发明名称 |
Error detection scheme for ARQ systems |
摘要 |
<p>An error detection and correction scheme for automatic repeat request (ARQ) systems in which multiple copies of a received data packet comprising a CRC field are compared to each other to determine the non-unanimous bit positions. If the number of bit positions thus determined lies under a threshold, tentative packets with all possible configurations at the non-unanimous bit positions are tested on validity by CRC check. In order to amount for the changes in the header fields between the multiple copies of a received data packet, the CRC fiels are calculated before and after modifying the variable header fields of at least some of multiple copies of said received data packets. <IMAGE></p> |
申请公布号 |
EP1154576(A2) |
申请公布日期 |
2001.11.14 |
申请号 |
EP20010119646 |
申请日期 |
1997.09.22 |
申请人 |
ERICSSON, INC. |
发明人 |
IRVIN, DAVID R.;KHAYRALLAH, ALI S. |
分类号 |
H03M13/00;H03M13/09;G06F11/10;G11B20/18;H03M13/03;H04L1/00;H04L1/16;H04L1/18;(IPC1-7):H03M13/00 |
主分类号 |
H03M13/00 |
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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