Index coding at the WiFi edge: an implementation study for video delivery

Lalhruaizela Chhangte, Emanuele Viterbo, D. Manjunath, Nikhil Karamchandani

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Abstract

HTTP based video streaming has become the de facto standard for video content delivery across different video streaming services. However, video content delivery continues to be challenged at the wireless edge by inadequate and highly variable bandwidth. In this paper, we describe WiCode, a platform that improves HTTP based video content delivery at the WiFi edge. WiCode uses coded delivery at the WiFi AP to reduce data transmissions in order to improve the perceived performance of video streaming at the users. WiCode performs index coding on video segments to reduce the number of bits transmitted. Further, it also performs index coding on UDP packets that are retransmitted to reduce the number of bits transmitted. This paper describes the design and implementation of WiCode, and the practical gains achievable due to employing coded delivery in a real system taking into account the overheads introduced by WiCode. The WiCode module at the client side is a browser plugin that does not require any client side device configuration changes. We also show the effect of variable and fixed length segment size on the perceived performance of WiCode.

Original languageEnglish
Title of host publication2020 International Conference on Signal Processing and Communications (SPCOM)
EditorsPrasanta Kumar Ghosh, Krishna Jagannathan, Nikhil Karamchandani
Place of PublicationPiscataway NJ USA
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages1-5
Number of pages5
ISBN (Electronic)9781728188959
DOIs
Publication statusPublished - Jul 2020
EventInternational Conference on Signal Processing and Communications 2020 - Bangalore, India
Duration: 19 Jul 202024 Jul 2020
Conference number: 13th
https://ieeexplore.ieee.org/xpl/conhome/9176988/proceeding?rowsPerPage=100&pageNumber=1

Publication series

NameSPCOM 2020 - International Conference on Signal Processing and Communications
PublisherIEEE, Institute of Electrical and Electronics Engineers
ISSN (Electronic)2474-915X

Conference

ConferenceInternational Conference on Signal Processing and Communications 2020
Abbreviated titleSPCOM 2020
CountryIndia
CityBangalore
Period19/07/2024/07/20
Internet address

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