Method for requesting, generating and distributing service-specific traffic encryption key in wireless portable internet system, apparatus for the same, and protocol configuration method for the same
First Claim
1. A method for requesting an encryption key by a subscriber station in a wireless communication system, the method comprising:
- determining a service type of a traffic connection;
transmitting a first message including an identifier corresponding to the service type that requests an encryption key corresponding to the service type to a base station; and
receiving a second message including the encryption key corresponding to the service type from the base station,wherein the encryption key is generated according to the determined service type before establishing a traffic connection with the base station,wherein, when the encryption key is not generated for the determined service type, the base station generates a Key Reject message including an error code indicating a failure reason and the generated Key Reject message is sent to the subscriber station using a MAC message, andwherein the base station sends an unsupported service type error code to the subscriber station when the encryption key is not generated for the determined service type.
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Accused Products
Abstract
Disclosed are a method for requesting, generating and distributing a service-specific traffic encryption key in a wireless portable Internet system, an apparatus for the same, and a protocol configuration method for the same. In the present invention, a subscriber station sends a Key Request message for requesting a service-specific traffic encryption key to the base station using a PKM-REQ MAC message, and a base station analyzes the Key Request message to generate the requested service-specific traffic encryption key. Subsequently, the base station sends a Key Reply message, including the generated service-specific traffic encryption key, to the subscriber station using a PKM-RSP MAC message. If the base station fails to generate the key, the base station sends a Key Reject message, including a reason for the failure, to the subscriber station.
19 Citations
20 Claims
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1. A method for requesting an encryption key by a subscriber station in a wireless communication system, the method comprising:
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determining a service type of a traffic connection; transmitting a first message including an identifier corresponding to the service type that requests an encryption key corresponding to the service type to a base station; and receiving a second message including the encryption key corresponding to the service type from the base station, wherein the encryption key is generated according to the determined service type before establishing a traffic connection with the base station, wherein, when the encryption key is not generated for the determined service type, the base station generates a Key Reject message including an error code indicating a failure reason and the generated Key Reject message is sent to the subscriber station using a MAC message, and wherein the base station sends an unsupported service type error code to the subscriber station when the encryption key is not generated for the determined service type. - View Dependent Claims (2, 3, 4)
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5. A method for distributing an encryption key by a base station in a wireless communication system, the method comprising:
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receiving a first message including an identifier corresponding to a service type of a traffic connection to request the encryption key from a subscriber station; generating the encryption key corresponding to the service type; generating a second message including the encryption key; transmitting the second message including the encryption key to the subscriber station; and transmitting a Key Reject message, which includes an unsupported service type error code, to the subscriber station using a MAC message, when the controller generates an error for the request of the encryption key from the subscriber station for the service type being unsupported. - View Dependent Claims (6, 7, 8, 9, 10)
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11. An apparatus for requesting an encryption key in a wireless communication system, the apparatus comprising:
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a transmitter for transmitting a first message requesting the encryption key to a base station; a receiver for receiving a second message from the base station; and a controller for determining a service type of a traffic connection, generating the first message including an identifier corresponding to the service type, transmitting the first message to the base station through the transmitter to request an encryption key corresponding to the service type, and receiving the second message including the encryption key corresponding to the service type from the base station through the receiver, wherein the encryption key is generated according to the determined service type before establishing a traffic connection with the base station, wherein, when the encryption key is not generated for the determined service type, the base station generates a Key Reject message including an error code indicating a failure reason and the generated Key Reject message is sent to the subscriber station using a MAC message, and wherein the base station sends an unsupported service type error code to the subscriber station when the encryption key is not generated for the determined service type. - View Dependent Claims (12, 13, 14, 15)
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16. An apparatus for distributing an encryption key in a wireless communication system, the apparatus comprising:
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a receiver for receiving a first message including an identifier corresponding to a service type of a traffic connection to request the encryption key from a subscriber station; a generator for generating the encryption key corresponding to the service type; a transmitter for transmitting a second message to the subscriber station; a controller for receiving the first message from the subscriber station through the receiver, generating the encryption key corresponding to the service type, and generating the second message including the encryption key; and a Key Reject transmitter for transmitting a Key Reject message, which includes an unsupported service type error code, to the subscriber station using a MAC message, when the controller generates an error for the request of the encryption key from the subscriber station for the service type being unsupported. - View Dependent Claims (17, 18, 19, 20)
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Specification