Get familiar with the hardware components of wireless sensor nodes
Get familiar with WSN energy consumption and management
Get familiar with WSN operating systems and execution environments
Read chapter 2 and provide answers to the following questions:
1) Identify and explain the 5 major components of a basic wireless sensor node.
2) Explain the role of the transceiver in the sensor node. Based on your own judgment, what are the five most important characteristics that should be taken into account when selecting a transceiver? Explain your answers.
3) What are the role of the Power Amplifier (PA) and Low Noise Amplifier (LNA)?
4) List and explain the 4 operational states of typical transceivers. Would it be appropriate to have sensor nodes with transceivers not capable of entering the sleep state? Explain.
5) Explain in detail the concept of Dynamic Voltage Scaling (DVS).
6)Why is a sequential programming model insufficient for wireless sensor nodes?
7) What are two programming models for achieving concurrency in wireless sensor nodes? Explain the pros and cons of each and provide reasons supporting why one would be better than the other.
8) Typical communication software is architected using a layered approach (e.g., TCP/IP). Why would departing from the typical layered approach make sense in WSN?
9) What is a component model/architecture for communication software? How does it differ from the layered approach? Give an example of a component-based operating system for WSN
#Homework Task: Read chapter 3 and answer the following questions.#
1) In the WSN context, define, compare, and contrasts the terms " sources and sinks." In addition, provide a paragraph explaining how the mobility of sources and sinks would affect (negatively or positively) the wireless sensor network.
2) Explain the concept of QoS in WSN. For the following scenario, specify what QoS attributes would be applicable and explain why (Note: more than one QoS attribute can apply. Use your judgment).
Scenario: Ground vibrations made from moving tanks can be distinguished from other vehicles, such as cars, motorcycles, etc. A military WSN has been deployed to sense ground vibrations and transmit only when a tank is passing by. Once detected, the WSN should monitor the position of the tank as it moves around the WSN coverage area.
3) Explain the concepts of single-hop and multihop. Why is multi-hop required from most WSN applications? Does multi-hop improve energy efficiency in WSN communications? Explain your answer.
4) Energy efficiency in WSN can be evaluated in many different ways. Specify and explain the term " energy efficiency" when it comes to network lifetime, time to loss of coverage, and time to failure of the first event notification. Which of these would be more important for WSN?
5) Scalability and Robustness are also common " figures of merit" that can be used to evaluate, compare, and optimize WSN? Explain the terms Scalability and Robustness in WSN. Specify and explain one design principle used to achieve both scalability and robustness.
6) In-Network Processing is a design principle that can be used to achieve QoS, Energy Efficiency, Scalability, etc. Specify and explain 4 in-network processing techniques. From the 4 techniques, select one and explain how it can be used to support both QoS and Energy Efficiency.
7) What is data-centric networking?
8) Explain the gateway concept for WSN? Provide and explain three scenarios where gateways can be used in WSN.
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