Method for reducing power consumption of user equipment and user equipment

Abstract

The embodiment of the invention provides a method for reducing power consumption of user equipment and the user equipment. The method comprises the steps that when the UE carries out same-frequency neighborhood search, the UE obtains timed deviation marks corresponding to same-frequency frequency points, and whether a plurality of cells corresponding to the same-frequency frequency points are synchronous cells or not is determined according to the time deviation marks; if the cells are synchronous cells, the UE receives signals of the serving cells in preset time in a search period, and a radio frequency working unit of the UE is shut down during the time, except the preset time, in the search period, wherein the preset time is the subframe or an orthogonal frequency division duplex OFDM symbol where a main synchronizing signal and an auxiliary synchronizing signal are located. Due to the fact that only when the UE receives the signals in the search period, is the radio frequency working unit started, and the radio frequency working unit is shut down at other moments, the starting time of the radio frequency working unit of the UE can be shortened, and power consumption of the UE is reduced.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a method for reducing power consumption of user equipment and user equipment. Background technique [0002] In the Long Term Evolution (LTE for short), the user equipment (User Equipment, UE for short) uses the Primary Synchronization Signal (PSS for short) and the Secondary Synchronization Signal (SSS for short) to complete the neighbor synchronization. Area search, adjacent cell search includes same-frequency adjacent cell search and inter-frequency adjacent cell search. Each cell will send PSS and SSS every cycle, such as 5ms. Specifically, in a frequency division duplex (Frequency Division Duplexing, FDD) system, each cell sends PSS at the 0th and 5th subframes, and time division duplexing (Time Division Duplexing) In the Duplexing (TDD for short) system, each cell sends the PSS in the 1st and 6th subframes, and no matter the FDD system or the TDD syste...

AI Technical Summary

Problems solved by technology

[0003] During discontinuous reception (DRX for short), the UE also needs to perform the same-frequency neighbor cell search or the different-frequency neighbor cell search. In the prior art, the UE needs to receive at least the entire 5ms data when performing the neighbor cell search, that is to say The UE needs to receive at least 5 subframes of data, where each subframe is 1ms, and receiving 5ms of data means that the radio frequency working unit (transceiver) of the UE must be turned on for at least 5ms, and the radio frequency working unit occupies a large part of the DRX standby power consumption of the UE. A large ratio, resulting in an increase in the standby power consumption of the UE

In fact, PSS and SSS signals are only carried in some subframes, so the existing receiving method will cause waste in some scenarios

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