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1. 发明授权

EP2690895B1 WIRELESS COMMUNICATION SYSTEM AND BASE STATION APPARATUS 有权
标题翻译：无线通信系统和基站装置
公开(公告)号：EP2690895B1
公开(公告)日：2015-12-30
申请号：EP12776532.9
申请日：2012-04-25
申请人： Nippon Telegraph And Telephone Corporation
发明人： ASAI Yusuke , KUDO Riichi , ICHIKAWA Takeo , INOUE Yasuhiko , ABEYSEKERA Hirantha Sithira , MIZOGUCHI Masato
IPC分类号： H04W76/00 , H04W8/18 , H04B7/04 , H04L12/18
CPC分类号： H04W72/04 , H04B7/0452 , H04L1/00 , H04L12/18 , H04L12/185 , H04L61/2046 , H04L61/2069 , H04W8/186 , H04W24/02 , H04W52/00 , H04W76/11 , H04W76/40 , H04W88/08
摘要： In a system which performs wireless communication from an access point to stations using group identification information, the frequency of uses of group identification information that overlaps with that of another access point is reduced. An association between a station apparatus included in a group that is a target for simultaneous transmission and group identification information is stored, each station apparatus included in the group is notified of the group identification information, group identification information that is being used in the other access point apparatus is acquired, and if group identification information that is being used by the access point apparatus itself overlaps with the group identification information used by the other access point apparatus, the group identification information is changed so as to reduce the number of pieces of overlapping group identification information.

2. 发明公开

EP2905983A1 WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION METHOD 有权
标题翻译：无线通信装置，无线通信系统以及无线通信方法
公开(公告)号：EP2905983A1
公开(公告)日：2015-08-12
申请号：EP13853482.1
申请日：2013-11-12
申请人： Nippon Telegraph and Telephone Corporation
发明人： ABEYSEKERA Hirantha Sithira , ISHIHARA Koichi , INOUE Yasuhiko , ASAI Yusuke , TAKATORI Yasushi , ICHIKAWA Takeo , MIZOGUCHI Masato , MATSUI Munehiro
IPC分类号： H04W16/10 , H04W24/02 , H04W84/12 , H04W88/08
CPC分类号： H04W16/14 , H04W24/02 , H04W72/0453 , H04W84/12 , H04W88/08
摘要： A wireless communication apparatus is provided that is capable of performing setting of a wireless LAN access point so that frequency utilization efficiency of an entire wireless communication system that includes wireless LAN access points of different manufacturers and different model numbers is improved. A wireless communication system which performs setting necessary for a wireless LAN access point constituting a wireless communication network to operate includes: an information collection unit which collects setting information set in the wireless LAN access point and wireless environment information in the wireless LAN access point, a parameter calculation unit which obtains a parameter to be set for the wireless LAN access point, which is a collection source, based on the collected setting information and the collected wireless environment information, and a parameter setting unit which transmits the obtained parameter to the wireless LAN access point, which is a collection source, over a network and performs setting of the parameter.
摘要翻译：提供一种无线通信装置，其能够执行无线LAN接入点的设置，使得包括不同制造商的无线LAN接入点和不同型号的整个无线通信系统的频率利用效率得到提高。一种对构成无线通信网络的无线LAN接入点进行操作所需的设定的无线通信系统包括：信息收集单元，其收集设置在无线LAN接入点中的设置信息和无线LAN接入点中的无线环境信息; 参数计算单元，其基于所收集的设置信息和所收集的无线环境信息来获得要为作为收集源的无线LAN接入点设置的参数;以及参数设置单元，其将所获得的参数发送到无线LAN 接入点，它是一个收集源，通过网络并执行参数设置。

3. 发明授权

EP2426977B1 WIRELESS COMMUNICATION METHOD, WIRELESS COMMUNICATION SYSTEM, RADIO BASE STATION AND RADIO TERMINAL STATION 有权
标题翻译：无线通信方法，无线通信系统，无线基站和无线终端站
公开(公告)号：EP2426977B1
公开(公告)日：2015-06-10
申请号：EP10797186.3
申请日：2010-07-08
申请人： Nippon Telegraph And Telephone Corporation
发明人： MURAKAMI Tomoki , ICHIKAWA Takeo , KUDO Riichi , TAKATORI Yasushi , MIZOGUCHI Masato , HIRAGURI Takefumi , NISHIMORI Kentaro
IPC分类号： H04B7/10 , H04B7/02 , H04B7/04 , H04W72/08 , H04B7/06 , H04W72/04
CPC分类号： H04W72/0453 , H04B7/024 , H04B7/0452 , H04B7/0617 , H04B7/0697 , H04B17/318 , H04B17/382 , H04W72/046 , H04W72/082

4. 发明公开

EP2642781A1 WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD 有权
标题翻译： DRAHTLOSES KOMMUNIKATIONSSYSTEM UND DRAHTLOSES KOMMUNIKATIONSVERFAHREN
公开(公告)号：EP2642781A1
公开(公告)日：2013-09-25
申请号：EP11842236.9
申请日：2011-11-15
申请人： Nippon Telegraph And Telephone Corporation
发明人： KUDO Riichi , MATSUI Munehiro , MURAKAMI Tomoki , ICHIKAWA Takeo , ASAI Yusuke , ISHIHARA Koichi , YAMADA Tomoyuki , MIZOGUCHI Masato
IPC分类号： H04W16/28 , H04B7/04 , H04J11/00 , H04J99/00 , H04W24/10 , H04W28/18
摘要： Communication quality is prevented from being deteriorated due to interference caused by low accuracy of channel information or interference from another base station or another wireless communication system. A wireless communication system includes a first wireless station including a plurality of antenna elements, transmission units corresponding to the plurality of antenna elements, and a transmission directivity control unit that controls transmission directivity of the plurality of antenna elements, and a plurality of second wireless stations each including a reception power measurement unit that measures a reception power. The transmission directivity control unit determines the transmission directivity of each of the plurality of antenna elements so that a signal does not reach a particular second wireless station among the plurality of second wireless stations. The transmission units generate wireless signals using the transmission directivity. The plurality of antenna elements transmit the generated wireless signals. The reception power measurement unit measures the reception power in a period that is set so that a signal does not reach the particular second wireless station, and detect the presence or absence of interference.
摘要翻译：防止由于信道信息的低精度或来自另一基站或另一无线通信系统的干扰而引起的干扰而导致通信质量恶化。无线通信系统包括：第一无线站，包括多个天线元件，对应于多个天线元件的发送单元;以及控制多个天线元件的发送方向性的发送方向性控制单元，以及多个第二无线站每个包括测量接收功率的接收功率测量单元。发送方向性控制单元确定多个天线元件中的每一个的发送方向性，使得在多个第二无线站中信号没有到达特定的第二无线站。传输单元使用传输方向性产生无线信号。多个天线元件发送生成的无线信号。接收功率测量单元在被设置为使得信号不到达特定的第二无线站的时间段内测量接收功率，并且检测是否存在干扰。

5. 发明授权

EP2642781B1 WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD 有权
公开(公告)号：EP2642781B1
公开(公告)日：2019-10-30
申请号：EP11842236.9
申请日：2011-11-15
申请人： Nippon Telegraph And Telephone Corporation
发明人： KUDO Riichi , MATSUI Munehiro , MURAKAMI Tomoki , ICHIKAWA Takeo , ASAI Yusuke , ISHIHARA Koichi , YAMADA Tomoyuki , MIZOGUCHI Masato
IPC分类号： H04B7/0452 , H04B7/06 , H04L5/00 , H04W16/28 , H04W24/10 , H04B17/318

6. 发明公开

EP3334202A1 WIRELESS ENVIRONMENT INFORMATION COLLECTING SYSTEM AND METHOD 有权
公开(公告)号：EP3334202A1
公开(公告)日：2018-06-13
申请号：EP16833002.5
申请日：2016-08-01
申请人： Nippon Telegraph and Telephone Corporation
发明人： KUDO Riichi , ABEYSEKERA Hirantha Sithira , Matsui Munehiro , ICHIKAWA Takeo , MIZOGUCHI Masato
IPC分类号： H04W24/00 , H04W84/12
CPC分类号： H04W24/08 , H04W24/00 , H04W24/10 , H04W74/0816 , H04W84/12
摘要： Provided is a wireless environment information collection system including a plurality of wireless stations performing wireless communication using a CSMA/CA scheme over a first frequency channel, and a wireless environment information management unit collecting wireless environment information of managed wireless stations being connected through a wired network or a wireless network among the plurality of wireless stations, in which the wireless environment information management unit includes a unit which generates and outputs a channel measurement frame which determines the wireless stations performing stopping of communication over the first frequency channel for a fixed time, starting of measuring channel utilization of the first frequency channel, or both the stopping of communication and the starting of measuring among the managed wireless stations, and the managed wireless stations include a unit which performs, at a time designated by the channel measurement frame from the wireless environment information management unit, the stopping of the communication over the first frequency channel, the measuring of the channel utilization of the first frequency channel, or both the stopping of the communication and the measuring of the channel utilization, and which outputs the obtained wireless environment information to the wireless environment information management unit through the wired network or the wireless network.

7. 发明公开

EP2725731A1 WIRELESS COMMUNICATION METHOD AND BASE-STATION DEVICE 有权
标题翻译：基督教基金会
公开(公告)号：EP2725731A1
公开(公告)日：2014-04-30
申请号：EP12831376.4
申请日：2012-09-18
申请人： Nippon Telegraph And Telephone Corporation
发明人： KUDO Riichi , MURAKAMI Tomoki , ISHIHARA Koichi , ICHIKAWA Takeo , ASAI Yusuke , KUMAGAI Tomoaki , MIZOGUCHI Masato
IPC分类号： H04J99/00 , H04B7/04
CPC分类号： H04B7/0417 , H04B7/0452 , H04B7/0634 , H04L25/0204 , H04L25/0226
摘要： The number of training signals for channel estimation is reduced. A wireless communication method includes: a step of reading, by an access point apparatus, stored training weights for a station which performs channel estimation; a step of generating, by the access point apparatus, a weight training symbol by multiplying the training weights by a training symbol and transmitting the generated weight training symbol; a step of estimating, by a station apparatus, weight channel information from the received weight training symbol; a step of transmitting, by the station apparatus, the weight channel information to the access point apparatus; a step of calculating, by the access point apparatus, transmission weights using the received weight channel information and the stored training weights; a step of transmitting, by the access point apparatus, a data signal in accordance with the transmission weights; and a step of calculating and storing, by the access point apparatus, new training weights using the weight channel information and the stored training weights.
摘要翻译：用于信道估计的训练信号的数量减少。无线通信方法包括：由接入点装置读取进行信道估计的站的存储训练权重的步骤; 由接入点设备通过将训练权重乘以训练符号并发送生成的权重训练符号来生成加权训练符号; 通过站装置估计来自所接收的权重训练符号的权重信道信息的步骤; 由所述站装置向所述接入点装置发送权重信道信息的步骤; 由接入点装置使用所接收的加权信道信息和存储的训练权重来计算发送权重的步骤; 由接入点装置根据发送权重发送数据信号的步骤; 以及由接入点装置使用权重信道信息和存储的训练权重来计算和存储新的训练权重的步骤。

8. 发明授权

EP3340723B1 WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD 有权
公开(公告)号：EP3340723B1
公开(公告)日：2020-10-07
申请号：EP16839135.7
申请日：2016-08-15
申请人： Nippon Telegraph And Telephone Corporation
发明人： KUDO Riichi , ABEYSEKERA Hirantha Sithira , MATSUI Munehiro , SHINOHARA Shoko , TAKATORI Yasushi , ICHIKAWA Takeo , MIZOGUCHI Masato
IPC分类号： H04W74/08 , H04W72/12 , H04W74/04 , H04W84/12

10. 发明授权

EP2725731B1 WIRELESS COMMUNICATION METHOD AND BASE-STATION DEVICE 有权
公开(公告)号：EP2725731B1
公开(公告)日：2018-07-18
申请号：EP12831376.4
申请日：2012-09-18
申请人： Nippon Telegraph And Telephone Corporation
发明人： KUDO Riichi , MURAKAMI Tomoki , ISHIHARA Koichi , ICHIKAWA Takeo , ASAI Yusuke , KUMAGAI Tomoaki , MIZOGUCHI Masato
IPC分类号： H04J99/00 , H04B7/04 , H04L25/02 , H04B7/06 , H04B7/0452 , H04B7/0417
CPC分类号： H04B7/0417 , H04B7/0452 , H04B7/0634 , H04L25/0204 , H04L25/0226
摘要： The number of training signals for channel estimation is reduced. A wireless communication method includes: a step of reading, by an access point apparatus, stored training weights for a station which performs channel estimation; a step of generating, by the access point apparatus, a weight training symbol by multiplying the training weights by a training symbol and transmitting the generated weight training symbol; a step of estimating, by a station apparatus, weight channel information from the received weight training symbol; a step of transmitting, by the station apparatus, the weight channel information to the access point apparatus; a step of calculating, by the access point apparatus, transmission weights using the received weight channel information and the stored training weights; a step of transmitting, by the access point apparatus, a data signal in accordance with the transmission weights; and a step of calculating and storing, by the access point apparatus, new training weights using the weight channel information and the stored training weights.

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