Wireless Sensor Network

3043 Words13 Pages
1. INTRODUCTION 1 1.1 Wireless sensors Deployment 2 1.2 Wireless Sensor and Actor Networks 3 1.3 The Physical Architecture of WSANs 3 1.4 Difference between WSNS and WS 4 1.5 Requirement of WSNs 5
2. Wireless Ad-Hoc Network 5
3. Current Issues and solution 6 3.1 Key management issue for future 9
4. Advantages, Disadvantages and Applications of WSNs 10
5. Conclusion 11
6. References 12
List of figures
Figure 1 Working principle of WSNs 1
Figure 1.3 The Physical Architecture of WSANs 4
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For achieving this goal, physical deployment of the nodes and the sample periods are pre-determined by the scientists. To ensure that data is delivered as expected is the real role of the network. For achieving this goal it is necessary to reduce the network complexity as much as possible from the services and its application. It is possible to optimize communication performance for that application-not for a generic set of users as each node executes a single application. For achieving this it is necessary to translate them into a set of goals for media access protocol to satisfy the requirement of wireless sensor network deployment and monitoring application. For WSNs application, the common goals for a MAC protocol are:
1) Collision Avoidance in effective manner
2) High Data Rate and Efficient Channel Utilization
3) Network protocol should be Reconfigurable
4) Low Power Operation
5) Large number of nodes should be scalable
6) RAM size, Small Code, and Simple Implementation
7) Tolerant to changing RF/Networking conditions.
The B-MAC is proposed to meet these goals, a configurable MAC protocol for WSNs. It is simple in both for implementation and design. MAC protocol support a wide variety of sensor network workloads by factoring out some functionality and exposing control to higher services. In contrast to the classic monolithic MAC protocol this minimalist model of MAC protocol is designed [1].

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