Enhancing TCP performance in multihop ad hoc networks

被引：0
|
作者：
Patil, Minakshee [1 ]
Patil, Ashwini [2 ]
机构：
[1] Rajarambapu Inst Technol, Dept Comp Sci & Engn, Rajaramnagar 415414, India
[2] Rajarambapu Inst Technol, Dept Informat Technol, Rajaramnagar 415414, India
来源：
2013 FOURTH INTERNATIONAL CONFERENCE ON COMPUTING, COMMUNICATIONS AND NETWORKING TECHNOLOGIES (ICCCNT) | 2013年
关键词：
Ad hoc networks; bandwidth-delay product (BDP); congestion window; contention; round-trip time (RTT); CHANNEL;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In multi hop ad hoc networks, performance of TCP degrades due to various reasons such as MAC contention, congestion, large round-trip time variations. In multi hop ad hoc network the over-injection of conventional TCP window mechanism results in severe contentions, and medium contention causes congestion. In multi hop ad hoc network, delay variance at MAC results in large round trip time variations. This paper proposes an Adaptive congestion window mechanism presents an enhancement in TCP round-trip time estimation using the information from the routing layer. This scheme reduces spurious round trip timeout and also reduces unnecessary retransmissions which are caused by link failures. This method significantly improves throughput performance of the network. Also, the round-trip time (RTT) is split into two parts: 1) congestion RTT and 2) contention RTT. Congestion RTT is used to determine BDP. Contention RTT is used to determine the contention situation. Simulation results show the improvements in TCP obtained through this approach in terms of throughput and delay performance.
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页数：6
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