A distributed embedded web based automated testbed for wireless sensor networks

Abstract

Tests of distributed wireless networks pose various challenges with regard to node, link, path, and management problems.In this contribution a novel testbed architecture is presented, which helps in the development of distributed wireless networks. In the case of our project, it helped with the development of a routing protocol for energy autarkic network nodes. The testbed contains various elements: The major part is an embedded web server using web and AJAX technology. Thus, the management servers resources can be kept extremely lean, and a large number of those nodes can potentially be dislocated throughout the network. The server includes an extremely streamlined JavaScriptlibrary for use on very lean microcontrollers. Further elements include a wave-guided bread-board RF installation, fully controlled by software in order to automatically run as many testcases as possible and automatic test routines in the wireless nodes to significantly reduce the effort of regression tests.

Automated Physical Testbeds for Emulation of Wireless Networks

“…The emulator originated form the implementation of the EnOcean Radio protocol (ERP), the details of this emulator and experience are described in [2]. This presented an approach of management and sniffing tools for distributed wireless networks.…”

“…Based on the experience from earlier emulator setups [2] [1], all elements have additional shielding and are carefully mounted whereas links were fixed with a torque wrench. All elements and connections are characterized after they have been built-in with regard to attenuation, reflection, and phase shift (delay).…”

“…As in the simulation approach emulators can generate predefined emulated network conditions and traffic dynamics for different use cases. Hardware-based emulation clearly achieves the most physical layer realism; practical considerations such as ease of development, control, and experimental repeatability have made emulation the dominant experimental technique [1].The requirements of the development of an emulator can be seen in [2].…”

“…Authors have developed first generation of our automated RF emulator for distributed wireless sensor networks for analysing EnOcean Radio Protocol (ERP) [2], and the second generation developed to test Ko-TAG subsystem [1]. In this paper we describe the architecture and implementation details our third generation fully automated emulator for wireless networks.…”

Open source 6Lo protocol stack for wireless embedded systems

“…Fig. 8: Architecture of APTB Based on the experience from earlier emulator setups, all elements have additional shielding and are carefully mounted [13] whereas links were fixed with a torque wrench. All elements and connections are characterized after they have been built-in with regard to attenuation, reflection, and phase shift (delay).…”