| 摘要 |
Methods and apparatuses are presented for conducting communications over a shared communication medium, involving (a) sending a request from a first node, the shared communication medium organized to include (i) a request signal space including a plurality of request segments each having a different location within the request signal space and (ii) a scheduled transmission signal space including a plurality of scheduled transmission segments each having a different location within the scheduled transmission signal space, the request sent in a request segment, (b) obtaining an assignment associating the request with a scheduled transmission segment, the assignment taking into account location of the request within the request signal space, (c) from the first node, sending a current data transmission in the scheduled transmission segment associated with the request, and (d) wherein a portion of the current data transmission includes a piggyback request from the first node for a subsequent data transmission.
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