A Hybrid Collision Avoidance Scheme for Ad Hoc Networks

Abstract

A novel hybrid collision avoidance scheme that combines both sender-initiated and receiver-initiated collision-avoidance handshakes is proposed for multi-hop ad hoc networks. The new scheme is compatible with the popular IEEE 802.11 MAC protocol and involves only some additional queue management and book-keeping work. Simulations of both UDP- and TCP-based applications are conducted with the IEEE 802.11 MAC protocol, a measurement-based fair scheme and the new scheme. It is shown that the new scheme can alleviate the fairness problem with almost no degradation in throughput. More importantly, it is shown that without explicit information exchange among nodes, the fairness problem cannot be solved conclusively if reasonable throughput is to be maintained.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2006
Accession Number
ADA457363

Entities

People

  • J.J. Garcia-Luna-Aceves
  • Yu Wang

Organizations

  • University of California, Santa Cruz

Tags

Communities of Interest

  • Counter WMD

DTIC Thesaurus Topics

  • Ad Hoc Networks
  • California
  • Collision Avoidance
  • Collisions
  • Computer Communications
  • Electrical Engineering
  • Engineering
  • Information Exchange
  • Mesh Networks
  • Multiple Access
  • Networks
  • Simulations
  • Standards
  • Throughput
  • Transport Protocols
  • Wireless Networks

Fields of Study

  • Computer science

Readers

  • Computer Networking