Akademik Veri Yönetim Sistemi
Tezin Türü: Yüksek Lisans
Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Mühendislik Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümü, Türkiye
Tezin Onay Tarihi: 2019
Öğrenci: Doğa Can Atabay
Danışman: ELİF UYSAL
Özet:The conventional network performance metrics such as throughput and delay do not accurately reflect the needs of some applications. Age of information (AoI) is a newly proposed metric that indicates the freshness of information from the receiver’s perspective. In this work, a network of multiple transmitter devices continuously updating a central station over an error-free multiaccess channel is studied. The average AoI expressions are derived for Round-Robin, Slotted ALOHA, and a proposed random access strategy called LAZY. Optimal transmission rates are found for the two source network case with different threshold parameters under LAZY. It is proven that for the two source network, LAZY performs significantly better in terms of data freshness compared to the Slotted ALOHA due to the utilization of the instantaneous AoI knowledge of the sources.