Switching between polarization and spatial multiple-input-multiple-output based on a multiband antenna
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a first indication of a multiple-input-multiple-output (MIMO) configuration threshold that is associated with a selection between a polarization MIMO configuration and a spatial MIMO configuration, the MIMO configuration threshold being based at least in part on a performance threshold. The UE may receive a second indication of a MIMO communication configuration that specifies the selection. Numerous other aspects are described.
1 . An apparatus for wireless communication at a user equipment (UE), comprising:
a memory; and
one or more processors, coupled to the memory, the one or more processors individually or collectively configured to:
transmit a first indication of a multiple-input-multiple-output (MIMO) configuration threshold that is associated with a selection between a polarization MIMO configuration and a spatial MIMO configuration, the MIMO configuration threshold being based at least in part on a performance threshold;
receive a second indication of a MIMO communication configuration that specifies the selection;
obtain an updated MIMO configuration threshold based at least in part on a set of reference signals; and
transmit a third indication of the updated MIMO configuration threshold.
2 . The apparatus of claim 1 ,
wherein the one or more processors are further configured, individually or collectively, to:
transmit a third indication of the performance threshold.
3 . The apparatus of claim 2 , wherein the performance threshold includes at least one of:
a spectral efficiency performance threshold, or
a data rate performance threshold.
4 . The apparatus of claim 2 , wherein the performance threshold includes at least one of:
a polarization MIMO performance threshold, or
a spatial MIMO performance threshold.
5 . The apparatus of claim 1 ,
wherein the MIMO configuration threshold includes a frequency-dependent angular spread threshold that indicates a polarization MIMO performance based at least in part on a carrier frequency and an angular spread of a dominant cluster in a communication channel.
6 . The apparatus of claim 1 ,
wherein the MIMO configuration threshold includes a frequency-dependent angular spread threshold that indicates a spatial MIMO performance based at least in part on a carrier frequency and an angular spread of a dominant cluster in a communication channel.
7 . The apparatus of claim 1 ,
wherein the one or more processors, to transmit the first indication of the MIMO configuration threshold, are configured, individually or collectively, to:
transmit the first indication of the MIMO configuration threshold in UE capability information.
8 . The apparatus of claim 1 ,
wherein the apparatus is a first apparatus, and the one or more processors are further configured, individually or collectively, to:
communicate with a second apparatus based at least in part on the MIMO communication configuration.
9 . An apparatus for wireless communication at a network node, comprising:
a memory; and
one or more processors, coupled to the memory, the one or more processors individually or collectively configured to:
receive a first indication of a multiple-input-multiple-output (MIMO) configuration threshold that is associated with a selection between a polarized MIMO configuration and a spatial MIMO configuration, the MIMO configuration threshold being based at least in part on a performance threshold;
transmit a second indication of a MIMO communication configuration that specifies the selection;
receive a third indication of an updated MIMO configuration threshold; and
select an updated MIMO communication configuration based at least in part on the updated MIMO configuration threshold.
10 . The apparatus of claim 9 ,
wherein the one or more processors are further configured, individually or collectively, to:
perform the selection between the polarized MIMO configuration and the spatial MIMO configuration based at least in part on the MIMO configuration threshold.
11 . The apparatus of claim 10 ,
wherein the one or more processors, to perform the selection, are configured, individually or collectively, to:
perform the selection based at least in part on at least one of:
a carrier frequency, or
an angular spread.
12 . The apparatus of claim 9 ,
wherein the one or more processors are further configured, individually or collectively, to:
receive a third indication of the performance threshold.
13 . The apparatus of claim 12 , wherein the performance threshold includes at least one of:
a spectral efficiency performance threshold, or
a data rate performance threshold.
14 . The apparatus of claim 12 , wherein the performance threshold includes at least one of:
a polarized MIMO performance threshold, or
a spatial MIMO performance threshold.
15 . The apparatus of claim 9 ,
wherein the MIMO configuration threshold includes a frequency-dependent angular spread threshold that indicates a polarized MIMO performance based at least in part on a carrier frequency and an angular spread.
16 . The apparatus of claim 9 ,
wherein the MIMO configuration threshold includes a frequency-dependent angular spread threshold that indicates a spatial MIMO performance based at least in part on a carrier frequency and an angular spread.
17 . The apparatus of claim 9 ,
wherein the one or more processors, to receive the first indication of the MIMO configuration threshold, are configured, individually or collectively, to:
receive the first indication of the MIMO configuration threshold in user equipment (UE) capability information.
18 . The apparatus of claim 9 ,
wherein the one or more processors are further configured, individually or collectively, to:
communicate with a user equipment (UE) based at least in part on the MIMO communication configuration.
19 . A method of wireless communication performed by a user equipment (UE), comprising:
transmitting a first indication of a multiple-input-multiple-output (MIMO) configuration threshold that is associated with a selection between a polarization MIMO configuration and a spatial MIMO configuration, the MIMO configuration threshold being based at least in part on a performance threshold;
receiving a second indication of a MIMO communication configuration that specifies the selection;
obtaining an updated MIMO configuration threshold based at least in part on a set of reference signals; and
transmitting a third indication of the updated MIMO configuration threshold.
20 . The method of claim 19 , further comprising:
transmitting a third indication of the performance threshold.
21 . The method of claim 19 ,
wherein the MIMO configuration threshold includes a frequency-dependent angular spread threshold that indicates a polarization MIMO performance based at least in part on a carrier frequency and an angular spread of a dominant cluster in a communication channel.
22 . The method of claim 19 ,
wherein the MIMO configuration threshold includes a frequency-dependent angular spread threshold that indicates a spatial MIMO performance based at least in part on a carrier frequency and an angular spread of a dominant cluster a communication channel.
23 . A method of wireless communication performed by a network node, comprising:
receiving a first indication of a multiple-input-multiple-output (MIMO) configuration threshold that is associated with a selection between a polarized MIMO configuration and a spatial MIMO configuration, the MIMO configuration threshold being based at least in part on a performance threshold;
transmitting a second indication of a MIMO communication configuration that specifies the selection;
receiving a third indication of an updated MIMO configuration threshold; and
selecting an updated MIMO communication configuration based at least in part on the updated MIMO configuration threshold.
24 . The method of claim 23 , further comprising:
performing the selection between the polarized MIMO configuration and the spatial MIMO configuration based at least in part on the MIMO configuration threshold.
25 . The method of claim 24 , wherein performing the selection comprises:
performing the selection based at least in part on at least one of:
a carrier frequency, or
an angular spread.
26 . The method of claim 23 , further comprising:
receiving a third indication of the performance threshold.
27 . The method of claim 23 , wherein the MIMO configuration threshold includes at least one of:
a first frequency-dependent angular spread threshold that indicates a polarized MIMO performance based at least in part on a carrier frequency and an angular spread, or
a second frequency-dependent angular spread threshold that indicates a spatial MIMO performance based at least in part on the carrier frequency and the angular spread.
28 . The method of claim 23 ,
wherein the MIMO configuration threshold includes a frequency-dependent angular spread threshold that indicates a polarized MIMO performance based at least in part on a carrier frequency and an angular spread.
29 . The method of claim 23 ,
wherein the MIMO configuration threshold includes a frequency-dependent angular spread threshold that indicates a spatial MIMO performance based at least in part on a carrier frequency and an angular spread.
30 . The method of claim 23 , further comprising:
receiving the first indication of the MIMO configuration threshold in user equipment (UE) capability information.