Device and method of handling mobility management
AssigneeHTC Corporation
InventorChih-Hsiang Wu
Life of this patent
Estimating the term…
Abstract
A communication device for handling mobility management includes a storage unit for storing instructions and a processing circuit coupled to the storage unit. The processing circuit is configured to execute the instructions stored in the storage unit. The communication device performs attaching to a first network and not having an active Packet Data Network (PDN) connection with the first network; selecting a second network after attaching to the first network; initiating an attach procedure to the second network, if the second network does not support an attach without the PDN connection establishment; and initiating a tracking area update (TAU) procedure to the second network, if the second network supports the attach without the PDN connection establishment.
Claims13
A user equipment for handling mobility management, comprising:
- a storage unit, for storing instructions of:
- attaching to a first network and not having a Packet Data Network (PDN) connection with the first network;
- selecting a second network after attaching to the first network and not having the PDN connection with the first network;
- determining whether the second network supports an attach without the PDN connection establishment by receiving a broadcast signaling from the second network;
- initiating an attach procedure to the second network, if the broadcast signaling indicates that the second network does not support the attach without the PDN connection establishment;
- and
- initiating a tracking area update (TAU) procedure to the second network, if the broadcast signaling indicates that the second network supports the attach without the PDN connection establishment;
- and
- a processing circuit, coupled to the storage unit, configured to execute the instructions stored in the storage unit.
A user equipment for handling mobility management, comprising:
- a storage unit, for storing instructions of:
- attaching to a network via a first area of the network and not having a Packet Data Network (PDN) connection with the network;
- selecting a second area of the network after attaching to the network via the first area;
- determining whether the second area supports an attach without the PDN connection establishment;
- initiating an attach procedure to the network via the second area, if the second area does not support the attach without the PDN connection establishment;
- and
- initiating a tracking area update (TAU) procedure to the network via the second area, if the second area supports the attach without the PDN connection establishment;
- and
- a processing circuit, coupled to the storage unit, configured to execute the instructions stored in the storage unit.
A first network for handling mobility management, comprising:
- a storage unit, for storing instructions of:
- receiving a tracking area update (TAU) request message from a user equipment which moves from a second network to the first network, wherein the user equipment does not have a Packet Data Network (PDN) connection with the second network;
- determining whether the user equipment supports an attach without a PDN connection establishment;
- transmitting a TAU accept message to the user equipment in response to the TAU request message, when determining that the user equipment supports the attach without the PDN connection establishment;
- and
- transmitting a TAU reject message to user equipment in response to the TAU request message, when determining that the user equipment does not support the attach without the PDN connection establishment;
- and
- a processing circuit, coupled to the storage unit, configured to execute the instructions stored in the storage unit.
Dependencies are inferred from the claim text.