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US 8,045,569 B1Granted
Mechanism to verify packet data network support for internet protocol mobility
AssigneeMarvell International Ltd.
InventorsFan Zhao, Stefano Faccin, Ameya Damle
Life of this patent
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Abstract
An access router includes a wireless network interface, an address assignment module, and an availability module. The wireless network interface establishes a wireless link with a wireless terminal. The address assignment module determines a list of packet data networks for use by the wireless terminal. The availability module determines a mobile internet protocol availability for each packet data network in the list of packet data networks and generates an availability signal based on each mobile internet protocol availability. The address assignment module transmits an address assignment message that includes the availability signal to the wireless terminal.
Claims28
An access router comprising:
- a wireless network interface that establishes a wireless link with a wireless terminal;
- an address assignment module that determines a list of packet data networks for use by the wireless terminal;
- and
- an availability module that determines a mobile internet protocol availability for each packet data network in the list of packet data networks and that generates an availability signal based on each mobile internet protocol availability,
- wherein the address assignment module transmits an address assignment message that includes the availability signal to the wireless terminal,
- wherein each of the mobile internet protocol availabilities has a first state when a respective packet data network in the list of packet data networks is routable from the access router and the access router allows mobile internet protocol between the respective packet data network and the wireless terminal, and
- wherein each of the mobile internet protocol availabilities has a second state when at least one of the respective packet data network is not routable from the access router and the access router disallows mobile internet protocol between the respective packet data network and the wireless terminal.
4 more elements
A wireless terminal comprising:
- a wireless network interface that establishes a wireless link with an access router;
- an address determination module that receives an address assignment message including an availability signal from the access router and that instructs the wireless network interface to disconnect from the access router based on the availability signal, wherein the availability signal indicates availability of mobile interne protocol connection with at least one packet data network;
- and
- an application module that initiates connectivity with a list of desired packet data networks including the at least one packet data network, wherein the address determination module instructs the wireless network interface to disconnect from the access router when the availability signal indicates that connectivity is not available for any packet data network in the list of desired packet data networks.
1 more element
A method of operating an access router, comprising:
- establishing a wireless link with a wireless terminal;
- determining a list of packet data networks for use by the wireless terminal;
- determining a mobile internet protocol availability for each packet data network in the list of packet data networks;
- generating an availability signal based on each mobile internet protocol availability;
- and
- transmitting an address assignment message that includes the availability signal to the wireless terminal,
- wherein each of the mobile internet protocol availabilities has a first state when a respective packet data network in the list of packet data networks is routable from the access router and the access router allows mobile interne protocol between the respective packet data network and the wireless terminal, and
- wherein each of the mobile interne protocol availabilities has a second state when at least one of the respective packet data network is not routable from the access router and the access router disallows mobile internet protocol between the respective packet data network and the wireless terminal.
5 more elements
A method of operating a wireless terminal, comprising:
- establishing a wireless link with an access router;
- receiving an address assignment message including an availability signal from the access router, wherein the availability signal indicates availability of mobile internet protocol connection with at least one packet data network;
- selectively disconnecting from the access router based on the availability signal;
- initiating connectivity with a list of desired packet data networks including the at least one packet data network;
- and
- disconnecting from the access router when the availability signal indicates that, for each packet data network in the list of desired packet data networks, connectivity is not available.
3 more elements
Dependencies are inferred from the claim text.