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：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：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：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：US20100067913A1

公开(公告)日：2010-03-18

申请号：US12388020

申请日：2009-02-18

申请人： Masao Niibe ,  Tohru Kazawa ,  Takeshi Kiyose ,  Ryosuke Nishino

发明人： Masao Niibe ,  Tohru Kazawa ,  Takeshi Kiyose ,  Ryosuke Nishino

IPC分类号： H04J14/08

CPC分类号： H04Q11/0067 ,  H04B10/70 ,  H04J3/0652 ,  H04J3/0682 ,  H04Q2011/0064 ,  H04Q2011/0079

摘要： In a passive optical network system in which signals from a master station to plural slave stations are time-division multiplexed and transmitted, the slave stations different in transmission speed are mixedly contained. The master station (OLU) performs ranging for each transmission speed, and grasps all the slave stations different in transmission speed for each transmission speed, and generates a frame including signals of a suitable transmission speed corresponding to each slave station. When the frame is generated, in a downstream signal in which signals of plural transmission speeds are mixed, a dummy signal is set at a place where the transmission speed is changed, and a time necessary to follow a change in level of a received signal due to a change in optical level caused when the transmission speed is changed is secured. Thereby, each ONU avoids a reception error occurring in the time necessary to follow.

摘要翻译： 在从主站到多个从站的信号被时分复用和发送的无源光网络系统中，传输速度不同的从站被混合地包含。 主站（OLU）为每个传输速度执行测距，并且掌握每个传输速度的传输速度不同的所有从站，并且生成包括与每个从站对应的合适传输速度的信号的帧。 当生成帧时，在混合有多个传输速度的信号的下行信号中，将虚拟信号设置在传输速度改变的地方，并且跟随接收信号的电平变化所需的时间 导致当传输速度改变时引起的光学水平的变化。 因此，每个ONU避免在所需的时间内发生的接收错误。

公开(公告)号：US20140098676A1

公开(公告)日：2014-04-10

申请号：US14009768

申请日：2012-04-02

申请人： Akihiko Tsuchiya ,  Masao Niibe ,  Takayuki Kanno ,  Yoshihiro Ashi

发明人： Akihiko Tsuchiya ,  Masao Niibe ,  Takayuki Kanno ,  Yoshihiro Ashi

IPC分类号： H04L12/26

CPC分类号： H04L43/0811 ,  H04L12/4641 ,  H04L49/555

摘要： When a communications carrier uses another company's network as a relay network, it is necessary to monitor the health of and to perform maintenance for the lines from end to end in the other company's network as well as the network managed by this carrier. Terminal devices capable of terminating a CCM frame or other OAM signal are installed in users bases, and the health is monitored from end to end between the bases. Furthermore, a control device that controls the terminal devices is installed in the VLAN network used by the user, and remote control of the terminal devices is implemented from the controller. Table information held by the controller is managed collectively under the leadership of an operator, and information about the subordinate terminal devices connected to the controller is reported to the operator on the basis of results of the MAC learning by the controller. IDs managed by the carrier are specified in the connectivity monitoring segments by the operator, and connectivity can be monitored segment by segment.

摘要翻译： 当通信运营商使用另一家公司的网络作为中继网络时，需要监视其他公司网络中的端到端的健康状况，并对其进行维护，以及由该运营商管理的网络。 能够终止CCM帧或其他OAM信号的终端设备安装在用户基站中，并且在基站之间从一端到另一端监视运行状况。 此外，控制终端设备的控制装置安装在用户使用的VLAN网络中，并从控制器实现终端设备的远程控制。 控制器持有的表信息在运营商的领导下进行集中管理，根据控制器的MAC学习结果向运营商报告有关连接到控制器的下属终端设备的信息。 由运营商管理的ID由运营商在连通性监控段中指定，可以逐段监控连通性。

公开(公告)号：US08184975B2

公开(公告)日：2012-05-22

申请号：US12388020

申请日：2009-02-18

申请人： Masao Niibe ,  Tohru Kazawa ,  Takeshi Kiyose ,  Ryosuke Nishino

发明人： Masao Niibe ,  Tohru Kazawa ,  Takeshi Kiyose ,  Ryosuke Nishino

IPC分类号： H04J14/00 ,  H04B10/00

CPC分类号： H04Q11/0067 ,  H04B10/70 ,  H04J3/0652 ,  H04J3/0682 ,  H04Q2011/0064 ,  H04Q2011/0079

摘要： In a passive optical network system in which signals from a master station to plural slave stations are time-division multiplexed and transmitted, the slave stations different in transmission speed are mixedly contained. The master station (OLU) performs ranging for each transmission speed, and grasps all the slave stations different in transmission speed for each transmission speed, and generates a frame including signals of a suitable transmission speed corresponding to each slave station. When the frame is generated, in a downstream signal in which signals of plural transmission speeds are mixed, a dummy signal is set at a place where the transmission speed is changed, and a time necessary to follow a change in level of a received signal due to a change in optical level caused when the transmission speed is changed is secured. Thereby, each ONU avoids a reception error occurring in the time necessary to follow.

摘要翻译： 在从主站到多个从站的信号被时分复用和发送的无源光网络系统中，传输速度不同的从站被混合地包含。 主站（OLU）为每个传输速度执行测距，并且掌握每个传输速度的传输速度不同的所有从站，并且生成包括与每个从站对应的合适传输速度的信号的帧。 当生成帧时，在混合有多个传输速度的信号的下行信号中，将虚拟信号设置在传输速度改变的地方，并且跟随接收信号的电平变化所需的时间 导致当传输速度改变时引起的光学水平的变化。 因此，每个ONU避免在所需的时间内发生的接收错误。