Method to Economically Introduce Dynamic Bandwidth Provisioning
Original Publication Date: 2003-Sep-25
Included in the Prior Art Database: 2003-Sep-25
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A carrier's optical network can support multiple types of service models, e.g. Permanent Provisioned Bandwidth service or Bandwidth on Demand service. The main driver for the bandwidth on demand service is the expectation of the bandwidth user, who might be an Internet Service Provider (ISP), Application Service Provider (ASP) or an enterprise, that the average cost for the service decreases. The state-of-the-art method to offer dynamic services today is based on a control plane approach where connections can be dynamically created and deleted. It is basically an approach using signaling protocols (e.g. Generalized Multi-Protocol Label Switching-GMPLS) to set-up or tear down a connection in the transport network. The disadvantage of this method are high investments needed to establish the appropriate technology whereas carriers are not sure about the success of this new transport services. Further, the control plane approach provides too much functionality for isolated applications. The present invention provides a new solution for scheduled bandwidth service and the bandwidth on demand service. A bandwidth on demand service is a service where no predictability of modification events is given. The according modifications have to be done on demand and are not known in advance. A scheduled bandwidth service is defined as a service aligned for modifications appearing in a periodic or other determined time pattern. This time pattern might cover hours, days, weeks or months. Since the occurrence of modification events for a connection can be predicted, the basic operations on the service can be planned in a time-scheduled manner.