Invention Grant
US08355382B2 Method and apparatus for providing WiMAX (worldwide interoperability for microwave access) anchor mode service on a system with distributed forwarding planes
有权
用于在具有分布式转发平面的系统上提供WiMAX（全球微波接入互操作性）锚模式服务的方法和装置
- Patent Title: Method and apparatus for providing WiMAX (worldwide interoperability for microwave access) anchor mode service on a system with distributed forwarding planes
- Patent Title (中): 用于在具有分布式转发平面的系统上提供WiMAX（全球微波接入互操作性）锚模式服务的方法和装置
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Application No.: US12616656Application Date: 2009-11-11
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Publication No.: US08355382B2Publication Date: 2013-01-15
- Inventor: Venkatesan Pradeep , Neelesh Bansod , Vamsidhar Valluri
- Applicant: Venkatesan Pradeep , Neelesh Bansod , Vamsidhar Valluri
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (Publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (Publ)
- Current Assignee Address: SE Stockholm
- Agency: Blakely Sokoloff Taylor & Zafman, LLP
- Main IPC: H04W4/00
- IPC: H04W4/00 ; H04W36/00
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.
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