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1. 发明申请

US20180212897A1 STATION-SIDE APPARATUS IN OPTICAL TRANSMISSION SYSTEM AND OPTICAL TRANSMISSION SYSTEM 审中-公开
公开(公告)号：US20180212897A1
公开(公告)日：2018-07-26
申请号：US15745413
申请日：2016-07-14
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Saki HATTA , Tomoaki KAWAMURA , Kenji KAWAI , Nobuyuki TANAKA , Satoshi SHIGEMATSU , Namiko IKEDA , Shoko OHTERU , Junichi KATO
IPC分类号： H04L12/911 , H04Q11/00
CPC分类号： H04L47/788 , H04B10/40 , H04B10/50 , H04B10/60 , H04L12/44 , H04Q11/0067 , H04Q2011/0086
摘要： An upstream allocation circuit (14) and a downstream allocation circuit (15) are provided in an OLT (1). For example, a superimposed frame obtained by bundling upstream frames (upstream control frames+upstream data frames) from all ONUS is input to the upstream allocation circuit (14) via a frame reproduction circuit (12-1). The superimposed frame may be generated at the stage of optical signals or generated after converting optical signals into electrical signals. The upstream allocation circuit (14) allocates each of the upstream control frames bundled into the superimposed frame to a predetermined PON control circuit (13) based on information (PON port number or LLID) added to the frames. The downstream allocation circuit (15) allocates, to a preset frame reproduction circuit (12), each downstream control frames output from the PON control circuits (13).

2. 发明申请

US20180192328A1 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.

3. 发明申请

US20170272167A1 Station-Side Apparatus in Optical Transmission System, Optical Transmission System, and Optical Transmission Method 有权
公开(公告)号：US20170272167A1
公开(公告)日：2017-09-21
申请号：US15505559
申请日：2015-08-19
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Kenji KAWAI , Yuki ARIKAWA , Tomoaki KAWAMURA , Nobuyuki TANAKA , Satoshi SHIGEMATSU , Naoki MIURA
IPC分类号： H04B10/27 , H04B10/40
CPC分类号： H04B10/27 , H04B10/40 , H04L12/44
摘要： An OLT (1) is formed by N optical transceivers (11), one PON control circuit (12), and one selection and distribution circuit (13). An optical transceiver selection control signal (SC) is transferred from the PON control circuit (12) to the selection and distribution circuit (13). The optical transceiver selection control signal (SC) indicates the timing of a discovery window, the timing of a grant, and a logical link identification number of a registered ONU assigned to the grant (a logical link identification number for a logical link with the registered ONU). The selection and distribution circuit (13) selects one optical transceiver (11-s (s is an integer falling within a range of 0 to N−1)) from the optical transceivers (11-0 to 11-N−1) based on the optical transceiver selection control signal (SC) from the PON control circuit (12).

4. 发明申请

US20190245715A1 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.

5. 发明申请

US20180242337A1 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.

6. 发明申请

US20180062746A1 STATION-SIDE DEVICE AND OPTICAL TRANSMISSION SYSTEM 审中-公开
公开(公告)号：US20180062746A1
公开(公告)日：2018-03-01
申请号：US15555960
申请日：2016-03-04
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Shoko OHTERU , Namiko IKEDA , Saki HATTA , Satoshi SHIGEMATSU , Nobuyuki TANAKA , Kenji KAWAI , Junichi KATO , Tomoaki KAWAMURA , Hiroyuki UZAWA , Yuki ARIKAWA , Naoki MIURA
IPC分类号： H04B10/27 , H04B10/038 , H04B10/40 , H04J14/02 , H04J14/08
CPC分类号： H04B10/27 , H04B10/03 , H04B10/038 , H04B10/272 , H04B10/40 , H04J14/0221 , H04J14/08 , H04L12/44 , H04Q11/0062 , H04Q2011/0081
摘要： A selection and distribution circuit (13) is provided between N optical transceivers (11) and one PON control circuit (12). The selection and distribution circuit (13) selects the optical transceiver (11) corresponding to an upstream frame that time-divisionally arrives, thereby transferring the upstream frame opto-electrically converted by the transceiver (11) to the PON control circuit (12) and distributing a downstream frame from the PON control circuit (12) to each optical transceiver (11). A power supply control circuit (23) stops power supply to at least one of one of optical transceivers (11) that are not used to transfer the frame of the optical transceivers (11) and a circuit that is not used to transfer the frame in the selection and distribution circuit (13). This can reduce the system cost per ONU in the optical transmission system.

7. 发明申请

US20150311980A1 OPTICAL COMMUNICATION SYSTEM, OPTICAL COMMUNICATION METHOD, HIGHER-NETWORK APPARATUS, AND OPTICAL LINE TERMINAL 有权
标题翻译：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。

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