数学物理学报(英文版) ›› 2013, Vol. 33 ›› Issue (6): 1579-1588.doi: 10.1016/S0252-9602(13)60106-X

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VERTEX-FAULT-TOLERANT CYCLES EMBEDDING ON ENHANCED HYPERCUBE NETWORKS

张艳娟*|刘红美|刘敏   

  1. College of Science, China Three Gorges University, Yichang, Hubei Province, 443002, China
  • 收稿日期:2012-06-12 修回日期:2012-10-26 出版日期:2013-11-20 发布日期:2013-11-20
  • 通讯作者: 张艳娟,pyyj134@163.com E-mail:pyyj134@163.com; liuhm@ctgu.edu.cn; liumin8989666@126.com
  • 基金资助:

    This project is supported by NSFC (11071096 and 11171129) and Hubei Province, China (T201103).

VERTEX-FAULT-TOLERANT CYCLES EMBEDDING ON ENHANCED HYPERCUBE NETWORKS

 ZHANG Yan-Juan*, LIU Hong-Mei, LIU Min   

  1. College of Science, China Three Gorges University, Yichang, Hubei Province, 443002, China
  • Received:2012-06-12 Revised:2012-10-26 Online:2013-11-20 Published:2013-11-20
  • Contact: ZHANG Yan-Juan,pyyj134@163.com E-mail:pyyj134@163.com; liuhm@ctgu.edu.cn; liumin8989666@126.com
  • Supported by:

    This project is supported by NSFC (11071096 and 11171129) and Hubei Province, China (T201103).

摘要:

In this paper, we study the enhanced hypercube, an attractive variant of the hypercube and obtained by adding some complementary edges from a hypercube, and focus on cycles embedding on the enhanced hypercube with faulty vertices. Let Fv be the set of faulty vertices in the n-dimensional enhanced hypercube Qn,k (n ≥ 3, 1 ≤ k ≤ n − 1)
When |Fv| = 2, we showed that Qn,kFv contains a fault-free cycle of every even length from 4 to 2n − 4 where n (≥3) and k have the same parity; and contains a fault-free cycle of every even length from 4 to 2n − 4, simultaneously, contains a cycle of every odd length from nk+2 to 2n−3 where n (≥3) and k have the different parity. Furthermore, when |Fv| = fv ≤ n − 2, we prove that there exists the longest fault-free cycle, which is of even length 2n − 2fv whether n (n ≥3) and k have the same parity or not; and there exists the longest fault-free cycle, which is of odd length 2n − 2fv + 1 in Qn,k Fv where n (≥3) and k have the different parity.

关键词: enhanced hypercube, fault tolerance, cycles embedding

Abstract:

In this paper, we study the enhanced hypercube, an attractive variant of the hypercube and obtained by adding some complementary edges from a hypercube, and focus on cycles embedding on the enhanced hypercube with faulty vertices. Let Fv be the set of faulty vertices in the n-dimensional enhanced hypercube Qn,k (n ≥ 3, 1 ≤ k ≤ n − 1)
When |Fv| = 2, we showed that Qn,kFv contains a fault-free cycle of every even length from 4 to 2n − 4 where n (≥3) and k have the same parity; and contains a fault-free cycle of every even length from 4 to 2n − 4, simultaneously, contains a cycle of every odd length from nk+2 to 2n−3 where n (≥3) and k have the different parity. Furthermore, when |Fv| = fv ≤ n − 2, we prove that there exists the longest fault-free cycle, which is of even length 2n − 2fv whether n (n ≥3) and k have the same parity or not; and there exists the longest fault-free cycle, which is of odd length 2n − 2fv + 1 in Qn,k Fv where n (≥3) and k have the different parity.

Key words: enhanced hypercube, fault tolerance, cycles embedding

中图分类号: 

  • 05C90