A near optimum MAC protocol based on the incremental collision resolution multiple access protocol for CDMA based communications system

This paper presents and analyses a new near optimum medium access control (MAC) protocol. The proposed access scheme is suitable for a CDMA based communication system and keeps under control and upper bounded the number of simultaneous transmissions. The protocol's throughput performance approaches that of an ideal channel access protocol based on a distributed transmission queue and incremental collision resolution. The proposed protocol extends the ICRMA protocol to a CDMA environment. ICRAMA dynamically divides the channel into cycles of variable length. Each cycle consists of a contention period and a queue transmission period ICRMA resolves collisions in lesser number of steps than the DQRAP protocol, which is one of the best protocols based on collision resolution proposed to date.