System and method for managing foreign agent selections in a mobile internet protocol network
First Claim
1. A method for providing Internet Protocol communication services in a communication network, the method comprising:
- detecting a communication session associated with a client device on a first network device;
sending a first message from the first network device to a second network device, the first message comprising a registration request;
determining on the second network device a network address of a third network device for providing communication services for the communication session associated with the client device;
sending a first response message from the second network device to the first network device, the first response message comprising a registration reply message including the network address of the third network device; and
establishing a communication session between the client device and the third network device specified in the first response reply message, the third network device arranged to provide communication services to the client network device.
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Accused Products
Abstract
A system and methods are shown for providing Internet Protocol communication services to a mobile client. One method includes sending a registration request from a radio node to a control node responsive to detecting a mobile client in a service area of the radio node. When the control node receives the request from the radio node, the control node determines a foreign agent to provide communication services to the mobile client. In one embodiment, the control node determines the foreign agent based on a mobile client information record, a radio node record, and a plurality of foreign agent records associated with the radio node. In one embodiment, the control node may select a last serving foreign agent associated with the mobile client. Alternatively, if the control node selects a different foreign agent than the last serving foreign agent, the control node sends a registration update message to the last serving foreign agent so that the last serving foreign agent may terminate any communication sessions associated with the mobile client.
76 Citations
27 Claims
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1. A method for providing Internet Protocol communication services in a communication network, the method comprising:
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detecting a communication session associated with a client device on a first network device; sending a first message from the first network device to a second network device, the first message comprising a registration request; determining on the second network device a network address of a third network device for providing communication services for the communication session associated with the client device; sending a first response message from the second network device to the first network device, the first response message comprising a registration reply message including the network address of the third network device; and establishing a communication session between the client device and the third network device specified in the first response reply message, the third network device arranged to provide communication services to the client network device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for providing Internet Protocol communication services in a communication network, the method comprising:
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receiving a registration request message from a radio node on a control node, the registration request message comprising a request to register a mobile client detected on the radio node with a foreign agent; determining whether the mobile client is associated with at least one active communication session;
if so,determining a last serving foreign agent associated with the mobile client; determining whether the last serving foreign agent is available and associated with the radio node; and
, if so,sending a registration reply message from the control node to the radio node, the registration reply message comprising a network address of the last serving foreign agent. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An Internet Protocol working device for providing Internet Protocol communication services to mobile client devices, the device comprising:
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a central processing unit; a first interface for communicating with at least one radio node, the first interface for receiving a registration request message from a radio node upon detecting a communication session associated with a mobile client on a radio node; a second interface for communicating with a plurality of network device comprising a plurality of foreign agents, the second interface for receiving load status information data and mobile client information data from the plurality of network devices comprising the plurality of foreign agents; at least one memory unit for storing the mobile client information data and the load status information data; a computer readable medium comprising a first set of instructions executed by a computer for processing the registration request message from the radio node responsive to receiving the registration request message from the radio node and for generating a registration reply message comprising a network address of at least one of the plurality of network devices comprising the plurality of foreign agents; wherein the network address specified in the registration reply message is determined using a second set of instructions for selecting network devices comprising foreign agents upon receiving registration request messages from the at least one radio node, the second set of instructions arranged to use the client device information data and the load status information data stored in the at least one memory unit. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification