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    • 1. 发明授权
    • Transfer apparatus, transfer network system, and transfer method
    • 传输设备,传输网络系统和传送方式
    • US08667058B2
    • 2014-03-04
    • US13527311
    • 2012-06-19
    • Shinya FujiokaYoshihiro AshiMasahiko Mizutani
    • Shinya FujiokaYoshihiro AshiMasahiko Mizutani
    • G06F15/16
    • H04L67/1095H04L67/26H04L67/325H04L69/28
    • When data is disclosed to a plurality of users by using a transfer network and a transfer apparatus, data disclosure time control which cannot be adversely affected by the users is performed to reduce the difference in data disclosure time among the users. A transfer network system includes a distribution server serving as a data-distribution-source transfer apparatus, and a network terminal connected to distribution-destination user equipment. The distribution server and the network terminal each have a time keeping function and a time synchronization function for matching the time of the time keeping function with a master clock. The distribution server sends in advance disclosure data and disclosure time to the network terminal. When the time of the time keeping function of the network terminal matches the disclosure time, the network terminal sends the disclosure data to the user equipment.
    • 当通过使用传送网络和传送装置向多个用户公开数据时,执行不受用户不利影响的数据公开时间控制,以减少用户之间的数据公开时间的差异。 传送网络系统包括用作数据分发源传送装置的分发服务器和连接到分发目的地用户设备的网络终端。 分发服务器和网络终端均具有时间保持功能和时间同步功能,用于将时间保持功能的时间与主时钟相匹配。 分发服务器预先向网络终端发送披露数据和公开时间。 当网络终端的时间保持功能与公布时间匹配时,网络终端向用户设备发送公开数据。
    • 2. 发明授权
    • Communication system, subscriber accommodating apparatus and communication method
    • 通信系统,用户收纳设备和通信方法
    • US08554075B2
    • 2013-10-08
    • US13144253
    • 2009-01-13
    • Masahiko MizutaniYusuke YajimaNobuyuki YamamotoYoshihiro Ashi
    • Masahiko MizutaniYusuke YajimaNobuyuki YamamotoYoshihiro Ashi
    • H04J14/00H04J14/02
    • H04J14/0227H04L43/0817H04L43/0852H04L45/22H04L45/28H04Q11/0067H04Q2011/0081
    • 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).
    • 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。
    • 4. 发明授权
    • Optical communication system and method for operating the same
    • 光通信系统及其操作方法
    • US08249458B2
    • 2012-08-21
    • US12638383
    • 2009-12-15
    • Masahiko MizutaniYusuke Yajima
    • Masahiko MizutaniYusuke Yajima
    • H04J14/08
    • H04J3/0682H04J3/0652H04Q11/0067H04Q2011/0081H04Q2011/009
    • 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.
    • 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。
    • 6. 发明授权
    • Passive optical network system and operation method of the same
    • 被动光网络系统及其操作方法相同
    • US08095004B2
    • 2012-01-10
    • US12359413
    • 2009-01-26
    • Masahiko MizutaniYusuke Yajima
    • Masahiko MizutaniYusuke Yajima
    • H04B10/08H04B10/00
    • H04J3/0682H04J14/0282
    • 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.
    • 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。
    • 8. 发明申请
    • OPTICAL COMMUNICATION SYSTEM AND COMMUNICATION BANDWIDTH CONTROL METHOD
    • 光通信系统和通信带宽控制方法
    • US20110085799A1
    • 2011-04-14
    • US12903931
    • 2010-10-13
    • MASAHIKO MIZUTANI
    • MASAHIKO MIZUTANI
    • H04B10/08
    • H04Q11/0067H04J3/0652H04J3/0682H04Q2011/0073
    • In the communication system, a master station is coupled to slave stations by a fiber network comprising a splitter and a reach extender, the master station includes a first bandwidth control section which determines, based on a request from each slave station, a first data amount of a signal transmitted in a first cycle, the reach extender includes: a distance measurement section which measures a distance or a time between the reach extender and each slave station; and a second bandwidth control section which determines a second data amount and transmission timing of a signal based on a request from each slave station and the first data amount, and each slave station transmits a signal with a data amount, which the first bandwidth control section determined based on a data amount and transmission timing determined in second cycles, to the master station in the first cycle.
    • 在通信系统中,主站通过包括分离器和扩展器的光纤网络耦合到从站,主站包括第一带宽控制部分,其基于来自每个从站的请求确定第一数据量 在第一周期中发送的信号,延伸器包括:距离测量部分,其测量到达延伸器与每个从站之间的距离或时间; 以及第二带宽控制部,其基于来自每个从站的请求和所述第一数据量来确定信号的第二数据量和发送定时,并且每个从站发送具有数据量的信号,所述第一带宽控制部 基于在第二周期中确定的数据量和发送定时确定的,在第一周期中向主站确定。
    • 9. 发明授权
    • Optical access system
    • 光接入系统
    • US07773880B2
    • 2010-08-10
    • US12076897
    • 2008-03-25
    • Kenichi SakamotoYoshihiro AshiTohru KazawaRyosuke NishinoMasayuki TakaseMasahiko Mizutani
    • Kenichi SakamotoYoshihiro AshiTohru KazawaRyosuke NishinoMasayuki TakaseMasahiko Mizutani
    • H04B10/00
    • H04J3/1694H04J3/0682
    • 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.
    • 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。
    • 10. 发明申请
    • OPTICAL COMMUNICATION SYSTEM AND METHOD FOR OPERATING THE SAME
    • 光通信系统及其操作方法
    • US20100178051A1
    • 2010-07-15
    • US12638383
    • 2009-12-15
    • Masahiko MIZUTANIYusuke Yajima
    • Masahiko MIZUTANIYusuke Yajima
    • H04B10/08
    • H04J3/0682H04J3/0652H04Q11/0067H04Q2011/0081H04Q2011/009
    • 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.
    • 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。