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    • 9. 发明申请
    • 一种用户面观测到达时间差定位方法
    • WO2009065260A1
    • 2009-05-28
    • PCT/CN2007/003315
    • 2007-11-23
    • 中兴通讯股份有限公司刘玉平李群
    • 刘玉平李群
    • H04Q7/22
    • H04W64/00G01S5/10
    • A locating method for the user plane to observe the reached time difference in the present invention comprises following steps: (a) a radio network controller sending observing reached time difference locating assistant information to a user equipment, the locating assistant information including frequency point and scrambling code of camping cell and relevant adjacent cell of the user equipment, and relevant adjacent cell list of user equipment camping cell, geographical position information of user equipment camping cell and relevant adjacent cell; (b) after the user equipment receiving a locating request from the core network locating control center, determining base station group to be measured according to the received locating assistant information and obtaining system frame number- system frame number observing time difference of several groups of base stations by measuring, the user equipment or the core network locating control center calculating the user device' geographical position according to the SFN-SFN observing time difference and the locating assistant information. With the present invention, locating information operation maintenance cost of the core network locating control center can be reduced more largely.