Pathloss aided closed loop power control
First Claim
1. A method for controlling transmission power levels of a transmitter station, the method comprising:
- receiving at the transmitting station a transmit power command and a reference signal, the transmit power command indicating an increase or decrease in transmission power for the transmitting station;
measuring a received power level of the reference signal and comparing the measured reference signal received power level to a transmit power level of the reference signal to produce a pathloss estimate of the reference signal;
determining a size of a change in transmit power level using the produced pathloss estimate;
adjusting a transmission power level of the transmitting station in response to the transmit power command in an amount of the determined change in size; and
transmitting a communication at the adjusted transmission power level.
1 Assignment
0 Petitions
Accused Products
Abstract
A transmitting station receives a transmit power command and a reference signal. The transmit power command indicates an increase or decrease in transmission power for the transmitting station. A received power level of the reference signal is measured and the measured reference signal received power level is compared to a transmit power level of the reference signal to produce a pathloss estimate of the reference signal. A size of a change in transmit power level is determined using the pathloss estimate. A transmission power level of the transmitting station is adjusted in response to the transmit power command in an amount of the determined change in size. A communication is transmitted at the adjusted transmission power level.
59 Citations
45 Claims
-
1. A method for controlling transmission power levels of a transmitter station, the method comprising:
-
receiving at the transmitting station a transmit power command and a reference signal, the transmit power command indicating an increase or decrease in transmission power for the transmitting station;
measuring a received power level of the reference signal and comparing the measured reference signal received power level to a transmit power level of the reference signal to produce a pathloss estimate of the reference signal;
determining a size of a change in transmit power level using the produced pathloss estimate;
adjusting a transmission power level of the transmitting station in response to the transmit power command in an amount of the determined change in size; and
transmitting a communication at the adjusted transmission power level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A user equipment comprising:
-
means for receiving a transmit power command, the transmit power command indicating an increase or decrease in transmission power;
means for receiving a reference signal;
means for measuring a received power level of the reference signal and comparing the measured reference signal received power level to a transmit power level of the reference signal to produce a pathloss estimate of the reference signal;
means for determining a size of a change in transmit power level using the produced pathloss estimate;
means for adjusting a transmission power level in response to the transmit power command in an amount of the determined change in size; and
means for transmitting a communication at the adjusted transmission power level. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A user equipment comprising:
-
a transmit power command receiver and judgment device for receiving a transmit power command and determining a value of the received transmit power command, the transmit power command indicating an increase or decrease in transmission power;
an antenna for receiving a reference signal and radiating a communication;
a reference signal power measurement device for measuring a received power level of the reference signal;
a pathloss determination device for comparing the measured reference signal received power level to a transmit power level of the reference signal to produce a pathloss estimate of the reference signal;
a transmit power control determination device for determining a size of a change in transmit power level using the produced pathloss estimate and for determining an adjustment in a transmission power level in response to the transmit power command in an amount of the determined change in size; and
a modulation and spreading device for producing the communication; and
an amplifier for adjusting a transmission power level of the communication based on the adjustment in transmission power level. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. A base station comprising:
-
means for receiving a transmit power command, the transmit power command indicating an increase or decrease in transmission power;
means for receiving a reference signal;
means for measuring a received power level of the reference signal and comparing the measured reference signal received power level to a transmit power level of the reference signal to produce a pathloss estimate of the reference signal;
means for determining a size of a change in transmit power level using the produced pathloss estimate;
means for adjusting a transmission power level in response to the transmit power command in an amount of the determined change in size; and
means for transmitting a communication at the adjusted transmission power level. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36)
-
-
37. A base station comprising:
-
a transmit power command receiver and judgment device for receiving a transmit power command and determining a value of the received transmit power command, the transmit power command indicating an increase or decrease in transmission power;
an antenna for receiving a reference signal and radiating a communication;
a reference signal power measurement device for measuring a received power level of the reference signal;
a pathloss determination device for comparing the measured reference signal received power level to a transmit power level of the reference signal to produce a pathloss estimate of the reference signal;
a transmit power control determination device for determining a size of a change in transmit power level using the produced pathloss estimate and for determining an adjustment in a transmission power level in response to the transmit power command in an amount of the determined change in size; and
a modulation and spreading device for producing the communication; and
an amplifier for adjusting a transmission power level of the communication based on the adjustment in transmission power level. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45)
-
Specification