Method for transmitting and receiving signal in wireless communication system, and apparatus supporting same
Various embodiments of the present disclosure relate to a next generation wireless communication system supporting a higher data transmission rate than a 4th generation (4G) wireless communication system. According to various embodiments of the present disclosure, provided may be a method for transmitting and receiving a signal in a wireless communication system, and an apparatus supporting same.
1. A method performed by a user equipment (UE) comprising:
receiving first configuration information related to a reference signal (RS) resource for positioning;
receiving second configuration information including information configuring a report of measurements for the positioning,
wherein the second configuration information further includes confidence information;
acquiring a measurement for the positioning based on the first configuration information,
wherein the measurement includes reference signal time differences (RSTDs) for a first number of samples;
transmitting measurement information including the measurement including the RSTDs; and
transmitting quality information including information related to a quality of the measurement based on the second configuration information,
wherein the UE determines whether to further include information for the first number of samples in the quality information based on whether the first number is less than a threshold sample number determined by the confidence information, and
wherein, based on the first number being less than the threshold sample number, the quality information further includes the information for the first number.
2. The method according to claim 1 , wherein:
the confidence information in the second information includes at least one bit;
one of a plurality of predetermined confidences is instructed based on the at least one bit;
the at least one bit having a first value is mapped to a first confidence from among the plurality of predetermined confidences; and
the at least one bit having a second value is mapped to a second confidence from among the plurality of predetermined confidences.
3. The method according to claim 1 , wherein the confidence information in the second information includes:
a bit string having a size of 2 bits,
wherein
the bit string having a value of ‘00’ is mapped to a confidence of 80 percent,
the bit string having a value of ‘01’ is mapped to a confidence of 85 percent,
the bit string having a value of ‘10’ is mapped to a confidence of 90 percent, and
the bit string having a value of ‘11’ is mapped to a confidence of 95 percent.
4. The method according to claim 1 , wherein:
the quality of the measurement is an absolute quality of the measurement, and
the method further includes:
based on a state in which capability related to signaling overhead of the wireless communication system is less than a predetermined level,
(i) transmitting information related to a relative quality of the measurement based on the second configuration information; and
(ii) dropping transmission of information related to the absolute quality of the measurement.
5. The method according to claim 1 , wherein the information related to the relative quality of the measurement further includes at least one of:
(i) information about an average quality of a plurality of measurements that are obtained from a plurality of transmission points (TPs), a plurality of reference signal (RS) resource sets, or a plurality of RS resources;
(ii) information about an identifier (ID) of the transmission point (TP), an ID of the RS resource set, or an ID of the RS resource, which correspond to a measurement having an upper X percent or an upper Y percent from among the plurality of measurements obtained from the plurality of TPs, the plurality of RS resource sets, or the plurality of RS resources; or
(iii) information about IDs of the plurality of TPs, IDs of the plurality of RS resource sets, and IDs of the plurality of RS resources, that are sequentially arranged in a range from an ID of the transmission point (TP), an ID of the RS resource set, and an ID of the RS resource, each of which corresponds to a measurement having a best quality from among the plurality of measurements obtained from the plurality of TPs, the plurality of RS resource sets, or the plurality of RS resources, to an ID of the transmission point (TP), an ID of the RS resource set, and an ID of the RS resource, each of which corresponds to a measurement having a worst quality from among the plurality of obtained measurements,
wherein X is a natural number, and Y is a real number.
6. An apparatus operating in a wireless communication system comprising:
a memory; and
at least one processor connected to the memory,
wherein the at least one processor is configured to:
receive first configuration information related to a reference signal (RS) resource for positioning;
receive second configuration information including information configuring a report of measurements for the positioning,
wherein the second configuration information further includes confidence information;
acquire a measurement for the positioning based on the first configuration information,
wherein the measurement includes reference signal time differences (RSTDs) for a first number of samples;
transmit measurement information including the measurement including the RSTDs; and
transmit quality information including information related to a quality of the measurement based on the second configuration information,
wherein the UE determines whether to further include information for the first number of samples in the quality information based on whether the first number is less than a threshold sample number determined by the confidence information, and
wherein, based on the first number being less than the threshold sample number, the quality information further includes the information for the first number.
7. The apparatus according to claim 6 , wherein:
the confidence information in the second information includes at least one bit;
one of a plurality of predetermined confidences is instructed based on the at least one bit;
the at least one bit having a first value is mapped to a first confidence from among the plurality of predetermined confidences; and
the at least one bit having a second value is mapped to a second confidence from among the plurality of predetermined confidences.
8. The apparatus according to claim 6 , wherein the confidence information in the second information includes:
a bit string having a size of 2 bits,
wherein
the bit string having a value of ‘00’ is mapped to a confidence of 80 percent,
the bit string having a value of ‘01’ is mapped to a confidence of 85 percent,
the bit string having a value of ‘10’ is mapped to a confidence of 90 percent, and
the bit string having a value of ‘11’ is mapped to a confidence of 95 percent.
9. An apparatus operating in a wireless communication system comprising:
at least one processor; and
at least one memory configured to store instructions such that the at least one processor performs specific operations by executing the instructions,
wherein the specific operations include:
receiving first configuration information related to a reference signal (RS) resource for positioning;
receiving second configuration information including information configuring a report of measurements for the positioning,
wherein the second configuration information further includes confidence information;
acquiring a measurement for the positioning based on the first configuration information,
wherein the measurement includes reference signal time differences (RSTDs) for a first number of samples;
transmitting measurement information including the measurement including the RSTDs; and
transmitting quality information including information related to a quality of the measurement based on the second configuration information,
wherein the UE determines whether to further include information for the first number of samples in the quality information based on whether the first number is less than a threshold sample number determined by the confidence information, and
wherein, based on the first number being less than the threshold sample number, the quality information further includes the information for the first number.
10. A non-transitory computer-readable medium containing instructions for causing a processor to perform the method according to claim 1 .