Method for calculating a time delay introduced by

专利名称：Method for calculating a time delay

introduced by a repeater in mobilecommunication network

发明人：Lee, Young-Sik c/o Samsung Electronics Co.,

Ltd.

申请号：EP04021620.2申请日：20040910公开号：EP1528405A3公开日：20060830

专利附图：

摘要：A method for determination of a repeater time delay in a mobile

communication network, without affecting a correct positioning of a mobile terminal, isdisclosed. The method includes the steps of determining an initial estimated position of amobile communication terminal to be measured its position, estimating a respectivedistance between a serving base station and an adjacent base station and the mobileterminal using the initial estimated position, estimating a time difference of arrival of aserving base station signal and an adjacent base station signal received by the mobileterminal using the estimated distances, receiving the time difference of I arrival of theserving base station signal and the adjacent base station signal measured from themobile terminal, calculating a difference between the estimated time difference of arrivaland the measured time difference of arrival, and determining the difference as a repeatertime delay existing in the serving base station of the mobile terminal, if said difference islarger than a predetermined threshold value. The present invention makes it possible toestimate in advance the clock error in the terminal owing to the repeater time delay inAGPS system, so it can provide the terminal with more precise Acquisition AssistanceInformation (AAI). Further, such estimation of clock errors in the mobile terminal makes itpossible to prevent the failure in acquisition of GPS signals that may occur due to thesignificant deflection error in the clock operation of the mobile terminal.

申请人：SAMSUNG ELECTRONICS CO., LTD.

地址：416 Maetan-dong, Yeongtong-gu Suwon-si, Gyeonggi-do KR

国籍：KR

代理机构：Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät

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