wireless sensor networks are composed of hundreds or thousands of small nodes called sensor that work together and are associated with a specific task or tasks to do. each of these nodes includes sensor, processor, communication components, a small memory and a source of energy. it is expected that wireless sensor networks will be used widely in many applications in near future. scalability and...

Wireless sensor networks(WSN) have unique properties that distinguished them from other wireless networks and have special challenges. Not-chargeable, not-changeable and limited power supplies of sensor nodes is the most important challenge of this networks, and if the power supply of node expired, a part of data maybe lost. Because of the importance of covers in wireless sensors, in this work ...

As demand for wireless access to the Internet and Internet-based services is expanding, competitive advantages in the mobile business can be gained by offering enhanced user experience through costeffective broadband mobile access. A promising approach is to maximize total performance of networks, i.e., provide not only wireless access with higher performance but also more efficient operation a...

With the tremendous growth of wireless networks into the next generation to provide better services, Wireless Mesh Networks (WMNs) have emerged to offer ubiquitous communication and seamless broadband applications. WMNs are hybrid networks composed of a mixture of static Wireless Mesh Routers (WMRs) and mobile Wireless Mesh Clients (WMCs) interconnected via wireless links to form a multi-hop wi...

Wireless sensor networks are a network of small sensing devices which collaborate with each other to gather, process and communicate over wireless channel information about some physical phenomena. These self-organising, highly robust and energy efficient networks can be excellent sentinels for monitoring underground mining, wildlife and various physical infrastructures such as bridges, pipelin...

An ad-hoc wireless sensor network is also called self-organized networking that wireless sensor nodes can automatically communicate for each other. Therefore, each sensor node is no need for the information such as location of each sensor. Similarly, it consumes much energy on the information exchanged of each sensor node in order to maintain the entire ad-hoc wireless sensor network alive. The...

Energy-efficient Self-monitoring of Wireless Sensor Network (Azad Ali) ................... 2 Is Reliability a Concern for Mobile WSNs (Faisal Karim) ............................................ 2 Attributes and Metrics defining Quality of Information in Wireless Sensor Networks (Vinay Sachidananda).....................................................................................................