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. ICRMA

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... ynamically 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.