Method for receiving reference signal for positioning by configuring zero power in wireless communication system and apparatus for supporting same
Various embodiments of the present disclosure relate to a next-generation wireless communication system for supporting a higher data transfer rate and the like beyond the 4th generation (4G) wireless communication system. According to various embodiments of the present disclosure, a method for transmitting/receiving a signal in a wireless communication system and an apparatus for supporting same can be provided.
1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
receiving information on a resource for a reference signal (RS) related to positioning of the UE;
receiving at least one first RS related to positioning of the UE based on the resource;
transmitting information requesting a zero-power configuration for at least a part of the at least one first RS; and
receiving at least one second RS related to positioning of the UE, wherein the at least one second RS is at least partially configured with zero power based on the information requesting the zero-power configuration,
wherein, in a same time period, the at least one second RS is configured with zero power in a first part of a frequency resource among the resource and is not configured with zero power in a second part of the frequency resource.
2. The method according to claim 1 ,
wherein each of the at least one first RS is received from each of at least one transmission point (TP), and
wherein the information requesting the zero-power configuration comprises information requesting a zero-power configuration for a RS received from at least a part of the at least one TP.
3. The method according to claim 2 , wherein a signal strength of the RS received from the at least part of the at least one TP is greater than signal strengths of RSs received from the at least one TP except for the at least part of the at least one TP.
4. The method according to claim 1 ,
wherein each of the at least one first RS is received based on (i) at least one resource and (ii) at least one resource set comprising the at least one resource,
wherein the information requesting the zero-power configuration comprises at least one of (i) information request a zero-power configuration for at least a part of the at least one resource or (ii) information requesting a zero-power configuration for at least a part of the at least one resource set, and
wherein each of the at least one resource is identified based on at least one of a resource identifier (ID) or a scrambling ID.
5. The method according to claim 1 , further comprising receiving information indicating that at least a part of the at least one second RS is configured with zero power,
wherein the information on the resource is received from a location management function (LMF) or a location server,
wherein the information requesting the zero-power configuration is transmitted to a transmission point (TP) transmitting the at least one first RS, and
wherein the information indicating that the at least part of the at least one second RS is configured with zero power is received from the TP by radio resource control (RRC) signaling, medium access control-control element (MAC-CE) signaling, or downlink control information (DCI).
6. The method according to claim 5 ,
wherein the information indicating that the at least part of the at least one second RS is configured with zero power comprises information indicating that the at least part of the at least one second RS is configured with zero power for a first time period,
wherein the information on the resource comprises information indicating the at least a part of the at least one second RS is configured with zero power for a second time period, and
wherein the first time period is shorter than the second time period.
7. The method according to claim 1 ,
wherein the at least one first RS is received in a plurality of time periods,
wherein each of the plurality of time periods comprises resource elements (REs) to which the at least one first RS is mapped, and
wherein a RS related to positioning of the UE is mapped to a part of REs included in at least one of the plurality of time periods and configured with zero power.
8. An apparatus operating in a wireless communication system, the apparatus comprising:
a memory; and
at least one processor coupled to the memory,
wherein the at least one processor is configured to:
receive information on a resource for a reference signal (RS) related to positioning of the apparatus;
receive at least one first RS related to positioning of the apparatus based on the resource;
transmit information requesting a zero-power configuration for at least a part of the at least one first RS; and
receive at least one second RS related to positioning of the apparatus, wherein the at least one second RS is at least partially configured with zero power based on the information requesting the zero-power configuration,
wherein, in a same time period, the at least one second RS is configured with zero power in a first part of a frequency resource among the resource and is not configured with zero power in a second part of the frequency resource.
9. The apparatus according to claim 8 ,
wherein each of the at least one first RS is received from each of at least one transmission point (TP), and
wherein the information requesting the zero-power configuration comprises information requesting a zero-power configuration for a RS received from at least a part of the at least one TP.
10. The apparatus according to claim 8 ,
wherein each of the at least one first RS is received based on (i) at least one resource and (ii) at least one resource set comprising the at least one resource,
wherein the information requesting the zero-power configuration comprises at least one of (i) information request a zero-power configuration for at least a part of the at least one resource or (ii) information requesting a zero-power configuration for at least a part of the at least one resource set, and
wherein each of the at least one resource is identified based on at least one of a resource identifier (ID) or a scrambling ID.
11. The apparatus according to claim 8 , wherein the apparatus communicates with at least one of a mobile terminal, a network, or an autonomous driving vehicle other than a vehicle comprising the apparatus.
12. A method performed by a base station (BS) in a wireless communication system, the method comprising:
receiving information on a resource for a reference signal (RS) related to positioning of a user equipment (UE);
transmitting at least one first RS related to positioning of the UE based on the resource;
receiving information requesting a zero-power configuration for at least a part of the at least one first RS; and
transmitting at least one second RS related to positioning of the UE, wherein the at least one second RS is at least partially configured with zero power based on the information requesting the zero-power configuration,
wherein, in a same time period, the at least one second RS is configured with zero power in a first part of a frequency resource among the resource and is not configured with zero power in a second part of the frequency resource.
13. An apparatus operating in a wireless communication system, the apparatus comprising:
a memory; and
at least one processor coupled to the memory,
wherein the at least one processor is configured to:
receive information on a resource for a reference signal (RS) related to positioning of a user equipment (UE);
transmit at least one first RS related to positioning of the UE based on the resource;
receive information requesting a zero-power configuration for at least a part of the at least one first RS; and
transmit at least one second RS related to positioning of the UE, wherein the at least one second RS is at least partially configured with zero power based on the information requesting the zero-power configuration,
wherein, in a same time period, the at least one second RS is configured with zero power in a first part of a frequency resource among the resource and is not configured with zero power in a second part of the frequency resource.
14. An apparatus operating in a wireless communication system, the apparatus comprising:
at least one processor; and
at least one memory storing at least one instruction causing the at least one processor to perform a method,
wherein the method comprises:
receiving information on a resource for a reference signal (RS) related to positioning of the apparatus;
receiving at least one first RS related to positioning of the apparatus based on the resource;
transmitting information requesting a zero-power configuration for at least a part of the at least one first RS; and
receiving at least one second RS related to positioning of the apparatus, wherein the at least one second RS is at least partially configured with zero power based on the information requesting the zero-power configuration,
wherein, in a same time period, the at least one second RS is configured with zero power in a first part of a frequency resource among the resource and is not configured with zero power in a second part of the frequency resource.
15. A non-transitory computer-readable storage medium storing at least one instruction causing at least one processor to perform a method,
wherein the method comprises:
receiving information on a resource for a reference signal (RS) related to positioning of a user equipment (UE);
receiving at least one first RS related to positioning of the UE based on the resource;
transmitting information requesting a zero-power configuration for at least a part of the at least one first RS; and
receiving at least one second RS related to positioning of the UE, wherein the at least one second RS is at least partially configured with zero power based on the information requesting the zero-power configuration,
wherein, in a same time period, the at least one second RS is configured with zero power in a first part of a frequency resource among the resource and is not configured with zero power in a second part of the frequency resource.