caa a22 4500 445870710 CHVBK 20180317145510.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s11107-010-0303-x doi (NATIONALLICENCE)springer-10.1007/s11107-010-0303-x A hybrid protection strategy based on node-disjointness against double failures in optical mesh networks [Elektronische Daten] [Ning-Hai Bao, Zhi-Zhong Zhang, Le-Min Li, Hong-Fang Yu, Hong-Bin Luo] As the size and the complexity of optical mesh networks are continuing to grow and the severe natural disasters are occurring more frequently in recent years, multiple failures (link failures or node failures) become increasing probable. Protection strategies against these failures generally provision backup paths for working paths based on link-disjointness or node-disjointness. Compared with link-disjoint protection, node-disjoint protection means higher degree of risk isolation and can accommodate both link failures and node failures. This motivates us to propose a hybrid node-disjoint protection, named Segment and Path Shared Protection (SPSP), to provide 100% protection against arbitrary simultaneous double-node failures (the worst double-failure case). For each service connection request, SPSP first provisions backup segments for the working segments, respectively, as the primary backup resources, then provisions a single backup path for the whole working path as the second backup resource. In addition to its complete protection capability and flexible scalability for double failures, SPSP can also obtain better network load balance and resource sharing degree by dynamic link-cost adjustment and reserved backup resource sharing. Simulation results show that SPSP can achieve a shorter average recovery time than path shared protection (PSP) and higher resource utilization and lower blocking probability than segment shared protection (SSP). Springer Science+Business Media, LLC, 2011 Optical mesh network nationallicence Survivability nationallicence Double failure nationallicence Segment shared protection nationallicence Path shared protection nationallicence Segment and path shared protection nationallicence Bao Ning-Hai Key Lab of Broadband Optical Fiber Transmission and Communication Networks, University of Electronic Science and Technology of China, 610054, Chengdu, People's Republic of China aut Zhang Zhi-Zhong Chongqing University of Posts and Telecommunications, 400065, Chongqing, People's Republic of China aut Li Le-Min Key Lab of Broadband Optical Fiber Transmission and Communication Networks, University of Electronic Science and Technology of China, 610054, Chengdu, People's Republic of China aut Yu Hong-Fang Key Lab of Broadband Optical Fiber Transmission and Communication Networks, University of Electronic Science and Technology of China, 610054, Chengdu, People's Republic of China aut Luo Hong-Bin School of Electronic and Information Engineering, Beijing Jiaotong University, 100044, Beijing, People's Republic of China aut Photonic Network Communications Springer US; http://www.springer-ny.com 22/1(2011-08-01), 13-22 1387-974X 22:1<13 2011 22 11107 https://doi.org/10.1007/s11107-010-0303-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11107-010-0303-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bao Ning-Hai Key Lab of Broadband Optical Fiber Transmission and Communication Networks, University of Electronic Science and Technology of China, 610054, Chengdu, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Zhi-Zhong Chongqing University of Posts and Telecommunications, 400065, Chongqing, People's Republic of China aut NATIONALLICENCE 700 1- Li Le-Min Key Lab of Broadband Optical Fiber Transmission and Communication Networks, University of Electronic Science and Technology of China, 610054, Chengdu, People's Republic of China aut NATIONALLICENCE 700 1- Yu Hong-Fang Key Lab of Broadband Optical Fiber Transmission and Communication Networks, University of Electronic Science and Technology of China, 610054, Chengdu, People's Republic of China aut NATIONALLICENCE 700 1- Luo Hong-Bin School of Electronic and Information Engineering, Beijing Jiaotong University, 100044, Beijing, People's Republic of China aut NATIONALLICENCE 773 0- Photonic Network Communications Springer US; http://www.springer-ny.com 22/1(2011-08-01), 13-22 1387-974X 22:1<13 2011 22 11107 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer