Question 6 A cellular network or mobile network is a type of wireless connection facilitated by cellular towers. (a) Briefly describe congestion in cellular system and suggest two (2) methods to overcome the issue of congestion from the network designer point of view. Discuss your suggestions. (8 marks) (b) While you are talking over the phone in your journey home, your call was suddenly terminated. Define the condition and discuss the possible reasons that caused the condition. (6 marks) (c) What is soft handover? Differentiate the condition of soft handover with the process discussed in Q(b) above. (5 marks) (d) Determine: i. the channel capacity for a cellular telephone area comprised of 9 macrocells with 8 channels per cell. (2 marks) ii. the channel capacity if each macrocell is split into 3 minicells. (2 marks) iii. channel capacity if each minicell is further split into four microcell. (2 marks)