Collision handling and synchronization of nodes in a csma/ca network

Inactive Publication Date: 2013-03-07
ITRAN COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]There is further provided in accordance with the invention, a modem for use in a Power Line Carrier (PLC) based communication system connected to a power line utility comprising a transmitter operative to generate and transmit packets over the power line utility, each packet comprising a preamble portion consisting of preamble symbols and a data portion co

Problems solved by technology

When two nodes are transmitting at the same time on the channel and a collision occurs, this method of synchronization may fail as described below, creating a scenario where nodes become unsynchronized wi

Method used

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  • Collision handling and synchronization of nodes in a csma/ca network
  • Collision handling and synchronization of nodes in a csma/ca network
  • Collision handling and synchronization of nodes in a csma/ca network

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Embodiment Construction

[0019]As will be appreciated by one skilled in the art, the present invention may be embodied as a system, method, computer program product or any combination thereof. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, micro-code, etc.) or an embodiment combining software and hardware aspects that may all generally be referred to herein as a “circuit,”“module” or “system.” Furthermore, the present invention may take the form of a computer program product embodied in any tangible medium of expression having computer usable program code embodied in the medium.

[0020]Any combination of one or more computer usable or computer readable medium(s) may be utilized. The computer-usable or computer-readable medium may be, for example but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device. More specific examples (a non-

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Abstract

A system and method of retaining synchronization in a shared medium communications network. Synchronization is maintained between colliding transmitters and receivers by providing a Collision Based Inter Frame Space (CBIFS) which is a time period at least as long as the longest frame and that starts from a point in time common to all nodes such as after the backoff period (beginning of the PHY header). After a collision is detected in either a transmitting or receiving node, the node waits the remaining time in the CBIFS period. For transmitters the node waits the remaining time period from the end of the frame transmission until the CBIFS period terminates. For receivers, the node waits from the end of the preamble until the CBIFS period terminates.

Description

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Claims

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Application Information

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Owner ITRAN COMM
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