| 摘要 |
A media access controller (MAC) configurable for first and second modes of operation is provided. The MAC includes an uplink processor coupled to a plurality of uplink channels, a downlink processor coupled to a downlink, and a MAP parser coupled to the downlink processor. The downlink processor is configured to provide information to the downlink channel, including bandwidth allocation map ("MAP") messages. Each MAP message is associated with one of the plurality of uplink channels or an uplink channel associated with one or more other MACs. The MAP parser is configured to control the MAC to receive information from a first set of one or more of the plurality of uplink channels in first mode and from a second set of one or more of the plurality of uplink channels in second mode.
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