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.
This paper studies the IP network routing algorithm based on mathematical theories and methods. It has analyzed the limitation based on distance vector of routing protocol RIP and based on links the routing protocol OSPF. It proposes an improved Dijkstra algorithm, makes the routers and communication links of the cost (transmission speed and delay) can taken into account. In view of distributed multimedia...
To support network mobility in wireless network, NEMO BSP is proposed by IETF. Mobility support paradigm is going to move from the MN to Network. PMIPv6 is the latest protocol based on local mobility management and network-based mobility. The mobile node can freely move between PMIPv6 network and mobile network. The previous NEMO protocols based on PMIPv6 cannot support this kind of mobility due to...
Owing to the heterogeneity and high degree of connectivity of various networks, there likely exist multiple available paths between a source and a destination. To be able to simultaneously and efficiently use such parallel paths, it is essential to facilitate high quality network services at high speeds. So, traffic splitting, having a significant impact on quality of services (QoS), is an important...
The paper focuses on implementation of association pattern between the network performances and the general network faults. We use network simulation tool, OPNET, to accomplish network simulations of different network faults and different situations based on VoIP. Network performance parameters such as end-to-end delay, jitter, traffic dropped, queuing delay, link throughout, link utilization are...
Traditionally, IP Network planning and design is mostly based on average delay or loss constraints which can often be easily calculated. Jitter, on the other hand, is much more difficult to evaluate but this is particularly important to manage the QoS of real-time and interactive services such as VoIP and streaming video. In this paper, we propose a simple model for the delay jitter that is fast enough...
In Voice-over-IP, jitter buffers are introduced at both sides of the sender and the receiver to compensate for delay jitters. A longer buffer reduces the possibility of packet loss and packet disorder at the expense of increasing conversational delays. In this paper, we propose a novel criterion for the calling quality of conversational VoIP, including the effect of delay on interactivity of a conversation...
Virtualization, in telecommunication, has been given great interest over the 20 past years. Migrating operating system instances between physical hosts is one of the most important features of this technology. It allows network administrators to resolve serious problem such us hardware failure, lack in server capacity, while facilitates the management and the upgrade of their systems. With the strong...
In this paper, we propose two algorithms for broadcasting a large data set with limited loads of all nodes on a DHT-based P2P network using a de Bruijn graph. One of the broadcast algorithms is applied to de Bruijn graphs with the restricted number of nodes. We prove that this algorithm broadcasts a data set along a degree-constrained spanning tree without global knowledge of a P2P network and that...
One of the main challenges in all-IP networks is the development of suitable mobility solution. Mobile IP (MIP) presents the standard protocol used to support IP mobility. However, MIP is inadequate for real-time applications and inter-domain mobility (when a mobile node performs handover between two autonomous systems (AS)). In this paper, we propose an efficient approach to manage inter-domain handover...
Current wired networks have been developed on the basis of the AIMD principle, which offers increased performance and fairness. Nevertheless, there is a vast spectrum of networks, from deep space to wireless sensor networks, where TCP fails to operate, as it results in frequent timeouts and intermittent or no connectivity at all. The DTN (delay/disruption tolerant networking) architecture and particularly...
This paper presents a novel probing scheme which can be used for estimating the available bandwidth of subpaths, without the requirement of control over both endpoints of a network path. Instead of a probe-packet receiver, this scheme uses the ICMP capability of routers. An estimate of the available bandwidth from the endpoint to a router is obtained in much the same way as for state-of-the-art end-to-end...
Understanding network performance especially in link level is becoming increasingly important for network management. This paper puts forward an approach to evaluate network performance based on hop-by-hop latencies from three different levels of granularity including interface granularity, city granularity and AS granularity. We use a set of large scaled traceroute data, from a number of sources...
Some mobile multicast schemes have been proposed in the past few years, but most of them study the reconstruction of multicast delivery tree, but little consider the mobile group membership management. In this paper, we propose a new mobile multicast method based on Two-Hop Multicast Listener Discovery (THMLD) protocol which provides the mobile multicast membership management function by forwarding...
As integration of heterogeneous networks has become one of the most important characters for next-generation networks, it becomes a very challenging issue to ensure effective handoff when mobile node moves between different heterogeneous networks. In this paper we propose an effective handoff mechanism based on location information. By processing geographical data (consisting of information about...
The aim of this article is to present a novel handover algorithm to decrease the handoff latency in all-IP based future heterogeneous mobile communication system (FHMCS). The reduction in handoff latency is achieved by employing mobile network discovery technique which will decrease the delays due to movement detection, new care of address configuration and duplicate address detection (DAD). The decrease...
A mechanism for reducing reverse traffic in the fuzzy logic based dual explicit congestion notification mechanism is proposed for satellite TCP/IP networks. A linguistic hedge based backward explicit congestion notification (BECN) activation function is employed in order to ensure that reverse traffic is generated only when congestion is extremely high. A source initiated RTT reverse traffic reduction...
A session transfer method, referred to as a modified assured (MA) session transfer, is proposed in order to support both session mobility and consistency for IP multimedia subsystem (IMS). The MA session transfer is based on the assured session transfer specified in but it simplifies a session dialogue by using user agent (UA) like characteristics of a serving-call session control function (S-CSCF)...
This work addresses the development of an ECN-based MBAC algorithm for use over HAIPE. The proposed MBAC resides at the red enclaves, but leverages the ECN, which is defined in RFC 3168 and can be activated at the existing black routers. With these MBAC capabilities, ad-mission control policies are generated at the red enclaves to react to the black core congestion without the need to pass information...
In the tactical Internet, inter-domain links consist mostly of unreliable and low bandwidth wireless links. To enable seamless routing across different Autonomous Systems (ASes), we propose an inter-domain Traffic Engineering (TE) scheme to reroute traffic when congestion occurs. There are two components for the TE scheme. First, a Traffic Splitting (TS) scheme is used for load balancing among parallel...
A voice conversation quality over IP networks is mainly affected by the end-to-end delay and the packet-loss rate. Various delay channel environment can cause the early/late arrival packet loss without actual packet loss. To overcome time-variant dynamics of transmission channels for IP telephone services, an adaptive playout-buffer scheduling is proposed. Previous playout-buffer schedulers focused...
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.