Higher-priority user upstream seizing method

Abstract

The method includes steps: (1) through up channel of group call in assigned up and down channel of group call, listeners send message in third layer to network side of cluster system; the message carries priority of listener; (2) receiving the message, network side of cluster system determines that priority of listener is higher than priority of speaker, releasing the dedicated up channel of group call assigned to speaker, and assigning a up channel of group call as dedicated up channel of group call to the listener; (3) through the assigned dedicated up channel of group call, the listener becoming as current speaker carried out speaking. The method can realize preempt up channel by user in high priority in cluster group.

Description

technical field [0001] The present invention relates to the technology of preempting uplink conversation in trunking wireless communication system, in particular to a method for uplink preemption of high-priority users. Background technique [0002] Trunking wireless communication system, hereinafter referred to as trunking system, is a relatively economical and flexible command and dispatch communication system developed in recent years, widely used in government agencies, energy transportation, airport terminals, industrial and mining enterprises, fire police, water conservancy and The military and other units are used to meet the needs of internal communication of each unit. [0003] The most basic service provided by the trunking system is the Voice Group Call Service (VGCS). VGCS allows a user to set up a call to a group of group users belonging to a given service area with the same group ID (ID), said service area consists of several mobile services switching center (...

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Problems solved by technology

[0020] It can be seen from the above scheme that although the prior art defines priority levels for different users in the trunking group, it also stipulates that users with high priority in the trunking group can preempt the uplink group call channel. However, when the trunking group When a high-priority user preempts the uplink group call channel, a preemption request should be initiated to the trunking system network side through the uplink group call channel on which the low-priority user is speaking, that is, the step 204 described above. The speech of the priority user is processed, and the received speech is processed and then sent to other users in the trunking group through the downlink group call channel, so the trunking system network side cannot receive and demodulate the high priority speech correctly at the same time. The preemption request signaling initiated by the user through the same uplink group call channel cannot realize the process of preempting the uplink group call channel by users with high priority in the group

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