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Saturday, 3 February 2018

A Cross Layer Architecture for Multicast and Unicast Video Transmission in Mobile Broadband Networks(2011)

A Cross Layer Architecture for Multicast and Unicast Video Transmission in Mobile Broadband Networks(2011)

            This paper focuses on the transport of Unicast and Multicast traffic in the mobile broadband networks. The main objective is to allow video streaming applications to adapt its parameters according to 802.16MAC layer conditions and resource availability. For unicast traffic, we propose a cross layer optimizer, named XLO, between scalable video streaming application and IEEE 802.16 MAC layer. XLO uses the existing service flow management messages exchanged between a base station (BS) and a subscriber station (SS) and make them available to the video streaming application via a specific XLO interface. We implemented the XLO in the QualNet simulator and performed extensive simulations using a personalized scalable video traffic generator, capable of streaming video with different data rates and quality levels. We also introduce an enhanced admission control function at the BS that takes into account video adaptability property. The simulation results show the effectiveness of our XLO mechanism for delivering better quality of service. For multicast traffic, we propose a new solution based on superposition coding and make use of scalable video coding in order to optimize the network resources.
Existing System:
            Previous works on layer-encoded video multicast mainly focus on deciding the set of subscribed layers for the receivers with heterogeneous requirements and network conditions. McCanne et al. propose a protocol to deliver the required layers to each of the receivers. Vickers et al. adaptively adjust the number of layers and the bit rate of each layer according to the network condition. Kim and Ammar develop a quality adaptation scheme that maximizes the perceptual video quality through minimizing quality variation. Liu et al. find the optimal number of layers and the amount of bandwidth for each layer to maximize the total utilities of all mobile hosts. Zhao et al. determine the optimal power allocation and the transmission rate of the base station to deliver each layer of a video stream in CDMA networks. Therefore, previous works assume that the network operators have selected the set of cells to multicast a video stream. Moreover, each cell must multicast the layers of a video stream in the progressive manner. In other words, a cell cannot deliver the enhancement layers without multicasting the base layer of a video stream
Proposed System:
            In this project, different from the previous works, we focus on the selection of the cells and the wireless technologies to multicast each layer of a video stream in the heterogeneous wireless networks, where each selected cell can deliver only a subset of layers of the video stream to reduce the total bandwidth consumption. In our approach, each mobile host can select a different cell with a different wireless technology to subscribe each layer of a video stream.
Ø  Network Initialization
Ø  Video-audio splitting
Ø  Video-image splitting
Ø  Video-image merging
Ø  Video-audio merging
Processor                     :           Pentium IV
Ram                               :           512 MB
Hard disk                      :           80 GB
Front End                      :           Java
Operating System       :           Windows XP

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