A method for sending late-entry signaling in a tdma mobile communication system

Abstract

The invention relates to a method for sending late-entry signaling in a TDMA mobile communication system. The steps are as follows: 1) a base station device independently bears a downlink control channel through a time slot in a multi-slot frame; 2) sends the current call on the downlink control channel Group link control signaling. The method for the mobile station to receive the late entry signaling is as follows: A) the mobile station monitors the downlink control channel and receives the link control signaling; B) joins the session according to the configuration of the link control signaling. Using a new multi-slot frame structure, the downlink control channel is independently carried on its fixed time slot. Other mobile stations in the group only need to monitor the downlink control channel on the fixed time slot, and can obtain signaling configuration without monitoring multiple channels. information, the access delay is short, and the processing is simple. Other regular business time slots in the frame can all be used to transmit business data, with high channel utilization and large capacity.

Description

technical field [0001] The present invention relates to a method for late entry of a group call, in particular to a method for sending late entry signaling in a TDMA mobile communication system. Background technique [0002] Among the existing narrowband digital intercom standards, the DMR (Digital Mobile Radio: Digital Mobile Radio) standard proposed by ETSI (European Telecommunications Standards Institute) is a relatively mature standard that supports large-area networking , using a carrier width of 12.5KHz and a frame length of 60ms. like figure 1 As shown, one frame includes 2 time slots, which can support 2 channels of voice communication, and the capacity is doubled compared with the traditional analog intercom system. [0003] For the DMR system, voice transmission adopts the way of super frame. like figure 2 As shown, six wireless frames form a superframe, and in each frame, a synchronization sequence or control signaling can be embedded for synchronization dete...

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Problems solved by technology

[0012] But it still has some deficiencies: it only gives the technical enlightenment that "the call notification is sent on the public signaling channel and the channel occupied by the trunking terminal set by the call", and does not improve the signaling acquisition method of the prior art. The information configuration still adopts the method of embedded signaling, which is sent through superframe

When multiple channels in the system have services at the same time, the mobile station still needs to detect multiple channels at the same time to determine whether it is in the ongoing talk group because the late signaling of different channels is embedded in the corresponding channel. Increases the processing complexity of the mobile station

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