发明名称 |
PCM LINK FAULT DETECTION AND LOST BLOCK HANDLING |
摘要 |
A digital cellular communications system has a bidirectional pulse code modulation link for conveying encoded speech and control data in the form of blocks, a switching unit coupled to a first end of the PCM link, and a base station coupled to a second end of the PCM link. The switching unit includes a speech encoder for encoding speech signals, an error detection code generator for generating an error detection code from the encoded speech signal. The base station has a PCM link error detector for signalling the existence of an error in a received block in response to the received block containing an error. The base station further includes a downlink error handler coupled to the PCM link error detector, for discarding a received block in response to the signal indicating the existence of an error therein, and for substituting therefor a default control message to be relayed to a mobile station, whereby the mobile station, in response to receiving the default control message, performs no operation other than a bad frame masking operation.
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申请公布号 |
CA2142903(A1) |
申请公布日期 |
1995.01.12 |
申请号 |
CA19942142903 |
申请日期 |
1994.06.22 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON |
发明人 |
MOLIN, ANDERS K.;FALL, RJAN P. S.;SELLIN, PATRIK C.;WILHELMSSON, LARS J. |
分类号 |
H04L1/16;H04B7/26;H04L1/00;H04W24/00;H04W84/02;(IPC1-7):H04L1/18 |
主分类号 |
H04L1/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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