Delay analysis of DRP in MBOA UWB MAC

Multi-band OFDM Alliance (MBOA) Ultra-wide band (UWB) is a candidate of IEEE 802.15.3a, the standard for high speed Wireless Personal Area Networks (WPAN). The Media Access Control (MAC) protocol of MBOA consists of distributed reservation period (DRP) and Prioritized contention access (PCA), where DRP provides flexible distributed slot reservation for Quality of Service (QoS) support. This paper analyzes the delay performance of DRP channel access for MBOA UWB MAC. In DRP, the reserved periodical slot pattern in each super-frame for station can be arbitrary and not evenly distributed. To address the difference in delay performance introduced by reservation pattern, a bi-dimensional Markov chain model is proposed, where one dimension is for queue size distribution and the other is for allocated slots. The accuracy of the model is verified by simulations and insights has been given for slot reservation in MBOA.