NCTUNs tool for IEEE 802.16J mobile WiMAX relay network simulations

Shie-Yuan Wang*, Hsin Yu Chen, Shih Wei Chuang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


An IEEE 802.16j mobile WiMAX relay network is a next-generation mobile wireless broadband network. Compared with IEEE 802.16e, which also supports mobility, IEEE 802.16j introduces relay stations to the network to help relay packets between the base station and a mobile station. When a mobile station is shadowed by a building and thus has a badquality channel to the base station, such a relay design can help it achieve a higher throughput from/to the base station. Since IEEE 802.16j is a new standard and no such products are available yet in the market for researchers to evaluate its performances, developing a network simulator that supports IEEE 802.16j network simulations is very valuable. In this chapter, we present how we extend NCTUns, a network simulator and emulator that directly uses real-life TCP/IP protocol stack and applications to generate accurate simulation results, to support IEEE 802.16j network simulations. NCTUns supports the two relay modes defined in IEEE 802.16j: the transparent mode and non-transparent mode. More information about NCTUns is available at

Original languageEnglish
Title of host publicationComputer Science Research and Technology
PublisherNova Science Publishers, Inc.
Number of pages31
ISBN (Electronic)9781619428225
ISBN (Print)9781617286889
StatePublished - 1 Jan 2011


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