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Performance analysis of network coding-based content distribution in vehicular ad-hoc networks

Amerimehr, M. H ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1049/iet-com.2013.0611
  3. Abstract:
  4. The authors investigate the content distribution among the vehicles of a cluster in a vehicular ad-hoc network, exploiting network coding. The vehicles collaborate to disseminate the coded data packets, received from a roadside info-station based on IEEE 802.11 medium access control (MAC) protocol. Two types of network coding are considered: random linear network coding (RLNC) over a large finite field and random XORed network coding (RXNC). An analytical model is proposed to address the effect of random access MAC as well as the correlation among received coded packets on the performance of content distribution. First, a p-persistent carrier sense multiple access approximation for IEEE 802.11 MAC is adopted, to derive the expected amount of time necessary to deliver the whole information (a data file) to the vehicles, that is, content distribution delay, based on RLNC. Second, the content distribution delay for RXNC is investigated. In this respect, the authors determine the probability of a newly received packet to be innovative for RXNC and characterise the probability that all nodes succeed to retrieve the data file, that is, content delivery ratio. Finally, the success of content distribution process for erasure channels is assessed
  5. Keywords:
  6. Access control ; Ad hoc networks ; Carrier communication ; Carrier sense multiple access ; Codes (symbols) ; Medium access control ; Standards ; Telecommunication networks ; Vehicles ; Vehicular ad hoc networks ; Content delivery ; Content distribution ; Erasure channels ; Finite fields ; IEEE 802.11 MAC ; Medium access control protocols ; Performance analysis ; Random Linear Network Coding ; Network coding
  7. Source: IET Communications ; Vol. 8, issue. 9 , 2014 , p. 1447-1458
  8. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6830043