Method for receiving reference signal in wireless communication system and apparatus therefor
A method for receiving a reference signal for defining a location in a wireless communication system according to one embodiment of the present invention comprises the steps of: receiving, from a serving cell, beacon-positioning reference signal (B-PRS) configuration information transmitted by at least one beacon device; and detecting the B-PRS by using the B-PRS configuration information, wherein the B-PRS configuration information includes B-PRS group configuration information for at least one beacon device group, and the B-PRS group configuration information can include parameters for generating sequences of the B-PRS transmitted by each beacon device belonging to the corresponding group.
1. A method for receiving beacon-positioning reference signals (B-PRSs) for determining position in a wireless communication system, by a terminal, the method comprising:
receiving, from a serving cell, B-PRS configuration information transmitted by one or more beacon apparatuses;
detecting B-PRSs based on the B-PRS configuration information; and
measuring, by the terminal, reference signal received power (RSRP) for the B-PRSs based on the B-PRS configuration information,
wherein the B-PRS configuration information comprises B-PRS group configuration information about one or more beacon apparatus groups, and measurement information, and
wherein the B-PRS group configuration information comprises a parameter for generating a sequence of B-PRSs, transmitted by each beacon apparatus belonging to a corresponding one of the one or more beacon apparatus groups.
2. The method according to claim 1 , wherein the parameter indicates a subframe used for each of the beacon apparatuses to transmit a B-PRS.
3. The method according to claim 1 , wherein the parameter indicates a frequency shift value used for resource mapping allowing each of the beacon apparatuses to transmit a B-PRS.
4. The method according to claim 1 , wherein the parameter indicates an offset value to determine a subframe used for each of the beacon apparatuses to transmit a B-PRS.
5. The method according to claim 1 , wherein the parameter indicates a resource block used for each of the beacon apparatuses to transmit a B-PRS.
6. The method according to claim 1 , wherein when the RSRP is measured,
calculating a path loss value for the B-PRSs based on the RSRP; and
triggering a specific event when the calculated path loss value is less than or equal to a threshold.
7. A terminal configured to receive beacon-positioning reference signals (B-PRSs) for determining position in a wireless communication system, the terminal comprising:
a receiver and transmitter; and
a processor, operatively coupled to the receiver and transmitter, wherein the processor is configured to:
control the receiver to receive, from a serving cell, B-PRS configuration information transmitted by one or more beacon apparatuses,
detect B-PRSs based on the B-PRS configuration information; and
measure reference signal received power (RSRP) for the B-PRSs based on the B-PRS configuration information,
wherein the B-PRS configuration information comprises B-PRS group configuration information, about one or more beacon apparatus groups, and measurement information, and
wherein the B-PRS group configuration information comprises a parameter, for generating a sequence of B-PRSs transmitted by each beacon apparatus belonging to a corresponding one of the one or more beacon apparatus groups.
8. The terminal according to claim 7 , wherein the parameter indicates a subframe used for each of the beacon apparatuses to transmit a B-PRS.
9. The terminal according to claim 7 , wherein the parameter indicates a frequency shift value used for resource mapping allowing each of the beacon apparatuses to transmit a B-PRS.
10. The terminal according to claim 7 , wherein the parameter indicates an offset value to determine a subframe used for each of the beacon apparatuses to transmit a B-PRS.
11. The terminal according to claim 7 , wherein the parameter indicates a resource block used for each of the beacon apparatuses to transmit a B-PRS.
12. The terminal according to claim 7 , wherein the processor is further configured to:
calculate a path loss value for the B-PRSs based on the RSRP, when the RSRP is measured; and
trigger a specific event when the calculated path loss value is less than or equal to a threshold.