NGN architecture: generic principles, functional architecture, and implementation

Knightson, Keith; Morita, Naotaka; Towle, Thomas T.

doi:10.1109/mcom.2005.1522124

Cited by 168 publications

(80 citation statements)

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“…DONA proposes that names handle persistence and authenticity, while name resolution handles availability. There are other attempts to approach the problem from enterprise perspective through Application Oriented Network Architecture (AON) [27], borrowing ideas from NGN architecture [28].…”

Section: Existing Approachesmentioning

confidence: 99%

Fifth Generation Networking Principles for a Service Driven Future Internet Architecture

Kumar

2010

Wireless Pers Commun

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The vision of all-IP networks where IP forms the simple common layer understandable across the whole network has undeniable advantages. However, such simplicity comes as a major hurdle to flexibility and functionality to the architecture. This is evident from the increasingly numerous and complex engineering solutions and optimizations required to accommodate essential qualities like mobility, security, realtime communication support etc or to mitigate the shortcomings inherent in the 'traditional Internet' architecture. While a clean slate approach to address these shortcomings is not an option in a realistic scenario, it is important to examine the architecture as a whole to address emerging network requirements and overcome existing shortcomings at the architecture level rather than engineering solutions to an existing inefficient one. This architectural re-examination should also facilitate discussion into what design principles for future generations of Network Architectures which will eventually replace the design tenets for the current Internet. While 3G and 4G systems were more focussed on convergence towards an All-IP network and some improvements in the core network, the architectural design remains stagnant with layered paradigms and inherent inefficiencies. A departure from this shackled approach could be the distinguishing feature of 5G systems and beyond. We claim that there is a pressing need to move towards a Next Generation Network architecture built to natively support requirements such as network resource abstraction, mobility, security, enhanced routing, privacy, context communications, QoS, parallel processing, heterogeneous networking etc. Instead of treating the network as just providing connectivity specified by endpoints, it is of great advantage to applications to recognise it as a service characterized by attributes, abstracted to a higher level to represent a collection of capabilities that the network offers. This uniform high level abstraction can effectively mask the heterogeneity and implementation discrepancies in the underlying infrastructure. Besides, in a network environment where an connectivity instance might transverse diverse business/ownership/capability domains, the approach proposed in this article can provide a transparent abstraction for resource negotiations across the domain to be available for end-to-end setup. This architectural change should also be manifested R. Kumar (B) Faculty of Science and Engineering, University of Agder, Grimstad, Norway e-mail: ram.kumar@uia.no 123 394 R. Kumar according to the principles of SOA to ensure interoperability, backwards compatibility and migration. In this article, we introduce a Service Oriented framework and network architecture aimed at tackling the heterogeneity of emerging requirements and proposed solutions into a coherent interoperable architecture using Web Services specifications as the basic standards. We propose to model the new architecture on relationships between entities and discuss the motivation this...

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Section: Existing Approachesmentioning

confidence: 99%

Fifth Generation Networking Principles for a Service Driven Future Internet Architecture

Kumar

2010

Wireless Pers Commun

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“…It is expected to integrate services offered by traditional networks and new innovative IP services into a single service platform. The key foundation of the NGN is the separation of services and transport networks, which provides QoSenabled transport technologies and service-related functions independent from underlying transport technologies [36]. The transport functions provide transfer of information between peer entities; the services functions are concerned with the applications and services to be operated between peer entities [37].…”

Section: Definition Of Ngnmentioning

confidence: 99%

“…The transport stratum functions provide connectivity for all components and physically separated functions within the NGN. The service stratum functions provide session-based and non-session-based services, including subscribe/notify for presence information and a messaging method for instant message exchange [36]. End-user functions are connected to the NGN by user-to-network inter- face (UNI), while other networks are interconnected through the network-to-network interface (NNI).…”

Section: Ngn Functional Architecturementioning

confidence: 99%

Towards Management of Next Generation Networks

Choi¹,

Hong

2007

IEICE Transactions on Communications

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SUMMARYNext Generation Network (NGN) is envisioned to be an inter-working environment of heterogeneous networks of wired and wireless access networks, PSTN, satellites, broadcasting, etc., all interconnected through the service provider's IP backbone and the Internet. NGN uses multiple broadband, QoS-enabled transport technologies and servicerelated functions independent from underlying transport-related technologies. The operations and management of such interconnected networks are expected to be much more difficult and important than the traditional network environment. In this paper, we present an overview of the current status towards the management of NGN and discuss challenges in operating and managing NGN. We also present the operations and management requirements of NGN in accordance with the challenges. We then present standardization activities of NGN management and some of the notable research and development efforts related to NGN management.

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“…Next generation networks (NGNs) evolved from packet-switched networks that use Internet Protocol (IP) at the network layer (Knightson, Morita, & Towle, 2005). NGNs can either be wireless, such as for mobile phones, or wired, such as for desktops.…”

Section: Introductionmentioning

confidence: 99%

QoS Performance Analysis of Bit Rate Video Streaming in Next Generation Networks Using TCP, UDP and a TCP+UDP Hybrid

Dlamini¹,

Lugayizi²,

Esiefarienrhe³

2016

Afr. j. inf. commun. (Online)

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The growth in users streaming videos on the Internet has led to increased demand for improved video quality and reception. In next generation networks (NGNs), such as 3G and 4G LTE, quality of service (QoS) implementation is one of the ways in which good video quality and good video reception can be achieved. QoS mainly involves following an industry-wide set of standard metrics and mechanisms to achieve high-quality network performance in respect of video streaming. Adopting routing and communication protocols is one way QoS is implemented in NGNs. This article describes QoS of bit rate video streaming, and QoS performance analysis of video streaming, in relation to the main network transport protocols, namely transmission control protocol (TCP) and user datagram protocol (UDP). A simulation test bed was set up using OPNET modeller 14.5. In this setup, a network topology was created and duplicated three times, in order to configure two simulation scenarios (each using the distinct protocols), and a third simulation scenario using both protocols in hybrid form. The findings in the simulations indicated that, when a network is configured with both TCP and UDP protocols in video streaming, there is a positive change in the degree of performance in terms of the QoS of videostreaming applications, unlike when the protocols are used independently.Keywords quality of service (QoS), bit rate video streaming, QoS routing, transmission control protocol (TCP), user datagram protocol (UDP)

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NGN architecture: generic principles, functional architecture, and implementation

Cited by 168 publications

References 0 publications

Fifth Generation Networking Principles for a Service Driven Future Internet Architecture

Fifth Generation Networking Principles for a Service Driven Future Internet Architecture

Towards Management of Next Generation Networks

QoS Performance Analysis of Bit Rate Video Streaming in Next Generation Networks Using TCP, UDP and a TCP+UDP Hybrid

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