Method and apparatus for supervising a potentially gated signal in a wireless communication system
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United States of America Patent
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May 30, 2006
Grant Date -
Jun 27, 2002
app pub date -
Jun 23, 1999
filing date -
Jun 23, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention is a novel and improved method and apparatus for supervising a potentially gated channel in a wireless communication system. The first method is an extension of the method used in IS-95 with empty frames simply ignored, but with potentially different thresholds. The mobile station maintains a counter of consecutive bad frames, COUNT1, and a counter of consecutive good frames, COUNT2. COUNT1 and COUNT2 are set to zero at the beginning of a call. For each frame received, the mobile station determines if it is a good frame, a bad frame, or an empty frame. If the received frame is a good frame, COUNT1 is reset to zero and COUNT2 is incremented by 1. If the received frame is a bad frame, COUNT1 is incremented by one and COUNT2 is reset to zero. If the received frame is an empty frame, COUNT1 and COUNT2 are unchanged. If COUNT1 reaches a threshold value, TH1, the mobile station shall disable its transmitter. Thereafter, if COUNT2 reaches a threshold value, TH2, the mobile station shall re-enable its transmitter. The mobile station resets its fade timer to X seconds whenever COUNT2 is greater than or equal to TH3.
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