Method and device for preventing group updating message congestion of digital cluster system

Abstract

The invention discloses a method and a device used for preventing jamming of group updating message in a digital cluster system. The method comprises that a parameter is added to list items of a group information updating table, the parameter is a mark bit which is used for marking whether the push to talk movable terminal makes group information update; when the push to talk movable terminal needs to update information, the push to talk dispatch server starts the paging push to talk movable terminal to lead group information to be updated only when the number of the set mark bit in the list items of the group information updating table is smaller than the set group information update flow control threshold value; the push to talk dispatch server starts the paging, and sets correspondingly to the mark bit of the push to talk movable terminal; and when the update is over, the push to talk dispatch server cancels the set to the mark bit. The invention can limit business signal path resources occupied by concurrent updating of the group information; and by setting various threshold values to satisfy different requests of concrete networks, information jamming caused by group information update is effectively prevented.

Description

technical field [0001] The invention relates to the field of digital trunking systems, in particular to a method and device for preventing group update message congestion in the digital trunking system. Background technique [0002] like Figure 5 Shown is a schematic diagram of the basic composition and structure of the core network part of the digital trunking system. Among them, the digital trunking system core network 500 includes: PTT terminal MS501, PTT trunking dispatching client PDC (PTTDispatch Client) 502, PTT dispatching server PDS (PTT Dispatch Server) 503, and PTT home register PHR (PTT Home Register) 504. [0003] The PDS is the general control point of the trunking call, and completes the processing of the trunking scheduling call, including identifying trunking users, establishing various trunking calls, such as private calls and group calls, trunking PTT (Push-to-Talk, push-to-talk, using Half-duplex communication mode, only one person is allowed to own and...

AI Technical Summary

Problems solved by technology

However, the fatal shortcoming of this method is: if the PDC refuses to establish a traffic channel for this group information update, the group information update process cannot be carried out, and when the PDC can start a new group information update is unknown to the PDS Yes, if the PDS blindly starts the group information update process according to the set value of its cycle timer, it will increase the interaction between the PDS and the scheduling client PDC, making the process of a group information update more complicated, and also increasing the message collision possibility of

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