A cross layer approach for improving the TCP quality-of-service parameters over the IEEE 802.11.ac wireless networks

Document Type : Original Article

Author

Assistant Professor, Technical and Engineering Faculty, Ayatollah Amoly Branch, Islamic Azad University, Amoly, Iran

Abstract

The rapid growth of the Internet in the last decade together with the growing importance of wireless communications pose new challenges to TCP as a reliable transmission protocol. The TCP regulates the traffic based on controlling congestion and it inherently assumes that each packet loss is a sign of congestion. Unfortunately, the TCP performance has degraded as it has to cope with new types of packet loss due to noisy wireless channels in wireless networks, variable channel bandwidth and random bit error rate, which could mislead the TCP to shape the traffic and reduce the throughput. In order to find an effective solution, the packet loss across wireless links must be distinguished from the congestion loss. In this paper, some significant characteristics of wireless links and their effects on TCP performance in wireless networks is presented. Meanwhile, a new cross layer approach to improve TCP fairness and throughput is designed using a combination of the MLFQ technique and timer in the second-tier wireless local area network. The experimental results are verified using the NS-2.3 simulator. The assessment results, the throughput, the end-to-end delay and jitter in various scenarios confirm the efficiency of the proposed model.

Keywords

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References

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Electronic and Cyber Defense
Volume 10, Issue 1 - Serial Number 37
Serial No. 37, Spring Quarterly
May 2022
Pages 109-117

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History

  • Receive Date: 11 June 2021
  • Revise Date: 19 September 2021
  • Accept Date: 13 December 2021
  • Publish Date: 22 May 2022

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