Method and apparatus for low power-rise power control using sliding-window-weighted QoS measurements

A communication apparatus comprising:

• a receiver coupled to receive a transmission, a series of actual error signals being determined from the transmission wherein each actual error signal includes a quantity of data block data and a quantity of data error data;
• a sliding window filter to filter the actual error signals from the receiver, the sliding window filter having a variable size of sliding window;
• a processor for computing an expected error signal;
• a comparator coupled to receive an expected error signal and the actual error signal, the comparator generating a correction signal based upon the expected error signal and the actual error signal;
• and
• a transmitter coupled to receive the correction signal from the comparator and transmit an update message based upon the correction signal.

A communication apparatus comprising:

• means for receiving a series of actual error signals, wherein each actual error signal includes quantity of data block data and quantity of data error data;
• means for determining the size of a sliding window;
• means for filtering the series of actual error signals using the sliding window;
• means for computing an expected error signal using the sliding window;
• means for determining whether the target SIR will increase or decrease;
• means for generating a correction signal by comparing the filtered series of actual error signals and the expected error signal;
• and
• means for updating the target signal to interference ratio based upon the correction signal.

A personal communication device comprising:

• an antenna;
• a signal input/output section;
• a display;
• a keypad;
• and
• a data processor, wherein the data processor is adapted to:
• receive a series of actual error signals, wherein each actual error signal includes quantity of data block data and quantity of data error data;
• determine the size of a sliding window;
• filter the series of actual error signals using the sliding window;
• compute an expected error signal using the sliding window;
• determine whether the target SIR will increase or decrease;
• generate a correction signal by comparing the filtered series of actual error signals and the expected error signal;
• and
• update the target signal to interference ratio based upon the correction signal.

A process for controlling a target signal to interference ratio (SIR) in a communication system, the process comprising:

• receiving a series of actual error signals, wherein each actual error signal includes data block data and data error data;
• determining a window size;
• weighting a quantity of data error data, the quantity determined from the window size;
• summing together each of the weighted quantity of data error data thereby generating a filtered series of actual error signals;
• totaling the quantity of data block data in the series of actual error signals;
• generating an expected error signal by multiplying the summed quantity of data block data by an acceptable error rate;
• generating a difference signal by subtracting the expected error signal from the filtered series of actual error signals;
• determining whether the target SIR will increase or decrease;
• generating a correction signal by multiplying the difference signal by a first predetermined constant when the target SIR to be increased, and by a second predetermined constant when the target SIR to be reduced thereby generating the correction signal;
• and
• updating the target signal to interference ratio based upon the correction signal.