Question

Question 2

(a) Explain the meaning of the following terms in the context of cellular telephony networks:

(i) Frequency reuse

(ii) Trunking

(iii) Micro and macro cells

(iv) Umbrella cells Describe the trade-off that must be made when selecting the number of cells which should be clustered together to form a location area in a cellular network. [6 marks]

(b) A number of techniques are used on both the base station and mobile station (i) to manage power consumption, and (ii) to minimise the effects of network interference. For each of the following terms, describe how the feature works and comment on whether, and how, it is used to address (i) and\or (ii).

(i) Time Division Duplexing

(ii) Adaptive Power Control

(iii) Discontinuous Transmission [4.5 marks]

(c) Subscriber A is a subscriber of an Irish mobile network who is roaming on a French mobile network. Subscriber B is a subscriber of UK mobile network who is currently an inbound roamer on subscriber A’s home network. Subscriber A initiates a voice call to subscriber B.

(i) Describe, with the aid of a diagram, the steps involved in the routing of this call to the point where subscriber B’s handset is paged.

(ii) Using this example, clearly explain the difference between late and early call forwarding.

(iii) Explain the meaning of the term call tromboning in the context of one of these call forwarding scenarios and outline how this is typically resolved when it occurs. [9.5 marks]

Answer 1

sorry guys i really don't get full time to solve this question because they are very long enough to write. if you want that questions to be answered please post again that question i.e question (c). please cooperate with me i have all answers that are shown in the figures please understand it properly by its name. thank you..