WO2021254363A1 - Procédé et appareil de configuration d'espace de canal, dispositif informatique et support de stockage lisible par ordinateur - Google Patents

Procédé et appareil de configuration d'espace de canal, dispositif informatique et support de stockage lisible par ordinateur Download PDF

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Publication number
WO2021254363A1
WO2021254363A1 PCT/CN2021/100273 CN2021100273W WO2021254363A1 WO 2021254363 A1 WO2021254363 A1 WO 2021254363A1 CN 2021100273 W CN2021100273 W CN 2021100273W WO 2021254363 A1 WO2021254363 A1 WO 2021254363A1
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Prior art keywords
characteristic parameter
codebook
channel space
channel
physical layer
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PCT/CN2021/100273
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English (en)
Chinese (zh)
Inventor
吴昊
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中兴通讯股份有限公司
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Publication of WO2021254363A1 publication Critical patent/WO2021254363A1/fr

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    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H04L5/0025—Spatial division following the spatial signature of the channel
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

Definitions

  • the present disclosure relates to the field of wireless communication technology.
  • the channel space configuration parameters are set in advance and are directly issued to the physical layer.
  • the channel space configuration parameters cannot reflect the current channel space status. After configuring according to the configuration parameters, the system performance is not optimal, so the system performance is not optimal. good.
  • An aspect of the embodiments of the present disclosure provides a channel space configuration method, including: acquiring a first characteristic parameter of the channel space; generating and storing a codebook according to the first characteristic parameter; and issuing the codebook to a physical layer.
  • a channel space configuration device including: an acquisition module configured to acquire a first characteristic parameter of the channel space; a codebook generation module configured to generate and store a code according to the first characteristic parameter The storage space of the codebook is smaller than the storage space for storing the first characteristic parameter; and the configuration module is configured to issue the codebook to the physical layer.
  • Another aspect of the embodiments of the present disclosure provides a computer device, including: at least one processor; and, a memory on which at least one program is stored; when the at least one program is executed by the at least one processor, the at least one processor At least one step of the channel space configuration method provided by the embodiment of the present disclosure is implemented.
  • Another aspect of the embodiments of the present disclosure provides a computer-readable storage medium on which a computer program is stored, and when the program is executed, it realizes at least one step of the channel space configuration method provided by the embodiment of the present disclosure.
  • FIG. 1 is a schematic diagram of a channel space configuration process provided by an embodiment of the disclosure.
  • FIG. 2 is a second schematic diagram of a channel space configuration process provided by an embodiment of the disclosure.
  • FIG. 3 is one of the structural schematic diagrams of a channel space configuration device provided by an embodiment of the disclosure.
  • FIG. 4 is the second structural diagram of a channel space configuration device provided by an embodiment of the disclosure.
  • the embodiment of the present disclosure provides a channel space configuration method.
  • the characteristic parameter type of the channel space is preset, and the characteristic parameter of the set type should be able to reduce the storage space of the configuration parameter used to characterize the state of the channel space.
  • the type of characteristic parameters may include one or any combination of the following: root mean square delay spread, signal-to-noise ratio, power delay spectrum, channel estimation filter coefficients, channel correlation matrix, Fourier transform matrix , The power delay spectrum is non-zero, and the mean square error of the channel estimation.
  • the types of characteristic parameters include but are not limited to the above-mentioned types.
  • the characteristic parameters may be one or more types of the above-mentioned characteristic parameters, and may also be functions of the above-mentioned one or more types of characteristic parameters.
  • the characteristic parameter can be a function of the singular value decomposition of the channel correlation matrix and the signal-to-noise ratio, or a function of the singular value decomposition of the channel correlation matrix and the non-zero value of the power delay spectrum.
  • the channel space configuration method may include step S11-step S13.
  • step S11 the first characteristic parameter of the channel space is acquired.
  • the first characteristic parameter is the previously defined characteristic parameter.
  • the first characteristic parameter of the corresponding type is obtained according to the predetermined type.
  • step S12 a codebook is generated and stored according to the first characteristic parameter.
  • the method of vector quantization can be used to generate the codebook.
  • the codebook is used to store the code, and the code is used to characterize the state of the channel space.
  • the storage space of the codebook is smaller than the storage space used to store the first characteristic parameter.
  • the process of the codebook is the compression process of storing configuration parameters that characterize the state of the channel space.
  • the vector quantization method may include: tree search vector quantization method and full search vector quantization method, etc.
  • the mean square error can be used to measure the quantization distortion.
  • the full search vector quantization method can compress the channel space data to the greatest extent, but it is not conducive to finding the most suitable code.
  • the tree search vector quantization method can minimize the amount of calculation for finding the most suitable code, but it will increase the size of the storage space occupied by the stored codebook.
  • Some receivers work in specific environments, such as indoor, suburban, urban, high-speed rail, underwater and other environments.
  • the power delay spectrum of these environments is generally limited to a small range of changes. In this way, the limitation of the power delay spectrum can be used to compress the codebook storage space.
  • the power delay spectrum is generally caused by scattered reflectors. Due to the sparseness of the reflectors, the power delay spectrum also has sparseness. In this way, the sparseness of the power delay spectrum can be used to compress the codebook storage space. Therefore, when the type of the first characteristic parameter includes the power delay spectrum, the codebook can be compressed smaller, that is, the codebook storage space can be compressed more optimally.
  • step S13 the codebook is issued to the physical layer.
  • the generated codebook is sent to the physical layer as the configuration parameters of the channel space, and the physical layer implements the parameter configuration operation, that is, the physical layer can select a code from the codebook that is most consistent with the actual channel for operation Processing to minimize the mean square error.
  • the first characteristic parameter of the channel space can be obtained, the codebook is generated and stored according to the first characteristic parameter, and the codebook is issued to the physical layer.
  • the codebook is sent to the physical layer as the configuration parameter of the channel space, and the codebook is designed and generated according to the actual state of the channel. Therefore, the channel configuration parameters sent to the physical layer are more reasonable, which can improve the system performance.
  • acquiring the first characteristic parameter of the channel space may include: acquiring the first characteristic parameter of the channel space from the physical layer.
  • the first characteristic parameter of the channel space reported by the physical layer reflects the current state of the channel space. Therefore, the codebook generated based on the first characteristic parameter can also match the current channel space state, that is, the configuration parameters are more reasonable.
  • the first characteristic parameter may also be preset according to the target working environment of the base station. Of course, the first characteristic parameter preset according to the target working environment of the base station is compared with the first characteristic parameter obtained from the physical layer. The real-time performance is poor, and accordingly the codebook generated from it is not reasonable.
  • step S13 sending the codebook to the physical layer may include: if the storage space of the codebook is less than a preset first threshold, sending the codebook to the physical layer. That is to say, in the embodiment of the present disclosure, the configuration parameters are sent to the physical layer according to the size of the storage space of the codebook, and when the storage space of the codebook is less than a certain threshold, the codebook is issued as the configuration parameter of the channel space.
  • the physical layer allows the physical layer to perform configuration operations in accordance with the generated codebook.
  • the preset configuration parameters (the configuration parameters are not codebooks) are issued to the physical layer in the existing manner, so that the physical layer performs configuration operations according to the configuration parameters.
  • the codebook has a large storage space, the channel space is no longer configured according to the codebook to avoid excessive calculations on the physical layer and reduce the pressure on the physical layer.
  • the preset threshold can be determined according to the size of the system storage space.
  • the channel space configuration method may further include: instructing the physical layer to configure the channel space according to the codebook.
  • the physical layer can be instructed to select a code from the codebook that is most consistent with the actual channel to configure the channel space, so that the mean square error of the channel estimation is minimized.
  • the channel space configuration method may further include step S21 and step S22.
  • step S21 the second characteristic parameter of the channel space is acquired according to a preset period.
  • the second characteristic parameter may be the characteristic parameter set in the aforementioned initialization stage, that is, the type of the second characteristic parameter may be the same as the type of the first characteristic parameter. It should be noted that both the type of the first characteristic parameter and the type of the second characteristic parameter may include one or any combination of the following: root mean square delay spread, signal-to-noise ratio, power delay spectrum, channel estimation filter coefficient, channel correlation Matrix, Fourier transform matrix, non-zero value of power delay spectrum, or mean square error of channel estimation.
  • the type of the first characteristic parameter may be different from the type of the second characteristic parameter.
  • step S22 if the second characteristic parameter meets the preset condition, step S11 is executed; otherwise, the process ends.
  • the second characteristic parameter meets the preset conditions, it indicates that the current working environment of the base station has changed. Once the working environment changes, the channel space state will change. At this time, the codebook is still based on the previous working environment change. If the channel space is generated, the performance of the system using the codebook for channel space configuration is not optimal. Therefore, in this case, the codebook needs to be regenerated and stored, and the codebook generated this time is sent to Physical layer (that is, perform step S11-step S13).
  • the second characteristic parameter does not meet the preset condition, it indicates that the current working environment of the base station has not changed. Accordingly, there is no need to regenerate the codebook, and the process ends.
  • step S11 may be omitted and step S12 may be directly executed.
  • the second characteristic parameter meeting the preset condition may include: the ratio of the second characteristic parameter to the standard parameter is greater than the preset second threshold, and the standard parameter is the codebook used when acquiring the second characteristic parameter.
  • the average value of the second characteristic parameter of the second characteristic parameter that is, when the ratio of the average mean square error of the actual method of the second characteristic parameter to the average mean square error of the ideal method is greater than a certain threshold, the second characteristic parameter is considered to meet the preset condition.
  • satisfying the preset condition for the second characteristic parameter includes: all types of second characteristic parameters satisfy the preset condition.
  • the channel space configuration device includes an acquisition module 101, a codebook generation module 102, and a configuration module 103.
  • the acquiring module 101 is configured to acquire the first characteristic parameter of the channel space.
  • the codebook generating module 102 is configured to generate and store a codebook according to the first characteristic parameter, and the storage space of the codebook is smaller than the storage space for storing the first characteristic parameter.
  • the configuration module 103 is configured to deliver the codebook to the physical layer.
  • the configuration module 103 may be configured to issue the codebook to the physical layer when the storage space of the codebook is less than the preset first threshold.
  • the configuration module 103 may also be configured to instruct the physical layer to configure the channel space according to the codebook after sending the codebook to the physical layer.
  • the channel space configuration device may further include a monitoring module 104, and the acquisition module 101 may also be configured to acquire the second characteristic parameter of the channel space according to a preset period.
  • the monitoring module 104 may be configured to determine whether the second characteristic parameter meets a preset condition, and if so, instruct the acquiring module 101 to acquire the first characteristic parameter of the channel space.
  • the second characteristic parameter meeting the preset condition includes: the ratio of the second characteristic parameter to the standard parameter is greater than the preset second threshold, and the standard parameter is the value in the codebook used when the second characteristic parameter is acquired. The average value of the second characteristic parameter.
  • satisfying the preset condition for the second characteristic parameter includes: all types of second characteristic parameters satisfy the preset condition.
  • the types of the first characteristic parameter and the second characteristic parameter include one or any combination of the following: root mean square delay spread, signal-to-noise ratio, power delay spectrum, channel estimation filter coefficient, channel correlation matrix , Fourier transform matrix, non-zero value of power delay spectrum, or mean square error of channel estimation.
  • the embodiments of the present disclosure also provide a computer device, which includes: at least one processor and a memory; wherein at least one program is stored in the memory, and when the at least one program is executed by the at least one processor, the At least one processor implements at least one step of the channel space configuration method provided by the embodiment of the present disclosure.
  • the embodiment of the present disclosure also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed, it implements at least one step of the channel space configuration method provided by the embodiment of the present disclosure.
  • Such software may be distributed on a computer-readable medium, and the computer-readable medium may include a computer storage medium (or a non-transitory medium) and a communication medium (or a transitory medium).
  • the term computer storage medium includes volatile and non-volatile data implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Sexual, removable and non-removable media.
  • Computer storage media include, but are not limited to, Random Access Memory (RAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM) , Flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassette, tape, magnetic disk storage or other magnetic storage device, or can be used to store desired information and can be accessed by a computer Any other medium.
  • communication media usually contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as carrier waves or other transmission mechanisms, and may include any information delivery media. .

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

Abstract

La présente demande se rapporte au domaine technique de la communication sans fil, et concerne un procédé de configuration d'espace de canal. Le procédé fait appel aux étapes suivantes : l'acquisition d'un premier paramètre caractéristique d'un espace de canal ; la génération et le stockage d'un livre de codes selon le premier paramètre caractéristique ; et la fourniture du livre de codes à une couche physique. La présente demande concerne en outre un appareil de configuration d'espace de canal, un dispositif informatique et un support de stockage lisible par ordinateur.
PCT/CN2021/100273 2020-06-18 2021-06-16 Procédé et appareil de configuration d'espace de canal, dispositif informatique et support de stockage lisible par ordinateur WO2021254363A1 (fr)

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CN202010558453.1A CN113824541A (zh) 2020-06-18 2020-06-18 信道空间配置方法、装置、计算机设备和计算机可读介质
CN202010558453.1 2020-06-18

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101330359A (zh) * 2008-01-08 2008-12-24 上海交通大学 Mimo空分复用系统基于mmse准则的发送端优化方法及装置
US20110200081A1 (en) * 2010-02-17 2011-08-18 Research In Motion Limited System And Method For Channel Status Information Feedback In A Wireless Communications System That Utilizes Multiple-Input Multiple-Output (MIMO) Transmission
CN102904694A (zh) * 2011-07-27 2013-01-30 北京新岸线无线技术有限公司 码本反馈方法及装置
CN103580743A (zh) * 2012-08-10 2014-02-12 中兴通讯股份有限公司 小区间多天线协作系统干扰信道码本匹配方法和用户设备
CN106160938A (zh) * 2015-04-20 2016-11-23 中兴通讯股份有限公司 一种信道信息的获取方法和装置
CN107342798A (zh) * 2016-04-28 2017-11-10 电信科学技术研究院 一种确定码本的方法及装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101330359A (zh) * 2008-01-08 2008-12-24 上海交通大学 Mimo空分复用系统基于mmse准则的发送端优化方法及装置
US20110200081A1 (en) * 2010-02-17 2011-08-18 Research In Motion Limited System And Method For Channel Status Information Feedback In A Wireless Communications System That Utilizes Multiple-Input Multiple-Output (MIMO) Transmission
CN102904694A (zh) * 2011-07-27 2013-01-30 北京新岸线无线技术有限公司 码本反馈方法及装置
CN103580743A (zh) * 2012-08-10 2014-02-12 中兴通讯股份有限公司 小区间多天线协作系统干扰信道码本匹配方法和用户设备
CN106160938A (zh) * 2015-04-20 2016-11-23 中兴通讯股份有限公司 一种信道信息的获取方法和装置
CN107342798A (zh) * 2016-04-28 2017-11-10 电信科学技术研究院 一种确定码本的方法及装置

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