NDLI: Encoded packet-assisted reliable transmission for unicast sessions in wireless networks

Content Provider	IEEE Xplore Digital Library
Author	Zhiheng Zhou Liang Zhou
Copyright Year	2012
Description	Author affiliation: National Key Laboratory of Communication, University of Electronic Science and Technology of China, Chengdu, China (Zhiheng Zhou; Liang Zhou)
Abstract	In this paper, we propose an encoded packet-assisted retransmission, namely EAR, approach that use opportunistic network coding (ONC) to improve the bandwidth efficiency for unicast sections in wireless networks. In existing ONC schemes, network coding opportunity are not always fully exploited due to the lack of understanding of the use of the encoded packets receivers cannot decode. To overcome this limitation, EAR develops an improved opportunistic listening mechanism that allows receivers to store all heard undecodable ONC packets and to periodically report the reception status to the sender. The sender then can directly XOR these encoded packets with other packets to exploit the potential coding opportunities of them. To further maximize the utilization of coding opportunity in the network, EAR introduces a greedy coding algorithm that constructs a simple scheduler. The scheduler prioritizes packets according to their contribution to the overall transmission performance. Simulation results show that, EAR can significantly reduce the total number of retransmissions and provide more efficient bandwidth utilization, compared with existing schemes.
Starting Page	2490
Ending Page	2495
File Size	544073
Page Count	6
File Format	PDF
ISBN	9781457720529
ISSN	15503607
e-ISBN	9781457720536
e-ISBN	9781457720512
DOI	10.1109/ICC.2012.6364210
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-10
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Encoding Ear Wireless networks Network coding Unicast Bandwidth retransmission opportunistic network coding reception status packet loss pattern
Content Type	Text

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