—Most of the contemporary research in wireless networks is primarily based on simulations or in-house small scale experimental setups that are highly customized for the experiment and hence difficult to re-use. Although, this may be useful for smaller experiments, it is very difficult to replicate the process without writing extensive scripts for controlling and collating the results of the experiment which may take up more time than the actual experiment in some cases. The main hindrance to facilitating experiments is the lack of a flexible framework that will allow researchers to conduct several different experiments with ease and to be able to repeat them as often as necessary for statistical consistency. The above considerations motivated the ORBIT testbed project, which is a multi-user experimental facility to support research on nextgeneration wireless networks. In this paper, we describe the software architectural framework to facilitate repeatable wireless experiments that pr...