Patent ID: 8050560
Filing Date: 2011-11-01
Classification: H04J

Abstract:
1. A distributed resources sharing method using weighting factors of a plurality of sub-domains in an optical network, which includes a plurality of nodes and a plurality of links, comprising: connecting a working path from a source node to a destination node according to a request from a subscriber; calculating weighting factors of the sub-domains for measurement of concentration of the sub-domains including the working path by using information on the connected working path; setting up a backup path from the source node to the destination node by using the weighting factors; and allocating resources in response to a connection request at the time of setting up the backup path, and sharing the allocated resources, wherein the calculating the weighting factors for measurement of concentration of the sub-domains including the working paths comprises: setting up shared risk link groups for the links in the optical network, and then setting the number of the plurality of sub-domains in the optical network as a maximum number of sub-domains; receiving by each node, information on shared risk link groups corresponding to the sub-domains as a predetermined pattern; calculating the number of working paths that use resources of the shared risk link groups corresponding to each sub-domain; calculating the number of user connections occupied by each sub-domain in a total number of user connections in the optical network; and storing the calculated number of user connections as the weighting factor of each sub-domain.