Title :
Video on demand over WDM networks
Author :
Huang, Nen-Fu ; Liu, Huey-lng ; Hsu, Cling-Fung
Author_Institution :
Dept. of Comput. Sci., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
Owing to the traffic characteristics of a video-on-demand (VOD) system, it is very attractive to use the isochronous service for VOD traffic transmission. This paper proposes a mechanism which uses an isochronous service to support a video-on-demand service over WDM networks. Based on the proposed mechanism, the problem of scheduling isochronous and asynchronous traffic with a variable number of receivers and transmitters for single-star WDM networks is investigated. For only asynchronous traffic, an optimal scheduling algorithm is presented; for both isochronous and asynchronous traffic, a heuristic algorithm is proposed for the single-star WDM networks with multiple receivers and transmitters. Simulation results show that the average switching duration and the average number of switching modes obtained by the proposed algorithm are efficient
Keywords :
interactive video; multimedia communication; network topology; optical fibre networks; scheduling; telecommunication traffic; wavelength division multiplexing; VOD system; VOD traffic transmission; asynchronous traffic scheduling; average switching duration; heuristic algorithm; isochronous service; isochronous traffic scheduling; multimedia service; optimal scheduling algorithm; performance evaluation; receivers; simulation results; single-star WDM networks; switching modes; traffic characteristics; transmitters; video on demand; Asynchronous transfer mode; Network servers; Optical transmitters; Optimal scheduling; Scheduling algorithm; Telecommunication traffic; Traffic control; Video on demand; WDM networks; Wavelength division multiplexing;
Conference_Titel :
Global Telecommunications Conference, 1996. GLOBECOM '96. 'Communications: The Key to Global Prosperity
Conference_Location :
London
Print_ISBN :
0-7803-3336-5
DOI :
10.1109/GLOCOM.1996.594374
