Method and apparatus for controlling transmission power in a CDMA communication system
AssigneeQUALCOMM Incorporated
InventorsJack M. Holtzman, Tao Chen, Leonid Razoumov
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Abstract
Method and apparatus for controlling transmission power in a closed loop power control system, wherein power control commands are based on the energy of the previous power control commands. In one embodiment, the method compares changes in the received energy of received power control commands against expected changes in those commands based on previously transmitted power control commands, and identifies suspicious responses to said previously transmitted power control commands. Hypothesis testing of the received power control commands is performed accordance any identified suspicious responses.
Claims30
In a communication system including a transmitter for transmitting a first type of data and a second type of data wherein the second type of data is punctured into the first type of data, and wherein the transmission energy of said first type of data is varied in accordance upon the rate of said first type of data and wherein the transmission energy of said second type of data does not vary in accordance with the rate of said first type of data, a power control system for controlling the transmission energy of said first type of data and said second type of data comprising:
- receiver means for receiving said first type of data and said second type of data;
- de-multiplexer means for separating said second type of data from said first type of data;
- means for measuring an energy of said second type of data to provide an indication of an energy of said second type of data as received at the receiver means;
- and
- power control processor means for receiving said indication of the energy of said second type of data and for generating a power control command for said transmission energy of said first type of data in accordance with said indication of the energy of said second type of data.
In a communication system including a transmitter for transmitting a first type of data and a second type of data wherein the second type of data is punctured into the first type of data, and wherein the transmission energy of said first type of data is varied in accordance upon the rate of said first type of data and wherein the transmission energy of said second type of data does not vary in accordance with the rate of said first type of data, a method for controlling the transmission energy of said first type of data and said second type of data comprising:
- receiving said first type of data and said second type of data;
- de-multiplexing said second type of data from said first type of data;
- measuring an energy of said second type of data to form a measured energy;
- and
- generating a power control command for said transmission energy of said first type of data in accordance with said measured energy.
Dependencies are inferred from the claim text.