Apparatuses and methods for handling mobility management (MM) back-off timers
AssigneeHTC Corporation
InventorChing-Yu Liao
Life of this patent
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Abstract
A mobile communication device with a wireless module and a controller module is provided. The wireless module performs wireless transceiving to and from a first service network and a second service network. The controller module transmits a first request message for a Mobility Management (MM) procedure to the first service network, and receives a first rejection message with an MM back-off timer corresponding to the first request message from the first service network via the wireless module. Also, the controller module starts the MM back-off timer for the first service network in response to the first rejection message, and transmits a second request message for the MM procedure to the second service network via the wireless module.
Claims12
A mobile communication device, comprising:
- a wireless module performing wireless transceiving to and from a first service network and a second service network;
- and
- a controller module transmitting a first request message for a Mobility Management (MM) procedure to the first service network via the wireless module, receiving a first rejection message with a first MM back-off timer corresponding to the first request message from the first service network via the wireless module, starting the first MM back-off timer for the first service network in response to the first rejection message, transmitting a second request message for the MM procedure to the second service network via the wireless module, receiving a second rejection message with a second MM back-off timer from the second service network via the wireless module, and in response to the second rejection message, keeping the first MM back-off timer running for the first service network when it is not yet expired and starting the second MM back-off timer for the second service network,
- wherein the controller module is coupled to a subscriber identity card, and further stores statuses of the first and second MM back-off timers in the subscriber identity card periodically before the mobile communication device is powered off, or stores the statuses of the first and second MM back-off timers in the subscriber identity card in response to the mobile communication device being powered off.
A method for handling Mobility Management (MM) back-off timers by a mobile communication device coupled to a subscriber identity card, comprising:
- transmitting a first request message for an MM procedure to a first service network;
- receiving a first rejection message with a first MM back-off timer corresponding to the first request message from the first service network;
- starting the first MM back-off timer for the first service network in response to the first rejection messages;
- transmitting a second request message for the MM procedure to a second service network;
- receiving a second rejection message with a second MM back-off timer from the second service network;
- in response to the second rejection message, keeping the first MM back-off timer running for the first service network when it is not yet expired and starting the second MM back-off timer for the second service network;
- and
- storing statuses of the first and second MM back-off timers in the subscriber identity card periodically before the mobile communication device is powered off, or storing the statuses of the first and second MM back-off timers in the subscriber identity card in response to the mobile communication device being powered off.
Dependencies are inferred from the claim text.