In this study, we introduce a new media access control (MAC) protocol that adaptively changes time division multiple access (TDMA) frame size and slot duration in order to upgrade performance of underwater sensor networks. Throughput of underwater sensor networks is very low compared to a radio frequency (RF) network; the reason is a very long propagation delay and a very low bit rate. To solve these problems, we modified the TDMA protocol and introduce a new TDMA MAC protocol (aTDMA). Basically, the TDMA MAC protocol provides a time slot to each node, and the node transmits data in the allocated time slot so transmission does not collide with another node’s transmission. But if a node has no data, it wastes its slot. For the propagation delay in underwater acoustic sensor networks, the length of each slot is very long, so the waste of a slot can cause a serious reduction in performance. The proposed protocol, aTDMA, can remove the wasting of slot times and can change slot duration according to the distance between nodes. Through experiments, aTDMA shows better performance than the conventional TDMA MAC protocol.
목차
Abstract 1. Introduction 2. Related Works 3. An Adaptive TDMA MAC Protocol 4. Experiments 5. Conclusion References
키워드
UnderwaterMAC ProtocolTDMASlot TimeReservation
저자
Seung-Hyun Oh [ Computer Engineering Dept., Dongguk University Dongdaero 123, Gyeongju, South ]
보안공학연구지원센터(IJMUE) [Science & Engineering Research Support Center, Republic of Korea(IJMUE)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of Multimedia and Ubiquitous Engineering
간기
월간
pISSN
1975-0080
수록기간
2008~2016
등재여부
SCOPUS
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Multimedia and Ubiquitous Engineering Vol.11 No.4