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1. 发明专利

JP2011199612A Mobile communication system, and communication method 有权
标题翻译：移动通信系统和通信方法
公开(公告)号：JP2011199612A
公开(公告)日：2011-10-06
申请号：JP2010064443
申请日：2010-03-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YANO TADASHI , TAKATORI MASAHIRO , NAKAHARA SHIGETO , MIMURA KAZU
IPC分类号： H04W88/16 , H04W28/04 , H04W80/06
CPC分类号： H04L47/14 , H04L1/1635 , H04L1/1854 , H04L12/66 , H04L43/0894 , H04L47/225 , H04L47/283 , H04L47/323 , H04L2001/0097 , H04W28/14 , H04W88/04 , H04W88/08 , H04W88/16
摘要： PROBLEM TO BE SOLVED: To provide a mobile communication system for preventing the burst transmission of acknowledgements leading to a decrease in throughput caused by detecting the retransmission and congestion of packets at the protocol of a transport layer.SOLUTION: In the mobile communication system including a mobile terminal and a repeater for relaying a packet between a communication partner and the mobile terminal, when the acknowledgement from the mobile terminal is received, the transmission of the received acknowledgement to the communication partner is suspended until the estimated transmission time passes after the time of receiving the previous acknowledgement from the mobile terminal.
摘要翻译：要解决的问题：提供一种移动通信系统，用于防止突发传输确认，导致检测到在传输层的协议上的分组的重传和拥塞造成的吞吐量的降低。解决方案：在包括移动终端和用于在通信伙伴和移动终端之间中继分组的中继器，当接收到来自移动终端的确认时，将所接收到的确认发送到通信对方被暂停，直到估计的传输时间经过时间从移动终端接收先前的确认。

2. 发明专利

JP2014003459A Gateway device and packet communication method 审中-公开
标题翻译：网关设备和分组通信方法
公开(公告)号：JP2014003459A
公开(公告)日：2014-01-09
申请号：JP2012137381
申请日：2012-06-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIMURA KAZU , YANO TADASHI , TAKATORI MASAHIRO , NAKAHARA SHIGETO
IPC分类号： H04W36/14 , H04W28/12 , H04W88/16
CPC分类号： H04W40/00 , H04L47/27 , H04W36/14
摘要： PROBLEM TO BE SOLVED: To reduce packet loss due to improper control for TCP communication during communication related to a mobile terminal when the mobile terminal switched its connection destination to a different radio system.SOLUTION: A gateway device 105 relaying a communication packet adjusts a transmission amount from an opposite terminal 107 by temporarily re-writing the parameter of the reception window size of an ACK packet of TCP communication from a mobile terminal 100a. This allows packet loss due to improper control to be reduced without modifying the mobile terminal 100a and the opposite terminal 107.
摘要翻译：要解决的问题：当移动终端将其连接目的地切换到不同的无线电系统时，减少由于对与移动终端相关的通信期间的TCP通信的不正确控制造成的分组丢失。解决方案：中继通信分组的网关设备105调整传输通过从移动终端100a临时重写TCP通信的ACK分组的接收窗口大小的参数，从相对终端107获得的数量。这允许在不修改移动终端100a和相对终端107的情况下减少由于不正确控制而导致的分组丢失。

3. 发明专利

JP2012147093A Network system, and network device 有权
标题翻译：网络系统和网络设备
公开(公告)号：JP2012147093A
公开(公告)日：2012-08-02
申请号：JP2011002018
申请日：2011-01-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YANO TADASHI , MIMURA KAZU , TAKATORI MASAHIRO , NAKAHARA SHIGETO
IPC分类号： H04W36/08 , H04L12/66 , H04L12/701 , H04L12/723 , H04W40/02 , H04W76/04 , H04W80/04
CPC分类号： H04L45/50 , H04L45/507 , H04L47/824 , H04L47/825 , H04W36/00 , H04W76/02 , H04W88/02 , H04W88/08 , H04W88/16
摘要： PROBLEM TO BE SOLVED: To prevent deterioration in network performance caused by distribution of many MPLS labels, and to apply an MPLS path quickly even at handover of a mobile terminal.SOLUTION: After a first base station is connected to a first mobile terminal, a first GW (gateway) receives a request for connecting the first mobile terminal and a second GW and identifiers of the second GW and the first mobile terminal, and transmits the identifiers of the first mobile terminal and the first GW to the second GW. The second GW transmits an MPLS allocation flag to the first GW. The first GW transmits an MPLS allocation signal including the identifier of the first mobile terminal to the second GW via a second NW (network) device. The first base station receives the identifier of the first GW and the MPLS allocation flag from the first GW via a management server, and transmits the MPLS allocation signal including the identifier of the first mobile terminal to the first GW via the first NW device. After the first mobile terminal is connected to the second base station, the second base station transmits the MPLS allocation signal to a third NW device provided between the second base station and the first GW.
摘要翻译：要解决的问题：为了防止由许多MPLS标签分配引起的网络性能的恶化，并且即使在移动终端的切换时也能快速应用MPLS路径。解决方案：在第一基站连接到第一移动终端之后，第一GW（网关）接收连接第一移动终端和第二GW以及第二GW和第一移动终端的标识符的请求，以及将第一移动终端和第一GW的标识符发送到第二GW。第二GW向第一GW发送MPLS分配标志。第一GW经由第二NW（网络）设备向第二GW发送包括第一移动终端的标识符的MPLS分配信号。第一基站经由管理服务器从第一GW接收到第一GW的标识符和MPLS分配标志，经由第一NW设备向第一GW发送包括第一移动终端的标识符的MPLS分配信号。在第一移动终端连接到第二基站之后，第二基站向设置在第二基站和第一GW之间的第三NW设备发送MPLS分配信号。版权所有（C）2012，JPO＆INPIT

4. 发明专利

JP2013115809A Radio communication system, gateway and paging suppression method 审中-公开
标题翻译：无线电通信系统，网关和寻呼抑制方法
公开(公告)号：JP2013115809A
公开(公告)日：2013-06-10
申请号：JP2011263532
申请日：2011-12-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YANO TADASHI , MIMURA KAZU , TAKATORI MASAHIRO , NAKAHARA SHIGETO
IPC分类号： H04W68/02 , H04W12/10 , H04W88/16
摘要： PROBLEM TO BE SOLVED: To prevent an unnecessary load increase and a wasteful use of radio resources by suppressing port scanning and paging by an illegal access in a radio communication system.SOLUTION: In a mobile communication network, when shifting from an active state in which a radio link is connected to an idle state in which a radio link is released, a mobile terminal 101 notifies a mobile gateway 105, which accommodates a mobile terminal in the radio communication network, of port information in communication or port information in a standby state. On receiving a packet destined to the mobile terminal in the idle state, the mobile gateway 105 initiates paging processing if the port information included in the packet matches the notified port state in communication or in the standby state.
摘要翻译：要解决的问题：通过在无线通信系统中通过非法访问来抑制端口扫描和寻呼来防止不必要的负载增加和无线电资源的浪费。解决方案：在移动通信网络中，当从无线电链路被连接的活动状态转换到释放无线电链路的空闲状态时，移动终端101通知移动网关105，移动网关105容纳移动终端在无线通信网络中，端口信息在通信或端口信息处于待机状态。在接收到处于空闲状态的目的地为移动终端的分组时，如果包括在分组中的端口信息与在通信或待机状态下通知的端口状态匹配，则移动网关105发起寻呼处理。版权所有（C）2013，JPO＆INPIT

5. 发明专利

JP2010088013A Route control method, and access gateway apparatus 有权
标题翻译：路由控制方法和接入网关设备
公开(公告)号：JP2010088013A
公开(公告)日：2010-04-15
申请号：JP2008257131
申请日：2008-10-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKAMURA HITOMI , KATSU YUICHIRO , MATSUMOTO NORIHISA , YANO TADASHI , TAKATORI MASAHIRO
IPC分类号： H04W92/14 , H04W4/24 , H04W40/36 , H04W80/04 , H04W92/24
CPC分类号： H04W8/082 , H04L45/302 , H04L45/42 , H04W76/02 , H04W80/04 , H04W88/16
摘要： PROBLEM TO BE SOLVED: To automatically set a shortest data path that has taken into consideration QoS/charge control on the side of a network without the need of paying attention as to which IP address should be used. SOLUTION: A communication system including a home server that connects a terminal to a service network, an access gateway apparatus that connects the terminal to the home server, and a policy server that controls the access gateway apparatus, wherein the policy server transmits a request for link formation for associating the communication path of a first terminal and the communication path of a second terminal to the access gateway apparatus and when receiving the request for link formation, the access gateway apparatus sets a fifth communication path that connects a first communication path and a third communication path, records information about the fifth communication path in communication path management information, and transmits data transmitted via the first communication path from the first terminal to the second terminal via the fifth communication path and the third communication path based on the communication path management information. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：自动设置考虑到网络侧的QoS /费用控制的最短数据路径，而不需要注意应该使用哪个IP地址。解决方案：包括将终端连接到服务网络的家庭服务器，将终端连接到家庭服务器的接入网关设备和控制接入网关设备的策略服务器的通信系统，其中策略服务器发送用于将第一终端的通信路径与第二终端的通信路径关联到接入网关装置的链路形成请求，并且当接收到链路形成请求时，接入网关装置设置连接第一通信的第五通信路径路径和第三通信路径，在通信路径管理信息中记录关于第五通信路径的信息，并且经由第五通信路径和第三通信路径将经由第一通信路径从第一终端发送到第二终端的数据基于通信路径管理信息。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2013005126A Communication system and gateway device 审中-公开
标题翻译：通信系统和网关设备
公开(公告)号：JP2013005126A
公开(公告)日：2013-01-07
申请号：JP2011132796
申请日：2011-06-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIMURA KAZU , YANO TADASHI , TAKATORI MASAHIRO , NAKAHARA SHIGETO
IPC分类号： H04L12/46 , H04M3/00 , H04W88/16
摘要： PROBLEM TO BE SOLVED: To suppress uneven processing loads among packet processing cards without causing inversion of packet order and/or mismatch of parameters specific to each session concerning a gateway device which is a component of a mobile communication network.SOLUTION: While a session is in an idle state, a storage destination packet processing card for performing gateway processing for the session is changed over.
摘要翻译：要解决的问题：为了抑制分组处理卡中的不均匀的处理负担，而不会导致关于作为移动通信网络的组件的网关设备的每个会话专用的分组顺序和/或不匹配的参数的不匹配。解决方案：当会话处于空闲状态时，切换用于执行会话的网关处理的存储目的地分组处理卡。版权所有（C）2013，JPO＆INPIT

7. 发明专利

JP2011040931A Mobile communication gateway device, and method of controlling mobile communication gateway 有权
标题翻译：移动通信网关设备和控制移动通信网关的方法
公开(公告)号：JP2011040931A
公开(公告)日：2011-02-24
申请号：JP2009185614
申请日：2009-08-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKAMURA HITOMI , MORISHIGE TAKEHIRO , YANO TADASHI , TAKATORI MASAHIRO
IPC分类号： H04W56/00 , H04L12/70 , H04L12/713 , H04W8/10 , H04W28/14 , H04W76/04 , H04W88/16
摘要： PROBLEM TO BE SOLVED: To provide a mobile communication gateway for maintaining the synchronization of respective call state between an active system and a preliminary system even if the inversion of a packet sequence and a loss of a packet occur. SOLUTION: The mobile communication gateway device is used for transferring user traffic to a second node for providing a communication service from a first node for connecting a terminal thereto. In a switch, a call processing packet transmitted from the first node is replicated, one side is used as a first call processing packet and the other side is used as a second call processing packet, the first call processing packet is transmitted to a call processing part of an active system, the second call processing packet is transmitted to a call processing part of a preliminary system, the first call processing packet transmitted from the active system is transmitted to the first node, the second call processing packet transmitted from the preliminary system is discarded, and whether the call state of the active system coincides with that of the preliminary system is detected based on transmission/reception states of the first and second call processing packets. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：即使分组序列的反转和分组的丢失发生，提供用于维持活动系统和初步系统之间的各个呼叫状态的同步的移动通信网关。解决方案：移动通信网关设备用于将用户业务传送到第二节点，用于从用于连接终端的第一节点提供通信服务。在交换机中，复制从第一节点发送的呼叫处理分组，一方用作第一呼叫处理分组，另一方用作第二呼叫处理分组，第一呼叫处理分组被发送到呼叫处理活动系统的一部分，第二呼叫处理分组被发送到初步系统的呼叫处理部分，从主动系统发送的第一呼叫处理分组被发送到第一节点，从初步系统发送的第二呼叫处理分组并且基于第一和第二呼叫处理分组的发送/接收状态来检测活动系统的呼叫状态是否与初始系统的呼叫状态一致。版权所有（C）2011，JPO＆INPIT

8. 发明专利

JP2010171714A Mobile communication system, call control server, and access gateway device 有权
标题翻译：移动通信系统，呼叫控制服务器和访问网关设备
公开(公告)号：JP2010171714A
公开(公告)日：2010-08-05
申请号：JP2009012156
申请日：2009-01-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YANO TADASHI , NAKAMURA HITOMI , TAKATORI MASAHIRO , MORISHIGE TAKEHIRO , SHIMIZU YOSHIHIRO
IPC分类号： H04W52/02 , H04M3/42 , H04W60/04 , H04W88/14
CPC分类号： H04W36/12 , H04W28/08 , H04W60/02 , Y02D70/00 , Y02D70/1224 , Y02D70/1262 , Y02D70/146
摘要： PROBLEM TO BE SOLVED: To reduce power consumption by changing the configuration of nodes according to communication traffic.
SOLUTION: In this mobile communication system comprising: a plurality of base stations; a plurality of mobility management call control servers that accommodate the mobile terminals; and a plurality of access gateway devices which transfer packets addressed to the mobility management call control servers and the mobile terminals to the base stations, the mobility management call control servers make the mobile terminals register positions again to store the mobile terminals stored in the mobility management call control servers to other mobility management call servers again according to a processing amount of control signals, the base stations select the mobility management call control servers which becomes new storage destinations of the mobile terminals among a group of grouped mobility management call control servers on receiving requests of position registration from the mobile terminals, and the mobility management call control servers reduce the power consumption by shifting to a power saving mode when the mobile terminals to be stored are lost.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过根据通信流量改变节点的配置来降低功耗。解决方案：在该移动通信系统中，包括：多个基站; 容纳移动终端的多个移动性管理呼叫控制服务器; 以及将寻址到移动性管理呼叫控制服务器和移动终端的分组传送到基站的多个接入网关设备，移动性管理呼叫控制服务器使得移动终端再次注册位置以存储移动管理中存储的移动终端呼叫控制服务器根据控制信号的处理量再次向其他移动性管理呼叫服务器发送呼叫控制服务器，基站选择移动管理呼叫控制服务器，这些移动管理呼叫控制服务器在接收到一组分组的移动管理呼叫控制服务器之后成为移动终端的新存储目的地来自移动终端的位置登记的请求，以及移动管理呼叫控制服务器，当要存储的移动终端丢失时，通过切换到省电模式来降低功耗。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2962472B2 Frame phase conversion circuit, cross-connect device and the receiving device 失效
公开(公告)号：JP2962472B2
公开(公告)日：1999-10-12
申请号：JP10079498
申请日：1998-04-13
申请人：日本電信電話株式会社 , 株式会社日立製作所
发明人： TAKATORI MASAHIRO , NAKANO YUKIO , ISHIDA KEIICHI , MORI TAKASHI , ASHI MASAHIRO , SUGANO TADAYUKI , UEDA HIROMI
IPC分类号： H04J3/00 , H04J3/06 , H04J3/07 , H04L7/00 , H04L12/28

10. 发明专利

JP2001358597A METHOD FOR CONSTITUTING ERROR-CORRECTING CODE, DECODING METHOD, TRANSMITTER, AND NETWORK 失效
公开(公告)号：JP2001358597A
公开(公告)日：2001-12-26
申请号：JP2000179377
申请日：2000-06-09
申请人： HITACHI LTD
发明人： OHIRA MASATERU , TAKATORI MASAHIRO , MORI TAKASHI
IPC分类号： G06F11/10 , H03M7/14 , H03M13/15 , H03M13/27 , H03M13/29 , H04L1/00 , H04L12/52
摘要： PROBLEM TO BE SOLVED: To provide a method for constituting error-correcting code by which the relaying interval of optical signals transmitted through one optical fiber can be quadrupled by maintaining the original transmitting distance when wavelength multiplexing is performed, even when the time-division multiplicity of the optical signals becomes about double and has a higher gain and a transmitter and a network using the method. SOLUTION: In the method of constituting error-correcting code, a code information block is obtained segmenting client signals having a fixed bit rate at every a-bytes, and a c-byte code block 3 is obtained by raising the bit rate so that the block 3 may have the code information block and a free b-byte area and the c/a ratio may become >=110%. Then the code information block in the block 3 is encoded into an error-correcting code so that the code may have an encoding gain of >=6 dB for the bit error rate of 10-12 and its check bit is arranged in the free area as a super FEC signal.

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