Next Generation Network Environment Research Articles

A Traffic Type-Based Differentiated Reputation Algorithm for Radio Resource Allocation During Multi-Service Content Delivery in 5G Heterogeneous Scenarios

The next-generation network environment is expected to include the networks of diverse types, associated with heterogeneous performance. At the same time, this heterogeneous network environment will be used to deliver various services with different requirements. In order to support high quality of experience for the users' availing from these services, there is a need for a solution to the complex problem of selecting the appropriate network support for each user service type. This paper introduces the network Traffic tYpe-based DifferEntiated Reputation (TYDER) solution, which differentiates the data delivery process according to its type. TYDER considers network reputation in the context of traffic type requirements in order to increase the delivery performance for the data exchanged. The Comparative testing involving four traffic categories, including video, gaming, browsing, and the Internet of Things, showed how TYDER outperforms a classic solution in terms of major performance metrics.

Integrated acceptance and sustainability evaluation of Internet of Medical Things

PurposeThe purpose of this paper is to conduct a dual-level (organizational and individual user) analysis of development related to the Internet of Medical Things (IoMT). It examines the organizational dynamics of IoMT and develops a conceptual model for quality of experience (QoE) in user acceptance.Design/methodology/approachThis study uses the information systems success model of quality factor as an analytical framework and extends it beyond the individual user experience (UX) to include an organization-level perspective. Interviews are conducted with relevant stakeholders for sociotechnical inquiries; a survey identifies user factors in IoMT.FindingsThe sociotechnical analysis sheds light on how IoMT has been accepted and stabilized in the healthcare sector. It shows the complex interaction between the social and technical aspects of IoMT by highlighting the co-evolution, interaction, and interface of devices that constitute the next-generation network environment. The UX model conceptualizes QoE specific to medical informatics.Research limitations/implicationsGiven the sociotechnical nature of this investigation, another approach to adoption of IoMT innovations was worth investigating to determine effective integration.Practical implicationsIoMT needs to be meaningful if they are to be sustainable and they need to offer quality of services and QoE no matter the location or demographic in which they are used.Originality/valueWith a dual-level analysis, the study provides a comprehensive view of the IoMT development process by investigating the organizational dynamics, in addition to the UX, of IoMT. The results provide a basis for developing future IoMT services with QoE requirements, as well as for clarifying sociotechnical dynamics.

Design and performance analysis of a cost-effective proxy-LMA mobility management scheme in IP-based mobile networks with global mobility support

Interlocking with a heterogeneous network is important because mobile users (MUs) who navigate on next-generation (NG) wireless networks want to be provided with undisrupted network services. Unfortunately, there have been few studies on methods of guaranteeing global mobility. To enhance global mobility and interoperability within the NG network environment, in this paper, we propose a proxy-local mobility anchor (Proxy-LMA) system, a mobile IP-based global inter-networking system. The purpose of the proposed Proxy-LMA system is to expand the boundary of mobility with respect to the existing mobility management protocols (PMIPv6 and MIPv6), in order to guarantee global mobility and interoperability within a heterogeneous network environment. The results revealed that the proposed Proxy-LMA system was more efficient than the other methods in terms of the signal cost and delay in a heterogeneous network environment such as wireless sensor networks.

Analyzing the development of 4th generation mobile network in China: actor network theory perspective

Purpose – This paper aims to provide an in-depth analysis of the process of standards setting based on the case of long-term evolution time division duplex (LTE TDD) deployment in China. Design/methodology/approach – Using actor-network theory (ANT) as a theoretical framework, multi-level analyses are presented to explain the process of adoption of LTE TDD at a global level. Findings – Findings identified the complex interaction between the social and technical aspects of fourth-generation (4G) by highlighting the co-evolving nature, diversity and interface that constitute the next-generation network environment. Research limitations/implications – ANT provides a framework of ideas for describing the process of technology adoption and for developing stories that explain it. Originality/value – The findings shed light on a critical insight of the interrelationships between TD-SCDMA and LTE TDD and identify the policy successes and failures of 4G mobile networks.

Automated Service Management for Semantic IP Multimedia System [S-IMS

Next Generation Network (NGN) has drawn great attention by the researchers and telecommunication industries as the future generation in the communication technologies and services. The interest covers all aspects on NGN from the global standards, architecture and services. The management of services provided in the NGN environment has posed great challenges due to the heterogeneity of the service protocols, service requirements and specifications and service functionalities. The research proposes enhancement of the automated service management through embedding the semantic service descriptions that can be referenced to the service ontology for service creation and management into the Next Generation Network, which will become Semantic Next Generation Network (SNGN).

Quality of Service and security negotiation for autonomous management of Next Generation Networks

Based on the IP technology, the next generation networks (NGN) must overcome the main drawbacks of this technology consisting in the lack of quality of service (QoS), security and mobility management. To ensure a service offer in an NGN environment, a protocol for negotiating a service level can be used. However, most of the existing negotiation protocols allow the establishment of a service level which includes only QoS. As for security and mobility, they were often not covered by these negotiations, and therefore managed independently. However, securing a service can cause degradation of the QoS, and the mobility of a user can change the service needs in terms of QoS and security. Thus, we need to simultaneously manage QoS and security while taking into account user’s mobility. In this

NGN 기반환경 에서의 VoIP QoS 관리체계 모델 설계

QoS(Quality of Service) is defined as collective effect of performance which determines the degree of satisfaction of a user of the service by ITU-T Rec. E.800. While the use of VoIP(Voice Over Internet Protocol) has been widely implemented, persistent problems with QoS are a very important sue which needs to be solved. This research is finding the assignment of VoIP QoS to deduct how to manage the control system and presenting the QoS control process and framework under NGN(Next Generation Network) environment. The trial framework is the modeling of the QoS measurement metrics, instrument, equipment, method of measurement, the series of cycle & the methodology about analysis of the result of measurement. This research underlines that the vulnerability of the VoIP protocol in relation to its QoS can be guaranteed when the product quality and management are controlled and measured systematically. Especially it`s very important time to maintain the research about VoIP QoS measurement and control because the big conversion of new network technology paradigm is now spreading. In addition, when the proposed method is applied, it can reduce an overall delay and can contribute to improved quality, in relation to signal, voice processing, filtering more effectively.

A low distortion image enhancement scheme based on multi-resolutions analysis in next generation network

With the advent of Next Generation Network (NGN), services that are currently provided by multiple specific network-centric architectures. NGN provides AAA (Anytime, Anywhere and Always on) access to users from different service providers with consistent and ubiquitous provision of services as necessary. This special issue of NGN includes pervasive, grid, and peer-to-peer computing to provide computing and communication services at anytime and anywhere. In fact, the application of NGN includes digital image processing, multimedia systems/services, and so on. Here we focus on the digital image processing technology in NGN environments. Low-contrast structure and heavy noise in NGN environments can be found in many kinds of digital images, which makes the images vague and uncertainly, especially in x-ray images. As result, some useful tiny characteristic are weakened--which are difficult to distinguish even by naked eyes. Based on the combination of no-linear grad-contrast operator and multi-resolution wavelet analysis, a kind of image enhancement processing algorithm for useful tiny characters is presented. The algorithm can enhance the tiny characters while confine amplifying noise. The analysis of the results shows that local regions of the image are enhanced by using the concept of the grad contrast to make image clearer adaptively. Experiments were conducted on real pictures, and the results show that the algorithm is flexible and convenient.

Enhancing QoS and QoE in IMS enabled Next Generation Networks

Managing network complexity, accommodating greater numbers of subscribers, improving coverage to support data services (e.g. email, video, and music downloads), keeping up to speed with fast-changing technology, and driving maximum value from existing networks - all while reducing CapEX and OpEX and ensuring Quality of Service (QoS) for the network and Quality of Experience (QoE) for the user. These are just some of the pressing business issues faced by mobileservice providers, summarized by the demand to "achieve more, for less." The ultimate goal of optimization techniques at the network and application layer is to ensure End-user perceived QoS. The next generation networks (NGN), a composite environment of proven telecommunications and Internet-oriented mechanisms have become generally recognized as the telecommunications environment of the future. However, the nature of the NGN environment presents several complex issues regarding quality assurance that have not existed in the legacy environments (e.g., multi-network, multi-vendor, and multi-operator IP-based telecommunications environment, distributed intelligence, third-party provisioning, fixed-wireless and mobile access, etc.). In this Research Paper, a service aware policy-based approach to NGN quality assurance is presented, taking into account both perceptual quality of experience and technologydependant quality of service issues. The respective procedures, entities, mechanisms, and profiles are discussed. The purpose of the presented approach is in research, development, and discussion of pursuing the end-to-end controllability of the quality of the multimedia NGN-based communications in an environment that is best effort in its nature and promotes end user's access agnosticism, service agility, and global mobility.

Socio-Technical Dynamics in the Development of Next Generation Mobile Network: Translation Beyond 3G

This paper traces the translation processes associated with the mobilization of resources and industrial agency in the development of a next generation mobile network in Korea. To explain the socio-technical dynamics, the sociology of translation is used. The paper provides a story of a translation of strategy and related activities using Callon's four moments of translation. The story illustrates how, during the translation process, 4G strategies have been formed, shaped, and enhanced. It describes the process of technology adoption and developing stories by highlighting the co-evolving nature, diversity, and interface which constitute the next-generation network environment. It provides insight into the Korean mobile environment by offering a socio-technical analysis of 4G development and how it involves the dynamics of industry, regulation, and technology. The study suggests that the sociology of translation may be a promising explication of technological change and innovation.

Challenges and drivers in the 4G evolution in Korea

This study presents a case analysis of a socio-technical framework used to assess the development of 4th generation mobile technology in Korea. Using Actor Network Theory (ANT), this study develops a rich understanding of how 4G will evolve and stabilise in next-generation network environments. ANT provides a framework of ideas for describing the process of technology adoption and for developing stories that explain it. An interpretive case study investigates the complex interaction between the social and technical aspects of 4G by highlighting the co-evolving nature, diversity, and interface that constitute the next-generation network environment. It provides insight into the Korean mobile environment by offering a socio-technical analysis of 4G development and how it involves the dynamics of industry, regulation, and technology. The use of ANT as a framework of analysis reveals a unique set of socio-technical problems, challenges, and opportunities in 4G technology.

Functional Architecture for NGN-Based Personalized IPTV Services

IPTV is one of the most highly visible services to emerge as part of the development of next generation network (NGN). IPTV services over manageable broadband link from a provider will be one of the ultimate goals of the broadband revolution using NGN. In this paper, we analyze IPTV architecture developed by ITU-T and provide functional architecture for NGN-based IPTV services according to functional mapping between IPTV and NGN. For this, we provide the detailed functional architecture and relevant operations with other functional blocks and present the harmonized architecture between IPTV and NGN for NGN-based IPTV services with the alignment with existing NGN architecture. As challenging architectural issues, we also introduce personalized IPTV services based on Web-based open platform in NGN environment and illustrate functional architecture and service examples for Web-based personalized IPTV services.

Objective Speech Quality Assessment Based on Payload Discrimination of Lost Packets for Cellular Phones in NGN Environment

A feature of services provided in a Next Generation Network (NGN) is that the end-to-end quality is guaranteed. This is quite a challenging issue, given the considerable fluctuation in network conditions within a Fixed Mobile Convergence (FMC) network. Therefore, a novel approach, whereby a network node and a mobile terminal such as a cellular phone cooperate with each other to control service quality is essential. In order to achieve such cooperation, the mobile terminal needs to become more intelligent so it can estimate the service quality, including the user's perceptual quality, and notify the measurement result to the network node. Subsequently, the network node implements some kind of service control function, such as a resource and admission control function, based on the notification from the mobile terminal. In this paper, the role of the mobile terminal in such collaborative system is focused on. As a part of a QoS/QoE measurement system, we describe an objective speech quality assessment with payload discrimination of lost packets to measure the user's perceptual quality of VoIP. The proposed assessment is so simple that it can be implemented on a cellular phone. We therefore did this as part of the QoS/QoE measurement system. By using the implemented system, we can measure the user's perceptual quality of VoIP as well as the network QoS metrics, in terms of criteria such as packet loss rate, jitter and burstiness in real time.

NGA, IP-Interconnection and Their Impact on Business Models and Competition

Developments towards Next Generation Networks (NGN) have a strong impact on the design of the markets for electronic communications in general, but specifically on intercarrier relations with respect to interconnection and access. Due to the fact that competition in the European telecommunications environment has brought about alternative providers and their business models it is an interesting area to investigate how these business models will develop in an NGN environment and which (additional) business models may emerge in the future. To that end, the current paper looks at the development of different business models in the PSTN world and likely developments in the NGN world. This leads to conclusions with respect to requirements of the future regulatory framework of next generation networks in order to maintain the achievements of competition in the telecommunications area.

Universal service in an IP‐enabled NGN environment

PurposeThe purpose of this paper is to identify concerns developing in regard to current approaches used to define, deliver and fund universal service obligations (USOs) for telecommunications due to developments in competition, new technology, e.g. wireless, convergence and next generation networks (NGN), including voice over internet protocol (VoIP). To stimulate thinking about the policies required to deliver USOs in an IP‐enabled NGN environment.Design/methodology/approachThe paper examines the nature and scope of USOs, including the concept of “functional internet access” to address questions about whether in an NGN environment: present USOs are sustainable; USOs need to change; and whether USOs should include access to broadband? The paper also examines alternative/complementary sources of funding for USOs.FindingsWith falling revenue (due to increasing competition and declining prices) occurring alongside strong demand for funds to deploy NGN, telecommunications operators are less able to provide USOs sustained by cross‐subsidisation. Universal service funds, too, may be under pressure. Also there is likely to be an uneven migration to NGN since it is likely that NGN will be deployed first in more profitable, densely populated areas and then only later (if at all) in relatively less commercially viable rural/remote areas. The paper concludes that present USOs can be maintained in an NGN environment. It concludes that since USOs is an evolving concept, there should be regular systematic reviews of whether USOs should be extended to include broadband. The paper concludes that increased funding from general taxation revenue is warranted and would link decisions concerning the nature and scope of USOs more closely with financial responsibility for such decisions.Originality/valueThe paper stimulates rethinking about whether, and if so how, arrangements relating to USOs need to change? In adopting a longer term perspective of universal services, the paper may be a valuable complement to the reviews of USOs being conducted in various countries (since short term decisions should be consistent with longer term developments).

A self-adaptive service provisioning framework for 3G+/4G mobile applications

In light of the increasing acceptance of the notion of next generation networks (NGN), which results from the convergence of the fixed and mobile telecommunications, Internet, and entertainment sectors, there is a need for the realization of next-generation service delivery platforms to allow seamless and adaptive provisioning of multimedia information and communication services to mobile users. This means that in such an NGN environment different end systems, access networks, and service platforms have to be integrated. For this highly heterogeneous communications and services environment, we propose a self-adaptive service provisioning middleware framework (ASPF), which, by interoperating with existing wireless and wireline service delivery platforms, aims to enable seamless omnipresent service provisioning to mobile users anywhere, anytime, and in any context. The ASPF is intended to "liberate" applications from space and time limitations, networks, platforms, and device dependences, minimize time-to-market constraints, and eliminate major hurdles that hinder the rapid deployment of new mobile services and applications. Key to this goal is interworking/integration with current SDPs, such as IN/CAMEL, OSA/Parlay, and the emerging IMS.