WO2008151555A1 - Procédé d'allocation de sous-porteuse, dispositif de mappage de ressource et procédé et dispositif de transmission de données - Google Patents

Procédé d'allocation de sous-porteuse, dispositif de mappage de ressource et procédé et dispositif de transmission de données Download PDF

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Publication number
WO2008151555A1
WO2008151555A1 PCT/CN2008/071219 CN2008071219W WO2008151555A1 WO 2008151555 A1 WO2008151555 A1 WO 2008151555A1 CN 2008071219 W CN2008071219 W CN 2008071219W WO 2008151555 A1 WO2008151555 A1 WO 2008151555A1
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WO
WIPO (PCT)
Prior art keywords
block
data
mapping
subcarriers
discrete
Prior art date
Application number
PCT/CN2008/071219
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English (en)
Chinese (zh)
Inventor
Yi Wang
Zhenfei Tang
Yuanjie Li
Hongmei Yao
Original Assignee
Huawei Technologies Co., Ltd.
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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008151555A1 publication Critical patent/WO2008151555A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload

Definitions

  • the present invention relates to the field of communications, and in particular, to a subcarrier allocation method and resource mapping apparatus, and a data transmission method and apparatus.
  • BR-OFDMA Block Repeated Orthogonal Frequency Division Multiple Access
  • OFDM Orthogonal Frequency Division Multiplex
  • mapping the data onto different OFDM modulated subcarriers After repeatedly weighting the unit block data, mapping the data onto different OFDM modulated subcarriers;
  • IFFT inverse completed Fast Fourier Transform
  • the process of mapping the data onto different OFDM modulated subcarriers can be regarded as a process of subcarrier allocation.
  • the subcarrier allocation in the above technology uses a continuous allocation mode, that is, the subcarriers in the basic resource block are in physical form.
  • the resources are contiguous, and the resource blocks occupied by the duplicate blocks are also contiguous.
  • the repeating block occupies resources of a plurality of basic resource blocks, and the subcarriers between the basic resource blocks are continuous.
  • the repeating blocks are continuous in time and in the frequency domain (in the frequency domain, that is, on the subcarriers), so that it is impossible to obtain better repeating blocks between time and frequency. Diversity gain.
  • a technical problem to be solved by embodiments of the present invention is to provide a subcarrier allocation method and resource mapping.
  • the device and the data transmission method and apparatus can obtain higher diversity gain.
  • the subcarrier allocation method provided by the embodiment of the present invention includes: receiving a data block to be mapped; and mapping the data block to a discrete subcarrier segment.
  • the resource mapping apparatus includes: a receiving unit, configured to receive a data block to be mapped; a mapping control unit, configured to determine a location of a discrete subcarrier to which the data block needs to be mapped; and a mapping execution unit, And mapping the data block to a corresponding location according to a location of the discrete subcarrier determined by the mapping control unit.
  • the subcarrier allocation method provided by the embodiment of the present invention includes: receiving a data block to be mapped; mapping the data block to a discrete resource block, where the resource block includes several consecutive subcarriers or a plurality of discrete subcarriers.
  • the data transmission method provided by the embodiment of the present invention includes: receiving a repeated block to be mapped; mapping the repeated block to a discrete resource block; and obtaining the repeated block mapped to the discrete resource block by frequency-time transform Time domain signal; transmitting the time domain signal.
  • the data transmission method provided by the embodiment of the present invention includes: performing channel coding on a user data and modulating a symbol data stream; dividing the symbol data stream into data symbol blocks; performing modulation mapping on the data symbol block to generate a unit block; Performing repeated weighting on the unit block to obtain a repeating block, mapping the repeated block to a discrete subcarrier segment; converting the mapped data into a time domain signal transmission by frequency domain-time domain conversion.
  • the data transmission apparatus includes: a coding unit, configured to perform channel coding on user data to obtain a bit data stream; and a symbol modulation unit, configured to modulate a bit stream obtained by channel coding by the coding unit into a symbol a data stream; a block modulating unit, configured to divide the symbol data stream modulated by the symbol modulation unit into data symbol blocks, perform modulation mapping on the data symbol block, generate a unit block, and perform weighting on the unit block to obtain a repeating block.
  • a resource mapping unit configured to map the repeated block obtained by the block modulation unit to a discrete subcarrier
  • an orthogonal frequency division multiplexing modulation unit configured to convert the mapped data into a time domain by inverse fast Fourier transform Signal transmission.
  • a transmitter provided by an embodiment of the present invention includes the above data transmission apparatus.
  • the embodiments of the present invention have the following advantages:
  • the repeated blocks are mapped to the discrete subcarriers, the subcarriers occupied between the repeated blocks or within the repeated blocks are discrete, so that a higher diversity gain can be obtained, and further Improve system performance.
  • FIG. 1 is a schematic diagram of a subcarrier allocation manner in the prior art
  • FIG. 2 is a flowchart of a first embodiment of a subcarrier allocation method according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a second embodiment of a subcarrier allocation method according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a first embodiment of a data transmission method according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a second embodiment of a data transmission method according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an embodiment of a resource mapping apparatus according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an embodiment of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of performance comparison of multiple mapping modes according to an embodiment of the present invention.
  • Embodiments of the present invention provide a seed carrier allocation method, a resource mapping apparatus, and a data transmission method and apparatus, which are used to obtain higher diversity gain, thereby improving system performance.
  • the data block is mapped to the discrete subcarriers, so that a higher diversity gain can be obtained, which is beneficial to improving system performance, and the specific allocation manner can be divided into two types:
  • the data block to be mapped is directly mapped to the discrete subcarrier segments, where each subcarrier segment includes several consecutive subcarriers, and at least two of all subcarrier segments have two subcarriers.
  • the bands are discrete, that is, there are at least two subcarrier segments separated by a number of subcarriers.
  • the specific mapping means is as shown in the following embodiment. It can be understood that other mappings can be retrieved as well.
  • the first data block is mapped to a continuous subcarrier and a continuous OFDM symbol, that is, one data block occupies several subcarriers and several OFDM symbols, and the occupied subcarriers and OFDM symbols are continuous.
  • Map a second data block at the interval position Mapping the second data block to a contiguous subcarrier and a contiguous OFDM symbol at a position spaced apart from the first data block by a preset number of subcarriers or OFDM symbols, ie, spacing between the second data block and the first data block There are a number of subcarriers or OFDM symbols, and the number of intervals is determined by a specific case and is not limited herein.
  • each data block is continuous, and each data block is discontinuous, that is, there are several subcarriers or OFDM symbols at intervals.
  • a second embodiment of a method for subcarrier allocation in an embodiment of the present invention includes:
  • the subcarriers occupied by each data block are discrete, that is, if one data block occupies N subcarriers, then any two of the N subcarriers are separated by several subcarriers, and the specific interval is The number of subcarriers is determined by a specific case and is not limited herein.
  • a first embodiment of a data transmission method in an embodiment of the present invention includes:
  • the user data enters the channel coding to form a bit data stream, and the specific coding method may be puncturing or interleaving, or other coding manner, which is not limited herein. 402. Modulating a bit stream;
  • the encoded bit stream is modulated to obtain a symbol data stream.
  • the specific modulation method may be Binary Phase Shift Keying (BPSK) or Quadrature Phase Shift Keying (QPSK, Quaternary Phase Shift Keying). ), or hexadecimal quadrature amplitude modulation (16QAM, 16 Quadrature Amplitude Modulation) or octal quadrature amplitude modulation 64QAM, or other modulation methods, which are not limited herein.
  • the modulated symbol data stream is divided into blocks to obtain a data symbol block.
  • the specific blocking method is a prior art, and details are not described herein again.
  • a weighting factor sequence quadsi-random scrambling code sequence or orthogonal code sequence
  • the length of the weighted sequence factor is equal to the number of repetitions, and multiple blocks are generated.
  • the first repeating block is mapped to a contiguous subcarrier and a continuous OFDM symbol, that is, one unit block occupies several subcarriers and several OFDM symbols, and the occupied subcarriers and OFDM symbols are continuous.
  • mapping the second repeating block to a continuous subcarrier and a continuous OFDM symbol at a position of a preset number of subcarriers or OFDM symbols from the first repeating block, that is, spacing between the second repeating block and the first repeating block
  • time domain signal transmission is generated.
  • the following example is used to illustrate the embodiment: assuming a bandwidth of 5 MHz, the subcarrier spacing is At 20 Hz, a total of 220 subcarriers are allocated to the user service data.
  • bit stream is converted into a symbol stream, and then the symbol stream is divided into blocks to obtain a block of data symbols, and the block of data symbols is modulated to obtain a unit block.
  • the unit block needs to be repeated 4 times, that is, the unit block is subjected to 4 repetition weights to obtain 4 repeating blocks.
  • An average of 220 subcarriers is divided in the frequency domain, and every 10 subcarriers are divided into a group, and then divided into 22 groups, each group is called a basic resource block, and each basic resource block occupies 10 subcarriers, and the whole There are 22 basic resource blocks in frequency.
  • the subcarriers in the basic resource block are contiguous subcarriers in this embodiment, and 4 repetitive blocks are respectively mapped to 4 basic resource blocks, and each repetitive block occupies one basic resource block, and the principle of subcarrier allocation is There are several basic resource blocks spaced between every two repeating blocks, that is, several subcarriers are separated.
  • the repeating block 1 and the repeating block 2 are separated by 10 basic resource blocks, that is, 100 subcarriers, and the interval between the repeating block 2 and the repeating block 4 is 5
  • the basic resource block, that is, 50 subcarriers has 5 basic resource blocks, that is, 50 subcarriers, between the repeating block 1 and the repeating block 3, and 10 basic resource blocks, that is, 100 subspaces, between the repeating block 3 and the repeating block 4 Carrier.
  • a data transmission method based on a block distributed subcarrier allocation scheme is introduced.
  • the following describes a data transmission method based on a fully distributed subcarrier allocation scheme:
  • a second embodiment of a data transmission method in an embodiment of the present invention includes:
  • the user data enters the channel coding to form a bit data stream, and the specific coding method may be puncturing or interleaving, or other coding manner, which is not limited herein.
  • the encoded bit stream is modulated to obtain a symbol data stream.
  • the specific modulation method may be BPSK or QPSK or 16QAM or 64QAM, or other modulation methods, which are not limited herein.
  • the modulated symbol data stream is divided into blocks to obtain a data symbol block.
  • the specific blocking method is a prior art, and details are not described herein again. 504. Modulating a data symbol block to obtain a unit block.
  • a weighting factor sequence quadsi-random scrambling code sequence or orthogonal code sequence
  • the length of the weighted sequence factor is equal to the number of repetitions, and multiple blocks are generated.
  • time domain signal transmission is generated.
  • the following is a specific example to illustrate the present embodiment: assuming a bandwidth of 5 MHz, the subcarrier spacing is 20 Hz, and a total of 220 subcarriers are allocated to the user service data on the frequency.
  • bit stream is converted into a symbol stream, and then the symbol stream is divided into blocks to obtain a block of data symbols, and the block of data symbols is modulated to obtain a unit block.
  • each of the repeating blocks occupies one logical resource block, and the logical resource block has no specific meaning, and only represents the resources occupied by the duplicate block, and physically each The repeating block occupies 10 subcarriers, and the frequency domain resources composed of the 10 subcarriers are referred to as one physical resource block.
  • the specific allocation method has the following two cases:
  • mapping of logical resource blocks to physical resource blocks is formulated as follows: Represents the Kth logical resource block, and f PHY K represents the Kth physical resource block.
  • the allocation of fully distributed subcarriers can be accomplished by mapping logical resource blocks to physical resource blocks. 2.
  • ⁇ represents the Kth logical resource block
  • f PHYK represents the Kth physical resource block.
  • the allocation of fully distributed subcarriers can be accomplished by mapping logical resource blocks to physical resource blocks.
  • the data transmission method is introduced in the foregoing embodiment, wherein the block distributed subcarrier allocation scheme can obtain a certain diversity gain, and has the advantages of some consecutive allocation subcarrier schemes, such as facilitating high-level scheduling and obtaining a certain scheduling gain. .
  • the fully distributed subcarrier allocation scheme can obtain the maximum diversity gain, which is beneficial to the averaging of interference. In practical applications, the selection can be made according to the specific situation, so the flexibility of the embodiment of the invention is improved.
  • the resource mapping apparatus in the embodiment of the present invention includes:
  • a receiving unit 601 configured to receive a data block to be sent
  • mapping control unit 602 configured to determine a location of a discrete subcarrier to which the data block needs to be mapped;
  • mapping execution unit 603 configured to map the data block to a corresponding one according to a location of the discrete subcarrier determined by the mapping control unit position.
  • mapping control unit 602 determines the location of the discrete subcarrier to which the data block needs to be mapped is related to the scheme of the subcarrier allocation, specifically:
  • the mapping control unit 602 groups the subcarriers according to the frequency domain resources, and acquires the number of data blocks and the number of subcarriers occupied by each data block, and determines the number of subcarriers spaced between each two data blocks.
  • the determining manner is related to the specific application. For example, if a larger diversity gain is required, the number of subcarriers between the data blocks may be increased. If it is necessary to facilitate high-level scheduling, the interval between the data blocks may be reduced.
  • the number of carriers is not limited here.
  • the mapping control unit 602 determines the number of data blocks and the number of subcarriers occupied by each data block. Each data block is treated as a logical resource block, and the subcarrier occupied by each data block is taken as one physical resource block. After obtaining the total frequency domain resource and the subcarrier spacing, the mapping relationship between the logical resource block and the physical resource block is set, that is, each repeated block will be mapped to several discrete subcarriers. The spacing between each subcarrier and the adjacent subcarriers is determined by the actual application. If a larger diversity gain is required, the interval between subcarriers can be increased. The scheduling between the subcarriers can be reduced, which is not limited herein.
  • the number of subcarriers that are spaced between the repeating blocks is controlled; the position of the subcarrier to which the repeating block is mapped is determined when the fully distributed subcarrier allocation is performed.
  • the data transmission apparatus in the embodiment of the present invention includes:
  • a coding unit 701 configured to perform channel coding on user data to obtain a bit data stream
  • a symbol modulation unit 702 configured to modulate the bit data stream into a symbol data stream
  • a block modulating unit 703 configured to divide the modulated symbol data stream into data symbol blocks, perform modulation mapping on the data symbol block, generate a unit block, and perform repeated weighting on the unit block;
  • the serial-to-parallel conversion unit 704 is configured to receive the repeatedly weighted unit block, and perform serial-to-parallel conversion on the unit block, and then send the unit block to the resource mapping unit.
  • the resource mapping unit 705 is configured to map the unit block acquired from the serial to parallel conversion unit 704 onto the discrete subcarriers;
  • the orthogonal frequency division multiplexing modulation unit 706 is configured to convert the mapped data into time domain signal transmission by inverse fast Fourier transform.
  • the above-described data transmission device embodiment may be implemented without the serial to parallel conversion unit 704.
  • BDBR a fully distributed solution called a fully distributed block repetition scheme, FDBR for short, performs simulation analysis of the system performance in the case of QPSK and 16QAM, that is, the relationship between signal-to-noise ratio Eb/ ⁇ and block error rate BLER As shown in FIG.
  • line 1 is a schematic line of LBR QPSK
  • line 2 is a schematic line of BDBR QPSK
  • line 3 is a schematic line of FDBR QPSK
  • line 4 is a schematic line of LBR 16QAM
  • line 5 is a BDBR 16QAM
  • line 6 is the schematic line of the FDBR 16QAM.
  • the mapped data is converted to time domain signaling by frequency domain-time domain conversion.
  • the above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé d'allocation de sous-porteuse, un dispositif de mappage de ressource et un procédé et un dispositif de transmission de données. Ledit procédé de transmission de données comprend les opérations consistant à: effectuer un codage de canal et une modulation sur des données utilisateur pour obtenir un flux de données de symbole; diviser ledit flux de données de symbole en blocs de symbole de données; moduler et mapper ledit bloc de symbole de données pour générer un bloc unitaire; effectuer une répétition pondérée sur ledit bloc unitaire pour obtenir un bloc répété; mapper ledit bloc répété à des bandes de sous-porteuse discrètes; effectuer la transformée fréquence-temps sur lesdites données mappées pour obtenir les signaux du domaine temporel; envoyer lesdits signaux du domaine temporel. L'invention concerne également un procédé d'allocation de sous-porteuse, un dispositif de mappage de ressource et un dispositif de transmission de données correspondants.
PCT/CN2008/071219 2007-06-08 2008-06-06 Procédé d'allocation de sous-porteuse, dispositif de mappage de ressource et procédé et dispositif de transmission de données WO2008151555A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2007101106978A CN101321142A (zh) 2007-06-08 2007-06-08 子载波分配方法及资源映射装置以及数据传输方法及装置
CN200710110697.8 2007-06-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11165550B2 (en) 2016-12-16 2021-11-02 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Resource mapping method and communication device
CN115051780A (zh) * 2019-09-19 2022-09-13 北京东土科技股份有限公司 物理资源块分配方法、装置、设备及存储介质

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CN101510791B (zh) * 2009-03-27 2012-04-18 北京天碁科技有限公司 时分无线通信系统中的发射装置、调制方法及调制装置
CN102916926A (zh) * 2011-08-05 2013-02-06 中兴通讯股份有限公司 数据发送方法、还原方法和装置
CN103095629B (zh) * 2011-11-01 2017-04-26 华为技术有限公司 数据发送和接收方法、设备和系统
CN104639275B (zh) * 2013-11-11 2017-10-10 华为技术有限公司 复用装置、解复用装置、方法、内存控制器、内存及系统
US9503165B2 (en) * 2014-02-07 2016-11-22 Broadcom Corporation Uplink multiuser carrier frequency offset (CFO) estimation in wireless communications
CN107645370B (zh) * 2016-07-20 2020-12-08 华为技术有限公司 资源映射方法和装置
CN108289022A (zh) * 2018-01-11 2018-07-17 中国矿业大学 多用户noma的一种自适应等效子载波分配系统及方法
CN112054982B (zh) * 2019-06-06 2022-05-17 华为技术有限公司 一种信号的发送、接收方法及通信装置
CN115883304A (zh) * 2021-08-13 2023-03-31 华为技术有限公司 一种数据传输方法及通信装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1509539A (zh) * 2001-03-26 2004-06-30 ���ǵ�����ʽ���� 基于正交频分多址的数据通信设备和方法
WO2006013705A1 (fr) * 2004-08-06 2006-02-09 Matsushita Electric Industrial Co., Ltd. Appareil de transmission radio et procede de transmission radio dans une communication a porteuses multiples
CN1747462A (zh) * 2005-10-20 2006-03-15 清华大学 一种正交频分复用系统信号发送及接收方法
WO2007018154A1 (fr) * 2005-08-05 2007-02-15 Matsushita Electric Industrial Co., Ltd. Appareil station de base de transmission sans fil et procédé de transmission sans fil dans une transmission multiporteuse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1509539A (zh) * 2001-03-26 2004-06-30 ���ǵ�����ʽ���� 基于正交频分多址的数据通信设备和方法
WO2006013705A1 (fr) * 2004-08-06 2006-02-09 Matsushita Electric Industrial Co., Ltd. Appareil de transmission radio et procede de transmission radio dans une communication a porteuses multiples
WO2007018154A1 (fr) * 2005-08-05 2007-02-15 Matsushita Electric Industrial Co., Ltd. Appareil station de base de transmission sans fil et procédé de transmission sans fil dans une transmission multiporteuse
CN1747462A (zh) * 2005-10-20 2006-03-15 清华大学 一种正交频分复用系统信号发送及接收方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11165550B2 (en) 2016-12-16 2021-11-02 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Resource mapping method and communication device
CN115051780A (zh) * 2019-09-19 2022-09-13 北京东土科技股份有限公司 物理资源块分配方法、装置、设备及存储介质
CN115051780B (zh) * 2019-09-19 2024-02-13 北京东土科技股份有限公司 物理资源块分配方法、装置、设备及存储介质

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