QUESTION 3 [10 Marks] (a) Based on Figure 3 below, both station A and station Care trying to transmit to station B wirelessly. i) Elaborate on hidden terminal and fading problems. [4 Marks] ii) What is the most suitable Medium Access Control (MAC) protocol for wireless connectivity like this? [1 mark] AS C's siga SCE Figure 3 Three nodes connected wirelessly (b) The Figure 4 below shows a simple 3G system architecture. Explain how 3G users access data and voice network using this architecture. [5 marks] MSC X G Public telephone network Gateway MSC X radio network controller G SGSN Public Internet GGSN Figure 4 QUESTION 3 [10 Marks] (a) Based on Figure 3 below, both station A and station Care trying to transmit to station B wirelessly. i) Elaborate on hidden terminal and fading problems. [4 Marks] ii) What is the most suitable Medium Access Control (MAC) protocol for wireless connectivity like this? [1 mark] AS C's siga SCE Figure 3 Three nodes connected wirelessly (b) The Figure 4 below shows a simple 3G system architecture. Explain how 3G users access data and voice network using this architecture. [5 marks] MSC X G Public telephone network Gateway MSC X radio network controller G SGSN Public Internet GGSN Figure 4