Smart retransmission and rate adaptation in wifi

Muhammad O. Khan, Lili Qiu, Apurv Bhartia, Ching-Ju Lin

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

4 Scopus citations

Abstract

Transmission failures are common in wireless networksdue to dynamic channel conditions and unpredictableinterference. To efficiently recover from failures, we proposea smart retransmission scheme where the receiver combinesinformation received from multiple failed transmissions associatedwith the same frame. The smart retransmission hastwo distinguishing features: (i) it can simultaneously supportpartial retransmission and combines bits with low confidence, and (ii) it has the first combining-aware rate adaptation scheme, which selects the data rates for all transmissions associated withthe same frame to maximize overall throughput. We find thatcombining-aware rate adaptation is essential to harnessing thecombining gain. Using trace-driven simulation and USRP testbedexperiments, we demonstrate the feasibility and effectiveness ofour approach, and show it significantly out-performs the existingschemes, such as WiFi, partial packet recovery (PPR), andSOFT in terms of both throughput and energy.

Original languageEnglish
Title of host publicationProceedings - 2015 IEEE 23rd International Conference on Network Protocols, ICNP 2015
PublisherIEEE Computer Society
Pages54-65
Number of pages12
ISBN (Electronic)9781467382953
DOIs
StatePublished - 18 Mar 2016
Event23rd IEEE International Conference on Network Protocols, ICNP 2015 - San Francisco, United States
Duration: 10 Nov 201513 Nov 2015

Publication series

NameProceedings - International Conference on Network Protocols, ICNP
Volume2016-March
ISSN (Print)1092-1648

Conference

Conference23rd IEEE International Conference on Network Protocols, ICNP 2015
CountryUnited States
CitySan Francisco
Period10/11/1513/11/15

Keywords

  • Partial recovery
  • Rate adaptation
  • WiFi

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  • Cite this

    Khan, M. O., Qiu, L., Bhartia, A., & Lin, C-J. (2016). Smart retransmission and rate adaptation in wifi. In Proceedings - 2015 IEEE 23rd International Conference on Network Protocols, ICNP 2015 (pp. 54-65). [7437116] (Proceedings - International Conference on Network Protocols, ICNP; Vol. 2016-March). IEEE Computer Society. https://doi.org/10.1109/ICNP.2015.48