Method for realizing mobile IP management and the network system thereof

A method for realizing mobile IP management, comprising:

• sending, by a mobile node, a mobility registration signal to a mobility control (MC) entity in a control function entity of a transmission layer of a network;
• registering the mobile node, returning a registration response to the mobile node and transmitting a control signal to a mobility forwarding (MF) entity in the transmission layer by a home mobility control entity of the mobile node;
• and
• controling, by the mobility control entity, the mobility forwarding entity after the mobility control entity receives a request signal from the mobile node, to provide communication services for the mobile node;
• transmitting directly the sent mobility registration signal to the home mobility control entity when the mobile node is in a foreign network, or transmitting the sent mobility registration signal to the home mobility control entity via a foreign mobility control entity of a foreign network where the mobile node resides when the mobile node is in the foreign network;
• when the mobile node is in the foreign network, transmitting a route optimization request to the home mobility control entity by the mobile node after the mobile node completes the switching and transmitting the route optimization request to a mobility control entity in which the correspondent node resides after the route optimization request is approved;
• and establishing an optimized communication channel after the mobile node receives a route optimization response and forwarding packets by a mobility forwarding entity in which the correspondent node resides;
• acquiring a care-of address from the foreign network by the mobile node prior to sending a mobility registration signal when the mobile node switches registration, and carrying the care-of address in the mobility registration signal;
• acquiring information on quality of service of the mobile node and applying the information to service control by the mobility control entity during the switching.

A method for realizing mobility management in a NGN network system, comprising steps of:

• transmitting a registration message to the NGN network by a mobile node, and registering the mobile node and returning a registration response to the mobile node by a function entity for registration in the NGN network;
• transmitting a mobile registration message to the NGN network by the mobile node after the mobile node receives a successful registration response, and registering the mobile node and returning a registration response to the mobile node by a home function entity for mobility management of the user in the NGN network;
• and
• providing corresponding communication services base on a request from the mobile node by the function entity for mobility management in the NGN network after the mobility registration of the mobile node is successful;
• transmitting directly the sent mobility registration signal to a home mobility control entity when the mobile node is in a foreign network, or transmitting the sent mobility registration signal to the home mobility control entity via a foreign mobility control entity of a foreign network where the mobile node resides when the mobile node is in the foreign network;
• when the mobile node is in the foreign network, transmitting a route optimization request to the home mobility control entity by the mobile node after the mobile node completes the switching and transmitting the route optimization request to a mobility control entity in which the correspondent node resides after the route optimization request is approved;
• and establishing an optimized communication channel after the mobile node receives a route optimization response and forwarding packets by a mobility forwarding entity in which the correspondent node resides;
• acquiring a care-of address from the foreign network by the mobile node prior to sending a mobility registration signal when the mobile node switches registration, and carrying the care-of address in the mobility registration signal;
• acquiring information on quality of service of the mobile node and applying the information to service control by the mobility control entity during the switching.