A retransmission method in a cluster system

Abstract

The invention discloses a retransmission method in a cluster system, comprising: for a cluster user under a cell of a base station, the base station receives a measurement report reported by each monitoring terminal in the cluster user; wherein the monitoring terminal triggers a measurement report to be reported when the BLER of the GTCH channel is greater than a set BLER threshold value, and theBLER value and the cluster user identifier ID are carried in the corresponding measurement report; For the cell, the base station periodically counts the received measurement report and performs retransmission processing after the proportion of the monitoring terminals reporting the measurement report to all the monitoring terminals reaches a set threshold value; Wherein the monitoring terminal is a user terminal which currently accesses the cell and is not turned off. The application can improve the demodulation performance of the cluster service.

Description

technical field [0001] The present application relates to the retransmission technology in the communication system, in particular to a retransmission method in the trunking system. Background technique [0002] The LTE private network trunking system is mainly composed of three logical channels: GCCH, GTCH and GPCCH. The GCCH channel is mainly used to transmit the control plane data of the cluster users, the GTCH channel is mainly used to transmit the user plane data of the cluster users, and the GPCCH main channel mainly uses It is used to transmit the paging data of trunk users. [0003] For ordinary unicast services in the LTE system, the terminal can feed back the downlink channel quality to the base station, and the base station can perform retransmission processing according to the downlink channel quality fed back by the terminal. The combining gain brought by retransmission can improve the demodulation performance of downlink data, while The trunking service is a t...

AI Technical Summary

Problems solved by technology

[0003] For ordinary unicast services in the LTE system, the terminal can feed back the downlink channel quality to the base station, and the base station can perform retransmission processing according to the downlink channel quality fed back by the terminal. The combining gain brought by retransmission can improve the demodulation performance of downlink data, while The trunking service is a typical one-to-many broadcast service. The listening terminal is a passive receiver and will not feed back the downlink channel quality to the base station. The base station cannot perform retransmission processing according to the channel quality of the listening terminal, which ultimately affects the demodulation performance of the trunking service.

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