DocumentCode :
1950936
Title :
Definitions of restoration mechanism availability and their applications
Author :
Chen, Shanzhi ; Cheng, Shiduan ; Chen, Bin ; Chen, Junliang
Author_Institution :
China Acad. of Telecommun. Technol., Beijing, China
Volume :
1
fYear :
1997
fDate :
8-12 Jun 1997
Firstpage :
283
Abstract :
Network/service survivability is an important problem demanding prompt solution in the design and planning of new telecommunications networks (e.g., SDH networks and ATM networks). Different restoration mechanisms for SDH and ATM networks have already been developed. The previous literature comparing and evaluating the restoration mechanisms only uses a simple method. In order to overcome the shortcomings in the traditional method, this paper proposes the customer-oriented and network engineer-oriented definitions of restoration mechanism availability. In the second definition, the extra spare capacity requirement in the network is taken into account in the availability analysis. Because an exact measurement of the availability is not feasible due to the large number of failure states in the network, an ORDER algorithm (Li and Silverter 1984) to get a reasonable subset to approximately measure the availability is recommended. Then, applications of the definitions are given. One application is how this definition is used by network planner/engineer to construct a cost-effective survivable network. Another application is that a new group of parameters-survivability quality of service (SQoS) is defined and added to CAC (connection admission control) of the ATM survivable network. Finally, a simulation using two definitions is performed. The simulation results prove that two availabilities can evaluate restoration mechanisms more sufficiently and more meaningfully
Keywords :
asynchronous transfer mode; synchronous digital hierarchy; telecommunication congestion control; telecommunication network reliability; ATM networks; ORDER algorithm; SDH networks; SQoS; capacity requirement; connection admission control; cost-effective survivable network; customer-oriented definition; design; failure states; network engineer-oriented definition; network survivability; planning; restoration mechanism availability; service survivability; survivability quality of service; Admission control; Availability; Costs; Large-scale systems; Measurement standards; Performance evaluation; Quality of service; Synchronous digital hierarchy; Telecommunication services; Testing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 1997. ICC '97 Montreal, Towards the Knowledge Millennium. 1997 IEEE International Conference on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-3925-8
Type :
conf
DOI :
10.1109/ICC.1997.605246
Filename :
605246
Link To Document :
بازگشت