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    • 10. 发明授权
    • Access method for optical local area network systems
    • 光学局域网系统的访问方式
    • US5289302A
    • 1994-02-22
    • US814466
    • 1991-12-30
    • Masahiro Eda
    • Masahiro Eda
    • H04J14/00H04B10/27H04B10/275H04J14/02H04L12/423H04L12/433H04L12/64H04J14/04
    • H04J14/0227H04J14/0246H04L12/423H04J14/0201H04J14/021H04J14/0212H04J14/0283
    • A supervisory node (2) and non-supervisory nodes (3 through 9) are connected in a loop by an optical transmission path (1). Over the loop (1) are transferred optical signals having wavelengths of .lambda.1 through .lambda. n. An access right control packet 10 is transferred in the loop at the optical wavelength of .lambda.1. A node performing data transmission by line exchange writes its own node address (SA), the destination address (DA) and transmit reservation in the header of the access right control packet 10, and sends the packet out on the optical transmission path. The supervisory node 2 having received this access right control packet writes the wavelength to be used (.lambda.i) into the used wavelength field (UWL), and notifies the transmit and receive nodes of the choice of the wavelength. The transmit node sends data to the receive node by line exchange at the designated wavelength .lambda.i.
    • 监控节点(2)和非监督节点(3至9)通过光传输路径(1)以环路连接。 在循环(1)中,传输具有(λ)1到(λ)n的波长的光信号。 访问权限控制包10以(λ)1的光波长在环路中传送。 通过线路交换执行数据传输的节点在访问权限控制分组10的头部中写入自己的节点地址(SA),目的地址(DA)和发送预留,并在光传输路径上发送分组。 已经接收到该访问权限控制分组的监控节点2将要使用的波长((λ)i)写入所使用的波长域(UWL)中,并且向发送和接收节点通知该波长的选择。 发送节点通过在指定波长(λ)i处的线路交换来发送数据到接收节点。