An Enhancement of IEEE 802.11 for Efficient Operations in MANET

Apichet Chayabejara; Salahuddin Muhammad Salim Zabir; Norio Shiratori

An Enhancement of IEEE 802.11 for Efficient Operations in MANET

Apichet Chayabejara^*, Salahuddin Muhammad Salim Zabir, Norio Shiratori

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The IEEE 802.11 protocol solves hidden terminal problem using a four way handshaking mechanism. In this protocol, channel probing and reservation are made by using a small request-to-send (RTS) frame at the beginning of a transmission. This effectively detects and avoids collisions. However, the protocol lacks the ability to release or reallocate a channel that was reserved but not used. For multihops, like Mobile Ad hoc NETworks (MANET), this often keeps the channel unnecessarily inaccessible resulting in inefficient channel utilization. In this paper, we therefore propose a new mechanism to improve performance of IEEE 802.11 in MANET. Our mechanism utilizes channel capacity that is otherwise wasted. This leads to a higher yield in throughput by up to 10%. In addition, our proposed mechanism is free from compatibility problems with standard IEEE 802.11. Results from extensive simulations verify the effectiveness of our scheme.

Original language	English
Title of host publication	Proceedings of the IASTED International Conference on Parallel and Distributed Computing and Systems
Editors	T. Gonzalez
Pages	201-206
Number of pages	6
Volume	15
Edition	1
Publication status	Published - 2003
Event	Proceedings of the Fifteenth IASTED International Conference on Parallel and Distributed Computing and Systems - Marina del Rey, CA Duration: 2003 Nov 3 → 2003 Nov 5

Other

Other	Proceedings of the Fifteenth IASTED International Conference on Parallel and Distributed Computing and Systems
City	Marina del Rey, CA
Period	03/11/3 → 03/11/5

Keywords

IEEE 802.11
MANET
Network Protocols
Wireless Networks

ASJC Scopus subject areas

Development
Computer Networks and Communications
Hardware and Architecture

Cite this

An Enhancement of IEEE 802.11 for Efficient Operations in MANET. / Chayabejara, Apichet; Zabir, Salahuddin Muhammad Salim; Shiratori, Norio.

Proceedings of the IASTED International Conference on Parallel and Distributed Computing and Systems. ed. / T. Gonzalez. Vol. 15 1. ed. 2003. p. 201-206.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Chayabejara, A, Zabir, SMS & Shiratori, N 2003, An Enhancement of IEEE 802.11 for Efficient Operations in MANET. in T Gonzalez (ed.), Proceedings of the IASTED International Conference on Parallel and Distributed Computing and Systems. 1 edn, vol. 15, pp. 201-206, Proceedings of the Fifteenth IASTED International Conference on Parallel and Distributed Computing and Systems, Marina del Rey, CA, 03/11/3.

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AB - The IEEE 802.11 protocol solves hidden terminal problem using a four way handshaking mechanism. In this protocol, channel probing and reservation are made by using a small request-to-send (RTS) frame at the beginning of a transmission. This effectively detects and avoids collisions. However, the protocol lacks the ability to release or reallocate a channel that was reserved but not used. For multihops, like Mobile Ad hoc NETworks (MANET), this often keeps the channel unnecessarily inaccessible resulting in inefficient channel utilization. In this paper, we therefore propose a new mechanism to improve performance of IEEE 802.11 in MANET. Our mechanism utilizes channel capacity that is otherwise wasted. This leads to a higher yield in throughput by up to 10%. In addition, our proposed mechanism is free from compatibility problems with standard IEEE 802.11. Results from extensive simulations verify the effectiveness of our scheme.

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An Enhancement of IEEE 802.11 for Efficient Operations in MANET

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Keywords

ASJC Scopus subject areas

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