Increased angle of departure measurement granularity
Disclosed are techniques for wireless communication. In an aspect, a receiving entity (RE), e.g., a user equipment or base station, receives a positioning resource beam configuration that defines a set of positioning resources, each positioning resource being transmitted by a transmission/reception point (TRP) at different times using different beams, each of the different beams having a set of beam characteristics that differs from the set of beam characteristics of another of the different beams in at least one beam characteristic. The RE performs positioning measurements on the different beams at the different times, at least based on the sets of beam characteristics, and sends positioning information to the TRP, the positioning information comprising at least some of the positioning measurements, a positioning estimate, or combinations thereof.
1 . A method of wireless communication performed by a receiving entity, the method comprising:
receiving a positioning resource beam configuration that defines a set of positioning resources, each positioning resource being transmitted by a transmission/reception point (TRP) at different times using different beams, each of the different beams having a set of beam characteristics that differs from the set of beam characteristics of another of the different beams in at least one beam characteristic, the positioning resource beam configuration also comprising an azimuth angle offset that specifies how, for each positioning resource in the set of positioning resources, an azimuth angle of the positioning resource changes between a first transmission of that positioning resource and a subsequent transmission of that positioning resource;
performing positioning measurements on the different beams at the different times, at least based on the sets of beam characteristics; and
sending positioning information to the TRP, the positioning information comprising at least some of the positioning measurements, a positioning estimate, or combinations thereof.
2 . The method of claim 1 , wherein the positioning resource beam configuration also comprises a departure angle of elevation offset, a relative transmission power offset, a half-power angle offset, a beam width offset, or combinations thereof.
3 . The method of claim 1 , wherein the set of positioning resources comprises at least one of a downlink (DL) positioning resource, an uplink (UL) positioning resource, a sidelink (SL) positioning resource, a channel state information reference signal (CSI-RS), or a demodulation reference signal (DMRS).
4 . The method of claim 1 , wherein the positioning resource beam configuration defines, for each positioning resource, the set of beam characteristics for each beam.
5 . The method of claim 1 , wherein the positioning resource beam configuration defines, for each positioning resource, a first set of beam characteristics for one of the different beams and at least one offset to be applied to at least one characteristic in the first set of beam characteristics to calculate a second set of beam characteristics for another of the different beams.
6 . The method of claim 5 , wherein the at least one offset is the same for each positioning resource in the set of positioning resources or wherein the at least one offset for one positioning resource in the set of positioning resources is different from the at least one offset for another positioning resource in the set of positioning resources.
7 . The method of claim 5 , wherein the at least one offset comprises one offset and wherein, for multiple repetitions, in an i th repetition, a value of (i−1)*(the offset) is applied to the at least one characteristic in the first set of beam characteristics to calculate the at least one characteristic in the set of beam characteristics for an i th beam.
8 . The method of claim 5 , wherein the at least one offset comprises two offsets, one offset for each of two characteristics.
9 . The method of claim 8 , wherein performing positioning measurements on the different beams at the different times comprises keeping one offset constant while modifying the other offset for each successive beam measurement or modifying both offsets for each successive beam measurement.
10 . The method of claim 8 , wherein the two offsets comprise an azimuth angle offset and an elevation angle offset.
11 . The method of claim 1 , wherein the positioning information comprises at least one of a reference signal received power (RSRP) measurement, a time of arrival (ToA) measurement, a quality of service (QoS) measurement, or an angle of departure (AoD).
12 . A method of wireless communication performed by a transmission/reception point (TRP), the method comprising:
sending, to a receiving entity, a positioning resource beam configuration that defines a set of positioning resources, each positioning resource being transmitted by the TRP at different times using different beams, each of the different beams having a set of beam characteristics that differs from the set of beam characteristics of another of the different beams in at least one beam characteristic, the positioning resource beam configuration also comprising an azimuth angle offset that specifies how, for each positioning resource in the set of positioning resources, an azimuth angle of the positioning resource changes between a first transmission of that positioning resource and a subsequent transmission of that positioning resource;
transmitting the set of positioning resources according to the positioning resource beam configuration; and
receiving positioning information from the receiving entity, the positioning information comprising measurements of at least some of the positioning resources, a positioning estimate, or combinations thereof.
13 . The method of claim 12 , wherein the positioning resource beam configuration also comprises a departure angle of elevation offset, a relative transmission power offset, a half-power angle offset, a beam width offset, or combinations thereof.
14 . The method of claim 12 , wherein the set of positioning resources comprises at least one of a downlink (DL) positioning resource, an uplink (UL) positioning resource, a sidelink (SL) positioning resource, a channel state information reference signal (CSI-RS), or a demodulation reference signal (DMRS).
15 . The method of claim 12 , wherein the positioning resource beam configuration defines, for each positioning resource, the set of beam characteristics for each beam.
16 . The method of claim 12 , wherein the positioning resource beam configuration defines, for each positioning resource, a first set of beam characteristics for one of the different beams and at least one offset to be applied to at least one characteristic in the first set of beam characteristics to calculate a second set of beam characteristics for another of the different beams.
17 . The method of claim 16 , wherein the at least one offset is the same for each positioning resource in the set of positioning resources or wherein the at least one offset for one positioning resource in the set of positioning resources is different from the at least one offset for another positioning resource in the set of positioning resources.
18 . The method of claim 16 , wherein the at least one offset comprises one offset and wherein, for multiple repetitions, in an i th repetition, a value of (i−1)*(the offset) is applied to the at least one characteristic in the first set of beam characteristics to calculate the at least one characteristic in the set of beam characteristics for an i th beam.
19 . The method of claim 12 , wherein the at least one offset comprises two offsets, one offset for each of two characteristics.
20 . The method of claim 19 , wherein transmitting the set of positioning resources according to the positioning resource beam configuration comprises keeping one offset constant while modifying the other offset for each successive beam transmission or modifying both offsets for each successive beam transmission.
21 . The method of claim 19 , wherein the two offsets comprise an azimuth angle offset and an elevation angle offset.
22 . The method of claim 12 , wherein the positioning information comprises at least one of a reference signal received power (RSRP) measurement, a time of arrival (ToA) measurement, a quality of service (QoS) measurement, or an angle of departure (AoD).
23 . A receiving entity (RE), comprising:
a memory;
at least one transceiver; and
at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor configured to:
receive a positioning resource beam configuration that defines a set of positioning resources, each positioning resource being transmitted by a transmission/reception point (TRP) at different times using different beams, each of the different beams having a set of beam characteristics that differs from the set of beam characteristics of another of the different beams in at least one beam characteristic, the positioning resource beam configuration also comprising an azimuth angle offset that specifies how, for each positioning resource in the set of positioning resources, an azimuth angle of the positioning resource changes between a first transmission of that positioning resource and a subsequent transmission of that positioning resource;
perform positioning measurements on the different beams at the different times, at least based on the sets of beam characteristics; and
send positioning information to the TRP, the positioning information comprising at least some of the positioning measurements, a positioning estimate, or combinations thereof.
24 . The RE of claim 23 , wherein the positioning resource beam configuration also comprises a departure angle of elevation offset, a relative transmission power offset, a half-power angle offset, a beam width offset, or combinations thereof.
25 . The RE of claim 23 , wherein the set of positioning resources comprises at least one of a downlink (DL) positioning resource, an uplink (UL) positioning resource, a sidelink (SL) positioning resource, a channel state information reference signal (CSI-RS), or a demodulation reference signal (DMRS).
26 . The RE of claim 23 , wherein the positioning resource beam configuration defines, for each positioning resource, the set of beam characteristics for each beam.
27 . The RE of claim 23 , wherein the positioning resource beam configuration defines, for each positioning resource, a first set of beam characteristics for one of the different beams and at least one offset to be applied to at least one characteristic in the first set of beam characteristics to calculate a second set of beam characteristics for another of the different beams.
28 . The RE of claim 27 , wherein the at least one offset is the same for each positioning resource in the set of positioning resources or wherein the at least one offset for one positioning resource in the set of positioning resources is different from the at least one offset for another positioning resource in the set of positioning resources.
29 . The RE of claim 27 , wherein the at least one offset comprises one offset and wherein, for multiple repetitions, in an i th repetition, a value of (i−1)*(the offset) is applied to the at least one characteristic in the first set of beam characteristics to calculate the at least one characteristic in the set of beam characteristics for an i th beam.
30 . The RE of claim 27 , wherein the at least one offset comprises an azimuth angle offset and an elevation angle offset.
31 . The RE of claim 23 , wherein the positioning information comprises at least one of a reference signal received power (RSRP) measurement, a time of arrival (ToA) measurement, a quality of service (QoS) measurement, or an angle of departure (AoD).
32 . A transmission/reception point (TRP), comprising:
a memory;
at least one transceiver; and
at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor configured to:
send, to a receiving entity, a positioning resource beam configuration that defines a set of positioning resources, each positioning resource being transmitted by the TRP at different times using different beams, each of the different beams having a set of beam characteristics that differs from the set of beam characteristics of another of the different beams in at least one beam characteristic, the positioning resource beam configuration also comprising an azimuth angle offset that specifies how, for each positioning resource in the set of positioning resources, an azimuth angle of the positioning resource changes between a first transmission of that positioning resource and a subsequent transmission of that positioning resource;
transmit the set of positioning resources according to the positioning resource beam configuration; and
receive positioning information from the receiving entity, the positioning information comprising measurements of at least some of the positioning resources, a positioning estimate, or combinations thereof.
33 . The TRP of claim 32 , wherein the positioning resource beam configuration also comprises a departure angle of elevation offset, a relative transmission power offset, a half-power angle offset, a beam width offset, or combinations thereof.
34 . The TRP of claim 32 , wherein the set of positioning resources comprises at least one of a downlink (DL) positioning resource, an uplink (UL) positioning resource, a sidelink (SL) positioning resource, a channel state information reference signal (CSI-RS), or a demodulation reference signal (DMRS).
35 . The TRP of claim 32 , wherein the positioning resource beam configuration defines, for each positioning resource, the set of beam characteristics for each beam.
36 . The TRP of claim 32 , wherein the positioning resource beam configuration defines, for each positioning resource, a first set of beam characteristics for one of the different beams and at least one offset to be applied to at least one characteristic in the first set of beam characteristics to calculate a second set of beam characteristics for another of the different beams.
37 . The TRP of claim 36 , wherein the at least one offset is the same for each positioning resource in the set of positioning resources or wherein the at least one offset for one positioning resource in the set of positioning resources is different from the at least one offset for another positioning resource in the set of positioning resources.
38 . The TRP of claim 36 , wherein the at least one offset comprises one offset and wherein, for multiple repetitions, in an i th repetition, a value of (i−1)*(the offset) is applied to the at least one characteristic in the first set of beam characteristics to calculate the at least one characteristic in the set of beam characteristics for an i th beam.
39 . The TRP of claim 36 , wherein the at least one offset comprises an azimuth angle offset and an elevation angle offset.
40 . The TRP of claim 32 , wherein the positioning information comprises at least one of a reference signal received power (RSRP) measurement, a time of arrival (ToA) measurement, a quality of service (QoS) measurement, or an angle of departure (AoD).