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.
It is necessary to monitor the usage of network resources in the core network, and give the solution to avoiding network congestion problems. Congestion control method in Huawei's routers and switches is analyzed. Based on it, then a real-time network traffic analysis and quality of service management platform was designed. With four-tier architecture and five functional modules, the platform achieves...
Network traffic can be divided into delay-sensitive and delay-tolerant traffic. Each delay-sensitive real-time flow has a different end-to-end delay deadline, and has to be delivered by that deadline. In general, real-time flows are to be processed prior to delay-tolerant flows, and each real-time flow may have the relative priority depending on its relative importance of real-time flows. A software-defined...
More attention has been paid to congestion control in the emerging area of wireless sensor networks (WSNs). However, most of the existing congestion control schemes are based on the best-effort data transmission service model. When networks congestion occurs, different categories of traffic are discarded indiscriminately, therefore, users' Quality of Service (QoS) is not able to be guaranteed. In...
Service differentiation is known as on the classic and major tasks in IP networks. We propose a novel queuing method which benefits both “Less Impact Better Service” (LIBS) and fuzzy logic paradigms. LIBS leads us to a queuing method called non-congestive queuing, which prioritizes small packets when conditions permit to limit the delay impact of prioritization on congestive applications. In our proposed...
This paper addresses the modeling of specific Smart Grid (SG) communication requirements from a data networking research perspective, as a general approach to the study of different access technologies suitable for the last mile (LM). SGLM networks serve customers' Energy Services Interfaces. From functional descriptions of SG, a traffic model is developed. It is then applied to the study of an access...
The evolution of the World Wide Web (WWW) service has incorporated new distributed multimedia conference applications, powering a new generation of e-services development, and allowing improved interactivity. Most common interactive real-time applications are fault-tolerant but suffer from QoS limitations; low-latency requirements and reliability are cumulative to conference success, it may easily...
The increasing demand on multi-media services with very different QoS requirements and the employment of new wireless network protocols like 802.11 and 802.16, underscore the need for a network capable of supporting multi-services. Based on the LWDF (Largest Weighted Delay First) algorithm, DS-LWDF (Differentiated Service-LWDF) algorithm is proposed to realize the scheduling among RT (Real Time) and...
Because of the best-effort characteristics of the Internet, it is important to suppress the degradation of communication quality on the receiving side caused by data packet loss and errors as well as the limited network bandwidth. This paper focus on MPEG transmission over the Internet and Differentiated Services architecture established to improve Quality of Services (QoS). Packets are classified...
Differentiated services (DiffServ) scheme is good idea to support real-time applications in IP based networks. However, it fails to give the actual way for end user applications to request specific QoS as there is no connection admission control. It is difficulties to assure end-to end QoS in DiffServ networks. In order to overcome the limit of the DiffServ scheme, an approach to perform connection...
The next generation of mobile phones will be probably all-IP based enabling users to access Internet services. In order to make this possible a satisfactory quality of service, at least equal to the fixed Internet, must be ensured. To achieve this goal an end-to-end QoS system must be constructed. Another fact is the dominance of IP over other technologies due, in large measure, to its characteristic...
This paper examines the factors that significantly affect the latency performance of event-condition-action policy servers. In large scale applications, such as telecommunications QoS management, the offered traffic to a policy server can be expected to be hundreds, if not thousands, of events per second. Clearly, policy systems must exhibit throughput characteristics that are superior to the traffic...
In this paper, we are interested in real-time flows requiring quantitative and deterministic QoS (quality of service) guarantees. We focus more particularly on two QoS parameters: the worst case end-to-end response time and jitter. We consider a FIFO (first in first out) scheduling of flows. The FIFO scheduling is the simplest one to implement and very used. We first establish a bound on the worst...
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.