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US 11,638,281 B2Granted
Method and apparatus for a user equipment sub-chain beam codebook design and operation
AssigneeSamsung Electronics Co., Ltd.
InventorsJianhua Mo, Boon Loong Ng, Anum Ali, Vutha Va, Daehee Park
Life of this patent
Estimating the term…
Abstract
A user equipment (UE) is configured to vary a number of chains in uplink or downlink communications with a base station (BS). The UE includes a processor coupled to a transceiver. The processor is configured to: identify a full-chain beam for a downlink reception based on a beam sweeping; determine a number of activated chains for an uplink transmission; and determine a sub-chain uplink transmission beam.
Claims20
A user equipment (UE) in a wireless communication system, the UE comprising:
- a transceiver configured to receive, from a base station (BS), a precoding matrix indicator (PMI) feedback requirement;
- and
- a processor operably coupled to the transceiver and configured to:
- identify a full-chain beam for a downlink reception based on a beam sweeping operation to determine a candidate beam,
- determine, based on the PMI feedback requirement, a number of activated chains for an uplink transmission, and
- determine a sub-chain uplink transmission beam.
3 more elements
A method for operating a user equipment (UE), the method comprising:
- receiving, from a base station (BS), a precoding matrix indicator (PMI) feedback requirement;
- identifying a full-chain beam for a downlink reception from based on a beam sweeping operation to determine a candidate beam;
- determining, based on the PMI feedback requirement, a number of activated chains for an uplink transmission;
- and
- determining a sub-chain uplink transmission beam.
2 more elements
Dependencies are inferred from the claim text.