Architecture and Protocols for Authentication, Authorization, and Accounting in the Future Wireless Communications Networks

2008 ◽  
pp. 158-175
Author(s):  
Said Zaghloul ◽  
Admela Jukan
Keyword(s):  
Telecommunication Networks ◽  
Fourth Generation ◽  
Network Architectures ◽  
Ip Multimedia Subsystem ◽  
Communications Networks ◽  
Remote Authentication ◽  
Core Technology ◽  
Radius Protocol ◽  
Important Design ◽  
Current Systems

The architecture, and protocols for authentication, authorization, and accounting (AAA) are one of the most important design considerations in third generation (3G)/fourth generation (4G) telecommunication networks. Many advances have been made to exploit the benefits of the current systems based on the protocol remote authentication dial in user service (RADIUS)protocol, and the evolution to migrate into the more secure, robust, and scalable protocol Diameter. Diameter is the protocol of choice for the IP multimedia subsystem (IMS) architecture, the core technology for the next generation networks. It is envisioned that Diameter will be widely used in various wired and wireless systems to facilitate robust and seamless AAA. In this chapter, we provide an overview of the major AAA protocols RADIUS and Diameter, and we discuss their roles in practical 1xEV-DO network architectures in the three major network tiers: access, distribution, and core. We conclude the chapter with a short summary of the current and future trends related to the Diameter-based AAA systems.

scholarly journals Mobile P2P Web Services Using SIP

2007 ◽  
Vol 3 (3-4) ◽  
pp. 165-185 ◽  
Author(s):  
Guido Gehlen ◽  
Fahad Aijaz ◽  
Yi Zhu ◽  
Bernhard Walke
Keyword(s):  
Service Providers ◽  
Instant Messaging ◽  
Telecommunication Networks ◽  
Ip Multimedia Subsystem ◽  
Multimedia Services ◽  
Message Routing ◽  
Internet Service ◽  
Routing Security ◽  
Session Management ◽  
Mobile P2p

Telecommunication networks and the Internet are growing together. Peer-to-Peer (P2P) services which are originally offered by network providers, like telephony and messaging, are provided through VoIP and Instant Messaging (IM) by Internet service providers, too. The IP Multimedia Subsystem (IMS) is the answer of the telecommunication industry to this trend and aims at providing Internet P2P and multimedia services controlled by the network operators. The IMS provides mobility and session management as well as message routing, security, and billing.

Overview of IP Multimedia Subsystem Protocols and Communication Services

2011 ◽  
pp. 273-299
Author(s):  
Sándor Szabó ◽  
László Gyöngyösi ◽  
Károly Lendvai ◽  
Sándor Imre
Keyword(s):  
Mobile Communications ◽  
Instant Messaging ◽  
Communication Technologies ◽  
Telecommunication Networks ◽  
Ip Multimedia Subsystem ◽  
Service Architecture ◽  
Communication Services ◽  
New Concepts ◽  
Service Portfolio ◽  
Fixed Mobile Convergence

The IP multimedia subsystem (IMS) provides advanced facilities and standardized service architecture for Next Generation Networks (NGN). IMS enables both cellular and fixed network operators to provide a wide and attractive service portfolio to the customers. In this chapter, we provide an overview of the IMS architecture and of the most popular IMS services. We discuss the basic components and mechanisms defined for IMS, the related IMS services, and we give a survey on the future of the evolving telecommunication networks. We examine the most popular IMS services such as Presence Service (PS), Instant Messaging (IM), and the background of these IMS services. The IMS system enables fixed-mobile convergence, and it bridges the gap between the fixed and mobile communications. To understand and use the new concepts and IMS services, it is important to know what the new IMS services and concepts bring to us. Our goal is to give a brief overview in order to help understanding today’s and tomorrow’s relevant communication technologies and protocols.

scholarly journals Extending the Quality of Secure Service Model to Multi-Hop Networks

2021 ◽  
Vol 1 (4) ◽  
pp. 793-803
Author(s):  
Paul M. Simon ◽  
Scott Graham
Keyword(s):  
Complex Networks ◽  
Network Architectures ◽  
Service Model ◽  
End Points ◽  
Communications Networks ◽  
Point To Point ◽  
Gain Access ◽  
Relay Stations

Rarely are communications networks point-to-point. In most cases, transceiver relay stations exist between transmitter and receiver end-points. These relay stations, while essential for controlling cost and adding flexibility to network architectures, reduce the overall security of the respective network. In an effort to quantify that reduction, we extend the Quality of Secure Service (QoSS) model to these complex networks, specifically multi-hop networks. In this approach, the quantification of security is based upon probabilities that adversarial listeners and disruptors gain access to or manipulate transmitted data on one or more of these multi-hop channels. Message fragmentation and duplication across available channels provides a security performance trade-space, with its consequent QoSS. This work explores that trade-space and the corresponding QoSS model to describe it.

Optical Networks: An Overview

2021 ◽  
pp. 3-22
Author(s):  
Debasish Datta
Keyword(s):  
Optical Networks ◽  
Optical Fibers ◽  
Telecommunication Networks ◽  
Telephone Network ◽  
Network Architectures ◽  
Optical Networking ◽  
Basic Service ◽  
Two Generations ◽  
Multiple Services ◽  
Networking Technologies

We present an overview of optical networks, beginning with a background of today’s telecommunication networks and the roles of optical fibers therein. Next, we describe the chronology of developments in telecommunication networks starting from the days of public-switched telephone network (PSTN) offering ‘plain old telephone service’ as the basic service, followed by the divestiture of Bell Laboratories and subsequent developments of the demonopolized regime of telecommunication networks with multiple services offered to users by the same network providers. Then we describe the salient features of the two generations of optical networks for various network segments, including single-wavelength and WDM-based LANs/MANs, accesses networks, metro and long-haul networks, datacenters, and elastic optical networks. Finally, we discuss briefly the possible network architectures with the evolving optical-networking technologies. (124 words)

Optical Networking

2012 ◽  
pp. 4-36
Author(s):  
Sanjeev Kumar Raghuwanshi
Keyword(s):  
Optical Fiber ◽  
Network Performance ◽  
High Capacity ◽  
Telecommunication Networks ◽  
Network Architectures ◽  
Signal Restoration ◽  
Fiber Technology ◽  
Ip Network ◽  
Optical Domain ◽  
Ethernet Network

Telecommunication networks based on optical fiber technology have become a major information transmission system with high capacity optical fiber links encircling the globe in both terrestrial and undersea installation. At present there are numerous passive and active optical devices within a light wave link that perform complex networking functions in the optical domain, such as signal restoration, routing, and switching. Along with the need to understand the functions of these devices comes the necessity to measure both components and network performance and to model and simulate the complex behavior of reliable high capacity networks. This chapter presents the fundamental principles for understanding and applying these issues. This chapter is primarily about TCP/IP network protocols and Ethernet network architectures, but also briefly describes other protocol suites, network architectures, and other significant areas of networking. It explains in simple terms the way networks are put together, and how data packages are sent between networks and subnets, along with how data is routed to the Internet.

scholarly journals Prediction of Domestic Hot Water Temperature in a District Heating Network

2021 ◽  
Vol 2042 (1) ◽  
pp. 012026
Author(s):  
Frédéric Montet ◽  
Lorenz Rychener ◽  
Alessandro Pongelli ◽  
Jean Hennebert ◽  
Jean-Philippe Bacher
Keyword(s):  
Distribution System ◽  
Domain Knowledge ◽  
District Heating ◽  
Hot Water ◽  
Fourth Generation ◽  
Network Architectures ◽  
Load Prediction ◽  
Domestic Hot Water ◽  
Customer Profiling ◽  
Customer Profiles

Abstract With the fourth generation of district heating networks in sight, opportunities are rising for better services and optimized planning of energy production. Indeed, the more intensive data collection is expected to allow for load prediction, customer profiling, etc. In this context, our work aims at a better understanding of customer profiles from the captured data. Given the variety of households, such profiles are difficult to capture. This study explores the possibility to predict domestic hot water (DHW) usage. Such prediction is made challenging due to the presence of two components in the signal, the first one bound to the physical properties of the DHW distribution system, the second one bound to the human patterns related to DHW consumption. Our contributions include (1) the analysis of recurrent neural network architectures based on GRU, (2) the inclusion of state-based labels inferred in an unsupervised way to simulate domain knowledge, (3) the comparison of different features. Results show that the physical contribution in the signal can be forecasted successfully across households. On the contrary, the stochastic “human” component is harder to predict and would need further research, either by improving the modelling or by including alternate signals.

Sign in / Sign up

Export Citation Format

Share Document