WO2022002005A1 - Procédé de génération de séquence et dispositif associé - Google Patents

Procédé de génération de séquence et dispositif associé Download PDF

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Publication number
WO2022002005A1
WO2022002005A1 PCT/CN2021/102932 CN2021102932W WO2022002005A1 WO 2022002005 A1 WO2022002005 A1 WO 2022002005A1 CN 2021102932 W CN2021102932 W CN 2021102932W WO 2022002005 A1 WO2022002005 A1 WO 2022002005A1
Authority
WO
WIPO (PCT)
Prior art keywords
pilot
terminal device
orthogonal matrix
elements
pilot sequence
Prior art date
Application number
PCT/CN2021/102932
Other languages
English (en)
Chinese (zh)
Inventor
王超
吴艺群
陈雁
魏帆
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2022002005A1 publication Critical patent/WO2022002005A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/0022—PN, e.g. Kronecker
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/0055—ZCZ [zero correlation zone]
    • H04J13/0059—CAZAC [constant-amplitude and zero auto-correlation]
    • H04J13/0062—Zadoff-Chu
    • 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
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
    • H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance

Definitions

  • the type of the orthogonal matrix in the first parameter determines that the pilot sequence of the terminal device is selected from the orthogonal matrix, which can reduce the processing complexity of the receiving end.
  • the terminal device selects L elements from one or more column elements of the N ⁇ N orthogonal matrix X, including:
  • the length of the pilot sequence may be determined by the terminal device according to the time-frequency resources occupied by the pilot.
  • the network device determines that one or more columns in the matrix X' constitute a pilot sequence set
  • the L elements are scrambled, and the L elements obtained after scrambling constitute the pilot sequence of the terminal equipment.
  • the processing unit is configured to determine the L ⁇ N matrix X′ from the orthogonal matrix X according to the length L of the pilot sequence, and is specifically used for:
  • the cell identifier of the cell where the terminal equipment is located
  • an embodiment of the present application provides a chip or a chip system, the chip or chip system includes at least one processor and an interface, the interface and the at least one processor are interconnected through a line, and the at least one processor is used for running a computer program or instruction , to perform the method described in any one of the second aspect or any possible implementation manner of the second aspect.
  • the embodiments of the present application provide a computer program or computer program product, including codes or instructions, when the codes or instructions are run on a computer, the computer executes the second aspect or any one of the second aspects may be implemented method in method.
  • FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • New radio access technology covers enhanced mobile broadband (eMBB), ultra-reliable low latency communications (uRLLC) and massive machine type communications (massive machine type communications, mMTC) these three scenarios.
  • eMBB enhanced mobile broadband
  • uRLLC ultra-reliable low latency communications
  • mMTC massive machine type communications
  • FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • the communication system includes network equipment and terminal equipment, and can support access of a large number of terminal equipment.
  • Figure 1 includes one network device and four terminal devices. Wherein, terminal equipment 1 and terminal equipment 2 are located in cell 1, terminal equipment 3 and terminal equipment 4 are located in cell 2, and the above four terminal equipments all access network equipment.
  • the network device and terminal device in FIG. 1 are only an example, and the number of terminal devices accessed by the network device is not limited in this embodiment.
  • the pilot sequence In the existing Long Term Evolution (Long Term Evolution, LTE) and NR, the pilot sequence usually adopts a ZC (Zadoff-Chu) sequence, or a pseudo random (pseudo random noise, PN) sequence.
  • ZC Zero-Chu
  • PN pseudo random
  • the network equipment can specify the pilot frequency sequences that the terminal equipment can use.
  • the pilot configuration parameter of the terminal device includes a first parameter for configuring an orthogonal matrix used by the terminal device.
  • the first parameter may include, but is not limited to, the total number of pilots N and/or the type of orthogonal matrix, and the like.
  • the orthogonal matrix type indicates what type of orthogonal matrix is used by the pilot sequence of the terminal device.
  • the embodiment of the present application proposes that the pilot sequences are selected from orthogonal matrices.
  • Orthogonal matrix types may include but are not limited to discrete Fourier transform (discrete Fourier transform, DFT) matrix, inverse discrete Fourier transform (inverse discrete Fourier transform, IDFT) matrix, Hadamard (Hadamard) matrix, ZC matrix and other positive intersection matrix.
  • the ZC matrix is generated by performing N cyclic shifts of the ZC sequence. The result of each cyclic shift constitutes a row or column of the ZC matrix. The root of the generated ZC sequence and the length of the ZC sequence satisfy a co-prime relationship.
  • the terminal device can determine the orthogonality according to one or more parameters of the cell identity of the cell where the terminal device is located, the terminal identity of the terminal device, the time-frequency location parameter associated with the pilot, or the RRC signaling parameter configured by the network device.
  • the set of column numbers in the matrix that can be used to form pilot sequences for this terminal device.
  • the network device determines the orthogonal matrix X according to the total number N of pilots and/or the type of the orthogonal matrix;
  • the base station selects M columns from the L ⁇ N matrix X′, and each column constitutes a pilot sequence. That is to say, the M pilot sequences constitute a pilot sequence set, and M is a positive integer less than or equal to N.
  • the base station can allocate the M pilot sequences to multiple terminal devices in the cell, that is, the base station can directly send the pilot sequences corresponding to the terminal device to the terminal device.
  • the base station may send the pilot sequence set to the terminal device, and then the terminal device selects the pilot sequence of the terminal device from the pilot sequence set by itself.
  • the terminal equipment can configure the pilot frequency sequence of the terminal equipment according to the received pilot frequency configuration parameters. That is, the terminal device can determine the pilot sequence of the terminal device from the orthogonal matrix. Some or all of the elements in each column of the orthogonal matrix may constitute a pilot sequence or a pilot subsequence.
  • the selection method of the terminal device will be described in detail below by taking L elements from a column of elements of the orthogonal matrix X as an example.
  • the terminal device may correspondingly select L elements from one column of the orthogonal matrix X according to the L values obtained by the above calculation.
  • the L elements constitute the pilot sequence of the terminal equipment.
  • terminal devices in different cells may select the same L elements from the same orthogonal matrix X, and the terminal device may also scramble the selected L elements, and the L elements obtained after scrambling constitute the terminal.
  • the pilot sequence of the device may be selected from the same orthogonal matrix X, and the terminal device may also scramble the selected L elements, and the L elements obtained after scrambling constitute the terminal.
  • terminal equipment 1 is located within the signal coverage of cell 1
  • terminal equipment 2 is located within the signal coverage of cell 2.
  • the terminal device 1 and the terminal device 2 can select the same number (for example, L) and the same position of elements, that is, the L elements selected by the terminal device 1 and the terminal device 2 are exactly the same.
  • the terminal device may determine the pilot sequence corresponding to the p th frequency band from the orthogonal matrix X.
  • the method for the terminal device to determine the pilot sequence corresponding to the p-th frequency band may include, but is not limited to, the random extraction method described in the above embodiment, the extraction method according to a specified formula, and the like.
  • the processing unit 602 is configured to determine the pilot sequence of the terminal equipment from the orthogonal matrix.
  • the processing unit 602 selects L elements from the elements of the multiple columns of the N ⁇ N orthogonal matrix X, and the number and/or position of the selected elements in each column are the same.
  • the L elements are subjected to precoding processing, and the L elements obtained after the precoding processing constitute the pilot sequence of the terminal device.
  • a DFT matrix may be used to perform precoding processing on the above-mentioned L elements.
  • the pilot sequence of the terminal device is determined from one or more columns in the matrix X'.
  • L rows are randomly selected from the orthogonal matrix X to determine an L ⁇ N matrix X′.
  • FIG. 7 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device may be a device (eg, a chip) having the function of performing the sequence generation described in the embodiment of the present application.
  • the terminal device may include a transceiver 701 , at least one processor 702 and a memory 703 .
  • the transceiver 701, the processor 702 and the memory 703 may be connected to each other through one or more communication buses, and may also be connected to each other in other ways.
  • the memory 703 is used for storing program codes and the like.
  • the memory 703 may include a volatile memory (volatile memory), such as random access memory (RAM); the memory 703 may also include a non-volatile memory (non-volatile memory), such as a read-only memory (read- only memory, ROM), flash memory (flash memory), hard disk drive (HDD) or solid-state drive (solid-state drive, SSD); the memory 703 may also include a combination of the above-mentioned types of memory.
  • the processor 702 is configured to determine the pilot sequence of the terminal equipment from the orthogonal matrix.
  • the processor 702 is configured to determine an L ⁇ N matrix X′ from the orthogonal matrix X according to the length L of the pilot sequence, and is specifically configured to:
  • Transceiver unit 802 configured to send pilot configuration parameters to terminal equipment.
  • Radio resource control RRC signaling parameters configured by the network device.
  • processing unit 801 is further configured to:
  • the processor 902 is configured to acquire pilot configuration parameters of the terminal device, where the pilot configuration parameters include a first parameter used to configure an orthogonal matrix used by the terminal device, and some or all of the elements in each column of the orthogonal matrix constitute a pilot. frequency sequence or pilot subsequence;
  • the pilot configuration parameter further includes a pilot sequence length L and/or a second parameter, where the second parameter is used to configure a set of column numbers in the orthogonal matrix that can be used to form the pilot sequence of the terminal device .
  • Terminal identification of the terminal equipment
  • the transceiver 901 is further configured to send one or more pilot sequences in the set of pilot sequences to one or more corresponding terminal devices; or, to send the set of pilot sequences to the terminal device, so that the The pilot sequence of the terminal equipment is selected from the pilot sequence set.
  • An embodiment of the present application provides a communication system, where the communication system includes the terminal device and the network device described in the foregoing embodiments.
  • An embodiment of the present application provides a chip or a chip system, the chip or chip system includes at least one processor and an interface, the interface and the at least one processor are interconnected by a line, and the at least one processor is used to run a computer program or instruction to perform the present application Sequence generation method in the Examples.

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

Abstract

Est divulgué ici un procédé de génération de séquence et un dispositif associé. Le procédé de génération de séquence peut être mis en œuvre au moyen d'une interaction entre un dispositif de réseau et un dispositif terminal. Le dispositif de réseau détermine un paramètre de configuration de fréquence pilote du dispositif terminal, et envoie le paramètre de configuration de fréquence pilote au dispositif terminal. Le dispositif terminal peut déterminer, selon une matrice orthogonale indiquée par le paramètre de configuration de fréquence pilote et à partir de la matrice orthogonale, certains ou tous les éléments dans chaque colonne de la matrice orthogonale, de manière à constituer une séquence de fréquence pilote du dispositif terminal. On peut voir que la séquence de fréquence pilote générée en utilisant le procédé est sélectionnée à partir de la matrice orthogonale, de telle sorte que le nombre de séquences de fréquence pilote tend à être infini, répondant ainsi à l'exigence de terminaux massifs dans un scénario mMTC, et facilitant l'augmentation de la capacité du système. De plus, la complexité de traitement au niveau d'une extrémité de réception est réduite au moyen de la conception de fréquences pilotes.
PCT/CN2021/102932 2020-06-29 2021-06-29 Procédé de génération de séquence et dispositif associé WO2022002005A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202010604528.5 2020-06-29
CN202010604528 2020-06-29
CN202010808797.3A CN113938864A (zh) 2020-06-29 2020-08-12 一种序列生成方法及相关设备
CN202010808797.3 2020-08-12

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WO2022002005A1 true WO2022002005A1 (fr) 2022-01-06

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CN116055020B (zh) * 2023-03-30 2023-06-02 南京邮电大学 非正交导频构建方法及免授权接入过程的信号传输方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102148675A (zh) * 2011-05-06 2011-08-10 北京邮电大学 一种基于混合自动重传的随机接入协议
CN106685625A (zh) * 2016-12-20 2017-05-17 武汉拓宝科技股份有限公司 一种导频结构、导频发送方法以及用户信道估计方法
US20190174466A1 (en) * 2018-01-22 2019-06-06 Intel Corporation Control signaling for uplink multiple input multiple output, channel state information reference signal configuration and sounding reference signal configuration

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102148675A (zh) * 2011-05-06 2011-08-10 北京邮电大学 一种基于混合自动重传的随机接入协议
CN106685625A (zh) * 2016-12-20 2017-05-17 武汉拓宝科技股份有限公司 一种导频结构、导频发送方法以及用户信道估计方法
US20190174466A1 (en) * 2018-01-22 2019-06-06 Intel Corporation Control signaling for uplink multiple input multiple output, channel state information reference signal configuration and sounding reference signal configuration

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