Method for realizing group calling roaming of group service

Abstract

This invention discloses a method to realize the colony service group call roam. The method includes following contents. Set a general group call register to store the colony information. The initial switching center receives the initial group call transmitted by the communication terminal, and requests the general group call register for colony information. The general group call register provides colony information to the initial switching center, which includes the identifying list of service switching center. The initial switching center receives the colony information. The initial switching center sends group call request to the service switching center corresponding service switch center identification, according to the received identifying list of service switching center. According to the invention, we can contrapose all group call service block stored in the general group call register to initiate group call to realize the group call roam. Because the general group call register concentratedly stores colony information, this invention can also achieve to concentratedly manage the group information.

Description

technical field [0001] The invention relates to a trunking service group call technology, in particular to a method for realizing trunking service group call roaming. Background technique [0002] With the rapid development of communication technology, the national security system, public security system, public health system, railway system, etc. need to apply a large number of trunking services. The most important feature of the trunking service is that it can be dispatched and group called. The dispatching function of the trunking service refers to calling a certain number of communication terminals at the same time, so that these communication terminals can talk at the same time; The terminal initiates calls and conducts simultaneous calls at the same time, so as to achieve the effect of "response to all calls". [0003] In the digital trunking system, services such as group call and multicast need to be widely used. For the characteristics of group calls and multicas...

AI Technical Summary

Problems solved by technology

[0005] In addition, since the GCR is set for each MSC, even for different groups, the group IDs (ID) stored in different GCRs are likely to be the same

When implementing group call roaming, the same group ID will be stored in the same GCR, which will lead to some unpredictable problems. For example, the MSC cannot correctly perform the group call service according to the group ID, so that the The group cannot perform the group call service

If a communication terminal with group call authority roams to another MSC, and the GCR corresponding to the MSC does not store the information of the group to which it belongs, the group call service cannot be performed.

[0006] In addition, since each MSC needs to set up GCR to store group information, the group information stored in each GCR is relatively independent, which increases the difficulty of group information management and cannot realize centralized management of group information

Group member information is stored in the Home Location Register (HLR). When performing a group call service, the MSC needs to query the HLR for group member rights, which increases the difficulty of group information management.

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