Hierarchical mobility management for wireless networks
First Claim
1. A method for routing packets to a mobile node comprising the steps of:
- providing an address update, including a regional address associated with the mobile node, to a node communicating with the mobile node;
sending packets, from the node communicating with the mobile node, to a node associated with the regional address;
receiving packets at the node associated with the regional address;
determining, at the node associated with the regional address, the current address of the mobile node;
routing the received packets to a node associated with the current address of the mobile node;
forwarding packets, from the node associated with the current address, to the mobile node.
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Abstract
Methods and apparatus for providing a hierarchical mobility management function for routing packets to mobile nodes are provided. The hierarchical mobility management function may be placed anywhere within the network and provide efficient use of IPv6 addresses. A node implementing the hierarchical mobility management function receives packets intended for the mobile node and routes the packets to the mobile node'"'"'s current address. Load sharing of packets intended for a mobile node may be implemented across several access routers. Additional, bi-casting of packets is provided to allow for seamless handoff of the mobile node as it switches from one access router to another access router.
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Citations
32 Claims
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1. A method for routing packets to a mobile node comprising the steps of:
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providing an address update, including a regional address associated with the mobile node, to a node communicating with the mobile node;
sending packets, from the node communicating with the mobile node, to a node associated with the regional address;
receiving packets at the node associated with the regional address;
determining, at the node associated with the regional address, the current address of the mobile node;
routing the received packets to a node associated with the current address of the mobile node;
forwarding packets, from the node associated with the current address, to the mobile node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A network comprising:
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a mobile node;
a node communicating with the mobile node, wherein the mobile node provides an address update, including a regional address associated with the mobile node, to the node communicating with the mobile node;
a node associated with the regional address, wherein the node communicating with the mobile node sends packets to the node associated with the regional address;
a node associated with a current address of the mobile node, wherein the node associated with the current address of the mobile node receives packets from the node associated with the regional address of the mobile node and sends the received packets to the mobile node. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification