Throughput Improvement in Wireless Multi-Hop Ad-Hoc Networks Using Load Control

Jun-Han OH
Jong-Tae LIM

Publication
IEICE TRANSACTIONS on Communications   Vol.E92-B    No.1    pp.314-317
Publication Date: 2009/01/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.314
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Network
Keyword: 
ad-hoc,  load control,  throughput,  802.11 MAC,  

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Summary: 
IEEE 802.11 MAC is the most commonly used protocol in multi-hop ad-hoc networks which need no infrastructure. In multi-hop ad-hoc networks based on IEEE 802.11, since nodes try transmitting their packets at every possible slot, there is a high packet loss probability. This degrades network performance attributes such as throughput and fairness. In this paper, we focus on achieving the maximum throughput of the given network topology by adding extra backoff time to random backoff time based on IEEE 802.11. Specifically, the optimal load rate is obtained with constraints of Carrier Sensing Multiple Access/Collision Avoidance (CSMA/CA) mechanism.