Wireless Network (WN) Paper Solution
University: Mumbai University
Branch: Electronics and Telecommunication Engineering
Q1. 05 Marks Each
A. List out Quality of service [QOS] attributes in UMTS.
B. Explain ‘Hidden Node’ and ‘exposed node’ problems in wireless LANs.
C. How is power control implemented in CDMA?
D. Draw and explain with a neat diagram, the components of Senser nodes.
Q2. 10 Marks Each
A. Calculate the downlink cell load factor and numbers of voice users per cell for a WCDMA system using the following data. What is the pole capacity of the cell?
1) Information Rate (Ri) = 12.2kbps
2) Chip rate (Rc) = 3.84 Mcps
4) Average interference factors due to other cells = 0.5
5) Orthogonality factor =0.65
6) Interference margin=3db.
B. What is Localization in wireless sensor networks? Explain with examples centralized and distributed schemes in Localization algorithms.
Q3. 10 Marks Each
A. Give a detailed radio Access Network overview. Explain in detail the functions of Node B and RNC and also draw UTRAN logical architecture.
B. Explain the ZigBee technology. Discuss different Network Topologies that are supported in Zigbee.
Q4. 10 Marks Each
A. Explain Link budget analysis of requirements of wireless networks.
B. Explain Various Bluetooth connection establishment states. Draw a complete flow Diagram.
Q5. 10 Marks Each
A. Give technical requirements of IEEE 802.15.3a Physical layer w.r.t. data rates, power consumption, power management modes, scalability and interference, etc.
B. Why Network management design issue is critical issue in wireless sensor network? Give Reason.
Q6. 10 Marks for Both
A. Write short notes on Wimax
B. Write short notes on Rake Receivers