Plenary lecture II: challenges for wireless sensor networks deployment
Zoran S. Bojkovic, Bojan M. Bakmaz · 2008
In the recent years extensive research has opened challenging issues for wireless sensor networks (WSNs) deployment. Many of ad hoc networks are sensor networks designed to collect data and revert to a centre unit connected to the Internet or monitored. WSNs are formed by a large number of resource-constrained and inexpensive nodes, which has an impact on protocol design and network scalability. Sensor networks have enabled a range of applications where the objective is to observe an environment and collect information about the observed phenomena or events. This has lead to the emergence of a new generation sensor networks called sensor actuator networks. Sensors gather information about the physical world, while actuators make decisions and perform actions that affect the environment. To enable next-generation sensor actuator systems, new customizable architectures are needed. The collected information and sensor nodes must be localized in space to identify the location of an event. This positioning is accomplished using localization systems. They not only locate events, but can also be used as the base for routing, density control, tracing and a number of other protocols. Due to their key role in WSNs, localization systems can be a target of an attack. In order to be fully autonomous and self-capable, it is essential for the nodes to be aware of their environment, and will not be able to configure itself to respond to internal/external events. The first part of this lecture deals with sensor actuator networks and localization systems. We continue with self configurability, situation awareness, and information detection system. The next part treats the problem of wireless sensor network for distributed detection. Model proposal for wireless sensor network concludes the presentation.