WO2022233281A1 - 参考pdcch的确定方法、装置、设备及可读存储介质 - Google Patents

参考pdcch的确定方法、装置、设备及可读存储介质 Download PDF

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Publication number
WO2022233281A1
WO2022233281A1 PCT/CN2022/090604 CN2022090604W WO2022233281A1 WO 2022233281 A1 WO2022233281 A1 WO 2022233281A1 CN 2022090604 W CN2022090604 W CN 2022090604W WO 2022233281 A1 WO2022233281 A1 WO 2022233281A1
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pdcch
time
pdsch
pdcchs
pusch
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English (en)
French (fr)
Inventor
曹昱华
李岩
左君
郑毅
王飞
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated

Definitions

  • the embodiments of the present application relate to the field of communications technologies, and in particular, to a method, apparatus, device, and readable storage medium for determining a reference physical downlink control channel (Physical Downlink Control Channel, PDCCH).
  • PDCCH Physical Downlink Control Channel
  • Multi-TRP For the Ultra-reliable low latency communication (URLLC) scenario of Multiple Transmitting Receiving Point (Multi-TRP), if two TRPs each send PDCCH to the same user, the downlink control information carried by the two TRPs (Downlink Control Information, DCI) is the same, and the indicated slot offset (slot offset) is also the same, but the time at which the terminal receives the two PDCCHs is different, so how the UE determines the reference PDCCH is an urgent problem to be solved.
  • DCI Downlink Control Information
  • the embodiments of the present application provide a method, apparatus, device, and readable storage medium for determining a reference PDCCH, so as to solve the problem of how to determine a reference PDCCH.
  • a first aspect provides a method for determining a reference PDCCH, applied to a terminal, including:
  • the identifier (ID) of the search space (Search Space) corresponding to the PDCCH candidate, and the ID of the control resource set (CORESET) corresponding to the PDCCH one or more of the multiple PDCCH
  • the PDCCH is used as a reference PDCCH.
  • one PDCCH in the multiple PDCCHs is used as the reference PDCCH, including:
  • the first PDCCH satisfies one or more of the following:
  • the ID of the Search Space corresponding to the first PDCCH is greater than or less than the ID of the Search Space corresponding to the second PDCCH;
  • the ID of the CORESET corresponding to the first PDCCH is larger or smaller than the ID of the CORESET corresponding to the second PDCCH;
  • the reception time of the first symbol of the first PDCCH is before or after the reception time of the first symbol of the second PDCCH;
  • the second PDCCH is other PDCCH except the second PDCCH among the plurality of PDCCHs.
  • the multiple PDCCHs are used to schedule the same physical downlink shared channel (Physical Downlink Shared CHannel, PDSCH), physical uplink shared channel (Physical Uplink Shared CHannel, PUSCH), channel state information reference signal (Channel State Information Reference).
  • Physical Downlink Shared CHannel, PDSCH Physical Downlink Shared CHannel, PUSCH
  • channel state information reference signal Channel State Information Reference
  • CSI-RS Signal
  • SRS Sounding Reference Signal
  • the ID of the Search Space corresponding to the first PDCCH is larger or smaller than the ID of the Search Space corresponding to the second PDCCH, or, the ID of the CORESET corresponding to the first PDCCH is larger or smaller than the CORESET corresponding to the second PDCCH.
  • the transmission time of the first symbol of the first PDCCH is earlier or later than the transmission time of the first symbol of the second PDCCH.
  • the method further includes:
  • the reference time and the corresponding transmission time interval of the PDSCH, PUSCH, CSI-RS or SRS are taken as the first time interval ( time offset);
  • the time interval between the reference time and the corresponding PDSCH or CSI-RS is taken as the second time offset, and the second time offset is the difference between the threshold and the threshold.
  • the size relationship is used to determine the Quasi Co-Location (QCL) relationship of PDSCH or CSI-RS;
  • the reference time is used as the reception time of the PDCCH on which the PDSCH or PUSCH is scheduled.
  • the last symbol of the reference PDCCH is used as the last symbol of the multiple PDCCHs.
  • the time starting point of the first time offset or the second time offset is equal to the receiving time of the reference PDCCH
  • the time starting point of the first time offset or the second time offset is equal to the sum or difference between the receiving time of the reference PDCCH and the transmission time interval of the multiple PDCCHs.
  • the transmission time intervals of the multiple PDCCHs are indicated explicitly or implicitly through RRC signaling;
  • the transmission time intervals of the plurality of PDCCHs are indicated by DCI.
  • a device for determining a reference PDCCH applied to a terminal, including:
  • a determination module configured to use one or more of the multiple PDCCHs as a reference PDCCH according to one or more of the reception time of the PDCCH, the ID of the Search Space corresponding to the PDCCH, and the ID of the CORESET corresponding to the PDCCH.
  • the determining module is further configured to: use the first PDCCH in the plurality of PDCCHs as a reference PDCCH;
  • the first PDCCH satisfies one or more of the following:
  • the ID of the Search Space corresponding to the first PDCCH is greater than or less than the ID of the Search Space corresponding to the second PDCCH;
  • the ID of the CORESET corresponding to the first PDCCH is larger or smaller than the ID of the CORESET corresponding to the second PDCCH;
  • the reception time of the first symbol of the first PDCCH is before or after the reception time of the first symbol of the second PDCCH;
  • the second PDCCH is other PDCCH except the second PDCCH among the plurality of PDCCHs.
  • the multiple PDCCHs are used to schedule one or more of the same PDSCH, PUSCH, CSI-RS and SRS.
  • the ID of the Search Space corresponding to the first PDCCH is larger or smaller than the ID of the Search Space corresponding to the second PDCCH, or, the ID of the CORESET corresponding to the first PDCCH is larger or smaller than the CORESET corresponding to the second PDCCH.
  • the transmission time of the first symbol of the first PDCCH is earlier or later than the transmission time of the first symbol of the second PDCCH.
  • the determining module is further configured to: use the reception time of the first symbol of the reference PDCCH as the reference time; or use the reception time of the first symbol of the second PDCCH with the multiple The sum or difference of the transmission time intervals of the PDCCH is used as the reference time;
  • the reference time and the corresponding transmission time interval of the PDSCH, PUSCH, CSI-RS or SRS are taken as the first time offset
  • the time interval between the reference time and the corresponding PDSCH or CSI-RS is taken as the second time offset, and the second time offset is the difference between the threshold and the threshold.
  • the size relationship is used to determine the QCL relationship of PDSCH or CSI-RS;
  • the reference time is used as the reception time of the PDCCH on which the PDSCH or PUSCH is scheduled.
  • the last symbol of the reference PDCCH is used as the last symbol of the multiple PDCCHs.
  • a terminal including: a processor, a memory, and a program stored on the memory and executable on the processor, the program being executed by the processor as described in the first aspect steps of the method described.
  • a readable storage medium is provided, and a program is stored on the readable storage medium, and when the program is executed by a processor, steps including the method of the first aspect are implemented.
  • the realization of determining the reference PDCCH can help define the time reference point, and the scheduling time of PDSCH/PUSCH/CSI-RS/SRS used in this scenario is determined, PDSCH/CSI- The QCL relationship of the RS is determined, the scheduling timing relationship of PDSCH/PUSCH under multiple HARQ processes is determined, and the case where the target PDCCH is not detected can be supported.
  • Fig. 1 is the schematic diagram of time slot offset
  • Fig. 3 is one of the schematic diagrams of out-of-order scheduling
  • Fig. 4 is the schematic diagram of the starting time reference point of time slot offset
  • 5 is a schematic diagram of a QCL relationship of PDSCH or CSI-RS
  • FIG. 6 is the second schematic diagram of out-of-order scheduling
  • FIG. 7 is a schematic diagram of a wireless communication system to which an embodiment of the present application can be applied
  • FIG. 8 is a flowchart of a method for determining a reference PDCCH provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of an apparatus for determining a reference PDCCH provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a terminal provided by an embodiment of the present application.
  • words such as “exemplary” or “for example” are used to represent examples, illustrations or illustrations. Any embodiments or designs described in the embodiments of the present application as “exemplary” or “such as” should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as “exemplary” or “such as” is intended to present the related concepts in a specific manner.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • system and “network” in the embodiments of the present application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies.
  • NR New Radio
  • NR terminology is used in most of the following description, although these techniques are also applicable to applications other than NR system applications, such as 6th generation ( 6th Generation, 6G) communication system.
  • the base station in a single-transmission point (Single-TRP, STRP) scenario, assuming that the physical downlink control channel (Physical Downlink Control Channel, PDCCH) receiving time is the first time (n), the base station will be the physical downlink corresponding to the PDCCH.
  • Shared Channel Physical Downlink Shared CHannel, PDSCH
  • PUSCH Physical Uplink Shared CHannel
  • CSI-RS Channel State Information Reference Signal
  • SRS Sounding Reference Signal
  • radio resource control Radio Resource Control
  • RRC Radio Resource Control
  • MAC-CE Medium Access Control-Control Element
  • DCI Downlink Control Information
  • RRC configures M transmission configuration indication (Transmission Configuration Indication, TCI) states
  • DCI format 1_1 indicates at most 8 states selected from the MAC CE, and the terminal (for example, user equipment (User Equipment, UE)) obtains the received PDSCH demodulation reference signal (Demodulation Reference) according to this TCI state.
  • Signal, DMRS DMRS QCL source signal and type.
  • DCI format 1_1 contains the TCI information field:
  • timeDurationForQCL If the time interval from the PDCCH reception time to the corresponding PDSCH transmission is greater than the threshold value (timeDurationForQCL), then obtain the QCL reference according to the TCI information field in the DCI;
  • DCI format 1_1 does not contain the TCI information field, or is scheduled with DCI format 1_0:
  • timeDurationForQCL the threshold value
  • the hybrid automatic repeat request process number (Hybrid Automatic Repeat reQuest, HARQ process number) is different: the PDSCH and PUSCH scheduled by the later DCI must be transmitted after the PDSCH and PUSCH scheduled by the first DCI;
  • the HARQ process number is the same: DCI scheduling PDSCH and PUSCH can only be sent after the previous PDSCH/PUSCH transmission.
  • the PUSCH scheduled by the later DCI is allowed to be transmitted before the PUSCH scheduled by the earlier DCI, but the two DCIs are required to belong to 2 different TRPs.
  • slot offset scheduling the same PDSCH/PUSCH/CSI-RS/SRS slot offset (Slot offset for scheduling the same PDSCH/PUSCH/CSI-RS/SRS)
  • Multi-TRP ultra-reliable low latency communication
  • URLLC ultra-reliable low latency communication
  • the time interval between the receiving time of the PDCCH and the receiving time of the PDSCH/CSI-RS is defined as time offset; in the Multi-TRP scenario, under a fixed threshold (timeDurationForQCL), if the PDCCH candidates sent by the two TRPs If the (candidate) time is different, the UE uses different PDCCH candidates as the reference point for calculating the time offset, and the determined QCL relationship may also be different.
  • timeDurationForQCL a fixed threshold
  • the UE may detect all or part of the PDCCH candidates, and then the out-of-order scheduling needs to be redefined.
  • the figure shows that only the first candidate is detected in the PDCCH corresponding to PDSCH1/PUSCH1; only the second candidate is detected in the PDCCH corresponding to PDSCH2/PUSCH2, so should this situation be regarded as out-of- order scheduling?
  • TRP1 and TRP2 respectively send PDCCHs to the UE, and the UE receives the PDCCHs sent by the two TRPs at different times.
  • the UE can use the reception time of the first PDCCH as a reference point and combine the slot offset to calculate the transmission time of PUSCH and SRS and the reception time of PDSCH and CSI-RS.
  • the reception time of the second PDCCH is also possible to use the reception time of the second PDCCH as a reference point and combine the slot offset to calculate the transmission time of PUSCH and SRS and the reception time of PDSCH and CSI-RS.
  • TRP1 sends the first PDCCH (PDCCH candidate2 in Figure 4) first, and then sends the second PDCCH (PDCCH candidate1 in Figure 4) after TRP2. In this way, the first PDCCH sent by TRP1
  • the receiving time should be used as a reference point, combined with the slot offset, to calculate the sending time of PUSCH and SRS and the receiving time of PDSCH and CSI-RS.
  • the base station cannot schedule PDSCH and PUSCH according to its own expected time. , CSI-RS, SRS.
  • TRP1 and TRP2 respectively send PDCCH (also referred to as PDCCH candidate) to the UE, and the UE receives the PDCCH sent by the two TRPs at different times.
  • PDCCH also referred to as PDCCH candidate
  • the UE can use the reception time of the first PDCCH as a reference point, combined with timeDurationForQCL, to determine the source of obtaining QCL information, or it can use the reception time of the second PDCCH as a reference point, combined with timeDurationForQCL, determine the acquisition of QCL
  • the source of the information however, the two determined sources are different, resulting in different contents of the acquired QCL information, and thus the UE cannot accurately use the QCL information to receive PDSCH and CSI-RS.
  • TRP1 first sends the first PDCCH (Second candidate2 in Figure 5), and then TRP2 sends the second PDCCH (First candidate1 in Figure 5), so that the first PDCCH sent by TRP1
  • the receiving time should be used as a reference point, combined with timeDurationForQCL, to determine the source of obtaining QCL information.
  • the UE uses the reception time of the second PDCCH as a reference point, combines timeDurationForQCL to determine the source of obtaining QCL information, and then uses the QCL information to receive PDSCH and CSI-RS, the PDSCH and CSI-RS scheduled by the base station will not be available to the UE. Accurately received.
  • TRP1 sends two PDCCHs to the UE successively (First candidate2 and First candidate1 in FIG. 6 ), and TRP2 successively sends two PDCCHs to the UE (Second in FIG. 6 ).
  • candidate2 and Second candidate1 First candidate1 and Second candidate1 jointly schedule PDSCH1 or PUSCH1, First candidate2 and Second candidate2 jointly schedule PDSCH2 or PUSCH2, UE only detects the first candidate sent by TRP1 and the second sent by TRP2 candidate2.
  • the PDSCH scheduled by the later DCI is allowed to precede the PDSCH scheduled by the earlier DCI transmission, or the PUSCH scheduled by the later DCI is transmitted before the PUSCH scheduled by the earlier DCI.
  • the first candidate2 is before the first candidate1
  • the next PDCCH (First candidate1) scheduling can only be sent after the PDSCH and PUSCH scheduled by the previous PDCCH (First candidate2) are transmitted.
  • PDSCH and PUSCH are inconsistent, which leads to scheduling problems, and the scheduled PDSCH and PUSCH cannot be accurately received by the UE.
  • multiple PDCCHs are detected; according to one or more of the reception time of the PDCCH, the ID of the Search Space corresponding to the PDCCH, and the ID of the CORESET corresponding to the PDCCH, from the multiple PDCCHs
  • One PDCCH is used as a reference PDCCH.
  • the reference PDCCH is selected based on the ID of the Search Space corresponding to the PDCCH, the ID of the CORESET corresponding to the PDCCH configured by the base station, and the time when the terminal itself receives the PDCCH, so as to ensure that the terminal and the base station side The schedule is processed at the same time.
  • the wireless communication system includes a terminal 71 and a network-side device 72 .
  • the terminal 71 may also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 71 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital computer Assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device (Vehicle User Equipment, VUE), pedestrian terminal (Pedestrian User Equipment, PUE) and other terminal-side devices, wearable devices include: bracelets, headphones, glasses, etc. It should be noted that, the embodiment of the present application does not limit the specific type of the terminal 71 .
  • the network side device 72 may be a base station or a core network, wherein the base station may be referred to as a Node B, an evolved Node B, an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a basic service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node, Send Transmitting Receiving Point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms.
  • the base station in the NR system is taken as an example, but the specific type of the base station is not limited.
  • an embodiment of the present application provides a method for determining a reference PDCCH, where the execution subject of the method may be a terminal, and the specific steps include: step 801 and step 802 .
  • Step 801 Detect multiple PDCCHs (or PDCCH candidates);
  • Step 802 According to one or more of the reception time of the PDCCH, the ID of the Search Space corresponding to the PDCCH, and the ID of the CORESET corresponding to the PDCCH, use one PDCCH among the plurality of PDCCHs as a reference PDCCH.
  • one PDCCH in the plurality of PDCCHs is As a reference to the steps of PDCCH, include:
  • the first PDCCH satisfies one or more of the following:
  • the ID of the Search Space corresponding to the first PDCCH is greater than or less than the ID of the Search Space corresponding to the second PDCCH;
  • the ID of the CORESET corresponding to the first PDCCH is larger or smaller than the ID of the CORESET corresponding to the second PDCCH;
  • reception time of the first symbol of the first PDCCH is before or after the reception time of the first symbol of the second PDCCH
  • the second PDCCH is other PDCCH except the second PDCCH among the plurality of PDCCHs.
  • the multiple PDCCHs are used to schedule one or more of the same PDSCH, PUSCH, CSI-RS and SRS.
  • the ID of the Search Space corresponding to the first PDCCH is larger or smaller than the ID of the Search Space corresponding to the second PDCCH, or the ID of the CORESET corresponding to the first PDCCH is larger or smaller than
  • the transmission time of the first symbol of the first PDCCH is earlier or later than the transmission time of the first symbol of the second PDCCH.
  • the method further includes:
  • the reference time and the corresponding transmission time interval of the PDSCH, PUSCH, CSI-RS or SRS are taken as the first time offset
  • the time interval between the reference time and the corresponding PDSCH or CSI-RS is taken as the second time offset, and the second time offset is the difference between the threshold and the threshold.
  • the size relationship is used to determine the QCL relationship of PDSCH or CSI-RS;
  • the reference time is used as the reception time of the PDCCH on which the PDSCH or PUSCH is scheduled.
  • the last symbol of the reference PDCCH is used as the last symbol of the multiple PDCCHs.
  • the time starting point of the first time offset or the second time offset is equal to the receiving time of the reference PDCCH
  • the time starting point of the first time offset or the second time offset is equal to the sum or difference between the receiving time of the reference PDCCH and the transmission time interval of the multiple PDCCHs.
  • the transmission time intervals of the multiple PDCCHs are indicated explicitly or implicitly through RRC signaling;
  • the transmission time intervals of the plurality of PDCCHs are indicated by DCI.
  • the realization of determining the reference PDCCH can help define the time reference point, and the scheduling time of PDSCH/PUSCH/CSI-RS/SRS used in this scenario is determined, PDSCH/CSI- The QCL relationship of the RS is determined, the scheduling timing relationship of PDSCH/PUSCH under multiple HARQ processes is determined, and the case where the target PDCCH is not detected can be supported.
  • Embodiment 1 When multiple PDCCHs schedule the same PDSCH, PUSCH, CSI-RS or SRS, the definition of slot offset needs to determine the following four rules:
  • the PDCCH candidate whose corresponding Search Space ID (or CORESET ID) is smaller or larger is sent first in the time domain on the corresponding TRP.
  • the UE uses the PDCCH candidate with the earlier (or later) reception time as the reference PDCCH candidate.
  • the UE can know the order of sending them according to the Search Space ID (or CORESET ID) of the two PDCCH candidates and Rule 1. Then the UE determines the reference PDCCH candidate in combination with Rule 2, and then determines the calculation start time of the slot offset.
  • the Search Space ID or CORESET ID
  • the UE can know that the PDCCH candidate is earlier or later in the time domain according to the Search Space ID (or CORESET ID) of the PDCCH candidate and Rule 1. .
  • the transmission time interval of the two candidates may be explicitly configured by RRC or implicitly determined according to the RRC configuration, or indicated by DCI.
  • Embodiment 2 When multiple PDCCHs schedule the same PDSCH/CSI-RS, the following four rules are determined for the QCL relationship of PDSCH/CSI-RS:
  • the PDCCH candidate whose corresponding Search Space ID (or CORESET ID) is smaller or larger is sent first in the time domain on the corresponding TRP.
  • the UE uses the PDCCH candidate whose reception time is later as the reference PDCCH candidate.
  • the UE can know the order of sending them according to the Search Space ID (or CORESET ID) of the two PDCCH candidates and Rule 1. Then, in combination with Rule 2, the UE takes the PDCCH candidate with a later reception time as the reference PDCCH candidate, and then uses the reception time of the reference PDCCH candidate as the calculation start time of the time offset.
  • the Search Space ID or CORESET ID
  • the UE can know that the PDCCH candidate is earlier or later in the time domain according to the Search Space ID (or CORESET ID) of the PDCCH candidate and Rule 1. .
  • the transmission time interval of the two PDCCH candidates may be explicitly configured by RRC or implicitly determined according to the RRC configuration, or indicated by DCI.
  • Embodiment 3 When multiple PDCCHs schedule the same PDSCH or PUSCH, the definition of out-of-order/in-order scheduling determines the following four rules:
  • the PDCCH candidate whose corresponding Search Space ID (or CORESET ID) is smaller or larger is sent first in the time domain on the corresponding TRP.
  • the UE uses the PDCCH candidate whose reception time is later as the reference PDCCH candidate.
  • the UE If the UE detects all 2 PDCCH candidates, the UE can know the order of sending them according to the Search Space ID (or CORESET ID) of the two PDCCH candidates and Rule 1. Then, in combination with Rule 2, the UE uses the PDCCH candidate with a later receiving time as the reference PDCCH candidate, and then uses the receiving time of the reference PDCCH candidate as the receiving time for scheduling the PDCCH corresponding to the PDSCH or PUSCH.
  • the Search Space ID or CORESET ID
  • the UE can know that the PDCCH candidate is earlier or later in the time domain according to the Search Space ID (or CORESET ID) of the PDCCH candidate and Rule 1. .
  • the reception time of the PDCCH the reception time of the PDCCH candidate.
  • the receiving time of the PDCCH the receiving time of the PDCCH candidate + the sending time interval of 2 PDCCH candidates
  • the transmission time interval of the two PDCCH candidates may be explicitly configured by RRC or implicitly determined according to the RRC configuration, or indicated by DCI.
  • the realization of determining the reference PDCCH can help define the time reference point, and the scheduling time of PDSCH/PUSCH/CSI-RS/SRS used in this scenario is determined, PDSCH/CSI- The QCL relationship of the RS is determined, the scheduling timing relationship of PDSCH/PUSCH under multiple HARQ processes is determined, and the case where the target PDCCH is not detected can be supported.
  • an embodiment of the present application provides an apparatus for determining a reference PDCCH, and the apparatus is applied to a terminal, including:
  • a detection module 901, configured to detect multiple PDCCHs
  • the determining module 902 is configured to use one or more of the multiple PDCCHs as a reference PDCCH according to one or more of the reception time of the PDCCH, the ID of the Search Space corresponding to the PDCCH, and the ID of the CORESET corresponding to the PDCCH.
  • the determining module 902 is further configured to: use the first PDCCH in the plurality of PDCCHs as a reference PDCCH;
  • the first PDCCH satisfies one or more of the following:
  • the ID of the Search Space corresponding to the first PDCCH is greater than or less than the ID of the Search Space corresponding to the second PDCCH;
  • the ID of the CORESET corresponding to the first PDCCH is larger or smaller than the ID of the CORESET corresponding to the second PDCCH;
  • reception time of the first symbol of the first PDCCH is before or after the reception time of the first symbol of the second PDCCH
  • the second PDCCH is other PDCCH except the second PDCCH among the plurality of PDCCHs.
  • the multiple PDCCHs are used to schedule one or more of the same PDSCH, PUSCH, CSI-RS and SRS.
  • the ID of the Search Space corresponding to the first PDCCH is larger or smaller than the ID of the Search Space corresponding to the second PDCCH, or the ID of the CORESET corresponding to the first PDCCH is larger or smaller than
  • the transmission time of the first symbol of the first PDCCH is earlier or later than the transmission time of the first symbol of the second PDCCH.
  • the determining module 902 is further configured to: use the reception time of the first symbol of the reference PDCCH as the reference time; or, use the reception time of the first symbol of the second PDCCH as the reference time The sum or difference with the transmission time intervals of the multiple PDCCHs is used as a reference time;
  • the reference time and the corresponding transmission time interval of the PDSCH, PUSCH, CSI-RS or SRS are taken as the first time offset
  • the time interval between the reference time and the corresponding PDSCH or CSI-RS is taken as the second time offset, and the second time offset is the difference between the threshold and the threshold.
  • the size relationship is used to determine the QCL relationship of PDSCH or CSI-RS;
  • the reference time is used as the reception time of the PDCCH on which the PDSCH or PUSCH is scheduled.
  • the last symbol of the reference PDCCH is used as the last symbol of the multiple PDCCHs.
  • the time starting point of the first time offset or the second time offset is equal to the receiving time of the reference PDCCH
  • the time starting point of the first time offset or the second time offset is equal to the sum or difference between the receiving time of the reference PDCCH and the transmission time interval of the multiple PDCCHs.
  • the transmission time intervals of the multiple PDCCHs are indicated explicitly or implicitly through RRC signaling;
  • the transmission time intervals of the plurality of PDCCHs are indicated by DCI.
  • the apparatus provided in this embodiment of the present application can implement each process implemented by the method embodiment shown in FIG. 8 , and achieve the same technical effect. To avoid repetition, details are not described here.
  • the terminal 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user Input unit 1007, interface unit 1008, memory 1009, processor 1010 and other components.
  • the terminal 1000 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 1010 through a power management system, so as to manage charging, discharging, and power consumption through the power management system management and other functions.
  • a power source such as a battery
  • the terminal structure shown in FIG. 10 does not constitute a limitation on the terminal, and the terminal may include more or less components than shown, or combine some components, or arrange different components, which will not be repeated here.
  • the input unit 1004 may include a graphics processor (Graphics Processing Unit, GPU) 10041 and a microphone 10042. Such as camera) to obtain still pictures or video image data for processing.
  • the display unit 1006 may include a display panel 10061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 1007 includes a touch panel 10071 and other input devices 10072 .
  • the touch panel 10071 is also called a touch screen.
  • the touch panel 10071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be repeated here.
  • the radio frequency unit 1001 receives the downlink data from the network side device, and then processes it to the processor 1010; in addition, sends the uplink data to the network side device.
  • the radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • Memory 1009 may be used to store software programs or instructions as well as various data.
  • the memory 1009 may mainly include a stored program or instruction area and a storage data area, wherein the stored program or instruction area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.) and the like.
  • the memory 1009 may include a high-speed random access memory, and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • PROM erasable programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory for example at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
  • the processor 1010 may include one or more processing units; optionally, the processor 1010 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs or instructions, etc. Modem processors mainly deal with wireless communications, such as baseband processors. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 1010.
  • the terminal provided in this embodiment of the present application can implement each process implemented by the method embodiment shown in FIG. 8 , and achieve the same technical effect. To avoid repetition, details are not described here.
  • Embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, each process of the method embodiment shown in FIG. To achieve the same technical effect, in order to avoid repetition, details are not repeated here.
  • the processor is the processor in the terminal described in the foregoing embodiment.
  • the readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
  • the steps of the method or algorithm described in conjunction with the disclosure of the present application may be implemented in a hardware manner, or may be implemented in a manner of executing software instructions on a processor.
  • the software instructions may be composed of corresponding software modules, and the software modules may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, removable hard disk, CD-ROM, or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and storage medium may be carried in an ASIC.
  • the ASIC may be carried in the core network interface device.
  • the processor and the storage medium may also exist in the core network interface device as discrete components.
  • the functions described in this application may be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.
  • embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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Abstract

本申请实施例提供一种参考物理下行控制信道(PDCCH)的确定方法、装置、设备及可读存储介质，该方法包括：检测多个PDCCH；根据PDCCH的接收时间、PDCCH对应的搜索空间(Search Space)的标识(ID)、PDCCH对应的控制资源集合(CORESET)的ID中的一项或多项，将所述多个PDCCH中某一个PDCCH作为参考PDCCH。

Description

参考PDCCH的确定方法、装置、设备及可读存储介质
相关申请的交叉引用
本申请基于申请号为202110494531.0、申请日为2021年05月07日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此以全文引入的方式引入本申请。
技术领域
本申请实施例涉及通信技术领域，具体涉及一种参考物理下行控制信道(Physical Downlink Control Channel，PDCCH)的确定方法、装置、设备及可读存储介质。
背景技术
对于多发送接收点(Multiple Transmitting Receiving Point，Multi-TRP)超可靠低时延传输(Ultra-reliable low latency communication，URLLC)场景，若两个TRP各自向同一用户发送PDCCH，其承载的下行控制信息(Downlink Control Information，DCI)相同，所指示的时隙偏移(slot offset)也相同，但是终端接收这两个PDCCH的时刻不同，那么UE如何确定参考PDCCH是亟待解决的问题。
发明内容
本申请实施例在于提供一种参考PDCCH的确定方法、装置、设备及可读存储介质，解决如何确定参考PDCCH的问题。
第一方面，提供一种参考PDCCH的确定方法，应用于终端，包括：
检测多个PDCCH；
根据PDCCH的接收时间、PDCCH candidate对应的搜索空间(Search Space)的标识(ID)、PDCCH对应的控制资源集合(CORESET)的ID中的一项或多项，将所述多个PDCCH中的一个PDCCH作为参考PDCCH。
可选地，所述根据PDCCH的接收时间、PDCCH对应的Search Space的ID、PDCCH对应的CORESET的ID中的一项或多项，将所述多个PDCCH中的一个PDCCH作为参考PDCCH，包括：
将所述多个PDCCH中的第一PDCCH作为参考PDCCH；
其中，所述第一PDCCH满足以下一项或多项：
所述第一PDCCH对应的Search Space的ID大于或小于第二PDCCH对应的Search Space的ID；
所述第一PDCCH对应的CORESET的ID大于或小于第二PDCCH对应的CORESET的ID；
所述第一PDCCH的第一个符号的接收时间在第二PDCCH的第一个符号的接收时间之前或之后；
其中，所述第二PDCCH是所述多个PDCCH中除所述第二PDCCH之外的其他PDCCH。
可选地，所述多个PDCCH用于调度相同的物理下行共享信道(Physical Downlink Shared CHannel，PDSCH)、物理上行共享信道(Physical Uplink Shared CHannel，PUSCH)、信道状态信息参考信号(Channel State Information Reference Signal，CSI-RS)和探测参考信号(Sounding Reference Signal，SRS)中的一项或多项。
可选地，在所述第一PDCCH对应的Search Space的ID大于或小于第二PDCCH对应的Search Space的ID，或者，所述第一PDCCH对应的CORESET的ID大于或小于第二PDCCH对应的CORESET的ID的情况下，所述第一PDCCH的第一个符号的发送时间早于或晚于所述第二PDCCH的第一个符号的发送时间。
可选地，所述方法还包括：
将所述参考PDCCH的第一个符号的接收时间作为参考时间；
或者，
将所述第二PDCCH的第一个符号的接收时间与所述多个PDCCH的发送时间间隔之和或之差作为参考时间；
其中，在多个PDCCH调度相同的PDSCH、PUSCH、CSI-RS或SRS的情况下，所述参考时间与对应的所述PDSCH、PUSCH、CSI-RS或SRS的发送时间间隔作为第一时间间隔(time offset)；
或者，在多个PDCCH调度相同的PDSCH或CSI-RS的情况下，所述参考时间与对应的所述PDSCH或CSI-RS的时间间隔作为第二time offset，所述第二time offset与门限的大小关系用于确定PDSCH或CSI-RS的准共址(Quasi Co-Location，QCL)关系；
或者，在多个PDCCH调度相同的PDSCH或PUSCH的情况下，所述参考时间作为调度所述PDSCH或PUSCH的PDCCH的接收时间。
可选地，在多个PDCCH调度相同的PDSCH或PUSCH的情况下，所述参考PDCCH的最后1个符号作为所述多个PDCCH的最后1个符号。
可选地，所述第一time offset或者第二time offset的时间起始点等于所述参考PDCCH的接收时间；
或者，
所述第一time offset或者第二time offset的时间起始点等于所述参考PDCCH的接收时间与所述多个PDCCH的发送时间间隔之和或之差。
可选地，所述多个PDCCH的发送时间间隔是通过RRC信令显式或隐式指示的；
或者，
所述多个PDCCH的发送时间间隔是通过DCI指示的。
第二方面，提供一种参考PDCCH的确定装置，应用于终端，包括：
检测模块，用于检测多个PDCCH；
确定模块，用于根据PDCCH的接收时间、PDCCH对应的Search Space的ID、PDCCH对应的CORESET的ID中的一项或多项，将所述多个PDCCH中的一个PDCCH作为参考PDCCH。
可选地，所述确定模块进一步用于：将所述多个PDCCH中的第一PDCCH作为参考PDCCH；
其中，所述第一PDCCH满足以下一项或多项：
所述第一PDCCH对应的Search Space的ID大于或小于第二PDCCH对应的Search Space的ID；
所述第一PDCCH对应的CORESET的ID大于或小于第二PDCCH对应的CORESET的ID；
所述第一PDCCH的第一个符号的接收时间在第二PDCCH的第一个符号的接收时间之前或之后；
其中，所述第二PDCCH是所述多个PDCCH中除所述第二PDCCH之外的其他PDCCH。
可选地，所述多个PDCCH用于调度相同的PDSCH、PUSCH、CSI-RS和SRS中的一项或多项。
可选地，在所述第一PDCCH对应的Search Space的ID大于或小于第二PDCCH对应的Search Space的ID，或者，所述第一PDCCH对应的CORESET的ID大于或小于第二PDCCH对应的CORESET的ID的情况下，所述第一PDCCH的第一个符号的发送时间早于或晚于所述第二PDCCH的第一个符号的发送时间。
可选地，所述确定模块还用于：将所述参考PDCCH的第一个符号的接收时间作为参考时间；或者，将所述第二PDCCH的第一个符号的接收时间与所述多个PDCCH的发送时间间隔之和或之差作为参考时间；
其中，在多个PDCCH调度相同的PDSCH、PUSCH、CSI-RS或SRS的情况下，所述参考时间与对应的所述PDSCH、PUSCH、CSI-RS或SRS的发送时间间隔作为第一time offset；
或者，在多个PDCCH调度相同的PDSCH或CSI-RS的情况下，所述参考时间与对应的所述PDSCH或CSI-RS的时间间隔作为第二time offset，所述第二time offset与门限的大小关系用于确定PDSCH或CSI-RS的QCL关系；
或者，在多个PDCCH调度相同的PDSCH或PUSCH的情况下，所述参考时间作为调度所述PDSCH或PUSCH的PDCCH的接收时间。
可选地，在多个PDCCH调度相同的PDSCH或PUSCH的情况下，所述参考PDCCH的最后1个符号作为所述多个PDCCH的最后1个符号。
第三方面，提供一种终端，包括：处理器、存储器及存储在所述存储 器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现如第一方面所述方法的步骤。
第四方面，提供一种可读存储介质，所述可读存储介质上存储有程序，所述程序被处理器执行时实现包括如第一方面所述的方法的步骤。
在本申请实施例中，针对Multi-TRP PDCCH repetition场景，实现确定参考PDCCH，可以帮助定义时间参考点，用于此场景的PDSCH/PUSCH/CSI-RS/SRS的调度时间确定、PDSCH/CSI-RS的QCL关系确定、多HARQ进程下PDSCH/PUSCH的调度时序关系确定，并且可以支持在目标PDCCH未被检测到的情况。
附图说明
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本申请的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1是时隙偏移的示意图；
图2a和图2b是有序调度的示意图；
图3是无序调度的示意图之一；
图4是时隙偏移的起始时刻参考点的示意图；
图5是PDSCH或CSI-RS的QCL关系的示意图；
图6是无序调度的示意图之二；
图7是本申请实施例可应用的一种无线通信系统的示意图
图8是本申请实施例提供的参考PDCCH的确定方法的流程图；
图9是本申请实施例提供的参考PDCCH的确定装置的示意图；
图10是本申请实施例提供的终端的示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而 不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“包括”以及它的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，说明书以及权利要求中使用“和/或”表示所连接对象的至少其中之一，例如A和/或B，表示包含单独A，单独B，以及A和B都存在三种情况。
在本申请实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。然而，以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，尽管这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
为了便于理解本申请的实施例，下面先介绍以下技术点：
一、关于时隙(Slot)偏移(offset)的介绍：
相关技术中，在单传输点(Single-TRP，STRP)场景中，假设物理下行控制信道(Physical Downlink Control Channel，PDCCH)接收时刻为第一 时刻(n)，基站会为PDCCH所对应的物理下行共享信道(Physical Downlink Shared CHannel，PDSCH)/物理上行共享信道(Physical Uplink Shared CHannel，PUSCH)/信道状态信息参考信号(Channel State Information Reference Signal，CSI-RS)/探测参考信号(Sounding Reference Signal，SRS)配置时隙偏移(slot offset)，那么相应的PDSCH、PUSCH、CSI-RS、SRS的发送时刻应为第二时刻(n+slot offset)，参见图1。
二、准共址(Quasi Co-Location，QCL)参考获取：
相关技术中，QCL参考的获得需要经过无线资源控制(Radio Resource Control，RRC)配置、媒体接入控制-控制单元(Medium Access Control-Control Element，MAC-CE)激活以及下行控制信息(Downlink Control Information，DCI)指示3个步骤：
1)RRC配置M个传输配置指示(Transmission Configuration Indication，TCI)状态；
2)MAC CE从M中最多选出8个TCI状态；
3)DCI格式1_1(DCI format 1_1)从MAC CE选出的最多8个状态进行指示，终端(例如，用户设备(User Equipment，UE))根据此TCI状态得到接收PDSCH解调参考信号(Demodulation Reference Signal，DMRS)的QCL源信号和类型。
如果DCI format 1_1包含TCI信息域：
i.如果PDCCH接收时刻到对应的PDSCH传输的时间间隔大于门限值(timeDurationForQCL)，那么根据DCI中的TCI信息域获取QCL参考；
ii.反之，与最近的包含控制资源集(Control-Resource Set，CORESET)的slot中标识(Identity，ID)最低的CORESET保持相同的QCL。
如果DCI format 1_1不包含TCI信息域，或者用DCI format 1_0调度：
i.如果PDCCH接收时刻到对应的PDSCH传输的时间间隔大于门限值(timeDurationForQCL)，那么根据调度该PDSCH的PDCCH的TCI状态获取QCL参考；
ii.反之，与最近的包含CORESET的slot中ID最低的CORESET保持相同的QCL。
三、PDCCH到PDSCH(PDCCH-to-PDSCH)和PDCCH到PUSCH(PDCCH-to-PUSCH)的无序(Out-of-order)/有序(in-order)调度。
(1)in-order调度：
参见图2a和图2b，混合自动重传请求进程号(Hybrid Automatic Repeat reQuest，HARQ process number)不同：后发的DCI调度的PDSCH、PUSCH必须在先发的DCI调度的PDSCH、PUSCH之后传输；
HARQ process number相同：前一个PDSCH/PUSCH传输之后才能再发DCI调度PDSCH、PUSCH。
(2)out-of-order调度：
参见图3，允许后发的DCI调度的PUSCH在先发的DCI调度的PUSCH之前传输，但要求这两个DCI属于2个不同的TRP。
一、slot offset的定义问题：调度相同PDSCH/PUSCH/CSI-RS/SRS的时隙偏移(Slot offset for scheduling the same PDSCH/PUSCH/CSI-RS/SRS)
参见图4，对于多TRP(Multi-TRP)超可靠低时延传输(Ultra-reliable low latency communication，URLLC)场景，若两个TRP各自向同一用户发送PDCCH，其承载的DCI相同，所指示的slot offset也相同，但是UE接收这两个PDCCH candidate的时刻不同，那么UE应该以哪个时刻作为slot offset的起始时间参考点呢？
二、PDSCH/CSI-RS的QCL关系确定问题
参见图5，PDCCH的接收时刻与PDSCH/CSI-RS的接收时间间隔定义为time offset；而在Multi-TRP场景，在固定的门限值(timeDurationForQCL)下，若两个TRP所发送的PDCCH候选(candidate)时刻不同，那么UE以不同的PDCCH candidate作为time offset的计算参考点，所确定的QCL关系也可能不同。
三、out-of-order/in-order调度的定义问题
参见图6，当1个PDCCH包含多个PDCCH candidate，并调度相同的PDSCH/PUSCH时，UE可能检测出全部或部分PDCCH candidate，那么就需要重新定义out-of-order调度。图示为PDSCH1/PUSCH1所对应的PDCCH中只有第一个candidate被检测出；PDSCH2/PUSCH2所对应的PDCCH中 只有第二个candidate被检测出，那么这种情况是否应该被看作out-of-order调度？
综上所述，相关技术中，以两个TRP为例，在图4中，TRP1和TRP2分别向UE发送PDCCH，UE接收这两个TRP发送的PDCCH的时刻不同。从UE角度来看，UE可以以第一个PDCCH的接收时刻作为参考点，结合slot offset，计算PUSCH、SRS的发送时刻以及PDSCH、CSI-RS的接收时刻。也可以以第二个PDCCH的接收时刻作为参考点，结合slot offset，计算PUSCH、SRS的发送时刻以及PDSCH、CSI-RS的接收时刻，但是，这两种方式，计算的两个发送时刻或两个接收时刻是不同的，导致UE无法准确发送PUSCH、SRS或者UE无法准确接收PDSCH、CSI-RS。另外，从基站角度来看，TRP1先发送第一个PDCCH(图4中的PDCCH candidate2)，TRP2后发送第二个PDCCH(图4中的PDCCH candidate1)，如此，TRP1发送的第一个PDCCH的接收时刻应该作为参考点，再结合slot offset，计算PUSCH、SRS的发送时刻以及PDSCH、CSI-RS的接收时刻。但是，若UE以第二PDCCH的接收时刻作为参考点，结合slot offset，计算PUSCH、SRS的发送时刻以及PDSCH、CSI-RS的接收时刻，就会导致基站无法按照自身预想的时刻调度PDSCH、PUSCH、CSI-RS、SRS。
相关技术中，以两个TRP为例，在图5中，TRP1和TRP2分别向UE发送PDCCH(也称为PDCCH candidate)，UE接收这两个TRP发送的PDCCH的时刻不同。从UE角度来看，UE可以以第一个PDCCH的接收时刻作为参考点，结合timeDurationForQCL，确定获取QCL信息的来源，也可以以第二个PDCCH的接收时刻作为参考点，结合timeDurationForQCL，确定获取QCL信息的来源，但是，确定的两个来源是不同的，导致获取的QCL信息的内容是不同的，进而导致UE无法准确利用QCL信息接收PDSCH、CSI-RS。另外，从基站角度来看，TRP1先发送第一个PDCCH(图5中的Second candidate2)，TRP2后发送第二个PDCCH(图5中的First candidate1)，如此，TRP1发送的第一个PDCCH的接收时刻应该作为参考点，再结合timeDurationForQCL，确定获取QCL信息的来源。但是，若UE以第二PDCCH的接收时刻作为参考点，结合timeDurationForQCL，确 定获取QCL信息的来源，再利用QCL信息接收PDSCH、CSI-RS，就会导致基站调度的PDSCH、CSI-RS无法被UE准确接收。
相关技术中，以两个TRP为例，在图6中，TRP1向UE先后发送两个PDCCH(图6中的First candidate2和First candidate1)，TRP2向UE先后发送两个PDCCH(图6中的Second candidate2和Second candidate1)，First candidate1和Second candidate1共同调度了PDSCH1或PUSCH1，First candidate2和Second candidate2共同调度了PDSCH2或PUSCH2，UE只检测出TRP1发送的后发的First candidate1和TRP2发送的先发的Second candidate2。从UE角度来看，可以认为是out of order调度，即，仅当两个DCI从两个不同的TRP独立发送的情况下，允许后发的DCI调度的PDSCH在先发的DCI调度的PDSCH之前传输，或者后发的DCI调度的PUSCH在先发的DCI调度的PUSCH之前传输。但是，从基站角度来看，可以认为是in-order调度，即，First candidate2在First candidate1之前，前一个PDCCH(First candidate2)调度的PDSCH、PUSCH传输之后才能再发后一个PDCCH(First candidate1)调度的PDSCH、PUSCH。导致UE和基站两侧预想的调度情况不一致，进而导致调度出现问题，调度的PDSCH、PUSCH不能被UE准确接收。
基于此，本申请实施例中，检测多个PDCCH；根据PDCCH的接收时间、PDCCH对应的Search Space的ID、PDCCH对应的CORESET的ID中的一项或多项，从所述多个PDCCH中的一个PDCCH作为参考PDCCH。
需要说明的是，本申请实施例中，结合基站配置的与PDCCH对应的Search Space的ID、与PDCCH对应的CORESET的ID，以及终端自身接收PDCCH的时间，选择参考PDCCH，从而保证终端和基站侧按照相同的时刻处理调度。
参见图7，示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端71和网络侧设备72。其中，终端71也可以称作终端设备或者用户终端(User Equipment，UE)，终端71可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记 本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、可穿戴式设备(Wearable Device)或车载设备(Vehicle User Equipment，VUE)、行人终端(Pedestrian User Equipment，PUE)等终端侧设备，可穿戴式设备包括：手环、耳机、眼镜等。需要说明的是，在本申请实施例并不限定终端71的具体类型。
网络侧设备72可以是基站或核心网，其中，基站可被称为节点B、演进节点B、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、B节点、演进型B节点(eNB)、家用B节点、家用演进型B节点、WLAN接入点、WiFi节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例，但是并不限定基站的具体类型。
参见图8，本申请实施例提供一种参考PDCCH的确定方法，该方法的执行主体可以为终端，具体步骤包括：步骤801和步骤802。
步骤801：检测多个PDCCH(或者称为PDCCH candidate)；
步骤802：根据PDCCH的接收时间、PDCCH对应的Search Space的ID、PDCCH对应的CORESET的ID中的一项或多项，将所述多个PDCCH中的一个PDCCH作为参考PDCCH。
在本申请的一种实施方式中，所述根据PDCCH的接收时间、PDCCH对应的Search Space的ID、PDCCH对应的CORESET的ID中的一项或多项，将所述多个PDCCH中的一个PDCCH作为参考PDCCH的步骤，包括：
将所述多个PDCCH中的第一PDCCH作为参考PDCCH；
其中，所述第一PDCCH满足以下一项或多项：
(1)所述第一PDCCH对应的Search Space的ID大于或小于第二PDCCH对应的Search Space的ID；
(2)所述第一PDCCH对应的CORESET的ID大于或小于第二PDCCH对应的CORESET的ID；
(3)所述第一PDCCH的第一个符号的接收时间在第二PDCCH的第一个符号的接收时间之前或之后；
其中，所述第二PDCCH是所述多个PDCCH中除所述第二PDCCH之外的其他PDCCH。
在本申请的一种实施方式中，所述多个PDCCH用于调度相同的PDSCH、PUSCH、CSI-RS和SRS中的一项或多项。
在本申请的一种实施方式中，在所述第一PDCCH对应的Search Space的ID大于或小于第二PDCCH对应的Search Space的ID，或者，所述第一PDCCH对应的CORESET的ID大于或小于第二PDCCH对应的CORESET的ID的情况下，所述第一PDCCH的第一个符号的发送时间早于或晚于所述第二PDCCH的第一个符号的的发送时间。
在本申请的一种实施方式中，所述方法还包括：
将所述参考PDCCH第一个符号的接收时间作为参考时间；或者，将所述第二PDCCH的第一个符号的接收时间与所述多个PDCCH的发送时间间隔之和或之差作为参考时间；
其中，在多个PDCCH调度相同的PDSCH、PUSCH、CSI-RS或SRS的情况下，所述参考时间与对应的所述PDSCH、PUSCH、CSI-RS或SRS的发送时间间隔作为第一time offset；
或者，在多个PDCCH调度相同的PDSCH或CSI-RS的情况下，所述参考时间与对应的所述PDSCH或CSI-RS的时间间隔作为第二time offset，所述第二time offset与门限的大小关系用于确定PDSCH或CSI-RS的QCL关系；
或者，在多个PDCCH调度相同的PDSCH或PUSCH的情况下，所述参考时间作为调度所述PDSCH或PUSCH的PDCCH的接收时间。
在本申请的一种实施方式中，在多个PDCCH调度相同的PDSCH或PUSCH的情况下，所述参考PDCCH的最后1个符号作为所述多个PDCCH的最后1个符号。
在本申请的一种实施方式中，所述第一time offset或者第二time offset的时间起始点等于所述参考PDCCH的接收时间；
或者，
所述第一time offset或者第二time offset的时间起始点等于所述参考PDCCH的接收时间与所述多个PDCCH的发送时间间隔之和或之差。
在本申请的一种实施方式中，所述多个PDCCH的发送时间间隔是通过RRC信令显式或隐式指示的；
或者，
所述多个PDCCH的发送时间间隔是通过DCI指示的。
在本申请实施例中，针对Multi-TRP PDCCH repetition场景，实现确定参考PDCCH，可以帮助定义时间参考点，用于此场景的PDSCH/PUSCH/CSI-RS/SRS的调度时间确定、PDSCH/CSI-RS的QCL关系确定、多HARQ进程下PDSCH/PUSCH的调度时序关系确定，并且可以支持在目标PDCCH未被检测到的情况。
实施例一：多个PDCCH调度同一个PDSCH、PUSCH、CSI-RS或SRS的情况下，slot offset的定义，需确定以下4个规则：
(1)规则1：
保证所关联的2个PDCCH candidate中，其对应的Search Space ID(或CORESET ID)较小或较大的PDCCH candidate在对应的TRP上在时域上先发送。
(2)规则2：
UE以接收时刻靠前(或靠后)的PDCCH candidate作为参考PDCCH candidate。
(3)规则3：
i.如果UE检测到全部2个PDCCH candidate，那么UE可根据这两个PDCCH candidate的Search Space ID(或CORESET ID)以及规则1，获知其发送的先后顺序。然后UE结合规则2，确定参考PDCCH candidate，进而确定slot offset的计算起始时刻。
ii.如果UE只检测到2个PDCCH candidate中的某一个PDCCH candidate，那么UE可根据此PDCCH candidate的Search Space ID(或CORESET ID)以及规则1，获知此PDCCH candidate在时域靠前或靠后。
a)若此PDCCH candidate在时域靠前，且规则2定义以时域靠前的PDCCH candidate作为参考PDCCH candidate，那么slot offset的计算起始时刻＝此PDCCH candidate的接收时刻；
b)若此PDCCH candidate在时域靠后，且规则2定义以时域靠后的PDCCH candidate作为参考PDCCH candidate，那么slot offset的计算起始时刻＝此PDCCH candidate的接收时刻；
c)若此candidate在时域靠前，且规则2定义以时域靠后的PDCCH candidate作为参考PDCCH candidate，那么slot offset的计算起始时刻＝此PDCCH candidate的接收时刻+2个PDCCH candidate的发送时间间隔；
d)若此PDCCH candidate在时域靠后，且规则2定义以时域靠前的PDCCH candidate作为参考PDCCH candidate，那么slot offset的计算起始时刻＝此PDCCH candidate的接收时刻－2个PDCCH candidate的发送时间间隔；
(4)规则4：
2个candidate的发送时间间隔可由RRC显式配置或根据RRC配置来隐式确定或者通过DCI指示。
实施例二：多个PDCCH调度同一个PDSCH/CSI-RS的情况下，PDSCH/CSI-RS的QCL关系，确定以下4个规则：
(1)规则1：
保证所关联的2个PDCCH candidate中，其对应的Search Space ID(或CORESET ID)较小或较大的PDCCH candidate在对应的TRP上在时域上先发送。
(2)规则2：
UE以接收时刻靠后的PDCCH candidate作为参考PDCCH candidate。
(3)规则3：
i.如果UE检测到全部2个PDCCH candidate，那么UE可根据这两个PDCCH candidate的Search Space ID(或CORESET ID)以及规则1，获知其发送的先后顺序。然后UE结合规则2，将接收时刻靠后的PDCCH candidate作为参考PDCCH candidate，进而将参考PDCCH candidate的接收时刻作为time offset的计算起始时刻。
ii.如果UE只检测到2个PDCCH candidate中的某一个PDCCH candidate，那么UE可根据此PDCCH candidate的Search Space ID(或CORESET ID)以及规则1，获知此PDCCH candidate在时域靠前或靠后。
a)若此PDCCH candidate在时域靠后，那么time offset的计算起始时刻＝此PDCCH candidate的接收时刻。
b)若此PDCCH candidate在时域靠前，那么time offset的计算起始时刻＝此PDCCH candidate的接收时刻+2个PDCCH candidate的发送时间间隔。
(4)规则4：
2个PDCCH candidate的发送时间间隔可由RRC显式配置或根据RRC配置来隐式确定或者通过DCI指示。
实施例三：多个PDCCH调度同一个PDSCH或PUSCH的情况下，out-of-order/in-order调度的定义，确定以下4个规则：
(1)规则1：
保证所关联的2个PDCCH candidate中，其对应的Search Space ID(或CORESET ID)较小或较大的PDCCH candidate在对应的TRP上在时域上先发送。
(2)规则2：
UE以接收时刻靠后的PDCCH candidate作为参考PDCCH candidate。
(3)规则3：
i.如果UE检测到全部2个PDCCH candidate，那么UE可根据这两个PDCCH candidate的Search Space ID(或CORESET ID)以及规则1，获知其发送的先后顺序。然后UE结合规则2，将接收时刻靠后的PDCCH candidate作为参考PDCCH candidate，进而将参考PDCCH candidate的接收时刻作为调度对应PDSCH或PUSCH的PDCCH的接收时刻。
ii.如果UE只检测到2个PDCCH candidate中的某一个PDCCH candidate，那么UE可根据此PDCCH candidate的Search Space ID(或CORESET ID)以及规则1，获知此PDCCH candidate在时域靠前或靠后。
a)若此PDCCH candidate在时域靠后，那么PDCCH的接收时刻＝此PDCCH candidate的接收时刻。
b)若此PDCCH candidate在时域靠前，那么PDCCH的接收时刻＝此PDCCH candidate的接收时刻+2个PDCCH candidate的发送时间间隔
(4)规则4：
2个PDCCH candidate的发送时间间隔可由RRC显式配置或根据RRC配置来隐式确定或者通过DCI指示。
在本申请实施例中，针对Multi-TRP PDCCH repetition场景，实现确定参考PDCCH，可以帮助定义时间参考点，用于此场景的PDSCH/PUSCH/CSI-RS/SRS的调度时间确定、PDSCH/CSI-RS的QCL关系确定、多HARQ进程下PDSCH/PUSCH的调度时序关系确定，并且可以支持在目标PDCCH未被检测到的情况。
参见图9，本申请实施例提供一种参考PDCCH的确定装置，该装置应用于终端，包括：
检测模块901，用于检测多个PDCCH；
确定模块902，用于根据PDCCH的接收时间、PDCCH对应的Search Space的ID、PDCCH对应的CORESET的ID中的一项或多项，将所述多个PDCCH中的一个PDCCH作为参考PDCCH。
在本申请的一种实施方式中，所述确定模块902进一步用于：将所述多个PDCCH中的第一PDCCH作为参考PDCCH；
其中，所述第一PDCCH满足以下一项或多项：
(1)所述第一PDCCH对应的Search Space的ID大于或小于第二PDCCH对应的Search Space的ID；
(2)所述第一PDCCH对应的CORESET的ID大于或小于第二PDCCH对应的CORESET的ID；
(3)所述第一PDCCH的第一个符号的接收时间在第二PDCCH的第一个符号的接收时间之前或之后；
其中，所述第二PDCCH是所述多个PDCCH中除所述第二PDCCH之外的其他PDCCH。
在本申请的一种实施方式中，所述多个PDCCH用于调度相同的PDSCH、PUSCH、CSI-RS和SRS中的一项或多项。
在本申请的一种实施方式中，在所述第一PDCCH对应的Search Space的ID大于或小于第二PDCCH对应的Search Space的ID，或者，所述第一PDCCH对应的CORESET的ID大于或小于第二PDCCH对应的CORESET的ID的情况下，所述第一PDCCH的第一个符号的发送时间早于或晚于所述第二PDCCH的第一个符号的发送时间。
在本申请的一种实施方式中，确定模块902还用于：将所述参考PDCCH的第一个符号的接收时间作为参考时间；或者，将所述第二PDCCH的第一个符号的接收时间与所述多个PDCCH的发送时间间隔之和或之差作为参考时间；
其中，在多个PDCCH调度相同的PDSCH、PUSCH、CSI-RS或SRS的情况下，所述参考时间与对应的所述PDSCH、PUSCH、CSI-RS或SRS的发送时间间隔作为第一time offset；
或者，在多个PDCCH调度相同的PDSCH或CSI-RS的情况下，所述参考时间与对应的所述PDSCH或CSI-RS的时间间隔作为第二time offset，所述第二time offset与门限的大小关系用于确定PDSCH或CSI-RS的QCL关系；
或者，在多个PDCCH调度相同的PDSCH或PUSCH的情况下，所述参考时间作为调度所述PDSCH或PUSCH的PDCCH的接收时间。
在本申请的一种实施方式中，在多个PDCCH调度相同的PDSCH或PUSCH的情况下，所述参考PDCCH的最后1个符号作为所述多个PDCCH的最后1个符号。
在本申请的一种实施方式中，所述第一time offset或者第二time offset的时间起始点等于所述参考PDCCH的接收时间；
或者，
所述第一time offset或者第二time offset的时间起始点等于所述参考PDCCH的接收时间与所述多个PDCCH的发送时间间隔之和或之差。
在本申请的一种实施方式中，所述多个PDCCH的发送时间间隔是通过RRC信令显式或隐式指示的；
或者，
所述多个PDCCH的发送时间间隔是通过DCI指示的。
本申请实施例提供的装置能够实现图8所示的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
图10为实现本申请实施例的一种终端的硬件结构示意图，该终端1000包括但不限于：射频单元1001、网络模块1002、音频输出单元1003、输入单元1004、传感器1005、显示单元1006、用户输入单元1007、接口单元1008、存储器1009、以及处理器1010等部件。
本领域技术人员可以理解，终端1000还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器1010逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图10中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元1004可以包括图形处理器(Graphics Processing Unit，GPU)10041和麦克风10042，图形处理器10041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元1006可包括显示面板10061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板10061。用户输入单元1007包括触控面板10071以及其他输入设备10072。触控面板10071，也称为触摸屏。触控面板10071可包括触摸检测装置和触摸控制器两个部分。其他输入设备10072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元1001将来自网络侧设备的下行数据接收后，给处理器1010处理；另外，将上行的数据发送给网络侧设备。通常，射频单元1001包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器1009可用于存储软件程序或指令以及各种数据。存储器1009可主要包括存储程序或指令区和存储数据区，其中，存储程序或指令区可 存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器1009可以包括高速随机存取存储器，还可以包括非易失性存储器，其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。
处理器1010可包括一个或多个处理单元；可选的，处理器1010可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序或指令等，调制解调处理器主要处理无线通信，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器1010中。
本申请实施例提供的终端能够实现图8所示的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述图8所示方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
结合本申请公开内容所描述的方法或者算法的步骤可以硬件的方式来实现，也可以由在处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于RAM、闪存、ROM、EPROM、EEPROM、寄存器、硬盘、移动硬盘、只读光盘或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以携带在ASIC中。另外，该ASIC可以携带在核心网接口设备中。当然，处理器和存储介质也 可以作为分立组件存在于核心网接口设备中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述的具体实施方式，对本申请的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本申请的具体实施方式而已，并不用于限定本申请的保护范围，凡在本申请的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本申请的保护范围之内。
本领域内的技术人员应明白，本申请实施例可提供为方法、系统、或计算机程序产品。因此，本申请实施例可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请实施例可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请实施例是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存 储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (16)

  1. 一种参考物理下行控制信道PDCCH的确定方法，应用于终端，包括：
    检测多个PDCCH；
    根据PDCCH的接收时间、PDCCH对应的搜索空间Search Space的标识ID、PDCCH对应的控制资源集合CORESET的ID中的一项或多项，将所述多个PDCCH中的一个PDCCH作为参考PDCCH。
  2. 根据权利要求1所述的方法，其中，所述根据PDCCH的接收时间、PDCCH对应的Search Space的ID、PDCCH对应的CORESET的ID中的一项或多项，将所述多个PDCCH中的一个PDCCH作为参考PDCCH，包括：
    将所述多个PDCCH中的第一PDCCH作为参考PDCCH；
    其中，所述第一PDCCH满足以下一项或多项：
    所述第一PDCCH对应的Search Space的ID大于或小于第二PDCCH对应的Search Space的ID；
    所述第一PDCCH对应的CORESET的ID大于或小于第二PDCCH对应的CORESET的ID；
    所述第一PDCCH的第一个符号的接收时间在第二PDCCH的第一个符号的接收时间之前或之后；
    其中，所述第二PDCCH是所述多个PDCCH中除所述第一PDCCH之外的其他PDCCH。
  3. 根据权利要求1所述的方法，其中，所述多个PDCCH用于调度相同的物理下行共享信道PDSCH、物理上行共享信道PUSCH、信道状态信息参考信号CSI-RS和探测参考信号SRS中的一项或多项。
  4. 根据权利要求2所述的方法，其中，在所述第一PDCCH对应的Search Space的ID大于或小于第二PDCCH对应的Search Space的ID，或者，所述第一PDCCH对应的CORESET的ID大于或小于第二PDCCH对应的CORESET的ID的情况下，所述第一PDCCH的第一个符号的发送时间早 于或晚于所述第二PDCCH的第一个符号的发送时间。
  5. 根据权利要求1或2所述的方法，其中，所述方法还包括：
    将所述参考PDCCH的第一个符号的接收时间作为参考时间；
    或者，
    将所述第二PDCCH的第一个符号的接收时间与所述多个PDCCH的发送时间间隔之和或之差作为参考时间；
    其中，在多个PDCCH调度相同的PDSCH、PUSCH、CSI-RS或SRS的情况下，所述参考时间与对应的所述PDSCH、PUSCH、CSI-RS或SRS的发送时间间隔作为第一时间间隔time offset；
    或者，在多个PDCCH调度相同的PDSCH或CSI-RS的情况下，所述参考时间与对应的所述PDSCH或CSI-RS的时间间隔作为第二time offset，所述第二time offset与门限的大小关系用于确定PDSCH或CSI-RS的准共址QCL关系；
    或者，在多个PDCCH调度相同的PDSCH或PUSCH的情况下，所述参考时间作为调度所述PDSCH或PUSCH的PDCCH的接收时间。
  6. 根据权利要求1所述的方法，其中，在多个PDCCH调度相同的PDSCH或PUSCH的情况下，所述参考PDCCH的最后1个符号作为所述多个PDCCH的最后1个符号。
  7. 根据权利要求5所述的方法，其中，
    所述第一time offset或者第二time offset的时间起始点等于所述参考PDCCH的接收时间；
    或者，
    所述第一time offset或者第二time offset的时间起始点等于所述参考PDCCH的接收时间与所述多个PDCCH的发送时间间隔之和或之差。
  8. 根据权利要求1所述的方法，其中，
    所述多个PDCCH的发送时间间隔是通过无线资源控制RRC信令显式或隐式指示的；
    或者，
    所述多个PDCCH的发送时间间隔是通过下行控制信息DCI指示的。
  9. 一种参考PDCCH的确定装置，应用于终端，包括：
    检测模块，用于检测多个PDCCH；
    确定模块，用于根据PDCCH的接收时间、PDCCH对应的Search Space的ID、PDCCH对应的CORESET的ID中的一项或多项，将所述多个PDCCH中的一个PDCCH作为参考PDCCH。
  10. 根据权利要求9所述的装置，其中，
    所述确定模块进一步用于：将所述多个PDCCH中的第一PDCCH作为参考PDCCH；
    其中，所述第一PDCCH满足以下一项或多项：
    所述第一PDCCH对应的Search Space的ID大于或小于第二PDCCH对应的Search Space的ID；
    所述第一PDCCH对应的CORESET的ID大于或小于第二PDCCH对应的CORESET的ID；
    所述第一PDCCH的第一个符号的接收时间在第二PDCCH的第一个符号的接收时间之前或之后；
    其中，所述第二PDCCH是所述多个PDCCH中除所述第二PDCCH之外的其他PDCCH。
  11. 根据权利要求9所述的装置，其中，
    所述多个PDCCH用于调度相同的PDSCH、PUSCH、CSI-RS和SRS中的一项或多项。
  12. 根据权利要求9所述的装置，其中，在所述第一PDCCH对应的Search Space的ID大于或小于第二PDCCH对应的Search Space的ID，或者，所述第一PDCCH对应的CORESET的ID大于或小于第二PDCCH对应的CORESET的ID的情况下，所述第一PDCCH的第一个符号的发送时间早于或晚于所述第二PDCCH的第一个符号的发送时间。
  13. 根据权利要求9或10所述的装置，其中，所述确定模块还用于：将所述参考PDCCH的第一个符号的接收时间作为参考时间；或者，将所述第二PDCCH的第一个符号的接收时间与所述多个PDCCH的发送时间间隔之和或之差作为参考时间；
    其中，在多个PDCCH调度相同的PDSCH、PUSCH、CSI-RS或SRS的情况下，所述参考时间与对应的所述PDSCH、PUSCH、CSI-RS或SRS的发送时间间隔作为第一time offset；
    或者，在多个PDCCH调度相同的PDSCH或CSI-RS的情况下，所述参考时间与对应的所述PDSCH或CSI-RS的时间间隔作为第二time offset，所述第二time offset与门限的大小关系用于确定PDSCH或CSI-RS的QCL关系；
    或者，在多个PDCCH调度相同的PDSCH或PUSCH的情况下，所述参考时间作为调度所述PDSCH或PUSCH的PDCCH的接收时间。
  14. 根据权利要求9所述的装置，其中，在多个PDCCH调度相同的PDSCH或PUSCH的情况下，所述参考PDCCH的最后1个符号作为所述多个PDCCH的最后1个符号。
  15. 一种终端，包括：处理器、存储器及存储在所述存储器上并可在所述处理器上运行的程序，所述程序被所述处理器执行时实现如权利要求1至8中任一项所述方法的步骤。
  16. 一种可读存储介质，所述可读存储介质上存储有程序，所述程序被处理器执行时实现包括如权利要求1至8中任一项所述的方法的步骤。
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