WO2013181870A1 - Procédé et dispositif de traitement de démodulation de données et de planification de ressources de liaison descendante - Google Patents

Procédé et dispositif de traitement de démodulation de données et de planification de ressources de liaison descendante Download PDF

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Publication number
WO2013181870A1
WO2013181870A1 PCT/CN2012/077858 CN2012077858W WO2013181870A1 WO 2013181870 A1 WO2013181870 A1 WO 2013181870A1 CN 2012077858 W CN2012077858 W CN 2012077858W WO 2013181870 A1 WO2013181870 A1 WO 2013181870A1
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WO
WIPO (PCT)
Prior art keywords
data
terminal
scheduling
base station
downlink control
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Application number
PCT/CN2012/077858
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English (en)
Chinese (zh)
Inventor
余西
谢忠时
Original Assignee
中兴通讯股份有限公司
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Publication of WO2013181870A1 publication Critical patent/WO2013181870A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to the field of communications, and in particular to a data demodulation process, a downlink resource scheduling method, and an apparatus.
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • OFDM Orthogonal Frequency Division Multiplexing
  • FDMA Frequent Division Multiple Access
  • the main advantages of LTE are high peak rate, small system delay, and flexible bandwidth configuration.
  • 20MHz spectrum bandwidth can provide downlink 100Mbps, uplink 50Mbps peak rate, user plane internal unidirectional transmission delay less than 5ms, support flexible configuration of 1.25MHz to 20MHz bandwidth, can also use carrier aggregation technology to further improve cell capacity.
  • the base station notifies the terminal through different downlink control information (Downlink Control Information, DCI for short), and the DCI carries the resources occupied by a certain transmission.
  • DCI Downlink Control Information
  • the modulation mode and the retransmission mode and other information, the terminal can only demodulate the data at the corresponding time-frequency position and corresponding demodulation mode after solving the information.
  • the DCI format is sent in the control area, and the control area occupies at most the first 4 OFDM symbols in the time domain.
  • the scheduling unit is lms for LTE Frequency Division Duplex (FDD), that is, DCI is sent to the terminal every ms (except semi-static scheduling), and DCI transmission is also One or more symbols are required to be occupied, so that the physical downlink shared channel (Physical Downlink Shared Channel, PDSCH for short) is used.
  • FDD Frequency Division Duplex
  • Embodiments of the present invention provide a data demodulation process, a downlink resource scheduling method, and a device, to at least solve the technical problem that the PDSCH occupies less resources due to the frequent delivery of DCI to the terminal by the base station.
  • a data demodulation processing method including: receiving, by a terminal, downlink control information from a base station, where the downlink control information carries an indication that is used between subsequent designated scheduling periods The same data demodulation mode indication information; under the indication of the indication information, the terminal demodulates data received in a subsequent specified scheduling period according to the same data demodulation mode.
  • the foregoing terminal demodulates data received in a subsequent specified scheduling period according to the same data demodulation manner, and the method includes: the terminal demodulating data received in a subsequent specified scheduling period according to a current data demodulation manner.
  • the foregoing indication information is set in the following manner: setting a binding status field in the downlink control information, where when the binding status field is a predetermined value, indicating that the same data demodulation manner is adopted between subsequent designated scheduling periods . And when the base station determines that the remaining to-be-scheduled data is not less than the current scheduling data, setting the binding status field to the predetermined value.
  • the above binding status field occupies 1 bit.
  • the method further includes: when the terminal passes the verification result of the data in the subsequent specified scheduling period, the verification is performed. The successful result is fed back to the base station, otherwise the result of the verification failure is fed back to the base station.
  • a method for scheduling a downlink resource including: the base station setting, in the downlink control information, indication information indicating that the same data demodulation mode is adopted between subsequent designated scheduling periods; The downlink control information carrying the indication information is sent to the terminal. The above indication information indicates that the data is demodulated according to the current data demodulation method.
  • the foregoing indication information is set in the following manner: setting a binding status field in the downlink control information, where when the binding status field is a predetermined value, indicating that the same data demodulation manner is adopted between subsequent designated scheduling periods .
  • the base station sets the binding status field to the predetermined value when determining that the remaining to-be-scheduled data is not less than the current scheduling data.
  • a data demodulation processing apparatus which is located in a terminal, and includes: a receiving module, configured to receive downlink control information from a base station, where the downlink control information carries Instructing to indicate the same data demodulation mode between subsequent designated scheduling periods; The block is configured to demodulate data received in a subsequent specified scheduling period according to the same data demodulation manner under the indication of the indication information. The demodulation module is further configured to demodulate data received in a subsequent specified scheduling period according to a current data demodulation manner.
  • a downlink resource scheduling apparatus which is located in a base station, and includes: a setting module, configured to set, in the downlink control information, to indicate that the same data demodulation is adopted between subsequent designated scheduling periods.
  • the indication information of the mode the sending module is configured to send the downlink control information carrying the indication information to the terminal, and the terminal uses the same demodulation mode for the subsequent specified scheduling period according to the received indication information from the base station.
  • the technical means for performing the demodulation solves the technical problem that the PDSCH occupies less resources due to the frequent delivery of the DCI to the terminal by the base station, thereby reducing the resources occupied by the DCI and improving the downlink shared channel. Time-frequency resources used.
  • FIG. 1 is a flowchart of a method for demodulating data according to Embodiment 1 of the present invention
  • FIG. 2 is a block diagram showing a structure of a data demodulation processing apparatus according to Embodiment 1 of the present invention
  • FIG. 4 is a structural block diagram of a downlink resource scheduling apparatus according to Embodiment 2 of the present invention
  • FIG. 1 is a flowchart of a method for demodulating data according to Embodiment 1 of the present invention
  • FIG. 2 is a block diagram showing a structure of a data demodulation processing apparatus according to Embodiment 1 of the present invention
  • FIG. 4 is a structural block diagram of a downlink resource scheduling apparatus according to Embodiment 2 of the present invention
  • FIG. 1 is a flowchart of a method of demodulating data according to an embodiment of the present invention. As shown in FIG. 1, the method includes: Step S102: A terminal receives downlink control information from a base station, where the downlink control information carries indication information indicating that the same data demodulation mode is adopted between subsequent designated scheduling periods.
  • Step S104 Under the indication of the indication information, the terminal demodulates the data received in the subsequent specified scheduling period according to the same data demodulation manner. Through the foregoing processing, the terminal can demodulate the data received in the subsequent specified scheduling period according to the foregoing information demodulation manner according to the foregoing indication information, so that the demodulation mode in the subsequent specified scheduling period can only be implemented by using the indication information.
  • the method is notified to the terminal, and the DCI is not required to be sent to the terminal each time, thereby reducing the resources occupied by the DCI and improving the time-frequency resources that can be used by the downlink shared channel.
  • the same demodulation mode may be a pre-defined demodulation mode, or may be a demodulation mode currently used.
  • the terminal performs data received in a subsequent specified scheduling period according to the current data demodulation mode. demodulation.
  • the foregoing indication information may be implemented by adding a field to the downlink control information, and specifically, may be set in the following manner: setting a binding status field in the downlink control information, where when the binding status field is a predetermined value , indicating that the same data demodulation method is adopted between subsequent designated scheduling periods.
  • a condition may be set for the binding state field. For example, when the base station determines that the remaining to-be-scheduled data is not less than the current scheduling data, the binding state field is set to the predetermined value.
  • the binding state field may occupy 1 bit in this embodiment.
  • the binding field is 1 (that is, the predetermined value is 1)
  • the binding status field is 0, the received data is demodulated according to an existing data demodulation processing method, for example, the data is demodulated according to each received DCI.
  • the following processing procedure may also be included: When the demodulation result of the data in the period is verified, the result of the verification success is fed back to the base station, otherwise the result of the verification failure is fed back to the base station.
  • a demodulation processing device for data is provided, which is located in the terminal, and is used to implement the foregoing embodiments and preferred embodiments.
  • the module to be explained.
  • the term "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.
  • 2 is a block diagram showing the structure of a data demodulation processing apparatus according to an embodiment of the present invention. As shown in FIG. 2, the device includes: a receiving module 20, connected to the demodulation module 22, configured to receive downlink control information from a base station, where the downlink control information carries an indication to be adopted between subsequent designated scheduling periods.
  • the same data demodulation mode indication information; the demodulation module 22 is configured to demodulate the data received in the subsequent specified scheduling period according to the same data demodulation method under the instruction of the indication information.
  • the function implemented by each module in the foregoing apparatus enables the terminal to demodulate the data received in the subsequent specified scheduling period according to the indication information according to the foregoing indication information, so that the solution can be implemented in the subsequent specified scheduling period.
  • the mode is only notified to the terminal by means of the indication information, and the DCI is not required to be sent to the terminal each time, thereby reducing the resources used for transmitting the DCI and improving the time-frequency resources that can be used by the downlink shared channel.
  • the same data demodulation method can adopt the current data demodulation mode of the terminal.
  • the demodulation module 22 is further configured to demodulate the data received in the subsequent specified scheduling period according to the current data demodulation mode.
  • Embodiment 2 The scheduling method in this embodiment may be based on a demodulation processing scheme of the foregoing data
  • FIG. 3 is a flowchart of a scheduling method of a downlink resource according to an embodiment of the present invention. As shown in FIG. 3, the method includes: Step S302: The base station sets, in the downlink control information, indication information indicating that the same data demodulation mode is used between the subsequent designated scheduling periods. Step S304, the base station sends the foregoing information to the terminal. Indicates downlink control information of the information.
  • the base station sends the indication information indicating that the same data demodulation mode is adopted between the subsequent designated scheduling periods, so that the terminal can specify the scheduling period according to the same data demodulation mode according to the indication information.
  • the received data is demodulated. Therefore, the demodulation mode in the subsequent specified scheduling period is notified to the terminal only by means of the indication information, and the DCI is not required to be sent to the terminal each time, thereby reducing the DCI occupation. Resources, improve the time-frequency resources available for the downlink shared channel.
  • the indication information may indicate that the data is demodulated in accordance with the current data demodulation method.
  • the foregoing indication information may be set by: setting a binding status field in the downlink control information, where, when the binding status field is a predetermined value, indicating a subsequent specified scheduling period The same data demodulation method is used.
  • the base station sets the binding status field to the predetermined value when determining that the remaining to-be-scheduled data is not less than the current scheduling data.
  • a scheduling device for a downlink resource is further provided, where the device is located in a base station, and is used to implement the scheduling method of the downlink resource.
  • FIG. 4 is a structural block diagram of a scheduling apparatus for downlink resources according to an embodiment of the present invention. As shown in FIG.
  • the apparatus includes: a setting module 40, connected to the sending module 42, configured to set, in the downlink control information, indication information indicating that the same data demodulation mode is adopted between subsequent designated scheduling periods; the sending module 42 The downlink control information carrying the indication information is sent to the terminal.
  • the scheduling device of the downlink resource can also reduce the resources used for transmitting the DCI and improve the time-frequency resources that can be used by the downlink shared channel.
  • LTE FDD will be described as an example.
  • the scheduling unit is lms, that is, DCI is sent to the terminal every ms (except semi-static scheduling), and DCI transmission also needs to occupy one or more symbols, thus The resources occupied by the downlink shared channel (PDSCH) are reduced.
  • the following embodiments provide an LTE FDD downlink binding scheduling method, that is, two downlink scheduling time units (but not limited to two) are bound together to serve a terminal, which reduces resources occupied by DCI and improves time-frequency of a downlink shared channel. Resources, thereby increasing downlink downlink rate downlink time-frequency resource utilization.
  • Embodiment 3 An LTE FDD downlink binding method provided by this embodiment includes the following processing steps: Step 1: The base station determines a DCI format allocated to a terminal according to a resource allocation manner and a transmission mode, and according to whether there is enough remaining data to be scheduled. (The remaining data to be scheduled is greater than or equal to the current scheduling data), and the binding in the DCI is determined. Set the value of the (bBundled) field. When there is still data to be scheduled at the next scheduling time, bBundled is set to 1, otherwise it is set to 0. Step 2: After demodulating the DCI, the terminal parses the resource allocation information and performs demodulation of the downlink data.
  • Step 3 The terminal determines, according to the value of bBundled in the DCI information demodulated in the previous step, whether the data needs to be demodulated in the next scheduling period.
  • bBundled is 1, it indicates that the data of the same modulation mode is to be parsed at the same time-frequency position in the next scheduling period, and correct demodulation is implemented without DCI indication. Otherwise, the message data needs to be demodulated according to the new DCI indication.
  • Step 4 The data CRC demodulated by the terminal according to the multiple binding periods is fed back to the base station. If the demodulated data CRC of the binding period does not pass, NACK is fed back, otherwise the ACK is fed back.
  • the transmission of DCI can be reduced and the utilization of downlink resources can be improved without affecting the function of the existing system.
  • the transmission of the DCI can be reduced, and the time-frequency resources that can be used by the downlink shared channel are improved, thereby improving the downlink throughput.
  • Embodiment 4 in order to reduce the downlink DCI transmission, a method of binding two downlink scheduling periods is adopted, and by adding a bit bBundled in the DCI format, whether to adopt a downlink binding scheduling method, so that the terminal is in the second The scheduling period can still be correctly demodulated without receiving DCI.
  • the downlink resource scheduling method in this embodiment includes the following processing steps: Step S502: The process starts; Step S504, the base station determines a DCI format adopted by the downlink transmission. In step S506, the base station determines whether there is enough remaining data to be scheduled. If yes, the process goes to step S508, and if no, the process goes to step S510. In step S508, bBundled is set to 1, and the process goes to step S512. In step S510, bBundled is set to 0, and the process proceeds to step S512.
  • Step S512 the terminal performs downlink data demodulation according to the DCI format, that is, demodulates the DCI.
  • Step S514 the terminal determines whether bBundled is 1 in the DCI format, and if yes, proceeds to step S516, otherwise, proceeds to step S518.
  • Step S520 feeding back ACK/NACK according to the two data demodulation results.
  • Step S522 ending.
  • software is also provided for performing the technical solutions described in the above embodiments and preferred embodiments.
  • a storage medium is provided, the software being stored, including but not limited to: an optical disk, a floppy disk, a hard disk, a rewritable memory, and the like.
  • modules or steps of the present invention can be implemented by a general computing system, which can be concentrated on a single computing system or distributed in a network composed of multiple computing systems. Alternatively, they may be implemented by program code executable by the computing system, such that they may be stored in the storage system by the computing system and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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

Abstract

L'invention porte sur un procédé et un dispositif de traitement de démodulation de données et de planification de ressources de liaison descendante. Le procédé de traitement de démodulation comprend les opérations suivantes : un terminal reçoit des informations de commande de liaison descendante (DCI) en provenance d'une station de base, les informations de commande de liaison descendante véhiculant des informations d'instruction qui indiquent que le même mode de démodulation de données est utilisé durant la période de planification désignée subséquente; et selon l'instruction des informations d'instruction, le terminal démodule les données reçues durant la période de planification désignée subséquente conformément au même mode de démodulation de données. L'adoption de la solution technique susmentionnée résout les problèmes techniques dans l'état antérieur de la technique, par exemple, moins de ressources sont occupées par le PDSCH étant donné qu'une station de base envoie fréquemment des DCI à un terminal, ce qui réduit les ressources occupées par envoi de DCI et améliore les ressources temps-fréquence disponibles pour un canal partagé de liaison descendante.
PCT/CN2012/077858 2012-06-05 2012-06-29 Procédé et dispositif de traitement de démodulation de données et de planification de ressources de liaison descendante WO2013181870A1 (fr)

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CN2012101828551A CN102710375A (zh) 2012-06-05 2012-06-05 数据的解调处理、下行资源的调度方法及装置
CN201210182855.1 2012-06-05

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CN104995981A (zh) * 2013-05-17 2015-10-21 富士通株式会社 下行数据的解调方法、装置和系统
CN106656894A (zh) * 2015-10-30 2017-05-10 中兴通讯股份有限公司 一种发送增强物理下行链路控制信道的方法和装置

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CN102137504A (zh) * 2011-04-12 2011-07-27 电信科学技术研究院 一种调度多子帧传输的方法及装置
CN102215590A (zh) * 2010-04-12 2011-10-12 中兴通讯股份有限公司 一种调度方法及系统
CN102325377A (zh) * 2011-05-24 2012-01-18 电信科学技术研究院 一种资源调度指示方法及装置
WO2012019361A1 (fr) * 2010-08-13 2012-02-16 富士通株式会社 Procédé et dispositif pour une transmission d'informations de contrôle sur la liaison descendante, procédé et dispositif pour une réception d'informations de contrôle sur la liaison descendante, terminal, station de base et système de communication

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101646224A (zh) * 2008-08-06 2010-02-10 大唐移动通信设备有限公司 下行控制信息处理方法和系统以及基站设备和终端设备
CN102215590A (zh) * 2010-04-12 2011-10-12 中兴通讯股份有限公司 一种调度方法及系统
WO2012019361A1 (fr) * 2010-08-13 2012-02-16 富士通株式会社 Procédé et dispositif pour une transmission d'informations de contrôle sur la liaison descendante, procédé et dispositif pour une réception d'informations de contrôle sur la liaison descendante, terminal, station de base et système de communication
CN102137504A (zh) * 2011-04-12 2011-07-27 电信科学技术研究院 一种调度多子帧传输的方法及装置
CN102325377A (zh) * 2011-05-24 2012-01-18 电信科学技术研究院 一种资源调度指示方法及装置

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