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Network Coding as a WiMAX Link Reliability Mechanism

  • Surat Teerapittayanon
  • Kerim Fouli
  • Muriel Médard
  • Marie-José Montpetit
  • Xiaomeng Shi
  • Ivan Seskar
  • Abhimanyu Gosain
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7642)

Abstract

We design and implement a network-coding-enabled reliability architecture for next generation wireless networks. Our network coding (NC) architecture uses a flexible thread-based design, with each encoder-decoder instance applying systematic intra-session random linear network coding as a packet erasure code at the IP layer. Using GENI WiMAX platforms, a series of point-to-point transmission experiments were conducted to compare the performance of the NC architecture to that of the Automatic Repeated reQuest (ARQ) and Hybrid ARQ (HARQ) mechanisms. In our scenarios, the proposed architecture is able to decrease packet loss from around 11-32% to nearly 0%; compared to HARQ and joint HARQ/ARQ mechanisms, the NC architecture offers up to 5.9 times gain in throughput and 5.5 times reduction in end-to-end file transfer delay. By establishing NC as a potential substitute for HARQ/ARQ, our experiments offer important insights into cross-layer designs of next generation wireless networks.

Keywords

ARQ GENI HARQ Network Coding WiMAX 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Surat Teerapittayanon
    • 1
  • Kerim Fouli
    • 1
  • Muriel Médard
    • 1
  • Marie-José Montpetit
    • 1
  • Xiaomeng Shi
    • 1
  • Ivan Seskar
    • 2
  • Abhimanyu Gosain
    • 3
  1. 1.Research Laboratory of Electronics (RLE)Massachusetts Institute of Technology (MIT)CambridgeUSA
  2. 2.WINLABRutgers UniversityPiscatawayUSA
  3. 3.Raytheon BBN TechnologiesCambridgeUSA

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