NDLI: CAAHR: Content aware adaptive HARQ retransmission scheme for 4G/LTE network

Content Provider	IEEE Xplore Digital Library
Author	Tirouvengadam, B. Radhakrishnan, R. Nayak, A.
Copyright Year	2012
Description	Author affiliation: School of Electrical Engineering and Computer Science, University of Ottawa, 800 King Edward Ave, Canada K1N 6N5 (Tirouvengadam, B.; Radhakrishnan, R.; Nayak, A.)
Abstract	A drastic increase in traffic of mobile broadband is seen in the past few years, which is further accelerated by the increased usage of smart phones and its applications. The availability of good smart phones and better data connectivity are encouraging mobile users to use video services. This huge increase in usage will pose a lot of challenges to the wireless networks. The existing wireless networks lack content awareness within an application. In this paper, we present an approach to content awareness at the Hybrid Automatic Repeat reQuest (HARQ) level of Long Term Evolution (LTE) system by changing the retransmission count based on the importance of packet being scheduled. This scheme improves the received video quality by up to 8% for users under poor channel conditions with negligible increase in packet delay and Physical Downlink Shared Channel (PDSCH) utilization factor. The main benefits of this scheme are its simplicity and ease of implementation without compromising on performance of the network elements.
Starting Page	456
Ending Page	461
File Size	542190
Page Count	6
File Format	PDF
ISBN	9781467313773
ISSN	21658528
e-ISBN	9781467313780
e-ISBN	9781467313766
DOI	10.1109/ICUFN.2012.6261749
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-04
Publisher Place	Thailand
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Adaptation models Protocols H.264 Video Streaming media Downlink HARQ 4G/LTE networks IP networks Servers Delay Content Aware
Content Type	Text
Resource Type	Article

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