CN107027107B - Group calling merging method and conflict resolution method for cluster switching center - Google Patents
Group calling merging method and conflict resolution method for cluster switching center Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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Abstract
The invention discloses a group call merging method and a conflict resolution method for a cluster switching center. The incorporation method comprises the following steps: after the group call controller establishes the session C1 of the group a according to the group call request initiated by the user terminal, if some other switching center establishes the session C2 of the group a according to the group call request initiated by the user terminal and sends the call request to the group call controller, the group call controller stores the information of the session C2 in the session record information table of the group a, allocates resources to the call request, aggregates the media of the session C1 and the session C2, and replies the merging success information to the switching center sending the call request. The invention can combine the conversations of a plurality of switching centers calling the same group into one conversation, thereby ensuring the smooth communication of emergency command.
Description
Technical Field
The invention relates to the technical field of trunking communication, in particular to a group call merging method and a conflict resolution method for a trunking switching center.
Background
The trunking communication system is an advanced mobile scheduling system, and represents the development direction of a private mobile communication network, which is one of communication systems. The trunking communication system has the function of sharing available channels for all users of the system and automatically selecting channels, and is a multipurpose and high-performance wireless dispatching communication system for sharing resources, sharing cost, sharing channel equipment and services. Since the digital trunking communication system has the advantages of large system capacity, high frequency utilization rate, various functions and the like, the digital trunking communication system is currently the mainstream technology in the field of trunking communication.
In the PDT cluster system, the group call is initiated in a certain exchange center area to respond immediately so as to ensure the timeliness of the call. At present, when a plurality of switching centers have calls to the same group, the sessions established by the switching centers cannot be combined in one call, which brings great inconvenience to communication command.
Disclosure of Invention
the invention aims to overcome the technical problem that the sessions established by all switching centers cannot be combined in one session when a plurality of switching centers of the conventional trunking communication system call the same group, and provides a group call combining method and a conflict solution for the trunking switching centers.
In order to solve the problems, the invention adopts the following technical scheme:
The invention discloses a group call merging method of a cluster switching center, which comprises the following steps:
After the group call controller establishes a session C1 of the group a according to the group call request initiated by the user terminal, if some other switching center establishes a session C2 of the group a according to the group call request initiated by the user terminal and sends the call request to the group call controller, the group call controller stores the information of the session C2 in the session record information table of the group a, allocates resources to the call request, aggregates the media of the session C1 and the session C2, and replies a merging success message to the switching center sending the call request;
when a user terminal of a session C1 initiates a PTT application speech, the user terminal applying for speech sends a speech request to a group call controller, the speech request carries session information of a session C1, after receiving the speech request, the group call controller replies confirmation information to the user terminal applying for speech, and simultaneously, the group call controller sends a user speech message of a session C1 to a switching center where other sessions recorded in a group A session record information table are located;
When the user terminal of the session C2 initiates a PTT application for a talk, the user terminal applying for a talk sends a talk request to the group call controller, the talk request carries the session information of the session C2, after receiving the talk request, the group call controller replies confirmation information to the user terminal applying for a talk, and at the same time, the group call controller sends the user talk message of the session C2 to the switching center where the other sessions recorded in the group a session record information table are located.
In the technical scheme, the group call session of the group A is established in the group call controller, a session C1 is established at the group call controller, and the session record information table of the group A stores the information of the session C1. When other switching centers establish the session C2 and initiate a Call request To the group A, the group Call controller finds that the session C1 with the same group number exists, the group Call controller accepts the Call request, stores the information (including information such as Call-ID, From, To, etc.) of the session C2 in the session record information table of the group A, allocates resources To the Call request, aggregates the media of the session C1 and the session C2, and replies an integration success message To the switching center sending the Call request.
When a user terminal of the session C1 initiates a PTT (push to talk) request to speak, the user terminal applying for speaking sends a request to the group call controller, the request carries session information of the session C1, after receiving the request, the group call controller replies confirmation information to the user terminal applying for speaking, and at the same time, the group call controller sends a user speaking message of the session C1 (the speaking message carries session information of a corresponding session receiver) to a switching center where other sessions recorded in the group a session record information table are located, and voice is sent from the session C1 to other incorporated sessions through the group call controller.
when the user terminal of the conversation C2 initiates the PTT application speaking, the user terminal applying for speaking sends a speaking request to the group calling controller, the speaking request carries the conversation information of the conversation C2, after receiving the speaking request, the group calling controller replies confirmation information to the user terminal applying for speaking, and at the same time, the group calling controller sends the user speaking information of the conversation C2 (the speaking information carries the conversation information of the conversation C1) to the switching center of other conversation recorded in the group A conversation recording information table
preferably, when the initiating party of the session C2 sends a disconnect request to the group call controller, the group call controller tears down the session C2 and releases the corresponding resources.
Preferably, when the initiator of session C1 sends a disconnect request to the group call controller, the group call controller tears down all sessions in group a and releases all resources.
The invention discloses a conflict solution method for group call merging of a trunking switching center, which is used for the group call merging method of the trunking switching center and comprises the following steps: when the group calling controller and other exchange center initiate group calling to group A, if the group calling controller finds that the exchange center initiating group calling is the called exchange center which is calling, the group calling controller refuses the group calling of the called exchange center, the called exchange center deletes the group calling request and waits for the group calling of the group calling controller.
The group application group is merged into the group because at this time, for the group call controller and the other switching center, the group call controller and the other switching center do not receive the response of the other party. If the merging process is directly adopted, the group calling establishes two session channels between the group calling controller and the other switching center, and when the processing is improper, the voice and PTT applications can circularly come and go between the group calling controller and the other switching center. If only one session channel is reserved, a trade-off must be made that one party abandons the call and waits for the other party to be merged in.
the invention discloses a conflict solution method for group call merging of a trunking switching center, which is used for the group call merging method of the trunking switching center and comprises the following steps: when the switching center with Session C2 sends a call request for group A to the group call controller, if the group call controller finds that Session C2 already exists in group A, the group call controller releases the original Session C2 in group A and re-incorporates Session C2 into the group call for group A.
The method for merging the new session C2 into the group a is performed according to the group call merging method of the trunking switching center, and the end user does not perceive the merging of the group.
The invention has the beneficial effects that: the conversation of a plurality of switching centers calling the same group can be combined into one conversation, and smooth emergency command communication is guaranteed.
drawings
FIG. 1 is a flow chart of a group call merging operation of the present invention;
FIG. 2 is a workflow diagram of conflict resolution of the present invention;
FIG. 3 is a workflow diagram of conflict resolution of the present invention.
Detailed Description
the technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
example (b): the group call merging method for the trunking switching center of the embodiment comprises the following steps:
after the group call controller establishes a session C1 of the group a according to the group call request initiated by the user terminal, if some other switching center establishes a session C2 of the group a according to the group call request initiated by the user terminal and sends the call request to the group call controller, the group call controller stores the information of the session C2 in the session record information table of the group a, allocates resources to the call request, aggregates the media of the session C1 and the session C2, and replies a merging success message to the switching center sending the call request;
When a user terminal of a session C1 initiates a PTT application speech, the user terminal applying for speech sends a speech request to a group call controller, the speech request carries session information of a session C1, after receiving the speech request, the group call controller replies confirmation information to the user terminal applying for speech, and simultaneously, the group call controller sends a user speech message of a session C1 to a switching center where other sessions recorded in a group A session record information table are located;
When the user terminal of the session C2 initiates a PTT application for a talk, the user terminal applying for a talk sends a talk request to the group call controller, the talk request carries the session information of the session C2, after receiving the talk request, the group call controller replies confirmation information to the user terminal applying for a talk, and at the same time, the group call controller sends the user talk message of the session C2 to the switching center where the other sessions recorded in the group a session record information table are located.
When the initiating direction of the session C2 sends a disconnection request to the group call controller, the group call controller removes the session C2 and releases corresponding resources; when the initiator of session C1 sends a disconnect request to the group call controller, the group call controller tears down all sessions in group a and releases all resources.
The group call session of group A is established in the group call controller, a session C1 is established in the group call controller, and the session record information table of group A stores the information of session C1. When other switching centers establish the session C2 and initiate a Call request To the group A, the group Call controller finds that the session C1 with the same group number exists, the group Call controller accepts the Call request, stores the information (including information such as Call-ID, From, To, etc.) of the session C2 in the session record information table of the group A, allocates resources To the Call request, aggregates the media of the session C1 and the session C2, and replies an integration success message To the switching center sending the Call request.
when a user terminal of the session C1 initiates a PTT (push to talk) request to speak, the user terminal applying for speaking sends a request to the group call controller, the request carries session information of the session C1, after receiving the request, the group call controller replies confirmation information to the user terminal applying for speaking, and at the same time, the group call controller sends a user speaking message of the session C1 (the speaking message carries session information of a corresponding session receiver) to a switching center where other sessions recorded in the group a session record information table are located, and voice is sent from the session C1 to other incorporated sessions through the group call controller.
When the user terminal of the session C2 initiates a PTT application for a talk, the user terminal applying for a talk sends a talk request to the group call controller, the talk request carries the session information of the session C2, after receiving the talk request, the group call controller replies confirmation information to the user terminal applying for a talk, and at the same time, the group call controller sends a user talk message of the session C2 (the talk message carries the session information of the session C1) to the switching center where other sessions are recorded in the group a session record information table.
For example: as shown in fig. 1, a user terminal in the range of the group call controller GHMSC initiates a group call to group a through the base station BS1, and establishes a session C1 of group a. Then, the user terminal in the range of the switching center VMSC2 initiates the group call to the group a through the base station BS2, establishes the session C2 of the group a, the group call controller stores the information of the session C2 in the session record information table of the group a, allocates resources to the call request, aggregates the media of the session C1 and the session C2, and replies the merging success information to the switching center VMSC2 (200). User terminals in the range of the switching center VMSC3 initiate group calling for the group A through the base station BS3, a session C3 of the group A is established, the group calling controller stores the information of the session C3 in a session record information table of the group A, resources are allocated to the calling request, media of the session C1, the session C2 and the session C3 are converged, and merging success information is replied to the switching center VMSC3 (200).
When a user terminal initiates a PTT application for speaking through the base station BS3, the base station BS3 sends a speaking request (UPDATE) to the group call controller, the speaking request (UPDATE) carries the session information of the session C3, after receiving the speaking request (UPDATE), the group call controller replies confirmation information (200) to the base station BS3, and simultaneously, the group call controller sends a user speaking message of the session C1 to the user in the session C1 and the switching center VMSC 2.
The conflict resolution method for group call merging in the trunking switching center of the embodiment is used for the group call merging method in the trunking switching center, and comprises the following steps: when the group calling controller and other exchange center initiate group calling to group A, if the group calling controller finds that the exchange center initiating group calling is the called exchange center which is calling, the group calling controller refuses the group calling of the called exchange center, the called exchange center deletes the group calling request and waits for the group calling of the group calling controller.
The group application group is merged into the group because at this time, for the group call controller and the other switching center, the group call controller and the other switching center do not receive the response of the other party. If the merging process is directly adopted, the group calling establishes two session channels between the group calling controller and the other switching center, and when the processing is improper, the voice and PTT applications can circularly come and go between the group calling controller and the other switching center. If only one session channel is reserved, a trade-off must be made that one party abandons the call and waits for the other party to be merged in.
For example: as shown in fig. 2, the base station BS1 in the range of the group call controller GHMSC and the base station BS2 in the range of the switching center VMSC2 initiate a group call to the group a at the same time, and neither the group call controller GHMSC nor the switching center VMSC2 has received the response from the other party. At this time, the group call controller GHMSC finds that the switching center VMSC2 is the called switching center that it is calling, the group call controller GHMSC sends rejection information (486) to reject the group call of the switching center VMSC2, and the switching center VMSC2 deletes the group call request and waits for the group call of the group call controller GHMSC.
The conflict resolution method for group call merging in the trunking switching center of the embodiment is used for the group call merging method in the trunking switching center, and comprises the following steps: when the switching center with Session C2 sends a call request for group A to the group call controller, if the group call controller finds that Session C2 already exists in group A, the group call controller releases the original Session C2 in group A and re-incorporates Session C2 into the group call for group A.
The method for merging the new session C2 into the group a is performed according to the group call merging method of the trunking switching center, and the end user does not perceive the merging of the group.
For example: as shown in fig. 3, when the switching center VMSC2 with session C2 sends a call request for group a to the group call controller, if the group call controller finds that session C2 already exists in group a and the switching center VMSC2 has responded, the group call controller releases the original session C2 in group a and merges session C2 into the group call of group a again according to the normal merge flow.
Claims (5)
1. A group call merging method of a cluster switching center is characterized by comprising the following steps:
After the group call controller establishes a session C1 of the group a according to the group call request initiated by the user terminal, if some other switching center establishes a session C2 of the group a according to the group call request initiated by other user terminals and sends the call request to the group call controller, the group call controller stores the information of the session C2 in the session record information table of the group a, allocates resources to the call request, aggregates the media of the session C1 and the session C2, and replies a merging success message to the switching center sending the call request;
When a user terminal of a session C1 initiates a push-to-talk (PTT) application talk, the user terminal applying for talk sends a talk request to a group call controller, the talk request carries session information of the session C1, after receiving the talk request, the group call controller replies confirmation information to the user terminal applying for talk, and simultaneously, the group call controller sends a user talk message of the session C1 to a switching center where other sessions recorded in a group A session record information table are located;
When a user terminal of the session C2 initiates a push-to-talk (PTT) application talk, the user terminal applying for talk sends a talk request to the group call controller, the talk request carries session information of the session C2, after receiving the talk request, the group call controller replies confirmation information to the user terminal applying for talk, and simultaneously, the group call controller sends a user talk message of the session C2 to a switching center where other sessions recorded in a group A session record information table are located.
2. The group call merging method of claim 1, further comprising the steps of: when the user terminal of session C2 sends a disconnect request to the group call controller, the group call controller tears down session C2 and releases the corresponding resources.
3. The group call merging method of claim 1, further comprising the steps of: when the user terminal of session C1 sends a disconnect request to the group call controller, the group call controller tears down all sessions in group a, releasing all resources.
4. A method for resolving conflict of group call merging in trunking switching center, which is used in the group call merging method in trunking switching center of claim 1, and comprises the following steps: when the group calling controller and other exchange center initiate group calling to group A, if the group calling controller finds that the exchange center initiating group calling is the called exchange center which is calling, the group calling controller refuses the group calling of the called exchange center, the called exchange center deletes the group calling request and waits for the group calling of the group calling controller.
5. A method for resolving conflict of group call merging in trunking switching center, which is used in the group call merging method in trunking switching center of claim 1, and comprises the following steps: when the switching center with the new session C2 sends a call request for group A to the group call controller, if the group call controller finds that the original session C2 already exists in group A, the group call controller releases the original session C2 in group A and re-incorporates the new session C2 into the group call of group A.
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| CN110225469B (en) * | 2018-03-01 | 2022-03-01 | 成都鼎桥通信技术有限公司 | Group call information processing method, device and system |
| CN111614851B (en) * | 2020-05-26 | 2021-03-30 | 成都零壹众科技有限公司 | Intelligent cluster scheduling command system, event processing method and scheduling command method |
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Effective date of registration: 20240105 Address after: 621000 No.8 Mintai Road, Youxian District, Mianyang City, Sichuan Province Patentee after: SICHUAN HAIGE HENGTONG PRIVATE NETWORK TECHNOLOGY CO.,LTD. Address before: 310053 5th floor, building 8, high tech software park, No. 1 Weiye Road, Binjiang District, Hangzhou, Zhejiang Province Patentee before: HANGZHOU ACTEC COMMUNICATION TECHNOLOGY CO.,LTD. |