MU Information Technology (Semester 7)
Wireless Technology
December 2016
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) Assume a cellular system of 32 cells with a cell radius of 1.6 km, a total spectrum allocation that supports 336 traffic channels, and a reuse pattern of 7. calculate the total service area covered with the number of channels per cells, and a total system capacity. Assume regular hexagonal topology.
10 M
1(b) Explain the main factors of change in economics of wireless technology.
10 M

2(a) Define piconet and scatternet. Expalin Bluetooth protocol stack structure.
10 M
2(b) Explain WIMAX system and compare the different 802.16 standards.
10 M

3(a) Explain GPRS architecutre and explain how authentication and encryption is provided in GSM.
10 M
3(b) Explain 802.11 MAC management functions. Expain in detail Power Management function with a neat diagram.
10 M

4(a) Write short note on wireless sensor networks.
5 M
4(b) Expain Hidden and exposed terminal problem with solution.
5 M
4(c) Why is the concept of Spread Spectrum important? Briefly explain FHSS and DSSS concept.
10 M

5(a) With a neat diagram explain Electromagnetic Spectrum. List the advantages and disadvantages of wireless technology.
10 M
5(b) Neatly explain the WLL Architecture. Explain the two local loop techniques with diagram.
10 M

Write a short note any two Q6.(a,b,c,d)
6(a) VPN
10 M
6(b) Multiple Access Techniques
10 M
6(c) Handoff Strategies
10 M
6(d) Mobile IP
10 M



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