Wireless Sensor Network (WSN) is a hot research area due to its use in many military and civilian applications. WSN consists of distributed small, low power and limited capabilities sensors that are scattered in the network field to sense different parameters in the environment. The sensed data will be sent to a more powerful node called sink node (Base Station). The sink node is usually connec...

Recent advances in technology have made low cost, low power wireless sensors a reality. Clock synchronization is an important service in any distributed system, including sensor network systems. Applications of clock synchronization in sensor networks include data integration in sensors, sensor reading fusion, TDMA medium access scheduling, and power mode energy saving. However, for a number of...

MANETs are infrastructure less and can be set up anytime anywhere. One of the main design constraints in mobile Ad Hoc networks (MANETs) is that they are power constrained. Hence, every effort is to be channeled towards reducing power. More precisely, network lifetime is a key design metric in MANETs. In this kind of network the mobility rate of nodes is high, so excessive use of energy and als...

The usually constrained resources and lossy links scenarios of Internet Things (IoT) applications require specific protocol suite, as the IPv6 Routing Protocol for Low-Power Lossy Networks (RPL). Due to its flexibility, RPL can support efficiently vertical such environmental monitoring, smart city Industry 4.0. In this paper, we propose a new Objective Function (OF) based on composite metric co...

Energy-saving is vital in a mobile network as mobile terminals are energy contingent and is one of the most important features that extends the lifetime of portable devices. Mobile WiMAX (IEEE 802.16e) addresses the issues related to energy conservation at a Mobile Subscriber Station (MSS). In this paper, a power saving mechanism involving sleep mode operation is proposed for IEEE 802.16e netwo...