MU Computer Engineering (Semester 6)
Mobile Communication & Computing
May 2015
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) Draw and Explain Electromagnetic Spectrum for communication.
5 M
1 (b) Explain Hidden station and exposed station problems in WLAN.
5 M
1 (c) Explain various types of handoffs in GSM network.
5 M
1 (d) Explain GSM Frame Hierarchy.
5 M

2 (a) Explain synchronization in 802.11 MAC management layer for both infrastructure as well Adhoc WLANs.
10 M
2 (b) Explain GPRS architecture in detail. Compare it with GSM architecture.
10 M

3 (a) Compare HIPERLAN-1, HIPERLAN-2 and 802.11 W-LAN.
10 M
3 (b) Explain the functioning of I-TCP and SNOOP-TCP, giving advantages and disadvantages of both.
10 M

4 (a) Why is Mobile IP packet required to be forwarded through a tunnel. Explain minimal techniques of encapsulation of Mobile IP packet.
10 M
4 (b) Explain functioning of Bluetooth Baseband layer.
10 M

5 (a) Explain UMTS architecture. Explain UTRA-FDD and TDD modes.
10 M
5 (b) Explain how Mobile Terminated Call works detailing the role of HLR and VLR.
10 M

Short Notes on any 2
6 (a) Wireless Local Loop.
10 M
6 (b) Privacy and Authentication in GSM.
10 M
6 (c) Android framework.
10 M



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