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Performance Analysis of Concurrent Transmission with Reducing Handshakes in Multihop Wireless Mesh Networks (WMNs)

Gannapathy, V.R. , and Ahmad M.R. , and Suaidi M.K. , and Johal M.S. , (2009) Performance Analysis of Concurrent Transmission with Reducing Handshakes in Multihop Wireless Mesh Networks (WMNs). Journal of Telecommunication, Electronics and Computer Engineering, 1 (1). pp. 69-76. ISSN 2180 - 1843

Full text not available from this repository.

Official URL: http://www.utem.edu.my

Affiliations

Universiti Teknikal Malaysia Melaka, Faculty of Electronics and Computer Engineering
Universiti Teknikal Malaysia Melaka, Faculty of Electronics and Computer Engineering
Universiti Teknikal Malaysia Melaka, Faculty of Electronics and Computer Engineering
Universiti Teknikal Malaysia Melaka, Faculty of Electronics and Computer Engineering

Abstract

The IEEE 802.11 Distributed Coordination Function (DCF) Medium Access Control(MAC) protocol continues to suffer from
throughput degradation when directly applied in multi-hop Wireless Mesh Network (WMN). The Request-to-Send/Clear-to-Send (RTS/CTS) signaling partially solved hidden node
problems however the exposed node problems remain unaddressed. These exposed nodes lead to throughput degradation especially when the transmission in multi-hop networks is considered. The major reason for this poor
performance is the restricted nature of the IEEE 802.11 MAC, which does not allow exposed nodes to initiates its transmission for the entire duration of ongoing transmission. Moreover,since multi-hop communication such as
wireless mesh network transfer the data packet via intermediate nodes, the amount of control handshakes that take place at each intermediate node significantly reduce the throughput. This project proposes a set of enhancement to the existing IEEE 802.11 DCF MAC by enabling concurrent transmission by the exposed nodes and reduces the amount of handshakes required at every hop until the data packet reaches its destination. Analytical models are developed for
analytical study of MAC protocols operating in multi-hop mesh networks and simulated over quasi-static Rayleigh fading channel. The multi-hop network performances are evaluated in terms of throughput and delay. The protocol
outperforms the existing IEEE DCF MAC with more than 260% increase in overall throughput of multi-hop WMN.

Item Type:Journal
Keywords:Concurrent Transmission; Exposed Node Problems; Reduce Handshakes; MAC Protocol; Multi-hop WMNs.
Subjects:T Technology, Engineering
ID Code:9861

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