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

Wireless Networks - December 2016

SPPU Electronics and Telecom Engineering (Semester 8)

Total marks: --
Total time: --
(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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