TY - GEN
T1 - Multicast pre-distribution in VoD services
AU - Kamiyama, Noriaki
AU - Kawahara, Ryoichi
AU - Mori, Tatsuya
AU - Hasegawa, Haruhisa
PY - 2011
Y1 - 2011
N2 - The number of users of VoD services in which users can request content delivery on demand has increased dramatically. In VoD services, the demand for content changes greatly daily. Because service providers are required to maintain a stable service during peak hours, they need to design the system resources based on the demand at the peak time, so reducing the server load at the peak time is an important issue. Although multicast delivery in which multiple users requesting the same content are supported by one delivery session is effective for suppressing the server load during peak hours, the response time of users seriously increases. A P2P-assisted delivery system in which users download content from other users watching the same content is also effective for reducing the server load. However, the system performance depends on selfish user behavior, and optimizing the usage of system resources is difficult. Moreover, complex operation, i.e., switching the delivery multicast tree or source peers, is necessary to support VCR operation. In this paper, we propose to reduce the server load without increasing user response time by multicasting popular content to all users independently of actual requests as well as providing on-demand unicast delivery. Through numerical evaluation using actual VoD access log data, we clarify the effectiveness of the proposed method.
AB - The number of users of VoD services in which users can request content delivery on demand has increased dramatically. In VoD services, the demand for content changes greatly daily. Because service providers are required to maintain a stable service during peak hours, they need to design the system resources based on the demand at the peak time, so reducing the server load at the peak time is an important issue. Although multicast delivery in which multiple users requesting the same content are supported by one delivery session is effective for suppressing the server load during peak hours, the response time of users seriously increases. A P2P-assisted delivery system in which users download content from other users watching the same content is also effective for reducing the server load. However, the system performance depends on selfish user behavior, and optimizing the usage of system resources is difficult. Moreover, complex operation, i.e., switching the delivery multicast tree or source peers, is necessary to support VCR operation. In this paper, we propose to reduce the server load without increasing user response time by multicasting popular content to all users independently of actual requests as well as providing on-demand unicast delivery. Through numerical evaluation using actual VoD access log data, we clarify the effectiveness of the proposed method.
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U2 - 10.1109/CQR.2011.5996079
DO - 10.1109/CQR.2011.5996079
M3 - Conference contribution
AN - SCOPUS:80052782450
SN - 9781457712975
T3 - 2011 IEEE International Workshop Technical Committee on Communications Quality and Reliability, CQR 2011
BT - 2011 IEEE International Workshop Technical Committee on Communications Quality and Reliability, CQR 2011
T2 - 2011 IEEE International Workshop Technical Committee on Communications Quality and Reliability, CQR 2011
Y2 - 10 May 2011 through 12 May 2011
ER -