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    • 2. 发明授权
    • Communication terminal, control device, communication method, control method, program, and integrated circuit
    • 通讯终端,控制装置,通讯方式,控制方式,程序及集成电路
    • US08953543B2
    • 2015-02-10
    • US13642581
    • 2011-06-08
    • Toshiaki OhnishiKazuhiro AndoHironori Nakae
    • Toshiaki OhnishiKazuhiro AndoHironori Nakae
    • H04W4/00H04W74/08
    • H04W74/0808H04W72/02
    • The communication terminal includes a receiving unit and a transmission unit, which serve as a communication unit for signal exchange; and a beacon processing unit as a first detection unit that detects, for each channel, the number of the other communication terminals performing wireless communication by receiving a terminal number notification signal from a control device. Additionally, a data processing unit is provided as a second detection unit that counts, for each channel, the number of the other communication terminals found by receiving acknowledgement signals transmitted from the other communication terminals; and a channel control unit selects a frequency channel having a least difference between the number detected by the beacon processing unit and the number counted by the data processing unit, and causes the receiving unit and the transmission unit to perform the signal exchange via the selected frequency channel.
    • 通信终端包括作为用于信号交换的通信单元的接收单元和发送单元; 以及信标处理单元,作为第一检测单元,通过从控制装置接收终端号码通知信号,对于每个信道检测执行无线通信的其他通信终端的数量。 此外,提供数据处理单元作为第二检测单元,对于每个通道,通过接收从其他通信终端发送的确认信号,对其他通信终端的数量进行计数; 并且信道控制单元选择由信标处理单元检测的号码与由数据处理单元计数的号码之间的差异最小的频道,并使接收单元和发送单元经由所选频率进行信号交换 渠道。
    • 4. 发明授权
    • Base station and communication method
    • 基站和通信方式
    • US08515477B2
    • 2013-08-20
    • US12673885
    • 2009-06-26
    • Naotake YamamotoHiroshi HayashinoHironori NakaeNaganori Shirakata
    • Naotake YamamotoHiroshi HayashinoHironori NakaeNaganori Shirakata
    • H04W72/08
    • H04W72/085H04L1/1893H04L5/06H04W28/04
    • A base station includes: an estimation section estimating transmission condition of each of frequency channels used for communication; a reception section receiving a data signal from each communication terminal through any of the frequency channels; a measurement section measuring received signal power of the received data signal for each frequency channel; a determination section determining, for each frequency channel, whether the received data signal is demodulated errorlessly; and a control section assigning frequency channels estimated as being in good transmission condition by the estimation section, to communication terminals the data signals of which are determined as not being errorlessly demodulated by the determination section, such that a frequency channel in a better transmission condition is assigned preferentially to a communication terminal having larger received signal power detected by the detection section, and transmitting retransmission request signals requesting the communication terminals to retransmit the data signals using the assigned frequency channels.
    • 基站包括:估计部,估计用于通信的每个频道的传输条件; 接收部分,通过任何频道从每个通信终端接收数据信号; 测量部分,测量每个频道的接收数据信号的接收信号功率; 确定部,为每个频道确定所接收的数据信号是否无误地解调; 以及控制部,通过所述估计部分将被估计为处于良好发送状态的频率信道分配给所述数据信号被确定为不被所述确定部无错误地解调的通信终端,使得更好的发送条件下的频道为 优先分配给具有由检测部检测到的较大接收信号功率的通信终端,以及发送请求通信终端的重传请求信号,以使用所分配的频率信道重传数据信号。
    • 5. 发明申请
    • CONTROLLER, COMMUNICATION TERMINAL, AND WIRELESS COMMUNICATION SYSTEM
    • 控制器,通信终端和无线通信系统
    • US20130170426A1
    • 2013-07-04
    • US13818706
    • 2012-07-19
    • Yosuke UkitaHironori NakaeHiroshi Hayashino
    • Yosuke UkitaHironori NakaeHiroshi Hayashino
    • H04W72/04
    • H04W72/0446H04W52/0216H04W72/10Y02D70/142Y02D70/144
    • A control point device that reduces delay in a power-saving wireless network includes a normal data generating unit that generates 1st-type data, a preferential data generating unit that generates 2nd-type data different from the 1st-type data, a determining unit that determines an active period length, a beacon generating unit that generates a broadcasting signal including information corresponding to the determined length of the active period, and a transmitting unit that transmits the broadcasting signal to the terminal on a frame basis. The determining unit shortens the length of the active period when the preferential data generating unit generates the 2nd-type data, and a preferential data period is set in an ex-active period obtained by the shortening of the active period, the preferential data period being a period during which the 2nd-type data is transmitted. The transmitting unit transmits the 2nd-type data to the terminal during the preferential data period.
    • 减少省电无线网络延迟的控制点装置包括生成第1类型数据的普通数据生成单元,生成与第1类型数据不同的第2类型数据的优先数据生成单元,确定单元, 确定活动周期长度;信标生成单元,生成包括与确定的活动期间长度相对应的信息的广播信号;以及发送单元,其以帧为基础向终端发送广播信号。 所述确定单元缩短所述优先数据生成单元生成所述第2类型数据时的所述活动期间的长度,并且优先数据周期被设定为通过缩短所述活动期间而获得的前期活动期间,所述优先数据周期为 发送第二类型数据的期间。 发送单元在优先数据周期期间向终端发送第二类型数据。
    • 7. 发明授权
    • Control device, communication terminal, control method, and communication method
    • 控制装置,通讯终端,控制方式及通讯方式
    • US08274926B2
    • 2012-09-25
    • US12677730
    • 2009-07-08
    • Naganori ShirakataHironori NakaeKoji Imamura
    • Naganori ShirakataHironori NakaeKoji Imamura
    • H04B7/212H04W4/00G06F15/173
    • H04W72/082H04W72/042H04W84/10
    • In a wireless communication system according to the present invention: a control device and a communication terminal communicate in an active period. The control device: generates a first beacon packet including one or more candidate channels; transmits the first beacon packet at the beginning of the active period; determines whether or not a use channel is to be changed based on a communication state, and generates a second beacon packet including information of a determination result; transmits the second beacon packet at the end of the active period; and, when it is determined that the use channel is to be changed, changes the use channel after the active period ends and before a next active period starts. The communication terminal: receives the first and second beacon packets; and, based on the second beacon packet, changes the use channel after the active period ends and before a next active period starts.
    • 在根据本发明的无线通信系统中,控制装置和通信终端在活动期间进行通信。 控制装置:生成包括一个或多个候选信道的第一信标包; 在活动期的开始时发送第一信标分组; 基于通信状态确定是否要改变使用信道,并生成包含确定结果信息的第二信标包; 在活动期结束时发送第二信标包; 并且当确定要改变使用频道时,在有效时段结束之后和在下一活动时段开始之前改变使用频道。 通信终端:接收第一和第二信标分组; 并且基于第二信标包在活动时段结束之后并且在下一活动时段开始之前改变使用频道。
    • 8. 发明申请
    • BASE STATION AND COMMUNICATION METHOD
    • 基站和通信方法
    • US20110086661A1
    • 2011-04-14
    • US12673885
    • 2009-06-26
    • Naotake YamamotoHiroshi HayashinoHironori NakaeNaganori Shirakata
    • Naotake YamamotoHiroshi HayashinoHironori NakaeNaganori Shirakata
    • H04W72/08
    • H04W72/085H04L1/1893H04L5/06H04W28/04
    • A base station includes: an estimation section estimating transmission condition of each of frequency channels used for communication; a reception section receiving a data signal from each communication terminal through any of the frequency channels; a measurement section measuring received signal power of the received data signal for each frequency channel; a determination section determining, for each frequency channel, whether the received data signal is demodulated errorlessly; and a control section assigning frequency channels estimated as being in good transmission condition by the estimation section, to communication terminals the data signals of which are determined as not being errorlessly demodulated by the determination section, such that a frequency channel in a better transmission condition is assigned preferentially to a communication terminal having larger received signal power detected by the detection section, and transmitting retransmission request signals requesting the communication terminals to retransmit the data signals using the assigned frequency channels.
    • 基站包括:估计部,估计用于通信的每个频道的传输条件; 接收部分,通过任何频道从每个通信终端接收数据信号; 测量部分,测量每个频道的接收数据信号的接收信号功率; 确定部,为每个频道确定所接收的数据信号是否无误地解调; 以及控制部,通过所述估计部分将被估计为处于良好发送状态的频率信道分配给所述数据信号被确定为不被所述确定部无错误地解调的通信终端,使得更好的发送条件下的频率信道为 优先分配给具有由检测部检测到的较大接收信号功率的通信终端,以及发送请求通信终端的重传请求信号,以使用所分配的频率信道重传数据信号。
    • 9. 发明申请
    • Wireless slave unit
    • 无线从单元
    • US20090161600A1
    • 2009-06-25
    • US11629295
    • 2006-06-13
    • Shuichi SatoYasuo HamamotoHiroshi HayashinoKazuhiro OhtaYosuke UkitaHironori NakaeYoshitaka Ohta
    • Shuichi SatoYasuo HamamotoHiroshi HayashinoKazuhiro OhtaYosuke UkitaHironori NakaeYoshitaka Ohta
    • H04W88/08
    • H04W28/06H04W8/26H04W68/00H04W84/22
    • In a network area of a wireless network managed by a wireless master device, a wireless slave device performs wireless network communication with another wireless slave device connected by wire to a terminal, and wired network communication with a terminal connected by wire to the wireless slave device. The wireless slave device includes a wireless reception unit (121) that wirelessly receives a notification frame including a MAC address of the terminal connected by wire to the other wireless slave device and a MAC address of the other wireless slave device, a storage unit (112) that associates and stores the MAC address of the other wireless slave device and the MAC address of the terminal both included in the wirelessly received notification frame, a wire reception unit (120) that receives a frame transmitted from the terminal connected by wire to the wireless slave device, and a filtering unit (111) that discards the frame if the transmission destination MAC address of the frame received by wire does not match the MAC address stored in the storage unit.
    • 在由无线主设备管理的无线网络的网络区域中,无线从设备执行与通过有线连接到终端的另一无线从设备的无线网络通信,以及与通过有线连接到无线从设备的终端的有线网络通信 。 无线从设备包括:无线接收单元(121),无线接收包括通过有线连接到另一无线从设备的终端的MAC地址的通知帧和另一无线从设备的MAC地址;存储单元(112) ),其将所述另一无线从设备的MAC地址和所述终端的MAC地址相关联并存储在所述无线接收通知帧中,所述有线接收单元(120)接收从通过有线连接到所述终端的所述终端发送的帧 无线从设备,以及如果由有线接收的帧的发送目的地MAC地址与存储在存储单元中的MAC地址不匹配的丢弃帧的过滤单元(111)。
    • 10. 发明授权
    • Relay device, receiving device, transmitting device, and relay method
    • 中继设备,接收设备,发送设备和中继方式
    • US09236931B2
    • 2016-01-12
    • US13696819
    • 2012-04-03
    • Yosuke UkitaHironori NakaeHiroshi Hayashino
    • Yosuke UkitaHironori NakaeHiroshi Hayashino
    • H04B7/15H04W16/26H04B7/155
    • H04B7/15H04B7/15528H04W16/26
    • A relay device according to the present invention includes: a receiving unit which receives a frame; a transmitting unit which transmits a frame; a frame determination unit which stores therein the first frame when the frame determination unit determines that the received frame is the first frame; a proxy ACK generation unit which generates a third frame which is a proxy frame of a second frame which is a frame to be transmitted from the receiving device, as a receipt acknowledgement to the first frame; and a communication control unit which: causes the transmitting unit to transmit the third frame; sets an extended active period in the inactive period subsequent to the active period; and transmits the first frame in the extended active period when the receiving unit does not receive the second frame within a predetermined period after reception of the first frame.
    • 根据本发明的中继装置包括:接收单元,其接收帧; 发送单元,发送帧; 帧确定单元,其在帧确定单元确定接收到的帧是第一帧时在其中存储第一帧; 代理ACK生成单元,其生成作为要从所述接收装置发送的帧的第二帧的代理帧作为对所述第一帧的接收确认的第三帧; 以及通信控制单元,其使所述发送单元发送所述第三帧; 在活跃期之后的非活动期间设置延长的活动期; 并且在接收单元在接收到第一帧之后的预定时段内没有接收到第二帧时,在扩展活动期间内发送第一帧。