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    • 91. 发明授权
    • Radio communication method and base station
    • 无线电通信方式和基站
    • US07120467B2
    • 2006-10-10
    • US10778355
    • 2004-02-17
    • Anil UmeshKoichi OkawaShinya TanakaTakehiro Nakamura
    • Anil UmeshKoichi OkawaShinya TanakaTakehiro Nakamura
    • H04M1/00
    • H04W72/0466H04W24/00H04W88/08
    • A base station is configured to transmit a downlink signal to a mobile station located in a sector managed by the base station. The downlink signal is spread using a scrambling code. The base station has a monitor configured to monitor a change of a reception condition of an uplink common channel of the mobile station in the sector, a DOA estimator configured to estimate a direction of arrival of an uplink signal transmitted from the mobile station, in response to the change, an area border setter configured to separate the sector into a plurality of areas, by setting an area border in the sector in accordance with the estimated direction, a scrambling code assigner configured to assign a different scrambling code to each of the separated areas and a spreader configured to spread the downlink signal using the assigned scrambling code in each of the separated areas.
    • 基站被配置为向位于由基站管理的扇区中的移动台发送下行链路信号。 使用扰码扩展下行链路信号。 基站具有:监视器,用于监视扇区中的移动站的上行链路公共信道的接收状况的变化; DOA估计器,被配置为估计从移动台发送的上行链路信号的到达方向,作为响应 所述区域边界设置器被配置为通过根据所述估计方向设置所述扇区中的区域边界来将所述扇区分离成多个区域;扰码分配器,被配置为向所分割的每个区域分配不同的扰码 区域和扩展器,其被配置为使用分配的扰码在每个分离区域中扩展下行链路信号。
    • 95. 发明授权
    • Cell search method and apparatus for mobile station in mobile communication system
    • 移动通信系统中移动台的小区搜索方法和装置
    • US06961565B2
    • 2005-11-01
    • US09954956
    • 2001-09-18
    • Motohiro TannoTakehiro Nakamura
    • Motohiro TannoTakehiro Nakamura
    • H04B1/707H04B1/7083H04W36/00H04W36/36H04Q7/20
    • H04B1/7075H04B1/70735H04B1/7083H04B1/709
    • The present invention reduces the time required for cell search and increase the accuracy of the cell search by determining, during selection of frame boundaries and a scramble code, whether or not the selection results are correct. A mobile station causes descramblers to descramble a received signal with eight scramble codes. Then, correlators calculate the phases of the scramble codes on the basis of frame boundaries, and despreads the signal with a spreading code for a CPICH. The mobile station performs this operation over a plurality of symbols, and causes averaging process sections to average the results. Then, a peak detector selects a scramble code with which an average correlation coefficient is largest. This maximum average correlation coefficient is output to a detection results judging section, which then calculates the ratio of this value to a reference value calculated inside the mobile station, thereby judging detection results.
    • 本发明通过在选择帧边界和扰码期间确定选择结果是否正确来减少小区搜索所需的时间并增加小区搜索的准确性。 移动站使得解扰器用八个扰码解扰接收到的信号。 然后,相关器基于帧边界计算扰码的相位,并用CPICH的扩展码解扩信号。 移动台通过多个符号执行该操作,并使得平均处理部分对结果进行平均。 然后,峰值检测器选择平均相关系数最大的扰码。 该最大平均相关系数被输出到检测结果判定部,检测结果判定部根据该检测结果判定部计算该值与移动台内计算出的基准值的比例,判断检测结果。
    • 100. 发明授权
    • Scheme for wire line data transmission in mobile communication system
    • 移动通信系统中有线数据传输方案
    • US6122265A
    • 2000-09-19
    • US818683
    • 1997-03-14
    • Takehiro NakamuraKatsuhiko Yamagata
    • Takehiro NakamuraKatsuhiko Yamagata
    • H04B7/26H04B7/005H04W36/18H04W52/40H04W76/04H04W88/02H04J13/00H04Q7/00
    • H04W36/18H04W52/40H04W76/04H04W88/02
    • A wire line data transmission scheme in a mobile communication system for reducing the wire line transmission const. Radio state qualities of a plurality of radio channels between the plurality of base stations and the mobile station are measured, and a validity and a redundancy in composition of each radio channel is judged according to the corresponding measured radio state quality. Then, a transmission in the wire line transmission paths is controlled by stopping a transmission of transmission signals for those radio channels which are judged as invalid or redundant according to the obtained judgement result. All of measuring, judging, and controlling can be carried out by each base station, or by the mobile station. Also, measuring and judging can be carried out by the mobile station while controlling is carried out by each base station, or measuring can be carried out by the mobile station while judging and controlling can be carried out by each base station.
    • 一种用于减少有线线路传输的移动通信系统中的有线线路数据传输方案。 测量多个基站和移动台之间的多个无线电信道的无线电状态质量,根据相应的测量的无线电状态质量来判断每个无线电信道的有效性和冗余度。 然后,通过根据所获得的判断结果停止对被判断为无效或冗余的那些无线电信道的发送信号的发送来控制有线线路传输路径中的发送。 所有测量,判断和控制都可以由每个基站或移动台进行。 此外,由各个基站进行控制的同时,能够由移动台进行测量和判断,或者可以由移动台进行测量,同时可以由各个基站进行判断和控制。