公开(公告)号：EP2058972A1

公开(公告)日：2009-05-13

申请号：EP09002936.4

申请日：2004-12-24

申请人： NTT DoCoMo, Inc.

发明人： Maeda, Noriyuki ,  Atarashi, Hiroyuki ,  Sawahashi, Mamoru

IPC分类号： H04L5/02

CPC分类号： H04L1/0001 ,  H04B1/692 ,  H04L1/0025 ,  H04L1/0071 ,  H04L5/0016 ,  H04L5/006 ,  H04L25/0216 ,  H04L25/0222 ,  H04L27/0008 ,  H04L27/2602

摘要： A radio communication OFCDM system having a radio transmitter (100) and a radio receiver (600) and adopting multiple carrier modulation and code spreading modulation methods, comprising: a selecting unit (104) provided in the radio transmitter or the radio receiver, for selecting an interleaving mode out of a plurality of interleaving modes depending on radio propagation path conditions comprising maximum Doppler frequency shift and delay spread characteristics; a symbol configuration unit (106-1) provided in the radio transmitter; and a symbol reconfiguration unit (606) provided in the radio receiver; whereby the symbol configuration unit is arranged to configure information symbols to be transmitted by the radio transmitter in both time and frequency directions in a pattern according to the interleaving mode selected by the selecting unit, the symbol reconfiguration unit is arranged to reconfigure information symbols received by the radio receiver in both time and frequency directions in an inverse pattern of the pattern, and based on maximum Doppler frequency shift characteristics in the radio propagation paths, the selecting unit is arranged to select a bit interleaving mode or a symbol interleaving mode (712) when the maximum Doppler frequency is larger than a predetermined value, and a chip interleaving mode (708) when the maximum Doppler frequency is smaller than the predetermined value, and based on delay spread characteristics in the radio propagation paths, the selecting unit is arranged to select a bit interleaving mode or a symbol interleaving mode (722) when the delay spread is larger than a predetermined value, and a chip interleaving mode (718) when the delay spread is smaller than the predetermined value.

摘要翻译： 一种具有无线电发射机（100）和无线电接收机（600）并采用多载波调制和码扩展调制方法的无线电通信OFCDM系统，包括：设置在无线电发射机或无线电接收机中的选择单元（104），用于选择 取决于包括最大多普勒频移和延迟扩展特性的无线电传播路径条件的多个交织模式中的交织模式; 设置在无线发射机中的符号配置单元（106-1） 以及设置在所述无线电接收机中的符号重新配置单元（606） 由此符号配置单元被配置为根据由选择单元选择的交织模式，以模式配置无线电发射机在时间和频率方向上发送的信息符号，所述符号重配置单元被配置为重新配置由 所述无线电接收机在所述模式的逆模式中的时间和频率方向上，并且基于所述无线电传播路径中的最大多普勒频移特性，所述选择单元被布置为选择比特交织模式或符号交织模式（712） 当最大多普勒频率大于预定值时，以及当最大多普勒频率小于预定值时的码片交织模式（708），并且基于无线电传播路径中的延迟扩展特性，选择单元被布置为 当延迟时间（sp）为0时，选择比特交织模式或符号交织模式（722） 读取大于预定值，以及当延迟扩展小于预定值时的码片交织模式（718）。

公开(公告)号：EP2017967A1

公开(公告)日：2009-01-21

申请号：EP08018840.2

申请日：2005-03-04

申请人： NTT DoCoMo, Inc.

发明人： Yoshikazu, Goto ,  Atarashi, Hiroyuki ,  Sawahashi, Mamoru

IPC分类号： H04B1/707

CPC分类号： H04B1/707 ,  H04B1/692 ,  H04B2201/70706 ,  H04B2201/709709

摘要： A base station suitable for radio communications with a DS-CDMA mobile station,
said mobile station comprising:
a spreading code generating unit configured to generate a spreading code based on a spreading factor;
a chip repetition unit configured to repeat a chip sequence after spread spectrum for a number of times; and
a phase sequence generating unit configured to generate at least one phase unique to the mobile station, the phase being multiplied by the repeated chip sequences output by the chip repetition unit;

said base station being characterized by:
a control information determining unit configured
to determine control information that includes a spreading factor, the number of chip repetitions, and a phase unique to the mobile station, based on information about a type of traffic; and
to transmit the spreading factor, the number of chip repetitions, and the unique phase of the mobile station that are determined, to the mobile station.

摘要翻译： 一种适用于与DS-CDMA移动台无线电通信的基站，所述移动台包括：扩展码生成单元，用于根据扩频因子生成扩展码; 芯片重复单元，被配置为在扩频之后重复码片序列多次; 以及相位序列生成单元，被配置为生成所述移动站唯一的至少一个相位，所述相位乘以由所述码片重复单元输出的重复码片序列; 所述基站的特征在于：控制信息确定单元，被配置为基于关于业务类型的信息来确定包括扩频因子，码片重复次数和移动台唯一的相位的控制信息; 并且向移动台发送确定的扩展因子，码片重复次数和移动站的唯一相位。

公开(公告)号：EP1956746A1

公开(公告)日：2008-08-13

申请号：EP08008068.2

申请日：2001-11-06

申请人： NTT DoCoMo, Inc.

发明人： Hanada, Yukiko ,  Higuchi, Kenichi ,  Sawahashi, Mamoru

IPC分类号： H04L5/02 ,  H04L27/26

CPC分类号： H04L27/2602 ,  H04L5/026 ,  H04L27/2665 ,  H04L27/2675

摘要： A reception step receives a multicarrier signal containing subcarriers, at least one of which a synchronization signal is transmitted therein, multiplied only by a synchronization signal spreading code, a correlation detection step detects correlation values between the received multicarrier signal and replicas of the synchronization signal, and a timing detection step detects a FFT timing and a long code received timing according to the correlation values.

摘要翻译： 接收步骤接收到包含副载波的多载波信号，其中至少一个同步信号在其中传输，仅由同步信号扩展码相乘，相关检测步骤检测所接收的多载波信号和同步信号的副本之间的相关值， 定时检测步骤根据相关值检测FFT定时和长码接收定时。

公开(公告)号：EP1956745A1

公开(公告)日：2008-08-13

申请号：EP08008067.4

申请日：2001-11-06

申请人： NTT DoCoMo, Inc.

发明人： Hanada, Yukiko ,  Higuchi, Kenichi ,  Sawahashi, Mamoru

IPC分类号： H04L5/02 ,  H04L27/26

CPC分类号： H04L27/2602 ,  H04L5/026 ,  H04L27/2665 ,  H04L27/2675

摘要： A reception step receives a multicarrier signal containing subcarriers, at least one of which a synchronization signal is transmitted therein, multiplied only by a synchronization signal spreading code, a correlation detection step detects correlation values between the received multicarrier signal and replicas of the synchronization signal, and a timing detection step detects a FFT timing and a long code received timing according to the correlation values.

摘要翻译： 接收步骤接收到包含副载波的多载波信号，其中至少一个同步信号在其中传输，仅由同步信号扩展码相乘，相关检测步骤检测所接收的多载波信号和同步信号的副本之间的相关值， 定时检测步骤根据相关值检测FFT定时和长码接收定时。

公开(公告)号：EP1337069A3

公开(公告)日：2006-02-08

申请号：EP03003452.4

申请日：2003-02-14

申请人： NTT DoCoMo, Inc.

发明人： Tanno, Motohiro ,  Atarashi, Hiroyuki ,  Sawahashi, Mamoru

IPC分类号： H04L5/02 ,  H04L27/26

CPC分类号： H04L27/2656 ,  H04L27/261 ,  H04L27/2675

摘要： A mobile communication system (1) according to the present invention comprises base station (30) and mobile station (10). The base station (30) sends a pilot symbol sequence known to the mobile station (10), to the mobile station (10), using a plurality of carriers for downward channels, and performs communication with the mobile station (10) while multiplying the channels by scrambling codes. The mobile station (10) is provided with a peak detector (17) for calculating cross correlation allowing for a phase difference of the scrambling codes between pilot symbol sequences received from the base station (30), thereby detecting a radio frame boundary.

摘要翻译： 根据本发明的移动通信系统（1）包括基站（30）和移动台（10）。 基站（30）使用用于下行信道的多个载波向移动台（10）发送移动台（10）已知的导频符号序列，并且与移动台（10）进行通信，同时将 通过扰码的信道。 移动台（10）具有峰值检测器（17），用于计算允许从基站（30）接收到的导频符号序列之间的扰码的相位差的互相关，由此检测无线电帧边界。

公开(公告)号：EP1317077B1

公开(公告)日：2005-11-09

申请号：EP03075508.6

申请日：1997-05-30

申请人： NTT DoCoMo, Inc.

发明人： Okawa, Koichi NTT DoCoMo, Inc. ,  Ohno, Koji ,  Sawahashi, Mamoru ,  Uebayashi, Shinji ,  Okumura, Yukihiko

IPC分类号： H04J13/04 ,  H04B1/707

CPC分类号： H04J13/00 ,  H04B7/2637 ,  H04B2201/70701 ,  H04J13/0077

公开(公告)号：EP1229668A3

公开(公告)日：2005-03-23

申请号：EP02250647.1

申请日：2002-01-30

申请人： NTT DoCoMo, Inc.

发明人： Higuchi, Kenichi ,  Sawahashi, Mamoru

IPC分类号： H04B1/707

CPC分类号： H04B1/7107

摘要： A receiving process method of a receiving apparatus used in a mobile communication system is provided in which a sending apparatus sends a plurality of code channels as code channel groups to which spreading codes are assigned to a receiving apparatus, and the receiving apparatus receives the code channels, the receiving process method comprising the steps of: when spreading codes used for the code channel groups are orthogonal code sequences, generating received spreading signal sequences of the code channel groups according to the number of received paths; and removing received spreading signal sequences of a received path of own code channel group of the receiving apparatus which should be removed from received signals.

公开(公告)号：EP1335621A1

公开(公告)日：2003-08-13

申请号：EP03002137.2

申请日：2003-01-31

申请人： NTT DoCoMo, Inc.

发明人： Ofuji, Yoshiaki ,  Abeta, Sadayuki ,  Sawahashi, Mamoru

IPC分类号： H04Q7/38

CPC分类号： H04W72/10 ,  H04W72/08 ,  H04W88/08

摘要： A base station includes an acquisition unit (5) for acquiring a packet transmitted from a terminal device to a mobile station, a priority calculation unit (43) for calculating priority of transmission of the packet acquired by the acquisition unit to the mobile station, a weight processing unit (44) for conducting weighting on the priority of the packet calculated by the priority calculation unit, a channel control unit for assigning a channel for transmission of the packet to the mobile station, to the packet based on the priority of the packet weighted by the weight processing unit (44), and a transmission unit for transmitting the packet to the mobile station on the channel assigned by the channel control unit.

公开(公告)号：EP1075089B1

公开(公告)日：2003-01-02

申请号：EP00202794.4

申请日：1994-10-13

申请人： NTT DoCoMo, Inc.

发明人： Dohi, Tomohiro ,  Sawahashi, Mamoru ,  Adachi, Fumiyuki

IPC分类号： H04B1/707

CPC分类号： H04B1/7085 ,  H04B7/2125

公开(公告)号：EP1204234A2

公开(公告)日：2002-05-08

申请号：EP01125485.1

申请日：2001-11-06

申请人： NTT DoCoMo, Inc.

发明人： Hanada, Yukiko ,  Higuchi, Kenichi ,  Sawahashi, Mamoru

IPC分类号： H04L5/02 ,  H04L27/26

CPC分类号： H04L27/2602 ,  H04L5/026 ,  H04L27/2665 ,  H04L27/2675

摘要： A reception step receives a multicarrier signal containing subcarriers, at least one of which a synchronization signal is transmitted therein, multiplied only by a synchronization signal spreading code, a correlation detection step detects correlation values between the received multicarrier signal and replicas of the synchronization signal, and a timing detection step detects a FFT timing and a long code received timing according to the correlation values.

摘要翻译： 接收步骤在其中发送了同步信号中的至少一个上接收到乘以同步信号扩展码的副载波的多载波信号。 相关检测步骤检测所接收的多载波信号和同步信号的副本之间的相关值，并且定时检测步骤根据相关值检测FFT定时和长码定时。