Fault-tolerant ring embedding in a star graph with both link andnode failures |
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Authors: | Yu-Chee Tseng Shu-Hui Chang Jang-Ping Sheu |
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Affiliation: | Dept. of Comput. Sci. & Inf. Eng., Nat. Central Univ., Chung-Li; |
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Abstract: | The star graph interconnection network has been recognized as an attractive alternative to the hypercube network. Previously, the star graph has been shown to contain a Hamiltonian cycle. In this paper, we consider an injured star graph with some faulty links and nodes. We show that even with fe⩽n-3 faulty links, a Hamiltonian cycle still can be found in an n-star, and that with fv⩽n-3 faulty nodes, a ring containing at most 4fv nodes less than that in a Hamiltonian cycle can be found (i.e. the ring contains at least n!-4fv nodes). In general, in an n-star with fe faulty links and fv faulty nodes, where fe+fv⩽n-3, our embedding is able to establish a ring containing at least n!-4fv nodes |
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