Method and device for measuring position using heterogeneous network signal in wireless access system
The present invention relates to a method of measuring the position of a terminal by using a heterogeneous network signal. The method comprises receiving transmission time information that represents a time at which a signal for measuring the position of a terminal is transmitted; receiving a first signal from a reference cell at a time represented by the transmission time information; receiving a second signal from a measurement cell at a time represented by the transmission time information; calculating the difference between the time at which the first signal is received and the time at which the second signal is received to generate measurement information; and reporting the measurement information.
1. A method for measuring a position of a User Equipment (UE) using a heterogeneous network signal in a Long Term Evolution (LTE) system, the method performed by the UE and comprising:
receiving transmission time information from a positioning server indicating times at which signals for measuring the position of the UE are transmitted;
receiving a first signal from a reference cell at a first time indicated by the transmission time information;
receiving a second signal from a measurement cell at a second time indicated by the transmission time information,
wherein at least the reference cell or the measurement cell is an Access Point (AP) that supports a heterogeneous network that is not a network for the LTE system;
generating measurement information by calculating a difference between the first time and the second time; and
transmitting the generated measurement information and AP information of the AP to an evolved Node B (eNB),
wherein a signal used in the heterogeneous network is a beacon preamble included in a beacon frame, and
wherein a signal used in the LTE system is a Positioning Reference Signal (PRS) transmitted from a cellular eNB.
2. The method of claim 1 , wherein the transmission time information is included in assistance data that contains the AP information.
3. The method of claim 1 , wherein:
the first signal is a heterogeneous network signal transmitted from a first AP corresponding to the reference cell; and
the second signal is a heterogeneous network signal transmitted from a second AP corresponding to the measurement cell.
4. The method of claim 3 , wherein each of the first and second signals is the beacon preamble.
5. The method of claim 1 , wherein the AP information includes an identifier indicating the AP and geographical position information of the AP.
6. The method of claim 1 , further comprising transmitting the generated measurement information and the AP information to the positioning server.
7. A user equipment (UE) generating measurement information using a heterogeneous network signal in a Long Term Evolution (LTE) system, the UE comprising:
a receiver configured to receive signals;
a transmitter configured to transmit signals; and
a processor operatively coupled to the receiver and the transmitter and configured to generate the measurement information by:
controlling the receiver to receive transmission time information from a positioning server indicating times at which signals for measuring the position of the UE are transmitted;
controlling the receiver to receive a first signal from a reference cell at a time indicated by the transmission time information;
controlling the receiver to receive a second signal from a measurement cell at a second time indicated by the transmission time information;
wherein at least the reference cell or the measurement cell is an Access Point (AP) that supports a heterogeneous network that is not a network for the LTE system,
generating the measurement information by calculating a difference between the first time and the second time; and
controlling the transmitter to transmit the generated measurement information and AP information of the AP to an evolved Node B (eNB),
wherein a signal used in the heterogeneous network is a beacon preamble included in a beacon frame, and
wherein a signal used in the LTE system is a Positioning Reference Signal (PRS) transmitted from a cellular eNB.
8. The UE of claim 7 , wherein the transmission time information is included in assistance data that contains the AP information.
9. The UE of claim 7 , wherein:
the first signal is a heterogeneous network signal transmitted from a first AP corresponding to the reference cell; and
the second signal is a heterogeneous network signal transmitted from a second AP corresponding to the measurement cell.
10. The UE of claim 9 , wherein each of the first and second signals is the beacon preamble.
11. The UE of claim 7 , wherein the AP information includes an identifier indicating the AP and geographical position information of the AP.
12. The UE of claim 7 , wherein the processor further controls the transmitter to transmit the generated measurement information and the AP information to the positioning server.