Data communication method and communication terminal

Abstract

The present application discloses a data communication method and a communication terminal. The data communication method includes: a first communication terminal receives a first communication instruction, the first communication instruction indicates to initiate communication to at least one second communication terminal and at least one third communication terminal, the second communication terminal and the first communication terminal are registered under the first network, the third communication terminal is registered under the second network, and the first network and the second network are different networks; in response to the first communication instruction, a first communication request is initiated to the second communication terminal through the first network, and a second communication request is initiated to the third communication terminal through the fourth communication terminal, the fourth communication terminal is also registered under the second network and communicates with the first communication terminal through the short-range communication network. The above scheme can realize group communication across networks.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a data communication method and a communication terminal. Background Art

[0002] With the development of network technology, communication between communication terminals has brought great convenience to people's lives and work. In order to meet the communication needs of users, open standards such as TETRA (Trans European Trunked Radio, now changed to terrestrial trunked radio) and DMR (Digital Mobile Radio, digital trunked communication standard) have emerged, thus providing command and dispatch, data transmission and telephone services on the same network technology platform.

[0003] Generally, communication terminals in different networks cannot communicate with each other. When the same user needs to communicate data with communication terminals in different networks, he needs to use communication terminals in different networks to communicate data with communication terminals in the same network. Based on this, how to achieve cross-network group communication has become an urgent problem to be solved. Summary of the invention

[0004] The present application mainly provides a data communication method and a communication terminal.

[0005] A first aspect of the present application provides a data communication method, the method comprising: a first communication terminal receives a first communication instruction, the first communication instruction instructs to initiate communication to at least one second communication terminal and at least one third communication terminal, the second communication terminal and the first communication terminal are registered under a first network, the third communication terminal is registered under a second network, and the first network and the second network are different networks; in response to the first communication instruction, a first communication request is initiated to the second communication terminal through the first network, and a second communication request is initiated to the third communication terminal through a fourth communication terminal, the fourth communication terminal is also registered under the second network and communicates with the first communication terminal through a short-range communication network.

[0006] The initiating the second communication request to the third communication terminal through the fourth communication terminal includes: the first communication terminal sends a preset communication message to the fourth communication terminal, so that the fourth communication terminal sends the second communication request to the third communication terminal.

[0007] The method further includes: the first communication terminal establishing a data transmission channel with the fourth communication terminal.

[0008] The method further includes at least one of the following steps: the first communication terminal obtains first transmission data input by a user, uses the first transmission data as data sent using the first network, and sends the first transmission data to a fourth communication terminal through the data transmission channel, so that the fourth communication terminal sends the first transmission data using the second network; the first communication terminal receives second transmission data from the fourth communication terminal through the data transmission channel, and plays the second transmission data and / or sends the second transmission data using the first network, wherein the second transmission data is received by the fourth communication terminal on the second network; the first communication terminal sends third transmission data to the fourth communication terminal through the data transmission channel, so that the fourth communication terminal plays the third transmission data and / or sends the third transmission data using the second network, wherein the third transmission data is received by the first communication terminal on the first network.

[0009] The first communication terminal establishes a connection with the fourth communication terminal via at least one of Bluetooth, WIFI, and infrared; and / or the transmission data includes at least one of voice data, image data, and text data.

[0010] A second aspect of the present application provides a data communication method, the method comprising: a first communication terminal receives a preset communication message;

[0011] In response to the preset communication message, the first communication terminal initiates a first communication request to the second communication terminal through the first network, and the first communication terminal and the second communication terminal are registered under the first network; wherein the preset communication message is generated and sent to the first communication terminal by a communication terminal registered under the second network and communicating with the first communication terminal through a short-range communication network in response to a first communication instruction, and the first communication instruction instructs the communication terminal communicating with the first communication terminal through the short-range communication network to initiate communication to at least one of the second communication terminals, and the first network and the second network are different networks.

[0012] The method further includes: the first communication terminal establishing a data transmission channel with the communication terminal that communicates with the first communication terminal via a short-range communication network.

[0013] Among them, the first communication terminal sends the transmission data to the communication terminal that communicates with the first communication terminal through the short-range communication network through the data transmission channel, so that the communication terminal that communicates with the first communication terminal through the short-range communication network plays the transmission data and / or uses the second network to send the transmission data to other terminals under the second network.

[0014] Among them, the first communication terminal establishes a connection with the communication terminal that communicates with the first communication terminal through the short-range communication network through at least one of Bluetooth, WIFI, and infrared; and / or the transmitted data includes at least one of voice data, image data, and text data.

[0015] The third aspect of the present application provides a communication terminal, comprising a memory and a processor coupled to each other; the processor is used to execute program instructions stored in the memory to implement the data communication method of the first aspect above, and / or implement the data communication method of the second aspect above.

[0016] Through the above method, the first communication terminal and the second communication terminal are registered under the first network, and the third communication terminal and the fourth communication terminal are registered under the second network. Although the first network and the second network are different networks, the fourth communication terminal communicates with the first communication terminal through the short-distance communication network. Therefore, after the first communication terminal receives the first communication instruction indicating to initiate communication to at least one second communication terminal and at least one third communication terminal, it can initiate a first communication request to the second communication terminal through the first network, thereby realizing data communication of communication terminals under the same network, and because the first communication terminal and the fourth communication terminal under different networks are connected through the short-distance communication network, the first communication terminal responds to the first communication instruction and can also initiate a second communication request to the third communication terminal through the fourth communication terminal, thereby realizing group communication across networks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a flowchart of an embodiment of the data communication method of the present application;

[0018] Figure 2 It is a flowchart of another embodiment of the data communication method of the present application;

[0019] Figure 3 It is a structural diagram of an embodiment of a data communication system of the present application;

[0020] Figure 4 It is a schematic diagram of the framework of an embodiment of a communication terminal of the present application. DETAILED DESCRIPTION

[0021] The scheme of the embodiment of the present application is described in detail below in conjunction with the drawings of the specification.

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. The terms "first" and "second" herein are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "and / or" herein is only a description of the association relationship of associated objects, indicating that three relationships can exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the objects associated before and after are in an "or" relationship. In addition, "many" in this article means two or more than two.

[0023] See also Figure 1 , Figure 1 1 is a flow chart of an embodiment of a data communication method of the present application. Specifically, the method of this embodiment includes the following steps:

[0024] Step S11: The first communication terminal receives the first communication instruction.

[0025] The communication terminal of the present application includes but is not limited to mobile phones, tablet computers, laptop computers, wearable devices and other terminals that can realize data communication. The communication instruction of the present application may include at least one communication terminal address so that the network establishes a connection between the communication terminals based on the communication terminal address.

[0026] This embodiment includes two different networks, a first network and a second network, and includes a first communication terminal and a second communication terminal registered in the first network, and a third communication terminal and a fourth communication terminal registered in the second network. Since the first communication instruction indicates to initiate communication to at least one second communication terminal and at least one third communication terminal, after receiving the first communication instruction, the first communication terminal indicates to initiate communication to the second communication terminal belonging to the same first network as the first communication terminal, and at the same time indicates to initiate communication to the third communication terminal belonging to a different network from the first communication terminal. The triggering method of the first communication instruction is not limited here. For example, in an application scenario, the first communication terminal is a mobile phone, and the user triggers the first communication instruction by pressing a button, touch sensing, voice control, etc.

[0027] Step S12: In response to the first communication instruction, a first communication request is initiated to the second communication terminal through the first network, and a second communication request is initiated to the third communication terminal through the fourth communication terminal.

[0028] The fourth communication terminal communicates with the first communication terminal via the short distance communication network.

[0029] The first network and the second network are different networks, and the types of the networks include but are not limited to TETRA, DMR, etc., which are not specifically limited here. Since the fourth communication terminal communicates with the first communication terminal through a short-distance communication network, even if the first communication terminal and the fourth communication terminal are in different networks, data communication can still be performed. It can be understood that the first communication terminal and the second communication terminal are both in the first network. Therefore, in response to the first communication instruction, the first communication terminal initiates a first communication request to the second communication terminal through the first network, and the first communication terminal can use the first network to perform data communication with the second communication terminal under the first network. Since the first communication terminal and the third communication terminal are in different networks, they cannot directly perform data communication. Therefore, when the fourth communication terminal communicates with the first communication terminal through a short-distance communication network, the first communication terminal can respond to the first communication instruction and initiate a second communication request to the third communication terminal through the fourth communication terminal, so that the first communication terminal under the first network and the third communication terminal under the second network can perform data communication. The first communication request and the second communication request instruct the communication terminal to join data communications such as individual calls or group calls.

[0030] After receiving the first communication instruction, the first communication terminal can use the first network to perform first data communication, that is, use the first network to perform data communication with several second communication terminals that also use the first network. This situation is data communication between communication terminals on the same network.

[0031] After receiving the first communication instruction, the first communication terminal can also initiate a second communication request to the third communication terminal through the fourth communication terminal, so that the first communication terminal under the first network can communicate data with the third communication terminal under the second network. . Since the first communication terminal and the second communication terminal are already connected through the short-distance communication network, the first communication terminal can respond to the first communication instruction and can not only communicate data with any communication terminal under the same network to achieve intra-network communication; it can also communicate data with any communication terminal under the second network through the fourth communication terminal to achieve cross-network communication. Although the first communication terminal and the third communication terminal belong to different networks respectively, since the first communication terminal and the fourth communication terminal are already connected, the first communication terminal can establish data communication with the third communication terminal through the fourth communication terminal. Therefore, the first communication terminal can achieve both intra-network communication and cross-network communication based on the first communication instruction.

[0032] In order to realize the communication between the communication terminals under different networks, the first communication terminal and the fourth communication terminal establish a connection through at least one of Bluetooth, WIFI, and infrared. After the first communication terminal and the fourth communication terminal are connected through a short-distance communication network such as Bluetooth, WIFI, infrared, etc., a communication environment is established for the data communication between the two. The transmission data when the above-mentioned communication terminals perform data communication includes at least one of voice data, image data, and text data. For example, when the first communication instruction is a call instruction, the transmission data of the data communication is voice data, so that the first communication terminal performs voice communication with the communication terminal under the first network, and the first communication terminal performs voice communication with the communication terminal under the second network. The data content sent by the first communication terminal can be the same as or different from the data content sent by the fourth communication terminal in the second network. In one embodiment, the corresponding relationship between the data content sent by the first communication terminal and the data content sent by the fourth communication terminal in the second network can be pre-set. After determining the data content sent by the first communication terminal, the data content can be forwarded to the third communication terminal under the second network through the fourth communication terminal. In one embodiment, the data content sent by the first communication terminal in the first data communication is the same as the data content forwarded by the fourth communication terminal to the third communication terminal under the second network, so that the user does not need to repeatedly input the data content sent by the first communication terminal and the data content sent by the fourth communication terminal, thereby simplifying the communication operation.

[0033] In one embodiment, when the second communication request is initiated to the third communication terminal through the fourth communication terminal, the first communication terminal sends a preset communication message to the fourth communication terminal so that the fourth communication terminal sends the second communication request to the third communication terminal. The preset communication message is used to instruct the fourth communication terminal to send the second communication request to the third communication terminal.

[0034] In order to realize data communication between the first communication terminal under the first network and the fourth communication terminal under the second network, the first communication terminal can establish a data transmission channel with the fourth communication terminal so as to transmit data through the data transmission channel. In one embodiment, the first communication terminal obtains the first transmission data input by the user, uses the first transmission data as the data sent using the first network, and sends the first transmission data to the fourth communication terminal through the data transmission channel, so that the fourth communication terminal uses the second network to send the first transmission data, and then the communication terminals under different networks can receive the same first transmission data. The first communication instruction is triggered by the user. After the user triggers the first communication instruction, the user does not need to send the same data content as the data content sent by the first communication terminal to the fourth communication terminal separately, but initiates a second communication request to the third communication terminal through the fourth communication terminal, so as to synchronize the data content to the second communication terminal under the second network. Therefore, the user only needs to input the data content once to realize the synchronous data communication between the communication terminals under different networks, and the data content sent by the communication terminals under different networks is the same.

[0035] In one embodiment, the first communication request includes at least one second communication terminal address, so that after receiving the first communication instruction, the first communication terminal sends the first communication request carrying at least one second communication terminal address to the first network, so that the first network uses the second communication terminal address to establish a communication connection between the first communication terminal and the second communication terminal. The second communication request includes at least one third communication terminal address. After receiving the first communication instruction, the first communication terminal responds to the first communication instruction and sends the second communication request carrying at least one third communication terminal address to the second network through the fourth communication terminal, so that the second network uses the third communication terminal address to establish a communication connection between the third communication terminal and the fourth communication terminal, and then establishes a communication connection between the third communication terminal and the first communication terminal. In another embodiment, the first communication terminal and the second communication terminal establish an association relationship in advance. When the first communication terminal receives the first communication instruction and uses the first network for the first data communication, the first communication terminal sends the first communication request to the first network, so that the first network establishes a communication connection between the first communication terminal and the second communication terminal that have established an association relationship in advance. Therefore, since the first communication terminal and the second communication terminal have established an association relationship in advance, the first communication request does not need to carry the second communication terminal address. Similarly, the third communication terminal and the fourth communication terminal may establish an association relationship in advance, so that the first communication terminal initiates a second communication request to the third communication terminal through the fourth communication terminal in response to the first communication instruction, and the fourth communication terminal sends the second communication request to the second network, so that the second network establishes a communication connection between the third communication terminal and the fourth communication terminal with which the association relationship is established in advance. The above-mentioned method of using the network for data communication is only an exemplary description, and the specific method of using the network for data communication is not specifically limited.

[0036] It can be understood that the second communication terminal address and the third communication terminal address can be multiple. For example, the first communication terminal and at least one second communication terminal belong to the same group, the fourth communication terminal and at least one third communication terminal belong to another same group, and the same group is pre-associated with another group. When the first communication terminal receives and responds to the first communication instruction, it uses the first network to communicate with all other second communication terminals in the same group under the first network. Similarly, it initiates a second communication request to the third communication terminal through the fourth communication terminal, obtains the address of the third communication terminal in the group pre-associated with the group in the data communication under the first network, and uses the second network to communicate with the third communication terminal under the second network, thereby realizing cross-network communication and multi-person communication under the same network.

[0037] It can be understood that after the first communication terminal obtains the first transmission data input by the user, on the one hand, it uses the first network to send the first transmission data to the second communication terminal, and on the other hand, it sends the first transmission data to the fourth communication terminal, so that after the fourth communication terminal uses the second network to send the first transmission data to the third communication terminal, the second communication terminal and the third communication terminal can both communicate and reply based on data communication to achieve multi-party reciprocating communication. For example, after the third communication terminal receives the first transmission data of the fourth communication terminal, it can reply the second transmission data to the fourth communication terminal belonging to the second network, and the fourth communication terminal sends the second transmission data to the first communication terminal connected thereto, so that the first communication terminal receives the second transmission data of the fourth communication terminal through the data transmission channel, and plays the second transmission data, and then the first communication terminal receives the second transmission data received by the fourth communication terminal in the second network. Further, in order to achieve multi-party communication, after the first communication terminal receives the second transmission data sent by the fourth communication terminal, it can also use the first network to send the second transmission data, that is, the first communication terminal uses the first network to send the second transmission data to the second communication terminal, so that the second communication terminal under the first network can also receive the second transmission data received by the fourth communication terminal in the second network, so as to achieve multi-party data communication.

[0038] Similarly, after receiving the first transmission data from the first communication terminal, the second communication terminal can reply with the third transmission data to the first communication terminal belonging to the same first network, wherein the third transmission data is sent by the second communication terminal using the first network. The first communication terminal sends the third transmission data received using the first network to the fourth communication terminal through the data transmission channel, so that the fourth communication terminal plays the third transmission data, and thus the fourth communication terminal receives the third transmission data replied by the second communication terminal to the first transmission data. Furthermore, in order to realize multi-party communication, after receiving the third transmission data, the fourth communication terminal can send the third transmission data using the second network, that is, the fourth communication terminal sends the third transmission data to the third communication terminal using the second network, so that the third communication terminal under the second network can also receive the third transmission data sent by the second communication terminal on the first network.

[0039] In this embodiment, the first communication terminal may make a group call or an individual call based on the first communication instruction, thereby realizing data communication with several communication terminals, which is not specifically limited here.

[0040] Through the above method, the first communication terminal and the second communication terminal are registered under the first network, and the third communication terminal and the fourth communication terminal are registered under the second network. Although the first network and the second network are different networks, the fourth communication terminal communicates with the first communication terminal through the short-range communication network. Therefore, after the first communication terminal receives the first communication instruction indicating to initiate communication to at least one second communication terminal and at least one third communication terminal, it can initiate a first communication request to the second communication terminal through the first network, thereby realizing data communication between communication terminals in the same network, and because the first communication terminal and the fourth communication terminal in different networks are connected through the short-range communication network, the first communication terminal responds to the first communication instruction and initiates a second communication request to the third communication terminal through the fourth communication terminal, thereby realizing data communication between communication terminals in different networks.

[0041] See also Figure 2 , Figure 2 1 is a flow chart of another embodiment of the data communication method of the present application. Specifically, the method of this embodiment includes the following steps:

[0042] Step S21: The first communication terminal receives a preset communication message.

[0043] In this embodiment, the first network and the second network are different networks, and the types of the networks include but are not limited to TETRA, DMR, etc. The preset communication message is generated by a communication terminal registered under the second network and communicating with the first communication terminal through the short-distance communication network in response to the first communication instruction and sent to the first communication terminal. The first communication instruction instructs the communication terminal communicating with the first communication terminal through the short-distance communication network to initiate communication to at least one second communication terminal. The first communication terminal and the second communication terminal are registered under the first network, and the communication terminal communicating with the first communication terminal through the short-distance communication network is registered under the second network. The first communication terminal can use the first network to communicate data with any communication terminal under the first network, and the fourth communication terminal can use the second network to communicate data with any communication terminal under the second network, but the first communication terminal cannot use the second network for data communication. Similarly, the fourth communication terminal cannot use the first network for data communication. Therefore, when the fourth communication terminal communicates with the first communication terminal through the short-distance communication network, the communication terminals under the first network and the second network can communicate data.

[0044] The first communication terminal establishes a connection with the communication terminal that communicates with the first communication terminal through the short-distance communication network through at least one of the short-distance communication networks such as Bluetooth, WIFI, infrared, etc. The communication terminal that communicates with the first communication terminal through the short-distance communication network can be analogous to the above Figure 1 The fourth communication terminal in the embodiment.

[0045] Step S22: In response to the preset communication message, the first communication terminal initiates a first communication request to the second communication terminal through the first network.

[0046] After the first communication terminal receives the preset communication message, in response to the preset communication message, the first communication terminal may initiate a first communication request to the second communication terminal through the first network, so that the first communication terminal establishes a communication connection with the second communication terminal. In addition, the communication terminal registered under the second network and communicating with the first communication terminal through the short-range communication network has already established a communication connection with the first communication terminal. Therefore, the communication terminal registered under the second network and communicating with the first communication terminal through the short-range communication network establishes a communication connection with the second communication terminal.

[0047] In order to realize data communication between communication terminals in the first network and the second network, the first communication terminal establishes a data transmission channel with a communication terminal that communicates with the first communication terminal through a short-distance communication network, so that communication terminals between different networks transmit various data communication data through the data transmission channel. For example, in one embodiment, the first communication terminal sends transmission data to a communication terminal that communicates with the first communication terminal through a short-distance communication network through a data transmission channel, so that the communication terminal that communicates with the first communication terminal through the short-distance communication network plays the transmission data and / or uses the second network to send the transmission data to other terminals in the second network. Among them, the communication terminal that communicates with the first communication terminal through the short-distance communication network can be analogous to the above-mentioned Figure 1 The fourth communication terminal in the embodiment, other terminals can be analogous to the above Figure 1 The third communication terminal in the embodiment.

[0048] In one embodiment, the transmission data in the data communication under the first network and the data communication under the second network includes at least one of voice data, image data, and text data. In one embodiment, the data content sent by the first communication terminal in the data communication under the first network is the same as the data content sent by the fourth communication terminal in the data communication under the second network, which can reduce the user's repeated input of transmission data and simplify communication operations.

[0049] For other descriptions of this embodiment, please refer to the above Figure 1 The detailed description of the illustrated embodiment will not be repeated here.

[0050] For easier understanding, see Figure 3 , Figure 3 It is a structural diagram of an embodiment of a data communication system of the present application.

[0051] The data communication system 300 includes a first communication terminal 10, a second communication terminal 20, a third communication terminal 30, a fourth communication terminal 40, a first network 301, and a second network 302. The first network 301 and the second network 302 are different networks. The first communication terminal 10 and the third communication terminal 30 are registered under the first network 301, and the second communication terminal 20 and the fourth communication terminal 40 are registered under the second network 302. The first communication terminal 10 receives and responds to the first communication instruction, initiates a first communication request to the second communication terminal 20 through the first network 301, realizes data communication under the same network, and initiates a second communication request to the third communication terminal 30 through the fourth communication terminal 40. In this embodiment, two second communication terminals 20 and two third communication terminals 30 are included. In other embodiments, the number of the second communication terminal 20 and the third communication terminal 30 can be at least one, and the specific number is not limited. For other descriptions of the first communication terminal 10, the second communication terminal 20, the third communication terminal 30, the fourth communication terminal 40, the first network 301, and the second network 302, please refer to Figure 1 as well as Figure 2 The description in any embodiment will not be repeated here.

[0052] See also Figure 4 , Figure 4 4 is a schematic diagram of a communication terminal of the present application. Specifically, the communication terminal 400 in the present embodiment includes a memory 410 and a processor 420 coupled to each other. The memory 410 is used to store program instructions and data required to be stored when the processor 420 processes.

[0053] The processor 420 controls the memory 410 and itself to implement the steps of any embodiment of the above-mentioned data communication method. The processor 420 can also be called a CPU (Central Processing Unit). The processor 420 may be an integrated circuit chip with signal processing capabilities. The processor 420 can also be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field-programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. In addition, the processor 420 can be implemented by multiple integrated circuit chips.

[0054] The above are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A data communication method, characterized in that: The method comprises: A first communication terminal receives a first communication instruction, wherein the first communication instruction instructs to initiate communication to at least one second communication terminal and at least one third communication terminal, wherein the second communication terminal and the first communication terminal are registered in a first network, and the third communication terminal is registered in a second network, and the first network and the second network are different networks; In response to the first communication instruction, a first communication request is initiated to the second communication terminal through the first network, and a second communication request is initiated to the third communication terminal through a fourth communication terminal, the fourth communication terminal is also registered under the second network and communicates with the first communication terminal through a short-range communication network, wherein the first communication terminal and the fourth communication terminal establish a connection through at least one of Bluetooth, WIFI, and infrared.

2. The method according to claim 1, characterized in that The initiating a second communication request to the third communication terminal through the fourth communication terminal includes: The first communication terminal sends a preset communication message to the fourth communication terminal, so that the fourth communication terminal sends the second communication request to the third communication terminal.

3. The method according to claim 1, characterized in that The method further comprises: The first communication terminal establishes a data transmission channel with the fourth communication terminal.

4. The method according to claim 3, characterized in that The method further comprises at least one of the following steps: The first communication terminal obtains first transmission data input by a user, uses the first transmission data as data sent by using the first network, and sends the first transmission data to the fourth communication terminal through the data transmission channel, so that the fourth communication terminal sends the first transmission data by using the second network; The first communication terminal receives second transmission data from the fourth communication terminal through the data transmission channel, and plays the second transmission data and / or sends the second transmission data using the first network, wherein the second transmission data is received by the fourth communication terminal on the second network; The first communication terminal sends the third transmission data to the fourth communication terminal through the data transmission channel, so that the fourth communication terminal plays the third transmission data and / or sends the third transmission data using the second network, wherein the third transmission data is received by the first communication terminal in the first network.

5. The method according to claim 4, characterized in that The transmission data includes at least one of voice data, image data, and text data.

6. A data communication method, characterized in that: The method comprises: The first communication terminal receives a preset communication message; In response to the preset communication message, the first communication terminal initiates a first communication request to the second communication terminal through the first network, and the first communication terminal and the second communication terminal are registered under the first network; wherein the preset communication message is generated and sent to the first communication terminal in response to a first communication instruction by a communication terminal registered under a second network and communicating with the first communication terminal via a short-range communication network, wherein the first communication instruction instructs the communication terminal communicating with the first communication terminal via a short-range communication network to initiate communication to at least one of the second communication terminals, and the first network and the second network are different networks, wherein the first communication terminal and the communication terminal communicating with the first communication terminal via a short-range communication network establish a connection via at least one of Bluetooth, WIFI, and infrared.

7. The method according to claim 6, characterized in that The method further comprises: The first communication terminal establishes a data transmission channel with the communication terminal that communicates with the first communication terminal through the short-range communication network.

8. The method according to claim 7, characterized in that The first communication terminal sends the transmission data to the communication terminal that communicates with the first communication terminal through the short-range communication network through the data transmission channel, so that the communication terminal that communicates with the first communication terminal through the short-range communication network plays the transmission data and / or uses the second network to send the transmission data to other terminals under the second network.

9. The method according to claim 8, characterized in that The transmission data includes at least one of voice data, image data, and text data.

10. A communication terminal, characterized in that: including memory and processor; The processor is used to execute the program instructions stored in the memory to implement the method described in any one of claims 1 to 5 and / or to implement the method described in any one of claims 6 to 9.

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