Paper Info
Title
Dynamic bandwidth reallocation for NG-SDH networks based on Real-time Traffic Flow Analysis
Abstract
Synchronous Digital Hierarchy (SDH) networks are wildly deployed by telecom service providers (SP) around the world. Conventionally, SDH network circuits have to be designed and provisioned beforehand. Circuit profiles, including capacity, circuit route, end points..., have to be assigned before service activations. Any attempt of network re-configuration caused by network failures or traffic congestions will lead to uncertain service interruption. To further increase network availability, SPs have to overbuild their networks or to assign backup route(s) for each critical circuit, which, however, is costly and inefficient. With the introduction of technologies such as Virtual Concatenation (VCAT) and Link Capacity Adjustment Scheme (LCAS) of Next generation SDH (NG-SDH), SPs are able to adjust their SDH circuits at various bandwidth granularities and to hitlessly increase or decrease bandwidth of each circuit. In this study, we propose an effective approach to locate overbuild bandwidth, failed circuits, as well as congested circuits based on real time traffic flow data and network alarm message. Then our approach reallocates overbuilt network bandwidth in responding to network failures or traffic congestions by exploiting the benefit of VCAT and LCAS. Our simulation results show that our approach can significantly improve network availability as well as network resource utilization with minimal cost.
Year
DOI
Venue
2012
10.1109/APNOMS.2012.6356078
APNOMS
Keywords
Field
DocType
circuit profiles,synchronous digital hierarchy,bandwidth reallcoaiton,sdh circuits,virtual concatenation,next generation networks,bandwidth granularity,real-time traffic flow analysis,network resource utilization,backup route,next generation sdh,synchronous digital hierarchy networks,link capacity adjustment scheme,bandwidth allocation,telecommunication congestion control,telecom service providers,bandwidth on demand,network reconfiguration,network availability,real time traffic flow data,traffic congestions,service interruption,vcat,dynamic bandwidth reallocation,ng-sdh networks,network bandwidth,sdh network circuits,network failures,traffic flow analysis,lcas,network alarm message,ng-sdh,real-time systems,congested circuits,real time systems,availability,mobile communication,mobile computing,bandwidth
Next-generation network,Link Capacity Adjustment Scheme,Traffic flow,Computer science,Bandwidth allocation,Computer network,Bandwidth (signal processing),Dynamic bandwidth allocation,Virtual concatenation,Network traffic control,Distributed computing
Conference
ISBN
Citations 
PageRank 
978-1-4673-4495-1
0
0.34
References 
Authors
2
4
Name
Order
Citations
PageRank
Tsan-Chang Kuo121.09
Min-Chia Chang262.21
Chuan Yin321.09
Been-Huang Liao461.87