公开(公告)号：US07120160B2

公开(公告)日：2006-10-10

申请号：US10042351

申请日：2002-01-11

申请人： Masayuki Takase ,  Hidehiro Toyoda ,  Norihiko Moriwaki

发明人： Masayuki Takase ,  Hidehiro Toyoda ,  Norihiko Moriwaki

IPC分类号： H04L12/56

CPC分类号： H04L49/3045 ,  H04L49/101 ,  H04L49/254 ,  H04L49/50

摘要： A packet switching system arbitrates between Virtual Output Queues (VoQ) in plural input buffers, so as to grant the right of transmitting data to a crossbar switch to some of the VoQs by taking both an output data interval of a VoQ and the queue length of a VoQ as parameters. The system suppresses the delay time of the segment of a VoQ having a high load, thereby preventing buffers from overflowing; and, also, the system permits a VoQ having a low load to transmit segments under no influence of the VoQ that has a high load and is just reading out the segment.

摘要翻译： 分组交换系统在多个输入缓冲器中的虚拟输出队列（VoQ）之间进行仲裁，以便通过同时获取VoQ的输出数据间隔和VoQ的队列长度来授予向某些VoQ发送数据到交叉开关的权利 一个VoQ作为参数。 该系统抑制具有高负载的VoQ的段的延迟时间，从而防止缓冲器溢出; 并且，该系统还允许具有低负载的VoQ在没有高负载的VoQ的影响下传输段，并且刚刚读出该段。

公开(公告)号：US06999413B2

公开(公告)日：2006-02-14

申请号：US09940476

申请日：2001-08-29

申请人： Norihiko Moriwaki ,  Hidehiro Toyoda ,  Masayuki Takase

发明人： Norihiko Moriwaki ,  Hidehiro Toyoda ,  Masayuki Takase

IPC分类号： G01R31/08

CPC分类号： H04L49/101 ,  H04L49/1523 ,  H04L49/1576 ,  H04L49/3027 ,  H04L49/3045 ,  H04L49/3072 ,  H04L49/45

摘要： A packet switch has a switch section formed by a plurality of crossbar switch planes and plurality of interfaces, and each interface outputs in parallel input packets in block units to the plurality of crossbar switch planes in response to signals from a scheduler, wherein when n crossbar switch planes can be mounted on the packet switch, each interface allocates time slots corresponding to the n crossbar switch planes or when a switch plane is additionally mounted, a block is read at a time slot corresponding to the additional switch plane or when a switch plane is stopped from working, an idle time slot is used to prevent a block from being output to the switch plane which is unused.

公开(公告)号：US07023799B2

公开(公告)日：2006-04-04

申请号：US10079583

申请日：2002-02-22

申请人： Masayuki Takase ,  Norihiko Moriwaki ,  Mitsuhiro Wada ,  Hiroaki Kasahara ,  Takahiko Kozaki

发明人： Masayuki Takase ,  Norihiko Moriwaki ,  Mitsuhiro Wada ,  Hiroaki Kasahara ,  Takahiko Kozaki

IPC分类号： H04L12/56

CPC分类号： H04L12/5602 ,  H04L47/22

摘要： A traffic shaper comprises a bandwidth controller 40 having a plurality of leaky bucket units 41-1 to 41-n prepared in correspondence with buffer memories 20-1 to 20-n, and an output queue designation unit 43 for specifying a buffer memory from which a packet is to be read out. Each of the leaky bucket units 41 has a level counter 416 for decrementing the count value at a predetermined rate, and a level increaser 411 to 417 for increasing the count value of the level counter by a value proportional to the product of the length of a transmitted packet and a unitary increment value which is variable depend on the current count value of the level counter.

摘要翻译： 流量整形器包括具有对应于缓冲存储器20-1至20-n准备的多个泄漏桶单元41-1至41-n的带宽控制器40以及用于指定缓冲存储器的输出队列指定单元43， 要读出一个数据包。 每个漏斗单元41具有用于以预定速率递减计数值的电平计数器416和用于将电平计数器的计数值增加与水平计数器的长度成比例的值的电平增加器411至417 发送数据包和可变的单位增量值取决于电平计数器的当前计数值。

公开(公告)号：US08320238B2

公开(公告)日：2012-11-27

申请号：US12479201

申请日：2009-06-05

申请人： Masayuki Takase ,  Hideki Endo ,  Taisuke Ueta ,  Takayuki Kanno

发明人： Masayuki Takase ,  Hideki Endo ,  Taisuke Ueta ,  Takayuki Kanno

IPC分类号： H04L1/00 ,  H04L12/26 ,  H04L12/28 ,  H04L12/56

CPC分类号： H04L12/1868 ,  H04L41/0668 ,  H04L45/00 ,  H04L45/16 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50

摘要： Provided is a network system including a start device and multiple end devices. A point-to-point (P-to-P) logical path is set to be used for unicast communication between the start device and each of the end devices. A first point-to-multipoint (P-to-M) logical path and a second P-to-M logical path are set to be used for multicast communication from the start device to the multiple end devices. The start device transmits data over the first P-to-M logical path. When one of the end devices detects a defect along the first P-to-M logical path, the end device that has detected the defect transmits a switch request over the P-to-P logical path set between this end device and the start device. The start device receives the switch request and transmits data over the second P-to-M logical path.

摘要翻译： 提供了一种包括启动设备和多个终端设备的网络系统。 点对点（P到P）逻辑路径被设置为用于启动设备和每个终端设备之间的单播通信。 将第一点对多点（P到M）逻辑路径和第二P到M逻辑路径设置为用于从起始设备到多端设备的多播通信。 起始装置通过第一P-M逻辑路径发送数据。 当终端设备中的一个检测到沿着第一P-to-M逻辑路径的缺陷时，检测到缺陷的终端设备通过在该终端设备和起始设备之间设置的P-to-P逻辑路径发送切换请求 。 启动设备接收切换请求，并通过第二个P-to-M逻辑路径发送数据。

公开(公告)号：US08290369B2

公开(公告)日：2012-10-16

申请号：US12379281

申请日：2009-02-18

申请人： Kenichi Sakamoto ,  Yoshihiro Ashi ,  Tohru Kazawa ,  Ryosuke Nishino ,  Masayuki Takase ,  Masahiko Mizutani

发明人： Kenichi Sakamoto ,  Yoshihiro Ashi ,  Tohru Kazawa ,  Ryosuke Nishino ,  Masayuki Takase ,  Masahiko Mizutani

IPC分类号： H04B10/00

CPC分类号： H04J3/1694 ,  H04J3/0682

摘要： An optical access system capable of avoiding cutoffs or interruption in the periodically transmitted signals that occur during the ranging time is provided. A first method to avoid signal cutoffs is to stop periodic transmit signals at the transmitter during the ranging period, and transmit all the periodic transmit signals together when the ranging ends, and buffer the signals at the receiver to prepare for ranging. A second method is to fix definite periods ahead of time for performing ranging, then cluster the multiple periodic transmit signals together in sets at the transmitter and send them, and then disassemble those sets back into signals at the receiver. The transmitting and receiving is then controlled so that the transmit periods do not overlap with the ranging periods. In this way an optical access system is provided that can send and receive signals requiring periodic transmissions without interruption even during ranging operation.

摘要翻译： 提供一种能够避免在测距时间期间发生的周期性发射信号中的截断或中断的光接入系统。 避免信号截止的第一种方法是在测距周期期间在发射机处停止周期性发射信号，并且在测距结束时将所有周期性发射信号传输到一起，并且在接收机处缓冲信号以准备测距。 第二种方法是提前确定一段时间进行测距，然后将多个周期性发射信号集合在一起，并将其发送给发射机，然后将它们分组回接收机的信号。 然后控制发送和接收，使得发送周期不与测距周期重叠。 以这种方式，提供光接入系统，即使在测距操作期间也可以发送和接收需要周期性传输的信号而不中断。

公开(公告)号：US08243745B2

公开(公告)日：2012-08-14

申请号：US12699221

申请日：2010-02-03

申请人： Hideki Endo ,  Akihiko Tanaka ,  Takayuki Kanno ,  Masayuki Takase ,  Taisuke Ueta

发明人： Hideki Endo ,  Akihiko Tanaka ,  Takayuki Kanno ,  Masayuki Takase ,  Taisuke Ueta

IPC分类号： H04L12/56 ,  G06F3/00

CPC分类号： H04L49/9015 ,  H04L49/90

摘要： A packet communication apparatus includes a frame buffer of a linked list method and holds chain information and buffer size information, for structuring a linked list buffer for each user flow, in two areas consisting of an operation area and an update area. While usually in service, the buffer is structured by using the chain information in the operation area and the buffer size information in the same area such that the frame is read/written in the frame buffer. When the chain information in the update area and the buffer size information in the same area have been changed, a queue size is changed by reflecting the updated chain information and the updater buffer size information into the operation area, when both the read pointer and the write pointer respectively have gone around the buffer, or when there is no frame stored in the buffer.

摘要翻译： 分组通信装置包括链表列表方法的帧缓冲器，并且在由操作区域和更新区域组成的两个区域中保存用于为每个用户流构造链接列表缓冲器的链信息和缓冲器大小信息。 通常在使用中，通过使用操作区域中的链接信息和相同区域中的缓冲器大小信息来构造缓冲器，使得帧被读取/写入帧缓冲器。 当更新区域中的链路信息和相同区域中的缓冲器大小信息已经改变时，当读取指针和读取指针都被读取时，通过将更新的链接信息和更新的缓冲器大小信息反映到操作区域来改变队列大小 写指针分别绕过缓冲区，或者当没有帧存储在缓冲区中时。

公开(公告)号：US20090210553A1

公开(公告)日：2009-08-20

申请号：US12379280

申请日：2009-02-18

申请人： Masayuki Takase ,  Yoshihiro Ashi ,  Masahiko Mizutani ,  Tohru Kazawa ,  Kenichi Sakamoto ,  Taishi Shinagawa

发明人： Masayuki Takase ,  Yoshihiro Ashi ,  Masahiko Mizutani ,  Tohru Kazawa ,  Kenichi Sakamoto ,  Taishi Shinagawa

IPC分类号： G06F15/16

CPC分类号： H04L47/10 ,  H04L47/20 ,  H04L47/21 ,  H04L47/215 ,  H04L47/22 ,  H04Q11/0067 ,  H04Q2011/0064

摘要： A packet forwarding apparatus and network system for providing different types of bandwidth control services to the user; in which a packet forwarding apparatus for transferring data comprises an interface unit for sending and receiving packets, and a traffic shaper for controlling the packet transmission timing and a packet switch for sending an output to the interface unit as the destination of the received packet; and the traffic shaper uses a token bucket algorithm when transmitting a packet to guarantee the minimum frame rate, and uses a leaky bucket algorithm when limiting the peak frame rate.

摘要翻译： 一种分组转发装置和网络系统，用于向用户提供不同类型的带宽控制服务; 其中用于传送数据的分组转发装置包括用于发送和接收分组的接口单元，以及用于控制分组传输定时的流量整形器和用于向接口单元发送输出作为接收分组的目的地的分组交换机; 并且流量整形器在发送分组时使用令牌桶算法来保证最小帧速率，并且在限制峰值帧速率时使用泄漏桶算法。

公开(公告)号：US20090016366A1

公开(公告)日：2009-01-15

申请号：US12073766

申请日：2008-03-10

申请人： Hideki Endo ,  Masayuki Takase ,  Shikou Matsushima ,  Akihiko Tanaka ,  Takayuki Kanno ,  Yoshihiro Ashi

发明人： Hideki Endo ,  Masayuki Takase ,  Shikou Matsushima ,  Akihiko Tanaka ,  Takayuki Kanno ,  Yoshihiro Ashi

IPC分类号： H04L12/56

CPC分类号： H04L45/00 ,  H04L45/22 ,  H04L45/28

摘要： Disclosed herewith is a packet transfer apparatus that carries out 1+1 protection switching for traffics to be received variably in both length and cycle. The apparatus enables flows to be multiplexed and the link usage efficiency to be improved without generating any buffer overflow errors. The data transfer apparatus, upon receiving the third sequentially numbered data from the first communication route before receiving the preceding second sequentially numbered data, stores the received third data in a buffer. And upon receiving the second sequentially numbered data from the second communication route, the apparatus sends the second and third data sequentially. Then, upon receiving the third sequentially numbered data from the second communication route before receiving the second sequentially numbered data, the apparatus sends the third data when a predetermined waiting time expires.

摘要翻译： 这里公开了一种分组传送装置，其执行1 + 1保护切换以便在长度和周期中可变地接收业务。 该装置能够使流复用，并且链路使用效率得到改善，而不产生任何缓冲器溢出错误。 数据传送装置在接收到先前的第二顺序编号数据之前从第一通信路由接收到第三顺序编号的数据后，将接收的第三数据存储在缓冲器中。 并且在从第二通信路由接收到第二顺序编号的数据时，装置依次发送第二和第三数据。 然后，在接收到第二顺序编号数据之前从第二通信路由接收到第三顺序编号的数据后，当预定的等待时间到期时，装置发送第三数据。

公开(公告)号：US20070264017A1

公开(公告)日：2007-11-15

申请号：US11503246

申请日：2006-08-14

申请人： Masahiko Mizutani ,  Takeshi Shibata ,  Tohru Kazawa ,  Yoshihiro Ashi ,  Masanobu Kobayashi ,  Masayuki Takase

发明人： Masahiko Mizutani ,  Takeshi Shibata ,  Tohru Kazawa ,  Yoshihiro Ashi ,  Masanobu Kobayashi ,  Masayuki Takase

IPC分类号： H04J14/00

CPC分类号： H04J3/1694 ,  H04L12/185 ,  H04Q11/0066 ,  H04Q11/0067 ,  H04Q2011/0073 ,  H04Q2011/0079

摘要： Provided is an ONU that suppresses transmission of a useless multicast control message to a PON section and enables a communication bandwidth of the PON section to be effectively used. The ONU of the PON system has a multicast group management table that shows a correspondence between a multicast group identifier and an address of a user terminal participating in a multicast group. When the ONU receives a request message of participation in the multicast group from the user terminal, the ONU registers the correspondence between the multicast group identifier indicated by the received message and the user terminal address. A new received message is deleted without being sent to the OLT if another user terminal address is registered already, along with a correspondence with the same multicast group identifier, in the multicast group management table.

摘要翻译： 提供了抑制对PON部分的无用组播控制消息的发送的ONU，能够有效地使用PON部的通信带宽。 PON系统的ONU具有表示组播组标识与参与组播组的用户终端的地址的对应关系的组播组管理表。 当ONU从用户终端接收到参与组播组的请求消息时，ONU注册由接收到的消息指示的组播组标识符与用户终端地址之间的对应关系。 如果在多播组管理表中已经注册了另一个用户终端地址以及与同一组播组标识符的对应关系，则新的接收到的消息被删除而不被发送到OLT。

公开(公告)号：US20070237177A1

公开(公告)日：2007-10-11

申请号：US11702155

申请日：2007-02-05

申请人： Hideki Endo ,  Masahiko Mizutani ,  Masayuki Takase ,  Kenichi Sakamoto ,  Yoshihiro Ashi ,  Takayuki Kanno ,  Nobuyuki Yamamoto

发明人： Hideki Endo ,  Masahiko Mizutani ,  Masayuki Takase ,  Kenichi Sakamoto ,  Yoshihiro Ashi ,  Takayuki Kanno ,  Nobuyuki Yamamoto

IPC分类号： H04J3/22

CPC分类号： H04Q11/0067 ,  H04L47/115 ,  H04L47/263 ,  H04Q11/0071 ,  H04Q2011/0064

摘要： Disclosed herewith is a PON system and a bandwidth controlling method capable of controlling congestion with use of an upstream bandwidth in a PON section efficiently when congestion occurs in a gateway (GW) connected to an OLT. An OLT connected to a plurality of ONUs through a passive optical network (PON) and to a gateway (GW) through a communication line, when receiving a congestion occurrence notice indicating a congestion occurred output number from a GW, identifies the identifier of the ONU that is using a GW output line having the congestion output port number and shifts the bandwidth controlling of the PON section in a normal mode for allocating a bandwidth to each ONU normally to that in a bandwidth suppression mode for allocating a congestion time allowable bandwidth that is less than the current bandwidth to the ONU having the identified ONU identifier and a bandwidth to each of other ONUs according to its transmission queue length.

摘要翻译： 这里公开了一种PON系统和带宽控制方法，其能够在连接到OLT的网关（GW）中发生拥塞时有效地控制在PON部分中使用上行带宽的拥塞。 当从GW接收到指示发生拥塞发生拥塞的拥塞发生通知时，通过无线光网络（PON）连接到多个ONU并通过通信线路连接到网关（GW），识别ONU的标识符 正在使用具有拥塞输出端口号的GW输出线，并且以正常模式移动PON部分的带宽控制，以将每个ONU的带宽正常分配给带宽抑制模式中的带宽，以分配拥塞时间允许带宽 小于根据其传输队列长度具有所识别的ONU标识符的ONU的当前带宽和对于每个其他ONU的带宽。