상세정보
학술지
Reducing Channel Zapping Time in IPTV Based on User's Channel Selection Behaviors
- 저자
- 이채영, 홍창기, 이강용
- 발행일
- 201009
- 출처
- IEEE Transactions on Broadcasting, v.56 no.3, pp.321-330
- ISSN
- 0018-9316
- 출판사
- IEEE
- 협약과제
- 10MR4300, 차세대 IPTV인프라 기반 Social TV 서비스 인에이블러 개발, 류원
- 초록
- Channel zapping time is a crucial issue in Internet Protocol Television (IPTV) Quality of Experience (QoE) performance. One way to reduce channel zapping time is a predictive tuning method, which reduces channel zapping time by prejoining channels that are likely to be selected next, in addition to the currently watched channel. This paper presents an improved predictive tuning method that satisfies required channel zapping time with minimized bandwidth usage. Unlike existing methods, the proposed method determines the most efficient number of prejoining channels in a surfing period and in a viewing period differently by estimating expected channel zapping time and expected bandwidth usage with a Semi-Markov Process. We also propose a prejoining channel selection method according to the combined button and channel preference. Mathematical model and simulation show that the proposed method achieves the required channel zapping time with less bandwidth consumption and a more stable network than previous works. © 2006 IEEE.
- KSP 제안 키워드
- Bandwidth consumption, Channel selection method, Channel zapping, Internet Protocol Television(IPTV), Internet protocol(IP), Mathematical model, Model and Simulation, Semi-Markov Process, Tuning method, Zapping time, bandwidth usage