Bachelor Thesis Presentation: Analysis and Simulation Of Channel Switching In Mobile Live Multi-Channel TV Streaming

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This thesis discusses how to build a mobile TV service system that has the ability to do fast channel switching mechanism. The simulation is done by analyzing the system objectively and subjectively. and compared with the mechanism without fast channel switching. From the results of the analysis, it was found that fast channel switching mechanism capable of minimizing delays and improving the user experience to make the channel switch, compared with the mechanism without fast channel switching

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Bachelor Thesis Presentation: Analysis and Simulation Of Channel Switching In Mobile Live Multi-Channel TV Streaming

  1. 1. Analisis Dan Simulasi Channel Switching Pada Mobile Live Multi-Channel TV Streaming Laili L ili Aidi 113058039 Pembimbing P bi bi I Pembimbing P bi bi II Fazmah Arif Y., ST., MT. Christ Bolung Ngantung, ST.
  2. 2. problems.. problems • Multi channel access • Channel Switching delay Efisiensi, Enhancement user experience • Analisis & perancangan • Sub sistem server, client, encoder • Konfigurasi Sistem • Simulasi •Testing
  3. 3. • Distribusi media data digital real time / on demand • Real time stream simultan • Short buffer period • Data tidak disimpan / di-forward D Download V St l d Vs Streaming i • Video frame rate, Color depth, frame resolution, bit rate • Audio Frekwensi rate, sample size, channel
  4. 4. Voice & music audio codec : AMR, AMR-WB, AMR-WB+ & AAC Video d Vid codec : H263 H264 MPEG -4 SP H263, H264, 4 File format : Real Media (*.rm), 3GPP (*.3gp) Protocol : RTP - RTSP Challenges… • Mobile device • Loss rate • Bandwidth • Delay • Jitter
  5. 5. Non Fast Channel Switching Fast Channel Switching Stream ing Client Stream ing Server Client Open TCP Socket Conn DESCRIBE M essage RTSP / 1 0 200 OK + SDP Value 1.0 SETUP M essage RTSP / 1.0 200 OK + Video List available PLAY M essage + Cli t O Client Open UDP D t Datagram C Conn RTSP / 1.0 200 OK RTP socket flow (M edia Stream) for Video default OPTION (Video Req 1) M essage ( q ) g RTSP / 1.0 200 OK RTP socket flow (M edia Stream) for Video request Fast Channel Switching For switch channel OPTION (Video Req n) M essage RTSP / 1 0 200 OK 1.0 RTP socket flow (M edia Stream) for Video request TEARDOW N M essage RTSP / 1.0 200 OK
  6. 6. Encoding • Inisialisasi Initialization • Encoding video g StreamingClient • RTSP request StreamingServer • Streaming • Channel switch Streaming ChannelSwitching •Flag •Payload
  7. 7. Request Time Out Buffering.. ff
  8. 8. Encoding, Buffering, Sending data stream Buffering, decoding, playback data stream.
  9. 9. Delay channel switching ? Fast Channel Switching Tanpa Fast Channel Switching Rata – rata Testing on 4 Protocol delay pada Channel Switching y Chunk Size 1000 bytes Chunk Size 512 bytes Chunk Size 256 bytes Chunk Size 1000 bytes Chunk Size 512 bytes Chunk Size 256 bytes Chunk size (ms) variabel 892.73 877.07 959.33 1004.43 917.29 9664.21 892 73 877 07 959 33 1004 43 917 29 9664 21 means.. decreasing channel switching delay is.. • 256 bytes 90,07 % • 512 bytes 4,38 % • 1000 bytes 11,12 %
  10. 10. Non fast Channel Switching Fast Channel Switching • Capturing • Filtering • Analysing RTSP Message communications
  11. 11. Fast Channel Switching Non Fast Channel Switching • Minimal memory usage fast Channel Switching < Non Fast Channel Switching komunikasi RTSP message •Maksimal memory usage fast Channel Switching ~ Non Fast Channel Switching g Buffering, jitter, g, j , decoding playback.
  12. 12. 18 MOS 16 Fast • Fast Channel Switching 14 Channel Ch l 12 Switching 45,45% 10 Tanpa fast p • Non Fast Channel Switching 8 17 17 Channel 13 switching 33,33% 6 11 • Tidak berbeda 4 2 5 00 3 00 21,21% 0 1 2 3 4 5 Kecepatan 20 15 10 15 11 5 7 0 Kecepatan Fast Channel Tanpa Fast Tidak berbeda Switching Channel Switching
  13. 13. • Pemodelan protokol RTP/RTSP  Socket Connection ( p / (TCP  Layer) & Datagram Connection (UDP Layer) • Fast channel switching : - Delay channel switching & + user Fast channel switching :  Delay channel switching  + user  experience time access new channel • Protocol delay  (RTSP message )  Protocol delay (RTSP message ) • Transmition delay (besar & jumlah chunk data stream) • Fast channel switching : ‐ b d idth & + respon switching  bandwidth  it hi RTSP message • Memory usage  b ffbuffering, jitter, decoding & playback d d l b k
  14. 14. • Encoding Station with real time encoding • Limited bandwidth & Multi Access  simulation • Supported video codec, audio codec & pp , format type media
  15. 15. Thank You !

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