By Nandini Mukherjee, Sarmistha Neogy, Sarbani Roy
Building instant Sensor Networks: Theoretical and useful Perspectives provides the cutting-edge of instant sensor networks (WSNs) from basic strategies to state of the art technologies.
Focusing on WSN subject matters excellent for undergraduate and postgraduate curricula, this book:
- Provides crucial wisdom of the modern concept and perform of instant sensor networking
- Describes WSN architectures, protocols, and working systems
- Details the routing and information aggregation algorithms
- Addresses WSN defense and effort efficiency
- Includes pattern courses for experimentation
The booklet bargains overarching insurance of this interesting box, filling a serious hole within the present literature.
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Additional resources for Building wireless sensor networks : theoretical and practical perspectives
In sleep state, the transmitter is turned off or the receiver is turned off or both are turned off. Although, energy consumption can be reduced by keeping receivers in sleep mode when they are not in use, the recovery time and startup energy to transfer from sleep state to wakeup state can be significant. The other issue is when to wake a receiver. Some of the MAC layer protocols to handle these issues are disucssed in Chapter 4. 3 Sensor Network Architecture In a wireless sensor network, spatially distributed tiny devices are deployed to monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or pollutants.
The coordinator also decides maximum number of routers, number of end devices that each router may have as children and maximum depth of the tree in case of tree topology. Network Layer Services Two types of services are provided at the network (NWK) layer. One is the NWK data service and the other is NWK management service. 8 shows a general frame structure, the frame control fields, and structures of the command frame and the data frame. The NWK management service provides primitives for a device (i) to discover the currently operating networks within its range, (ii) to join or rejoin a network, or to change the operating channel while remaining within an operating network, (iii) to synchronize or extract data from its ZigBee coordinator or router and (iv) to leave the network upon receiving a request from a higher layer.
We will see in the subsequent chapters that WSNs are data-centric and in-network processing is a major requirement. In a WSN, accomplishing a task is important, not which node is performing the task. On the other hand, like traditional networks, MANETs are id-centric and each node in a MANET is addressed with an identifier and each node is given a specific task to accomplish. 6 Requirements of a WSN Traditional networks transmit bits or signals through the network. In contrast with traditional networks, wireless sensor networks are more application- © 2016 by Taylor & Francis Group, LLC 12 Building Wireless Sensor Networks specific.