| 摘要 |
In a system in which multiple remote units compete (104) for limited communication resources, a remote unit (104A) accesses the system by randomly selecting a first sequence from a set of predetermined sequences. The remote unit (140A) transmits a data bit stream modulated with the first sequence beginning at one of a set of recurring admission boundaries. If the remote unit (104A) determines that the data bit stream has not been successfully received at a hub station (100), t he remote unit (104A) randomly selects a second sequence from the set of predetermined sequences. The remote unit (104A) transmits the dat a bit stream modulated with the second sequence beginning at one of the set of recurring admission boundaries.
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