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When planning survivable WDM mesh networks, conventional solutions to provide differentiated reliability under shared risk link group (SRLG) constraints mostly assume explicit knowledge of traffic matrices, and consider the failure probability of a fiber link with single criteria (e.g., the link length). Due to the highly variation of nowadays demand patterns and multiple causes of SRLG failures,...
In this paper, we analyze several issues involved in developing effective routing schemes for the LEO satellite network. It is observed that the relative movement of the satellites in the constellation has a significant impact on the ISL connectivity. Motivated by this observation, we develop a new effective algorithm called handover aware topology-slice (HATS) routing algorithm for LEO the satellite...
Topological dynamics and periodicity are two of the major differences between LEO satellite networks and terrestrial networks. In this work, we first propose MAPSS (Method to Analyze Periodicity of Satellite System) to obtain the system period of satellite networks based on spectral analysis. Then the topological dynamics of satellite networks, including the number of snapshots in one system period,...
We address the issue of traffic-oblivious routing (i.e., robust routing) in WDM networks dealing with both link and node failures under load-balancing architectures. Two distinct schemes are proposed. One is static with the goal of minimizing total network cost given a set of multiple failures. The other considers dynamic network environment (i.e., connection requests arrive one after another), and...
In this paper, we introduce a novel oblivious routing scheme based on valiant load-balancing for the model of polyhedral uncertainty (i.e., hose model), and the scheme is implemented with traffic-grooming approach in WDM mesh networks. Considering that a high-speed connection request in optical networks is difficult to be divided into low-speed connections, we propose the method of hose-model separation...
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