IF all tokens of all endpoints in the group are assigned, the mediation flow request is stored in a FIFO queue until a token becomes free.

如果一个组中的所有端点的所有令牌都已分配出去，那么仲裁流请求将储存在一个fifo队列中，直至有令牌转变成未占用状态。

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If there are requests waiting, the token is assigned to the next request, which is removed from the queue.

如果存在正在等待的请求，那么令牌将分配给下一个请求，并且将该请求从队列中删除。

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This paper propose that the mathematical model of gated polling and Token Bus Prolocol for LANs is a multi-queue, single-server discrete system.

本文建立了一种门限式令牌总线局部网协议的数学模型——多用户单服务排队离散系统。

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