NACA: A new adaptive CSMA/CA algorithm of IEEE 802.15.4 in beacon-enabled networks

被引：1
|
作者：
Song, Junkeun [1 ,2 ]
Shin, Kee-Young [1 ,2 ]
Yu, Misun [2 ]
Kim, JinWon [2 ]
Mah, PyeongSoo [1 ,2 ]
机构：
[1] Korea Univ Sci & Technol, Dept Comp Software & Engn, Taejon, South Korea
[2] Electron & Telecommun Res Inst ETRI, Embeded Software Res Div, Ubiquitous Comp Middleware Res Team, Daejeon, South Korea
来源：
9TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY: TOWARD NETWORK INNOVATION BEYOND EVOLUTION, VOLS 1-3 | 2007年
关键词：
NACA; IEEE; 802.15.4; LR-WPAN; back-off algorithm; CSMA/CA;
D O I：
10.1109/ICACT.2007.358352
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
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.
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页码：266 / +
页数：2
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