Suppose four active nodes – nodes A, B, C and D – are competing for access to a channel using slotted ALOHA. Assume each node ha an infinite number of packets to send. Each node attempts to transmit in each slot with probability p. The first slot is numbered slot 1, the second slot is numbered slot 2, and so. What is the probability that node A succeeds for the first time in slot 5?
I found a solution which does something like that:
(1-p(A))^4 * P(A).
Can some body please explain me this solution?
Zulfi.
I found a solution which does something like that:
(1-p(A))^4 * P(A).
Can some body please explain me this solution?
Zulfi.