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Telecommunications routing

  • US 20040029601A1
  • Filed: 04/03/2003
  • Published: 02/12/2004
  • Est. Priority Date: 10/26/2000
  • Status: Active Grant
First Claim
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1. A method of controlling routing of packets in a routing domain including an infrastructure of packet switching nodes interconnected by packet transport links, and a plurality of access nodes to which a routing path, defined by data held in packet switching nodes located along said routing path, may be directed in said infrastructure for a given network address, said method comprising:

  • routing packets along a first routing path for a first network address, which routing path is directed to a first access node serving a mobile node using said first network address via a communications link;

    handing over the communications link of the mobile node, such that a second access node serves said mobile node; and

    altering said first routing path using a first type of routing update to create a second routing path for said first network address, directed to said second access node;

    routing packets to said second access node via said second routing path;

    handing over the communications link of the mobile node, such that a third access node serves said mobile node; and

    altering routing in said infrastructure using a second type of routing update, different to said first type of update, to create a third routing path for said network address, directed to said third access node; and

    routing packets to said third access node via said third routing path.

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