Method and device using observed time difference of arrival for positioning mobile station

A method using an observed time difference of arrival for positioning a mobile station, comprising:

• receiving an observed time difference of arrival (OTDOA) capability request message, transmitted by a positioning server, 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.
• selecting a communication system format supported by the mobile station from the plurality of communication system formats;
• transmitting to the positioning server an OTDOA support capability message, wherein the OTDOA support capability message comprises the communication system format supported by the mobile station and corresponding signal reception quality;
• receiving auxiliary positioning information sent by the positioning server;
• and
• reporting a corresponding measurement result based on the auxiliary positioning information, so that the positioning server uses the measurement result to position the mobile station.

A positioning server using an observed time difference of arrival for positioning a mobile station, comprising:

• a capability inquiry module, configured to transmit to a 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;
• a capability reception module, configured to receive 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;
• an auxiliary information sending module, configured to send 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
• a positioning module, configured to use the measurement result to position the mobile station.

A mobile station using an observed time difference of arrival for positioning, comprising:

• a capability inquiry reception module, configured to receive an observed time difference of arrival (OTDOA) capability request message, transmitted by a positioning server, wherein the OTDOA capability request message comprises a plurality of communication formats present in a current service area of the mobile station and corresponding signal reception quality information;
• a system format selection module, configured to select a communication system format supported by the mobile station from the plurality of communication system formats;
• a capability reporting module, configured to transmit to the positioning server an OTDOA support capability message, wherein the OTDOA support capability message comprises the communication system format supported by the mobile station and corresponding signal reception quality;
• an auxiliary information reception module, configured to receive auxiliary positioning information sent by the positioning server;
• a measurement result reporting module, configured to report a corresponding measurement result based on the auxiliary positioning information, so that the positioning server uses the measurement result to position the mobile station.