earticle

영어

Advances in MEMS (Micro Electro Mechanical Systems), microprocessor, and wireless technologies, have accelerated deployment of network-capable computing devices attached to various objects over the world. These devices should be small in size and have a characteristic of extremely low power consumption. Therefore, in 2004, IEEE 802.15.4 has been established as a global standard for LR-WPANs. After that, the phenomenal popularity of this standard has also led to indiscreet deployment of other WPANs. Therefore, LR-WPANs can suffer from collision by other WPAN devices. In order to solve collision problem in IEEE 802.15.4, in this paper we introduce a novel channel scheduling scheme which is an adaptive method with fast recovery. The proposed scheme can minimize the possibility of beacon collisions by efficiently managing the multiple available channels in a hybrid manner combining proactive and reactive methods.