ABNORMALITY DETECTION APPARATUS AND ABNORMALITY DETECTION METHOD
First Claim
1. An abnormality detection apparatus for a mobility entity and for detecting an abnormality in a network system, the network system including a first network and a second network that use different communication protocols, the abnormality detection apparatus comprising:
- a first communication circuit that receives state information indicating a state of the mobility entity, the state information being acquired from the second network;
a second communication circuit that transmits and receives a first frame according to a communication protocol used in the first network;
a memory that stores an abnormality detection rule; and
a processor that, in operation, performs operations including;
detecting, based on the state information and the abnormality detection rule, whether a control command included in the first frame received by the second communication circuit is abnormal, andin a case where the processor detects that the control command is abnormal, prohibiting the control command from being transmitted.
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Accused Products
Abstract
An abnormality detection apparatus for a mobility entity and for detecting an abnormality in a network system is provided. The network system includes a first network and a second network that use different communication protocols. A first communication circuit receives state information indicating a state of the mobility entity. The state information is acquired from the second network. A second communication circuit transmits and receives a first frame according to a communication protocol used in the first network. A memory stores an abnormality detection rule. A processor detects, based on the state information and the abnormality detection rule, whether a control command included in the first frame received by the second communication circuit is abnormal. In a case where the control command is abnormal, the processor prohibits the control command from being transmitted.
5 Citations
11 Claims
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1. An abnormality detection apparatus for a mobility entity and for detecting an abnormality in a network system, the network system including a first network and a second network that use different communication protocols, the abnormality detection apparatus comprising:
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a first communication circuit that receives state information indicating a state of the mobility entity, the state information being acquired from the second network; a second communication circuit that transmits and receives a first frame according to a communication protocol used in the first network; a memory that stores an abnormality detection rule; and a processor that, in operation, performs operations including; detecting, based on the state information and the abnormality detection rule, whether a control command included in the first frame received by the second communication circuit is abnormal, and in a case where the processor detects that the control command is abnormal, prohibiting the control command from being transmitted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An abnormality detection method for an abnormality detection apparatus that is configured to be in a mobility entity for detecting an abnormality in a network system, the network system including a first network and a second network that use different communication protocols, the abnormality detection method comprising:
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receiving state information indicating a state of the mobility entity, the state information being acquired from the second network; transmitting and receiving a first frame using a communication protocol of the first network; detecting, based on the state information and an abnormality detection rule stored in a memory included in the abnormality detection apparatus, whether a control command included in the received first frame is abnormal; and in a case where the control command is abnormal, prohibiting the control command from being transmitted.
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Specification