NDLI: Deterministic structured network coding for WWAN video broadcast with cooperative peer-to-peer repair

Content Provider	IEEE Xplore Digital Library
Author	Xin Liu Cheung, G. Chen-Nee Chuah
Copyright Year	2010
Description	Author affiliation: National Institute of Informatics, Japan (Cheung, G.) \|\| University of California, Davis, USA (Xin Liu; Chen-Nee Chuah)
Abstract	Recent research has exploited the multi-homing property (one terminal with multiple network interfaces) of modern devices to improve communication performance in wireless networks. Cooperative Peer-to-peer Repair (CPR) is one example where given simultaneous connections to both a Wireless Wide Area Network (WWAN) and an ad-hoc Wireless Local Area Network (WLAN), peers receiving different subsets of WWAN broadcast packets can exchange received WWAN packets with their ad-hoc WLAN peers for local recovery. In our previous work, we have shown that by using Network Coding (NC) to linearly combine received packets into new CPR packets for local exchanges, packet recovery can be improved. Moreover, by imposing Structure on Network Coding (SNC) when encoding a CPR packet, decoding of at least the important packets becomes possible in the event when insufficient number of CPR packets were received for full recovery. Given SNC is used during CPR, the key decision for each peer is to determine which SNC type to encode a repair packet at each WLAN transmission opportunity. The decision is further complicated by the observation that peers in general receive different numbers of CPR packets from neighbors due to varying amount of WLAN link contentions and interference experienced. In this paper, we propose a novel counter-based deterministic SNC type selection scheme. Using this approach, we show that a simple local optimization procedure, taking advantage of available neighbors' state information, can be easily implemented to further improved CPR performance. Simulation results show that our proposed scheme outperformed our previous randomized SNC type selection scheme by up to 1.87dB.
Starting Page	4473
Ending Page	4476
File Size	275855
Page Count	4
File Format	PDF
ISBN	9781424479924
ISSN	15224880
e-ISBN	9781424479948
e-ISBN	9781424479931
DOI	10.1109/ICIP.2010.5651688
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-26
Publisher Place	Hong Kong
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optimization Wireless LAN Ad hoc networks Maintenance engineering Network coding Peer to peer computing Streaming media structured network coding WWAN video broadcast cooperative peer-to-peer repair
Content Type	Text
Resource Type	Article

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