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Innovative mobile applications bring radical changes to people's life around the globe. With its unique characteristics of anywhere, anytime accessibility, thousands of mobile apps are developed, distributed, and executed over the Internet. To understand the selection criteria for different end users when facing a mobile application, this paper quests for an evaluation framework for mobile apps based...
Network operators and equipment vendors can hesitate to deploy network protocol innovations in fear of breaking connectivity for end users. To assess the potential for evolution of the protocol stack, it is important to know the existing network impairments and opportunities to work around the impairments. While classical network measurement tools often focus on absolute performance values, PATHspider...
Mobile Broadband (MBB) access networks are becoming more and more used worldwide, and the devices adopted to access them are increasing in number and complexity (smartphones, mobile hotspots, vehicular infotainment systems). The highly dynamic nature of such scenarios calls for continuous monitoring and measurement of the network, and possibly cross-layer management of network applications. A recent...
In recent years, mobile data gathering in wireless sensor networks has attracted much interests in the research community. However, despite extensive efforts, many of previous work in this area lies only in theory and evaluates network performance with computer simulations, which leaves a large gap from reality. In this paper, we present the design and implementation of a general purpose, flexible...
Software Defined Network (SDN) is an advanced approach to designing dynamic, manageable, cost-effective, and adaptable network architectures. SDN will play a key role as an enabler for 5G and future networks. Transferring network monitoring functions to a software entity working in conjunction with configurable hardware accelerators through a scheme called Software Defined Monitoring (SDM) is one...
As mobile computing platforms, head-mounted displays (HMDs) for augmented reality (AR) applications, similar to other mobile computing platforms, face challenges in minimizing their energy usage. While not yet as pervasive as smartphones, we can envision that more useful everyday AR applications can arise as we allow HMDs to enjoy longer operation times. This work takes a first step in designing an...
Software-Defined Storage (SDS) concept has recently emerged as a new technology inside data centers. It can provide high availability, manageability, performance and cost benefits to both data center owners, application developers and subscribers including Mobile Network Operators (MNO) or Mobile Virtual Network Operators (MVNO). In this paper, based on the assumption that MNOs are competing to access...
Influence maximization refers to the number of influenced nodes reach to maximum by finding a set of seed nodes in social network. Due to peoples' excessive concentration of attention, sometimes, negative effects will appear during the influence propagation. However, the negative effects on influence propagation are not involved in the existing research work. In this paper, we consider the influence...
The article touches aspects of security in Wireless Sensor Networks. It begins with a review and classification of existing types of threats and protection methods. The main part of the paper presents the results obtained during development of a threat detection system for WSN network. The described approach is based on a mobile platform which allows separation of security mechanisms and the software...
With an increase in the number of mobile users and traffic, mobile network operators are finding it difficult to scale their radio and core networks. Further, hardware network appliances are expensive to procure and upgrade, and are difficult to adapt and program for new services. These trends have recently spurred several efforts to redesign various components of mobile networks, including the LTE...
This paper investigates the adaptive barrier coverage system in wireless sensor networks, where multiple mobile sensor nodes collaboratively move based on cloud computing. This system aims to adaptively maintain a barrier coverage surrounding a dynamic zone, such as nuclear leakage area and toxic gas area. Since such a zone is usually dangerous and invisible, it is necessary to monitor and track its...
Mobile Operators are looking for new ways to cope with ever-increasing data traffic while improving the operational and capital efficiency of their networks. Cloud computing and network function virtualization (NFV) have emerged as key enablers to optimize resource utilization and at the same time reduce network operational expenditure (OPEX). In virtualized networks, network functions are delivered...
To ensure the required quality of experience and optimal use of network operator's resources in the current conditions telecommunication operator can deploy services using the concept of Network Functions Virtualization (NFV), that has fundamental differences from traditional dedicated hardware. To achieve the expected benefits of NFV, physical resources must be used effectively. This requires effective...
With the rapid increasing number of mobile devices being used as essential terminals or platforms for communication, security threats now target the whole telecommunication infrastructure. However, most of the software-based passive measurement system (PMS) could not achieve high performance to adapt the high-bandwidth mobile network. In this paper, we propose NTW, a real-time pre-processing system...
Software Defined Networking (SDN) has attracted tremendous interest in the telecommunication industry due to its ability to abstract, manage and dynamically re-configure end-to-end networks from a centralized controller. Though SDN is considered to be a suitable candidate for various use cases in mobile networks, none of the work so far has discussed its advantages and actual realization for Train-to-Wayside...
Traditional cellular networks are forced to remain active regardless of the actual amount of traffic that is currently produced/requested, with a clear waste of energy. Two-layer mobile networks with separated signalling and data layers have been recently proposed for energy savings in future implementations. These networks are able to switch off unneeded data cells completely while maintaining full...
We present the development and testing of a cellular network built on open source technologies. This network supports voice calls and text messages within the network or between networks. The main objective of this work is to develop a stand-alone mobile network consisting of one base station and a switch, the access to which can be controlled as required. The mobile network is also connected to public...
Network Function Virtualization (NFV) is set to disrupt the current networking ecosystem by turning vertically-integrated middleboxes into software modules running on general purpose virtualized platforms. NFV will play a key role in future wireless and mobile networks where significant cost reductions can be obtained by virtualizing different layers and functions of the radio access and core network...
We report on a case study on model based testingfor a commercially available telecom software system. A mainpurpose is to investigate how different strategies for test suitegeneration affect quality attributes of the generated test suites, in a realistic industrial environment. We develop a functionalmodel in the form of an extended finite state machine, from whichwe generate test suites using several...
This paper focuses on the compliance of publicly available specifications of Global System for Mobile communication (GSM) with the extremely closed GSM industry with the help of RTL-SDR, GNU Radio and Wireshark. GNU Radio is a free and open software which enables the translation of real-world systems to programmable flow graphs. GSM, together with other technologies, is part of the evolution of wireless...
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