US 2026/0214488 A1Published application

Csi reporting by user device of a number of beams of network nodes in a joint transmission

AssigneeLenovo (Singapore) Pte. Ltd.

InventorsAHMED HINDY, VIJAY NANGIA

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Abstract

Various aspects of the present disclosure relate to devices and methods for simultaneous transmissions of channel state information (CSI) reference signals (RS) by base stations (BSs) at remote locations in a coordination cluster. The BSs correspond to a set of channel measurement resource (CMR) segments of a CMR. A user equipment (UE) receives the set and beam combinations of numbers of beams for each BS of the set along with pre-determined uplink resources corresponding to uplink control information (UCI) and channel-based CSI report size. The size is based on a count of the set of CMR segments and the respective number of beams for each BS. The UE selects a subset of the set and one beam combination, adjusting mismatches in a generated CSI report to match the predetermined resources. The BS is aware of the adjustments based on configuration of the UE and/or uplink indications by the UE.

Claims20

Dependent claims

A user equipment (UE) for wireless communication, the UE comprising:

at least one memory;
and
at least one processor communicatively coupled to the at least one memory and configured to cause the UE to:
receive, from at least one base station, a first configuration message that configures the UE to perform channel measurements over a set of channel state information (CSI) reference signal (RS) resources;
receive, in the first configuration message, two or more beam combinations, each beam combination assigning a respective value of a number of beams associated with each CSI-RS resource;
select, based on reception capabilities of the UE and the channel measurements over the set of CSI-RS resources, (i) a subset of the set of the CSI-RS resources and (ii) a selected beam combination of the two or more beam combinations;
adjust the number of beams corresponding to the selected beam combination, based on the selection of the subset of the set of the CSI-RS resources and a value corresponding to the selected beam combination of the two or more beam combinations;
generate a CSI report that includes:
(i) a first part having a first indication of the subset and a second indication of a selected beam combination of the two or more beam combinations;
and (ii) a second part containing CSI corresponding to the subset of the set of CSI-RS resources;
and
report the CSI report via the transceiver to the at least one base station.

9 more elements

A controller for wireless communication, the controller comprising:

at least one processor coupled with at least one memory and configured to cause the controller to:
receive, from at least one base station, a first configuration message that configures the UE to perform channel measurements over a set of channel state information (CSI) reference signal (RS) resources;
receive, in the first configuration message, two or more beam combinations, each beam combination assigning a respective value of a number of beams associated with each CSI-RS resource;
select, based on reception capabilities of the UE and the channel measurements over the set of CSI-RS resources, (i) a subset of the set of the CSI-RS resources and (ii) a selected beam combination of the two or more beam combinations;
adjust the number of beams corresponding to the selected beam combination, based on the selection of the subset of the set of the CSI-RS resources and a value corresponding to the selected beam combination of the two or more beam combinations;
generate a CSI report that includes:
(i) a first part having a first indication of the subset and a second indication of a selected beam combination of the two or more beam combinations;
and (ii) a second part containing CSI corresponding to the subset of the set of CSI-RS resources;
and
reports the CSI report to the at least one base station.

7 more elements

A method performed by a user equipment (UE), the method comprising:

receiving, from at least one base station, a first configuration message that configures the UE to perform channel measurements over a set of channel state information (CSI) reference signal (RS) resources;
receiving, in the first configuration message, two or more beam combinations, each beam combination assigning a respective value of a number of beams associated with each CSI-RS resource;
selecting, based on reception capabilities of the UE and the channel measurements over the set of CSI-RS resources, (i) a subset of the set of the CSI-RS resources and (ii) a selected beam combination of the two or more beam combinations;
adjusting the number of beams corresponding to the selected beam combination, based on the selection of the subset of the set of the CSI-RS resources and a value corresponding to the selected beam combination of the two or more beam combinations;
generating a CSI report that includes:
(i) a first part having a first indication of the subset and a second indication of a selected beam combination of the two or more beam combinations;
and (ii) a second part containing CSI corresponding to the subset of the set of CSI-RS resources;
and
reporting the CSI report via a transceiver of the UE to the at least one network device base station.

6 more elements

A base station for wireless communication, the base station comprising:

at least one memory;
and
at least one processor coupled with the at least memory and configured to cause the base station to:
transmit, to a user equipment (UE), a first configuration message that configures the UE to perform channel measurements over a set of channel state information (CSI) reference signal (RS) resources;
transmit, in the first configuration message, two or more beam combinations, each beam combination assigning a respective value of a number of beams associated with each CSI-RS resource, prompting the UE to select, based on reception capabilities of the UE and the channel measurements over the set of CSI-RS resources, (i) a subset of the set of the CSI-RS resources and (ii) a selected beam combination of the two or more beam combinations, and prompting the UE to adjust the number of beams corresponding to the selected beam combination, based on the selection of the subset of the set of the CSI-RS resources and a value corresponding to the selected beam combination of the two or more beam combinations;
and
receive, via the at least one transceiver from the UE, a CSI report that includes:
(i) a first part having a first indication of the subset and a second indication of a selected beam combination of the two or more beam combinations;
and (ii) a second part containing CSI corresponding to the subset of the set of CSI-RS resources.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/142,628Filed 22 Dec 2023
Priority: 22 Dec 2022
Published: 23 Jul 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04W 24/10
Supervisory, monitoring or testing arrangements: scheduling measurement reports ; Arrangements for measurement reports
H04B 7/0626
Feedback content: channel coefficients, e.g. channel state information [CSI]
H04B 7/0639
Feedback format: using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
H04B 7/066
Feedback reduction: combined feedback for a number of channels, e.g. over several subcarriers like in orthogonal frequency division multiplexing…