Method and apparatus for adaptive rate selection in a communication system
AssigneeQUALCOMM Incorporated
InventorsNagabhushana T. Sindhushayana, Eduardo A.S. Esteves, Rashid A. Attar, Qiang Wu
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Abstract
A method and an apparatus for adaptive data rate selection in a high data rate (HDR) communication system are disclosed. An exemplary HDR communication system defines a set of data rates, at which an access point (AP) may transmit data packets to an access terminal (AT). The transmission data rate is selected to maintain target packet error rate (PER). Each AT monitors signal quality metric of signals received from APs. An AT receiving forward link signals from multiple ATs identifies the AT associated with the highest quality forward link signal.
Claims18
A computer readable medium embodying a method for adaptive data rate selection in a communication system, the method comprising:
- selecting a target packet error rate;
- predicting a first data rate a packet error rate of which is smaller than said target packet error rate, comprising:
- selecting a target tail probability of error;
- determining a first quality metric corresponding to said target tail probability;
- and
- selecting said first data rate a quality metric of which is smaller than said first quality metric;
- predicting a second data rate a packet error rate of which is greater than said target packet error rate;
- predicting a third data rate a packet error rate of which is greater than said target packet error rate;
- and
- requesting said first data rate or said second data rate or said third data rate to achieve said target packet error rate.
A computer readable medium embodying a method for adaptive data rate selection in a communication system, the method comprising:
- selecting a target packet error rate;
- predicting a first data rate a packet error rate of which is smaller than said target packet error rate;
- predicting a second data rate a packet error rate of which is greater than said target packet error rate, comprising:
- selecting a target tail probability of error;
- determining a first quality metric corresponding to said target tail probability;
- and
- selecting said second data rate a quality metric of which is greater than said first quality metric;
- predicting a third data rate a packet error rate of which is greater than said target packet error rate;
- and
- requesting said first data rate or said second data rate or said third data rate to achieve said target packet error rate.
A computer readable medium embodying a method for adaptive data rate selection in a communication system, the method comprising:
- selecting a target packet error rate;
- predicting a first data rate a packet error rate of which is smaller than said target packet error rate;
- predicting a second data rate a packet error rate of which is greater than said target packet error rate;
- predicting a third data rate a packet error rate of which is greater than said target packet error rate, comprising:
- selecting a target tail probability of error;
- determining a first quality metric corresponding to said target tail probability;
- and
- selecting said third data rate a quality metric of which is greater than said first quality metric, and said third data rate is greater than said second data rate;
- and
- requesting said first data rate or said second data rate or said third data rate to achieve said target packet error rate.
A computer readable medium embodying a method for adaptive data rate selection in a communication system, the method comprising:
- selecting a target packet error rate;
- predicting a first data rate a packet error rate of which is smaller than said target packet error rate;
- predicting a second data rate a packet error rate of which is greater than said target packet error rate;
- predicting a third data rate a packet error rate of which is greater than said target packet error rate;
- and
- requesting said first data rate or said second data rate or said third data rate to achieve said target packet error rate, comprising:
- determining a first packet error rate probability for a first data rate;
- determining a second packet error rate probability for a second data rate;
- determining a third packet error rate probability for a third data rate;
- and
- determining said first data rate or said second data rate or said third data rate in accordance with said first packet error rate probability, said second packet error rate probability, and said third packet error rate probability.
A computer readable medium embodying a method for adaptive data rate selection in a communication system, the method comprising:
- selecting a target packet error rate;
- predicting a first set of data rates a packet error rate of which is smaller than said target packet error rate, comprising:
- selecting a target tail probability of error;
- determining a first quality metric corresponding to said target tail probability;
- and
- selecting said first set of data rates a quality metric of which is smaller than said first quality metric;
- predicting a second set of data rates a packet error rate of which is greater than said target packet error rate;
- and
- requesting a first data rate from said first set or a second data rate from said second set to achieve said target packet error rate.
A computer readable medium embodying a method for adaptive data rate selection in a communication system, the method comprising:
- selecting a target packet error rate;
- predicting a first set of data rates a packet error rate of which is smaller than said target packet error rate;
- predicting a second set of data rates a packet error rate of which is greater than said target packet error rate, comprising:
- selecting a target tail probability of error;
- determining a first quality metric corresponding to said target tail probability;
- and
- selecting said second set of data rates a quality metric of which is greater than said first quality metric;
- and
- requesting a first data rate from said first set or a second data rate from said second set to achieve said target packet error rate.
A computer readable medium embodying a method for adaptive data rate selection in a communication system, the method comprising:
- selecting a target packet error rate;
- predicting a first set of data rates a packet error rate of which is smaller than said target packet error rate;
- predicting a second set of data rates a packet error rate of which is greater than said target packet error rate;
- and
- requesting a first data rate from said first set or a second data rate from said second set to achieve said target packet error rate, comprising:
- determining a packet error rate probability for each data rate;
- and
- determining said first data rate from said first set or said second data rate from said second set in accordance with said packet error rate probabilities.
Dependencies are inferred from the claim text.