The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Fog Radio Access Network(F-RAN) is a promising technique for the fifth generation mobile communication system to provide high spectral and energy efficiency. In comparison with Cloud Radio Access Network, the Radio Units in F-RAN are equipped with local caches, which store popular content. In this paper, we investigate joint cooperative beamforming and radio units (RUs) operation in F-RAN system to...
The paper presents a QoS framework for terminals with multi-RAT (multiple radio access technologies) interfaces for heterogeneous network environment. It investigates a QoS provisioning with vertical multi-homing and multistreaming features for 5G heterogeneous networks. The presented enhanced framework for 5G systems leads to better performance opportunities for multimedia services with very high...
This paper proposes a model for radio resource management in virtualised radio access networks, based on the criterion of proportional fairness, which is also adapted to deal with the situations when there is not enough capacity to serve all subscribers with an acceptable level of service, the so-called the extreme case. A single virtual network operator providing four different classes of services...
Heterogeneous cloud radio access network (H-CRAN) is proposed as a cost-effective paradigm to meet the ever-increasing mobile data traffic demand, where the key idea is applying cloud computing technologies in a heterogeneous network (HetNet) to improve both spectral and energy efficiencies of the cellular system. In this paper, we investigate how to provide as many as possible users with QoS-guaranteed...
Recently, an evolution of the Cloud Radio Access Network (C-RAN) has been proposed, named as Fog Radio Access Network (F-RAN). Compared to C-RAN, the Radio Units (RUs) in F-CAN are equipped with local caches, which can store some frequently requested files. In the downlink, users requesting the same file form a multicast group, and are cooperatively served by a cluster of RUs. The requested file is...
Network slicing addresses the deployment of multiple logical networks as independent business operations on a common physical infrastructure. The concept has initially been proposed for the 5th Generation (5G) core network (CN) however, it has not been investigated yet what network slicing would represent to the design of the 5G radio access network (RAN). The paper explains how network slicing may...
Fog computing based radio access network is a promising paradigm for the fifth generation wireless communication system to provide high spectral and energy efficiency. With the help of the new designed fog computing based access points (F-APs), the user-centric objectives can be achieved through the adaptive technique and will relieve the load of fronthaul and alleviate the burden of base band unit...
Inspired by the idea of green and flexible access networks, the Cloud Radio Access Network (C-RAN) has been proposed by network operators together with infrastructure vendors as one promising 5G network architecture. In C-RAN, the light Remote Radio Heads (RRHs) installed with antennas are densely deployed and connected to the baseband unit (BBU) pool through fibers. Under dense C-RAN architecture...
Cloud Radio Access Network (C-RAN) offers an evolution in base stations architecture. The base station is broken down into a Base Band Unit (BBU) and a Remote Radio Head (RRH). While BBUs are pooled in a single geographical point, RRHs are distributed across multiple sites. In conventional architectures, a one-to-one logical mapping exists between BBUs and RRHs. One BBU is assigned to one RRH, so...
As the evolution of cloud radio access networks (CRANs), heterogeneous cloud radio access networks (H- CRANs) are now recognized as promising paradigm to achieve high spectral and energy efficiency through taking advantages of both heterogeneous networks and C- RANs. In H-CRANs, the heterogeneous processing node (HPN) guarantees the basic quality of service (QoS) requirement for the user equipment,...
In this paper we present and analyze link adaptation schemes that maximize the average throughput for two-hop relay network with single and multiple source terminals. The relay terminals are constrained by half-duplex assumption and a limit on the maximum total transmit power. We present two practical link adaptation schemes, asymmetric rate transmission (ART) for single-source and layered space-time...
Virtualization is seen as a killer application of software defined networking (SDN). Virtual radio access network (RAN) is an emerging concept for 5G and beyond 5G networks and it is gaining increased attention from both academia and industry alike. Moreover, due to the current telecommunication trend of increasing network traffic and decreasing revenue, telecom operators all over the world are looking...
Software-defined networking (SDN) has gained a tremendous attention in the recent years, both in academia and industry. This revolutionary networking paradigm is an attempt to bring the advances in computer science and software engineering into the information and communications technology (ICT) domain. The aim of these efforts is to pave the way for completely programmable networks and control-data...
Much work has been conducted to design effective and efficient algorithms for Quality of Service (QoS)-aware service selection algorithms in recent years. The wireless mobile computing and cloud computing environments have brought many challenges to QoS-aware service selection. Device-to-Device (D2D) communication and Cloud Radio Accessing Networks (C-RAN) are the new paradigm arising in recent years...
Multicast transmission and wireless caching are effective ways of reducing air and backhaul traffic load in wireless networks. This paper proposes to incorporate these two key ideas for content-centric transmission in a cloud radio access network (RAN) where multiple base stations (BSs) are connected to a central processor (CP) via finite-capacity backhaul links. Each BS has a cache with finite storage...
This paper proposes an efficient optimization algorithm to dynamically control the Evolved Packet System (EPS) bearer rates to transport various services between the UE and Evolved Packet Core (EPC) in a LTE Femtocell network scenario. The algorithm is focused on improving the accumulated QoE in the networks and takes joint consideration of limited radio and transport resource so as to leverage the...
Machine-type Communication (MTC) enables devices to exchange information in an autonomous way without human intervention. Hence, new applications can be developed benefiting from a richer awareness of the surrounding environment. However, the deployment of MTC over cellular networks creates new challenges to the contention-based Random Access (RA) procedure as well as to resource allocation for MTC...
Cell handover has been considered as one of the most challenging issues in LTE-A macro-femtocell networks, due to the ad hoc deployment nature of Femto Base Stations (FBSs). In this paper, our goal is to achieve seamless handover of Mobile Terminal (MT) among different cells while improving the system throughput. First, we formulate the handover decision and channel allocation problem as a Markov...
In this paper, a load-based joint call admission control (LJCAC) scheme for heterogeneous wireless networks is proposed. The LJCAC scheme aims to achieving the load balance in heterogeneous networks as well as guaranteeing the quality of service (QoS) satisfaction. We also develop the analytical models to calculate the connection-level performance of the proposed LJCAC scheme in two typical heterogeneous...
Mobile traffic is growing exponentially and various kinds of traffic are emerging. It is hard to support new communication mechanisms in current cellular networks due to their inflexibility. And since link capacities are fairly close to the Shannon limit, further improvements seem to be expensive and will provide limited gains. As a result, people are working on redesigning cellular networks with...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.