The Eifel algorithm: making TCP robust against spurious retransmissions
ACM SIGCOMM Computer Communication Review
F-RTO: an enhanced recovery algorithm for TCP retransmission timeouts
ACM SIGCOMM Computer Communication Review
Assessing the Effectiveness of IEEE 802.11e in Multi-Hop Mobile Network Environments
MASCOTS '04 Proceedings of the The IEEE Computer Society's 12th Annual International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems
International Journal of Communication Systems
Exploring the performance of TCP vegas in mobile ad hoc networks: Research Articles
International Journal of Communication Systems
Analysis of the Interaction between TCP Variants and Routing Protocols in MANETs
ICPPW '05 Proceedings of the 2005 International Conference on Parallel Processing Workshops
TCP Performance in IEEE 802.11-Based Ad Hoc Networks with Multiple Wireless Lossy Links
IEEE Transactions on Mobile Computing
On making TCP robust against spurious retransmissions
Computer Communications
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The bandwidth is one of the most precious resources in Mobile Ad Hoc Networks (MANETs); their network protocols should therefore be able to achieve an increase in efficiency of bandwidth utilisation. TCP, which implements flow control to regulate the network traffic, plays a significant role in shaping the workload of the network. However, spurious TCP retransmissions can increase the link utilisation, consequently limiting the amount of spare bandwidth available as extensively reported in the literature. This problem is exacerbated by the presence of high priority traffic and traffic differentiation introduced in IEEE 802.11e. In this paper, we focus on the optimisation of TCP for resource efficiency, by limiting the number of contention-induced retransmissions. Using a cross-layer technique, TCP can be notified of the medium contention state and adjusts its retransmission timer accordingly. Our simulation results demonstrate the effectiveness of our proposal in various scenarios. A 15% gain in resource utilisation is obtained, fewer packets are retransmitted thus reducing the overall power consumption and TCP goodput is improved.