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Ultra-reliable low-latency communications (URLLC) require innovative approaches to modeling channel and interference dynamics, extending beyond traditional average estimates to encompass entire statistical distributions, including rare and…

Systems and Control · Electrical Eng. & Systems 2025-01-22 Fateme Salehi , Aamir Mahmood , Sinem Coleri , Mikael Gidlund

Efficient handover (HO) strategies are essential for maintaining the stringent performance requirements of ultra-reliable communication (URC) systems. This work introduces a novel HO framework designed from a physical-layer perspective,…

Networking and Internet Architecture · Computer Science 2025-09-29 Dian Echevarría Pérez , Onel L. Alcaraz López , Hirley Alves

A key building block in the design of ultra-reliable communication systems is a wireless channel model that captures the statistics of rare events occurring due to significant fading. In this paper, we propose a novel methodology based on…

Signal Processing · Electrical Eng. & Systems 2024-01-12 Niloofar Mehrnia , Sinem Coleri

Ultra-reliable and low-latency communication (URLLC) will play a key role in fifth-generation (5G) and beyond networks, enabling mission-critical applications. Meeting the stringent URLLC requirements, characterized by extremely low packet…

Signal Processing · Electrical Eng. & Systems 2026-04-29 Parmida Valiahdi , Niloofar Mehrnia , Walid Saad , Sinem Coleri

Ultra-reliable low latency communication (URLLC) requires the packet error rate to be on the order of $10^{-9}$-$10^{-5}$. Determining the appropriate transmission rate to satisfy this ultra-reliability constraint requires deriving the…

Information Theory · Computer Science 2024-01-12 Niloofar Mehrnia , Sinem Coleri

A proper channel modeling methodology that characterizes the statistics of extreme events is key in the design of a system at an ultra-reliable regime of operation. The strict constraint of ultra-reliability corresponds to the packet error…

Signal Processing · Electrical Eng. & Systems 2024-01-12 Niloofar Mehrnia , Sinem Coleri

This paper derives the distribution of the maximum end-to-end (e2e) signal to noise ratio (SNR) in an opportunistic relay selection based cooperative relaying (CR) network having large number of non-identical relay links between the source…

Information Theory · Computer Science 2020-10-21 Athira Subhash , Sheetal Kalyani

Estimating the probability of rare channel conditions is a central challenge in ultra-reliable wireless communication, where random events, such as deep fades, can cause sudden variations in the channel quality. This paper proposes a…

Signal Processing · Electrical Eng. & Systems 2024-07-08 Tobias Kallehauge , Anders E. Kalør , Pablo Ramírez-Espinosa , Christophe Biscio , Petar Popovski

High reliability guarantees for Ultra-Reliable Low-Latency Communications (URLLC) require accurate knowledge of channel statistics, used as an input for rate selection. Exploiting the spatial consistency of channel statistics arises as a…

Information Theory · Computer Science 2022-09-23 Tobias Kallehauge , Anders E. Kalør , Pablo Ramírez-Espinosa , Maxime Guillaud , Petar Popovski

This paper proposes exploiting the spatial correlation of wireless channel statistics beyond the conventional received signal strength maps by constructing statistical radio maps to predict any relevant channel statistics to assist…

Signal Processing · Electrical Eng. & Systems 2022-08-17 Tobias Kallehauge , Pablo Ramìrez-Espinosa , Anders E. Kalør , Christophe Biscio , Petar Popovski

In 5G and beyond networks, the radio communication between a User Equipment (UE) and a base station (gNodeB or gNB), also known as the air interface, is a critical component of network access and connectivity. During the connection…

Cryptography and Security · Computer Science 2025-11-04 Dang Kien Nguyen , Rim El Malki , Filippo Rebecchi , Raymond Knopp , Melek Önen

Proper determination of the transmission rate in ultra-reliable low latency communication (URLLC) needs to incorporate a confidence interval (CI) for the estimated parameters due to the large amount of data required for their accurate…

Information Theory · Computer Science 2024-01-12 Niloofar Mehrnia , Sinem Coleri

Attaining ultra-reliable communication (URC) in fifth-generation (5G) and beyond networks requires deriving statistics of channel in ultra-reliable region by modeling the extreme events. Extreme value theory (EVT) has been previously…

Information Theory · Computer Science 2024-01-12 Niloofar Mehrnia , Sinem Coleri

Channel state information (CSI) is crucial for achieving ultra-reliable low-latency communication (URLLC) in wireless networks. The main associated problems are the CSI acquisition time, which impacts the delay requirements of time-critical…

Networking and Internet Architecture · Computer Science 2023-08-10 Dian Echevarría Pérez , Onel L. Alcaraz López , Hirley Alves

Future 5G cellular networks supporting ultra-reliable, low-latency communications (URLLC) could employ random access communication to reduce the overhead compared to scheduled access techniques used in 4G networks. We consider a wireless…

Information Theory · Computer Science 2018-06-06 Derya Malak , Howard Huang , Jeffrey G. Andrews

Diversity schemes play a vital role in improving the performance of ultra-reliable communication systems by transmitting over two or more communication channels to combat fading and co-channel interference. Determining an appropriate…

Information Theory · Computer Science 2024-01-12 Niloofar Mehrnia , Sinem Coleri

Ultra-reliable low-latency communication (uRLLC) is a pivotal enabler for B5G/6G networks, yet it faces severe challenges from rare but critical extreme events, which are characterized by heavy tails in the delay distribution. While the…

Information Theory · Computer Science 2026-05-29 Yu Zhang , Xinyue Yang , Dongming Wang , Boyou Yi , Yaqin Xie , Hua Zhou , Zhizhong Zhang

Periodic inspections are necessary to keep railroad tracks in state of good repair and prevent train accidents. Automatic track inspection using machine vision technology has become a very effective inspection tool. Because of its…

Computer Vision and Pattern Recognition · Computer Science 2015-10-21 Xavier Gibert , Vishal M. Patel , Rama Chellappa

In this letter, we analyze the achievable rate of ultra-reliable low-latency communications (URLLC) in a randomly modeled wireless network. We use two mathematical tools to properly characterize the considered system: i) stochastic geometry…

Information Theory · Computer Science 2019-10-31 Jeonghun Park

Guaranteeing stringent data freshness for low-altitude unmanned aerial vehicles (UAVs) in shared spectrum forces a critical trade-off between two operational costs: the UAV's own energy consumption and the occupation of terrestrial channel…

Systems and Control · Electrical Eng. & Systems 2026-03-17 Bowen Li , Jiping Luo , Themistoklis Charalambous , Nikolaos Pappas
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