公开(公告)号：US06907250B2

公开(公告)日：2005-06-14

申请号：US10017597

申请日：2001-12-18

申请人： Yoshihiro Ishikawa ,  Seizo Onoe ,  Kazunori Obata ,  Takaaki Sato

发明人： Yoshihiro Ishikawa ,  Seizo Onoe ,  Kazunori Obata ,  Takaaki Sato

IPC分类号： H04L12/28 ,  H04W16/02 ,  H04W28/00 ,  H04W28/20 ,  H04W72/04 ,  H04W72/06 ,  H04W76/02 ,  H04W84/12 ,  H04Q7/20

CPC分类号： H04W28/20 ,  H04W72/06

摘要： A mobile communication system includes a plurality of base stations and a mobile station communicating with the base station through a wireless channel. The system comprises a part which measures an amount of information transferred between the base station and the mobile station and a comparator which compares the measured amount of information with first and second threshold values corresponding to a currently used wireless channel. A wireless channel changeover part changes the current wireless channel to a wireless channel with a transmission capability higher or lower than that of the current wireless channel when the measured amount of information is above the first threshold value or below the second threshold value, respectively.

摘要翻译： 移动通信系统包括多个基站和通过无线信道与基站通信的移动台。 该系统包括测量在基站和移动站之间传送的信息量的部分以及将测量的信息量与对应于当前使用的无线信道的第一和第二阈值进行比较的比较器。 当测量的信息量分别高于第一阈值或低于第二阈值时，无线信道切换部分将当前无线信道改变为具有比当前无线信道的传输能力更高或更低的传输能力的无线信道。

公开(公告)号：US07388832B2

公开(公告)日：2008-06-17

申请号：US10828266

申请日：2004-04-21

申请人： Rie Nagato ,  Yoshihiro Ishikawa ,  Kazunori Obata ,  Seizo Onoe

发明人： Rie Nagato ,  Yoshihiro Ishikawa ,  Kazunori Obata ,  Seizo Onoe

IPC分类号： H04L12/26 ,  H04L12/28 ,  H04J3/16

CPC分类号： H04Q11/04 ,  H04Q2213/1325 ,  H04Q2213/13256 ,  H04Q2213/1337

摘要： A call-admission controller is disclosed that allocates, out of shared resources in a communications system, resources required for communication in multiple calls of different priorities. The controller includes an impact-judging unit configured to make a judgment of, when having detected a low-priority call, the impact of the low priority call on the communications system, and a low-priority call admission-determining unit configured to make, based on the impact of which the judgment is made, a determination of whether to admit the low-priority call.

摘要翻译： 公开了一种呼叫接纳控制器，其在通信系统中的共享资源中分配在不同优先级的多个呼叫中进行通信所需的资源。 该控制器包括：影响判断单元，被配置为当检测到低优先级呼叫时对低优先级呼叫对通信系统的影响进行判断;低优先级呼叫许可确定单元， 基于判断的影响，确定是否承认低优先级呼叫。

公开(公告)号：US07193978B2

公开(公告)日：2007-03-20

申请号：US10072993

申请日：2002-02-12

申请人： Yoshihiro Ishikawa ,  Seizo Onoe ,  Takaaki Sato ,  Yoshitaka Hiramoto ,  Takehiro Nakamura

发明人： Yoshihiro Ishikawa ,  Seizo Onoe ,  Takaaki Sato ,  Yoshitaka Hiramoto ,  Takehiro Nakamura

IPC分类号： H04B7/216

CPC分类号： H04J13/16 ,  H04B2201/7071 ,  H04W16/14 ,  H04W24/00 ,  H04W72/0466 ,  H04W88/08

摘要： A radio channel setting control method for communications between a base-station apparatus and a mobile-station apparatus in a mobile communications system employing a CDMA scheme comprising the steps of: a) determining whether or not a spread code used for the communications can be allocated; b) determining whether or not a predetermined hardware device can be allocated; c) determining whether or not a radio resource can be allocated; d) setting the radio channel between the base-station apparatus and mobile-station apparatus when it is determined that the spread code, predetermined hardware device and radio resource can be allocated.

摘要翻译： 一种用于采用CDMA方案的移动通信系统中的基站装置与移动台装置之间的通信的无线电信道设置控制方法，包括以下步骤：a）确定是否可以分配用于通信的扩展码 ; b）确定是否可以分配预定的硬件设备; c）确定是否可以分配无线电资源; d）当确定可以分配扩展码，预定硬件设备和无线电资源时，设置基站装置和移动台装置之间的无线电信道。

公开(公告)号：US07492784B2

公开(公告)日：2009-02-17

申请号：US10044945

申请日：2002-01-15

申请人： Mikio Iwamura ,  Yoshihiro Ishikawa ,  Seizo Onoe ,  Takehiro Nakamura ,  Takahiro Hayashi ,  Yoshiaki Oofuji

发明人： Mikio Iwamura ,  Yoshihiro Ishikawa ,  Seizo Onoe ,  Takehiro Nakamura ,  Takahiro Hayashi ,  Yoshiaki Oofuji

IPC分类号： H04J3/16

CPC分类号： H04W28/16 ,  H04W28/24

摘要： Resource measurement device 32 acquires a measured value x of the resource use condition in transmitting/receiving section 20 in respect of the wireless resource that is the subject of monitoring. Also, correction value calculation device 33 calculates a correction value in accordance with the number of packet users at transmitting/receiving section 20 and adjustment device 34 adjusts the call acceptance threshold value xc using the correction value, so as to obtain a corrected threshold value xc′. Comparator 35 then compares the measured value of the resource use condition x and the corrected threshold value xc′ and outputs the comparison result to call acceptance control device 31. If x≧xc′, call acceptance control device 31 restricts acceptance of new calls. Thus, the call acceptance control method, mobile communication system and base station device whereby deterioration of communication quality is suppressed irrespective of the switching system are provided in mobile communication in which multiple access is performed with shared wireless resources.

公开(公告)号：US06999427B1

公开(公告)日：2006-02-14

申请号：US09619361

申请日：2000-07-19

申请人： Masafumi Usuda ,  Yoshihiro Ishikawa ,  Seizo Onoe

发明人： Masafumi Usuda ,  Yoshihiro Ishikawa ,  Seizo Onoe

IPC分类号： H04B7/185

CPC分类号： H04W52/228 ,  H04B17/318 ,  H04B17/391 ,  H04W52/225 ,  H04W52/243

摘要： In a CDMA reception apparatus, averaging part for averaging at least one of vector, amplitude and power of received signal of a plurality of transmit power control sections is provided. Further, propagation path variation estimator for estimating a propagation path variation of the present transmit power control section from respective transmit power control sections in the past to obtain a propagation path variation estimation value and propagation path variation correction part (multiplier) for correcting by the propagation path variation estimation value are further provided, wherein the averaging part averages at least one of vector, amplitude and power of received signal of the plurality of transmit power control sections corrected by the propagation path variation correction part (multiplier). With this configuration, the measurement accuracy is improved by measuring received signal power using a plurality of slots including past slots, resulting in more accurate transmit power control.

摘要翻译： 在CDMA接收装置中，提供了对多个发送功率控制部的接收信号的向量，幅度和功率中的至少一个进行平均的平均部。 此外，传播路径变化估计器用于从过去的各个发射功率控制部分估计当前发射功率控制部分的传播路径变化，以获得用于通过传播校正的传播路径变化估计值和传播路径变化校正部分（乘法器） 进一步提供路径变化估计值，其中平均部分对由传播路径变化校正部分（乘法器）校正的多个发射功率控制部分的接收信号的矢量，幅度和功率中的至少一个进行平均。 利用这种配置，通过使用包括过去时隙的多个时隙测量接收信号功率来提高测量精度，导致更准确的发射功率控制。

公开(公告)号：US06697622B1

公开(公告)日：2004-02-24

申请号：US09655122

申请日：2000-09-05

申请人： Yoshihiro Ishikawa ,  Seizo Onoe ,  Kazufumi Yunoki ,  Akihiro Higashi

发明人： Yoshihiro Ishikawa ,  Seizo Onoe ,  Kazufumi Yunoki ,  Akihiro Higashi

IPC分类号： H04Q720

CPC分类号： H04W36/0083 ,  H04B1/70735 ,  H04B1/7083 ,  H04B2201/70702 ,  H04W48/16 ,  H04W48/20 ,  H04W52/0216 ,  Y02D70/164 ,  Y02D70/20 ,  Y02D70/40

摘要： A control method of searching for a neighboring cell of a mobile station communicating with a base station is provided in a direct sequence CDMA mobile communication system which transmits information by carrying out double modulation using a first spreading code group and a second spreading code. The first spreading code group includes spreading codes that have a same repetition period as an information symbol period and are used in common by the base stations, and the second spreading code has a repetition period longer than the information symbol period. The base stations are assigned different second spreading codes. The control method stores at least one second spreading code and its phase into a first table, which second spreading code corresponds to a perch channel whose second spreading code and phase are known; stores a second spreading code used by a neighboring base station into a second table; searches for a perch channel whose second spreading code and phase are unknown; and searches for a perch channel whose second spreading code and phase are known. The neighboring cell search method can save the power consumption and time required for the mobile station to carry out the cell search with preventing an increase in the total cost of the system.

摘要翻译： 在通过使用第一扩展码组和第二扩展码进行双重调制来发送信息的直接序列CDMA移动通信系统中，提供了搜索与基站通信的移动台的相邻小区的控制方法。 第一扩展码组包括与信息符号周期具有相同重复周期的扩展码，并且由基站共同使用，并且第二扩展码具有比信息符号周期长的重复周期。 基站被分配不同的第二扩展码。 控制方法将至少一个第二扩展码及其相位存储在第一表中，该第二扩展码对应于其第二扩展码和相位已知的导频信道; 将相邻基站使用的第二扩展码存储到第二表中; 搜索其第二扩频码和相位未知的导频信道; 并搜索其第二扩展码和相位是已知的导频信道。 相邻小区搜索方法可以节省移动台执行小区搜索所需的功耗和时间，从而防止系统总成本的增加。

公开(公告)号：US06453166B1

公开(公告)日：2002-09-17

申请号：US09402034

申请日：2000-02-01

申请人： Yoshihiro Ishikawa ,  Etsuhiro Nakano ,  Minami Ishii ,  Masafumi Hata ,  Seizo Onoe

发明人： Yoshihiro Ishikawa ,  Etsuhiro Nakano ,  Minami Ishii ,  Masafumi Hata ,  Seizo Onoe

IPC分类号： H04Q320

CPC分类号： H04W16/10 ,  H04W16/32 ,  H04W24/02 ,  H04W52/40 ,  H04W72/02

摘要： A decision is made as to whether a radio base station acting as an interference source is present in a macrocell or microcell, so that the interference from a mobile station transmitting high power can be presented in advance. The base station inserts its transmission power value of a forward broadcast channel into broadcast information. A newly installed base station C, receiving a forward frequency band, measures the received level of the broadcast channel, and captures the transmission power value. When the transmission power value is large, the threshold value is reduced (THRb), and when the transmission power value is small, the threshold value is increased (THRa). If the received level L is less than the threshold value, a decision is made that the channel is available.

摘要翻译： 做出作为干扰源的无线基站是否存在于宏小区或微小区中的决定，从而能够提前发送来自发送高功率的移动台的干扰。 基站将前向广播信道的发送功率值插入到广播信息中。 接收正向频带的新安装的基站C测量广播信道的接收电平，并捕获发送功率值。 当发送功率值大时，阈值减小（THRb），发送功率值小时阈值增加（THRa）。 如果接收电平L小于阈值，则确定信道可用。

公开(公告)号：US07649859B2

公开(公告)日：2010-01-19

申请号：US11264199

申请日：2005-11-01

申请人： Masafumi Usuda ,  Yoshihiro Ishikawa ,  Seizo Onoe

发明人： Masafumi Usuda ,  Yoshihiro Ishikawa ,  Seizo Onoe

IPC分类号： H04B7/185

CPC分类号： H04W52/228 ,  H04B17/318 ,  H04B17/391 ,  H04W52/225 ,  H04W52/243

摘要： A CDMA apparatus including a propagation path variation estimator for estimating propagation path variations between respective prior transmit power control sections and a current transmit power control section to obtain propagation path variation estimation values, wherein each of the propagation path variation estimation values is obtained by estimating a propagation path variation between a different corresponding prior transmit power control section and the current transmit power control section; propagation path variation correction part for generating a plurality of corrected products, each corrected product obtained by multiplying at least one of vector, amplitude and/or power of a received signal of the different corresponding prior transmit power control section by said propagation path variation estimation value obtained by estimating the propagation path variation between the different corresponding prior transmit power control section and the current transmit power control section; and averaging part for averaging the plurality of corrected products.

摘要翻译： 一种CDMA装置，包括：传播路径变化估计器，用于估计各个现有发射功率控制部分和当前发射功率控制部分之间的传播路径变化，以获得传播路径变化估计值，其中每个传播路径变化估计值是通过估计 不同对应的先前发射功率控制部分与当前发射功率控制部分之间的传播路径变化; 用于产生多个校正乘积的传播路径变化校正部分，通过将不同对应的先前发送功率控制部分的接收信号的向量，幅度和/或功率中的至少一个乘以所述传播路径变化估计值而获得的每个校正乘积 通过估计不同对应的先前发射功率控制部分与当前发射功率控制部分之间的传播路径变化获得的; 以及对所述多个校正乘积进行平均的平均部分。

公开(公告)号：US20060062186A1

公开(公告)日：2006-03-23

申请号：US11264199

申请日：2005-11-01

申请人： Masafumi Usuda ,  Yoshihiro Ishikawa ,  Seizo Onoe

发明人： Masafumi Usuda ,  Yoshihiro Ishikawa ,  Seizo Onoe

IPC分类号： H04B7/216

CPC分类号： H04W52/228 ,  H04B17/318 ,  H04B17/391 ,  H04W52/225 ,  H04W52/243

摘要： A CDMA apparatus including a propagation path variation estimator for estimating propagation path variations between respective prior transmit power control sections and a current transmit power control section to obtain propagation path variation estimation values, wherein each of the propagation path variation estimation values is obtained by estimating a propagation path variation between a different corresponding prior transmit power control section and the current transmit power control section; propagation path variation correction part for generating a plurality of corrected products, each corrected product obtained by multiplying at least one of vector, amplitude and/or power of a received signal of the different corresponding prior transmit power control section by said propagation path variation estimation value obtained by estimating the propagation path variation between the different corresponding prior transmit power control section and the current transmit power control section; and averaging part for averaging the plurality of corrected products.

摘要翻译： 一种CDMA装置，包括：传播路径变化估计器，用于估计各个现有发射功率控制部分和当前发射功率控制部分之间的传播路径变化，以获得传播路径变化估计值，其中每个传播路径变化估计值是通过估计 不同对应的先前发射功率控制部分与当前发射功率控制部分之间的传播路径变化; 用于产生多个校正乘积的传播路径变化校正部分，通过将不同对应的先前发送功率控制部分的接收信号的向量，幅度和/或功率中的至少一个乘以所述传播路径变化估计值而获得的每个校正乘积 通过估计不同对应的先前发射功率控制部分与当前发射功率控制部分之间的传播路径变化获得的; 以及对所述多个校正乘积进行平均的平均部分。

公开(公告)号：US20050265433A1

公开(公告)日：2005-12-01

申请号：US11194217

申请日：2005-08-01

申请人： Yukihiko Okumura ,  Hidehiro Ando ,  Masafumi Usuda ,  Yoshihiro Ishikawa ,  Seizo Onoe

发明人： Yukihiko Okumura ,  Hidehiro Ando ,  Masafumi Usuda ,  Yoshihiro Ishikawa ,  Seizo Onoe

IPC分类号： H04J13/00 ,  H04B1/707 ,  H04B1/712 ,  H04B7/08 ,  H04B7/26 ,  H04L25/02 ,  H04L27/01 ,  H04W16/24 ,  H04W28/18

CPC分类号： H04L25/0234 ,  H04B1/707 ,  H04B1/7115 ,  H04B2201/70701 ,  H04L25/0228

摘要： In this invention, a channel estimation value of data symbols of a data channel is calculated by weighting and averaging pilot symbols in a parallel time multiplexing method. Also, a channel estimation value of data symbols during each data symbol interval is calculated by dividing data symbols in a slot into a plurality of data symbol intervals, selecting pilot symbols suitable for calculation of a channel estimation value of data symbols during each data symbol interval and weighting and averaging that pilot symbols. Also, a fading frequency is detected based on an inner product value of pilot symbols. Weighting factors are changed based on the detected fading frequency. Also, a channel estimation value is calculated by weighting and averaging pilot signals using a plurality of weighting sequences. The calculated channel estimation value is used to demodulate received data. The output data with the highest quality is selected by judging reliability of these plurality of demodulated data. It is also possible to select some weighting sequences based on the result of the reliability judgment of the demodulated data for predetermined period of time. In this case, after the selection, demodulation is performed by using these selected weighting sequences only.

摘要翻译： 在本发明中，通过并行时间复用方法对导频符号进行加权和平均来计算数据信道的数据符号的信道估计值。 此外，通过将时隙中的数据符号划分为多个数据符号间隔来计算每个数据符号间隔期间的数据符号的信道估计值，在每个数据符号间隔期间选择适合于计算数据符号的信道估计值的导频符号 并对该导频符号进行加权和平均。 此外，基于导频符号的内积值来检测衰落频率。 加权因子根据检测到的衰落频率而改变。 此外，通过使用多个加权序列对导频信号进行加权和平均来计算信道估计值。 所计算的信道估计值用于解调接收的数据。 通过判断这些多个解调数据的可靠性来选择具有最高质量的输出数据。 也可以基于解调数据的可靠性判断的结果来选择一些加权序列预定的时间段。 在这种情况下，在选择之后，仅通过使用这些选择的加权序列来执行解调。