Reliable and on-time data delivery is a crucial parameter of network performance in highly dynamic mobile ad hoc networks. Leveraging on a modified 802.11 MAC tweak, guard nodes relay the packet with prioritized back off time when the intended node fails and becomes a contender nodes themselves. Previously used ad hoc routing protocols of MANETS are susceptible to node mobility, especially for ...

This paper investigates the power mode management problem for an IEEE 802.11-based mobile ad hoc network (MANET) that allows mobile hosts to tune to the power-saving (PS) mode. There are two major issues that need to be addressed in this problem: (a) wakeup prediction and (b) neighbor discovery. The former is to deliver buffered packets to a PS host at the right time when its radio is turned on...

Wireless Sensor Networks research and demand are now in full expansion, since people came to understand these are the key to a large number of issues in industry, commerce, home automation, healthcare, agriculture and environment, monitoring, public safety etc. One of the most challenging research problems in sensor networks research is power awareness and power-saving techniques. In this maste...

Power saving is an important factor in Mobile Ad hoc Networks, because most of the equipment in MANETs are battery powered. So we have to reduce the power consumption of each and every node. There are several methods to reduce the power consumption of nodes. An effective method is sending the packets with optimum power. In this paper, we propose an energy efficient power aware routing (EPAR) pr...

There are two types of MAC layer power-saving (PS) protocols for IEEE 802.11-based MANETs: synchronous and asynchronous ones. In this paper, we propose a hybrid PS protocol to take advantages of both types of protocols. The protocol utilizes the concept of dual-channel and dual-transmission-range clustering. It divides all the hosts into clusters. Each cluster has a head and all the heads are o...

Bluetooth is expected to be an important basic constructing component of smart homes. In a smart home environment, many devices will be portable and battery-operated, making power saving an essential issue. In this article we study the problem of managing the low-power sniff mode in Bluetooth, where a slave is allowed to be awake only periodically. One challenging problem is how to schedule eac...

Radio transmission may be a good alternative to the wire based communication for a lot of applications in building automation (Rauchhaupt and Hähniche, 1999). The advantage is an easy, fast and low cost installation scenario. Nevertheless, the radio specifics require a very specialized protocol stack that affects the whole system architecture. Starting from the requirements of building automati...

In wireless sensor network routing protocol design and energy savings optimization is important because most of times nodes are in moving condition and deployed in remote area. This work focuses on minimizing energy consumption and maximizing network lifetime for data relay in one-dimensional queue network. An Energy Saving via Opportunistic Routing (ENS_OR) algorithm is designed to ensure mini...

One of the most challenging problems in wireless sensor networks (WSNs) research is energy management. We propose two concepts aiming at saving power in low duty cycle applications. We first suggest a methodology for using hardware timers effectively. Then, we provide a way to calculate microcontroller (μC) configurations with various clock frequency setpoints, while respecting several types of...

1Multimedia applications over wireless networks become more and more demanding with respect to Quality of Service (QoS) and power consumption. As network behavior is a very important factor affecting the overall system performance, the protocol stack needs to be studied regarding Quality of Service (QoS) management. Power saving is another feature that network functionality must provide as mobi...