Congestion-aware network-coding-based opportunistic routing in wireless ad hoc networks

Kun Cheng Chung, Hsin Chun Chen, Wanjiun Liao

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

5 Scopus citations

Abstract

In this paper, we propose a congestion-aware network-coding-based opportunistic routing mechanism called CONCOR for wireless ad hoc networks. An existing mechanism called MORE shows good throughput in the single flow case; however, it suffers significant performance degradation in scenarios with multiple traffic flows due to the redundant transmission problem and the unbalanced load problem. To tackle these two problems, our proposed CONCOR contains two key components, namely, null space feedback and rank differential, which allows feedback of the received random network coding information with minimal overhead among neighboring nodes and enables a backpressure policy to balance the load along the path. The simulation results show that CONCOR outperforms MORE in all cases, even in the single flow scenario. Specifically, compared with MORE, CONCOR has better throughput due to fewer redundant transmissions and more equitable treatment of multiple competing flows.

Original languageEnglish (US)
Title of host publication2011 IEEE Global Telecommunications Conference, GLOBECOM 2011
DOIs
StatePublished - Dec 1 2011
Externally publishedYes
Event54th Annual IEEE Global Telecommunications Conference: "Energizing Global Communications", GLOBECOM 2011 - Houston, TX, United States
Duration: Dec 5 2011Dec 9 2011

Publication series

NameGLOBECOM - IEEE Global Telecommunications Conference

Other

Other54th Annual IEEE Global Telecommunications Conference: "Energizing Global Communications", GLOBECOM 2011
CountryUnited States
CityHouston, TX
Period12/5/1112/9/11

Keywords

  • congestion-aware, wireless ad hoc netowkrs
  • network coding
  • opportunistic routing

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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