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Bandwidth Borrowing Schemes for Instantaneous Video-on-Demand Systems
A controlled multicast scheme provides instantaneous service, but limited server bandwidth causes some user requests to be either delayed or rejected when insufficient free bandwidth is available. Two borrowing schemes are proposed for instantaneous video-on-demand (VOD) that reduce the user request blocking rate by borrowing bandwidth from ongoing video streams when there is insufficient free bandwidth for the server to deliver a new video stream. Both these new schemes have proved to be successful in reducing blocking rate and increasing bandwidth utilization at the expense of temporarily degrading the video quality
An adaptive quasi harmonic broadcasting scheme with optimal bandwidth requirement
The aim of Harmonic Broadcasting protocol is to reduce the bandwidth usage in
video-on-demand service where a video is divided into some equal sized segments
and every segment is repeatedly transmitted over a number of channels that
follows harmonic series for channel bandwidth assignment. As the bandwidth of
channels differs from each other and users can join at any time to these
multicast channels, they may experience a synchronization problem between
download and playback. To deal with this issue, some schemes have been
proposed, however, at the cost of additional or wastage of bandwidth or sudden
extreme bandwidth requirement. In this paper we present an adaptive quasi
harmonic broadcasting scheme (AQHB) which delivers all data segment on time
that is the download and playback synchronization problem is eliminated while
keeping the bandwidth consumption as same as traditional harmonic broadcasting
scheme without cost of any additional or wastage of bandwidth. It also ensures
the video server not to increase the channel bandwidth suddenly that is, also
eliminates the sudden buffer requirement at the client side. We present several
analytical results to exhibit the efficiency of our proposed broadcasting
scheme over the existing ones.Comment: IEEE International Conference on Informatics, Electronics & Vision
(ICIEV), 2013, 6pages, 8 figure
Random Linear Network Coding for 5G Mobile Video Delivery
An exponential increase in mobile video delivery will continue with the
demand for higher resolution, multi-view and large-scale multicast video
services. Novel fifth generation (5G) 3GPP New Radio (NR) standard will bring a
number of new opportunities for optimizing video delivery across both 5G core
and radio access networks. One of the promising approaches for video quality
adaptation, throughput enhancement and erasure protection is the use of
packet-level random linear network coding (RLNC). In this review paper, we
discuss the integration of RLNC into the 5G NR standard, building upon the
ideas and opportunities identified in 4G LTE. We explicitly identify and
discuss in detail novel 5G NR features that provide support for RLNC-based
video delivery in 5G, thus pointing out to the promising avenues for future
research.Comment: Invited paper for Special Issue "Network and Rateless Coding for
Video Streaming" - MDPI Informatio
Quality of service assurance for the next generation Internet
The provisioning for multimedia applications has been of increasing interest among researchers and Internet Service Providers. Through the migration from resource-based to service-driven networks, it has become evident that the Internet model should be enhanced to provide support for a variety of differentiated services that match applications and customer requirements, and not stay limited under the flat best-effort service that is currently provided.
In this paper, we describe and critically appraise the major achievements of the efforts to introduce Quality of Service (QoS) assurance and provisioning within the Internet model. We then propose a research path for the creation of a network services management architecture,
through which we can move towards a QoS-enabled network environment, offering support for a variety of different services, based on traffic characteristics and user expectations
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