Non-coherent joint transmission hypothesis evaluation in multi-transmit receive point deployments
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may evaluate the plurality of hypotheses based at least in part on the set of power control offset ratios and on a set of evaluation metrics to select at least one of the plurality of hypotheses. Numerous other aspects are provided.
1 . A method of wireless communication performed by a user equipment (UE), comprising:
determining, for a set of hypotheses associated with a set of channel state information (CSI) reference signal (RS) resource pairs, a set of power control offset ratios; and
evaluating the set of hypotheses based at least in part on the set of power control offset ratios, wherein a power control offset ratio, of the set of power control offset ratios, includes a first component based at least in part on a physical downlink shared channel power of a first set of ports and a CSI RS power of a first resource and a second component based at least in part on a physical downlink shared channel power of a second set of ports and a CSI RS power of a second resource.
2 . The method of claim 1 , wherein evaluating the set of hypotheses comprises:
evaluating the set of hypotheses based at least in part on a set of evaluation metrics, wherein an evaluation metric, of the set of evaluations metrics, is based at least in part on at least one of a quantity of transmit receive points of a hypothesis corresponding to a particular power control offset ratio of the evaluation metric.
3 . The method of claim 1 , wherein the power control offset ratio, of the set of power control offset ratios, is based at least in part on a ratio of an other physical downlink shared channel power to a CSI RS power.
4 . The method of claim 3 , wherein the physical downlink shared channel power is based at least in part on a total physical downlink shared channel power of a set of physical downlink shared channel ports multiplexed onto a single carrier of a single orthogonal frequency division multiplexing symbol.
5 . The method of claim 3 , wherein the CSI RS power is based at least in part on a total energy of a set of CSI RS ports multiplexed onto a single subcarrier of a single orthogonal frequency division multiplexing symbol in a first resource, of a resource pair of the set of CSI RS resource pairs, and in a second resource of the resource pair.
6 . The method of claim 3 , wherein the CSI RS power is based at least in part on an average energy of a set of CSI RS ports multiplexed onto a single subcarrier of a single orthogonal frequency division multiplexing symbol in a first resource, of a resource pair of the set of CSI RS resource pairs, and in a second resource of the resource pair.
7 . The method of claim 1 , wherein a set of physical downlink shared channel ports in the first set of ports are multiplexed onto a carrier of an orthogonal frequency division multiplexing symbol on the first set of ports.
8 . The method of claim 1 , wherein the first set of ports corresponds to a first rank hypothesis in the first resource and the second set of ports corresponds to a second rank hypothesis in the second resource.
9 . The method of claim 1 , wherein the physical downlink shared channel power of the first set of ports is based at least in part on a total physical downlink shared channel power of a set of physical downlink shared channel ports in the first set of ports multiplexed onto a single carrier of a single orthogonal frequency division multiplexing symbol on the first set of ports, and
wherein the physical downlink shared channel power of the second set of ports is based at least in part on a total physical downlink shared channel power of a set of physical downlink shared channel ports in the second set of ports multiplexed onto the single carrier of the single orthogonal frequency division multiplexing symbol on the second set of ports.
10 . The method of claim 1 , wherein the CSI RS power of the first resource is based at least in part on a total energy of a set of CSI RS ports multiplexed onto a single subcarrier of a single orthogonal frequency division multiplexing symbol in a first resource, of a resource pair of the set of CSI RS resource pairs, and wherein the CSI RS power of the second resource is based at least in part on the total energy of the set of CSI RS ports multiplexed onto a single subcarrier of a single orthogonal frequency division multiplexing symbol in a second resource of the resource pair.
11 . The method of claim 1 , wherein power control offset ratios, of the set of power control offset ratios, are configured on a per hypothesis basis based at least in part on radio resource control signaling.
12 . The method of claim 1 , wherein power control offset ratios, of the set of power control offset ratios, are configured on a per CSI RS resource basis and based at least in part on a scaling factor.
13 . The method of claim 1 , further comprising:
transmitting one or more CSI reports based at least in part on evaluating the set of hypotheses.
14 . The method of claim 1 , wherein evaluating the set of hypotheses comprises:
evaluating the set of hypotheses to select at least one of the set of hypotheses.
15 . A user equipment (UE) for wireless communication, comprising:
one or more memories; and
one or more processors coupled to the one or more memories, the one or more memories and the one or more processors configured to:
determine, for a set of hypotheses associated with a set of channel state information (CSI) reference signal (RS) resource pairs, a set of power control offset ratios; and
evaluate the set of hypotheses based at least in part on the set of power control offset ratios to select at least one of the set of hypotheses, wherein a power control offset ratio, of the set of power control offset ratios, includes a first component based at least in part on a physical downlink shared channel power of a first set of ports and a CSI RS power of a first resource and a second component based at least in part on a physical downlink shared channel power of a second set of ports and a CSI RS power of a second resource.
16 . A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:
one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to:
determine, for a set of hypotheses associated with a set of channel state information (CSI) reference signal (RS) resource pairs, a set of power control offset ratios; and
evaluate the set of hypotheses based at least in part on the set of power control offset ratios, wherein a power control offset ratio, of the set of power control offset ratios, includes a first component based at least in part on a physical downlink shared channel power of a first set of ports and a CSI RS power of a first resource and a second component based at least in part on a physical downlink shared channel power of a second set of ports and a CSI RS power of a second resource.
17 . The non-transitory computer-readable medium of claim 16 , wherein a set of physical downlink shared channel ports in the first set of ports are multiplexed onto a carrier of an orthogonal frequency division multiplexing symbol on the first set of ports.
18 . The non-transitory computer-readable medium of claim 16 , wherein the first set of ports corresponds to a first rank hypothesis in the first resource and the second set of ports corresponds to a second rank hypothesis in the second resource.
19 . The non-transitory computer-readable medium of claim 16 , wherein the one or more instructions, that cause the UE to evaluate the set of hypotheses, cause the UE to:
evaluate the set of hypotheses to select at least one of the set of hypotheses.
20 . An apparatus for wireless communication, comprising:
means for determining, for a set of hypotheses associated with a set of channel state information (CSI) reference signal (RS) resource pairs, a set of power control offset ratios; and
means for evaluating the set of hypotheses based at least in part on the set of power control offset ratios, wherein a power control offset ratio, of the set of power control offset ratios, includes a first component based at least in part on a physical downlink shared channel power of a first set of ports and a CSI RS power of a first resource and a second component based at least in part on a physical downlink shared channel power of a second set of ports and a CSI RS power of a second resource.
21 . The apparatus of claim 20 , wherein a set of physical downlink shared channel ports in the first set of ports are multiplexed onto a carrier of an orthogonal frequency division multiplexing symbol on the first set of ports.
22 . The apparatus of claim 20 , wherein the first set of ports corresponds to a first rank hypothesis in the first resource and the second set of ports corresponds to a second rank hypothesis in the second resource.
23 . The apparatus of claim 20 , wherein the means for evaluating the set of hypotheses comprises:
means for evaluating the set of hypotheses to select at least one of the set of hypotheses.