Verifying support for requests for transmission parameters in a multi-user scenario
AssigneeQUALCOMM Incorporated
InventorsSimone Merlin, Albert Van Zelst, Maarten Menzo Wentink
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Abstract
Link adaptation is supported in a multi-user MIMO environment. In some aspects, a frame including a transmission parameter request (e.g., a null data packet announcement (NDPA) including a modulation and coding scheme (MCS) request (MRQ)) specifies multiple destinations. In some aspects, a decision to transmit a frame specifying multiple destinations is based on whether all of destinations support providing feedback to such a frame. In some aspects, transmission parameter feedback (e.g., MCS feedback (MFB)) including channel estimate information is provided in a case where MFB of type MU is requested.
Claims20
An apparatus for wireless communication, comprising:
- a transceiver configured to receive a plurality of link adaptation indications from a plurality of other apparatuses;
- and
- a processor coupled to the transceiver and configured to determine, based on the received link adaptation indications, whether each apparatus of the plurality of other apparatuses has indicated that responses will be provided to requests for at least one transmission parameter, and further configured to generate a frame if the determination indicates that each apparatus of the plurality of other apparatuses has indicated that responses will be provided, wherein the frame comprises a request for the at least one transmission parameter from the plurality of other apparatuses and further comprises identifiers of the plurality of other apparatuses,
- wherein the transceiver is further configured to transmit the frame.
A method of wireless communication, comprising:
- receiving a plurality of link adaptation indications from a plurality of apparatuses;
- determining, based on the received link adaptation indications, whether each apparatus of the plurality of apparatuses has indicated that responses will be provided to requests for at least one transmission parameter;
- generating a frame if the determination indicates that each apparatus of the plurality of apparatuses has indicated that responses will be provided, wherein the frame comprises a request for the at least one transmission parameter from the plurality of apparatuses and further comprises identifiers of the plurality of apparatuses;
- and
- transmitting the frame.
An apparatus for wireless communication, comprising:
- means for receiving a plurality of link adaptation indications from a plurality of other apparatuses;
- means for determining, based on the received link adaptation indications, whether each apparatus of the plurality of other apparatuses has indicated that responses will be provided to requests for at least one transmission parameter;
- means for generating a frame if the determination indicates that each apparatus of the plurality of other apparatuses has indicated that responses will be provided, wherein the frame comprises a request for the at least one transmission parameter from the plurality of other apparatuses and further comprises identifiers of the plurality of other apparatuses;
- and
- means for transmitting the frame.
A non-transitory computer-readable storage medium storing codes executable by a computer to:
- receive a plurality of link adaptation indications from a plurality of apparatuses;
- determine, based on the received link adaptation indications, whether each apparatus of the plurality of apparatuses has indicated that responses will be provided to requests for at least one transmission parameter;
- generate a frame if the determination indicates that each apparatus of the plurality of apparatuses has indicated that responses will be provided, wherein the frame comprises a request for the at least one transmission parameter from the plurality of apparatuses and further comprises identifiers of the plurality of apparatuses;
- and
- transmit the frame.
A wireless node, comprising:
- an antenna;
- a transceiver coupled to the antenna and configured to receive a plurality of link adaptation indications from a plurality of other wireless nodes;
- and
- a processor coupled to the transceiver and configured to determine, based on the received link adaptation indications, whether each wireless node of the plurality of other wireless nodes has indicated that responses will be provided to requests for at least one transmission parameter, and further configured to generate a frame if the determination indicates that each wireless node of the plurality of other wireless nodes has indicated that responses will be provided, wherein the frame comprises a request for the at least one transmission parameter from the plurality of other wireless nodes and further comprises identifiers of the plurality of other wireless nodes,
- wherein the transceiver is further configured to transmit the frame via the antenna.
Dependencies are inferred from the claim text.