NDLI: Distributed delivery of popular videos over Ultra-dense networks

Content Provider	IEEE Xplore Digital Library
Author	Yen, Chia-Cheng Wang, Jia-Shung
Copyright Year	2015
Description	Author affiliation: Department of Computer Science, National Tsing Hua University, Hsinchu, Taiwan (Yen, Chia-Cheng; Wang, Jia-Shung)
Abstract	The application of video streaming is expected to shift to mobile broadband as soon as the Ultra-dense Networks (UDN) and High Efficiency WLAN (HEW) become popular. The motivation of this paper is to propose a distributed delivery scheme for streaming popular videos over UDN wireless environments. The H.264 SVC scalable source coding and the LT codes of rateless channel coding are both considered and integrated to provide reliable and scalable video services wirelessly. In the allocation phase, a hot video clip is both SVC encoded and LT encoded. Then, the coded data are randomly distributed among small-cell stations (SCs) or related attached servers. In the serving phase, one nearby SC immediately decodes its own LT coded data once a request issued and broadcasts them to the requesting user and the neighboring SCs to continue the undone decoding process in parallel. Thus, the clients can receive data from multiple SCs to achieve the goal of bandwidth aggregation. Besides, once the decoding process being completed, the repairing process is ignited to recover the possible node failure if exists. Two data allocation schemes are considered to balance the storage space, transmission bandwidth and fault tolerance requirements. In the ultra-dense scenarios, our simulations show that each request can be served with at least acceptable quality and with one more enhancement layer in average under communication loss rate less than 10% and possible node failures.
Starting Page	116
Ending Page	121
File Size	755261
Page Count	6
File Format	PDF
e-ISBN	9781467371940
DOI	10.1109/ISCC.2015.7405503
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-06
Publisher Place	Cyprus
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Videos Decoding Resource management Static VAr compensators Distributed databases Mobile communication Encoding Bandwidth aggregation Distributed decoding H.264 SVC LT codes Ultra-dense networks (UDNs)
Content Type	Text
Resource Type	Article

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