On the Line Card Collection Model for Bandwidth Utilization and Latency Measurement in High-speed IP Networks

2007 ◽  
Author(s):  
ZHANG yi ◽  
TANG hong ◽  
YIN jianru
Keyword(s):  
High Speed ◽  
Ip Networks ◽  
Bandwidth Utilization ◽  
Line Card

scholarly journals BSS: A Burst Error-Correction Scheme of Multipath Transmission for Mobile Fog Computing

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Wentao Zhao ◽  
Ping Dong ◽  
Min Guo ◽  
Yuyang Zhang ◽  
Xuehong Chen
Keyword(s):  
High Speed ◽  
High Reliability ◽  
Fog Computing ◽  
Round Robin ◽  
Bandwidth Utilization ◽  
Transmission Scheme ◽  
High Quality ◽  
Multipath Transmission ◽  
Communication Needs ◽  
Bidirectional Selection

In the scenario of mobile fog computing (MFC), communication between vehicles and fog layer, which is called vehicle-to-fog (V2F) communication, needs to use bandwidth resources as much as possible with low delay and high tolerance for errors. In order to adapt to these harsh scenarios, there are important technical challenges concerning the combination of network coding (NC) and multipath transmission to construct high-quality V2F communication for cloud-aware MFC. Most NC schemes exhibit poor reliability in burst errors that often occur in high-speed movement scenarios. These can be improved by using interleaving technology. However, most traditional interleaving schemes for multipath transmission are designed based on round robin (RR) or weighted round robin (WRR), in practice, which can waste a lot of bandwidth resources. In order to solve those problems, this paper proposes a novel multipath transmission scheme for cloud-aware MFC, which is called Bidirectional Selection Scheduling (BSS) scheme. Under the premise of realizing interleaving, since BSS can be used in conjunction with a lot of path scheduling algorithms based on Earliest Delivery Path First (EDPF), it can make better use of bandwidth resources. As a result, BSS has high reliability and bandwidth utilization in harsh scenarios. It can meet the high-quality requirements of cloud-aware MFC for transmission.

An Improved TCP Congestion Control Algorithm in High Speed Satellite Links

2014 ◽  
Vol 667 ◽  
pp. 129-132
Author(s):  
Feng Liu ◽  
Dong Po Ren
Keyword(s):  
Error Rate ◽  
High Speed ◽  
Transmission Rate ◽  
Packet Error Rate ◽  
Bandwidth Utilization ◽  
Available Bandwidth ◽  
Trip Time ◽  
Geo Satellite ◽  
Satellite Links ◽  
Congestion Control Algorithm

The throughput of traditional TCP degrades drastically in high speed satellite links, where the characteristics of long round trip time (RTT) and high bit error rate (BER) happen together. Two typical improved algorithms, Hybla and Westwood, are designed to solve the problems of long RTT and high BER respectively. TCP-HW which combines the advantages of Hybla and Westwood is proposed in this paper, on the basis of consideration of both long RTT and high BER. At slow start and congestion avoidance phase, TCP-HW adopts a radical congestion window (cwnd) growth policy to eliminate the low data transmission rate bring by long RTT as Hybla does. At fast retransmit and fast recover phase, TCP-HW updates the cwnd according to the estimated available bandwidth in Westwood to avoid the frequently unnecessary reduction of cwnd due to high BER. There, the cwnd can be kept large enough to achieve high throughput. Simulation results in NS2 indicate that the change of RTT and packet error rate (PER) has little impact on TCP-HW and the bandwidth utilization of TCP-HW can reach more than fifty percent in the 1Gbps GEO satellite link with 500ms RTT and 0.001 PER. In addition, TCP-HW still have good fairness.

Design and Analysis of Optical Packet Switch Routers

2017 ◽  
pp. 118-157 ◽  
Author(s):  
Vaibhav Shukla ◽  
Aruna Jain
Keyword(s):  
Wavelength Division Multiplexing ◽  
High Speed ◽  
Packet Switching ◽  
Data Transfer ◽  
Optical Packet Switching ◽  
Bandwidth Utilization ◽  
Wavelength Division ◽  
Optical Packet Switch ◽  
Switch Architectures ◽  
Packet Switch

Optical packet switching is connectionless networking solution through which we can get high speed data transfer and optimum bandwidth utilization using wavelength division multiplexing technique. For realizing optical packet switching the numbers of optical packet switch architectures are available in market. In this chapter the authors discuss the overall development of optical packet switching; some recently published optical packet switch architectures are discussed in the chapter and a comparison is performed between the switches through loss, cost and buffer analysis.

Restoration Technique to Optimize Recovery Time for Efficient OSPF Network

2016 ◽  
pp. 64-88
Author(s):  
Pertik Garg ◽  
Ashu Gupta
Keyword(s):  
Packet Loss ◽  
Recovery Time ◽  
High Speed ◽  
Loss Rate ◽  
Ip Networks ◽  
Packet Loss Rate ◽  
Convergence Time ◽  
Topology Change ◽  
Routing Table ◽  
Restoration Technique

Some high speed IP networks, which involve interior gateway protocols, such as OSPF, are not capable of finding the new routes to bypass the effect like failure in time. At the point when the failure occurs the network must converge it before the traffic has the capacity to go to and from the network segment that caused a connection disconnect. The duration of the convergence period of these protocols vary from hundred of milliseconds to 10 seconds, which creates unsteadiness and results high packet loss rate. This issue may be determined by proposing an algorithm that can rapidly react to the topology change and reduce the convergence time by providing back up path which is already stored in routing table before the failover occurs.

Simple Available Bandwidth Utilization Library for High-Speed Wide Area Networks

2005 ◽  
Vol 34 (3) ◽  
pp. 231-242 ◽  
Author(s):  
Robert L. Grossman ◽  
M. Mazzucco ◽  
H. Sivakumar ◽  
Y. Pan ◽  
Q. Zhang
Keyword(s):  
High Speed ◽  
Wide Area ◽  
Wide Area Networks ◽  
Bandwidth Utilization ◽  
Available Bandwidth
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