Wireless Network - Dec 2014

Electronics & Telecomm. (Semester 8)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks. 1 (a) Discuss two evolution paths for the GSM to offer 3G services.(5 marks) 1 (b) Discuss briefly HSDPA for WCDMA.(5 marks) 1 (c) Explain various states in Bluetooth system.(5 marks) 1 (d) Why is power control used in CDMA 2000 and WCDMA?(5 marks) 2 (a) What are the channel types that are used in the UMTS? Discuss the role of each channel type. Also discuss the responsibilities of the RNC and B in UMTS network?(10 marks) 2 (b) What are technical differences between CDMA 2000 and WCDMA?(10 marks) 3 (a) Explain the ZigBee technology? Discuss different types of network topology that are supported in ZigBee.(10 marks) 3 (b) What is WAP? Discuss WAP architecture in brief.(10 marks) 4 (a) Explain IEEE 802.11 WLAN standards. Also discuss WLAN applications.(10 marks) 4 (b) What is RFID? Discuss some of its applications.(10 marks) 5 (a) Discuss WiMax. What are the main differences between the IEEE 802.11b (Wi-Fi) and WiMax?(10 marks) 5 (b) Explain in brief forward and reverse link channels in CDMA 2000.(10 marks) 6 (a) What is i-mode? What are the major differences between WAP and i-mode?(10 marks) 6 (b) Explain Bluetooth security features and security levels with proper diagrams.(10 marks)

Write short notes on:-

7 (a) Link budget analysis.(10 marks) 7 (b) Wireless sensor network.(10 marks)