This paper considers the power efficiency and transmission range optimization of wireless
sensor nodes. A power consumption model is proposed, and the parameters are presented …

As one of data-gathering applications in information technologies, wireless sensor network
(WSN) has attracted more and more people's attention. A key challenge is achieving energy …

The radio model usually used in most of studies on wireless sensor networks is spherical.
This means that the received power at a certain distance is the same in all directions. Every …

Energy efficiency, low latency, scalability are important requirements for wireless sensor
networks. Specially, because sensor nodes are usually battery powered, and highly …

Impeded by the bottleneck of the information collection in the information chain, researchers
are more and more interested in the development of wireless sensor networks; the …

Topology is important for any type of networks because it has great impact on the
performance of the network. For wireless sensor networks (WSN), regular topologies, which …

Wireless sensor networks are more adaptive to habitat surveillance applications than other
technique due to high distribution density and self-organization of tiny sensor nodes. This …

In this paper, we primary focus on prolonging the network lifetime of Wireless Sensor
Networks (WSN), since the small, portable batteries integrated into the sensor chips can not …

In recent ten years, wireless sensor network technology has a rapid development. After a
brief introduction of the wireless sensor network, some main research results of energy …

Attempts to develop a ubiquitous health care monitoring system arisen from the need of
automatic real-time medical services for emergent diseases. Besides, the physiological …