Uplink power control using received reference signal
First Claim
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1. A method for calculating a power level of uplink transmit power, the method comprising:
- receiving a reference signal;
obtaining a reference power level from the reference signal;
determining path loss based, at least in part, upon said reference signal;
receiving a value indicating an uplink interference level;
receiving a quality margin for the reference signal, said quality margin including an uplink signal to interference ratio target;
determining an initial uplink transmit power level based, at least in part, upon said path loss, said uplink interference level, and said quality margin; and
transmitting a hybrid automatic repeat request acknowledgement at said uplink transmit power level.
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Abstract
A user equipment (UE) receives a reference signal over a physical reference channel using a reference channel receiver and obtains reference power levels from the reference signal. The interference level is obtained and a path loss is calculated in response to the reference signal. Transmit power is then determined for an allocated uplink control channel based, at least in part, upon said path loss and said interference level.
28 Citations
13 Claims
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1. A method for calculating a power level of uplink transmit power, the method comprising:
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receiving a reference signal; obtaining a reference power level from the reference signal; determining path loss based, at least in part, upon said reference signal; receiving a value indicating an uplink interference level; receiving a quality margin for the reference signal, said quality margin including an uplink signal to interference ratio target; determining an initial uplink transmit power level based, at least in part, upon said path loss, said uplink interference level, and said quality margin; and transmitting a hybrid automatic repeat request acknowledgement at said uplink transmit power level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A user equipment (UE) capable of calculating a power level of uplink transmit power, the UE comprising:
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a receiver circuit for receiving a reference signal, an uplink interference level, and a quality margin for the reference signal, the quality margin including an uplink signal to interference ratio target; a reference power determining circuit for obtaining reference power levels from the received reference signal; a path loss measurement circuit for measuring path loss based on the reference signal; an uplink power level circuit for determining an initial uplink transmit power level based, at least in part, upon the path loss, the uplink interference level, and the quality margin; and a transmitting circuit for transmitting a hybrid automatic repeat request acknowledgement at the initial uplink transmit power level. - View Dependent Claims (10, 11, 12, 13)
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Specification