WO2018201829A1 - 一种传输方法、终端设备及基站 - Google Patents

一种传输方法、终端设备及基站 Download PDF

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Publication number
WO2018201829A1
WO2018201829A1 PCT/CN2018/081161 CN2018081161W WO2018201829A1 WO 2018201829 A1 WO2018201829 A1 WO 2018201829A1 CN 2018081161 W CN2018081161 W CN 2018081161W WO 2018201829 A1 WO2018201829 A1 WO 2018201829A1
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Prior art keywords
cbg
control channel
downlink control
indication
terminal device
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PCT/CN2018/081161
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English (en)
French (fr)
Inventor
高雪娟
托尼
郑方政
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电信科学技术研究院有限公司
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Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=64016436&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2018201829(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 电信科学技术研究院有限公司 filed Critical 电信科学技术研究院有限公司
Priority to US16/611,202 priority Critical patent/US11057923B2/en
Priority to JP2019560723A priority patent/JP6917475B2/ja
Priority to EP18795185.0A priority patent/EP3621228B1/en
Priority to KR1020197036016A priority patent/KR102334935B1/ko
Publication of WO2018201829A1 publication Critical patent/WO2018201829A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607Details of the supervisory signal
    • H04L1/1614Details of the supervisory signal using bitmaps
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027Scheduling of signalling, e.g. occurrence thereof
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607Details of the supervisory signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867Arrangements specially adapted for the transmitter end
    • H04L1/1896ARQ related signaling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055Physical resource allocation for ACK/NACK
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02Data link layer protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08Upper layer protocols

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a transmission method, a terminal device, and a base station.
  • a Physical Downlink Shared CHannel (PDSCH) and a Physical Uplink Shared CHannel (PUSCH) are respectively used for carrying downlink data transmission and uplink data transmission.
  • Each transmission is in the form of a Transport Block (TB).
  • TB Transport Block
  • One PDSCH/PUSCH channel can support 1 or 2 TB transmissions depending on the configured transmission mode. For example, in the following line data transmission, after receiving the PDSCH, the terminal needs to perform positive acknowledgment (ACK)/Non-ACKnowledgement (NACK) feedback for the TB transmitted in the PDSCH.
  • ACK positive acknowledgment
  • NACK Non-ACKnowledgement
  • the ACK/NACK feedback is performed for the TB, that is, when the spatial combining is not used, each TB corresponds to 1-bit ACK/NACK feedback information for indicating whether the reception of the TB is correct; for configuring the PDSCH of the multi-TB transmission and using space
  • the ACK/NACK feedback information corresponding to each TB carried in one PDSCH needs to be logically ANDed to obtain 1-bit ACK/NACK feedback information.
  • Uplink data transmission is similar.
  • a TB needs to be divided into K code blocks (CBs), and each CB is separately encoded and Cyclic Redundancy Check (CRC) is added.
  • CRC Cyclic Redundancy Check
  • the encoded CBs are cascaded for mapping and transmission. Since each CB is independently coded and contains CRC, virtually every CB can generate ACK/NACK feedback information, but if ACK/NACK feedback is performed for each CB, one TB needs to correspond to K-bit ACK/NACK. Feedback information, the amount of feedback is large.
  • 5G NR fifth-generation wireless communication systems
  • ITU International Telecommunication Union
  • 3GPP 3rd Generation Partnership Project
  • 5G NR fifth-generation wireless communication systems
  • the 5G system supports more and complex data transmission, and requires mechanisms to improve system transmission efficiency.
  • the TB-based transmission and ACK/NACK feedback mechanism applied to the LTE system is no longer applicable to the 5G NR system.
  • the embodiments of the present application provide a transmission method, a terminal device, and a base station, which are used to solve the technical problem that the method for retransmission and ACK/NACK feedback based on CBG is not supported in the prior art.
  • the embodiment of the present application provides a transmission method, which is applied to a terminal device, where the transmission method includes: the terminal device receives a downlink control channel; and the terminal device acquires a first indication from the downlink control channel.
  • the first indicator field is used to indicate whether each CBG in the corresponding code block group CBG in the initial transmission of the TB needs to be retransmitted.
  • the first indication field includes A*M bit indication information, and each TB corresponds to M-bit indication information, and each of the M-bit information corresponds to one CBG in an initial transmission of one TB, and is used for Determining whether the one CBG is retransmitted; wherein the M is a number of CBGs that are divided or defined by one TB, and the A is a number of TBs included in a shared channel transmission, where the M A is an integer greater than or equal to 1.
  • the method before the acquiring, by the terminal device, the first indication domain from the downlink control channel, the method further includes: determining, by the terminal device, whether the downlink control channel includes the first indication domain or the first indication domain is it effective.
  • the determining, by the terminal device, whether the downlink control channel includes the first indicator domain or the first indicator domain is valid specifically:
  • the downlink control channel When it is determined that the downlink control channel is used for scheduling retransmission, determining that the downlink control channel includes the first indication domain or the first indication domain is valid, when determining that the downlink control channel is used for scheduling initial transmission Determining that the downlink control channel does not include the first indication domain or the first indicator domain is invalid; or the downlink control channel is used for scheduling retransmission and/or scheduling initial transmission of the M CBGs. .
  • the downlink control channel includes a second indication field, where the second indication field is used to indicate whether the first indication domain exists or whether the first indication domain is valid, and the terminal device is configured according to the second indication. Determining whether the first indication domain exists or indicating whether the first indication domain is valid; or
  • the downlink control channel includes a third indication field, where the third indication field is used to indicate whether the terminal device supports CBG-based transmission, and when indicating support, determining to include the first indication domain or the first Indicate that the domain is valid, otherwise, it is determined that the first indicator domain is not included or the first indicator domain is invalid; or
  • Receiving high layer signaling determining, according to the configuration information in the high layer signaling, whether the terminal device supports CBG-based transmission, and determining, if the support is determined, that the first indication domain or the first indication domain is valid, otherwise Determining that the first indicator domain is not included or the first indicator domain is invalid.
  • the terminal device when the terminal device determines that all the CBGs are new transmissions according to the first indication field, the terminal device reports an NDI reverse state to the MAC layer; when the terminal device is configured according to the first indication When the domain determines that at least one CBG is retransmitted, the terminal device reports that the NDI is not reversed to the MAC layer.
  • the method before the receiving, by the terminal device, the downlink control channel, the method further includes:
  • the terminal device receives a downlink control channel including the first indication domain.
  • the method further includes:
  • the terminal device generates M*K-bit ACK/NACK feedback information for each TB, and each K-bit corresponds to one CBG, and the K-bit ACK/NACK feedback information corresponding to each CBG is in the order of CBG corresponding to the initial transmission of one TB. Sorting, or according to the feedback information corresponding to the CBG actually received, the feedback information of the complement is ranked later, or the feedback information corresponding to the actually received CBG is ranked, and the feedback information of the complement is ranked in the front; If the downlink control channel schedules retransmission of a part of the CBGs in the CBG corresponding to the initial transmission of the TB, generating a NACK as the complement information for the CBG locations that are not retransmitted;
  • the terminal device generates A*K-bit ACK/NACK feedback information, where each K-bit corresponds to one CBG, and the A is the number of transmitted CBGs scheduled by the downlink control channel;
  • K is a pre-agreed or configured value greater than or equal to 1.
  • the embodiment of the present application provides a terminal device, where the foregoing transmission method is applicable, where the terminal device includes:
  • a first receiving module configured to receive a downlink control channel
  • an acquiring module configured to obtain, from the downlink control channel, a first indication field, where the first indication field is used to indicate whether each CBG in the corresponding code block group CBG in the initial transmission of the TB needs to be retransmitted.
  • the first indication field includes A*M bit indication information, and each TB corresponds to M-bit indication information, and each of the M-bit information corresponds to one CBG in an initial transmission of one TB, and is used for Determining whether the one CBG is retransmitted; wherein the M is a number of CBGs that are divided or defined by one TB, and the A is a number of TBs included in a shared channel transmission, where the M A is an integer greater than or equal to 1.
  • the terminal device further includes:
  • a first determining module configured to determine whether the downlink control channel includes the first indication domain or the first indication domain is valid before acquiring the first indication domain from the downlink control channel.
  • the first determining module is specifically configured to:
  • the downlink control channel When it is determined that the downlink control channel is used for scheduling retransmission, determining that the downlink control channel includes the first indication domain or the first indication domain is valid, when determining that the downlink control channel is used for scheduling initial transmission Determining that the first indication domain is not included in the downlink control channel or the first indicator domain is invalid; or
  • the downlink control channel includes a second indication field, where the second indication field is used to indicate whether the first indication domain exists or whether the first indication domain is valid, and the terminal device is configured according to the second indication. Determining whether the first indication domain exists or indicating whether the first indication domain is valid; or
  • the downlink control channel includes a third indication field, where the third indication field is used to indicate whether the terminal device supports CBG-based transmission, and when indicating support, determining to include the first indication domain or the first Indicate that the domain is valid, otherwise, it is determined that the first indicator domain is not included or the first indicator domain is invalid; or
  • Receiving high layer signaling determining, according to the configuration information in the high layer signaling, whether the terminal device supports CBG-based transmission, and determining, if the support is determined, that the first indication domain or the first indication domain is valid, otherwise Determining that the first indicator domain is not included or the first indicator domain is invalid.
  • the terminal device further includes:
  • a first reporting module configured to report an NDI inversion status to the MAC layer when the terminal device determines that all CBGs are new transmissions according to the first indication field
  • the second reporting module is configured to report the NDI unreversed state to the MAC layer when the terminal device determines that the at least one CBG is retransmitted according to the first indication field.
  • the terminal device further includes:
  • a second receiving module configured to receive high layer signaling before the terminal device receives the downlink control channel
  • a second determining module configured to determine, according to configuration information in the high layer signaling, whether the terminal device supports CBG-based transmission
  • a third receiving module configured to: if it is determined that the terminal device supports CBG-based transmission, the terminal device receives a downlink control channel that includes the first indication domain.
  • the terminal device further includes:
  • a feedback module configured to generate M*K-bit ACK/NACK feedback information for each TB when the terminal device performs ACK/NACK feedback on the CBG scheduled by the downlink control channel, where each K-bit corresponds to one CBG, and each The K-bit ACK/NACK feedback information corresponding to the CBGs are sorted according to the order of the CBGs corresponding to the initial transmission of one TB, or the feedback information corresponding to the actually received CBG is ranked first, and the feedback information of the complement bits is ranked later, or According to the feedback information corresponding to the actually received CBG, the feedback information of the complement is ranked first; if the downlink control channel schedules the retransmission of part of the CBG in the CBG corresponding to the initial transmission of the TB, then Generating a NACK as a complement information for a CBG location that has not been retransmitted;
  • the embodiment of the present application further provides a transmission method, which is applied to a base station, where the transmission method includes: the base station sends a downlink control channel, where the downlink control channel includes a first indication domain, and the first indication The field is used to indicate whether each CBG in the corresponding code block group CBG in the initial transmission of the TB needs to be retransmitted.
  • the first indication field includes A*M bit indication information, and each TB corresponds to M bit indication information, where each 1 bit of the M bit information corresponds to one CBG in an initial transmission of one TB, and is used for Determining whether the one CBG is retransmitted; wherein the M is a number of CBGs that are divided or defined by one TB, and the A is a number of TBs included in a shared channel transmission, where the M A is an integer greater than or equal to 1.
  • the method before the sending, by the base station, the downlink control channel, the method further includes:
  • the base station determines whether the downlink control channel includes whether the first indication domain or the first indication domain is valid.
  • the determining, by the base station, whether the downlink control channel includes the first indicator domain or the first indicator domain is valid specifically:
  • the downlink control channel When it is determined that the downlink control channel is used for scheduling retransmission, determining that the downlink control channel includes the first indication domain or the first indication domain is valid, when determining that the downlink control channel is used for scheduling initial transmission Determining that the first indication domain is not included in the downlink control channel or the first indicator domain is invalid; or
  • Determining whether the terminal device supports CBG-based transmission Determining whether the terminal device supports CBG-based transmission, and setting a third indication field in the downlink control channel, where the third indication field is used to indicate whether the terminal device supports CBG-based transmission, when indicating support Determining that the first indicator domain or the first indicator domain is valid, otherwise determining that the first indicator domain is not included or the first indicator domain is invalid; or
  • Determining whether the terminal device supports the CBG-based transmission and sending the high-level signaling to notify the terminal device whether the CBG-based transmission is supported. If the support is determined, determining whether the first indication domain or the first indication domain is valid, otherwise Determining that the first indicator domain is not included or the first indicator domain is invalid.
  • the method before the sending, by the base station, the downlink control channel, the method further includes:
  • the base station sends a downlink control channel including the first indication domain.
  • the method when receiving the ACK/NACK feedback performed by the terminal device on the CBG scheduled by the downlink control channel, the method further includes:
  • the base station determines that the terminal device generates M*K-bit ACK/NACK feedback information for each TB, and each K-bit corresponds to one CBG, and the K-bit ACK/NACK feedback information corresponding to each CBG corresponds to the initial transmission of one TB.
  • the order of the CBGs is sorted, or the feedback information corresponding to the CBG actually received is ranked first, and the feedback information of the complement bits is listed later, or the feedback information corresponding to the actually received CBG is ranked later, and the feedback information of the complement is listed. If the downlink control channel schedules retransmission of a portion of the CBGs in the CBG corresponding to the initial transmission of the TB, generating a NACK as the complement information for the CBG locations that are not retransmitted;
  • the embodiment of the present application further provides a base station, where the transmission method in the foregoing third aspect is applicable, the base station includes: a sending module, configured to send a downlink control channel, where the downlink control channel includes a first indication domain The first indication field is used to indicate whether each CBG in the corresponding code block group CBG in the initial transmission of the TB needs to be retransmitted.
  • the first indication field includes A*M bit indication information, and each TB corresponds to M-bit indication information, and each of the M-bit information corresponds to one CBG in an initial transmission of one TB, and is used for Determining whether the one CBG is retransmitted; wherein the M is a number of CBGs that are divided or defined by one TB, and the A is a number of TBs included in a shared channel transmission, where the M A is an integer greater than or equal to 1.
  • the base station further includes:
  • a first determining module configured to determine, before the base station sends the downlink control channel, whether the downlink control channel includes the first indication domain or the first indication domain is valid.
  • the first determining module is specifically configured to:
  • the downlink control channel When it is determined that the downlink control channel is used for scheduling retransmission, determining that the downlink control channel includes the first indication domain or the first indication domain is valid, when determining that the downlink control channel is used for scheduling initial transmission Determining that the first indication domain is not included in the downlink control channel or the first indicator domain is invalid; or
  • Determining whether the terminal device supports CBG-based transmission Determining whether the terminal device supports CBG-based transmission, and setting a third indication field in the downlink control channel, where the third indication field is used to indicate whether the terminal device supports CBG-based transmission, when indicating support Determining that the first indicator domain or the first indicator domain is valid, otherwise determining that the first indicator domain is not included or the first indicator domain is invalid; or
  • Determining whether the terminal device supports the CBG-based transmission and sending the high-level signaling to notify the terminal device whether the CBG-based transmission is supported. If the support is determined, determining whether the first indication domain or the first indication domain is valid, otherwise Determining that the first indicator domain is not included or the first indicator domain is invalid.
  • the sending module is further configured to:
  • the base station Before the base station sends the downlink control channel, sending high layer signaling, where the high layer signaling is used to notify the terminal device whether to support CBG-based transmission;
  • the base station transmits a downlink control channel including the first indication domain.
  • the base station further includes:
  • a second determining module configured to: when receiving the ACK/NACK feedback performed by the terminal device on the CBG scheduled by the downlink control channel, determine that the terminal device generates M*K-bit ACK/NACK feedback information for each TB
  • Each K-bit corresponds to one CBG
  • the K-bit ACK/NACK feedback information corresponding to each CBG is sorted according to the order of CBG corresponding to the initial transmission of one TB, or the feedback information corresponding to the actually received CBG is ranked in front, The feedback information of the bit is ranked later, or the feedback information corresponding to the actually received CBG is ranked, and the feedback information of the complement is ranked first; if the downlink control channel schedules the CBG corresponding to the initial transmission of a TB Retransmission of part of the CBG, and generating a NACK as a complement information for the CBG location that is not retransmitted;
  • each K-bit corresponds to one CBG, where A is the number of transmitted CBGs scheduled by the downlink control channel; where K is pre-agreed or configured A value greater than or equal to 1.
  • a fifth embodiment of the present application provides a computer apparatus, where the apparatus includes a processor, and the processor is configured to implement the method as described in Embodiment 1 and Embodiment 3 when executing a computer program stored in a memory. A step of.
  • a sixth embodiment of the present application provides a computer readable storage medium having stored thereon a computer program, the computer program being executed by a processor to implement the methods as described in Embodiment 1 and Embodiment 3 step.
  • the seventh embodiment of the present application provides a transmission apparatus, including:
  • a memory for storing program instructions
  • a processor configured to invoke a program instruction stored in the memory, and execute according to the obtained program:
  • the eighth embodiment of the present application provides a transmission apparatus, including:
  • a memory for storing program instructions
  • a processor configured to invoke a program instruction stored in the memory, and execute according to the obtained program:
  • the downlink control channel includes a first indication field, where the first indication field is used to indicate whether each CBG in the corresponding code block group CBG in the initial transmission of the TB needs to be retransmitted.
  • the terminal device receives the downlink control channel, and then acquires a first indication field from the downlink control channel, where the first indication field is used to indicate the corresponding code block group CBG in the initial transmission of the TB.
  • FIG. 1 is a schematic flowchart of a transmission method applied to a terminal device according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of a first indication field corresponding to each TB being adjacent to one indication domain in the embodiment of the present application;
  • FIG. 3 is a schematic diagram of a first indication domain corresponding to each TB in each embodiment of the present application as two indication domains;
  • FIG. 4 is a schematic block diagram of a terminal device in an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a transmission device on a terminal side according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a network side transmission apparatus according to an embodiment of the present application.
  • CBG Code Block Group
  • K CBs can be divided into multiple CBGs according to certain rules, each CBG. It can contain only one CB, or it can contain K CBs (ie one TB).
  • the feedback information of the terminal to one CBG transmission may be NACK, and the base station understands as ACK, or vice versa.
  • the terminal and the base station have inconsistent understandings of the retransmitted CBGs, resulting in a false Hybrid Auto Repeat reQuest (HARQ) merge.
  • HARQ Hybrid Auto Repeat reQuest
  • the transmission method in the embodiment of the present application may be applied to a terminal device, which may be a user equipment (User Equipment, UE) such as a mobile phone or a computer, and specifically, which terminal device, which is not specifically limited in this application.
  • a terminal device which may be a user equipment (User Equipment, UE) such as a mobile phone or a computer, and specifically, which terminal device, which is not specifically limited in this application.
  • UE User Equipment
  • the transmission method in the embodiment of the present application may be, but is not limited to, being applied in a 5G NR system, and the method is also applicable to other systems, such as an LTE system.
  • the words "first, second, third" in the embodiments of the present application are only for convenience of distinction and are not intended to be used in any limitation.
  • an embodiment of the present application provides a transmission method, which is applied to a terminal device, and the process of the transmission method may be described as follows:
  • the terminal device receives a downlink control channel.
  • the terminal device acquires a first indication field from the downlink control channel, where the first indication field is used to indicate whether each CBG in the corresponding code block group CBG in the initial transmission of the TB needs to be retransmitted.
  • the first indication field may be used to indicate which CBGs in the CBGs that are divided in the initial transmission of one TB are included in the shared channel scheduled by the downlink control channel for retransmission.
  • the transmission method of the embodiment of the present application may further include: determining, by the terminal device, whether the downlink control channel includes the first indication domain or the first indication domain is valid.
  • the first indication field is valid, and the terminal device needs to read the first indication field, and then performs a corresponding operation according to the indication of the first indication field; and the first indication field is invalid, and the first indication is that the first indication field exists in the downlink control channel.
  • the terminal device can assume that the downlink control channel includes the M indicator or the A*M bit first indication field when receiving the downlink control channel, but does not pay attention to the first Indicates the specific content of the domain, and may not parse the bit status indicated by this part.
  • the terminal device may include, according to when the downlink control channel is used for scheduling retransmission, the downlink control channel includes the first indication domain, and when the downlink control channel is used for scheduling initial transmission, The downlink control channel does not include the first indication field, that is, the downlink control channel used for scheduling retransmission and initial transmission uses different Downlink Control Information (DCI) format.
  • DCI Downlink Control Information
  • the determining, by the terminal device, whether the downlink control channel includes the first indicator domain or the first indicator domain is valid is not limited to the following manners:
  • Manner 1 When determining that the downlink control channel is used for scheduling retransmission, determining that the downlink control channel includes the first indicator domain or the first indicator domain is valid, and determining that the downlink control channel is used for scheduling In the initial transmission, it is determined that the first indication domain is not included in the downlink control channel or the first indicator domain is invalid.
  • the retransmission is scheduled, that is, the HARQ process ID indicated in the downlink control channel is the same as the HARQ process ID corresponding to the TB that the terminal device has received, and according to other indication domains, for example, new data.
  • the downlink control channel includes a second indication field, where the second indication field is used to indicate whether the first indication domain exists or indicates whether the first indication domain is valid, and the terminal device is configured according to the The second indication field determines whether the first indication field exists or indicates whether the first indication field is valid.
  • the second indication field and the first indication field may be independently coded, or at least when the second indication field is used to indicate whether the first indication field is stored, and needs to be independently coded.
  • the second indication field is 1 bit, "0" indicates that the first indication field is not included, and "1" indicates that the first indication field is included, or vice versa; when the terminal device receives the downlink control channel, first parses the second indication field. Determining whether the first indication field is included or determining whether the first indication field is valid according to the second indication field; if it is indicating whether the first indication field is valid, it may be coded separately or jointly; the indication manner is similar to the foregoing, and the implementation is implemented. This will not be repeated in the examples.
  • the downlink control channel includes a third indication field, where the third indication field is used to indicate whether the terminal device supports CBG-based transmission, and when indicating support, determining to include the first indication domain or The first indicator field is valid, otherwise, it is determined that the first indicator field is not included or the first indicator field is invalid.
  • the terminal device may not determine whether the first indication field or the first indication field is valid in the downlink control channel, but whether the downlink control channel is used for scheduling initial transmission or The retransmission, the terminal device considers that all the downlink control channels always include the first indication domain, that is, the downlink control channel used for scheduling retransmission and initial transmission uses the same DCI format.
  • the transmission method of the embodiment of the present application may further include:
  • Receiving high layer signaling determining, according to configuration information in the high layer signaling, whether the terminal device supports CBG-based transmission; if determining that the terminal device supports CBG-based transmission, the terminal device receiving includes the first indication The downlink control channel of the domain.
  • the terminal device receives the high layer signaling before receiving the downlink control channel that includes the first indication domain, and then the terminal device may determine whether to support the CBG-based retransmission according to the configuration of the high layer signaling, when determining When supported, the downlink control channel is received; when it is determined that the downlink control channel is not supported, the downlink control channel may be received according to the DCI size that does not include the first indication domain, or may be received according to the DCI size including the first indication domain.
  • the first indication field may be used to indicate whether each CBG in the corresponding code block group CBG in the initial transmission of the TB needs to be retransmitted.
  • the first indication field includes A*M bit indication information, and each TB corresponds to M-bit indication information, and each of the M-bit information corresponds to one CBG in an initial transmission of one TB, and is used for Determining whether the one CBG is retransmitted; wherein the M is a number of CBGs that are divided or defined by one TB, and the A is a number of TBs included in a shared channel transmission, where the M A is an integer greater than or equal to 1.
  • the first indication field is M bits, and if the current transmission includes A TBs, the first indication field is A*M bits; as shown in FIG. 2,
  • the first indication domain corresponding to each TB may be adjacent to one indication domain; or, as shown in FIG. 3, when multiple TBs are included, the first indication domain corresponding to each TB may also be Separately, respectively as two first indicator fields.
  • FIG. 2 When a plurality of TBs are included, the first indication domain corresponding to each TB may be adjacent to one indication domain; or, as shown in FIG. 3, when multiple TBs are included, the first indication domain corresponding to each TB may also be Separately, respectively as two first indicator fields.
  • MCS Modulation and Coding Scheme
  • RV Redundancy Version
  • NDI-CBGI a joint domain of NDI and CBG indication domains, that is, the first indication
  • the field is used to implement an indication field indicating whether the CBG location and the CBG of the corresponding location are initial transmission or retransmission.
  • the first indication domain corresponding to each TB may also be separated as two first indication domains.
  • the specific manner of the application may be determined according to the actual situation, and the embodiment of the present application does not specifically limit.
  • the information of the 1-bit first indication field corresponding to one CBG is “0” for initial transmission or no retransmission, and “1” indicates retransmission or transmission is required. If all M bits are “0”, then Indicates the initial transmission of a new TB, that is, all CBGs are new transmissions. If all M bits are "1”, it means that the original TB is retransmitted, that is, all CBGs of the TB are retransmitted; or vice versa , that is, "1" means initial transmission, and "0” means retransmission.
  • the method may further include:
  • the terminal device generates M*K-bit ACK/NACK feedback information for each TB, and each K-bit corresponds to one CBG, and the K-bit ACK/NACK feedback information corresponding to each CBG is in the order of CBG corresponding to the initial transmission of one TB. Sorting, or according to the feedback information corresponding to the CBG actually received, the feedback information of the complement is ranked later, or the feedback information corresponding to the CBG actually received is ranked, and the feedback information of the complement is ranked in the front; If the downlink control channel schedules retransmission of a part of the CBGs in the CBG corresponding to the initial transmission of the TB, generating a NACK as the complement information for the CBG locations that are not retransmitted;
  • the terminal device generates A*K-bit ACK/NACK feedback information, where each K-bit corresponds to one CBG, where A is the number of transmitted CBGs scheduled by the downlink control channel; where K is a pre-agreed or configured A value greater than or equal to 1.
  • one TB is divided into four CBGs.
  • the terminal device receives the initial transmission of the TB, it receives four CBGs, and generates one-bit ACK/NACK for each CBG according to the reception condition.
  • the feedback information is obtained by logically summing the ACK/NACK feedback information of each CB included in the CBG, and obtaining a total of 4 bits of ACK/NACK feedback information, such as ACK, NACK, NACK, ACK.
  • the feedback information is fed back to the base station.
  • the base station can determine that the second and third CBGs of the TB need to be retransmitted, and then send a downlink control channel to the terminal device. It is assumed that "1" indicates retransmission, and "0" indicates initial transmission.
  • the first indication field in the downlink control channel is "0110”.
  • the terminal device After receiving the downlink control channel, the terminal device further receives the first indication field "0110".
  • the terminal may always generate a 4-bit ACK/NACK when reporting the ACK/NACK, and generate a NACK as the complement information for the CBG1 and CBG4 that are determined to be retransmitted according to the first indication field.
  • the 4-bit ACK/NACK feedback information reported by the terminal may be sorted by, but not limited to, the following manner:
  • the feedback information corresponding to the actually received retransmission CBG can be ranked first, and the complemented NACK is added later.
  • the feedback information may be ACK, ACK, NACK, NACK.
  • the feedback information corresponding to the actually received retransmission CBG may be omitted, and the complemented NACK may be added to the front.
  • the feedback information may be NACK, NACK, ACK, ACK.
  • the second method may also be sorted according to the number of the CBG divided in the initial transmission of the TB.
  • the ACK/NACK of the retransmitted CBG2 and CBG3 are ranked in the middle, and the 1-bit NACK is added in front of CBG2 as the feedback information of CBG1, and is supplemented by CBG3.
  • the bit NACK is used as feedback information of the CBG2, that is, the 4-bit ACK/NACK feedback information may be NACK, ACK, ACK, NACK.
  • the base station can correctly identify the feedback information of the retransmitted CBG fed back by the terminal device.
  • the ACK/NACK feedback information reported by the terminal may not be sorted, that is, the terminal device may report only the retransmitted CBG when reporting the ACK/NACK, that is, only the 2-bit ACK/NACK feedback information is generated for reporting, such as ACK, ACK. Since the base station knows that only two CBGs are retransmitted, it can also be determined that the terminal device only feeds back 2-bit ACK/NACK, thereby correctly receiving the ACK/NACK. Since the terminal device reports only the retransmitted CBG, the technical effect of reducing the amount of feedback information is achieved.
  • the terminal device when the terminal device determines that all the CBGs are new transmissions according to the first indication field, the terminal device reports an NDI unreversed state to a Media Access Control (MAC) layer; When the terminal device determines that the at least one CBG is retransmitted according to the first indication field, the terminal device reports an NDI inversion status to the MAC layer.
  • MAC Media Access Control
  • the terminal device When the terminal device determines that all the CBGs are new transmissions according to the first indication field, the terminal device reports an NDI toggled state to the MAC layer, indicating that one of the downlink control channels is scheduled.
  • the initial transmission that is, the initial transmission, the previous TB transmission is correct; when the terminal device determines that the at least one CBG is retransmitted according to the first indication field, the terminal device reports that the NDI is not toggled to the MAC.
  • the layer indicates that a retransmission is scheduled for the downlink control channel, and at least one CBG of the previous TB needs to be retransmitted. That is to say, in the CBG-based transmission, whether the retransmission or the new transmission is determined by the indication fields of the multiple CBGs, and then the NDI status corresponding to the retransmission or the new transmission is reported to the upper layer.
  • the terminal device may receive the shared channel corresponding to the downlink control channel according to the first indication domain.
  • the first indication field is included in the downlink control channel, and the bits of the first indication field are all indicated as “0”, it may be represented as an initial transmission of a TB, and the TB and the buffer buffer are not needed at this time. If the TB is included in the downlink control channel, if the first indication field is included in the downlink control channel, and any one of the bits in the first indication field indicates "1", it indicates that the previous TB needs to be retransmitted, and is indicated by the downlink control channel.
  • the terminal Retransmitting one or more CBGs in the TB corresponding to the HARQ process number, and then the terminal receives the corresponding shared channel according to the downlink control channel, and then receives the corresponding retransmission CBG of the TB and the corresponding storage in the buffer.
  • the CBG information is merged.
  • the terminal device may send the shared channel transmission corresponding to the downlink control channel according to the first indication domain. That is, the first indication field may also be in the downlink control channel at the time of initial transmission. For example, the first indication field is “0”, indicating the initial transmission of a TB, and the terminal device takes a TB from the transmitted data for initial transmission. At this time, no merging is needed; if any one of the bits in the first indication field indicates "1" indicates retransmission, specifically one or more of the TBs corresponding to the HARQ process number indicated by the downlink control channel. Retransmission of CBGs, which are retransmitted, which CBGs of the TB are indicated by the first indication field.
  • the terminal device may obtain the CBG corresponding to the TB from the buffer according to the CBG that the TB needs to retransmit according to the first indication field, and send the retransmissions on the shared channel according to the scheduling information in the downlink control channel.
  • the base station side After receiving the CBGs, the base station side combines the received retransmission CBG of the TB with the corresponding CBG information stored in the buffer.
  • the terminal receives the initial transmission of the downlink control channel scheduling TB1 in a shared channel transmission in the slot 1, and the HARQ process number indicated in the downlink control channel is 0, that is, the HARQ process number corresponding to the TB1 is 0.
  • the 4 bits of the first indication field in the downlink control channel are “0000”, that is, the 4 CBGs in which the TB1 is divided, that is, CBG1, CBG2, CBG3, and CBG4, are the first transmission; when the terminal receives After four CBGs in slot 1, one bit of ACK/NACK feedback information is generated for each CBG. For example, if the terminal receives the correct CBG1, CBG3, and CBG4, and the CBG2 receives the error, the terminal feeds back ACK, NACK, ACK, and ACK.
  • the base station determines that only CBG2 needs to be retransmitted, for example, retransmitting in time slot 3.
  • the base station sends a downlink control channel in time slot 3, and sets the first indication field to " 0100", the HARQ process number is set to 0, indicating that the TB1 is retransmitted and only the CBG2 is retransmitted; the terminal receives the downlink control channel in the slot 3, according to the HARQ process number and the first indication field in the downlink control channel.
  • the base station determines that the CBG2 and the CBG4 need to be retransmitted, for example, retransmission in the time slot 3.
  • the base station sends the downlink control channel in slot 3, sets the first indication field to "0101", sets the HARQ process number to 0, indicates retransmission of TB1, and retransmits CBG2 and CBG4; the terminal is in slot 3.
  • Receiving the downlink control channel determining, according to the HARQ process ID and the first indication field in the downlink control channel, retransmission of TB1 and retransmitting CBG2 and CBG4, receiving the downlink shared channel according to the manner, and weighting CBG2 and CBG4
  • the transmitted information is combined with the information of CBG2 and CBG4 stored in the buffer received in the previous initial transmission to improve the demodulation performance.
  • the terminal determines whether the CBG is retransmitted according to the first indication field in the downlink control channel sent by the base station, according to whether the feedback information of the terminal is correctly parsed by the base station, thereby determining how to perform data collection in the receiving and buffer.
  • the terminal and the base station are prevented from understanding the number and number of retransmission CBGs, which causes the terminal side to perform erroneous buffer merging.
  • the embodiment of the present application further provides a terminal device, where the terminal device includes:
  • the first receiving module 10 is configured to receive a downlink control channel
  • the obtaining module 20 is configured to obtain a first indication field from the downlink control channel, where the first indication field is used to indicate whether each CBG in the corresponding code block group CBG in the initial transmission of the TB needs to be retransmitted.
  • the first indication field includes A*M bit indication information, and each TB corresponds to M-bit indication information, and each of the M-bit information corresponds to one CBG in an initial transmission of one TB, and is used for Determining whether the one CBG is retransmitted; wherein the M is a number of CBGs that are divided or defined by one TB, and the A is a number of TBs included in a shared channel transmission, where the M A is an integer greater than or equal to 1.
  • the terminal device further includes:
  • a first determining module configured to determine whether the downlink control channel includes the first indication domain or the first indication domain is valid before acquiring the first indication domain from the downlink control channel.
  • the first determining module is specifically configured to:
  • the downlink control channel When it is determined that the downlink control channel is used for scheduling retransmission, determining that the downlink control channel includes the first indication domain or the first indication domain is valid, when determining that the downlink control channel is used for scheduling initial transmission Determining that the first indication domain is not included in the downlink control channel or the first indicator domain is invalid; or
  • the downlink control channel includes a second indication field, where the second indication field is used to indicate whether the first indication domain exists or whether the first indication domain is valid, and the terminal device is configured according to the second indication. Determining whether the first indication domain exists or indicating whether the first indication domain is valid; or
  • the downlink control channel includes a third indication field, where the third indication field is used to indicate whether the terminal device supports CBG-based transmission, and when indicating support, determining to include the first indication domain or the first Indicate that the domain is valid, otherwise, it is determined that the first indicator domain is not included or the first indicator domain is invalid; or
  • Receiving high layer signaling determining, according to the configuration information in the high layer signaling, whether the terminal device supports CBG-based transmission, and determining, if the support is determined, that the first indication domain or the first indication domain is valid, otherwise Determining that the first indicator domain is not included or the first indicator domain is invalid.
  • the terminal device further includes:
  • a first reporting module configured to: when the terminal device determines that all CBGs are new transmissions according to the first indication field, report new data indicating that the NDI is not reversed to the media access control MAC layer;
  • the second reporting module is configured to report an NDI inversion status to the MAC layer when the terminal device determines that the at least one CBG is retransmitted according to the first indication field.
  • the terminal device further includes:
  • a second receiving module configured to receive high layer signaling before the terminal device receives the downlink control channel
  • a second determining module configured to determine, according to configuration information in the high layer signaling, whether the terminal device supports CBG-based transmission
  • a third receiving module configured to: if it is determined that the terminal device supports CBG-based transmission, the terminal device receives a downlink control channel that includes the first indication domain.
  • the terminal device further includes:
  • a feedback module configured to generate M*K-bit ACK/NACK feedback information for each TB when the terminal device performs ACK/NACK feedback on the CBG scheduled by the downlink control channel, where each K-bit corresponds to one CBG, and each The K-bit ACK/NACK feedback information corresponding to the CBGs are sorted according to the order of the CBGs corresponding to the initial transmission of one TB, or the feedback information corresponding to the actually received CBG is ranked first, and the feedback information of the complementary bits is ranked later, or According to the feedback information corresponding to the actually received CBG, the feedback information of the complement is ranked first; if the downlink control channel schedules the retransmission of part of the CBG in the CBG corresponding to the initial transmission of the TB, then Generating a NACK as a complement information for a CBG location that has not been retransmitted;
  • a transmission method applied to a base station is further provided in the embodiment of the present application, where the transmission method includes:
  • the base station sends a downlink control channel, where the downlink control channel includes a first indication field, where the first indication field is used to indicate whether each CBG in the corresponding code block group CBG in the initial transmission of the TB needs to be retransmitted. .
  • the first indication field includes A*M bit indication information, and each TB corresponds to M-bit indication information, and each of the M-bit information corresponds to one CBG in an initial transmission of one TB, and is used for Determining whether the one CBG is retransmitted; wherein the M is a number of CBGs that are divided or defined by one TB, and the A is a number of TBs included in a shared channel transmission, where the M A is an integer greater than or equal to 1.
  • the determining, by the base station, whether the downlink control channel includes the first indication domain or the first indication domain is valid before the sending, by the base station, the downlink control channel, the determining, by the base station, whether the downlink control channel includes the first indication domain or the first indication domain is valid.
  • the determining, by the base station, whether the downlink control channel includes the first indicator domain or the first indicator domain is valid specifically:
  • the downlink control channel When it is determined that the downlink control channel is used for scheduling retransmission, determining that the downlink control channel includes the first indication domain or the first indication domain is valid, when determining that the downlink control channel is used for scheduling initial transmission Determining that the first indication domain is not included in the downlink control channel or the first indicator domain is invalid; or
  • Determining whether the terminal device supports CBG-based transmission Determining whether the terminal device supports CBG-based transmission, and setting a third indication field in the downlink control channel, where the third indication field is used to indicate whether the terminal device supports CBG-based transmission, when indicating support Determining that the first indicator domain or the first indicator domain is valid, otherwise determining that the first indicator domain is not included or the first indicator domain is invalid; or
  • Determining whether the terminal device supports the CBG-based transmission and sending the high-level signaling to notify the terminal device whether the CBG-based transmission is supported. If the support is determined, determining whether the first indication domain or the first indication domain is valid, otherwise Determining that the first indicator domain is not included or the first indicator domain is invalid.
  • the method before the sending, by the base station, the downlink control channel, the method further includes:
  • the base station sends a downlink control channel including the first indication domain.
  • the method when receiving the ACK/NACK feedback performed by the terminal device on the CBG scheduled by the downlink control channel, the method further includes:
  • the base station determines that the terminal device generates M*K-bit ACK/NACK feedback information for each TB, and each K-bit corresponds to one CBG, and the K-bit ACK/NACK feedback information corresponding to each CBG corresponds to the initial transmission of one TB.
  • the order of the CBGs is sorted, or the feedback information corresponding to the CBG actually received is ranked first, and the feedback information of the complement bits is listed later, or the feedback information corresponding to the actually received CBG is ranked later, and the feedback information of the complement is listed. If the downlink control channel schedules retransmission of a portion of the CBGs in the CBG corresponding to the initial transmission of the TB, generating a NACK as the complement information for the CBG locations that are not retransmitted;
  • the embodiment of the present application further provides a base station, where the base station includes:
  • a sending module configured to send a downlink control channel, where the downlink control channel includes a first indication field, where the first indication field is used to indicate whether each CBG in the corresponding code block group CBG in the initial transmission of the TB needs to be performed. Retransmission.
  • the first indication field includes A*M bit indication information, and each TB corresponds to M-bit indication information, and each of the M-bit information corresponds to one CBG in an initial transmission of one TB, and is used to indicate the one Whether the CBG is retransmitted; wherein, the M is the number of CBGs that are divided into one TB defined or configured, and the A is the number of TBs included in a shared channel transmission, where the M and A are greater than or An integer equal to 1.
  • the base station further includes:
  • a determining module configured to determine, before the base station sends the downlink control channel, whether the downlink control channel includes the first indication domain or the first indication domain is valid.
  • the determining module is specifically configured to:
  • the downlink control channel When it is determined that the downlink control channel is used for scheduling retransmission, determining that the downlink control channel includes the first indication domain or the first indication domain is valid, when determining that the downlink control channel is used for scheduling initial transmission Determining that the first indication domain is not included in the downlink control channel or the first indicator domain is invalid; or
  • Determining whether the terminal device supports CBG-based transmission Determining whether the terminal device supports CBG-based transmission, and setting a third indication field in the downlink control channel, where the third indication field is used to indicate whether the terminal device supports CBG-based transmission, when indicating support Determining that the first indicator domain or the first indicator domain is valid, otherwise determining that the first indicator domain is not included or the first indicator domain is invalid; or
  • Determining whether the terminal device supports the CBG-based transmission and sending the high-level signaling to notify the terminal device whether the CBG-based transmission is supported. If the support is determined, determining whether the first indication domain or the first indication domain is valid, otherwise Determining that the first indicator domain is not included or the first indicator domain is invalid.
  • the sending module is further configured to:
  • the base station Before the base station sends the downlink control channel, sending high layer signaling, where the high layer signaling is used to notify the terminal device whether to support CBG-based transmission;
  • the base station sends a downlink control channel including the first indication domain.
  • the base station further includes:
  • a second determining module configured to: when receiving the ACK/NACK feedback performed by the terminal device on the CBG scheduled by the downlink control channel, determine that the terminal device generates M*K-bit ACK/NACK feedback information for each TB
  • Each K-bit corresponds to one CBG
  • the K-bit ACK/NACK feedback information corresponding to each CBG is sorted according to the order of CBG corresponding to the initial transmission of one TB, or the feedback information corresponding to the actually received CBG is ranked in front, The feedback information of the bit is ranked later, or the feedback information corresponding to the actually received CBG is ranked, and the feedback information of the complement is ranked first; if the downlink control channel schedules the CBG corresponding to the initial transmission of a TB Retransmission of part of the CBG, and generating a NACK as a complement information for the CBG location that is not retransmitted;
  • each K-bit corresponds to one CBG, where A is the number of transmitted CBGs scheduled by the downlink control channel; where K is pre-agreed or configured A value greater than or equal to 1.
  • the fifth embodiment of the present application provides a computer device, where the device includes a processor, and the processor is configured to implement the steps of the method in the first embodiment and the third embodiment of the present application when the computer program is stored in the memory.
  • the sixth embodiment of the present application provides a computer readable storage medium, on which a computer program is stored, and when the computer program is executed by the processor, the steps of the method in the first embodiment and the third embodiment of the present application are implemented.
  • a transmission device provided by an embodiment of the present application, for example, may be a terminal device, including:
  • a memory 620 configured to store program instructions
  • the processor 600 is configured to invoke a program instruction stored in the memory, and execute according to the obtained program:
  • the first indication field includes A*M bit indication information, and each TB corresponds to M-bit indication information, and each of the M-bit information corresponds to one CBG in an initial transmission of one TB, and is used for Determining whether the one CBG is retransmitted; wherein the M is a number of CBGs that are divided or defined by one TB, and the A is a number of TBs included in a shared channel transmission, where the M A is an integer greater than or equal to 1.
  • the processor 600 before acquiring the first indication field from the downlink control channel, the processor 600 is further configured to:
  • the determining, by the processor 600, whether the downlink control channel includes the first indicator domain or the first indicator domain is valid specifically:
  • the downlink control channel When it is determined that the downlink control channel is used for scheduling retransmission, determining that the downlink control channel includes the first indication domain or the first indication domain is valid, when determining that the downlink control channel is used for scheduling initial transmission Determining that the first indication domain is not included in the downlink control channel or the first indicator domain is invalid; or
  • the downlink control channel includes a second indication field, where the second indication field is used to indicate whether the first indication domain exists or whether the first indication domain is valid, and the terminal device is configured according to the second indication. Determining whether the first indication domain exists or indicating whether the first indication domain is valid; or
  • the downlink control channel includes a third indication field, where the third indication field is used to indicate whether the terminal device supports CBG-based transmission, and when indicating support, determining to include the first indication domain or the first Indicate that the domain is valid, otherwise, it is determined that the first indicator domain is not included or the first indicator domain is invalid; or
  • Receiving high layer signaling determining, according to the configuration information in the high layer signaling, whether the terminal device supports CBG-based transmission, and determining, if the support is determined, that the first indication domain or the first indication domain is valid, otherwise Determining that the first indicator domain is not included or the first indicator domain is invalid.
  • the processor 600 determines that all the CBGs are new transmissions according to the first indication field, the processor 600 reports the new data by the transceiver 610 to indicate an NDI inversion status to the media access control MAC.
  • the processor 600 determines that the at least one CBG is a retransmission according to the first indication field, the processor 600 reports the NDI unreversed state to the MAC layer through the transceiver 610.
  • the processor 600 before the processor 600 receives the downlink control channel by using the transceiver 610, the processor 600 is further configured to:
  • the downlink control channel including the first indication domain is received by the transceiver 610.
  • the method is further configured to:
  • each K-bit corresponding to one CBG, and the K-bit ACK/NACK feedback information corresponding to each CBG is sorted according to the order of CBG corresponding to the initial transmission of one TB, or according to The feedback information corresponding to the actually received CBG is ranked first, and the feedback information of the complement is listed later, or the feedback information corresponding to the CBG actually received is ranked later, and the feedback information of the complement is ranked in front;
  • the control channel schedules a retransmission of a portion of the CBGs in the CBG corresponding to the initial transmission of the TB, and generates a NACK as the complement information for the CBG locations that are not retransmitted;
  • the processor 600 generates A*K-bit ACK/NACK feedback information, where each K-bit corresponds to one CBG, where A is the number of CBGs scheduled for transmission by the downlink control channel; where K is pre-agreed or configured A value greater than or equal to 1.
  • the transceiver 610 is configured to receive and transmit data under the control of the processor 600.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 600 and various circuits of memory represented by memory 620.
  • the bus architecture can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 610 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 630 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 in performing operations.
  • the processor 600 may be a CPU (Central Embedded Device), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). , complex programmable logic devices).
  • CPU Central Embedded Device
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic Device
  • another transmission apparatus may be a base station, including:
  • a memory 520 configured to store program instructions
  • the processor 500 is configured to invoke a program instruction stored in the memory, and execute according to the obtained program:
  • the downlink control channel is sent by the transceiver 510, where the downlink control channel includes a first indication field, where the first indication field is used to indicate whether each CBG in the corresponding code block group CBG in the initial transmission of the TB needs to be heavy. pass.
  • the first indication field includes A*M bit indication information, and each TB corresponds to M-bit indication information, and each of the M-bit information corresponds to one CBG in an initial transmission of one TB, and is used for Determining whether the one CBG is retransmitted; wherein the M is a number of CBGs that are divided or defined by one TB, and the A is a number of TBs included in a shared channel transmission, where the M A is an integer greater than or equal to 1.
  • the processor 500 before the processor 500 sends the downlink control channel by using the transceiver 510, the processor 500 is further configured to:
  • the determining, by the processor, the downlink control channel, whether the first indicator domain or the first indicator domain is valid specifically includes:
  • the downlink control channel When it is determined that the downlink control channel is used for scheduling retransmission, determining that the downlink control channel includes the first indication domain or the first indication domain is valid, when determining that the downlink control channel is used for scheduling initial transmission Determining that the first indication domain is not included in the downlink control channel or the first indicator domain is invalid; or
  • Determining whether the terminal device supports CBG-based transmission Determining whether the terminal device supports CBG-based transmission, and setting a third indication field in the downlink control channel, where the third indication field is used to indicate whether the terminal device supports CBG-based transmission, when indicating support Determining that the first indicator domain or the first indicator domain is valid, otherwise determining that the first indicator domain is not included or the first indicator domain is invalid; or
  • Determining whether the terminal device supports the CBG-based transmission and sending the high-level signaling to notify the terminal device whether the CBG-based transmission is supported. If the support is determined, determining whether the first indication domain or the first indication domain is valid, otherwise Determining that the first indicator domain is not included or the first indicator domain is invalid.
  • the processor 500 before the processor 500 sends the downlink control channel by using the transceiver 510, the processor 500 is further configured to:
  • the high-level signaling is sent by the transceiver 510, where the high-level signaling is used to notify the terminal device whether to support the CBG-based transmission;
  • the processor 500 transmits a downlink control channel including the first indication domain through the transceiver 510.
  • the processor 500 when the processor 500 receives the ACK/NACK feedback performed by the terminal device on the CBG scheduled by the downlink control channel, the processor 500 is further configured to:
  • the terminal device Determining that the terminal device generates M*K-bit ACK/NACK feedback information for each TB, and each K-bit corresponds to one CBG, and the K-bit ACK/NACK feedback information corresponding to each CBG is in accordance with the CBG corresponding to the initial transmission of one TB. Sorting sequentially, or according to the feedback information corresponding to the CBG actually received, the feedback information of the complement is listed later, or the feedback information corresponding to the CBG actually received is listed, and the feedback information of the complement is ranked in front. If the downlink control channel schedules retransmission of a portion of the CBGs in the CBG corresponding to the initial transmission of one TB, generating a NACK as the complement information for the CBG locations that are not retransmitted;
  • each K-bit corresponds to one CBG, where A is the number of transmitted CBGs scheduled by the downlink control channel; where K is pre-agreed or configured A value greater than or equal to 1.
  • the transceiver 510 is configured to receive and transmit data under the control of the processor 500.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 500 and various circuits of memory represented by memory 520.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 510 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.
  • the processor 500 can be a central buried device (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (Complex Programmable Logic Device). , CPLD).
  • CPU central buried device
  • ASIC application specific integrated circuit
  • FPGA field-programmable gate array
  • CPLD complex programmable logic device
  • the terminal device receives the downlink control channel, and then acquires a first indication field from the downlink control channel, where the first indication field is used to indicate the corresponding code block group CBG in the initial transmission of the TB.
  • embodiments of the present application can be provided as a method, system, 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.

Abstract

本申请实施例提供一种传输方法、终端设备及基站,用以解决现有技术中没有支持基于CBG进行重传和ACK/NACK反馈的方法的技术问题,所述传输方法包括所述终端设备接收下行控制信道;所述终端设备从所述下行控制信道中获取第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。

Description

一种传输方法、终端设备及基站
本申请要求在2017年5月5日提交中国专利局、申请号为201710314182.3、发明名称为“一种传输方法、终端设备及基站”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域,尤其涉及一种传输方法、终端设备及基站。
背景技术
在长期演进(Long Term Evolution,LTE)系统中,物理下行共享信道(Physical Downlink Shared CHannel,PDSCH)和物理上行共享信道(Physical Uplink Shared CHannel,PUSCH)分别用于承载下行数据传输和上行数据传输。每次传输以传输块(Transport Block,TB)为单位,一个PDSCH/PUSCH信道根据配置的传输模式不同,可以支持1或2个TB传输。以下行数据传输为例,终端在接收到PDSCH之后需要进行针对该PDSCH中传输的TB的肯定确认(ACKnowledgement,ACK)/否定确认(Non-ACKnowledgement,NACK)反馈。ACK/NACK反馈是针对TB进行的,即在不使用空间合并时,每个TB对应1比特ACK/NACK反馈信息,用于表示该TB的接收是否正确;对于配置多TB传输的PDSCH且使用空间合并时,需要对一个PDSCH中所承载的每个TB对应的ACK/NACK反馈信息进行逻辑与操作,得到1比特ACK/NACK反馈信息。上行数据传输类似。
由于编码器的复杂度限制,一个TB需要分割为K个码块(Code Block,CB),对每个CB分别进行编码和循环冗余校验(Cyclic Redundancy Check,CRC)的添加,将多个编码后的CB级联在一起进行映射和传输。由于每个CB为独立编码且都包含CRC,因此实际上每个CB都可以产生ACK/NACK反馈信息,但如果针对每个CB都进行ACK/NACK反馈,则一个TB需要对应K比特ACK/NACK反馈信息,反馈量较大。LTE系统中为了减少ACK/NACK反馈量,仅针对TB进行ACK/NACK反馈,即只有一个TB中的所有CB都正确接收,该TB才算正确接收,终端会反馈ACK作为反馈信息,只要该TB中有一个CB错误接收,该TB的反馈信息就为NACK,则基站侧需要重传该TB。
随着移动通信业务需求的发展变化,国际电信联盟(International Telecommunication Union,ITU)和第三代产业合作计划(3rd Generation Partnership Project,3GPP)等组织都开始研究新的第五代无线通信系统(5Generation New RAT,5G NR)。5G系统中支持更多样和复杂的数据传输,需要机制提高系统传输效率,而上述应用于LTE系统中的基于TB的传输和ACK/NACK反馈机制不再适用于5G NR系统。
综上所述,现有技术中没有相关方法支持基于CBG进行重传和ACK/NACK反馈。
发明内容
本申请实施例提供一种传输方法、终端设备及基站,用以解决现有技术中没有支持基于CBG进行重传和ACK/NACK反馈的方法的技术问题。
第一方面,本申请实施例提供一种传输方法,应用于一终端设备,所述传输方法包括:所述终端设备接收下行控制信道;所述终端设备从所述下行控制信道中获取第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
可选的,所述第一指示域包含A*M比特指示信息,每个TB对应M比特指示信息,所述M比特信息中的每1比特对应一个TB的初始传输中的一个CBG,用于指示所述一个CBG是否重传;其中,所述M为预先定义或配置的一个TB被划分的CBG的个数,所述A为一个共享信道传输所包含的TB的个数,所述M和A为大于或等于1的整数。
可选的,所述终端设备从所述下行控制信道中获取第一指示域之前,还包括:所述终端设备确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效。
可选的,所述终端设备确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效,具体包括:
当判断所述下行控制信道用于调度重传时,确定所述下行控制信道中包含所述第一指示域或所述第一指示域有效,当判断所述下行控制信道用于调度初传时,确定所述下行控制信道中不包含所述第一指示域或所述第一指示域无效;或者,所述下行控制信道用于对所述M个CBG进行调度重传和/或调度初传。
所述下行控制信道中包含第二指示域,所述第二指示域用于指示所述第一指示域是否存在或指示所述第一指示域是否有效,所述终端设备根据所述第二指示域确定所述第一指示域是否存在或指示所述第一指示域是否有效;或者,
所述下行控制信道中包含第三指示域,所述第三指示域用于指示所述终端设备是否支持基于CBG的传输,当指示支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效;或者,
接收高层信令,基于所述高层信令中的配置信息确定所述终端设备是否支持基于CBG的传输,若确定支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
可选的,当所述终端设备根据所述第一指示域确定所有CBG都为新的传输时,所述终端设备上报NDI反转状态给MAC层;当所述终端设备根据所述第一指示域确定至少一个CBG为重传时,所述终端设备上报NDI未反转状态给MAC层。
可选的,所述终端设备接收下行控制信道之前,所述方法还包括:
接收高层信令;
基于所述高层信令中的配置信息确定所述终端设备是否支持基于CBG的传输;
若确定所述终端设备支持基于CBG的传输,所述终端设备接收包含所述第一指示域的下行控制信道。
可选的,当所述终端设备对所述下行控制信道所调度的CBG进行ACK/NACK反馈时,所述方法还包括:
所述终端设备对每个TB产生M*K比特ACK/NACK反馈信息,每K比特对应一个CBG,每个CBG对应的K比特ACK/NACK反馈信息按照一个TB的初始传输所对应的CBG的顺序排序,或者按照实际接收到的CBG对应的反馈信息排在前面,补位的反馈信息排在后面,或者按照实际接收到的CBG对应的反馈信息排在后面,补位的反馈信息排在前面;如果所述下行控制信道调度的是一个TB的初始传输所对应的CBG中的部分CBG的重传,则对未被重传的CBG位置产生NACK作为补位信息;
或者,
所述终端设备产生A*K比特ACK/NACK反馈信息,每K比特对应一个CBG,所述A为所述下行控制信道所调度的传输的CBG个数;
其中,K为预先约定或配置的大于或等于1的值。
第二方面,本申请实施例提供一种终端设备,可以应用上述传输方法,所述终端设备包括:
第一接收模块,用于接收下行控制信道;
获取模块,用于从所述下行控制信道中获取第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
可选的,所述第一指示域包含A*M比特指示信息,每个TB对应M比特指示信息,所述M比特信息中的每1比特对应一个TB的初始传输中的一个CBG,用于指示所述一个CBG是否重传;其中,所述M为预先定义或配置的一个TB被划分的CBG的个数,所述A为一个共享信道传输所包含的TB的个数,所述M和A为大于或等于1的整数。
可选的,所述终端设备还包括:
第一确定模块,用于从所述下行控制信道中获取第一指示域之前,确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效。
可选的,所述第一确定模块具体用于:
当判断所述下行控制信道用于调度重传时,确定所述下行控制信道中包含所述第一指示域或所述第一指示域有效,当判断所述下行控制信道用于调度初传时,确定所述下行控制信道中不包含所述第一指示域或所述第一指示域无效;或者,
所述下行控制信道中包含第二指示域,所述第二指示域用于指示所述第一指示域是否存在或指示所述第一指示域是否有效,所述终端设备根据所述第二指示域确定所述第一指 示域是否存在或指示所述第一指示域是否有效;或者,
所述下行控制信道中包含第三指示域,所述第三指示域用于指示所述终端设备是否支持基于CBG的传输,当指示支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效;或者,
接收高层信令,基于所述高层信令中的配置信息确定所述终端设备是否支持基于CBG的传输,若确定支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
可选的,所述终端设备还包括:
第一上报模块,用于当所述终端设备根据所述第一指示域确定所有CBG都为新的传输时,上报NDI反转状态给MAC层;
第二上报模块,用于当所述终端设备根据所述第一指示域确定至少一个CBG为重传时,上报NDI未反转状态给MAC层。
可选的,所述终端设备还包括:
第二接收模块,用于在所述终端设备接收下行控制信道之前,接收高层信令;
第二确定模块,用于基于所述高层信令中的配置信息确定所述终端设备是否支持基于CBG的传输;
第三接收模块,用于若确定所述终端设备支持基于CBG的传输,所述终端设备接收包含所述第一指示域的下行控制信道。
可选的,所述终端设备还包括:
反馈模块,用于当所述终端设备对所述下行控制信道所调度的CBG进行ACK/NACK反馈时,对每个TB产生M*K比特ACK/NACK反馈信息,每K比特对应一个CBG,每个CBG对应的K比特ACK/NACK反馈信息按照一个TB的初始传输所对应的CBG的顺序排序,或者按照实际接收到的CBG对应的反馈信息排在前面,补位的反馈信息排在后面,或者按照实际接收到的CBG对应的反馈信息排在后面,补位的反馈信息排在前面;如果所述下行控制信道调度的是一个TB的初始传输所对应的CBG中的部分CBG的重传,则对未被重传的CBG位置产生NACK作为补位信息;
或者,
产生A*K比特ACK/NACK反馈信息,每K比特对应一个CBG,所述A为所述下行控制信道所调度的传输的CBG个数;其中,K为预先约定或配置的大于或等于1的值。
第三方面,本申请实施例还提供一种传输方法,应用于一基站,该传输方法包括:所述基站发送下行控制信道,所述下行控制信道中包含第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
可选的,所述第一指示域包含A*M比特指示信息,每个TB对应M比特指示信息, 所述M比特信息中的每1比特对应一个TB的初始传输中的一个CBG,用于指示所述一个CBG是否重传;其中,所述M为预先定义或配置的一个TB被划分的CBG的个数,所述A为一个共享信道传输所包含的TB的个数,所述M和A为大于或等于1的整数。
可选的,所述基站发送下行控制信道之前,还包括:
所述基站确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效。
可选的,所述基站确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效,具体包括:
当判断所述下行控制信道用于调度重传时,确定所述下行控制信道中包含所述第一指示域或所述第一指示域有效,当判断所述下行控制信道用于调度初传时,确定所述下行控制信道中不包含所述第一指示域或所述第一指示域无效;或者,
确定是否包含所述第一指示域或所述第一指示域是否有效,并设置所述下行控制信道中的第二指示域,所述第二指示域用于指示所述第一指示域是否存在或指示所述第一指示域是否有效;或者,
确定所述终端设备是否支持基于CBG的传输,并设置所述下行控制信道中的第三指示域,所述第三指示域用于指示所述终端设备是否支持基于CBG的传输,当指示支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效;或者,
确定所述终端设备是否支持基于CBG的传输,并发送高层信令通知终端设备是否支持基于CBG的传输,若确定支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
可选的,所述基站发送下行控制信道之前,所述方法还包括:
发送高层信令,所述高层信令用于通知终端设备是否支持基于CBG的传输;
若确定所述终端设备支持基于CBG的传输,所述基站发送包含所述第一指示域的下行控制信道。
可选的,当接收所述终端设备对所述下行控制信道所调度的CBG进行的ACK/NACK反馈时,所述方法还包括:
所述基站确定所述终端设备对每个TB产生M*K比特ACK/NACK反馈信息,每K比特对应一个CBG,每个CBG对应的K比特ACK/NACK反馈信息按照一个TB的初始传输所对应的CBG的顺序排序,或者按照实际接收到的CBG对应的反馈信息排在前面,补位的反馈信息排在后面,或按照实际接收到的CBG对应的反馈信息排在后面,补位的反馈信息排在前面;如果所述下行控制信道调度的是一个TB的初始传输所对应的CBG中的部分CBG的重传,则对未被重传的CBG位置产生NACK作为补位信息;
或者,
所述基站确定所述终端设备产生A*K比特ACK/NACK反馈信息,每K比特对应一个CBG,所述A为所述下行控制信道所调度的传输的CBG个数;其中,K为预先约定或配置的大于或等于1的值。
第四方面,本申请实施例还提供一种基站,可以应用上述第三方面中的传输方法,该基站包括:发送模块,用于发送下行控制信道,所述下行控制信道中包含第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
可选的,所述第一指示域包含A*M比特指示信息,每个TB对应M比特指示信息,所述M比特信息中的每1比特对应一个TB的初始传输中的一个CBG,用于指示所述一个CBG是否重传;其中,所述M为预先定义或配置的一个TB被划分的CBG的个数,所述A为一个共享信道传输所包含的TB的个数,所述M和A为大于或等于1的整数。
可选的,所述基站还包括:
第一确定模块,用于在所述基站发送下行控制信道之前,确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效。
可选的,所述第一确定模块具体用于:
当判断所述下行控制信道用于调度重传时,确定所述下行控制信道中包含所述第一指示域或所述第一指示域有效,当判断所述下行控制信道用于调度初传时,确定所述下行控制信道中不包含所述第一指示域或所述第一指示域无效;或者,
确定是否包含所述第一指示域或所述第一指示域是否有效,并设置所述下行控制信道中的第二指示域,所述第二指示域用于指示所述第一指示域是否存在或指示所述第一指示域是否有效;或者,
确定所述终端设备是否支持基于CBG的传输,并设置所述下行控制信道中的第三指示域,所述第三指示域用于指示所述终端设备是否支持基于CBG的传输,当指示支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效;或者,
确定所述终端设备是否支持基于CBG的传输,并发送高层信令通知终端设备是否支持基于CBG的传输,若确定支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
可选的,所述发送模块还用于:
在所述基站发送下行控制信道之前,发送高层信令,所述高层信令用于通知终端设备是否支持基于CBG的传输;
若确定所述终端设备支持基于CBG的传输,所述基站发送包含所述第一指示域的下 行控制信道。
可选的,所述基站还包括:
第二确定模块,用于当接收所述终端设备对所述下行控制信道所调度的CBG进行的ACK/NACK反馈时,确定所述终端设备对每个TB产生M*K比特ACK/NACK反馈信息,每K比特对应一个CBG,每个CBG对应的K比特ACK/NACK反馈信息按照一个TB的初始传输所对应的CBG的顺序排序,或者按照实际接收到的CBG对应的反馈信息排在前面,补位的反馈信息排在后面,或按照实际接收到的CBG对应的反馈信息排在后面,补位的反馈信息排在前面;如果所述下行控制信道调度的是一个TB的初始传输所对应的CBG中的部分CBG的重传,则对未被重传的CBG位置产生NACK作为补位信息;
或者,
确定所述终端设备产生A*K比特ACK/NACK反馈信息,每K比特对应一个CBG,所述A为所述下行控制信道所调度的传输的CBG个数;其中,K为预先约定或配置的大于或等于1的值。
第五方面,本申请的实施例五提供了一种计算机装置,所述装置包括处理器,所述处理器用于执行存储器中存储的计算机程序时实现如实施例一和实施例三中所述方法的步骤。
第六方面,本申请的实施例六提供了一种计算机可读存储介质,其上存储有计算机程序,所述计算机程序被处理器执行时实现如实施例一和实施例三中所述方法的步骤。
第七方面,本申请的实施例七提供了一种传输装置,包括:
存储器,用于存储程序指令;
处理器,用于调用所述存储器中存储的程序指令,按照获得的程序执行:
接收下行控制信道;
从所述下行控制信道中获取第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
第八方面,本申请的实施例八提供了一种传输装置,包括:
存储器,用于存储程序指令;
处理器,用于调用所述存储器中存储的程序指令,按照获得的程序执行:
发送下行控制信道,所述下行控制信道中包含第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
上述技术方案中的一个或多个技术方案,具有如下技术效果或优点:
本申请实施例提供的传输方法中,终端设备接收下行控制信道,然后从下行控制信道中获取第一指示域,该第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传,解决了现有技术中存在的没有支持基于CBG进行重传和 ACK/NACK反馈的方法的技术问题,达到了提高传输性能的技术效果。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本申请实施例中应用于终端设备的传输方法的流程示意图;
图2为本申请实施例中对应每个TB的第一指示域可以相邻作为一个指示域的示意图;
图3为本申请实施例中对应每个TB的第一指示域可以分别作为两个指示域的示意图;
图4为本申请实施例中终端设备的模块示意图;
图5为本申请实施例提供的终端侧的传输装置的结构示意图;
图6为本申请实施例提供的网络侧的传输装置的结构示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚,下面将结合附图对本申请作进一步地详细描述,显然,所描述的实施例仅是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本申请保护的范围。
首先,对码块组(Code Block Group,CBG)的相关概念进行介绍。
目前,5G NR系统中提出了基于CBG的传输和ACK/NACK反馈概念,即一个TB在经过码块分割得到K个CB后,K个CB可以按照一定规则被分为多个CBG,每个CBG中可以仅包含一个CB,也可以包含K个CB(即一个TB)。
5G-NR系统中在支持基于CBG的重传和ACK/NACK时,由于ACK/NACK传输本身的错误概率,可能导致终端对一个CBG传输的反馈信息为NACK,而基站理解为ACK,或者反之,从而导致终端和基站对重传的CBG的理解不一致,导致错误的混合自动重传请求(Hybrid Auto Repeat reQuest,HARQ)合并。
本申请实施例中的传输方法,可以应用于终端设备中,该终端设备可以为手机、电脑等用户设备(User Equipment,UE),具体为何种终端设备,本申请不作具体限制。
本申请实施例中的传输方法可以但不仅限于应用在5G NR系统中,该方法对其他系统,如LTE系统等也同样适用。并且本申请实施例中的“第一、第二、第三”等字样仅是便于区分,并不用于任何的限定。
为了更好的理解上述技术方案,下面将结合说明书附图以及具体的实施方式对上述技 术方案进行详细的说明。
实施例一
请参见图1,本申请实施例提供一种传输方法,应用于一终端设备,该传输方法的过程可以描述如下:
S100:所述终端设备接收下行控制信道;
S200:所述终端设备从所述下行控制信道中获取第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
即在本申请实施例中,第一指示域可以用于指示一个TB的初始传输中所分割的CBG中哪些CBG被包含在下行控制信道所调度的共享信道中进行重传。
可选的,在S100之前,本申请实施例的传输方法还可以包括:所述终端设备确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效。
其中,第一指示域有效,表征为终端设备需要读取第一指示域,然后根据第一指示域的指示执行相应的操作;而第一指示域无效,表征为下行控制信道中存在第一指示域,但此时第一指示域没有任何指示作用,此时终端设备在接收下行控制信道时可以假设该下行控制信道中包含M比特或A*M比特第一指示域,但并不关注第一指示域的具体内容,可以不去解析这部分指示的比特状态。
并且,所述终端设备可以根据当所述下行控制信道用于调度重传时,所述下行控制信道中包含所述第一指示域,当所述下行控制信道用于调度初传时,所述下行控制信道中不包含所述第一指示域,即用于调度重传和初传的下行控制信道使用不同的下行控制信息(Downlink Control Information,DCI)格式。
可选的,所述终端设备确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效,可以通过但不仅限于以下几种方式进行:
方式一、当判断所述下行控制信道用于调度重传时,确定所述下行控制信道中包含所述第一指示域或所述第一指示域有效,当判断所述下行控制信道用于调度初传时,确定所述下行控制信道中不包含所述第一指示域或所述第一指示域无效。
在实际应用中,调度重传,即:所述下行控制信道中所指示的HARQ进程号与所述终端设备已经接收到的TB所对应的HARQ进程号相同,且根据其他指示域,例如新数据指示(New Data Indication,NDI)或可以指示该下行控制信道是否对应重传的指示域等,确定为重传,或者重传和初传对应的DCI大小或无线网络临时标识(Radio Network Tempory Identity,RNTI)不同,终端设备通过检测不同的DCI大小或RNTI可以确定本次为初传还是重传。
方式二、所述下行控制信道中包含第二指示域,所述第二指示域用于指示所述第一指示域是否存在或指示所述第一指示域是否有效,所述终端设备根据所述第二指示域确定所 述第一指示域是否存在或指示所述第一指示域是否有效。
其中,所述第二指示域与所述第一指示域可以独立编码,或者至少在第二指示域用于指示所述第一指示域是否存时,需要独立编码。例如,第二指示域为1比特,“0”表示不包含第一指示域,“1”表示包含第一指示域,或者反之;终端设备在接收到下行控制信道时,先解析第二指示域,根据第二指示域确定是否包含第一指示域或者确定第一指示域是否有效;如果是指示所述第一指示域是否有效,可以独立编码也可以联合编码;指示方式类似上述,本申请实施例中不再赘述。
方式三、所述下行控制信道中包含第三指示域,所述第三指示域用于指示所述终端设备是否支持基于CBG的传输,当指示支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
方式四、接收高层信令,基于所述高层信令中的配置信息确定所述终端设备是否支持基于CBG的传输,若确定支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
当然,在实际应用中,终端设备也可以不对下行控制信道中是否包含所述第一指示域或所述第一指示域是否有效进行判断,而是不论所述下行控制信道用于调度初传还是重传,终端设备都认为所有所述下行控制信道中总是包含所述第一指示域,即用于调度重传和初传的下行控制信道使用相同的DCI格式。
可选的,在S100之前,本申请实施例的传输方法还可以包括:
接收高层信令;基于所述高层信令中的配置信息确定所述终端设备是否支持基于CBG的传输;若确定所述终端设备支持基于CBG的传输,所述终端设备接收包含所述第一指示域的下行控制信道。
本申请实施例中,终端设备在接收包含所述第一指示域的下行控制信道之前,会接收高层信令,然后终端设备可以根据高层信令的配置确定是否支持基于CBG的重传,当确定支持时,接收所述下行控制信道;当确定不支持时,可以按照不包含第一指示域的DCI大小接收下行控制信道,或者也可以按照包含第一指示域的DCI大小接收下行控制信道。
在S200中,第一指示域可以用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
可选的,所述第一指示域包含A*M比特指示信息,每个TB对应M比特指示信息,所述M比特信息中的每1比特对应一个TB的初始传输中的一个CBG,用于指示所述一个CBG是否重传;其中,所述M为预先定义或配置的一个TB被划分的CBG的个数,所述A为一个共享信道传输所包含的TB的个数,所述M和A为大于或等于1的整数。
举例来说,如果当前传输仅包含1个TB,则所述第一指示域为M比特,如果当前传输包含A个TB,所述第一指示域为A*M比特;如图2所示,当包含多个TB时,对应每 个TB的第一指示域可以相邻作为一个指示域;或者,如图3所示,当包含多个TB时,对应每个TB的第一指示域也可以分开,分别作为两个第一指示域。其中,图2中,MCS表示调制编码方式(Modulation and Coding Scheme,MCS),RV表示冗余版本(Redundancy Version,RV);而NDI-CBGI表示NDI和CBG指示域的联合域,即第一指示域,用于实现指示CBG位置以及相应位置的CBG的传输状态为初传还是重传的指示域。
或者,如图3所示,当包含多个TB时,对应每个TB的第一指示域也可以分开,分别作为两个第一指示域。具体采用何种方式可以根据实际情况而定,本申请实施例不作具体限制。
例如,对应一个CBG的1比特第一指示域的信息为“0”表示初传或不重传,为“1”表示重传或者本次需要传输,如果所有M比特都为“0”,则表示一个新的TB的初传,即所有CBG都为新的传输,如果所有M比特都为“1”,则表示原TB的重传,即该TB的所有CBG都进行重传;或者反之既然,即“1”表示初传,“0”表示重传。
可选的,当所述终端设备对所述下行控制信道所调度的CBG进行ACK/NACK反馈时,所述方法还可以包括:
所述终端设备对每个TB产生M*K比特ACK/NACK反馈信息,每K比特对应一个CBG,每个CBG对应的K比特ACK/NACK反馈信息按照一个TB的初始传输所对应的CBG的顺序排序,或者按照实际接收到的CBG对应的反馈信息排在前面,补位的反馈信息排在后面,或按照实际接收到的CBG对应的反馈信息排在后面,补位的反馈信息排在前面;如果所述下行控制信道调度的是一个TB的初始传输所对应的CBG中的部分CBG的重传,则对未被重传的CBG位置产生NACK作为补位信息;
或者,所述终端设备产生A*K比特ACK/NACK反馈信息,每K比特对应一个CBG,所述A为所述下行控制信道所调度的传输的CBG个数;其中,K为预先约定或配置的大于或等于1的值。
在实际应用中,初始传输时,一个TB被分割为4个CBG,则当终端设备接收到该TB的初始传输时,接收到4个CBG,对每个CBG根据接收情况产生1比特ACK/NACK反馈信息,该1比特ACK/NACK反馈信息是对该CBG所包含的每个CB的ACK/NACK反馈信息进行逻辑与得到的,一共得到4比特ACK/NACK反馈信息,如可以为ACK,NACK,NACK,ACK。
然后,将该反馈信息反馈给基站,基站在接收到反馈信息后,可以判断出TB的第2和第3个CBG需要进行重传,则发送一个下行控制信道给终端设备。假设“1”表示重传,“0”表示初传,则该下行控制信道中的第一指示域为“0110”,终端设备接收到该下行控制信道后,进一步接收与第一指示域“0110”所对应的共享信道中的重传的CBG2和CBG3,然后终端设备再根据接收情况对接收到的重传CBG产生ACK/NACK反馈信息,如可以为 ACK,ACK等。
在实际应用中,终端在上报ACK/NACK时可以总是产生4比特ACK/NACK,而对根据第一指示域判断出的不需要进行重传的CBG1和CBG4产生NACK作为补位信息。
其中,终端上报的4比特ACK/NACK反馈信息可以通过但不仅限于以下方式进行排序:
方式一、可以将实际接收到的重传CBG对应的反馈信息排在前面,将补位的NACK补充在后面。
比如,CBG2和CBG3重传,不需要进行重传的CBG1和CBG4产生NACK作为补位信息,则反馈信息可以为ACK,ACK,NACK,NACK。
或者,也可以反之,即可以将实际接收到的重传CBG对应的反馈信息排在后面,将补位的NACK补充在前面。如反馈信息可以为NACK,NACK,ACK,ACK。
方式二、也可以按照TB的初始传输中分割的CBG的编号进行排序。
比如,TB初始传输中分割为CBG1、CBG2、CBG3、CBG4,则重传的CBG2和CBG3的ACK/NACK排在中间,而在CBG2前面补1比特NACK作为CBG1的反馈信息,在CBG3后面补1比特NACK作为CBG2的反馈信息,即4比特的ACK/NACK反馈信息可以为NACK,ACK,ACK,NACK。
需要说明的是,只要终端设备和基站预先约定好排序方式,基站就可以正确识别终端设备反馈的重传的CBG的反馈信息。
或者,终端上报的ACK/NACK反馈信息也可以不进行排序,即终端设备在上报ACK/NACK时可以仅针对重传的CBG上报,即仅产生2比特ACK/NACK反馈信息进行上报,如ACK、ACK。由于基站知道仅重传了两个CBG,因此,也可以确定终端设备仅反馈2比特ACK/NACK,从而正确接收ACK/NACK。由于终端设备仅针对重传的CBG上报,达到了减少反馈信息量的技术效果。
可选的,当所述终端设备根据所述第一指示域确定所有CBG都为新的传输时,所述终端设备上报NDI未反转状态给媒体接入控制(Media Access Control,MAC)层;当所述终端设备根据所述第一指示域确定至少一个CBG为重传时,所述终端设备上报NDI反转状态给MAC层。
其中,当所述终端设备根据所述第一指示域确定所有CBG都为新的传输时,所述终端设备上报NDI反转(toggled)状态给MAC层,表示为所述下行控制信道调度了一个初始传输,即初传,前一个TB传输正确;当所述终端设备根据所述第一指示域确定至少一个CBG为重传时,所述终端设备上报NDI未反转(not toggled)状态给MAC层,表示为所述下行控制信道调度了一个重传,前一个TB的至少一个CBG需要重传。也就是说,在基于CBG的传输中,可以通过多个CBG的指示域来确定是重传还是新传输,然后将对应 重传或新传输的NDI状态报给高层。
本申请实施例中,若为下行传输,则终端设备可以根据第一指示域接收与下行控制信道对应的共享信道。
比如,若下行控制信道中可以包括第一指示域,且该第一指示域的比特均指示为“0”,则可以表示为一个TB的初传,这时候不需要将该TB与缓冲区buffer中存储的TB进行合并;若下行控制信道中包括第一指示域,且第一指示域中有任何一个比特指示为“1”,则表示上一个TB需要重传,且为下行控制信道所指示的HARQ进程编号相对应的TB中的一个或多个CBG的重传,然后终端会根据该下行控制信道接收对应的共享信道,然后将接收到的该TB的重传CBG与buffer中存储的对应的CBG信息进行合并。
若为上行传输,则终端设备可以根据第一指示域发送与下行控制信道对应的共享信道传输。即初传的时候下行控制信道中也可以有第一指示域,例如第一指示域都是“0”,表示一个TB的初传,终端设备从带传输的数据中取一个TB进行初传,这时候就不需要合并;如果第一指示域中的任何一个比特指示为“1”表示重传,具体的是与所述下行控制信道所指示的HARQ进程编号相对应的TB中的一个或多个CBG的重传,重传的是该TB的哪些CBG由第一指示域指示。然后,终端设备可以根据第一指示域所指示的该TB需要重传的CBG,从buffer中取得该TB对应的CBG,根据该下行控制信道中的调度信息在共享信道上发送这些需要重传的CBG,基站侧在接收到这些CBG之后,会将接收到的该TB的重传CBG与buffer中存储的对应的CBG信息进行合并。
下面,本申请实施例将通过举例来说明传输方法在实际应用中的应用场景。
以终端设备与基站之间传输一个TB为例,并假设“0”表示初传,“1”表示重传。其中,一个TB可以被固定划分为4个CBG,则第一指示域可以为4比特。终端在时隙1中接收到一个下行控制信道调度TB1在一个共享信道传输进行的初传传输,该下行控制信道中指示的HARQ进程号为0,即该TB1对应的HARQ进程号为0,该下行控制信道中的第一指示域的4比特为“0000”,即表示该TB1被划分为的4个CBG,即CBG1、CBG2、CBG3和CBG4,都是第一次传输;终端在接收到时隙1中的4个CBG后,对每个CBG产生1比特ACK/NACK反馈信息,例如终端对第CBG1、CBG3、CBG4接收正确,对CBG2接收错误,则终端反馈ACK,NACK,ACK,ACK。
如果基站正确接收到终端的反馈信息,则基站确定只需要重传CBG2,例如在时隙3中进行重传,基站在时隙3中发送下行控制信道,将其中的第一指示域置为“0100”,将HARQ进程号置为0,表示TB1的重传且仅重传CBG2;终端在时隙3中接收到该下行控制信道,根据该下行控制信道中的HARQ进程号和第一指示域,确定为TB1的重传且仅重传CBG2,按照该方式接收下行共享信道,并将CBG2重传的信息与前一次初始传输中接收到的存储在buffer中的CBG2的信息进行合并,以提高解调性能。
或者,即使基站接收到的终端的反馈信息存在一定错误,例如基站解析的反馈信息为ACK,NACK,ACK,NACK,则基站确定需要重传CBG2和CBG4,例如在时隙3中进行重传,基站在时隙3中发送下行控制信道,将其中的第一指示域置为“0101”,将HARQ进程号置为0,表示TB1的重传且重传CBG2和CBG4;终端在时隙3中接收到该下行控制信道,根据该下行控制信道中的HARQ进程号和第一指示域,确定为TB1的重传且重传CBG2和CBG4,按照该方式接收下行共享信道,并将CBG2和CBG4重传的信息与前一次初始传输中接收到的存储在buffer中的CBG2和CBG4的信息进行合并,以提高解调性能。
按照上述方法,不论基站对终端的反馈信息是否解析正确,终端都会按照基站发送的下行控制信道中的第一指示域确定哪个CBG进行了重传,从而确定如何进行接收和buffer中的数据合并,避免终端和基站对重传CBG的个数和编号的理解,导致终端侧进行错误的buffer合并。
实施例二
请参见图4,基于与实施例一同一发明构思,本申请实施例还提供一种终端设备,该终端设备包括:
第一接收模块10,用于接收下行控制信道;
获取模块20,用于从所述下行控制信道中获取第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
可选的,所述第一指示域包含A*M比特指示信息,每个TB对应M比特指示信息,所述M比特信息中的每1比特对应一个TB的初始传输中的一个CBG,用于指示所述一个CBG是否重传;其中,所述M为预先定义或配置的一个TB被划分的CBG的个数,所述A为一个共享信道传输所包含的TB的个数,所述M和A为大于或等于1的整数。
可选的,所述终端设备还包括:
第一确定模块,用于从所述下行控制信道中获取第一指示域之前,确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效。
所述第一确定模块具体用于:
当判断所述下行控制信道用于调度重传时,确定所述下行控制信道中包含所述第一指示域或所述第一指示域有效,当判断所述下行控制信道用于调度初传时,确定所述下行控制信道中不包含所述第一指示域或所述第一指示域无效;或者,
所述下行控制信道中包含第二指示域,所述第二指示域用于指示所述第一指示域是否存在或指示所述第一指示域是否有效,所述终端设备根据所述第二指示域确定所述第一指示域是否存在或指示所述第一指示域是否有效;或者,
所述下行控制信道中包含第三指示域,所述第三指示域用于指示所述终端设备是否支 持基于CBG的传输,当指示支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效;或者,
接收高层信令,基于所述高层信令中的配置信息确定所述终端设备是否支持基于CBG的传输,若确定支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
可选的,所述终端设备还包括:
第一上报模块,用于当所述终端设备根据所述第一指示域确定所有CBG都为新的传输时,上报新数据指示NDI未反转状态给媒体接入控制MAC层;
第二上报模块,用于当所述终端设备根据所述第一指示域确定至少一个CBG为重传时,上报NDI反转状态给MAC层。
所述终端设备还包括:
第二接收模块,用于在所述终端设备接收下行控制信道之前,接收高层信令;
第二确定模块,用于基于所述高层信令中的配置信息确定所述终端设备是否支持基于CBG的传输;
第三接收模块,用于若确定所述终端设备支持基于CBG的传输,所述终端设备接收包含所述第一指示域的下行控制信道。
可选的,所述终端设备还包括:
反馈模块,用于当所述终端设备对所述下行控制信道所调度的CBG进行ACK/NACK反馈时,对每个TB产生M*K比特ACK/NACK反馈信息,每K比特对应一个CBG,每个CBG对应的K比特ACK/NACK反馈信息按照一个TB的初始传输所对应的CBG的顺序排序,或者按照实际接收到的CBG对应的反馈信息排在前面,补位的反馈信息排在后面,或按照实际接收到的CBG对应的反馈信息排在后面,补位的反馈信息排在前面;如果所述下行控制信道调度的是一个TB的初始传输所对应的CBG中的部分CBG的重传,则对未被重传的CBG位置产生NACK作为补位信息;
或者,
产生A*K比特ACK/NACK反馈信息,每K比特对应一个CBG,所述A为所述下行控制信道所调度的传输的CBG个数;其中,K为预先约定或配置的大于或等于1的值。
实施例三
本申请实施例中还提供一种应用于基站的传输方法,该传输方法包括:
所述基站发送下行控制信道,所述下行控制信道中包含第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
可选的,所述第一指示域包含A*M比特指示信息,每个TB对应M比特指示信息,所述M比特信息中的每1比特对应一个TB的初始传输中的一个CBG,用于指示所述一个 CBG是否重传;其中,所述M为预先定义或配置的一个TB被划分的CBG的个数,所述A为一个共享信道传输所包含的TB的个数,所述M和A为大于或等于1的整数。
可选的,所述基站发送下行控制信道之前,还包括:所述基站确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效。
可选的,所述基站确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效,具体包括:
当判断所述下行控制信道用于调度重传时,确定所述下行控制信道中包含所述第一指示域或所述第一指示域有效,当判断所述下行控制信道用于调度初传时,确定所述下行控制信道中不包含所述第一指示域或所述第一指示域无效;或者,
确定是否包含所述第一指示域或所述第一指示域是否有效,并设置所述下行控制信道中的第二指示域,所述第二指示域用于指示所述第一指示域是否存在或指示所述第一指示域是否有效;或者,
确定所述终端设备是否支持基于CBG的传输,并设置所述下行控制信道中的第三指示域,所述第三指示域用于指示所述终端设备是否支持基于CBG的传输,当指示支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效;或者,
确定所述终端设备是否支持基于CBG的传输,并发送高层信令通知终端设备是否支持基于CBG的传输,若确定支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
可选的,所述基站发送下行控制信道之前,所述方法还包括:
发送高层信令,所述高层信令用于通知终端设备是否支持基于CBG的传输;
若确定所述终端设备支持基于CBG的传输,所述基站发送包含所述第一指示域的下行控制信道。
可选的,当接收所述终端设备对所述下行控制信道所调度的CBG进行的ACK/NACK反馈时,所述方法还包括:
所述基站确定所述终端设备对每个TB产生M*K比特ACK/NACK反馈信息,每K比特对应一个CBG,每个CBG对应的K比特ACK/NACK反馈信息按照一个TB的初始传输所对应的CBG的顺序排序,或者按照实际接收到的CBG对应的反馈信息排在前面,补位的反馈信息排在后面,或按照实际接收到的CBG对应的反馈信息排在后面,补位的反馈信息排在前面;如果所述下行控制信道调度的是一个TB的初始传输所对应的CBG中的部分CBG的重传,则对未被重传的CBG位置产生NACK作为补位信息;
或者,
所述基站确定所述终端设备产生A*K比特ACK/NACK反馈信息,每K比特对应一个 CBG,所述A为所述下行控制信道所调度的传输的CBG个数;其中,K为预先约定或配置的大于或等于1的值。
实施例四
本申请实施例还提供一种基站,该基站包括:
发送模块,用于发送下行控制信道,所述下行控制信道中包含第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
所述第一指示域包含A*M比特指示信息,每个TB对应M比特指示信息,所述M比特信息中的每1比特对应一个TB的初始传输中的一个CBG,用于指示所述一个CBG是否重传;其中,所述M为预先定义或配置的一个TB被划分的CBG的个数,所述A为一个共享信道传输所包含的TB的个数,所述M和A为大于或等于1的整数。
可选的,所述基站还包括:
确定模块,用于在所述基站发送下行控制信道之前,确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效。
可选的,所述确定模块具体用于:
当判断所述下行控制信道用于调度重传时,确定所述下行控制信道中包含所述第一指示域或所述第一指示域有效,当判断所述下行控制信道用于调度初传时,确定所述下行控制信道中不包含所述第一指示域或所述第一指示域无效;或者,
确定是否包含所述第一指示域或所述第一指示域是否有效,并设置所述下行控制信道中的第二指示域,所述第二指示域用于指示所述第一指示域是否存在或指示所述第一指示域是否有效;或者,
确定所述终端设备是否支持基于CBG的传输,并设置所述下行控制信道中的第三指示域,所述第三指示域用于指示所述终端设备是否支持基于CBG的传输,当指示支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效;或者,
确定所述终端设备是否支持基于CBG的传输,并发送高层信令通知终端设备是否支持基于CBG的传输,若确定支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
可选的,所述发送模块还用于:
在所述基站发送下行控制信道之前,发送高层信令,所述高层信令用于通知终端设备是否支持基于CBG的传输;
若确定所述终端设备支持基于CBG的传输,所述基站发送包含所述第一指示域的下行控制信道。
可选的,所述基站还包括:
第二确定模块,用于当接收所述终端设备对所述下行控制信道所调度的CBG进行的ACK/NACK反馈时,确定所述终端设备对每个TB产生M*K比特ACK/NACK反馈信息,每K比特对应一个CBG,每个CBG对应的K比特ACK/NACK反馈信息按照一个TB的初始传输所对应的CBG的顺序排序,或者按照实际接收到的CBG对应的反馈信息排在前面,补位的反馈信息排在后面,或按照实际接收到的CBG对应的反馈信息排在后面,补位的反馈信息排在前面;如果所述下行控制信道调度的是一个TB的初始传输所对应的CBG中的部分CBG的重传,则对未被重传的CBG位置产生NACK作为补位信息;
或者,
确定所述终端设备产生A*K比特ACK/NACK反馈信息,每K比特对应一个CBG,所述A为所述下行控制信道所调度的传输的CBG个数;其中,K为预先约定或配置的大于或等于1的值。
本申请实施例五提供了一种计算机装置,所述装置包括处理器,所述处理器用于执行存储器中存储的计算机程序时实现本申请实施例一及实施例三中所述方法的步骤。
本申请实施例六提供了一种计算机可读存储介质,其上存储有计算机程序,所述计算机程序被处理器执行时实现本申请实施例一及实施例三中所述方法的步骤。
参见图5,本申请实施例提供的一种传输装置,例如可以是终端设备,包括:
存储器620,用于存储程序指令;
处理器600,用于调用所述存储器中存储的程序指令,按照获得的程序执行:
通过收发机610接收下行控制信道;
从所述下行控制信道中获取第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
可选地,所述第一指示域包含A*M比特指示信息,每个TB对应M比特指示信息,所述M比特信息中的每1比特对应一个TB的初始传输中的一个CBG,用于指示所述一个CBG是否重传;其中,所述M为预先定义或配置的一个TB被划分的CBG的个数,所述A为一个共享信道传输所包含的TB的个数,所述M和A为大于或等于1的整数。
可选地,处理器600从所述下行控制信道中获取第一指示域之前,还用于:
确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效。
可选地,所述处理器600确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效,具体包括:
当判断所述下行控制信道用于调度重传时,确定所述下行控制信道中包含所述第一指示域或所述第一指示域有效,当判断所述下行控制信道用于调度初传时,确定所述下行控制信道中不包含所述第一指示域或所述第一指示域无效;或者,
所述下行控制信道中包含第二指示域,所述第二指示域用于指示所述第一指示域是否 存在或指示所述第一指示域是否有效,所述终端设备根据所述第二指示域确定所述第一指示域是否存在或指示所述第一指示域是否有效;或者,
所述下行控制信道中包含第三指示域,所述第三指示域用于指示所述终端设备是否支持基于CBG的传输,当指示支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效;或者,
接收高层信令,基于所述高层信令中的配置信息确定所述终端设备是否支持基于CBG的传输,若确定支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
可选地,当所述处理器600根据所述第一指示域确定所有CBG都为新的传输时,所述处理器600通过收发机610上报新数据指示NDI反转状态给媒体接入控制MAC层;当所述处理器600根据所述第一指示域确定至少一个CBG为重传时,所述处理器600通过收发机610上报NDI未反转状态给MAC层。
可选地,所述处理器600通过收发机610接收下行控制信道之前,还用于:
通过收发机610接收高层信令;
基于所述高层信令中的配置信息确定终端设备是否支持基于CBG的传输;
若确定所述终端设备支持基于CBG的传输,通过收发机610接收包含所述第一指示域的下行控制信道。
可选地,当所述处理器600对所述下行控制信道所调度的CBG进行ACK/NACK反馈时,还用于:
对每个TB产生M*K比特ACK/NACK反馈信息,每K比特对应一个CBG,每个CBG对应的K比特ACK/NACK反馈信息按照一个TB的初始传输所对应的CBG的顺序排序,或者按照实际接收到的CBG对应的反馈信息排在前面,补位的反馈信息排在后面,或者按照实际接收到的CBG对应的反馈信息排在后面,补位的反馈信息排在前面;如果所述下行控制信道调度的是一个TB的初始传输所对应的CBG中的部分CBG的重传,则对未被重传的CBG位置产生NACK作为补位信息;
或者,
所述处理器600产生A*K比特ACK/NACK反馈信息,每K比特对应一个CBG,所述A为所述下行控制信道所调度的传输的CBG个数;其中,K为预先约定或配置的大于或等于1的值。
收发机610,用于在处理器600的控制下接收和发送数据。
其中,在图5中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器600代表的一个或多个处理器和存储器620代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都 是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机610可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备,用户接口630还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器600负责管理总线架构和通常的处理,存储器620可以存储处理器600在执行操作时所使用的数据。
可选的,处理器600可以是CPU(中央处埋器)、ASIC(Application Specific Integrated Circuit,专用集成电路)、FPGA(Field-Programmable Gate Array,现场可编程门阵列)或CPLD(Complex Programmable Logic Device,复杂可编程逻辑器件)。
参见图6,本申请实施例提供的另一种传输装置,例如可以是基站,包括:
存储器520,用于存储程序指令;
处理器500,用于调用所述存储器中存储的程序指令,按照获得的程序执行:
通过收发机510发送下行控制信道,所述下行控制信道中包含第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
可选地,所述第一指示域包含A*M比特指示信息,每个TB对应M比特指示信息,所述M比特信息中的每1比特对应一个TB的初始传输中的一个CBG,用于指示所述一个CBG是否重传;其中,所述M为预先定义或配置的一个TB被划分的CBG的个数,所述A为一个共享信道传输所包含的TB的个数,所述M和A为大于或等于1的整数。
可选地,所述处理器500通过收发机510发送下行控制信道之前,还用于:
确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效。
可选地,所述处理器500确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效,具体包括:
当判断所述下行控制信道用于调度重传时,确定所述下行控制信道中包含所述第一指示域或所述第一指示域有效,当判断所述下行控制信道用于调度初传时,确定所述下行控制信道中不包含所述第一指示域或所述第一指示域无效;或者,
确定是否包含所述第一指示域或所述第一指示域是否有效,并设置所述下行控制信道中的第二指示域,所述第二指示域用于指示所述第一指示域是否存在或指示所述第一指示域是否有效;或者,
确定所述终端设备是否支持基于CBG的传输,并设置所述下行控制信道中的第三指示域,所述第三指示域用于指示所述终端设备是否支持基于CBG的传输,当指示支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效;或者,
确定所述终端设备是否支持基于CBG的传输,并发送高层信令通知终端设备是否支 持基于CBG的传输,若确定支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
可选地,所述处理器500通过收发机510发送下行控制信道之前,还用于:
通过收发机510发送高层信令,所述高层信令用于通知终端设备是否支持基于CBG的传输;
若确定所述终端设备支持基于CBG的传输,所述处理器500通过收发机510发送包含所述第一指示域的下行控制信道。
可选地,当所述处理器500通过收发机510接收所述终端设备对所述下行控制信道所调度的CBG进行的ACK/NACK反馈时,所述处理器500还用于:
确定所述终端设备对每个TB产生M*K比特ACK/NACK反馈信息,每K比特对应一个CBG,每个CBG对应的K比特ACK/NACK反馈信息按照一个TB的初始传输所对应的CBG的顺序排序,或者按照实际接收到的CBG对应的反馈信息排在前面,补位的反馈信息排在后面,或按照实际接收到的CBG对应的反馈信息排在后面,补位的反馈信息排在前面;如果所述下行控制信道调度的是一个TB的初始传输所对应的CBG中的部分CBG的重传,则对未被重传的CBG位置产生NACK作为补位信息;
或者,
确定所述终端设备产生A*K比特ACK/NACK反馈信息,每K比特对应一个CBG,所述A为所述下行控制信道所调度的传输的CBG个数;其中,K为预先约定或配置的大于或等于1的值。
收发机510,用于在处理器500的控制下接收和发送数据。
其中,在图6中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器500代表的一个或多个处理器和存储器520代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机510可以是多个元件,即包括发送机和收发机,提供用于在传输介质上与各种其他装置通信的单元。处理器500负责管理总线架构和通常的处理,存储器520可以存储处理器500在执行操作时所使用的数据。
处理器500可以是中央处埋器(CPU)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device,CPLD)。
上述技术方案中的一个或多个技术方案,具有如下技术效果或优点:
本申请实施例提供的传输方法中,终端设备接收下行控制信道,然后从下行控制信道中获取第一指示域,该第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个 CBG是否需要进行重传,解决了现有技术中存在的没有支持基于CBG进行重传和ACK/NACK反馈的方法的技术问题,达到了提高传输性能的技术效果。
本领域内的技术人员应明白,本申请的实施例可提供为方法、系统、或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本申请的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然,本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请实施例的精神和范围。这样,倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。

Claims (30)

  1. 一种传输方法,应用于一终端设备,其特征在于,所述方法包括:
    所述终端设备接收下行控制信道;
    所述终端设备从所述下行控制信道中获取第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
  2. 如权利要求1所述的方法,其特征在于,所述第一指示域包含A*M比特指示信息,每个TB对应M比特指示信息,所述M比特信息中的每1比特对应一个TB的初始传输中的一个CBG,用于指示所述一个CBG是否重传;其中,所述M为预先定义或配置的一个TB被划分的CBG的个数,所述A为一个共享信道传输所包含的TB的个数,所述M和A为大于或等于1的整数。
  3. 如权利要求1所述的方法,其特征在于,所述终端设备从所述下行控制信道中获取第一指示域之前,还包括:
    所述终端设备确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效。
  4. 如权利要求3所述的方法,其特征在于,所述终端设备确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效,具体包括:
    当判断所述下行控制信道用于调度重传时,确定所述下行控制信道中包含所述第一指示域或所述第一指示域有效,当判断所述下行控制信道用于调度初传时,确定所述下行控制信道中不包含所述第一指示域或所述第一指示域无效;或者,
    所述下行控制信道中包含第二指示域,所述第二指示域用于指示所述第一指示域是否存在或指示所述第一指示域是否有效,所述终端设备根据所述第二指示域确定所述第一指示域是否存在或指示所述第一指示域是否有效;或者,
    所述下行控制信道中包含第三指示域,所述第三指示域用于指示所述终端设备是否支持基于CBG的传输,当指示支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效;或者,
    接收高层信令,基于所述高层信令中的配置信息确定所述终端设备是否支持基于CBG的传输,若确定支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
  5. 如权利要求1所述的方法,其特征在于,当所述终端设备根据所述第一指示域确定所有CBG都为新的传输时,所述终端设备上报新数据指示NDI反转状态给媒体接入控制MAC层;当所述终端设备根据所述第一指示域确定至少一个CBG为重传时,所述终端设备上报NDI未反转状态给MAC层。
  6. 如权利要求1所述的方法,其特征在于,所述终端设备接收下行控制信道之前,所述方法还包括:
    接收高层信令;
    基于所述高层信令中的配置信息确定所述终端设备是否支持基于CBG的传输;
    若确定所述终端设备支持基于CBG的传输,所述终端设备接收包含所述第一指示域的下行控制信道。
  7. 如权利要求2所述的方法,其特征在于,当所述终端设备对所述下行控制信道所调度的CBG进行ACK/NACK反馈时,所述方法还包括:
    所述终端设备对每个TB产生M*K比特ACK/NACK反馈信息,每K比特对应一个CBG,每个CBG对应的K比特ACK/NACK反馈信息按照一个TB的初始传输所对应的CBG的顺序排序,或者按照实际接收到的CBG对应的反馈信息排在前面,补位的反馈信息排在后面,或者按照实际接收到的CBG对应的反馈信息排在后面,补位的反馈信息排在前面;如果所述下行控制信道调度的是一个TB的初始传输所对应的CBG中的部分CBG的重传,则对未被重传的CBG位置产生NACK作为补位信息;
    或者,
    所述终端设备产生A*K比特ACK/NACK反馈信息,每K比特对应一个CBG,所述A为所述下行控制信道所调度的传输的CBG个数;其中,K为预先约定或配置的大于或等于1的值。
  8. 一种传输方法,应用于一基站,其特征在于,所述方法包括:
    所述基站发送下行控制信道,所述下行控制信道中包含第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
  9. 如权利要求8所述的方法,其特征在于,所述第一指示域包含A*M比特指示信息,每个TB对应M比特指示信息,所述M比特信息中的每1比特对应一个TB的初始传输中的一个CBG,用于指示所述一个CBG是否重传;其中,所述M为预先定义或配置的一个TB被划分的CBG的个数,所述A为一个共享信道传输所包含的TB的个数,所述M和A为大于或等于1的整数。
  10. 如权利要求8所述的方法,其特征在于,所述基站发送下行控制信道之前,还包括:
    所述基站确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效。
  11. 如权利要求10所述的方法,其特征在于,所述基站确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效,具体包括:
    当判断所述下行控制信道用于调度重传时,确定所述下行控制信道中包含所述第一指 示域或所述第一指示域有效,当判断所述下行控制信道用于调度初传时,确定所述下行控制信道中不包含所述第一指示域或所述第一指示域无效;或者,
    确定是否包含所述第一指示域或所述第一指示域是否有效,并设置所述下行控制信道中的第二指示域,所述第二指示域用于指示所述第一指示域是否存在或指示所述第一指示域是否有效;或者,
    确定所述终端设备是否支持基于CBG的传输,并设置所述下行控制信道中的第三指示域,所述第三指示域用于指示所述终端设备是否支持基于CBG的传输,当指示支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效;或者,
    确定所述终端设备是否支持基于CBG的传输,并发送高层信令通知终端设备是否支持基于CBG的传输,若确定支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
  12. 如权利要求8所述的方法,其特征在于,所述基站发送下行控制信道之前,所述方法还包括:
    发送高层信令,所述高层信令用于通知终端设备是否支持基于CBG的传输;
    若确定所述终端设备支持基于CBG的传输,所述基站发送包含所述第一指示域的下行控制信道。
  13. 如权利要求9所述的方法,其特征在于,当接收所述终端设备对所述下行控制信道所调度的CBG进行的ACK/NACK反馈时,所述方法还包括:
    所述基站确定所述终端设备对每个TB产生M*K比特ACK/NACK反馈信息,每K比特对应一个CBG,每个CBG对应的K比特ACK/NACK反馈信息按照一个TB的初始传输所对应的CBG的顺序排序,或者按照实际接收到的CBG对应的反馈信息排在前面,补位的反馈信息排在后面,或按照实际接收到的CBG对应的反馈信息排在后面,补位的反馈信息排在前面;如果所述下行控制信道调度的是一个TB的初始传输所对应的CBG中的部分CBG的重传,则对未被重传的CBG位置产生NACK作为补位信息;
    或者,
    所述基站确定所述终端设备产生A*K比特ACK/NACK反馈信息,每K比特对应一个CBG,所述A为所述下行控制信道所调度的传输的CBG个数;其中,K为预先约定或配置的大于或等于1的值。
  14. 一种终端设备,其特征在于,所述终端设备包括:
    第一接收模块,用于接收下行控制信道;
    获取模块,用于从所述下行控制信道中获取第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
  15. 如权利要求14所述的终端设备,其特征在于,所述第一指示域包含A*M比特指示信息,每个TB对应M比特指示信息,所述M比特信息中的每1比特对应一个TB的初始传输中的一个CBG,用于指示所述一个CBG是否重传;其中,所述M为预先定义或配置的一个TB被划分的CBG的个数,所述A为一个共享信道传输所包含的TB的个数,所述M和A为大于或等于1的整数。
  16. 如权利要求14所述的终端设备,其特征在于,所述终端设备还包括:
    第一确定模块,用于从所述下行控制信道中获取第一指示域之前,确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效。
  17. 如权利要求16所述的终端设备,其特征在于,所述第一确定模块具体用于:
    当判断所述下行控制信道用于调度重传时,确定所述下行控制信道中包含所述第一指示域或所述第一指示域有效,当判断所述下行控制信道用于调度初传时,确定所述下行控制信道中不包含所述第一指示域或所述第一指示域无效;或者,
    所述下行控制信道中包含第二指示域,所述第二指示域用于指示所述第一指示域是否存在或指示所述第一指示域是否有效,所述终端设备根据所述第二指示域确定所述第一指示域是否存在或指示所述第一指示域是否有效;或者,
    所述下行控制信道中包含第三指示域,所述第三指示域用于指示所述终端设备是否支持基于CBG的传输,当指示支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效;或者,
    接收高层信令,基于所述高层信令中的配置信息确定所述终端设备是否支持基于CBG的传输,若确定支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
  18. 如权利要求14所述的终端设备,其特征在于,所述终端设备还包括:
    第一上报模块,用于当所述终端设备根据所述第一指示域确定所有CBG都为新的传输时,上报新数据指示NDI反转状态给媒体接入控制MAC层;
    第二上报模块,用于当所述终端设备根据所述第一指示域确定至少一个CBG为重传时,上报NDI未反转状态给MAC层。
  19. 如权利要求14所述的终端设备,其特征在于,所述终端设备还包括:
    第二接收模块,用于在所述终端设备接收下行控制信道之前,接收高层信令;
    第二确定模块,用于基于所述高层信令中的配置信息确定所述终端设备是否支持基于CBG的传输;
    第三接收模块,用于若确定所述终端设备支持基于CBG的传输,所述终端设备接收包含所述第一指示域的下行控制信道。
  20. 如权利要求15所述的终端设备,其特征在于,所述终端设备还包括:
    反馈模块,用于当所述终端设备对所述下行控制信道所调度的CBG进行ACK/NACK反馈时,对每个TB产生M*K比特ACK/NACK反馈信息,每K比特对应一个CBG,每个CBG对应的K比特ACK/NACK反馈信息按照一个TB的初始传输所对应的CBG的顺序排序,或者按照实际接收到的CBG对应的反馈信息排在前面,补位的反馈信息排在后面,或按照实际接收到的CBG对应的反馈信息排在后面,补位的反馈信息排在前面;如果所述下行控制信道调度的是一个TB的初始传输所对应的CBG中的部分CBG的重传,则对未被重传的CBG位置产生NACK作为补位信息;
    或者,
    产生A*K比特ACK/NACK反馈信息,每K比特对应一个CBG,所述A为所述下行控制信道所调度的传输的CBG个数;其中,K为预先约定或配置的大于或等于1的值。
  21. 一种基站,其特征在于,所述基站包括:
    发送模块,用于发送下行控制信道,所述下行控制信道中包含第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
  22. 如权利要求21所述的基站,其特征在于,所述第一指示域包含A*M比特指示信息,每个TB对应M比特指示信息,所述M比特信息中的每1比特对应一个TB的初始传输中的一个CBG,用于指示所述一个CBG是否重传;其中,所述M为预先定义或配置的一个TB被划分的CBG的个数,所述A为一个共享信道传输所包含的TB的个数,所述M和A为大于或等于1的整数。
  23. 如权利要求21所述的基站,其特征在于,所述基站还包括:
    第一确定模块,用于在所述基站发送下行控制信道之前,确定所述下行控制信道是否包含所述第一指示域或所述第一指示域是否有效。
  24. 如权利要求23所述的基站,其特征在于,所述第一确定模块具体用于:
    当判断所述下行控制信道用于调度重传时,确定所述下行控制信道中包含所述第一指示域或所述第一指示域有效,当判断所述下行控制信道用于调度初传时,确定所述下行控制信道中不包含所述第一指示域或所述第一指示域无效;或者,
    确定是否包含所述第一指示域或所述第一指示域是否有效,并设置所述下行控制信道中的第二指示域,所述第二指示域用于指示所述第一指示域是否存在或指示所述第一指示域是否有效;或者,
    确定所述终端设备是否支持基于CBG的传输,并设置所述下行控制信道中的第三指示域,所述第三指示域用于指示所述终端设备是否支持基于CBG的传输,当指示支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效;或者,
    确定所述终端设备是否支持基于CBG的传输,并发送高层信令通知终端设备是否支 持基于CBG的传输,若确定支持时,确定包含所述第一指示域或所述第一指示域有效,否则,确定不包含所述第一指示域或所述第一指示域无效。
  25. 如权利要求21所述的基站,其特征在于,所述发送模块还用于:
    在所述基站发送下行控制信道之前,发送高层信令,所述高层信令用于通知终端设备是否支持基于CBG的传输;
    若确定所述终端设备支持基于CBG的传输,所述基站发送包含所述第一指示域的下行控制信道。
  26. 如权利要求22所述的基站,其特征在于,所述基站还包括:
    第二确定模块,用于当接收所述终端设备对所述下行控制信道所调度的CBG进行的ACK/NACK反馈时,确定所述终端设备对每个TB产生M*K比特ACK/NACK反馈信息,每K比特对应一个CBG,每个CBG对应的K比特ACK/NACK反馈信息按照一个TB的初始传输所对应的CBG的顺序排序,或者按照实际接收到的CBG对应的反馈信息排在前面,补位的反馈信息排在后面,或按照实际接收到的CBG对应的反馈信息排在后面,补位的反馈信息排在前面;如果所述下行控制信道调度的是一个TB的初始传输所对应的CBG中的部分CBG的重传,则对未被重传的CBG位置产生NACK作为补位信息;
    或者,
    确定所述终端设备产生A*K比特ACK/NACK反馈信息,每K比特对应一个CBG,所述A为所述下行控制信道所调度的传输的CBG个数;其中,K为预先约定或配置的大于或等于1的值。
  27. 一种计算机装置,其特征在于,所述装置包括处理器,所述处理器用于执行存储器中存储的计算机程序时实现如权利要求1-13中任一项所述方法的步骤。
  28. 一种计算机可读存储介质,其上存储有计算机程序,其特征在于:所述计算机程序被处理器执行时实现如权利要求1-13中任一项所述方法的步骤。
  29. 一种传输装置,其特征在于,包括:
    存储器,用于存储程序指令;
    处理器,用于调用所述存储器中存储的程序指令,按照获得的程序执行:
    接收下行控制信道;
    从所述下行控制信道中获取第一指示域,所述第一指示域用于指示TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
  30. 一种传输装置,其特征在于,包括:
    存储器,用于存储程序指令;
    处理器,用于调用所述存储器中存储的程序指令,按照获得的程序执行:
    发送下行控制信道,所述下行控制信道中包含第一指示域,所述第一指示域用于指示 TB的初始传输中对应的码块组CBG中的每个CBG是否需要进行重传。
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