Cross-system dynamic recombination method

Abstract

The invention relates to the technical field of communication, and discloses a cross-system dynamic recombination method, which comprises the following steps of: S1, setting a broadband terminal, a dual-mode terminal and a narrowband terminal into a digital trunking mode, logging the broadband terminal into a broadband system, logging the dual-mode terminal into the broadband system and a narrowband system, and logging the narrowband terminal into the narrowband system; s2, the frequency points of the direct mode of the dual-mode terminal and the narrow-band terminal are preset to be the same, and communication in the direct mode is supported; and S3, the dispatching desk initiates a dynamic group call from the broadband system, wherein the dynamic group call carries the broadband user number and the narrowband user number. According to the invention, through intelligent scheduling of the dynamic group call, the use state of the narrowband system resource can be identified, the resource optimization distribution is carried out in the broadband system and the narrowband system according to requirements, and the DM function of the terminal is reasonably used, so that the call failure caused by insufficient narrowband resources is avoided.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a method for cross-system dynamic reorganization. Background Art

[0002] In recent years, with the development of public network communication technology, especially the widespread application of 4G / 5G broadband networks, the interconnection and interoperability of narrowband and broadband systems has become an important issue. Public network broadband systems provide a wide communication bandwidth to meet the high bandwidth requirements of voice, data and even video, while narrowband systems are more efficient in coverage and resource management, but resources are limited. Narrowband systems (such as TETRA and DMR) are mainly used in public safety, emergency communications and other fields, with the advantages of wide coverage and high communication reliability.

[0003] According to a method and system for realizing group call merging disclosed in a Chinese patent with the publication number "CN106454761B", the method includes: a core network device receives a dynamic reorganization message sent by a dispatch station, the dynamic reorganization message carries a dynamic reorganization operation identifier, the merged group attribute information obtained after merging, the subgroup number requested for merging, and a group merge identifier; according to the dynamic reorganization message, the core network device establishes a merged group, and issues a dynamic reorganization instruction to each subgroup terminal in each subgroup, the dynamic reorganization instruction carries the subgroup number and the merged group number; each subgroup terminal receives the dynamic reorganization instruction, and establishes a mapping relationship between the subgroup number and the merged group number; when a user initiates a subgroup call, a merged group having a mapping relationship with the subgroup called by the user is determined according to the mapping relationship, and a merged group call establishment request carrying the merged group information is sent to the core network device. The present invention uses a specific dynamic reorganization process, which is simple to implement, has high air interface efficiency, and provides a good user experience.

[0004] The existing technology has improved the efficiency of cross-system group calls to a certain extent, but it has not solved the problem of group call failure caused by insufficient channel resources when calling narrowband sub-groups. The channel resources of narrowband base stations are limited, especially in emergencies, which may lead to call failures, inability to connect terminals, etc. Therefore, how to ensure that narrowband terminals can receive group calls in time during the group call process of wide-narrowband systems has become an urgent problem to be solved, so a cross-system dynamic reorganization method is proposed to solve the above-mentioned problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method for cross-system dynamic reorganization in view of the deficiencies in the above-mentioned prior art.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: a method for cross-system dynamic reorganization, comprising the following steps: S1. Set the broadband terminal, dual-mode terminal and narrowband terminal to digital trunking mode. The broadband terminal logs in to the broadband system, the dual-mode terminal logs in to the broadband system and the narrowband system, and the narrowband terminal logs in to the narrowband system. S2: The frequency points of the direct mode of the preset dual-mode terminal and the narrowband terminal are the same, and communication in the direct mode is supported; S3, the dispatching station initiates a dynamic group call from the broadband system, carrying the broadband user number and the narrowband user number; S4. The broadband system first establishes a temporary group on the broadband side, and then pages the broadband user. Then, the broadband system routes the call to the narrowband system through the Internet gateway, carrying the narrowband user number. After receiving the call, the narrowband system establishes a temporary group. The narrowband system determines whether there are enough channel resources to call the terminal on the narrowband side. If there are not enough channel resources (service channels), the narrowband system responds to the broadband system "insufficient channel resources (service channels)". The broadband system sends a command to the dual-mode terminal to switch the narrowband module of the dual-mode terminal to the direct mode, carrying the air interface address of the temporary group on the narrowband side. S5. The narrowband system sends a direct mode command to the relevant narrowband terminal through the control channel, instructing the relevant narrowband terminal to switch to the direct mode. The command carries the narrowband temporary group air interface address. The dual-mode terminal and the narrowband terminal determine that the dual-mode terminal is the caller of the group call and the other terminals are called members through the signaling of the direct communication channel. As a result, the narrowband terminal enters the group call initiated by the dispatch center.

[0007] Preferably, the broadband system is B-TrunC / LTE, and the narrowband system is PDT / DMR / Tetra.

[0008] Preferably, the broadband terminal refers to a terminal that can only wirelessly access a broadband system, the dual-mode terminal refers to a terminal that can wirelessly access both a broadband system and a narrowband system, and the narrowband terminal refers to a terminal that can only wirelessly access a narrowband system.

[0009] Preferably, the group call principle is: The dispatching station initiates a group call to group A of the broadband system. The broadband system first establishes a temporary group on the broadband side and initiates paging to the broadband users. If it is determined that the user list contains narrowband users, the broadband system sends a dynamic group establishment instruction to the narrowband system through the Internet gateway, carrying the narrowband user list; The narrowband system receives the dynamic group call command from the broadband system, establishes a temporary group and initiates paging to the narrowband users.

[0010] Preferably, the principle by which the narrowband system senses insufficient base station channel resources is: The narrowband core network sends a group call command to the narrowband base station, carrying the number of group members, to detect whether the channels of this base station are sufficient. If the channels are insufficient, a response is sent to the narrowband core network, carrying an indication of insufficient channels.

[0011] Preferably, the principle of switching the narrowband side of the dual-mode terminal to the pass-through mode is: The broadband module in the dual-mode terminal receives a narrowband direct mode switching instruction from the broadband system. The instruction carries the narrowband temporary group air interface address (B group air interface address). The broadband module notifies the control module in the dual-mode terminal. The control module sends a direct mode switching instruction to the narrowband module. The narrowband module sends a registration signaling to the narrowband system, switches the mode to the direct mode, and sends a direct wireless synchronization signal at a preset frequency.

[0012] Preferably, the principle of switching the narrowband terminal to the through mode is: The narrowband core network notifies the narrowband base station, and the narrowband base station sends an extended dynamic reorganization signaling carrying an indication of switching to the direct mode through the control channel. The narrowband terminal receives the signaling and verifies its identity within a certain period of time and switches to the direct mode.

[0013] Preferably, the principle of the dual-mode terminal calling the narrowband terminal in direct mode is: The dual-mode terminal continuously sends signaling (DGNA_Req) ​​through the direct communication channel to carry the calling and called air interface numbers to establish a dynamic group relationship. After that, the dual-mode terminal continuously sends signaling (DGNA_Block) through the direct communication channel with the air interface number of group B. After receiving the signaling, the narrowband terminal first performs authorization verification on the initiator and matches the group ID before establishing a temporary group.

[0014] The present invention adopts the above technical solution to bring the following beneficial effects: This cross-system dynamic reorganization method can identify the usage status of narrowband system resources through intelligent scheduling of dynamic group calls, optimize resource allocation in broadband and narrowband systems according to needs, and reasonably use the DM function of the terminal, thereby avoiding call failures caused by insufficient narrowband resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the architecture of the present invention; Figure 2 It is a schematic diagram of the dual-mode terminal of the present invention. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-2, one embodiment of the present invention is: a method for cross-system dynamic reorganization, comprising the following steps: S1. Set the broadband terminal, dual-mode terminal and narrowband terminal to digital trunking mode. The broadband terminal logs in to the broadband system, the dual-mode terminal logs in to the broadband system and the narrowband system, and the narrowband terminal logs in to the narrowband system. S2: The frequency points of the direct mode of the preset dual-mode terminal and the narrowband terminal are the same, and communication in the direct mode is supported; S3, the dispatching station initiates a dynamic group call from the broadband system, carrying the broadband user number and the narrowband user number; S4. The broadband system first establishes a temporary group on the broadband side, and then pages the broadband user. Then, the broadband system routes the call to the narrowband system through the Internet gateway, carrying the narrowband user number. After receiving the call, the narrowband system establishes a temporary group. The narrowband system determines whether there are enough channel resources to call the terminal on the narrowband side. If there are not enough channel resources (service channels), the narrowband system responds to the broadband system "insufficient channel resources (service channels)". The broadband system sends a command to the dual-mode terminal to switch the narrowband module of the dual-mode terminal to the direct mode, carrying the air interface address of the temporary group on the narrowband side. S5. The narrowband system sends a direct mode command to the relevant narrowband terminal through the control channel, instructing the relevant narrowband terminal to switch to the direct mode. The command carries the narrowband temporary group air interface address. The dual-mode terminal and the narrowband terminal determine that the dual-mode terminal is the caller of the group call and the other terminals are called members through the signaling of the direct communication channel. As a result, the narrowband terminal enters the group call initiated by the dispatch center.

[0018] Among them, the broadband system is B-TrunC / LTE, and the narrowband system is PDT / DMR / Tetra.

[0019] Among them, broadband terminal refers to a terminal that can only wirelessly access a broadband system, dual-mode terminal refers to a terminal that can wirelessly access both a broadband system and a narrowband system, and narrowband terminal refers to a terminal that can only wirelessly access a narrowband system.

[0020] The group call principle is as follows: The dispatching station initiates a group call to group A of the broadband system. The broadband system first establishes a temporary group on the broadband side and initiates paging to the broadband users. If it is determined that the user list contains narrowband users, the broadband system sends a dynamic group establishment instruction to the narrowband system through the Internet gateway, carrying the narrowband user list; The narrowband system receives the dynamic group call command from the broadband system, establishes a temporary group and initiates paging to the narrowband users.

[0021] The principle by which the narrowband system senses insufficient base station channel resources is as follows: The narrowband core network sends a group call command to the narrowband base station, carrying the number of group members, to detect whether the channels of this base station are sufficient. If the channels are insufficient, a response is sent to the narrowband core network, carrying an indication of insufficient channels.

[0022] The principle of switching the narrowband side of the dual-mode terminal to the pass-through mode is as follows: The broadband module in the dual-mode terminal receives a narrowband direct mode switching instruction from the broadband system. The instruction carries the narrowband temporary group air interface address (B group air interface address). The broadband module notifies the control module in the dual-mode terminal. The control module sends a direct mode switching instruction to the narrowband module. The narrowband module sends a registration signaling to the narrowband system, switches the mode to the direct mode, and sends a direct wireless synchronization signal at a preset frequency.

[0023] The principle of narrowband terminal switching to direct mode is as follows: The narrowband core network notifies the narrowband base station, and the narrowband base station sends an extended dynamic reorganization signaling carrying an indication of switching to the direct mode through the control channel. The narrowband terminal receives the signaling and verifies its identity within a certain period of time and switches to the direct mode.

[0024] The principle of the dual-mode terminal calling the narrowband terminal in direct mode is as follows: The dual-mode terminal continuously sends signaling (DGNA_Req) ​​through the direct communication channel to carry the calling and called air interface numbers to establish a dynamic group relationship. After that, the dual-mode terminal continuously sends signaling (DGNA_Block) through the direct communication channel with the air interface number of group B. After receiving the signaling, the narrowband terminal first performs authorization verification on the initiator and matches the group ID before establishing a temporary group.

[0025] The present invention can identify the usage status of narrowband system resources through intelligent scheduling of dynamic group calls, optimize resource allocation in broadband systems and narrowband systems according to needs, and reasonably use the DM (direct mode) function of the terminal, thereby avoiding call failures caused by insufficient narrowband resources.

[0026] The present invention provides a method for dynamic reorganization across systems. There are many methods and ways to implement the technical solution. The above is only a preferred implementation of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A method for dynamic reorganization across systems, characterized in that: The following steps are involved: S1. Set the broadband terminal, dual-mode terminal and narrowband terminal to digital trunking mode. The broadband terminal logs in to the broadband system, the dual-mode terminal logs in to the broadband system and the narrowband system, and the narrowband terminal logs in to the narrowband system. S2: The frequency points of the direct mode of the preset dual-mode terminal and the narrowband terminal are the same, and communication in the direct mode is supported; S3, the dispatching station initiates a dynamic group call from the broadband system, carrying the broadband user number and the narrowband user number; S4. The broadband system first establishes a temporary group on the broadband side, and then pages the broadband user. Then, the broadband system routes the call to the narrowband system through the Internet gateway, carrying the narrowband user number. After receiving the call, the narrowband system establishes a temporary group. The narrowband system determines whether there are enough channel resources to call the terminal on the narrowband side. If there are not enough channel resources, the narrowband system responds to the broadband system "insufficient channel resources". The broadband system sends a command to the dual-mode terminal to switch the narrowband module of the dual-mode terminal to the direct mode, carrying the air interface address of the temporary group on the narrowband side. S5. The narrowband system sends a direct mode command to the relevant narrowband terminal through the control channel, instructing the relevant narrowband terminal to switch to the direct mode. The command carries the narrowband temporary group air interface address. The dual-mode terminal and the narrowband terminal determine that the dual-mode terminal is the caller of the group call and the other terminals are called members through the signaling of the direct communication channel. As a result, the narrowband terminal enters the group call initiated by the dispatch center.

2. A method for cross-system dynamic reorganization according to claim 1, characterized in that: The broadband system is B-TrunC / LTE, and the narrowband system is PDT / DMR / Tetra.

3. A method for cross-system dynamic reorganization according to claim 1, characterized in that: The broadband terminal refers to a terminal that can only wirelessly access a broadband system, the dual-mode terminal refers to a terminal that can wirelessly access both a broadband system and a narrowband system, and the narrowband terminal refers to a terminal that can only wirelessly access a narrowband system.

4. The method for cross-system dynamic reorganization according to claim 1, characterized in that: The group call principle is: The dispatching station initiates a group call to group A of the broadband system. The broadband system first establishes a temporary group on the broadband side and initiates paging to the broadband users. If it is determined that the user list contains narrowband users, the broadband system sends a dynamic group establishment instruction to the narrowband system through the Internet gateway, carrying the narrowband user list; The narrowband system receives the dynamic group call command from the broadband system, establishes a temporary group and initiates paging to the narrowband users.

5. The method for cross-system dynamic reorganization according to claim 1, characterized in that: The principle by which the narrowband system senses insufficient base station channel resources is as follows: The narrowband core network sends a group call command to the narrowband base station, carrying the number of group members, to detect whether the channels of this base station are sufficient. If the channels are insufficient, a response is sent to the narrowband core network, carrying an indication of insufficient channels.

6. A method for dynamic cross-system reorganization according to claim 1, characterized in that: The principle of switching the narrowband side of the dual-mode terminal to the direct mode is: The broadband module in the dual-mode terminal receives a narrowband direct mode switching instruction from the broadband system. The instruction carries the narrowband temporary group air interface address. The broadband module notifies the control module in the dual-mode terminal. The control module sends a direct mode switching instruction to the narrowband module. The narrowband module sends a registration signaling to the narrowband system, switches the mode to the direct mode, and sends a direct wireless synchronization signal at a preset frequency.

7. A method for dynamic cross-system reorganization according to claim 1, characterized in that: The principle of switching the narrowband terminal to the direct mode is: The narrowband core network notifies the narrowband base station, and the narrowband base station sends an extended dynamic reorganization signaling carrying an indication of switching to the direct mode through the control channel. The narrowband terminal receives the signaling and verifies its identity within a certain period of time and switches to the direct mode.

8. A method for dynamic reorganization across systems according to claim 1, characterized in that: The principle of the dual-mode terminal calling the narrowband terminal in direct mode is: The dual-mode terminal continuously sends signaling carrying the calling and called party's empty interface numbers through the direct communication channel to establish a dynamic group relationship. After that, the dual-mode terminal continuously sends signaling B group empty interface number through the direct communication channel. After receiving the signaling, the narrowband terminal first performs authorization verification on the initiator and matches the group ID before establishing a temporary group.

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