Multi-channel enhancements for IEEE 802.11-based multi-hop ad-hoc wireless networks

Yong Suk Lee, Woong Chul Choi, Suk Joong Kang, Seong Je Cho

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Collision avoidance is critical for the performance of contention based medium access mechanism such as CSMA. In this paper, the IEEE 802.11-based MAC protocol is enhanced for performance improvements in multi-hop ad-hoc wireless networks. The protocol behavior of hidden terminals in carrier sensing range[10] is important for end-to-end performance. There are several mechanisms defined in IEEE 802.11 standard such as IFS(Inter Frame Space), but we address a problem that such time interval is not long enough to avoid unnecessary collisions by the hidden terminals in carrier sensing range. We have conducted a comprehensive simulation to study performance improvement. The simulation results indicate that the performance is increased and the number of the dropped packets due to unnecessary collisions can be significantly reduced as much as a half.

Original languageEnglish
Title of host publicationEmerging Direction in Embedded and Ubiquitous Computing - EUC 2007 Workshops
Subtitle of host publicationTRUST, WSOC NCUS, UUWSN, USN, ESO, and SECUBIQ, Proceedings
Pages82-92
Number of pages11
Publication statusPublished - 2007 Dec 1
Externally publishedYes
Event2007 IFIP International Conference on Embedded and Ubiquitous Computing, EUC 2007 Workshops - Taipei, Taiwan, Province of China
Duration: 2007 Dec 172007 Dec 20

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4809 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

Other2007 IFIP International Conference on Embedded and Ubiquitous Computing, EUC 2007 Workshops
CountryTaiwan, Province of China
CityTaipei
Period07/12/1707/12/20

Keywords

  • Ad-hoc wireless networks
  • CAI (Collision Avoidance Interval)
  • Collision
  • IEEE 802.11
  • MAC

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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  • Cite this

    Lee, Y. S., Choi, W. C., Kang, S. J., & Cho, S. J. (2007). Multi-channel enhancements for IEEE 802.11-based multi-hop ad-hoc wireless networks. In Emerging Direction in Embedded and Ubiquitous Computing - EUC 2007 Workshops: TRUST, WSOC NCUS, UUWSN, USN, ESO, and SECUBIQ, Proceedings (pp. 82-92). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 4809 LNCS).