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    RADIO NETWORK SYSTEM
    2.
    发明申请
    RADIO NETWORK SYSTEM 审中-公开

    公开(公告)号：US20180192328A1

    公开(公告)日：2018-07-05

    申请号：US15739677

    申请日：2016-06-22

    申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    发明人： Hiroyuki UZAWA ,  Yuki ARIKAWA ,  Kenji KAWAI ,  Satoshi SHIGEMATSU

    IPC分类号： H04W28/14 ,  H04W72/04 ,  H04J14/02

    摘要： A CU (Central Unit) executes scheduling for allocating radio resources of RRUs (Remote Radio Units) to radio transmission of downlink data while broadcasting, to DMs (Data Managers) via MFH, downlink data from MBH. Each DM selects, based on an allocation result obtained by scheduling, the downlink data of an RRU (Remote Radio Unit) corresponding to the self DM from the accumulated downlink data from the CU, and transfers the selected downlink data to the corresponding RRU while discarding the downlink data of other RRUs. Based on the allocation result, each RRU performs radio transmission of the downlink data from the DM to a corresponding UE (User Equipment) using the designated radio resource. This makes it possible to efficiently transfer the downlink data from the CU to each RRU via the MFH constructed by a TDM system represented by TDM-PON.

    LINK CONTROL CIRCUIT
    4.
    发明申请
    LINK CONTROL CIRCUIT 审中-公开

    公开(公告)号：US20190245715A1

    公开(公告)日：2019-08-08

    申请号：US16319012

    申请日：2017-07-18

    申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    发明人： Saki HATTA ,  Nobuyuki TANAKA ,  Satoshi SHIGEMATSU

    IPC分类号： H04L12/44 ,  H04J14/02

    CPC分类号： H04L12/44 ,  H04J14/0247

    摘要： A link control circuit (10) includes a plurality of hardware processing units serving as an uplink parser unit (11) configured to output, as an event, the contents of link control notified by an uplink control frame, a timer unit (12) configured to start/stop a timer and output a link event in accordance with expiration of the timer, a frame generation unit (13) configured to generate a downlink control frame containing the contents of link control, and a state management unit (15) configured to manage the state of the link in accordance with these events, and instruct the timer unit to start/stop the timer and the frame generation unit to generate the downlink control frame in accordance with the state of the link, thereby controlling connection establishment, maintenance, and disconnection of the link. Each of the hardware processing units includes a memory configured to store an externally changeable internal program describing a corresponding processing operation, and a processor configured to execute the corresponding processing operation in accordance with the internal program.

    SCHEDULING APPARATUS AND METHOD
    5.
    发明申请
    SCHEDULING APPARATUS AND METHOD 审中-公开

    公开(公告)号：US20180242337A1

    公开(公告)日：2018-08-23

    申请号：US15756016

    申请日：2015-08-26

    申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    发明人： Yuri ARIKAWA ,  Hiroyuki UZAWA ,  Kenji KAWAI ,  Satoshi SHIGEMATSU

    IPC分类号： H04W72/12

    CPC分类号： H04W72/12 ,  H04B7/024 ,  H04W24/06

    摘要： A convergence pattern selection unit (10A) sequentially generates a plurality of different patterns based on designated initial conditions, selects, as a convergence pattern, a pattern in which evaluation value has converged to an extreme value, and repeatedly executes selection of the convergence pattern by changing the initial conditions every time the convergence pattern is selected. A transmission pattern determination unit (10B) selects, as an optimum transmission pattern, one of the convergence patterns obtained by the convergence pattern selection unit (10A), which has the highest evaluation value. This allows searches for an optimum transmission pattern having a better evaluation value.

    OPTICAL COMMUNICATION SYSTEM, OPTICAL COMMUNICATION METHOD, HIGHER-NETWORK APPARATUS, AND OPTICAL LINE TERMINAL
    7.
    发明申请
    OPTICAL COMMUNICATION SYSTEM, OPTICAL COMMUNICATION METHOD, HIGHER-NETWORK APPARATUS, AND OPTICAL LINE TERMINAL 有权
    光通信系统，光通信方法，高网络设备和光线路终端

    公开(公告)号：US20150311980A1

    公开(公告)日：2015-10-29

    申请号：US14441423

    申请日：2013-11-06

    申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    发明人： Shigeru KUWANO ,  Jun TERADA ,  Noriko IIYAMA ,  Takeshi SAKAMOTO ,  Nobuyuki TANAKA ,  Satoshi SHIGEMATSU

    IPC分类号： H04B10/27 ,  H04J14/08 ,  H04B10/2575

    CPC分类号： H04B10/27 ,  H04B10/25752 ,  H04J14/08 ,  H04L12/2861 ,  H04Q11/0067 ,  H04Q2011/0064

    摘要： This invention provides a communication system constituted of a higher-network apparatus and a lower-network apparatus connected through a PON system, and an object of the invention is to transfer uplink data from the lower-network apparatus to the higher-network apparatus at high speed so as to meet severe conditions required for a delay time between the higher-network apparatus and the lower-network apparatus.This invention further provides an optical communication method including in order a scheduling execution process in which a higher-network apparatus 1 performs, with respect to one or a plurality of lower-network apparatus 5 communicating with the device 1 itself, scheduling for uplink communication from each of the lower-network apparatus 5 to the device 1 itself and an uplink data transmission permission process in which the higher-network apparatus 1 calculates a transmission time and a transmission permission amount of uplink data transmitted from an ONU 4 to OLT 2 based on the scheduling for uplink communication and notifies the OLT 2, which is the OLT 2 connected to the lower network of the apparatus 1 itself and is connected to one or a plurality of the ONUs 4, connected to the higher network of each of the lower-network apparatus 5, through an optical fiber section 3, of the transmission time and the transmission permission amount of the uplink data.

    摘要翻译： 本发明提供一种由通过PON系统连接的较高网络装置和下位网络装置构成的通信系统，其目的在于将上行数据从较低网络装置高速传输到较高网络装置 以便满足在较高网络设备与较低网络设备之间的延迟时间所需的苛刻条件。 本发明还提供了一种光通信方法，其包括以下步骤：对于与上述设备1本身进行通信的一个或多个下位网络装置5，上位机装置1执行的调度执行处理，进行上行链路通信的调度 下位网络设备5到设备1本身以及上行数据传输许可处理，其中上位机设备1基于从ONU4发送到OLT 2的上行链路数据的传输时间和发送允许量，基于 上行链路通信的调度，通知连接到设备1本身的下层网络的OLT2的OLT2，并连接到与各个下位机的每个的较高网络连接的一个或多个ONU 4， 网络装置5通过光纤部分3发送上行数据的发送时间和发送允许量。