WO2023279295A1 - Procédé et appareil de traitement d'informations, dispositif terminal, et support d'enregistrement - Google Patents

Procédé et appareil de traitement d'informations, dispositif terminal, et support d'enregistrement Download PDF

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Publication number
WO2023279295A1
WO2023279295A1 PCT/CN2021/105022 CN2021105022W WO2023279295A1 WO 2023279295 A1 WO2023279295 A1 WO 2023279295A1 CN 2021105022 W CN2021105022 W CN 2021105022W WO 2023279295 A1 WO2023279295 A1 WO 2023279295A1
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WIPO (PCT)
Prior art keywords
uplink
terminal device
harq
transmission
time
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PCT/CN2021/105022
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English (en)
Chinese (zh)
Inventor
李海涛
胡奕
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Oppo广东移动通信有限公司
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Priority to CN202180095540.0A priority Critical patent/CN116982385A/zh
Priority to PCT/CN2021/105022 priority patent/WO2023279295A1/fr
Publication of WO2023279295A1 publication Critical patent/WO2023279295A1/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to an information processing method, device, terminal device, and storage medium.
  • Uplink Hybrid Automatic Repeat Request-Acknowledgment (HARQ-ACK) feedback is a kind of feedback sent by the network device to the terminal device based on the reception of the Physical Uplink Shared Channel (PUSCH). Feedback.
  • HARQ-ACK Uplink Hybrid Automatic Repeat Request-Acknowledgment
  • Non-Terrestrial Network NTN
  • RTT Round Trip Time
  • Embodiments of the present application provide an information processing method, device, terminal equipment, and storage medium, which can clarify the response behavior of the terminal equipment after receiving uplink HARQ-ACK feedback. Described technical scheme is as follows:
  • an information processing method is provided, the method is executed by a terminal device, and the method includes:
  • the time difference is a difference between the first time point when the terminal device receives the uplink HARQ-ACK feedback and the second time point of the latest repeated transmission of the uplink transmission.
  • an information processing device includes: a response module;
  • the response module is configured to respond to the uplink HARQ-ACK feedback based on the time difference
  • the time difference is a difference between the first time point when the terminal device receives the uplink HARQ-ACK feedback and the second time point of the latest repeated transmission of the uplink transmission.
  • a terminal device includes a processor
  • the processor is configured to respond to uplink HARQ-ACK feedback based on the time difference
  • the time difference is a difference between the first time point when the terminal device receives the uplink HARQ-ACK feedback and the second time point of the latest repeated transmission of the uplink transmission.
  • a computer-readable storage medium is provided, and a computer program is stored in the storage medium, and the computer program is used for execution by a processor, so as to implement the above information processing method on the terminal device side.
  • a chip is provided, the chip includes a programmable logic circuit and/or program instructions, and when the chip is running, it is used to implement the above information processing method on the terminal device side.
  • a computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and a processor reads from the The computer-readable storage medium reads and executes the computer instructions, so as to implement the above information processing method on the terminal device side.
  • a response method to uplink HARQ-ACK feedback is provided.
  • a terminal device receives uplink HARQ-ACK feedback fed back by a network device, it determines a response method to uplink HARQ-ACK feedback based on a time difference, wherein, The time difference is the difference between the first time point when the terminal device receives the uplink HARQ-ACK feedback and the second time point of the last repeated transmission of the uplink transmission, which clarifies the behavior of the terminal device, and, because the uplink HARQ - When responding with ACK feedback, the time difference is taken into account in response to the signal transmission delay between the terminal device and the network side in the NTN system, which ensures that the terminal device can correctly respond to the uplink HARQ-ACK based on the time difference Feedback in response.
  • Fig. 1 is a schematic diagram of a communication system provided by an exemplary embodiment of the present application
  • Fig. 2 is a schematic diagram of a communication system provided by an exemplary embodiment of the present application.
  • Fig. 3 is a flowchart of an information processing method provided by an exemplary embodiment of the present application.
  • Fig. 4 is a schematic diagram of an information processing method provided by an exemplary embodiment of the present application.
  • Fig. 5 is a schematic diagram of an information processing method provided by an exemplary embodiment of the present application.
  • Fig. 6 is a schematic diagram of an information processing method provided by an exemplary embodiment of the present application.
  • Fig. 7 is a block diagram of an information processing device provided by an exemplary embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of a terminal device provided by an exemplary embodiment of the present application.
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the evolution of the technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.
  • Satellite communication is not restricted by the user's region. For example, general land communication cannot cover areas such as oceans, mountains, deserts, etc. that cannot be equipped with communication equipment or are not covered by communication due to sparse population. For satellite communication, due to a Satellites can cover a large area of the ground, and satellites can orbit the earth, so theoretically every corner of the earth can be covered by satellite communications. Secondly, satellite communication has great social value.
  • Satellite communication can be covered at a lower cost in remote mountainous areas, poor and backward countries or regions, so that people in these regions can enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital gap with developed regions and promoting development of these areas.
  • the distance of satellite communication is long, and the cost of communication does not increase significantly with the increase of communication distance; finally, the stability of satellite communication is high, and it is not limited by natural disasters.
  • LEO Low-Earth Orbit
  • MEO Medium-Earth Orbit
  • GEO Geostationary Earth Orbit
  • HEO High Elliptical Orbit
  • the altitude range of low-orbit satellites is 500km to 1500km, and the corresponding orbital period is about 1.5 hours to 2 hours.
  • the signal propagation delay of single-hop communication between users is generally less than 20ms.
  • the maximum satellite visible time is 20 minutes.
  • the signal propagation distance is short, the link loss is small, and the requirements for the transmission power of the user terminal equipment are not high.
  • Satellites in geosynchronous orbit have an orbital altitude of 35786km and a period of 24 hours around the earth.
  • the signal propagation delay of single-hop communication between users is generally 250ms.
  • satellites use multi-beams to cover the ground.
  • a satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover tens to hundreds of kilometers in diameter. ground area.
  • NTN networks There are at least two kinds of NTN networks: a transparent payload NTN network, as shown in FIG. 1 ; and a regenerative payload (regenerative payload) NTN network, as shown in FIG. 2 .
  • a transparent payload NTN network as shown in FIG. 1
  • a regenerative payload (regenerative payload) NTN network as shown in FIG. 2 .
  • the NTN network consists of the following network elements:
  • Feeder link The link used for communication between the gateway and the satellite.
  • Service link a link used for communication between the terminal and the satellite.
  • ⁇ Satellite From the functions it provides, it can be divided into two types: transparent transmission load and regenerative load.
  • Transparent transmission load only provide wireless frequency filtering, frequency conversion and amplification functions, only provide transparent forwarding of signals, and will not change the waveform signal it forwards.
  • Regenerative load In addition to providing radio frequency filtering, frequency conversion and amplification functions, it can also provide demodulation/decoding, routing/conversion, encoding/modulation functions. It has part or all of the functions of the base station.
  • Inter-Satellite Links Exists in regenerative load scenarios.
  • eMTC Enhanced Machine Type Communication
  • MTC Physical Downlink Control Channel (MTC Physical Downlink Control Channel, MPDCCH) is used to send scheduling information, based on LTE R11 enhanced physical downlink control channel (Enhanced Physical Downlink Control Channel, EPDCCH) design, terminal equipment based on demodulation reference signal (Demodulation Reference Signal, DMRS) to receive control information, support functions such as control information precoding and beamforming, one EPDCCH transmits one or more enhanced control channel resources (Enhanced Control Channel Element, ECCE), the aggregation level is ⁇ 1,2 ,4,8,16,32 ⁇ , each ECCE is composed of multiple Enhanced Resource Element Groups (EREG).
  • the maximum number of repetitions Rmax of MPDCCH can be configured, and the value range is ⁇ 1, 2, 4, 8, 16, 32, 64, 128, 256 ⁇ .
  • the eMTC Physical Downlink Shared Channel is basically the same as the LTE PDSCH channel, but repetition and inter-narrowband frequency hopping are added to improve PDSCH channel coverage and interference averaging.
  • eMTC terminal equipment can work in Mode A and Mode B: in Mode A, the maximum number of uplink and downlink Hybrid Automatic Repeat Request (HARQ) processes is 8, and in this mode, the number of PDSCH repetitions is ⁇ 1, 4, 16, 32 ⁇ ; In Mode B mode, the maximum number of uplink and downlink HARQ processes is 2. In this mode, the number of PDSCH repetitions is ⁇ 4, 16, 64, 128, 256, 512, 1024, 2048 ⁇ .
  • HARQ Hybrid Automatic Repeat Request
  • the eMTC Physical Uplink Control Channel (PUCCH) frequency domain resource format is the same as that of LTE, and supports frequency hopping and repeated transmission.
  • Mode A supports sending HARQ-ACK/NACK, scheduling request (Scheduling Request, SR), channel state information (Channel State Information, CSI) on PUCCH, that is, supports PUCCH format 1/1a/2/2a, and the number of repetitions supported is ⁇ 1,2,4,8 ⁇ ;
  • Mode B does not support CSI feedback, that is, it only supports PUCCH format 1/1a, and the number of repetitions supported is ⁇ 4,8,16,32 ⁇ .
  • eMTC Physical Uplink Shared Channel is the same as LTE, but the maximum number of schedulable resource blocks (Resource Block, RB) is limited to 6.
  • Mode A and Mode B are supported.
  • the number of repetitions of Mode A can be ⁇ 8, 16, 32 ⁇ , supporting up to 8 processes, and the rate is high;
  • Mode B covers a longer distance, and the number of repetitions can be ⁇ 192, 256, 384, 512, 768, 1024, 1536, 2048 ⁇ , supporting a maximum of 2 uplink HARQ processes.
  • the network can configure the DRX function for the terminal equipment, so that the terminal equipment monitors the PDCCH discontinuously, so as to achieve the purpose of power saving of the terminal equipment.
  • Each Media Access Control (MAC) entity has a DRX configuration, and the DRX configuration parameters include:
  • -drx cycle DRX cycle
  • -drx-onDurationTimer DRX duration timer
  • -drx-InactivityTimer DRX inactivity timer
  • -drx-RetransmissionTimer DRX downlink retransmission timer, each downlink HARQ process except the broadcast HARQ process corresponds to a drx-RetransmissionTimer;
  • each uplink HARQ process corresponds to a drx-ULRetransmissionTimer.
  • the terminal device If the terminal device is configured with DRX, the terminal device needs to monitor the PDCCH during the DRX activation period.
  • the DRX activation period includes the following situations:
  • DRX duration timer drx-InactivityTimer (DRX inactivity timer), drx-RetransmissionTimer (DRX downlink retransmission timer), drx-RetransmissionTimerShortTTI (DRX downlink short TTI retransmission timer), drx- ULRetransmissionTimer (DRX uplink retransmission timer), drx-ULRetransmissionTimerShortTTI (DRX uplink short TTI retransmission timer) and mac-ContentionResolutionTimer (contention resolution timer) Any one of the 7 timers is running.
  • PUCCH/SPUCCH Short PUCCH
  • the terminal device has not received the cell-radio network temporary identifier (Cell-Radio Network Temporary Identifier, C-RNTI) scrambled PDCCH indication after successfully receiving the random access response an initial transfer.
  • C-RNTI Cell-Radio Network Temporary Identifier
  • An uplink grant (UL grant) can be received for a pending HARQ retransmission, and there is data in the HARQ buffer (buffer) of the synchronous HARQ process.
  • the terminal device determines the time to start drx-onDurationTimer according to whether it is currently in a short DRX cycle (short DRX cycle) or a long DRX cycle (long DRX cycle).
  • the specific regulations are as follows:
  • the conditions for the terminal device to start or restart the HARQ RTT Timer are:
  • the terminal device receives a PDCCH indicating downlink transmission, or if the terminal has a configured downlink grant in this subframe, then:
  • the terminal device is an eMTC terminal device, then:
  • the terminal device If the physical layer indicates that multiple transmission block (Transport Block, TB) transmissions are scheduled, the terminal device starts the transmission in the multiple TBs in the subframe where the last repeated transmission of the PDSCH of the last TB of the multiple TBs is received.
  • the HARQ RTT Timer corresponding to the downlink HARQ process used by the PDSCH of each TB.
  • the terminal device starts the HARQ RTT Timer corresponding to the downlink HARQ process used by the PDSCH in the subframe where the last repeated transmission of the PDSCH is received.
  • the terminal device starts the DRX downlink retransmission timer (drx-RetransmissionTimer) corresponding to the downlink HARQ process.
  • the conditions for the terminal device to start or restart the UL HARQ RTT Timer are:
  • the terminal device receives a PDCCH indicating an uplink transmission using an asynchronous HARQ process, or if the terminal device has a configured uplink grant for an asynchronous HARQ process in this subframe, or if the terminal device receives a PDCCH indicating an uplink transmission using an automatic HARQ process transfer, then:
  • the terminal device If the physical layer indicates that multiple TB transmissions are scheduled, the terminal device starts the PUSCH of each of the multiple TBs in the subframe where the last repeated transmission of the PUSCH of the last TB of the multiple TBs is completed The UL HARQ RTT Timer corresponding to the uplink HARQ process.
  • the terminal device starts the UL HARQ RTT Timer corresponding to the uplink HARQ process used by the PUSCH in the subframe where the last repeated transmission of the PUSCH is completed.
  • the terminal device starts or restarts the drx-ULRetransmissionTimer corresponding to the uplink HARQ process used in the subframe where the last repeated transmission of the PUSCH is completed.
  • the terminal device If the UL HARQ RTT Timer corresponding to an uplink HARQ process times out, the terminal device starts the drx-ULRetransmissionTimer corresponding to the uplink HARQ process.
  • PUSCH transmission in Mode B requires 2048 repeated transmissions.
  • the network device receives the PUSCH, it tries to decode the repeated transmissions one by one, that is, the network device does not start to decode after receiving all 2048 repeated transmissions, so the network device may successfully receive after receiving part of the repeated transmissions. PUSCH.
  • the network equipment can feed back an uplink HARQ-ACK feedback as soon as possible, so that the eMTC terminal equipment can stop the subsequent repeated transmission of PUSCH in time after receiving it, so as to achieve the purpose of energy saving .
  • the time for the network equipment to respond to the uplink HARQ-ACK feedback mainly considers the processing delay after the terminal equipment completes the PUSCH transmission, which is usually a few milliseconds, and is greater than the RTT of the signal transmission between the terminal equipment and the network. During the processing time, respond to the subsequent scheduling of the terminal device according to the uplink reception situation.
  • the signal propagation delay between the terminal equipment and the network in NTN is greatly increased, and its RTT is much larger than the terminal processing time considered in the existing terrestrial network standards, which also gives the uplink HARQ-ACK feedback mechanism New questions were raised.
  • the network successfully receives the PUSCH after receiving a partial repetition (repetition).
  • the terminal device may transmit the PUSCH after receiving the uplink HARQ-ACK feedback (ie All repetitions) have ended, at which point the behavior of the end device needs to be defined.
  • a response method for uplink HARQ-ACK feedback is provided.
  • the response method to the uplink HARQ-ACK feedback is determined based on the time difference, where the time difference is the first time point when the terminal device receives the uplink HARQ-ACK feedback and the latest uplink transmission.
  • the difference between the second time points of a repeated transmission clarifies the behavior of the terminal device, and since the time difference is considered when responding to the uplink HARQ-ACK feedback, it is guaranteed that the terminal device can Correctly respond to the uplink HARQ-ACK feedback.
  • FIG. 3 shows a flowchart of an information processing method provided by an embodiment of the present application.
  • the method can be applied to a terminal device in the communication system shown in FIG. 1 or FIG. 2 .
  • the method may include the steps of:
  • Step 302 Respond to the uplink HARQ-ACK feedback based on the time difference, where the time difference is the difference between the first time point when the terminal device receives the uplink HARQ-ACK feedback and the second time point of the latest repeated transmission of the uplink transmission difference.
  • the uplink transmission supports repeated transmission (repetition), that is, for the same uplink transmission, the uplink transmission is repeatedly transmitted.
  • the terminal device determines a response mode to the uplink HARQ-ACK feedback based on the time difference between the first time point of receiving the uplink HARQ-ACK feedback sent by the network device and the second time point of the latest repeated transmission of the uplink transmission, wherein , the first time point is a time point not earlier than the second time point in the time domain position.
  • the first time point is a time point not earlier than the second time point in the time domain position.
  • the first time point is after the second time point in the time domain position; it can also be understood as the first time point The time point is at the same temporal position as the second time point.
  • the second time point can be understood as the start moment of the latest repeated transmission of the uplink transmission, or it can be understood as the middle moment of the latest repeated transmission of the uplink transmission, or it can be understood as the latest repeated transmission of the uplink transmission The end moment of the transfer.
  • the uplink HARQ-ACK feedback is mainly aimed at the following usage scenarios: first, it is aimed at the scenario where the network sends uplink HARQ-ACK feedback after successfully receiving the uplink transmission using partial repeated transmission. Second, for the scenario where the network sends uplink HARQ-ACK feedback after successfully receiving uplink transmissions of all uplink HARQ processes.
  • the time difference is used to assist the terminal device in determining a usage scenario of the uplink HARQ-ACK feedback. Further, the terminal device responds to the uplink HARQ-ACK feedback based on the determined usage scenario of the uplink HARQ-ACK feedback.
  • the uplink transmission includes: PUSCH.
  • the repeated transmission corresponds to the number of repetitions.
  • the number of repetitions supported by the uplink transmission is ⁇ 8, 16, 32 ⁇ .
  • the number of repetitions supported by the uplink transmission is ⁇ 192, 256, 384, 512, 768, 1024, 1536, 2048 ⁇ .
  • the latest repeated transmission refers to the repeated transmission that is closest to the first time point in the time domain among the repeated transmissions that have completed the uplink transmission.
  • the total number of repetitions of the PUSCH is 8, and the terminal device has received the uplink HARQ-ACK feedback before sending the 4th repeated transmission after sending the 3rd repeated transmission, then the latest repeated transmission refers to For the third repeated transmission, correspondingly, the time difference refers to the difference between the first time point when the terminal device receives the uplink HARQ-ACK feedback and the second time point when the terminal device sends the third repeated transmission.
  • the total number of repetitions of PUSCH is 8, and the terminal device receives the uplink HARQ-ACK feedback after sending the eighth repeated transmission, then the latest repeated transmission refers to the eighth repeated transmission, correspondingly,
  • the time difference refers to the difference between the first time point when the terminal device receives the uplink HARQ-ACK feedback and the second time point when the terminal device sends the eighth repeated transmission.
  • the terminal equipment includes at least one of the following types of terminal equipment: eMTC terminal equipment; low-capability terminal equipment.
  • the resource used by the terminal device to send the uplink transmission includes: the resource corresponding to the uplink transmission of the first asynchronous HARQ process indicated by the physical downlink control channel PDCCH received by the terminal device; or, the terminal device for the second asynchronous HARQ process There are resources corresponding to the configured uplink grant; or, resources corresponding to the uplink transmission of the automatic HARQ process indicated by the PDCCH received by the terminal device.
  • the method provided in this embodiment provides a response method to the uplink HARQ-ACK feedback.
  • the terminal device receives the uplink HARQ-ACK feedback fed back by the network device, based on the time difference, determine Response to uplink HARQ-ACK feedback, where the time difference is the difference between the first time point when the terminal device receives the uplink HARQ-ACK feedback and the second time point of the latest repeated transmission of the uplink transmission.
  • the time difference is the difference between the first time point when the terminal device receives the uplink HARQ-ACK feedback and the second time point of the latest repeated transmission of the uplink transmission.
  • the terminal device responds to the uplink HARQ-ACK feedback based on the value between the time difference and the RTT.
  • the terminal determines the usage scenario of the uplink HARQ-ACK feedback based on the value between the time difference and the RTT, and then responds to the uplink HARQ-ACK feedback based on the usage scenario of the uplink HARQ-ACK feedback.
  • the uplink HARQ-ACK feedback is mainly aimed at the following usage scenarios: first, it is aimed at the scenario where the network sends uplink HARQ-ACK feedback after successfully receiving the uplink transmission using partial repeated transmission. Second, an exemplary description is given for a scenario where the network sends uplink HARQ-ACK feedback after successfully receiving uplink transmissions of all uplink HARQ processes.
  • the time difference is less than the RTT, for the scenario where the network sends uplink HARQ-ACK feedback after successfully receiving uplink transmission using partial repeated transmission.
  • the time at which the terminal device receives the uplink HARQ-ACK feedback is less than the RTT from the time of the latest repeated transmission of the uplink transmission, which means that the network device successfully decodes the uplink transmission using partial repetition. At this time, the behavior of the network device is to expect to pass The uplink HARQ-ACK feedback is used to terminate the subsequent repeated transmission of the uplink transmission.
  • step 301 is replaced by step 301a: when the time difference is less than the RTT and the repeated transmission of the uplink transmission has not ended, stop the remaining repeated transmission of the uplink transmission.
  • step 301 is replaced by step 301b: when the time difference is less than RTT and the repeated transmission of uplink transmission has ended, stop the DRX uplink retransmission timer corresponding to the HARQ process of uplink transmission.
  • the repeated transmission of the uplink transmission corresponds to the number of repetitions
  • the repeated transmission of the uplink transmission has not ended means: the number of repeated transmissions of the uplink transmission that the terminal device has sent and completed is less than the number of repetitions; the repeated transmission of the uplink transmission has ended It refers to: the number of repeated transmissions of the uplink transmission that the terminal device has sent is equal to the number of repetitions; the remaining repeated transmission of the uplink transmission refers to: in the number of repeated transmissions of the uplink transmission, minus the number of repeated transmissions that the terminal device has sent Repeat the transmission of the uplink transmission, and repeat the transmission of the rest.
  • the number of repeated transmissions of the uplink transmission is 8 in total.
  • the terminal device stops the remaining 7th retransmission and 8th retransmission.
  • the number of repeated transmissions of the uplink transmission is 8 in total.
  • the terminal device stops the DRX corresponding to the HARQ process of the uplink transmission. Uplink retransmission timer.
  • the usage scenario representing uplink HARQ-ACK feedback is the scenario where the network sends uplink HARQ-ACK feedback after successfully receiving uplink transmission using partial repeated transmission.
  • the behavior of the network device is It is expected to terminate the subsequent repeated transmission of the uplink transmission through the uplink HARQ-ACK feedback. If the repeated transmission of the uplink transmission has not ended, stop the remaining repeated transmission of the uplink transmission. After the repeated transmission of the uplink transmission has ended and the uplink When the DRX uplink retransmission timer corresponding to the transmitted HARQ process is running, stop the DRX uplink retransmission timer corresponding to the running HARQ process, so as to achieve the purpose of energy saving of the terminal device.
  • the terminal device starts the DRX uplink retransmission timer corresponding to the HARQ process of the uplink transmission, and the third time point is the time point when the terminal device sends the last repeated transmission of the uplink transmission; or, After the fourth time point, the terminal device starts the DRX uplink retransmission timer corresponding to the HARQ process of the uplink transmission, and the fourth time point is a time point after the third time point.
  • RTT is a value obtained by rounding one of the following parameters:
  • the RTT value between the terminal device and the access network device is the RTT value between the terminal device and the access network device
  • Timing Advance (Timing Advance, TA) value of the terminal equipment
  • the RTT value between the terminal device and the satellite is the RTT value between the terminal device and the satellite
  • the network processing time includes access network device processing time and/or satellite processing time.
  • rounding is round up or round down.
  • the network processing time is carried in at least one of the following signaling: system message; radio resource control (Radio Resource Control, RRC) dedicated signaling; MAC control letter element (Control Element, CE); downlink control information ( Downlink Control Information, DCI).
  • RRC Radio Resource Control
  • CE MAC control letter element
  • DCI Downlink Control Information
  • the terminal device When receiving the uplink grant (UL grant) 401, the terminal device sends PUSCH 402 based on the scheduling of the uplink grant 401.
  • the HARQ process corresponding to PUSCH 402 is marked as HARQ ID 0, and after the last repeated transmission of PUSCH 402 is completed After a period of time, the DRX uplink retransmission timer corresponding to HARQ ID 0 is started.
  • the terminal device receives the uplink grant 403, based on the scheduling of the uplink grant 403, it sends PUSCH 404, and the HARQ process mark corresponding to PUSCH 404 It is HARQ ID 1, and after a period of time after the last repeated transmission of PUSCH 404 is completed, start the DRX uplink retransmission timer corresponding to HARQ ID 1.
  • the terminal device completes the last repeated transmission of PUSCH 404 at time point t1, and receives uplink HARQ-ACK feedback 405 at time point t2, and the time length between time point t1 and time point t2 is the time difference, as can be seen from Figure 4 , the time difference is less than RTT, and the PUSCH 404 of the terminal device has completed all repeated transmissions, the terminal device does not need to continue to monitor the retransmission scheduling for the HARQ process corresponding to the PUSCH 404, so it needs to stop the DRX uplink corresponding to the running HARQ ID 1 Retransmission timer to achieve the purpose of energy saving of terminal equipment.
  • the terminal device When receiving the uplink authorization 501, the terminal device sends PUSCH 502 based on the scheduling of the uplink authorization 501, and the HARQ process corresponding to PUSCH 502 is marked as HARQ ID 0, and after a period of time after the last repeated transmission of PUSCH 502 is completed , start the DRX uplink retransmission timer corresponding to HARQ ID 0, and then, when the terminal device receives the uplink grant 503, based on the scheduling of the uplink grant 503, send PUSCH 504, and the HARQ process corresponding to PUSCH 504 is marked as HARQ ID 1 .
  • the terminal device completes a repeated transmission of PUSCH 504 at time point t3, and receives uplink HARQ-ACK feedback 505 at subsequent time point t4, and the time length between time point t3 and time point t4 is the time difference, as shown in Figure 5 It can be seen that if the time difference is less than the RTT, and the PUSCH 504 of the terminal device has not completed all repeated transmissions, the terminal device does not need to transmit the remaining repeated transmissions of the PUSCH 504, so as to achieve the purpose of energy saving of the terminal device.
  • the method provided in this embodiment when the time difference is less than RTT, represents the use scenario of uplink HARQ-ACK feedback is the scenario where the network sends uplink HARQ-ACK feedback after successfully receiving uplink transmission using partial repeated transmission , at this time, the behavior of the network device is to expect to terminate the subsequent repeated transmission of the uplink transmission through the uplink HARQ-ACK feedback, then stop the remaining repeated transmission of the uplink transmission when the repeated transmission of the uplink transmission has not ended.
  • the time difference is greater than the RTT, for the scenario where the network sends uplink HARQ-ACK feedback after successfully receiving uplink transmissions of all uplink HARQ processes.
  • the moment when the terminal device receives the uplink HARQ-ACK feedback is greater than the RTT from the last retransmission of the uplink transmission, which means that the network device has received the retransmission of the uplink transmission of all uplink HARQ processes including the uplink transmission, and succeeded. Decode all uplink transmissions. At this time, the behavior of the network device is to terminate the retransmission scheduling monitoring of all HARQ processes through uplink HARQ-ACK feedback.
  • step 301 is replaced with step 301c: when the time difference is greater than the RTT, stop the DRX uplink retransmission timers corresponding to all HARQ processes of the terminal device.
  • the usage scenario of uplink HARQ-ACK feedback is the scenario where the network sends uplink HARQ-ACK feedback after successfully receiving uplink transmissions of all uplink HARQ processes.
  • the behavior of the network device It is expected to terminate the retransmission scheduling monitoring of all HARQ processes through uplink HARQ-ACK feedback, then the terminal device stops the DRX uplink retransmission timers corresponding to all HARQ processes, so as to achieve the purpose of energy saving of the terminal device.
  • the terminal device starts the DRX uplink retransmission timer corresponding to the HARQ process of the uplink transmission, and the third time point is the time point when the terminal device sends the last repeated transmission of the uplink transmission; or, After the fourth time point, the terminal device starts the DRX uplink retransmission timer corresponding to the HARQ process of the uplink transmission, and the fourth time point is a time point after the third time point.
  • RTT is a value obtained by rounding one of the following parameters:
  • the RTT value between the terminal device and the access network device is the RTT value between the terminal device and the access network device
  • the RTT value between the terminal device and the satellite is the RTT value between the terminal device and the satellite
  • the network processing time includes access network device processing time and/or satellite processing time.
  • rounding is round up or round down.
  • the network processing time is carried in at least one of the following signaling: system message; RRC dedicated signaling; MAC CE; DCI.
  • the terminal device When receiving the uplink grant 601, the terminal device sends PUSCH 602 based on the scheduling of the uplink grant 601.
  • the HARQ process corresponding to PUSCH 602 is marked as HARQ ID 0, and after a period of time after the last repeated transmission of PUSCH 602 is completed , start the DRX uplink retransmission timer corresponding to HARQ ID 0, and then, when the terminal device receives the uplink grant 603, based on the scheduling of the uplink grant 603, send PUSCH 604, and the HARQ process corresponding to PUSCH 604 is marked as HARQ ID 1 , and after a period of time after the last repeated transmission of PUSCH 604 is completed, start the DRX uplink retransmission timer corresponding to HARQ ID 1.
  • the terminal device completes the last repeated transmission of PUSCH 604 at time point t5, and receives uplink HARQ-ACK feedback 605 at time point t6, and the time length between time point t5 and time point t6 is the time difference, as shown in Figure 6 , the time difference is greater than RTT, which means that the network device has received all the repeated transmissions of the PUSCH of all uplink HARQ processes and successfully decoded all the PUSCHs. At this time, the behavior of the network device is to expect to terminate the retransmission of all HARQ processes through the uplink HARQ-ACK feedback Schedule monitoring.
  • the terminal device needs to stop all DRX uplink retransmission timers that are running in the uplink HARQ process, including: the DRX uplink retransmission timer corresponding to HARQ ID 0 and the DRX uplink retransmission timer corresponding to HARQ ID 1, so as to reach the terminal device
  • the terminal device needs to stop all DRX uplink retransmission timers that are running in the uplink HARQ process, including: the DRX uplink retransmission timer corresponding to HARQ ID 0 and the DRX uplink retransmission timer corresponding to HARQ ID 1, so as to reach the terminal device
  • the purpose of energy saving including: the DRX uplink retransmission timer corresponding to HARQ ID 0 and the DRX uplink retransmission timer corresponding to HARQ ID 1, so as to reach the terminal device The purpose of energy saving.
  • the method provided in this embodiment when the time difference is greater than RTT, represents the usage scenario of uplink HARQ-ACK feedback is that the network sends uplink HARQ-ACK feedback after successfully receiving uplink transmissions of all uplink HARQ processes Scenario, at this time, the behavior of the network device is to expect to terminate the retransmission scheduling monitoring of all HARQ processes through the uplink HARQ-ACK feedback, then the terminal device stops the DRX uplink retransmission timer corresponding to all HARQ processes, so as to achieve energy saving of the terminal device Purpose.
  • FIG. 7 shows a block diagram of an information processing device provided by an embodiment of the present application.
  • the apparatus has the function of implementing the above example method on the terminal device side, and the function may be implemented by hardware, or may be implemented by executing corresponding software on the hardware.
  • the device can be the terminal equipment introduced above, or it can be set in the terminal equipment. As shown in FIG. 7, the device 700 may include: a response module 702;
  • the response module 702 is configured to respond to the uplink HARQ-ACK feedback based on the time difference
  • the time difference is a difference between the first time point when the terminal device receives the uplink HARQ-ACK feedback and the second time point of the latest repeated transmission of the uplink transmission.
  • the responding module 702 is configured to respond to the uplink HARQ ACK feedback based on the value between the time difference and the RTT.
  • the response module 702 is configured to stop the uplink transmission when the time difference is less than the RTT and the repeated transmission of the uplink transmission has not ended The rest are repeated for transmission.
  • the response module 702 is configured to stop the HARQ transmission of the uplink transmission when the time difference is less than the RTT and the repeated transmission of the uplink transmission has ended.
  • the discontinuous reception DRX uplink retransmission timer corresponding to the process.
  • the response module 702 is configured to stop DRX uplink retransmission timers corresponding to all HARQ processes of the terminal device when the time difference is greater than the RTT.
  • the RTT is a value obtained by rounding one of the following parameters:
  • the RTT value between the terminal device and the access network device is the RTT value between the terminal device and the access network device
  • the TA value of the terminal device
  • the RTT value between the terminal device and the satellite is the RTT value between the terminal device and the satellite
  • the network processing time includes access network device processing time and/or satellite processing time.
  • the rounding is rounding up or rounding down.
  • the rounding is in milliseconds.
  • the network processing time is carried in at least one of the following signaling: system message; RRC dedicated signaling; MAC CE; DCI.
  • the device further includes: a timer starting module
  • the timer starting module is configured to start a DRX uplink retransmission timer corresponding to the HARQ process of the uplink transmission after a third time point, where the third time point is when the terminal device finishes sending the uplink transmission The time point of the last repeated transmission of ;
  • the timer starting module is configured to start the DRX uplink retransmission timer corresponding to the HARQ process of the uplink transmission after a fourth time point, where the fourth time point is one after the third time point point in time.
  • the uplink transmission includes PUSCH.
  • the latest repeated transmission refers to the repeated transmission that is closest to the first time point in the time domain among the repeated transmissions that have been completed in the uplink transmission.
  • the terminal equipment includes at least one of the following types of terminal equipment:
  • the device provided by the above embodiment realizes its functions, it only uses the division of the above-mentioned functional modules as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • FIG. 8 shows a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device may include: a processor 801 , a receiver 802 , a transmitter 803 , a memory 804 and a bus 805 .
  • the processor 801 includes one or more processing cores, and the processor 801 executes various functional applications and information processing by running software programs and modules.
  • the receiver 802 and the transmitter 803 can be implemented as a transceiver 806, and the transceiver 806 can be a communication chip.
  • the memory 804 is connected to the processor 801 through the bus 805 .
  • the memory 804 may be used to store a computer program, and the processor 801 is used to execute the computer program, so as to implement various steps performed by the terminal device in the foregoing method embodiments.
  • the memory 804 can be realized by any type of volatile or nonvolatile storage device or their combination, and the volatile or nonvolatile storage device includes but not limited to: RAM (Random-Access Memory, Random Access Memory) And ROM (Read-Only Memory, read-only memory), EPROM (Erasable Programmable Read-Only Memory, erasable programmable read-only memory), EEPROM (Electrically Erasable Programmable Read-Only Memory, electrically erasable programmable read-only memory memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory, CD-ROM), DVD (Digital Video Disc, high-density digital video disc) or other optical storage, tape cartridges, tapes, disks storage or other magnetic storage devices.
  • RAM Random-Access Memory
  • ROM Read-Only Memory
  • EPROM Erasable Programmable Read-Only Memory, erasable programmable read-only memory
  • EEPROM Electrically Erasable Programmable Read-Only
  • the processor 801 is configured to respond to the uplink HARQ-ACK feedback based on the time difference;
  • the time difference is a difference between the first time point when the terminal device receives the uplink HARQ-ACK feedback and the second time point of the latest repeated transmission of the uplink transmission.
  • the processor 801 is configured to respond to the uplink HARQ ACK feedback based on a value between the time difference and the RTT.
  • the processor 801 is configured to stop the remaining repeated transmission of the uplink transmission when the time difference is smaller than the RTT and the repeated transmission of the uplink transmission has not ended.
  • the processor 801 is configured to stop the discontinuous process corresponding to the HARQ process of the uplink transmission when the time difference is less than the RTT and the repeated transmission of the uplink transmission has ended.
  • Receive DRX uplink retransmission timer Receive DRX uplink retransmission timer.
  • the processor 801 is configured to stop DRX uplink retransmission timers corresponding to all HARQ processes of the terminal device when the time difference is greater than the RTT.
  • the RTT is a value obtained by rounding one of the following parameters:
  • the RTT value between the terminal device and the access network device is the RTT value between the terminal device and the access network device
  • the TA value of the terminal device
  • the RTT value between the terminal device and the satellite is the RTT value between the terminal device and the satellite
  • the network processing time includes access network device processing time and/or satellite processing time.
  • the rounding is rounding up or rounding down.
  • the rounding is in milliseconds.
  • the network processing time is carried in at least one of the following signaling: system message; RRC dedicated signaling; MAC CE; DCI.
  • the processor 801 is configured to start a DRX uplink retransmission timer corresponding to the HARQ process of the uplink transmission after a third time point, where the third time point is when the terminal device finishes sending all The time point of the last repeated transmission of the above-mentioned uplink transmission;
  • the processor 801 is configured to start a DRX uplink retransmission timer corresponding to the HARQ process of the uplink transmission after a fourth time point, where the fourth time point is a time after the third time point point.
  • the uplink transmission includes PUSCH.
  • the latest repeated transmission refers to the repeated transmission that is closest to the first time point in the time domain among the repeated transmissions that have been completed in the uplink transmission.
  • the terminal equipment includes at least one of the following types of terminal equipment:
  • An embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a terminal device, so as to implement the above information processing method on the terminal device side.
  • the computer-readable storage medium may include: ROM (Read-Only Memory, read-only memory), RAM (Random-Access Memory, random access memory), SSD (Solid State Drives, solid state drive) or an optical disc, etc.
  • the random access memory may include ReRAM (Resistance Random Access Memory, resistive random access memory) and DRAM (Dynamic Random Access Memory, dynamic random access memory).
  • the embodiment of the present application also provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip is run on the terminal device, it is used to implement the above information processing method on the terminal device side.
  • the embodiment of the present application also provides a computer program product or computer program, the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processor of the terminal device reads from the computer The readable storage medium reads and executes the computer instructions, so as to implement the above information processing method on the terminal device side.
  • the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
  • the "plurality” mentioned herein means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently.
  • the character “/” generally indicates that the contextual objects are an "or” relationship.
  • the numbering of the steps described herein only exemplarily shows a possible sequence of execution among the steps.
  • the above-mentioned steps may not be executed according to the order of the numbers, such as two different numbers
  • the steps are executed at the same time, or two steps with different numbers are executed in the reverse order as shown in the illustration, which is not limited in this embodiment of the present application.
  • the functions described in the embodiments of the present application may be implemented by hardware, software, firmware or any combination thereof.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage media may be any available media that can be accessed by a general purpose or special purpose computer.

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

Abstract

La présente demande se rapporte au domaine technique des communications et divulgue un procédé et un appareil de traitement d'informations, un dispositif terminal, et un support d'enregistrement. Le procédé est mis en œuvre par le dispositif terminal. Le procédé comprend les étapes consistant à : répondre à une rétroaction HARQ-ACK de liaison montante sur la base d'une différence de temps, la différence de temps étant une différence entre un premier instant, lorsque le dispositif terminal reçoit la rétroaction HARQ-ACK de liaison montante, et un second instant de la dernière transmission répétée de transmission de liaison montante. Compte tenu du long retard de transmission de signal sans fil entre le dispositif terminal et le réseau, dans un système NTN, sur la base de la solution fournie dans les modes de réalisation de la présente demande, le comportement du dispositif terminal peut être spécifié lorsque la rétroaction HARQ-ACK de liaison montante est reçue.
PCT/CN2021/105022 2021-07-07 2021-07-07 Procédé et appareil de traitement d'informations, dispositif terminal, et support d'enregistrement WO2023279295A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202180095540.0A CN116982385A (zh) 2021-07-07 2021-07-07 信息处理方法、装置、终端设备及存储介质
PCT/CN2021/105022 WO2023279295A1 (fr) 2021-07-07 2021-07-07 Procédé et appareil de traitement d'informations, dispositif terminal, et support d'enregistrement

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PCT/CN2021/105022 WO2023279295A1 (fr) 2021-07-07 2021-07-07 Procédé et appareil de traitement d'informations, dispositif terminal, et support d'enregistrement

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