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。

公开(公告)号：US20070223490A1

公开(公告)日：2007-09-27

申请号：US11492832

申请日：2006-07-26

申请人： Masahiko Mizutani ,  Takeshi Shibata ,  Tohru Kazawa ,  Yoshihiro Ashi ,  Masanobu Kobayashi ,  Hideki Endo

发明人： Masahiko Mizutani ,  Takeshi Shibata ,  Tohru Kazawa ,  Yoshihiro Ashi ,  Masanobu Kobayashi ,  Hideki Endo

IPC分类号： H04L12/56

CPC分类号： H04Q11/0067 ,  H04Q2011/0064

摘要： A PON system capable of utilizing the bandwidth of an optical transmission channel in the PON section. In a PON system including an OLT and a plurality of ONUs, the OLT has: a downstream frame processing unit that removes at least part of the header information in a layer 2 header from a downstream frame received from a wide area network, and converts the remaining frame portion into a frame having a header specific to the PON section; and a downstream frame processing unit that extracts a downstream frame portion to be transferred to a user terminal, from a received frame from a PON, and adds the layer 2 header information deleted in the OLT.

摘要翻译： 一种能够利用PON部分中的光传输信道的带宽的PON系统。 在包括OLT和多个ONU的PON系统中，OLT具有：下游帧处理单元，从从广域网接收到的下行帧中去除层2报头中的头部信息的至少一部分，并将 剩余帧部分变成具有对PON部分特有的标题的帧; 以及从PON的接收帧中提取要传送到用户终端的下行帧部分的下行帧处理单元，并且将删除在OLT中的层2报头信息相加。

公开(公告)号：US06987733B2

公开(公告)日：2006-01-17

申请号：US09733095

申请日：2000-12-11

申请人： Hiroyuki Mukouyama ,  Yoshihiro Ashi ,  Atsushi Iwamura ,  Masanobu Kobayashi ,  Yasuhiko Numagami

发明人： Hiroyuki Mukouyama ,  Yoshihiro Ashi ,  Atsushi Iwamura ,  Masanobu Kobayashi ,  Yasuhiko Numagami

IPC分类号： H04J1/16 ,  H04L12/56

CPC分类号： H04L12/5602 ,  H04L12/5601 ,  H04L47/30 ,  H04L49/103 ,  H04L49/108 ,  H04L49/3045 ,  H04L2012/5648 ,  H04L2012/5651 ,  H04L2012/5675 ,  H04L2012/5679 ,  H04L2012/5681 ,  H04L2012/5685

摘要： An ATM communication apparatus having a buffer memory for storing cells received from each of input lines, a write control unit for writing each of the received cells into the buffer memory so that the cells stored in the buffer memory form cell queues corresponding to connections for each output line, a read control unit for reading out cells from each of the cell queues while guaranteeing a minimum cell rate predetermined for each connection within a range not exceeding a predetermined peak cell rate, and a unit for adding congestion indication to a cell read out from a cell queue of which stored cell amount exceeds a preset threshold.

摘要翻译： 一种具有用于存储从每个输入线接收的单元的缓冲存储器的ATM通信装置，用于将每个接收的单元写入缓冲存储器的写入控制单元，使得存储在缓冲存储器中的单元形成对应于每个 输出线，读取控制单元，用于在不超过预定峰值单元速率的范围内保证每个连接预定的最小单元速率，以及用于向已读出的单元添加拥塞指示的单元，从每个单元队列中读出单元; 从存储单元数量的单元队列超过预设阈值。

公开(公告)号：US5634097A

公开(公告)日：1997-05-27

申请号：US027643

申请日：1993-03-08

申请人： Yoshihiro Ashi ,  Toshihiko Fujita ,  Hiromi Ueda ,  Haruhiko Matsunaga

发明人： Yoshihiro Ashi ,  Toshihiko Fujita ,  Hiromi Ueda ,  Haruhiko Matsunaga

IPC分类号： H04L12/70 ,  H04Q11/04 ,  G06F11/00 ,  H04L12/56

CPC分类号： H04Q11/0478 ,  H04L2012/5623 ,  H04L2012/5626

摘要： A method and apparatus of tracing VP's (virtual paths) wherein operational information of VP connectors are collected through OAM (operation and maintenance) cells. The VP connectors establish a connection at a VP level within a network in which the cells are transferred in an ATM (asynchronous transfer mode). Each VP connector detects an OAM cell for VP tracing as received from another of the VP connectors, and judges if an area for affixing the operational information in the VP connector itself exists in the detected OAM cell. In the VP connector when the area exists, the detected OAM cell is specified to be the OAM cell for writing the operational information thereinto, and the specified OAM cell is sent out after affixing the operational information thereto. When the area does not exit, the OAM cell received from the other VP connector is sent out after indicating therein that the received OAM cell is not the rearmost cell, the OAM cell for the VP tracing is generated anew, and the generated cell is sent out after indicating therein that the generated OAM cell is the rearmost cell. Also the operational information is affixed to newly generated OAM cell.

摘要翻译： 追踪VP（虚拟路径）的方法和装置，其中通过OAM（操作和维护）单元收集VP连接器的操作信息。 VP连接器在网络中的VP级建立连接，其中小区在ATM（异步传输模式）中传输。 每个VP连接器检测到从另一个VP连接器接收到的用于VP跟踪的OAM小区，并且判断在所检测的OAM小区中是否存在用于附加VP连接器中的操作信息的区域。 在存在该区域的VP连接器中，检测到的OAM单元被指定为用于写入其中的操作信息的OAM单元，并且在将操作信息附加到其上之后发送指定的OAM单元。 当该区域不退出时，从其他VP连接器接收的OAM小区在其中指示接收到的OAM小区不是最后一个小区之后被发出，用于VP跟踪的OAM小区重新生成，并且生成的小区被发送 在其中指示所生成的OAM信元是最后一个信元。 操作信息也附加到新生成的OAM单元。

公开(公告)号：US5321688A

公开(公告)日：1994-06-14

申请号：US791504

申请日：1991-11-14

申请人： Yukio Nakano ,  Yoshihiro Ashi

发明人： Yukio Nakano ,  Yoshihiro Ashi

IPC分类号： H04L29/14 ,  H04L1/00 ,  H04L12/70 ,  H04Q11/04 ,  H04L1/24

CPC分类号： H04L1/0083 ,  H04Q11/0478 ,  H04L2012/5619 ,  H04L2012/5627

摘要： A method for transmitting virtual path failure information in an asynchronous transfer mode network the method includes performing search against a table storing virtual paths being used for generating failure indicative cells for respective ones of the virtual paths when failure of a transmission line is detected. The generated failure indicative cells are transmitted to all of the other apparatuses connected in downstream signal transmitting directions through the virtual path sequentially for a number of predetermined times, and subsequently, intermittently with an interval of a given period of time. When failure is removed, a normal cell is immediately transmitted.

摘要翻译： 一种用于在异步传输模式网络中发送虚拟路径故障信息的方法，该方法包括当检测到传输线路故障时，针对存储虚拟路径的表执行搜索，所述虚拟路径用于在虚拟路径中的相应虚拟路径生成故障指示小区。 所生成的故障指示单元通过虚拟路径顺序地传送到连续在下游信号发送方向上的所有其他设备数个预定时间，并且随后以给定时间间隔间歇地发送。 当故障被去除时，正常的单元被立即传送。

公开(公告)号：US5038351A

公开(公告)日：1991-08-06

申请号：US339813

申请日：1989-04-18

申请人： Kazutaka Sakai ,  Yoshihiro Ashi

发明人： Kazutaka Sakai ,  Yoshihiro Ashi

IPC分类号： H03M5/06 ,  H03M5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L7/04 ,  H04L7/08 ,  H04L25/49

CPC分类号： H04L7/04 ,  H03M5/145 ,  H04L7/0337

摘要： A CMI block synchronization circuit includes a clock deriving circuit, CMI decoding circuit, signal selection determining circuit and a selection circuit. In the clock deriving circuit, a clock CLK.sub.o having the same phase as a binary signal and a clock CLK.sub..pi. having a phase which is different 180.degree. from the clock CLK.sub.o are derived from an inputted CMI code signal. In the CMI decoding circuit, the inputted CMI code signal is decoded by using the clocks derived and violating bits are detected. In the signal selection determining circuit, the clocks CLK.sub.o and CLK.sub..pi. are counted respectively. Only when one of the count values is equal to or higher than a setting value and another count value is lower than another setting value is it regarded that a block asynchronization is caused in decoding the CMI code signal. In this case, the decoded output being selected until that time is changed over to another decoded output, whereby the block synchronization is retained even during burst errors.

摘要翻译： CMI块同步电路包括时钟导出电路，CMI解码电路，信号选择确定电路和选择电路。 在时钟导出电路中，从输入的CMI码信号导出与二进制信号具有相同相位的时钟CLKo和具有与时钟CLKo不同180°的相位的时钟CLK pi。 在CMI解码电路中，通过使用导出的时钟对所输入的CMI码信号进行解码，检测出违反位。 在信号选择确定电路中，分别计数时钟CLKo和CLK pi。 只有当其中一个计数值等于或高于设定值，另一个计数值低于另一设定值时，认为在对CMI代码信号进行解码时引起块异步。 在这种情况下，选择直到那个时间的解码输出被转换到另一解码输出，由此即使在突发错误期间也保持块同步。

公开(公告)号：US20130182559A1

公开(公告)日：2013-07-18

申请号：US13553631

申请日：2012-07-19

申请人： Shinya Fujioka ,  Yoshihiro Ashi ,  Masahiko Mizutani ,  Hideki Endo

发明人： Shinya Fujioka ,  Yoshihiro Ashi ,  Masahiko Mizutani ,  Hideki Endo

IPC分类号： H04L12/24

CPC分类号： H04L41/0668 ,  H04L43/0817

摘要： A transmission network is comprised of a network management system for collectively managing and controlling a plurality of transmission devices coupled mutually through transmission routes and the transmission network as well. The network management system includes a plane management table adapted to manage transmission planes defined as a set of paths in the transmission network, and the plane management table has the function to set and manage a transmission plane (working plane) applied during normal operation and besides, a single or a plurality of transmission planes (protection planes) applicable in the event of occurrence of a fault in the transmission network. Then, when a fault occurs in the transmission network, the network management system changes the applied plane to a suitable transmission plane.

公开(公告)号：US08457012B2

公开(公告)日：2013-06-04

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： G01R31/08 ,  H04W4/00 ,  H04L12/28

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.

公开(公告)号：US08374504B2

公开(公告)日：2013-02-12

申请号：US12444280

申请日：2006-10-06

申请人： Masahiko Mizutani ,  Yoshihiro Ashi ,  Shinya Sasaki ,  Tohru Kazawa

发明人： Masahiko Mizutani ,  Yoshihiro Ashi ,  Shinya Sasaki ,  Tohru Kazawa

IPC分类号： H04J14/00 ,  H04J4/00 ,  H04J14/02 ,  H04B10/12

CPC分类号： H04J14/0282 ,  H04B1/707

摘要： A transmitting apparatus includes a plurality of code spreaders different in spreading code, a reception processing unit that selectively distributes transmission data to the plurality of code spreaders, a plurality of optical transmitters each of which that transmit a code-spread signal to an optical fiber as a CDMA optical signal of a carrier wavelength different from that of the other optical transmitters, and a signal multiplexing unit that selectively supplies outputs of the plurality of code spreaders to the plurality of optical transmitters. A receiving apparatus includes an optical receiver that receives a wavelength-division-multiplexed CDMA optical signal from the optical fiber, and a plurality of despreaders connected to the optical receiver and different in spreading code, wherein each of the despreaders reproduces a CDMA signal corresponding to its spreading code from an output signal of the optical receiver.

摘要翻译： 发送装置包括扩展码不同的多个码扩展器，选择性地将发送数据分配给多个代码扩展器的接收处理单元，多个光发送器，每个光发送器将码扩展信号发送到光纤，如 与其他光发射机不同的载波波长的CDMA光信号，以及选择性地将多个码扩展器的输出提供给多个光发射机的信号复用单元。 接收装置包括从光纤接收波分复用CDMA光信号的光接收机，以及连接到光接收机并且扩展码不同的多个解扩器，其中每个解扩器再现对应于 其扩展码来自光接收机的输出信号。