CN109219063B - Communication method and device between base stations and base station - Google Patents

Abstract

The invention provides a communication method, a device and a base station between base stations, wherein the communication method comprises the following steps: in a transmission time unit for uplink or downlink data transmission, sending a dedicated air interface signal of a first base station at a first time window, and intercepting a first air interface signal sent by a second base station at a second time window; the first air interface signal comprises a second air interface signal sensed by the second base station and a dedicated air interface signal of the second base station. The embodiment of the invention solves the problems that a new interference type is easy to generate in a dynamic TDD scene and the measurement result of the downlink channel quality is out of date or invalid because the uplink and downlink transmission directions of the adjacent region can not be identified in the prior art.

Description

A method, device and base station for communication between base stations

technical field

The present invention relates to the field of communication technologies, and in particular, to a communication method, device and base station between base stations.

Background technique

In order to better support the dynamic change of the service load, the dynamic time division duplexing (TDD) technology is studied in the 5G new air interface technology, that is, it supports the flexible change of the uplink and downlink transmission directions in the TDD spectrum. However, compared with the traditional LTE system, when the transmission directions of adjacent transmission points (Transport Point, TRP) are inconsistent, the dynamic TDD technology may introduce new interference types, wherein the new interference types include the interference between TRP and TRP and Interference between user equipment (User Equipment, UE) and UE. For example, as shown in FIG. 1 , it is a schematic diagram of the interference problem in a dynamic TDD scenario. In FIG. 1 , in slot n, TRP1 is downlink transmission, and UE1 is served by TRP1, and TRP2 is uplink transmission, and UE2 is served by TRP2. In the process of uplink and downlink transmission, on the one hand, when TRP2 listens to the uplink signal sent by UE2, it may also listen to the downlink signal sent by TRP1 (that is, the interference between TRP and TRP), so the downlink signal sent by TRP1 may Interfering with the uplink signal listening on the TRP2 side, this type of interference is called interference between TRPs and TRPs, and can also be called downlink-to-uplink interference. On the other hand, when UE1 listens to the downlink signal sent by TRP1, it may also listen to the uplink signal sent by UE2 (that is, the interference between the UE and the UE). Therefore, the uplink signal sent by UE2 may interfere with the downlink signal on the UE1 side. Listening, this type of interference is called UE-UE interference, and can also be called uplink-to-downlink interference.

To sum up, the difference in the transmission directions of adjacent cells will lead to the generation of new interference types, and the generation of new interference types will cause harm to the communication system in various aspects. On the one hand, the new interference source leads to the decrease of the Signal to Interference plus Noise Ratio (SINR) at the listening end, which in turn deteriorates the demodulation performance; on the other hand, the new interference source may also often lead to downlink channel measurement The result is outdated or invalid, thereby deteriorating the working performance of the adaptive modulation and coding mechanism (Adaptive Modulation and Coding, AMC). For example, as shown in FIG. 2 , it is a schematic diagram of the mismatch between the downlink channel measurement result and the actually used downlink transmission channel. In Figure 2, it is assumed that the base station determines the downlink scheduling resources and downlink modulation and coding scheme (Modulation and Coding Scheme, MCS) parameters in slot n based on the downlink channel quality measurement results reported by the UE in slot n-k1, where the UE is in The quality measurement result of downlink channel state information (Channel State Information, CSI) measurement measured in slot n-k1-k2 is reported in slot n-k1. In Figure 2, the uplink and downlink transmission directions of the surrounding base stations (including TRP2, TRP3 and TRP4) in slot n-k1-k2 and slot n are not the same, so the downlink measured by the UE in slotn-k1-k2 The channel quality is largely inconsistent with the downlink channel quality experienced by the base station in slot n, so that in the dynamic TDD scenario, the downlink channel quality measurement results fed back by the UE are often outdated and invalid, thereby deteriorating the performance of the AMC mechanism.

Therefore, in order to avoid the problems of generating new interference types and outdated or invalid downlink channel quality measurement results, it is necessary to identify the uplink and downlink transmission directions of adjacent cells.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a communication method, device and base station between base stations, so as to solve the problem that new interference types and downlink channels are easily generated in a dynamic TDD scenario due to the inability to identify the uplink and downlink transmission directions of adjacent cells in the prior art Issues with outdated or invalid quality measurements.

In a first aspect, an embodiment of the present invention provides a communication method between base stations, which is applied to a first base station, and the communication method includes:

In the transmission time unit for uplink or downlink data transmission, the dedicated air interface signal of the first base station itself is sent in the first time window, and the first air interface signal sent by the second base station is monitored in the second time window; wherein,

The first air interface signal includes a second air interface signal sensed by the second base station and a dedicated air interface signal of the second base station itself.

Optionally, the communication method further includes: in a transmission time unit for uplink or downlink data transmission, sending a third air interface signal in a third time window, wherein the third air interface signal at least includes the first air interface signal .

Optionally, the communication method further includes: monitoring whether the first air interface signal can be detected in the second time window of the first preset transmission time unit; when the first air interface signal can be detected, According to a preset period, the working mode of the first base station is periodically changed; when the first air interface signal cannot be detected, the working mode of the first base station is randomly changed, and when the second preset transmission is detected When the first air interface signal can be detected in the time unit, the working mode of the first base station is periodically changed according to the preset period; wherein the preset period includes at least one transmission time unit, and the first The second preset transmission time unit is greater than the first preset transmission time unit; the working mode includes: sending the dedicated air interface signal of the first base station itself in the first time window, and listening to the air interface signal sent by the second base station in the second time window the first air interface signal, and the first working mode of sending the third air interface signal in the third time window; and, listening to the fourth air interface signal sent by the second base station in the first time window, and sending the fifth air interface in the second time window signal, and listen to the second working mode of the sixth air interface signal sent by the second base station in the third time window; wherein, the fifth air interface signal includes the fourth air interface signal and the dedicated air interface signal of the first base station itself.

Optionally, the communication method further includes: acquiring, according to a preset correspondence between the base station identifier and the frequency domain resource for sending the dedicated air interface signal, a data corresponding to the base station identifier of the second base station and used for sending the second base station itself. Dedicated frequency domain resources of the dedicated air interface signal; according to the dedicated frequency domain resources and the sequence type sent on the dedicated frequency domain resources, obtain the information sent by the second base station.

Optionally, the information sent by the second base station includes the transmission direction of the second base station in the current time slot; wherein, when the dedicated frequency domain resource is the first frequency domain resource and the first frequency domain resource is sent When the sequence type of the second base station is the first sequence type, the transmission direction of the second base station in the current time slot is the uplink transmission direction; when the dedicated frequency domain resource is the second frequency domain resource and the second frequency domain resource sends When the sequence type of the second base station is the second sequence type, the transmission direction of the second base station in the current time slot is the downlink transmission direction; when the dedicated frequency domain resource is the third frequency domain resource and the transmission is sent on the third frequency domain resource When the sequence type is the third sequence type, the second base station is in an idle state in the current time slot.

Optionally, when the information sent by the second base station includes the transmission direction of the second base station in the current time slot, the communication method further includes: determining the transmission direction of the second base station according to the transmission direction of the second base station in the current time slot. The downlink channel quality measurement result that matches the current channel of the first base station.

In a second aspect, an embodiment of the present invention further provides a communication method between base stations, which is applied to a second base station, and the communication method includes:

In the transmission time unit for uplink or downlink data transmission, the dedicated air interface signal of the first base station itself sent by the first base station is monitored in the first time window, and the first air interface signal is sent in the second time window; wherein, the The first air interface signal includes the second air interface signal sensed by the second base station and the dedicated air interface signal of the second base station itself.

Optionally, the communication method further includes: in a transmission time unit for uplink or downlink data transmission, listening to a third air interface signal in a third time window, wherein the third air interface signal at least includes the first air interface Signal.

Optionally, the communication method further includes: monitoring whether the dedicated air interface signal of the first base station itself can be detected in the first time window of the first preset transmission time unit; When the dedicated air interface signal of the base station itself is used, the working mode of the second base station is periodically changed according to a preset period; when the dedicated air interface signal of the first base station cannot be detected, the operation mode of the second base station is randomly changed. mode, and when it is detected that the dedicated air interface signal of the first base station itself can be detected in the second preset transmission time unit, the working mode of the second base station is periodically changed according to the preset period; wherein, The preset period includes at least one transmission time unit, and the second preset transmission time unit is greater than the first preset transmission time unit; the working mode includes: listening to the first base station in the first time window for sending the dedicated air interface signal of the first base station itself, send the first air interface signal in the second time window, and listen to the third working mode of the third air interface signal in the third time window; and send the second base station itself in the first time window the dedicated air interface signal, listens to the fifth air interface signal sent by the first base station in the second time window, and sends the fourth working mode of the sixth air interface signal in the third time window; wherein, the sixth air interface signal at least includes all Describe the fifth air interface signal.

Optionally, the communication method further includes: acquiring, according to a preset correspondence between the base station identifier and the frequency domain resource for sending the dedicated air interface signal, corresponding to the base station identifier of the first base station and used for sending the first base station itself. Dedicated frequency domain resources of dedicated air interface signals; according to the dedicated frequency domain resources and the sequence type sent on the dedicated frequency domain resources, obtain the information sent by the first base station.

Optionally, the information sent by the first base station includes the transmission direction of the first base station in the current time slot; wherein, when the dedicated frequency domain resource is the first frequency domain resource and the first frequency domain resource is sent on the first frequency domain resource When the sequence type of the first base station is the first sequence type, the transmission direction of the first base station in the current time slot is the uplink transmission direction; when the dedicated frequency domain resource is the second frequency domain resource and the second frequency domain resource sends When the sequence type of the first base station is the second sequence type, the transmission direction of the first base station in the current time slot is the downlink transmission direction; when the dedicated frequency domain resource is the third frequency domain resource and the third frequency domain resource sends When the sequence type is the third sequence type, the first base station is in an idle state in the current time slot.

Optionally, when the information sent by the first base station includes the transmission direction of the first base station in the current time slot, the communication method further includes: according to the transmission direction of the first base station in the current time slot, determining and The downlink channel quality measurement result that matches the current channel of the second base station.

In a third aspect, an embodiment of the present invention provides a communication device between base stations, which is applied to the first base station, and the communication device includes:

The signal transmission module is used to send the dedicated air interface signal of the first base station itself in the first time window in the transmission time unit for uplink or downlink data transmission, and listen to the first air interface sent by the second base station in the second time window signal; wherein the first air interface signal includes the second air interface signal sensed by the second base station and the dedicated air interface signal of the second base station itself.

In a fourth aspect, an embodiment of the present invention provides a communication device between base stations, which is applied to a second base station, and the communication device includes:

The signal transmission module is used to listen to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window in the transmission time unit for uplink or downlink data transmission, and send the first air interface in the second time window signal, wherein the first air interface signal includes a second air interface signal sensed by the second base station and a dedicated air interface signal of the second base station itself.

In a fifth aspect, an embodiment of the present invention provides a base station, the base station includes a memory, a processor, a transceiver, and a computer program stored in the memory and running on the processor; the processor implements the computer program when the processor executes the computer program. The communication method according to any one of the first aspects or the communication method according to any one of the second aspects.

In a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements any one of the communication methods or the second communication method in the first aspect. The communication method of any one of the aspects.

The beneficial effects of the present invention are:

In this embodiment of the present invention, in the transmission time unit for uplink or downlink data transmission, the first base station transmits the dedicated air interface signal of the first base station itself in the first time window, and listens to the first base station in the second time window. An air interface signal, when the first air interface signal includes the second air interface signal sensed by the second base station, so that the second base station can repeat the second air interface sensed by the second base station relative to the first base station Therefore, when the second air interface signal detected by the second base station includes the dedicated air interface signal sent by the surrounding base stations of the first base station, the first base station can obtain the dedicated air interface signal of the surrounding base station and the first base station in the second time window. The dedicated air interface signal of the second base station itself, so that the first base station can obtain the uplink and downlink transmission directions of the surrounding base stations according to the exclusive air interface signals of the surrounding base stations, thereby solving the problem of the inability to identify the uplink and downlink transmission directions of adjacent cells in the prior art. In a dynamic TDD scenario, new types of interference and outdated or invalid downlink channel quality measurement results are prone to occur.

Description of drawings

Figure 1 shows a schematic diagram of the interference problem in a dynamic TDD scenario;

FIG. 2 shows a schematic diagram of the downlink channel measurement result and the actually used downlink transmission channel mismatch;

Fig. 3 is a schematic diagram showing when the first time window, the second time window and the third time window are in the time slot interval of one time slot in the embodiment of the present invention;

FIG. 4 is a schematic diagram showing when the first time window, the second time window and the third time window are in time slot intervals of different time slots in an embodiment of the present invention;

FIG. 5 is a flowchart showing the detailed steps of the communication method applied to the first base station in the embodiment of the present invention;

FIG. 6 is a flowchart showing the detailed steps of the communication method applied to the second base station in the embodiment of the present invention;

FIG. 7 shows a structural block diagram of a communication apparatus applied to a first base station in an embodiment of the present invention;

FIG. 8 is a block diagram showing the structure of a communication apparatus applied to a second base station in an embodiment of the present invention;

FIG. 9 is a schematic diagram of a hardware structure of a first base station in an embodiment of the present invention;

FIG. 10 shows a schematic diagram of a hardware structure of a second base station in an embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be more thoroughly understood, and will fully convey the scope of the present disclosure to those skilled in the art.

In the present invention, in order to solve the problems in the prior art that new interference types are easily generated in a dynamic TDD scenario due to the inability to identify the uplink and downlink transmission directions of adjacent cells, and the downlink channel quality measurement results are outdated or invalid, the embodiments of the present invention provide A communication method between base stations is provided. The communication method is applied to a first base station. Specifically, the communication method includes:

In the transmission time unit for uplink or downlink data transmission, the first base station sends the dedicated air interface signal of the first base station itself in the first time window, and listens to the first air interface signal sent by the second base station in the second time window; wherein , the first air interface signal includes the second air interface signal sensed by the second base station and the dedicated air interface signal of the second base station itself.

Specifically, both the first base station and the second base station are base stations that do not support full duplex, and the first base station refers to a base station of the first type, the second base station refers to a base station of the second type, and the second base station is a base station of the first base station. surrounding base stations. In this way, as long as the base station of the first type sends the dedicated air interface signal of the first base station itself in the first time window, and listens to the first air interface signal sent by the base station of the second type in the second time window. Correspondingly, in the transmission time unit, the second base station listens to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window, and sends the first air interface signal in the second time window. Specifically, the first air interface signal includes a second air interface signal sensed by the second base station and a dedicated air interface signal of the second base station itself. In addition, the second air interface signal sensed by the second base station includes a dedicated air interface signal of the first base station itself sent by the first base station in the first time window.

In this way, the first base station sends the dedicated air interface signal of the first base station itself in the first time window, and listens to the first air interface signal sent by the second base station in the second time window. When the second air interface signal is heard, the second base station can play a role of repeating the second air interface signal heard by the second base station relative to the first base station. When the second air interface signal sensed by the second base station includes the dedicated air interface signals of the base stations belonging to the first type in the surrounding base stations of the first base station, the first base station can obtain the periodic base station belonging to the first base station in the second time window. In addition, the first base station can also obtain the dedicated air interface signals of the second base station belonging to the second type, which enables the first base station to obtain the dedicated air interface signals of surrounding base stations at the same time. A base station can obtain the uplink and downlink transmission directions of the surrounding base stations according to the dedicated air interface signals of the surrounding base stations, thereby solving the problem that in the prior art, new types of interference are easily generated in dynamic TDD scenarios due to the inability to identify the uplink and downlink transmission directions of adjacent cells. And the problem of outdated or invalid downlink channel quality measurement results.

Further, in a transmission time unit for uplink or downlink data transmission, the first base station sends a third air interface signal in a third time window, where the third air interface signal at least includes the first air interface signal. Correspondingly, the second base station receives the third air interface signal in the third time window.

In this way, since the first air interface signal includes the dedicated air interface signal of the second base station itself, when the third air interface signal includes the first air interface signal, the first base station can also play the role of repeating the second base station itself relative to the second base station. The role of the dedicated air interface signal. This enables the second base station to obtain the dedicated air interface signals of other base stations that are also of the second type, thereby enabling the first base station and the second base station to obtain the dedicated air interface signals of the surrounding base stations, and enabling the first base station and the second base station to obtain the dedicated air interface signals of the surrounding base stations. The uplink and downlink transmission directions of the surrounding base stations can be obtained according to the dedicated air interface signals of the surrounding base stations.

Specifically, in one transmission time unit, the first time window, the second time window and the third time window may be in a time slot interval of one time slot. Specifically, as shown in FIG. 3 , in FIG. 3 , the first time window, the second time window and the third time window are in a time slot interval of slot n.

In addition, specifically, in one transmission time unit, the first time window, the second time window and the third time window may also be in time slot intervals of different time slots. Specifically, as shown in FIG. 4 , in FIG. 4 , the first time window is in the initial time slot interval of slot n, and the second time window and the third time window are in the end time slot interval of slot n-1. In addition, specifically, the first time window and the second time window may be in the start time slot interval of slot n, and the third time window may be in the end time slot interval of slot n-1.

Of course, it should be noted here that, referring to FIG. 3 and FIG. 4 , when the first time window, the second time window and the third time window are in time slot intervals of different time slots, the first time window and the second time window are The time interval between them is larger than the time slot interval in which the first time window, the second time window and the third time window are in the same time slot, so that more processing time can be reserved for the base station.

In addition, further, in order to ensure that adjacent base stations can obtain each other's air interface signals, a second base station needs to exist around each first base station, otherwise the first base station will not be able to obtain adjacent base station information.

This scenario is described in detail below.

Assume that in a base station topology relationship including base station A, base station B, base station C, and base station D, base station A can only sense the signals of base station B and base station C, and base station B can sense base station A, base station The signals of base station C and base station D, base station C can sense the signals of base station A, base station B and base station D, and base station D can only sense the signals of base station B and base station C.

At this time, it is assumed that in the first transmission time unit, base station A, base station B, base station C, and base station D are all first base stations, that is, base station A, base station B, base station C, and base station D all choose to transmit in the first time window Its own dedicated air interface signal listens to the first air interface signal sent by the second base station in the second time window. In this way, in the second time window, base station A, base station B, base station C, and base station D are all in the listening state, and no base station is in the state of transmitting air interface signals, so at this time, base station A, base station B, base station C, and base station No one of the four first base stations of D can sense the air interface signals sent by other base stations.

For the above scenario, the first base station and the second base station in the base station topology relationship may be configured in the following manner.

First, the first base station and the second base station in the base station topology relationship can be configured through operation, management and maintenance (OAM) configuration. For example, base station B and base station C can be configured as the first base station, and base station A and base station D as the second base station, so that the first base station sends the dedicated air interface signal of the first base station itself in the first time window, and listens in the second time window. The first air interface signal sent by the second base station, and the second base station listens to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window. When the first air interface signal is sent in the second time window, the base station can ensure that the B and base station C hear the first air interface signal sent by base station A and base station D in the second time window, and can ensure that base station A and base station D can hear the dedicated air interface signal and base station sent by base station B in the first time window The dedicated air interface signal sent by C.

Second, during initialization, the base stations can coordinate the base stations in the base station topology relationship as the first base station or the second base station through the wired or wireless backhaul interface, so as to ensure that the second base station exists around the first base station.

Third, it is also possible to monitor whether the first air interface signal can be detected in the second time window of the first preset transmission time unit; when the first air interface signal can be detected, periodically change according to a preset period. The working mode of the first base station; when the first air interface signal cannot be sensed, the working mode of the first base station is randomly changed, and when it is monitored that the first air interface signal can be sensed in the second preset transmission time unit , periodically changing the working mode of the first base station according to a preset period; wherein the preset period includes at least one transmission time unit, and the second preset transmission time unit is greater than the first preset transmission time unit; the working mode includes: in The first working mode of sending the dedicated air interface signal of the first base station itself in the first time window, listening to the first air interface signal sent by the second base station in the second time window, and sending the third air interface signal in the third time window; and, The second working mode of listening to the fourth air interface signal sent by the second base station in the first time window, sending the fifth air interface signal in the second time window, and listening to the sixth air interface signal sent by the second base station in the third time window ; wherein, the fifth air interface signal includes the fourth air interface signal and the dedicated air interface signal of the first base station itself.

Specifically, when the first base station detects that the first air interface signal can be detected in the second time window, it indicates that there is a second base station around the first base station, and at this time, it is only necessary to periodically change the first base station according to a preset period. working mode. Of course, the preset period may be at least one preset transmission time unit. Correspondingly, at this time, the second base station can detect the dedicated air interface signal of the first base station itself sent by the first base station in the first time window, and the second base station only needs to periodically change the second base station according to the same preset period. The working mode of the base station is sufficient.

This scenario is described below.

For example, it is assumed that the preset period is a preset transmission time unit, base station B and base station C are the first base station, base station A and base station D are the second base station, and base station B and base station C are in the first preset transmission time unit. The working mode is the first working mode, and the working mode of the base station A and the base station D in the first preset transmission time unit is the third working mode, that is, in the first preset transmission time unit, the base station B and the base station C are both in the first preset transmission time unit. In a time window, the dedicated air interface signal of the base station itself is sent. Both base station A and base station D listen to the dedicated air interface signal of the base station itself sent by base station B and the dedicated air interface signal of the base station sent by base station C in the first time window. Both base station D sends the first air interface signal in the second time window, and base station B and base station C both listen to the first air interface signal sent by base station A and the first air interface signal sent by base station D in the second time window. The third air interface signal is sent in the third time window, and both base station A and base station D receive the third air interface signal sent by the base station B and the third air interface signal sent by the base station C in the third time window. At this time, the working mode of the first base station is periodically changed, and the working mode of the second base station is periodically changed, that is, in the second preset transmission time unit, the working mode of the first base station is changed from the first working mode to the first working mode. The second working mode is to change the working mode of the second base station from the third working mode to the fourth working mode. That is, in the second preset transmission time unit, both base station A and base station D send the dedicated air interface signal of the base station in the first time window, and base station B and base station C both listen to the fourth air interface sent by base station A in the first time window. signal and the fourth air interface signal sent by base station D, base station B and base station C both send the fifth air interface signal in the second time window, and base station A and base station D both listen to the fifth air interface signal sent by base station B in the second time window and The fifth air interface signal sent by base station C, and base station A and base station D both send the sixth air interface signal in the third time window, and base station B and base station C both listen to the sixth air interface signal sent by base station A in the third time window and the base station The sixth air interface signal sent by D.

Since the first air interface signal includes the second air interface signal sensed by the second base station (base station A and base station D) and the dedicated air interface signal of the base station itself, the second base station (base station A and base station D) is made relative to the first base station. As far as base station B and base station C are concerned, it can play the role of repeating the air interface signal, so that base station B can obtain the dedicated air interface signals of base station A, base station C and base station D in the second time window, and make base station C in the second time window. The second time window can acquire the dedicated air interface signals of the base stations of base station A, base station B, and base station D. In addition, since the third air interface signal includes at least the first air interface signal, and the first air interface signal includes the second air interface signal sensed by the second base station (base station A and base station D) and the dedicated air interface signal of the base station itself, the base station A is made The dedicated air interface signals of the base stations of base station B, base station C, and base station D can be obtained, and base station D can obtain the dedicated air interface signals of base stations A, base station B, and base station C, that is, the first base station (base station B and base station C), relative to the second base station (base station A and base station D), can also play the role of repeating the air interface signal.

In addition, specifically, when the first base station cannot detect the first air interface signal, it means that there is no second base station around the first base station. At this time, the working mode of the first base station can be randomly changed, that is, the first base station can The preset probability changes the working mode of the first base station. For example, assuming that the preset period is a preset transmission time unit, and the working mode of the first base station in the first preset transmission time unit is the first working mode, then the first base station in the second preset transmission time unit The working mode may be changed to the second working mode with a preset probability, that is, the working mode of the first base station in the second preset transmission time unit may be the second working mode, and may also be maintained as the first working mode. At this time, since the working mode of the first base station is changed randomly, it cannot be guaranteed that the first base station changes from the first working mode to the second working mode in the second preset transmission time unit. At this time, it is necessary to continue to randomly change the first working mode. The working mode of a base station until the first air interface signal can be detected in the second preset transmission time unit, that is, the first base station changes from the first working mode to the second working mode in the second preset transmission time unit The working mode of the first base station can be changed periodically according to a preset period, and correspondingly, the working mode of the second base station can be changed periodically.

This scenario is described below.

For example, it is assumed that the preset period is a preset transmission time unit, and base station A, base station B, base station C, and base station D are all first base stations, and base station A, base station B, base station C, and base station D transmit at the first preset time The working modes in the time unit are all the first working modes. In this way, base station A, base station B, base station C, and base station D cannot detect the first air interface signal. At this time, the working modes of base station A, base station B, base station C, and base station D can be randomly changed until base station A, base station B, Until the working mode of the base station in base station C and base station D is changed from the first working mode to the second working mode, then the working mode of the first base station can be changed periodically according to a preset period, and correspondingly, the second base station can be changed periodically working mode.

In this way, when it is monitored that the first air interface signal can be detected in the second preset transmission time unit, the working mode of the first base station is periodically changed according to the preset period, so that the working mode of the first base station can follow the preset period. The change occurs, so that the first base station can also play the role of repetition compared to the second base station, so that the second base station can also obtain the exclusive air interface signal of the periodic base station, so that the second base station can be based on the surrounding base stations. The dedicated air interface signal obtains the uplink and downlink transmission directions of the surrounding base stations.

In addition, further, as shown in FIG. 5 , it is a flowchart of detailed steps of the communication method applied to the first base station. The communication method also includes the following steps:

Step 501: In a transmission time unit for uplink or downlink data transmission, send the dedicated air interface signal of the first base station itself in the first time window, and listen to the first air interface signal sent by the second base station in the second time window.

Step 502, according to the preset correspondence between the base station identifier and the frequency domain resource for sending the dedicated air interface signal, obtain the exclusive frequency domain resource corresponding to the base station identifier of the second base station and used for sending the dedicated air interface signal of the second base station itself .

Specifically, a preset correspondence relationship between the base station identifier and the exclusive frequency domain resource for the exclusive air interface signal sent by the base station can be pre-established. The base station identifier obtains the exclusive frequency domain resources for the base station corresponding to the base station identifier to send the exclusive air interface signal.

Specifically, the frequency domain resources used by the base station in different transmission time units may be the same or may be different. When the frequency domain resources used by the base station in different transmission time units are different, the frequency domain position of the base station itself may be selected in different transmission time units according to a preset frequency modulation mode.

Step 503: Acquire information sent by the second base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource.

Specifically, the information sent by the second base station includes the transmission direction of the second base station in the current time slot.

Among them, since the dedicated air interface signals of all base stations can take values from a certain predefined sequence set, and carry information through the sequence type. For example, the sequence set includes at least two sequence types, wherein sequence 0 indicates that the current time slot of the base station is a time slot mainly for downlink transmission, and sequence 1 indicates that the current time slot of the base station is a time slot mainly for uplink transmission. Here, the transmission direction of the second base station in the current time slot may be obtained comprehensively according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource. At this time, when the dedicated frequency domain resource is the first frequency domain resource and the sequence type sent on the first frequency domain resource is the first sequence type, the transmission direction of the second base station in the current time slot is the uplink transmission direction; When the domain resource is the second frequency domain resource and the sequence type sent on the second frequency domain resource is the second sequence type, the transmission direction of the second base station in the current time slot is the downlink transmission direction; when the dedicated frequency domain resource is the third frequency domain resource. domain resources and the sequence type sent on the third frequency domain resource is the third sequence type, the second base station is in an idle state in the current time slot.

Step 504: Determine the downlink channel quality measurement result matching the current channel of the first base station according to the transmission direction of the second base station in the current time slot.

In this step, specifically, when the transmission direction of the second base station in the current time slot is obtained, the first base station can be enabled to select a downlink channel quality measurement result that matches the current channel of the first base station, thereby avoiding downlink channel quality measurement results. Problems with outdated or invalid quality measurements.

In this way, the first base station in the embodiment of the present invention sends the dedicated air interface signal of the first base station itself in the first time window, and listens to the first air interface signal sent by the second base station in the second time window. When the signal includes the second air interface signal sensed by the second base station, the second base station can play the role of repeating the second air interface signal sensed by the second base station, relative to the first base station, so that in the second base station When the sensed second air interface signal includes the dedicated air interface signal sent by the surrounding base stations of the first base station, the first base station can obtain the dedicated air interface signal of the surrounding base station and the dedicated air interface signal of the second base station itself in the second time window, and further It enables the first base station to obtain the uplink and downlink transmission directions of the surrounding base stations according to the dedicated air interface signals of the surrounding base stations, thereby solving the problem that in the prior art, the uplink and downlink transmission directions of adjacent cells cannot be identified, which leads to the easy generation of new data in the dynamic TDD scenario. Interference types and downlink channel quality measurements are outdated or invalid.

On the other hand, an embodiment of the present invention also provides a communication method applied to a second base station, the communication method comprising: in a transmission time unit for uplink or downlink data transmission, listening to the first base station in a first time window The dedicated air interface signal of the first base station itself is sent, and the first air interface signal is sent in the second time window; wherein, the first air interface signal includes the second air interface signal sensed by the second base station and the dedicated air interface signal of the second base station itself . Specifically, the second air interface signal includes a dedicated air interface signal of the first base station itself that is sensed by the second base station in the first time window.

Specifically, both the first base station and the second base station are base stations that do not support full duplex, and the first base station refers to a base station of the first type, the second base station refers to a base station of the second type, and the first base station is a base station of the second base station. surrounding base stations. In this way, as long as the base station of the second type listens to the dedicated air interface signal of the first base station sent by the first base station in the first time window, and sends the first air interface signal in the second time window. Correspondingly, in the transmission time unit, the first base station sends the dedicated air interface signal of the first base station itself in the first time window, and listens to the first air interface signal sent by the base station of the second type in the second time window.

In this way, the second base station listens to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window, and sends the first air interface signal in the second time window. When the second air interface signal is heard, the second base station can play a role of repeating the second air interface signal heard by the second base station relative to the first base station. When the second air interface signal sensed by the second base station includes the dedicated air interface signals of the base stations belonging to the first type in the surrounding base stations of the first base station, the first base station can obtain the periodic base station belonging to the first base station in the second time window. In addition, the first base station can also obtain the dedicated air interface signals of the second base station belonging to the second type, which enables the first base station to obtain the dedicated air interface signals of surrounding base stations at the same time. A base station can obtain the uplink and downlink transmission directions of the surrounding base stations according to the dedicated air interface signals of the surrounding base stations, thereby solving the problem that in the prior art, new types of interference are easily generated in dynamic TDD scenarios due to the inability to identify the uplink and downlink transmission directions of adjacent cells. And the problem of outdated or invalid downlink channel quality measurement results.

Further, in a transmission time unit for uplink or downlink data transmission, the second base station listens to a third air interface signal in a third time window, where the third air interface signal at least includes the first air interface signal. Correspondingly, the first base station sends the third air interface signal in the third time window.

In this way, since the first air interface signal includes the second air interface signal sensed by the second base station and the dedicated air interface signal of the second base station itself, when the third air interface signal includes the first air interface signal, the first base station is relative to the second base station. It can also play the role of retelling. This enables the second base station to obtain the dedicated air interface signals of other base stations that are also of the second type, thereby enabling the first base station and the second base station to obtain the dedicated air interface signals of the surrounding base stations, and enabling the first base station and the second base station to obtain the dedicated air interface signals of the surrounding base stations. The uplink and downlink transmission directions of the surrounding base stations can be obtained according to the dedicated air interface signals of the surrounding base stations.

Specifically, in one transmission time unit, the first time window, the second time window and the third time window may be in a time slot interval of one time slot. Specifically, as shown in FIG. 3 , in FIG. 3 , the first time window, the second time window and the third time window are in a time slot interval of slot n.

In addition, specifically, in one transmission time unit, the first time window, the second time window and the third time window may also be in time slot intervals of different time slots. Specifically, as shown in FIG. 4 , in FIG. 4 , the first time window is in the initial time slot interval of slot n, and the second time window and the third time window are in the end time slot interval of slot n-1. In addition, specifically, the first time window and the second time window may be in the start time slot interval of slot n, and the third time window may be in the end time slot interval of slot n-1.

Of course, it should be noted here that, referring to FIG. 3 and FIG. 4 , when the first time window, the second time window and the third time window are in time slot intervals of different time slots, the first time window and the second time window are The time interval between them is larger than the time slot interval in which the first time window, the second time window and the third time window are in the same time slot, so that more processing time can be reserved for the base station.

In addition, further, in order to ensure that adjacent base stations can obtain each other's air interface signals, a first base station needs to exist around each second base station, otherwise the second base station will not be able to obtain adjacent base station information.

This scenario is described in detail below.

Assume that in a base station topology relationship including base station A, base station B, base station C, and base station D, base station A can only sense the signals of base station B and base station C, and base station B can sense base station A, base station The signals of base station C and base station D, base station C can sense the signals of base station A, base station B and base station D, and base station D can only sense the signals of base station B and base station C.

At this time, it is assumed that in the first transmission time unit, base station A, base station B, base station C, and base station D are all second base stations, that is, base station A, base station B, base station C, and base station D all choose to detect in the first time window. Listen to the air interface signals of other base stations, and send the first air interface signal in the second time window. In this way, in the first time window, base station A, base station B, base station C, and base station D are all in the listening state, and no base station is in the state of transmitting air interface signals. Therefore, at this time, base station A, base station B, base station C, and base station None of the four base stations in D can sense the air interface signals sent by other base stations.

For the above scenario, the first base station and the second base station in the base station topology relationship may be configured in the following manner.

First, the first base station and the second base station in the base station topology relationship can be configured through OAM configuration. For example, base station B and base station C can be configured as the first base station, and base station A and base station D as the second base station, so that the first base station sends the dedicated air interface signal of the first base station itself in the first time window, and listens in the second time window. The first air interface signal sent by the second base station, and the second base station listens to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window. When the first air interface signal is sent in the second time window, the base station can ensure that the B and base station C hear the first air interface signal sent by base station A and base station D in the second time window, and can ensure that base station A and base station D can hear the dedicated air interface signal and base station sent by base station B in the first time window The dedicated air interface signal sent by C.

Second, during initialization, the base stations can coordinate the base stations in the base station topology relationship as the first base station or the second base station through the wired or wireless backhaul interface, thereby ensuring that the second base station exists around the first base station.

Third, it can also monitor whether the dedicated air interface signal of the first base station itself can be detected in the first time window of the first preset transmission time unit; when the dedicated air interface signal of the first base station itself can be detected, According to the preset period, the working mode of the second base station is periodically changed; when the dedicated air interface signal of the first base station cannot be detected, the working mode of the second base station is randomly changed, and when the second preset transmission is detected When the dedicated air interface signal of the first base station itself can be detected in the time unit, the working mode of the second base station is periodically changed according to a preset period; wherein, the preset period includes at least one transmission time unit, and the second preset transmission The time unit is greater than the first preset transmission time unit; the working mode includes: listening to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window, sending the first air interface signal in the second time window, and in the first time window. The third working mode of listening to the third air interface signal in three time windows; and sending the dedicated air interface signal of the second base station itself in the first time window, listening to the fifth air interface signal sent by the first base station in the second time window, and in the second time window. The third time window sends the fourth working mode of the sixth air interface signal; wherein the sixth air interface signal includes at least the fifth air interface signal.

Specifically, when the second base station monitors that the dedicated air interface signal of the first base station itself can be detected in the first time window of the first preset transmission time unit, it indicates that the first base station exists around the second base station. It is only necessary to periodically change the working mode of the second base station according to the preset period. Of course, the preset period may be at least one preset transmission time unit. Correspondingly, when the first base station can detect the first air interface signal sent by the second base station in the second time window, the first base station only needs to periodically change the working mode of the first base station according to the same preset period. That's it.

This scenario is described below.

For example, it is assumed that the preset period is a preset transmission time unit, base station B and base station C are the first base station, base station A and base station D are the second base station, and base station B and base station C are in the first preset transmission time unit. The working mode is the first working mode, and the working mode of the base station A and the base station D in the first preset transmission time unit is the third working mode, that is, in the first preset transmission time unit, the base station B and the base station C are both in the first preset transmission time unit. In a time window, the dedicated air interface signal of the base station itself is sent. Both base station A and base station D listen to the dedicated air interface signal of the base station itself sent by base station B and the dedicated air interface signal of the base station sent by base station C in the first time window. Both base station D sends the first air interface signal in the second time window, and base station B and base station C both listen to the first air interface signal sent by base station A and the first air interface signal sent by base station D in the second time window. The third air interface signal is sent in the third time window, and both base station A and base station D receive the third air interface signal sent by the base station B and the third air interface signal sent by the base station C in the third time window. At this time, the working mode of the second base station is periodically changed, and the working mode of the first base station is periodically changed, that is, in the second preset transmission time unit, the working mode of the second base station is changed from the third working mode to the first base station. Four working modes, changing the working mode of the first base station from the first working mode to the second working mode. That is, in the second preset transmission time unit, both base station A and base station D send the dedicated air interface signal of the base station in the first time window, and base station B and base station C both listen to the fourth air interface sent by base station A in the first time window. signal and the fourth air interface signal sent by base station D, base station B and base station C both send the fifth air interface signal in the second time window, and base station A and base station D both listen to the fifth air interface signal sent by base station B in the second time window and The fifth air interface signal sent by base station C, and base station A and base station D both send the sixth air interface signal in the third time window, and base station B and base station C both listen to the sixth air interface signal sent by base station A in the third time window and the base station The sixth air interface signal sent by D.

Since the first air interface signal includes the second air interface signal sensed by the second base station (base station A and base station D) and the dedicated air interface signal of the base station itself, the second base station (base station A and base station D) is made relative to the first base station. As far as base station B and base station C are concerned, it can play the role of repeating the air interface signal, so that base station B can obtain the dedicated air interface signals of base station A, base station C and base station D in the second time window, and make base station C in the second time window. The second time window can acquire the dedicated air interface signals of the base stations of base station A, base station B, and base station D. In addition, since the third air interface signal includes at least the first air interface signal, and the first air interface signal includes the second air interface signal sensed by the second base station (base station A and base station D) and the dedicated air interface signal of the base station itself, the base station A is made The dedicated air interface signals of the base stations of base station B, base station C, and base station D can be obtained, and base station D can obtain the dedicated air interface signals of base stations A, base station B, and base station C, that is, the first base station (base station B and base station C), relative to the second base station (base station A and base station D), can also play the role of repeating the air interface signal.

In addition, specifically, when the second base station monitors that the dedicated air interface signal of the first base station itself cannot be detected in the first time window of the first preset transmission time unit, it means that there is no first base station around the second base station. , at this time, the working mode of the second base station can be changed randomly, that is, the second base station can change the working mode of the second base station with a preset probability. For example, assuming that the preset period is a preset transmission time unit, and the operation mode of the second base station in the first preset transmission time unit is the third operation mode, the second base station in the second preset transmission time unit The working mode may be changed to the fourth working mode with a preset probability, that is, the working mode of the second base station in the second preset transmission time unit may be the fourth working mode, and may also be maintained as the third working mode. At this time, since the working mode of the second base station is changed randomly, it cannot be guaranteed that the second base station changes from the third working mode to the fourth working mode in the second preset transmission time unit. At this time, it is necessary to continue to randomly change the first working mode The working mode of the two base stations until the dedicated air interface signal of the first base station can be detected in the second preset transmission time unit, that is, there is a second base station in the second preset transmission time unit from the third working mode After changing to the fourth working mode, the working mode of the second base station may be periodically changed according to a preset period, and correspondingly, the working mode of the first base station may be periodically changed.

This scenario is described below.

For example, it is assumed that the preset period is a preset transmission time unit, and base station A, base station B, base station C, and base station D are all second base stations, and base station A, base station B, base station C, and base station D transmit in the first preset The working modes in the time unit are all third working modes. In this way, base station A, base station B, base station C and base station D cannot detect the dedicated air interface signal of the first base station itself. At this time, the working modes of base station A, base station B, base station C and base station D can be randomly changed until base station A , Base station B, base station C, and base station D have the working mode of the base station changed from the third working mode to the fourth working mode, and then the working mode of the second base station can be periodically changed according to a preset period, and correspondingly, the periodic Change the working mode of the first base station.

In this way, when it is monitored that the dedicated air interface signal of the first base station itself can be detected in the first time window of the second preset transmission time unit, the working mode of the second base station is periodically changed according to the preset period, so that the second base station can The working mode can be changed according to the preset period, so that the first base station and the second base station can play the role of repeating each other, so that both the first base station and the second base station can obtain the exclusive air interface signal of the periodic base station, so that the The first base station and the second base station can acquire the uplink and downlink transmission directions of the surrounding base stations according to the dedicated air interface signals of the surrounding base stations.

In addition, further, as shown in FIG. 6 , it is a flowchart of detailed steps of the communication method applied to the second base station. The communication method also includes the following steps:

Step 601 , in the transmission time unit for uplink or downlink data transmission, listen to the dedicated air interface signal of the first base station sent by the first base station in the first time window, and send the first air interface signal in the second time window.

Step 602: Acquire, according to the preset correspondence between the base station identifier and the frequency domain resource for sending the dedicated air interface signal, the exclusive frequency domain resource corresponding to the base station identifier of the first base station and used for sending the dedicated air interface signal of the first base station itself ;

In this step, specifically, a preset correspondence relationship between the base station identifier and the exclusive frequency domain resource for the exclusive air interface signal sent by the base station may be pre-established, so that the preset correspondence between the base station identifier and the exclusive frequency domain resource for the exclusive air interface signal sent by the base station is established. relationship, the dedicated frequency domain resources for sending dedicated air interface signals by the base station corresponding to the base station identification can be obtained according to the base station identification.

Specifically, the frequency domain resources used by the base station in different transmission time units may be the same or may be different. When the frequency domain resources used by the base station in different transmission time units are different, the frequency domain position of the base station itself may be selected in different transmission time units according to a preset frequency modulation mode.

Step 603: Acquire information sent by the first base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource.

Specifically, the information sent by the first base station includes the transmission direction of the first base station in the current time slot.

Among them, since the dedicated air interface signals of all base stations can take values from a certain predefined sequence set, and carry information through the sequence type. For example, the sequence set includes at least two sequence types, wherein sequence 0 indicates that the current time slot of the base station is a time slot mainly for downlink transmission, and sequence 1 indicates that the current time slot of the base station is a time slot mainly for uplink transmission. Here, the transmission direction of the first base station in the current time slot may be comprehensively obtained according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource. At this time, when the dedicated frequency domain resource is the first frequency domain resource and the sequence type sent on the first frequency domain resource is the first sequence type, the transmission direction of the first base station in the current time slot is the uplink transmission direction; when the dedicated frequency domain resource is the first sequence type When the domain resource is the second frequency domain resource and the sequence type sent on the second frequency domain resource is the second sequence type, the transmission direction of the first base station in the current time slot is the downlink transmission direction; when the dedicated frequency domain resource is the third frequency domain resource. domain resources and the sequence type sent on the third frequency domain resource is the third sequence type, the first base station is in an idle state in the current time slot.

Step 604: Determine a downlink channel quality measurement result matching the current channel of the second base station according to the transmission direction of the first base station in the current time slot.

In this step, specifically, when the transmission direction of the first base station in the current time slot is obtained, the second base station can be enabled to select a downlink channel quality measurement result that matches the current channel of the first base station, thereby avoiding downlink channel quality measurement results. Problems with outdated or invalid quality measurements.

In this way, the second base station in the embodiment of the present invention listens to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window, and sends the first air interface signal in the second time window, which is in the first air interface When the signal includes the second air interface signal sensed by the second base station, the second base station can play the role of repeating the second air interface signal sensed by the second base station, relative to the first base station, so that in the second base station When the detected second air interface signal includes the dedicated air interface signal of the surrounding base stations of the first base station, the first base station can obtain the dedicated air interface signal of the periodic base station itself and the dedicated air interface signal of the second base station itself in the second time window, In this way, the first base station can obtain the uplink and downlink transmission directions of the surrounding base stations according to the dedicated air interface signals of the surrounding base stations, thereby solving the problem in the prior art that the uplink and downlink transmission directions of adjacent cells cannot be identified, which is easy to occur in a dynamic TDD scenario. New interference types and outdated or invalid downlink channel quality measurements.

On the other hand, an embodiment of the present invention provides a communication device between base stations, which is applied to the first base station. Specifically, as shown in FIG. 7 , the communication device includes:

The signal transmission module 701 is configured to send the dedicated air interface signal of the first base station itself in the first time window in the transmission time unit for uplink or downlink data transmission, and listen to the first time window sent by the second base station in the second time window. An air interface signal; wherein the first air interface signal includes a second air interface signal sensed by the second base station and a dedicated air interface signal of the second base station itself.

Optionally, the signal transmission module 701 is further configured to, in a transmission time unit for uplink or downlink data transmission, send a third air interface signal in a third time window, wherein the third air interface signal at least includes the first air interface signal. An air interface signal.

Optionally, the communication device further includes: a monitoring module 702, configured to monitor whether the first air interface signal can be detected in the second time window of the first preset transmission time unit; when the first air interface signal can be detected; When the first air interface signal is used, the working mode of the first base station is periodically changed according to a preset period; when the first air interface signal cannot be detected, the working mode of the first base station is randomly changed, and when monitoring When the first air interface signal can be detected in the second preset transmission time unit, the working mode of the first base station is periodically changed according to the preset period; wherein the preset period includes at least one transmission time unit, and the second preset transmission time unit is greater than the first preset transmission time unit; the working mode includes: sending the dedicated air interface signal of the first base station itself in the first time window, and detecting in the second time window listening to the first air interface signal sent by the second base station and sending the third air interface signal in the third time window; and, listening to the fourth air interface signal sent by the second base station in the first time window, and in the second time window The second working mode of sending the fifth air interface signal in the time window, and listening to the sixth air interface signal sent by the second base station in the third time window; wherein, the fifth air interface signal includes the fourth air interface signal and the first base station. Its own dedicated air interface signal.

Optionally, the communication device further includes: a first obtaining module 703, configured to obtain, according to the preset correspondence between the base station identifier and the frequency domain resource for sending the dedicated air interface signal, the base station identifier corresponding to the second base station. The dedicated frequency domain resource used for sending the dedicated air interface signal of the second base station itself; the second obtaining module 704 is configured to obtain the dedicated frequency domain resource of the second base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource. information sent.

Optionally, the information sent by the second base station includes the transmission direction of the second base station in the current time slot; wherein, when the dedicated frequency domain resource is the first frequency domain resource and the first frequency domain resource is sent When the sequence type of the second base station is the first sequence type, the transmission direction of the second base station in the current time slot is the uplink transmission direction; when the dedicated frequency domain resource is the second frequency domain resource and the second frequency domain resource sends When the sequence type of the second base station is the second sequence type, the transmission direction of the second base station in the current time slot is the downlink transmission direction; when the dedicated frequency domain resource is the third frequency domain resource and the transmission is sent on the third frequency domain resource When the sequence type is the third sequence type, the second base station is in an idle state in the current time slot.

Optionally, the communication device further includes: a determining module 705, configured to, when the information sent by the second base station includes the transmission direction of the second base station in the current time slot, according to the current time slot of the second base station determine the downlink channel quality measurement result that matches the current channel of the first base station.

On the other hand, an embodiment of the present invention provides a communication device between base stations, which is applied to a second base station. Specifically, as shown in FIG. 8 , the communication device includes:

The signal transmission module 801 is configured to, in the transmission time unit for uplink or downlink data transmission, listen to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window, and send the first time window in the second time window. An air interface signal; wherein the first air interface signal includes a second air interface signal sensed by the second base station and a dedicated air interface signal of the second base station itself.

Optionally, the signal transmission module 801 is further configured to, in a transmission time unit for uplink or downlink data transmission, listen for a third air interface signal in a third time window, wherein the third air interface signal at least includes the The first air interface signal.

Optionally, the communication device further includes: a monitoring module 802, configured to monitor whether the dedicated air interface signal of the first base station itself can be detected in the first time window of the first preset transmission time unit; When hearing the dedicated air interface signal of the first base station itself, periodically change the working mode of the second base station according to a preset period; when the dedicated air interface signal of the first base station itself cannot be detected, randomly change the working mode of the second base station. the working mode of the second base station, and when monitoring that the dedicated air interface signal of the first base station itself can be detected in the second preset transmission time unit, periodically changing the second base station according to the preset period The working mode; wherein, the preset period includes at least one transmission time unit, and the second preset transmission time unit is greater than the first preset transmission time unit; the working mode includes: in the first time window The third working mode of listening to the dedicated air interface signal of the first base station itself sent by the first base station, sending the first air interface signal in the second time window, and listening to the third air interface signal in the third time window; and at the first time The window sends the dedicated air interface signal of the second base station itself, listens to the fifth air interface signal sent by the first base station in the second time window, and sends the sixth air interface signal in the third time window. The six air interface signals include at least the fifth air interface signal.

Optionally, the communication device further includes: a first obtaining module 803, configured to obtain, according to the preset correspondence between the base station identifier and the frequency domain resource for sending the dedicated air interface signal, the base station identifier corresponding to the first base station, The dedicated frequency domain resource used for sending the dedicated air interface signal of the first base station itself; the second obtaining module 804 is configured to obtain the dedicated frequency domain resource of the first base station according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource. information sent.

Optionally, the information sent by the first base station includes the transmission direction of the first base station in the current time slot; wherein, when the dedicated frequency domain resource is a first frequency domain resource and the first frequency domain resource is sent on the first frequency domain resource When the sequence type of the first base station is the first sequence type, the transmission direction of the first base station in the current time slot is the uplink transmission direction; when the dedicated frequency domain resource is the second frequency domain resource and the second frequency domain resource sends When the sequence type of the first base station is the second sequence type, the transmission direction of the first base station in the current time slot is the downlink transmission direction; when the dedicated frequency domain resource is the third frequency domain resource and the third frequency domain resource sends When the sequence type is the third sequence type, the first base station is in an idle state in the current time slot.

Optionally, the communication device further includes: a determining module 805, configured to, when the information sent by the first base station includes the transmission direction of the first base station in the current time slot, according to the current time slot of the first base station determine the downlink channel quality measurement result that matches the current channel of the second base station.

In addition, as shown in FIG. 9, an embodiment of the present invention also provides a base station, the base station includes a memory 901, a processor 902, a transceiver 903, and a computer program stored in the memory 901 and running on the processor 902; The processor 902 is used to read the computer program in the memory 901, and execute the following processes:

The processor 902 sends the dedicated air interface signal of the first base station itself in the first time window through the transceiver 903 in the transmission time unit for uplink or downlink data transmission, and listens for the first time window sent by the second base station. An air interface signal; wherein the first air interface signal includes a second air interface signal sensed by the second base station and a dedicated air interface signal of the second base station itself.

In FIG. 9 , the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by processor 902 and various circuits of memory represented by memory 901 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. Bus interface 904 provides the interface. Transceiver 903 may be a number of elements, including transmitters and transceivers, that provide means for communicating with various other devices over a transmission medium.

The processor 902 is responsible for managing the bus architecture and general processing, and the memory 901 may store data used by the processor 902 in performing operations.

Optionally, the processor 902 is further configured, through the transceiver 903, to send a third air interface signal in a third time window in a transmission time unit for uplink or downlink data transmission, wherein the third air interface signal at least includes: the first air interface signal.

Optionally, the processor 902 is configured to monitor whether the first air interface signal can be detected in the second time window of the first preset transmission time unit; when the first air interface signal can be detected, According to a preset period, the working mode of the first base station is periodically changed; when the first air interface signal cannot be detected, the working mode of the first base station is randomly changed, and when the second preset transmission is detected When the first air interface signal can be detected in the time unit, the working mode of the first base station is periodically changed according to the preset period; wherein the preset period includes at least one transmission time unit, and the first The second preset transmission time unit is greater than the first preset transmission time unit; the working mode includes: sending the dedicated air interface signal of the first base station itself in the first time window, and listening to the air interface signal sent by the second base station in the second time window the first air interface signal, and the first working mode of sending the third air interface signal in the third time window; and, listening to the fourth air interface signal sent by the second base station in the first time window, and sending the fifth air interface in the second time window signal, and listen to the second working mode of the sixth air interface signal sent by the second base station in the third time window; wherein, the fifth air interface signal includes the fourth air interface signal and the dedicated air interface signal of the first base station itself.

Optionally, the processor 902 is configured to, according to the preset correspondence between the base station identifier and the frequency domain resource for sending the dedicated air interface signal, obtain the base station identifier of the second base station corresponding to the base station identifier for sending the second base station itself. The dedicated frequency domain resource of the dedicated air interface signal of the dedicated air interface signal; according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource, obtain the information sent by the second base station.

Optionally, the information sent by the second base station includes the transmission direction of the second base station in the current time slot; wherein, when the dedicated frequency domain resource is the first frequency domain resource and the first frequency domain resource is sent When the sequence type of the second base station is the first sequence type, the transmission direction of the second base station in the current time slot is the uplink transmission direction; when the dedicated frequency domain resource is the second frequency domain resource and the second frequency domain resource sends When the sequence type of the second base station is the second sequence type, the transmission direction of the second base station in the current time slot is the downlink transmission direction; when the dedicated frequency domain resource is the third frequency domain resource and the transmission is sent on the third frequency domain resource When the sequence type is the third sequence type, the second base station is in an idle state in the current time slot.

Optionally, the processor 902 is configured to, when the information sent by the second base station includes the transmission direction of the second base station in the current time slot, determine according to the transmission direction of the second base station in the current time slot. Downlink channel quality measurement results matching the current channel of the first base station.

In addition, as shown in FIG. 10, an embodiment of the present invention further provides a base station, the base station includes a memory 1001, a processor 1002, a transceiver 1003, and a computer program stored in the memory 1001 and running on the processor 1002; The processor 1002 is used to read the computer program in the memory 1001, and execute the following processes:

The processor 1002 listens to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window in the transmission time unit for uplink or downlink data transmission through the transceiver 1003, and sends the first time window in the second time window. An air interface signal; wherein the first air interface signal includes a second air interface signal sensed by the second base station and a dedicated air interface signal of the second base station itself.

In FIG. 10, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1002 and various circuits of memory represented by memory 1001 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface 1004 provides the interface. Transceiver 1003 may be a number of elements, including transmitters and transceivers, that provide means for communicating with various other devices over a transmission medium.

The processor 1002 is responsible for managing the bus architecture and general processing, and the memory 1001 may store data used by the processor 1002 in performing operations.

Optionally, through the transceiver 1003, the processor 1002 is further configured to, in a transmission time unit for uplink or downlink data transmission, listen for a third air interface signal in a third time window, wherein the third air interface signal at least Including the first air interface signal.

Optionally, the processor 1002 is configured to monitor whether the dedicated air interface signal of the first base station itself can be detected in the first time window of the first preset transmission time unit; When a base station has its own dedicated air interface signal, the working mode of the second base station is periodically changed according to a preset period; when the dedicated air interface signal of the first base station cannot be detected, the second base station is randomly changed. working mode, and when monitoring the dedicated air interface signal of the first base station itself in the second preset transmission time unit, periodically changing the working mode of the second base station according to the preset period; wherein , the preset period includes at least one transmission time unit, and the second preset transmission time unit is greater than the first preset transmission time unit; the working mode includes: listening to the first base station in the first time window Sending the dedicated air interface signal of the first base station itself, sending the first air interface signal in the second time window, and listening to the third working mode of the third air interface signal in the third time window; and sending the second base station in the first time window. A fourth working mode in which its own dedicated air interface signal listens to the fifth air interface signal sent by the first base station in the second time window, and sends the sixth air interface signal in the third time window; wherein, the sixth air interface signal at least includes the fifth air interface signal.

Optionally, the processor 1002 is configured to, according to the preset correspondence between the base station identifier and the frequency domain resource for sending the dedicated air interface signal, obtain the base station identifier of the first base station corresponding to the base station identifier for sending the first base station itself. The dedicated frequency domain resource of the dedicated air interface signal of the dedicated air interface signal; according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource, obtain the information sent by the first base station.

Optionally, the information sent by the first base station includes the transmission direction of the first base station in the current time slot; wherein, when the dedicated frequency domain resource is the first frequency domain resource and the first frequency domain resource is sent on the first frequency domain resource When the sequence type of the first base station is the first sequence type, the transmission direction of the first base station in the current time slot is the uplink transmission direction; when the dedicated frequency domain resource is the second frequency domain resource and the second frequency domain resource sends When the sequence type of the first base station is the second sequence type, the transmission direction of the first base station in the current time slot is the downlink transmission direction; when the dedicated frequency domain resource is the third frequency domain resource and the third frequency domain resource sends When the sequence type is the third sequence type, the first base station is in an idle state in the current time slot.

Optionally, the processor 1002 is configured to, when the information sent by the first base station includes the transmission direction of the first base station in the current time slot, determine according to the transmission direction of the first base station in the current time slot. Downlink channel quality measurement results matching the current channel of the second base station.

In addition, an embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

In the transmission time unit for uplink or downlink data transmission, the dedicated air interface signal of the first base station itself is sent in the first time window, and the first air interface signal sent by the second base station is monitored in the second time window; wherein, the The first air interface signal includes the second air interface signal sensed by the second base station and the dedicated air interface signal of the second base station itself.

Optionally, in a transmission time unit for uplink or downlink data transmission, a third air interface signal is sent in a third time window, wherein the third air interface signal at least includes the first air interface signal.

Optionally, monitor whether the first air interface signal can be detected in the second time window of the first preset transmission time unit; when the first air interface signal can be detected, according to a preset period, periodically Changing the working mode of the first base station; when the first air interface signal cannot be sensed, randomly changing the working mode of the first base station, and when it is detected that the first base station can be sensed in the second preset transmission time unit When the first air interface signal is used, the working mode of the first base station is periodically changed according to the preset period; wherein, the preset period includes at least one transmission time unit, and the second preset transmission time unit is greater than The first preset transmission time unit; the working mode includes: sending the dedicated air interface signal of the first base station in the first time window, listening to the first air interface signal sent by the second base station in the second time window, and in the second time window. The first working mode in which the third air interface signal is sent in the third time window; and the fourth air interface signal sent by the second base station is monitored in the first time window, the fifth air interface signal is sent in the second time window, and the third air interface signal is sent in the third time window. The window listens to the second working mode of the sixth air interface signal sent by the second base station; wherein the fifth air interface signal includes the fourth air interface signal and the dedicated air interface signal of the first base station itself.

Optionally, after the step of listening to the first air interface signal sent by the second base station in the second time window, according to the preset correspondence between the base station identifier and the frequency domain resource for sending the dedicated air interface signal, obtain the second air interface signal. The dedicated frequency domain resource corresponding to the base station identifier of the base station and used for sending the dedicated air interface signal of the second base station itself; according to the dedicated frequency domain resource and the type of the sequence sent on the dedicated frequency domain resource, obtain the data sent by the second base station. Information.

Optionally, the information sent by the second base station includes the transmission direction of the second base station in the current time slot; wherein, when the dedicated frequency domain resource is the first frequency domain resource and the first frequency domain resource is sent When the sequence type of the second base station is the first sequence type, the transmission direction of the second base station in the current time slot is the uplink transmission direction; when the dedicated frequency domain resource is the second frequency domain resource and the second frequency domain resource sends When the sequence type of the second base station is the second sequence type, the transmission direction of the second base station in the current time slot is the downlink transmission direction; when the dedicated frequency domain resource is the third frequency domain resource and the transmission is sent on the third frequency domain resource When the sequence type is the third sequence type, the second base station is in an idle state in the current time slot.

Optionally, when the information sent by the second base station includes the transmission direction of the second base station in the current time slot, the current time slot with the first base station is determined according to the transmission direction of the second base station in the current time slot. Channel matching downlink channel quality measurement results.

In addition, an embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

In the transmission time unit for uplink or downlink data transmission, the dedicated air interface signal of the first base station itself sent by the first base station is monitored in the first time window, and the first air interface signal is sent in the second time window; wherein, the The first air interface signal includes the second air interface signal sensed by the second base station and the dedicated air interface signal of the second base station itself.

Optionally, in a transmission time unit for uplink or downlink data transmission, a third air interface signal is monitored in a third time window, wherein the third air interface signal at least includes the first air interface signal.

Optionally, monitor whether the dedicated air interface signal of the first base station itself can be sensed in the first time window of the first preset transmission time unit; when the dedicated air interface signal of the first base station itself can be sensed , periodically changing the working mode of the second base station according to a preset period; when the dedicated air interface signal of the first base station itself cannot be detected, randomly changing the working mode of the second base station, and when monitoring When the dedicated air interface signal of the first base station itself can be detected in the second preset transmission time unit, the working mode of the second base station is periodically changed according to the preset period; wherein the preset period includes at least One transmission time unit, and the second preset transmission time unit is greater than the first preset transmission time unit; the working mode includes: listening to the first base station's own dedicated transmission sent by the first base station in the first time window The air interface signal, sending the first air interface signal in the second time window, and listening to the third working mode of the third air interface signal in the third time window; and sending the dedicated air interface signal of the second base station itself in the first time window, in the first time window. Listening to the fifth air interface signal sent by the first base station in the second time window, and sending the fourth working mode of the sixth air interface signal in the third time window; wherein the sixth air interface signal at least includes the fifth air interface signal.

Optionally, after the step of listening to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window, according to the preset correspondence between the base station identifier and the frequency domain resources for sending the dedicated air interface signal, Obtain the dedicated frequency domain resource corresponding to the base station identifier of the first base station and used for sending the dedicated air interface signal of the first base station itself; according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource, obtain the first base station. information sent by a base station.

Optionally, the information sent by the first base station includes the transmission direction of the first base station in the current time slot; wherein, when the dedicated frequency domain resource is the first frequency domain resource and the first frequency domain resource is sent on the first frequency domain resource When the sequence type of the first base station is the first sequence type, the transmission direction of the first base station in the current time slot is the uplink transmission direction; when the dedicated frequency domain resource is the second frequency domain resource and the second frequency domain resource sends When the sequence type of the first base station is the second sequence type, the transmission direction of the first base station in the current time slot is the downlink transmission direction; when the dedicated frequency domain resource is the third frequency domain resource and the third frequency domain resource sends When the sequence type is the third sequence type, the first base station is in an idle state in the current time slot.

Optionally, when the information sent by the first base station includes the transmission direction of the first base station in the current time slot, the current time slot with the second base station is determined according to the transmission direction of the first base station in the current time slot. Channel matching downlink channel quality measurement results.

The above are the preferred embodiments of the present invention, and it should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles described in the present invention, and these improvements and modifications are also included in the present invention. within the scope of protection of the invention.

Claims (15)

1. A communication method between base stations, applied to a first base station, wherein the communication method comprises: In the transmission time unit for uplink or downlink data transmission, the dedicated air interface signal of the first base station itself is sent in the first time window, and the first air interface signal sent by the second base station is monitored in the second time window; wherein, the The first air interface signal includes the second air interface signal sensed by the second base station and the dedicated air interface signal of the second base station itself; monitoring whether the first air interface signal can be detected in the second time window of the first preset transmission time unit; When the first air interface signal can be detected, periodically changing the working mode of the first base station according to a preset period; When the first air interface signal cannot be detected, the working mode of the first base station is randomly changed, and when it is detected that the first air interface signal can be detected in the second preset transmission time unit, According to the preset period, the working mode of the first base station is periodically changed; wherein, The preset period includes at least one transmission time unit, and the second preset transmission time unit is greater than the first preset transmission time unit. 2. The communication method according to claim 1, wherein the communication method further comprises: In a transmission time unit for uplink or downlink data transmission, a third air interface signal is sent in a third time window, wherein the third air interface signal at least includes the first air interface signal. 3 . The communication method according to claim 2 , wherein the working mode comprises: sending a dedicated air interface signal of the first base station itself in a first time window, and listening to the first air interface signal sent by the second base station in a second time window. 4 . an air interface signal, and the first working mode of sending the third air interface signal in the third time window; and, listening to the fourth air interface signal sent by the second base station in the first time window, and sending the fifth air interface signal in the second time window , and listen to the second working mode of the sixth air interface signal sent by the second base station in the third time window; wherein, The fifth air interface signal includes the fourth air interface signal and the dedicated air interface signal of the first base station itself. 4. The communication method according to claim 1, wherein the communication method further comprises: According to the preset correspondence between the base station identifier and the frequency domain resource for sending the exclusive air interface signal, obtain the exclusive frequency domain resource corresponding to the base station identifier of the second base station and used for sending the exclusive air interface signal of the second base station itself; The information sent by the second base station is acquired according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource. 5. The communication method according to claim 4, wherein the information sent by the second base station comprises the transmission direction of the second base station in the current time slot; wherein, When the dedicated frequency domain resource is the first frequency domain resource and the sequence type sent on the first frequency domain resource is the first sequence type, the transmission direction of the second base station in the current time slot is the uplink transmission direction; When the dedicated frequency domain resource is the second frequency domain resource and the sequence type sent on the second frequency domain resource is the second sequence type, the transmission direction of the second base station in the current time slot is the downlink transmission direction; When the dedicated frequency domain resource is the third frequency domain resource and the sequence type sent on the third frequency domain resource is the third sequence type, the second base station is in an idle state in the current time slot. 6. The communication method according to claim 5, wherein when the information sent by the second base station includes the transmission direction of the second base station in the current time slot, the communication method further comprises: According to the transmission direction of the second base station in the current time slot, a downlink channel quality measurement result matching the current channel of the first base station is determined. 7. A communication method between base stations, applied to a second base station, wherein the communication method comprises: In the transmission time unit for uplink or downlink data transmission, the dedicated air interface signal of the first base station itself sent by the first base station is monitored in the first time window, and the first air interface signal is sent in the second time window; wherein, the The first air interface signal includes the second air interface signal sensed by the second base station and the dedicated air interface signal of the second base station itself; Monitoring whether the dedicated air interface signal of the first base station itself can be detected in the first time window of the first preset transmission time unit; When the dedicated air interface signal of the first base station itself can be detected, periodically changing the working mode of the second base station according to a preset period; When the dedicated air interface signal of the first base station itself cannot be sensed, the working mode of the second base station is randomly changed, and when it is monitored that the first base station can be sensed in the second preset transmission time unit When the base station has its own dedicated air interface signal, the working mode of the second base station is periodically changed according to the preset period; wherein, The preset period includes at least one transmission time unit, and the second preset transmission time unit is greater than the first preset transmission time unit. 8. The communication method according to claim 7, wherein, The working mode includes: listening to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window, sending the first air interface signal in the second time window, and listening to the third air interface signal in the third time window and send the dedicated air interface signal of the second base station itself in the first time window, listen to the fifth air interface signal sent by the first base station in the second time window, and send the sixth air interface signal in the third time window The fourth working mode of ; in which, The sixth air interface signal includes at least the fifth air interface signal. 9. The communication method according to claim 7, wherein the communication method further comprises: According to the preset correspondence between the base station identifier and the frequency domain resource for sending the exclusive air interface signal, obtain the exclusive frequency domain resource corresponding to the base station identifier of the first base station and used for sending the exclusive air interface signal of the first base station itself; The information sent by the first base station is acquired according to the dedicated frequency domain resource and the sequence type sent on the dedicated frequency domain resource. 10. The communication method according to claim 9, wherein the information sent by the first base station comprises the transmission direction of the first base station in the current time slot; wherein, When the dedicated frequency domain resource is the first frequency domain resource and the sequence type sent on the first frequency domain resource is the first sequence type, the transmission direction of the first base station in the current time slot is the uplink transmission direction; When the dedicated frequency domain resource is the second frequency domain resource and the sequence type sent on the second frequency domain resource is the second sequence type, the transmission direction of the first base station in the current time slot is the downlink transmission direction; When the dedicated frequency domain resource is the third frequency domain resource and the sequence type sent on the third frequency domain resource is the third sequence type, the first base station is in an idle state in the current time slot. 11. The communication method according to claim 10, wherein when the information sent by the first base station includes the transmission direction of the first base station in the current time slot, the communication method further comprises: According to the transmission direction of the first base station in the current time slot, a downlink channel quality measurement result matching the current channel of the second base station is determined. 12. An inter-base station communication device, applied to a first base station, wherein the communication device comprises: The signal transmission module is used to send the dedicated air interface signal of the first base station itself in the first time window in the transmission time unit for uplink or downlink data transmission, and listen to the first air interface sent by the second base station in the second time window signal; wherein the first air interface signal includes the second air interface signal sensed by the second base station and the dedicated air interface signal of the second base station itself; monitoring whether the first air interface signal can be detected in the second time window of the first preset transmission time unit; When the first air interface signal can be detected, periodically changing the working mode of the first base station according to a preset period; When the first air interface signal cannot be detected, the working mode of the first base station is randomly changed, and when it is detected that the first air interface signal can be detected in the second preset transmission time unit, According to the preset period, the working mode of the first base station is periodically changed; wherein, The preset period includes at least one transmission time unit, and the second preset transmission time unit is greater than the first preset transmission time unit. 13. A communication device between base stations, applied to a second base station, wherein the communication device comprises: The signal transmission module is used to listen to the dedicated air interface signal of the first base station itself sent by the first base station in the first time window in the transmission time unit for uplink or downlink data transmission, and send the first air interface in the second time window signal, wherein the first air interface signal includes the second air interface signal sensed by the second base station and the dedicated air interface signal of the second base station itself; Monitoring whether the dedicated air interface signal of the first base station itself can be detected in the first time window of the first preset transmission time unit; When the dedicated air interface signal of the first base station itself can be detected, periodically changing the working mode of the second base station according to a preset period; When the dedicated air interface signal of the first base station itself cannot be sensed, the working mode of the second base station is randomly changed, and when it is monitored that the first base station can be sensed in the second preset transmission time unit When the base station has its own dedicated air interface signal, the working mode of the second base station is periodically changed according to the preset period; wherein, The preset period includes at least one transmission time unit, and the second preset transmission time unit is greater than the first preset transmission time unit. 14. A base station, characterized in that the base station comprises a memory, a processor, a transceiver, and a computer program stored in the memory and running on the processor; it is characterized in that, when the processor executes the computer program, it realizes The communication method according to any one of claims 1 to 6 or the communication method according to any one of claims 7 to 11 . 15. A computer-readable storage medium on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the communication method according to any one of claims 1 to 6 or claims are implemented 7 to the communication method according to any one of claims 11.

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