Apparatus and Method to Perform LTE/WLAN Handoff by Keeping LTE Attached or in Suspended State
First Claim
1. A mobile communication device, comprising:
- a cellular transceiver configured to wirelessly communicate with a cellular network; and
processor circuitry, coupled to the cellular transceiver, configured to;
receive, using the cellular transceiver, a request to disconnect a first Public Data Network (PDN) of a plurality of PDNs from the cellular network,determine whether more than one PDN of the plurality of PDNs is connected to the cellular network, anddisconnect the first PDN of the plurality of PDNs from the cellular network in response to determining that more than one PDN of the plurality of PDNs is connected to the cellular network.
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Accused Products
Abstract
Systems and methods are disclosed to provide offloading procedures that reduce signaling load. Specifically, embodiments of the present disclosure provide offloading techniques that enable signaling overhead caused by attachment procedures to be avoided when user equipment (UE) reconnects to a cellular network after offloading data to a Wireless Local Area Network (WLAN). According to an embodiment, at least one Public Data Network (PDN) is kept connected through the cellular network access when other PDN connections are offloaded to WLAN. According to another embodiment, a PDN connection through cellular network access is suspended, rather than detached, when data is offloaded to WLAN.
17 Citations
20 Claims
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1. A mobile communication device, comprising:
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a cellular transceiver configured to wirelessly communicate with a cellular network; and processor circuitry, coupled to the cellular transceiver, configured to; receive, using the cellular transceiver, a request to disconnect a first Public Data Network (PDN) of a plurality of PDNs from the cellular network, determine whether more than one PDN of the plurality of PDNs is connected to the cellular network, and disconnect the first PDN of the plurality of PDNs from the cellular network in response to determining that more than one PDN of the plurality of PDNs is connected to the cellular network. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method, comprising:
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receiving, using a cellular transceiver, a request to disconnect a first Public Data Network (PDN) of a plurality of PDNs from a cellular network; determining, using processor circuitry, whether more than one PDN of the plurality of PDNs is connected to the cellular network; and disconnecting, using the processor circuitry, the first PDN of the plurality of PDNs from the cellular network in response to determining that more than one PDN of the plurality of PDNs is connected to the cellular network. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A mobile communication device, comprising:
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a cellular transceiver configured to wirelessly communicate with a cellular network; a wireless local area network (WLAN) transceiver configured to wirelessly communicate with a WLAN access point; processor circuitry, coupled to the cellular transceiver and the WLAN transceiver, configured to; send a request to suspend a connection to the cellular network using the cellular transceiver, receive a message indicating that the connection to the cellular network is suspended using the cellular transceiver, send data over the WLAN access point using the WLAN transceiver while the connection to the cellular network is suspended, send a request to resume communication with the cellular network using the cellular transceiver, and receive a message indicating that communication with the cellular network is resumed using the cellular transceiver. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification