In this paper, R-ALOHA systems with propagation delay, finite buffer capacity and finite user population are analyzed using Tagged User Approach. The system throughput, message response time, message delay-time distribution and message blocking probability are obtained. It is assumed that each message consists of a random number of packets with a general distribution, and each user have a finite buffer capacity. To maintain the fairness to all users, it is assumed that each message in the buffer is transmitted independently that is, a user has to release the reserved slot after finishing the transmission of a message even if it has more messages waiting in the buffer. The analysis can be extended to R-ALOHA systems with infinite buffer capacity straightforwardly. The accuracy of the analysis is verified by simulations.
Journal of Network and Computer Applications
Department of Systems and Computer Engineering

Sheikh, A.U.H. (Asrar U.H.), Wan, T. (Tan), Alakhdhar, S.Z., Lambadaris, I, & Devestsikiotis, M. (Michael). (2004). Performance analysis of buffered R-ALOHA systems using tagged user approach. Journal of Network and Computer Applications, 27(3), 131–150. doi:10.1016/j.jnca.2003.11.002