201. MAC mechanism based on link prediction and network coding
- Author
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HANGFeng-jun S, juan GONGWen, and Zhe GENG
- Subjects
link quality estimation ,network coding ,path optimization ,optimal factor ,Telecommunication ,TK5101-6720 - Abstract
A MAC mechanism was proposed based on network coding and link prediction for wireless sensor network. Firstly, an adaptive-window scheme was given based on EasiLQE which uses improved EWMA link quality estimation method and combines the methods of hardware and software, so the accuracy is increased.As a result of the instantaneous active detection, reaction rate became more rapid when unexpected situation was occurring in the network. Secondly, a MAC protocol was improved based on the existing MAC protocol. In the protocol improved, high-level secondary nodes around the path determined is increased by the routing module using the cast nature of wireless networks that al-ready exists rationally, so that significantly increased the network coding opportunity, without many problems caused by the concentrating flows. Finally, to seek a more appropriate balance between data diffusion and coding opportunities, the optimal factor was discussed. Experiment results show that this improved MAC protocol can increase network throughput and balance the load of the whole network effectively by using over-heard of nodes rationally, without causing concen-trating flows at the same time.
- Published
- 2016
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