公开(公告)号：US20080170555A1

公开(公告)日：2008-07-17

申请号：US12076140

申请日：2008-03-14

申请人： Katsuhiko Tsunehara ,  Takashi Yano ,  Nobukazu Doi ,  Takaki Uta ,  Keiji Hasegawa

发明人： Katsuhiko Tsunehara ,  Takashi Yano ,  Nobukazu Doi ,  Takaki Uta ,  Keiji Hasegawa

IPC分类号： H04B7/216

CPC分类号： H04W52/54 ,  H04W52/146 ,  H04W52/245 ,  H04W52/58 ,  H04W88/08

摘要： An uplink channel transmission power control method is provided for a CDMA mobile communication system performing one way communication. A base station measures the received level of data transmitted from each mobile terminal at each channel, and generates a transmission power control signal of each uplink traffic channel. The generated transmission power control signals are multiplexed, and the multiplexed common transmission power control signal is transmitted to all mobile terminals by using the common channel shared by the mobile terminals. Each mobile terminal derives the transmission power control signal of the uplink traffic channel used by the terminal, from the received common transmission power control signal, and controls the transmission power of a data packet.

摘要翻译： 为执行单向通信的CDMA移动通信系统提供上行信道发送功率控制方法。 基站测量在每个信道从每个移动终端发送的数据的接收电平，并且生成每个上行链路业务信道的发送功率控制信号。 所生成的发送功率控制信号被复用，并且通过使用由移动终端共享的公共信道将多路复用的公共发送功率控制信号发送到所有移动终端。 每个移动终端从接收到的公共发送功率控制信号中导出终端使用的上行链路业务信道的发送功率控制信号，并控制数据分组的发送功率。

公开(公告)号：US20080045261A1

公开(公告)日：2008-02-21

申请号：US11907537

申请日：2007-10-15

申请人： Katsuhiko Tsunehara ,  Takashi Yano ,  Nobukazu Doi ,  Takaki Uta ,  Keiji Hasegawa

发明人： Katsuhiko Tsunehara ,  Takashi Yano ,  Nobukazu Doi ,  Takaki Uta ,  Keiji Hasegawa

IPC分类号： H04Q7/20

CPC分类号： H04W52/54 ,  H04W52/146 ,  H04W52/245 ,  H04W52/58 ,  H04W88/08

摘要： An uplink channel transmission power control method is provided for a CDMA mobile communication system performing one way communication. A base station measures the received level of data transmitted from each mobile terminal at each channel, and generates a transmission power control signal of each uplink traffic channel. The generated transmission power control signals are multiplexed, and the multiplexed common transmission power control signal is transmitted to all mobile terminals by using the common channel shared by the mobile terminals. Each mobile terminal derives the transmission power control signal of the uplink traffic channel used by the terminal, from the received common transmission power control signal, and controls the transmission power of a data packet.

摘要翻译： 为执行单向通信的CDMA移动通信系统提供上行信道发送功率控制方法。 基站测量在每个信道从每个移动终端发送的数据的接收电平，并且生成每个上行链路业务信道的发送功率控制信号。 所生成的发送功率控制信号被复用，并且通过使用由移动终端共享的公共信道将多路复用的公共发送功率控制信号发送到所有移动终端。 每个移动终端从接收到的公共发送功率控制信号中导出终端使用的上行链路业务信道的发送功率控制信号，并控制数据分组的发送功率。

公开(公告)号：US20070293269A1

公开(公告)日：2007-12-20

申请号：US11716541

申请日：2007-03-09

申请人： Mikio Kuwahara ,  Nobukazu Doi ,  Toshiro Suzuki ,  Yuji Ishida ,  Takashi Inoue ,  Sumaru Niida

发明人： Mikio Kuwahara ,  Nobukazu Doi ,  Toshiro Suzuki ,  Yuji Ishida ,  Takashi Inoue ,  Sumaru Niida

IPC分类号： H04M1/00

CPC分类号： H04B7/086 ,  H01Q1/246 ,  H01Q3/267 ,  H01Q3/30 ,  H04B7/0617 ,  H04B17/12 ,  H04B17/20 ,  H04W16/28

摘要： A radio base station apparatus provided with an array antenna having a plurality of antenna elements for calibrating a phase difference among the array antenna elements. The base station has a probe signal adding unit which divides one probe signal and adds the divided probe signals to each receive signals received by the plurality of antenna elements. A probe data extracting unit extracts the probe data from the receive signals added with the probe signal. A phase calibration calculation unit calculates correlating phase calibration values required for calibrating a phase of each receive signal based on the probe data extracted by the probe signal extracting unit. A phase calibration unit calibrates a phase difference among the array antenna elements by calibrating the phase of the each receive signal based on the phase calibration from the phase calibration calculation unit.

摘要翻译： 一种具有阵列天线的无线基站装置，具有多个天线元件，用于校准阵列天线元件之间的相位差。 基站具有探测信号添加单元，其分割一个探测信号，并将划分的探测信号加到由多个天线元件接收的每个接收信号。 探测数据提取单元从添加有探测信号的接收信号中提取探测数据。 相位校正计算单元基于由探测信号提取单元提取的探测数据来计算校准每个接收信号的相位所需的相关校准值。 相位校准单元通过基于来自相位校准计算单元的相位校准来校准每个接收信号的相位来校准阵列天线元件之间的相位差。

公开(公告)号：US20070223425A1

公开(公告)日：2007-09-27

申请号：US11798659

申请日：2007-05-16

申请人： Hironari Masui ,  Yasuo Ohgoshi ,  Takashi Yano ,  Nobukazu Doi

发明人： Hironari Masui ,  Yasuo Ohgoshi ,  Takashi Yano ,  Nobukazu Doi

IPC分类号： H04B7/216

CPC分类号： H04W72/0446 ,  H04B1/707 ,  H04B7/2637 ,  H04W72/0466 ,  H04W72/1263 ,  H04W74/085

摘要： A radio communication system having a base station and a plurality of radio terminals, wherein each radio terminal having a transmission request transmits a reservation packet at arbitrary timing through a reservation channel in accordance with a CDMA scheme, and the base station assigns a traffic channel and a time slot to be used to each radio terminal requesting a reservation through a reply packet outputted onto a reply channel. On the reservation channel, a short spreading code corresponding to a matched filter is applied.

公开(公告)号：US07203462B2

公开(公告)日：2007-04-10

申请号：US10674455

申请日：2003-09-29

申请人： Mikio Kuwahara ,  Nobukazu Doi ,  Toshiro Suzuki ,  Yuji Ishida ,  Takashi Inoue ,  Sumaru Niida

发明人： Mikio Kuwahara ,  Nobukazu Doi ,  Toshiro Suzuki ,  Yuji Ishida ,  Takashi Inoue ,  Sumaru Niida

IPC分类号： H04B17/00

CPC分类号： H04B7/086 ,  H01Q1/246 ,  H01Q3/267 ,  H01Q3/30 ,  H04B7/0617 ,  H04B17/12 ,  H04B17/20 ,  H04W16/28

摘要： Phase and amplitude deviations, which are generated, for example, by cables connecting an array antenna of a CDMA base station and the base station, are calibrated in the baseband.The base station comprises: an antenna apparatus 1; couplers 2; an RF unit 3 that converts a receive signal to a baseband signal, converts a transmit signal to a radio frequency, and performs power control; an A/D converter 4 for converting a receive signal to a digital signal; a receive beam form unit 6 that multiplies the receive signal by semi-fixed weight; a despreader 7 for this signal input; a time-space demodulator 8 for demodulating user data; a despreader 9 for probe signal; a space modulator 14 for user data; a spreader 13 for user signal; a channel combiner 12; a Tx calibrater 11 for controlling calibration of a signal; a D/A converter 10; a unit 16 for calculation of correlation matrix for generating a probe signal used for controlling an Rx calibration system and a TX calibration system; a spreader 17 for probe signal; a power control unit 18; a D/A converter 19; an RF unit 20 for probe signal; an A/D converter 21 for signal from the couplers 2; and a despreader 22.

摘要翻译： 在基带中校准例如通过连接CDMA基站的阵列天线和基站的电缆产生的相位和振幅偏差。

公开(公告)号：US20070032197A1

公开(公告)日：2007-02-08

申请号：US11544655

申请日：2006-10-10

申请人： Riaz Esmailzadeh ,  Takashi Yano ,  Nobukazu Doi

发明人： Riaz Esmailzadeh ,  Takashi Yano ,  Nobukazu Doi

IPC分类号： H04B17/00

CPC分类号： H04W52/24 ,  H04W52/362

摘要： A method and apparatus for controlling the power of a signal transmitted between a base station and a mobile terminal which constitute a mobile communication system. At least one of the base station and the mobile terminal has functions to compare a predetermined reference value and a necessary transmission power obtained as a result of transmission power control in order to compensate for a signal intensity fluctuation occurring on a link between the base station and the mobile terminal, temporarily stopping the transmission if the necessary transmission power is larger than a predetermined permissible value, and transmit the signal if the necessary transmission power is equal to or smaller than the predetermined permissible value.

摘要翻译： 一种用于控制在构成移动通信系统的基站和移动终端之间传输的信号的功率的方法和装置。 基站和移动终端中的至少一个具有将预定参考值和作为发送功率控制的结果获得的必要发送功率进行比较的功能，以便补偿基站与基站之间的链路上发生的信号强度波动 如果必要的发送功率大于预定的允许值，则暂时停止发送，并且如果必要的发送功率等于或小于预定的允许值则发送该信号。

公开(公告)号：US06920122B1

公开(公告)日：2005-07-19

申请号：US09544479

申请日：2000-04-07

申请人： Seishi Hanaoka ,  Yusuke Uchida ,  Nobukazu Doi

发明人： Seishi Hanaoka ,  Yusuke Uchida ,  Nobukazu Doi

IPC分类号： H04W16/10 ,  H04W16/28 ,  H04W36/18 ,  H04W88/08 ,  H04Q7/00

CPC分类号： H04W88/08 ,  H04W16/10 ,  H04W16/28 ,  H04W28/16 ,  H04W36/18

摘要： A control method of assigning a channel so as to cope flexibly with voice and high speed data communication services having different transmission rates in code-division multiple connection communications. A load required for a channel processing is compared with an allowable load, and a channel is assigned within the allowable load. When assignment of a busy channel is changed so as to be processed in another hardware, the synchronization of the processing is established first at the destination, then the channel is switched. It is thus possible to distribute hardware resources and software processings efficiently to users.

摘要翻译： 一种分配信道以便在代码分割多连接通信中具有不同传输速率的语音和高速数据通信业务灵活应对的控制方法。 将通道处理所需的负载与允许负载进行比较，并在允许的负载内分配通道。 当忙信道的分配被改变以在另一硬件中被处理时，首先在目的地建立处理的同步，然后切换信道。 因此可以有效地向用户分配硬件资源和软件处理。

公开(公告)号：US20050140543A1

公开(公告)日：2005-06-30

申请号：US11059407

申请日：2005-02-17

申请人： Katsuhiko Tsunehara ,  Nobukazu Doi ,  Mikio Kuwahara ,  Tomoaki Ishifuji

发明人： Katsuhiko Tsunehara ,  Nobukazu Doi ,  Mikio Kuwahara ,  Tomoaki Ishifuji

IPC分类号： G01S1/02 ,  G01S1/04 ,  G01S5/10 ,  G01S19/19 ,  G01S19/25 ,  H04B1/7113 ,  H04J13/00 ,  H04W64/00 ,  H04W88/02 ,  G01S13/08 ,  H04B1/69

CPC分类号： G01S5/0215 ,  G01S1/026 ,  G01S1/045 ,  G01S5/10 ,  H04B1/70755 ,  H04B2201/70715

摘要： By using the delay profile created by delay profile creating section 102 and the first threshold value 330 received from the first threshold value calculation 105, the first threshold value timing detection section 103 selects only the earliest receive timing exceeding the first threshold value, from all the timing that the correlation value in the delay profile becomes a maximum. By using the receive timing and the second threshold value 331 received from the second threshold value calculation section 107, reference timing calculation section 106 selects the reference timing required for calculating the receive timing for the incoming wave of the minimum propagation delay time. The timing delayed by previously set timing behind said reference timing is sent from receive timing calculation section 108 as the receive timing 113 of the incoming wave of the minimum propagation delay time.

摘要翻译： 通过使用由延迟分布创建部102创建的延迟分布和从第一阈值计算105接收到的第一阈值330，第一阈值定时检测部103仅从超过第一阈值的时间选择最早的接收定时 定时延迟分布中的相关值变为最大值。 通过使用从第二阈值计算部107接收到的接收定时和第二阈值331，基准定时计算部106选择计算最小传播延迟时间的入射波的接收定时所需的基准定时。 从接收定时计算部108发送作为最小传播延迟时间的输入波的接收定时113的从基准定时之后预先设定的定时延迟的定时。

公开(公告)号：US06879575B1

公开(公告)日：2005-04-12

申请号：US09518675

申请日：2000-03-03

申请人： May Suzuki ,  Nobukazu Doi ,  Takashi Yano

发明人： May Suzuki ,  Nobukazu Doi ,  Takashi Yano

IPC分类号： H04B1/707 ,  H04B7/26 ,  H04J13/00 ,  H04B7/216

CPC分类号： H04B7/2668 ,  H04B1/7075 ,  H04B1/708 ,  H04B7/2628 ,  H04W72/042

摘要： In a mobile communication system using a code division multiple access (CDMA) method, spreading code detection and frame/slot timing synchronization (cell search) is conducted by using a long code masked symbol. The spreading factor of the long code masked symbol is set to a value lower than spreading factors of other ordinary symbols. As a result, it becomes possible to reduce the circuit scale and power dissipation of the mobile terminal and raise the speed of cell search.

公开(公告)号：US06804216B1

公开(公告)日：2004-10-12

申请号：US09595896

申请日：2000-06-20

申请人： Mikio Kuwahara ,  Nobukazu Doi

发明人： Mikio Kuwahara ,  Nobukazu Doi

IPC分类号： H04B7216

CPC分类号： H04J13/004 ,  H04B7/2628 ,  H04J13/18 ,  H04W16/24 ,  H04W36/12

摘要： It is desired to carry out CDMA communication using an optimum spread code for minimizing inter-channel interference according to communication conditions. For this purpose, under condition that a communication area covered by a base station is variable, notification of spread code reassignment is issued while communication is being made between the base station and a mobile terminal. Thereafter, a currently assigned spread code is changed so as to reduce interference between a channel used for communication in progress and another channel. In spread code reassignment, an adjustment is made to provide the same long code for channels which would otherwise incur significant interference.

摘要翻译： 期望使用最佳扩频码进行CDMA通信，以根据通信条件使信道间干扰最小化。 为此，在由基站覆盖的通信区域变化的条件下，在基站和移动终端之间进行通信的同时，发出扩展码重新分配的通知。 此后，改变当前分配的扩展码，以便减少用于正在进行的通信的信道与另一信道之间的干扰。 在扩展代码重新分配中，进行调整以为否则将产生显着干扰的信道提供相同的长码。