USNI P E

PESIT Bangalore South CampusHosur road, lkm before Electronic City, Bengaluru -100

Department of Electronics and Communication

INTERNAL ASSESSMENT TEST 1

Date : 26-02-2018 Marks:50

Subject & Code : Wireless Communications ( l0EC8l ) Sec :8A/8B/8C

Name of faculty : K Ramamurthy and Ananda M Time : 8.30 a.m - 10.00 a.m

Note: Answer FIVE full questions Marks

Q.No1 a) With suitable diagrams explain the multiple access schemes used in 2G,3G

and 4G systems.b) Define the following terms with respect to cellular telephone network.

i) Control channel. ii) Hand off. iii) Mobile switching center.

5+5

2 Describe the evolulion of mobile radio networks from 1G to 2G and then 3G.

Explain the important features in 3G cellular networks.7+3

3 Draw the block diagram ofBSS. Explain the functions ofRBS and BSC 2+4+4

4 With neat block diagram explain the MSC subsystem. Explain the TRC function' 8+2

5 a) Describe the major differences between CDMA RBS and TDMA RBS

b) Write short notes on the following cellular components

i) HLR. iD MSC/VLR,

5+5

6 a) Explain how the mobile station identifies the ce[[ and decode the system

information when it is powered on.

b) Explain various scenarios of mobile originating call up to Traffic channel

allocation.7 Explain the various scenarios in rnobile terminating call indicating the global

title translation functions in each signaling point.

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P.E.S. Istitute of Technolo_gy( Bangalore South Campus)Hosur Road, ( lKm Before Electroric Cityj, Bangalore 560100.

Department of Electronics and CommunicationSCHEME AND SOLUTION

INTERNAL TESTSemester3

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