CSI-RS configuration for partial band retuning
AssigneeQUALCOMM Incorporated
InventorsYu Zhang, Wanshi Chen
Life of this patent
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Abstract
Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a message indicating, for each or multiple partial bands, a set of possible channel state information reference signal (CSI-RS) configurations. The UE may further receive downlink control information (DCI) from a base station, which may indicate a set of downlink resource associated with a first partial band. The UE may select a first CSI-RS configuration from the set of possible CSI-RS configurations for the first partial band based on the DCI, and when the base station transmits CSI-RS, the UE may obtain CSI-RS measurements over the first partial band during the set of downlink resources using the selected first CSI-RS configuration.
Claims28
A method for wireless communication at a user equipment (UE), comprising:
- receiving from an access network entity a radio resource control (RRC) message indicating a set of two or more possible channel state information reference signal (CSI-RS) configurations for a partial band of a plurality of partial bands within a total configured bandwidth of the UE;
- receiving downlink control information (DCI) from the access network entity, the DCI indicating a set of downlink resources associated with a first partial band of the plurality of partial bands;
- selecting a first CSI-RS configuration from the set of two or more possible CSI-RS configurations for the first partial band based at least in part on the DCI;
- and
- obtaining CSI measurements over the set of downlink resources in the first partial band using the selected first CSI-RS configuration.
A method for wireless communication, comprising:
- transmitting a radio resource control (RRC) message to a user equipment (UE) indicating a set of two or more possible channel state information reference signal (CSI-RS) configurations for a partial band of a plurality of partial bands within a total configured bandwidth of the UE;
- transmitting downlink control information (DCI) to the UE, the DCI indicating a set of downlink resources associated with a first partial band of the plurality of partial bands;
- selecting a CSI-RS configuration from the set of two or more possible CSI-RS configurations for the first partial band based at least in part on the set of downlink resources;
- and
- performing CSI-RS transmissions during the set of downlink resources in the first partial band according to the selected CSI-RS configuration.
A method for wireless communication at a user equipment (UE), comprising:
- receiving from an access network entity a CSI-RS configuration associated with a first partial band within a total configured bandwidth of the UE;
- receiving downlink control information (DCI) from the access network entity, the DCI indicating a set of downlink resources associated with a second partial band within the total configured bandwidth of the UE;
- and
- transmitting, to the access network entity, a partial CSI report, wherein there is a degree of overlap between frequency resources of the first partial band and frequency resources of the second partial band, and the partial CSI report comprises partial CSI-RS measurements taken over overlapping frequency resources of the first partial band and the second partial band.
An apparatus for wireless communication at a user equipment (UE), comprising:
- a processor;
- memory in electronic communication with the processor;
- and
- instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
- receive from a access network entity a radio resource control (RRC) message indicating a set of two or more possible channel state information reference signals (CSI-RS) configurations for a partial band of a plurality of partial bands within a total configured bandwidth of the UE;
- receive downlink control information (DCI) from the access network entity, the DCI indicating a set of downlink resources associated with a first partial band of the plurality of partial bands;
- select a first CSI-RS configuration from the set of two or more possible CSI-RS configurations for the first partial band based at least in part on the DCI;
- and
- obtain CSI measurements over the set of downlink resources in the first partial band using the selected first CSI-RS configuration.
Dependencies are inferred from the claim text.