Trans-pilot-frequency cell mobility scheme realizing no downstream data loss of group calling terminal

Abstract

The invention discloses a trans-pilot-frequency cell mobility scheme realizing no downstream data loss of group calling terminal. The scheme includes that an access network configures a measurement threshold established for triggering RRC connection for the group calling terminal and the terminal triggers an RRC connection establishing process after meeting the measurement threshold; after the group calling terminal implements the establishing of the RRC connection, the access network configures a pilot frequency measurement GAP according to a group mark of a group calling UE and the group calling terminal uses the pilot frequency measurement GAP for pilot frequency measurement; the access network triggers the ground calling terminal to switch to a target pilot frequency cell if pilot frequency switching conditions are met. According to the invention, through the arrangement of the measurement threshold and the triggering of the establishment of the RRC connection after that the terminal meets the measurement threshold is judged, pilot frequency measurement of the group calling terminal is realized. Thus, the group calling terminal is triggered to switch to the target pilot frequency cell after the access network meets the pilot frequency switching conditions. Therefore, pilot frequency GAP measurement and switching in group calls area realized and downstream data loss of the terminal is avoided and data transmission reliability is kept.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method for inter-frequency handover of trunking group calls in an LTE broadband trunking system. Background technique [0002] The trunking system is an efficient wireless communication system that supports a large number of wireless users for group communication with a small number of wireless channels by sharing wireless channels. [0003] With the rapid development of wireless LTE broadband technology, a broadband trunking system based on LTE broadband technology has emerged as the times require. Broadband LTE technology provides a larger channel capacity for the trunking system, thereby providing strong support for the trunking system to realize broadband trunking service scheduling. . [0004] In the actual commercial scenario of the LTE broadband trunking system, due to frequency planning or network planning, there will be cases where two adjacent areas use ...

AI Technical Summary

Problems solved by technology

[0012] Another object of the present invention is to provide a mobile solution across inter-frequency cells that realizes no downlink data loss for group call terminals. This method can effectively solve the problems of inter-frequency handover of UEs without RRC connections and shared channel data that cannot be received, and improve stability of use

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