scholarly journals Age of Information in an URLLC-enabled Decode-and-Forward Wireless Communication System

Author(s):  
Chathuranga M. Wijerathna Basnayaka ◽  
Dushantha Nalin K. Jayakody ◽  
Tharindu D. Ponnimbaduge Perera ◽  
Moises Vidal Ribeiro
2021 ◽  
Author(s):  
Chathuranga M. Wijerathna Basnayaka

Age of Information (AoI) measures the freshness ofdata in mission critical Internet-of-Things (IoT) applications i.e.,industrial internet, intelligent transportation systems etc. In thispaper, a new system model is proposed to estimate the averageAoI (AAoI) in an ultra-reliable low latency communication(URLLC) enabled wireless communication system with decodeand-forward relay scheme over the quasi-static Rayleigh blockfading channels. Short packet communication scheme is used tomeet both reliability and latency requirements of the proposedwireless network. By resorting finite block length informationtheory, queuing theory and stochastic processes, a closed-formexpression for AAoI is obtained. Finally, the impact of the systemparameters, such as update generation rate, block length andblock length allocation factor on the AAoI are investigated. Allresults are validated by the numerical results


2021 ◽  
Author(s):  
Chathuranga Basnayaka ◽  
Dushantha Nalin K. Jayakody ◽  
Tharindu D. Ponnimbaduge Perera ◽  
Moises Vidal Ribeiro

2021 ◽  
Author(s):  
Chathuranga M. Wijerathna Basnayaka

Age of Information (AoI) measures the freshness ofdata in mission critical Internet-of-Things (IoT) applications i.e.,industrial internet, intelligent transportation systems etc. In thispaper, a new system model is proposed to estimate the averageAoI (AAoI) in an ultra-reliable low latency communication(URLLC) enabled wireless communication system with decodeand-forward relay scheme over the quasi-static Rayleigh blockfading channels. Short packet communication scheme is used tomeet both reliability and latency requirements of the proposedwireless network. By resorting finite block length informationtheory, queuing theory and stochastic processes, a closed-formexpression for AAoI is obtained. Finally, the impact of the systemparameters, such as update generation rate, block length andblock length allocation factor on the AAoI are investigated. Allresults are validated by the numerical results.


2021 ◽  
Author(s):  
chathuranga basnayaka

<div>This paper considers an unmanned aerial vehicles (UAV) communication network, where UAV operate as an aerial mobile relay between a source and a destination of the network. To capture the “timeliness” of the received information at the destination node, a new performance metric named age of information (AoI) is considered. In addition, a short packet communication scheme maintains low latency in the proposed UAV wireless communication system. The finite block-length theory investigates the performances of short packet communications scheme in the UAV-assisted wireless communications system. In this paper, the Average Age of Information (AAoI) is estimated by applying the Stochastic Hybrid Systems (SHS) model. The SHS model comprises discrete states represents events that reset the AoI process and continuously dynamics that represent linearly growing age processes. Finally, a closed-form expression for the AAoI of the proposed UAV wireless communication system is derived and it can be used to estimate the optimal altitude, block length and other parameters.</div>


2021 ◽  
Author(s):  
chathuranga basnayaka

<div>Age of Information (AoI) measures the freshness of data in mission critical Internet-of-Things (IoT) applications i.e., industrial internet, intelligent transportation systems etc. In this paper, a new system model is proposed to estimate the average AoI (AAoI) in an ultra-reliable low latency communication (URLLC) enabled wireless communication system with decodeand- forward relay scheme over the quasi-static Rayleigh block fading channels. Short packet communication scheme is used to meet both reliability and latency requirements of the proposed wireless network. By resorting finite block length information theory, queuing theory and stochastic processes, a closed-form expression for AAoI is obtained. Finally, the impact of the system parameters, such as update generation rate, block length and block length allocation factor on the AAoI are investigated. All results are validated by the numerical results.</div>


2020 ◽  
Vol 27 (5) ◽  
pp. 162-167
Author(s):  
Tharindu D. Ponnimbaduge Perera ◽  
Dushantha Nalin K. Jayakody ◽  
Ioannis Pitas ◽  
Sahil Garg

Sign in / Sign up

Export Citation Format

Share Document