Performance modeling and analysis of MAC protocol based on differentiated services in WSNs
WU Zhi-gang · Jisuanji gongcheng yu sheji · 2010
A differentiated services-based Markov chain model for IEEE 802.15.4 wireless sensor networks supporting real-time multi-media application is proposed.The main idea of this mechanism is to assign different priorities for different data flows according to QoS requirement(delay-sensitive or not).On the other hand,we also analyze and investigate the impacts of parameter settings of the protocol mechanism on the network performance.Our mathematical analyses show that the reasonable protocol parameter settings for different data flows have a significant effect on the performance of data flows with high-priority,but less effect on the performance of data flows with low-priority.