Group call service processing method and system of a broadband trunking communication system

Abstract

The invention provides a group call service processing method of a broadband cluster communication system. The method comprises that when a group call is established but a downlink data packet of the group call is not received, a gateway sends first group call data loss information including the group number and identification of the group call to a mobility management entity (MME); if response information back fed by the MME is not received, resources of the group call of the gateway are released; and if the response information back fed by the MME is received, whether to release the resources of the group call is determined according to the received the response information of the MME. According to the method, the group call is established, whether the gateway includes downlink data of the group call is monitored, signaling interaction with the MME and an SCC is made when there is not downlink data of the group call, whether the group call is normal is determined, and a resource release mechanism is triggered when the group call is abnormal; and thus, bandwidth resources and internal resources of logical network elements are saved effectively. The invention also relates to a group call service processing system of the broadband cluster communication system.

Description

technical field [0001] The invention relates to a group call service processing method and system of a broadband trunking communication system. Background technique [0002] The trunking communication system is a dedicated wireless communication system developed to meet the command and dispatch needs of industry users and is oriented to specific industry applications. In the system, a large number of wireless users share a small number of wireless channels, and the main application is command and dispatch. It is a multi-purpose, high-efficiency wireless communication system. The trunking communication system has a wide range of application markets in the fields of government departments, public safety, emergency communications, electric power, civil aviation, petrochemical and military. [0003] Entering the 21st century, with the rapid development of economy and science and technology, the mobile Internet has undergone earth-shaking changes, and the application of the clus...

AI Technical Summary

Problems solved by technology

[0006] 1. The group call uplink data SCC (switching control center) has received and forwarded, but the xGW has not received the group call downlink data (there is a group call context between the SCC and xGW), and the channel between the xGW and the SCC may be broken (Ta interface The user plane is blocked))

[0007] 2. The Ta interface control plane message is transmitted through udp, and the group call release message sent by the SCC to the MME may be lost, causing the MME and the resources related to the group call in the xGW to hang up (resources hang up in the eNB as well), and then the xGW does not Group call downlink data (since SCC has no group call context)

[0008] 3. UDP is used for transmission between MME and xGW. After a group call ends, MME sends a group call resource release request to all network elements in the network, but the group call release message sent by MME to xGW may be lost. At this time, the MME releases the group call resources here. Generally, the eNB, UE (User Equipment, user equipment), and SCC where the group call is located also release the group call resources. Only the xGW does not Releasing the group call resources here will cause the group call related resources in xGW to hang up, and then show that xGW has no group call downlink data (because SCC has no group call context)

[0013] All of the above shortcomings will lead to abnormal services, and the called party will never be able to hear the data sent by the user with the right to speak, resulting in poor user experience.

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