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    • 2. 发明授权
    • Radio communication system, radio base station, radio relay station, and handover control method
    • 无线电通信系统,无线电基站,无线电中继站和切换控制方法
    • US09237501B2
    • 2016-01-12
    • US13395073
    • 2010-09-09
    • Mitsuhiro Kitaji
    • Mitsuhiro Kitaji
    • H04W36/00H04W36/22H04B7/155H04W84/04
    • H04W36/22H04B7/155H04W84/047
    • A radio communication system (1) is disclosed, in which a relay node (200) is connected to a radio base station (100A), radio terminals (300E-300G) are connected to the relay node (200), and the communication between each of the radio terminals (300E-300G) and the radio base station (100A) is relayed by the relay node (200). When the base station load, which is the load of the radio base station (100A), has exceeded a threshold value, the radio base station (100A) transmits, to the relay node (200), either the command of a relay handover in which the relay node (200) changes its connecting destination or the command of a terminal handover in which any one of the radio terminals (300E-300G) changes its connecting destination. The relay node (200) executes the relay handover in a case of receipt of the relay handover command from the radio base station (100A) or transfers the terminal handover command in a case of receipt of the terminal handover command from the radio base station (100A).
    • 公开了一种无线电通信系统(1),其中中继节点(200)连接到无线电基站(100A),无线电终端(300E-300G)连接到中继节点(200),并且通信 各个无线终端(300E-300G)和无线基站(100A)由中继节点(200)中继。 当作为无线基站(100A)的负载的基站负载超过阈值时,无线基站(100A)向中继节点(200)发送中继切换的命令 中继节点(200)改变其连接目的地或终端切换的命令,其中无线终端(300E-300G)中的任何一个改变其连接目的地。 在从无线基站(100A)接收到中继切换命令的情况下,中继节点(200)执行中继切换,或者在从无线基站接收到终端切换命令的情况下,传送终端切换命令( 100A)。
    • 4. 发明授权
    • Radio communication device
    • 无线通信设备
    • US09155015B2
    • 2015-10-06
    • US12671492
    • 2008-07-29
    • Mitsuhiro Kitaji
    • Mitsuhiro Kitaji
    • H04W36/00H04W36/30
    • H04W36/30H04W36/0083
    • A radio terminal (100) according to a present invention stores a handover threshold in association with an application being executed, when the communication quality of the application is degraded, the handover threshold being based on a piece of radio state information equivalent to that at a time when the communication quality is determined to be degraded. The radio terminal (100) stores the amount of variation of the radio state information in association with the radio communication system. The radio terminal (100) executes handover to a different radio communication system on the basis of the radio state information, the stored handover threshold and the stored amount of the variation.
    • 根据本发明的无线电终端(100)在应用程序的通信质量下降的情况下,与正在执行的应用相关联地存储切换阈值,切换阈值基于与第 确定通信质量降低的时间。 无线终端(100)存储与无线通信系统相关联的无线状态信息的变化量。 无线终端(100)根据无线电状态信息,存储的切换阈值和存储的变化量来执行到不同的无线电通信系统的切换。
    • 10. 发明授权
    • Wireless communication terminal and control method thereof
    • 无线通信终端及其控制方法
    • US08306565B2
    • 2012-11-06
    • US12877883
    • 2010-09-08
    • Mitsuhiro KitajiTakashi Matsumura
    • Mitsuhiro KitajiTakashi Matsumura
    • H04B7/00
    • H04W52/36H04B1/3816
    • In a PC card communication terminal that operates supplied with power from a host device, problems such as malfunctions due to a supply voltage drop at the time of high transmission output are prevented from occurring. A baseband processor (1106) selects a transmission-power upper-limit measurement mode when a PC card terminal (1103) is to be controlled for the first time. A supply voltage drop is measured by a voltage measurement circuit (1114) while a load value of a load circuit (1112) is being changed. The load value of the load circuit (1112) when the supply voltage decreases to a permissible lowest supply voltage is obtained. Using a conversion table stored in a memory (1107), the load value is converted into a transmission output and is set as a transmission-output upper limit. In a normal communication mode, a maximum transmission output is restricted based on this transmission-output upper limit.
    • 在从主机装置供电的PC卡通信终端中,防止由于高传输输出时的电源电压下降引起的故障等问题。 当首次要控制PC卡终端(1103)时,基带处理器(1106)选择发送功率上限测量模式。 当负载电路(1112)的负载值正在改变时,由电压测量电路(1114)测量电源电压降。 获得当电源电压降低到允许的最低电源电压时负载电路(1112)的负载值。 使用存储在存储器(1107)中的转换表,将负载值转换为发送输出,并将其设置为发送 - 输出上限。 在正常通信模式中,基于该传输输出上限来限制最大传输输出。