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Default assignment of scheduled transmissions

  • US 7,715,319 B2
  • Filed: 06/29/2007
  • Issued: 05/11/2010
  • Est. Priority Date: 02/06/2007
  • Status: Active Grant
First Claim
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1. A method for conducting communications over a shared communication medium involving a plurality of nodes, the method comprising:

  • (a) transmitting a request from a first node in the plurality of nodes, the shared communication medium organized to include a request signal space and a scheduled transmission signal space, the request signal space including a plurality of request segments each having a different location within the request signal space, the 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 that is one of the plurality of request segments;

    (b) obtaining an assignment, in a first tier of assignments, associating the request with a scheduled transmission segment selected from the plurality of scheduled transmission segments, the assignment taking into account location of the request within the request signal space;

    (c) from the first node, transmitting a data transmission in the scheduled transmission segment associated with the request in accordance with the assignment; and

    (d) wherein the plurality of scheduled transmission segments includes at least one default use segment, the at least one default use segment being available for use by a default entity if the at least one default use segment is not assigned in the first tier of assignments.

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