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    • 2. 发明专利
    • Wimax communication system
    • WIMAX通信系统
    • JP2011211520A
    • 2011-10-20
    • JP2010077716
    • 2010-03-30
    • Japan Radio Co Ltd日本無線株式会社
    • YAGISHITA KOICHIYOSHIDA SHIGEJIDOI YUSUKESATO KATSUHIKO
    • H04W36/14
    • PROBLEM TO BE SOLVED: To provide a Wimax communication system allowing a terminal to perform handover between different ASNs.SOLUTION: This Wimax communication system includes: a PF server 22 including a table T for defining a correspondence relationship with a service flow identifier being an identifier of a service flow generated between a base station 14b having a terminal 12b wirelessly connected thereto; and a plurality of ASNs 16 connected to the PF server 22. Here, the service flow identifier is allocated to the terminal 12b based on the table T and, when the terminal 12b wirelessly connected to the base station 14b is handed over to the a base station 14c, a service flow of a service flow identifier identical to the service flow identifier generated in the terminal 12b is generated in the terminal 12b even after the handover.
    • 要解决的问题:提供允许终端在不同ASN之间执行切换的Wimax通信系统。解决方案:该Wimax通信系统包括:PF服务器22,其包括用于定义与作为标识符的服务流标识符的对应关系的表T 在具有与其无线连接的终端12b的基站14b之间产生的服务流; 以及连接到PF服务器22的多个ASN 16.这里,基于表T将业务流标识符分配给终端12b,并且当无线连接到基站14b的终端12b被切换到基站 即使在切换之后,也在终端12b中生成与在终端12b中生成的服务流标识符相同的服务流标识符的服务流程。
    • 3. 发明专利
    • WiMAX COMMUNICATION SYSTEM
    • WiMAX通信系统
    • JP2009302641A
    • 2009-12-24
    • JP2008151702
    • 2008-06-10
    • Japan Radio Co Ltd日本無線株式会社
    • SATO KATSUHIKOYOSHIDA SHIGEJIYAGISHITA KOICHIHASEGAWA AKIRASUZUKI YASUSHI
    • H04W40/02
    • PROBLEM TO BE SOLVED: To provide a WiMAX communication system capable of minimizing communication delay in performing communications between mobile terminals. SOLUTION: The WiMAX communication system 10 has mobile terminals 12-1, 12-2 wirelessly connected to a base station 14a, the base station 14a has a first table in which a transmission destination of data packets is set, examines the transmission destination of the data packets transmitted from the mobile terminal 12-1, verifies the transmission destination of the data packets with the first table, and transmits the data packets to the mobile terminal 12-2 when confirming that a mobile station of the transmission destination of the data packets is the mobile station 12-2. As described above, communication between mobile communications wirelessly connected to the same base station and communication between mobile stations over the base station are performed, thereby preventing delay in packet transfer. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供能够最小化在移动终端之间进行通信的通信延迟的WiMAX通信系统。 解决方案:WiMAX通信系统10具有与基站14a无线连接的移动终端12-1,12-2,基站14a具有设置数据分组的发送目的地的第一表,检查传输 从移动终端12-1发送的数据分组的目的地,使用第一表验证数据分组的发送目的地,并且在确认发送目的地的移动台 数据分组是移动台12-2。 如上所述,执行无线连接到同一基站的移动通信与基站之间的移动台之间的通信之间的通信,从而防止分组传送的延迟。 版权所有(C)2010,JPO&INPIT
    • 4. 发明专利
    • Ha load balancing control system
    • HA负载平衡控制系统
    • JP2009200882A
    • 2009-09-03
    • JP2008041066
    • 2008-02-22
    • Japan Radio Co Ltd日本無線株式会社
    • YAGISHITA KOICHISATO KATSUHIKO
    • H04W8/04H04W24/02H04W80/04
    • PROBLEM TO BE SOLVED: To provide an HA(Home Agent) load balancing control system which includes a plurality of HAs and appropriately performs control based upon loads on the respective HAs. SOLUTION: In the HA load balancing control system, each of HAs18a, 18b, 18d, 18e generates a list used by an HA18c to retrieve other HA18 having a load less than the own load through a skip graph. When the HA18c having the load makes a request to participate in an overlay network composed of the other HAs18a, 18b, 18d and 18e after the first list is generated, the HA18c is removed from the list after the list is updated by the HA18c and the other HAs18a, 18b, 18d and 18e. After being removed from the list, the HA18c compares its own load L with a threshold T and returns to the list when the load L becomes larger than the threshold T, so that the list is updated. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种HA(归属代理)负载平衡控制系统,其包括多个HA,并且基于相应的HA上的负载适当地执行控制。 解决方案:在HA负载平衡控制系统中,HAs18a,18b,18d,18e中的每一个生成HA18c使用的列表,以通过跳过图来检索负载小于自身负载的其他HA18。 当具有负载的HA18c在生成第一列表之后请求参与由其他HAs18a,18b,18d和18e组成的覆盖网络时,在HA18c更新列表之后,将HA18c从列表中移除,并且 其他HAs18a,18b,18d和18e。 从列表中删除后,HA18c将其自身的负载L与阈值T进行比较,当负载L大于阈值T时,返回列表,以便更新列表。 版权所有(C)2009,JPO&INPIT
    • 5. 发明专利
    • Information transfer device and communication system
    • 信息传输设备和通信系统
    • JP2008153918A
    • 2008-07-03
    • JP2006339602
    • 2006-12-18
    • Japan Radio Co Ltd日本無線株式会社
    • YOSHIDA NORIFUMISATO KATSUHIKOYAGISHITA KOICHIMURAKAMI FUMIO
    • H04L12/46H04W8/26H04W92/12
    • PROBLEM TO BE SOLVED: To provide an information transfer device effectively utilizing addresses even when the number of radio terminal equipment for transferring/receiving information via a base station between the information transfer devices fluctuates, and to provide the information transfer device and a communication system, simplifying the processing of acquiring the MAC address of the other radio terminal equipment of the communication by each radio terminal equipment and reducing an information amount to be processed.
      SOLUTION: When acquiring ARP request information from one of communication ports 28-1 to 28-n, the information transfer device 22 refers to an address correspondence table TB stored in a table storage part 22a. The information transfer device 22 acquires the MAC address corresponding to an IP address to be resolved included in the ARP request information as a resolution MAC address. The information transfer device 22 transmits ARP response information including the resolution MAC address from the communication port where the ARP request information is received.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:即使当信息传送装置之间经由基站传送/接收信息的无线电终端设备的数量波动时,也提供有效地利用地址的信息传送装置,并且提供信息传送装置和 通信系统,简化了由各无线终端设备获取通信的其他无线终端设备的MAC地址的处理,并减少了要处理的信息量。 解决方案:当从通信端口28-1至28-n之一获取ARP请求信息时,信息传送装置22参考存储在表存储部分22a中的地址对应表TB。 信息传送装置22获取与包含在ARP请求信息中的要解析的IP地址对应的MAC地址作为分辨率MAC地址。 信息传送装置22从接收到ARP请求信息的通信端口发送包含分辨率MAC地址的ARP响应信息。 版权所有(C)2008,JPO&INPIT
    • 7. 发明专利
    • Radio communication system
    • 无线电通信系统
    • JP2014049771A
    • 2014-03-17
    • JP2012188289
    • 2012-08-29
    • Japan Radio Co Ltd日本無線株式会社
    • DOI YUSUKEYOSHIDA SHIGEJIYAGISHITA KOICHISAKAI MINORU
    • H04W28/16H04B7/04H04J99/00H04W16/28
    • PROBLEM TO BE SOLVED: To provide a radio communication system that can prevent deterioration in utilization efficiency of band resources in an entire radio communication system.SOLUTION: A radio communication system comprises a terminal 12 receiving multiple flows, base stations 14a and 14b which will be radio connection candidates of the terminal 12, and a control server 20. When the control server 20 receives throughput information on the flow for each of the flows received by the terminal 12, if throughput indicated by the received throughput information on the flow is larger than each transmission capability of the base stations 14a, 14b, the control server 20 selects base station cooperation MIMO communication by the base stations 14a, 14b, and if the above mentioned throughput of each flow is smaller than the transmission capability, the control server 20 gets only one base station to deliver. This allows utilization efficiency of band resources in the entire radio communication system to be improved.
    • 要解决的问题:提供一种无线通信系统,其能够防止整个无线通信系统中的频带资源的利用效率的劣化。解决方案:无线通信系统包括接收多个流的终端12,基站14a和14b将成为 终端12的无线电连接候选和控制服务器20.当控制服务器20接收到终端12接收到的每个流的流量的吞吐量信息时,如果接收到的流量的吞吐量信息指示的吞吐量大于 基站14a,14b,控制服务器20的每个传输能力选择基站14a,14b进行基站协作MIMO通信,如果上述每个流量的吞吐量小于传输能力,则控制服务器20获得 只有一个基站交付。 这样可以提高整个无线通信系统中的频带资源的利用效率。
    • 8. 发明专利
    • Network system
    • 网络系统
    • JP2012138863A
    • 2012-07-19
    • JP2010291472
    • 2010-12-28
    • Japan Radio Co Ltd日本無線株式会社
    • YAGISHITA KOICHISAKAI MINORUYOSHIDA SHIGEJIDOI YUSUKE
    • H04W12/06H04L9/32H04W4/24H04W24/04
    • PROBLEM TO BE SOLVED: To provide a network system which can efficiently perform authentication of a terminal even when an AAA server malfunctions or stops in a network comprising a plurality of terminals.SOLUTION: A network system 10 comprises an AAA server 16, and base stations 14a, 14b and 14c wirelessly connected with a terminal 12. An overlay network 18 is formed by the AAA server 16 and base stations 14a, 14b and 14c. The base stations 14a, 14b and 14c has: distributed hash tables 20a, 20b and 20c storing an identification code of the terminal 12; an operation monitoring unit 24 for monitoring an operational state of the AAA server 16; and a terminal authentication unit 26 which starts up based on a monitoring result of the operation monitoring unit 24 for performing authentication of the terminal 12 by referring to the distributed hash tables 20a, 20b and 20c.
    • 要解决的问题:提供即使当AAA服务器在包括多个终端的网络中发生故障或停止时,也可以有效地执行终端的认证的网络系统。 解决方案:网络系统10包括AAA服务器16以及与终端12无线连接的基站14a,14b和14c。覆盖网络18由AAA服务器16和基站14a,14b和14c形成。 基站14a,14b和14c具有分配的哈希表20a,20b和20c,其存储终端12的识别码; 用于监视AAA服务器16的操作状态的操作监视单元24; 以及终端认证单元26,其基于用于通过参考分布式哈希表20a,20b和20c来执行终端12的认证的操作监视单元24的监视结果启动。 版权所有(C)2012,JPO&INPIT
    • 9. 发明专利
    • Wimax communication system
    • WIMAX通信系统
    • JP2011229022A
    • 2011-11-10
    • JP2010098125
    • 2010-04-21
    • Japan Radio Co Ltd日本無線株式会社
    • DOI YUSUKEYOSHIDA SHIGEJIYAGISHITA KOICHISATO KATSUHIKO
    • H04M3/00
    • PROBLEM TO BE SOLVED: To provide a WIMAX communication system capable of polling with lower polling load on an EMS and less traffic over a wide area network.SOLUTION: A WIMAX communication system comprises: base stations 14a to 14f which have radio communication with terminals 12; ASNGWs 16a, 16b which manage QoS of communication between the terminals 12 and the base stations 14a to 14f; and an EMS 22 which is responsible for operation management for the base stations 14a to 14f. ASNs 18a, 18b includes respective polling agents 26a, 26b which perform polling to monitor operation of the base stations 14a to 14f. The polling agents 26a, 26b poll the base stations 14a to 14f according to instructions of the EMS 22.
    • 要解决的问题:提供一种WIMAX通信系统,能够以较低的轮询负载在EMS上进行轮询,并且在广域网上的流量较少。 解决方案:WIMAX通信系统包括:具有与终端12的无线电通信的基站14a至14f; 用于管理终端12和基站14a至14f之间的通信的QoS的ASNGW 16a,16b; 以及负责基站14a至14f的操作管理的EMS 22。 ASN 18a,18b包括执行轮询以监视基站14a至14f的操作的相应的轮询代理26a,26b。 投票代理人26a,26b根据EMS 22的指示对基站14a至14f进行轮询。版权所有:(C)2012,JPO&INPIT
    • 10. 发明专利
    • Digital content distribution system
    • 数字内容分发系统
    • JP2008259001A
    • 2008-10-23
    • JP2007100128
    • 2007-04-06
    • Japan Radio Co Ltd日本無線株式会社
    • SATO KATSUHIKOYAGISHITA KOICHI
    • H04N7/173G06F13/00H04L12/70H04L12/801H04L12/857H04L12/873H04L12/911H04N21/262H04N21/2662H04N21/845
    • PROBLEM TO BE SOLVED: To provide a digital content distribution system in which network band resources are efficiently used in distribution of digital content to terminals with different band width b. SOLUTION: The digital content distribution system 10 is provided with a content distribution server 18 which distributes the digital content by dividing it into segments S via a network 20 to a plurality of terminals 12, 14, 16. The content distribution server 18 has a distribution control part 30 which calculates the segments S based on average generation ratio λ of distribution requests of the digital content for each of terminal group 22, 24, 26 with the same band width b which request distribution of the digital content and the network band resources are efficiently used by distributing the digital content by dividing it based on the segment S. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种数字内容分发系统,其中网络频带资源被有效地用于将数字内容分配给具有不同带宽b的终端。 解决方案:数字内容分发系统10具有内容分发服务器18,内容分配服务器18通过网络20将数字内容分成多个分段S到多个终端12,14,16来分发数字内容。内容分发服务器18 具有分配控制部分30,其基于请求数字内容和网络的分配的相同带宽b,基于终端组22,24,26中的每一个的数字内容的分发请求的平均生成比率λ来计算段S 通过基于片段S分割数字内容来有效地使用频带资源。版权所有:(C)2009,JPO&INPIT