Special Issue: Performance evaluation of communications in distributed systems and Web based service architectures

摘要

Taha et al. [1] evaluate the consequence of choosing a frame structure type in Worldwide Interoperability for Microwave Access (WiMAX) networks based non-transparent relay stations (ntRS). In the IEEE (Institute of Electrical and Electronics Engineers) 802.16j -2009 protocol, two frame structure types are possible: single frame and multi frame. From performance evaluation point of view, a comparison has never been investigated. The authors suggest to expand on Light WiMAX ns2 add-on to support ntRS, the two frame structure types, in addition to the relevant operational requirements [e.g., quality of service (QoS)]. They show that the multi-frame structure allows higher throughput and voice capacities whereas the single frame shows some general advantage in terms of delay.