A contention resolution based on segment redundant recombination in OBS networks

CHEN Hehe

doi:10.7510/jgjs.issn.1001-3806.2016.04.016

To decrease the byte loss probability of data burst, reduce the time delay cost and grantee the high usage efficiency of channel resource, a novel contention resolution was proposed based on segment redundant recombination in optical burst switching(OBS) networks. In this scheme, a special channel type called back-off channel was classified. When two bursts contents, the lower priority one will be separated and the segments will be sent back to upstream node by back-off channels. To grantee high efficient usage of channel resources, the segments will be cloned as many copies to fill the void of data channels. These copies will be recombined with the original data burst as virtual burst which can be separated flexibly. Moreover, the priority of the burst on back-off contention was set to the lowest to balance out the cost of segmentation copies. The simulation results show that, this contention resolution method reduces packet loss rate and time delay in OBS networks effectively, and use the channel resources efficiently.

A contention resolution based on segment redundant recombination in OBS networks

1. Department of Electronic and Electrical Engineering, Wenzhou Vocational and Technical College, Wenzhou 325000, China

Received Date: 2015-04-10

Accepted Date: 2015-05-13

Available Online: 2016-07-25

Abstract: To decrease the byte loss probability of data burst, reduce the time delay cost and grantee the high usage efficiency of channel resource, a novel contention resolution was proposed based on segment redundant recombination in optical burst switching(OBS) networks. In this scheme, a special channel type called back-off channel was classified. When two bursts contents, the lower priority one will be separated and the segments will be sent back to upstream node by back-off channels. To grantee high efficient usage of channel resources, the segments will be cloned as many copies to fill the void of data channels. These copies will be recombined with the original data burst as virtual burst which can be separated flexibly. Moreover, the priority of the burst on back-off contention was set to the lowest to balance out the cost of segmentation copies. The simulation results show that, this contention resolution method reduces packet loss rate and time delay in OBS networks effectively, and use the channel resources efficiently.

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Reference (15)

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A contention resolution based on segment redundant recombination in OBS networks

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通讯作者: 陈斌, bchen63@163.com

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