Telecommunications routing
First Claim
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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Accused Products
Abstract
A method of controlling routing of packets in a communications network 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.
30 Citations
16 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of controlling routing of packets in a communications network 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:
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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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Specification