| 摘要 |
A method (200) and apparatus (100, 402) are shown for determining whether first and second data messages in a communication system are duplicates. The method comprises forming (304) from the first and second data messages a corresponding pair of first and second message identifiers (120, 126). The identifiers (120, 126) comprise bits generated from first and second message characteristic values calculated (206) from portions (118, 124) of the first and second data messages. The method further comprises comparing 316 the first and second message identifiers (120, 126) to determine whether the first and second message identifiers (120, 126) are substantially equivalent to each other, substantially equivalent identifiers (120, 126) being indicative that the first and second data messages are duplicates.
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