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Revenue Focused Protection for VOD in DWDM Rings

New protection schemes for video on demand (VOD) in a DWDM ring network are proposed that employ information per customer. Unlike prior schemes that rely on fixed priorities, the proposed scheme varies the priority to ensure the system best meets customer expected downtime, thereby ensuring revenues are maximized. The information used to determine current priorities includes failure and revenue statistics. Failure statistics is the number of VOD service interruptions a customer experiences, and revenue statistics is the rate that revenues are generated by a customer. To evaluate the schemes a simple model of traffic and customer behavior is used. They are evaluated over two network resource provisioning scenarios. There are cases when the lost revenue can be reduced from about 20% to zero by using failure and revenue statistics.