Mobile Communication Devices and Deciphering Methods
First Claim
1. A mobile communication device, comprising:
- a wireless module, arranged for performing wireless transmission and reception to and from a service network; and
a controller module, arranged for receiving a first ciphered data packet from the service network via the wireless module, deciphering the first ciphered data packet according to a first ciphering-deciphering parameter, and deciphering the first ciphered data packet according to a second ciphering-deciphering parameter in response to unsuccessful deciphering of the first ciphered data packet according to the first ciphering-deciphering parameter,wherein the second ciphering-deciphering parameter is for deciphering a second ciphered data packet received prior to the first ciphered data packet from the service network.
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Accused Products
Abstract
A wireless communications device with a wireless module and a controller module is provided. The wireless module is arranged for performing wireless transmission and reception to and from a service network. The controller module is arranged for receiving a first ciphered data packet from the service network via the wireless module, and deciphering the first ciphered data packet according to a first deciphering parameter. Also, the controller module is arranged for deciphering the first ciphered data packet according to a second deciphering parameter in response to unsuccessful deciphering of the first ciphered data packet according to the first deciphering parameter. Particularly, the second deciphering parameter is for deciphering a second ciphered data packet received prior to the first ciphered data packet from the service network.
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Citations
22 Claims
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1. A mobile communication device, comprising:
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a wireless module, arranged for performing wireless transmission and reception to and from a service network; and a controller module, arranged for receiving a first ciphered data packet from the service network via the wireless module, deciphering the first ciphered data packet according to a first ciphering-deciphering parameter, and deciphering the first ciphered data packet according to a second ciphering-deciphering parameter in response to unsuccessful deciphering of the first ciphered data packet according to the first ciphering-deciphering parameter, wherein the second ciphering-deciphering parameter is for deciphering a second ciphered data packet received prior to the first ciphered data packet from the service network. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A deciphering method, applied to a mobile communication device wirelessly connected to a service network, the method comprising:
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receiving a first ciphered data packet from the service network; deciphering the first ciphered data packet according to a first ciphering-deciphering parameter; and deciphering the first ciphered data packet according to a second ciphering-deciphering parameter in response to unsuccessful deciphering of the first ciphered data packet according to the first ciphering-deciphering parameter, wherein the second ciphering-deciphering parameter is for deciphering a second ciphered data packet received prior to the first ciphered data packet from the service network. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A mobile communication device, comprising:
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a wireless module, arranged for performing wireless transmission and reception to and from a service network; and a controller module, arranged for receiving a ciphered data packet from the service network via the wireless module, deciphering the ciphered data packet according to a ciphering-deciphering parameter, and transmitting the ciphering-deciphering parameter to the service deciphering of the ciphered data packet according to the ciphering-deciphering parameter, so that the service network ciphers subsequent data packets to be transmitted according the ciphering-deciphering parameter. - View Dependent Claims (14, 15, 16, 17)
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18. A deciphering method, applied to a mobile communication device wirelessly connected to a service network, the method comprising:
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receiving a ciphered data packet from the service network; deciphering the ciphered data packet according to a ciphering-deciphering parameter; and transmitting the ciphering-deciphering parameter to the service network in response to unsuccessful deciphering of the ciphered data packet according to the ciphering-deciphering parameter, so that the service network ciphers subsequent data packets to be transmitted according the ciphering-deciphering parameter. - View Dependent Claims (19, 20, 21, 22)
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Specification