TY - GEN
T1 - Dynamic segment based proxy caching for Video on Demand
AU - Li, Xiaoling
AU - Tu, Wei
AU - Steinbach, Eckehard
PY - 2008
Y1 - 2008
N2 - In this paper, we propose a novel proxy caching scheme for Video on Demand (VoD) services. Our approach is based on an observation we have made during subjective VoD performance evaluation tests. We have found that when users are seeking for some specific content, they pay most attention to the initial delay, while a small shift of the starting point is acceptable. Meanwhile, the random access using the slide bar sometimes even makes this small shift unnoticeable. Based on this fact as well as the popularity of video segments, we propose a dynamic segment based caching algorithm. It adjusts the segment size according to its hitting rate and maximizes the user satisfaction by optimally trading off between the initial delay and the deviation of the starting point. Our experimental results show a significantly improved user satisfaction compared to previous caching approaches.
AB - In this paper, we propose a novel proxy caching scheme for Video on Demand (VoD) services. Our approach is based on an observation we have made during subjective VoD performance evaluation tests. We have found that when users are seeking for some specific content, they pay most attention to the initial delay, while a small shift of the starting point is acceptable. Meanwhile, the random access using the slide bar sometimes even makes this small shift unnoticeable. Based on this fact as well as the popularity of video segments, we propose a dynamic segment based caching algorithm. It adjusts the segment size according to its hitting rate and maximizes the user satisfaction by optimally trading off between the initial delay and the deviation of the starting point. Our experimental results show a significantly improved user satisfaction compared to previous caching approaches.
UR - http://www.scopus.com/inward/record.url?scp=54049085470&partnerID=8YFLogxK
U2 - 10.1109/ICME.2008.4607651
DO - 10.1109/ICME.2008.4607651
M3 - Conference contribution
AN - SCOPUS:54049085470
SN - 9781424425716
T3 - 2008 IEEE International Conference on Multimedia and Expo, ICME 2008 - Proceedings
SP - 1181
EP - 1184
BT - 2008 IEEE International Conference on Multimedia and Expo, ICME 2008 - Proceedings
T2 - 2008 IEEE International Conference on Multimedia and Expo, ICME 2008
Y2 - 23 June 2008 through 26 June 2008
ER -