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.
Information-Centric Networks (ICN) is a communication paradigm that promises to transfer the Internet from a host-to-host communication network to a massive information delivery system, capable of supporting the future needs of the users. ICNs are based on three main concepts: content forwarding, in-network caching, and multicasting. To realize these three key concepts, Software-Defined Networking...
This paper presents new Software Defined Networking (SDN) control framework for Quality of Service (QoS) provisioning. The proposed SDN controller automatically and flexibly programs network devices to provide required QoS level for multimedia applications. Centralized control monitors state of the network resources and performs smart traffic management according to collected information. Beside QoS...
In the course of generalizing the Inter-Process Communication (IPC) model from one system, two, to N systems directly connected, the necessity of a function to figure out via which “wire” or interface the requested application is available became apparent. In a Recursive Inter Network Architecture enabled system this is equivalent to asking on which of the Distributed IPC Facilities (layers) the requested...
Network virtualization is a promising and technically challenging concept, which enables the dynamic creation of several co-existing logical network instances (or virtual networks) over a shared physical network infrastructure. There are several motivations behind this concept, including: cost-effective sharing of resources; customizable networking solutions; and the convergence of existing network...
A novel Internet media distribution system based on overlay multicast was studied and implemented. In the system, the nodes build the multicast route with a tree-first strategy and maintain the topology with an active strategy. In order to run the routing and topology algorithm effectively, a series of messages and protocols are designed as the core in the system. The implementation of the multicast...
Current transport layer is facing challenges from both the original design drawbacks and new evolutionary technologies demands. The strict hierarchical layer architecture is restricted and inflexible, which makes the addition and deployment of new features difficult. While new evolutionary technologies, such as multihoming, mobility, ID/Locator split, need the transport layer import new functions...
Multicast is one of the key technologies for supporting the multimedia networks services. Based on the concept of the distributed algorithm theory, this paper discusses a multimedia communication model and its corresponding data structure, and also simulates RPM algorithm by using forwarding table, the time line and data packet cache to discuss the algorithm QoS solution.
Supporting Quality-of-Service resource reservations for IP multicast flows is especially advantageous for distributed multimedia applications like video conferencing, 3D tele-immersion, or multi-player online gaming. In response to various limitations of RSVP the IETF developed more flexible signaling protocols within the Next Steps in Signaling (NSIS) framework. But unlike RSVP, the NSIS protocols...
Nowadays we are witnessing a strong interest from the network operators towards provisioning all-IP services. The user demands and the effort of the operators to address them with traditional network management processes push the networks to a complexity where traditional network management methods do not scale and cannot guarantee error-free configurations, optimal resource utilization and dynamic...
Network Functional Composition is an approach for a flexible Internet architecture which decomposes the layered network stack in functional building blocks which can be loosely coupled. Functional Composition therefore enables a customized composition of functionality at the edges and in the network in respect to application specific requirements. Functional Composition is an architecture for a Future...
Many applications in the Internet today demand high end-to-end Quality of Service (QoS) assurance, such as bandwidth, delay, jitter and packet loss constraints. Also they seek better utilization of the network resources, while satisfying customer needs. Multi-constrained optimal path (MCOP) QoS routing problem attempts to find a feasible path that satisfies the requested QoS constraints, while maintaining...
The present day Internet has no separate namespace for host IDs. It uses IP addresses as host IDs, which are in fact locators. This dual role is problematic for mobility, multihoming, security, and routing on the Internet. To solve these problems, research has recently begun on ID/locator split architectures. Some standardization activities based on this concept are also progressing in ITU-T Study...
Many receivers driven cumulative layered multicast congestion control protocol such as RLM, RLC and FLID-DL used for multimedia application. However, these protocols are suffering with problem of congestion during IGMP leave latency leading to switching between overloading and under loading network state which can't utilize bandwidth so that quality of service gets degraded. To overcome of these problems,...
This paper proposes a mechanism which allows extending IMS service delivery on the Internet using overlay networks. Dubbed Advanced Quality of Service (AQoS), this solution aims at dynamically providing alternate high-bandwidth routes on the Internet using overlay network measurements to improve connection QoS. The estimation of the achievable QoS in the overlay network makes it possible to adapt...
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,...
Today's best-effort Internet with "one fits all" principle comes to an impasse. Addressed to different QoS requirements of today's network services, we propose a QoS oriented Network Architecture that bases on network virtualization. It provides multiple virtual networks deploying on the same substrate, each is designed with a special designing goal and is running a customized protocol....
The Border Gateway Protocol governs the overall routing in the Internet. With the time, it has been overloaded with functions which is was not initially designed for. The main example is Traffic Engineering. Internet Service Providers need to adjust the traffic on their peerings and in absence of a better alternative, use Trial and Error techniques based on manipulating the Autonomous System Path...
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...
Enhanced 9-1-1 (E9-1-1) Service is a public safety feature that allows customers to report an emergency or request emergency assistance by dialing the 3-digit telephone number ldquo9-1-1.rdquo Emergency calls originated in this manner are then routed to the appropriate Public Safety Answering Point (PSAP) based on the location from which the call was originated.
This paper evaluates the efficiency of set of modifications to the border gateway protocol (BGP) which aim at providing flexible traffic engineering (TE) across multiple GMPLS domains. A short overview and analysis of existing proposals for BGP-TE extensions is presented. Based on that, three modifications are proposed for support of multi-domain TE: an end-to-end path-specific TE attribute, a border...
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.