Method and apparatus for multi-channel reverse link outer-loop power control
AssigneeQUALCOMM Incorporated
InventorTao Chen
Life of this patent
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Abstract
In a disclosed embodiment, a maintain and adjust threshold module determines the desired signal to noise and interference ratio for a first channel. Next, a delta computation module produces a threshold delta, which is then added to a base threshold by way of an adder. The resulting sum is the outer-loop set point that is used in a comparator. The comparator compares a receive signal strength with the outer-loop threshold. The comparator output is inputted to a generate up/down command module. The generate up/down command module sends a down command to the mobile unit if receive signal strength is greater than the outer-loop threshold, otherwise it sends an up command.
Claims21
A receiver in a wireless communications system including a reverse link fundamental channel and a reverse link supplemental channel, said receiver comprising:
- a delta computation module configured to produce a threshold delta;
- a maintain and adjust threshold module configured to accept a frame erasure rate from said reverse link fundamental channel;
- an adder configured to generate an outer-loop set point by adding a base threshold outputted by said maintain and adjust threshold module to said threshold delta outputted by said delta computation module;
- a comparator configured to compare said outer-loop set point with a receive signal strength, an output of said comparator being utilized to adjust a transmit power of a mobile unit.
A method for generating a target signal to noise and interference ratio in a receiver, said method comprising steps:
- detecting a frame erasure from a reverse link fundamental channel;
- measuring a frame erasure rate;
- maintaining and adjusting a base threshold;
- determining a threshold delta;
- adding said threshold delta to said base threshold to produce a outer-loop set point.
Dependencies are inferred from the claim text.