Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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A Low-Delay MAC(LD-MAC) protocol in Multi-Hop Wireless Sensor Networks

멀티 홉 무선 센서 네트워크에서 저 지연을 지원하는 MAC 프로토콜

  • Received : 2013.11.21
  • Accepted : 2014.02.05
  • Published : 2014.02.28
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Abstract

In Wireless Sensor Networks the Medium access control (MAC) protocol has many challenges to solve such as reducing energy consumption, supporting QoS(quality of service) fairness, and reducing delivery delay. This paper proposed a low-delay supporting MAC protocol in multi-hop Wireless Sensor Networks. The proposed protocol uses the RB(rapid beacon) frame for reducing delivery delay. The RB frame is a modified IEEE 802.15.4 beacon frame. For sender adaptive-wakeup, the RB frame includes a seed number for determining of a receiver wakeup time. And for next hop receiver adaptive-wakeup, the RB frame includes the length of remaining data packet information. Results showed that our LD-MAC protocol outperformed other protocol in terms of data packet delivery delay.

무선 센서 네트워크에서 MAC 프로토콜은 에너지 소모의 감소, QoS 지원, 공평성 지원, 그리고 전송 지연의 감소 등과 같은 많은 해결해야 할 문제들을 가진다. 본 논문에서는 멀티 홉 무선 센서 네트워크에서 저 지연을 지원하는 MAC 프로토콜을 제안한다. 본 논문에서 제안하고 있는 LD-MAC 프로토콜은 전송 지연을 줄이기 위해 RB(rapid beacon) 프레임을 사용한다. RB 프레임은 IEEE 802.15.4의 비콘 프레임의 수정된 형태이다. 송신 노드의 적응적 wakeup을 위해 RB 프레임에는 수신 노드의 wakeup과 관계된 seed 수를 포함한다. 또한 다음 홉 수신 노드의 적응적 wakeup을 위해 RB 프레임에는 남은 데이터 패킷 길이 정보를 포함한다. LD-MAC 프로토콜은 기존에 제안된 다른 프로토콜에 비해 데이터 패킷 전송 지연에서 더 좋은 성능을 보였다.

Keywords

References

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