Measurement reporting with delta values
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a first transmit-receive point (TRP), a first channel state information reference signal (CSI-RS) associated with the first TRP and a first beam. The UE may receive, from the first TRP or a second TRP, a second CSI-RS associated with the first TRP or the second TRP, wherein the second CSI-RS is associated with a second beam. The UE may transmit, to the first TRP or the second TRP, an indication of a delta value between a measurement of the first CSI-RS and a measurement of the second CSI-RS. Numerous other aspects are described.
1 . An apparatus for wireless communication at a user equipment (UE), comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, individually and collectively configured to cause the UE to:
receive a first channel state information reference signal (CSI-RS) associated with a first transmit receive point (TRP) and a first beam;
receive a second CSI-RS associated with a second TRP and a second beam; and
transmit an indication of a difference between a measurement of the first CSI-RS and a measurement of the second CSI-RS.
2 . The apparatus of claim 1 , wherein the first CSI-RS is received from the first TRP.
3 . The apparatus of claim 1 , wherein the second CSI-RS is received from the second TRP.
4 . The apparatus of claim 1 , wherein the indication is transmitted to a single TRP that is either the first TRP or the second TRP.
5 . The apparatus of claim 1 , wherein the one or more processors are individually and collectively configured to further cause the UE to:
transmit, to the first TRP, an indication of a measurement of the first CSI-RS.
6 . The apparatus of claim 5 , wherein a link associated with the first CSI-RS corresponds to a reference link, and the difference is relative to the measurement of the first CSI-RS associated with the reference link.
7 . The apparatus of claim 1 , wherein the difference between the measurement of the first CSI-RS and the measurement of the second CSI-RS is a difference between a reference signal received power (RSRP) associated with the first CSI-RS and an RSRP associated with the second CSI-RS.
8 . The apparatus of claim 1 , wherein the difference between the measurement of the first CSI-RS and the measurement of the second CSI-RS is:
a difference between a reference signal received quality (RSRQ) associated with the first CSI-RS and an RSRQ associated with the second CSI-RS,
a difference between a signal-to-interference-and-noise ratio (SINR) associated with the first CSI-RS and an SINR associated with the second CSI-RS,
a difference between a modulation and coding scheme (MCS) associated with the first CSI-RS and an MCS associated with the second CSI-RS, or
a difference between a log likelihood ratio (LLR) associated with the first CSI-RS and an LLR associated with the second CSI-RS.
9 . The apparatus of claim 1 , wherein the one or more processors are individually and collectively configured to further cause the UE to:
perform at least one of a measurement of the first CSI-RS or a measurement of the second CSI-RS.
10 . An apparatus for wireless communication at a network node, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, individually and collectively configured to cause the network node to:
transmit a first channel state information reference signal (CSI-RS) associated with a first transmit receive point (TRP) and a first beam;
transmit a second CSI-RS associated with a second TRP and a second beam; and
receive an indication of a difference between a measurement of the first CSI-RS and a measurement of the second CSI-RS.
11 . The apparatus of claim 10 , wherein the first CSI-RS is transmitted to the first TRP.
12 . The apparatus of claim 10 , wherein the second CSI-RS is transmitted to the second TRP.
13 . The apparatus of claim 10 , wherein the indication is received from a single TRP that is either the first TRP or the second TRP.
14 . The apparatus of claim 10 , wherein the one or more processors are individually and collectively configured to further cause the network node to:
receive an indication of a measurement of the first CSI-RS.
15 . The apparatus of claim 14 , wherein a link associated with the first CSI-RS corresponds to a reference link, and the difference is relative to the measurement of the first CSI-RS associated with the reference link.
16 . The apparatus of claim 10 , wherein the difference between the measurement of the first CSI-RS and the measurement of the second CSI-RS is a difference between a reference signal received power (RSRP) associated with the first CSI-RS and an RSRP associated with the second CSI-RS.
17 . The apparatus of claim 10 , wherein the difference between the measurement of the first CSI-RS and the measurement of the second CSI-RS is:
a difference between a reference signal received quality (RSRQ) associated with the first CSI-RS and an RSRQ associated with the second CSI-RS,
a difference between a signal-to-interference-and-noise ratio (SINR) associated with the first CSI-RS and an SINR associated with the second CSI-RS,
a difference between a modulation and coding scheme (MCS) associated with the first CSI-RS and an MCS associated with the second CSI-RS, or
a difference between a log likelihood ratio (LLR) associated with the first CSI-RS and an LLR associated with the second CSI-RS.
18 . A method for wireless communication performed at a user equipment (UE), comprising:
receiving a first channel state information reference signal (CSI-RS) associated with a first transmit receive point (TRP) and a first beam;
receiving a second CSI-RS associated with a second TRP and a second beam; and
transmitting an indication of a difference between a measurement of the first CSI-RS and a measurement of the second CSI-RS.
19 . The method of claim 18 , wherein the first CSI-RS is received from the first TRP.
20 . The method of claim 18 , wherein the second CSI-RS is received from the second TRP.
21 . The method of claim 18 , wherein the indication is transmitted to a single TRP that is either the first TRP or the second TRP.
22 . The method of claim 18 , further comprising transmitting an indication of a measurement of the first CSI-RS.
23 . The method of claim 18 , wherein a link associated with the first CSI-RS corresponds to a reference link, and the difference is relative to the measurement of the first CSI-RS associated with the reference link.
24 . The method of claim 18 , wherein the difference between the measurement of the first CSI-RS and the measurement of the second CSI-RS is a difference between a reference signal received power (RSRP) associated with the first CSI-RS and an RSRP associated with the second CSI-RS.
25 . The method of claim 18 , wherein the difference between the measurement of the first CSI-RS and the measurement of the second CSI-RS is:
a difference between a reference signal received quality (RSRQ) associated with the first CSI-RS and an RSRQ associated with the second CSI-RS,
a difference between a signal-to-interference-and-noise ratio (SINR) associated with the first CSI-RS and an SINR associated with the second CSI-RS,
a difference between a modulation and coding scheme (MCS) associated with the first CSI-RS and an MCS associated with the second CSI-RS, or
a difference between a log likelihood ratio (LLR) associated with the first CSI-RS and an LLR associated with the second CSI-RS.
26 . The method of claim 18 , further comprising:
performing at least one of a measurement of the first CSI-RS or a measurement of the second CSI-RS.
27 . A method for wireless communication performed at a network node, comprising:
transmitting a first channel state information reference signal (CSI-RS) associated with a first transmit receive point (TRP) and a first beam;
transmitting a second CSI-RS associated with a second TRP and a second beam; and
receiving an indication of a difference between a measurement of the first CSI-RS and a measurement of the second CSI-RS.
28 . The method of claim 27 , wherein the first CSI-RS is transmitted to the first TRP, wherein the second CSI-RS is transmitted to the second TRP, and wherein the indication is received from a single TRP that is either the first TRP or the second TRP.
29 . The method of claim 27 , wherein the difference between the measurement of the first CSI-RS and the measurement of the second CSI-RS is a difference between a reference signal received power (RSRP) associated with the first CSI-RS and an RSRP associated with the second CSI-RS.
30 . The method of claim 27 , wherein the difference between the measurement of the first CSI-RS and the measurement of the second CSI-RS is:
a difference between a reference signal received quality (RSRQ) associated with the first CSI-RS and an RSRQ associated with the second CSI-RS,
a difference between a signal-to-interference-and-noise ratio (SINR) associated with the first CSI-RS and an SINR associated with the second CSI-RS,
a difference between a modulation and coding scheme (MCS) associated with the first CSI-RS and an MCS associated with the second CSI-RS, or
a difference between a log likelihood ratio (LLR) associated with the first CSI-RS and an LLR associated with the second CSI-RS.