WO2020200012A1 - Procédé de communication et dispositif de communication - Google Patents

Procédé de communication et dispositif de communication Download PDF

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Publication number
WO2020200012A1
WO2020200012A1 PCT/CN2020/081175 CN2020081175W WO2020200012A1 WO 2020200012 A1 WO2020200012 A1 WO 2020200012A1 CN 2020081175 W CN2020081175 W CN 2020081175W WO 2020200012 A1 WO2020200012 A1 WO 2020200012A1
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Prior art keywords
channel
channels
information
terminal device
time period
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PCT/CN2020/081175
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English (en)
Chinese (zh)
Inventor
邵家枫
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load

Definitions

  • This application relates to the communication field, and in particular to a communication method and a communication device in the communication field.
  • 5G mobile communication systems need to support enhanced mobile broadband (eMBB) services, ultra-reliable and low-latency communications (URLLC) services, and massive machine type communications (mMTC) services .
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable and low-latency communications
  • mMTC massive machine type communications
  • eMBB services include: ultra-high-definition video, augmented reality (AR), virtual reality (VR), etc.
  • the main characteristics of these services are large transmission data volume and high transmission rate.
  • Typical URLLC services include wireless control in industrial manufacturing or production processes, motion control of unmanned vehicles and unmanned aircraft, and tactile interaction applications such as remote repairs and remote surgery.
  • the main feature of these services is ultra-high reliability. , Low latency, less data transmission and bursty.
  • the terminal equipment processes services in a time sequence, that is, processes the first-arrival channels first, and waits for the first-arrive channels to be processed before processing the latter ones.
  • the channel carrying URLLC services needs to be processed before the channel carrying eMBB services.
  • This business processing method is called out of order (out of order) scheduling. How to implement out-of-sequence scheduling in a complex and changeable 5G communication system is an urgent problem to be solved.
  • the present application provides a communication method and a communication device, which can be applied to an out-of-sequence scheduling scenario in a 5G mobile communication system.
  • a communication method which can be executed by a terminal device or a module (such as a chip) in the terminal device.
  • the method includes: receiving a first downlink channel in a first time period, there is a corresponding relationship between the first downlink channel and the first uplink channel, the first uplink channel occupies a fourth time period, and the fourth time period is located in the first time period Afterwards; the second downlink channel is received in the second time period, there is a correspondence between the second downlink channel and the second uplink channel, the second uplink channel occupies the third time period, the second time period is located after the first time period and is located in the third time period Previously, the third time period was before the fourth time period; the first target channel for priority processing was determined from the first channel set according to preset rules, the first channel set including the first downlink channel and the second downlink channel, or the first The channel set includes a first uplink channel and a second uplink channel.
  • the terminal device applying the above method can determine the channels that need to be processed preferentially in different scenarios according to the actual situation. Compared with the method in the prior art that all processes the channels scheduled after the time, the communication method provided in this application can meet the needs of urgent data or The transmission requirements of more important data can improve the transmission efficiency of important emergency data.
  • the preset rule includes at least one of the following information: priority information indicated by the downlink control channel corresponding to the channel in the first channel set or priority information indicated by the channel in the first channel set; the first channel The time-frequency resources corresponding to the channels in the set; the number of layers corresponding to the channels in the first channel set; the block error rate corresponding to the channels in the first channel set; the transport block size TBS carried by the channels in the first channel set; the first channel set The type of uplink control information UCI carried by the channel; the HARQ process number of the hybrid automatic repeat request indicated by the downlink control channel corresponding to the channel in the first channel set; the number of transmissions corresponding to the channel in the first channel set; the time of the first downlink channel Domain position and the time domain position of the second downlink channel; the time domain position of the first uplink channel and the time domain position of the second uplink channel.
  • the first channel set further includes a third downlink channel
  • the method further includes: receiving a third downlink channel in a fifth time period, where there is a correspondence between the third downlink channel and the third uplink channel, and the third uplink channel
  • the channel occupies the sixth time period, the fifth time period is located before the second time period and before the sixth time period, and the sixth time period is located after the third time period; according to preset rules, from the first channel set except the first target channel Determine the second target channel for priority processing.
  • the above solution enables the terminal device to determine whether to process multiple channels according to its own capabilities, instead of only processing channels scheduled later in time, thereby improving resource efficiency.
  • channels other than the first target channel in the first channel set are other channels
  • the preset rule includes at least one of the following information: priority information indicated by the downlink control channel corresponding to the channels in the other channels Or the priority information indicated by the channel in other channels; the time-frequency resources corresponding to the channels in other channels; the number of layers corresponding to the channels in other channels; the block error rate corresponding to the channels in other channels; the TBS carried by the channels in other channels; other channels
  • the foregoing preset rule includes: the channel with the smallest difference between the sum of the values of the first information corresponding to the channels in the other channels and the threshold of the first information is the channel for priority processing; the second target channel is the other channel M channels that meet the preset rule, the sum of the values of the first information corresponding to the M channels is less than the threshold of the first information, M is a positive integer, and the first information includes at least one of the following information: time-frequency resources, Number of layers and TBS.
  • the above solution enables the terminal device to process as many channels as possible without exceeding its own processing capacity, thereby improving resource efficiency.
  • the preset rule includes: the channel with the largest or smallest difference between the value of the first information corresponding to the channel in other channels and the threshold of the first information is the channel for priority processing, and the first information includes at least one of the following information One type: time-frequency resources, number of layers, and TBS; the second target channel is M channels meeting preset rules among other channels, the parameters corresponding to the M channels are less than the parameter threshold, and M is a positive integer.
  • the above solution is simple and easy to implement, and can reduce the burden of the terminal device when determining the second target information.
  • the method further includes: receiving first configuration information or second configuration information, where the first configuration information is used to indicate that the backhaul between multiple network devices corresponding to the terminal device is an ideal backhaul or to indicate that the terminal device corresponds to For a network device, the second configuration information is used to indicate that the backhaul between multiple network devices corresponding to the terminal device is a non-ideal backhaul.
  • the advantage of the above solution is that when the backhaul between multiple network devices is an ideal backhaul, or when a terminal device corresponds to a network device, the channel with the later position in the time domain must carry or schedule important data, and the time domain position is used
  • the higher priority rules of the lower channels can prevent important data from being skipped.
  • the channel located later in the time domain does not necessarily carry or schedule important data.
  • the terminal device determines the priority channel according to other rules, which is beneficial to the terminal device to determine the load.
  • the channel of important information is conducive to improving the efficiency of communication resources.
  • the method further includes: sending capability information, where the capability information is used to indicate whether the terminal device supports out-of-sequence transmission.
  • This solution enables the network device to perform scheduling according to the capabilities of the terminal device, avoiding the situation that the terminal device does not support out-of-sequence transmission but receives out-of-sequence scheduling information, which causes transmission failure.
  • the method further includes: receiving third configuration information, where the third configuration information is used to configure whether the terminal device can perform out-of-sequence transmission.
  • the network device can enable or disable this ability according to the actual situation. For example, if the power of the terminal device is insufficient, or the current load of the terminal device is heavy, executing out of order scheduling may increase the power consumption and load of the terminal device.
  • the network device can use the third configuration information to enable the non-sequential scheduling capability of the terminal device, thereby effectively improving the endurance and reliability of the terminal device.
  • non-sequential transmission includes: non-sequential transmission from the downlink data channel to HARQ information, and/or non-sequential transmission from the downlink control channel to the uplink data channel.
  • the terminal device can further indicate the specific capabilities it supports in the capability information, so that the network device can schedule more accurately.
  • this application also provides a communication method, which can be executed by a network device or a module (such as a chip) in the network device.
  • the method includes: sending a first downlink channel in a first time period, there is a corresponding relationship between the first downlink channel and the first uplink channel, the first uplink channel occupies a fourth time period, and the fourth time period is located after the first time period;
  • the second downlink channel is sent in the second time period.
  • the second uplink channel occupies the third time period.
  • the second time period is after the first time period and before the third time period.
  • the third period is before the fourth period; the first target channel is determined from the first channel set according to a preset rule, the first channel set includes the first downlink channel and the second downlink channel, or the first channel set includes the first Uplink channel and second uplink channel; receiving the first target channel or HARQ information corresponding to the first target channel.
  • the network device applying the above method can determine the channel to be received in different scenarios (that is, the channel that needs to be processed preferentially by the terminal device) according to the actual situation, compared to the channel that is scheduled after the reception time in the prior art (or, this HARQ information corresponding to the channel).
  • the above method can meet the transmission requirements of emergency data or more important data, thereby improving the transmission efficiency of important emergency data.
  • the channels in the first channel set except the first target channel are other channels
  • the method further includes: receiving HARQ information corresponding to some or all channels in other channels, and some or all channels in other channels correspond to HARQ information is NACK.
  • the network device can receive channels other than the first target channel without retransmitting or rescheduling channels other than the first target channel, thereby providing resource efficiency.
  • the preset rule includes at least one of the following information: the priority identifier corresponding to the channel in the first channel set; the time-frequency resource corresponding to the channel in the first channel set; the channel corresponding to the channel in the first channel set The number of layers; the block error rate corresponding to the channel in the first channel set; the TBS carried by the channel in the first channel set; the type of UCI carried by the channel in the first channel set; the HARQ process number corresponding to the channel in the first channel set; The number of transmissions corresponding to the channels in a channel set; the time domain position of the first downlink channel and the time domain position of the second downlink channel; the time domain position of the first uplink channel and the time domain position of the second uplink channel.
  • the first channel set further includes a third downlink channel
  • the method further includes: sending a third downlink channel in a fifth time period, and there is a correspondence between the third downlink channel and the third uplink channel, and the third uplink channel
  • the channel occupies the sixth time period, the fifth time period is located before the second time period and before the sixth time period, and the sixth time period is located after the third time period; according to preset rules, from the first channel set except the first target channel Determine the second target channel; receive the second target channel or HARQ information corresponding to the second target channel.
  • the above solution enables the network device to determine whether to receive the second target channel or the HARQ information corresponding to the second target channel according to the capabilities of the terminal device, instead of only receiving the first target channel, thereby improving resource efficiency .
  • the channels in the first channel set other than the first target channel are other channels
  • the preset rule includes at least one of the following information: priority identifiers corresponding to channels in other channels; channels in other channels Corresponding time-frequency resources; number of layers corresponding to channels in other channels; block error rate corresponding to channels in other channels; TBS carried by channels in other channels; types of UCI carried by channels in other channels; HARQ corresponding to channels in other channels Process number; the number of transmissions corresponding to the channel in other channels; the time domain position of the channel in other channels.
  • the preset rule includes: the channel with the smallest difference between the sum of the values of the first information corresponding to the channels in the other channels and the threshold of the first information is the channel for priority processing; the second target channel is the other channel
  • the sum of the values of the first information corresponding to the M channels is less than the threshold value of the first information, M is a positive integer, and the first information includes at least one of the following information: time-frequency resources , Number of layers and TBS.
  • the above solution enables the network equipment to receive as many channels as possible on the premise that the terminal equipment does not exceed its own processing capacity, thereby improving resource efficiency.
  • the preset rule includes: the channel with the largest or smallest difference between the value of the first information corresponding to the channel in other channels and the threshold of the first information is the channel for priority processing, and the first information includes the following information At least one of: time-frequency resources, number of layers, and TBS; the second target channel is M channels meeting preset rules among other channels, the parameters corresponding to the M channels are less than the parameter threshold, and M is a positive integer.
  • the above-mentioned solution is simple and easy to implement, and can reduce the burden of the network device when determining the second target information.
  • the method further includes: sending first configuration information or second configuration information, where the first configuration information is used to indicate that the backhaul between multiple network devices corresponding to the terminal device is an ideal backhaul or to indicate that the terminal device corresponds to For a network device, the second configuration information is used to indicate that the backhaul between multiple network devices corresponding to the terminal device is a non-ideal backhaul.
  • the advantage of the above solution is that when the backhaul between multiple network devices is an ideal backhaul, or when a terminal device corresponds to a network device, the channel with the later position in the time domain must carry or schedule important data, and the time domain position is used The higher priority rules of the lower channels can prevent important data from being skipped.
  • the channel located later in the time domain does not necessarily carry or schedule important data.
  • the network device determines which channel the terminal device prioritizes according to other rules, which is beneficial for receiving more bearers.
  • the channel of important information is conducive to improving the efficiency of communication resources.
  • the method further includes: receiving capability information, where the capability information is used to indicate whether the terminal device supports out-of-sequence transmission.
  • This solution enables the network device to perform scheduling according to the capabilities of the terminal device, avoiding the situation that the terminal device does not support out-of-sequence transmission but receives out-of-sequence scheduling information, which causes transmission failure.
  • the method further includes: sending third configuration information, where the third configuration information is used to configure whether the terminal device can perform out-of-sequence transmission.
  • the network device can enable or disable this ability according to the actual situation. For example, if the power of the terminal device is insufficient, or the current load of the terminal device is heavy, executing out of order scheduling may increase the power consumption and load of the terminal device.
  • the network device can use the third configuration information to enable the non-sequential scheduling capability of the terminal device, thereby effectively improving the endurance and reliability of the terminal device.
  • non-sequential transmission includes: non-sequential transmission from the downlink data channel to HARQ information, and/or non-sequential transmission from the downlink control channel to the uplink data channel.
  • the terminal device can further indicate the specific capabilities it supports in the capability information, so that the network device can schedule more accurately.
  • the present application provides a communication device that can implement the functions corresponding to the method involved in the above-mentioned first aspect.
  • the functions can be implemented by hardware or by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above-mentioned functions.
  • the device includes a processor, and the processor is configured to support the device to execute the method involved in the first aspect.
  • the device may also include a memory for coupling with the processor and storing programs and data.
  • the device further includes a transceiver, which is used to support communication between the device and the network device.
  • the transceiver may include an independent receiver and an independent transmitter, or the transceiver may include a circuit with integrated transceiver functions.
  • the present application provides another communication device, which can implement the functions corresponding to the method involved in the second aspect above.
  • the functions can be implemented by hardware or by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above-mentioned functions.
  • the device includes a processor, and the processor is configured to support the device to execute the method involved in the second aspect.
  • the device may also include a memory for coupling with the processor and storing programs and data.
  • the device further includes a transceiver, which is used to support communication between the device and the terminal device.
  • the transceiver may include an independent receiver and an independent transmitter, or the transceiver may include a circuit with integrated transceiver functions.
  • the present application provides a computer-readable storage medium in which a computer program is stored.
  • the processor executes the method described in the first aspect.
  • the present application provides a computer-readable storage medium in which a computer program is stored.
  • the processor executes the method described in the second aspect.
  • the present application provides a computer program product, the computer program product comprising: computer program code, when the computer program code is executed by a processor, the processor executes the method described in the first aspect.
  • this application provides a computer program product, the computer program product comprising: computer program code, when the computer program code is executed by a processor, the processor executes the method described in the second aspect.
  • Figure 1 is a schematic diagram of a communication system suitable for the present application
  • FIG. 2 is a schematic diagram of another communication system applicable to the present application.
  • FIG. 3 is a schematic diagram of an information transmission method provided by the present application.
  • FIG. 4 is a schematic diagram of an out-of-sequence scheduling scenario provided by this application.
  • FIG. 5 is a schematic diagram of another out-of-sequence scheduling scenario provided by this application.
  • FIG. 6 is a schematic diagram of yet another scenario of scheduling out of order provided by this application.
  • FIG. 7 is a schematic diagram of yet another scenario of scheduling out of order provided by this application.
  • FIG. 8 is a schematic diagram of yet another scenario of out-of-sequence scheduling provided by this application.
  • FIG. 9 is a schematic diagram of yet another scenario of scheduling out of order provided by this application.
  • FIG. 10 is a schematic diagram of yet another scenario for scheduling out of order provided by this application.
  • FIG. 11 is a schematic diagram of yet another scenario for scheduling out of order provided by this application.
  • FIG. 12 is a schematic diagram of yet another scenario for scheduling out of order provided by this application.
  • FIG. 13 is a schematic diagram of yet another scenario for scheduling out of order provided by this application.
  • FIG. 14 is a schematic diagram of a communication method provided by this application.
  • FIG. 15 is a schematic diagram of a communication device provided by the present application.
  • FIG. 16 is a schematic diagram of a terminal device provided by this application.
  • Fig. 17 is a schematic diagram of a network device provided by the present application.
  • FIG. 1 is a schematic diagram of a communication system suitable for this application.
  • the communication system 100 includes a network device 110 and a terminal device 120.
  • the terminal device 120 communicates with the network device 110 through electromagnetic waves, that is, the terminal device 120 can send data to the network device 110, and the network device 110 can also send data to the terminal device 120.
  • the terminal device 120 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem.
  • the third generation partnership program (3rd generation Partnership project, 3GPP) defined user equipment (user equipment, UE), mobile station (mobile station, MS), soft terminal, home gateway, set-top box, etc., the chip applied to the above equipment can also be called terminal equipment.
  • the network device 110 may be a base station defined by 3GPP, for example, a base station (new generation node B, gNB) in a 5G communication system.
  • the network device 110 may also be a non-3GPP (non-3GPP) access network device, such as an access gateway (AGF).
  • the network device may also be a relay station, an access point, a vehicle-mounted device, a wearable device, and other types of devices.
  • the chips applied to the above-mentioned devices may also be referred to as network devices.
  • wearable devices can also be called wearable smart devices. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • FIG. 2 shows another communication system suitable for this application.
  • the base station 210 is one form of the network device 110, and UE1 to UE6 are six different forms of the terminal device 120.
  • UE1 is a communication device in a rail transit system
  • UE2 is a set-top box
  • UE3 is a smart refueling device or a smart charging pile
  • UE4 is a smart cup
  • UE5 is a mobile phone
  • UE6 is a smart printer.
  • UE4, UE5, and UE6 can form a local area network.
  • UE5 can be used as a network device in the local area network
  • UE4 and UE6 can be used as terminal devices in the local area network.
  • FIG. 1 and FIG. 2 are only examples, and the communication systems applicable to this application are not limited thereto.
  • the process in which the terminal device 120 sends data to the network device 110 may be referred to as uplink transmission, and the process in which the network device 110 sends data to the terminal device 120 may be referred to as downlink transmission.
  • uplink transmission the process in which the terminal device 120 sends data to the terminal device 120
  • downlink transmission the process in which the network device 110 sends data to the terminal device 120
  • the terminal devices and network devices below are no longer accompanied by reference numerals.
  • the terminal device will receive the downlink control information (DCI) sent by the network device.
  • the DCI carries an indication of the physical uplink shared channel (physical uplink shared channel (PUSCH) occupied time domain resources, frequency domain resources, modulation mode and other indication information.
  • the terminal device can determine which time domain resource and frequency domain resource to send the PUSCH on, and then perform the preparation steps for sending the PUSCH.
  • the preparation steps generally include: coding, modulation, resource mapping and Fourier transform of information.
  • the terminal device sends the prepared PUSCH on the time domain resources and frequency domain resources indicated by the DCI. It can be seen that after receiving the physical downlink control channel (PDCCH), it takes a period of time for the terminal device to be able to transmit the PUSCH, and this period of time is called the preparation time.
  • PDCCH physical downlink control channel
  • the PDCCH is usually only used to carry DCI.
  • the PDCCH is equivalent to a carrier, and the content carried is the DCI. Because the PDCCH and the DCI have a one-to-one correspondence, the description of receiving PDCCH and receiving DCI is equivalent.
  • the data channel for example, PUSCH
  • service data for example, eMBB service and URLLC service
  • the terminal device For downlink transmission, if the downlink transmission is based on dynamic scheduling, then as shown in Figure 3, the terminal device will receive the DCI sent by the network device, and the DCI carries indicating the physical downlink shared channel (PUSCH) occupied Indication information such as time domain resources, frequency domain resources, and modulation methods. After receiving the DCI, the terminal device decodes the PDSCH.
  • the decoding process generally includes: resource demapping, inverse Fourier transform, demodulation, and decoding. In the end, if the result of decoding is correct, the reception is correct, and if the result is wrong, the reception fails. It can be seen that after receiving the DCI, it takes a period of time for the terminal device to determine whether the PDSCH is received correctly. This period of time is called the decoding time.
  • the above DCI also carries indication information indicating uplink resources.
  • the uplink resource is, for example, a physical uplink control channel (PUCCH), and the PUCCH is used to carry the hybrid automatic repeat request (HARQ) corresponding to the PDSCH. information.
  • the terminal device decodes the PDSCH, the result of the decoding is fed back to the network device through the uplink resource indicated by the DCI.
  • the feedback information is an acknowledgement (acknowledgement, ACK); if the reception is wrong, the feedback information is a negative acknowledgement (NACK), and ACK and NACK are collectively referred to as HARQ information.
  • the terminal equipment will feed back the HARQ information corresponding to the PDSCH, so that the network equipment can quickly retransmit after knowing the reception error of the terminal equipment.
  • the network equipment In order to reduce the complexity of information processing by the terminal equipment, in general, the network equipment will schedule each channel in order, so that the terminal equipment processes one channel before processing the next channel. However, in some special scenarios, there is a need for scheduling out of order.
  • URLLC data URLLC service data packets
  • the network device wants to determine whether the URLLC data is received correctly as soon as possible.
  • the network device instructs the terminal device to feed back the HARQ information of the URLLC data as soon as possible.
  • PDSCH-1 carries eMBB service data packets (referred to as "eMBB data" for short), and PDSCH-2 carries URLLC data.
  • eMBB data eMBB service data packets
  • PDSCH-2 carries URLLC data.
  • the network device schedules the terminal device to feed back the HARQ information (ie, HARQ-2) of the URLLC data before feeding back the HARQ information of the eMBB data (ie, HARQ-1).
  • the terminal equipment needs to interrupt the decoding process of PDSCH-1 and perform the decoding process of PDSCH-2 first.
  • PDCCH-1 schedules PUSCH-1 and PDCCH-2 schedules PUSCH-2, where PUSCH-1 carries eMBB data, and PUSCH-2 carries URLLC data.
  • the network device schedules the terminal device to send PUSCH-2 before sending PUSCH-1.
  • the terminal device needs to interrupt the preparation process of PUSCH-1 and perform the preparation process of PUSCH-2 first.
  • the situation shown in Figure 4 can be called out-of-sequence scheduling (or "out-of-sequence transmission") from downlink data channel to HARQ information
  • the situation shown in Figure 5 can be called out-of-sequence scheduling from downlink control channel to uplink data channel Scheduling (or "out-of-sequence transmission").
  • the scenarios shown in FIG. 4 and FIG. 5 are only two examples of non-sequential scheduling, and the non-sequential scheduling applicable to the present application is not limited to this.
  • the non-sequential scheduling applicable to this application may also be: the network device schedules at least two PDSCHs carrying eMBB data out of sequence, or the network device schedules at least two PDSCHs carrying eMBB data out of sequence and at least A PDSCH carrying URLLC data.
  • Figure 6 shows a non-sequential scheduling in a non-ideal backhaul scenario.
  • the terminal device communicates with the multi-transmit/receive point (TRP) 1 and TRP2 respectively.
  • TRP1 and TRP2 may be transceivers belonging to two base stations respectively, TRP1 and TRP2 may also be transceivers belonging to one base station, TRP1 and TRP2 are connected by optical fiber or other transmission media.
  • TRP1 and TRP2 can be considered that the two TRPs cannot exchange information in real time, and TRP1 and TRP2 are in a non-ideal backhaul scenario.
  • TRP1 and TRP2 can be regarded as two network devices. If there is a small communication delay between TRP1 and TRP2, it can be considered that the two TRPs can exchange information in real time, and TRP1 and TRP2 are in an ideal backhaul scenario.
  • TRP1 and TRP2 can be regarded as one network device.
  • URLLC due to the low latency requirements of URLLC, there may also be cases of out-of-sequence scheduling.
  • TPR2 may The terminal equipment is scheduled to upload the HARQ information of the eMBB data 2 in the time slot 3. In fact, TPR1 has scheduled the terminal equipment to upload the HARQ information of the eMBB data 1 in the time slot 4, which has caused the terminal equipment to be scheduled out of order.
  • TPR2 may schedule the terminal device to upload the HARQ information of the eMBB data in the time slot 3.
  • TPR1 has already scheduled the terminal equipment to upload HARQ information of URLLC data in time slot 4, as shown in Figure 7, which also leads to out-of-sequence scheduling.
  • Figure 8 shows a non-sequential scheduling that includes three downlink data channels.
  • the TRP that schedules eMBB data has already scheduled the terminal device to upload eMBB data in the second half of time slot 4.
  • the TRP that schedules the URLLC data will schedule the terminal device to upload the HARQ information of the URLLC data in the first half of time slot 4, which results in out-of-sequence scheduling.
  • TPR1 may schedule the terminal device to upload the HARQ information of eMBB data 1 and eMBB data 2 in the first half of time slot 4.
  • TPR2 has already scheduled the terminal equipment to upload HARQ information of URLLC data in the second half of time slot 4, as shown in Fig. 9, which also results in out of order scheduling.
  • FIGS. 8 and 9 show the out-of-sequence scheduling that includes one PDSCH that carries URLLC data.
  • the out-of-sequence scheduling applicable to this application may also include multiple PDSCHs that carry URLLC data.
  • FIGS. 5 to 9 are all non-sequential scheduling of PDSCH to HARQ information (PDSCH to HARQ). The following describes the non-sequential scheduling of PDCCH to PUSCH (PDCCH to PUSCH) in conjunction with FIGS. 10 to 13.
  • the connection between TRP1 and TRP2 is a non-ideal backhaul connection.
  • TPR2 may schedule the terminal device to transmit the PUSCH carrying eMBB data 2 in time slot 3.
  • TPR1 has already scheduled the terminal device to send the PUSCH of eMBB data 1 in time slot 4, resulting in out-of-sequence scheduling.
  • TPR2 may schedule the terminal device to send the PUSCH carrying eMBB data in time slot 3.
  • TPR1 has already scheduled the terminal device to send the PUSCH carrying URLLC data in time slot 4, as shown in Figure 11, which also leads to out-of-sequence scheduling.
  • Figure 12 shows a non-sequential scheduling that includes three downlink data channels.
  • the connection between TRP1 and TRP2 is an ideal backhaul connection, or in the case of a terminal device communicating with a TRP, the TRP that schedules eMBB data has already scheduled the terminal device to upload eMBB data in the second half of time slot 4.
  • the TRP that schedules the URLLC data will schedule the terminal device to upload the HARQ information of the URLLC data in the first half of time slot 4, which results in out-of-sequence scheduling.
  • TPR1 may schedule the terminal device to upload the HARQ information of eMBB data 1 and eMBB data 2 in the first half of time slot 4.
  • TPR2 has already scheduled the terminal equipment to upload the HARQ information of the URLLC data in the second half of time slot 4, as shown in Fig. 13, which also leads to out-of-sequence scheduling.
  • the dotted arrows in FIGS. 6 to 13 indicate the correspondence, and the solid arrows indicate the direction of information transmission.
  • the present application provides a communication method that can be applied to scenarios that are not scheduled in order.
  • the method 100 includes:
  • the terminal device receives the first downlink channel in the first time period, there is a corresponding relationship between the first downlink channel and the first uplink channel, the first uplink channel occupies a fourth time period, and the fourth time period is located in the first time period after that.
  • the terminal device receives the second downlink channel in the second time period. There is a corresponding relationship between the second downlink channel and the second uplink channel.
  • the second uplink channel occupies the third time period.
  • the second time period is located after the first time period and is located in the first time period. Before the third period, the third period is before the fourth period.
  • the corresponding relationship between the downlink channel and the uplink channel in this application can be understood as: the downlink channel is the PDSCH, and the uplink channel is the uplink channel that carries the HARQ information of the PDSCH.
  • the uplink channel is PUCCH or PUSCH.
  • the corresponding relationship between the downlink channel and the uplink channel in this application can be understood as: the downlink channel is the PDCCH, and the uplink channel is the uplink channel indicated by the PDCCH.
  • the uplink channel is PUCCH or PUSCH.
  • the information carried by the PDCCH indicates the resource information of the uplink channel, etc.
  • the first time period can be a slot, a half slot or one or more symbols.
  • the second time period, the third time period, and the fourth time period can also be any length of time, and the length of these time periods is not limited in this application.
  • the first time period is before the second time period, which can be interpreted as one or a combination of the following situations: the start time domain position of the first time period is before the start time domain position of the second time period, and the end time of the first time period
  • the domain position is before the end time domain position of the second period, and the end time domain position of the first period is before the start time domain position of the second period.
  • the time domain position can be a symbol, a half slot, or a slot.
  • the start time domain symbol of the first time period is before the start time domain symbol of the second time period, that is, the first time period is before the second time period, and the second time period There may or may not be overlapping time domain symbols with the first time period.
  • the explanation in this paragraph is applicable to other descriptions of the sequence of time domain positions in this application.
  • the terminal device receives the first downlink channel first, and then the second downlink channel. Because the time domain position (fourth time period) of the first uplink channel corresponding to the first downlink channel is located in the second uplink corresponding to the second downlink channel After the time domain position (third time period) of the channel, therefore, the terminal device determines that the current scene belongs to an out-of-sequence scheduling scene.
  • the first downlink channel and the second downlink channel may be downlink data channels, for example, the two downlink channels are both PDSCH.
  • the first uplink channel and the second uplink channel are channels for transmitting HARQ information, for example, the two uplink channels are both PUCCH.
  • the first downlink channel and the second downlink channel may be downlink control channels, for example, the two downlink channels are both PDCCHs.
  • the first uplink channel and the second uplink channel are channels for transmitting uplink service data, for example, the two uplink channels are both PUSCH.
  • the channels applicable to this application are not limited to the above two examples.
  • the first uplink channel and the second uplink channel are channels for transmitting HARQ information
  • the first uplink channel and the second uplink channel may also be PUSCH;
  • the channel and the second uplink channel may also be one PUSCH and one PUCCH.
  • the terminal device After receiving the first downlink channel and the second downlink channel, the terminal device can perform the following steps.
  • the terminal device determines a first target channel to be processed preferentially from a first channel set according to a preset rule, the first channel set includes the first downlink channel and the second downlink channel, or the first channel set includes the first uplink channel And the second uplink channel.
  • the network device can perform S131, and S131 includes:
  • the network device determines the first target channel from the first channel set according to preset rules, the first channel set includes the first downlink channel and the second downlink channel, or the first channel set includes the first uplink channel and the second channel. Uplink channel.
  • the terminal device determines the first target channel from the first downlink channel and the second downlink channel, that is, the channel to be processed with priority.
  • the priority processing here can be interpreted as: the first target channel is decoded first. If the first target channel is the first downlink channel, the first downlink channel is decoded, and the second downlink channel can be buffered or the second downlink channel can be buffered or the second downlink channel can be skipped and decoded. If the target channel is the second downlink channel, the second downlink channel is decoded, and the first downlink channel can be buffered or the first downlink channel can be skipped or partial information in the first downlink channel can be skipped.
  • the PDSCH scheduled by TRP1 is the first downlink channel
  • the PDSCH scheduled by TRP2 is the second downlink channel
  • the HARQ information in time slot 3 is carried on the second uplink channel
  • the HARQ information in time slot 4 Bearer on the first uplink channel.
  • the terminal device can determine that the PDSCH scheduled by TRP1 is the first target channel (that is, the preset rule is that the occupied resources are large The channel is processed first), the second downlink channel is buffered or the second downlink channel is skipped or partial information of the second downlink channel is skipped.
  • the terminal device sends HARQ to TRP2 in time slot 3, where the HARQ includes the NACK corresponding to the transport block of the second downlink channel, and then the terminal device waits for TRP2 to retransmit the second downlink channel.
  • the terminal device sends HARQ to TRP2 in time slot 3. After the HARQ includes the NACK corresponding to the partial code block group of the second downlink channel, the terminal device waits for TRP2 to respond to the partial code block of the second downlink channel. The group retransmits.
  • the terminal equipment determines the first target channel from the first uplink channel and the second uplink channel. If the first target channel is the first uplink channel, the preparation process for sending the first uplink channel is executed, and the preparation process for sending the second uplink channel may not be executed, or the preparation process for sending the second uplink channel is executed later; If the target channel is the second uplink channel, the preparation process for sending the second uplink channel is executed, and the preparation process for sending the first uplink channel may not be executed, or the preparation process for sending the first uplink channel is executed later.
  • the DCI sent by the TRP in time slot 1 is equivalent to the first downlink channel, and the priority identifier corresponding to the first downlink channel is 0.
  • the TRP sent in time slot 2 DCI is equivalent to the second downlink channel, the priority identifier corresponding to the second downlink channel is 3, in time slot 4, the PUSCH corresponding to URLLC data is the second uplink channel, and the PDSCH corresponding to eMBB data 2 is the first uplink channel (ie,
  • the preset rule is that channels with a smaller bearer priority identifier are processed first, where the smaller the priority identifier, the more urgent or important it is.
  • the terminal device determines that the PUSCH corresponding to the URLLC data is the first target channel, and executes the preparation process for sending the URLLC data. After the URLLC data transmission is completed, the terminal device may perform a preparation process for sending the eMBB data 2, or the terminal device may request or wait for the network device to reallocate transmission resources for transmitting the eMBB data 2.
  • the terminal device determines the first target channel, the following steps can be performed.
  • the network device receives the first target channel or the HARQ information corresponding to the first target channel.
  • the terminal device applying the method 100 can determine the channels that need to be processed preferentially in different scenarios according to the actual situation. Compared with the method in the prior art that all processes the channels scheduled after the time, the method 100 can meet the needs of urgent data or The transmission requirements of more important data can improve the transmission efficiency of important emergency data.
  • the preset rule in the method 100 includes at least one of the following information:
  • A1 priority information indicated by the downlink control channel corresponding to the channel in the first channel set or priority information indicated by the channel in the first channel set;
  • TBS transport control size
  • A6 the type of uplink control information (UCI) carried by the channels in the first channel set;
  • A8 the number of transmissions corresponding to channels in the first channel set
  • A10 the time domain position of the first uplink channel and the time domain position of the second uplink channel.
  • each information corresponds to a preset rule, which will be described in detail below. It should be noted that the following rules have been listed as far as possible in different scenarios. From the foregoing description, it can be found that this application can be applied to two scenarios that are not scheduled in order. In the following example, the PDSCH description is also applicable. For the processing method when the PUSCH is scheduled out of order, it is only necessary to replace the PDSCH with the PUSCH, that is, the out-of-sequence scheduling of the PUSCH belongs to the protection scope of this application.
  • the network device may indicate the priority of the channel through the PDCCH.
  • the ID indicated by the priority bit field of the DCI in the PDCCH is used for the priority of the channel, and this bit indication field can be 1 bit, 2 bits, or 3 bits, and one of the bit status values corresponds to a priority ID.
  • Different priorities correspond to different priority identifiers.
  • the network device is configured with 2 to 8 priorities for the terminal device in advance. Among them, if 8 priorities are configured, the priority identifiers corresponding to the 8 priorities can be 0,1,2,3,4,5,6,7.
  • the terminal equipment determines the priority of the channel according to the priority of the channel indicated by the PDCCH.
  • the priority level corresponding to the priority identifier can be preset.
  • An optional preset rule is: the smaller the priority identifier, the higher the priority.
  • Another optional preset rule is: the larger the priority identifier, the higher the priority.
  • the priority identifier corresponding to PDSCH in time slot 0 is 5
  • the priority identifier corresponding to PDSCH in time slot 1 is 6
  • the priority identifier corresponding to PDSCH in time slot 2 is 0. If the priority identifier is smaller and the priority is higher, the terminal device will preferentially process the PDSCH in time slot 2.
  • the terminal device can also choose to process the PDSCH in the time slot 0 after the PDSCH in the time slot 2 is processed. If the processing capacity of the terminal equipment is left, it can also process the PDSCH in time slot 1 later.
  • the terminal device After processing the PDSCH in time slot 2, the terminal device can also skip processing the PDSCH in time slot 1 and/or the PDSCH in time slot 0 due to insufficient processing capacity, and after feedback through HARQ information, wait for the network device to retransmit The PDSCH.
  • the terminal device may also skip processing part of the code block group of PDSCH in time slot 1 and/or part of the code block group of PDSCH in time slot 0 due to insufficient processing capacity, and pass HARQ After the information is fed back, it waits for the network device to retransmit the partial code block group of the PDSCH.
  • determining the priority channel based on the priority identifier can prevent important channels from being skipped.
  • the processing capacity of the terminal device is surplus, it is possible to avoid the network device from consuming system resources again to retransmit non-important data, thereby improving the efficiency of the communication system transmission resources.
  • the foregoing priority identifier may be a transmission configuration indicator (TCI) and/or a control resource set (CORESET) identifier, and/or a priority bit field indicator.
  • TCI transmission configuration indicator
  • CORESET control resource set
  • a TCI includes a quasi co-location (QCL) relationship, which is a correspondence relationship between one or two downlink reference signals and a demodulation reference signal (DMRS) of the PDSCH.
  • QCL quasi co-location
  • DMRS demodulation reference signal
  • the TCI can be notified by the DCI in the PDCCH, can also be configured by high-level signaling, or determined by the CORESET where the PDCCH is located.
  • the high-level protocol layer is at least one protocol layer in each protocol layer above the physical layer.
  • the high-level protocol layer may specifically be at least one of the following protocol layers: Medium Access Control (MAC) layer, Radio Link Control (RLC) layer, Packet Data Convergence Protocol (Packet Data Convergence) Protocol, PDCP) layer, radio resource control (Radio Resource Control, RRC) layer, and non-access stratum (Non Access Stratum, NAS).
  • MAC Medium Access Control
  • RLC Radio Link Control
  • PDCP Packet Data Convergence Protocol
  • RRC Radio Resource Control
  • non-access stratum Non Access Stratum
  • An optional preset rule is: the higher the priority of the information in the DCI or TCI notified by higher layer signaling, the higher the priority. For example, if the information is sorted as ⁇ TCI1, TCI2 ⁇ , then the priority corresponding to TCI1 is higher than the priority corresponding to TCI2.
  • Another optional preset rule is: the lower the information in the DCI or TCI notified by higher layer signaling, the higher the priority. For example, if the information is sorted as ⁇ TCI1, TCI2 ⁇ , then the priority corresponding to TCI2 is higher than the priority corresponding to TCI1.
  • the time-frequency resource corresponding to CORESET can be used for terminal equipment to detect PDCCH or network equipment to send PDCCH.
  • a terminal equipment can be configured with one or more CORESETs for network equipment.
  • a CORESET can occupy 1 to 3 symbols in the time domain, and can occupy one or more RBs in the frequency domain.
  • the resources occupied by CORESET can be configured by high-level signaling.
  • One CORESET can contain multiple search spaces, and one search space corresponds to at least one CORESET.
  • a CORESET is associated with one or two TCIs.
  • An optional preset rule is: the smaller the CORESET flag, the higher the priority.
  • Another optional preset rule is: the larger the CORESET flag, the higher the priority.
  • Another optional preset rule is to determine the priority of the channel according to the TCI corresponding to the CORSET, where the priority of the TCI can refer to the foregoing.
  • the terminal device may determine the priority of the channel according to the priority identifier.
  • the terminal device can prioritize processing after decoding the URLLC data and sending the HARQ information PDSCH in time slot 0. If the priority of the CORESET identifier corresponding to the DCI in time slot 0 is higher than the priority of the CORESET identifier corresponding to the DCI in time slot 1, the terminal device can prioritize processing in time slot 0 after decoding the URLLC data and sending the HARQ information PDSCH.
  • the terminal device can compare the priorities of the CORESET identifiers corresponding to the two DCIs. If the priority of the CORESET identifier corresponding to the DCI in time slot 0 is the same as the priority of the CORESET identifier corresponding to the DCI in time slot 1, the terminal device can compare the priority of the TCI carried by the two DCIs.
  • Time-frequency resources include time-domain resources and/or frequency-domain resources.
  • the frequency domain resources can be one or more resource blocks (resource blocks, RB), one or more resource elements (resource elements, RE), one or more carriers/serving cells, or one Or multiple bandwidth parts (BWP).
  • the time domain resource can be one or more time slots, or one or more symbols.
  • the symbol may be an orthogonal frequency division multiplexing symbol (orthogonal frequency division multiplexing, OFDM). Among them, the OFDM symbol may use transform precoding (transform precoding), or may not use transform precoding. If the OFDM symbol uses conversion precoding, the OFDM symbol can also be called a single carrier frequency division multiplexing (SC-FDM) symbol.
  • SC-FDM single carrier frequency division multiplexing
  • the terminal device or the network device determines the priority of the channel according to the number of time-frequency resources occupied by the channel.
  • An optional preset rule is: the more time-frequency resources a channel occupies, the higher the priority of the channel.
  • Another optional preset rule is: the less time-frequency resources occupied by the channel, the higher the priority.
  • the number of RBs occupied by the PDSCH in time slot 0 is greater than the number of RBs occupied by the PDSCH in time slot 1. If the terminal device chooses to skip the PDSCH in time slot 0, the efficiency of transmission resources will be reduced. . According to the rule that the more frequency domain resources a channel occupies, the higher the priority of the channel, the terminal device determines that the PDSCH in time slot 0 has a higher priority, and the terminal device can process the PDSCH in priority and skip decoding in time slot 1. In this way, only a small number of RBs are required to retransmit the PDSCH in slot 1 so as to improve the efficiency of transmission resources of the communication system.
  • the number of symbols occupied by the PDSCH in slot 0 is greater than the number of symbols occupied by the PDSCH in slot 1. If the terminal device chooses to skip the PDSCH in slot 0, the efficiency of transmission resources will be reduced . According to the rule that the more time domain resources a channel occupies, the higher the priority of the channel, the terminal device determines that the PDSCH in time slot 0 has a higher priority, and the terminal device can process the PDSCH first and skip decoding in time slot 1. In this way, only a small number of symbols are required to retransmit the PDSCH in slot 1 so as to improve the efficiency of transmission resources of the communication system.
  • the layer where the channel is located is generally equivalent to the number of antenna ports in a 5G communication system, that is, different layers correspond to different spatial transmission channels.
  • the terminal device or the network device determines the priority of the channel according to the number of layers corresponding to the channel.
  • An optional preset rule is: the greater the number of layers corresponding to a channel, the higher the priority of the channel.
  • Another optional preset rule is: the smaller the number of layers corresponding to the channel, the higher the priority of the channel.
  • the number of layers corresponding to the PDSCH in time slot 0 is 4, and the number of layers corresponding to the PDSCH in time slot 1 is 2.
  • the terminal device determines that the priority of the PDSCH in time slot 0 is higher, and the terminal device can process the PDSCH first and skip the PDSCH in time slot 1. In this way, only a small number of antenna ports are required to retransmit the PDSCH in time slot 1, thereby improving the efficiency of transmission resources of the communication system.
  • the number of layers corresponding to the PDSCH in time slot 0 is 1, and the number of layers corresponding to the PDSCH in time slot 1 is 2.
  • the terminal device determines that the priority of the PDSCH in time slot 0 is higher, because the channels with high probability requirements are generally in the channel with layer 1
  • the terminal device can process the PDSCH preferentially and skip the PDSCH in time slot 1. In this way, it can be ensured that important channels are processed preferentially, thereby improving the transmission resource efficiency of important information.
  • the block error rate reflects the reliability of data transmission. The higher the block error rate, the less reliable the data transmission; the lower the block error rate, the more reliable the data transmission, that is, the more important the data at this time.
  • the terminal device or the network device determines the priority of the channel according to the block error rate.
  • An optional preset rule is: the lower the block error rate corresponding to the channel, the higher the priority of the channel.
  • Another optional preset rule is: the higher the block error rate corresponding to the channel, the higher the priority of the channel.
  • the block error rate corresponding to the PDSCH in time slot 0 is 0.00001
  • the block error rate corresponding to the PDSCH in time slot 1 is 0.1.
  • the terminal device determines that the priority of the PDSCH in time slot 0 is higher, and the terminal device can process the PDSCH first and skip the PDSCH in time slot 1 In this way, the PDSCH in time slot 0 has a higher probability of being received correctly, thereby improving the efficiency of transmission resources of the communication system.
  • the block error rate corresponding to the UCI carried by the PUSCH in time slot 3 is 0.00001
  • the block error rate corresponding to the UCI carried by the PUSCH in time slot 4 is 0.1.
  • the terminal device determines that the priority of the PUSCH in time slot 3 is higher, and the terminal device can process the PUSCH preferentially and skip preparing time slot 4 In this way, the PUSCH in slot 3 has a higher probability of being received correctly, thereby improving the efficiency of transmission resources of the communication system.
  • TBS can be the number of original information bits before channel coding, or the sum of the number of original information bits and the number of cyclic check bits, or the number of coded bits after channel coding.
  • the terminal device or the network device determines the priority of the channel according to the TBS carried by the channel.
  • An optional preset rule is: the larger the TBS corresponding to the channel, the higher the priority of the channel.
  • An optional preset rule is: the smaller the TBS corresponding to the channel, the higher the priority of the channel.
  • the TBS carried by the PDSCH in time slot 0 is 1000
  • the TBS carried by the PDSCH in time slot 1 is 800.
  • the terminal equipment determines that the priority of the PDSCH in time slot 0 is higher, and the terminal equipment can process the PDSCH first and skip the PDSCH in time slot 1. , Only a small amount of transmission resources are needed to retransmit the PDSCH in time slot 1, thereby improving the efficiency of transmission resources of the communication system.
  • the TBS carried by the PUSCH in time slot 3 is 1000
  • the TBS carried by the PUSCH in time slot 4 is 800.
  • the terminal device determines that the priority of the PUSCH in time slot 3 is higher, and the terminal device can process the PUSCH first and skip preparing the PUSCH in time slot 4 In this way, the PUSCH in slot 4 can be retransmitted with only a small amount of transmission resources, thereby improving the efficiency of transmission resources of the communication system.
  • UCI generally includes: HARQ information, scheduling request (scheduling request, SR) and channel state information (channel state information, CSI).
  • HARQ information includes ACK and ACK.
  • SR includes positive SR and negative SR.
  • a positive SR represents that the terminal device currently has a request for uplink data transmission, and a negative SR represents that the terminal device has no request for uplink data transmission.
  • CSI generally includes channel quality information (channel quality indicator, CQI), rank indicator (rank indicator, RI), precoding matrix indicator (precoding matrix indicator, PMI), channel state information reference signal resource indicator (CSI reference signal resource indicator, CRI) ) And a combination of one or more of the measurement link configuration set information.
  • the terminal device or the network device determines the priority of the channel according to the type of UCI carried by the channel. Different UCIs are of different importance. For example, HARQ information is the basis for network equipment to decide whether to retransmit. In order to ensure the reliability of data transmission, network equipment needs to obtain HARQ information as soon as possible.
  • the CSI is information of lower importance. Even if the network device does not obtain the CSI, the network device can choose to use a lower bit rate for transmission to overcome possible communication interference.
  • an optional rule is that the priority of HARQ is greater than the priority of CSI, or the priority of HARQ is greater than the priority of the first type of CSI, and the priority of the first type of CSI is greater than the priority of the second type of CSI.
  • the UCI carried by the PUSCH in time slot 3 contains HARQ information
  • the UCI carried by the PUSCH in time slot 4 only contains CSI.
  • the terminal device determines that the PUSCH in time slot 3 has a higher priority, and the terminal device can process the PUSCH preferentially and skip preparing the PUSCH in time slot 4, so that the transmission reliability of important information can be guaranteed.
  • the terminal device or the network device determines the priority of the channel according to the HARQ process number corresponding to the channel.
  • the network device can indicate the HARQ process number corresponding to the channel through the PDCCH.
  • Different HARQ process numbers correspond to different priorities.
  • the network device is configured with 2 to 12 HARQ process numbers for the terminal device in advance. Among them, if 12 HARQ process numbers are configured, the HARQ process numbers can be 0-11.
  • the priority level corresponding to the HARQ process number can be preset or configured by higher layer signaling.
  • An optional preset rule is: the smaller the HARQ process number, the higher the priority.
  • Another optional preset rule is: the larger the HARQ process number, the higher the priority.
  • the HARQ process number corresponding to PDSCH in time slot 0 is 5
  • the HARQ process number corresponding to PDSCH in time slot 1 is 6
  • the HARQ process number corresponding to PDSCH in time slot 2 is 0. If the HARQ process number is smaller and the priority is higher, the terminal device will preferentially process the PDSCH in time slot 2.
  • the terminal equipment can also choose to process the PDSCH in the time slot 0 first after the PDSCH processing in the time slot 2 is completed. If the processing capacity of the terminal equipment is left, it can also process the PDSCH in time slot 1 later.
  • the terminal device After processing the PDSCH in time slot 2, the terminal device can also skip processing the PDSCH in time slot 1 and/or the PDSCH in time slot 0 due to insufficient processing capacity, and after feedback through HARQ information, wait for the network device to retransmit The PDSCH.
  • the terminal device may also skip processing part of the code block group of PDSCH in time slot 1 and/or part of the code block group of PDSCH in time slot 0 due to insufficient processing capacity, and pass HARQ After the information is fed back, it waits for the network device to retransmit the partial code block group of the PDSCH.
  • the HARQ process number corresponding to DCI in time slot 0 is 5
  • the HARQ process number corresponding to DCI in time slot 1 is 6, and the HARQ process number corresponding to DCI in time slot 2 is 0.
  • the terminal device will preferentially prepare the PUSCH corresponding to the DCI in time slot 0. After the transmission of the PUSCH corresponding to the DCI in the time slot 0 is completed, if the processing capacity of the terminal device is still remaining, the PUSCH corresponding to the DCI in the time slot 1 and the time slot 2 can be prepared subsequently.
  • the terminal equipment can also skip preparing the PUSCH corresponding to the DCI in time slot 1 and/or the PUSCH corresponding to the DCI in time slot 2 after the transmission of the PUSCH corresponding to DCI in time slot 0 is completed, and wait for the network equipment to re-instruct the terminal The device retransmits the PUSCH.
  • determining the priority channel based on the HARQ process ID can prevent important channels from being skipped.
  • the processing capacity of the terminal device is surplus, it is possible to avoid the network device from consuming system resources again to retransmit non-important data, thereby improving the efficiency of the communication system transmission resources.
  • the number of transmission times corresponding to the channel is a positive integer, and the number of transmission times corresponding to the channel may be configured by high-level signaling, or may be predefined, or indicated by downlink control information.
  • the number of channel transmissions can be a value from 1 to 8.
  • the number of transmissions usually refers to the number of repeated transmissions of a channel, that is, the number of times the data carried by a channel is transmitted on multiple time-frequency resources and/or multiple antenna ports from the start to the successful transmission or the stop transmission.
  • the data sent in the two transmissions can be the same or different, that is, the entire TB can be transmitted during retransmission, or part of the TB, that is, a part of the code block group in the TB can be transmitted.
  • the terminal device or the network device determines the priority of the channel according to the number of transmissions corresponding to the channel.
  • An optional preset rule is: the greater the number of transmissions, the higher the priority.
  • Another optional preset rule is: the smaller the number of transmissions, the higher the priority.
  • the number of transmissions corresponding to the PDSCH in time slot 0 is 4, and the number of transmissions corresponding to the PDSCH in time slot 1 is 1.
  • the terminal device determines that the PDSCH in time slot 0 has a higher priority, and the terminal device can process the PDSCH in priority and/or skip processing the PDSCH in time slot 1.
  • skip processing the PDSCH in slot 1 may be skip processing the PDSCH in slot 1 TB, or skip processing a partial code block group of the PUSCH in slot 1.
  • the PDSCH in time slot 0 may be due to the maximum number of transmissions or the buffer of the terminal device may be emptied The entire data needs to be retransmitted, which reduces the efficiency of the communication system's transmission resources.
  • the terminal equipment skips the PDSCH in time slot 1, and the network equipment can also complete data transmission by retransmitting part of the code block group or all TBs of the data corresponding to the PDSCH. Improve the efficiency of communication system transmission resources.
  • the number of transmissions corresponding to DCI in time slot 0 is 1, and the number of transmissions corresponding to DCI in time slot 1 is 4.
  • the terminal device determines that the DCI in time slot 1 has a higher priority, and the terminal device can prioritize the preparation of the PUSCH corresponding to the DCI.
  • the terminal device can skip the preparation time.
  • skipping the preparation of the PUSCH corresponding to the DCI in time slot 0 may be skipping preparation of the transport block TB corresponding to the PUSCH, or skip preparation of the partial code block group corresponding to the PUSCH.
  • the PUSCH corresponding to DCI in time slot 0 is prepared first, the PUSCH corresponding to DCI in time slot 1 may reach the maximum number of transmissions or the terminal equipment If the buffer is emptied and the entire data needs to be retransmitted, the efficiency of the transmission resources of the communication system will be reduced. According to the rule of "the greater the number of transmissions, the higher the priority", the terminal equipment skips the PUSCH corresponding to DCI in time slot 0, and the network equipment can also complete by retransmitting part of the code block group or all TB of the data corresponding to the PDSCH Data transmission, thereby improving the efficiency of communication system transmission resources.
  • the terminal device or the network device may also determine the priority of the channel according to the time domain position of the first downlink channel and the time domain position of the second downlink channel.
  • An optional preset rule is: the lower the time domain position of the channel, the higher the priority of the channel.
  • the time domain position of the first downlink channel is after the time domain position of the second downlink channel, and there are the following situations:
  • Case 3 The start symbol of the first downlink channel is before the start symbol of the second downlink channel, and the end symbol of the first downlink channel is after the end symbol of the second downlink channel;
  • Case 4 The start symbol of the first downlink channel is after the end symbol of the second downlink channel.
  • the time domain position of the downlink channel is lower, indicating that the data carried or scheduled by the downlink channel is urgent data or important data.
  • the priority is higher.
  • the PDSCH in time slot 2 is located after the PDSCH in time slot 1 and time slot 0, but the HARQ information corresponding to the PDSCH in time slot 2 is scheduled in advance, indicating that the PDSCH in time slot 2 carries More important data, therefore, the terminal equipment can prioritize the PDSCH in time slot 2.
  • the terminal device can prioritize the PUSCH in the first half of time slot 4.
  • Another optional preset rule is: the higher the time domain position of the channel, the higher the priority of the channel.
  • the time domain position of the first channel is before the time domain position of the second downlink channel, there are the following situations:
  • Case 3 The start symbol of the first downlink channel is after the start symbol of the second downlink channel, and the termination symbol of the first downlink channel is before the termination symbol of the second downlink channel;
  • Case 4 The end symbol of the first downlink channel is before the start symbol of the second downlink channel.
  • the lower channel may not necessarily be a channel carrying important data according to the time domain position. Therefore, the terminal device may preferentially process the downlink channel that arrives earlier, or the terminal device may preferentially process the uplink channel corresponding to the downlink channel that arrives earlier.
  • the PDSCH in time slot 1 is located after the PDSCH in time slot 0, but the HARQ information corresponding to the PDSCH in time slot 1 is scheduled in advance, indicating that the PDSCH in time slot 1 is not scheduled in order channel. Since TRP1 and TRP2 are in a non-ideal backhaul connection state, the terminal device can preferentially process the PDSCH in time slot 0.
  • the advantage of this is that the PDSCH in time slot 0 is the first channel to be received.
  • the terminal device receives the DCI in time slot 1
  • the decoding of the PDSCH in time slot 0 may have been almost completed, skipping in time slot 0
  • the PDSCH will lead to a waste of computing resources, and may cause retransmission. Therefore, the terminal device preferentially processes the PDSCH in time slot 0 to improve the processing efficiency of the terminal device and the efficiency of communication resources.
  • the DCI in time slot 1 is after the DCI in time slot 0, but the PUSCH corresponding to the DCI in time slot 1 is scheduled in advance, indicating that the PUSCH in time slot 3 is a channel that is not scheduled in sequence . Since TRP1 and TRP2 are in a non-ideal backhaul connection state, the terminal device can preferentially process the PDSCH in time slot 4. In this way, the terminal device can decode in order, reducing the complexity of processing tasks for the terminal device.
  • the terminal device or the network device may also determine the priority of the channel according to the time domain position of the first uplink channel and the time domain position of the second uplink channel.
  • An optional preset rule is: the higher the time domain position of the channel, the higher the priority of the channel.
  • the time domain position of the first uplink channel is after the time domain position of the second uplink channel, and the following situations exist:
  • Case 3 The start symbol of the first uplink channel is before the start symbol of the second uplink channel, and the termination symbol of the first uplink channel is after the termination symbol of the second uplink channel;
  • Case 4 The start symbol of the first uplink channel is after the end symbol of the second uplink channel.
  • the time domain position of the uplink channel is higher, indicating that the data carried by the uplink channel is urgent data or important data, and the priority of the uplink channel Higher.
  • the HARQ information corresponding to the URLLC data in time slot 4 is located before the HARQ information corresponding to eMBB data 1 and eMBB data 2, indicating that the channel in the first half of time slot 4 carries more important data. Therefore, the terminal equipment
  • the channel in the first half of time slot 4 (for example, PUCCH) can be processed preferentially.
  • the PUSCH corresponding to URLLC data in time slot 4 is located before the PUSCH corresponding to eMBB data 1 and eMBB data 2, indicating that the PUSCH in the first half of time slot 4 carries more important data. Therefore, the terminal equipment The PUSCH in the first half of slot 4 can be processed preferentially.
  • the above-mentioned various rules may be defined by the communication protocol, or configured by the network equipment through high-level signaling, or instructed by the network equipment through downlink control information.
  • High-level signaling is usually long-term information, that is, the content configured by the network equipment through the high-level signaling is valid for a long time, unless the network equipment reconfigures this high-level signaling.
  • Dynamic signaling is usually short-term information, that is, the content configured by the network device through dynamic signaling is effective for a short time.
  • the dynamic signaling may be DCI. After the transmission of the information scheduled by the DCI is completed, the content indicated by the DCI becomes invalid.
  • the terminal device can determine the order of applying the rules according to the priority of each rule.
  • S130 may include the following steps:
  • the terminal device determines the candidate target channel from the first channel set according to the first preset rule
  • the terminal device determines that the candidate target channel is the first target channel; if the candidate target channel includes multiple channels, the terminal device determines the first target channel from the candidate target channels according to the second preset rule .
  • the second preset rule is a rule different from the first preset rule. If the second preset rule still cannot determine a channel, the new preset rule continues to be used to determine the first target channel until a channel is determined from the first channel set, that is, the first target channel. It is understandable that in the process of determining the first target channel, each preset rule is used only once. After a preset rule is used, the terminal device will use one of the other unused preset rules or Various processes are performed to determine the first target channel.
  • the first preset rule and the second preset rule may be the above-mentioned rule containing different information in A1 to A10, which is not limited in this application.
  • sequence of the preset rules is A1->A5->A2, or A1->A8->A2, or A1->A8->A2->A9 (or A10).
  • the preset rules include A1 rules, A2 rules, and A5 rules.
  • the priority of the rule containing A1 is higher than the priority of the rule containing A5, and the priority of the rule containing A5 is higher than the priority of the rule containing A2.
  • the terminal device can first apply the rule including A1, if the priority identifiers of the two channels are the same or in the same priority identifier set.
  • the terminal device can apply the rule including A5 again, and determine the priority of the two channels according to the size of the TBS carried by the two channels. If the TBS carried by the two channels are the same or within the same TBS value range, the terminal device can apply the rule including A2 again, and determine the priority of the two channels according to the number of time-frequency resources occupied by the two channels .
  • the current rules used by terminal equipment include:
  • Rule 1 The higher the identifier corresponding to the priority identifier of the channel, the higher the priority of the channel.
  • Rule 3 The more time-frequency resources a channel occupies, the higher the priority of the channel.
  • the current rules used by terminal equipment include:
  • Rule 1 The higher the identifier corresponding to the priority identifier of the channel, the higher the priority of the channel.
  • Rule 2 The greater the number of transmissions corresponding to a channel, the higher the priority of the channel.
  • Rule 3 The more time-frequency resources a channel occupies, the higher the priority of the channel.
  • the terminal device After receiving the PDSCH in time slot 0 and time slot 1, the terminal device first compares the priority identifiers of the two PDSCHs according to rule 1. If the priority identifiers of the two PDSCHs are the same, the transmission times of the two PDSCHs are compared according to rule 2. If the number of transmissions corresponding to the PDSCH in time slot 0 is 4 and the number of transmissions corresponding to the PDSCH in time slot 1 is 2, the terminal device determines that the priority of the PDSCH in time slot 0 is higher and processes the PDSCH in time slot 0 first. If the number of transmissions corresponding to the PDSCH in time slot 0 is the same as the number of transmissions corresponding to PDSCH in time slot 1, the terminal device compares the time-frequency resources occupied by the two PDSCHs according to rule 3.
  • the preset rules include A1 rules, A2 rules, A8 rules, and A9 (or A10) rules.
  • the priority of the rule containing A1 is higher than the priority of the rule containing A8, the priority of the rule containing A8 is higher than the priority of the rule containing A2, and the priority of the rule containing A2 is higher than the priority of the rule containing A9 (or A10)
  • the terminal device can first apply the rule including A1, if the priority identifiers of the two channels are the same or in the same priority identifier set.
  • the terminal device can apply the rule including A8 again, and determine the priority of the two channels according to the size of the transmission times of the two channels.
  • the terminal device can then apply the rule including A2 to determine the priority of the two channels according to the number of time-frequency resources occupied by the two channels level. If the number of time-frequency resources occupied by the two channels is the same or within the same value range of the number of time-frequency resources, the terminal device can then apply the rule including A9 (or A10) according to the time-frequency resources occupied by the two channels. The time domain position of the frequency resource determines the priority of the two channels.
  • the current rules used by terminal equipment include:
  • Rule 1 The higher the identifier corresponding to the priority identifier of the channel, the higher the priority of the channel.
  • Rule 2 The greater the number of transmissions corresponding to a channel, the higher the priority of the channel.
  • Rule 3 The more time-frequency resources a channel occupies, the higher the priority of the channel.
  • Rule 4 The lower the time domain position of the downlink channel, the higher the priority of the downlink channel; or the earlier the time domain position of the uplink channel, the higher the priority of the uplink channel
  • rule in rule 3 can also be replaced with a rule containing any information from A3 to A10.
  • the order of the rules may be pre-defined or configured by high-level signaling, which is not limited in the present invention.
  • the terminal device may occupy according to the downlink channel
  • the time interval between the time domain resource and the uplink channel occupying the time domain resource and the first time interval threshold determine the first target channel for priority processing.
  • the terminal device obtains the first time interval threshold, where the first time interval threshold may be predefined, or configured by the network device through high-level signaling, or indicated by the network device through downlink control information .
  • the terminal device may preferentially process the second downlink channel and skip processing the first downlink channel.
  • the terminal device may preferentially process the second downlink channel and process the first downlink channel Or process part of the code block group of the first downlink channel.
  • the terminal device may preferentially process the second uplink channel and skip processing the first uplink channel.
  • the terminal device may preferentially process the second uplink channel and process the first uplink channel.
  • the definition of the channel time interval can be one of the following situations:
  • Channel A# is the first downlink channel, and channel B# is the second downlink channel; or, channel A# is the first uplink channel, and channel B# is the second uplink channel.
  • network equipment may also configure other content related to out-of-sequence scheduling through high-level signaling.
  • the method 100 may further include the following steps:
  • the terminal device receives the first configuration information or the second configuration information.
  • the first configuration information is used to indicate that the backhaul between multiple network devices corresponding to the terminal device is an ideal backhaul or is used to indicate that the terminal device corresponds to a network device, and the second configuration information Used to indicate that the backhaul between multiple network devices corresponding to the terminal device is non-ideal backhaul.
  • the aforementioned network device may be a TRP, for example.
  • the terminal device can determine the state of the current network device through the first configuration information or the second configuration information, and select an appropriate rule according to the state of the network device.
  • the terminal device can apply the following rules: the channel with the lower position in the time domain has a higher priority; if the terminal device receives the second configuration information, the terminal device can apply A1- A combination of one or more preset rules in A10.
  • the advantage of the above solution is that when the backhaul between multiple network devices is an ideal backhaul, or when a terminal device corresponds to a network device, the channel with the later position in the time domain must carry or schedule important data, and the time domain position is used
  • the higher priority rules of the lower channels can prevent important data from being skipped.
  • the channel located later in the time domain does not necessarily carry or schedule important data.
  • the terminal device judges the channel to be processed first according to other rules, which is beneficial to the terminal device to determine the load.
  • the channel of important information is conducive to improving the efficiency of communication resources.
  • the method 100 may also include the following steps:
  • the terminal device receives the third configuration information, and the third configuration information is used to configure whether the terminal device can perform out-of-sequence scheduling.
  • the network device can enable or disable this ability according to the actual situation.
  • the network device can use the third configuration information to enable the non-sequential scheduling capability of the terminal device, thereby effectively improving the endurance and reliability of the terminal device.
  • the third configuration information can be a bit. When the value of this bit is "0", it means that the ability to schedule out of order is disabled; when the value of this bit is "1", it means that it is not enabled. The ability of sequential scheduling.
  • the third configuration information may also be other types of information. For example, whether the terminal device can perform out-of-sequence scheduling can be implicitly configured through different preamble sequences.
  • the terminal device can send capability information to the network device, and the capability information is used to indicate whether the terminal device supports out-of-sequence scheduling.
  • the network device may schedule channels out of order so that important data can be transmitted as soon as possible. If the capability information reported by the terminal device indicates that the terminal device supports out-of-sequence scheduling, the network device may also schedule the channels in order. Optionally, the network device may send third configuration information.
  • the network device may schedule channels in order to ensure the transmission reliability of important data.
  • the network device may not send the third configuration information, or the network device may send the third configuration information to indicate that the terminal device cannot perform out-of-sequence scheduling.
  • the foregoing non-sequential scheduling includes: non-sequential scheduling from the downlink data channel to HARQ information, and/or non-sequential scheduling from the downlink control channel to the uplink data channel.
  • the terminal device supports the out-of-sequence scheduling without distinguishing content.
  • the terminal device also supports only one type of non-sequential scheduling, that is, the terminal device can further indicate the specific capabilities that it supports in the capability information, so that the network device can schedule more accurately. For example, the terminal device reports that it supports out-of-sequence scheduling from the downlink data channel to HARQ information, but the terminal device reports that it does not support the out-of-sequence scheduling from the downlink control channel to the uplink data channel.
  • the terminal device reports that it does not support the out-of-sequence scheduling from the downlink data channel to the HARQ information, but the terminal device reports that it supports the out-of-sequence scheduling from the downlink control channel to the uplink data channel.
  • the above mainly introduces a scenario based on two downlink channels out of order, or a scenario based on two uplink channels out of order.
  • the network device sends three or more downlink channels, for example, the network device also sends a third downlink channel
  • the terminal device can further determine the priority of the third downlink channel, so that the processing can be completed on the first target channel Then it is determined whether to process channels other than the first target channel.
  • the first target channel is the first downlink channel, then the terminal device needs to further determine whether to process the second downlink channel and the third downlink channel.
  • the terminal device can further determine the priority of the third uplink channel, so as to complete the processing on the first target channel Then it is determined whether to process channels other than the first target channel. For example, the first target channel is the second uplink channel, then the terminal device needs to further determine whether to process the first uplink channel and the third uplink channel.
  • the first channel set in S130 may further include a third downlink channel, and the method 100 may further include:
  • the terminal device receives the third downlink channel in the fifth time period. There is a correspondence between the third downlink channel and the third uplink channel.
  • the third uplink channel occupies the sixth time period, and the fifth time period is located before the second time period and is located in the sixth time period Before, the sixth period was after the third period.
  • the terminal device determines the second target channel to be processed preferentially from channels other than the first target channel in the first channel set according to a preset rule.
  • Channels other than the first target channel in the first channel set may be referred to as other channels. If the processing capacity of the terminal device still remains, after the processing of the first target channel is completed, the channel to be processed first, that is, the second target channel, may be determined from other channels.
  • the terminal device may directly determine the second target channel from other channels by using the rule used when determining the first target channel.
  • the terminal device may also first determine the relationship between the sum of the values of the first information of other channels and the threshold of the first information, and then determine the second target channel.
  • the foregoing first information is at least one of time-frequency resources, number of layers, and TBS.
  • the PDSCH in time slot 2 is equivalent to the first target channel
  • the PDSCH in time slot 0 and the PDSCH in time slot 1 are equivalent to other channels.
  • the time-frequency resource occupied by PDSCH in time slot 0 is 8 RBs, the number of layers is 4, and the TBS is 1000 bits
  • the time-frequency resource occupied by PDSCH in time slot 1 is 7 RBs, the number of layers is 2, and the TBS is 500 Bit
  • the threshold of time-frequency resources is 100 RBs, the threshold of the number of layers is 6, and the threshold of TBS is 800 bits.
  • the terminal device can first determine whether the sum of the time-frequency resources of the above two PDSCHs is greater than the threshold of the time-frequency resources. If it is greater, it needs to remove one or more PDSCHs before comparing whether the sum of the remaining PDSCHs is greater than the time-frequency resources. Resource threshold.
  • the sum (15) of the time-frequency resources of the two PDSCHs is less than the threshold (100) of the time-frequency resources. Therefore, the terminal device can determine whether the sum of the number of layers of the two PDSCHs is greater than the threshold of the number of layers. If it is greater than, then After removing one or more PDSCHs, it is necessary to compare whether the sum of the number of layers of the remaining PDSCH is greater than the number of layers threshold.
  • the sum of the number of layers of the two PDSCHs (6) is equal to the number of layers threshold (6); therefore, the terminal device can determine whether the sum of the TBS of the two PDSCHs is greater than the threshold of TBS, and if it is greater, one or more layers need to be removed. After each PDSCH, compare whether the sum of the TBS of the remaining PDSCHs is greater than the TBS threshold.
  • the terminal device can determine the PDSCH in time slot 1 (TBS is 500) as the second target channel, and decode The PDSCH.
  • TBS is 500
  • the PDSCH in time slot 0 can be skipped, or it can be processed after the PDSCH in time slot 1 is processed.
  • the terminal device can also determine whether other channels can be processed in all according to a single threshold.
  • the specific numerical value of each of the above thresholds can be set according to the processing capability of the terminal device, that is, the terminal device reports the processing capability of the terminal device. If the processing capability of the terminal device is strong, the threshold can be set to a larger value; if the processing capability of the terminal device is weak, the threshold can be set to a smaller value.
  • the specific values of the above thresholds can also be pre-defined or configured by high-level signaling.
  • the terminal device can determine the second target channel from other channels according to the rule used when determining the first target channel, or it can determine the second target channel from other channels according to different
  • the rule used for a target channel determines the second target channel from other channels. If the sum of the values of the first information of other channels is greater than the first information threshold, the terminal device can determine the second target from the remaining channels according to the rules used when determining the first target channel after removing some channels from the other channels Channel, the second target channel can also be determined from other channels according to a rule different from that used when the first target channel is used.
  • the rules for determining the first target channel and the second target channel may be the same or different, which is not limited in the present invention.
  • the threshold of the time-frequency resource may be one or more RB numbers, for example, any integer from 2 to 136. Some RB thresholds are enumerated below. However, these values are only examples and should not be construed as limiting the application.
  • the RB threshold may also be a positive integer greater than 136.
  • the threshold of the number of layers may be one or more layers, for example, any integer in the range of 2-8.
  • the following enumerate some thresholds for the number of layers, but these values are only examples and should not be construed as limiting the application.
  • the threshold for the number of layers can also be a positive integer greater than 8.
  • the threshold of TBS is 3824, 3824*2, 3824*3, 3824*4, 8824, 8824*2, 8824*3, 8824*4, 347716, 471400, and the threshold of TBS can also be greater than A positive integer equal to 8 and less than or equal to 946256, this application does not limit the threshold of TBS.
  • the first information is the number of RBs, the threshold of the first information is 100 RBs, the number of RBs occupied by eMBB data carried by PDSCH1 is 8, the number of RBs occupied by eMBB data carried by PDSCH2 is 7, and the number of RBs occupied by eMBB data carried by PDSCH3 The number is 1, and the number of RBs occupied by eMBB data carried by PDSCH4 is 90.
  • the terminal device can determine the second target channel according to one of the following three methods.
  • the M channels with the smallest difference between the sum of the value of the first information corresponding to the channel and the threshold of the first information are the channels for priority processing, and M is a positive integer.
  • the terminal device may further determine the first channel to be processed from the three channels based on the rule for determining the first target channel.
  • the above method can make the most of the processing capacity of the terminal device.
  • the M channels with the largest difference between the value of the first information corresponding to the channel and the threshold of the first information are the channels for priority processing, and M is a positive integer.
  • PDSCH1, PDSCH2 and PDSCH3 is the second target channel that needs to be processed preferentially among other channels.
  • the terminal device may further determine the first channel to be processed from the three channels based on the rule for determining the first target channel.
  • the threshold of the difference between the number of RBs and the threshold of the number of RBs can be set according to the processing capability of the terminal device. If the processing capability of the terminal device is strong, the threshold can be set to a larger value; if the processing capability of the terminal device is weak, then The threshold can be set to a smaller value.
  • the difference threshold can also be pre-defined or configured by higher layer signaling.
  • the foregoing method can reduce the complexity of determining the second target channel by the terminal device.
  • the M channels with the smallest difference between the value of the first information corresponding to the channel and the threshold of the first information are the channels for priority processing, and M is a positive integer.
  • the threshold of the difference between the number of RBs and the threshold of the number of RBs can be set according to the processing capability of the terminal device. If the processing capability of the terminal device is strong, the threshold can be set to a larger value; if the processing capability of the terminal device is weak, then The threshold can be set to a smaller value.
  • the difference threshold can also be pre-defined or configured by higher layer signaling.
  • the foregoing method can reduce the complexity of determining the second target channel by the terminal device.
  • the terminal device may also determine the second target channel according to the time interval and the first time interval threshold. That is, the first information may be a time interval.
  • the foregoing time interval includes at least one of the following situations: the time interval between the first downlink channel occupies time domain resources and the first uplink channel occupies time domain resources, the second downlink channel occupies time domain resources and the second uplink channel occupies time domain resources The time interval between the time domain resource occupied by the third downlink channel and the time domain resource occupied by the third uplink channel, the time domain resource occupied by the first downlink channel and the time domain resource occupied by the second downlink channel, the second downlink channel The time interval between the time domain resource occupied by the channel and the time domain resource occupied by the third downlink channel, the time interval between the time domain resource occupied by the first downlink channel and the time domain resource occupied by the third downlink channel, and the time domain resource occupied by the first uplink channel 2.
  • the first time interval threshold may be one or more symbols, or one or more time slots, or a time period of one or several milliseconds (ms). For example, 3 symbols, 3.5 symbols, 4 symbols, 4.5 symbols, 5 symbols, 5.5 symbols, 6 symbols, 6.5 symbols, 7 symbols, 7.5 symbols, 8 symbols, 8.5 symbols, 9 symbols, 9.5 symbols, 10 symbols, 10.5 symbols, 11 symbols, 11.5 symbols, 12 symbols, 12.5 symbols, 13 symbols, 13.5 symbols, 14 symbols, 1 slot, 2 Time slots, 3 time slots, 4 time slots, 5 time slots, 6 time slots, 7 time slots, 8 time slots, 0.25ms, 0.5ms, 1ms.
  • the first time interval threshold may also be other values, for example, starting from 14 symbols, each 0.5 symbol takes a value, up to 112 symbols.
  • the first information may also be the HARQ process number, and the threshold of the HARQ process number may be 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12.
  • the threshold of the HARQ process number can be a positive integer greater than 12.
  • the terminal device may also determine whether to process other channels according to the value of the first information corresponding to the first target channel and the threshold of the first information.
  • the terminal device preferentially processes the first target channel and skips processing other channels.
  • the first information here may be one piece of information or a combination of multiple pieces of information. That is to say, when one of the multiple pieces of information exceeds the threshold, the terminal device only processes the first target channel. It may also be that when all the information in the multiple information exceeds the threshold, the terminal device only processes the first target channel.
  • the advantage of the above implementation is that when the information corresponding to the most important channel exceeds the threshold, it can be considered that all the capabilities of the terminal device can only process the first target channel at this time, and there is no remaining capability to process other channels. Use low-cost terminal equipment in out-of-sequence scheduling scenarios.
  • the terminal device preferentially processes the first target channel and processes the aforementioned second target channel. Further optionally, the terminal device skips processing channels other than the first target channel and the second target channel. Further optionally, the first information corresponding to the other channels exceeds the threshold of the first information at this time.
  • the first information here may be one piece of information or a combination of multiple pieces of information. If at least one piece of first information corresponding to the first target channel does not exceed the threshold, the terminal device also processes the second target channel. Or, if all the first information corresponding to the first target channel does not exceed the threshold, the terminal device also processes the second target channel.
  • the processing procedure of the network device corresponds to the processing procedure of the terminal device.
  • the terminal device receives information from the network device, which means that the network device sends the information.
  • the terminal device sends information to the network device, which means that the network device receives the information from the terminal device. Therefore, even if the processing procedure of the network device is not clearly stated in the above individual places, those skilled in the art can clearly understand the processing procedure of the network device based on the processing procedure of the terminal device.
  • the terminal device receives the first downlink channel and the second downlink channel from the network device, which means that the network device has performed the following steps:
  • the network device transmits the first downlink channel in the first time period, and there is a corresponding relationship between the first downlink channel and the first uplink channel.
  • the first uplink channel occupies the fourth time period, and the fourth time period is located in the After the first period.
  • the network device transmits the second downlink channel in the second time period, and there is a corresponding relationship between the second downlink channel and the second uplink channel, the second uplink channel occupies the third time period, and the second time period is located in the After the first time period and before the third time period, the third time period is before the fourth time period.
  • the network device can also perform the following steps:
  • the network device determines a first target channel from a first channel set according to a preset rule, the first channel set includes the first downlink channel and the second downlink channel, or the first channel set Including the first uplink channel and the second uplink channel.
  • the network device receives the first target channel or HARQ information corresponding to the first target channel.
  • the network device applying the method 100 can determine the channel to be received in different scenarios (that is, the channel that needs to be processed preferentially by the terminal device) according to the actual situation, compared with the channel that is scheduled after the reception time (or channel) in the prior art. ,
  • the HARQ information corresponding to the channel) method, the network device applying the method 100 can meet the transmission requirements of emergency data or more important data, thereby improving the transmission efficiency of important emergency data.
  • the communication device includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the present application may divide the communication device into functional units according to the foregoing method examples.
  • each function may be divided into each functional unit, or two or more functions may be integrated into one functional unit.
  • the communication device may include a processing unit for performing the determined action in the above method example, a receiving unit for implementing the receiving action in the above method example, and a sending unit for implementing the sending action in the above method example.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in this application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 15 shows a schematic structural diagram of a communication device provided by the present application.
  • the communication device 1500 may be used to implement the methods described in the foregoing method embodiments.
  • the communication device 1500 may be a chip, a network device or a terminal device.
  • the communication device 1500 includes one or more processors 1501, and the one or more processors 1501 can support the communication device 1500 to implement the method in the method embodiment corresponding to FIG. 14.
  • the processor 1501 may be a general-purpose processor or a special-purpose processor.
  • the processor 1501 may be a central processing unit (CPU) or a baseband processor.
  • the baseband processor can be used to process communication data (for example, the data carried by the various channels described above), and the CPU can be used to control communication devices (for example, network equipment, terminal equipment, or chips), execute software programs, and process Software program data.
  • the communication device 1500 may further include a transceiving unit 1505 to implement signal input (reception) and output (transmission).
  • the communication device 1500 may be a chip, and the transceiver unit 1505 may be the input and/or output circuit of the chip, or the transceiver unit 1505 may be a communication interface of the chip, and the chip may be used as a terminal device or a network device or other wireless communication. Components of equipment.
  • the communication device 1500 may include one or more memories 1502 with a program 1504 stored thereon.
  • the program 1504 can be run by the processor 1501 to generate instructions 1503 so that the processor 1501 executes the methods described in the foregoing method embodiments according to the instructions 1503.
  • the memory 1502 may also store data.
  • the processor 1501 may also read data stored in the memory 1502 (for example, data carried by each channel in the method 100). The data may be stored at the same storage address as the program 1504, and the data may also be the same as the program 1504. 1504 is stored in a different storage address.
  • the processor 1501 and the memory 1502 may be provided separately or integrated together, for example, integrated on a single board or a system on chip (SOC).
  • SOC system on chip
  • the communication device 1500 may further include a transceiver unit 1505 and an antenna 1506.
  • the transceiver unit 1505 may be called a transceiver, a transceiver circuit or a transceiver, and is used to implement the transceiver function of the communication device through the antenna 1506.
  • the processor 1501 is used to control the transceiver unit 1505 and the antenna 1506 to execute:
  • the first downlink channel is received in the first time period, there is a corresponding relationship between the first downlink channel and the first uplink channel, the first uplink channel occupies a fourth time period, and the fourth time period is located in the first time period. After a period of time
  • the second downlink channel is received in the second time period, there is a corresponding relationship between the second downlink channel and the second uplink channel, the second uplink channel occupies a third time period, and the second time period is located in the first time period After and before the third time period, the third time period is before the fourth time period;
  • the processor 1501 is further configured to execute: determining a first target channel for priority processing from a first channel set according to a preset rule, the first channel set including the first downlink channel and the second downlink channel, or , The first channel set includes the first uplink channel and the second uplink channel.
  • the processor 1501 is further configured to execute through the transceiver unit 1505 and the antenna 1506:
  • the third downlink channel is received in the fifth time period, there is a correspondence between the third downlink channel and the third uplink channel, the third uplink channel occupies a sixth time period, and the fifth time period is located in the second time period Before and before the sixth time period, and the sixth time period is after the third time period;
  • the processor 1501 is further configured to execute: according to the preset rule, determine a second target channel to be processed preferentially from channels in the first channel set except the first target channel.
  • the processor 1501 is configured to execute through the transceiver unit 1505 and the antenna 1506:
  • first configuration information is used to indicate that the backhaul between multiple network devices corresponding to the terminal device is an ideal backhaul or is used to indicate that the terminal device corresponds to one network device
  • second configuration information The configuration information is used to indicate that the backhaul between multiple network devices corresponding to the terminal device is a non-ideal backhaul.
  • the processor 1501 is configured to execute through the transceiver unit 1505 and the antenna 1506:
  • the processor 1501 is configured to execute through the transceiver unit 1505 and the antenna 1506:
  • Receive third configuration information where the third configuration information is used to configure whether the terminal device can perform out-of-sequence transmission.
  • the processor 1501 is used to control the transceiver unit 1505 and the antenna 1506 to execute:
  • the first downlink channel is sent in the first time period, the first downlink channel and the first uplink channel are in correspondence, the first uplink channel occupies the fourth time period, and the fourth time period is located in the first time period.
  • the second downlink channel is sent in the second time period, and there is a correspondence between the second downlink channel and the second uplink channel, the second uplink channel occupies a third time period, and the second time period is located in the first time period After and before the third time period, the third time period is before the fourth time period;
  • the first target channel is determined from a first channel set according to a preset rule, the first channel set includes the first downlink channel and the second downlink channel, or the first channel set includes the first channel An uplink channel and the second uplink channel;
  • channels other than the first target channel in the first channel set are other channels, and the processor 1501 is configured to execute through the transceiver unit 1505 and the antenna 1506:
  • the HARQ information corresponding to some or all of the other channels is received, and the HARQ information corresponding to some or all of the other channels is NACK.
  • the first channel set further includes a third downlink channel
  • the processor 1501 is configured to execute through the transceiver unit 1505 and the antenna 1506:
  • the third downlink channel is sent in the fifth time period, there is a corresponding relationship between the third downlink channel and the third uplink channel, the third uplink channel occupies a sixth time period, and the fifth time period is located in the second time period Before and before the sixth time period, and the sixth time period is after the third time period;
  • the processor 1501 is also used to execute:
  • the processor 1501 is further configured to execute through the transceiver unit 1505 and the antenna 1506:
  • the processor 1501 is further configured to execute through the transceiver unit 1505 and the antenna 1506:
  • the first configuration information is used to indicate that the backhaul between multiple network devices corresponding to the terminal device is an ideal backhaul or is used to indicate that the terminal device corresponds to one network device
  • the second The configuration information is used to indicate that the backhaul between multiple network devices corresponding to the terminal device is a non-ideal backhaul.
  • the processor 1501 is further configured to execute through the transceiver unit 1505 and the antenna 1506:
  • Receive capability information where the capability information is used to indicate whether the terminal device supports out-of-sequence transmission.
  • the processor 1501 is further configured to execute through the transceiver unit 1505 and the antenna 1506:
  • Send third configuration information where the third configuration information is used to configure whether the terminal device can perform out-of-sequence transmission.
  • each step of the method embodiment may be completed by a logic circuit in the form of hardware or instructions in the form of software in the processor 1501.
  • the processor 1501 can be a CPU, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices , For example, discrete gates, transistor logic devices, or discrete hardware components.
  • This application also provides a computer program product, which, when executed by the processor 1501, implements the communication method described in any method embodiment in this application.
  • the computer program product may be stored in the memory 1502, for example, a program 1504.
  • the program 1504 is finally converted into an executable object file that can be executed by the processor 1501 after preprocessing, compilation, assembly, and linking.
  • This application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a computer, the communication method described in any method embodiment in this application is implemented.
  • the computer program can be a high-level language program or an executable target program.
  • the computer-readable storage medium is, for example, the memory 1502.
  • the memory 1502 may be a volatile memory or a non-volatile memory, or the memory 1502 may include both a volatile memory and a non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM, DR RAM
  • FIG. 16 shows a schematic structural diagram of a terminal device provided in this application.
  • the terminal device 1600 can be applied to the system shown in FIG. 1 to realize the functions of the terminal device in the foregoing method embodiment.
  • FIG. 16 only shows the main components of the terminal device.
  • the terminal device 1600 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the entire terminal device. For example, the processor receives the first instruction information and the second instruction information through the antenna and the control circuit.
  • the memory is mainly used to store programs and data, such as storing communication protocols and data to be sent.
  • the control circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals.
  • the control circuit and the antenna together can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • the input and output device is, for example, a touch screen or a keyboard, and is mainly used to receive data input by the user and output data to the user.
  • the processor can read the program in the memory, interpret and execute the instructions contained in the program, and process the data in the program.
  • the processor performs baseband processing on the information to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal to obtain a radio frequency signal, and transmits the radio frequency signal to the antenna in the form of electromagnetic waves. Send outside.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into information And process the information.
  • FIG. 16 only shows one memory and one processor. In an actual terminal device, there may be multiple processors and multiple memories.
  • the memory may also be called a storage medium or a storage device, etc., which is not limited in this application.
  • the processor in FIG. 16 can integrate the functions of the baseband processor and the CPU.
  • the baseband processor and the CPU can also be independent processors, using technologies such as buses. interconnected.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple CPUs to enhance its processing capabilities, and various components of the terminal device may be connected through various buses.
  • the baseband processor may also be referred to as a baseband processing circuit or a baseband processing chip.
  • the CPU may also be called a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and the communication data may be built in the processor, or stored in the memory in the form of a program, and the processor executes the program in the memory to realize the baseband processing function.
  • the antenna and control circuit with the transceiver function can be regarded as the transceiver unit 1601 of the terminal device 1600, which is used to support the terminal device to implement the receiving function in the method embodiment, or to support the terminal device to implement the method embodiment.
  • the processor with processing function is regarded as the processing unit 1602 of the terminal device 1600.
  • the terminal device 1600 includes a transceiver unit 1601 and a processing unit 1602.
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver, and so on.
  • the device for implementing the receiving function in the transceiver unit 1601 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 1601 can be regarded as the sending unit, that is, the transceiver unit 1601 includes a receiving unit and a sending unit,
  • the receiving unit may also be called a receiver, an input port, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • the processor 1602 may be used to execute a program stored in the memory to control the transceiver unit 1601 to receive signals and/or send signals, and complete the functions of the terminal device in the foregoing method embodiments.
  • the function of the transceiver unit 1601 may be implemented by a transceiver circuit or a dedicated chip for transceiver.
  • FIG. 17 is a schematic structural diagram of a network device provided in this application, and the network device may be, for example, a base station.
  • the base station can be applied to the system shown in Fig. 1 to realize the function of the network device in the above method embodiment.
  • the base station 1700 may include one or more radio frequency units, such as a remote radio unit (RRU) 1701 and at least one baseband unit (BBU) 1702.
  • RRU remote radio unit
  • BBU baseband unit
  • the BBU 1702 may include a distributed unit (DU), or may include a DU and a centralized unit (CU).
  • DU distributed unit
  • CU centralized unit
  • the RRU 1701 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, and it may include at least one antenna 17011 and a radio frequency unit 17012.
  • the RRU1701 is mainly used for the transceiver of radio frequency signals and the conversion of radio frequency signals and baseband signals, for example, for supporting the base station to implement the sending and receiving functions in the method embodiments.
  • BBU1702 is mainly used for baseband processing and control of base stations.
  • the RRU 1701 and the BBU 1702 can be physically set together, or physically separated, that is, a distributed base station.
  • the BBU1702 can also be called a processing unit, which is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU 1702 may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the BBU 1702 can be composed of one or more single boards, and multiple single boards can jointly support a wireless access network of a single access standard, or can respectively support wireless access networks of different access standards.
  • the BBU 1702 also includes a memory 17021 and a processor 17022.
  • the memory 17021 is used to store necessary instructions and data.
  • the memory 17021 stores various finger information in the foregoing method embodiment.
  • the processor 17022 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedures in the foregoing method embodiments.
  • the memory 17021 and the processor 17022 may serve one or more boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • the base station shown in FIG. 17 is only an example, and the network device applicable to this application may also be an active antenna unit (AAU) in an active antenna system (AAS) .
  • AAU active antenna unit
  • AAS active antenna system
  • the disclosed system, device, and method may be implemented in other ways. For example, some features of the method embodiments described above may be ignored or not implemented.
  • the device embodiments described above are merely illustrative.
  • the division of units is only a logical function division. In actual implementation, there may be other division methods, and multiple units or components may be combined or integrated into another system.
  • the coupling between the units or the coupling between the components may be direct coupling or indirect coupling, and the foregoing coupling includes electrical, mechanical, or other forms of connection.
  • the size of the sequence number of each process does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • system and “network” in this article are often used interchangeably in this article.
  • the term “and/or” in this article is only an association relationship describing associated objects, which means that there can be three types of relationships. For example, A and/or B can mean that there is A alone, and both A and B exist. There are three cases of B.
  • the character “/” in this text generally indicates that the associated objects before and after are in an "or” relationship.

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

Abstract

La présente invention concerne un procédé de communication et un dispositif de communication, qui peuvent être appliqués à un scénario de planification non ordonné dans un système de communication mobile 5G. Le procédé comprend les étapes suivantes dans lesquelles : lorsqu'un dispositif de réseau a envoyé successivement deux canaux descendants, mais que la séquence temporelle de canaux montants correspondant aux deux canaux descendants est opposée à la séquence temporelle des deux canaux descendants, un dispositif terminal détermine qu'il se trouve actuellement dans un scénario de planification non ordonné, et détermine, en fonction de règles préétablies, un canal descendant ou un canal montant qui est traité de préférence. Un dispositif terminal qui applique le procédé décrit peut, en fonction des conditions réelles, déterminer des canaux qui doivent être traités de préférence dans différents scénarios. Par rapport au procédé de l'état de la technique dans lequel des canaux ayant des temps de planification ultérieurs sont toujours traités, le procédé de communication fourni dans la présente invention peut satisfaire aux exigences de transmission de données urgentes ou de données plus importantes, ce qui permet d'améliorer l'efficacité de transmission de données importantes et urgentes.
PCT/CN2020/081175 2019-03-29 2020-03-25 Procédé de communication et dispositif de communication WO2020200012A1 (fr)

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