Method and apparatus for performing fast power control in a mobile communication system
First Claim
Patent Images
1. An apparatus for dynamically controlling transmission power, comprising:
- receiver means for receiving a signal from a remote station; and
transmitter means for adjusting a transmission power for the received signal to an acceptable level following a transmission power increase,control processor means for determining the acceptable level by determining the cause of the transmission power increase, wherein the cause of the transmission power increase comprises at least one of a random fade condition or a continuing fade condition and whereinif the cause of the transmission power increase is determined to be a random fade condition, then reducing the transmission power at a first predetermined rate for a first predetermined time period in response to the transmission power increase;
if the transmission power is still at an unacceptable level after reducing the transmission power at a first predetermined rate for a first predetermined time period, then continuing to reduce the transmission power at a second predetermined rate for at least one other predetermined time period following the first predetermined time period, wherein the first predetermined time period and the at least one other predetermined time period are either of equal or non-equal duration; and
if the cause of the transmission power increase is determined to be a continuing fade condition, then maintaining the transmission power at the level of the transmission power increase.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and apparatus for controlling transmission power in a mobile communication system is disclosed. The method disclosed provides for a closed-loop power control method for variable rate transmissions. The power of transmissions is varied in accordance with the rate of the frames of data being transmitted. The transmission power between the rates can be a fixed or variable difference.
143 Citations
24 Claims
-
1. An apparatus for dynamically controlling transmission power, comprising:
-
receiver means for receiving a signal from a remote station; and transmitter means for adjusting a transmission power for the received signal to an acceptable level following a transmission power increase, control processor means for determining the acceptable level by determining the cause of the transmission power increase, wherein the cause of the transmission power increase comprises at least one of a random fade condition or a continuing fade condition and wherein if the cause of the transmission power increase is determined to be a random fade condition, then reducing the transmission power at a first predetermined rate for a first predetermined time period in response to the transmission power increase; if the transmission power is still at an unacceptable level after reducing the transmission power at a first predetermined rate for a first predetermined time period, then continuing to reduce the transmission power at a second predetermined rate for at least one other predetermined time period following the first predetermined time period, wherein the first predetermined time period and the at least one other predetermined time period are either of equal or non-equal duration; and if the cause of the transmission power increase is determined to be a continuing fade condition, then maintaining the transmission power at the level of the transmission power increase. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An apparatus for controlling transmission power of variable rate frames of data, comprising:
-
control processor means for providing a transmit power signal and is further for determining a reference rate transmit power level, and for determining at least one additional reference rate transmit power level in accordance with the reference rate transmit power; variable gain transmitter means for receiving the transmit power signal and a variable rate frames of data signal, and for amplifying the variable rate frames of data in accordance with the transmit power signal and the variable rate frames of data signal; and variable rate frames of data source means for providing the variable rate data frames and the variable rate frames of data signal. - View Dependent Claims (9, 10)
-
-
11. A method for dynamically controlling transmission power comprising:
-
receiving a signal at a receiver from a remote station; and adjusting a transmission power in a transmitter for the received signal to an acceptable level following a transmission power increase, determining in a control processor the acceptable level by determining the cause of the transmission power increase, wherein the cause of the transmission power increase comprises at least one of a random fade condition or a continuing fade condition and wherein if the cause of the transmission power increase is determined to be a random fade condition, then reducing the transmission power at a first predetermined rate for a first predetermined time period in response to the transmission power increase; if the transmission power is still at an unacceptable level after reducing the transmission power at a first predetermined rate for a first predetermined time period, then continuing to reduce the transmission power at a second predetermined rate for at least one other predetermined time period following the first predetermined time period, wherein the first predetermined time period and the at least one other predetermined time period are either of equal or non-equal duration; and if the cause of the transmission power increase is determined to be a continuing fade condition, then maintaining the transmission power at the level of the transmission power increase. - View Dependent Claims (12, 13, 14, 15, 16, 17)
-
-
18. A programmed processor including a program therein causing the processor to execute a method to dynamically control transmission power, the method comprising:
-
receiving a signal from a remote station; adjusting a transmission power for the received signal to an acceptable level following a transmission power increase; and determining the acceptable level by determining the cause of the transmission power increase, wherein the cause of the transmission power increase comprises at least one of a random fade condition or a continuing fade condition and wherein if the cause of the transmission power increase is determined to be a random fade condition, then reducing the transmission power at a first predetermined rate for a first predetermined time period in response to the transmission power increase; if the transmission power is still at an unacceptable level after reducing the transmission power at a first predetermined rate for a first predetermined time period, then continuing to reduce the transmission power at a second predetermined rate for at least one other predetermined time period following the first predetermined time period, wherein the first predetermined time period and the at least one other predetermined time period are either of equal or non-equal duration; and if the cause of the transmission power increase is determined to be a continuing fade condition, then maintaining the transmission power at the level of the transmission power increase. - View Dependent Claims (19, 20, 21, 22, 23, 24)
-
Specification