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2009 Summer Start-up PLAN

[startup seminar ]. 2009 Summer Start-up PLAN. Jungsik Yoon jsyoon@nm.gist.ac.kr Networked Media Lab Department of Information and Communication Gwangju Institute of Science and Technology (GIST) 2009. 6. 29. Status Review. MS. 3 rd semester Research area

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2009 Summer Start-up PLAN

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  1. [startup seminar] 2009 Summer Start-up PLAN Jungsik Yoon jsyoon@nm.gist.ac.kr Networked Media LabDepartment of Information and CommunicationGwangju Institute of Science and Technology (GIST) 2009. 6. 29

  2. Status Review • MS. 3rd semester • Research area • Segment Scheduling for P2P-based wireless VoD service • Project • MOVi-TV (Sep./2008~Jun./2010) • Segment scheduling • Openmoko (porting on handheld device) • Publications • 1 domestic paper A priority-based segment scheduling in peer-to-peer-based wireless VoD, KSPC 2008 • Graduation • 2010. 2 / 2010.8 (if postponed) • Adaptation of FEC to MOVi and Enhance Segment Scheduler

  3. Research Overview • Segment scheduling for MOVi • GoalProvide more many users with good playback quality • Scheduling • Sender/receiver • Segment • Time • Frequency 802.11 DS Downlink 802.11 Mobile Networks P2P link

  4. Work to do • Adaptation of FEC (Forward Error Correction) • Transmit unit is a block, a fragmentation of segment(does not use encoding/decoding) • In wireless network, packet loss rate is quiet high • In order to transmit reliably, adapt FEC algorithm for MOVi • Two candidates • Network Coding • Digital Fountain Approach • Select one idea from survey and simple simulation • Result should be implementation in Testbed • Group-based segment scheduling • When P2P-connection > Downlink, average performance and scalability of MOVi is increased • To increase P2P-connection, make a group of nodes then one node can transmit using localized broadcast • This idea also need packet encoding/decoding

  5. Schedule • Expected Output • FEC adapted MOVi system (Implementation) • Group-based segment scheduler(Simulation  Implementation) • Paper work (if possible) • Plan

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