Patent ID: 9584972
Date: 2017-02-28
CPC Classifications: G01S,H04W

Claim:
1. A positioning method, comprising: sending, by a client, a position request instruction to at least three access points; receiving, by the client, a response message sent by each of the at least three access points in response to the request instruction; sending, by the client, a corresponding measurement report message to each of the at least three access points, such that each of the at least three access points obtains and sends a radio signal flight time between itself and the client according to the corresponding measurement report message to a network side; and receiving, by the client, a position estimation result from the network side, wherein the network side performs a comparative calculation on the radio signal flight time received from each of the at least three access points and a sampling time stored in a reference point database and measured in advance between each access point and each of multiple sampling points at sampling points located in area that includes each access point arranged in a non-collinear manner, and the position estimation result is an obtained coordinate location of a sampling point included in one of the sampling points whose corresponding sampling time that was stored in the reference point database has a minimum time difference between the radio signal flight time of each of the at least three access points and the stored sampling time of each of the multiple sampling points, and wherein the sampling time for each of the multiple sampling points includes a radio signal flight time between each of the multiple sampling points and each access point.