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

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...
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...
Ensuring a Semantically Effective IoT Network Through Blockchain with Delayed Feedback Gencay, Omer; Balci, Alperen; Ceran Arslan, Elif Tuğçe; Uysal, Elif (2024-01-01) In this paper, we propose a delay-tolerant blockchain-enabled low-power wide area network. We consider the scenario of a set of information sources (e.g. sensors, IoT nodes) equipped with transceivers, accessing a common g...
Implementation of an AoI-Aware Wi-Fi Network Bilgi Yaşına Duyarlı Wi-Fi Ağı Gerçeklemesi Balcı, Alperen; Saatçi, Batu; Atak, Emir; Uysal, Elif (2024-01-01) In this paper, a method to prioritize the transmissions by considering the Age Of Information (AoI) metric is presented in communication systems that are compatible with IEEE 802.11 standard. The proposed method includes L...
DCCTA: Age of Information in Slotted ALOHA Under Duty Cycle Constraints Yavascan, Orhan T.; Ahmetoglu, Mutlu; Uysal, Elif; Gurbuz, Umut; Gencay, Omer; Balci, Alperen (2024-01-01) Slotted ALOHA has been receiving renewed interest due to its suitability as a channel access scheme in low-overhead IoT and LP-WAN scenarios. Threshold ALOHA (TA) is a modification of slotted ALOHA where users only become ...
Resource Allocation in the Finite Blocklength Regime Under PAoI and Delay Violation Constraints Kartal, Özkan Tuğberk; KAYA, ONUR; Uysal, Elif (2023-12-22)
Pull or Wait: How to Optimize Query Age of Information Ildiz, M. Emrullah; Yavascan, Orhan T.; Uysal, Elif; Kartal, O. Tugberk (2023-01-01) We study a pull-based status update communication model where a source node submits update packets to a channel with random transmission delay, at times requested by a remote destination node. The objective is to minimize ...

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