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Network congestion must be managed to increase system throughput and quality of service. The existing congestion control approaches such as source throttling and rerouting focus on controlling congestion after it has already occurred. We propose a multistep Neural Network Prediction-based Routing (NNPR) protocol to predict as well as control network traffic before congestion actually happens. A distributed...
In next generation cellular networks, Quality of Service (QoS) delivery will need more network resources per user, leading to network congestion problems. Call Admission Control (CAC) is the process in charge of managing calls according to the availability of network resources. In order to overcome the problem of network congestion, the CAC should tackle pricing policies, improving by the same way...
In this paper, we discuss a p-persistent CSMA protocol based on-off source model in a cognitive radio network. Then the system model for primary user and cognitive user is analyzed in cognitive radio network, which using discrete event-driven simulation scheme. The article demonstrates various results such as cognitive user packet dropping probability and channel utilization rate, according to different...
As the high redundancy of network equipments and paths, connection reliability is no longer the most important parameter for networks. According to network function, this paper advances transmission time reliability as a common parameter to describe network congestion. It is defined to be the probability that networks will transmit material, energy or information timely when used under specified operating...
This paper presents an optimization of IP load-balanced routing for the hose model. We present an IP load-balanced routing scheme based on the two-phase routing over shortest paths. It is called a fine two-phase routing (F-TPR) scheme. In F-TPR, traffic is distributed from a source node to intermediate nodes more finely, compared to the original TPR. F-TPR introduces the distribution ratio to node...
Multi-nexthop routing mechanisms is the key point in network congestion, and the essential question is how to forward packets among multi-nexthop to reach equiponderant forwarding. This paper proposes an equiponderant forwarding strategy in multi-nexthop routing, which forwards the packets according to the actual capability of each node, and resolves the equiponderant forwarding problem of multi-nexthop...
We present a session initiation protocol (SIP) network design for a voice-over-IP (VoIP) network to prevent congestion caused by people calling friends and family after a disaster. The design increases the capacity of SIP servers in a network by using all the SIP servers equally. The design uses a property that SIP network elements do not carry voice data packets but signaling packets instead. Furthermore,...
This paper proposes a simple shortest-path-based load-balanced IP routing scheme for the hose model. The proposed scheme is an extension of the Smart-OSPF scheme. The proposed scheme, the same as S-OSPF, splits traffic demand only at source edge nodes and transmits the traffic along the shortest path routes. In S-OSPF, the split ratios are determined for each source-destination edge node pair by assuming...
Parallel computers essentially employ interconnection networks. Huge-scale systems require appropriate networks that can correspond to their required performance. This paper addresses a scalability issue of uniform interconnection networks. We first propose an evaluation method suitable to large-scale networks, define critical load ratio as a common measure, and introduce introduce ramp-, step-, and...
This paper deals with congestion problem in the combined pool and bilateral contract markets using redispatch method through a regulation market. In the combined market, a weighting factor is used for the volume traded in the pool and bilateral contract markets. The pool trades could be re-dispatched more than the bilateral transactions and vice versa, depending on the weighting factors. It has been...
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