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Method and apparatus for use in a network of the ethernet type, to improve fairness by controlling collision backoff times in the event of channel capture
Method and apparatus for use in a network of the ethernet type, to improve fairness by controlling collision backoff times in the event of channel capture
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机译:在以太网类型的网络中使用的方法和设备,以在信道捕获的情况下通过控制冲突退避时间来提高公平性
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摘要
A technique for modifying the IEEE 802.3 standard for selecting backoff times in a Carrier Sense Multiple Access with Collision Detection (CSMA/CD) network, in the event that a collision is sensed by a node that has captured the network communication channel. If there is a small number of active nodes on the network, one node may capture the channel and the standard backoff algorithm makes it increasingly unlikely for another node to transmit. The new technique provides for less aggressive, i.e. longer, backoff times before at least the first retransmission attempt made by a node that has captured the channel. Three specific examples of the technique are disclosed. Even though the invention represents a departure from the standard CSMA/CD backoff algorithm, the overall average backoff times provided by the invention can be selected to be consistent with the average times provided by the standard. Moreover, nodes using the invention interoperate successfully with nodes that do not.
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