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- ArticleAugust 2024
Maintaining Data Freshness in Multi-channel Multi-hop Wireless Networks
AbstractAge of Information (AoI) has emerged as a new metric to quantify the freshness of data and has attracted extensive interests recently. In this paper, we investigate the first work of optimizing average AoI for data collection in a sink-based ...
- research-articleJuly 2024
Understanding the impact of persistence and propagation on the Age of Information of broadcast traffic in 5G NR-V2X sidelink communications
Computer Networks: The International Journal of Computer and Telecommunications Networking (CNTW), Volume 248, Issue Chttps://doi.org/10.1016/j.comnet.2024.110503AbstractThe current Cellular V2X (C-V2X) standard for direct communication between vehicles is based on the so called Semi-Persistent Scheduling (SPS) algorithm. It is based on the multiple access structure of 5G New Radio (NR) and exploits sensing and ...
- research-articleJuly 2024
An adaptive MAC-agnostic ranging scheme for underwater acoustic mobile networks
Computer Networks: The International Journal of Computer and Telecommunications Networking (CNTW), Volume 247, Issue Chttps://doi.org/10.1016/j.comnet.2024.110430AbstractIn the last ten years several simulation studies on Autonomous Underwater Vehicle (AUV) swarm fleet formation have been performed, and some preliminary sea demonstrations of proof-of-concept prototypes were carried out. However, their actual ...
- research-articleJuly 2024
Multi-cell content caching: Optimization for cost and information freshness
Computer Networks: The International Journal of Computer and Telecommunications Networking (CNTW), Volume 247, Issue Chttps://doi.org/10.1016/j.comnet.2024.110420AbstractIn multi-access edge computing (MEC) systems, there are multiple local cache servers caching contents to satisfy the users’ requests, instead of letting the users download via the remote cloud server. In this paper, a multi-cell content ...
- research-articleMay 2024
Threshold ALOHA with sensing data lookup in low-duty-cycle wireless networks
Telecommunications Systems (TESY), Volume 86, Issue 4Pages 757–767https://doi.org/10.1007/s11235-024-01145-2AbstractSlotted ALOHA is a well-known multiple access control protocol that devices use to access a radio channel in wireless networks. Age of information (AoI) is a key network performance indicator that represents the elapsed time between the time data ...
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- research-articleJuly 2024
Age of information minimization in hybrid cognitive radio networks under a timely throughput constraint
AbstractExchanging time-critical information is prevalent in various industrial applications where low latency and timely delivery are paramount. Through this work, we consider a cognitive radio network comprised of multiple secondary users with time-...
- research-articleJuly 2024
AoI minimization of ambient backscatter-assisted EH-CRN with cooperative spectrum sensing
Computer Networks: The International Journal of Computer and Telecommunications Networking (CNTW), Volume 245, Issue Chttps://doi.org/10.1016/j.comnet.2024.110389AbstractTo evaluate the timeliness and freshness of information from energy-constrained devices, we minimize the weighted average age of information (AoI) of the ambient backscatter-assisted energy harvesting cognitive radio network (AB-EH-CRN), where ...
- research-articleMarch 2024
Enhancing information freshness in multi-class mobile edge computing systems using a hybrid discipline
AbstractTimely status updating in mobile edge computing (MEC) systems has recently gained the utmost interest in internet of things (IoT) networks, where status updates may need higher computations to be interpreted. Moreover, in real-life situations, the ...
- articleApril 2024
Age of information is not just a number: Status updates against an eavesdropping node
AbstractWe consider status updates exchanged between a transmitter and a legitimate receiver, also including an eavesdropper that captures pieces of information. In the absence of such a threat, the connection between the transmitter and the receiver is ...
- research-articleApril 2024
Age of information optimization in cyber–physical systems with stateful packet management techniques
AbstractAge of information (AoI) is a concept that represents the degree of freshness that a monitor has about a remote source of information. Mean AoI and peak AoI can be used in Cyber–Physical Systems (CPS) to optimize, evaluate, and scale different ...
- research-articleMay 2024
Collaborative relay for achieving long-term and low-AoI data collection in UAV-aided IoT systems
AbstractIn Internet of Things (IoT) systems, sensor nodes are frequently placed in remote and unattended locations to monitor environmental data. One significant challenge is ensuring the timely and efficient transmission of data generated by these ...
- research-articleNovember 2023
- research-articleFebruary 2024
Minimizing age of information under arbitrary arrival model with arbitrary packet size
AbstractWe consider a single source–destination pair, where information updates (in short, updates) arrive at the source at arbitrary time instants. For each update, its size, i.e. the service time required for complete transmission to the destination, ...
- research-articleOctober 2023
URLLC-eMBB hierarchical network slicing for Internet of Vehicles: An AoI-sensitive approach
AbstractNetwork slicing has been considered as a promising candidate to meet the heterogeneous Quality of Service (QoS) requirements of various vehicular applications. In this paper, network slicing is utilized on the Road Side Unit (RSU) side for the ...
- ArticleDecember 2023
Fair Scheduling Under Packet Management: Competitive Analysis of Age of Information
AbstractMaintaining up-to-date information is essential for enhancing the quality of service in mobile devices. The freshness of a mobile device is typically evaluated using the Age of Information (AoI) metric. This study considers a system where a Base ...
- research-articleSeptember 2023
Focusing on information context for ITS using a spatial age of information model
Computer Communications (COMS), Volume 209, Issue CPages 203–216https://doi.org/10.1016/j.comcom.2023.07.002AbstractNew technologies for sensing and communication act as enablers for cooperative driving applications. Sensors are able to detect objects in the surrounding environment and information such as their current location is exchanged among ...
- research-articleMay 2023
Is proportional fair scheduling suitable for age-sensitive traffic?
Computer Networks: The International Journal of Computer and Telecommunications Networking (CNTW), Volume 226, Issue Chttps://doi.org/10.1016/j.comnet.2023.109668AbstractProportional Fair (PF) scheduling with successful deployments in various cellular wireless networks and wireless LANs, aims at maximizing the sum of the logarithms of user throughputs. PF scheduling is known to strike an appropriate ...
- research-articleMarch 2023
Modeling age of information in a cooperative slotted Aloha network
Wireless Networks (WIRE), Volume 29, Issue 5Pages 2405–2417https://doi.org/10.1007/s11276-023-03314-8AbstractIn this paper, we study a slotted Aloha cooperative network where a source node and a relay node send status updates of two underlying stochastic processes to a common destination. Additionally, the relay node cooperates with the source by ...
- rapid-communicationJanuary 2023
Age of information in IoT-based networked control systems: A MAC perspective
Automatica (Journal of IFAC) (AJIF), Volume 147, Issue Chttps://doi.org/10.1016/j.automatica.2022.110652AbstractTimeliness of information is critical for accurate decision making in data-driven systems. As large-scale systems based on Internet of Things (IoT) technologies start populating shop floors, their performance in terms of timeliness ...
- research-articleAugust 2022
Optimal scheduling strategy of AUV based on importance and age of information
AbstractIn this paper, we consider a underwater wireless sensor network, which is composed of an autonomous underwater vehicle (AUV) and the underwater data collection stations. Constrained by limited resources, at each decision epoch the AUV selects one ...