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We propose algorithms that uses fast graph mining for resolving the network topology to a locally regulated area defined as a component of network topology. Though the IP backbone network should be reconfigured periodically in accordance with environmental changes, reconfiguration results in heavy workload, such as routing re-designs or testing these re-designs for network operators. If a network...
Modern telecommunication networks are very complex and they should be able to deal with rapid and unpredictable changes in traffic flows. Virtual Network Topology is used to carry IP traffic over Wavelength-division multiplexing optical network. To use network resources in the most optimal way, there is a need for an algorithm, which will dynamically re-share resources among all devices in the particular...
We investigate the problem of managing the lifetime of links in IP backbone networks exploiting a sleep mode (SM) state. In particular, the SM duration tends to increase the lifetime, while the frequency of power state transitions tends to decrease it. After optimally formulating the problem of limiting the impact on the link lifetime when SMs are applied, we propose an online heuristic, called AFA,...
Software Defined Networking (SDN) is gaining momentum with the support of major manufacturers. While it brings flexibility in the management of flows within the data center fabric, this flexibility comes at the cost of smaller routing table capacities. In this paper, we investigate compression techniques to reduce the forwarding information base (FIB) of SDN switches. We validate our algorithm, called...
Satellite network is an important part in the future communication system and the routing design is always the bottleneck. Since the satellite technology constantly develops and the requirement of ground terminal grows, the routing technology in satellite networks is renovating all the time. In this paper various routing algorithm are analyzed. The routing problems concerning dynamic topology networks,...
In this article, we are interested in improving the handover quality of Host Identity Protocol (HIP) in the case of micro mobility by (i) proposing the Local Rendezvous Server architecture as a first attempt to minimize the handover delay in the mobility process, (ii) introducing an adaptive early update mechanism to improve the handover quality during mobility by introducing early HIP (eHIP) and...
Due to the advance in WDM technology and real-time applications, multicast communication is discussed recently. An important issue for real-time communication, fault restoration schemes, lets multicast communication reliable. In this paper, a novel QoS restoration scheme based on domination set (HFR-DS) is proposed. The domination node can provide dynamic method to generate the restoration path. This...
In recent years, overlay networks have emerged as an approach to provide a general framework for new applications and services to be implemented without significant changes in the IP-layer network infrastructure. Overlay Service Network (OSN) is a unified framework which acts as a top layer over the IP-layer network and makes overlay routing feasible. This paper mainly focuses on designing a QoS-satisfied...
Long Term Evolution (LTE) has being standardized by the 3rd generation partnership project (3GPP) as the evolution of WCDMA. Different from the conventional mobile communication technologies that deliver voice traffic through circuit switched networks, in LTE, all kinds of traffic are transferred through packet switched networks based on Internet Protocol (IP). In order to provide Quality of Service...
To improve the quality of IP service, it is important to quickly and accurately diagnosis the root fault from the observed symptoms and knowledge. The approximate inference based on Bayesian networks is the most popular fault diagnosis technology in recent years. Presently, fault localization based on Bayesian networks is only according to the current information and does not consider the time information...
Real-time distributed multimedia applications have special requirements in terms of bandwidth, delay, delay jitter, etc. The current network, essentially being a connection-less network, provides only un-reliable, best-effort service. The data packets may follow different paths to the destination. The network resources, viz., switch buffer and link bandwidth, are fairly shared by packets from different...
Packet classification enables network routers to provide advanced network services including network security, quality of service (QoS) routing, and multimedia communications. In order to classify a packet, network nodes must perform a search over a set of filters using multiple fields of the packet as the search key. Viewing the classification problem geometrically, classifying an arriving packet...
Nowadays Congestion control problem of the intermediate nodes in the Internet has received extensively attention in control community. In this paper, a novel intelligent PID (Proportional-Integral-Differential) controller based on neural networks (PIDNN) for the problem of AQM is presented. Considering a previously developed nonlinear dynamic model of TCP/AQM system and the queue management mechanism...
To adjust the traffic burst rate and support dynamic service flows, a multi-service token bucket algorithm was proposed to quality of service architecture in cable modem of HFC access network, based on a token assignment module between token generator and bucket, and polling policy. The acceptance test plan, defined by Cable Television Laboratories, was used to analysis the impact of queue depth on...
Ethernet technology is being deployed in metro and wide area networks. However, despite recent evolutions, Ethernet cannot be considered a carrier class technology due mainly to the lack of facilities for efficient traffic engineering (TE). In this article, we propose a Flow-aware TE approach for carrier class Ethernet networks providing services like those defined by the Metro Ethernet Forum. The...
Traditional IP multicast in a network domain is likely to imply a huge burden of storage and forwarding for routers and it's hard to support quality of service. The recent proposed application layer multicast is more scalable but increases traffic load and end-to-end delay. In the paper, we make multicast supporting comparable multi-class services on the overlay network comprising only edge routers...
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