WO2022027195A1 - Procédé et dispositif de traitement de rétroaction harq, et support d'enregistrement - Google Patents

Procédé et dispositif de traitement de rétroaction harq, et support d'enregistrement Download PDF

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Publication number
WO2022027195A1
WO2022027195A1 PCT/CN2020/106647 CN2020106647W WO2022027195A1 WO 2022027195 A1 WO2022027195 A1 WO 2022027195A1 CN 2020106647 W CN2020106647 W CN 2020106647W WO 2022027195 A1 WO2022027195 A1 WO 2022027195A1
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WIPO (PCT)
Prior art keywords
harq feedback
harq
descrambling
dci
disabled
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PCT/CN2020/106647
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English (en)
Chinese (zh)
Inventor
朱亚军
洪伟
王天佳
李勇
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北京小米移动软件有限公司
北京邮电大学
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Priority to CN202080001780.5A priority Critical patent/CN112204908B/zh
Priority to PCT/CN2020/106647 priority patent/WO2022027195A1/fr
Publication of WO2022027195A1 publication Critical patent/WO2022027195A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements 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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements 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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1864—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements 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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated

Definitions

  • the embodiments of the present disclosure relate to the field of wireless communication, but are not limited to the field of wireless communication, and in particular, relate to a method and apparatus for processing HARQ feedback, and a storage medium.
  • the Hybrid Automatic Repeat Request (HARQ) mechanism is one of the most important functions in data transmission in cellular networks. Combined with link adaptation, HARQ can achieve efficient, reliable and low-latency data transmission in cellular networks. .
  • the sender needs to wait for the feedback from the receiver before sending new data. If the receiver feedback negative acknowledgement (NACK, Non-Acknowledgement), the sender needs to retransmit the data packet, otherwise, it can send new data.
  • the Stop and Wait (SAW, Stop and Wait) process in the HARQ mechanism will reduce the link throughput due to the delay of the HARQ RTT (HARQ Round Trip Time, HARQ Round Trip Time).
  • Non-terrestrial network (NTN, Non-Terrestrial Network) communication especially satellite communication, has the characteristics of wide coverage, strong disaster resistance and large capacity.
  • NTN Non-terrestrial network
  • the NTN network has the characteristics of large transmission delay due to the long distance between the two communication parties. Therefore, the stop-waiting process of the HARQ mechanism in the related art requires a longer RTT, and thus has a larger delay compared to a terrestrial network (TN, Terrestrial Network).
  • the present disclosure provides an access control method and device, and a storage medium.
  • a method for processing HARQ feedback for processing HARQ feedback is provided, and the method is applied to a base station, including:
  • HARQ feedback status information whether to disable the HARQ feedback is implicitly indicated to a UE (User Equipment, user equipment).
  • implicitly indicating to the UE whether to disable the HARQ feedback according to the HARQ feedback status information comprising:
  • the DCI Downlink Control Information, downlink control information
  • C-RNTI Cell-Radio Network Temporary Identifier, cell wireless network temporary identifier
  • the HARQ feedback status information implicitly indicating to the UE whether to disable the HARQ feedback, comprising:
  • the DCI scrambled with the first scrambling times is delivered.
  • the first number of scrambling times is one.
  • the HARQ feedback status information implicitly indicating to the UE whether to disable the HARQ feedback, comprising:
  • the DCI scrambled with the second scrambling times is delivered.
  • the second number of scrambling times is two.
  • scrambling the DCI at least once with the C-RNTI includes:
  • the DCI In response to the HARQ feedback status information indicating that the HARQ feedback is disabled, the DCI is first scrambled by using the C-RNTI; and, using the shift sequence obtained by shifting the C-RNTI, the The DCI performs a second scrambling.
  • the shift sequence is a sequence obtained by shifting the sequence of the C-RNTI by at least one bit.
  • the HARQ feedback status information implicitly indicating to the UE whether to disable the HARQ feedback, comprising:
  • dispatch scheduling information for scheduling HARQ processes In response to the HARQ feedback status information being that HARQ feedback is disabled, dispatch scheduling information for scheduling HARQ processes, where the scheduling information is used to schedule HARQ processes in the disabled HARQ process group for which the HARQ feedback is disabled; or
  • scheduling information for scheduling HARQ processes is delivered, where the scheduling information is used to schedule HARQ processes in the disabled HARQ process group that enables the HARQ feedback.
  • the method further includes:
  • HARQ configuration information is delivered to the UE through RRC (Radio Resource Control, Radio Resource Control) signaling, where the HARQ configuration information includes at least one of the following: the process identifier for enabling the HARQ process, the process identifier for disabling the HARQ process , the number of the HARQ-enabled processes, the number of the disabled HARQ processes, the type of the HARQ-enabled process group, and the type of the HARQ-disabled process group.
  • RRC Radio Resource Control, Radio Resource Control
  • the HARQ feedback status information implicitly indicating to the UE whether to disable the HARQ feedback, comprising:
  • an activation command for activating PUCCH Physical Uplink Control Channel, uplink physical control channel
  • PUCCH Physical Uplink Control Channel, uplink physical control channel
  • the activation instruction includes:
  • the method further includes:
  • the resource configuration parameter of the PUCCH resource is issued; the resource configuration parameter is used to configure the mapping relationship.
  • the activation instruction includes: an index number of the PUCCH resource to be activated.
  • the resource configuration parameters include:
  • a method for processing HARQ feedback is provided.
  • the method is applied to a terminal, including:
  • the HARQ feedback is disabled or enabled in response to whether the HARQ feedback is disabled or not indicated implicitly by the base station.
  • the method further includes:
  • the base station In response to the number of descrambling times of the DCI being a second number of descrambling times, it is determined that the base station implicitly indicates that HARQ feedback is disabled; wherein the second number of descrambling times is different from the first number of descrambling times.
  • the method further includes:
  • the number of times of descrambling performed successfully for the DCI descrambling is determined.
  • the using C-RNTI to descramble the DCI includes:
  • the DCI is descrambled a second time using the C-RNTI.
  • the first number of descrambling times is 1; the second number of descrambling times is 2;
  • the determining the number of times of descrambling in response to the successful descrambling of the DCI includes:
  • the number of times of descrambling is determined to be the number of times of descrambling the second.
  • the shift sequence is a sequence obtained by shifting the sequence of the C-RNTI by at least one bit.
  • the method further includes:
  • the received scheduling information is used to invoke the HARQ process in the disabled HARQ process group corresponding to disabling the HARQ feedback, determine that the base station implicitly indicates that the HARQ feedback is disabled;
  • the received scheduling information is used to schedule the HARQ process in the enabled HARQ process group corresponding to the enabled HARQ feedback, it is determined that the base station implicitly indicates that the HARQ feedback is enabled.
  • the method further includes:
  • the HARQ configuration information is at least one of the following: the process identifier of the HARQ enabled process, the process identifier of the disabled HARQ process, the number of the enabled HARQ processes, the number of the disabled HARQ processes, the Describe the type of the process group that enables the HARQ process, and the type of the process group that disables the HARQ process.
  • the method further includes:
  • the base station In response to the activation instruction activating the PUCCH resource, it is determined whether the base station implicitly indicates whether to disable the HARQ feedback; wherein the PUCCH resource has a mapping relationship with disabling HARQ feedback or enabling HARQ feedback.
  • the activation instruction includes:
  • the method further includes:
  • a resource configuration parameter of the PUCCH resource is received; the resource configuration parameter is used to configure the mapping relationship.
  • the activation instruction includes: an index number of the PUCCH resource to be activated.
  • the resource configuration parameters include:
  • an apparatus for processing HARQ feedback is provided, where the apparatus is applied to a base station, including:
  • a first determining module configured to determine HARQ feedback status information
  • the indicating module is configured to implicitly indicate to the UE whether to disable the HARQ feedback according to the HARQ feedback status information.
  • an apparatus for processing HARQ feedback is provided, where the apparatus is applied to a terminal, including:
  • a feedback module configured to disable or enable the HARQ feedback in response to whether the HARQ feedback is disabled implicitly indicated by the base station.
  • an apparatus for processing HARQ feedback at least comprising: a processor and a memory for storing executable instructions that can be executed on the processor, in:
  • the executable instructions execute the steps in any of the above-mentioned processing methods for HARQ feedback.
  • a non-transitory computer-readable storage medium where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, any of the above-mentioned Steps in a method for processing HARQ feedback.
  • Embodiments of the present disclosure provide a method including enabling and disabling HARQ feedback.
  • the base station carries the indication of enabling or disabling the HARQ feedback in the information to be transmitted during the communication with the terminal in an implicit manner, and implicitly instructs the terminal to enable or disable the HARQ feedback.
  • the base station does not need to separately issue signaling for instructing to disable HARQ feedback, nor does it need to add signaling dedicated to instructing to disable HARQ in the DCI.
  • the embodiment of the present disclosure utilizes the original interactive signaling and other implicit instructions to enable or disable HARQ feedback, and does not need to modify the signaling format such as DCI, thereby facilitating compatibility with related technologies and reducing the burden of technical improvements.
  • the implicit indication does not need to add dedicated signaling or the DCI and other signaling does not need to add a field or character bit dedicated to the indication, the signaling overhead is saved.
  • FIG. 1 is a schematic structural diagram of a wireless communication system according to an exemplary embodiment
  • FIG. 2 is a schematic diagram showing the principle of a HARQ feedback mechanism according to an exemplary embodiment
  • FIG. 3 is a schematic flowchart 1 of a method for processing HARQ feedback according to an exemplary embodiment
  • FIG. 4 is a second schematic flowchart of a method for processing HARQ feedback according to an exemplary embodiment
  • FIG. 5 is a third schematic flowchart of a method for processing HARQ feedback according to an exemplary embodiment
  • FIG. 6 is a fourth schematic flowchart of a method for processing HARQ feedback according to an exemplary embodiment
  • FIG. 7 is a schematic flowchart 5 of a method for processing HARQ feedback according to an exemplary embodiment
  • FIG. 8 is a sixth schematic flowchart of a method for processing HARQ feedback according to an exemplary embodiment
  • FIG. 9 is a seventh schematic flowchart of a method for processing HARQ feedback according to an exemplary embodiment
  • FIG. 10 is a schematic flowchart 8 of a method for processing HARQ feedback according to an exemplary embodiment
  • FIG. 11A is a flowchart showing a method for processing HARQ feedback at the base station side according to an exemplary embodiment
  • FIG. 11B is a flowchart showing a method for processing HARQ feedback on the terminal side according to an exemplary embodiment
  • FIG. 12 is a schematic diagram showing the principle of dividing HARQ process groups according to an exemplary embodiment
  • FIG. 13A is a schematic diagram illustrating a method for determining a frequency domain position of PUCCH feedback according to an exemplary embodiment
  • FIG. 13B is a schematic diagram illustrating a method for determining a time domain position of PUCCH feedback according to an exemplary embodiment
  • FIG. 14 is a schematic structural diagram 1 of an apparatus for processing HARQ feedback according to an exemplary embodiment
  • FIG. 15 is a second schematic structural diagram of an apparatus for processing HARQ feedback according to an exemplary embodiment
  • FIG. 16 is a schematic diagram 1 of a physical structure of an apparatus for processing HARQ feedback according to an exemplary embodiment
  • FIG. 17 is a second schematic diagram of the physical structure of an apparatus for processing HARQ feedback according to an exemplary embodiment.
  • first, second, third, etc. may be used in embodiments of the present disclosure to describe various pieces of information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information.
  • the words "if” and “if” as used herein can be interpreted as "at the time of” or "when” or "in response to determining.”
  • an embodiment of the present disclosure takes an application scenario of access control as an example for illustrative description.
  • FIG. 1 shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure.
  • the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include: several terminals 11 and several base stations 12 .
  • the terminal 11 may be a device that provides voice and/or data connectivity to the user.
  • the terminal 11 may communicate with one or more core networks via a radio access network (RAN), and the terminal 11 may be an IoT terminal such as a sensor device, a mobile phone (or "cellular" phone) and a
  • RAN radio access network
  • the computer of the IoT terminal for example, may be a fixed, portable, pocket, hand-held, built-in computer or a vehicle-mounted device.
  • a station For example, a station (Station, STA), a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a mobile station (mobile), a remote station (remote station), an access point, a remote terminal ( remote terminal), access terminal, user terminal, user agent, user device, or user equipment (terminal).
  • the terminal 11 may also be a device of an unmanned aerial vehicle.
  • the terminal 11 may also be a vehicle-mounted device, for example, a trip computer with a wireless communication function, or a wireless terminal connected to an external trip computer.
  • the terminal 11 may also be a roadside device, for example, a street light, a signal light, or other roadside devices with a wireless communication function.
  • the base station 12 may be a network-side device in a wireless communication system.
  • the wireless communication system may be the 4th generation mobile communication (4G) system, also known as the Long Term Evolution (Long Term Evolution, LTE) system; or, the wireless communication system may also be a 5G system, Also known as new radio (NR) system or 5G NR system.
  • the wireless communication system may also be a next-generation system of the 5G system.
  • the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network, a new generation of radio access network).
  • the base station 12 may be an evolved base station (eNB) used in the 4G system.
  • the base station 12 may also be a base station (gNB) that adopts a centralized distributed architecture in a 5G system.
  • eNB evolved base station
  • gNB base station
  • the base station 12 adopts a centralized distributed architecture it usually includes a centralized unit (central unit, CU) and at least two distributed units (distributed unit, DU).
  • the centralized unit is provided with a protocol stack of a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control Protocol (Radio Link Control, RLC) layer, and a Media Access Control (Media Access Control, MAC) layer; distribution A physical (Physical, PHY) layer protocol stack is set in the unit, and the specific implementation manner of the base station 12 is not limited in this embodiment of the present disclosure.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control Protocol
  • MAC Media Access Control
  • distribution A physical (Physical, PHY) layer protocol stack is set in the unit, and the specific implementation manner of the base station 12 is not limited in this embodiment of the present disclosure.
  • a wireless connection can be established between the base station 12 and the terminal 11 through a wireless air interface.
  • the wireless air interface is a wireless air interface based on the fourth generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth generation mobile communication network technology (5G) standard, such as
  • the wireless air interface is a new air interface; alternatively, the wireless air interface may also be a wireless air interface based on a 5G next-generation mobile communication network technology standard.
  • an E2E (End to End, end-to-end) connection may also be established between the terminals 11 .
  • V2V vehicle to vehicle, vehicle-to-vehicle
  • V2I vehicle to Infrastructure, vehicle-to-roadside equipment
  • V2P vehicle to pedestrian, vehicle-to-person communication in vehicle-to-everything (V2X) communication etc. scene.
  • the above wireless communication system may further include a network management device 13 .
  • the network management device 13 may be a core network device in a wireless communication system, for example, the network management device 13 may be a mobility management entity (Mobility Management Entity) in an evolved packet core network (Evolved Packet Core, EPC). MME).
  • the network management device may also be other core network devices, such as a serving gateway (Serving GateWay, SGW), a public data network gateway (Public Data Network GateWay, PGW), a policy and charging rule functional unit (Policy and Charging Rules) Function, PCRF) or home subscriber server (Home Subscriber Server, HSS), etc.
  • the implementation form of the network management device 13 is not limited in this embodiment of the present disclosure.
  • Non-terrestrial network (NTN, Non-Terrestrial Network) communication especially satellite communication, has the characteristics of wide coverage, strong disaster resistance and large capacity.
  • NTN can be used as a supplement to the terrestrial network (5G network), providing continuous services for M2M (Machine-to-Machine, machine-to-machine), IoT (Internet Of Things, Internet of Things) equipment and mobility platform users (such as: maritime , high-speed rail) to enhance the reliability of the 5G network, or to enhance the scalability of the 5G network by directly providing broadcast or multicast services to user equipment at the edge of the network; it can also be operated independently for remote areas, islands, etc. Provides a unique service that makes web services ubiquitous.
  • the NTN network Compared with the terrestrial network, the NTN network has the characteristics of large transmission delay due to the long distance between the two communication parties. For example, in the scenario based on Geostationary Earth Orbiting (GEO, Geostationary Earth Orbiting), the maximum round-trip delay (RTT, Round Trip Time) reaches 541.46 milliseconds; in the scenario based on Low Earth Orbit (LEO, Low Earth Orbiting), the orbital height of LEO satellites At 600 km, the maximum RTT is 25.77 ms.
  • GEO Geostationary Earth Orbiting
  • LEO Low Earth Orbit
  • Hybrid Automatic Repeat Request (HARQ) mechanism is one of the most important functions in NR. Combined with link adaptation, HARQ enables efficient, reliable and low-latency data transmission in cellular networks.
  • the sender eg, UE
  • PDSCH Physical Downlink Shared Channel
  • NACK negative acknowledgment
  • the SAW process in the HARQ mechanism will reduce the link throughput due to the HARQ RTT delay.
  • multiple parallel HARQ process transmissions are supported in the HARQ mechanism, that is, the sender can initiate multiple transmissions in parallel without waiting for HARQ completion.
  • 16 HARQ processes are supported to accommodate HARQ RTT of several milliseconds in NR.
  • the NTN network Compared with the terrestrial NR network, the NTN network has the characteristics of large transmission delay, and the HARQ RTT in the NTN will be longer. This makes it impossible to provide fast feedback in the NTN network using the HARQ mechanism.
  • the number of HARQ processes supported by the HARQ protocol is insufficient to adapt to the transmission delay of tens of milliseconds to hundreds of milliseconds in the NTN network, which will lead to a decrease in the throughput of the link.
  • HARQ feedback may be disabled in NTN networks based on UE and HARQ process configuration. For example, 1 bit of information is added to the DCI signaling to indicate HARQ feedback, or HARQ feedback is disabled by multiplexing existing fields of DCI.
  • an embodiment of the present disclosure provides a method for processing HARQ feedback, and the method is applied to a base station, including:
  • Step S101 determining HARQ feedback status information
  • Step S102 according to the HARQ feedback status information, implicitly indicate to the user equipment UE whether to disable the HARQ feedback.
  • the HARQ feedback status information may be information indicating whether to disable HARQ feedback, including status information indicating enabling HARQ feedback and/or status information indicating disabling HARQ feedback.
  • the base station may determine whether HARQ feedback needs to be disabled according to each HARQ process or for different UEs. For example, the base station determines that the service corresponding to the HARQ process has higher requirements for low latency. For example, the base station determines that the maximum delay required by the service corresponding to the HARQ process is greater than a preset delay threshold, or the requirements for data information quality are low, etc. If the required maximum packet loss rate is greater than a preset threshold, it may be determined to disable HARQ feedback.
  • the transmitting end may be a base station or a terminal, and the receiving end may also be a terminal or a base station.
  • the transmitting end does not wait for the HARQ feedback from the receiving end, so there will be no retransmission.
  • the data transmission speed is further improved, and on the other hand, the quality of data transmission is reduced, for example, packet loss may occur. Therefore, HARQ feedback can be disabled for services with lower data quality requirements.
  • the base station determines that the maximum delay required by the service corresponding to the HARQ process is less than or equal to the preset delay threshold, or the requirements for data information quality are relatively high, such as the required maximum packet loss rate is less than or equal to the preset threshold, when it can be Enable HARQ feedback to improve the data quality of data transmission.
  • the base station instructs the UE to enable or disable HARQ feedback by means of an implicit indication.
  • Implicit indication means that no dedicated signaling is used to carry the indication information indicating enabling or disabling of HARQ feedback in plaintext. For example, using the signaling format of signaling indicating other information in plain text, the mapping relationship between the information form or other information indicated and enabling HARQ feedback and/or disabling HARQ feedback, thereby indirectly indicating enabling HARQ feedback or disabling HARQ feedback.
  • the scrambling mode of DCI carrying resource scheduling information, paging information and/or activation information has a mapping relationship with disabling or enabling the HARA feedback.
  • the DCI of other information can complete the indication of disabling or enabling HARA feedback without adding additional DCI or occupying the DCI bit overhead.
  • the aforementioned scheduling information can be used for resource scheduling; the paging information can be used for paging of the UE; the activation information can be used to activate pre-scheduled or configured transmission resources.
  • the scrambling sequence is different.
  • different times of scrambling the DCI are used to represent the indication of enabling or disabling HARQ feedback respectively;
  • the identification of the HARQ process is used to distinguish different processes for enabling or disabling HARQ feedback.
  • the base station does not need to send an instruction for enabling or disabling HARQ feedback to the UE separately, nor does it need to add a field or an indicator bit to the DCI signaling. Instead, the corresponding relationship between different information in signaling for indicating other information and enabling or disabling HARQ feedback can be used to realize the instruction of enabling or disabling HARQ feedback, thereby effectively saving signaling overhead.
  • the UE without changing the protocol and signaling format of information transmission between the base station and the UE, the UE can be controlled to disable HARQ feedback when the HARQ feedback mechanism is not required or the requirement for low latency is high, thereby improving the Data transfer rate, lower latency.
  • implicitly indicating to the UE whether to disable the HARQ feedback according to the HARQ feedback status information comprising:
  • the downlink control information DCI is scrambled at least once through the C-RNTI.
  • the DCI may be scrambled by using the C-RNTI.
  • the C-RNTI is a temporary identification of the cell's wireless network, and is a dynamic identification assigned by the base station to the UEs that have successfully joined the network, uniquely identifying the UEs in a cell.
  • the C-RNTI is a 16-bit sequence
  • the scrambling process using the C-RNTI may be the multiplication of the C-RNTI sequence and the DCI to obtain the scrambled DCI.
  • sequences such as SI-RNTI (System Message Radio Network Temporary Identifier) and RA-RNTI (Random Radio Network Temporary Identifier) can also be used for scrambling.
  • SI-RNTI System Message Radio Network Temporary Identifier
  • RA-RNTI Random Radio Network Temporary Identifier
  • the scrambling performed on the DCI with different times of scrambling may be the operation of performing multiple scrambling by using the C-RNTI sequence, or may be using the C-RNTI sequence and shifting or changing the scrambling operation.
  • the C-RNTI sequences are respectively scrambled multiple times.
  • the DCI can be scrambled by using the C-RNTI sequence without introducing new indication information or a dedicated scrambling sequence, thus realizing the function of implicitly indicating enabling or disabling HARQ feedback.
  • step S102 according to the HARQ feedback status information, implicitly indicating to the UE whether to disable the HARQ feedback, including:
  • Step S201 in response to the HARQ feedback status information being that the HARQ feedback is enabled, determine the first scrambling times for scrambling the DCI;
  • Step S202 delivering the DCI scrambled with the first scrambling times.
  • the DCI is carried by the downlink control channel (PDCCH), and is used to send downlink control related information to the UE, including uplink and downlink resource allocation, HARQ information, and power control.
  • PDCCH downlink control channel
  • the scrambling may be to perform arithmetic processing on the signal by using a predetermined sequence, and then transmit it, which can effectively reduce the signal interference between adjacent ones.
  • the UE After receiving the DCI sent by the base station, the UE needs to perform descrambling. After the UE descrambles the DCI and the verification is successful, it can obtain the relevant indication of the base station and process it.
  • the DCI may be scrambled once by using a predetermined sequence, and the UE may perform descrambling once after receiving the DCI. If the UE descrambling is successful, the acquisition of DCI is successful.
  • the above-mentioned process of scrambling the DCI can be used to realize the above-mentioned implicit indication. That is, different scrambling times are used to differentiate indications to enable or disable HARQ feedback.
  • the number of times of scrambling corresponding to the instruction for enabling HARQ feedback may be preset to be the first number of times of scrambling.
  • the first number of scramblings is different from the number of scramblings for which HARQ feedback is disabled.
  • the UE when it receives the DCI, it can correspondingly perform descrambling at least once.
  • the UE can correspondingly determine the number of times of scrambling. Therefore, if the descrambling succeeds, the corresponding descrambling times are the same as the first scrambling times, and the UE may learn that the base station indicates to enable the above-mentioned HARQ feedback.
  • the base station can implicitly instruct the UE to enable HARQ feedback by scrambling the DCI for the first scrambling times by using the fixed format of the DCI in the existing communication protocol. Therefore, there is no need to add a new field or a character bit dedicated to instructing HARQ to be enabled or disabled, and it is not necessary to change the format of the DCI.
  • the first number of scrambling times is one.
  • step S102 according to the HARQ feedback status information, implicitly indicating to the UE whether to disable the HARQ feedback, including:
  • Step S203 in response to the HARQ feedback status information indicating that HARQ feedback is disabled, determine a second scrambling number of times for scrambling the DCI, where the second scrambling number is different from the first scrambling number;
  • Step S204 delivering the DCI scrambled with the second scrambling times.
  • the base station may perform scrambling on the DCI for a second scrambling number to indicate disabling HARQ feedback.
  • the UE descrambles the DCI at least once, and if the descrambling times are the same as the second scramble times when the descrambling is successful, it can be determined that the base station's instruction is to disable HARQ feedback.
  • the second number of scrambling times is two.
  • steps S201 to S202 and steps S203 to S204 are in parallel.
  • steps S201 to S202 are performed; when HARQ feedback is disabled, steps S203 to S202 are performed. Step S204.
  • the DCI is scrambled at least once by the C-RNTI, including:
  • the DCI is scrambled a first time with the C-RNTI; and the DCI is scrambled a second time with a shift sequence obtained by shifting the C-RNTI .
  • the above-mentioned first scrambling times corresponding to enabling HARQ feedback is once, that is, when HARQ feedback is enabled, a normal scrambling process is performed on the DCI.
  • the HARQ related information carried in the DCI can also be used normally.
  • one scrambling may be added on the basis of the first scrambling times, that is, scrambling is performed twice in total.
  • the UE needs to perform descrambling twice before descrambling is successful. That is to say, if the UE performs descrambling once and the descrambling succeeds, it can be determined that the instruction of the base station is to enable HARQ feedback. Indicates that HARQ feedback is disabled.
  • the shift sequence is a sequence obtained by shifting the sequence of the C-RNTI by at least one bit.
  • the C-RNTI may be used to perform sequence shift of at least one bit to obtain the above-mentioned shift sequence.
  • the C-RNTI sequence is a binary sequence, and 1 is added to the sequence to change each bit, thereby obtaining a shifted sequence.
  • the scrambling sequence for performing the second scrambling on the DCI may be: the reverse sequence of the C-RNTI, for example, the reverse sequence is obtained by negating the binary sequence of the C-RNTI allocated to the UE . After the inversion operation, the original "0" in the C-RNTI is changed to "1", and the original "1" is changed to "0".
  • step S102 according to the HARQ feedback status information, implicitly indicating to the UE whether to disable the HARQ feedback, including:
  • Step S301 in response to the HARQ feedback status information indicating that HARQ feedback is disabled, issue scheduling information for scheduling HARQ processes, where the scheduling information is used to schedule HARQ processes in the disabled HARQ process group that disables the HARQ feedback; or
  • Step S302 in response to the HARQ feedback status information being that HARQ feedback is enabled, deliver scheduling information for scheduling HARQ processes, where the scheduling information is used to schedule HARQ processes in the disabled HARQ process group that enables the HARQ feedback.
  • both the sender and the receiver In the process of data transmission and reception between the base station and the UE, both the sender and the receiver usually use the HARQ stop-and-wait protocol to send data. After the sender sends a data packet, it stops and waits for confirmation information. The receiving end feeds back positive (ACK) or negative (NACK) acknowledgment information. But stopping waiting every time you send will result in very low throughput of the data link. Therefore, multiple parallel HARQ processes can be utilized to improve the overall throughput.
  • ACK positive
  • NACK negative
  • the base station can choose to schedule different HARQ processes to send data to the UE.
  • the parallel HARQ process in the above-mentioned HARQ entity is used to realize the implicit indication that HARQ feedback is disabled.
  • the base station may select a part of the HARQ process as the disabled HARQ process, and when the base station schedules the part of the disabled HARQ process, it will simultaneously deliver the scheduling information to the UE.
  • the scheduling information may be used to identify the HARQ process, eg, the scheduling information may include an identification of the HARQ process. Therefore, the UE can confirm whether the corresponding HARQ process belongs to the pre-agreed disabled HARQ process through the received scheduling information.
  • the base station only needs to schedule different HARQ processes, so as to realize the implicit indication of disabling or enabling the HARQ process.
  • the delay of this part of the process can be reduced, which is beneficial to improve the transmission efficiency of the corresponding process for different services.
  • the overall data throughput of the communication link can be further improved, and the delay can be reduced.
  • an implicit indication of enabling or disabling HARQ feedback is achieved using the classification of different HARQ processes. In this way, there is no need to add dedicated signaling for indication, thereby saving signaling overhead, and there is no need to change the existing signaling format.
  • the above-mentioned HARQ process further includes enabling the HARQ process.
  • the UE may be implicitly instructed to enable HARQ feedback. For example, for a process corresponding to a service that requires higher accuracy in data transmission or requires lower latency, it can be classified as a HARQ process.
  • the UE determines that the received scheduling information is the scheduling information for enabling the HARQ process according to the information such as the process number and the identifier carried in the scheduling information, the HARQ feedback is enabled.
  • the base station implements an implicit indication of enabling or disabling HARQ feedback by dividing the HARQ process into an enabling HARQ process group and a disabling HARQ process group, so there is no need to add additional fields or character bits or other instructions to to instruct.
  • different processing methods can be implemented for different types of HARQ processes, which is beneficial to flexibly control HARQ processes corresponding to different service requirements.
  • the method further includes:
  • the HARQ configuration information is delivered to the UE through RRC signaling, wherein the HARQ configuration information is at least one of the following: the process identifier of the HARQ process enabled, the process identifier of the disabled HARQ process, the number of the enabled HARQ process, the number of the disabled HARQ processes, the type of the HARQ-enabled process group, and the type of the HARQ-disabled process group.
  • the type of the HARQ process-enabled process group may be the HARQ-enabled process group; the type of the HARQ-disabled process group may be the HARQ-disabled process group.
  • the UE may be informed which process identifiers correspond to the HARQ process enabled and which process identifiers correspond to the disabled HARQ process. For example, each HARQ is numbered, the total number M of HARQs is notified to the UE, and at the same time, the first N HARQs belong to the HARQ-enabled process group, and the remaining M-N belong to the HARQ-disabled process group. For another example, the numbers of enabling HARQ processes and disabling HARQ processes are directly indicated in the HARQ configuration information.
  • the base station uses RRC signaling to deliver HARQ configuration information to the UE to inform the UE of the grouping of the HARQ process.
  • the base station only needs to enable HARQ feedback or disable HARQ during subsequent HARQ process scheduling.
  • the feedback indication schedules the HARQ process in the corresponding process group, so that the implicit indication of enabling or disabling the HARQ process can be realized.
  • the process identifier of the HARQ-enabled process and the process identifier of the HARQ-disabled process may also be a representation that directly indicates that the HARQ process belongs to HARQ enabled or disabled. For example, a bit in the HARQ ID is used to distinguish, "0" means disable, "1" means enable.
  • the above-mentioned HARQ configuration information may include the number of enabled and disabled HARQ processes. In this way, if the total number of HARQ processes is M, the first N are HARQ-enabled processes, and the remaining M-N are HARQ-disabled processes. Then, the base station may inform the UE of the number N of HARQ enabled by the HARQ configuration information. In this way, after receiving the HARQ scheduling information, if the number of the HARQ process is less than or equal to N, the UE can determine that the base station's instruction is to enable HARQ feedback; if the number of the HARQ process is greater than N, it can determine that the base station's instruction is to disable HARQ feedback.
  • the base station only needs to inform the UE of the number of HARQ processes to enable and/or disable, and then schedule the corresponding HARQ processes, so as to realize the above-mentioned implicit indication, thereby saving signaling expenses.
  • step S101 in response to whether to disable HARQ feedback, implicitly indicating to the UE whether to disable the HARQ feedback, including:
  • Step S401 according to the HARQ feedback status information, issue an activation instruction for activating PUCCH resources; the PUCCH resources have a mapping relationship with disabling HARQ feedback or enabling HARQ feedback.
  • the resource set of the PUCCH may be preset.
  • the resource set of the PUCCH includes one or more PUCCH resources, and the PUCCH resources may include HARQ feedback resources for transmitting HARQ feedback.
  • the PUCCH resource set may be dynamically defined by RRC, or may be specified in a protocol.
  • PUCCH resources are mainly used for HARQ-ACK feedback, SR (Scheduleing Request, uplink scheduling request) request and CSI (Channel State Information, channel state information) feedback sent by the UE to the base station, and so on.
  • the base station may deliver the index of the PUCCH resource to the UE, indicating the PUCCH resource used by the UE, and then implement resource configuration.
  • a pre-designated PUCCH resource may be used to indicate an instruction to disable HARQ feedback.
  • the base station sends a corresponding index to activate the PUCCH, and can instruct the UE to disable HARQ feedback.
  • the activation instruction includes:
  • the above activation instruction may be carried in the DCI or SIB.
  • the UE feeds back information according to the PUCCH indicated to be used by the activation instruction. If the PUCCH resource corresponding to the activation instruction is a resource that represents disabling HARQ feedback, the UE may determine that the base station's instruction is disabling HARQ feedback. Conversely, if the PUCCH resource corresponding to the activation command is to enable HARQ feedback, the UE can use the activated PUCCH to perform corresponding HARQ feedback.
  • the method further includes:
  • the resource configuration parameter of the PUCCH resource is issued; the resource configuration parameter is used to configure the mapping relationship.
  • the UE before issuing an instruction for activating and disabling HARQ feedback, the UE needs to be informed of the states of enabling or disabling HARQ resources corresponding to different PUCCH resources. Therefore, the base station can pre-deliver resource configuration parameters of the PUCCH resources that have a corresponding relationship with whether to disable the HARQ feedback.
  • the resource configuration parameters carry numbers or identifiers corresponding to different PUCCHs, wherein a designated identifier may be set as a PUCCH resource for which HARQ feedback is disabled, and of course, numbers or identifiers without corresponding actual resources may also be used. , to indicate that HARQ feedback is disabled. For example, in a field for indicating PUCCH in DCI, if different values represent different positions in the PUCCH resource set, at least one of the values may be designated as the position of the PUCCH resource for which HARQ feedback is disabled.
  • the UE uses the PUCCH resource for HARQ feedback. At this time, it is set that there is no value defined in this field, for example, a value of 0 means that HARQ feedback is disabled. Then, if the instruction in the DCI is a value of 0, the resource for disabling HARQ feedback is activated, and the UE may determine to disable HARQ feedback according to the activation instruction.
  • the base station uses the downlink control instruction to correspondingly activate the HARQ feedback-disabled resource specified in the resource configuration parameter, so as to realize the above-mentioned implicitly instructing to disable the HARQ feedback function.
  • the activation instruction includes: an index number of the PUCCH resource to be activated.
  • the above-mentioned activation instruction may include an index number indicating the PUCCH resource, and the UE may determine the position of the activated PUCCH resource according to the index number after receiving the activation instruction. If the PUUCH resource is the resource for enabling HARQ feedback specified in the above resource configuration parameter, the UE may determine that the base station indicates that HARQ feedback is enabled. Conversely, if the PUCCH resource is a resource specified in the resource configuration parameter for which HARQ feedback is disabled, the UE may determine that the base station indicates that HARQ feedback is disabled.
  • the resource configuration parameters include:
  • the PUCCH resources include time-domain resources and frequency-domain resources, and the frequency-domain resources correspond to available frequency bands of the PUCCH.
  • Multiple frequency bands in the PUCCH resource set and corresponding identifiers, such as number, index number, etc., are used to determine the frequency domain position of the PUCCH resource in the resource set.
  • the correspondence between each frequency domain resource and the identifier in the PUCCH resource set may be defined in the RRC, or may be specified according to the protocol.
  • the PUCCH time domain resource represents the time slot occupied by the UE to feed back uplink information. Similar to the frequency domain resources, the RRC or the protocol is also used to specify the correspondence between the time domain resources and the identifiers in the PUCCH resource set.
  • an embodiment of the present disclosure provides a method for processing HARQ feedback.
  • the method is applied to a terminal, including:
  • Step S501 in response to whether the HARQ feedback is disabled or not indicated implicitly by the base station, disable or enable the HARQ feedback.
  • the terminal is an electronic device having a function of communicating with a base station, including the above-mentioned UE.
  • UE the terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's terminal's control circuitry
  • the UE may determine whether to disable or enable HARQ feedback indicated by the base station. Thereby HARQ feedback is enabled or disabled accordingly.
  • the base station uses the implicit indication to indicate and does not change the signaling format, the UE does not need to correspondingly change the format of the received signaling.
  • the base station can negotiate the rules of implicit indication in advance with the UE, and the UE can decode the corresponding base station indication and disable HARQ feedback according to the received signaling sent by the base station, thereby improving the efficiency of data transmission and reducing the delay.
  • the method further includes:
  • Step S601 receive DCI
  • Step S602 in response to the number of descrambling times of the DCI being the first number of descrambling times, determine that the base station implicitly indicates to enable the HARQ feedback; or
  • Step S603 in response to the number of descrambling times of the DCI being a second number of descrambling times, determine that the base station implicitly indicates that HARQ feedback is disabled; wherein the second number of descrambling times is different from the first number of descrambling times.
  • the manner for implicitly indicating the above-mentioned enabling or disabling of HARQ is the number of scrambling times of the DCI. Therefore, the UE performs corresponding descrambling, and when descrambling is successful, the number of times of scrambling can be obtained according to the number of descrambling times, and then the implicit indication of the base station can be obtained.
  • the first number of times of descrambling corresponds to the number of times of first scrambling in the foregoing embodiment
  • the second number of times of descrambling corresponds to the number of times of second scrambling in the foregoing embodiment. Therefore, if the number of descrambling times when descrambling is successful is the first number of descrambling times, the corresponding base station indication is an indication of the first number of scrambling times, that is, an indication of enabling HARQ feedback. If the number of descrambling times when descrambling is successful is the second number of descrambling times, the corresponding base station indication is an indication of the second number of scrambling times, that is, an indication that HARQ feedback is disabled.
  • the method further includes:
  • the number of times of descrambling performed successfully for the DCI descrambling is determined.
  • the UE Since the base station can use the C-RNTI to scramble the DCI, the UE correspondingly uses the C-RNTI for descrambling.
  • the C-RNTI may be pre-assigned to the UE by the base station.
  • the using C-RNTI to descramble the DCI includes:
  • the DCI is descrambled a second time using a shift sequence obtained by shifting the C-RNTI.
  • the base station scrambles the DCI twice by using the C-RNTI and the shift sequence of the C-RNTI respectively. Therefore, the UE also uses the C-RNTI and the shift sequence of the C-RNTI for descrambling.
  • the UE fails to descramble for the first time, it means that the number of descrambling times is the first number of descrambling times, and at this time, it can be determined that the base station indicates that HARQ feedback is disabled. However, since the DCI also carries other indication information, the UE can descramble the DCI for the second time. Of course, if the second descrambling is still unsuccessful, it may be an error in information reception, or the DCI information fails.
  • the UE may first use the above-mentioned shift sequence to descramble the DCI for the first time, so as to determine whether the base station has performed the second scramble based on disabling HARQ feedback. If the first descrambling fails, it means that the base station does not disable HARQ feedback. At this time, the C-RNTI sequence can be used to descramble the DCI for the second time to obtain other information of the DCI.
  • the first number of descrambling times is 1; the second number of descrambling times is 2;
  • the determining the number of times of descrambling in response to the successful descrambling of the DCI includes:
  • the number of times of descrambling is determined to be the number of times of descrambling the second.
  • the shift sequence is a sequence obtained by shifting the sequence of the C-RNTI by at least one bit.
  • the method further includes:
  • Step S701 receiving scheduling information for scheduling HARQ processes
  • Step S702 if the received scheduling information is used to invoke the HARQ process in the disabled HARQ process group corresponding to disabling the HARQ feedback, determine that the base station implicitly indicates that the HARQ feedback is disabled;
  • Step S703 If the received scheduling information is used to schedule HARQ processes in the HARQ-enabled process group corresponding to enabling HARQ feedback, determine that the base station implicitly indicates to enable the HARQ feedback.
  • the base station correspondingly instructs to enable or disable HARQ feedback according to scheduling information of different HARQ processes.
  • the scheduling information received by the UE is used for scheduling to disable the HARQ process
  • the UE can directly determine that the base station indicates that the HARQ feedback is disabled. Therefore, the UE can disable the HARQ feedback when sending and receiving data corresponding to the process subsequently.
  • the UE if the scheduling information received by the UE is to enable the HARQ process, then the UE enables HARQ feedback when subsequently sending and receiving data corresponding to the process.
  • the UE can confirm whether the scheduled HARQ process belongs to the enabled HARQ process or the disabled HARQ process, and can determine the indication of the base station.
  • the method further includes:
  • the UE may predetermine the corresponding relationship between each HARQ process and enabling or disabling HARQ feedback according to the configuration information. For example, HARQ processes whose numbers of HARQ processes are less than or equal to N are HARQ-enabled processes, and the remaining processes are HARQ-disabled processes. In this way, after receiving the scheduling instruction subsequently, the UE can directly determine whether to disable the HARQ process according to the identifier of the scheduled HARQ process.
  • the HARQ configuration information is at least one of the following: the process identifier of the HARQ enabled process, the process identifier of the disabled HARQ process, the number of the enabled HARQ processes, the number of the disabled HARQ processes, the Describe the type of the process group that enables the HARQ process, and the type of the process group that disables the HARQ process.
  • the HARQ configuration information has been introduced in detail in the above-mentioned embodiments on the base station side, and details are not repeated here.
  • the method further includes:
  • Step S801 receiving an activation instruction
  • Step S802 Activate the PUCCH resource in response to the activation instruction, and determine whether the base station implicitly indicates whether to disable the HARQ feedback; wherein the PUCCH resource has a mapping relationship with disabling HARQ feedback or enabling HARQ feedback.
  • the UE After receiving the activation instruction issued by the base station, the UE performs information feedback based on the PUCCH resources indicated by the activation instruction. If the PUCCH resource corresponding to the activation instruction is to disable HARQ feedback, the UE does not perform HARQ feedback.
  • the activation instruction includes:
  • the method further includes:
  • a resource configuration parameter of the PUCCH resource is received; the resource configuration parameter is used to configure the mapping relationship.
  • the UE Since the UE does not know the identifier or number corresponding to the PUCCH resource for which HARQ feedback is disabled specified by the base station in advance, the corresponding relationship between the indication of enabling or disabling HARQ feedback and each PUCCH resource can be obtained according to the resource configuration parameter. In this way, after the activation instruction of the base station is subsequently received, it can be determined whether to disable HARQ feedback according to the activated PUCCH resources indicated by the activation instruction.
  • the activation instruction includes: an index number of the PUCCH resource to be activated.
  • the resource configuration parameters include:
  • time domain resources and frequency domain resources in the PUCCH resources have been introduced in detail in the above embodiments, and will not be repeated here.
  • the DCI is scrambled twice by using 1-bit HARQ disable indication information to implicitly indicate the HARQ feedback state.
  • the HARQ disable indication information takes a value of "0” or "1", where "0” indicates that HARQ feedback is enabled, and "1" indicates that HARQ feedback is disabled.
  • the flowchart of the implicit indication performed by the base station side is shown in FIG. 11A , and the base station side determines the scrambling mode to be adopted for the DCI according to the feedback state of the HARQ process. It includes the following steps:
  • Step S11 judging whether to disable HARQ feedback
  • Step S12 if HARQ feedback is disabled in the HARQ process, the DCI is scrambled with 1-bit indication information for disabling HARQ feedback;
  • Step S13 after the first scrambling in step S12, use the C-RNTI to scramble the DCI twice; or, if the HARQ process enables HARQ feedback, skip step S12 and directly use the C-RNTI to scramble the DCI .
  • Step S21 using the C-RNTI sequence for descrambling
  • Step S22 carry out CRC check, judge whether descrambling is successful
  • Step S23 if the descrambling fails, shift the C-RNTI sequence by 1 bit to obtain a second descrambling sequence, and use the second descrambling sequence for descrambling;
  • Step S24 using the second descrambling sequence to descramble successfully, then disable HARQ feedback
  • Step S25 if the first descrambling is successful, enable HARQ feedback.
  • Two HARQ process groups are divided in the HARQ entity, which are the HARQ process group enabled and the HARQ process group disabled. Wherein, the processes belonging to the HARQ-enabled process group are enabled with HARQ feedback, and the processes belonging to the disabled HARQ process group are disabled with HARQ feedback.
  • the number of HARQ processes supported in the NTN network is M.
  • the size of the HARQ-enabled process group 11 is N, that is, the first N HARQ processes 12 belong to the HARQ-enabled process group, and the remaining M-N HARQ processes 12 belong to the HARQ-disabled process group 21 .
  • the type and size of the HARQ process group may be pre-configured through RRC signaling.
  • the base station side selects the HARQ process in the corresponding HARQ process group for scheduling. For example, when the HARQ process is disabled for HARQ feedback, the base station schedules the HARQ process in the disabled HARQ process group. In this way, when the UE receives the ID of the HARQ process, it can judge the feedback state of the HARQ process according to the size of the HARQ process group configured in the RRC signaling.
  • a default parameter set ⁇ PUCCH resource, dl-DataToUL-ACK ⁇ for disabling the HARQ feedback function may be set in the RRC parameters, Among them, dl-DataToUL-ACK is the feedback data resource of the high layer.
  • the base station by setting the first data of the PUCCH resource and the first data of d1-DataToUL-ACK to a value that has not been used in the protocol to indicate that HARQ feedback is disabled, and then the base station by setting the PUCCH resource indication field of the DCI (PUCCH resource indicator) is 0 and the HARQ feedback time slot indicator field (PDSCH-to-HARQ_feedback timing indicator) of the PDSCH is 0, to realize the activation of the data for which HARQ feedback is disabled in the above parameter set.
  • the UE after receiving the DCI, the UE can determine the time-frequency domain position of the PUCCH feedback indicating that HARQ feedback is disabled, thereby realizing the dynamic indication of disabling HARQ feedback in the HARQ process.
  • the method for determining the frequency domain position of PUCCH feedback on the user side is shown in Figure 13A.
  • the PUCCH resource indication field or the PUCCH common resource in the system message 1 (SIB1) can be used to indicate the PUCCH feedback
  • SIB1 system message 1
  • the frequency domain position of the PUCCH feedback can be determined in the PUCCH resource set by using the index number.
  • the PUCCH resource set may be dynamically defined by RRC, or may be specified according to a predetermined protocol.
  • the method for determining the time domain position of PUCCH feedback on the user side is shown in Figure 13B, through the HARQ feedback time slot indication field of PDSCH in various formats of DCI (such as DCI format 1-0/1-1/1-2),
  • the index number in the RRC parameter dl-DataToUL-ACK table can be determined, and then the dl-DataToUL-ACK table can be queried according to the index number to determine the value of K1, where K1 represents the time domain relationship between PDSCH and HARQ feedback.
  • the disabling of HARQ feedback can be implicitly indicated, so as to realize HARQ disabling based on the UE and the HARQ process.
  • an embodiment of the present disclosure further provides an apparatus 100 for processing HARQ feedback for processing HARQ feedback, which is applied to a base station and includes:
  • a first determining module 110 configured to determine HARQ feedback status information
  • the indicating module 120 implicitly indicates to the UE whether to disable the HARQ feedback according to the HARQ feedback status information.
  • the indicating module includes:
  • a scrambling module configured to perform scrambling on the DCI at least once through the C-RNTI.
  • the indicating module includes:
  • a first determination submodule configured to determine a first scrambling number of times for scrambling the DCI in response to the HARQ feedback status information being that HARQ feedback is enabled
  • a first delivery sub-module configured to deliver the DCI scrambled with the first number of scrambling times.
  • the first number of scrambling times is one.
  • the indicating module includes:
  • a second determining submodule configured to determine a second number of scrambling times for scrambling the DCI in response to the HARQ feedback status information indicating that HARQ feedback is disabled;
  • the second delivery submodule is configured to deliver the DCI scrambled with the second scrambling number of times.
  • the second number of scrambling times is two.
  • the scrambling module includes:
  • a first scrambling sub-module configured to use C-RNTI to scrambling the DCI for the first time in response to the HARQ feedback status information indicating that the HARQ feedback is disabled;
  • the second scrambling sub-module is configured to perform second scrambling on the DCI by using the shift sequence obtained by shifting the C-RNTI.
  • the shift sequence is a sequence obtained by shifting the sequence of the C-RNTI by at least one bit.
  • the indicating module includes:
  • the third sending submodule is configured to, in response to the HARQ feedback status information indicating that HARQ feedback is disabled, deliver scheduling information for scheduling HARQ processes, where the scheduling information is used to schedule the disabled HARQ process group in which the HARQ feedback is disabled. the HARQ process; or
  • the fourth sending sub-module is configured to, in response to the HARQ feedback status information being to enable HARQ feedback, to deliver scheduling information for scheduling HARQ processes, where the scheduling information is used to schedule the disabled HARQ process groups that enable the HARQ feedback the HARQ process.
  • the apparatus further includes:
  • a first issuing module configured to issue HARQ configuration information to the UE through RRC signaling, wherein the HARQ configuration information includes at least one of the following: the process identifier for enabling the HARQ process, the process identifier for disabling the HARQ process, The number of the HARQ-enabled processes, the number of the disabled HARQ processes, the type of the HARQ-enabled process group, the type of the HARQ-disabled process group.
  • the indicating module includes:
  • the fourth issuing submodule is configured to issue an activation instruction for activating PUCCH resources according to the HARQ feedback status information; the PUCCH resources have a mapping relationship with disabling HARQ feedback or enabling HARQ feedback.
  • the activation instruction includes:
  • the apparatus further includes:
  • a fifth issuing submodule is configured to issue resource configuration parameters of the PUCCH resources before issuing the instruction; the resource configuration parameters are used to configure the mapping relationship.
  • the activation instruction includes: an index number of the PUCCH resource to be activated.
  • the resource configuration parameters include:
  • an embodiment of the present disclosure further provides an apparatus 200 for processing HARQ feedback, applied to a terminal, including:
  • a disabling module 210 configured to disable the HARQ feedback in response to the HARQ feedback disabling implicitly indicated by the base station;
  • the enabling module 220 is configured to enable the HARQ feedback in response to the HARQ feedback enabled implicitly indicated by the base station.
  • the apparatus further includes:
  • a first receiving module configured to receive DCI
  • a second determining module configured to determine that the base station implicitly indicates to enable the HARQ feedback in response to the number of times of descrambling of the DCI being the first number of times of descrambling;
  • a third determining module configured to determine that the base station implicitly indicates that HARQ feedback is disabled in response to the number of descrambling times of the DCI being a second number of descrambling times; wherein the second number of descrambling times is different from the first number of descrambling times number of disturbances.
  • the apparatus further includes:
  • a descrambling module configured to descramble the DCI by using the C-RNTI
  • the fourth determining module is configured to determine the number of times of descrambling performed successfully for the DCI descrambling.
  • the descrambling module includes:
  • a first descrambling sub-module configured to perform the first descrambling on the DCI by using the shift sequence obtained by shifting the C-RNTI;
  • the second descrambling sub-module is configured to use the C-RNTI to descramble the DCI for the second time in response to the failure of the first descrambling.
  • the first number of descrambling times is 1; the second number of descrambling times is 2;
  • the fourth determination module includes:
  • a third determining submodule configured to determine the number of times of descrambling as the number of times of descrambling in response to the success of the first descrambling
  • the fourth determining submodule is configured to, in response to the first descrambling failure and the second descrambling success, determine the descrambling number of times as the second descrambling number of times.
  • the shift sequence is a sequence obtained by shifting the sequence of the C-RNTI by at least one bit.
  • the apparatus further includes:
  • a second receiving module configured to receive scheduling information for scheduling the HARQ process
  • a fifth determining module configured to determine that the base station implicitly indicates that the HARQ feedback is disabled if the received scheduling information is used to invoke the HARQ process in the disabled HARQ process group corresponding to disabling the HARQ feedback;
  • the sixth determining module is configured to determine that the base station implicitly indicates to enable the HARQ feedback if the received scheduling information is used to schedule the HARQ process in the enabled HARQ process group corresponding to the enabled HARQ feedback.
  • the apparatus further includes:
  • the third receiving module is configured to receive RRC signaling including HARQ configuration information.
  • the HARQ configuration information is at least one of the following: the process identifier of the HARQ enabled process, the process identifier of the disabled HARQ process, the number of the enabled HARQ processes, the number of the disabled HARQ processes, the Describe the type of the process group that enables the HARQ process, and the type of the process group that disables the HARQ process.
  • the apparatus further includes:
  • a fourth receiving module configured to receive an activation instruction
  • a sixth determining module configured to activate the PUCCH resource in response to the activation instruction, and determine whether the base station implicitly indicates whether to disable the HARQ feedback; wherein, the PUCCH resource has a mapping relationship with disabling HARQ feedback or enabling HARQ feedback .
  • the activation instruction includes:
  • the apparatus further includes:
  • a fifth receiving module configured to receive resource configuration parameters of the PUCCH resource before receiving the activation instruction; the resource configuration parameters are used to configure the mapping relationship.
  • the activation instruction includes: an index number of the PUCCH resource to be activated.
  • the resource configuration parameters include:
  • FIG. 16 is a structural block diagram of an apparatus for processing HARQ feedback provided by an embodiment of the present disclosure.
  • the device for processing the HARQ feedback may be the UE.
  • the HARQ feedback processing apparatus 800 may be a mobile phone, computer, digital broadcast user equipment, messaging equipment, game console, tablet device, medical equipment, fitness equipment, personal digital assistant, and the like.
  • the HARQ feedback processing apparatus 800 may include at least one of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814 , and communication component 816 .
  • the processing component 802 generally controls the overall operation of the processing device 800 for HARQ feedback, such as operations associated with display, phone calls, data communications, camera operations, and recording operations.
  • the processing component 802 may include at least one processor 820 to execute instructions to perform all or part of the steps of the above-described methods. Additionally, processing component 802 may include at least one module that facilitates interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.
  • Memory 804 is configured to store various types of data to support operation of apparatus 800 for processing HARQ feedback. Examples of such data include instructions for any application or method operating on the HARQ feedback processing device 800, contact data, phonebook data, messages, pictures, videos, and the like. Memory 804 may be implemented by any type of volatile or nonvolatile storage device or combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic or Optical Disk Magnetic Disk
  • Power supply component 806 provides power to various components of HARQ feedback processing device 800 .
  • Power supply components 806 may include a power management system, at least one power supply, and other components associated with generating, managing, and distributing power to processing device 800 for HARQ feedback.
  • the multimedia component 808 includes a screen that provides an output interface between the HARQ feedback processing means 800 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.
  • the touch panel includes at least one touch sensor to sense touch, swipe, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or swipe action, but also detect wake-up time and pressure associated with the touch or swipe action.
  • the multimedia component 808 includes a front-facing camera and/or a rear-facing camera.
  • the front camera and/or the rear camera may receive external multimedia data.
  • Each of the front and rear cameras can be a fixed optical lens system or have focal length and optical zoom capability.
  • Audio component 810 is configured to output and/or input audio signals.
  • the audio component 810 includes a microphone (MIC) configured to receive external audio signals when the HARQ feedback processing device 800 is in an operating mode, such as a calling mode, a recording mode, and a speech recognition mode.
  • the received audio signal may be further stored in memory 804 or transmitted via communication component 816 .
  • audio component 810 also includes a speaker for outputting audio signals.
  • the I/O interface 812 provides an interface between the processing component 802 and a peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to: home button, volume buttons, start button, and lock button.
  • Sensor assembly 814 includes at least one sensor for providing status assessment of various aspects for processing apparatus 800 for HARQ feedback.
  • the sensor component 814 can detect the on/off state of the device 800, the relative positioning of components, such as the display and keypad of the HARQ feedback processing device 800, and the sensor component 814 can also detect the HARQ feedback processing device 800 Or the position of a component of the HARQ feedback processing device 800 changes, the presence or absence of user contact with the HARQ feedback processing device 800, the orientation or acceleration/deceleration of the HARQ feedback processing device 800 and the temperature of the HARQ feedback processing device 800 changes.
  • Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact.
  • Sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • the communication component 816 is configured to facilitate wired or wireless communication between the HARQ feedback processing apparatus 800 and other devices.
  • the apparatus 800 for processing HARQ feedback can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof.
  • the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication.
  • the NFC module may be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • the HARQ feedback processing apparatus 800 may be implemented by at least one application specific integrated circuit (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field Programmable gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation for carrying out the above method.
  • ASIC application specific integrated circuit
  • DSP digital signal processor
  • DSPD digital signal processing device
  • PLD programmable logic device
  • FPGA field Programmable gate array
  • controller microcontroller, microprocessor or other electronic component implementation for carrying out the above method.
  • non-transitory computer-readable storage medium including instructions, such as a memory 804 including instructions, which are executable by the processor 820 of the HARQ feedback processing apparatus 800 to accomplish the above method.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.
  • an embodiment of the present disclosure shows the structure of another apparatus for processing HARQ feedback.
  • the apparatus for processing HARQ feedback may be the base station involved in the embodiment of the present disclosure.
  • the apparatus 900 for processing HARQ feedback may be provided as a network device.
  • HARQ feedback processing apparatus 900 includes a processing component 922, which further includes at least one processor, and a memory resource represented by memory 932 for storing instructions executable by the processing component 922, such as an application program.
  • An application program stored in memory 932 may include one or more modules, each corresponding to a set of instructions.
  • the processing component 922 is configured to execute instructions to perform any of the aforementioned methods applied to the apparatus for processing HARQ feedback.
  • the HARQ feedback processing apparatus 900 may also include a power component 926 configured to perform power management of the HARQ feedback processing apparatus 900, a wired or wireless network interface 950 configured to connect the HARQ feedback processing apparatus 900 to a network, and a Input output (I/O) interface 958.
  • the HARQ feedback processing device 900 may operate based on an operating system stored in the memory 932, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.

Abstract

Les modes de réalisation de la présente divulgation concernent un procédé et un appareil de traitement d'une rétroaction de requête automatique de répétition hybride (HARQ), et un support d'enregistrement. Le procédé décrit dans les modes de réalisation de la présente divulgation est applicable dans une station de base et comprend les étapes consistant à : déterminer des informations d'état d'une rétroaction HARQ ; et indiquer implicitement, sur la base d'informations d'état de la rétroaction HARQ, à un équipement utilisateur (UE), s'il faut désactiver ou non la rétroaction HARQ.
PCT/CN2020/106647 2020-08-03 2020-08-03 Procédé et dispositif de traitement de rétroaction harq, et support d'enregistrement WO2022027195A1 (fr)

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