Beam procedure information for channel state information reference signals (CSI-RS)
AssigneeQUALCOMM Incorporated
InventorsJuergen Cezanne, Jianghong Luo, Sundar Subramanian, Muhammad Nazmul Islam, Bilal Sadiq, Junyi Li
Life of this patent
Estimating the term…
Abstract
Certain aspects of the present disclosure provide techniques for beam refinement. A base station provides information regarding what transmit beams are used to transmit different reference signal (RS) resources. In some cases, the information indicates whether a same transmit beam is used to transmit a set of RS resources (e.g., symbol, sub-symbol, or frequency resources) or whether different transmit beams are used to transmit the set of RS resources.
Claims20
A method for wireless communication by a user equipment (UE), comprising:
- obtaining information for performing a beam refinement procedure, wherein the information indicates which channel state information reference signals (CSI-RSs) of a set of CSI-RSs are to be transmitted by a base station using a same transmit beam;
- deciding, based on the information, which receive beams of a plurality of receive beams to use for receiving the CSI-RSs transmitted by the base station, wherein the receive beams used by the UE for receiving the CSI-RSs are different from the transmit beam used by the base station to transmit the CSI-RSs;
- and
- receiving the CSI-RSs in accordance with the decision.
A method for wireless communication by a base station, comprising:
- deciding which transmit beams of a plurality of transmit beams to use for transmitting a set of channel state information reference signals (CSI-RSs) to a user equipment (UE) as part of a beam refinement procedure;
- providing, to the UE, information for performing the beam refinement procedure indicating which CSI-RSs of the set of CSI-RSs are to be transmitted by the base station using a same transmit beam of the plurality of transmit beams;
- and
- transmitting the CSI-RSs in accordance with the decision.
An apparatus for wireless communication by a user equipment (UE), comprising:
- means for obtaining information for performing a beam refinement procedure, wherein the information indicates which channel state information reference signals (CSI-RSs) of a set of CSI-RSs are to be transmitted by a base station using a same transmit beam;
- means for deciding, based on the information, which receive beams of a plurality of receive beams to use for receiving the CSI-RSs transmitted by the base station, wherein the receive beams used by the UE for receiving the CSI-RSs are different from the transmit beam used by the base station to transmit the CSI-RSs;
- and
- means for receiving the CSI-RSs in accordance with the decision.
An apparatus for wireless communication by a base station, comprising:
- means for deciding which transmit beams of a plurality of transmit beams to use for transmitting a set of channel state information reference signals (CSI-RSs) to a user equipment (UE) as part of a beam refinement procedure;
- means for providing, to the UE, information for performing the beam refinement procedure indicating which CSI-RSs of the set of CSI-RSs are to be transmitted by the base station using a same transmit beam of the plurality of transmit beams;
- and
- means for transmitting the CSI-RSs in accordance with the decision.
An apparatus for wireless communication by a user equipment (UE), comprising:
- at least one processor configured to:
- obtain information for performing a beam refinement procedure, wherein the information indicates which channel state information reference signals (CSI-RSs) of a set of CSI-RSs are to be transmitted by a base station using a same transmit beam;
- decide, based on the information, which receive beams of a plurality of receive beams to use for receiving the CSI-RSs transmitted by the base station, wherein the receive beams used by the UE for receiving the CSI-RSs are different from the transmit beam used by the base station to transmit the CSI-RSs, and
- receive the CSI-RSs in accordance with the decision;
- and
- a memory coupled with the at least one processor.
An apparatus for wireless communication by a base station, comprising:
- at least one processor configured to:
- decide which transmit beams of a plurality of transmit beams to use for transmitting a set of channel state information reference signals (CSI-RSs) to a user equipment (UE) as part of a beam refinement procedure;
- provide, to the UE, information for performing the beam refinement procedure indicating which CSI-RSs of the set of CSI-RSs are to be transmitted by the base station using a same transmit beam of the plurality of transmit beams;
- and
- transmit the CSI-RSs in accordance with the decision;
- and
- a memory coupled with the at least one processor.
Dependencies are inferred from the claim text.