Intermittent Wireless Communication System for Low-Power Sensor Networks

Abstract

An intermittent wireless communication system has been developed for low-power sensor networks that improves sensor network efficiency by promoting cooperative optimization among the hardware architecture, communication protocol, and multiple access scheme. The intermittent communication protocol together with hardware for intermittent function contributed to reduce power consumption and extended sensornode battery lifetime. A multiple access scheme based on the R-ALOHA protocol is used for the wireless link; it works efficiently with the protocol and hardware. Due to its inter-layer optimization, the system has low power consumption regardless of the traffic load and is thus flexible enough to support a wide range of sensor network applications.

Optimization of power‐efficient wireless mesh networks in outdoor and indoor environments in Japan

“…Recently, the importance of a resilient network with low power consumption has been investigated in terms of sensor network. Because the opportunity to install sensors in areas without commercial power is increasing, research on lowering the power consumption is an active area . In addition, the propagation loss varies with multipath fading, which is caused by changes in the environment.…”

Determination of Adjacent Nodes for Power‐Efficient Wireless Sensor Networks

“…The requirements for sensing networks include low power consumption and tolerance of changes of communication environment. Low power consumption is needed because sensors may be installed where no power supply is available, and there has been much research on this subject . In addition, in wireless communications the conditions of the direct waves and multiple reflected waves vary with the surrounding environment, and propagation losses fluctuate in magnitude; therefore, it is not possible to ignore variation of the communication loss probability, and thus of the communication status.…”

A power‐efficient access method by polling for wireless mesh networks

“…The requirements for such sensor networks include low power consumption and robustness to changing communication conditions. Low power consumption is needed because sensors are likely to be installed where no power source is available; there have been many studies of power saving 2, 3. In addition, wireless communications are affected by environmental changes; in particular, the propagation loss varies with the conditions of direct and reflected waves, which means that one cannot ignore variation of the communication loss probability.…”