Method for transmitting backward control signaling by using control channel in DMR system

Abstract

The invention discloses a method for transmitting a backward control signaling by using a control channel in a digital mobile radio (DMR) system. The method is characterized by comprising the following steps of: adding a control channel time slot structure into the control channel in a complementary definition way; using a part of bits of originally transmitted payload information as the carried backward control signaling by the control channel time slot structure; and complementally defining added type fields of the control channel time slot structure by using a synchronous word which is consistent with downlink data so as to differentiate the type fields from the control information without carrying backward control signaling. By the method, the backward control information can be transmitted by using the control channel in an alignment mode of a DMR cluster communication system, so that a base station can realize backward control over a mobile station, and the base station can transmit a short broadcast signaling in the control channel without affecting the synchronization performance of the mobile station or interrupting the information transmission of a service channel while realizing the backward control.

Description

Technical field [0001] The present invention relates to a digital mobile radio (DMR) technology, in particular to a method of using a control channel to transmit reverse control signaling in an aligned mode, in particular to a method of using a control channel to transmit reverse control in a DMR system Method of signaling. Background technique [0002] As we all know, the DMR trunking communication system adopts TDMA technology based on 2 time slots, and each wireless carrier arranges 2 time slots on the uplink and downlink, each time slot is 30ms. Such as figure 2 As shown, the DMR air interface protocol divides the time slot into three main parts. The CACH part carries the control information shared by the downlink channel, which is called the common notification channel; the information payload part carries the voice and data payload; the shared signaling part carries Signaling information such as synchronization and embedded signaling. [0003] The DMR trunking communication...

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Problems solved by technology

[0014] The purpose of the present invention is to solve the problem that the current DMR system cannot adapt to the reverse control signaling transmission when the control channel and the traffic channel are transmitted synchronously, and to invent a DMR system that will neither affect the performance of the mobile station nor interrupt the service transmission. Method for transmitting reverse control signaling by using control channel in system

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