Restoration message transfer mechanism and restoration characteristics of double-search self-healing ATM network

The self-healing network is particularly interesting with regard to ATM networks, because the restoration time can be shortened by using the advantages of the ATM network. This paper studies a self-healing ATM network based on virtual path (VP) protection switching. First, a novel self-healing algorithm/spl minus/the double-search self-healing algorithm/spl minus/is proposed. It is shown that this algorithm can restore failed bidirectional VPs faster and find alternate VPs more effectively than existing self-healing algorithms. Second, it is shown that the restoration information for self-healing control (SHC) messages must be transferred by specific cells carrying the control and OAM information (Ic&o). Message parameters and a cell format are proposed. Third, evaluation of the restoration characteristics using the proposed self-healing algorithm by computer simulation indicates that good performance against a transmission link failure is obtained even in a large-scale network model with 110 nodes. The results also indicate that the VP group (VPG) method can improve the restoration time without reducing the restoration ratio. >

[1]  Keiji Miyazaki,et al.  A distributed restoration algorithm for multiple-link and node failures of transport networks , 1990, [Proceedings] GLOBECOM '90: IEEE Global Telecommunications Conference and Exhibition.

[2]  N. Yoshikai,et al.  The roll of virtual path crossconnection , 1991, IEEE LTS.

[3]  Ken-ichi Sato,et al.  Self‐healing techniques utilizing virtual path concept for ATM networks , 1992 .

[4]  Noriaki Yoshikai,et al.  Transfer Mechanisms And Operation Of Self-healing Algorithms In ATM Networks , 1992, [Proceedings] NOMS '92 Network Without Bounds: IEEE 1992 Network Operations and Management Symposium.

[5]  C. H. Yang,et al.  FITNESS-failure immunization technology for network services survivability , 1988, IEEE Global Telecommunications Conference and Exhibition. Communications for the Information Age.

[6]  H. Kasai,et al.  Synchronous digital transmission systems based on CCITT SDH standard , 1990, IEEE Communications Magazine.

[7]  N. Yoshikai,et al.  Automated network connection tracing and data gathering methods using overhead bytes in the SDH frame structure , 1991, ICC 91 International Conference on Communications Conference Record.

[8]  Hideki Sakauchi,et al.  A self-healing network with an economical spare-channel assignment , 1990, [Proceedings] GLOBECOM '90: IEEE Global Telecommunications Conference and Exhibition.

[9]  H. R. Amirazizi.  Controlling synchronous networks with digital cross-connect systems , 1988, IEEE Global Telecommunications Conference and Exhibition. Communications for the Information Age.