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US 7,599,394 B2Granted
Common rate control method for reverse link channels in CDMA networks
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsPatrick Hosein, Tao Wu
Life of this patent
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Abstract
A mobile station dynamically adjusts its data transmission rate based on periodic load indications from a base station. The mobile station calculates a load tracking value based on two or more periodic load indications, and then calculates a rate change probability as a function of the load tracking value. The mobile station selectively changes its transmission rate responsive to a current load indication based on the rate change probability.
Claims42
A method of dynamically adjusting the transmission rate of a mobile station, comprising:
- receiving periodic load indications from a base station;
- calculating a load tracking value based on two or more periodic load indications;
- determining a rate change probability as a function of the load tracking value;
- and
- selectively changing the transmission rate of the mobile station responsive to a current rate control command based on the rate change probability, by comparing the rate change probability to a random probability value, and adjusting the data transmission rate of the mobile station based on the outcome of the comparison.
2 more elements
A mobile station comprising:
- a receiver for receiving periodic load indications from a base station;
- a transmitter for transmitting signals to the base station at a variable data transmission rate dependent on the load indications;
- a controller to vary the data transmission rate of the mobile station, said controller operative to:
- calculate a load tracking value based on two or more periodic load indications;
- determine a rate change probability as a function of the load tracking value;
- and
- selectively change the data transmission rate of the mobile station responsive to a current rate control command based on the rate change probability, by comparing the rate change probability to a random probability value, and adjusting the data transmission rate of the mobile station based on the outcome of the comparison.
4 more elements
Dependencies are inferred from the claim text.