Title: Method for improving up synchronous transmission accuracy in TD SCDMA
Application Number: 200610144949 Application Date: 2006.11.24
Publication Number: 1949693 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04J3/06;H04B7/26
Applicant(s) Name: Beijing Zhongxing Microelectronics Co., Ltd. Address:
Inventor(s) Name: Guo Wei
Attorney & Agent: zhangdai
Abstract:
    The invention discloses a method of improving uplink synchronous transmission accuracy in TD-SCDMA system, comprising the steps of: (1) terminal estimates space transmission path loss according to the received base station-transmitted downlink pilot frequency time gap or first common control physical channel power, and calculates space delay value according to the path loss; (2) the terminal extracts the pre-measured terminal hardware delay value stored inside, and transmits uplink pilot frequency time gap to the base station by using the sum of the terminal hardware delay value and the space transmission delay value as advanced time. Thus, it can assure the base station can accurately receive uplink pilot frequency time gap, improving uplink synchronous transmission accuracy in the TD-SCDMA system.
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