Search method and device of base station identification code

Abstract

The embodiment of the invention discloses search method and device of a base station identification code, relating to the field of communication and solving the problem that an MS (Main Storage) can be used for locking an FCCH (Frequency Correction Channel) frame after convoluting on eleven successive IDLE frames and takes longer time for locking the FCCH frame, so that the time for the MS to acquire a BSIC (Base Station Identification Code) is long. The technical scheme comprises the following steps of: acquiring a signal received by the IDEL frame; acquiring the convolution energy of the signal received by the IDLE frame and a preset sequence; determining the signal received by the IDLE frame as a signal transmitted by the base station on the FCCH frame if the convolution energy of the signal received by the IDLE frame and the preset sequence is greater than a preset first threshold; and acquiring a signal transmitted by the base station on a synchronous channel (SCH) frame according to the signal which is received by the IDLE frame and transmitted by the base station on the FCCH frame and acquiring the BSIC from the signals transmitted by the base station on the SCH frame. The search method and device provided by the embodiment of the invention can be applied to quick establishment of adjacent cells.

Description

technical field [0001] The invention relates to the communication field, in particular to a search method and device for a base station identification code. Background technique [0002] When the mobile terminal (Mobile Station, MS) is in the voice or data transmission service state, it needs to verify the base station identity code (Base Station Identity Code, BSIC) of the neighboring cell every 10 to 30 seconds. If the BSIC verification fails, the MS needs to verify the The BSIC search is performed on the cell that fails the BSIC verification, or, if the MS obtains the frequency point of a new cell, it needs to perform the BSIC search on the new cell. [0003] The MS search method for BSIC provided by the prior art is: the MS obtains the signal transmitted by the base station on the idle (IDLE) frame under the GSM / GPRS dedicated state, and convolutes the signal with a preset sequence, and performs convolution on the continuous 11 After the convolution is performed on the ...

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a search method and device for a base station identification code to solve the problem in the prior art that an MS needs to perform convolution on 11 consecutive IDLE frames before it can lock the FCCH frame, and it takes a long time to lock the FCCH frame, resulting in The problem that MS takes too long to obtain BSIC

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