WO2014117622A1 - Procédés et appareils d'envoi et de réception de données - Google Patents

Procédés et appareils d'envoi et de réception de données Download PDF

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Publication number
WO2014117622A1
WO2014117622A1 PCT/CN2013/091113 CN2013091113W WO2014117622A1 WO 2014117622 A1 WO2014117622 A1 WO 2014117622A1 CN 2013091113 W CN2013091113 W CN 2013091113W WO 2014117622 A1 WO2014117622 A1 WO 2014117622A1
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WO
WIPO (PCT)
Prior art keywords
data
random sequence
data frame
length
unique
Prior art date
Application number
PCT/CN2013/091113
Other languages
English (en)
Chinese (zh)
Inventor
张昌明
肖振宇
刘颖
郁光辉
金德鹏
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2014117622A1 publication Critical patent/WO2014117622A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • H04L1/0083—Formatting with frames or packets; Protocol or part of protocol for error control

Definitions

  • the receiving end can know the length and content of the UW in the data frame by using blind detection.
  • a data transmitting apparatus is also provided, which is configured to implement the above-described embodiments and preferred embodiments, and has not been described again.
  • the term "unit” or “module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and conceivable.
  • 4 is a block diagram showing a preferred structure of a data transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 4, the method includes: a packaging unit 402 and a transmitting unit 404. The structure will be described below.
  • the encapsulating unit 402 is configured to encapsulate the data to be sent to obtain one or more data frames, where the data frame includes: DATA and UW arranged in phase, wherein the UW is composed of one or more repeated pseudo-random sequences;
  • Unit 404 coupled to encapsulation unit 402, is configured to transmit the one or more data frames.
  • the encapsulating unit 402 is further configured to determine, according to system requirements, whether a CP of a pseudo-random sequence needs to be added before one or more repeated pseudo-random sequences in the UW, wherein at most one CP is added to one UW. .
  • the data transmitting method and the data transmitting apparatus may be configured to transmit signals to the connected E-band communication physical layer.
  • the data sending method and device provided by the embodiments of the present invention are suitably configured as a connection-oriented transmission environment, and can implement fast capture and synchronization.
  • the methods and apparatus of the embodiments of the present invention for acquisition, frequency offset estimation, noise power estimation, channel estimation, and the like can be implemented in any UW, and the schemes provided in the background art can be implemented only in the header.
  • the data sending method and apparatus provided by the embodiments of the present invention facilitate step-by-step implementation of frequency offset extraction.
  • UW has the same pseudo-random sequence inside, and these same pseudo-random sequences are close, even at large Phase aliasing will not occur when the frequency is off, so the initial frequency offset can be extracted by comparison when the signal is received.
  • the UW of each BLK is exactly the same, and the two UWs are far apart, under the fine frequency offset. It is also possible to produce significant phase deviations. Therefore, after the initial frequency offset correction, the residual frequency offset can be extracted using the UW between the BLKs.
  • the data transmitting method and apparatus provided by the embodiments of the present invention can also facilitate the estimation of the noise power, and the simple noise power estimation also needs two identical sequences, and is compared in the received signal.
  • the number of segments of the random sequence (ie, the number of repetitions n) can be configured to different but uniform values, for example: the number of repetitions can be 2, 3, 4, etc., and the random sequence can also be PN, Golay, Zadoff-Chu, etc.
  • the length of the random sequence can also be configured according to the actual situation.
  • the length of the DATA part and the modulation method can also be configured as needed.
  • the parameters of the specific configuration can be configured according to the configuration in Table 1: Table 1
  • Preferred Embodiment 3 As shown in Fig. 7, in the preferred embodiment, three data frames are included, each of which contains T BLKs.
  • the UW of the first data frame is composed of two PN sequences plus CP
  • the UW of the second data frame is composed of three ZC sequences
  • the UW of the third data frame is composed of three Ga32 (Golay sequence) plus CP.
  • the parameters of the specific configuration can be configured according to the configuration in Table 3:

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

L'invention concerne des procédés et des appareils d'envoi et de réception de données. Le procédé d'envoi de données comprend les étapes suivantes : encapsuler des données à envoyer pour obtenir une ou plusieurs trames de données, les trames de données précédentes comprenant un bloc d'informations de données et un mot spécial, agencés d'une manière espacée et le mot spécial précédent étant formé par une ou plusieurs séquences pseudo-aléatoires répétées ; et envoyer la ou les plusieurs trames de données précédentes. Grâce à la présente invention, il est possible de résoudre le problème technique selon lequel un procédé d'envoi de données dans une technologie associée ne peut pas être utilisé dans un scénario de communication orienté connexion et d'obtenir des effets techniques de fonctions telles qu'une capture rapide, une synchronisation de support, une estimation de canal, une protection de données et un suivi de phase.
PCT/CN2013/091113 2013-01-31 2013-12-31 Procédés et appareils d'envoi et de réception de données WO2014117622A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310038408.3A CN103973398A (zh) 2013-01-31 2013-01-31 数据发送、数据接收方法和装置
CN201310038408.3 2013-01-31

Publications (1)

Publication Number Publication Date
WO2014117622A1 true WO2014117622A1 (fr) 2014-08-07

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CN (1) CN103973398A (fr)
WO (1) WO2014117622A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104125635A (zh) * 2014-08-13 2014-10-29 中国科学院上海微系统与信息技术研究所 一种适用于e波段无线传输同步方法及装置
CN106888076B (zh) * 2015-12-15 2020-08-25 中兴通讯股份有限公司 一种波束训练中实现同步的方法及装置
CN108449296B (zh) * 2018-02-07 2021-01-08 南京理工大学 基于信号正逆序循环拼接的短时突发通信载波同步方法
CN113726696A (zh) * 2021-08-30 2021-11-30 中国电子科技集团公司第五十四研究所 一种低截获的单载波频域均衡方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008034292A1 (fr) * 2006-09-18 2008-03-27 Ming Yang Structure de trame efficace pour télécommunications numériques par satellite
CN101340231A (zh) * 2008-08-29 2009-01-07 清华大学 一种定时同步方法及系统
CN101409694A (zh) * 2008-11-06 2009-04-15 北京韦加航通科技有限责任公司 一种单载波频域均衡实现方法及系统
CN101578829A (zh) * 2007-03-21 2009-11-11 中兴通讯股份有限公司 一种信道估计方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1976208B1 (fr) * 2007-03-30 2011-05-25 Sony Deutschland Gmbh Système de communication sans fil à porteuse unique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008034292A1 (fr) * 2006-09-18 2008-03-27 Ming Yang Structure de trame efficace pour télécommunications numériques par satellite
CN101578829A (zh) * 2007-03-21 2009-11-11 中兴通讯股份有限公司 一种信道估计方法
CN101340231A (zh) * 2008-08-29 2009-01-07 清华大学 一种定时同步方法及系统
CN101409694A (zh) * 2008-11-06 2009-04-15 北京韦加航通科技有限责任公司 一种单载波频域均衡实现方法及系统

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