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    • 2. 发明授权
    • Radio network system
    • 无线网络系统
    • US06934516B2
    • 2005-08-23
    • US10454634
    • 2003-06-05
    • Tomoyuki HaradaTakuji HamadaHideaki MasukoShinichi HanadaYoshiaki AdachiHisao Ogawa
    • Tomoyuki HaradaTakuji HamadaHideaki MasukoShinichi HanadaYoshiaki AdachiHisao Ogawa
    • H04Q7/38H04L1/00H04L12/28H04L13/08H04L29/08H04B7/00
    • H04L1/0002H04L1/0025
    • Occurrence of significant difference of transmission rate between communication zones can be prevented to maintain the transmission rate of overall network uniform. The radio network system includes a plurality of radio communication control units are connected with each other via radio main line, and each radio communication control unit has a communication function with at least one radio communication terminal arranged within own communication area. Each of the radio communication control units includes means for broadcasting a transmission rate restriction demand to all of other radio communication control units and all of radio communication terminals when data amount stored in a transmission and reception buffer exceeds a predetermined threshold value, and means for lowering a transmission rate when a transmission rate restriction demand is received from any other radio communication control unit within a predetermined period and for increasing the transmission rate when no transmission rate restriction demand is received from any other radio communication control unit.
    • 可以防止通信区间传输速率的显着差异的发生,保持整个网络的传输速率均匀。 无线电网络系统包括经由无线电主线彼此连接的多个无线电通信控制单元,并且每个无线电通信控制单元具有布置在自身通信区域内的至少一个无线电通信终端的通信功能。 每个无线电通信控制单元包括当存储在发送和接收缓冲器中的数据量超过预定阈值时向所有其他无线电通信控制单元和所有无线电通信终端广播传输速率限制请求的装置,以及用于降低 在预定时间段内从任何其他无线电通信控制单元接收到传输速率限制请求的传输速率,并且当从任何其他无线电通信控制单元接收到没有传输速率限制请求时增加传输速率。
    • 3. 发明授权
    • Radio relay system
    • 无线中继系统
    • US06728541B2
    • 2004-04-27
    • US09790666
    • 2001-02-23
    • Yoshinori OhkuraMasahiro TakahashiHideaki MasukoShinichi UedaTakuji Hamada
    • Yoshinori OhkuraMasahiro TakahashiHideaki MasukoShinichi UedaTakuji Hamada
    • H04Q720
    • H04B7/2606H04B7/15542H04L12/42H04W16/26
    • A plurality of radio relay stations 1 are connected so that bi-directional ring-like paths are made up of radio transmission paths. The respective radio relay stations 1 bidirectionally transmit data inputted from terminals placed thereunder onto the bidirectional ring-like paths respectively. The respective data are respectively received by radio relay stations 2 having data destination terminals placed thereunder along the bidirectional ring-like paths. Each radio relay station, which has received the data destined for the terminals placed thereunder from both directions, transmits earlier incoming data to each terminal placed thereunder and discards later incoming data. Thus, a radio relay system can be implemented which is capable of relaying data with a high degree of reliability.
    • 连接多个无线中继站1,使得双向环状路径由无线传输路径组成。 各无线电中继站1将分别从其放置的终端输入的数据双向传输到双向环状路径上。 相应的数据分别由具有沿着双向环状路径放置在其下的数据目的地终端的无线电中继站2接收。 已经接收到从两个方向放置在其下的终端的数据的每个无线电中继站将较早的进入数据发送到放置在其下的每个终端,并丢弃稍后的传入数据。因此,可以实现能够中继数据的无线电中继系统 具有很高的可靠性。
    • 4. 发明授权
    • Wireless communications device and wireless communications method
    • 无线通信设备和无线通信方式
    • US08817851B2
    • 2014-08-26
    • US13578053
    • 2011-02-15
    • Setsuo AritaShinji MurataYuji IchinoseHideaki Masuko
    • Setsuo AritaShinji MurataYuji IchinoseHideaki Masuko
    • H04B1/38
    • H04W28/04H04L1/0061H04L1/0072H04L1/0079H04L1/008H04L1/08
    • Disclosed is a wireless communications device with strong realtime performance, giving rise to no latency in communications even if communications errors arise in the communication frame MAC header. MAC header information is used to determine whether or not the destination address of a received data frame is the address of a concerned wireless communications device (1). MAC header information allocated among a plurality of MAC headers is employed in selecting MAC header information without errors. If all MAC header information is in error, a majority determination processing unit (13) is used to effect a majority determination of the MAC header information and generate correct MAC header information. A received data extraction unit (14) removes the received frame header, etc., extracts the received data, and outputs same to an external device.
    • 公开了一种具有强实时性能的无线通信设备,即使在通信帧MAC报头中出现通信错误,也不会导致通信延迟。 MAC头信息用于确定接收到的数据帧的目的地地址是否是相关无线通信设备(1)的地址。 在多个MAC头之间分配的MAC头信息被采用来选择MAC头信息而没有错误。 如果所有MAC头信息都是错误的,则多数确定处理单元(13)用于对MAC头信息进行多数确定,并生成正确的MAC头信息。 接收数据提取单元(14)去除所接收的帧头等,提取接收到的数据,并将其输出到外部设备。