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41. 发明申请

WO2021086363A1 PING-PONG-BASED ACCURATE POSITIONING 审中-公开
公开(公告)号：WO2021086363A1
公开(公告)日：2021-05-06
申请号：PCT/US2019/059054
申请日：2019-10-31
申请人： NOKIA TECHNOLOGIES OY , NOKIA OF AMERICA CORPORATION
发明人： ZIRWAS, Wolfgang , MICHALOPOULOS, Diomidis , SAILY, Mikko
IPC分类号： H04W64/00 , G01S5/02
摘要： In a first aspect of the present disclosure, a method includes receiving reference signals from at least one network node; sending at least one parameter relating to a measured channel impulse response back to the at least one network node; and repeating the receiving of reference signals and the sending of the at least one parameter relating to the measured channel impulse response M times for calculation of M single-trip intervals or N round-trip intervals, M and N being integers. In a second aspect of the present disclosure, a method includes transmitting reference signals to a network entity B from a network entity A, wherein network entity A and network entity B are each one of a network node and a user equipment; receiving a measured channel impulse response back from the network entity B after a first round-trip time interval; sending the channel impulse response back to the network entity B; receiving the channel impulse response back from the network entity B after a second round-trip time interval; repeating the preceding sending and receiving to record N round-trip time intervals, N being an integer; calculating a total time for the N round-trip intervals; and dividing the total time by N to obtain an estimate of a single round-trip time more accurate by a factor of 2N.

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