Mobile & Satellite Communications
Midsem Exams April 2022
Instructions: Answer all questions
Question 1
When a user equipment (UE) moves from an area served exclusively by a single NodeB station
to an area where the cells of several NodeB stations overlap, how is it determined which NodeB
station will control the UE? Explain in detail the handoff process involved in the process.
Question 2
a) Draw the network architecture for the following networks.
i. 2.5G network
ii. 3GPP release 1999
iii. 3GPP release 4
iv. 3GPP release 5
v. 3GPP release 8 (LTE)
b) List and explain the new enhancements that were added to the network from the 3GPP’s
Release 1999 to Release 14
Question 3
Discuss the environmental factors that influence signal propagation of mobile communication
systems and measures to mitigate against such factors.