OARE: Overhearing-Aided Redundancy Elimination in Multirate WLANs

Gwangwoo Park, Youngjun Shim, Insun Jang, Sangheon Pack, Xuemin Shen

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


In general, an access point (AP) in wireless local area networks (WLANs) can be easily congested since all related data traffic goes through it. To satisfy the quality-of-service (QoS) requirement for its customers, a protocol-independent redundancy elimination (RE) technique can effectively mitigate the congestion at the AP by reducing redundant data traffic. In this paper, we propose an overhearing-aided RE (OARE) scheme for multirate WLANs by leveraging the broadcast nature of a wireless medium. In OARE, the AP estimates overhearing probabilities of partially sliced chunks from an incoming packet for a destination mobile terminal by considering an adaptive modulation and coding technique. Then, the original packet is encoded by means of RE to minimize its transfer time to the destination, depending on the estimated overhearing probabilities. Extensive simulation results demonstrate that OARE can reduce the packet transfer time by 7.8%-23.2%, compared with non-RE (or nonencoded) transmissions.

Original languageEnglish
Article number7115174
Pages (from-to)3547-3558
Number of pages12
JournalIEEE Transactions on Vehicular Technology
Issue number5
Publication statusPublished - 2016 May

Bibliographical note

Funding Information:
This work was supported in part by the National Research Foundation of Korea, funded by the Korean Government under Grant NRF-2014R1A2A1A12066986; and in part by the Ministry of Science, ICT and Future Planning/Institute for Information and Communications Technology Promotion, through the ICT R&D program under Grant 2014-044-006-004 (Next Generation WLAN System with High Efficient Performance). The review of this paper was coordinated by Prof. Y. Qian.

Publisher Copyright:
© 2015 IEEE.


  • Broadcast
  • multirate
  • overhearing
  • redundancy elimination (RE)
  • transfer time

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics


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