Contention-based communications
First Claim
1. A method for conducting communications involving a plurality of access nodes using a shared communication medium, the method comprising:
- sending a message over the shared communication medium from a first access node in the plurality of access nodes, the shared communication medium organized to include an allocation of node identification signal space and an allocation of data transmission signal space, the allocation of node identification signal space including a plurality of contention-free node identification segments each having a different location within the allocation of node identification signal space, each of the plurality of access nodes being associated with a unique one of the plurality of contention-free node identification segments, the allocation of data transmission signal space including a data transmission segment, the data transmission segment available for data transmission from two or more of the plurality of access nodes, the message including a node identification portion and a data transmission portion;
wherein the node identification portion is transmitted in the allocation of node identification signal space, and the node identification portion occupies a contention-free node identification segment that is one of the plurality of contention-free node identification segments;
wherein the data transmission portion is transmitted in the allocation of data transmission signal space, and the data transmission portion occupies the data transmission segment;
wherein a measure of occupancy of the shared communication medium is based on a number of occupied contention-free node identification segments detected in the allocation of node identification signal space; and
wherein, depending on the measure of occupancy of the shared communication medium, the data transmission portion in the allocation of data transmission signal space is processed.
5 Assignments
0 Petitions
Accused Products
Abstract
Methods and apparatus are presented for conducting communications using a shared communication medium. A message is sent over the shared communication medium. The shared communication medium is organized to include an allocation of node identification signal space and an allocation of data transmission signal space. The allocation of node identification signal space includes a plurality of node identification segments. The allocation of data transmission signal space includes a data transmission segment. The message includes a node identification portion and a data transmission portion. The node identification portion is transmitted in the allocation of node identification signal space and occupies a node identification segment. The data transmission portion is transmitted in the allocation of node identification signal space and occupies the data transmission segment.
133 Citations
26 Claims
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1. A method for conducting communications involving a plurality of access nodes using a shared communication medium, the method comprising:
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sending a message over the shared communication medium from a first access node in the plurality of access nodes, the shared communication medium organized to include an allocation of node identification signal space and an allocation of data transmission signal space, the allocation of node identification signal space including a plurality of contention-free node identification segments each having a different location within the allocation of node identification signal space, each of the plurality of access nodes being associated with a unique one of the plurality of contention-free node identification segments, the allocation of data transmission signal space including a data transmission segment, the data transmission segment available for data transmission from two or more of the plurality of access nodes, the message including a node identification portion and a data transmission portion; wherein the node identification portion is transmitted in the allocation of node identification signal space, and the node identification portion occupies a contention-free node identification segment that is one of the plurality of contention-free node identification segments; wherein the data transmission portion is transmitted in the allocation of data transmission signal space, and the data transmission portion occupies the data transmission segment; wherein a measure of occupancy of the shared communication medium is based on a number of occupied contention-free node identification segments detected in the allocation of node identification signal space; and wherein, depending on the measure of occupancy of the shared communication medium, the data transmission portion in the allocation of data transmission signal space is processed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for conducting communications involving a plurality of access nodes using a shared communication medium, the method comprising:
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receiving a message from a first access node in the plurality of access nodes over the shared communication medium, the shared communication medium organized to include an allocation of node identification signal space and an allocation of data transmission signal space, the allocation of node identification signal space including a plurality of contention-free node identification segments each having a different location within the allocation of node identification signal space, each of the plurality of access nodes being associated with a unique one of the plurality of contention-free node identification segments, the allocation of data transmission signal space including a data transmission segment, the data transmission segment available for data transmission from two or more of the plurality of access nodes, the message including a node identification portion and a data transmission portion; wherein the node identification portion is transmitted in the allocation of node identification signal space, and the node identification portion occupies a contention-free node identification segment that is one of the plurality of contention-free node identification segments; wherein the data transmission portion is transmitted in the allocation of data transmission signal space, and the data transmission portion occupies the data transmission segment; determining a measure of occupancy of the shared communication medium based on a number of occupied contention-free node identification segments detected in the allocation of node identification signal space; and depending on the measure of occupancy of the shared communication medium, processing the data transmission portion in the allocation of data transmission signal space.
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14. An apparatus for conducting communications involving a plurality of access nodes using a shared communication medium, comprising:
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a first access node in the plurality of access nodes configured to send a message over the shared communication medium, the shared communication medium organized to include an allocation of node identification signal space and an allocation of data transmission signal space, the allocation of node identification signal space including a plurality of contention-free node identification segments each having a different location within the allocation of node identification signal space, each of the plurality of access nodes being associated with a unique one of the plurality of contention-free node identification segments, the allocation of data transmission signal space including a data transmission segment, the data transmission segment available for data transmission from two or more of the plurality of access nodes, the message including a node identification portion and a data transmission portion; wherein the node identification portion is transmitted in the allocation of node identification signal space, and the node identification portion occupies a contention-free node identification segment that is one of the plurality of contention-free node identification segments; wherein the data transmission portion is transmitted in the allocation of data transmission signal space, and the data transmission portion occupies the data transmission segment; wherein a measure of occupancy of the shared communication medium is based on a number of occupied contention-free node identification segments detected in the allocation of node identification signal space; and wherein, depending on the measure of occupancy of the shared communication medium, the data transmission portion in the allocation of data transmission signal space is processed. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An apparatus for conducting communications using a shared communication medium involving a plurality of access nodes, comprising:
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a second access node configured to receive a message from a first access node over the shared communication medium, the shared communication medium organized to include an allocation of node identification signal space and an allocation of data transmission signal space, the allocation of node identification signal space including a plurality of contention-free node identification segments each having a different location within the allocation of node identification signal space, each of the plurality of access nodes being associated with a unique one of the plurality of contention-free node identification segments, the allocation of data transmission signal space including a data transmission segment, the data transmission segment available for data transmission from two or more of the plurality of access nodes, the message including a node identification portion and a data transmission portion; wherein the node identification portion is transmitted in the allocation of node identification signal space, and the node identification portion occupies a contention-free node identification segment that is one of the plurality of contention-free node identification segments; wherein the data transmission portion is transmitted in the allocation of data transmission signal space, and the data transmission portion occupies the data transmission segment; wherein the second node is configured to determine a measure of occupancy of the shared communication medium based on a number of occupied contention-free node identification segments detected in the allocation of node identification signal space; and wherein the second access node is configured to process the data transmission portion in the allocation of data transmission signal space depending on the measure of occupancy of the shared communication medium.
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Specification