Wireless communication device and method for controlling transmission power
First Claim
Patent Images
1. A communication apparatus comprising:
- reference signal generating circuitry, which, in operation, generates a first Sounding Reference Signal (SRS) which is to be transmitted periodically and a second SRS which is to be transmitted with a time interval between triggering and transmission that is different from a transmission time interval of the first SRS, both of the first SRS and the second SRS being reference signals for channel-quality estimation;
offset setting circuitry, which, in operation, sets a first offset to control transmission power used to transmit the first SRS and sets a second offset to control transmission power used to transmit the second SRS, the second offset being different from the first offset; and
a transmitter, which, in operation, transmits the first SRS with the transmission power controlled based on the first offset and to transmit the second SRS with the transmission power controlled based on the second offset.
0 Assignments
0 Petitions
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.
-
Citations
12 Claims
-
1. A communication apparatus comprising:
-
reference signal generating circuitry, which, in operation, generates a first Sounding Reference Signal (SRS) which is to be transmitted periodically and a second SRS which is to be transmitted with a time interval between triggering and transmission that is different from a transmission time interval of the first SRS, both of the first SRS and the second SRS being reference signals for channel-quality estimation; offset setting circuitry, which, in operation, sets a first offset to control transmission power used to transmit the first SRS and sets a second offset to control transmission power used to transmit the second SRS, the second offset being different from the first offset; and a transmitter, which, in operation, transmits the first SRS with the transmission power controlled based on the first offset and to transmit the second SRS with the transmission power controlled based on the second offset. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A communication method comprising:
-
generating a first Sounding Reference Signal (SRS) which is to be transmitted periodically and a second SRS which is to be transmitted with a time interval between triggering and transmission that is different from a transmission time interval of the first SRS, both of the first SRS and the second SRS being reference signals for channel-quality estimation; setting a first offset to control transmission power used to transmit the first SRS and setting a second offset to control transmission power used to transmit the second SRS, the second offset being different from the first offset; and transmitting the first SRS with the transmission power controlled based on the first offset and transmitting the second SRS with the transmission power controlled based on the second offset. - View Dependent Claims (8, 9, 10, 11, 12)
-
Specification