The Performance of Collision Arbitration for ISO/IEC 18000-6 RFID Standard

For multiple random accesses, a low throughput due to channel contention is the major limitation. The most latency occurs in the contention phase and, therefore, reducing the delay time thus becomes a relevant task. A collision occurs in real network access if two or more packets are simultaneously transmitted. Hence, the contention must be resolved when applying a protocol in the wireless data network. RFID anti-collision of ISO/IEC 18000-6 adopts the concept of tree expansion in order to reduce the delay time and enhance the throughput. In this paper, we want to point out the important of this probability factors. Analyses results indicate that the variety of the mean delay time performance is insignificant related to its probability factors. However, the impact on the throughput performance due to these probability factors is significant.