Elif Uysal

E-mail

uelif@metu.edu.tr

Department

ORCID

0000-0002-7258-4872

Scopus Author ID

6602270978

Web of Science Researcher ID

AAF-7958-2019

Random Access with Delayed Feedback: Stability, Delay, and Age of Information Ince, Yiǧit; Uysal, Elif (2026-01-01) We study random access for channels with long propagation delay. In such channels, waiting for feedback requires slotted ALOHA to use large slots, leading to reduced throughput, increased delay and Age of Information (AoI)...
Goal-Oriented Status Updating for Real-time Remote Inference over Networks with Two-Way Delay Arı, Çağrı; Shisher, Kamran Chowdhury; Sun, Yin; Uysal, Elif (2026-01-01) We study a setting where an intelligent model (e.g., a pre-trained neural network) infers the real-time value of a target signal using data samples transmitted from a remote source. The transmission scheduler decides (i) t...
Taming the Heavy Tail: Age-Optimal Preemption Li, Aimin; Ince, Yiǧit; Uysal, Elif (2026-01-01) This paper studies a continuous-time joint sampling-and-preemption problem, incorporating sampling and preemption penalties under general service-time distributions. We formulate the system as an impulse-controlled piecewi...
Fresh Data Delivery: Joint Sampling and Routing for Minimizing the Age of Information Atasayar, Adem Utku; Li, Aimin; Arl, Çarl; Uysal, Elif (2025-10-23) In this paper, we extend the freshness-oriented sampling problem by incorporating controlled delay statistics through heterogeneous routing options, where the Age of Information (AoI) serves as the metric for data freshnes...
Goal-Oriented Random Access (GORA) Topbas, Ahsen; Ari, Cagri; Kaya, Onur; Uysal, Elif (2025-05-01) We propose Goal-Oriented Random Access (GORA), where transmitters jointly optimize what to send and when to access the shared channel to a common access point, considering the ultimate goal of the information transfe...
Age of Information in LEO Satellite Communications Supported by BD-RIS Zarini, Hosein; Kazemi, Seyed Mohsen; Sookhak, Mehdi; Uysal, Elif; Chatzinotas, Symeon (2025-01-01) This study focuses on downlink transmissions of a low earth orbit (LEO) satellite, assisted by a beyond diagonal reconfigurable intelligent surface (BD-RIS) to serve ground terminals. Toward optimizing the performance of t...
Optimizing Peak Age under Intermittent Satellite Connectivity and Store-and-Forward Ari, Cagri; Kartal, Ozkan Tugberk; Munari, Andrea; Badia, Leonardo; Uysal, Elif; KAYA, ONUR (2025-01-01) We consider a real-time task-oriented application operating over an intermittently available satellite-based communication network, aiming to collect status updates generated by a remote sensing device. The system is model...
Duty Cycle Compatible Fresh Data Tranmission with LoRa LoRa ile G rev D ng s Kisitina Uyumlu Taze Veri Iletimi Metin, Mevlut; Ozcan, Sude; Yildirim, Ayse Betul; Alioğlu, Alper; Uysal, Elif; Erkun Osunluk, Ayca Hande (2025-01-01) Low Power Wide Area Networks (LPWANs) using the ISM band are constrained by serious duty-cycle limitations in Europe and in various other parts of the world. This constraint particularly limits the freshness of IoT data th...
A3L-FEC-FSFB: Age-Aware Application Layer Forward Error Correction with Fixed Sampling Rate and Fixed Block-length Baghaee, Sajjad; Uysal, Elif (2024-01-01) The concept of Age of Information (AoI) has emerged as a measure of data freshness in status-update-oriented applications. Enhancing AoI often involves unconventional networking strategies that adjust update transmission r...
Goal-Oriented Communications for Remote Inference under Two-Way Delay with Memory Ari, Cagri; Shisher, Md Kamran Chowdhury; Uysal, Elif; Sun, Yin (2024-01-01) We study the design of a goal-oriented sampling and scheduling strategy through a channel with highly variable two-way random delay, which can exhibit memory (e.g., Delay and Disruption Tolerant Networks). The objective of...

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