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Method and apparatus for propagating content filters for a publish-subscribe network

  • US 7,551,629 B2
  • Filed: 03/28/2003
  • Issued: 06/23/2009
  • Est. Priority Date: 03/28/2002
  • Status: Expired due to Fees
First Claim
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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.

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