| 主权项 |
1. A telecommunications system operable to provide a facility
for a plurality of communications sessions to a plurality of respective mobile nodes using an internet protocol, the system comprising: for each mobile node: a first packet data network operable to communicate internet packets to and from the mobile node to provide the communications session, when the mobile node is affiliated with the first packet data radio network, and a second packet data network operable to communicate internet packets to and from the mobile node to provide the communications session, when the mobile node is affiliated with the second packet data network, wherein, when changing affiliation from one of the first and second packet data networks to the other of the first and second packet data networks, the mobile node is configured: to generate a service level identifier representing a requested priority to be afforded to the internet packets communicated to and from the mobile node with respect to other internet packets communicated to and from other nodes, to generate a binding update internet packet providing a care of address of the mobile node when the mobile node changes affiliation from one of the first and second packet data networks to the other of the first and second packet data networks, to include an indication of the service level identifier in the binding update internet packet, and to communicate the binding update internet data packets to a home agent of the mobile node, the home agent operable in response to a plurality of binding updates communicated respectively by the plurality of mobile nodes: to identify the service level identifier in each binding update, to differentiate a priority for each communicated binding update based on the requested priority represented by the identified service level identifier, and to process the binding updates based on the differentiated priorities. |
