The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 15, 2013
Filed:
Nov. 11, 2009
Venkatesan Pradeep, Cupertino, CA (US);
Neelesh Bansod, Sunnyvale, CA (US);
Vamsidhar Valluri, Fremont, CA (US);
Venkatesan Pradeep, Cupertino, CA (US);
Neelesh Bansod, Sunnyvale, CA (US);
Vamsidhar Valluri, Fremont, CA (US);
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Abstract
Transferring a mobile node from one ASN-GW (anchor access service network gateway) to another ASN-GW is referred to as a hand-over. To facilitate transfer of data for the hand-over, a GRE (generic routing encapsulation) tunnel is established between the two ASN-GWs. Traffic through the GRE tunnel arriving at a line card of an ASN-GW is redirected from the arrival line card to the one line card that contains information for the mobile node. The redirection is based on traversal of one or more tables on the line cards. These tables are indexed according to GRE keys corresponding to the mobile nodes. Therefore, the appropriate line card for the traffic can be identified quickly and efficiently using a distributed forwarding plane with minimal provisioning overhead, resulting in lower latency during the hand-over.