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US 12,763,839 B2Granted
Method and apparatus for codebook subset restriction
AssigneeSamsung Electronics Co., Ltd.
InventorsAmeha Tsegaye Abebe, Younsun Kim, Seongmok Lim, Youngrok Jang, Kyungjun Choi
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Abstract
A method performed by a UE in a wireless communication system includes receiving configuration information on a CSI report including information on a codebook subset restriction, the codebook subset restriction being configured to each TRP of a plurality of TRPs performing coherent joint transmission or to a subset of the plurality of TRPs based on the information, measuring CSI based on at least one CSI-RS resource, and transmitting the CSI based on the codebook subset restriction.
Claims12
A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
- receiving configuration information for a channel state information (CSI) report including information on a codebook subset restriction for coherent joint transmission (CJT) CSI;
- measuring CSI based on CSI-RS resources corresponding to a plurality of transmission reception points (TRPs) performing CJT;
- and
- transmitting the CSI based on the information on the codebook subset restriction,
- wherein the information on the codebook subset restriction for the CJT CSI comprises a plurality of bit sequences, each bit sequence corresponding to one of the plurality of TRPs,
- wherein whether the codebook subset restriction is applied to each TRP is determined based on one of the plurality of bit sequences corresponding to each TRP, and
- wherein each bit sequence is formed by concatenating a first bit sequence indicating vector groups of each TRP to which the codebook subset restriction is applied and a second bit sequence indicating a maximum average coefficient amplitude corresponding to the vector groups.
4 more elements
A method performed by a base station in a wireless communication system, the method comprising:
- transmitting, to a user equipment (UE), configuration information for a channel state information (CSI) report including information on a codebook subset restriction for coherent joint transmission (CJT) CSI;
- transmitting, to the UE, a CSI-RS on CSI-RS resources corresponding to a plurality of transmission reception points (TRPs) performing CJT;
- and
- receiving, from the UE, CSI based on the information on the codebook subset restriction,
- wherein the CSI is derived based on the CSI-RS resources,
- wherein the information on the codebook subset restriction for the CJT CSI comprises a plurality of bit sequences, each bit sequence corresponding to one of the plurality of TRPs,
- wherein whether the codebook subset restriction is applied to each TRP is determined based on one of the plurality of bit sequences corresponding to each TRP, and
- wherein each bit sequence is formed by concatenating a first bit sequence indicating vector groups of each TRP to which the codebook subset restriction is applied and a second bit sequence indicating a maximum average coefficient amplitude corresponding to the vector groups.
5 more elements
A user equipment (UE) in a wireless communication system, the UE comprising:
- a transceiver;
- and
- a controller coupled with the transceiver and configured to:
- receive configuration information for a channel state information (CSI) report including information on a codebook subset restriction for coherent joint transmission (CJT) CSI,
- measure CSI based on CSI-RS resources corresponding to a plurality of transmission reception points (TRPs) performing CJT, and
- transmit the CSI based on the information on the codebook subset restriction,
- wherein the information on the codebook subset restriction for the CJT CSI comprises a plurality of bit sequences, each bit sequence corresponding to one of the plurality of TRPs,
- wherein whether the codebook subset restriction is applied to each TRP is determined based on one of the plurality of bit sequences corresponding to each TRP, and
- wherein each bit sequence is formed by concatenating a first bit sequence indicating vector groups of each TRP to which the codebook subset restriction is applied and a second bit sequence indicating a maximum average coefficient amplitude corresponding to the vector groups.
6 more elements
A base station in a wireless communication system, the base station comprising:
- a transceiver;
- and
- a controller coupled with the transceiver and configured to:
- transmit, to a user equipment (UE), configuration information for a channel state information (CSI) report including information on a codebook subset restriction for coherent joint transmission (CJT) CSI,
- transmit, to the UE, a CSI-RS on CSI-RS resources corresponding to a plurality of transmission reception points (TRPs) performing CJT, and
- receive, from the UE, CSI based on the information on the codebook subset restriction,
- wherein the CSI is derived based on the CSI-RS resources,
- wherein the information on the codebook subset restriction for the CJT CSI comprises a plurality of bit sequences, each bit sequence corresponding to one of the plurality of TRPs,
- wherein whether the codebook subset restriction is applied to each TRP is determined based on one of the plurality of bit sequences corresponding to each TRP, and
- wherein each bit sequence is formed by concatenating a first bit sequence indicating vector groups of each TRP to which the codebook subset restriction is applied and a second bit sequence indicating a maximum average coefficient amplitude corresponding to the vector groups.
7 more elements
Dependencies are inferred from the claim text.