SPS activation method, base station and cluster communication system

Abstract

The invention provides an SPS activation method, a base station and a cluster communication system. The method comprises the following steps: a current base station in a current cell periodically sends an SPS activation command aiming at an established target group to the current cell in a preset first period of time and stops sending the SPS activation command after the first period of time; the current base station, according to a target group identifier carried in a switching request sent from an adjacent cell, adds UE switched from the adjacent cell to the current cell into the target group corresponding to the target group identifier; and the current base station periodically sends the SPS activation command to the current cell in a preset second period of time and stops sending the SPS activation command after the second period of time. According to the invention, the transmission frequency of the SPS activation command can be reduced, and time delay for accessing monitoring users to group services can be shortened.

Description

technical field [0001] The invention relates to an SPS activation method, a base station and a cluster communication system, and belongs to the technical field of long term evolution (Long Term Evolution, referred to as: LTE) private network cluster communication. Background technique [0002] In the LTE system, a new scheduling method—Semi-Persistent Scheduling (Semi-Persistent Scheduling, SPS for short) technology is introduced for Voice over IP (VoIP) services. The semi-persistent scheduling method means that during the scheduling transmission process of LTE, the base station (referred to as: eNB) instructs the user equipment (User Equipment, referred to as: UE) through the physical downlink control channel (Physical Downlink Control Channel, referred to as: PDCCH) during initial scheduling If the UE recognizes that the scheduling information is semi-persistent scheduling, it saves the current scheduling information and sends or receives the service data at the same time-...

AI Technical Summary

Problems solved by technology

[0005] However, the SPS activation command should be configured to be sent on the public search space, and the periodic and continuous transmission of the SPS activation command will occupy the already tight public search space, thereby causing the periodic SPS activation command to be compatible with the system information broadcast module message ( SI-RNTI), paging message (P-RNTI), public uplink power control command (TPC-PUCCH-RNTI, TPC-PUSCH-RNTI), uplink access message (RA-RNTI), etc. competing for the common search space

[0006] Moreover, if the sending frequency of the SPS activation command is too high, it will take up too much public search space; on the contrary, if the sending frequency of the SPS activation command is too small, it will prolong the time for listening to the user's access to the group service and affect the user's experience.

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