Subband transmitted precoding matrix indicator indication
AssigneeQUALCOMM Incorporated
InventorsIn-Soo KIM, Yu ZHANG, Yisheng XUE, Jing SUN, Jing JIANG
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Abstract
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration that indicates one or more transmitted precoding matrix indicator (TPMI) groups. The UE may receive a medium access control control element that indicates a TPMI group of the one or more TPMI groups. The UE may receive downlink control information (DCI) that indicates a TPMI within the TPMI group. Numerous other aspects are described.
Claims20
An apparatus for wireless communication at a user equipment (UE), comprising:
- one or more memories;
- and
- one or more processors, coupled to the one or more memories, individually or collectively configured to cause the UE to:
- receive a configuration that indicates one or more transmitted precoding matrix indicator (TPMI) groups;
- receive a medium access control control element (MAC-CE) that indicates a TPMI group of the one or more TPMI groups;
- and
- receive downlink control information (DCI) that indicates a TPMI within the TPMI group.
An apparatus for wireless communication at a user equipment (UE), comprising:
- one or more memories;
- and
- one or more processors, coupled to the one or more memories, individually or collectively configured to cause the UE to:
- receive a medium access control control element (MAC-CE) that indicates multiple preconfigured transmitted precoding matrix indicator (TPMI) sets across physical resource groups (PRGs), each respective preconfigured TPMI set, of the multiple TPMI sets, defining a subband precoding rule;
- and
- receive downlink control information (DCI) that indicates a preconfigured TPMI set of the multiple TPMI sets.
An apparatus for wireless communication at a user equipment (UE), comprising:
- one or more memories;
- and
- one or more processors, coupled to the one or more memories, individually or collectively configured to cause the UE to:
- receive an indication of cross-physical resource group (PRG) bundling of multiple PRGs per transmitted precoding matrix indicator (TPMI);
- and
- receive downlink control information (DCI) that indicates a TPMI and two or more PRGs associated with the TPMI.
An apparatus for wireless communication at a user equipment (UE), comprising:
- one or more memories;
- and
- one or more processors, coupled to the one or more memories, individually or collectively configured to cause the UE to:
- receive a configuration that indicates transmitted precoding matrix indicators (TPMIs) that are associated with channel state information reference signals (CSI-RSs) that are beamformed to implicitly indicate a TPMI;
- receive a beamformed CSI-RS in a physical resource group (PRG);
- and
- transmit a message using subband precoding that is based at least in part on a TPMI associated with the beamformed CSI-RS in accordance with the configuration.
Dependencies are inferred from the claim text.