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Reply To: Erlang Formula


Mobile users in a certain GSM cell generate 700 calls per hour. Furthermore users
in this cell’s coverage area receive 1000 calls per hour while calls are handed over
from neighbouring cells in to this cell at a rate, 300 calls per hour. Assuming that all
calls (handover and new) have an average call length of 3 minutes, what is the
bandwidth required in this cell to support all calls at a GoS blocking probability of
1%. (Assume that the handover traffic from this cell to any of the neighbouring cells
is negligible.)