The Journal of The Korea Institute of Intelligent Transport Systems (한국ITS학회 논문지)

The Korea Institute of Intelligent Transport Systems (한국ITS학회)
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An Event Data Delivery Scheme in GTS-based Wireless Sensor Network

GTS 기반 무선 센서 네트워크에서 이벤트 데이터 전달 방안

  • Lee, Kil-hung (Seoul National University of Science and Technology)
  • 이길흥 (서울과학기술대학교 컴퓨터공학과)
  • Received : 2015.10.19
  • Accepted : 2015.11.11
  • Published : 2015.12.31
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Abstract

This paper presents an event data delivery scheme for wireless sensor networks that use a GTS-based channel allocation scheme. Many sensor nodes can share a GTS channel for sending their normal data to the sink node. When there is an event at a node, the node makes a temporal route to the sink node and the nodes of the route can use the GTS channel in a privileged access. This scheme controls the backoff number effectively so the data delivery priority is given to the nodes of that route. Simulation results show that the event data delivery of the proposed scheme outperforms at the end-to-end transfer delay and jitter characteristics. The proposed scheme can effectively gather the event data using the guaranteed GTS channel of the route in proposed scheme.

본 논문은 무선 채널을 노드에게 할당하여 보장하는 GTS 기반의 무선 센서 네트워크에서, 고정적으로 할당하는 채널을 공유하고, 이벤트 발생 시 특정 노드가 보장 채널을 독점적으로 활용하기 위한 방안을 제시한다. 평상시에는 무선 자원이 충분하지 않은 조건에서 다수의 노드에게 특정 채널을 같이 할당하고, 할당한 채널을 노드들이 공유하면서 데이터를 전송한다. 이벤트 발생 시 특정 노드에게 채널을 독점적으로 활용하게 하게한다. 이러한 방안은 데이터 전송 시 백오프 값을 적절히 활용하고, 이벤트가 발생한 노드와, 이 노드로부터 데이터를 수집하는 루트 노드로의 경로상의 노드에게 우선권을 주는 방법으로 동작한다. 시뮬레이션을 통해 트리기반 GTS 채널을 사용하는 제안 방안이 효과적으로 백오프 값을 조절하여, 이벤트의 전달노드에게 확실한 채널을 보장하면서, 필요한 이벤트 데이터가 효과적으로 수집될 수 있음을 확인할 수 있었다.

Keywords

References

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