High availability path design in ring-based optimal networks
IEEE/ACM Transactions on Networking (TON)
Efficient algorithms for routing dependable connections in WDM optical networks
IEEE/ACM Transactions on Networking (TON)
Survivable Networks: Algorithms for Diverse Routing
Survivable Networks: Algorithms for Diverse Routing
Probability and Statistics with Reliability, Queuing and Computer Science Applications
Probability and Statistics with Reliability, Queuing and Computer Science Applications
Fixed-alternate routing and wavelength conversion in wavelength-routed optical networks
IEEE/ACM Transactions on Networking (TON)
Architectures and algorithms for fault management in optical wdm networks
Architectures and algorithms for fault management in optical wdm networks
Optical WDM Networks (Optical Networks)
Optical WDM Networks (Optical Networks)
Optical layer survivability: a services perspective
IEEE Communications Magazine
WDM optical communication networks: progress and challenges
IEEE Journal on Selected Areas in Communications
Availability analysis of span-restorable mesh networks
IEEE Journal on Selected Areas in Communications
Survivability in optical networks
IEEE Network: The Magazine of Global Internetworking
Availability guarantee in survivable WDM mesh networks: A time perspective
Information Sciences: an International Journal
Incorporating mutation probability into priority-aware protection in optical networks
IEEE Communications Letters
Availability formulations for segment protection
IEEE Transactions on Communications
Risk-aware routing for optical transport networks
INFOCOM'10 Proceedings of the 29th conference on Information communications
Interval availability estimation for protected connections in optical networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Fast simulation of service availability in mesh networks with dynamic path restoration
IEEE/ACM Transactions on Networking (TON)
Optimization problems in proportional differentiated admission control
Proceedings of the 5th International Conference on Ubiquitous Information Management and Communication
Risk-aware provisioning for optical WDM mesh networks
IEEE/ACM Transactions on Networking (TON)
Availability analysis under multiple link failures in WDM networks with shared-link connections
Photonic Network Communications
Multilayer Protection with Availability Guarantees in Optical WDM Networks
Journal of Network and Systems Management
Trading availability among shared-protected dynamic connections in WDM networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Availability study of M: N automatic protection switching scheme in WDM networks
Journal of High Speed Networks
| Hi-index | 0.00 |
In an optical WDM mesh network, different protection schemes (such as dedicated or shared protection) can be used to improve the service availability against network failures. However, in order to satisfy a connection's service-availability requirement in a cost-effective and resource-efficient manner, we need a systematic mechanism to select a proper protection scheme for each connection request while provisioning the connection. In this paper, we propose to use connection availability as a metric to provide differentiated protection services in a wavelength-convertible WDM mesh network. We develop a mathematical model to analyze the availabilities of connections with different protection modes (i.e., unprotected, dedicated protected, or shared protected). In the shared-protection case, we investigate how a connection's availability is affected by backup resource sharing. The sharing might cause backup resource contention between several connections when multiple simultaneous (or overlapping) failures occur in the network. Using a continuous-time Markov model, we derive the conditional probability for a connection to acquire backup resources in the presence of backup resource contention. Through this model, we show how the availability of a shared-protected connection can be quantitatively computed. Based on the analytical model, we develop provisioning strategies for a given set of connection demands in which an appropriate, possibly different, level of protection is provided to each connection according to its predefined availability requirement, e.g., 0.999, 0.997. We propose integer linear programming (ILP) and heuristic approaches to provision the connections cost effectively while satisfying the connections' availability requirements. The effectiveness of our provisioning approaches is demonstrated through numerical examples. The proposed provisioning strategies inherently facilitate the service differentiation in optical WDM mesh networks.