EVALUATION OF THE ZIGBEE TRANSMISSION REPETITION MECHANISM IN THE VARIABLY-LOADED REVERBERATION CHAMBER

The purpose of this paper is to provide both qualitative and quantitative assessment of one of the methods for providing reliable transmission in the ZigBee system. After intensive research on the time delay spread in a variably loaded reverberation chamber, this facility was then used to measure the Packet Error Rate under multipath conditions ranging from an unloaded to an overloaded chamber case. In all measurements, the key parameter was the number of allowed packet repetitions (retries). Eventually, recommendations were given regarding the optimal use of retries and their impact on ZigBee performance under difierent multipath scenarios obtained in the reverberation chamber and related to particular propagation environments to which these conditions are typical.