On Synchronization Frames for Channel Switching in a GOP-Based IPTV Environment

Author

Jennehag, U. ; Pettersson, S.

Author_Institution

Mid Sweden Univ. Sundsvall, Sundsvall

fYear

2008

fDate

10-12 Jan. 2008

Firstpage

638

Lastpage

642

Abstract

Traditionally, group of pictures (GOP) is used to solve IPTV channel tune-in issues. However, channel changes issued by a TV viewer are quite rare which indicates it is redundant to solve channel tune-in with GOP. In this paper we extend our earlier work on synchronization frames for channel switching (SFCS) for reducing bandwidth utilization in IPTV networks to include encoding/decoding standards not supporting Sl/SP-frames. We propose modifications to SFCS to work with MPEG-2. Channel tune-in quality and synchronization stream generation is also addressed. We provide bandwidth estimation expressions which are verified with an experimental simulation. Results show that SFCS adapted to MPEG-2 can reduce the bandwidth utilization with 9% compared to a traditional GOP system with equal steady state quality.

Keywords

IP networks; bandwidth allocation; digital television; telecommunication channels; video coding; GOP-based IPTV environment; IPTV network; MPEG-2; bandwidth estimation; bandwidth utilization; channel tune-in quality; encoding/decoding standard; group of pictures; synchronization frames for channel switching; synchronization stream generation; Bandwidth; Decoding; Frequency synchronization; IPTV; Information technology; Steady-state; Streaming media; Switches; TV; Video on demand;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Communications and Networking Conference, 2008. CCNC 2008. 5th IEEE

Conference_Location

Las Vegas, NV

Print_ISBN

978-1-4244-1456-7

Electronic_ISBN

978-1-4244-1457-4

Type

conf

DOI

10.1109/ccnc08.2007.147

Filename

4446445