Question

Think about a cellular system with a total bandwidth of 30 MHz. Each full duplex voice or control channel uses two 25 kHz simplex channels. It is supposed that

1) The system uses a 9-cell reuse pattern and 0.75 MHz of total bandwidth is allocated for control channels.

2) The system service area consists of 50 cells;

3) the call blocking probability bound is 2 percent, as given by the Erlang-B formula. If the o?ered tra?c per user is 0.025 Erlangs, calculate-

(a) the tra?c load of each cell and trunking e?ciency.

(b) The total number of users in each cell and in system, correspondingly;

(c) The number of mobile users per channel in each cell and in system, respectively;

(d) The maximum number of users in service at any instant in the system.