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This paper presents the description of several key RAN enablers for the radio resource management (RRM) framework of the fifth generation (5G) radio access network (RAN), referred to as building blocks of the 5G RRM. In particular, the following key RAN enablers are discussed: i) interference management techniques for dense and dynamic deployments, focusing on cell-edge performance enhancement; ii)...
In this paper we consider transmit beamforming schemes for downlink control channel. In particular, we propose exploiting information on user location for selecting both the serving transmission/reception point (TRP) and transmit beam used for control channel transmissions. Moreover, a suppressed zero-forcing (SZF) scheme based on vertically and horizontally polarized transmit beams is proposed with...
Service interruptions from mobility events, such as handovers and connection failures, are some of the major impairments for fulfilling the ultra-reliability requirements in fifth Generation (5G) mobile networks. One of the solutions to tackle the aforementioned challenges is multi-connectivity with Single Frequency Network (SFN) transmission, which refers to noncoherent joint transmission of a signal...
We argue for a new method that applies to on-demand system information (SI) broadcast transmissions. The proposed method is targeted for 5G networks, and is based upon utilizing a cut-off value for the modulation and coding scheme used for broadcasting. Two variants of the proposed scheme are presented, namely the reactive and proactive method, depending on whether the user equipment requests an additional...
This paper presents the design foundations of an agile resource management (RM) framework for the fifth generation (5G) radio access network (RAN) by describing essential building blocks (BBs). Overall, the presented RM framework provides holistic RM solutions that consider and exploit the novel aspects of 5G systems, such as, diverse service requirements, co-existence of multiple air interface (AI)...
Wireless networks have gone through several years of evolution until now and will continue to do so in order to cater for the varying needs of users. These demands are expected to grow in the future, both in size and variability. Hence, the 5G technology considers these variabilities in service demands and potential data explosion which could accompany users' demands at the core of its architecture...
The discussion around Network Slicing for 5G Systems is slowly converging to concrete solutions which will be adopted in the early deployment of 5G Networks due by 2020. In particular, within 3GPP standardization body, study items recently completed have finalized the definition of 5G System architecture, comprising Access and Core Networks, and defined the key design principles for End to End Network...
Nowadays, network and telecommunication operators require flexible and dynamic models to deploy new services in a fast, reliable and cost saving way. The Service Function Chaining (SFC) design is particularly suited to meet such needs, especially in conjunction with the Network Function Virtualization (NFV) paradigm that adds a noteworthy elasticity during the SFC deployment phase. Accordingly, SFC...
Edge computing is a novel computing paradigm in which the edge nodes of Internet of Things (IoT) are heavily involved in data processing. Resource Description Framework (RDF) plays an important role in Semantic Web due to the explosive growth of data of IoT. RDF is a graph-based data model employed for representing the Uniform Resource Identifiers (URIs), and SPARQL is the standard query language...
This paper presents the vision of 5G-MiEdge, a research project leveraging the benefits of merging MEC and mmWave technologies. Based on that vision, the most relevant use cases and services for the forthcoming Tokyo 2020 Olympics are proposed. The focus is on showing how integrating MEC and mmWave into the 5G network architecture can offer a much more effective system. That is achieved by means of...
In 3GPP Rel-13, a narrowband system, named Narrowband Internet of Things (NB-IoT), has been introduced to provide low-cost, low-power, wide-area cellular connectivity for the Internet of Things. Further enhancements have been made to this system in subsequent 3GPP releases. In this paper, we describe Rel-14 enhancements that have been standardized for NB-IoT. They include positioning support, multicast...
Next generation cellular networks (5G) have to deal with deployment of massive machine-type-communication (MTC) devices as the internet of things (IoT) becomes pervasive. To cater to such demand, 3GPP has finalized specifications for enhanced machine type communication (eMTC) and narrowband IoT (NB-IoT) as part of LTE Release 131. To avoid resource congestion to legacy users, eMTC communication can...
The high risk of random access collisions leads to huge challenge for the deployment massive Machine-Type Communications (mMTC), which cannot be sufficiently overcome by current solutions in LTE/LTE-A networks such as the extended access barring (EAB) scheme. The recently studied approaches of grouped random access have shown a great potential in simultaneously reducing the collision rate and the...
Proliferation of mobile terminals pushes the limits of scalability, capacity and coverage to unremittingly sustain V2X services. Massive machine type communication has the potential to ensure the autonomous sustainability of stream QoS. Catering for diversified packet-based traffic flows in a ubiquitous framework dictates the inline evaluation of the queue status, a complex and arduous task for scalable...
Virtual cell (VC) is an emergent concept in cellular networks that shifts the base-station-centric point of view to a user-centric one. Instead of traditional base station assignment, VCs contain a number of transmission points with an association pattern that is created for, and moves with, every user in the network. This study targets VCs for vehicle-to-everything (V2X) communications, where V2X...
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