The Journal of the Convergence on Culture Technology (문화기술의 융합)

The International Promotion Agency of Culture Technology (국제문화기술진흥원)
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Data Transmission Performance Study of Wireless Channels over CCN-based VANETs

CCN 기반의 VANET에서 무선 채널에 따른 전송 성능에 관한 연구

  • Kang, Seung-Seok (Dept. of Digital Media Design and Applications, Seoul Women's University)
  • 강승석 (서울여자대학교 디지털미디어학과)
  • Received : 2022.05.26
  • Accepted : 2022.07.02
  • Published : 2022.07.31
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Abstract

VANET (Vehicular Ad hoc NETwork) is one of the special cases of the ad hoc networks in which car nodes communicate with each other and/or with RSUs (Road Side Unit) in order for the drivers to receive nearby road traffic information as well as for the passengers to retrieve nearby gas price or hotel information. In case of constructing VANET over CCN, users do not need to specify a destination server address rather to input a key word such as nearby congestion in order to gather surrounding traffic congestion information. Furthermore, each car node caches its retrieved data for forwarding other nodes when requested. In addition, the data transmission is inherently multicast, which implies fast data propagation to the participating car nodes. This paper measures and evaluates the data transmission performance of the VCCN (VANET over CCN) in which nodes are equipped with diverse wireless communication channels. The simulation result indicates that 802.11a shows the best performance of the data transmission against other wireless channels. Moreover, it indicates that VCCN improves overall data transmission and provides benefit to the nodes that request the same traffic information by exploiting inherent multicast communication.

VANET은 애드 혹 네트워크의 한 종류로 네트워크 인프라 없이 도로를 운행하는 자동차 노드들 사이에서 혹은 자동차들과 RSU 사이에서 운전자에게 주변의 교통 정보를 제공하고 탑승자에게 다양한 부가 정보를 제공하기 위해 생성되는 네트워크이다. VANET을 구성할 때 CCN을 기반으로 하는 경우 사용자는 필요한 자료를 저장하는 서버 주소를 지정하지 않고 키워드 등으로 주변 교통 콘텐츠를 조회할 수 있고 네트워크에 참여하는 주변 노드들의 캐시 정보를 즉시 사용할 수 있으며 멀티캐스트 전송으로 다른 노드들과 쉽게 정보를 공유할 수 있다. 본 논문은 VCCN에 참여하는 노드들이 다양한 무선 채널을 사용하는 경우 각 무선 채널에 대해 데이터 전송 성능을 측정하고 평가하였다. 모의실험 결과 802.11a 무선 채널이 다른 채널에 비해 전반적으로 전송 성능이 우수하였다. 또한 채널의 데이터 전송 용량이 허용하는 범위 내에서 CCN의 멀티캐스트 통신 속성에 의해 동시에 여러 노드가 데이터를 수신하는 경우 물리적으로 제공하는 네트워크 대역폭 이상으로 데이터를 전송할 수 있다.

Keywords

Acknowledgement

이 논문은 2022학년도 서울여자대학교 연구년수혜 및 학술연구비의 지원에 의한 것임(2022-0235)

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