Group call switching method and system in broadband and narrowband fusion system

Abstract

The invention relates to the technical field of broadband and narrowband fusion systems, and discloses a group call switching method and system in a broadband and narrowband fusion system, and the group call switching method in the broadband and narrowband fusion system comprises the following steps: establishing a group call state, detecting group call switching, carrying out switching preparation, switching, and completing switching. According to the group call switching method and system in the broadband and narrowband fusion system, frequency resource allocation is carried out in advance through the system terminal, the stability of the switching process is guaranteed, meanwhile, frequency switching is confirmed through the equipment terminal and the base station, synchronization with the system terminal is kept, synchronization of signals and clocks is guaranteed, abnormity is avoided, and the switching efficiency is improved. According to the group call switching method and system in the broadband and narrowband fusion system, available frequency resources are determined through the device terminal and the base station and are fed back to each other, the base station configures and synchronizes the frequency resources selected by the device terminal according to the frequency resources selected by the device terminal, and it is guaranteed that the device terminal can normally use the allocated frequency resources.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wide and narrow band fusion system, and particularly relates to a group call switching method and system in a wide and narrow band fusion system. BACKGROUND

[0002] The group communication private network wireless technology is experiencing a transition period from narrow band to wide band, and is expected to provide greater wireless air interface bandwidth and have wider and faster data transmission capability. Generally, a communication terminal adopts different communication modes in a wide band network and a narrow band network, and therefore, the communication terminal can only perform a communication service in the narrow band network or in the wide band network.

[0003] In the wide and narrow band fusion system, the device and the system and the base station cannot be kept in a synchronous state during group call switching, and the access is abnormal due to the non-synchronization of the device signal and the clock, which affects the normal connection, and the overall use has certain disadvantages. SUMMARY

[0004] The present application aims to provide a group call switching method and system in a wide and narrow band fusion system to solve the problems in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a group call switching method in a wide and narrow band fusion system, which comprises the following steps:

[0006] S1, establishing a group call state, adding all device terminals to the system terminal, and allocating frequency resources by the system terminal to ensure that each device terminal can run smoothly;

[0007] S2, detecting group call switching, when the system terminal detects that group call switching is needed, first allocating frequency resources, and pre-allocating certain frequency resources for the wide band part and the narrow band part to ensure smooth switching process;

[0008] S3, preparing for switching, the system terminal sends an instruction to all subordinate device terminals to inform all device terminals participating in the group call to prepare for switching, and the device terminal receives the instruction and sets the frequency resources according to the pre-allocated frequency resources;

[0009] S4, switching, after receiving the instruction from the system terminal, the device terminal switches from wide band to narrow band or from narrow band to wide band according to the system terminal instruction, and sets the frequency according to the pre-allocated frequency resources of the system terminal during the switching process;

[0010] S5. The handover is complete. The device terminal sends a confirmation message of successful handover to the system terminal. After receiving the confirmation message, the system terminal updates the corresponding call status and issues instructions to other device terminals participating in the group call. After the handover is completed, the device terminal can continue to participate in the original group call communication, and can also select other group call and individual call communication as needed.

[0011] Preferably, the allocation of frequency resources in step S2 includes the following specific steps:

[0012] S2.1 When the system terminal detects that a group call handover is required, the system terminal sends a request to the base station, indicating that frequency resources need to be allocated.

[0013] S2.2 After receiving a request from a system terminal, the base station determines the type and specific frequency range of the allocated frequency resources based on the network settings.

[0014] S2.3 The base station sends frequency resource allocation information to the system terminal, including frequency range and bandwidth parameters;

[0015] S2.4 After receiving the frequency resource allocation information from the base station, the system terminal sets the frequency according to these parameters to ensure that communication with the base station takes place on the allocated frequency. After the frequency setting is completed, group call operations can be performed on the allocated frequency resources.

[0016] Preferably, the frequency resource type determined in S2.2 is either a broadband portion or a narrowband portion.

[0017] Preferably, the handover preparation notification in step S3, where the device terminal performs settings according to the instructions, includes the following specific steps:

[0018] S3.1 After receiving the instruction from the system terminal, the device terminal parses the instruction;

[0019] S3.2 The device terminal determines the pre-allocated frequency resources according to the instructions of the system terminal;

[0020] S3.3 The device terminal switches its communication frequency to the designated frequency resource by configuring radio parameters according to the determined frequency resource.

[0021] S3.4 The device terminal sets the communication parameters of the device terminal according to the instructions of the system terminal to ensure that communication with other device terminals can be carried out normally;

[0022] S3.5 After completing the frequency resource settings and communication parameter settings, the device terminal sends a confirmation message to the system terminal, indicating that the handover preparation is complete and group call communication can begin.

[0023] Preferably, the frequency resources in S3.2 include channel number, frequency bandwidth, and channel number.

[0024] Preferably, the frequency setting in step S4, based on the frequency resources pre-allocated to the system terminal, includes the following specific steps:

[0025] S4.1 The device terminal receives the instruction from the system terminal and switches according to the system terminal instruction, including switching from broadband to narrowband or from narrowband to broadband.

[0026] S4.2 The device terminal determines the available frequency resources by communicating with the base station based on the pre-allocated frequency resources;

[0027] S4.3 After determining the available frequency resources, the device terminal selects a suitable frequency for switching according to a certain selection strategy;

[0028] S4.4. Based on the selected frequency, the device terminal sends a frequency setting request. After receiving the request, the base station will set the frequency and send a confirmation message to the device terminal.

[0029] S4.5 After receiving the confirmation message from the base station, the device terminal switches frequencies according to the confirmed frequency settings. During the switching process, the device terminal closes the current connection, re-establishes the communication connection with the base station, and uses the new frequency for communication.

[0030] S4.6 After the handover is completed, the device terminal needs to be synchronized with the system terminal to ensure signal synchronization.

[0031] Preferably, the frequency selection in S4.3 needs to take into account channel quality, interference, and frequency utilization.

[0032] Preferably, in step S4.2, the available frequency resources are determined by the device terminal sending an addressing request to the base station to request the allocation of frequency resources. After receiving the addressing request from the terminal, the base station performs access permission verification. If the verification is successful, it sends an access request to the device terminal. The base station allocates available frequency resources to the device terminal according to the pre-allocated frequency resource table in the terminal. The device terminal selects one of the frequency resources according to the received frequency resource allocation information. The device terminal informs the base station of the selected frequency resource by sending frequency resource confirmation information. The base station configures and synchronizes the selected frequency resource according to the device terminal to ensure that the device terminal can use the allocated frequency resources normally. Data communication begins between the device terminal and the base station, and information is transmitted using the allocated available frequency resources.

[0033] Preferably, in step S4, the device terminal needs to maintain signal and clock synchronization with the base station to avoid abnormalities.

[0034] A group call handover system in a broadband-narrowband converged system, the group call handover system in the broadband-narrowband converged system includes a computer, the computer executing a group call handover method in the broadband-narrowband converged system.

[0035] Compared with the prior art, the present invention provides a group call handover method and system in a broadband and narrowband converged system, which has the following beneficial effects:

[0036] 1. The group call handover method and system in this broadband and narrowband converged system pre-allocates frequency resources through the system terminal to ensure the stability of the handover process. At the same time, the equipment terminal and the base station mutually confirm the frequency handover and keep synchronized with the system terminal to ensure signal and clock synchronization, avoid abnormalities, and prevent the normal connection of the equipment terminal from being affected.

[0037] 2. The group call handover method and system in this broadband and narrowband converged system determines the available frequency resources through the device terminal and the base station, and provides feedback to each other. The base station configures and synchronizes the frequency resources selected by the device terminal to ensure that the device terminal can use the allocated frequency resources normally. Attached Figure Description

[0038] Fig. 1 This is a schematic diagram of the steps of the present invention;

[0039] Fig. 2 This is a schematic diagram illustrating the detailed steps of the present invention. Detailed Implementation

[0040] like Figs. 1-2 As shown, the present invention provides a technical solution: a group call handover method in a broadband and narrowband converged system, the group call handover method in a broadband and narrowband converged system includes the following steps:

[0041] S1. Establish group call status, add all device terminals to the system terminal, and the system terminal allocates frequency resources to ensure that each device terminal can operate stably;

[0042] S2. Detect group call handover. When the system terminal detects that a group call handover is required, it first allocates frequency resources. The broadband and narrowband parts will pre-allocate a certain amount of frequency resources to ensure a smooth handover process.

[0043] S3. Prepare for handover. The system terminal sends instructions to all subordinate device terminals to notify all device terminals participating in the group call to prepare for handover. After receiving the instructions, the device terminals will make corresponding settings according to the pre-allocated frequency resources.

[0044] S4. Switching: After receiving the instruction from the system terminal, the device terminal switches from broadband to narrowband or from narrowband to broadband according to the instruction from the system terminal. During this switching process, the device terminal sets the frequency according to the frequency resources pre-allocated by the system terminal.

[0045] S5. The handover is complete. The device terminal sends a confirmation message of successful handover to the system terminal. After receiving the confirmation message, the system terminal updates the corresponding call status and issues instructions to other device terminals participating in the group call. After the handover is completed, the device terminal can continue to participate in the original group call communication, and can also select other group call and individual call communication as needed.

[0046] The allocation of frequency resources in S2 includes the following specific steps:

[0047] S2.1 When the system terminal detects that a group call handover is required, the system terminal sends a request to the base station, indicating that frequency resources need to be allocated.

[0048] S2.2 After receiving a request from a system terminal, the base station determines the type and specific frequency range of the allocated frequency resources based on the network settings.

[0049] S2.3 The base station sends frequency resource allocation information to the system terminal, including frequency range and bandwidth parameters;

[0050] S2.4 After receiving the frequency resource allocation information from the base station, the system terminal sets the frequency according to these parameters to ensure that communication with the base station takes place on the allocated frequency. After the frequency setting is completed, group call operations can be performed on the allocated frequency resources.

[0051] S2.2 determines the type of frequency resources to be allocated as broadband and narrowband.

[0052] In S3, the notification of handover preparation involves the following specific steps for the device terminal to be configured according to the instructions:

[0053] S3.1 After receiving the instruction from the system terminal, the device terminal parses the instruction;

[0054] S3.2 The device terminal determines the pre-allocated frequency resources according to the instructions of the system terminal;

[0055] S3.3 The device terminal switches its communication frequency to the designated frequency resource by configuring radio parameters according to the determined frequency resource.

[0056] S3.4 The device terminal sets the communication parameters of the device terminal according to the instructions of the system terminal to ensure that communication with other device terminals can be carried out normally;

[0057] S3.5 After completing the frequency resource settings and communication parameter settings, the device terminal sends a confirmation message to the system terminal, indicating that the handover preparation is complete and group call communication can begin.

[0058] In S3.2, frequency resources include channel number, frequency bandwidth, and channel number.

[0059] In S4, the device terminal performs frequency settings based on the frequency resources pre-allocated to the system terminal, including the following specific steps:

[0060] S4.1 The device terminal receives the instruction from the system terminal and switches according to the system terminal instruction, including switching from broadband to narrowband or from narrowband to broadband.

[0061] S4.2 The device terminal determines the available frequency resources by communicating with the base station based on the pre-allocated frequency resources;

[0062] S4.3 After determining the available frequency resources, the device terminal selects a suitable frequency for switching according to a certain selection strategy;

[0063] S4.4. Based on the selected frequency, the device terminal sends a frequency setting request. After receiving the request, the base station will set the frequency and send a confirmation message to the device terminal.

[0064] S4.5 After receiving the confirmation message from the base station, the device terminal switches frequencies according to the confirmed frequency settings. During the switching process, the device terminal closes the current connection, re-establishes the communication connection with the base station, and uses the new frequency for communication.

[0065] S4.6 After the handover is completed, the device terminal needs to be synchronized with the system terminal to ensure signal synchronization.

[0066] In S4.3, frequency selection needs to consider channel quality, interference, and frequency utilization.

[0067] In S4.2, the available frequency resources are determined by the device terminal sending an addressing request to the base station to request the allocation of frequency resources. After receiving the addressing request from the terminal, the base station performs access permission verification. If the verification is successful, it sends an access request to the device terminal. The base station allocates available frequency resources to the device terminal according to the pre-allocated frequency resource table in the terminal. The device terminal selects one of the frequency resources according to the received frequency resource allocation information. The device terminal informs the base station of the selected frequency resource by sending frequency resource confirmation information. The base station configures and synchronizes the selected frequency resource according to the device terminal to ensure that the device terminal can use the allocated frequency resource normally. Data communication between the device terminal and the base station begins, and information is transmitted using the allocated available frequency resources.

[0068] In S4, the device terminal must maintain signal and clock synchronization with the base station to avoid abnormalities.

[0069] This embodiment also proposes a group call handover system in a broadband-narrowband converged system. The group call handover system in the broadband-narrowband converged system includes a computer, which executes the group call handover method in the broadband-narrowband converged system.

[0070] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A group call handover method in a broadband-narrowband converged system, characterized in that: The group call handover method in the broadband-narrowband converged system includes the following steps: S1. Establish group call status, add all device terminals to the system terminal, and the system terminal allocates frequency resources to ensure that each device terminal can operate stably; S2. Detect group call handover. When the system terminal detects that a group call handover is required, it first allocates frequency resources. The broadband and narrowband parts will pre-allocate a certain amount of frequency resources. S3. Prepare for handover. The system terminal sends instructions to all subordinate device terminals to notify all device terminals participating in the group call to prepare for handover. After receiving the instructions, the device terminals will make corresponding settings according to the pre-allocated frequency resources. S4. Switching: After receiving the instruction from the system terminal, the device terminal switches from broadband to narrowband or from narrowband to broadband according to the instruction from the system terminal. During this switching process, the device terminal sets the frequency according to the frequency resources pre-allocated by the system terminal. S5. The handover is complete. The device terminal sends a confirmation message of successful handover to the system terminal. After receiving the confirmation message, the system terminal updates the corresponding call status and issues instructions to other device terminals participating in the group call. After the handover is completed, the device terminal can continue to participate in the original group call communication, and can also select other group call and individual call communication as needed.

2. The group call handover method in a broadband-narrowband converged system according to claim 1, characterized in that: The allocation of frequency resources in S2 includes the following specific steps: S2.1 When the system terminal detects that a group call handover is required, the system terminal sends a request to the base station, indicating that frequency resources need to be allocated. S2.2 After receiving a request from a system terminal, the base station determines the type and specific frequency range of the allocated frequency resources based on the network settings. S2.3 The base station sends frequency resource allocation information to the system terminal, including frequency range and bandwidth parameters; S2.4 After receiving the frequency resource allocation information from the base station, the system terminal sets the frequency according to these parameters to ensure that communication with the base station takes place on the allocated frequency. After the frequency setting is completed, group call operations can be performed on the allocated frequency resources.

3. The group call handover method in a broadband-narrowband converged system according to claim 2, characterized in that: In S2.2, the frequency resource type to be allocated is determined to be either broadband or narrowband.

4. The group call handover method in a broadband-narrowband converged system according to claim 1, characterized in that: The handover preparation notification in S3, and the device terminal settings according to the instructions, include the following specific steps: S3.1 After receiving the instruction from the system terminal, the device terminal parses the instruction; S3.2 The device terminal determines the pre-allocated frequency resources according to the instructions of the system terminal; S3.3 The device terminal switches its communication frequency to the designated frequency resource by configuring radio parameters according to the determined frequency resource. S3.4 The device terminal sets the communication parameters of the device terminal according to the instructions of the system terminal; S3.5 After completing the frequency resource settings and communication parameter settings, the device terminal sends a confirmation message to the system terminal, indicating that the handover preparation is complete and group call communication can begin.

5. The group call handover method in a broadband-narrowband converged system according to claim 4, characterized in that: The frequency resources in S3.2 include channel number, frequency bandwidth, and channel number.

6. The group call handover method in a broadband-narrowband converged system according to claim 1, characterized in that: The frequency setting process in S4, based on the frequency resources pre-allocated to the system terminal, includes the following specific steps: S4.1 The device terminal receives the instruction from the system terminal and switches according to the system terminal instruction, including switching from broadband to narrowband or from narrowband to broadband. S4.2 The device terminal determines the available frequency resources by communicating with the base station based on the pre-allocated frequency resources; S4.3 After determining the available frequency resources, the device terminal selects a suitable frequency for switching according to a certain selection strategy; S4.

4. Based on the selected frequency, the device terminal sends a frequency setting request. After receiving the request, the base station will set the frequency and send a confirmation message to the device terminal. S4.5 After receiving the confirmation message from the base station, the device terminal switches frequencies according to the confirmed frequency settings. During the switching process, the device terminal closes the current connection, re-establishes the communication connection with the base station, and uses the new frequency for communication. S4.6 After the handover is completed, the device terminal needs to be synchronized with the system terminal.

7. The group call handover method in a broadband-narrowband converged system according to claim 6, characterized in that: In S4.3, frequency selection needs to take into account channel quality, interference, and frequency utilization.

8. The group call handover method in a broadband-narrowband converged system according to claim 6, characterized in that: In step S4.2, the available frequency resources are determined by the device terminal sending an addressing request to the base station to request the allocation of frequency resources. After receiving the addressing request from the terminal, the base station performs access permission verification. If the verification is successful, it sends an access request to the device terminal. The base station allocates available frequency resources to the device terminal according to the pre-allocated frequency resource table in the terminal. The device terminal selects one of the frequency resources according to the received frequency resource allocation information. The device terminal informs the base station of the selected frequency resource by sending frequency resource confirmation information. The base station configures and synchronizes the selected frequency resource according to the selected frequency resource. Data communication between the device terminal and the base station begins, and information is transmitted using the allocated available frequency resources.

9. The group call handover method in a broadband-narrowband converged system according to claim 1, characterized in that: In S4, the device terminal needs to maintain signal synchronization and clock synchronization with the base station.

10. A group call handover system in a broadband and narrowband converged system, characterized in that: The group call handover system in the broadband-narrowband converged system includes a computer, which executes the group call handover method in the broadband-narrowband converged system as described in claims 1-9.

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