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Prioritization of flows in a home network based on traffic classification is still no guarantee that enough bandwidth will be available between a server and a client. Besides, such QoS technologies need to be supported by every device in the end-to-end path to be effective, which is relatively expensive for the owners of home networks. In any small-scale IP network (best-effort or QoS-enabled) it...
This paper introduces a dynamic bandwidth assignment algorithm designed for ring topology (R-DBA) in order to meet the needs of the construction of Metropolitan Area Network (MAN).This algorithm targets ring topology, based on fair iteration, supports various Qos services and has previous assignment mechanism.
As more flexible and self-adaptive network connections are expected between cloud users and service vendors, the requests for more sophisticated bandwidth scheduling schemes are emerging. In this paper, we conduct a thorough study on the a specific type of bandwidth reservation: First-Slot scheduling in this scenario. We introduce a model for the optical networks with sparse wavelength conversion,...
In this paper, we provide a control-theoretic treatment of the resource allocations that adaptively occur in a QoS-aware network server system. Here, the target system being controlled is a logical service point that processes the transactions requested by clients using a resource infrastructure, with a goal of maximizing the revenues. Accurate management of resource allocations with a revenue-oriented...
The success of P2P file sharing systems inspired the development of P2P streaming systems for delivering online multimedia service in the last few years. The capacity of P2P streaming systems, i.e., how many peers can be concurrently serviced by the system, depends on system configurations including network bandwidth, overlay network formation, QoS constraints, membership management, peer selection,...
Quality of service routing has recently been improved by using localized routing rather than global state information. The traditional global method is associated with many problems which are avoided by using the Localized Quality of Service (QoS) routing, where the source nodes using statistics which is collected locally. Three new localized routing algorithms called Highest Minimum Bandwidth routing...
The biggest contemporary drawback in the maintenance and distribution of the global state is the increase in communication overheads. Localized routing is the method to avoid this problem. New localized routing algorithms called Highest Minimum Bandwidth routing (HMB) is introduced in this paper. The new algorithm is compared under different traffic loads and network topologies to the existing localized...
The IEEE 802.16 standard recently introduced an additional relay mode of operation permitting coverage extension of the point-to-multipoint (PMP) based WiMAX networks. Relays can further aid in increasing the achievable data rates for subscriber stations (SS) in the network. Although bandwidth management and scheduling have been studied in some detail in traditional IEEE 802.16 PMP networks, the corresponding...
In wireless local area networks (WLANs), the demand of the multimedia applications such as voice telephony and peer-to-peer content distribution has followed the necessity of quality-of-service (QoS) control for uplink flows. However, in uplink WLANs, the hidden-station problem causes difficulties in the QoS control because of unfair collision probability. In this paper, we point out this hidden-station...
Bandwidth resource allocation and scheduling has posed a challenging problem in wireless sensor networks. This paper provides a survey on the current state-of-the-art researches in this important area. Bandwidth reservation is considered in terms of time slot allocation in a pure TDMA or TDMA/CSMA based networks. We first overview different approaches for time slot allocation in a star network topology,...
Multiple non-interfering channels are available in 802.11 and 802.15.4 based wireless networks. Capacity of such channels can be combined to achieve a better performance thus providing a higher quality of service (QoS) than for a single channel network. However, existing routing protocols often are not suited to fully take advantage of these channels. The proposed multi-interface multi-channel routing...
The bandwidth broker is a management instance inside a PLC system, which has the complete overview about the network topology, the actual reserved bandwidth on each link inside its domain and should ideally have also a real-time view of the available bandwidth on each link. In this paper, we present a Bandwidth Broker implementation in the simulation environment. All the experiments demonstrated that...
In order to solve the scalability problem of QoS routing in large networks, hierarchical networks and hierarchical routing are proposed. There are tow key issues in hierarchical multicast routing (HMR): one is topology aggregation (TA), and the other is multicast tree state aggregation (MTSA). And the latter is discussed deeply in this paper. The main contributions of this paper include: multicast...
A novel hybrid WDM/TDM GPON topology with reflected-based ONUs is proposed. The OLT takes control of the bandwidth allocation for WDMA and TDMA ONUs. Differentiated QoS services are employed to support multiple different traffic patterns.
To effectively address the explosive growth of multimedia applications over the Internet, a large-scale media streaming system has to fully take into account the issues of security, quality of service (QoS), scalability, and heterogeneity. However, current streaming solutions do not address all these challenges simultaneously. To address this limitation, this paper proposes a secure and high-performance...
An integrated solution for WDM extensions to RPR is presented comprising: call admission control and signaling mechanism; a novel dynamic wavelength allocation scheme. This approach results in substantial saving in terms of opto-electronic interfaces
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