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Method of dynamic random network coding in DTN environment

Authors :
Guang-hong DENG
Wan-hua CAO
Jian ZHANG
Li FENG
Xiong CHENG
Source :
Tongxin xuebao, Vol 35, Pp 76-86 (2014)
Publication Year :
2014
Publisher :
Editorial Department of Journal on Communications, 2014.

Abstract

With the dynamical features of mobility, intermittent connectivity and dynamic topology in delay tolerant net-work (DTN), the static random network coding methods become difficult to adapt to the applications in DTN environ-ment. For working out this problem, a dynamic random network coding transfer method (DRNC) was proposed. Based on the Markov channel model, it first computed the transmit speeds of every network channel according to the receive data states of nodes, and then constructed the network flow graphic with channel capacities at the source node, calculated and forecasted the current network multicast capacity, after that, the random network coding scenario was extended and tailored according to the multicast capacity to transmit data packages under DTN environment. The simulation results show that, compared with the traditional random network coding method with fixed multicast rate, the dynamic random network coding method has reduced the average latency of data packages and increased the delivery probability.

Details

Language :
Chinese
ISSN :
1000436X
Volume :
35
Database :
Directory of Open Access Journals
Journal :
Tongxin xuebao
Publication Type :
Academic Journal
Accession number :
edsdoj.65c60cc76cd24b4a9a91ce0ba5008ab4
Document Type :
article
Full Text :
https://doi.org/10.3969/j.issn.1000-436x.2014.02.011