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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...
Current network situation with its limited resources and excessive users' demands reveals the potential necessity for revolutionary organization and management of these resources. Efficient and effective resource scheduling significantly reduces queuing delay which considered as crucial particularly for sensitive packets such as real-time application. This study investigates in the main four categories...
The potential increase in the popularity of greedy software such as download accelerator software and greedy application such as P2P leads to a significant demands for reconstruction of the old fashion max-min fairness definition. Furthermore, these applications and software monopolize network bandwidth and hence result in magnificent degradation in the performance of real-time application such as...
Queue scheduling algorithm achieves the assignment of the network resource through scheduling strategy, the reserved bandwidth and delaytime can be guaranteed, then the router select the next packet waiting for forwarding from one or more queues based on some rules, All input network services can share the output bandwidth according to reserved way, to have corresponding resource, and to meet service...
With campus networks business growing, the networks are asked to meet real-time and half real-time business performance and the quality of services such as VOIP and IPTV. Through the measurement and analysis of campus network's primary service, association deduce the self-similarity model and queuing model, and the correlation value ρ is calculated. This paper sets up a suitable multi-port input queuing...
In Medium and High Rate Wireless Sensor Networks (MHWSNs), a sensor node may gather different kinds of network traffic. To support quality of service (QoS) requirements for different kinds of network traffic, an effective and fare queuing and scheduling scheme is necessary. The paper present a queuing model to distinguish different network traffic based priority, and proposed a rate adjustment model...
HCF controlled channel access (HCCA), defined in the IEEE 802.11e document, provides a sample scheduler to allocate transmission opportunity (TXOP) to QoS-aware stations (QSTAs). Since the calculation of TXOP duration is based on mean data rate, it is efficient for constant bit rate (CBR) traffic. For variable bit rate (VBR) traffic, however, delay bound of some admitted traffic flows may be violated...
We address analytic performance evaluation of a bluetooth piconet by considering the M/G/1 queue with batch arrivals and vacation times. We present a probabilistic approach to support diverse traffics with QoS guarantees. We consider mainly two constraints: the packet deadline and its priority. We focus on two new scheduling techniques that we have proposed in our previous works. The first technique...
The emerging broadband wireless access (BWA) technology based on IEEE 802.16 is one of the most promising solutions to provide ubiquitous wireless access to the broadband service at low cost. This paper proposes an efficient uplink bandwidth request-allocation algorithm for variable-rate realtime services in IEEE 802.16 BWA networks. In order to minimize bandwidth wastage without degrading quality...
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