Apparatus, and associated method, for facilitating bi-directional routing of data in a packet radio communication system
AssigneeAlcatel Lucent
InventorsMingguey Michael Yang, Vinod Kumar Choyi
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Abstract
Apparatus, and an associated method, for facilitating routing of packet-formatted data in a packet radio communication system. When a mobile node roams out of its home network and into a foreign network, data routing is facilitated. A UPA (unique private address) tunnel, is selectably formed between the mobile node and a foreign agent. And, a UDP/MIP (User Datagram Protocol/Mobile IP) tunnel is selectably formed between the foreign agent and a home agent. Problems otherwise associated with the private address conflict and NAT/NAPT device traversal are avoided.
Claims18
In a packet radio communication system having a mobile network comprising a home network having a home agent associated therewith and a foreign network having a foreign agent associated therewith, and a mobile node selectably identified by a nonuniversal identifier address, an apparatus for facilitating bi-directional routing of data with the mobile node when the mobile node is positioned at the foreign network, said apparatus comprising:
- a determiner located at the foreign network, said determiner for determining whether the mobile node is identified by the nonuniversal identifier address and for determining whether the nonuniversal identifier address of the mobile node conflicts with the nonuniversal identifier address of other node(s) associated with the foreign network;
- a message generator operably responsive to determinations made by said determiner that the mobile node is identified by the nonuniversal identifier address and the address conflict with the nonuniversal identifier address of other node(s) associated with the foreign network, said message generator for generating a message for communication with the mobile node, and wherein the message generator generates a message for alerting the mobile node to obtain a unique private address, the unique private address used to form a first data tunnel between the mobile node and the foreign agent;
- and
- wherein the foreign network of the packet radio communication system comprises a DHCP (Dynamic Host Configuration Protocol) device and wherein the message generated by said message generator causes the mobile node to obtain values of the unique private address from the DHCP device.
In a packet radio communication system having a mobile node, the packet radio communication system communicating packet-formatted data and having a home network and a foreign network, the home network having a home agent associated therewith and the foreign network having a foreign agent associated therewith, the mobile node selectably identified by a nonuniversal identifier address, a method for facilitating bi-directional routing of data with the mobile node when the mobile node is positioned at the foreign network, said method comprising:
- determining, at the foreign network, whether the mobile node is identified by the nonuniversal identifier address, and, responsive thereto, wherein the foreign network comprises a DHCP (Dynamic Host Configuration Protocol) device;
- and
- generating a message for communication to the mobile node, the message at least for alerting the mobile node to obtain a unique private address, the unique private address used to form a first data tunnel between the mobile node and the foreign agent;
- and
- analyzing, at the mobile node, values contained in the message, and, selectably responsive thereto obtaining values of the unique private address from the DHCP device.
Dependencies are inferred from the claim text.