NACA: A New Adaptive CSMA/CA Algorithm of IEEE 802.15.4 in Beacon-enabled Networks

Author

Song, JunKeun ; Shin, Kee-Young ; Yu, Misun ; Kim, JinWon ; Mah, Pyeongsoo

Author_Institution

Dept. of Comput. Software & Eng., Korea Sci. & Technol. Univ., Daejeon

Volume

1

fYear

2007

fDate

12-14 Feb. 2007

Firstpage

266

Lastpage

269

Abstract

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 by about 15% in case of retransmission.

Keywords

carrier sense multiple access; personal area networks; wireless sensor networks; IEEE 802.15.4; LR-WPAN; MAC layer; NACA; WSN; adaptive CSMA-CA algorithm; beacon-enabled networks; wireless sensor networks; Computer networks; Embedded computing; Embedded software; Energy consumption; Multiaccess communication; Road accidents; Software algorithms; Telecommunication computing; Telecommunication traffic; Wireless sensor networks; CSMA/CA; IEEE 802.15.4 LR-WPAN; NACA; back-off algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Communication Technology, The 9th International Conference on

Conference_Location

Gangwon-Do

ISSN

1738-9445

Print_ISBN

978-89-5519-131-8

Type

conf

DOI

10.1109/ICACT.2007.358352

Filename

4195131