Title :
A bandwidth efficient self-healing ring for B-ISDN
Author :
Magill, Robert B.
Author_Institution :
Tellabs Res. Center, Mishawaka, IN, USA
Abstract :
This paper examines required capacity in self-healing rings (SHRs) as a function of the protection scheme, spare bandwidth allocation, routing and the traffic demand pattern. Existing SONET bidirectional rings and proposals for B-ISDN bidirectional rings assume a fixed allocation of 50% of the available bandwidth for protection traffic. This paper presents a method of minimum spare bandwidth allocation on bidirectional rings which reduces the required capacity for both symmetric and asymmetric demand between node pairs. It is shown that a bidirectional ring with 1:1 path protection and minimum spare bandwidth allocation requires equal or less ring capacity than existing SONET SHRs for any traffic demand pattern
Keywords :
B-ISDN; SONET; optical fibre networks; telecommunication network routing; telecommunication traffic; B-ISDN; SONET bidirectional rings; asymmetric demand; bandwidth efficient self-healing ring; minimum spare bandwidth allocation; path protection; path switching; protection scheme; ring capacity; routing; symmetric demand; traffic demand pattern; Asynchronous transfer mode; B-ISDN; Bandwidth; Channel allocation; Proposals; Protection switching; Routing; SONET; Switches; Telecommunication traffic;
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
DOI :
10.1109/ICC.1997.595052