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公开(公告)号：EP2146468B1
公开(公告)日：2011-01-05
申请号：EP09013624.3
申请日：2000-03-31
申请人： NTT DOCOMO, INC.
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.
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公开(公告)号：EP2136593A2
公开(公告)日：2009-12-23
申请号：EP09007977.3
申请日：2009-06-18
申请人： NTT DoCoMo, Inc.
发明人： Nagato, Rie , Ishikawa, Yoshihiro
IPC分类号： H04W52/24
CPC分类号： H04W52/143 , H04W52/244 , H04W52/325 , H04W52/34
摘要： A femto base station according to the present invention includes: a downlink perch channel signal transmission power controller unit configured to change a transmission power of a downlink perch channel signal when a first condition is satisfied; and an uplink reception sensitivity controller unit configured to change an uplink reception sensitivity when a second condition is satisfied after the first condition is satisfied.
摘要翻译： 根据本发明的毫微微基站包括：下行链路信道信号发送功率控制单元，被配置为当满足第一条件时，改变下行链路导频信道信号的发送功率; 以及上行接收灵敏度控制部，其在满足第一条件之后满足第二条件时，改变上行链路接收灵敏度。
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53.发明公开Channel estimation device and method, demodulation device and method and fading frequency decision device and method 审中-公开装置和方法，用于信道估计，解调装置和方法以及装置和方法的衰落频率判定
公开(公告)号：EP1983654A1
公开(公告)日：2008-10-22
申请号：EP08012952.1
申请日：2000-03-31
申请人： NTT DoCoMo, Inc.
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，数据信道的数据符号的信道估计值是通过在并行时分多路复用方法加权平均的导频符号计算。 这样，每个数据符号间隔期间的数据码元的信道估计值是由每个数据符号区间的划分数据符号在一个时隙到数据符号区间的复数，选择适合于数据符号的信道估计值的计算的导频符号计算 和加权平均的导频符号一样。 因此，一个衰落频率中检测到的导频符号的内积值基础上的。 加权因子是基于所检测到的衰落频率改变。 因此，一个信道估计值进行加权，并使用加权序列相连的多个平均的导频信号计算。 所计算的信道估计值用于解调接收的数据。 具有最高质量的输出数据通过判断解调数据的论文多个可靠性地选择。 因此，它是可以选择基于针对预定时间段的解调数据的可靠性判定结果一些加权序列。 在这种情况下，选择后，解调进行通过仅使用这些选择的加权序列。
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54.发明公开Measuring apparatus and area quality measuring method 有权Messvorrichtung und MessverfahrenfürdieBereichsqualität
公开(公告)号：EP1843612A2
公开(公告)日：2007-10-10
申请号：EP07007353.1
申请日：2007-04-10
申请人： NTT DoCoMo, Inc.
发明人： Nagato, Rie , Ishikawa, Yoshihiro
IPC分类号： H04Q7/36
CPC分类号： H04W24/08 , H04B17/309 , H04B17/336
摘要： A measuring apparatus (20) for measuring service quality in an area in a communication system, in which a plurality of base stations (10a-10e) use one frequency band for transmitting downlink signals, includes: a receiver configured to receive constant power signals that are the downlink signals transmitted by the base stations through constant power channels in which transmission powers are constant; a reception power measuring unit (22) configured to measure reception powers of the constant power signals transmitted by the respective base stations; a reception power selector (23) configured to select a reception power which is a base for measurement of the quality in the area, out of the reception powers measured by the reception power measuring unit; and an area quality measuring unit configured to measure the quality in the area on the basis of the reception power selected by the reception power selector, and a total of the reception powers not selected by the reception power selector.
摘要翻译： 一种用于测量通信系统中的多个基站（10a-10e）使用一个频带来发送下行链路信号的通信系统中的服务质量的测量装置（20），包括：接收机，被配置为接收恒定功率信号， 是基站通过其中发射功率恒定的恒定功率信道发射的下行链路信号; 接收功率测量单元（22），被配置为测量由各个基站发送的恒定功率信号的接收功率; 接收功率选择器（23），被配置为在由接收功率测量单元测量的接收功率中选择作为测量该区域中的质量的基础的接收功率; 以及区域质量测量单元，被配置为基于由接收功率选择器选择的接收功率来测量该区域中的质量，以及未由接收功率选择器选择的接收功率的总和。
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55.发明公开Channel estimation device and method, demodulation device and method, and fading frequency decision device and method 有权Vorrichtung und Verfahren zur Fadingfrequenzentscheidung
公开(公告)号：EP1816753A1
公开(公告)日：2007-08-08
申请号：EP07075319.9
申请日：2000-03-31
申请人： NTT DoCoMo, Inc.
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。 还可以基于经解调的数据的可靠性判断的结果在预定的时间段内选择一些加权序列。 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。
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56.发明授权
公开(公告)号：EP1229755B1
公开(公告)日：2006-10-04
申请号：EP02250670.3
申请日：2002-01-31
申请人： NTT DoCoMo, Inc.
发明人： Hayashi, Takahiro , Ishikawa, Yoshihiro , Onoe, Seizo , Nakamura, Takehiro , Iwamura, Mikio , Ofuji, Yoshiaki
IPC分类号： H04Q7/38
CPC分类号： H04W52/343 , H04W72/082 , H04W88/12
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57.发明授权Cell search control method, mobile station and mobile communications system 有权该方法中，移动台和通信系统，用于控制小区搜索
公开(公告)号：EP1069794B1
公开(公告)日：2006-09-06
申请号：EP00305842.7
申请日：2000-07-11
申请人： NTT DoCoMo, Inc.
摘要： A cell search control method, a mobile station and a mobile communications system can save consumption power with maintaining high accuracy for selecting a base station. The mobile station measures receiving quality (highest received power and the like) of a currently captured perch channel of a base station; automatically makes a decision as to whether the mobile station is located at a cell periphery in which the need for searching for a new perch channel is great, or located in neighborhood of a base station in which the need is little; and increases the frequency of the search at a location where the need is great and decreases it at a location where the need is little.
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58.发明授权Method and apparatus for call admission control in CDMA mobile communication system 失效在一个码分多址移动通信系统的方法和装置Rufzulassungskontrolle
公开(公告)号：EP0750440B1
公开(公告)日：2005-12-07
申请号：EP96110055.9
申请日：1996-06-21
申请人： NTT DoCoMo INC.
发明人： Ishikawa, Yoshihiro , Umeda, Narumi
CPC分类号： H04W72/00
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59.发明授权CALL ADMISSION CONTROL METHOD AND MOBILE STATION DEVICE FOR CDMA MOBILE COMMUNICATION SYSTEM. 失效呼叫接受控制方法CDMA移动系统及移动站
公开(公告)号：EP1320276B1
公开(公告)日：2004-11-10
申请号：EP03002685.0
申请日：1997-12-25
申请人： NTT DoCoMo, Inc.
IPC分类号： H04Q7/38
CPC分类号： H04W72/082 , H04W72/042 , H04W72/085
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60.发明公开
公开(公告)号：EP1239602A2
公开(公告)日：2002-09-11
申请号：EP02250327.0
申请日：2002-01-17
申请人： NTT DoCoMo, Inc.
发明人： Hayashi, Takahiro , Ishikawa, Yoshihiro , Onoe, Seizo , Nakamura, Takehiro , Iwamura, Mikio , Ofuji, Yoshiaki
CPC分类号： H04W52/12 , H04W52/24 , H04W52/281 , H04W52/346 , H04W52/52
摘要： A transmission power control apparatus for a wireless communication apparatus which reduces a power value of a signal input to a power amplifier to the maximum allowable input power value of the power amplifier or below is provided in which the transmission power control apparatus includes: a part for setting a transmission power upper limit value of a call according to a circuit type of the call; and a part for reducing transmission power for the call to the transmission power upper limit value or below.
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