Method and apparatus for the prevention of a service degradation attack
AssigneeNtt Docomo, Inc.
InventorsAlf Zugenmaier, Guido Dietl
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Abstract
In a wireless communication system where the data transmission is optimized with respect to the channel state information fed back by the users, a service degradation attack can be made by feeding back faked channel state information. A method for preventing a service degradation attack on a first wireless communication device by a second wireless communication device in a wireless communication system, said method comprising: verifying by a base station whether the channel state information sent to the base station by the second wireless communication device corresponds to its real channel.
Claims14
A method for preventing a service degradation attack on a first wireless communication device by a second wireless communication device in a wireless communication system, said method comprising:
- verifying by a base station whether channel state information sent to the base station by the second wireless communication device corresponds to its real channel;
- said method further comprising:
- monitoring or checking an indicator to determine whether it can be regarded as indicating a fake channel information corresponding to an attack.
The method according to any of the preceding claims further comprising:
- preventing an attack by lowering priority of a suspected attacker in a scheduler.
An apparatus for preventing a service degradation attack on a first wireless communication device by a second wireless communication device in a wireless communication system, said apparatus comprising:
- a module for verifying whether channel state information sent to the base station by the second wireless communication device corresponds to its real channel, said apparatus further comprising:
- means for monitoring or checking an indicator to determine whether it can be regarded as indicating a fake channel information corresponding to an attack.
Dependencies are inferred from the claim text.