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Department: search.filters.department.Department of Electrical and Electronics EngineeringSubject: search.filters.subject.Virtual reality

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    A receiver-driven multicast framework for 3DTV transmission
    (Institute of Electrical and Electronics Engineers (IEEE), 2005) N/A; N/A; Department of Electrical and Electronics Engineering; Department of Electrical and Electronics Engineering; Kurutepe, Engin; Civanlar, Mehmet Reha; Tekalp, Ahmet Murat; Master Student; Faculty Member; Faculty Member; Department of Electrical and Electronics Engineering; Graduate School of Sciences and Engineering; College of Engineering; College of Engineering; N/A; 16372; 26207
    Contemporary television and video experience is not interactive and mostly static. There is a demand for a real 3-D interactive experience which would allow users to view scenes through virtual cameras. Among other issues the amount of bandwidth required to transmit very large 3-D scene representations to end users is still an unsolved problem. In this paper we propose a novel networking scheme to enable users to automatically stream only the necessary parts of the 3-D representation to render the actual view. Our method also incorporates prediction of future views to prefetch streams which are likely to be needed in the near future as the view changes over time. / Güncel televizyon ve video deneyimi büyük ölçüde duruktur ve etkileşimli değildir. Ancak kullanıcıların sahneleri sanal kameralarla görmelerini sağlayacak gerçek 3-B etkileşimli deneyime ihtiyaç vardır. Çok büyük 3-B sahne gösterimlerinin son kullanıcılara iletimi için gerekli olan bant genişliği miktarı hala çözülememiş sorunlardan biridir. Biz bu makale ile kullanıcıların 3-B gösterimin sadece o andaki bakışlarını oluşturmak için gerekli olan kısımlarını duraksız iletim ile almalarını sağlayan bir ağ yöntemi öneriyoruz. Buna ek olarak kullanıcının bakışındaki değişikliklere göre gelecekte gerekli olabilecek veri katarlarını öngörerek alıp getirmeyi amaçlıyoruz.
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    Multi-party WebRTC as a managed service over multi-operator SDN
    (Springer Science and Business Media Deutschland GmbH, 2020) Department of Electrical and Electronics Engineering; N/A; Tekalp, Ahmet Murat; Kırmızıoğlu, Rıza Arda; Faculty Member; Master Student; Department of Electrical and Electronics Engineering; College of Engineering; Graduate School of Sciences and Engineering; 26207; N/A
    We propose a new WebRTC premium service API and a distributed E2E WebRTC service management framework to enable provisioning premium WebRTC services across multiple network service providers (NSP) with software defined network (SDN) infrastructure. The proposed architecture supports both two-party point-to-point (P2P) and multi-party videoconferencing (via a selective forwarding unit (SFU)) with end-to-end (E2E) quality of service (QoS) as a value-added service. Each NSP has full control of its own network resources. We propose a WebRTC service manager (WSM) that is hosted by each NSP. WSMs collaborate with each other in a distributed manner to orchestrate a network slice with specified bitrate and delay over the E2E path between two clients in P2P service and between sending clients and SFU and between the SFU and receiving clients in multi-party service without a need for a central inter-operator service orchestration authority. Clients support scalable VP9 video codec, which is configured according to agreed client upload and download bitrates. Our experimental results show that the proposed managed WebRTC service with guaranteed video quality across multiple NSPs provides lower delay and consumes less network resources compared to today’s best-effort WebRTC communications.