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US 9,755,708 B2Granted
High data rate uplink transmission
AssigneeTexas Instruments Incorporated
InventorsEko N. Onggosanusi, Tarik Muharemovic, Anand G. Dabak, Runhua Chen
Life of this patent
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Abstract
A user equipment device has a control information decoder configured to receive and decode an uplink scheduling grant. A transmit module is configured to receive a rank indicator (RI) extracted by the decoder and adapt a transmission rank in response to the RI. At least two transmit antennas are configured to transmit according to the RI.
Claims3
A method of operating a transmitter in a user equipment device, comprising:
- receiving and decoding an uplink schedule grant;
- extracting a rank indicator from said grant;
- adapting a transmission rank in response to said rank indicator;
- and
- transmitting using at least two transmit antennas configured according to said rank indicator, wherein said transmitting communicates with a base station via closed-loop spatial multiplexing.
2 more elements
A base station having at least two receive antennas, comprising:
- a control information generator operable to generate an uplink scheduling grant including a rank indicator, wherein said generator is configured to transmit said grant on a downlink control channel;
- a control information encoder configured to transmit said uplink grant including said rank indicator;
- and
- a receive module configured to receive and decode a transmission consistent with said uplink grant.
1 more element
A method of operating a base station having at least two receive antennas, comprising:
- generating an uplink scheduling grant including a rank indicator;
- transmitting said grant including said rank indicator on a downlink control channel;
- and
- receiving and decoding a transmission consistent with said uplink grant.
1 more element
Dependencies are inferred from the claim text.