Random Linear Network Coding for 5G Mobile Video Delivery

An exponential increase in mobile video delivery will continue with the demand for higher resolution, multi-view and large-scale multicast video services. Novel fifth generation (5G) 3GPP New Radio (NR) standard will bring a number of new opportunities for optimizing video delivery across both 5G core and radio access networks. One of the promising approaches for video quality adaptation, throughput enhancement and erasure protection is the use of packet-level random linear network coding (RLNC). In this review paper, we discuss the integration of RLNC into the 5G NR standard, building upon the ideas and opportunities identified in 4G LTE. We explicitly identify and discuss in detail novel 5G NR features that provide support for RLNC-based video delivery in 5G, thus pointing out to the promising avenues for future research.Comment: Invited paper for Special Issue "Network and Rateless Coding for Video Streaming" - MDPI Informatio

Proxy-based near real-time TV content transmission in mobility over 4G with MPEG-DASH transcoding on the cloud

[EN] This paper presents and evaluates a system that provides TV and radio services in mobility using 4G communications. The system has mainly two blocks, one on the cloud and another on the mobile vehicle. On the cloud, a DVB (Digital Video Broadcasting) receiver obtains the TV/radio signal and prepares the contents to be sent through 4G. Specifically, contents are transcoded and packetized using the DASH (Dynamic Adaptive Streaming over HTTP) standard. Vehicles in mobility use their 4G connectivity to receive the flows transmitted by the cloud. The key element of the system is an on-board proxy that manages the received flows and offers them to the final users in the vehicle. The proxy contains a buffer that helps reduce the number of interruptions caused by hand over effects and lack of coverage. The paper presents a comparison between a live transmission using 4G connecting the clients directly with the cloud server and a near real-time transmission based on an on-board proxy. Results prove that the use of the proxy reduces the number of interruptions considerably and, thus, improves the Quality of Experience of users at the expense of slightly increasing the delay.This work is supported by the Centro para el Desarrollo Tecnologico Industrial (CDTI) from the Government of Spain under the project "Plataforma avanzada de conectividad en movilidad" (CDTI IDI-20150126) and the project "Desarrollo de nueva plataforma de entretenimiento multimedia para entornos nauticos" (CDTI TIC-20170102).Arce Vila, P.; De Fez Lava, I.; Belda Ortega, R.; Guerri Cebollada, JC.; Ferrairó, S. (2019). Proxy-based near real-time TV content transmission in mobility over 4G with MPEG-DASH transcoding on the cloud. Multimedia Tools and Applications. 78(18):26399-26425. https://doi.org/10.1007/s11042-019-07840-6S2639926425781

EMB: Efficient Multimedia Broadcast in Multi-tier Mobile Networks

Multimedia broadcast and multicast services (MBMS) in mobile networks has been widely addressed, however an investigation of such a technology in emerging, multi-tier, scenarios is still lacking. Notably, user clustering and resource allocation are extremely challenging in multi-tier networks, and imperative to maximize system capacity and improve quality of user-experience (QoE) in MBMS. Thus, in this paper we propose a clustering and resource allocation approach, named EMB, which specifically addresses heterogeneous networks and accounts for the fact that multimedia content is adaptively encoded into scalable layers depending on the QoE requirements and channel conditions of the heterogeneous users. Importantly, we prove that our clustering algorithm yields Pareto efficient broadcasting areas, multimedia encoding parameters, and re- source allocation, in a way that is also fair to the users. Fur- thermore, numerical results obtained under realistic conditions and using real-world video content, show that the proposed EMB results in lower churn count (i.e., higher number of served users), higher throughput, and increased QoE, while using fewer network resources

Random Linear Network Coding for 5G Mobile Video Delivery

An exponential increase in mobile video delivery will continue with the demand for higher resolution, multi-view and large-scale multicast video services. Novel fifth generation (5G) 3GPP New Radio (NR) standard will bring a number of new opportunities for optimizing video delivery across both 5G core and radio access networks. One of the promising approaches for video quality adaptation, throughput enhancement and erasure protection is the use of packet-level random linear network coding (RLNC). In this review paper, we discuss the integration of RLNC into the 5G NR standard, building upon the ideas and opportunities identified in 4G LTE. We explicitly identify and discuss in detail novel 5G NR features that provide support for RLNC-based video delivery in 5G, thus pointing out to the promising avenues for future research

Τεχνοοικονομική μελέτη των ευκαιριών σύγκλισης της επίγειας ψηφιακής ραδιοτηλεοπτικής ευρυεκπομπής και των κινητών ευρυζωνικών δικτύων

Το κύριο μέσο διανομής του τηλεοπτικού προϊόντος στην Ευρώπη εξακολουθεί στις μέρες μας να είναι το επίγειο ψηφιακό δίκτυο ευρυεκπομπής (DTT), ενώ έπονται η δορυφορική και καλωδιακή πλατφόρμα με σημαντικά ποσοστά διείσδυσης. Αλλά αν ρωτηθεί κάποιος και δη ένας νέος πως προτιμά να παρακολουθεί τηλεόραση και να καταναλώνει βίντεο, πιθανότατα θα απαντήσει: «δεν ανοίγω καν την τηλεόραση αλλά θα το σκεφτόμουν να αγοράσω μια συνδρομητική υπηρεσία IPTV», «την αγαπημένη μου σειρά την είδα χθες στο tablet» (VoD, TV anytime), «όσο περίμενα στη στάση του λεωφορείου έριξα μια ματιά σε κάτι τρέιλερ στο Youtube από το κινητό μου» (ΟΤΤ, TV anywhere). Οι τάσεις τηλεθεάσεις αλλάζουν, οι δυνατότητες των δικτύων βελτιώνονται και η ζήτηση για ραδιοφάσμα διογκώνεται. Η συζήτηση περί συγκλινουσών τεχνολογιών που θα εξυπηρετούν αυτές τις απαιτήσεις υπό το πρίσμα της αποδοτικής διαχείρισης του ραδιοφάσματος και τη διαμόρφωση μιας ενιαίας ψηφιακής στρατηγικής σε επίπεδο Ε.Ε. είναι πιο επίκαιρη από ποτέ. Στόχος της διπλωματικής εργασίας είναι να αναδείξει και εξειδικεύσει τις νέες ανάγκες κατανάλωσης περιεχομένου βίντεο, να παρουσιάσει τις τεχνολογικές λύσεις που μπορούν να προσφέρουν τα δίκτυα με έμφαση κυρίως σε αυτά των κινητών επικοινωνιών και παράλληλα να αποτιμήσει το οικονομικό όφελος της μετάβασης σε ένα νέο οπτικοακουστικό μοντέλο όπου τα ενδιαφερόμενα μέρη (ραδιοτηλεοπτικοί φορείς, πάροχοι κινητών επικοινωνιών) θα έχουν σαφή επιχειρηματικά κίνητρα.The main means of distribution of the television product in Europe is still in our days the DTT network, followed by the satellite and cable platform with significant penetration rates. But if someone is asked, especially a younger person, how he prefers to watch television and consume video, in all likelihood, he will answer: “I don’t even watch television but I will consider purchase an IPTV subscription service”, “I watched my favorite series yesterday on my tablet” (VoD, TV anytime), “While I was waiting at the bus stop I took a look at some trailers on Youtube from my smartphone” (OTT, TV anywhere). Viewing trends are changing, the capabilities of the networks are improving and the demand for more spectrum is growing. The discussion about converging technologies which will serve these requirements in the light of efficient spectrum management and the development of a single digital strategy at EU level is more timely than ever. The aim of the Master’s thesis is to highlight and specify the new needs for video content consumption, to present the technological solutions that networks can offer with a focus on mobile communications, while at the same time to assess the economic benefit of switching to a new audiovisual model where the stakeholders (broadcasters, mobile operators) will have clear business incentives