상세정보
학술대회
NACA: A New Adaptive CSMA/CA Algorithm of IEEE 802.15.4 in Beacon-enabled Networks
- 발행일
- 200702
- 출처
- International Conference on Advanced Communication Technology (ICACT) 2007, pp.266-269
- 협약과제
- 06MW1100, 임베디드 SW 기반 Smar Town 솔루션 기술 개발, 마평수
- 초록
- In this paper, we propose a new adaptive CSMA/CA algorithm (NACA) that aims to reduce redundant transmission of IEEE 802.15.4 LR-WPAN. In Wireless Sensor Networks (WSN), energy consumption is one of the most important issues. Furthermore, it makes the network life-time longer by reducing retransmission. To achieve this goal, we improve the carrier sensing features in MAC layer of IEEE 802.15.4. When the network is busy, the MAC detects it and adaptively chooses the parameters of CSMA/CA mechanism to minimize collisions and redundancy of retransmission packet based on the NACA. We evaluated the proposed scheme with original 802.15.4 MAC on the ns-2 simulator. The results show that our scheme outperforms the original about 15% in case of retransmission.
- KSP 제안 키워드
- Adaptive CSMA, CA algorithm, Carrier Sensing, IEEE 802.15.4, LR-WPAN, Mac layer, Network LifeTime, Network simulator-2(NS2), Static wireless sensor networks(WSNs), energy consumption, ns-2 simulator