المؤلفون: David Martin-Sacristan, Jose F. Monserrat, Oscar Carrasco, Faiza Bouchmal

المصدر: IEEE Communications Standards Magazine. 4:30-36

مصطلحات موضوعية: Scheme (programming language), Interconnection, Computer Networks and Communications, business.industry, Computer science, Core network, Backward compatibility, Dual (category theory), Software deployment, Management of Technology and Innovation, Logic gate, Safety, Risk, Reliability and Quality, business, Law, computer, 5G, Computer network, computer.programming_language

الوصف: Dual connectivity was a scheme initially designed in Release 12 of the 3GPP LTE specifications to accommodate a user's interconnection with two cells at the same time, preferably in heterogeneous deployment scenarios. However, the desired non-standalone deployment of 5G technology has given new impetus to the concept of dual connectivity by extending its use to multiple radio technologies, and in particular, for connecting 5G cells to a 4G core network. This article analyzes in depth the Release 15 standard regarding dual connectivity and shows the possibilities that the use of small cell gateways acting as controllers can bring to the simplification of signaling procedures with forward and backward compatibility.

URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::1608ba0deba83e7edb4f35b44331750c
https://doi.org/10.1109/mcomstd.001.1800030

المؤلفون: Jose F. Monserrat, David Garcia-Roger, Chan Zhou, Apostolos Kousaridas, Sandra Roger, David Martin-Sacristan, Panagiotis Spapis

المصدر: IEEE Access, Vol 7, Pp 20484-20498 (2019)

مصطلحات موضوعية: Scheme (programming language), General Computer Science, Computer science, Distributed computing, Interface (computing), Reliability (computer networking), 02 engineering and technology, 0202 electrical engineering, electronic engineering, information engineering, General Materials Science, Use case, computer.programming_language, Multi-connectivity, business.industry, General Engineering, 020206 networking & telecommunications, 5G core, Transmission (telecommunications), Path (graph theory), V2X, sidelink, 020201 artificial intelligence & image processing, lcsh:Electrical engineering. Electronics. Nuclear engineering, Mobile telephony, business, lcsh:TK1-9971, computer, 5G

الوصف: Enhanced vehicle-to-everything (eV2X) communication is one of the most challenging use cases that the fifth generation (5G) of cellular mobile communications must address. In particular, eV2X includes some 5G vehicular applications targeting fully autonomous driving which require ultra-high reliability. The usual approach to providing vehicular communication based on single-connectivity transmission, for instance, through the direct link between vehicles (PC5 interface), often fails at guaranteeing the required reliability. To solve such a problem, in this paper, we consider a scheme where the radio path followed by eV2X messages can be proactively and dynamically configured to either transmit through a single interface (chosen between the PC5 and the Uu interface for infrastructure-based communication) or through both interfaces simultaneously, depending on the requirements and particular situation. After describing some path management general considerations, we propose a new network function and a procedure to enhance the current capabilities of the 3GPP 5G system. Next, we propose different architectures to support our proposal following the four 5G eV2X architectural options defined by the 3GPP. For each alternative, the necessary signaling for the dynamic configuration of the radio paths is detailed. Finally, an exemplary use case of our proposal is presented in detail to illustrate the feasibility of our proposed functional architectures, and, for that use case, system-level simulation results are provided to demonstrate the benefit achieved with dynamic path management.

URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65197db237765a7c439d467fd79f582f
https://doi.org/10.1109/access.2019.2897843