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JP2014068121A5
JP2014068121A5 JP2012210879A JP2012210879A JP2014068121A5 JP 2014068121 A5 JP2014068121 A5 JP 2014068121A5 JP 2012210879 A JP2012210879 A JP 2012210879A JP 2012210879 A JP2012210879 A JP 2012210879A JP 2014068121 A5 JP2014068121 A5 JP 2014068121A5
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Japan
Prior art keywords
transmission symbol
data communication
transmission
length
symbol
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JP2012210879A
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Japanese (ja)
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JP2014068121A (en
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Priority to JP2012210879A priority Critical patent/JP2014068121A/en
Priority claimed from JP2012210879A external-priority patent/JP2014068121A/en
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Claims (6)

第１のデータ通信又は第２のデータ通信のための第１の送信シンボルを生成する第１の送信シンボル生成部と、
前記第１の送信シンボルにサイクリックプレフィックスを付加して第２の送信シンボルを生成するＣＰ挿入部と、
前記第２の送信シンボルを送信する送信部と、を備え、
前記第２のデータ通信のための第１の送信シンボルの長さは、前記第１のデータ通信のための第１の送信シンボルの長さよりも短く、
前記第２のデータ通信のための第１の送信シンボルに付加されるサイクリックプレフィックスの長さは、前記第１のデータ通信のための第１の送信シンボルに付加されるサイクリックプレフィックスの長さよりも短く、
前記第１のデータ通信のための第１の送信シンボルに付加するサイクリックプレフィックは該第１の送信シンボルの後方の一部のコピーであり、前記第２のデータ通信のための第１の送信シンボルに付加するサイクリックプレフィックスは既知の系列であり、
前記第１のデータ通信のための第１の送信シンボルはＯＦＤＭ変調を用いて生成され、前記第２のデータ通信のための第１の送信シンボルはシングルキャリア変調を用いて生成され、
前記第２のデータ通信に関する最大送信電力は、前記第１のデータ信号に関する最大送信電力よりも小さい通信装置。 A first transmission symbol generator for generating a first transmission symbol for the first data communication or the second data communication;
A CP insertion unit for generating a second transmission symbol by adding a cyclic prefix to the first transmission symbol;
A transmission unit for transmitting the second transmission symbol,
The length of the first transmission symbol for the second data communication is shorter than the length of the first transmission symbol for the first data communication,
The length of the cyclic prefix added to the first transmission symbol for the second data communication is greater than the length of the cyclic prefix added to the first transmission symbol for the first data communication. Short,
The cyclic prefix added to the first transmission symbol for the first data communication is a copy of a part of the rear of the first transmission symbol, and the first prefix for the second data communication The cyclic prefix added to the transmitted symbol is a known sequence,
A first transmission symbol for the first data communication is generated using OFDM modulation, a first transmission symbol for the second data communication is generated using single carrier modulation;
The communication device having a maximum transmission power related to the second data communication smaller than a maximum transmission power related to the first data signal. 第１の送信シンボル生成部は、前記第１のデータ通信のための第１の送信シンボルをデータ信号と既知の参照信号とを用いて生成し、前記第２のデータ通信のための第１の送信シンボルをデータ信号を用いて生成する請求項２に記載の通信装置。   The first transmission symbol generation unit generates a first transmission symbol for the first data communication using a data signal and a known reference signal, and a first transmission symbol for the second data communication The communication apparatus according to claim 2, wherein the transmission symbol is generated using a data signal. 前記第１のデータ通信のための又は前記第２のデータ通信のための第２の送信シンボルを用いた通信の要求を受信する受信部と、を備え、
前記送信部は、前記要求に対して、第２の送信シンボルが前記第１のデータ通信のため又は前記第２のデータ通信のためか、を示す通信端末情報報告を送信し、
前記送信部は、前記端末情報報告に応じて、前記第１のデータ通信のための又は前記第２のデータ通信のための第２の送信シンボルを送信する請求項１又は請求項２に記載の通信装置。 Receiving a communication request using a second transmission symbol for the first data communication or for the second data communication, and
In response to the request, the transmitter transmits a communication terminal information report indicating whether a second transmission symbol is for the first data communication or the second data communication,
The transmission unit according to claim 1 or 2, wherein the transmission unit transmits a second transmission symbol for the first data communication or the second data communication in accordance with the terminal information report. Communication device. 前記第１のデータ通信のための又は前記第２のデータ通信のための第２の送信シンボルを受信する受信部と、を備え、
前記受信した第２の送信シンボルを構成する第１の送信シンボルに前記参照信号が含まる場合、前記送信部は、第１のデータ通信のための第２の送信シンボルを送信する請求項２に記載の通信装置。 Receiving a second transmission symbol for the first data communication or for the second data communication, and
The transmission unit transmits a second transmission symbol for the first data communication when the reference signal is included in a first transmission symbol constituting the received second transmission symbol. The communication device described. 第１のデータ通信又は第２のデータ通信のための第１の送信シンボルを生成する第１の送信シンボル生成部と、
前記第１の送信シンボルにサイクリックプレフィックスを付加して第２の送信シンボルを生成するＣＰ挿入部と、
前記第２の送信シンボルを送信する送信部と、を備え、
前記第２のデータ通信のための第１の送信シンボルの長さは、前記第１のデータ通信のための第１の送信シンボルの長さよりも短く、
前記第２のデータ通信のための第１の送信シンボルに付加されるサイクリックプレフィックスの長さは、前記第１のデータ通信のための第１の送信シンボルに付加されるサイクリックプレフィックスの長さよりも短く、
前記第１の送信シンボルに付加するサイクリックプレフィックは該第１の送信シンボルの後方の一部のコピー であり、
前記第１のデータ通信のための第２の送信シンボルにおける第１の送信シンボルの長さとサイクリックリックプレフィックス長さの比は、前記第２のデータ通信のための第２の送信シンボルにおける第１の送信シンボルの長さとサイクリックリックプレフィックス長さの比は等しく、
前記第２のデータ通信に関する最大送信電力は、前記第１のデータ信号に関する最大送信電力よりも小さい 通信装置。 A first transmission symbol generator for generating a first transmission symbol for the first data communication or the second data communication;
A CP insertion unit for generating a second transmission symbol by adding a cyclic prefix to the first transmission symbol;
A transmission unit for transmitting the second transmission symbol,
The length of the first transmission symbol for the second data communication is shorter than the length of the first transmission symbol for the first data communication,
The length of the cyclic prefix added to the first transmission symbol for the second data communication is greater than the length of the cyclic prefix added to the first transmission symbol for the first data communication. Short,
The cyclic prefix added to the first transmission symbol is a copy of a part of the rear of the first transmission symbol;
The ratio of the length of the first transmission symbol in the second transmission symbol for the first data communication and the cyclic lick prefix length is the first ratio in the second transmission symbol for the second data communication. The ratio of the transmitted symbol length to the cyclic lick prefix length is equal,
The maximum transmission power related to the second data communication is smaller than the maximum transmission power related to the first data signal. 第１のデータ通信又は第２のデータ通信のための第１の送信シンボルを生成する第１の送信シンボル生成過程と、
前記第１の送信シンボルにサイクリックプレフィックスを付加して第２の送信シンボルを生成するＣＰ挿入過程と、
前記第２の送信シンボルを送信する送信過程と、を備え、
前記第２のデータ通信のための第１の送信シンボルの長さは、前記第１のデータ通信のための第１の送信シンボルの長さよりも短く、
前記第２のデータ通信のための第１の送信シンボルに付加されるサイクリックプレフィックスの長さは、前記第１のデータ通信のための第１の送信シンボルに付加されるサイクリックプレフィックスの長さよりも短く、
前記第１のデータ通信のための第１の送信シンボルに付加するサイクリックプレフィックは該第１の送信シンボルの後方の一部のコピーであり、前記第２のデータ通信のための第１の送信シンボルに付加するサイクリックプレフィックスは既知の系列であり、
前記第１のデータ通信のための第１の送信シンボルはＯＦＤＭ変調を用いて生成され、前記第２のデータ通信のための第１の送信シンボルはシングルキャリア変調を用いて生成され、
前記第２のデータ通信に関する最大送信電力は、前記第１のデータ信号に関する最大送信電力よりも小さい通信方法。 A first transmission symbol generation process for generating a first transmission symbol for the first data communication or the second data communication;
A CP insertion step of generating a second transmission symbol by adding a cyclic prefix to the first transmission symbol;
Transmitting a second transmission symbol; and
The length of the first transmission symbol for the second data communication is shorter than the length of the first transmission symbol for the first data communication,
The length of the cyclic prefix added to the first transmission symbol for the second data communication is greater than the length of the cyclic prefix added to the first transmission symbol for the first data communication. Short,
The cyclic prefix added to the first transmission symbol for the first data communication is a copy of a part of the rear of the first transmission symbol, and the first prefix for the second data communication The cyclic prefix added to the transmitted symbol is a known sequence,
A first transmission symbol for the first data communication is generated using OFDM modulation, a first transmission symbol for the second data communication is generated using single carrier modulation;
The maximum transmission power related to the second data communication is a communication method smaller than the maximum transmission power related to the first data signal.
JP2012210879A 2012-09-25 2012-09-25 Communication system and communication method Pending JP2014068121A (en)

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JP2014068121A5 true JP2014068121A5 (en) 2015-11-05

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US10555331B2 (en) * 2014-12-09 2020-02-04 Qualcomm Incorporated Nested system operation

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JP3541674B2 (en) * 1998-04-24 2004-07-14 日本ビクター株式会社 Multicarrier signal generation method and transmission device
JP4280233B2 (en) * 2004-12-24 2009-06-17 株式会社東芝 Wireless communication system, wireless communication device, and method for changing guard interval length of wireless communication device
US8077595B2 (en) * 2006-02-21 2011-12-13 Qualcomm Incorporated Flexible time-frequency multiplexing structure for wireless communication
US8223743B2 (en) * 2008-08-28 2012-07-17 Ntt Docomo, Inc. Methods for over-the-air blind synchronization of two OFDMA-based networks that minimizes interference and by using an extended correlation window length
WO2012042627A1 (en) * 2010-09-30 2012-04-05 富士通株式会社 Wireless communication device, wireless communication system, and wireless communication method

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