communication method of wireless sensor network
The present invention relates to a communication method for a wireless sensor network, which provides a time synchronization method capable of determining a capture note in a wireless sensor network and being safe from a Byzantine failure attributable to a node capture attack. The communication meth...
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Format: | Patent |
Sprache: | eng ; kor |
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Zusammenfassung: | The present invention relates to a communication method for a wireless sensor network, which provides a time synchronization method capable of determining a capture note in a wireless sensor network and being safe from a Byzantine failure attributable to a node capture attack. The communication method for a wireless sensor network comprises the steps of: broadcasting, by a reference node, a first synchronization reference packet when a packet for a request for a start of time synchronization is received from a high-rank node; transmitting, by the high-rank node, a response packet, including a first reception time at which the first synchronization reference packet has been received, to the reference node; broadcasting, by the reference node, a second synchronization reference packet including the first reception time; performing, by one or more nodes adjacent to the reference node, the time synchronization based on the first reception time; and recording, by each of the one or more nodes, a reception time at which the first synchronization reference packet has been received.
본 발명의 무선센서네트워크 통신방법은 상위 노드로부터 시작 동기화 시작 요청 패킷이 수신되면, 레퍼런스 노드가 제1 동기기준패킷을 브로드캐스팅하는 단계와, 상위 노드가 상기 제1 동기기준패킷을 수신한 제1 수신시각을 포함하는 응답 패킷을 상기 레퍼런스 노드로 전달하는 단계와, 레퍼런스 노드가 상기 제1 수신시각을 포함하는 제2 동기기준패킷을 브로드캐스팅하는 단계와, 레퍼런스 노드와 이웃한 적어도 하나의 노드가 상기 제1 수신시각에 기초해 시각 동기화하는 단계와, 적어도 하나의 노드가 상기 적어도 하나의 노드 각각이 상기 제1 동기기준패킷을 수신한 수신시각을 기록하는 단계로 구성된다. |
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