WIRELESS COMMUNICATION DEVICE AND METHOD FOR CONTROLLING TRANSMISSION POWER
First Claim
1. A communication apparatus comprising:
- an offset setter which, in operation, sets a first offset value to control transmission power of a first Sounding Reference Signal (SRS) and to set a second offset value to control transmission power of a second SRS, the second offset value being different from the first offset value;
a notifier which, in operation, notifies the first offset value and the second offset value to a communication partner apparatus;
a receiver which, in operation, receives from the communication partner apparatus the first SRS transmitted with the transmission power controlled based on the first offset value and with a first transmission time interval and the second SRS with the transmission power controlled based on the second offset value and with a second transmission time interval, the second transmission time interval being different from the first transmission time interval; and
an estimator which, in operation, estimates a channel quality of an uplink data channel using the received first SRS and the received second SRS.
1 Assignment
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Accused Products
Abstract
Disclosed is a wireless communication device that can suppress an increase in power consumption of a terminal while preventing the degradation of SINR measurement precision resulting from TPC errors in a base station. A terminal controls the transmission power of a second signal by adding an offset to the transmission power of a first signal; an offset-setting unit sets an offset correction value in response to a transmission time gap between a third signal transmitted the previous time and the second signal transmitted this time; and a transmission power control unit controls the transmission power of the second signal using the correction value.
10 Citations
10 Claims
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1. A communication apparatus comprising:
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an offset setter which, in operation, sets a first offset value to control transmission power of a first Sounding Reference Signal (SRS) and to set a second offset value to control transmission power of a second SRS, the second offset value being different from the first offset value; a notifier which, in operation, notifies the first offset value and the second offset value to a communication partner apparatus; a receiver which, in operation, receives from the communication partner apparatus the first SRS transmitted with the transmission power controlled based on the first offset value and with a first transmission time interval and the second SRS with the transmission power controlled based on the second offset value and with a second transmission time interval, the second transmission time interval being different from the first transmission time interval; and an estimator which, in operation, estimates a channel quality of an uplink data channel using the received first SRS and the received second SRS. - View Dependent Claims (2, 3, 4, 5)
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6. A communication method comprising:
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setting a first offset value to control transmission power of a first Sounding Reference Signal (SRS) and a second offset value to control transmission power of a second SRS, the second offset value being different from the first offset value; notifying the first offset value and the second offset value to a communication partner apparatus; receiving from the communication partner apparatus the first SRS transmitted with the transmission power controlled based on the first offset value and with a first transmission time interval and the second SRS transmitted with the transmission power controlled based on the second offset value and with a second transmission time interval, the second transmission time interval being different from the first transmission time interval; and estimating a channel quality of an uplink data channel using the received first SRS and the received second SRS. - View Dependent Claims (7, 8, 9, 10)
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Specification