Method and system for adjusting downlink outer loop power to...

Details Method and system for adjusting downlink outer loop power to... Method and system for adjusting downlink outer loop power to...

2007-09-04

2007-09-04

Anderson, Matthew (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S115100, C455S506000, C455S069000

Reexamination Certificate

active

10771576

ABSTRACT:
A wireless communication system and method for controlling transmission power to maintain a received signal-to-interference ratio (SIR) as close as possible to a target SIR. A received quality is maintained as close as possible to a target quality based on block error rate (BLER). When a target BLER is converted to an initial target SIR, an error may occur due to a channel condition mismatch, since the target SIR required for the target BLER varies with channel conditions. An outer loop power control process is used to set a target SIR for each coded composite transport channel (CCTrCH) based on the required target BLER. The process adjusts a SIR step size parameter to maximize the convergence speed of the process.

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