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Mobile Edge Computing (MEC) consists of deploying computing resources (CPU, storage) at the edge of mobile networks; typically near or with eNodeBs. Besides easing the deployment of applications and services requiring low access to the remote server, such as Virtual Reality and Vehicular IoT, MEC will enable the development of context-aware and context-optimized applications, thanks to the Radio API...
In the LTE EPC, many network entities and interfaces have to be maintained and updated regularly. Moreover, to accommodate more users, new hardware must be integrated, although rarely used. To address these challenges, the EPC can be moved to the cloud using two modern technologies: SDN and NFV. In this paper, we study the impact of integrating these novel technologies on LTE networks. We propose...
5G, fog computing and the majority of the latest technological trends have minimized latency as a top priority. These initiatives are focusing on physical layer methods to decrease latency, thus keeping the changes transparent to users. Physical layer changes are expensive and in many cases incompatible with the original solution which results in lower adoption rate and higher capital investment....
Active Antenna Systems (AAS) technology is one of several advanced features that enable a mobile network operator to cost-efficiently increase its network capacity to cope with the exponential mobile data traffic growth and the ever more demanding performance requirements. AAS can be exploited to perform e.g. Virtual Sectorisation (ViS), i.e. using beamforming to flexibly position a virtual small...
Uploading of huge files to cloud servers through mobile communication has been becoming more popular in recent years. However, current uploading throughput is frequently limited due to bottlenecks in server processing ability and/or narrow bandwidth sections of networks. For this study, we aimed to improve the user experience of uploading in future wireless access environments. We propose a novel...
With a boom in the usage of mobile devices for traffic-heavy applications, mobile networks struggle to deliver good performance while saving resources to support more users and save on costs. In this paper, we propose enhanced strategies for the preemptive migration of content stored in Information-Centric Networking caches at the edge of LTE mobile networks. With such strategies, the concept of content...
Dedicated public safety systems have been originally used to deliver the communications for public services such as police and fire departments. These systems are based on standards such as Terrestrial Trunked Radio (TETRA) which have been designed to meet specifically the requirements of public safety communications. However, with the emergence of new applications requiring mobile broadband capabilities,...
As the network is being evolved towards the content-centric network and the content itself is more focused rather than the host, a new paradigm called content-centric networking (CCN) is being considered for the Future Internet. Because the traffic in the Internet and wireless network has been increasing rapidly due to the continued proliferation of mobile devices, it is important to minimize the...
Recently, enormous growth of mobile data traffic can be load to operator's core network. Offloading traffic is a promising solution to alleviate the load. The 3GPP proposes the offloading solutions such as local IP access (LIPA) and selected IP traffic offload (SIPTO). Based on the LIPA/SIPTO, many relate works provides the offloading procedures and schemes but it doesn't take the network condition...
As the perpetually increasing demands of users for high speed, higher data rates over wide bandwidths, lower system latencies in mobile communications, LTE/LTE-Advanced as a 4th Generation of Wireless networks infrastructures widely deployed to provide better support for these requirements. Carrier Ag-gregation(CA) is an important technology for LTE-A providing enhancements to peak data rates, both...
Mobile operators are today facing the daunting challenge of providing cheap and valuable services to ever more demanding customers. As a matter of fact, mobile standards have not yet really addressed this expectation of open, cheap and flexible web oriented internet access. As an alternative, we introduced an IP-centric QoS model mainly inspired by IP policies commonly found in fixed networks. In...
The main aim of this research is to find out the technical causes of the degradation of LTE (Long Term Evolution) service using the band of 700MHz with the simulator ns-3. We analyze how the QoS (Quality of Service) parameters change when more devices are aggregated to the base station and the scheduler allocates radio resources for each user. In this scenario, the QoS depends on the type of CQI Feedback...
The mobile network plays an important role in the evolution of humanity and society. However, due to the increase of users as well as of mobile applications, the current mobile network architecture faces many challenges. In this paper we describe V-Core, a new architecture for the mobile packet core network which is based on Software Defined Networking and Network Function Virtualization. Then, we...
Researchers agree on a basic, general and abstract definition that mobile cloud computing is a combination of mobile and cloud computing. Nevertheless, the location of the computation power is still controversial and varies from centralized servers located somewhere in the internet to a collection of mobile devices interested in processing certain tasks. Interestingly, all mobile cloud architectures...
Many new applications, such as Mobile crowdsensing, burden mobile devices with heavy computation which severely affects the user's experience due to high battery consumption and delayed responses. Cloud computing was expected to solve heavy computation problems, so researchers tried to connect it to mobile networks, but always hindered by the expensive nature of mobile access networks from money,...
The on-demand connectivity service is one of the main requirements of the cellular data network. It consists in moving sessions transparently and temporarily from one network equipment to another without causing user session interruption. This service enables networks to cope with the ever-changing network condition such as sudden congestion or arbitrary network equipment failure. In this paper, we...
Small Cells are under extensive investigation as a potential solution to meet the increasing capacity demand due to ever growing data traffic over cellular networks. The architecture of small cells is still under discussion, various architectures have been proposed based on potential use cases. One of the most important use cases is to deploy small cells on a different frequency than that of the macro...
The demand of capacity in mobile communication is growing exponentially day-by-day, as the numbers of users have been increasing drastically. LTE and small cell network topologies are being hailed as the solution to this; however, the backhaul has become the real challenge. Operators have typically used different backhaul technologies for their radio access networks. Nevertheless, existing alternatives...
The authors give an overview on the state of the art of potential security issues that occur in the deployment of the LTE/SAE (Long-Term Evolution/System Architecture Evolution) protocol in emerging 4G wireless technologies. Although security concerns and challenges in wireless networks will remain a hot topic in the future, the LTE/SAE standard could adapt to these rising challenges, becoming more...
Positioning, being one of the main factors shaping services that deliver information to users based on their location, has experienced huge advancements over the past years. Today, the combination of device-centric positioning approaches, such as GPS, and device-assisted approaches, such as Cell-Id and WiFi positioning technologies, has proved to be very popular among mobile platforms. Nevertheless,...
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