Power control in wireless networks
AssigneeQUALCOMM Incorporated
InventorsArjun Bharadwaj, Rahul Tandra, Bin Tian, Youhan Kim, Simone Merlin, George Cherian
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Abstract
A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, the apparatus is configured to determine a target receiver power level for uplink transmissions received at the apparatus, to determine uplink power control information based on the determined target receiver power level for UL MU-MIMO transmission or UL OFDMA transmission, and to transmit a frame that includes the determined uplink power control information to a station scheduled by the apparatus for uplink transmission.
Claims20
A method of wireless communication by a wireless node, comprising:
- receiving a first frame from an access point, the first frame including a downlink transmit power used to transmit the first frame and further including uplink power control information, the uplink power control information comprising a target receiver power level for at least one of uplink multi-user multiple-input-multiple-output (UL MU-MIMO) transmission or uplink orthogonal frequency-division multiple access (UL OFDMA) transmission to be received at the access point from the wireless node;
- determining a transmit power based on the uplink power control information;
- and
- transmitting a second frame to the access point based on the determined transmit power;
- wherein the determination of the transmit power further comprises:
- determining a pathloss between the wireless node and the access point based on the downlink transmit power indicated in the first frame;
- and
- computing the transmit power based on the determined pathloss and the uplink power control information.
An apparatus for wireless communication, comprising:
- means for receiving a first frame from an access point, the first frame including a downlink transmit power used to transmit the first frame and further including uplink power control information, the uplink power control information comprising a target receiver power level for at least one of uplink multi-user multiple-input-multiple-output (UL MU-MIMO) transmission or uplink orthogonal frequency-division multiple access (UL OFDMA) transmission to be received at the access point from the apparatus;
- means for determining a transmit power based on the uplink power control information;
- and
- means for transmitting a second frame to the access point based on the determined transmit power;
- wherein the means for determining the transmit power is configured to:
- determine a pathloss between the apparatus and the access point based on the downlink transmit power indicated in the first frame;
- and
- compute the transmit power based on the determined pathloss and the uplink power control information.
An apparatus for wireless communication, comprising:
- one or more transceivers;
- one or more non-transitory memories, individually or in combination, having instructions;
- and
- one or more processors, individually or in combination, configured to execute the instructions to cause the apparatus to:
- receive, via the one or more transceivers, a first frame from an access point, the first frame including a downlink transmit power used to transmit the first frame and further including uplink power control information, the uplink power control information comprising a target receiver power level for at least one of uplink multiuser multiple-input-multiple-output (UL MU-MIMO) transmission or uplink orthogonal frequency-division multiple access (UL OFDMA) transmission to be received at the access point;
- determine a transmit power based on the uplink power control information;
- and
- transmit, via the one or more transceivers, a second frame to the access point based on the determined transmit power;
- wherein the apparatus determines the transmit power by:
- determining a pathloss with the access point based on the downlink transmit power indicated in the first frame;
- and
- computing the transmit power based on the determined pathloss and the uplink power control information.
Dependencies are inferred from the claim text.