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。

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：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：US20080166127A1

公开(公告)日：2008-07-10

申请号：US11819364

申请日：2007-06-27

申请人： Tohru Kazawa ,  Kenichi Sakamoto ,  Ryosuke Nishino

发明人： Tohru Kazawa ,  Kenichi Sakamoto ,  Ryosuke Nishino

IPC分类号： H04J14/02

CPC分类号： H04J14/0282 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025

摘要： In a PON system with WDM, at the time of initial setting, each ONU negotiates with an OLT, and automatically acquires a wavelength which can be used by the ONU. One wavelength for negotiation of assigned wavelength is fixed as a default, and a newly connected ONU first uses the wavelength. The OLT 200 includes a plurality of light sources for downstream communication. The ONU 300 includes a wavelength variable filter selectively receiving one of wavelengths of downstream communication, and a wavelength variable light source selectively emitting light of one of plural wavelengths for upstream communication. The ONU 300 uses a transmission wavelength (for example, λu32) for negotiation and transmits a wavelength assignment request 1000 to the OLT 200. The OLT 200 selects a wavelength λu1 to be assigned from unused wavelengths, and transmits wavelength information to the ONU 300. The OLT 200 and the ONU 300 communicates using the notified wavelengths.

摘要翻译： 在具有WDM的PON系统中，在初始设置时，每个ONU与OLT协商，并自动获取ONU可以使用的波长。 用于协调分配波长的一个波长作为默认值固定，并且新连接的ONU首先使用波长。 OLT 200包括用于下游通信的多个光源。 ONU300包括选择性地接收下游通信的波长之一的波长可变滤波器和选择性地发射多个波长中的一个的光的波长可变光源，用于上行通信。 ONU300使用传输波长（例如，lambdau 32）进行协商，并向OLT200发送波长分配请求1000。 OLT200从未使用的波长中选择要分配的波长lambdau 1，并向ONU300发送波长信息。 OLT200和ONU300使用所通知的波长进行通信。

公开(公告)号：US08184977B2

公开(公告)日：2012-05-22

申请号：US12979871

申请日：2010-12-28

申请人： Tohru Kazawa ,  Kenichi Sakamoto ,  Ryosuke Nishino

发明人： Tohru Kazawa ,  Kenichi Sakamoto ,  Ryosuke Nishino

IPC分类号： H04J14/00

CPC分类号： H04J3/1694 ,  H04J2203/0041 ,  H04J2203/0067 ,  H04J2203/0091 ,  H04Q11/0067 ,  H04Q2011/0064

摘要： In a GPON system conforming to ITU-T Recommendations G.984.3, an optical line terminal is provided which has an active bandwidth allocation function that preferentially puts small bandwidth signals in a particular segment of a frame, e.g., at a head of the frame, to prevent fragmentations that may occur particularly when allocating small bandwidths of about 100 kbits/s.

摘要翻译： 在符合ITU-T建议书G.984.3的GPON系统中，提供了一种光线路终端，其具有主动带宽分配功能，其优先将小带宽信号放置在帧的特定段中，例如在帧的头部， 以防止在分配大约100kbits / s的小带宽时可能发生的碎片。

公开(公告)号：US07873277B2

公开(公告)日：2011-01-18

申请号：US11819364

申请日：2007-06-27

申请人： Tohru Kazawa ,  Kenichi Sakamoto ,  Ryosuke Nishino

发明人： Tohru Kazawa ,  Kenichi Sakamoto ,  Ryosuke Nishino

IPC分类号： H04J14/00 ,  H04J14/02 ,  H04B10/20

CPC分类号： H04J14/0282 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025

摘要： In a PON system with WDM, at the time of initial setting, each ONU negotiates with an OLT, and automatically acquires a wavelength which can be used by the ONU. One wavelength for negotiation of assigned wavelength is fixed as a default, and a newly connected ONU first uses the wavelength. The OLT 200 includes a plurality of light sources for downstream communication. The ONU 300 includes a wavelength variable filter selectively receiving one of wavelengths of downstream communication, and a wavelength variable light source selectively emitting light of one of plural wavelengths for upstream communication. The ONU 300 uses a transmission wavelength (for example, λu32) for negotiation and transmits a wavelength assignment request 1000 to the OLT 200. The OLT 200 selects a wavelength λu1 to be assigned from unused wavelengths, and transmits wavelength information to the ONU 300. The OLT 200 and the ONU 300 communicates using the notified wavelengths.

摘要翻译： 在具有WDM的PON系统中，在初始设置时，每个ONU与OLT协商，并自动获取ONU可以使用的波长。 用于协调分配波长的一个波长作为默认值固定，并且新连接的ONU首先使用波长。 OLT 200包括用于下游通信的多个光源。 ONU300包括选择性地接收下游通信的波长之一的波长可变滤波器和选择性地发射多个波长中的一个的光的波长可变光源，用于上行通信。 ONU300使用发送波长（例如λu32）进行协商，并向OLT200发送波长分配请求1000. OLT200选择从未使用的波长分配的波长λu1，并向ONU300发送波长信息。 OLT200和ONU300使用所通知的波长进行通信。

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：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。