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Content Provider | IEEE Xplore Digital Library |
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Author | Nahm, K. Helmy, A. Kuo, C.-C.J. |
Copyright Year | 2002 |
Abstract | In this research, we first investigate the cross-layer interaction between TCP and routing protocols in the IEEE 802.11 ad hoc network. On-demand ad hoc routing protocols respond to network events such as channel noise, mobility, and congestion in the same manner, which, in association with TCP, deteriorates the quality of an existing end-to-end connection. The poor end-to-end connectivity deteriorates TCP's performance in turn. Based on the well-known TCP-friendly equation, we conduct a quantitative study on the TCP operation range using static routing and long-lived TCP flows and show that the additive-increase, multiplicative-decrease (AIMD) behavior of the TCP window mechanism is aggressive for a typical multihop IEEE 802.11 network with a low-bandwidth-delay product. Then, to address these problems, we propose two complementary mechanisms, that is, the TCP fractional window increment (FeW) scheme and the Route-failure notification using BUIk-losS Trigger (ROBUST) policy. The TCP FeW scheme is a preventive solution used to reduce the congestion-driven wireless link loss. The ROBUST policy is a corrective solution that enables on-demand routing protocols to suppress overreactions induced by the aggressive TCP behavior. It is shown by computer simulation that these two mechanisms result in a significant improvement of TCP throughput without modifying the basic TCP window or the wireless MAC mechanisms. |
Sponsorship | IEEE Computer Society |
Starting Page | 458 |
Ending Page | 469 |
Page Count | 12 |
File Size | 2963678 |
File Format | |
ISSN | 15361233 |
Volume Number | 7 |
Issue Number | 4 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2008-04-01 |
Publisher Place | U.S.A. |
Access Restriction | One Nation One Subscription (ONOS) |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Routing protocols Spread spectrum communication Ad hoc networks Wireless LAN Network topology Wireless mesh networks Robustness Wireless sensor networks Bandwidth Transport protocols Mobile communication systems Wireless communication Network Protocols |
Content Type | Text |
Resource Type | Article |
Subject | Computer Networks and Communications Electrical and Electronic Engineering Software |
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