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Adaptive backoff scheme for ad hoc networks based on IEEE 802.11
Author(s) -
Wu ChienMin,
Hou TingChao,
Leou MawLin,
Liaw YiChing,
Chan MingChieh
Publication year - 2010
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.1135
Subject(s) - computer science , goodput , distributed coordination function , exponential backoff , computer network , wireless ad hoc network , multiple access with collision avoidance for wireless , ieee 802.11 , hidden node problem , carrier sense multiple access with collision avoidance , node (physics) , network packet , hop (telecommunications) , vehicular ad hoc network , network allocation vector , channel (broadcasting) , throughput , optimized link state routing protocol , wireless , wireless network , telecommunications , routing protocol , structural engineering , engineering , wi fi array
The performance of backoff scheme plays an important role in designing efficient Medium Access Protocols for ad hoc networks. In this paper, we propose an adaptive backoff scheme and evaluate the performance of the proposed scheme for ad hoc networks. The backoff mechanism devised by us grants a node access to the channel based on its probability of collision for a transmitted frame in comparison to the nodes in the two‐hop contention area. We use both an analytical model and simulation experiments to evaluate the performance of our adaptive backoff mechanism in an ad hoc network. The results show that our protocol exhibits a significant improvement in power saving, end‐to‐end goodput, packet delivery ratio, and hop‐put, compared with the existing IEEE 802.11 DCF. Copyright © 2010 John Wiley & Sons, Ltd.