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Internet is becoming an indispensible infrastructure of essential media, which makes a great burden for ISP's security and traffic management. Especially the situation will be much more serious in NGI (the Next-Generation Internet) because of its innumerable users, mobile device, information appliances (IA) and networked sensors etc with 128-bit IPv6 address. For the reason of lacking scalability,...
Voice-over-IP (VoIP) is a key component of next-generation-networks and rapidly becoming more and more common in the Internet in general. This also increases the demand of VoIP operators for a scalable, distributed and flexible monitoring. But current monitoring architectures are either not designed for including application layer protocol analysis and data acquisition, or they are very specific and...
The Internet is rapidly evolving into a commercial infrastructure, resulting in an increasing demand for QoS guarantee from the network. The IPv6 FL (flow label) is a function that, as it was designed, can be a big help in alleviating QoS problem in the next generation Internet. However, the related research work is still far from enough to make it practical. In this paper, we firstly investigate...
Existing solutions for building wireless mesh networks suffer from reduced efficiency. This is due to lack of reliable self-configuration procedures that can dynamically adapt to varying network conditions, lack of efficient and scalable end-to-end quality of service (QoS) support, and lack of generalized and seamless mobility support. Therefore, ensuring a certain level of QoS to mobile users is...
In this work we present a model for online charging of media-rich services supporting dynamic QoS negotiation, within the third generation partnership project (3GPP) IP multimedia subsystem (IMS) emulated environment. In the QoS negotiation process a user, a network provider, and a service provider negotiate about the session to be initiated, resulting in an user-specific combination of media components...
Routers configure their paths based on the Link State Database (LSDB) in order to meet service requirements and Quality of Service (QoS) guarantee. Internet routing can be categorized into intra domain routing and inter domain routing, and QoS should be guaranteed both at the intra and inter domains for end-to-end QoS guarantee. The LSDB can be easily managed and updated at the inter domain routing...
As the next generation networks promise to provide network convergence with services for both static and mobile networks, the recent research focus is converging in the direction of standardizing common infrastructure based on all-IP networks. IMS is a recent initiative, designed by 3GPP and TISPAN partnership, which outlines a service delivery platform (SDP) framework. A flexible and robust QoS management...
IEEE P1900.4 is an emerging standard for optimized radio resource utilization where cognitive radio technologies are used for efficient spectrum utilization. In this paper, we design and implement a cognitive wireless network system based on open documents of IEEE P1900.4, and evaluate its performance using UDP streaming and HTTP download. Our experiments show interesting results that total network...
Most network operators have considered reducing Label Switched Routers (LSR) label spaces (i.e. the number of labels that can be used) as a means of simplifying management of underlaying Virtual Private Networks (VPNs) and, hence, reducing operational expenditure (OPEX). This letter discusses the problem of reducing the label spaces in Multiprotocol Label Switched (MPLS) networks using label merging...
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