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Improved MAC layer protocol of Wifi for satellite network

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  • Sili Liu
  • Jianyun Chen
  • Chao Ma
  • Lingxiao Zhu

Abstract

With the development and universal application of satellite technology, an important way to expand the function of satellites is setting up inter-satellite networks to make them work together. Traditional satellite networking methods generally adopt a fixed time slot allocation method, which is not suitable for small satellite groups with low latency and high throughput requirements. In order to solve this problem, it has been proposed to apply the traditional Wifi protocol in satellite networking. As there are differences between satellite networks and terrestrial networks, it’s necessary to improve the traditional 802.11 protocol. The Media Access Control (MAC) protocol in 802.11 is improved in this paper, which mainly includes the adaptive algorithm of maximum contention window size and the growth algorithm of Contention Window (CW) size. The maximum contention window is adjusted according to the conflict state of the current network, which makes the network accommodate more satellite nodes. The CW growth algorithm improves the traditional Binary Exponential Back-off (BEB) algorithm, where the CW is designed according to the priority of the data frame or the network load. In this way, high-priority satellite accusation information will have higher reliability or tolerate greater network load.

Suggested Citation

  • Sili Liu & Jianyun Chen & Chao Ma & Lingxiao Zhu, 2019. "Improved MAC layer protocol of Wifi for satellite network," PLOS ONE, Public Library of Science, vol. 14(9), pages 1-13, September.
    • Handle: RePEc:plo:pone00:0221551
    DOI: 10.1371/journal.pone.0221551
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