WO2019061368A1 - Communication method and device - Google Patents

Abstract

A communication method and device, the method comprising: a terminal device receiving broadcast information, wherein the broadcast information may comprise related information of a plurality of cells, such as random access resource information; the terminal device selecting a first cell from among the plurality of cells, and accessing the first cell according to the random access resource information of the first cell, further transmitting information with the first cell. As such, since the terminal device may receive the broadcast information and acquire the random access resource information of the plurality of cells, the terminal device may successfully access any one cell from among the plurality of cells according to the random access resource information of the plurality of cells when downlink interference is high so as to facilitate subsequent communication between the terminal device and the accessed cell.

Description

Communication method and device Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a communication method and apparatus.

Background technique

Drones, referred to as "unmanned aerial vehicles", have gradually penetrated into the civilian sector from the early military drone technology. In the past two years, due to the maturity of drone technology, the decline of cost, and the driving of policies, the drone industry has developed rapidly, and the market demand has increased at an annual rate of 1.3 times. UAV applications are infiltrating into all aspects of the traditional industry. From simple basic transportation functions, carrying different cargoes, turning to different mission equipment, expanding into the fields of aerial photography, surveying and mapping, agricultural plant protection, etc. The important terminal equipment components show three major trends: flight intelligence, transmission bandwidth and functional diversification.

Among them, flight intelligence means that the future drones should be intelligent, not just passive flight of instructions. UAVs should be able to self-determine, perceive airspace changes, and perform actions such as active avoidance and route re-planning through sensors, cameras, network control and other technologies. Transmission broadband means that the future UAV transmission should be broadband. It is required to be able to share the collected data with other devices in real time, cooperate and cooperate to meet the needs of different tasks, and support data similar to the power inspection UAV upstream 250Mbps. Transmission requirements. Functional diversification means that the future drone function should be diversified. In addition to the ability to have line-of-sight flight capability, it also needs to meet the business needs of over-the-horizon flight; in addition to the ability to keep information confidential and anti-interference, avoid business information. Being tampered with, it is also necessary to meet the needs of timely interaction between information and other communication devices, and to coordinate the division of labor.

In line with the future development trend of drones, it is necessary to have a communication network that matches it, and it is necessary to do a good job of low-altitude coverage network protection. For example, the primary task of UAV networking is to realize the communication between UAVs and other communication devices, realizing network control of drones and real-time backhaul of information, pictures, videos, etc. during navigation, and the coverage of low-altitude coverage networks is directly Affect the development process of drone networking applications.

Currently, the 3rd Generation Partnership Project (3GPP) gives a detailed description of the network requirements for UAV networking services. Since drones have different network requirements from existing smart devices (such as mobile phones), when using the network to support drone communication, there are a series of problems, such as the drone may receive multiple neighbors. The downlink signal of the area causes the downlink interference to be large, which seriously affects the communication.

Summary of the invention

The present application provides a communication method for solving the technical problem that the downlink interference is large during the communication process of the UAV device and seriously affects the communication.

In a first aspect, the application provides a communication method, the method comprising:

The terminal device receives broadcast information, where the broadcast information includes random access resource information of multiple cells;

The terminal device selects a first cell from the multiple cells, and accesses the first cell according to random access resource information of the first cell.

In this way, since the terminal device can receive the broadcast information and acquire the random access resource information of the multiple cells, the terminal device can successfully connect according to the random access resource information of the multiple cells in the case that the downlink interference is large. Entering any one of the multiple cells, facilitating subsequent terminal devices to communicate with the accessed cells, effectively avoiding The interference of the terminal link may be too large, and the terminal device may not be able to resolve the SIB message related to the random access that needs to be scheduled by the control channel to be transmitted in the data channel, thereby failing to successfully access the cell and affecting the communication problem of the terminal device.

In a possible design, the broadcast information further includes reference signal resource information of the plurality of cells;

The selecting, by the terminal device, the first cell from the multiple cells, includes:

The terminal device measures, according to reference signal resource information of the multiple cells, signal quality of the multiple cells;

The terminal device selects a first cell with the best signal quality from the plurality of cells.

In this manner, in a scenario where the downlink interference is large and the terminal cannot measure the multiple cells, the broadcast information includes reference signal resource information of multiple cells, so that the terminal can measure multiple cells, which is convenient for selecting and connecting. Enter the cell with the best signal quality. In other possible implementation manners, if the terminal can directly measure the multiple cells, the reference information resource information of the multiple cells may not be included in the broadcast information.

In a possible design, the broadcast information further includes control channel resource information of the multiple cells;

After the terminal device accesses the first cell, the method further includes:

The terminal device acquires control information of the first cell according to control channel resource information of the first cell.

In this way, the terminal can obtain the control channel resource information of the first cell by using the broadcast information, and the control channel resources of the multiple cells are orthogonal, so that the control channels of the multiple cells do not interfere with each other, thereby effectively avoiding the downlink interference. The problem that the terminal cannot obtain the control information of the first cell.

In a possible design, the broadcast information further includes a transmit power of a reference signal of the multiple cells and/or interference ratio noise IoT information of the multiple cells;

After the terminal device accesses the first cell, the method further includes:

The terminal device adjusts an uplink transmit power according to a transmit power of a reference signal of the multiple cells and/or IoT information of the multiple cells.

In this way, by adjusting the uplink transmission power, it is possible to effectively reduce uplink interference generated by the uplink signal transmitted by the terminal device (unmanned device) to the ground terminal device.

In a possible design, the broadcast information further includes data channel time-frequency resource information of the multiple cells;

After the terminal device accesses the first cell, the method further includes:

The terminal device transmits data by using the data channel resource of the first cell according to the data channel resource information of the first cell.

As such, the terminal device can transmit data using orthogonal or partially orthogonal data channel resources, thereby reducing interference of data transmission.

In a possible design, the terminal device receives broadcast information, including:

The terminal device detects the synchronization signal of the first network access device, and determines the first time according to the positional relationship between the time-frequency resource of the synchronization signal of the first network access device and the first time-frequency resource. a frequency resource; the first network access device is any one of network access devices to which the multiple cells belong;

The terminal device receives the broadcast information on the first time-frequency resource.

In a possible design, the terminal device receives broadcast information, including:

The terminal device receives the indication information that is sent by the second cell, where the indication information is used to indicate the first time-frequency resource, and the second cell is the that the terminal device accesses before accessing the first cell. Any of a plurality of cells.

The terminal device receives broadcast information on the first time-frequency resource.

In a second aspect, the application provides a communication method, where the method includes:

The first network access device generates broadcast information; the broadcast information includes random access resource information of multiple cells;

The first network access device sends the broadcast information.

In a possible design, the first network access device generates broadcast information, including:

Receiving, by the first network access device, the first message sent by the network access device except the first network access device, respectively, of the at least one network access device of the network access device to which the multiple cells belong The first message sent by any one of the other network access devices includes the random access resource information of the cell covered by the any network access device; where the cell covered by any network access device It may refer to all cells covered by any network access device, or may refer to a part of cells covered by any network access device, which may be determined according to multiple cells, if multiple cells include network access device coverage. The first message sent by the network device includes random access resource information of each cell covered by the network access device.

The time-frequency resource location, the transmission mode (modulation coding mode, transmission mode), and the information content of the broadcast information transmission need to be consistent among a plurality of cells. It can be configured through the network, such as OAM (Operation, Administration and Maintenance, a network management entity), or the network access device to which multiple cells belong can be negotiated through the X2 interface.

The first network access device generates the broadcast information according to the first message respectively sent by the other network access devices.

In a possible design, the first message sent by any one of the other network access devices may also include any one or any combination of the following:

Reference signal resource information of a cell covered by any network access device; control channel resource information of a cell covered by any one of the network access devices; and data channel resource information of a cell covered by the any network access device The transmit power of the cell covered by any of the network access devices; the IoT information of the cell covered by the any network access device.

In a possible design, the first network access device sends broadcast information, including:

The first network access device sends the broadcast information on the first time-frequency resource, and the first time-frequency resource is determined by the network access device to which the multiple cells belong.

In a third aspect, the application provides a terminal, where the terminal includes:

a transceiver module, configured to receive broadcast information, where the broadcast information includes random access resource information of the multiple cells;

And a processing module, configured to select a first cell from the multiple cells, and access the first cell according to the random access resource information of the first cell.

In a possible design, the transceiver module is specifically configured to:

Receiving the broadcast information sent by the first network access device, where the first network access device is any one of the network access devices to which the multiple cells belong; or

Receiving, by the network access device to which the multiple cells belong, the same modulation and coding mode and the broadcast information transmitted by the same transmission mode on the same time-frequency resource.

In a possible design, the broadcast information further includes reference signal resource information of the multiple cells;

The processing module is specifically configured to:

And measuring, according to reference signal resource information of the multiple cells, signal quality of the multiple cells;

A first cell with the best signal quality is selected from the plurality of cells.

In a possible design, the broadcast information further includes control channel resource information of the multiple cells;

The transceiver module is further configured to:

Obtaining control information of the first cell according to the control channel resource information of the first cell.

In a possible design, the broadcast information further includes a transmit power of a reference signal of the multiple cells and/or interference ratio noise IoT information of the multiple cells;

The processing module is further configured to:

Adjusting the uplink transmission power according to the transmission power of the reference signals of the plurality of cells and/or the IoT information of the plurality of cells.

In a possible design, the broadcast information further includes data channel resource information of the multiple cells;

The processing module is further configured to:

And transmitting data according to the data channel resource information of the first cell by using the data channel resource of the first cell.

In one possible design, the processing module is specifically configured to:

Detecting the synchronization signal of the first network access device, and determining the first time-frequency resource according to the positional relationship between the time-frequency resource of the synchronization signal of the first network access device and the first time-frequency resource ;

The transceiver module is specifically configured to:

Receiving the broadcast information on the first time-frequency resource.

In a possible design, the transceiver module is specifically configured to:

Receiving indication information sent by the second cell, where the indication information is used to indicate the first time-frequency resource; the second cell is in the multiple cells that are accessed by the terminal device before accessing the first cell Any cell.

Receiving the broadcast information on the first time-frequency resource.

In a fourth aspect, the application provides a network access device, where the network access device includes:

a processing module, configured to generate broadcast information, where the broadcast information includes random access resource information of the multiple cells;

And a transceiver module, configured to send the broadcast information.

In a possible design, the transceiver module is specifically configured to:

Receiving, by the network access device of the network access device to which the multiple cells belong, a first message sent by a network access device other than the first network access device; the other network access device The first message sent by any one of the network access devices includes random access resource information of a cell covered by the any network access device;

The processing module is specifically configured to:

Generating the broadcast information according to the first message respectively sent by the other network access devices.

In a possible design, the first message sent by any one of the other network access devices may also include any one or any combination of the following:

Reference signal resource information of a cell covered by any network access device; control channel resource information of a cell covered by any one of the network access devices; and data channel resource information of a cell covered by the any network access device The transmit power of the cell covered by any of the network access devices; the IoT information of the cell covered by the any network access device.

In a possible design, the transceiver module is specifically configured to:

And transmitting the broadcast information on the first time-frequency resource, where the first time-frequency resource is negotiated and determined by the network access device to which the multiple cells belong.

In a fifth aspect, the application provides a communication device, which may be a terminal or a terminal. The internal chip may also be a chip inside the network access device or the network access device, and the communication device has a function of implementing the foregoing first or second method example; the communication device includes: a communication module, a processor;

The communication module is configured to perform communication interaction with other devices, and the communication module may be an RF circuit, a WiFi module, a communication interface, a Bluetooth module, or the like.

The processor is configured to implement the functions of the processing module in the third aspect or the fourth aspect.

Optionally, the communication device may further include: a memory for storing a program or the like. In particular, the program can include program code, the program code including instructions. The memory may contain RAM and may also include non-volatile memory, such as at least one disk storage. The processor executes the application stored in the memory to implement the above functions.

In one possible approach, the communication module, the processor, and the memory can be interconnected by a bus; the bus can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA). Bus, etc. The bus can be divided into an address bus, a data bus, a control bus, and the like.

The present application also provides a computer readable storage medium storing instructions that, when executed on a computer, cause the computer to implement a communication method provided by any of the above designs.

The present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the communication method provided by any of the above designs.

The present application also provides a computer program that, when run on a computer, causes the computer to perform the communication method provided by any of the above designs.

DRAWINGS

1 is a schematic diagram of a system architecture applicable to the present application;

2 is a schematic flow chart of a communication method provided by the present application;

3 is a schematic diagram of related information of three network access devices interacting with each cell;

4 is another schematic flowchart of a communication method provided by the present application;

FIG. 5 is a schematic structural diagram of a terminal provided by the present application;

FIG. 6 is a schematic structural diagram of a network access device provided by the present application;

FIG. 7 is a schematic structural diagram of a communication device provided by the present application.

Detailed ways

The present application will be specifically described below in conjunction with the drawings.

The communication method in the present application can be applied to multiple system architectures. FIG. 1 is a schematic diagram of a system architecture applicable to the present application. As shown in FIG. 1, the system architecture includes one or more network access devices (such as the first network access device 1011, the second network access device 1012, and the third network access device 1013 shown in FIG. 1). One or more terminal devices (such as the first terminal device 1021, the second terminal device 1022, and the third terminal device 1023 shown in FIG. 1). The cell that the network access device covers may be one or more, and is not limited. As shown in FIG. 1 , the cell covered by the first network access device 1011 is the cell 1 and the second network access device 1012 is covered. The cell is the cell 2, and the cell covered by the third network access device 1013 is the cell 3.

The first terminal device 1021, the second terminal device 1022, and the third terminal device 1023 move to any one of the first network access device 1011, the second network access device 1012, and the third network access device 1013. Covered In the case of a cell, the network access device can be accessed and transmitted with the accessed network access device.

Among them, the terminal is a device with wireless transceiver function, which can be deployed on land, indoors or outdoors, handheld or on-board; it can also be deployed on the water surface (such as ships); it can also be deployed in the air (such as airplanes, balloons). And satellites, etc.). The terminal may be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, industrial control (industrial control) Wireless terminal, wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety, A wireless terminal in a smart city, a wireless terminal in a smart home, and the like.

In the present application, for convenience of description, the terminal device can be divided into two categories: (1) a ground terminal device, that is, a terminal device that frequently works on the ground; and (2) a drone device, that is, a terminal that frequently works in the air. device. In the system architecture shown in FIG. 1, the first terminal device 1021 and the second terminal device 1022 are ground terminal devices, and the third network access device 1013 is a drone device. The communication method provided by the present application can be applied to any type of terminal device, and is particularly suitable for a UAV device or other terminal device capable of receiving signals of a plurality of cells and having serious uplink and downlink interference, and the following mainly uses a drone. The device is described as an example.

The network access device may be a base station (BS). A base station device, also referred to as a base station, is a device deployed in a wireless access network to provide wireless communication functionality. For example, a device that provides a base station function in a 2G network includes a base transceiver station (BTS) and a base station controller (BSC), and devices that provide base station functions in the 3G network include a node B (nodeB) and wireless A radio network controller (RNC), the device providing the base station function in the 4G network includes an evolved node B (eNB), and the device providing the base station function in the 5G NR network includes a new wireless node B, a centralized unit A centralized unit (CU), a distributed unit (DU), and a new wireless controller. In a WLAN, a device that provides a base station function is an access point (AP).

The communication system applicable to the above system architecture includes but is not limited to: time division duplexing-long term evolution (TDD LTE), frequency division duplexing-long term evolution (FDD LTE) Long term evolution-advanced (LTE-advanced), long term evolution-machine to machine communication (LTE M2M), and various wireless communication systems for future evolution (eg, 5G) NR system).

Taking the terminal device as an unmanned device as an example, since the UAV device works in the air, the propagation environment and the ground are different, resulting in different characteristics from the ground communication. Due to the obstruction of obstacles in the air, almost all of the line of sight (LOS) paths allow the drone equipment to receive downlink signals from multiple neighboring areas, resulting in downlink interference. Especially in the scenario where the base station is densely distributed or the drone equipment is higher than the ground, the interference of the downlink is more serious, which affects the communication of the drone equipment.

Based on this, the present application provides a communication method, the method includes: receiving, by a terminal device, broadcast information, where the broadcast information may include related information of multiple cells, such as random access resource information; and the terminal device is from the multiple cells. Selecting the first cell, and accessing the first cell according to the random access resource information of the first cell, and further performing information transmission with the first cell. In this way, since the terminal device can receive the broadcast information and acquire the random access resource information of the multiple cells, the terminal device can successfully connect according to the random access resource information of the multiple cells in the case that the downlink interference is large. Entering any one of the multiple cells, facilitating subsequent terminal devices to communicate with the accessed cells, The utility model avoids the problem that the terminal device may not successfully access the cell due to the large downlink interference, thereby affecting the communication of the terminal device.

In this application, it is considered that the interference of the downlink of the terminal device may be different in different scenarios. For example, in some scenarios where the interference is serious, the terminal device may not detect the synchronization signal of the cell, and thus cannot be connected. In the scenario where the interference is severe, the terminal device may detect the synchronization signal of the cell, but may not obtain the random access resource information of the cell. Correspondingly, the content included in the broadcast information may also have multiple possible scenarios. Specifically, the content included in the broadcast information may be any one or any combination of the following: (1) reference signal resource information of multiple cells; (a) random access resource information of multiple cells; (3) control channel resource information of multiple cells; (4) transmission power of reference signals of multiple cells; (5) interference over thermal of multiple cells (interference over thermal , IoT) information; (6) orthogonal data channel resources of multiple cells. It should be noted that the related information of the multiple cells, for example, the reference signal resource information of multiple cells, specifically refers to reference signal resource information of each of the multiple cells.

The above several kinds of information are separately introduced separately.

(1) Reference signal resource information of multiple cells

The format is: multiple cell identifiers corresponding to orthogonal reference signal resources, as shown in Table 1; wherein the cell identifier may be a physical cell identifier (PCI) or a global cell identification (CGI), etc. The information of each cell can be uniquely indicated, or can be a different identifier pre-assigned to each cell, and the identifier correspondence table is broadcast to the terminal device.

Table 1: Example of reference signal resource information of a plurality of cells included in broadcast information

Packet number	Reference signal resource information
Cell ID 1	Reference signal resource 1
Cell ID 2	Reference signal resource 2
Cell ID 3	Reference signal resource 3

In the present application, the reference signal may be a newly designed reference signal (a known signal sequence, transmitted at a determined time-frequency position), or may be a subset or a complete set selected from the original reference signals of the respective cells on the ground. It is only necessary to ensure that the reference signals of the respective cells are orthogonal, and the orthogonal relationship may be orthogonal in the time domain, the frequency domain or the code domain. The terminal device can determine which cell has better signal quality by detecting the strength of the signal.

(2) Random access resource information of multiple cells

The format is: multiple cell identifiers correspond to orthogonal random access resources, as shown in Table 2.

Table 2: Example of random access resource information of multiple cells included in broadcast information

Packet number	Random access resource information
Cell ID 1	Random access resource 1
Cell ID 2	Random access resource 2
Cell ID 3	Random access resource 3

In the present application, the random access resource may be newly designed, different from the original random access resource of each cell on the ground, or may be a subset or a complete set selected from the original random access resources of each cell on the ground, only It is required to ensure that the random access resources of multiple cells are orthogonal. Further, the random access resources may be grouped according to different time domains, may be grouped based on different frequency domains, or may be based on different code domains. For grouping, the orthogonal relationship may be orthogonal in the time domain, the frequency domain, or the code domain. The terminal device can access the cell according to random access resources of different cells.

(3) Control channel resource information of multiple cells

The format is: multiple cell identifiers correspond to orthogonal control channel resources, as shown in Table 3.

Table 3: Example of control channel resource information of a plurality of cells included in broadcast information

Packet number	Control channel resource information
Cell ID 1	Control channel resource 1
Cell ID 2	Control channel resource 2
Cell ID 3	Control channel resource 3

In the present application, the control channel resources of each cell are orthogonal, that is, there is no interference between them. The orthogonal relationship may be orthogonal in the time domain or in the frequency domain. The terminal device may acquire the time-frequency resource location of the new control channel of the cell according to the control channel resource information corresponding to the different cell, thereby receiving and demodulating the control information of the cell at the location of the new control channel, and further receiving the control information of the cell. Data scheduling and control.

(4) Transmission power of reference signals of multiple cells

The format is: the transmission power of the actual reference signal corresponding to multiple cell identifiers, as shown in Table 4.

The transmit power of the reference signal may be the transmit power of a signal such as a cell-specific reference signal (CRS) or a CSI-RS.

Table 4: Example of transmission power of reference signals of a plurality of cells included in broadcast information

Packet number	Cell reference signal transmission power
Cell ID 1	Transmit power value 1
Cell ID 2	Transmit power value 2
Cell ID 3	Transmit power value 3

In this application, the terminal device can estimate the path loss of each cell by using the transmission power of the reference signal of each cell and the RSRP measured by the downlink, thereby adjusting the uplink transmission power and reducing the interference of the uplink to the ground terminal equipment.

(5) IoT information of multiple cells

The format is: the actual IoT value corresponding to the multiple cell identifiers, or a certain transform value based on the IoT value, as shown in Table 5.

Table 5: Example of IoT values of multiple cells included in broadcast information

Packet number	IoT value
Cell ID 1	IoT value 1
Cell ID 2	IoT value 2
Cell ID 3	IoT value 3

In the present application, the terminal device can adjust the uplink transmission power by using the IoT value of multiple cells, thereby reducing uplink interference to the ground terminal equipment.

(6) Orthogonal data channel resources of multiple cells

The data channel resources are generally indicated by the control channel. Here, the data channel resources of the respective cells may be statically divided, may be completely orthogonal, partially orthogonal, and then broadcast the data channel resource information corresponding to each cell.

The format is: data channel resource information corresponding to multiple cell identifiers, as shown in Table 6.

Table 6: Example of IoT values of multiple cells included in broadcast information

Packet number	Data channel resource information
Cell ID 1	Data channel resource information 1

Cell ID 2	Data channel resource information 2
Cell ID 3	Data channel resource information 3

In the present application, the terminal device can transmit data by using orthogonal or partially orthogonal data channel resources, thereby reducing interference of data transmission.

It should be noted that the control channel resources of the multiple cells described above are orthogonal. In this application, if the backhaul links of multiple cells are ideal backhauls (ie, the transmission rate is sufficiently large) The control channel resources of multiple cells may also be transmitted in a joint manner, that is, the time-frequency resource locations of the control channels of the respective cells are the same.

Based on the above description of the broadcast information, it can be seen that in different scenarios, the content included in the broadcast information can be flexibly set according to the interference situation or other factors.

A possible communication flow will be specifically described below in conjunction with FIG.

FIG. 2 is a schematic flowchart diagram of a communication method according to an embodiment of the present application. The method includes:

Step 201: The first network access device generates broadcast information, where the broadcast information includes related information of multiple cells, for example, random access resource information of multiple cells, where the first network access device is a network connected to multiple cells. Enter any network access device in the device. In this application, the network access devices to which the multiple cells belong may have one or more. For example, there may be three network access devices, which are the network access device a, the network access device b, and the network access device c. The cell covered by any one of the three network access devices may be one or more. For example, the cell covered by the network access device a includes the cell a1 and the cell a2, and the cell covered by the network access device b is The cell b1, the cell covered by the network access device c includes a cell c1, a cell c2, and a cell c3. In this case, the multiple cells include a cell a1, a cell a2, a cell b1, a cell c1, a cell c2, and a cell c3.

In the above example, multiple cells include three cells covered by three network access devices. In this application, multiple cells may also include only a part of cells covered by three network access devices. For example, multiple cells include cell a1. a cell b1, a cell c1, a cell c2, and a cell c3. At this time, the plurality of cells do not include the cell a2 covered by the network access device a, and for example, the plurality of cells include the cell a1, the cell b1, the cell c1, and the cell c3. At the time, the plurality of cells do not include the cell a2 covered by the network access device a and the cell c2 covered by the network device c.

The random access resource information may include a random access preamble and a time-frequency resource location of the random access. The random access resources of the multiple cells are orthogonal, and the time-frequency resource location of the random access may also be indicated according to the identifier of the cell, where the cell identifier may be a PCI, a CGI, or any other identifier that can identify the cell. The invention is not limited. For the format of the random access resource information of multiple cells included in the broadcast information, refer to Table 1 above.

Specifically, the information about the multiple cells included in the broadcast information is obtained in two ways:

Manner 1: The network management device configures the network access device to which multiple cells belong, or other pre-configured methods, and the present invention is not limited.

Manner 2: The network access device to which the multiple cells belong is sent to the first network access device, where the network access device belongs to the interface between the network access device and the first network access device For example, the X2 interface may be sent by using other existing interfaces, and the present invention is not limited. Taking the first network access device as the network access device a as an example, the network access device a can generate broadcast information by receiving the first message respectively sent by the network access device b and the network access device c, wherein the network access The first message sent by the device b may include related information of the cell b1, and the first message sent by the network access device c may include related information of the cell c1, the cell c2, and the cell c3. If the plurality of cells include the area a1, the cell b1, the cell c1, and the cell c3, the first message sent by the network access device c may only include related information of the cell c1 and the cell c3, and does not include the correlation of the cell c2. information.

In this application, three network access devices may also exchange related information of each cell, so that all three devices can obtain related information of multiple cells, as shown in FIG. 3 .

It should be further noted that a large coverage area formed by the multiple cells is referred to as a virtual cell, or is referred to as a super cell, and the name is not limited, and the determining manner of the multiple cells is Two kinds:

In the first mode (static), the virtual cell is determined in advance according to a certain criterion. Specifically, the virtual cell may be determined according to the location relationship of the cell. For example, the cell 1, the cell 2, and the cell 3 are three cells adjacent to each other. Therefore, It is determined in advance that the cell 1, the cell 2, and the cell 3 constitute one virtual cell. In this case, the cells included in the virtual cell are usually fixed and do not change. The number of the cells included in the different virtual cells may be the same or different, and is not limited. In the present application, if the flight path of the terminal device is predetermined, the virtual cell may be predetermined according to the flight route of the terminal device.

Mode 2 (dynamic), in this case, the cell included in the virtual cell may dynamically change with time and terminal equipment. A possible implementation manner is that the terminal device performs downlink measurement on downlink signals of multiple cells, such as RSRP strength or path loss size, and the terminal device selects several cells according to the measurement result (for example, the communication signal quality of the terminal device can be selected. Preferably, a plurality of cells constitute a virtual cell, or the measurement result may be sent by the terminal device to the network access device, and the network access device selects a plurality of cells to form a virtual cell. Another possible implementation manner is that multiple cells receive the uplink signal sent by the terminal device for uplink measurement, and feed back the measurement result to the serving cell of the terminal device, and the serving cell selects several cells according to the measurement result (for example, may select and A plurality of cells with good communication signal quality of the terminal device constitute a virtual cell.

It should be noted that, in the scenario of dynamically determining the virtual cell, the terminal device may successfully access any one of the multiple cells (for example, the cell b1). In this case, the broadcast information in step 201 may not include the broadcast information. Part or all of the information of the multiple cells, and the network access device b sends some or all of the related information of the multiple cells to the terminal device through dedicated signaling (for example, RRC signaling).

In the third mode (semi-static), the virtual cell is first generated according to the static mode in the first mode, and the cell included in the virtual cell may be adjusted according to the downlink measurement (if any) of the terminal device in the subsequent time. The second way is combined. In this case, the cell included in the adjustment virtual cell is usually a slow process, and the specific adjustment frequency may be determined by the network, and the result of the adjustment is notified to the terminal device.

Step 202: The first network access device sends the broadcast information.

The broadcast information may be sent to the terminal device through a broadcast channel, and the broadcast channel may be a designed new broadcast channel or an existing broadcast channel design, which is not limited in the present invention. Alternatively, the broadcast information may be sent to the terminal device by using a common time-frequency resource negotiated by the network access device to which the multiple cells belong.

Optionally, the broadcast information may further include information about a downlink bandwidth, a configuration of a physical hybrid automatic redirection indicator channel (PHICH) of multiple cells, and the like, and the present invention is similar to the content in the existing broadcast message. No longer.

Further, the broadcast information may be simultaneously transmitted by the network access device to which the multiple cells belong, and the present invention refers to the joint transmission, that is, the network access devices to which the multiple cells belong have the same modulation on the same time-frequency resource. The encoding method and the same transmission mode transmit broadcast information.

Further, when the first network access device sends the broadcast channel through the broadcast channel, or the network access device to which the multiple cells belong to jointly send the broadcast information through the broadcast channel, the time-frequency resource location of the broadcast information is in the time domain. Preferably, subframes 3 and/or 8 are preferred, and in the frequency domain, 6 resource blocks in the middle of the downlink frequency band are preferred.

Before the first network access device sends the network access device to which the plurality of cells belong, the first network access device and the network access device to which the multiple cells belong, and the network to which the multiple cells belong Resource coordination is required between the ingress devices. Specifically, the resources to be coordinated include reference signal resource information of multiple cells, control channel resource information of multiple cells, data channel resource information of multiple cells, and randomization of multiple cells. At least one of access resource information, a time-frequency resource location of the broadcast channel, a modulation and coding scheme, and a transmission mode.

Further, when the network access device to which the multiple cells belong to jointly send the broadcast information, the content of the broadcast information sent by the network access device to which the multiple cells belong is the same. Therefore, the first network access device has multiple The network access devices to which the cell belongs need to negotiate the arrangement of related information of the cell. The network access device a, the network access device b, and the network access device c are taken as an example, and the content of the broadcast information sent by the device is completely the same. In specific implementation, the network access device a, the network access device b, and the network The access device c may pre-negotiate the arrangement manner of the related information of the cells included in the broadcast information. For example, the related information of the cells may be arranged according to the cell identifier.

Step 203: The terminal device receives the broadcast information.

Here, after receiving the broadcast information, the terminal device may obtain random access resource information of multiple cells by parsing.

Further, before the foregoing step 203, the method further includes: determining, by the terminal device, the first time-frequency resource. In this application, the manner in which the terminal device determines the first time-frequency resource may be multiple. For example, in the first mode, the terminal device detects the synchronization signal of the first network access device, and according to the first network access device synchronization signal. And determining, by the location relationship between the time-frequency resource and the first time-frequency resource, the first time-frequency resource; and in the second manner, the terminal device receives the indication information sent by the second cell, where the indication information is used to indicate the first time-frequency resource; The second cell is any one of the plurality of cells that the terminal device accesses before accessing the first cell.

For example, before the broadcast information is sent to the terminal device, the terminal device needs to determine the time-frequency resource location of the broadcast channel, so that the broadcast information in the broadcast channel can be correctly read. The time-frequency resource location of a specific broadcast channel is obtained in the following two ways:

Mode 1: multiple cells design a new synchronization signal SS (synchronization signal), that is, the virtual cell has a new synchronization signal, and the network access device to which the multiple cells belong periodically transmits the synchronization signal, and the terminal device scans and Get the time-frequency resource location of the broadcast channel. The synchronization signal is used to synchronize the terminal with the virtual cell. Optionally, the synchronization signal is orthogonal to resources used by the traditional LTE synchronization signal to ensure that the ground terminal is not synchronized to the virtual cell.

Manner 2: If the terminal device has access to one of the plurality of cells, the time-frequency resource location of the broadcast channel may pass the dedicated signaling through the network access device to which the accessed cell belongs, such as The RRC message is sent to the terminal device.

Step 204: The terminal device selects a first cell from the multiple cells, and accesses the first cell according to random access resource information of the first cell.

Here, the manner in which the terminal device selects the first cell from the multiple cells may be multiple. One possible implementation manner is that the related information of the cell further includes reference signal resource information of the cell, so that the terminal device can be configured according to the The reference signal resource information of the plurality of cells, the signal strength and the signal quality of the plurality of cells are measured, and the terminal device selects the signal strength from the plurality of cells by using at least one of a signal strength and a signal quality of the multiple cells The first cell with the best signal quality.

Further, the terminal device selects a random preamble sequence in the selected random access resource information of the first cell, and sends a random access request message to the network access device to which the multiple cells belong. Multiple cells After the network access device detects that there is a random preamble sequence, all the sequences are blindly detected in sequence, and the random access resources corresponding to the random preamble sequence are found, so as to find the cell identifier corresponding to the random access resource, for example, The corresponding cell is found to be the first cell, so that the network access device of the multiple cells determines whether a random access response needs to be returned to the terminal device, that is, the network access device of the first cell returns a random The access is responsive to the terminal device. Further, the random access response message further needs to include the identifier information of the terminal, where the identifier information of the terminal is used by the multiple cells to identify the terminal device.

After receiving the random access response, the terminal device sends an RRC connection request to the network access device to which the first cell belongs, and then the network access device to which the first cell belongs sends an RRC connection setup message to the terminal device. The process of establishing the RRC connection, the security authentication, the security activation, the SRB (Signaling Radio Bearer), the DRB (Data Radio Bearer), and the like is the same as the prior art, and the present invention will not be described again.

According to the above, in the present application, the terminal device receives the broadcast information on the first time-frequency resource, and acquires the random access resource information of the multiple cells, so that the terminal device can according to the random access resources of the multiple cells. The information accesses any one of the multiple cells, which effectively prevents the terminal device from being able to resolve the SIB message related to the random access that needs to be scheduled by the control channel to be transmitted in the data channel due to the large downlink interference. Successful access to the cell affects the communication of the terminal device.

Further, the related information of the cell may further include the control channel resource information and the data channel resource information of the cell. After the terminal device successfully accesses the first cell, the method may further include the following steps:

Step 205: The terminal device acquires control information of the first cell according to the control channel resource information of the first cell.

Step 206: The terminal device performs information transmission with the first cell.

Here, when performing uplink data transmission, the terminal device can adjust the transmission power of the uplink data according to the IoT and/or RS transmission power of the multiple cells, thereby effectively reducing uplink interference to other terminal devices.

In this application, depending on the IoT and/or RS transmission power of multiple cells, there are various ways to adjust the transmission power of the uplink data. One possible implementation manner is specifically described below.

The transmission power of the conventional uplink signal and the uplink channel is adjusted as follows:

P _T =min{P _MAX , P ₀ +Δ _{Format, BW} +α·PL+f}...Formula 1

P _T represents the actual transmission power of the terminal device, P _MAX is the maximum transmission power of the terminal device, P ₀ is the transmission power that the network access device expects to receive, Δ _{Format, BW} indicates the bandwidth allocated by the transmission and the modification of the transmission format. PL indicates the path loss size between the terminal device and the actual serving cell, and α is a cell-level correction parameter, and f is the accumulation of power control command values sent by the network access device.

In the above adjustment manner, the interference of the uplink signal sent by the terminal device to the neighboring area is not considered. Since the uplink signal generated by the UAV device will cause a large uplink interference to the ground terminal equipment, a correction term may be added to the uplink power control in this application, as shown in Equation 2.

P _T =min{P _MAX , P ₀ +Δ _{Format, BW} +α·PL+β+f}...Form 2

The β may include the reference signal received power (RSRP) of the neighboring cell measured by the terminal device, the path loss, and the content obtained by the IoT, for example, may be the largest RSRP in the neighboring cell, the serving cell, and The difference between the RSRP of the neighboring area (one or more), the minimum neighboring path loss, the difference of the path loss of the serving cell and the neighboring area (one or more), and the IoT of the neighboring area (one or more) . The path loss is obtained by subtracting the neighboring area RSRP value measured by the terminal device according to the reference signal of the cell in the broadcast message, and adding a possible filtering operation. Or, in β A correction parameter may also be included, which may be sent by the network access device to the terminal device through a radio resource control (RRC) message.

In this application, the manner in which the terminal device acquires the transmit power of the IoT and/or the reference signal of the multiple cells may be multiple, for example, the broadcast information includes the transmit power of the IoT and/or the reference signal of the multiple cells, and thus, The terminal device may parse the transmission power of the IoT and/or the reference signal of the multiple cells according to the received broadcast information; for example, after the terminal device accesses the first cell, the terminal device may also send multiple times to the terminal device by using the first cell. The transmission power of the IoT and/or reference signal of the cell is not limited in detail.

FIG. 4 is another schematic flowchart of a communication method provided by the present application. For details, refer to the foregoing. In FIG. 4, the network access device a, the network access device b, and the network access device c generate and jointly transmit broadcast information, and refer to step 201 and step 202 described in FIG. 2; Receiving the broadcast information and selecting the accessed cell, and the second phase, the terminal device successfully accesses the first cell, and may refer to step 203 and step 204 described in FIG. 2; in the third phase, the terminal device and the first cell perform For information transmission, reference may be made to step 205 and step 206 described in FIG.

It should be noted that only a part of the process is illustrated in FIG. 4, for example, regarding the access process, refer to the above description about FIG. 2, and all processes are not completely illustrated in FIG.

Based on the same inventive concept, the present application provides a terminal. Referring to FIG. 5, the terminal 500 includes:

The transceiver module 501 is configured to receive broadcast information, where the broadcast information includes random access resource information of the multiple cells.

The processing module 502 is configured to select a first cell from the multiple cells, and access the first cell according to the random access resource information of the first cell.

In a possible design, the transceiver module 501 is specifically configured to:

Receiving the broadcast information sent by the first network access device, where the first network access device is any one of the network access devices to which the multiple cells belong; or

Receiving, by the network access device to which the multiple cells belong, the same modulation and coding mode and the broadcast information transmitted by the same transmission mode on the same time-frequency resource.

In a possible design, the broadcast information further includes reference signal resource information of the multiple cells;

The processing module 502 is specifically configured to:

And measuring, according to reference signal resource information of the multiple cells, signal quality of the multiple cells;

A first cell with the best signal quality is selected from the plurality of cells.

In a possible design, the broadcast information further includes control channel resource information of the multiple cells;

The transceiver module 501 is further configured to:

Obtaining control information of the first cell according to the control channel resource information of the first cell.

In a possible design, the broadcast information further includes a transmit power of a reference signal of the multiple cells and/or interference ratio noise IoT information of the multiple cells;

The processing module 502 is further configured to:

Adjusting the uplink transmission power according to the transmission power of the reference signals of the plurality of cells and/or the IoT information of the plurality of cells.

In a possible design, the broadcast information further includes data channel resource information of the multiple cells;

The processing module 502 is further configured to:

And transmitting data according to the data channel resource information of the first cell by using the data channel resource of the first cell.

In a possible design, the processing module 502 is specifically configured to:

Detecting the synchronization signal of the first network access device, and determining the first time-frequency resource according to the positional relationship between the time-frequency resource of the synchronization signal of the first network access device and the first time-frequency resource ;

The transceiver module 501 is specifically configured to:

Receiving the broadcast information on the first time-frequency resource.

In a possible design, the transceiver module 501 is specifically configured to:

Receiving indication information sent by the second cell, where the indication information is used to indicate the first time-frequency resource; the second cell is in the multiple cells that are accessed by the terminal device before accessing the first cell Any cell.

Receiving the broadcast information on the first time-frequency resource.

Based on the same inventive concept, the present application provides a network access device. Referring to FIG. 6, the network access device 600 includes:

The processing module 602 is configured to generate broadcast information, where the broadcast information includes random access resource information of the multiple cells.

The transceiver module 601 is configured to send the broadcast information.

In a possible design, the transceiver module 601 is specifically configured to:

Receiving, by the network access device of the network access device to which the multiple cells belong, a first message sent by a network access device other than the first network access device; the other network access device The first message sent by any one of the network access devices includes random access resource information of a cell covered by the any network access device;

The processing module 602 is specifically configured to:

Generating the broadcast information according to the first message respectively sent by the other network access devices.

In a possible design, the first message sent by any one of the other network access devices may also include any one or any combination of the following:

Reference signal resource information of a cell covered by any network access device; control channel resource information of a cell covered by any one of the network access devices; and data channel resource information of a cell covered by the any network access device The transmit power of the cell covered by any of the network access devices; the IoT information of the cell covered by the any network access device.

In a possible design, the transceiver module 601 is specifically configured to:

And transmitting the broadcast information on the first time-frequency resource, where the first time-frequency resource is negotiated and determined by the network access device to which the multiple cells belong.

It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner. The functional modules in the embodiments of the present application may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules.

The integrated modules, if implemented in the form of software functional modules and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. , including several instructions to make a calculation The device (which may be a personal computer, server, or network access device, etc.) or processor executes all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

The present application further provides another communication device, which may be a chip inside the terminal or the terminal, or a chip inside the network access device or the network access device, for implementing FIG. 2, FIG. 3 or FIG. Corresponding processes or steps in the illustrated method embodiments. Referring to FIG. 7, the communication device 700 includes: a communication module 701, a processor 702;

The communication module 701 is configured to perform communication interaction with other devices, and the communication module 701 may be an RF circuit, a WiFi module, a communication interface, a Bluetooth module, or the like.

The processor 702 is configured to implement the functions of the processing module in FIG. 5 or FIG. 6.

Optionally, the communication device 700 may further include: a memory 704, configured to store a program or the like. In particular, the program can include program code, the program code including instructions. Memory 704 may include RAM and may also include non-volatile memory, such as at least one disk storage. The processor 702 executes the application stored in the memory 704 to implement the above functions.

In one possible manner, the communication module 701, the processor 702, and the memory 704 can be connected to each other through the bus 703; the bus 703 can be a peripheral component interconnect (PCI) bus or an extended industry standard structure ( Extended industry standard architecture, EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 7, but it does not mean that there is only one bus or one type of bus.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

The present application is described with reference to flowchart illustrations and/or block diagrams of the method, apparatus (system), and computer program product according to the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory include instructions. In the case of an article of manufacture, the instruction means implements the functions specified in a block or blocks of a flow or a flow and/or a block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims (25)

1. A communication method, characterized in that the method comprises:

   The terminal device receives broadcast information, where the broadcast information includes random access resource information of multiple cells;

   The terminal device selects a first cell from the multiple cells, and accesses the first cell according to random access resource information of the first cell.
2. The method according to claim 1, wherein the receiving, by the terminal device, the broadcast information comprises:

   The terminal device receives the broadcast information sent by the first network access device, where the first network access device is any one of the network access devices to which the multiple cells belong; or

   The terminal device receives broadcast information sent by the network access device to which the multiple cells belong to the same time-frequency resource, using the same modulation and coding mode and the same transmission mode.
3. The method according to claim 1, wherein the broadcast information further comprises reference signal resource information of the plurality of cells;

   The selecting, by the terminal device, the first cell from the multiple cells, includes:

   The terminal device measures, according to reference signal resource information of the multiple cells, signal quality of the multiple cells;

   The terminal device selects a first cell with the best signal quality from the plurality of cells.
4. The method according to claim 1, wherein the broadcast information further comprises control channel resource information of the plurality of cells;

   After the terminal device accesses the first cell, the method further includes:

   The terminal device acquires control information of the first cell according to control channel resource information of the first cell.
5. The method according to claim 1, wherein the broadcast information further comprises a transmission power of a reference signal of the plurality of cells and/or interference ratio noise IoT information of the plurality of cells;

   After the terminal device accesses the first cell, the method further includes:

   The terminal device adjusts an uplink transmit power according to a transmit power of a reference signal of the multiple cells and/or IoT information of the multiple cells.
6. The method according to claim 1, wherein the broadcast information further comprises data channel resource information of the plurality of cells;

   After the terminal device accesses the first cell, the method further includes:

   The terminal device transmits data by using the data channel resource of the first cell according to the data channel resource information of the first cell.
7. The method according to any one of claims 1 to 6, wherein the receiving, by the terminal device, the broadcast information comprises:

   The terminal device detects the synchronization signal of the first network access device, and determines the first time according to the positional relationship between the time-frequency resource of the synchronization signal of the first network access device and the first time-frequency resource. a frequency resource; the first network access device is any one of network access devices to which the multiple cells belong;

   The terminal device receives the broadcast information on the first time-frequency resource.
8. The method according to any one of claims 1 to 6, wherein the receiving, by the terminal device, the broadcast information comprises:

   The terminal device receives the indication information that is sent by the second cell, where the indication information is used to indicate the first time-frequency resource, and the second cell is the that the terminal device accesses before accessing the first cell. Any one of a plurality of cells;

   The terminal device receives the broadcast information on the first time-frequency resource.
9. A communication method, characterized in that the method comprises:

   The first network access device generates broadcast information; the broadcast information includes random access resource information of multiple cells;

   The first network access device sends the broadcast information.
10. The method according to claim 9, wherein the generating, by the first network access device, broadcast information comprises:

    Receiving, by the first network access device, the first message sent by the network access device except the first network access device, respectively, of the at least one network access device of the network access device to which the multiple cells belong The first message sent by any one of the other network access devices includes random access resource information of a cell covered by the any network access device;

    The first network access device generates the broadcast information according to the first message respectively sent by the other network access devices.
11. The method according to claim 10, wherein the first message sent by any one of the other network access devices may further include any one or any combination of the following:

    Reference signal resource information of a cell covered by any network access device; control channel resource information of a cell covered by any one of the network access devices; and data channel resource information of a cell covered by the any network access device The transmit power of the cell covered by any of the network access devices; the IoT information of the cell covered by the any network access device.
12. The method according to any one of claims 9 to 11, wherein the transmitting, by the first network access device, the broadcast information comprises:

    The first network access device sends the broadcast information on the first time-frequency resource, and the first time-frequency resource is determined by the network access device to which the multiple cells belong.
13. A terminal, wherein the terminal comprises:

    a transceiver module, configured to receive broadcast information, where the broadcast information includes random access resource information of the multiple cells;

    And a processing module, configured to select a first cell from the multiple cells, and access the first cell according to the random access resource information of the first cell.
14. The terminal according to claim 13, wherein the transceiver module is specifically configured to:

    Receiving the broadcast information sent by the first network access device, where the first network access device is any one of the network access devices to which the multiple cells belong; or

    Receiving, by the network access device to which the multiple cells belong, the same modulation and coding mode and the broadcast information transmitted by the same transmission mode on the same time-frequency resource.
15. The terminal according to claim 13, wherein the broadcast information further includes reference signal resource information of the plurality of cells;

    The processing module is specifically configured to:

    And measuring, according to reference signal resource information of the multiple cells, signal quality of the multiple cells;

    A first cell with the best signal quality is selected from the plurality of cells.
16. The terminal according to claim 13, wherein the broadcast information further includes the plurality of cells Control channel resource information;

    The transceiver module is further configured to:

    Obtaining control information of the first cell according to the control channel resource information of the first cell.
17. The terminal according to claim 13, wherein the broadcast information further includes a transmission power of a reference signal of the plurality of cells and/or interference ratio noise IoT information of the plurality of cells;

    The processing module is further configured to:

    Adjusting the uplink transmission power according to the transmission power of the reference signals of the plurality of cells and/or the IoT information of the plurality of cells.
18. The terminal according to claim 13, wherein the broadcast information further includes data channel resource information of the plurality of cells;

    The processing module is further configured to:

    And transmitting data according to the data channel resource information of the first cell by using the data channel resource of the first cell.
19. The terminal according to any one of claims 13 to 18, wherein the processing module is specifically configured to:

    Detecting the synchronization signal of the first network access device, and determining the first time-frequency resource according to the positional relationship between the time-frequency resource of the synchronization signal of the first network access device and the first time-frequency resource ;

    The transceiver module is specifically configured to:

    Receiving the broadcast information on the first time-frequency resource.
20. The terminal according to any one of claims 13 to 18, wherein the transceiver module is specifically configured to:

    Receiving indication information sent by the second cell, where the indication information is used to indicate the first time-frequency resource; the second cell is in the multiple cells that are accessed by the terminal device before accessing the first cell Any cell;

    Receiving the broadcast information on the first time-frequency resource.
21. A network access device, where the network access device includes:

    a processing module, configured to generate broadcast information, where the broadcast information includes random access resource information of the multiple cells;

    And a transceiver module, configured to send the broadcast information.
22. The network access device according to claim 21, wherein the transceiver module is specifically configured to:

    Receiving, by the network access device of the network access device to which the multiple cells belong, a first message sent by a network access device other than the first network access device; the other network access device The first message sent by any one of the network access devices includes random access resource information of a cell covered by the any network access device;

    The processing module is specifically configured to:

    Generating the broadcast information according to the first message respectively sent by the other network access devices.
23. The network access device according to claim 21, wherein the first message sent by any one of the other network access devices may further include any one or any combination of the following:

    Reference signal resource information of a cell covered by any network access device; control channel resource information of a cell covered by any one of the network access devices; and data channel resource information of a cell covered by the any network access device The transmit power of the cell covered by any of the network access devices; the IoT information of the cell covered by the any network access device.
24. The network access device according to any one of claims 21 to 23, wherein the transceiver module The block is specifically used to:

    And transmitting the broadcast information on the first time-frequency resource, where the first time-frequency resource is negotiated and determined by the network access device to which the multiple cells belong.
25. A computer readable storage medium, characterized in that the storage medium stores instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1-12.

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