In this study, we consider wide-sense nonblocking operation of a converting-space-converting switching fabric. We propose a routing strategy based on the functional decomposition of second-stage switches, called the XsVarSWITCH routing strategy. This routing strategy is suitable for all kinds of three-stage switching fabrics operating in a slotted mode, regardless of frequency, time, or other types. We consider in this study a three-stage switching fabric. The first and third stages comprise switches with converting capability, while the middle stage is composed of space switches. The proposed routing strategy can reduce the number of required center-stage switches by almost 94% in some cases, as compared to the number of middle-stage switches under strict-sense nonblocking conditions.

中文翻译：

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XsVarSWITCH控制算法下的宽泛无阻塞转换空间转换交换节点架构

在这项研究中，我们考虑了转换空间转换交换结构的广义无阻塞操作。我们提出了一种基于第二阶段交换机功能分解的路由策略，称为XsVarSWITCH路由策略。此路由策略适用于以时隙模式运行的所有三级交换结构，而与频率，时间或其他类型无关。我们在这项研究中考虑了三阶段交换结构。第一级和第三级包括具有转换能力的开关，而中间级由空间开关组成。与严格意义上的无阻塞条件下的中间级交换机相比，在某些情况下，所提出的路由策略可以将所需的中心级交换机的数量减少近94％。