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1. 发明授权

US11206630B2 Information processing system 有权
公开(公告)号：US11206630B2
公开(公告)日：2021-12-21
申请号：US16599949
申请日：2019-10-11
申请人： KYOTO UNIVERSITY , ALLIED TELESIS HOLDINGS K.K.
发明人： Noriyasu Katoh , Koji Yamamoto , Shotaro Kamiya
IPC分类号： H04W64/00 , H04B17/318
摘要： There is provided an information processing system including a relative-position estimation processing unit configured to estimate a relative position between an access point and a wireless client by using a cooperative position estimation method using distance information based on a signal strength between the access point and the wireless client; and an inside/outside determination processing unit configured to determine an inside/outside positional relationship between a polygonal target area formed by access points and the wireless client, in which the inside/outside determination processing unit determines whether the wireless client is present inside or outside the target area by determining a direction of vector product of the access points forming a side of the target area and a direction of vector product of the wireless client and the access point as a vertex of the polygonal area.

2. 发明授权

US10666651B2 Access control system 有权
公开(公告)号：US10666651B2
公开(公告)日：2020-05-26
申请号：US15966957
申请日：2018-04-30
申请人： Allied Telesis Holdings K.K.
发明人： Mitsuhiro Watanabe
IPC分类号： G06F9/00 , G06F15/16 , G06F17/00 , H04L29/06 , H04L12/58 , H04L12/24 , H04L12/46
摘要： To provide an access control system for performing access control, etc., in a case of detecting irregular behavior in a network, an access control system includes a message-obtainment-processing unit configured to obtain from an email server an email message including information for identifying a suspect-terminal that has conducted irregular behavior, the email message being generated in a security system located inside or outside a private network constituted by use of a software defined network (SDN) to be received by the email server. The message-obtainment-processing unit causes an SDN controller in the private network to provide, to the suspect-terminal or an edge network device that controls communication of the suspect-terminal, a control instruction based on the obtained email message, so as to cause the suspect-terminal or the edge network device to execute a process for access control against the suspect-terminal.

3. 发明授权

US10419363B2 Network device, communication method, and recording medium 有权
公开(公告)号：US10419363B2
公开(公告)日：2019-09-17
申请号：US14825616
申请日：2015-08-13
申请人： ALLIED TELESIS HOLDINGS K.K.
发明人： Tokunori Ikegami
IPC分类号： H04L12/935 , H04L12/937
摘要： According to the present invention, a network device having a plurality of ports, includes a linkup detection unit, a loop detection unit, and a communication shutoff unit. The linkup detection unit detects a linkup of the each port. The loop detection unit detects a loop formed by the network device. The communication shutoff unit shuts off communication on a port on which the linkup was detected at a later time point if the loop is detected.

4. 发明授权

US09794893B2 Wireless communication control device and wireless communication control method 有权
公开(公告)号：US09794893B2
公开(公告)日：2017-10-17
申请号：US15504316
申请日：2016-08-10
申请人： KYOTO UNIVERSITY , ALLIED TELESIS HOLDINGS K.K.
发明人： Koji Yamamoto , Takayuki Nishio , Masahiro Morikura , Tomoyuki Sugihara
IPC分类号： H04B7/00 , H04W52/28 , H04W4/02 , H04W64/00
CPC分类号： H04W52/283 , H04W4/023 , H04W16/24 , H04W24/02 , H04W52/143 , H04W52/18 , H04W52/245 , H04W64/003
摘要： There is provided a wireless communication control device and a wireless communication control method, which control the transmission power of radio waves of base stations appropriately to reduce interference between cells. The wireless communication control method according to the present invention is a method of controlling plural base stations in a wireless communication system in which the plural base stations cover a target area with radio waves of a first radio wave strength or more, the method causing a computer to execute: a step of acquiring a relative positional relationship of the plural base stations; a step of identifying a base station, located in the neighborhood of the boundary of the target area, from the relative positional relationship of the plural base stations; and a step of lowering the transmission power of radio waves of a base station other than the identified base station among the plural base stations.

5. 发明申请

US20160006647A1 NETWORK DEVICE, COMMUNICATION METHOD, PROGRAM, AND RECORDING MEDIUM 有权
标题翻译：网络设备，通信方法，程序和记录介质
公开(公告)号：US20160006647A1
公开(公告)日：2016-01-07
申请号：US14741945
申请日：2015-06-17
申请人： ALLIED TELESIS HOLDINGS K.K.
发明人： Tokunori IKEGAMI
IPC分类号： H04L12/705 , H04L12/24
CPC分类号： H04L45/18
摘要： According to the present invention, a network device includes a plurality of ports, a communication controller that controls communication on the each port, and a communication shutoff unit that shuts off communication on any of the ports. The communication controller includes a linkup detection unit that detects a linkup of the each port, a loop detection frame sending unit that sends a loop detection frame from a linkup detected port, which is a port for which the linkup is detected after a predetermined period from a time point when the linkup is detected by the linkup detection unit, and a loop detection frame detection unit that detects the loop detection frame if the loop detection frame is received on the each port. The communication shutoff unit shuts off communication carried out on a sending port which is a port from which the detected loop detection frame is sent.
摘要翻译：根据本发明，网络设备包括多个端口，控制每个端口上的通信的通信控制器和关闭任何端口上的通信的通信截止单元。通信控制器包括：检测每个端口的链路的链路检测单元;循环检测帧发送单元，其从在链路检测端口发送环路检测帧，该链路检测端口是在预定时间段之后检测到链路的端口链路检测单元检测到链路的时间点;以及环路检测帧检测单元，如果在每个端口上接收到环路检测帧，则检测环路检测帧。通信关闭单元关闭作为检测到的环路检测帧发送的端口的发送端口进行的通信。

6. 发明授权

US08780899B2 Method and system for improving traffic distribution across a communication network 有权
标题翻译：改善通信网络流量分配的方法和系统
公开(公告)号：US08780899B2
公开(公告)日：2014-07-15
申请号：US11656553
申请日：2007-01-23
申请人： Mark Tillman , Graeme Campbell
发明人： Mark Tillman , Graeme Campbell
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L12/66 , H04L29/12028 , H04L29/12839 , H04L45/00 , H04L45/245 , H04L47/10 , H04L47/125 , H04L47/41 , H04L49/3009 , H04L49/351 , H04L49/50 , H04L49/552 , H04L49/602 , H04L61/103 , H04L61/6022 , Y02D50/30
摘要： A system and method for distributing data across a network including a plurality of trunked port lines, including modifying an existing field within one layer of a data packet on the basis of information found within another layer of the data packet and restricting the process of trunking distribution to only consider the modified layer. In an exemplary embodiment, a method and a system for improving packet data distribution across a communication network environment is provided that changes a field within the Layer 2 (L2) section of the packet on the basis of fields within the Layer 3 (L3) section of the packet. This may involve changing the destination Media Access Control (MAC) address on the basis of the destination IP address and limiting the trunk distribution determination to the L2 section of the packet data.
摘要翻译：一种用于在包括多个集群端口线的网络上分发数据的系统和方法，包括基于在数据分组的另一层内发现的信息修改数据分组的一层内的现有字段并限制中继分配的过程只考虑修改层。在一个示例性实施例中，提供了一种用于改善跨越通信网络环境的分组数据分布的方法和系统，其基于层3（L3）部分内的字段改变分组的第2层（L2）部分内的字段的包。这可能包括基于目的地IP地址来改变目的地媒体访问控制（MAC）地址，并且将中继分配确定限制到分组数据的L2部分。

7. 发明申请

US20090086620A1 METHOD AND APPARATUS FOR PREVENTING NETWORK CONFLICT 有权
标题翻译：防止网络冲突的方法和装置
公开(公告)号：US20090086620A1
公开(公告)日：2009-04-02
申请号：US12238911
申请日：2008-09-26
申请人： Hayden FOWLER , Tim Beale , Sharee McNab , Seiichiro Satoh
发明人： Hayden FOWLER , Tim Beale , Sharee McNab , Seiichiro Satoh
IPC分类号： H04J1/16
CPC分类号： H04L12/40169 , H04L12/437 , H04L12/44 , H04L45/58
摘要： A resiliency-link having a master node and slave nodes may be used to automatically avoid network conflicts due to failure of a node stack. Any stack stub formed as a result of the failure of a stack node or link may use the resiliency-link to determine whether the stack Master node is still online and providing service. If communication over the resiliency-link determines that the original Master node is offline, a new stack stub takes over and provides the desired service. If the original Master node is still online, then the new stack stub takes an appropriate alternative or fallback action.
摘要翻译：可以使用具有主节点和从节点的弹性链路来自动避免由于节点堆栈的故障引起的网络冲突。由于堆栈节点或链路故障而形成的任何栈存根可以使用弹性链路来确定堆叠主节点是否仍然在线并提供服务。如果通过弹性链路的通信确定原始主节点处于脱机状态，则新的堆栈存根接管并提供所需的服务。如果原始主节点仍然在线，则新的堆栈存根将采取适当的替代或回退操作。

8. 发明授权

US11510171B2 Apparatus and method for position estimation 有权
公开(公告)号：US11510171B2
公开(公告)日：2022-11-22
申请号：US16909249
申请日：2020-06-23
申请人： ALLIED TELESIS HOLDINGS K.K.
发明人： Itano Seiho
IPC分类号： H04W64/00 , H04W4/02 , G01S5/02 , G01S5/14
摘要： A position estimation apparatus estimates the position of a radio communication device that outputs a signal, where the apparatus includes a distance estimating section, a difference summing section, and a minimum difference candidate point determining section, where the distance estimating section estimates actual distances between wireless access points that receive the signal and the radio communication device as estimated distances based on the reception strength of the signal, where the difference summing section sums values based on differences between the distances between candidate points for the position of the radio communication device and the wireless access points and the estimated distances, where the minimum difference candidate point determining section determines a minimum difference candidate point, and where the position of the minimum difference candidate point is estimated as the position of the radio communication device.

9. 发明授权

US10834666B2 Wireless communication device and method 有权
公开(公告)号：US10834666B2
公开(公告)日：2020-11-10
申请号：US16183601
申请日：2018-11-07
申请人： Allied Telesis Holdings K.K.
发明人： Jaehyuk Ryu
IPC分类号： H04W48/16 , H04L29/12 , H04L9/32 , H04W12/08 , H04W48/10 , H04W60/00 , H04W84/22
摘要： According to the present disclosure, a wireless communication device wirelessly communicates with mesh portals in conformity with the IEEE 802.11s standard. The wireless communication device includes a MAC address receiving section, a MAC address recording section, an IP address inquiring section, and an IP address recording section. The MAC address receiving section receives the MAC addresses of the mesh portals from the mesh portals. The MAC address recording section records the received MAC addresses in correspondence to metrics between the mesh portals and the wireless communication device. The IP address inquiring section preferentially requests an IP address from one of the mesh portals having a MAC address corresponding to a smaller one of the metrics based on contents recorded by the MAC address recording section. The IP address recording section records the IP address transmitted from the mesh portal as a result of the request.

10. 发明授权

US08737419B2 Network concentrator and method of controlling the same 有权
标题翻译：网络集中器及其控制方法
公开(公告)号：US08737419B2
公开(公告)日：2014-05-27
申请号：US13382136
申请日：2010-06-25
申请人： Seiho Itano
发明人： Seiho Itano
IPC分类号： H04J3/17
CPC分类号： H04L12/44 , H04L12/10 , H04L41/0833 , H04L43/0811 , Y02D50/30
摘要： Provided is a method of controlling a network concentrator 100 which controls a link status between, of a plurality of ports 102, 104, 106, 108, at least one port 102, 104, 106 that belongs to a first group 10 and at least one port 108 that belongs to a second group 12 corresponding to the first group 10. The method comprises the steps of: detecting that each of the ports that respectively belong to the first group 10 and the second group 12 is link-up or link-down; and as a result of the detection step, if at least one port in one group of the first group 10 and the second group 12 is link-up and all the ports in the other group are link-down, setting the link-up port in the one group to disablement.
摘要翻译：提供了一种控制网络集中器100的方法，网络集中器100控制多个端口102,104,106,108中属于第一组10的至少一个端口102,104,106之间的链路状态，以及至少一个端口108属于与第一组10对应的第二组12.该方法包括以下步骤：检测分别属于第一组10和第二组12的每个端口是连接或链接 ; 作为检测步骤的结果，如果第一组10和第二组12的一个组中的至少一个端口链接并且另一组中的所有端口都链接，则将链路端口在一个组中进行禁用。

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