GTU Computer Engineering (Semester 7)
Mobile Communication And Wireless Communication
June 2014
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) Explain three tier architecture of conventional mobile computing.
7 M
1 (b) Draw the Bluetooth protocol stack and explain the host controller interface.
7 M

2 (a) Explain call routing in GSM with block diagram.
7 M
2 (b) What is a mobile IP? Explain discovery, registration and tunneling with mobile IP.
7 M
2 (c) What is cellular IP? Establish its relationship with mobile IP.
7 M

3 (a) List and explain the strengths of SMS.
7 M
3 (b) Draw and explain GPRS architecture.
7 M
3 (c) Explain routing between PLMNs for GPRS system.
7 M
3 (d) What is WAE? Draw its model with client, gateway and server.
7 M

4 (a) Discuss the WAP gateway for coding and encoding.
7 M
4 (b) What is spread spectrum technology? Compare it with narrow band.
7 M
4 (c) How authentication is possible in wireless LAN? List and discuss the possible attacks on such networks.
7 M
4 (d) Define Mobile Ad hoc Networks. Discuss its characteristics and limitations.
7 M

Attempt any four:
5 (a) RFID.
4 M
5 (b) BSS.
4 M
5 (c) Handover in GSM.
4 M
5 (d) Application and tunnelling modes in GPRS.
4 M
5 (e) WiFi v/s WiMax.
4 M
5 (f) Role of Mobile Computing OS.
4 M



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