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[startup seminar ]. 2009 Summer Start-up PLAN. Jungsik Yoon [email protected] 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 - PowerPoint PPT Presentation
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2009 Summer Start-up PLANJungsik Yoon
Networked Media LabDepartment of Information and Communication
Gwangju Institute of Science and Technology (GIST)2009. 6. 29
[startup seminar]
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
Status Review
Segment scheduling for MOVi
Research Overview
802.11 DS
802.11Mobile Networks
Downlink
P2P link
GoalProvide more many users with good playback quality
Scheduling Sender/receiver Segment Time Frequency
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 scalabil-
ity 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
Work to do
Expected Output◦ FEC adapted MOVi system (Implementation)◦ Group-based segment scheduler
(Simulation Implementation)◦ Paper work (if possible)
Plan
Schedule