Method and apparatus for handoff between source and target access systems
AssigneeQUALCOMM Incorporated
InventorsFatih Ulupinar, Peerapol Tinnakornsrisuphap, Parag Arun Agashe, Ravindra Patwardhan
Life of this patent
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Abstract
Systems and methods for switching among heterogeneous networks and inter-working between a source access system and a target access system. An inter-system handoff control component can facilitate setting an IP tunneling by the mobile unit, wherein IP addresses for inter-working security gateway and Radio Access Network of the target access system can be identified. The inter-system handoff control component can then implement tunneling between the source system and the target system, wherein signaling/packeting associated with the target system can be transferred over the source system.
Claims48
A method of session handoff between a source access system and a target access system comprising:
- discovering an address of the target access system by an access terminal (AT) in communication with the source access system;
- utilizing the address to tunnel a secure channel from the AT to the target access system through the source access system, the tunneling configured for negotiating an air interface session between the AT and the target access system;
- and
- transferring signaling associated with the target access system from the AT via the secure channel to the target access system, wherein the negotiating the air interface session includes obtaining session information stored at the target access system for the air interface session between the AT and the target access system.
An apparatus configured to perform session handoff comprising:
- a processor comprising:
- a processor module for discovering an address of a target access system for tunneling between a source access system and the target access system;
- and
- a processor module for establishing a secure tunnel from an access terminal (AT) to a security gateway of the target access system using the address, the tunnel configured for negotiating an air interface session between the AT and the target access system and extending through the source access system, wherein the negotiating the air interface session includes obtaining session information stored at the target access system for the air interface session between the AT and the target access system;
- and
- a memory coupled with the processor.
A non-transitory computer-readable medium comprising sets of codes stored thereon, which, when executed by a processor, cause the processor to perform session handoff between a source access system and a target access system, the sets of codes comprising:
- a first set of codes for discovering an address of a security gateway of the target access system for tunneling from an access terminal (AT);
- and
- a second set of codes for establishing a secure tunnel to the security gateway of the target access system using the address and for redirecting user traffic to the target access system via the secure tunnel, the secure tunnel configured for negotiating an air interface session between the AT and the target access system, wherein the negotiating the air interface session includes obtaining session information stored at the target access system for the air interface session between the AT and the target access system.
An access terminal (AT), comprising:
- means for discovering an address of a target access system for tunneling from the AT;
- means for establishing a secure channel from the AT through a source access system to a security gateway of the target access system using the address, the secure channel configured for negotiating an air interface session between the AT and the target access system, wherein the negotiating the air interface session includes obtaining session information stored at the target access system for the air interface session between the AT and the target access system;
- and
- means for transmitting signals through the secure channel.
A method of session handoff between a source access system and a target access system comprising:
- discovering an address of the target access system for tunneling from an access terminal (AT);
- tunneling a secure channel from the AT extending through the source access system to the target access system using the address, the tunneling configured for negotiating an air interface session between the AT and the target access system, wherein the negotiating the air interface session includes obtaining session information stored at the target access system for the air interface session between the AT and the target access system;
- and
- receiving user traffic from the target access system at the AT.
An apparatus configured to perform session handoff comprising:
- a processor comprising:
- a processor module for discovering an address of a target access system;
- and
- a processor module for establishing a tunnel from an access terminal (AT) to the target access system using the address, the tunnel comprising a secure channel extending through a source access system and configured for negotiating an air interface session between the AT and the target access system, wherein the negotiating the air interface session includes obtaining session information stored at the target access system for the air interface session between the AT and the target access system;
- a receiver for recieving user traffic from the target access system at the AT;
- and
- a memory coupled with the processor.
A non-transitory computer-readable medium comprising sets of codes stored thereon, which, when executed by a processor, cause the processor to perform session handoff between a source access system and a target access system, the sets of codes comprising:
- a first set of codes for discovering an address of the target access system;
- a second set of codes for establishing a tunnel from an access terminal (AT) to the target access system using the address, the tunnel extending through the source access system and configured for negotiating an air interface session between the AT and the target access system, wherein the negotiating the air interface session includes obtaining session information stored at the target access system for the air interface session between the AT and the target access system;
- and
- a third set of codes for receiving user traffic from the target access system at the AT.
An apparatus for session handoff between a source access system and a target access system comprising:
- means for discovering an address of the target access system for tunneling from an access terminal (AT);
- means for establishing a secure channel to the target access system through the source access system using the address of the target access system, the secure channel configured for negotiating an air interface session between the AT and the target access system, wherein the negotiating the air interface session includes obtaining session information stored at the target access system for the air interface session between the AT and the target access system;
- and
- means for receiving user traffic from the target access system at the AT.
A method of session handoff between a source access system and a target access system comprising:
- communicating, by the target access system, with an access terminal (AT) via the source access system over a tunneled secure channel, the secure channel configured for negotiating an air interface session between the AT and the target access system;
- transmitting, from the target access system to the AT, stored air interface session information for the air interface session between the AT and the target access system;
- establishing a connection with the AT over the negotiated air interface;
- and transmitting user traffic to the AT.
An apparatus configured to perform session handoff comprising:
- a processor module for communicating, by the target access system, with an access terminal (AT) via the source access system over a tunneled secure channel, the secure channel configured for negotiating an air interface session between the AT and the target access system;
- a transmitter for transmitting, from the target access system to the AT, stored air interface session information for the air interface session between the AT and the target access system;
- and
- a processor module for establishing a connection with the AT over the negotiated air interface,
- wherein the transmitter is configured to transmit user traffic to the AT.
An apparatus for session handoff between a source access system and a target access system comprising:
- means for communicating, by the target access system, with an access terminal (AT) via the source access system over a tunneled secure channel, the secure channel configured for negotiating an air interface session between the AT and the target access system;
- means for transmitting, from the target access system to the AT, stored air interface session information for the air interface session between the AT and the target access system;
- and
- means for establishing a connection with the AT over the negotiated air interface,
- wherein the means for transmitting is configured to transmit user traffic to the AT.
A non-transitory computer-readable medium comprising sets of codes stored thereon, which, when executed by a processor, cause the processor to perform session handoff between a source access system and a target access system, the sets of codes comprising:
- a first set of codes for communicating, by the target access system, with an access terminal (AT) via the source access system over a tunneled secure channel, the secure channel configured for negotiating an air interface session between the AT and the target access system;
- a second set of codes for transmitting, from the target access system to the AT, stored air interface session information for the air interface session between the AT and the target access system;
- a third set of codes for establishing a connection with the AT over the negotiated air interface;
- and
- a fourth set of codes for transmitting user traffic to the AT.
Dependencies are inferred from the claim text.