公开(公告)号：EP2773150B1

公开(公告)日：2018-07-04

申请号：EP12843981.7

申请日：2012-10-16

申请人： NTT DOCOMO, INC.

发明人： SOMEYA, Takao ,  HASEGAWA, Fumiki ,  YAMADA, Takefumi ,  ZUKAWA, Hiroki ,  FUKE, Yutaka ,  KAWAHARA, Toshirou

IPC分类号： H04W48/02 ,  H04W48/18 ,  H04W88/10 ,  H04W84/04 ,  H04W16/16

CPC分类号： H04W24/04 ,  H04W84/045 ,  H04W88/10

摘要： A base station has a first wireless communication unit that communicates with mobile stations for offering a first radio communication service to the mobile stations, and a second wireless communication unit that communicates with mobile stations for offering a second radio communication service that is different from the first radio communication service to the mobile stations. At the base station, a communication service continuation restrictor is provided that restricts operation of the base station as to whether or not, when it is detected that either one of the first or the second radio communication service is not executable, another radio communication service should be continued. Whether or not the other communication service should be continued can be set at the communication service continuation restrictor.

公开(公告)号：EP2166683B1

公开(公告)日：2015-08-12

申请号：EP08765020.6

申请日：2008-06-03

申请人： NTT DOCOMO, INC.

发明人： MATSUOKA, Hosei ,  YOSHIMURA, Takeshi ,  KAWAHARA, Toshirou

IPC分类号： H04L27/26 ,  H04B1/707 ,  H04J11/00 ,  H04B11/00 ,  H04L7/00

CPC分类号： H04B1/707 ,  H04B11/00 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2607 ,  H04L27/2626 ,  H04L27/2662 ,  H04L27/2675

摘要： An object is to provide a modulation device, a demodulation device, and a transmission system and acoustic signal transmission method using them which can carry out a synchronization process for data signals without using a carrier frequency for a synchronization signal. A modulation device 3 transmits an acoustic signal superposed with a PN sequence set according to a carrier frequency and a data signal. A demodulation device 9 receives the acoustic signal, determines the PN sequence having the highest maximum correlation value with the acoustic signal in a plurality of PN sequences, detects a symbol synchronization point according to the correlation value between thus determined PN sequence and the acoustic signal, and performs a synchronization process. Thereafter, according to the detected synchronization point and determined PN sequence, an OFDM demodulation processing unit 38 decides the carrier frequency band of the data signal superposed on the acoustic signal and demodulates the data signal.

公开(公告)号：EP2773150A1

公开(公告)日：2014-09-03

申请号：EP12843981.7

申请日：2012-10-16

申请人： NTT DOCOMO, INC.

发明人： SOMEYA, Takao ,  HASEGAWA, Fumiki ,  YAMADA, Takefumi ,  ZUKAWA, Hiroki ,  FUKE, Yutaka ,  KAWAHARA, Toshirou

IPC分类号： H04W48/02 ,  H04W48/18 ,  H04W88/10

CPC分类号： H04W24/04 ,  H04W84/045 ,  H04W88/10

摘要： A base station has a first wireless communication unit that communicates with mobile stations for offering a first radio communication service to the mobile stations, and a second wireless communication unit that communicates with mobile stations for offering a second radio communication service that is different from the first radio communication service to the mobile stations. At the base station, a communication service continuation restrictor is provided that restricts operation of the base station as to whether or not, when it is detected that either one of the first or the second radio communication service is not executable, another radio communication service should be continued. Whether or not the other communication service should be continued can be set at the communication service continuation restrictor.

公开(公告)号：EP2166683A1

公开(公告)日：2010-03-24

申请号：EP08765020.6

申请日：2008-06-03

申请人： NTT DoCoMo, Inc.

发明人： MATSUOKA, Hosei ,  YOSHIMURA, Takeshi ,  KAWAHARA, Toshirou

IPC分类号： H04J11/00 ,  H04B1/707 ,  H04B11/00 ,  H04L7/00

CPC分类号： H04B1/707 ,  H04B11/00 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2607 ,  H04L27/2626 ,  H04L27/2662 ,  H04L27/2675

摘要： An object is to provide a modulation device, a demodulation device, and a transmission system and acoustic signal transmission method using them which can carry out a synchronization process for data signals without using a carrier frequency for a synchronization signal.
A modulation device 3 transmits an acoustic signal superposed with a PN sequence set according to a carrier frequency and a data signal. A demodulation device 9 receives the acoustic signal, determines the PN sequence having the highest maximum correlation value with the acoustic signal in a plurality of PN sequences, detects a symbol synchronization point according to the correlation value between thus determined PN sequence and the acoustic signal, and performs a synchronization process. Thereafter, according to the detected synchronization point and determined PN sequence, an OFDM demodulation processing unit 38 decides the carrier frequency band of the data signal superposed on the acoustic signal and demodulates the data signal.

摘要翻译： 本发明的目的是提供一种使用它们的调制装置，解调装置以及传输系统和声信号传输方法，它们可以对数据信号执行同步处理而不使用用于同步信号的载波频率。 调制装置3发送与根据载波频率和数据信号组合的PN序列叠加的声信号。 解调装置9接收声信号，确定与多个PN序列中的声信号具有最高最大相关值的PN序列，根据所确定的PN序列与声信号之间的相关值来检测符号同步点， 并执行同步处理。 此后，根据检测到的同步点和确定的PN序列，OFDM解调处理单元38确定叠加在声信号上的数据信号的载波频带并解调数据信号。