User equipment assisted synchronization mode of base stations

Abstract

The invention provides user equipment (UE) assisted synchronization mode of base stations. The synchronization mode comprises the following steps: step 1, the UE receives a signal of a non-service base station besides a service base station, and reports that a stronger interference indication exists to the service base station; step 2, the base station sends out a synchronization report indication to the UE after receiving the stronger interference indication reported by the UE; step 3, the UE receives the synchronization report indication, demodulates a synchronization channel of the non-service base station, measures a synchronization difference and reports to the service base station; and step 4, the service base station carries out synchronization adjustment according to the reported synchronization difference information. According to the synchronization mode, the synchronization of base stations is realized trough the assistance of the UE; the synchronism of base stations at adjacent areas is guaranteed effectively; shortages in uniform external clock synchronization and idle port synchronization are compensated; and synchronization impossibilities caused by limit and shielding in deploying fields and other reasons are reduced.

Description

technical field [0001] The present invention relates to the field of synchronization between base stations, in particular to an inter-base station synchronization method assisted by user equipment (UE). Background technique [0002] With the rapid growth of the wireless communication market, the requirements for synchronization methods between base stations are also diverse. Synchronization methods mainly include system clock synchronization and air frame synchronization. Among them, system clock synchronization refers to the synchronization (bit timing) of the internal operating clocks of all devices, and air frame synchronization refers to the synchronization of frame signals communicated between base stations ( frame timing). Air frame synchronization technology is to synchronize the occupied receiving and sending time slots, thereby reducing interference, improving coverage quality, and increasing frequency utilization. Base station synchronization is based on clock sy...

AI Technical Summary

Problems solved by technology

However, due to the limitations of deployment scenarios, the external clock sometimes cannot provide synchronization services well, resulting in unstable synchronization between base stations, and sometimes it cannot be synchronized; with the development of wireless communication research, it is proposed to use air interface synchronization between base stations to provide Great way to synchronize between base stations

However, in actual deployment, due to occlusion and other reasons, the air interface synchronization between base stations cannot be carried out well, so there are still large loopholes in the synchronization between cells, and the synchronization between base stations cannot be fully realized

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