WO2020113955A1

WO2020113955A1 - Communication method and related device

Info

Publication number: WO2020113955A1
Application number: PCT/CN2019/094966
Authority: WO
Inventors: 张伟; 谢汉雄; 李华驿
Original assignee: 海能达通信股份有限公司
Priority date: 2018-12-07
Filing date: 2019-07-08
Publication date: 2020-06-11
Also published as: CN111294979B; CN111294979A

Abstract

Provided is a communication method. The method is applied to a base station server. In the method, the base station server can receive a call request sent by a first terminal and regarding a second terminal, wherein the call request includes an identifier of the second terminal in a broadband system and/or an identifier in a narrowband system; after receiving the call request, the base station server determines whether the second terminal uses a broadband system or a narrowband system; after a communication system is determined, the base station server can use the system identifier of the second terminal to establish communication with the second terminal in the communication system, so as to realize communication between the first terminal and the second terminal. Since the first terminal and the second terminal can work in either of the two systems, the method can realize cross-system communication between the two terminals. Moreover, further provided in the present application are a communication apparatus and a storage medium for ensuring the practical application and implementation of the method.

Description

Communication method and related equipment

This application requires the priority of the Chinese patent application filed on December 07, 2018 in the Chinese Patent Office with the application number 201811495809.0 and the invention titled "Communication Method and Related Equipment", the entire contents of which are incorporated by reference in this application.

Technical field

This application relates to the field of communication technology, and more specifically, to communication methods and related equipment.

Background technique

Current communication technologies include broadband transmission and narrowband transmission. The two communication technologies use different communication parameters, application scenarios, and data transmission capabilities. For example, narrow-band private networks are mainly used to complete voice trunking communication, with limited data transmission capabilities, while broadband communication has higher data transmission capabilities.

Terminals may have one or both of broadband communication capabilities or narrowband communication capabilities. Currently, if two terminals use different communication technologies, they cannot be interconnected.

Summary of the invention

In view of this, the present application provides a communication method to solve the technical problem that two existing terminals use different communication technologies and cannot communicate with each other. In addition, the present application also provides a communication device to ensure the practical application and implementation of the method.

To achieve the stated purpose, the technical solutions provided by this application are as follows:

In the first aspect, the present application provides a communication method, including:

Receiving a call request sent by a first terminal to a second terminal, where the call request includes a system identifier of the second terminal, and the system identifier is an identifier of the second terminal in a broadband system and/or a narrowband system Logo in

Determine the target communication system used by the second terminal according to the call request, where the communication system is a broadband system or a narrowband system;

Use the system identification of the second terminal to establish communication with the second terminal in the target communication system.

In a second aspect, the present application provides a communication device, including:

A call request receiving unit, configured to receive a call request sent by a first terminal to a second terminal, where the call request includes a system identifier of the second terminal, and the system identifier is that the second terminal is in a broadband system Identification and/or identification in narrowband systems;

A communication system determining unit, configured to determine the target communication system used by the second terminal according to the call request, wherein the communication system is a broadband system or a narrowband system;

The communication establishment unit is configured to use the system identification of the second terminal to establish communication with the second terminal in the target communication system.

In a third aspect, the present application provides a base station server, including:

The communication interface is used to receive a call request sent by the first terminal to the second terminal, where the call request includes the system identifier of the second terminal, and the system identifier is the identifier of the second terminal in the broadband system And/or identification in narrowband systems;

A processor, configured to determine a target communication system used by the second terminal according to the call request, wherein the communication system is a broadband system or a narrowband system; and use the system identification of the second terminal, in the Establish communication with the second terminal in the target communication system.

According to a fourth aspect, the present application provides a storage medium on which a computer program is stored, and when the computer program is executed by a processor, the above call method is implemented.

It can be seen from the above technical solutions that the present application provides a communication method, which is applied to a base station server. The base station server can receive a call request sent by a first terminal to a second terminal. The call request includes the second terminal in The identifier in the broadband system and/or the identifier in the narrowband system. After receiving the call request, the base station server determines whether the second terminal uses the broadband system or the narrowband system. After determining the communication system, the base station server can use the system identifier of the second terminal The communication with the second terminal is established in the communication system, so as to realize the communication between the first terminal and the second terminal. Since the first terminal and the second terminal may work in any one of the two systems, the method can realize cross-system communication of the two terminals.

BRIEF DESCRIPTION

In order to more clearly explain the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only This is an embodiment of the present application. For those of ordinary skill in the art, without paying any creative work, other drawings may be obtained according to the provided drawings.

FIG. 1 is a schematic flowchart of a communication method provided by this application;

2 is a schematic diagram of a scenario of a communication method applied on a base station server provided by this application;

FIG. 3 is another schematic flowchart of a communication method provided by this application;

4A and 4B are schematic diagrams of two scenarios for establishing a system identity mapping relationship provided by this application;

FIG. 5 is another schematic flowchart of the communication method provided by the present application;

6 is a schematic structural diagram of a communication device provided by this application;

7 is a schematic structural diagram of a base station server provided by this application.

detailed description

The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

The communication method provided in this application is applied on the base station side, for example, on the base station server. The base station server needs to be pre-deployed, and the communication modules required by the broadband and narrowband communication technologies are deployed on the base station server, so that the base station server has two communication capabilities of broadband communication and narrowband communication.

See FIG. 1, which shows a schematic flowchart of a communication method provided by the present application. As shown in FIG. 1, the communication method specifically includes S101 to S103.

S101: Receive a call request sent by the first terminal to the second terminal, where the call request includes the system identifier of the second terminal, and the system identifier is the identifier of the second terminal in the broadband system and/or the identifier in the narrowband system.

Among them, the "first" in the first terminal and the "second" in the second terminal do not represent the order, just to distinguish the two. The first terminal and the second terminal may be any terminals with broadband and/or narrowband communication capabilities. It should be noted that the broadband communication technology in this application may include but is not limited to Long Term Evolution (LTE) technology, and the narrowband communication technology may include but not limited to Digital Mobile Radio (DMR) , Trans-European Trunked Radio (TETRA), etc.

The first terminal may include a contactable user list, and the contactable user list includes a user identification, and the user identification has a corresponding relationship with the terminal system identification. Assuming that the contactable user list contains the user identification of the second terminal, the user of the first terminal can select the user identification of the second terminal in the contactable user list, and the first terminal obtains the user identification of the second terminal in response to the selection operation. Corresponding system identification, and include the system identification in the call request.

The first terminal sends a call request to the second terminal through the base station server, and the base station server can receive the call request sent by the first terminal. The second terminal has a system identifier registered in the broadband system and/or narrowband system, and the call request sent by the first terminal to the second terminal includes the system identifier.

The system ID is unique. This uniqueness can be associated with the system, that is, the system identification of the second terminal in the broadband system or the narrowband system is unique; or the system identification is globally unique in both the narrowband system and the broadband system. The system identification may include two parts. The first part is the device identification of the second terminal, and the second part is the unique random number. Of course, the structure of the system identification may be other, and this application does not specifically limit it.

S102: Determine a target communication system used by the second terminal according to the call request, where the communication system is a broadband system or a narrowband system.

After receiving the call request, the base station server needs to first determine the communication system used by the second terminal. The second terminal may work in a broadband system or a narrowband system, so the determined communication system is a broadband system or a narrowband system.

The identification of the second terminal under the broadband system and/or narrowband system can be obtained from the call request, and the communication system confirming the existence of the information about the second terminal in the two systems according to the identification, thereby determining the communication used by the second terminal system. For ease of description, the communication system may be referred to as a target communication system.

It should be noted that the specific confirmation method is related to the type of call request. There are two types of call requests. One is that the call request contains the identification of the second terminal in one system, and the other is that the call request contains the identification of the second terminal in two systems. The type of call request is determined by the first terminal. In actual applications, if the first terminal does not record the identification of the second terminal in the two systems, the call request sent is the first type On the contrary, if the identification of the second terminal in the two systems is recorded in the first terminal, the call request sent is of the second type. The following specifically describes how to determine the communication system used by the second system according to the call request, and details are not described here.

S103: Use the system identifier of the second terminal to establish communication with the second terminal in the target communication system.

After determining the communication system used by the second terminal, establish communication with the second terminal in the communication system, specifically establish a communication channel with the terminal pointed to by the system identifier of the second terminal in the communication system, and then the second The terminal can communicate with the first terminal through the base station server.

It can be seen from the above technical solution that the present application provides a communication method. As shown in FIG. 2, the method is applied to a base station server. The base station server can receive a call request sent by a first terminal to a second terminal. The call request includes There is an identifier of the second terminal in the broadband system and/or an identifier in the narrowband system. After receiving the call request, the base station server determines whether the second terminal uses the broadband system or the narrowband system. After determining the communication system, the base station server can use the first terminal. The system identifier of the second terminal establishes communication with the second terminal in the communication system, thereby achieving communication between the first terminal and the second terminal. Since the first terminal and the second terminal may work in any one of the two systems, the method can realize cross-system communication of the two terminals.

As mentioned above, the base station server can determine the communication system used by the second terminal according to whether the call request includes the identification of the second terminal in the two systems. The determination process is specifically described below.

See FIG. 3, which shows another schematic flowchart of the communication method provided by the present application. As shown in FIG. 3, the method flow includes the following steps S301 to S304.

S301: The first terminal sends a call request to the second terminal to the base station server. The call request includes the identifier of the second terminal in the broadband system or the identifier in the narrowband system.

In this communication method, the first terminal does not record the identification of the second terminal in both the broadband system and the narrowband system, so the call request includes the identification of the second terminal in one system.

Specifically, a list of contactable users is stored on the first terminal, and the list includes a user identification corresponding to the second terminal, and the user of the first terminal may select the user identification to make a call. The first terminal stores the correspondence between the user ID and the broadband system ID or the narrowband system ID. In response to the selection operation, the first terminal obtains the broadband system ID or the narrowband system ID corresponding to the user ID corresponding to the second terminal, The obtained broadband system identification or narrowband system identification is encapsulated in the call request.

S302: The base station server searches for the recorded communication system used by the second terminal in the terminal work information table, and uses the found communication system as the target communication system.

Among them, the base station server can maintain the terminal work information table, which records the work information of each terminal, which contains the communication system in which the terminal works. Specifically, the terminal may report its work information to the base station server, so that the base station server records in the work information table of the terminal.

After the base station server receives the call request sent by the first terminal, the base station server looks up the work information of the second terminal in the work information table of the terminal to obtain the communication terminal recorded in the work information, which is the communication used by the second terminal to work system. For ease of description, the communication system may be referred to as a target communication system.

S303: If the system identification is the identification of the second terminal in the broadband system, the base station server determines the identification of the second terminal in the narrow-band system in the identification mapping table, and uses the identification in the narrow-band system to establish a link with the target communication system. Second terminal communication.

S304: If the system identifier is the identifier of the second terminal in the narrow-band system, the base station server determines the identifier of the second terminal in the broadband system in the identifier mapping table, and uses the identifier in the broadband system to establish and Second terminal communication.

It should be noted that, in the present communication method, an identification mapping table is stored on the base station server, and the mapping relationship between the identification of the terminal in the broadband system and the identification in the narrowband system is recorded in the table. The call request includes the identifier of the second terminal in a certain communication system, and the base station server may search for an identifier in another communication system that has a mapping relationship with the identifier in the certain communication system in the identifier mapping table. After finding the mapped identifier, a communication channel can be established in the target communication system with the second terminal corresponding to the identifier, and the communication between the first terminal and the second terminal can be implemented through the base station server.

It can be seen from the above technical solution that in the communication method proposed by this method, the base station server maintains the mapping relationship between the identifiers in the two systems, and the base station server can receive the call request from the first terminal to the second terminal. Only the identification of the second terminal in one system is included, and the base station server can search for the identification in the other system corresponding to the second terminal in the mapping relationship, so that the identification can be used to initiate communication to the second terminal.

As mentioned above, the base station server stores the identity mapping table, and the method for establishing the identity mapping relationship in the table may include the following implementation methods.

In one implementation, the base station server can be configured according to configuration instructions. Specifically, as shown in FIG. 4A, a configuration instruction may be input to the base station server, and the configuration instruction includes the broadband system identifier and the narrowband system identifier allocated to each terminal. The base station server obtains the broadband system identification and the narrowband system identification allocated to the terminal, and establishes a mapping relationship between the broadband system identification and the narrowband system identification in the identification mapping table. In this implementation, the base station server uniformly configures the terminal ID mapping relationship.

In another implementation manner, the base station server may receive the registration request reported by the terminal, and establish a mapping relationship according to the registration request. Specifically, as shown in FIG. 4B, the terminal may register its own information with the base station server, which includes the identification of the terminal in the two systems. The base station server receives the registration request including the broadband system identifier and the narrowband system identifier sent by the terminal, and establishes a mapping relationship between the broadband system identifier and the narrowband system identifier in the registration request in the identifier mapping table.

It should be noted that the case where the terminal sends the registration request to the base station server may include but is not limited to the following two. One is that the terminal may pre-store the default system identification assigned to it by the base station server, but the terminal may modify the system identification and register the modified system identification with the base station server. In this case, after receiving the registration request from the base station server, it can first find out whether there is an identity mapping relationship of the terminal in the identity mapping table, if it exists, delete the existing identity mapping relationship and establish its registration request The mapping relationship between the logos. Based on this implementation, the base station server can synchronously update the system identification of the terminal in real time. The other is that the terminal does not store the system identifier assigned to it by the base station server. The system identifier of the terminal is set on the terminal, and then the terminal registers the system identifier with the base station server.

The establishment of the above two identity mapping relationships can be applied to the base station server to establish the identity mapping relationship.

However, the above communication method may have the following problems: First, the base station server needs to maintain the mapping relationship table between the terminal identifiers in the two systems. Usually, the number of terminals is large, and the base station server's maintenance and table lookup work is time-consuming, so communication It takes a long time to establish, which results in a long delay in the call request sent by the first terminal to the second terminal, and the user experience is relatively poor; second, the establishment of the communication process is more dependent on the base station server. If the base station server fails, it will affect All terminals that rely on it to establish communication have a large impact.

In order to solve the above problems, the present application provides another communication method. As shown in FIG. 5, the communication method may specifically include the following steps S501 to S504.

S501: The first terminal sends a call request to the second terminal to the base station server. The call request includes the identifier of the second terminal in the broadband system and the identifier in the narrowband system.

Among them, in the present communication method, the first terminal may be a dual-mode terminal on which the identification of the second terminal in the two systems is stored, so the generated call request contains the identification of the second terminal in the two systems .

Specifically, a list of contactable users is stored on the first terminal, and the list contains the user identification corresponding to the second terminal, and the user of the first terminal can select the user identification to make a call. The first terminal stores the correspondence between the user ID and the broadband system ID and the narrowband system ID. In response to the selection operation, the first terminal obtains the broadband system ID and the narrowband system ID corresponding to the user ID corresponding to the second terminal, The obtained broadband system identification and narrowband system identification are encapsulated in the call request.

It should be noted that the first terminal may download the broadband system identification and the narrowband system identification corresponding to the contact user from the base station server in advance, and store it locally in the first terminal. Specifically, the first terminal may send a mapping relationship acquisition request to the base station server. After receiving the request, the base station server obtains the contact terminal of the first terminal. The contact terminal refers to the terminal corresponding to the user. The contact terminal may include the second terminal. . After obtaining the contact terminal, the base station server sends the mapping relationship between the broadband system identifier and the narrowband system identifier of the contact terminal to the first terminal. In this way, only the identifications of the users with whom the first terminal has contact are stored, rather than the identification correspondences of all the terminals in the entire system.

S502: The base station server uses the identifier in the narrowband system to forward the call request to the second terminal in the narrowband communication system.

It should be noted that, because the call setup process of the narrowband system is shorter than that of the broadband system, and usually is shorter than the table lookup process of the base station server, in order to improve the efficiency of communication establishment, this communication method first As a target communication system, the narrowband system forwards the call request in the narrowband system.

S503: If the response of the second terminal to the call request is received within a preset time length, the base station server uses the identification of the second terminal in the narrowband system to establish communication with the second terminal in the target communication system.

Among them, if the response of the second terminal to the call request is received within the preset time length, it means that the second terminal is more likely to work in the narrowband system, so the narrowband system is determined as the target communication system, and the second terminal is used to The identification in the narrowband system establishes communication.

S504: If the second terminal's response to the call request is not received within the preset length of time, the base station server uses the identification of the second terminal in the broadband system to establish communication with the second terminal in the target communication system.

Among them, if the second terminal does not receive a response to the call request within a preset length of time, it means that the second terminal is more likely to work in the broadband system, so the broadband system is determined as the target communication system, and the second terminal is used The identification in the broadband system establishes communication.

It should be noted that the base station server may preset a time length, which is generally an average response time of a narrow band.

It can be seen from the above technical solution that in this communication method, the terminal locally stores the mapping relationship between the two identifiers of other contact terminals, so that when sending the call request, the two identifiers can be carried. After receiving the call request, the base station server first uses the The narrowband system identification attempts to establish communication. If successful, the communication has been established. If not, the broadband system identification is used to establish communication. Since the base station server does not need to search in the identification mapping table, and the narrow-band system takes less time to establish communication, this communication method can improve the efficiency of communication establishment to a certain extent, and avoid dependence on the base station server for table look-up and improve The communication autonomous capability of the terminal is improved.

The base station server can assign a system identifier to the terminal. Specifically, the base station server may divide the area in advance, and allocate the mapping relationship between the broadband system ID and the narrowband system ID to the area. If the base station server detects that a terminal enters a certain area, the terminal is assigned a broadband system ID within the area And narrowband system identification. For convenience of description, a certain terminal may be referred to as a third terminal, and the third terminal may be any terminal. In addition, a certain area may be referred to as a target area.

If it is detected that the third terminal enters the target area, the third terminal may be assigned a broadband system identifier and a narrowband system identifier according to a preset allocation strategy; and the assigned broadband system identifier and narrowband system identifier are sent to the third terminal.

Specifically, the allocation strategy may be to arbitrarily select an unoccupied system ID among the system IDs allocated to the area to allocate to the third terminal, or may select a system ID among the used historical system IDs to allocate to the third terminal , Or it could be something else.

See FIG. 6, which shows a structure of a communication device provided by the present application. As shown in FIG. 6, the communication device may specifically include: a call request receiving unit 601, a communication system determination unit 602, and a communication establishment unit 603.

The call request receiving unit 601 is used to receive the call request sent by the first terminal to the second terminal, and the call request includes the system identifier of the second terminal, and the system identifier is the identifier of the second terminal in the broadband system and/or the narrowband system Logo in

The communication system determining unit 602 is used to determine the target communication system used by the second terminal according to the call request, where the communication system is a broadband system or a narrowband system;

The communication establishment unit 603 is configured to use the system identification of the second terminal to establish communication with the second terminal in the target communication system.

In one implementation, the communication system determination unit includes: a first communication system determination subunit.

The first communication system determining subunit is used to search for the recorded communication used by the second terminal in the terminal work information table if the call request includes the second terminal's identification in the broadband system or the identification in the narrowband system The system uses the found communication system as the target communication system.

In one implementation, the communication establishment unit includes: a first communication establishment subunit.

The first communication establishment subunit is used to determine the identification of the second terminal in the narrowband system in the identification mapping table if the system identification is the identification of the second terminal in the broadband system, and use the identification in the narrowband system at the target Establish communication with the second terminal in the communication system; if the system identification is the identification of the second terminal in the narrowband system, determine the identification of the second terminal in the broadband system in the identification mapping table and use the identification in the broadband system Establish communication with the second terminal in the target communication system.

In one implementation, the communication device further includes: an identity mapping relationship establishment unit.

The identification mapping relationship establishment unit is used to establish the identification mapping relationship in the identification mapping table;

Wherein, the identity mapping relationship establishment unit includes: an identity mapping relationship establishment subunit.

The identification mapping relationship establishment subunit is used to obtain the broadband system identification and the narrowband system identification assigned to the terminal, and establish a mapping relationship between the broadband system identification and the narrowband system identification in the identification mapping table; and/or, receive the The registration request including the broadband system identification and the narrowband system identification, and the mapping relationship between the broadband system identification and the narrowband system identification in the registration request is established in the identification mapping table.

In one implementation, the communication system determination unit includes: a narrowband communication attempt subunit and a communication system determination subunit.

The narrowband communication attempt subunit is used to forward the call request to the second terminal in the target communication system using the identification in the narrowband system if the call request includes the identification of the second terminal in the broadband system and the identification in the narrowband system;

The communication system determining subunit is used to determine that the narrowband system is the target communication system if the response of the second terminal to the call request is received within the preset time length; if the second terminal does not receive the call within the preset time length In response to the request, the broadband system is determined to be the target communication system.

In one implementation, the communication establishment unit includes: a second communication establishment subunit.

The second communication establishment subunit is used to establish the communication with the second terminal in the target communication system using the identification of the second terminal in the broadband system if the target communication system is a broadband system; if the target communication system is a narrowband system, Then, the identification of the second terminal in the narrowband system is used to establish communication with the second terminal in the target communication system.

In one implementation, the communication device further includes: a system identification delivery unit.

The system identifier issuing unit is used to obtain the contact terminal of the first terminal, and the contact terminal includes the second terminal; and send the mapping relationship between the broadband system identifier and the narrowband system identifier of the contact terminal to the first terminal.

In one implementation, the communication device further includes: a system identification allocation unit.

The system identification allocation unit is configured to allocate a broadband system identification and a narrowband system identification to the third terminal according to a preset allocation strategy if it is detected that the third terminal enters the target area; and send the allocated broadband system identification and narrowband system identification to the The third terminal.

See FIG. 7, which shows a structure of a base station server provided by the present application. As shown in FIG. 7, the base station server may specifically include: a processor 701, a memory 702, and a communication interface 703 that communicate with each other through a communication bus 704.

The processor 701 is configured to execute a program. The program may include a program code, and the program code includes an operation instruction of the processor. Among them, the program can be specifically used for:

According to the call request, determine the target communication system used by the second terminal, where the communication system is a broadband system or a narrowband system; and use the system identification of the second terminal to establish communication with the second terminal in the target communication system.

The memory 702 is used to store programs.

The communication interface 703 is used to receive a call request sent by the first terminal to the second terminal. The call request includes the system identifier of the second terminal, and the system identifier is the identifier of the second terminal in the broadband system and/or the narrowband system Logo.

In addition, the present application also provides a storage medium on which a computer program is stored, which is characterized in that, when the computer program is executed by a processor, any one of the above call methods is implemented.

It should be noted that the embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments refer to each other. can.

It should also be noted that in this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities or operations There is any such actual relationship or order. Moreover, the terms "include", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also those not explicitly listed Or other elements that are inherent to this process, method, article, or equipment. Without more restrictions, the element defined by the sentence "include one..." does not exclude that there are other identical elements in the process, method, article or equipment that includes the above elements.

The above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features disclosed in this document.

Claims

A communication method, characterized in that it includes:

Receiving a call request sent by a first terminal to a second terminal, where the call request includes a system identifier of the second terminal, and the system identifier is an identifier of the second terminal in a broadband system and/or a narrowband system Logo in

Determine the target communication system used by the second terminal according to the call request, where the communication system is a broadband system or a narrowband system;

Use the system identification of the second terminal to establish communication with the second terminal in the target communication system.
The communication method according to claim 1, wherein the determining the target communication system used by the second terminal according to the call request includes:

If the call request includes the identification of the second terminal in the broadband system or the identification in the narrowband system, then search the recorded communication system used by the second terminal in the terminal work information table to find the communication system As the target communication system.
The communication method according to claim 2, wherein the establishment of communication with the second terminal in the target communication system using the system identification of the second terminal includes:

If the system identifier is the identifier of the second terminal in the broadband system, in the identifier mapping table, determine the identifier of the second terminal in the narrowband system, and use the identifier in the narrowband system to communicate at the target Establishing communication with the second terminal in the system;

If the system identifier is the identifier of the second terminal in the narrowband system, then in the identifier mapping table, determine the identifier of the second terminal in the broadband system, and use the identifier in the broadband system to communicate at the target Establish communication with the second terminal in the system.
The communication method according to claim 3, wherein the method for establishing the identity mapping relationship in the identity mapping table includes:

Obtain the broadband system identification and the narrowband system identification assigned to the terminal, and establish a mapping relationship between the broadband system identification and the narrowband system identification in an identification mapping table;

and / or,

Receiving a registration request including the broadband system identifier and the narrowband system identifier sent by the terminal, and establishing a mapping relationship between the broadband system identifier and the narrowband system identifier in the registration request in the identifier mapping table.
The communication method according to claim 1, wherein the determining the target communication system used by the second terminal according to the call request includes:

If the call request includes the identification of the second terminal in the broadband system and the identification in the narrowband system, the identification in the narrowband system is used to forward the call to the second terminal in the target communication system request;

If a response from the second terminal to the call request is received within a preset time length, it is determined that the narrowband system is the target communication system;

If no response from the second terminal to the call request is received within a preset time length, the broadband system is determined to be the target communication system.
The communication method according to claim 5, wherein the establishment of communication with the second terminal in the target communication system using the system identification of the second terminal includes:

If the target communication system is a broadband system, use the identification of the second terminal in the broadband system to establish communication with the second terminal in the target communication system;

If the target communication system is a narrowband system, then use the identification of the second terminal in the narrowband system to establish communication with the second terminal in the target communication system.
The communication method according to claim 5, further comprising:

Obtaining a contact terminal of the first terminal, where the contact terminal includes the second terminal;

Sending the mapping relationship between the broadband system identifier and the narrowband system identifier of the contact terminal to the first terminal.
The communication method according to claim 1, further comprising:

If it is detected that the third terminal enters the target area, the third terminal is assigned a broadband system identifier and a narrowband system identifier according to a preset allocation strategy;

Sending the allocated broadband system identifier and narrowband system identifier to the third terminal.
A communication device, characterized in that it includes:

A call request receiving unit, configured to receive a call request sent by a first terminal to a second terminal, where the call request includes a system identifier of the second terminal, and the system identifier is that the second terminal is in a broadband system Identification and/or identification in narrow-band systems;

A communication system determining unit, configured to determine the target communication system used by the second terminal according to the call request, wherein the communication system is a broadband system or a narrowband system;

The communication establishment unit is configured to use the system identification of the second terminal to establish communication with the second terminal in the target communication system.
A base station server, characterized in that it includes:

The communication interface is used to receive a call request sent by the first terminal to the second terminal, where the call request includes the system identifier of the second terminal, and the system identifier is the identifier of the second terminal in the broadband system And/or identification in narrowband systems;

A processor, configured to determine a target communication system used by the second terminal according to the call request, wherein the communication system is a broadband system or a narrowband system; and use the system identification of the second terminal, in the Establish communication with the second terminal in the target communication system.
A storage medium on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the call method according to any one of claims 1 to 8 is implemented.