Multiple carrier attachment establishment and maintenance
First Claim
1. A method, executed by a mobile station (MS) attached to a supporting wireless wide area network (WWAN), for attaching to a target WWAN while maintaining the attachment to the supporting WWAN, the method comprising:
- transmitting, via a physical uplink channel with a radio access network (RAN) of the supporting WWAN, an attach request message to be forwarded by a core network gateway of the supporting WWAN to a generic access network controller of a generic access network (GAN) of the target WWAN via another network;
receiving, via a physical downlink channel with the RAN of the supporting WWAN, an attach accept message forwarded by the core network gateway of the supporting WWAN from the generic access network controller of the GAN of the target WWAN via the another network; and
after receiving the attach accept message, transmitting, via the physical uplink channel with the RAN of the supporting WWAN, a handover request message to be forwarded by the core network gateway of the supporting WWAN to the generic access network controller of the GAN of the target WWAN via the another network.
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Accused Products
Abstract
Systems and methods are described herein that facilitate attaching a mobile station to a target wireless network through a physical connection between the mobile station and a supporting wireless network. Uplink and downlink channels between the mobile station and the target wireless network tunnel through the supporting wireless network. The systems and methods described herein thereby enable a mobile station with a single transceiver to become simultaneously attached to multiple wireless networks. The systems and methods described herein further support the handover of a mobile station from a generic access component of a mobile network to a radio access component and the handover of a mobile station from a radio access component of a mobile network to a generic access component of the mobile network thus facilitating rapid transitions from one mobile network air interface to another.
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Citations
19 Claims
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1. A method, executed by a mobile station (MS) attached to a supporting wireless wide area network (WWAN), for attaching to a target WWAN while maintaining the attachment to the supporting WWAN, the method comprising:
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transmitting, via a physical uplink channel with a radio access network (RAN) of the supporting WWAN, an attach request message to be forwarded by a core network gateway of the supporting WWAN to a generic access network controller of a generic access network (GAN) of the target WWAN via another network; receiving, via a physical downlink channel with the RAN of the supporting WWAN, an attach accept message forwarded by the core network gateway of the supporting WWAN from the generic access network controller of the GAN of the target WWAN via the another network; and after receiving the attach accept message, transmitting, via the physical uplink channel with the RAN of the supporting WWAN, a handover request message to be forwarded by the core network gateway of the supporting WWAN to the generic access network controller of the GAN of the target WWAN via the another network. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method, executed by a target wireless wide area network (WWAN), for attaching a mobile station (MS) already attached to a supporting WWAN, the method comprising:
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receiving, from the MS via a physical uplink channel between the MS and a transceiver of the supporting WWAN, an attach request message forwarded by a core network gateway of the supporting WWAN via another network; establishing a service uplink channel with the MS and a service downlink channel with the MS that both include the core network gateway of the supporting WWAN; and after receiving the attach request message, receiving, from the MS via the physical uplink channel between the MS and the transceiver of the supporting WWAN, a handover request message forwarded by the core network gateway of the supporting WWAN via the another network. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A mobile station configured to connect to a generic access network (GAN) of a target WWAN via a radio access network (RAN) of a supporting WWAN, the mobile station comprising:
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a processor configured to construct an attach request message addressed to a generic access network controller of the GAN of the target WWAN; a radio frequency (RF) transceiver configured to; transmit, via a physical uplink channel with the RAN of the supporting WWAN, the attach request message to be forwarded by a core network gateway of the supporting WWAN to the generic access network controller of the GAN of the target WWAN via another network; and receive, via a physical downlink channel with the RAN of the supporting network, an attach accept message forwarded by the core network gateway of the supporting WWAN from the generic access network controller of the GAN of the target WWAN via the another network, the attach accept message including a packet data network (PDN) address; and a processor readable storage medium configured to store an association relationship between an identifier of a subscription with the target WWAN and the PDN address. - View Dependent Claims (19)
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Specification