Patent ID: 9572127
Date: 2017-02-14
CPC Classifications: G01S,H04B,H04W

Claim:
1. A method using an observed time difference of arrival for positioning a mobile station, comprising: receiving, by a positioning server, from a mobility management entity (MME), a request for positioning a mobile station; transmitting, by the positioning server, to the mobile station an observed time difference of arrival (OTDOA) capability request message to inquire about a communication system format supported by the mobile station and signal reception quality information of each base station of a communication system supported, wherein the OTDOA capability request message comprises a plurality of communication formats existent in a current service area of the mobile station and corresponding signal reception quality information, provided for the mobile station to select based on the communication system format supported by the mobile station; receiving, by a positioning server, an OTDOA support capability message returned by the mobile station, wherein the OTDOA support capability message comprises the communication system format supported by the mobile station and corresponding signal reception quality; sending, by a positioning server, to the mobile station auxiliary positioning information based on the communication system format supported by the mobile station and the corresponding signal reception quality, so that the mobile station reports a corresponding measurement result based on the auxiliary positioning information; and positioning, by a positioning server, the mobile station using the measurement result.