Mobile IP environment and a method for supporting quality of service for foreign network with a plurality of mobile nodes and foreign agents

摘要

There is disclosed a method of establishing an IP quality of service session between a correspondent node and a mobile node. The mobile node has a home address in a home network and is temporarily connectable in a foreign network having a foreign agent. IP packets are directed to the mobile node from the correspondent node via the home network. The quality of service session is maintained in dependence on flow identification information in the IP packets. The method comprises: determining whether the flow identification information of a quality of service session to be configured matches the flow identification information of an existing quality of service session; and responsive to a match, allocating temporary flow identification information to the quality of service session to be configured. A mobile IP environment in which such a method may be utilised is also disclosed. IMAGE