Software-Defined Radio Implementation of Age-of-Information-Oriented Random Access

Han, Zixiao; Liang, Jiaxin; Gu, Y. T.; Chen, He

doi:10.48550/arxiv.2003.14329

Cited by 1 publication

(5 citation statements)

References 19 publications

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“…They are implemented using GNU Radio which is a software framework that provides a wide range of signal processing blocks. The resulting code is run on Ettus Research's USRP B200mini-i which are lower-priced SDRs than the ones used in [9] and [12]. Our implementation is publicly available at: https://github.com/oayan/gr-ieee802-15-4/tree/maint-3.7.…”

Section: Results and Evaluationmentioning

confidence: 99%

“…The vast majority of the AoI research focuses on theoretical work [4], [6] as summarized in [7]. In particular, there have been only a few practical works mentioning AoI [8]- [12] that conduct a study with real-world equipment. [8], [10], [11] measure AoI performance using various technologies, namely Ethernet, Wifi, 2G, 3G and LTE.…”

Section: A Related Workmentioning

confidence: 99%

“…To the best of our knowledge, the only implementationbased works mentioning AoI and proposing a customized solution are [9], [12]. They measure AoI in a network of multiple software-defined radios (SDRs) where the considered application is timestamped packet exchange but not a realworld example requiring time-critical information.…”

Section: A Related Workmentioning

confidence: 99%

“…They show that AoI is decreased significantly through the use of LCFS strategy. Authors in [12] use SDRs programmed with GNURadio, which is a software framework with a rich selection of signal processing blocks. They compare two different random access protocols, namely Age-Independent Random Access and Age-Dependent Random Access .…”

Section: A Related Workmentioning

confidence: 99%

“…Moreover, most of the practical AoI research consists of measurements conducted on real-world equipment without any modifications inside the communication stack. Even though [9] and [12] propose a customized MAC layer implementation with SDRs, they are neither able to provide any open-source code to be used by the AoI community, nor any comprehensive study including different queuing and medium access strategies jointly.…”

Section: Wireless Networkmentioning

confidence: 99%

See 4 more Smart Citations

An Experimental Framework for Age of Information and Networked Control via Software-Defined Radios

Ayan

Kellerer

2021

ICC 2021 - IEEE International Conference on Communications

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Cyber-physical systems (CPS) classify the set of applications where a physical, real-time process is monitored and controlled over a communication network. In CPS, providing fresh information is essential to satisfy the requirements imposed by time-critical applications. In order to quantify information freshness, age of information (AoI) has been proposed and employed as a metric for cross-layer design. In contrast to the vast majority of AoI-research, there have been a few attempts to measure AoI in real deployment scenarios. However, those contain either unalterable communication stack or are not publicly available for possible extensions. In this work, we present an open-source, experimental framework that is using softwaredefined radios for wireless communication. Our implementation contains centralized resource allocation using beacon packets and various conventional packet management policies such as first come first serve and last come first serve. In a case study with multiple inverted pendulums sharing a wireless channel, we show how the communication stack can be tailored to keep the information fresh in the network. We present the performance of feedback control loops in relation to AoI and show the benefit of keeping the information fresh on realistic CPS applications.

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Section: Results and Evaluationmentioning

confidence: 99%