WO2019179222A1 - Procédé et dispositif de transmission d'informations de commande de liaison montante - Google Patents

Procédé et dispositif de transmission d'informations de commande de liaison montante Download PDF

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Publication number
WO2019179222A1
WO2019179222A1 PCT/CN2019/071424 CN2019071424W WO2019179222A1 WO 2019179222 A1 WO2019179222 A1 WO 2019179222A1 CN 2019071424 W CN2019071424 W CN 2019071424W WO 2019179222 A1 WO2019179222 A1 WO 2019179222A1
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WO
WIPO (PCT)
Prior art keywords
time
feedback time
control information
uplink control
terminal device
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PCT/CN2019/071424
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English (en)
Chinese (zh)
Inventor
刘晓峰
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中国信息通信研究院
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Filing date
Publication date
Application filed by 中国信息通信研究院 filed Critical 中国信息通信研究院
Publication of WO2019179222A1 publication Critical patent/WO2019179222A1/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
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • the present application relates to the field of wireless communications technologies, and in particular, to an uplink control information transmission method and device.
  • 5G As the latest generation of mobile communication technology, 5G's various extensions and applications based on 5G will gradually flourish. One important application is the use of unlicensed bands.
  • radio resources include radio resources in unlicensed bands and radio resources in licensed bands.
  • radio resources need to consider how various wireless communication systems can be shared in unlicensed bands in 5G technology in order to meet the needs of the current development of wireless communication technologies.
  • Sharing in unlicensed bands uses, for example, WIFI, LTE-based LAA technology, and the like.
  • LBT Listening Before Talk
  • the uplink information is transmitted according to the first listening and sending technology, that is, when the network device instructs the terminal device to perform uplink feedback at the specified time, the channel is The other system is occupied, so that the terminal device cannot feed back the uplink information to the network device at the specified time, and the network device cannot receive the uplink information fed back by the terminal device at the specified time. In this way, the network device cannot determine whether the terminal device correctly receives the downlink data, and thus has to re-transmit the downlink data to the terminal device, thereby causing waste of system resources.
  • the first listening and sending technology that is, when the network device instructs the terminal device to perform uplink feedback at the specified time, the channel is The other system is occupied, so that the terminal device cannot feed back the uplink information to the network device at the specified time, and the network device cannot receive the uplink information fed back by the terminal device at the specified time.
  • the network device cannot determine whether the terminal device correctly receives the downlink data, and thus has to re-transmit the downlink data to the terminal
  • the method and device for transmitting uplink control information provided by the embodiments of the present application are used to solve the problem of waste of system resources existing in the prior art.
  • the embodiment of the present application provides a method for transmitting uplink control information, including:
  • Determining a feedback time where the feedback time is used to indicate that the terminal device sends uplink control information to the network device according to the feedback time;
  • the embodiment of the present application further provides an uplink control information transmission method, including:
  • the embodiment of the present application further provides an uplink control information transmission device, including:
  • a processing unit configured to determine a feedback time, where the feedback time is used to indicate that the terminal device sends uplink control information to the network device according to the feedback time;
  • a sending unit configured to send the feedback time to the terminal device.
  • the embodiment of the present application further provides an uplink control information transmission device, including:
  • a receiving unit configured to receive a feedback time sent by the network device, where the feedback time is used to instruct the terminal device to send uplink control information to the network device according to the feedback time;
  • a sending unit configured to transmit uplink control information to the network device according to the feedback time.
  • the embodiment of the present application further provides an uplink control information transmission device, including at least one processor and a memory, where the memory stores a program, and is configured to perform the following steps by the at least one processor:
  • Determining a feedback time where the feedback time is used to indicate that the terminal device sends uplink control information to the network device according to the feedback time;
  • the embodiment of the present application further provides an uplink control information transmission device, including at least one processor and a memory, where the memory stores a program, and is configured to perform the following steps by the at least one processor:
  • the embodiment of the present application establishes a feedback mechanism between the network device and the terminal device, that is, the network device determines the feedback time, and sends the determined feedback time to the terminal device, so that the terminal device sends the uplink control information to the network device according to the feedback time.
  • the network device is notified whether the downlink data has been correctly received, thereby effectively avoiding the problem that the network device has to waste the system resources caused by sending the downlink data to the terminal device because the terminal device cannot correctly determine whether the terminal device correctly receives the downlink data, and at the same time, the terminal
  • the device can also flexibly implement feedback of uplink control information according to the feedback time sent by the network device, which effectively enhances the system robustness of the NR when the non-licensed frequency band is deployed independently.
  • FIG. 1 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of an uplink control information transmission device according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of an uplink control information transmission device according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a mobile communication system according to an embodiment of the present application.
  • this mechanism Based on the prior listening and post-issuing mechanism proposed in the prior art, in practical applications, this mechanism also brings about some problems that data cannot be guaranteed to be transmitted at a certain location. This problem makes performance impossible if existing 5G technology is used directly in unlicensed bands. Especially when the 5G NR-based design is deployed independently in the unlicensed frequency band, since the feedback information cannot be guaranteed to be transmitted in a fixed time, the performance of the NR-based system will be greatly reduced when the service in the unlicensed frequency band is busy.
  • the embodiment of the present application provides an uplink control information transmission method and device, and determines a feedback time, where the feedback time is used to instruct the terminal device to send uplink control information to the network device according to the feedback time; Sending the feedback time to the terminal device.
  • the network device determines the feedback time, and sends the determined feedback time to the terminal device, so that the terminal device sends the uplink control information to the network device according to the feedback time, thereby notifying the network device.
  • the terminal device can also The feedback time sent by the network device flexibly realizes the feedback of the uplink control information, which effectively enhances the system robustness of the NR when the unlicensed frequency band is deployed independently.
  • FIG. 1 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present disclosure.
  • the method can be as follows.
  • the executor of the embodiment of the present application may be a base station device or a network side device, which is not specifically limited herein. In the embodiment of the present application, they are collectively referred to as a network device.
  • Step 101 Determine a feedback time, where the feedback time is used to instruct the terminal device to send uplink control information to the network device according to the feedback time.
  • the network device before sending the downlink control information or the downlink data to the terminal device, determines a feedback time, where the feedback time can indicate the timing at which the terminal device sends the uplink control information to the network device, so that the network device can be effectively avoided. It is impossible to determine whether the terminal device correctly receives the downlink data and has to re-send the system resources caused by the downlink data to the terminal device.
  • the transmission of data in the unlicensed frequency band can ensure that the terminal device transmits uplink control information such as ACK/NACK to the network device at a certain location, and can ensure the possibility of multiple choices in the prior listening and post-sending technology. Therefore, the situation that the resource is not occupied by the network device and the uplink control information cannot be fed back to the network device in time is avoided.
  • the network device determines the busyness of the current carrier, and obtains a feedback time corresponding to the determined busyness of the current carrier according to a mapping relationship between the preset busyness and the feedback time.
  • the feedback time described in the embodiment of the present application may refer to a time point, may also refer to a time interval, and may also refer to multiple time points, and the form thereof is not specifically limited herein.
  • the feedback time includes at least one time point.
  • the multiple time points satisfy the time point continuous, or the plurality of time points satisfy the time point discontinuity.
  • the adjacent time points of the plurality of time points are equally spaced, or the adjacent time points of the plurality of time points are different. interval.
  • the network device may determine the feedback time for each time before sending the downlink data or the downlink control signaling to the terminal device; or establish the current communication connection with the terminal device (the communication connection can be understood here)
  • the feedback time is determined, and then the communication is performed.
  • the terminal device sends the uplink control information to the network device by default according to the determined feedback time.
  • the network device may first determine a feedback time (which may be referred to as a first feedback time) for the terminal device, and then the network device determines the carrier busyness.
  • a feedback time (second feedback time) is determined for it, which means that after receiving the first feedback time, if the terminal device has not received or has not received different feedback time afterwards, then Both send uplink control information according to the first feedback time. .
  • U is a positive integer, and represents the correlation time of the current service before service
  • i is a positive integer, denotes the i-th downlink data transmission
  • a i represents the i-th transmission data corresponding to the downlink carrier busy
  • B takes a value of 0 or 1.
  • the terminal device sends the uplink control information at the first selectable feedback time point, then the value of B is 1; otherwise, the B value is Is 0.
  • the following describes in detail how the network device determines the mapping relationship between busyness and feedback time.
  • the time slot corresponding to the carrier used for transmitting the uplink data is divided into different time segments, and the time segment includes at least one time point.
  • each subinterval may be the same or different.
  • M is a positive integer.
  • the obtained subintervals are sorted. Among them, the less the feedback time point, the higher the ranking; for the same number of feedback time, the smaller the feedback time interval, the higher the ranking.
  • mapping relationship between different sub-intervals and busyness is determined.
  • Step 102 Send the feedback time to the terminal device.
  • the feedback time is carried in the downlink control signaling and sent to the terminal device.
  • the feedback time is sent to the terminal device through high layer signaling.
  • Bit indication signaling where Round up.
  • the feedback time is used to indicate that the terminal device sends the uplink control information to the network device according to the feedback time, and sends the feedback time to the terminal device by using the technical solution provided by the embodiment of the present application.
  • the network device determines the feedback time, and sends the determined feedback time to the terminal device, so that the terminal device sends the uplink control information to the network device according to the feedback time, thereby notifying the network device.
  • the terminal device can also The feedback time sent by the network device flexibly realizes the feedback of the uplink control information, which effectively enhances the system robustness of the NR when the unlicensed frequency band is deployed independently.
  • FIG. 2 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present disclosure.
  • the method can be as follows.
  • the execution subject of the embodiment of the present application is a terminal device.
  • Step 201 Receive a feedback time sent by the network device, where the feedback time is used to instruct the terminal device to send uplink control information to the network device according to the feedback time.
  • Step 202 Transmit uplink control information to the network device according to the feedback time.
  • the mapping relationship between the busyness and the feedback time may be determined by negotiation between the network device and the terminal device, and the terminal device may also store the mapping relationship.
  • the terminal device receives the feedback time sent by the network device, if it is determined that the feedback time is not compatible with the busyness of the current carrier, the new feedback time may be determined according to the mapping relationship, and the determined new feedback is determined. The time informs the network device through high layer signaling or other means.
  • FIG. 3 is a schematic structural diagram of an uplink control information transmission device according to an embodiment of the present disclosure.
  • the device comprises: a processing unit 301 and a sending unit 302, wherein:
  • the processing unit 301 is configured to determine a feedback time, where the feedback time is used to indicate that the terminal device sends uplink control information to the network device according to the feedback time;
  • the sending unit 302 is configured to send the feedback time to the terminal device.
  • the processing unit 301 determines a feedback time, including:
  • a feedback time corresponding to the determined busyness of the current carrier is obtained.
  • the processing unit 301 determines a mapping relationship between the busyness level and the feedback time, including:
  • the processing unit 301 determines the current carrier busyness, including:
  • U is a positive integer, and represents the correlation time of the current service before service
  • i is a positive integer, denotes the i-th downlink data transmission
  • a i represents the i-th transmission data corresponding to the downlink carrier busy
  • B takes a value of 0 or 1.
  • the feedback time includes at least one point in time.
  • the feedback time includes a plurality of time points
  • the plurality of time points satisfy the time point continuous, or the plurality of time points satisfy the time point discontinuity.
  • the adjacent time points of the plurality of time points are equally spaced, or adjacent to the multiple time points The time points are not equal.
  • the sending unit 302 sends the feedback time to the terminal device, including:
  • the feedback time is sent to the terminal device through high layer signaling.
  • the device provided by the embodiment of the present disclosure may be implemented by using a software, or may be implemented by using a hardware, and is not specifically limited herein.
  • the device provided by the embodiment of the present application establishes a feedback mechanism between the network device and the terminal device, that is, the network device determines the feedback time, and sends the determined feedback time to the terminal device, so that the terminal device sends the uplink to the network device according to the feedback time.
  • the control information further informs the network device whether the downlink data has been correctly received, thereby effectively avoiding the problem that the network device has to waste the system resources caused by sending the downlink data to the terminal device because the terminal device cannot correctly determine whether the terminal device correctly receives the downlink data.
  • the terminal device can flexibly implement feedback of the uplink control information according to the feedback time sent by the network device, which effectively enhances the system robustness of the NR when the unlicensed frequency band is deployed independently.
  • the embodiment of the present application further provides an uplink control information transmission device, including at least one processor and a memory, where the memory stores a program, and is configured to perform the following steps by the at least one processor:
  • Determining a feedback time where the feedback time is used to indicate that the terminal device sends uplink control information to the network device according to the feedback time;
  • processor described in the embodiment of the present application further includes the functions described in the above embodiments, and details are not described herein again.
  • FIG. 4 is a schematic structural diagram of an uplink control information transmission device according to an embodiment of the present application.
  • the device includes: a receiving unit 401 and a sending unit 402, where:
  • the receiving unit 401 is configured to receive a feedback time sent by the network device, where the feedback time is used to indicate that the terminal device sends the uplink control information to the network device according to the feedback time;
  • the sending unit 402 is configured to transmit uplink control information to the network device according to the feedback time.
  • the embodiment of the present application further provides an uplink control information transmission device, including at least one processor and a memory, where the memory stores a program, and is configured to perform the following steps by the at least one processor:
  • processor described in the embodiment of the present application further includes the functions described in the above embodiments, and details are not described herein again.
  • FIG. 5 it is a schematic structural diagram of a mobile communication system according to an embodiment of the present application.
  • a network device and at least one terminal device are included in the mobile communication system.
  • the network device includes a data unit and a control unit; the terminal device includes a data unit and a control unit.
  • the data unit of the network device sends data to the terminal device, and the control unit of the network device sends control signaling to the terminal device, where the control unit further includes a feedback time determining unit, where the feedback time determining unit is configured to determine the feedback time.
  • the data unit of the terminal device is configured to receive data sent by the network device, and the control unit of the terminal device is configured to send uplink control information to the network device, that is, according to the feedback time sent by the network device control unit and the data unit receiving the data sent by the network device.
  • the network device feedback data is correct to receive ACK/NACK information.
  • embodiments of the present application can be provided as a method, apparatus (device), or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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

Abstract

L'invention concerne un procédé et un dispositif de transmission d'informations de commande de liaison montante, le procédé comprenant : la détermination d'un temps de rétroaction, le temps de rétroaction étant utilisé pour ordonner à un dispositif terminal d'envoyer des informations de commande de liaison montante à un dispositif de réseau conformément au temps de rétroaction ; et l'envoi du temps de rétroaction au dispositif terminal. Un mécanisme de rétroaction est établi entre un dispositif de réseau et un dispositif terminal, à savoir, le dispositif de réseau détermine un temps de rétroaction et envoie le temps de rétroaction déterminé au dispositif terminal pour que le dispositif terminal envoie des informations de commande de liaison montante au dispositif de réseau conformément au temps de rétroaction, ce qui permet de notifier au dispositif de réseau si des données de liaison descendante ont été correctement reçues, et d'éviter efficacement le problème des gaspillage de ressources système dû au fait que le dispositif de réseau doit ré-envoyer les données de liaison descendante au dispositif terminal parce qu'il ne peut pas déterminer si le dispositif terminal a reçu correctement les données de liaison descendante ; de plus, le dispositif terminal peut également renvoyer les informations de commande de liaison montante d'une manière flexible conformément au temps de rétroaction envoyé par le dispositif de réseau, ce qui permet d'améliorer efficacement la robustesse du système lorsqu'une nouvelle radio (NR) est déployée indépendamment sur une bande de fréquences sans licence.
PCT/CN2019/071424 2018-03-21 2019-01-11 Procédé et dispositif de transmission d'informations de commande de liaison montante WO2019179222A1 (fr)

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