发明名称 |
DISCONTINUOUS TRANSMISSION (DTX) DETECTION USING DECODER METRIC |
摘要 |
<p>A method detects an absence of a transmitted frame in a wireless communications system that operates with a discontinuous transmission (DTX) protocol between a transmitter and a receiver. The method includes decoding a received signal over a frame period to determine a cumulative metric; normalizing the cumulative metric and comparing the normalized cumulative metric to a threshold for determining whether the frame was a transmitted frame or a non-transmitted frame. The determined cumulative metric may be a maximum cumulative metric or a zero state cumulative metric. The wireless communications system may be a CDMA system, the receiver may be contained within a mobile station, and the determination of whether the frame was a transmitted frame or a non-transmitted frame can be employed, as one non-limiting example, during execution of a power control algorithm.</p> |
申请公布号 |
EP1588538(B1) |
申请公布日期 |
2015.04.08 |
申请号 |
EP20040706241 |
申请日期 |
2004.01.29 |
申请人 |
NOKIA TECHNOLOGIES OY |
发明人 |
TAPANINEN, JUKKA;KENNEY, THOMAS;TRAN, JEAN-MARIE |
分类号 |
H04M13/00;H04B7/00;H04L1/00 |
主分类号 |
H04M13/00 |
代理机构 |
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代理人 |
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主权项 |
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