公开(公告)号：US08139950B2

公开(公告)日：2012-03-20

申请号：US12121229

申请日：2008-05-15

申请人： Masao Niibe ,  Tohru Kazawa ,  Yusuke Yajima ,  Takeshi Kiyose ,  Masahiko Mizutani

发明人： Masao Niibe ,  Tohru Kazawa ,  Yusuke Yajima ,  Takeshi Kiyose ,  Masahiko Mizutani

IPC分类号： H04B10/00 ,  H04J14/00 ,  H04J4/00 ,  H04J14/08

CPC分类号： H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0084

摘要： A passive optical network system (PON) has a plurality of OLTs and ONUs with different transmission rates. OLTs with different transmission rates share information of priority frames and destinations, and determine timing for frame transmission to ONUs so that the signal from each of the OLTs does not collide when multiplied in a splitter. OLTs transmit the data to the ONU as a burst signal to prevent the signals with different rates from colliding. ONU acquires the information of the following burst frames. ONU receives only the signal addressed to the own ONU or with the transmission rate of own ONU, therefore errors in ONUs can be avoided. OLT receives only the signal with the transmission rate of own OLT from ONUs based on the transmission timing from the ONUs shared by the line terminators, errors in OLTs can be avoided.

摘要翻译： 无源光网络系统（PON）具有多个具有不同传输速率的OLT和ONU。 具有不同传输速率的OLT共享优先级帧和目的地的信息，并确定向ONU发送帧的定时，使得来自每个OLT的信号在分离器中相乘时不会发生冲突。 OLT将数据作为突发信号发送到ONU，以防止具有不同速率的信号相互冲突。 ONU获取以下突发帧的信息。 ONU仅接收寻址到自己的ONU的信号或以自己的ONU的传输速率，因此可以避免ONU中的错误。 基于来自线路终端机共享的ONU的传输定时，OLT仅从ONU接收到自身OLT的传输速率的信号，可以避免OLT中的错误。

公开(公告)号：US20090202242A1

公开(公告)日：2009-08-13

申请号：US12121229

申请日：2008-05-15

申请人： Masao NIIBE ,  Tohru Kazawa ,  Yusuke Yajima ,  Takeshi Kiyose ,  Masahiko Mizutani

发明人： Masao NIIBE ,  Tohru Kazawa ,  Yusuke Yajima ,  Takeshi Kiyose ,  Masahiko Mizutani

IPC分类号： H04J14/00

CPC分类号： H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0084

摘要： A passive optical network system (PON) has a plurality of OLTs and ONUs with different transmission rates. OLTs with different transmission rates share information of priority frames and destinations, and determine timing for frame transmission to ONUs so that the signal from each of the OLTs does not collide when multiplied in a splitter. OLTs transmit the data to the ONU as a burst signal to prevent the signals with different rates from colliding. ONU acquires the information of the following burst frames. ONU receives only the signal addressed to the own ONU or with the transmission rate of own ONU, therefore errors in ONUs can be avoided. OLT receives only the signal with the transmission rate of own OLT from ONUs based on the transmission timing from the ONUs shared by the line terminators, errors in OLTs can be avoided.

摘要翻译： 无源光网络系统（PON）具有多个具有不同传输速率的OLT和ONU。 具有不同传输速率的OLT共享优先级帧和目的地的信息，并确定向ONU发送帧的定时，使得来自每个OLT的信号在分离器中相乘时不会发生冲突。 OLT将数据作为突发信号发送到ONU，以防止具有不同速率的信号相互冲突。 ONU获取以下突发帧的信息。 ONU仅接收寻址到自己的ONU的信号或以自己的ONU的传输速率，因此可以避免ONU中的错误。 基于来自线路终端机共享的ONU的传输定时，OLT仅从ONU接收到自身OLT的传输速率的信号，可以避免OLT中的错误。

公开(公告)号：US08145055B2

公开(公告)日：2012-03-27

申请号：US12389675

申请日：2009-02-20

申请人： Masao Niibe ,  Masahiko Mizutani ,  Tohru Kazawa

发明人： Masao Niibe ,  Masahiko Mizutani ,  Tohru Kazawa

IPC分类号： H04B10/08 ,  H04B17/00

CPC分类号： H04Q11/0067 ,  H04J3/0682 ,  H04J14/0226 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282 ,  H04Q2011/0064 ,  H04Q2011/0079

摘要： In a PON, at the time of ranging, an OLT (a master station) measures an optical level of a signal from at least an ONU (a slave station) capable of communicating at plural transmission speeds. The OLT determines the transmission speed applied to the ONU according to the measured level. Incidentally, the ONU may measure an optical level of a ranging request signal and determine the transmission speed. At a normal operation, when the OLT sends information of plural different transmission speeds to the ONU, a timing when a next frame reaches and transmission speed information are notified to the ONU. Based on the timing, the ONU receives only data of the transmission speed that can be handled. Besides, the OLT switches the transmission speed to receive data based on a grant designation transmitted from the plural ONUs to the OLT.

摘要翻译： 在PON中，在测距时，OLT（主站）测量来自至少能够以多个传输速度进行通信的ONU（从站）的信号的光级。 OLT根据测量级别确定应用于ONU的传输速度。 顺便提及，ONU可以测量测距请求信号的光级，并确定传输速度。 在正常操作中，当OLT向ONU发送多个不同传输速度的信息时，下一帧到达的定时和传输速度信息被通知给ONU。 基于定时，ONU仅接收可以处理的传输速度的数据。 此外，OLT根据从多个ONU发送到OLT的授权指定，切换传输速度以接收数据。

公开(公告)号：US08824894B2

公开(公告)日：2014-09-02

申请号：US13221792

申请日：2011-08-30

申请人： Masao Niibe ,  Masahiko Mizutani

发明人： Masao Niibe ,  Masahiko Mizutani

IPC分类号： H04J14/08 ,  H04Q11/00 ,  H04J3/16

CPC分类号： H04J3/1694 ,  H04J2203/0058 ,  H04J2203/0066 ,  H04Q11/0067 ,  H04Q2011/0079

摘要： When an ONU accommodating range is enlarged, and ONUs shorter and ONUs longer in a communication path to an OLT are accommodated in a PON at the same time, there is a need to change a light intensity at the time of transmitting a downstream signal in order that both of the ONUs receive a downstream signal from the OLT. When a near-end ONU receives a signal having a light intensity necessary to communicate between the OLT and a far-end ONU, there arises such a problem that the light intensity is as high as an ONU receiver fails. In order to eliminate the ONU failure of the above problem, prior to transmission of the downstream signal, a downstream signal transmission schedule (downstream light intensity map) is notified to all of the ONUs. An optical transceiver of the OLT has a function of adjusting an output light intensity, and adjusts the light intensity to values receivable by the individual ONUs when the signal arrives at the respective ONUs according to route distances to the respective ONUs.

摘要翻译： 当ONU容纳范围被放大并且在OLT的通信路径中更短的ONU和更长的ONU在同一时间被容纳在PON中时，需要依次改变发送下行信号时的光强度 两个ONU都接收到来自OLT的下行信号。 当近端ONU接收到具有在OLT和远端ONU之间通信所需的光强度的信号时，出现这样的问题：光强度与ONU接收机失败一样高。 为了消除上述问题的ONU故障，在发送下行信号之前，向所有的ONU通知下行信号发送调度（下行光强度图）。 OLT的光收发器具有调整输出光强度的功能，并且当根据到相应ONU的路线距离信号到达相应ONU时，将光强度调整为各个ONU可接收的值。

公开(公告)号：US20120087662A1

公开(公告)日：2012-04-12

申请号：US13240634

申请日：2011-09-22

申请人： Katsuyoshi Suzuki ,  Masao Niibe ,  Shinya Fujioka ,  Masahiko Mizutani

发明人： Katsuyoshi Suzuki ,  Masao Niibe ,  Shinya Fujioka ,  Masahiko Mizutani

IPC分类号： H04J14/00

CPC分类号： H04J14/0282 ,  H04J3/1694 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0256 ,  H04J14/026 ,  H04Q11/0067 ,  H04Q2011/0079

摘要： The OLT manages information of optical intensity and communication bit rate receivable by each ONU, and transmits a signal at suitable optical intensity and a bit rate. The OLT decides a signal transmission plan for each ONU according to a status of accumulated information waiting to be transmitted in the OLT's own device buffer, and inserts the signal transmission plan in a header or payload of a downlink frame, thereby notifying the ONUs of the information prior to transmitting accumulated information (primary signal). The ONU recognizes the signal transmission plan of the OLT according to the time information in a downlink intensity map, receives only a signal having the optical intensity and bit rate suitable for the ONU's own device, and blocks other signals.

摘要翻译： OLT管理每个ONU可接收的光强度和通信比特率信息，并以适当的光强度和比特率发送信号。 OLT根据等待在OLT自己的设备缓冲区中发送的累计信息的状态，决定每个ONU的信号传输计划，并将信号传输计划插入到下行链路帧的报头或有效载荷中，从而通知ONU的 发送累积信息之前的信息（主信号）。 ONU根据下行链路强度图中的时间信息识别OLT的信号传输计划，仅接收具有适合于ONU本身设备的光强度和比特率的信号，并阻止其他信号。

公开(公告)号：US08189571B2

公开(公告)日：2012-05-29

申请号：US11339449

申请日：2006-01-26

申请人： Masahiko Mizutani ,  Yoshihiro Ashi ,  Masayuki Takase ,  Atsushi Iwamura ,  Akihiko Tanaka ,  Hideki Endo ,  Tohru Kazawa

发明人： Masahiko Mizutani ,  Yoshihiro Ashi ,  Masayuki Takase ,  Atsushi Iwamura ,  Akihiko Tanaka ,  Hideki Endo ,  Tohru Kazawa

IPC分类号： H04L12/66

CPC分类号： H04L45/04 ,  H04J3/1617 ,  H04J2203/0083

摘要： An interconnection between fully synchronous networks and next-generation frame communications networks is disclosed. A means of bidirectional frame format conversion between a synchronous multiplexing system and a logical multiplexing system is provided, along with a method of transmitting data between different networks on a path as if it were being transmitted in the same network. Further, when converting network control information in an STM network into data suitable for a packet network, even across the boundary of a synchronous multiplexing system and a logical multiplexing system, a unified communication management means is provided over the whole path.

摘要翻译： 公开了完全同步网络和下一代帧通信网络之间的互连。 提供了在同步多路复用系统和逻辑多路复用系统之间的双向帧格式转换的方法，以及在路径上的不同网络之间传输数据的方法，如同在同一网络中传输一样。 此外，当将STM网络中的网络控制信息转换为适用于分组网络的数据时，甚至跨越同步复用系统和逻辑多路复用系统的边界，在整个路径上提供统一的通信管理装置。

公开(公告)号：US08391715B2

公开(公告)日：2013-03-05

申请号：US13072112

申请日：2011-03-25

申请人： Masao Niibe ,  Masahiko Mizutani ,  Shinya Fujioka

发明人： Masao Niibe ,  Masahiko Mizutani ,  Shinya Fujioka

IPC分类号： H04J14/00 ,  H04B10/04

CPC分类号： H04B10/0793

摘要： When a neighbor ONU receives a signal with light intensity high enough to secure communication between an OLT and a remote ONU, the light intensity may be excessively high to damage a receiver of the neighbor ONU. In order to avoid such a problem, each ONU is notified of a downstream signal transmission plan (downstream light intensity map) prior to transmission of a downstream signal. Each ONU receives the downstream light intensity map (light intensity transmission schedule of downstream signal) in advance. Thus, the neighbor ONU can block or attenuate an optical signal addressed to the remote ONU, and the remote ONU can determine normal operation even when the remote ONU cannot receive a signal addressed to the neighbor ONU. Thus, the remote ONU can be prevented from issuing a wrong error signal.

摘要翻译： 当邻居ONU接收到具有足够高的光强度以保证OLT和远程ONU之间的通信的信号时，光强度可能过高而损坏相邻ONU的接收机。 为了避免这样的问题，在发送下行信号之前，向各ONU通知下行信号发送规划（下行光强度图）。 每个ONU预先接收下游光强度图（下游信号的光强度传输调度）。 因此，邻居ONU可以阻塞或衰减寻址到远程ONU的光信号，并且即使当远程ONU不能接收到寻址到相邻ONU的信号时，远程ONU也可以确定正常操作。 因此，可以防止远程ONU发出错误的错误信号。

公开(公告)号：US07773880B2

公开(公告)日：2010-08-10

申请号：US12076897

申请日：2008-03-25

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：US20100086304A1

公开(公告)日：2010-04-08

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 ,  H04J14/02 ,  H04B10/00

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, and 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 载波波长不同于其他光发射机的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，以及接收装置，包括接收 来自光纤的波分复用CDMA光信号和连接到光接收机并且扩展码不同的多个解扩器，其中每个解扩器从光学器件的输出信号再现对应于其扩展码的CDMA信号 接收器。

公开(公告)号：US07630637B2

公开(公告)日：2009-12-08

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。