Problem:
(a) Describe how a Mobile Terminating call, from a PSTN phone, is processed in a GSM network. Illustrate your answer with a diagram.
(b) What is a GPRS Support node? What are the different types of support nodes available in a GPRS network?
(c) What is the HO_Margin and how does it optimise handovers in cellular networks?
(d) Explain the different type of handovers available in UMTS and state which ones are soft or hard handovers. Illustrate your answer with a diagram.