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Current Distributed Radio Access Networks (DRANs), which are characterized by a static configuration and deployment of Base Stations (BSs), have exposed their limitations in handling the temporal and geographical fluctuations of capacity demands. At the same time, each BS's spectrum and computing resources are only used by the active users in the cell range, causing idle BSs in some areas/times and...
Cloud radio access network (C-RAN) is a persuasive solution to the burst capacity in future 5G mobile system and it can tackle the tidal effect in mobile networks for better resource utilization. We propose a remote radio head (RRH) protection scheme to assure the availability of the RRHs. A protection layer is proposed to support re-configurable protection of the RRHs, with good scalability.
The goals of 5G networks — low latency, high bandwidth, and support for fast mobility — are non-trivial and they demand improvements across all involved technology fields. Researchers are therefore exploring approaches that leverage on network function virtualization and software-defined networking for meeting the demands of verticals expected to use 5G networks. One approach which appears promising...
The concept of software-defined networking (SDN) is able to offer important advantages over the traditional communication paradigms. This is achieved by decoupling the decision-making process from the underlying network infrastructure that forwards the traffic. Recently, there have been efforts in applying the SDN approach to wireless and cellular networks. In fact, SDN is considered as one of the...
This position paper presents a new approach to infrastructure sharing for mobile networks based on the idea that network resources, both at the wireless access and the core network, can be traded dynamically on a real-time market where virtual operators or tenants compete to obtain the resources to serve their users. The negotiation procedure can be automated by allowing tenants to define their policies,...
Cloud radio access network (C-RAN) and mobile edge computing (MEC) have emerged as promising candidates for the next generation access network techniques. Unfortunately, although MEC tries to utilize the highly distributed computing resources in close proximity to user equipments equipments (UE), C-RAN suggests to centralize the baseband processing units (BBU) deployed in radio access networks. To...
Network virtualization facilitates radio access network (RAN) sharing by decoupling the physical network infrastructure from the wireless services. This paper considers a scenario in which a virtual network operator (VNO) leases wireless resources from a software-defined networking based virtualized RAN set up by a third-party infrastructure provider (InP). In order to optimize the revenue, the VNO...
In order to cope with the challenges of increasing user bandwidth demands as well as create new revenues by offering innovative services and applications, Mobile Network Operators (MNOs) are willing to increase their networks' capabilities by making it more flexible, programmable and agile. MNOs are also seeking new technologies to benefit from recent advances in cloud for rapid deployments and elastically...
Software defined networking (SDN) and network function virtualization (NFV) are the embraced technologies for the backhauling of future 5G networks. Virtual Machine (VM) and Docker container based deployments have received much attention. This paper presents the virtualization of a prototyped software defined radio access network (RAN) architecture by using VMs and Docker containers. In addition,...
The surge of mobile data traffic forces network operators to cope with capacity shortage. The deployment of small cells in 5G networks shall increase radio access capacity. Mobile edge computing technologies can be used to manage dedicated cache memory at the edge of mobile networks. As a result, data traffic can be confined within the radio access network thus reducing latency, round-trip time and...
The sharing of Radio Access Networks is gaining momentum in small cell scenarios, due to the associated reduction in capital and operational costs. In this scenario, the split of radio resources among tenants sharing the network becomes a fundamental problem to provide each one with its required capacity. In this respect, this paper proposes a multi-tenant admission control scheme for performing this...
Radio access network integrated with fiber-wireless-enabled multiple radio access technologies is envisioned for future heterogeneous wireless communications. Radio-over-fiber technology delivers wireless services with high capacity, high link speed, and low latency. Mobile backhaul, midhaul, and fronthaul as three fundamental methods supporting multiple radio access technologies are improved by fiber-wireless...
With ever increasing growth in the number of users accessing online videos through mobile phones and tablets, the online video traffic is also growing. In today's network environment, when a mobile user requests for online videos, it should be fetched from Content Delivery Network servers. The video has to pass through several gateways in the core network and base station in Radio Access Network before...
Recently, implementing Radio Access Network (RAN) functionality on cloud-based computing platform has become an emerging solution that leverages the many advantages of cloud infrastructure, such as shared computing resources and storage capacity, while lowering the operational cost. In this paper, we propose a novel caching framework aimed at fully exploiting the potential of such systems through...
Using Ethernet in the fronthaul can deliver the statistical multiplexing gains offered by the new functional splits proposed for the radio access network, but latency and delay variations are challenges that must be overcome.
Virtualization of network functions combined with the cloud paradigm enables the derealization of mobile network functionalities in data-centers (DC). Such virtualized mobile network functions (MNF) can be then provisioned dynamically and flexibly, leading to more scalable and cost-effective mobile services. Although advantageous, the provisioning of mobile network functions imposes a significant...
Cloud Radio Access Network (C-RAN) is a novel mobile network architecture which is deemed to be one of the most promising evolution trends towards future networks. The basic concept of cloud-RAN is to separate the digital baseband processing units (BBUs) of conventional cell sites, from the Radio Remote Heads (RRHs), and move them to the cloud (BBU pool) for centralized signal processing and management...
The radio access network (RAN) cooperative caching, which explores the scale effect through cooperative content sharing and caching among multiple RAN caches, is considered as one effective way to fully benefit from the RAN cache. In this paper, we study the feasibility and self-organizing algorithm for RAN cooperative caching. Specifically, we first analyze the real-world dataset of daily content...
The double-digit growth of the number of mobile broadband subscribers has led to the exponential growth of the mobile traffic in the last several years. A major part of the mobile traffic is the duplication of the downloading the popular contents. A cache-enabled mobile network in which the popular contents are replicated at the radio access network (RAN) helps to reduce the transit traffic on the...
Machine to Machine (M2M) systems are actively spreading, with mobile networks rapidly evolving to provide connectivity beyond smartphones and tablets. With billions of embedded devices expected to join cellular networks over the next few years, novel applications are emerging and contributing to the Internet of Things (IoT) paradigm. The new generation of mobile networks, the Long Term Evolution (LTE),...
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