Aggregated resource reservation for data flows

摘要

A network node for reserving resources for data flows in a communication network. The node detects a request for resource reservation for a new data flow and computes an admission test count based on descriptors of the new data flow and reservation counts, which represent reservation functions of descriptors of previously admitted data flows and which specify resources of the admitted data flows. The new data flow is admitted if the admission test count is smaller than a maximum allowable count. The reservation counts are then updated based on the descriptors of the new data flow. A plurality of admission formulas may thus be used to maintain aggregated reservation counts for data flows, the number of counts being independent from the number of flows.

主权项

1. A method of reserving resources for data flows in a communication network, said method comprising the steps of:
detecting a request for resource reservation for a new data flow including a plurality of descriptors specifying requested resources; computing an admission test count representing overall required resources when the new data flow is admitted, wherein the admission test count is computed based upon the plurality of descriptors of the new data flow and upon reservation counts, wherein each reservation count represents a collection of at least one sum function and at least one product function having as variables the plurality of descriptors of the admitted data flows; admitting the new data flow, when the admission test count is smaller than a maximum admission count representing a maximum bandwidth capability of the network; and updating the reservation counts to include the descriptors of the new data flow, when the new data flow is admitted.