WO2018171123A1

WO2018171123A1 - Communication system and communication method for sharing of radio frequency antenna by multiple data modules

Info

Publication number: WO2018171123A1
Application number: PCT/CN2017/100142
Authority: WO
Inventors: 霍长凡; 周相鑫; 黄涛; 段旺旺; 王朝阳; 卢浩典; 王雯; 左登超; 卢存方
Original assignee: 中车青岛四方车辆研究所有限公司
Priority date: 2017-03-22
Filing date: 2017-09-01
Publication date: 2018-09-27
Also published as: CN106936450B; CN106936450A

Abstract

A communication system for sharing of a radio frequency antenna by multiple data modules. The communication system comprises external antennas, i.e. primary and secondary antennas, an external power divider, a switching switch, and N groups of power divider units. The power divider units comprise two antenna signal power dividers, and each group of power divider units corresponds to a group of communication units. The communication units comprise multiple communication modules, and each of the communication modules comprise a SIM card. The primary antenna is connected to an input terminal of the external power divider, and the secondary antenna is connected to the switching switch. In a communication method based on the above system, the number of antenna signal power dividers connected to an output terminal of the external power divider is adjusted according to the number of connected wireless communication units, so as to control a connection path between the switching switch and the communication units. The present application uses one external antenna, supports expansion of communication units and communication modules and can realize sharing of one external antenna by multiple data modules for communication.

Description

Multi-data module sharing radio frequency antenna communication system and communication method

Technical field

The present application belongs to the field of communication technologies, and relates to a multi-data module shared radio frequency antenna communication system and a communication method.

Background technique

In May 2015, China Railway Corporation issued the document No. 153 [2015], which issued the technical document “General Technical Requirements for Passenger Train Wireless LAN System and Installation and Wiring (Provisional)”, which was mentioned in the technical requirements. To the car wireless LAN must have Internet access, must support multiple operators 3G / LTE multi-module centralized uplink.

The current design of wireless data terminals of 3G/LTE technology basically adopts a technical solution of one antenna module (including one main antenna and one secondary antenna), and in some special scenarios, the number of external antennas is affected. Restrictions, such as the high-speed EMU central server Ethernet networking, because the space constraints, the roof antenna is only deployed one, and in order to increase the bandwidth and stability of the car wireless interconnection, the central server is required to support multiple operators at most. Multiple Subscriber Identification Module Cards work simultaneously (for example, 9 SIM cards of 3 operators work simultaneously), which requires support for a maximum of multiple wireless links with only one roof antenna. At the same time, for example, for the working conditions of 9 SIM cards of 3 operators, it is necessary to support 9 wireless links to work simultaneously, that is, a maximum of 9 wireless modules can be simultaneously operated through one roof antenna.

In the prior art, there is no solution for supporting multiple operators to simultaneously work with multiple SIM cards, and the above problem is solved by expanding the roof antenna and configuring a dedicated antenna for each carrier communication system.

Summary of the invention

The purpose of the present application is to provide a multi-data module shared radio frequency antenna communication system and communication method for the problem that the antenna and radio frequency multiplexing problem of multiple SIM card modules cannot be realized in the case that there is only one antenna at present. The system and method can realize wireless signal transmission and reception of a wireless module of a plurality of SIM cards using one antenna.

An embodiment of the present application provides a multi-data module shared radio frequency antenna communication system, including an external antenna, and specifically includes a main antenna and a sub-antenna, and further includes an external power splitter, a switch, and a N group. a power splitter unit, each set of power splitter units corresponding to a group of communication units; each set of power splitter units includes two antenna signal splitters, each set of communication units including a plurality of communication modules, each communication module including a SIM card;

The main antenna is connected to the external power splitter input, and the secondary antenna is connected to the switch. A pair of external antennas are simultaneously connected, but under normal operating conditions, the main antenna plays a primary communication role.

As a preferred implementation manner, the nth power split output end of the external power splitter is connected to the nth power splitter a combined input end of an antenna signal splitter, and the external splitter is connected to the N-1 set of splitter units; the nth output of the switch is connected to the nth set of splitter units Another combined input of the antenna signal splitter, the switch is connected to the N sets of splitter units.

As a preferred embodiment, the N ≥ 3.

As a preferred implementation manner, the number of output ends of each antenna signal splitter needs to be at least the same as the number of communication modules in each group of communication units, and the output ends are respectively connected to each of the corresponding wireless communication units.

As a preferred implementation manner, the communication system includes two sets of power splitter units and two sets of wireless communication units, and the external power splitter selects two power splitters, and the switch is a second switch.

As a preferred implementation manner, the external power splitter and the switch are respectively connected to two antenna signal splitters of the two power splitter units.

As a preferred implementation manner, the communication system includes three sets of power splitter units and three sets of wireless communication units, and the external power splitter selects two power splitters, and the switch is a three-select switch.

As a preferred implementation manner, the external power splitter is connected to a main antenna signal splitter corresponding to two sets of communication units, and the switch is connected to a sub-antenna signal splitter corresponding to the three groups of communication units.

As a preferred implementation manner, each group of wireless communication units includes three wireless communication modules, and the antenna signal power divider selects three power dividers.

Another embodiment of the present application provides a communication method for sharing a radio frequency antenna with a multi-data module. The multi-data module can be used to share a radio frequency antenna communication system, and the external power divider can be adjusted according to the number m of the accessed wireless communication units. The output terminates the number of antenna signal splitters and controls the switching path of the switch and the communication unit.

When m=1, the external power splitter and the switch are respectively connected to two antenna signal splitters of the same group of splitter units.

When m=2, the external power splitter and the switch are respectively connected to the two antenna signal splitters of the two power splitter units.

When m≥3, the external power splitter is connected to the power splitter unit corresponding to the m-1 group communication unit, and the switcher is connected to the power splitter unit corresponding to the group of communication units not assigned the main antenna signal.

or,

When m=1, the external power splitter and the switch are respectively connected to two antenna signal splitters of the same group of splitter units, that is, the external power splitter is connected to the main antenna signal splitter, and the switch is connected to the sub-antenna Signal splitter.

When m=2, the external power splitter and the switch are respectively connected to two antenna signal splitters of the two power splitter units, that is, the external power splitter is connected to two main antenna signals of the two power splitter units. The power splitter, the switch is connected to two sub-antenna signal splitters of the two power splitter units.

When m≥3, the external power splitter is connected to the main antenna signal splitter corresponding to the m-1 group communication unit, and the switch is connected with the sub antenna signal splitter corresponding to the m group communication unit.

The beneficial effects of the application are:

(1) The present application provides a communication system in which a multi-data module shares a radio frequency antenna, and the system uses an external antenna to support a communication unit and a communication module through selection of an external power splitter, a switch, and an antenna splitter. The extension supports the expansion of the SIM card unit. Since different SIM cards support different carrier networks, multiple data modules can share a single external antenna communication. For example, in the case where three sets of communication units are provided, nine wireless uplink link field mirrors can be provided through one antenna, and nine SIM card accesses can be realized.

(2) The present application further provides a communication method for sharing a radio frequency antenna by a multi-data module, respectively accessing a main antenna signal and a sub-antenna signal through an external power splitter and a switch, respectively accessing different communication units, and switching through the switch The channel selection of the antenna signal is controlled, and based on this, an access of the multi-communication module is realized in the case of an external antenna, thereby increasing the bandwidth of the Internet access.

(3) The communication system and method can be used for design of a product having a wireless data terminal capability, such as a high-speed rail center server, a TD-LTE data terminal, and an FDD-LTE data terminal. By using this method, only one radio frequency antenna can be realized. In the case of radio frequency wireless signal aggregation supporting multiple wireless data modules.

DRAWINGS

Figure 1 is a schematic diagram 1 of a multi-data module shared radio frequency antenna communication system;

2 is a schematic diagram 2 of a multi-data module shared radio frequency antenna communication system;

Figure 3 is a schematic diagram 1 of a communication method;

Figure 4 is a schematic diagram 2 of the communication method;

Figure 5 is a schematic diagram 3 of the communication method;

Figure 6 is a schematic diagram 4 of the communication method;

Figure 7 is a schematic diagram 5 of the communication method;

Figure 8 is a schematic diagram 6 of the communication method;

Among them: 1 external antenna, 11 main antenna, 12 antennas, 2 external power splitter, 3 switch, 4 power splitter unit, 41 main antenna signal splitter, 42 antenna signal splitter, 5 communication unit, 501 communication module, 51, first group of wireless communication units, 52 second group of wireless communication units, 53 third group of wireless communication units, 6 SIM cards.

detailed description

The specific embodiments of the present application will be described clearly and fully in conjunction with the accompanying drawings. Obviously, the specific implementation The described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without creative efforts are within the scope of the present application.

In the description of the present application, it should be noted that the terms "main" and "sub" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present application provides a multi-data module shared radio frequency antenna communication system and communication method. By this method, a wireless module of multiple SIM cards can be used to transmit and receive wireless signals using one

antenna

11 and 12, thereby solving multiple operators. Multiple SIM cards share the problem of communication between one

antenna

11 and 12.

The multi-data module shared radio frequency antenna communication system includes an external antenna 1, and further includes an external power splitter 2, a changeover switch 3, an N-group splitter unit 4, and an N-group wireless communication unit 5, and each set of the splitter unit 4 is correspondingly set. Wireless communication unit 5. N is any positive integer.

The external antenna 1 includes an external main antenna 11 and an external sub-antenna 12; each of the power splitter units 4 includes two antenna signal splitters, and we define one of the main antenna signal splitters 41. The other is the sub-antenna signal splitter 42. This distinction is only distinguished from the flow direction of the antenna signal, and the functions of the two antenna signal splitters are not different; each set of wireless communication units 5 includes a plurality of wireless communication modules. 501. In this embodiment, the wireless communication module 501 adopts a 3G/LTE1 module (LTE is a Long Term Evolution), and each wireless communication module 501 includes a SIM card 6. Each wireless communication module 501 can support the same or different. Carrier network communication.

The main antenna 11 or the sub antenna 12 is connected to the external power splitter 2, and the external antenna not connected to the external power splitter 2 is connected to the changeover switch 3. That is, as needed, the external main antenna 11 may be selectively connected to the external splitter 2, and the sub antenna 12 signal (ie, the external antenna not connected to the external splitter 2) is connected to the changeover switch 3, or The external sub-antenna 12 signal is connected to the external splitter 2, and the main antenna 11 is signal-connected to the changeover switch 3. The embodiments in the present application are all described with the main antenna 11 connected to the external power splitter 2 and the secondary antenna 12 connected to the changeover switch 3 as an example for understanding by those skilled in the art, but are not limiting of the present application.

The nth power dividing output end of the external power splitter 2 is connected to a combined input end of an antenna signal power splitter (here, the main antenna signal power splitter 41) of the nth power splitter unit 4, And the external power splitter 2 is connected to the N-1 group power splitter unit 4 at most, forming a main antenna signal path; the nth output end of the switch 3 is connected to the other antenna work of the nth power splitter unit 4 The combined input of the splitter (here, the secondary antenna signal splitter 42) forms a secondary antenna signal path, and the switch 3 and the N sets of power splitter units 4 are connected. Where n is any positive integer.

In the signal receiving process, the external power splitter 2 functions to connect the main antenna signal to the wireless communication unit 5, along with It is then assigned to the corresponding SIM card; the function of the switch 3 is to select the turn-on path, connect the secondary antenna signal to the wireless communication unit 5, and assign it to the corresponding SIM card. During the signal transmission, the external power splitter 2 functions to transmit the signal of the wireless communication unit 5 via the main antenna 11. The function of the switch 3 is to select the turn-on path, and the signal of the communication unit 5 is sent through the sub-antenna 12. Since the external antenna 11 can be accepted and transmitted, it can be seen that the signal transmission is bidirectional, that is, the communication line is bidirectional.

As described above, one power splitter unit 4 corresponds to one wireless communication unit 5, and the output ends of the two

antenna signal splitters

41 and 42 in each power splitter unit 4 are respectively connected to each of its corresponding wireless communication units 5. The wireless communication module 501 specifically means that the power split signal output of one main antenna signal splitter 41 is respectively connected to each wireless communication module 501, and the power split signal output of one sub-antenna signal splitter 42 is also connected to each. The wireless communication module 501 is as shown in FIG.

The power split output signals of the

antenna signal splitters

41, 42 need to implement at least one output signal corresponding to one wireless communication module 501. Therefore, the selection of the primary antenna signal splitter 41 and the secondary antenna signal splitter 42 and the wireless communication module 501 For example, if each group of wireless communication units 5 includes two wireless communication modules 501, both the primary antenna signal splitter 41 and the secondary antenna signal splitter 42 can select a two-in-one splitter; The communication unit 5 includes three wireless communication modules 501, and both the primary antenna signal splitter 41 and the secondary antenna signal splitter 42 can select a three-in-one splitter.

In this way, multiple sets of wireless communication units 5 can be implemented, and multiple SIM cards share a set of peripheral antennas for data communication.

The multi-data module shares the radio frequency antenna communication method, and the multi-data module can be used to share the radio frequency antenna communication system. According to the number m, m of the accessed wireless communication unit 5 is any positive integer, the external power splitter 2 output terminal antenna is adjusted. The number of signal splitters controls the turn-on path of the switch 3 and the communication unit 5. It can be understood that when the communication unit corresponds to the previous group as N groups, m=N.

When m=1, the external power splitter 2 and the changeover switch 3 are respectively connected to the two

antenna signal splitters

41, 42 of the same set of splitter units 4.

That is, the external power splitter 2 is connected to the main antenna signal splitter 41, and the switch 3 is connected to the sub-antenna signal splitter 42; or because the main pair is not substantially different, the switch 3 is connected to the main antenna signal The divider 41 and the external power divider 2 are connected to the secondary antenna signal splitter 42. The set of connected communication units 5 operates in a dual antenna dual transmit and receive mode.

When m=2, the external power splitter 2 and the changeover switch 3 are respectively connected to the two

antenna signal splitters

41, 42 of the two sets of power splitter units 4.

That is, the external power splitter 2 is connected to the two main antenna signal splitters 41 of the two splitter units 4, and the switch 3 is connected to the two sub-antenna signal splitters 42 of the two splitter units 4.

When m≥3, the external power splitter 2 is connected to the power splitter unit corresponding to the m-1 group communication unit, the switch 3 and the unassigned master The power splitter unit 4 corresponding to a group of communication units 5 of the antenna signals is turned on.

That is, the external power splitter 2 is connected to the main antenna signal splitter 41 corresponding to the m-1 group communication unit 5, and the switch 3 is connected to the sub antenna signal splitter 42 corresponding to the m group communication unit 5.

The composition of the system and the principle of signal communication will be described below with two specific implementation structures in conjunction with the accompanying drawings.

Example 1

This embodiment illustrates the composition of the communication system by including two wireless communication units 5, each of which includes three wireless communication modules 501 as an example. Since each communication module 501 is connected to a SIM card, each group of communication units 5 corresponds to three SIM cards, which can respectively support the network communication systems commonly used in China, such as mobile, China Unicom and telecommunications. This structure can realize 6 SIM card sharing. A pair of external antennas 1.

As shown in FIG. 1, a pair of external antennas 1 (the main antenna 11 and the sub-antenna 12) are respectively connected to the external power splitter 2 and the changeover switch 3. In this implementation structure, the external power splitter 2 selects two power splitters. The switch 3 selects a switch of two choices, and the main antenna signal splitter 41 and the sub-antenna signal splitter 42 select three splitters. The output of the external power splitter 2 is connected to the main antenna signal splitter 41 corresponding to the first set of wireless communication units 51, wherein the output of the external splitter 2 can be selected to be connected to the second set of wireless communication units 52. The main antenna signal splitter 41 is connected to the sub antenna signal splitter 42 corresponding to the first group of wireless communication units 51 and the second group of wireless communication units 52. Thus, one or two main antenna signal communication lines and two sub-antenna signal paths are formed.

Based on the structure of the communication system, the communication method is as follows:

Send signal process:

As shown in FIG. 3, the main antenna signal splitter 41 and the sub-antenna signal splitter 42 corresponding to the first group of wireless communication units 51 respectively perform three-in-one combining signals of the three communication modules 501 to form a main antenna. Signal 101 and sub-antenna signal 201; similarly, the second group of wireless communication unit 52 forms a main antenna signal 102 and a sub-antenna signal 202;

As shown in FIG. 4, the main antenna signal 101 and the main antenna signal 102 are connected to a two-power external power splitter 2, and the main antenna signal 101 and the main antenna signal 102 are combined by the external power splitter 2 via the main antenna. 11 is sent; the secondary antenna signal 201 and the secondary antenna signal 202 are connected to an alternative switch 3; the secondary antenna signal splitter 42 corresponding to the first set of wireless communication units 51 is selected by switching the switch 3 to be turned on and off. Alternatively, the sub-antenna signal splitter 42 corresponding to the second group of wireless communication units 52 is connected, and the signals of the group of wireless communication units connected to the switch 3 are sent via the sub-antenna 12.

As shown in FIG. 5, when a group of wireless communication units 5 are selected for access, the external power splitter 2 is only connected to the primary antenna signal splitter 41 corresponding to the first group of wireless communication units 51; Switch 3 and first group of wireless communication units The corresponding sub-antenna signal splitter 42 is turned on, and at this time, the main 101 and sub 201 signals are output, and the accessed wireless communication unit 5 operates in the dual antenna dual transmission mode.

The process of receiving signals:

The signal receiving process is opposite to the process of transmitting a signal, and reference may be made to FIG. 4; details are not described herein again.

When two sets of wireless communication units 5 are selected for access, another implementation manner may also be selected. As shown in FIG. 6, the external power splitter 2 is connected to the primary antenna signal splitter 41 corresponding to the first group of wireless communication units 51. The primary antenna signal 101 is formed, and the switch antenna 3 and the secondary antenna signal splitter 42 corresponding to the second group of wireless communication units 52 are turned on. At this time, the main 101 and the secondary 202 signals are output, and two sets of wireless communication are accessed.

Units

51, 52 all operate in a single antenna single receive and transmit mode.

Example 2

This embodiment illustrates the composition of the communication system by including three wireless communication units 5, each of which includes three wireless communication modules 501 as an example.

As shown in FIG. 2, a pair of

external antennas

11, 12 are respectively connected to the external power splitter 2 and the changeover switch 3. In this implementation structure, the external power splitter 2 selects two power splitters, and the switch 3 selects three ones. The switch, the main antenna signal splitter 41 and the secondary antenna signal splitter 42 select three splitters. The output of the external power splitter 2 is connected to the primary antenna signal splitter 41 corresponding to the first group 51 and the second group of wireless communication units 52, and the switch 3 is connected to the first group of wireless communication units 51, the second group of wireless communications The unit 52 and the third group of wireless communication units 53 correspond to a sub-antenna signal splitter 42. Thus, two main antenna signal paths and three sub-antenna 12 signal paths are formed.

(1) A communication method when a group of wireless communication units is selected for access, refer to FIG. 3, FIG. 5, and FIG.

The main antenna signal is accessed by the external power splitter 2, and is divided into two, the main antenna signal 101 is transmitted to a group of wireless communication units 5, the switch 3 is connected to the sub-antenna signal 201, and the wireless communication unit 5 is also connected ( As shown in FIG. 5), the main antenna signal splitter 41 and the sub-antenna signal splitter 42 respectively perform a three-power split on the main antenna signal 101 and the sub-antenna signal 201, and are transmitted to three SIM cards.

The signal transmission process is the reverse of the above process and will not be described again.

When a group of wireless communication units is accessed, it operates in a dual antenna dual receive and transmit mode of operation. The advantage of working in this mode is that it increases the bandwidth and stability of the signal transmission.

(2) Select the communication method when two sets of wireless communication units are connected:

The signal access method is the same as above, and will not be described again. The difference is:

As an implementation manner, as shown in FIG. 6, when two sets of wireless communication units 5 are selected for access, the external power splitter 2 will be the main The antenna signal is connected to the main antenna signal splitter 41 corresponding to the wireless communication unit 5, and the corresponding switch 3 is connected to the sub-antenna signal splitter 42 corresponding to the other set of the wireless communication unit 5. At this time, a main output is output. The antenna signal and a secondary antenna signal, such as the primary 101 and secondary 202 signals, operate in two single antenna single receive and transmit modes.

(3) Select the communication method when three sets of wireless communication units are connected:

As shown in FIG. 8, when three sets of wireless communication units are selected for access, the external power splitter 2 connects the main antenna signals 101, 102 to the two main antenna signal splitters 41 corresponding to the two sets of

wireless communication units

51, 52, and switches. 3 is connected to the sub-antenna signal splitter 42 in the third group of wireless communication units 53. At this time, two main antenna signals and one sub-antenna signal are output, and the main 101, main 102 and sub 203 signals are connected. The three sets of wireless communication units 5 all operate in a single antenna single receive and transmit mode.

With this communication method, data communication in which one SIM card shares an external antenna can be realized.

In addition to the above implementation structure, other numbers of communication units can be designed according to the configuration requirements. Accordingly, the selection of the external power divider 2, the changeover switch 3, and the

antenna power splitters

41, 42 needs to be changed.

The selection of the switch 3 and the external power splitter 2 is related to the number of the communication unit 5, and the order of the switch 3 is the same as the number of the communication unit 5, for example, if four groups of communication units 5 are included, the switch 3 is switched. The four-selection switch is selected, and the external power splitter 2 selects a three-power splitter; at this time, the output end of the external power splitter 2 is connected with the main antenna signal splitter 41 corresponding to the three communication units 5 to form a main antenna signal path. The switch 3 is connected to the sub-antenna signal splitter 42 corresponding to the four communication units 5 to form a sub-antenna signal path.

The selection of the

antenna splitters

41, 42 is related to the number of communication modules 501 in the communication unit 5, and the number of power division channels of the antenna splitter is equal to the number of communication modules 501 in the communication unit.

Claims

The multi-data module shares a radio frequency antenna communication system, including an external antenna (1), and specifically includes a main antenna (11) and an antenna (12), and further includes an external power splitter (2) and a switch (3). ), N sets of power divider units (4);

Each set of power splitter units (4) includes two antenna signal splitters (41, 42);

Each set of power splitter units (4) corresponds to a group of communication units (5);

Each group of communication units (5) includes a plurality of communication modules (501);

Each communication module (501) includes a SIM card (6);

The main antenna (11) is connected to the input of the external power divider (2), and the secondary antenna (12) is connected to the changeover switch (3).
The multi-data module shared radio frequency antenna communication system according to claim 1, wherein each antenna signal splitter (41, 42) has a number of power split outputs at least with each communication unit (5) of the communication module ( The number of 501) is the same, and the power output terminals are respectively connected to each of the communication modules (501) of the corresponding wireless communication unit (5).
The multi-data module shared radio frequency antenna communication system according to claim 1 or 2, wherein the n-th power split output of the external power splitter (2) is connected to the n-th splitter unit (4) The combined input of one of the antenna signal splitters (41), and the external splitter (2) is connected to the N-1 set of splitter units (4); the nth of the switch (3) The output end is connected to the combined input end of the other antenna signal splitter (42) in the nth power splitter unit (4), and the switch (3) is connected to the N sets of power splitter units (4). The N is a positive integer.
The multi-data module shared radio frequency antenna communication system according to claim 3, wherein said N ≥ 3.
The multi-data module shared radio frequency antenna communication system according to claim 1 or 2, comprising: two sets of power splitter units (4) and two sets of wireless communication units (5), said external power splitter (2) The two-power splitter is selected, and the switch (3) is a two-select switch.
The multi-data module shared radio frequency antenna communication system according to claim 5, wherein the external power splitter (2) and the switch (3) are respectively connected to two antennas of the two power splitter units (4) Signal splitter (41, 42).
The multi-data module shared radio frequency antenna communication system according to claim 1, 2 or 4, characterized in that it comprises three sets of power splitter units (4) and three sets of wireless communication units (5), said external power splitter (2) Selecting a two-power splitter, the switch (3) is a three-select switch.
The multi-data module shared radio frequency antenna communication system according to claim 7, wherein the external power splitter (2) is connected to the main antenna signal splitter (41) corresponding to the two communication units (51, 52). , toggle switch (3) and The sub-antenna signal splitters corresponding to the three groups of communication units (51, 52, 53) are connected (42).
The multi-data module shared radio frequency antenna communication system according to claim 1 or 2, wherein each set of wireless communication units (5) comprises three wireless communication modules (501), and said antenna signal splitter (41, 42) Select the three-power splitter.
A multi-data module sharing radio frequency antenna communication method, using the multi-data module shared radio frequency antenna communication system according to any one of claims 1-9, characterized in that, according to the number m of the accessed wireless communication units (5), Adjusting the number of output of the external power splitter (2) to the antenna signal splitter (41), and controlling the turn-on path of the switch (3) and the communication unit (5).
A communication method for sharing a radio frequency antenna with a data module according to claim 10, wherein:

When m=1, the external power splitter (2) and the switch (3) are respectively connected to two antenna signal splitters (41, 42) of the same group of splitter units (4);

When m=2, the external power splitter (2) and the switch (3) are respectively connected to two antenna signal splitters (41, 42) of the two power splitter units (4);

When m≥3, the external power splitter (4) is connected to the power splitter unit (4) corresponding to the m-1 group communication unit (5), the switch (3) and a group of communication units not assigned the main antenna signal ( 5) The corresponding power splitter unit (4) is turned on.
A communication method for sharing a radio frequency antenna with a data module according to claim 10, wherein:

When m=1, the external power splitter (2) and the switch (3) are respectively connected to two antenna signal splitters (41, 42) of the same set of splitter units (4), that is, the external power split The device (2) is connected to the main antenna signal splitter (41), and the switch (3) is connected to the sub-antenna signal splitter (42);

When m=2, the external power splitter (2) and the switch (3) are respectively connected to two antenna signal splitters (41, 42) of the two power splitter units (4), that is, the external power split The device (2) is connected to two main antenna signal splitters (41) of the two power splitter units (4), and the switch (3) is connected to the two sub-antenna signals of the two power splitter units (4) (42);

When m≥3, the external power splitter (2) is connected to the main antenna signal splitter (41) corresponding to the m-1 group communication unit (5), and the switch (3) corresponds to the m group communication unit (5). The secondary antenna signal splitter (42) is connected.