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    • 33. 发明授权
    • Multichannel, multihop lightwave communication system
    • 多通道,多功能光波通信系统
    • US4914648A
    • 1990-04-03
    • US331036
    • 1989-03-29
    • Anthony AcamporaMichael G. HluchyjMark J. Karol
    • Anthony AcamporaMichael G. HluchyjMark J. Karol
    • H04J14/02H04L12/28
    • H04J14/0227H04J14/0246H04J14/0247H04J14/025H04J14/0252H04L12/28H04J14/028H04J14/0282
    • The present invention relates to a multichannel multihop lightwave communication network which allows packet concurrency in the network while avoiding the need for agile optical devices. The network comprises a lightwave communication medium (10) for supporting a plurality of independent user nodes; and a plurality of N network interface units (NIUs) (11). Each NIU is connected to the lightwave medium and one or more separate user nodes and comprises a trnasmitter section (28-35) and a receiver section (20-27) which are each fixedly assigned to transmit and receive, respectively, over a single channel or a plurality of separate channels to or from other NIUs of the network. In a connectivity pattern for one embodiment of the network, the NIUs are divided into k groups of p.sup.k NIUs such that each NIU of a first group of p.sup.k NIUs is capable of transmitting over the fixedly assigned single channel, or any or all of the p separate channels, to a preferred one or all of the associated p separate NIUs of a second group, etc. based on a generalization of a perfect shuffle pattern. Such technique permits all NIUs of the network to communicate with all other NIUs either via a single hop or via multiple hops where NIUs in subsequent groups of p.sup.k NIUs act as intermediate retransmission units.
    • 本发明涉及一种允许网络中的分组并发,同时避免对敏捷光学设备的需要的多信道多跳光波通信网络。 该网络包括用于支持多个独立用户节点的光波通信介质(10) 和多个N个网络接口单元(NIU)(11)。 每个NIU连接到光波介质和一个或多个单独的用户节点,并且包括一个分配器部分(28-35)和一个接收机部分(20-27),每个固定分配器分别在单个信道上发送和接收 或者到达或来自网络的其他NIU的多个单独信道。 在网络的一个实施例的连接模式中,NIU被划分为k个pK NIU组,使得第一组pK NIU的每个NIU能够通过固定分配的单个信道或者任何或全部p 单独的通道,基于完美的随机播放模式的泛化,到第二组的相关联的p个独立NIU中的优选的一个或全部。 这种技术允许网络的所有NIU通过单跳或多跳跳跃与所有其他NIU进行通信,其中pK NIU的后续组中的NIU用作中间重传单元。
    • 34. 发明授权
    • N-by-N
    • 用于高性能分组交换系统的N-by N“knockout”开关
    • US4760570A
    • 1988-07-26
    • US65688
    • 1987-06-19
    • Anthony AcamporaMichael G. HluchyjYu S. Yeh
    • Anthony AcamporaMichael G. HluchyjYu S. Yeh
    • H04L12/56H04Q11/04
    • H04L49/25H04L49/103H04L49/201H04L49/254H04L49/3027H04L49/40
    • The present invention relates to an N-input, N-output "Knockout" packet switch (11) which uses decentralized control and distributed routing. More particularly, within the switch, the N input signals comprising fixed-length packets propagate along separate broadcast buses (14) to each of N bus interface units (15) which include N packet filters (20), a concentrator (21) and a shared buffer (22). Each bus interface unit is associated with a separate one of the N outputs (12) of the switch, and the N packet filters therein are each associated with a separate one of the N broadcast buses for detecting if a packet on the associated bus is destined for the associated switch output. The concentrator is used to reduce the number of separate buffers needed to receive packets which may arrive simultaneously and are destined for the associated output. Contending packets at the output of the concentrator are stored in the shared buffer before placement on the output line on a first-in, first-out basis. The lost packet rate of the "Knockout" switch can be made as small as desired and latency of packets in the switch is the smallest achievable by any comparable switch.
    • 本发明涉及使用分散控制和分布式路由的N输入,N输出“Knockout”分组交换机(11)。 更具体地,在交换机内,包括固定长度分组的N个输入信号沿独立的广播总线(14)传播到N个总线接口单元(15)中的每一个,其包括N个分组滤波器(20),集中器(21)和 共享缓冲器(22)。 每个总线接口单元与交换机的N个输出(12)中的单独一个相关联,并且其中的N个分组滤波器各自与N个广播总线中的单独一个相关联,用于检测相关总线上的分组是否发往 为关联的开关输出。 集线器用于减少接收可能同时到达并发往相关输出的分组所需的单独缓冲器的数量。 集中器输出端的数据包竞争存储在共享缓冲区中,先于先出先出,放在输出线路上。 “Knockout”开关的丢包率可以根据需要变小,并且交换机中的数据包的延迟是任何类似交换机都能达到的最小值。