1. A method for providing congestion control in a slotted Aloha communication system that includes a hub in communication with one or more RCST, the method occurring at the hub comprising: receiving segments from one or more RCST, wherein each segment is received from an RCST at the hub during a timeslot, and for each received segment: incrementing a transmission counter; determining whether the segment is a retransmission segment, if so, incrementing a retransmission counter; and determining whether the segment is an unsuccessful collision retransmission segment, if so, incrementing a successful retransmission counter; and transmitting a message to each RCST after a first time interval, wherein the message includes the transmission counter, the retransmission counter, and the successful retransmission counter.