Two important criteria of wireless body area networks (WBANs) are low power consumption and delay. These can be met by designing efficient medium access control (MAC) protocols. In this paper, two TDMA-based MAC protocols proposed. The first protocol, TM–MAC makes use only a main radio. second proposed TWM–MAC WUR alongside the compared with different categories standard it is shown that they o...

Energy efficiency is one of the most important attributes in sensor network protocols. In sensor nodes, communication related activities consume the major share of battery energy. Therefore, judicious choice of transmit power and frame size are very important to maximize the energy efficiency and hence the lifetime of nodes. While there have been a few recent studies on transmit power control i...

this paper describes a study that starts with an analysis of typical energy demand profiles in a hospital setting followed by a case study of a combined cooling, heating, and power (cchp) generation system.cchp is an autonomous system that combines the generation of electrical, heating, and cooling energy.the driving units are two high-efficiency gas engines that produce electrical and heat ene...

To enhance the power efficiency of broadband wireless access devices based on battery power, an adaptive power saving strategies based on cross-layer design is proposed for IEEE 802.16e sleep-mode operation. In this paper, we evaluate performance of the power-saving mechanism based on sleep mode in IEEE 802.16e mobile Worldwide Interoperability for Microwave Access (WiMAX) system, which is base...

In the IEEE 802.16e system, we propose an efficient power saving mechanism that increases the unavailability interval when the mobile station (MS) uses multiple power saving classes(PSCs). Through the simulation results, we show that the proposed mechanism reduces the power consumption of MSs considerably compared with conventional mechanism.

Minimizing the energy consumption of wireless network interfaces is crucial in the design of battery-powered mobile computing devices. The IEEE 802.11 wireless LAN specification describes a power-saving mode which allows the network interface on the mobile device to enter a sleep mode when the link is idle; periodically, the mobile device must wake up to listen to beacons from the access point ...