A class of 4-tight optimal double-loop networks infinite family;

On the basis of the L-shaped title theory,twelve classes new infinite families of tight optimal directed double-loop networks are given in this paper,and in this way,it expands double-loop networks infinite family.

Infinite families with a parameter of k-tight optimal double loop networks;

Let n,s1 and s2 be three positive integers,where s1<s2<n,gcd(n,s1,s2)=1,G(n;s1,s2) be a double loop network with n nodes.

A double loop network G(n;s1,s2) is a digraph with its vertex set V ={0,1,2,L,n ? 1} and its arc set A ={i→i +s1(mod n),i→i +s2(mod n) |i ∈ V },s1 and s 2 are called its steps.

This paper gives 7 infinite families of new 2 tight optimal double loop networks.

Equivalent span-tree of double-loop network G(N;1,s);

This paper analyzes a kind of double-loop networks DL(N, h), where the greatest common divisor is equal to h.

The shortest [+h]-link prior path and the bamboo raft(a new kind of L-shaped Tile)for a double-loop network are obtained.

On tight optimal double-loop networks G(N;r,s) with non-unit step;

Bintree-based shortest path algorithm of directed double-loop networks

Research on double-loop networks G(N;r,s) of span-tree

WDM double-loop networks are researched widely.