Patent ID: 7551629
Filing Date: 2009-06-23
Classification: H04L,Y10S

Abstract:
1. A method for propagating filters in a publish-subscribe network, comprising: receiving, at a router, a plurality of filters from one or more nodes relating to subscriptions to content in the network, wherein a filter of the plurality of filters describes a set of events that a subscriber is interested in receiving; the router reducing a number of the filters based upon particular criteria; and the router propagating in the network the reduced number of filters for use in satisfying the subscriptions to content; wherein the propagating step includes propagating the filters using one or more of a plurality of particular procedures chosen from a list consisting of: an eager propagation scheme; lazy propagation scheme; response to broadcast advertisement scheme; after network topology computation scheme; periodic propagation scheme; filter re-propagation during fault repair scheme; and, filter re-propagation during network re-configuration scheme.