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Streaming the Media Files on Heterogeneous Wireless Networks (HWN’s)

S. Sakthivel, Dr.E. Kannan

Abstract


Heterogeneous wireless network with multi-home clients combine various wireless technologies and provide universal access. Nowadays these wireless networks which is accessed by portable devices with multiple interfaces to access Internet. Recently previous work has mainly focused on reducing access delay and power consumption for data broadcast in wireless network. In this paper, we propose a new data broadcast mechanism with network coding in heterogeneous wireless networks [6]. Our mechanism adaptively clusters the mobile hosts in fewer cells to minimize the bandwidth consumption. In addition, we adaptively code the data according to the data temporarily stored in each mobile host with a distributed manner. Our mechanism allows each delivered message to be coded from only a subset of data to further reduce the number of required messages. We formulate the cell selection and broadcast coding problem with integer programming and prove that the problem is NP-hard. We design a distributed algorithm based on LaGrange and relaxation. Our algorithm needs no server to record the location, queried, and stored information of receivers. Moreover, our algorithm is adaptive to the dynamic group membership, mobility, queried, and stored data of receivers.

Keywords


Cell Selection Problem (Cop), Broadcast Coding Problem (Bop), Data Broadcast Mechanism, Bandwidth Consumption And Streaming.

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References


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