The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Source-specific routing (not to be confused with source routing) is a routing technique where routing decisions depend on both the source and the destination address of a packet. Source-specific routing solves some difficult problems related to multihoming, notably in edge networks, and is therefore a useful addition to the multihoming toolbox. In this paper, we describe the semantics of source-specific...
Network virtualization is a promising technique for building the Internet of the future since it enables the low cost introduction of new features into network elements. An open issue in virtualization is how to search for an efficient mapping of virtual network elements onto those of the existing physical network, also called the substrate network. Mapping is an NP-hard problem and existing solutions...
In order to successfully resolve the network infrastructure's problems the network provider has to improve the service quality. However in traditional ways, maintaining and improving of the service quality are generally determined in terms of quality of service criteria, not in terms of satisfaction and perception to the end-user. The latter is represented by Quality of Experience (QoE) that becomes...
Several studies have shown that the BGP protocol adopts a special routing policy such that the default BGP route is usually not the best choice in terms of path length or quality of service. In order to send the traffic through the shortest AS paths by overlay routing, we have to place overlay nodes at several critical points along such paths. Otherwise, these AS paths will never be available to end...
How to select a proper access gateway from the several gateways of a wireless mesh networks(WMN) to connect to the Internet is one of the critical technologies which can improve the performances of WMN. A multi-path multi-gateway WMN anycast routing protocol based on an ant colony optimization (MMAMBA) was presented. In this protocol, gateway selection was taken as an anycast service, the distributed...
In this paper, we proposed a three-layer dynamic gateway strategy, which integrates mobile IP and AODV protocol. This is one kind of multi-gateway mechanisms. By using irregular nodes not attached fixed gateway as gateway in Ad Hoc network, network overload will decreased. And the efficiency of the network will increased. According to the distance, the registered number of nodes and traffic-weighted...
While a variety of routing algorithms have been invented for overlay networks, only a few studies focus on the placement problem of overlay nodes. However, the performance of overlay routing always depends on the routing policy of the underlying Internet, such as BGP routing. According to the BGP routing policy, the result routing path heavily depends on the locations of the two end nodes. By placing...
Delay Tolerant Network is an emerging research field. In this network, a long period of network partition happens frequently. In this paper, we present the notion of QoN (Quality of Node) based on the differences of node activity. Then we introduce the notion of QoN to forward the number of message copies dynamically to improve the Binary Spray and Wait routing. This Protocol can avoid the blindness...
We propose a novel overlay routing infrastructure, namely Overlay-based Service Distribution Network(OSDN), which eliminates path inflation due to the inter-domain routing policy and could serve as a universal platform to convey various online services more efficiently. Its basic idea is to deploy overlay nodes at critical locations in the Internet such that the service provider and its customers...
The stringent requirement for the high efficiency of routing protocol on Internet will be satisfied by exploiting the threaded border gateway protocol (TBGP) on multi-cores. Since the TBGP performance is restricted by a mass of contentions when racing to access the routing table, a highly-efficient parallel access approach is originally proposed to achieve the ultra-high route processing speed. In...
Thanks to the advances in wireless technologies, mobile vehicular networks are likely to become the most relevant form of mobile ad hoc networks (MANET). Vehicular communication which facilitates the exchange of information between vehicles is the prerequisite not only for extending the access to Internet while on the road, but also to cater for special applications such as of road traffic and travel...
The increasing use of multiparty Web conferencing applications demands for suitable multicast protocols. Limited bandwidth of typical Internet user requires the underlying multicast routing to be efficient. In this paper we present HOMA; an application layer multicast protocol which has been tailored for small scale multiparty videoconferencing applications. Considering the requirements of such applications,...
Open shortest path first (OSPF) is a dynamic and inter-domain routing protocol with hierarchical architecture used in Internet networks routing. Area border router (ABR) had been proved to be an effective solution to the complicated network and scalability problem. Obviously, manual selection of ABR can not satisfy the dynamic change in the network load. A new scheme, based on the traffic engineering...
This paper deals with the congestion control problem for queues in TCP/IP networks. In order to improve the congestion control performance for queues, based on the utility optimization source model proposed by Kelly, the linear and terminal sliding active queue management (AQM) algorithms are designed. Especially in the terminal sliding AQM algorithm, a special nonlinear terminal sliding surface is...
Mesh networks are characterized by the use of multiple channels and multiple interfaces to improve the system throughput. A multi-interface multi-channel wireless mesh network consists of a number of stationary or minimally mobile wireless routers, forming a multi-hop Internet backbone. Previous research has revealed that single channel IEEE 802.11 MAC protocols are not suitable for multihop network...
The TCP NewReno congestion control protocol relies only on packer losses for detecting congestion-this causes long NewReno transfers to build up large packet queues in router buffers. High buffer occupancy hinders performance of real-time applications as well as the development of high-speed routers. Several alternate congestion-control strategies have been proposed in the literature to help maintain...
A well-known traffic engineering technology in MPLS network is the constraint-based routed label distribution protocol (CR-LDP). In case of conflict, CR-LDP coordinates LSPs that causes conflict, which would result in other conflicts and may cause chain of rerouting. Multi agent based path rerouting method avoids this chain of rerouting. In case of conflict MPRM co-ordinates all LSPs not only the...
Opportunistic routing (OR) schemes, such as ExOR, have been shown to provide significant throughput gains over traditional best-path routing schemes for wireless networks. Though the performance of OR schemes depend on the bit-rate, they currently use a fixed rate for transmitting packets. While several schemes have been proposed for selecting bit-rate for unicast transmission to a single receiver,...
In this paper, we present a new multicast architecture and the corresponding multicast routing protocol for providing efficient and flexible multicast services over the Internet. Traditional multicast protocols construct and update the multicast tree in a distributed manner, which may cause two problems: first, since each node has only local or partial information on the network topology and group...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.