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    • 9. 发明公开
    • MULTIPLEXING METHOD FOR SCHEDULED FRAMES IN AN ETHERNET SWITCH
    • 一种以太网交换机中调度帧的复用方法
    • EP3217614A1
    • 2017-09-13
    • EP16305268.1
    • 2016-03-09
    • Mitsubishi Electric R&D Centre Europe B.V.Mitsubishi Electric Corporation
    • MANGIN, Christophe
    • H04L12/875H04L12/863H04L12/869
    • H04L47/6215H04L47/31H04L47/56H04L47/58H04L47/6275H04L49/351H04L49/9047
    • The present invention relates to a method for multiplexing data frames, in a packet-switched type network. The network comprises one or several switches having:
      - a first plurality of receiving ports, receiving said data frames, and
      - a second plurality of transmitting ports, for transmitting at least blocks of said data frames.
      Each frame includes a data field comprising information related to an index of priority for transmitting the frame. More particularly, a clock (CLK) is provided to said switches so as to apply a timestamp of reception of each frame in each receiving port, and a memory medium (MEM) is further provided so as to store transitorily each received frame along with its timestamp. The method comprises then the steps of:
      a) providing a plurality of memory buffers (Buff [k]), associated to respective indexes of priority, each buffer comprising one queue of frames having a same index of priority,
      b) sorting (S4) the received frames in a chosen buffer according to their index of priority,
      c) in each buffer (k), sorting (S6) the frames according to their respective timestamps (TSj), for ordering the queue of frames in each buffer from the earliest received frame on top of the queue to the latest received frame at the bottom of the queue, and
      d) feeding (S10) the transmitting ports with each frame or block of frame to transmit, in an order determined according to the index of priority of the frame, as well as an order of the frame or of the block of frame in the queue associated to the index of priority of the frame.
    • 分组交换型网络中的数据帧复用方法本发明涉 该网络包括一个或多个交换机,其具有: - 接收所述数据帧的第一多个接收端口,以及 - 第二多个传输端口,用于传输所述数据帧的至少一个块。 每个帧包括数据字段,该数据字段包括与用于发送帧的优先级索引有关的信息。 更具体地说,向所述开关提供时钟(CLK),以便在每个接收端口中应用每个帧的接收时间戳,并且进一步提供存储介质(MEM),以便将每个接收到的帧与其存储介质 时间戳。 然后,该方法包括以下步骤:a)提供与各个优先级索引相关联的多个存储器缓冲器(Buff [k]),每个缓冲器包括具有相同优先级索引的一个帧队列,b)分类(S4) c)在每个缓冲器(k)中,根据它们各自的时间戳(TSj)对帧进行排序(S6),用于从最早的时间对各缓冲器中的帧队列进行排序 在队列的顶部接收帧到队列底部的最新接收帧,以及d)按照根据优先级指数确定的次序,将发送端口与每个帧或帧的帧一起馈送(S10)以进行发送 该帧,以及与该帧的优先级索引相关联的队列中的帧或帧的顺序。