Various Detection Techniques and Platforms for Monitoring Interference Condition in a Wireless Testbed

Abstract

Abstract. Recently the constant growth of the wireless communication technology has caused a huge demand for experimental facilities. Hence many research institutes setup public accessible experimental facilities, known as testbeds. Compared to the facilities developed by individual researchers, a testbed typically offers more resources, more flexibilities. However, due to the fact that equipments are located remotely and experiments involve more complex scenarios, the required complexity for analysis is also higher. A deep insight on the underlying wireless environment of the testbed becomes necessary for comprehensive analysis. In this paper, we present a framework and associated techniques for monitoring the wireless environment in a large scale wireless testbed. The framework utilizes most common resources in the testbed, such as WI-FI nodes, as well as some high-end software-defined radio platforms. Information from both physical layer and network layer are taken into account. We observe that feature detection is more sensitive than general energy detection for dedicated technologies, and distributed spectrum sensing can further improve the detection sensitivity. Such observations are applied to achieve better interference detection. The performance is mainly analyzed experimentally.

Security Framework for IoT Devices against Cyber-attacks

“…Nowadays, cybercriminals use intelligent techniques to launch jamming attacks to evade various defensive measures like IDS/ Intrusion Prevention System (IPS). In defence to such attacks, a monitoring system is proposed by Liu et al to distinguish interference and a real transmission where the energy consumed is verified each time to make sure it is not an attack [10]. This feature and energy monitoring system can identify channel interference efficiently but fall short for other attacks.…”

Efficient global optimization of multi-parameter network problems on wireless testbeds

“…Interestingly, this region is not located on channels where background interference is applied on but on the neighboring channels. This is due to the fact that the speaker and interferer nodes apply CSMA/CA medium access on identical channels but to a limited scale on neighboring channels which results in degraded performance [25].…”

“…Thus the same principle applies to the experiment on channel 1 and shows decreasing repeatability as transmit power increases. However, due to the fact that CSMA/CA is used on a limited scale on neighboring channels [25], repeatability at channel 11 is slightly better than at channel 1. On the other hand, the experiment of Figure 10(b) at channel 6 has minimal background interference, hence the experiment behaves similar to the case without interference.…”

Building accurate radio environment maps from multi-fidelity spectrum sensing data

“…There is little external interference at the Zwijnaarde testbed as no regular human activity is present and most of its walls and ceiling are covered with metal. Since Zwijnaarde testbed was deployed more recently, the devices in this testbed are more advanced in terms of processing power, memory and storage [26,27].…”