US 9,814,015 B2
Positioning method, positioning server, terminal and base station
Dengkun Xiao, Beijing (CN); Jie Cui, Beijing (CN); Anjian Li, Beijing (CN); Jing Han, Beijing (CN); Yuan He, Shenzhen (CN); and Tong Wu, Shenzhen (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen, Guangdong (CN)
Filed on Jul. 16, 2014, as Appl. No. 14/333,239.
Application 14/333,239 is a continuation of application No. PCT/CN2013/070501, filed on Jan. 16, 2013.
Claims priority of application No. 2012 1 0013759 (CN), filed on Jan. 16, 2012.
Prior Publication US 2014/0349677 A1, Nov. 27, 2014
Int. Cl. H04M 1/00 (2006.01); H04W 64/00 (2009.01); H04W 4/02 (2009.01); G01S 5/02 (2010.01); G01S 5/10 (2006.01)
CPC H04W 64/003 (2013.01) [G01S 5/0215 (2013.01); G01S 5/0221 (2013.01); G01S 5/0226 (2013.01); G01S 5/10 (2013.01); H04W 4/02 (2013.01); H04W 64/00 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A positioning method comprising:
exchanging, with a terminal, positioning capability information that the terminal supports performing a positioning measurement according to a plurality of radio access techniques (RATs);
determining a first RAT whose load is the lightest among the plurality of RATs;
sending allocation information to a base station, where the allocation information is (a) part of a message requesting the base station report a positioning reference signal (PRS) configuration or (b) a dedicated message sent before the message requesting the base station report the PRS configuration,
wherein the allocation information instructs the base station to (a) transmit the PRS to the terminal through the first RAT, and (b) adjust a configuration of the PRS by reducing a measured value of a reference signal of a cell pair when the measured value is greater than a threshold, where the cell pair is identified by cell subset information determined by the terminal;
receiving the configuration of the PRS fed back by the base station;
notifying the terminal of the configuration of the PRS;
receiving a reference signal time difference (RSTD) that is obtained by the terminal through measurement according to the configuration of the PRS; and
determining a location of the terminal according to the RSTD.