Question Paper: Wireless Networks Question Paper - December 2016 - Electronics and Telecom Engineering (Semester 8) - Savitribai Phule Pune University (SPPU)
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Wireless Networks - December 2016

SPPU Electronics and Telecom Engineering (Semester 8)

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

Solve any one question from Q.1(a,b,c) & Q.2(a,b,c)

1(a) What is OFDM? Discuss advantages and disadvantages of OFDM for wireless networks. 7 marks

1(b) Explain in detail different protocols for WiFi. 7 marks

1(c) With the help of suitable diagram explain in detail 3GPP release 4 network architecture. 7 marks

2(a) List in tabular form mobile data supported by 2G and 3G technologies 7 marks

2(b) Describe with neat diagram basic components of WLAN with their characteristics. 7 marks

2(c) Explain speech and data services supported by UMTS. 7 marks

Solve any one question from Q.3(a,b) & Q.4(a,b)

3(a) Describe downlink and uplink LTE channels. 7 marks

3(b) What is Handover? With suitable diagram explain X2 Handover mechanism. 7 marks

4(a) Explain the function of LTE scheduler. 7 marks

4(b) Write notes on:
i) Self Organizing Networks(SONs)
ii) Hetrogenous Networks(HetNET)
7 marks

Solve any one question from Q.5(a,b) & Q.6(a,b)

5(a) Give the functions of ASN, ASN-GW, CSN and different interfaces used in WiMAX. 7 marks

5(b) Explain 802.16m FDD and TDD frame formats. 7 marks

6(a) What is meant by Interface mitigation? With suitable diagram explain frequency planning with fractional frequency Reuse(FFR). 7 marks

6(b) Explain Mesh network for Wimax technology. 7 marks

Solve any one question from Q.7(a,b) & Q.8(a,b)

7(a) Explain the challenges of VoIP? Explain protocol layers. 7 marks

7(b) Explain the process of SIP call establishment and release. 7 marks

8(a) With neat diagram describe H.323 network architecture. 7 marks

8(b) Write short note on SS7 protocol stack. 7 marks

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