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1. 发明授权

US08554075B2 Communication system, subscriber accommodating apparatus and communication method 失效
标题翻译：通信系统，用户收纳设备和通信方法
公开(公告)号：US08554075B2
公开(公告)日：2013-10-08
申请号：US13144253
申请日：2009-01-13
申请人： Masahiko Mizutani , Yusuke Yajima , Nobuyuki Yamamoto , Yoshihiro Ashi
发明人： Masahiko Mizutani , Yusuke Yajima , Nobuyuki Yamamoto , Yoshihiro Ashi
IPC分类号： H04J14/00 , H04J14/02
CPC分类号： H04J14/0227 , H04L43/0817 , H04L43/0852 , H04L45/22 , H04L45/28 , H04Q11/0067 , H04Q2011/0081
摘要： Switching process at the occurrence of a path trouble is performed more quickly to reduce the number of packet discards during a traffic transition from a currently used system path to a standby system path within a section to be protected. An OLT (210-W) refers to the DBA information of a PON section and, if receiving no CCM frame at a timing at which the same should be received, then determines that some trouble has occurred on the path (S801) and transmits, to an OAM-compliant NE (200-Z), an application-for-switching frame (1501) to notify the OAM-compliant NE (200-Z) of the abnormal condition. The OAM-compliant NE (200-Z) monitors the occurrence of the trouble within the PON section nearly in real time, starts a switching process (S802) and generates and transmits a standby-system delivery request (321) (S302, S803). An OAM-compliant NE (200-A) switches the communication path to the standby-system passing through an OLT (210-P).
摘要翻译：在发生路径故障时的切换过程被执行得更快以减少从当前使用的系统路径到要保护的区段内的备用系统路径的业务转换期间的丢弃丢弃数量。 OLT（210-W）是指PON部分的DBA信息，并且如果在接收相同的定时不接收到CCM帧，则确定在路径上发生了一些故障（S801）到符合OAM的NE（200-Z），用于切换交换帧（1501）的OAM兼容NE（200-Z）通知异常状态。符合OAM标准的NE（200-Z）几乎实时监控PON部分内的故障发生，开始切换处理（S802），生成并发送备用系统传送请求（321）（S302，S803）。符合OAM标准的网元（200-A）将通信路径切换到通过OLT（210-P）的备用系统。

2. 发明授权

US08249458B2 Optical communication system and method for operating the same 有权
标题翻译：光通信系统及其操作方法
公开(公告)号：US08249458B2
公开(公告)日：2012-08-21
申请号：US12638383
申请日：2009-12-15
申请人： Masahiko Mizutani , Yusuke Yajima
发明人： Masahiko Mizutani , Yusuke Yajima
IPC分类号： H04J14/08
CPC分类号： H04J3/0682 , H04J3/0652 , H04Q11/0067 , H04Q2011/0081 , H04Q2011/009
摘要： An optical communication system has a master station and a plurality of slave stations connected thereto via an optical fiber network, which is provided with an optical splitter and a relay unit which relays signals transmitted/received between the master station and the plurality of slave stations. The master station includes a first controller for performing ranging between the master station and the relay unit, and the relay unit includes a second controller for performing ranging between the relay unit and the plurality of slave stations. The master station determines, on the basis of the results of ranging performed by the first and second controllers as well as reports from the slave stations, timings for the slave stations to transmit signals to the master station, and receives signals multiplexed through the optical fiber network from the slave stations.
摘要翻译：光通信系统具有主站和经由光纤网络连接到其上的多个从站，光纤网络设有光分路器和中继单元，其中继在主站与多个从站之间发送/接收的信号。主站包括用于在主站和中继单元之间进行测距的第一控制器，并且中继单元包括用于执行中继单元与多个从站之间的测距的第二控制器。主站基于由第一和第二控制器执行的测距结果以及从站的报告，确定从站向主站发送信号的定时，并且接收通过光纤复用的信号从站的网络。

3. 发明授权

US08204168B2 Bit synchronization circuit with phase tracking function 有权
标题翻译：位同步电路具有相位跟踪功能
公开(公告)号：US08204168B2
公开(公告)日：2012-06-19
申请号：US12349914
申请日：2009-01-07
申请人： Yusuke Yajima , Tohru Kazawa , Yoshihiro Ashi
发明人： Yusuke Yajima , Tohru Kazawa , Yoshihiro Ashi
IPC分类号： H04L7/00 , H03D3/24
CPC分类号： H04L7/0337 , H03L7/0814 , H03L7/087 , H03L7/091 , H04L7/0004 , H04L7/046
摘要： A bit synchronization circuit comprising an initial phase determining unit for rapidly determining, during a period of receiving a preamble of burst data, a clock with a phase synchronized with received burst data from among multi-phase clocks having the same frequency as an internal reference clock and a phase tracking unit for modifying the synchronized phase clock responsive to phase variation of received data during a period of receiving a payload of burst data by taking the synchronized phase clock determined by the initial phase determining unit as an initial phase. The bit synchronization circuit retimes burst data with a data retiming clock having a predetermined phase relation with the synchronized phase clock and outputs the burst data in synchronization with the internal reference clock.
摘要翻译：一种位同步电路，包括初始相位确定单元，用于在从脉冲串数据的前导码接收周期内快速确定具有与内部参考时钟相同频率的多相位时钟中的接收脉冲串数据同步的时钟以及相位跟踪单元，用于通过将由初始相位确定单元确定的同步相位时钟作为初始相位，在接收到突发数据的有效载荷的周期期间响应于接收数据的相位变化来修正同步相位时钟。位同步电路使用具有与同步相位时钟具有预定相位关系的数据重新定时时钟重新匹配突发数据，并且与内部参考时钟同步输出脉冲串数据。

4. 发明申请

US20120106958A1 OPTICAL MULTIPLEXING TERMINATING DEVICE, PASSIVE OPTICAL NETWORK SYSTEM AND METHOD FOR ALLOCATING WAVELENGTH 失效
标题翻译：光学多路复用终端设备，被动光网络系统和分配波长的方法
公开(公告)号：US20120106958A1
公开(公告)日：2012-05-03
申请号：US13262754
申请日：2009-04-07
申请人： Norihiro Sakamoto , Tohru Kazawa , Yusuke Yajima , Akihiko Tsuchiya
发明人： Norihiro Sakamoto , Tohru Kazawa , Yusuke Yajima , Akihiko Tsuchiya
IPC分类号： H04J14/00
CPC分类号： H04J14/0282 , H04J14/0246 , H04J14/0252 , H04Q2213/1301
摘要： A passive optical network system such that the power consumption can be reduced as much as possible according to the end-user traffic. An OLT uses the DBA function thereof and sequentially uses frequencies in ascending order of transmission rate in order to sequentially allocate bands to ONUs in ascending order of the requested bandwidth. At this time, a frequency to be allocated is selected so that the bandwidth allocated to each ONU is narrower than a maximum bandwidth through which transmission using the allocated wavelength is enabled. An OLT uses a grant area to specify the transmission timing of the secondary station and to inform the specified transmission timing to the secondary station. In addition, an area is set for storing information used to inform the secondary station of a new frequency to be used.
摘要翻译：无源光网络系统，使得可以根据最终用户流量尽可能地减少功耗。 OLT使用其DBA功能，并按照传输速率的升序依次使用频率，以按照所请求带宽的升序顺序地向ONU分配频带。此时，选择要分配的频率，使得分配给每个ONU的带宽比通过使能分配的波长的传输得到的最大带宽更窄。 OLT使用授权区域来指定次站的发送定时，并将指定的发送定时通知给次站。此外，设置用于存储用于通知次站的要使用的新频率的信息的区域。

5. 发明申请

US20120070147A1 COMMUNICATION SYSTEM AND COMMUNICATION APPARATUS 失效
标题翻译：通信系统和通信设备
公开(公告)号：US20120070147A1
公开(公告)日：2012-03-22
申请号：US13239963
申请日：2011-09-22
申请人： Masahiko MIZUTANI , Yusuke Yajima , Takayuki Kanno , Takeshi Yasuda
发明人： Masahiko MIZUTANI , Yusuke Yajima , Takayuki Kanno , Takeshi Yasuda
IPC分类号： H04B10/08
CPC分类号： H04L45/26 , H04J3/0682 , H04L43/0852 , H04L45/22 , H04L45/62 , H04L47/70 , H04L47/746 , H04L47/762 , H04L47/826 , H04Q11/0062 , H04Q2011/0079 , H04Q2011/0081
摘要： Communication arrangements wherein each of ONUs of a first or second PON transmits data toward a connected first or second OLT after a wait time period designated by the connected first or second OLT; the first communication device of the first packet communication network sends a first frame for measuring communication time period, to the second communication device of the second packet communication network through the first PON, and sends a second frame for measuring communication time period, to the second communication device through the second PON; and the second communication device calculates a difference of communication time period between the received first and second frames, and instructs the first or second OLT of the first or second PON, for correcting a wait time period which is set to the one or plural ONUs connected to the first or second OLT, based on the difference between communication time periods.
摘要翻译：通信布置，其中第一或第二PON的每个ONU在由所连接的第一或第二OLT指定的等待时间段之后向连接的第一或第二OLT发送数据; 第一分组通信网络的第一通信设备通过第一PON向第二分组通信网络的第二通信设备发送用于测量通信时间段的第一帧，并向第二分组通信网络发送用于测量通信时间段的第二帧通信设备通过第二PON; 并且第二通信设备计算接收的第一和第二帧之间的通信时间段的差异，并且指示第一或第二PON的第一或第二OLT用于校正被设置为连接的一个或多个ONU的等待时间段基于通信时间段之间的差异，到第一或第二OLT。

6. 发明授权

US08116627B2 PON system method for receiving optical signal and OLT 有权
标题翻译： PON系统接收光信号和OLT的方法
公开(公告)号：US08116627B2
公开(公告)日：2012-02-14
申请号：US12222224
申请日：2008-08-05
申请人： Hiroki Ikeda , Toshiki Sugawara , Yusuke Yajima
发明人： Hiroki Ikeda , Toshiki Sugawara , Yusuke Yajima
IPC分类号： H04B10/20
CPC分类号： H04B10/272 , H04B10/27
摘要： When a signal of weak optical power is received immediately after a signal of intense optical power, input of the signal of intense optical power readily causes saturation, and the influence interferes in the signal of weak optical power to deteriorate receiver sensitivity. Moreover, when a reverse-bias voltage of APD is changed, if a difference between the voltages is large, a next optical signal is received until the receiver sensitivity of the APD becomes stable, so that receiver sensitivity deteriorates. A DBA order is determined so that a difference in reverse-bias voltage is small, and reverse-bias voltage is controlled in line with reception timing from ONU.
摘要翻译：当在强光信号之后立即接收到弱光功率的信号时，强光信号信号的输入容易引起饱和，并且影响会干扰弱光功率的信号，从而降低接收机灵敏度。此外，当APD的反向偏置电压发生变化时，如果电压差大，则接收下一个光信号，直到APD的接收灵敏度变得稳定为止，接收灵敏度变差。确定DBA顺序，使得反向偏置电压的差小，并且根据ONU的接收定时来控制反向偏置电压。

7. 发明申请

US20120008948A1 PASSIVE OPTICAL NETWORK SYSTEM AND OPERATING METHOD THEREOF 失效
标题翻译：被动光网络系统及其操作方法
公开(公告)号：US20120008948A1
公开(公告)日：2012-01-12
申请号：US13201804
申请日：2009-11-09
申请人： Tohru Kazawa , Akihiko Tsuchiya , Norihiro Sakamoto , Yusuke Yajima , Masatoshi Takihiro
发明人： Tohru Kazawa , Akihiko Tsuchiya , Norihiro Sakamoto , Yusuke Yajima , Masatoshi Takihiro
IPC分类号： H04B10/20
CPC分类号： H04L12/44 , H04Q11/0067 , H04Q2011/0079
摘要： Provided is a passive optical network system for operating a mixture of PONs with differing transmission speeds and is capable of reducing power consumption on the basis of the amount of signals being transmitted. The master station of the passive optical network system, which determines the amount and timing of signals sent thereto by each of a plurality of slave stations on the basis of the requests of the plurality of slave stations and receives signals from the plurality of slave stations via an optical fiber network, is equipped with a control unit that determines in each set cycle the amount, transmission timing, and transmission speed of the signals that each slave station is permitted to transmit to said master station on the basis of the amount of signals that each of the plurality of slave stations has requested to transmit, and that notifies such to each slave station. Additionally, each of the plurality of slave stations is equipped with a control unit that transmits signals to the master station at a first transmission speed or a second transmission speed that is faster than the first transmission speed, and is configured to transmit signals with either the first transmission speed or the second transmission speed on the basis of notifications from the master station.
摘要翻译：提供了一种用于操作具有不同传输速度的PON的混合的无源光网络系统，并且能够基于正在传输的信号量来减少功耗。无源光网络系统的主站，其根据多个从站的请求确定发送给多个从站的信号的数量和定时，并且经由光纤网络配备有控制单元，该控制单元在每个设定的周期中根据所述主站的信号量确定每个从站被允许向所述主站发送的信号的量，发送定时和传输速度，多个从站中的每一个已经请求发送，并且通知每个从站。此外，多个从站中的每一个配备有控制单元，该控制单元以比第一传输速度快的第一传输速度或第二传输速度向主站发送信号，并且被配置为：基于来自主站的通知的第一传输速度或第二传输速度。

8. 发明授权

US08095004B2 Passive optical network system and operation method of the same 有权
标题翻译：被动光网络系统及其操作方法相同
公开(公告)号：US08095004B2
公开(公告)日：2012-01-10
申请号：US12359413
申请日：2009-01-26
申请人： Masahiko Mizutani , Yusuke Yajima
发明人： Masahiko Mizutani , Yusuke Yajima
IPC分类号： H04B10/08 , H04B10/00
CPC分类号： H04J3/0682 , H04J14/0282
摘要： In a passive optical network system, in order that by measuring a transmission distance and a transmission time between an OLT and an ONU in operation of the system, if the distance or the time is short, communication is conducted at a high transmission speed to increase a capacity of user; if the distance or the time is long, communication is conducted at a low transmission speed to increase the capacity of user communicating in a state in which a predetermined quality is secured, a main station includes a signal communication circuit to communicate with subsidiary stations at a first or second transmission speed and a controller to measure a transmission distance or a transmission time between the main station and each subsidiary station. Based on a result of the measurement, the controller selects a transmission speed for communication with the subsidiary station.
摘要翻译：在无源光网络系统中，为了通过在系统的操作中测量OLT与ONU之间的传输距离和传输时间，如果距离或时间短，则以高传输速度进行通信以增加用户容量; 如果距离或时间长，则以低传输速度进行通信，以在确保预定质量的状态下增加用户通信的容量，主站包括信号通信电路，以在子站第一或第二传输速度，以及用于测量主站和每个辅助站之间的传输距离或传输时间的控制器。基于测量结果，控制器选择用于与子站通信的传输速度。

9. 发明授权

US08005362B2 Passive optical network system and optical line terminal 有权
标题翻译：无源光网络系统和光线路终端
公开(公告)号：US08005362B2
公开(公告)日：2011-08-23
申请号：US12022172
申请日：2008-01-30
申请人： Norihiro Sakamoto , Yusuke Yajima , Tohru Kazawa
发明人： Norihiro Sakamoto , Yusuke Yajima , Tohru Kazawa
IPC分类号： H04J14/00
CPC分类号： H04Q11/0067 , H04J3/0682 , H04L25/063 , H04Q11/0066 , H04Q2011/0064 , H04Q2011/0088 , H04Q2213/1301
摘要： In order to be able to moderate the inclination of the PON burst reception characteristics and to improve the FEC effect, a first offset is used in a ranging window field, and a second offset, which is lower than the first offset value, is used in a burst data field other than the ranging window field.
摘要翻译：为了能够缓和PON突发接收特性的倾斜度并改善FEC效应，在测距窗口场中使用第一偏移量，并且将低于第一偏移值的第二偏移量用于除了测距窗口字段之外的突发数据字段。

10. 发明申请

US20110170871A1 APPARATUS OF ADJUSTING OPTICAL SIGNAL TRANSMISSION TIMING 失效
标题翻译：调整光信号传输时序的设备
公开(公告)号：US20110170871A1
公开(公告)日：2011-07-14
申请号：US13053827
申请日：2011-03-22
申请人： Tohru Kazawa , Masaki Ohira , Yusuke Yajima , Akihiko Tsuchiya , Yoshinobu Morita
发明人： Tohru Kazawa , Masaki Ohira , Yusuke Yajima , Akihiko Tsuchiya , Yoshinobu Morita
IPC分类号： H04J14/00
CPC分类号： H04B10/272 , H04J3/0682 , H04J3/1694
摘要： In a light reception element such as an APD (Avalanche Photo Diode) used for receiving a high-speed and weak optical signal, it is possible to prevent the phenomenon of distortion of a signal inputted after a large-level light is received. A PON (Passive Optical Network) system includes an OLT (Optical Line Terminal) which can impartially and effectively transmit light reception data to each ONU (Optical Network Unit). According to a light reception amplitude received by each ONU, an inter-frame gap of an appropriate length is assigned for each ONU. The OLT includes a unit for measuring and accumulating the reception light amplitude and data on the inter-frame gap of an appropriate length decided in advance according to the characteristic of the light reception device and generates a grant value for assuring an inter-frame gap of an appropriate length by using the both information.
摘要翻译：在用于接收高速和弱光信号的APD（雪崩光电二极管）等光接收元件中，可以防止在接收到大电平光之后输入的信号的失真现象。 PON（Passive Optical Network，无源光网络）系统包括能够向每个ONU（Optical Network Unit，光网络单元）公正地有效地发送光接收数据的OLT（Optical Line Terminal）。根据每个ONU接收的光接收幅度，为每个ONU分配适当长度的帧间间隔。 OLT包括用于根据光接收装置的特性预先确定的适当长度的帧间隙上的接收光幅度和数据的测量和累加单元，并生成用于确保帧间间隔的帧间间隔的准许值通过使用这两个信息适当的长度。

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