WO2023010665A1 - 搜索空间的确定方法、装置、设备及存储介质 - Google Patents

搜索空间的确定方法、装置、设备及存储介质 Download PDF

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Publication number
WO2023010665A1
WO2023010665A1 PCT/CN2021/119915 CN2021119915W WO2023010665A1 WO 2023010665 A1 WO2023010665 A1 WO 2023010665A1 CN 2021119915 W CN2021119915 W CN 2021119915W WO 2023010665 A1 WO2023010665 A1 WO 2023010665A1
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Prior art keywords
search space
pdcch
count value
candidate
target
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PCT/CN2021/119915
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English (en)
French (fr)
Inventor
方昀
陈文洪
史志华
黄莹沛
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Oppo广东移动通信有限公司
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Priority to CN202180097856.3A priority Critical patent/CN117256113A/zh
Publication of WO2023010665A1 publication Critical patent/WO2023010665A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a method, device, device, and storage medium for determining a search space.
  • the search space is a set of candidate Physical Downlink Control Channels (Physical Downlink Control CHannel, PDCCH) under a specific aggregation level (Aggregation Level, AL).
  • the terminal device determines several search spaces that meet its own blind detection capability from a group of search spaces configured by the network device, so as to perform blind detection on candidate PDCCHs in the search spaces.
  • the network device needs to carry the scheduling information on the candidate PDCCH in the search space within the range of the blind detection capability of the terminal based on the blind detection capability of the terminal.
  • Embodiments of the present application provide a method, device, device, and storage medium for determining a search space. Described technical scheme is as follows:
  • an embodiment of the present application provides a method for determining a search space, the method including:
  • the BD count value is used when the terminal device performs PDCCH repeated transmission, and the BD count value is greater than or equal to is an integer of 2, the set of search spaces includes an associated search space, and the associated search space is used for repeated transmission of the PDCCH.
  • an embodiment of the present application provides an apparatus for determining a search space, and the apparatus includes:
  • a determining module configured to determine a target search space in a search space set based on a BD count value and a terminal blind detection capability, the BD count value is used when the terminal device performs PDCCH repeated transmission, and the BD count value is an integer greater than or equal to 2,
  • the set of search spaces includes an associated search space, and the associated search space is used for PDCCH repeated transmission.
  • an embodiment of the present application provides a terminal device, where the terminal device includes a processor and a transceiver;
  • the processor is configured to determine the target search space in the search space set based on the BD count value and terminal blind detection capability, the BD count value is used when the terminal device performs PDCCH repeated transmission, and the BD count value is greater than or equal to 2 Integer, the set of search spaces includes an associated search space, and the associated search space is used for repeated transmission of the PDCCH.
  • an embodiment of the present application provides a network device, where the network device includes a processor and a transceiver;
  • the processor is configured to determine the target search space in the search space set based on the BD count value and terminal blind detection capability, the BD count value is used when the terminal device performs PDCCH repeated transmission, and the BD count value is greater than or equal to 2 Integer, the set of search spaces includes an associated search space, and the associated search space is used for repeated transmission of the PDCCH.
  • an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used for execution by a processor, so as to implement the above method for determining a search space.
  • a chip is provided, the chip includes a programmable logic circuit and/or program instructions, and when the chip is running, is used to implement the above method for determining a search space.
  • a computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and a processor reads from the The computer-readable storage medium reads and executes the computer instructions, so as to realize the above method for determining the search space.
  • the PDCCH repeated transmission is used
  • the BD count value can be greater than or equal to 2, so terminal devices and network devices need to specify how the BD count value is applied to the associated search space, and based on the BD count value, determine the target search space that meets the blind detection capability of the terminal from the search space set, so that the network
  • the device performs terminal scheduling in the target search space, and the terminal device performs PDCCH blind detection in the target search space to ensure the blind detection success rate of the terminal device.
  • Fig. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present application
  • FIG. 2 shows a flowchart of a method for determining a search space shown in an exemplary embodiment of the present application
  • FIG. 3 shows a flowchart of a method for determining a search space shown in another exemplary embodiment of the present application
  • Fig. 4 is an implementation schematic diagram of a target search space determination process shown in an exemplary embodiment of the present application.
  • Fig. 5 is an implementation schematic diagram of a target search space determination process shown in an exemplary embodiment of the present application.
  • FIG. 6 is a flow chart of a target search space determination process output by an exemplary embodiment of the present application.
  • FIG. 7 shows a flowchart of a method for determining a search space shown in another exemplary embodiment of the present application.
  • Fig. 8 is an implementation schematic diagram of a target search space determination process shown in an exemplary embodiment of the present application.
  • Fig. 9 is an implementation schematic diagram of a target search space determination process shown in an exemplary embodiment of the present application.
  • FIG. 10 is a flow chart of a target search space determination process output by an exemplary embodiment of the present application.
  • Fig. 11 shows a block diagram of an apparatus for determining a search space provided by an embodiment of the present application
  • Fig. 12 shows a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the evolution of the technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.
  • FIG. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present application.
  • the communication system may include: a terminal device 10 and an access network device 20 .
  • the terminal equipment 10 may refer to a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent or a user device.
  • UE User Equipment
  • the terminal device 10 may also be a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a Wireless Local Loop (Wireless Local Loop, WLL) station, a Personal Digital Assistant (PDA) ), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in the fifth generation mobile communication system (5th Generation System, 5GS) or future evolution
  • the terminal equipment in the Public Land Mobile Network (Public Land Mobile Network, PLMN), etc. is not limited in this embodiment of the present application.
  • the devices mentioned above are collectively referred to as terminal devices.
  • the number of terminal devices 10 is generally multiple, and one or more terminal devices 10 may be distributed in a cell managed by each access network device 20 .
  • a network device is a device deployed in an access network to provide a wireless communication function for the terminal device 10 .
  • Network equipment may include various forms of macro base stations, micro base stations, relay stations, access points and so on.
  • the names of devices with network device functions may be different.
  • gNodeB or gNB In systems using different radio access technologies, the names of devices with network device functions may be different.
  • gNodeB In 5G NR systems, they are called gNodeB or gNB.
  • the term "network equipment" may change as communications technology evolves.
  • the above-mentioned devices that provide the wireless communication function for the terminal device 10 are collectively referred to as network devices.
  • a communication relationship can be established between the terminal device 10 and the core network device through network devices.
  • the network device may be one or more of Evolved-Universal Terrestrial Radio Access Network (Evolved-Universal Terrestrial Radio Access Network, E-UTRAN) or E-UTRAN An eNodeB; in the 5G New Radio (New Radio, NR) system, the network device can be one or more gNBs in the Radio Access Network (RAN) or RAN.
  • E-UTRAN Evolved-Universal Terrestrial Radio Access Network
  • eNodeB Evolved-Universal Terrestrial Radio Access Network
  • NR New Radio
  • a network device may be deployed with multiple transmission reception points (Transmission Reception Point, TRP), so as to implement PDCCH enhancement based on multiple transmission reception points (Multi Transmission Reception Point, MTRP).
  • TRP Transmission Reception Point
  • MTRP Multiple Transmission Reception Point
  • FIG. 1 network devices correspond to TRP1 , TRP2 and TRP3 (TRP is marked as 20 in FIG. 1 ).
  • TRP1 and TRP2 correspond to the first cell
  • TRP3 corresponds to the second cell.
  • Search Space Set A set of search spaces (including at least two search spaces) configured by the network side, and the search space is a collection of candidate PDCCH (PDCCH candidates) at a specific aggregation level (Aggregation Level, AL) .
  • the terminal device will decode the candidate PDCCH in the search space, and when the verification is passed, determine that the decoded candidate PDCCH is valid, and then use the information obtained from the decoding (such as transmission scheduling indication, timing, etc.) slot interval indication, power control command, etc.) for subsequent operations.
  • Associated search space In R17, MTRP-based PDCCH enhancement is introduced, and PDCCH repeated transmission (repetition) is performed by associating two search spaces.
  • the number of candidate PDCCHs at each aggregation level in the associated search space is equal, and the candidate PDCCHs corresponding to the same index (index) in the associated search space are associated.
  • the associated search space includes search space SS1 and search space SS2, and both SS1 and SS2 contain five candidate PDCCHs, and the first candidate PDCCH in SS1 is associated with the first candidate PDCCH in SS2, and the first candidate PDCCH in SS1 The two PDCCH candidates are associated with the second PDCCH candidate in SS2, and so on.
  • the associated search spaces correspond to different control resource sets (COntrol REsource Set, CORESET), and under the same aggregation level, the candidate PDCCHs with the same index in the associated search space are used to transmit the same downlink control information (Downlink Control Information, DCI), This DCI is used to invoke the same physical channel.
  • COntrol REsource Set CORESET
  • DCI Downlink Control Information
  • the terminal device judges each search space one by one based on the size of the search space identifier, and the BD count value of each candidate PDCCH in the search space is 1; while in R17, due to the introduction of repeated transmission of PDCCH, for users
  • the terminal device performs PDCCH blind detection, it can separately detect two associated candidate PDCCHs in the associated search space, or perform soft combination on the two associated candidate PDCCHs. Therefore, The BD count value of the candidate PDCCH can be greater than or equal to 2.
  • the aggregation level of the search space and the number of candidate PDCCHs in each aggregation level are predefined or obtained implicitly according to the size of the control channel resource.
  • LTE supports reducing the number of candidate PDCCHs for blind detection by a certain proportion, the flexibility remains restricted.
  • the DCI format, aggregation level, the number of candidate PDCCHs corresponding to the aggregation level, and the detection period of the search space in the time domain can be configured through high-level signaling. Based on this configuration information, the complexity of blind detection can be flexibly controlled. .
  • the candidate PDCCH configured on the network side in NR may exceed the upper limit of the blind detection capability of the terminal device.
  • the terminal device needs to determine the actual detection from the configured candidate PDCCH according to a predefined mechanism.
  • candidate PDCCHs that is, a subset is determined from the configured candidate PDCCHs).
  • FIG. 2 shows a flow chart of a method for determining a search space shown in an exemplary embodiment of the present application. This method is applied to a communication device (terminal device 10 or network device 20 shown in FIG. 1 ) in this embodiment. ) as an example for illustration.
  • Step 210 determine the target search space in the search space set based on the BD count value and the blind detection capability of the terminal, the BD count value is used when the terminal device performs PDCCH repeated transmission, the BD count value is an integer greater than or equal to 2, and the search space set includes an associated search space, and the associated search space is used for PDCCH repeated transmission.
  • the search space set is all search spaces configured by the network side (there may be search spaces for sending PDCCH in different time units), or the search space set is all search spaces configured by the network side, in A set of search spaces for sending the PDCCH in the same time unit.
  • the time unit may be a slot or a span, and the time unit may also be called a time unit.
  • the set of search spaces includes an associated search space, and the associated search space is used to implement repeated transmission of the PDCCH.
  • the two search spaces in the associated search space correspond to different CORESETs respectively, and under the same set level, the candidate PDCCHs with the same index in the associated search space are used to transmit the same DCI, and the DCI is used to call the same physical channel.
  • the associated search space is configured through high-layer signaling or physical layer signaling.
  • the associated search space includes a search space SS2 and a search space SS3, and both SS2 and SS3 include 5 PDCCHs.
  • the candidate PDCCH with index 1 in SS2 and the candidate PDCCH with index 1 in SS3 are used to transmit DCI 1
  • the candidate PDCCH with index 2 in SS2 is used for the candidate PDCCH with index 2 in SS3. to transmit DCI 2, and so on.
  • the search space set may include other search spaces besides the associated search space, and the embodiment of the present application does not limit the number of search spaces in the search space set.
  • the number of blind detections of candidate PDCCHs in the associated search space may be greater than one, and correspondingly, the BD count value used by the terminal device for repeated PDCCH transmission may be greater than or equal to 2.
  • the terminal device when performing blind detection on the candidate PDCCHs in the associated search space, the terminal device can not only perform blind detection on the candidate PDCCHs in the two search spaces, but also perform blind detection on the candidate PDCCHs in the two search spaces.
  • the BD count value adopted by the terminal equipment will no longer be 1 in this case.
  • the terminal device Since the candidate PDCCH contained in the search space set can exceed the upper limit of the blind detection capability of the terminal device, the terminal device needs to combine its own blind detection capability to filter out part of the search space from the search space set. In this scenario, the terminal device needs to determine the way the BD count value is mapped to the associated search space, and determine the target search space that meets the blind detection capability of the terminal itself from the search space set (the target search space is a subset of the search space set).
  • Network devices also need to clarify how the BD count value is mapped to the associated search space, so that based on the blind detection capability of the terminal, the target search space that meets the blind detection capability of the terminal can be selected from the search space, and then the PDCCH is sent on the target search space to avoid The PDCCH is sent in a search space beyond the blind detection capability of the terminal, causing the blind detection of the terminal to fail.
  • the blind detection capability of the terminal includes: an upper limit on the number of PDCCH detections within a time unit, and/or an upper limit on the number of non-overlapping CCEs.
  • the time unit can be slot or span.
  • the target search space is the search space for sending the PDCCH within the same time unit.
  • the BD count value is used to represent the total number of blind detection times of candidate PDCCHs in each search space in the associated search space, and the BD count value can be 2 or 3, and the embodiment of the present application does not limit the specific value of the BD count value .
  • the public search space set takes precedence over the UE-specific search space set
  • the search space with a small ID number is prioritized over the search space with a large ID number
  • the configured UE-specific search space is included in the UE detection search space and exceeds the blind detection capability of the terminal device, all candidate PDCCHs in this UE-specific search space will not be blind-detected, and the UE whose ID number is greater than this search space
  • the dedicated search space also does not perform blind detection;
  • the blind detection complexity of the public search space set does not exceed the blind detection capability of the terminal device.
  • the communication device also follows the above criteria when determining the target search space.
  • the target search space determined by the communication device includes the associated search space at the same time, or does not include the associated search space at the same time, or includes one of the associated search spaces.
  • the set of search spaces includes SS1, SS2, SS3 and SS4, wherein SS2 and SS3 are associated search spaces.
  • the target search space determined by the communication device based on the BD count value and the terminal blind detection capability includes SS1, SS2, and SS3 (including the associated search space), or, the target search space includes SS1 (and does not include the associated search space), or, the target The search spaces include SS1 and SS2 (only one of the associated search spaces is included).
  • the configured search space set can exceed the upper limit of the blind detection capability of the terminal device, and when the search space set includes the associated search space for PDCCH repeated transmission, the PDCCH The BD count value used for repeated transmissions can be greater than or equal to 2. Therefore, terminal devices and network devices need to clarify how the BD count value is applied to the associated search space, and determine the target that meets the blind detection capability of the terminal from the search space based on the BD count value. Search space, so that the network device can perform terminal scheduling in the target search space, and the terminal device can perform PDCCH blind detection in the target search space, so as to ensure the blind detection success rate of the terminal device.
  • the network device when the communication device is a network device, after the target search space is determined, the network device performs terminal scheduling on candidate PDCCHs in the target search space to avoid terminal scheduling on candidate PDCCHs in other search spaces in the search space set.
  • the network device performs terminal scheduling on candidate PDCCHs in the target search space to avoid terminal scheduling on candidate PDCCHs in other search spaces in the search space set.
  • the blind detection fails, which in turn leads to the problem of scheduling failure.
  • the terminal device when the communication device is a terminal device, after determining the target search space, the terminal device performs blind detection on candidate PDCCHs in the target search space, so that when the blind detection is successful, based on the decoded information in the PDCCH follow up. Since the network device and the terminal device determine the target search space based on the same BD count value and terminal blind detection capability, the blind detection success rate of the terminal device can be guaranteed.
  • the terminal device when the target search space contains associated search spaces at the same time, the terminal device performs blind detection on the associated search spaces based on the BD count value; when the target search space contains only one search space in the associated search spaces When , the terminal device conducts blind detection on the search space with the BD count value being 1.
  • the BD count value is determined by the terminal device itself, and reported to the network device when the PDCCH is repeatedly transmitted (can be obtained from multiple Select and report from the candidate values configured), so that the network device can control PDCCH delivery based on the BD count value, and ensure the consistency of the determined target search space.
  • the terminal device reports multiple candidate BD count values to the network device, and the network device selects and configures the BD count value from the multiple candidate BD count values.
  • the candidate BD count values reported by the terminal device to the network device are 2 and 3, and the network device selects and configures the BD count value as 3.
  • the BD count value is a default value, which is adopted by both the terminal device and the network device, and the terminal device does not need to report, for example, the BD count value is 2 by default.
  • the communication device when the communication device determines the target search space in the search space set based on the BD count value and its own blind detection capability, it can regard the two search spaces in the associated search space as independent search spaces, and determine each The blind detection complexity of the search space, correspondingly, the determined target search space may only include one search space in the associated search space.
  • the communication device may regard the two search spaces in the associated search space as a whole, and determine the overall blind detection complexity of the associated search space.
  • the determined target search space either Both contain the associated search space, or both do not contain the associated search space.
  • FIG. 3 shows a flow chart of a method for determining a search space shown in another exemplary embodiment of the present application.
  • This embodiment applies this method to a communication device (the terminal device 10 or network device shown in FIG. 1 20) as an example for illustration.
  • Step 310 determine that the first BD count value corresponding to the i-th search space is m, the second BD count value corresponding to the j-th search space is n-m, and m is a positive integer smaller than n.
  • the associated search space is the i-th search space and the j-th search space in the search space set.
  • the search space identifier of the i-th search space is continuous with the search space identifier of the j-th search space, that is, the difference between i and j is 1;
  • the search space identifier of the i-th search space is not continuous with the search space identifier of the j-th search space, that is, the difference between i and j is greater than or equal to 2.
  • the search spaces in the search space set include SS1, SS2, SS3, and SS4, where the associated search spaces may be SS2 and SS3, or the associated search spaces may be SS2 and SS4.
  • the communication device when determining the target search space from the set of search spaces, the communication device needs to map the BD count value to the associated search space, that is, assign the BD count value to the i-th search space and the j-th search space, where , the sum of the BD count values assigned to the i-th search space and the j-th search space is the BD count value used for PDCCH repeated transmission, and the BD count values assigned to each search space are greater than or equal to 1.
  • the BD count value when the BD count value is 2, the value of the first BD count assigned to the i-th search space is 1, and the value of the second BD count assigned to the j-th search space is 1; when BD When the count value is 3, the first BD count value assigned to the i-th search space is 1, and the second BD count value assigned to the j-th search space is 2.
  • the BD count value assigned to the search space is positively correlated with the size of the search space identifier. For example, when the search space identifier of the i-th search space is smaller than the search space identifier of the j-th search space, the first BD count value Less than or equal to the second BD count value.
  • SS2 and SS3 in the search space set are associated search spaces.
  • the BD count value is 2
  • the first BD count value corresponding to SS2 is 1
  • the second BD count value corresponding to SS3 is 1.
  • SS2 and SS3 in the search space set are associated search spaces.
  • the BD count value is 3
  • the first BD count value corresponding to SS2 is 1
  • the second BD count value corresponding to SS3 is 2.
  • Step 320 Determine the target search space in the search space set based on the first BD count value, the second BD count value and the blind detection capability of the terminal.
  • the blind detection capability of the terminal includes the number of detections of candidate PDCCHs and non-overlapped CCEs (non-overlapped CCEs) within a unit time (slot or span). Since the detection number of candidate PDCCHs in the search space is related to the BD count value of the candidate PDCCH, in a possible implementation, the communication device determines the number of candidate PDCCHs in each search space in the search space set, and the non-overlapping of each search space The number of CCEs, so as to determine the target search space in the search space set based on the number of candidate PDCCHs, the number of non-overlapping CCEs, the first BD count value, the second BD count value, and the blind detection capability of the terminal.
  • the search space SS1 in the search space set contains 10 candidate PDCCHs, and the number of non-overlapping CCEs is 12; the search space SS2 contains 5 candidate PDCCHs, and the number of non-overlapping CCEs is 8 ;
  • the search space SS3 includes 5 candidate PDCCHs, and the number of non-overlapping CCEs is 10; the search space SS4 includes 6 candidate PDCCHs, and the number of non-overlapping CCEs is 6.
  • the communication device sequentially determines the total number of candidate PDCCHs that need to be detected when performing blind detection on at least one PDCCH in SS1 based on the ascending order of search space identifiers corresponding to each search space in the search space set, and Total number of overlapping CCEs.
  • the communication device first calculates the detection total number of candidate PDCCHs and the total number of non-overlapping CCEs in the blind detection process only for SS1, then for SS1 and SS2, then for SS1, SS2 and SS3, and finally for SS1 and SS2 , SS3 and SS4.
  • the process of determining the target search space may include the following steps.
  • Step 321 according to the ascending order of the search space identification, based on the number of candidate PDCCHs, the first BD count value and the second BD count value, determine the pth detection number, the pth detection number is the total number of detections of the candidate PDCCH in the previous p search spaces , the first p search spaces perform PDCCH transmission in the same time unit, and p is a positive integer.
  • the communication device needs to determine the target search space from the search spaces that send the PDDCH within the same time unit.
  • SS1 transmits PDCCH in time slot 0 and time slot 5
  • SS2 transmits PDCCH in time slot 5
  • SS3 transmits PDCCH in time slot 10 and time slot 20.
  • the first p search spaces perform PDCCH transmission in the same time unit.
  • the total number of detections of the candidate PDCCHs is calculated according to the ascending order of the search space identifiers, that is, the total number of detections of the candidate PDCCHs is calculated according to the descending order of the priority of the search spaces.
  • the detection times of the candidate PDCCH in the i-th search space is the number of candidate PDCCHs ⁇ the first BD count value;
  • the j-th search space is included in the current p search space, the The detection times of candidate PDCCHs in j search space is the number of candidate PDCCHs ⁇ the second BD count value.
  • the BD count value corresponding to other search spaces other than the associated search space is 1.
  • Step 322 Determine the total number of qth non-overlapping CCEs based on the number of non-overlapping CCEs in ascending order of the search space identifiers.
  • the qth total number of non-overlapping CCEs is the total number of non-overlapping CCEs in the first q search spaces.
  • PDCCH transmission is performed in time units, and q is a positive integer.
  • Step 323 In response to the fact that the pth detection number is greater than the upper limit of the PDCCH detection number and the p-1th detection number is less than or equal to the upper limit of the PDCCH detection number, determine the first p-1 search spaces as the first candidate search spaces.
  • the terminal device is set with an upper limit of the number of PDCCH detections, and the communication device detects whether the pth detection number is greater than the upper limit of the PDCCH detection number, that is, determines whether the PDCCH detection of the first p search spaces exceeds the upper limit of the PDCCH detection capability.
  • the detection number is greater than the upper limit of the PDCCH detection number, it is determined that the upper limit of the PDCCH detection capability is exceeded, so that the first p-1 search spaces are determined as the first candidate search spaces that meet the terminal's PDCCH detection capability; if the pth detection number is less than or equal to the upper limit of the PDCCH detection number , it is further detected whether the p+1th detection number is greater than the upper limit of the PDCCH detection number.
  • the terminal equipment determines the first candidate search space Includes SS1, SS2 and SS3.
  • the communication device determines the first candidate search space Includes SS1 and SS2.
  • Step 324 in response to the fact that the total number of qth non-overlapping CCEs is greater than the upper limit of the number of non-overlapping CCEs, and the total number of q-1th non-overlapping CCEs is less than or equal to the upper limit of the number of non-overlapping CCEs, determine the first q-1 search spaces as the second candidate search space .
  • the terminal device is set with an upper limit on the number of non-overlapping CCEs, and the communication device detects whether the total number of qth non-overlapping CCEs is greater than the upper limit on the number of non-overlapping CCEs, that is, to determine whether the CCE detection of the first q search spaces exceeds the upper limit of the CCE detection capability , if the total number of qth non-overlapping CCEs is greater than the upper limit of the number of non-overlapping CCEs, it is determined that the upper limit of the CCE detection capability is exceeded, so that the first p-1 search spaces are determined as the second candidate search spaces that meet the terminal CCE detection capability; If the total number of overlapping CCEs is less than or equal to the upper limit of the number of non-overlapping CCEs, it is further checked whether the total number of q+1th non-overlapping CCEs is greater than the upper limit of the number of non-overlapping CCEs.
  • the communication The device determines that the second candidate search space includes SS1, SS2 and SS3.
  • Step 325 determine the intersection of the first candidate search space and the second candidate search space as the target search space.
  • the communication device determines the intersection of the first candidate search space and the second candidate search space as the target search space.
  • the communication device determines that the target search spaces are SS1, SS2 and SS3; as shown in Figure 5 , since the first candidate search spaces are SS1 and SS2, and the second candidate search spaces are SS1, SS2 and SS3, the communication device determines that the target search spaces are SS1 and SS2.
  • the terminal device when the terminal device performs blind detection of PDCCH, it can only perform blind detection on candidate PDCCHs in one search space in the associated search space, or perform blind detection on candidate PDCCHs in two search spaces in the associated search space at the same time. , it is also possible not to perform blind detection on candidate PDCCHs in any search space in the associated search space.
  • each candidate PDCCH in the i-th search space corresponds to the first BD count value
  • each candidate PDCCH in the j-th search space corresponds to the second BD count value as an example for illustration.
  • the other search space performs blind detection before the associated search space
  • the corresponding candidate PDCCH in the associated search space does not need blind detection, that is, the candidate PDCCH is not included in the BD count value.
  • the communication device before calculating the number of PDCCH detections, the communication device needs to detect whether there is a candidate PDCCH in the i-th search space that uses the same CCE, scrambling identifier, and DCI format, wherein the search space identifier of the kth search space is smaller than the search space identifier of the ith search space, that is, the blind detection priority of the kth search space is higher than that of the ith search space.
  • the communication device determines that each candidate PDCCH in the associated search space is included in the calculation of the number of PDCCH detections, and also That is, each candidate PDCCH in the i-th search space corresponds to the first BD count value, and each candidate PDCCH in the j-th search space corresponds to the second BD count value.
  • the communication device determines that the target candidate PDCCH is not included in the calculation of the number of PDCCH detections, that is, the target candidate PDCCH corresponds to The BD count value is 0.
  • the communication device needs to further detect whether the associated candidate PDCCH associated with the target candidate PDCCH in the j-th search space uses the same CCE, scrambling ID and DCI format.
  • the communication device determines the associated candidate PDCCH associated with the target candidate PDCCH in the jth search space.
  • the associated candidate PDCCH has the same index as the target candidate PDCCH. For example, when the first PDCCH candidate in the i-th search space is the target candidate PDCCH, the communication device determines that the first PDCCH candidate in the j-th search space is the associated candidate PDCCH.
  • the communication device detects whether there is a candidate PDCCH in the lth search space and the associated candidate PDCCH uses the same CCE, scrambling identifier, and DCI format, wherein the search space identifier of the lth search space is smaller than the search space identifier of the jth search space, That is, the blind detection priority of the lth search space is higher than that of the jth search space.
  • the communication device determines that the associated candidate PDCCH is not included in the total number of candidate PDCCH blind detection times;
  • the communication device determines that the associated candidate PDCCH is included in the calculation of the number of PDCCH detections, and determines that the BD count value of the associated candidate PDCCH is 1 .
  • the set of search spaces includes SS1 (the number of candidate PDCCHs is 10), SS2 (the number of candidate PDCCHs is 5), SS3 (the number of candidate PDCCHs is 6) and SS4 (the number of candidate PDCCHs is 5), wherein, SS2 and SS4 are associated search spaces.
  • the communication device determines that the first candidate PDCCH in SS2 is not included in the calculation of the number of PDCCH detections; further, because SS1 and SS3 There is no candidate PDCCH that uses the same CCE, scrambling identifier, and DCI format as the first candidate PDCCH in SS4, so the communication device determines that the first candidate PDCCH in SS4 is included in the calculation of the number of PDCCH detections.
  • FIG. 7 shows a flow chart of a method for determining a search space shown in another exemplary embodiment of the present application.
  • This embodiment applies this method to a communication device (terminal device 10 or network device shown in FIG. 1 20) as an example for illustration.
  • Step 710 determine the number of candidate PDCCHs in each search space in the search space set, and the number of non-overlapping CCEs in each search space.
  • the search space set search space SS1 contains 10 candidate PDCCHs, and the number of non-overlapping CCEs is 12; the search space SS2 contains 5 candidate PDCCHs, and the number of non-overlapping CCEs is 8 ;
  • the search space SS3 includes 5 candidate PDCCHs, and the number of non-overlapping CCEs is 10; the search space SS4 includes 6 candidate PDCCHs, and the number of non-overlapping CCEs is 6.
  • Step 720 Determine the target search space in the search space set based on the number of candidate PDCCHs, the number of non-overlapping CCEs, the BD count value, and the blind detection capability of the terminal.
  • the determined target search space either includes the associated search space or does not include the associated search space at the same time.
  • the target search space that meets the terminal blind detection capability it is not the The BD count value is mapped to the i-th search space and the j-th search space respectively (that is, there is no need to determine the first BD count value and the second BD count value), but the BD count value is mapped to the entire associated search space.
  • the terminal communication device calculates the number of PDCCH detections based on the number of candidate PDCCHs and the BD count value, and calculates the total number of non-overlapping CCEs based on the number of non-overlapping CCEs, so as to determine the target search space based on the calculation results and the blind detection capability of the terminal.
  • the process of determining the target search space may include the following steps.
  • Step 721 according to the descending order of the priority of the search space, based on the number of candidate PDCCHs and the BD count value, determine the xth detection number, the xth detection number is the total number of detections of the candidate PDCCHs in the search space corresponding to the previous x priorities, the first x
  • the search spaces corresponding to the priorities perform PDCCH transmission in the same time unit, and the search spaces corresponding to the first x priorities include associated search spaces at the same time, or do not include associated search spaces at the same time, and x is a positive integer.
  • Search space concentration by default, the priority of the search space is negatively correlated with its search space ID, that is, the smaller the search space ID, the higher the priority of the search space. For example, when the search spaces are concentrated, the priority of the search spaces is SS1 > SS2 > SS3 > SS4.
  • the two search spaces in the associated search space need to calculate the number of PDCCH detections at the same time.
  • the search space identifiers of the associated search spaces are not adjacent, that is, there are other search spaces between the i-th search space and the j-th search space, in order to ensure that the two search spaces in the associated search space simultaneously perform the PDCCH detection number calculation, the communication device It is necessary to set the i-th search space and the j-th search space to the same priority, so that when the subsequent PDCCH detection number is calculated based on the priority of the search space, other search spaces between the i-th search space and the j-th search space can be skipped, And simultaneously calculate the i-th search space and the j-th search space.
  • the priority of the j-th search space is set as the priority of the i-th search space; or, the priority of the i-th search space
  • the level is set as the priority of the jth search space.
  • the priority of the two search spaces in the associated search space may be the priority of the search space with the smaller search space identifier, or the priority of the search space with the larger search space identifier.
  • the priority of SS4 is set as the priority of SS2, and the search space set
  • the communication device calculates the total number of detections of candidate PDCCHs, if the search spaces corresponding to the first x priorities include associated search spaces at the same time, the total number of detections of candidate PDCCHs corresponding to the associated search spaces is the number of candidate PDCCHs ⁇ BD count value.
  • the first detection number is the total number of detections of candidate PDDCHs in SS1
  • the second detection number is The total number of detections of candidate PDDCHs in SS1, SS2 and SS4
  • the third detection number is the total number of detections of candidate PDDCHs in SS1, SS2, SS4 and SS3; if SS2 and SS4 are associated search spaces, and the priority of SS2 is set to SS4 priority, the first detection number is the total number of detections of candidate PDDCHs in SS1, the second detection number is the total number of detections of candidate PDDCHs in SS1 and SS3, and the third detection number is the total number of detections of candidate PDDCHs in SS1, SS3, SS2 and SS4 The total number of PDDCH detections.
  • Step 722 Determine the total number of y-th non-overlapping CCEs based on the number of non-overlapping CCEs in descending order according to the priority of the search space.
  • Priority-corresponding search spaces perform PDCCH transmission in the same time unit, and the first y priority-corresponding search spaces include associated search spaces or do not include associated search spaces at the same time, and y is a positive integer.
  • the communication device calculates the total number of non-overlapping CCEs in the search space in descending order of priority of the search space based on the number of non-overlapping CCEs in each search space. Among them, the number of non-overlapping CCEs corresponding to the associated search space is included in the calculation at the same time, or is not included in the calculation at the same time.
  • the priority of SS4 is set as the priority of SS2
  • the total number of the first non-overlapping CCEs is the number of non-overlapping CCEs in SS1
  • the second non-overlapping CCEs The total number is the sum of the number of non-overlapping CCEs in SS1, SS2, and SS4
  • the third total number of non-overlapping CCEs is the sum of the number of non-overlapping CCEs in SS1, SS2, SS4, and SS3;
  • SS2 and SS4 are associated search spaces, and SS2 has priority
  • the first total number of non-overlapping CCEs is the number of non-overlapping CCEs in SS1
  • the second total number of non-overlapping CCEs is the sum of the number of non-overlapping CCEs in SS1 and SS3
  • the third total number of non-overlapping CCEs is SS1 , SS3, SS2 and SS4
  • Step 723 In response to the fact that the x-th detection number is greater than the upper limit of the PDCCH detection number and the x-1th detection number is less than or equal to the upper limit of the PDCCH detection number, determine the search spaces corresponding to the first x-1 priorities as the first candidate search spaces.
  • the terminal device is provided with an upper limit of the number of PDCCH detections, and the communication device detects whether the xth detection number is greater than the upper limit of the PDCCH detection number, that is, determines whether the PDCCH detection of the first x priority search spaces exceeds the upper limit of the PDCCH detection capability, If the xth detection number is greater than the upper limit of the PDCCH detection number, it is determined that the upper limit of the PDCCH detection capability is exceeded, so that the search space of the first x-1 priority is determined as the first candidate search space that meets the terminal PDCCH detection capability; if the xth detection number If it is less than or equal to the upper limit of the PDCCH detection number, it is further checked whether the x+1th detection number is greater than the upper limit of the PDCCH detection number.
  • the difference between the search space of the first x priority and the search space of the first x-1 priority may be 1 (when the search space of the xth priority does not belong to the associated search space) or 2 (the xth priority when the prioritized search space belongs to the associated search space).
  • the communication device determines the first candidate search space Includes SS1, SS2 and SS3.
  • the communication device determines the first candidate search space including SS1.
  • Step 724 In response to the fact that the total number of y-th non-overlapping CCEs is greater than the upper limit of the number of non-overlapping CCEs, and the total number of y-1th non-overlapping CCEs is less than or equal to the upper limit of the number of non-overlapping CCEs, determine the search space corresponding to the first y-1 priorities as the first Two candidate search spaces.
  • the terminal device is set with an upper limit for the number of non-overlapping CCEs, and the communication device detects whether the total number of y-th non-overlapping CCEs is greater than the upper limit for the number of non-overlapping CCEs, that is, to determine whether the CCE detection of the previous y priority search spaces exceeds the CCE
  • the upper limit of the detection capability if the total number of y-th non-overlapping CCEs is greater than the upper limit of the number of non-overlapping CCEs, it is determined that the upper limit of the CCE detection capability is exceeded, so that the search space of the first y-1 priorities is determined as the second candidate search that meets the terminal CCE detection capability space; if the total number of y-th non-overlapping CCEs is less than or equal to the upper limit of the number of non-overlapping CCEs, it is further checked whether the total number of q+1th non-overlapping CCEs is greater than the upper limit of the number of non-overlapping CCEs.
  • the communication The device determines that the second candidate search space includes SS1, SS2 and SS3.
  • Step 725 Determine the intersection of the first candidate search space and the second candidate search space as the target search space.
  • the communication device determines the intersection of the first candidate search space and the second candidate search space as the target search space.
  • the communication device determines that the target search spaces are SS1, SS2 and SS3; as shown in Figure 9 , since the first candidate search space is SS1, and the second candidate search spaces are SS1, SS2, and SS3, the communication device determines that the target search space is SS1.
  • the terminal device when the terminal device performs PDCCH blind detection, it either performs blind detection on candidate PDCCHs in two search spaces in the associated search space at the same time, or does not perform blind detection on candidate PDCCHs in any search space in the associated search space.
  • the candidate PDCCH in the associated search space uses the same CCE, scrambling identifier, and DCI format as the candidate PDCCH in other search spaces, and the other search space is
  • blind detection is performed before the search space, the corresponding candidate PDCCH in the associated search space does not need blind detection, that is, the candidate PDCCH is not included in the BD count value.
  • the communication device detects whether there is a candidate PDCCH in the associated search space that uses the same CCE, scrambling identifier and DCI format as the candidate PDCCH in the kth search space .
  • the search space identifier of the kth search space is smaller than the search space identifier of the associated search space, that is, the blind detection priority of the kth search space is higher than that of the associated search space.
  • the communication device determines that each candidate PDCCH in the associated search space is included in the calculation of the number of PDCCH detections.
  • the communication device determines that the target candidate PDCCH and the associated candidate PDCCH corresponding to the target candidate PDCCH are not included in the PDCCH Detection count calculation.
  • the communication device determines the target candidate PDCCH, and the target candidate PDCCH in the j-th search space
  • Candidate PDCCHs with the same PDCCH index are not included in PDCCH detection.
  • the number of candidate PDCCHs corresponding to the associated search space is reduced by one.
  • the i-th search space and the j-th search space are used to transmit the PDCCH in the same time unit as an example.
  • the network side configures the associated search space for PDCCH repeated transmission
  • the detection moments of are not in the same time unit, that is, the associated i-th search space and j-th search space may perform PDCCH transmission in different time units.
  • the i-th search space is used for PDCCH transmission in the first time unit (such as the first slot)
  • the j-th search space is used for PDCCH transmission in the second time unit (such as the second slot).
  • the communication device when the communication device selects the target search space from the search space set, it needs to determine the first target search space corresponding to the first time unit and the second target search space corresponding to the second time unit.
  • the communication device may include the following steps when determining the target search space:
  • the blind detection capability of the terminal includes the number of detections of candidate PDCCHs and non-overlapping CCEs within a unit time (slot or span). Since the detection number of candidate PDCCHs in the search space is related to the BD count value of the candidate PDCCH, in a possible implementation manner, the communication device determines the number of candidate PDCCHs in each search space corresponding to the first time unit in the search space set, and The number of non-overlapping CCEs in each search space, so as to determine the first target search space based on the number of candidate PDCCHs, the number of non-overlapping CCEs, the first BD count value corresponding to the i-th search space, and the terminal blind detection capability (the terminal can The blind detection of each search space in the first target search space is completed within the unit).
  • the communication device determines that the first BD count value corresponding to SS2 is 1, and the second BD count value corresponding to SS5 is 2. Based on the number of candidate PDCCHs, the number of non-overlapping CCEs, the first BD count value of 1, and the terminal blind detection capability of SS1, SS2, and SS3, the communication device determines that the first target search space includes SS1 and SS2.
  • the communication device determines the number of candidate PDCCHs in each search space corresponding to the second time unit in the search space set, and the number of non-overlapping CCEs in each search space, so that based on the number of candidate PDCCHs, non-overlapping CCEs
  • the quantity, the second BD count value corresponding to the jth search space, and the blind detection capability of the terminal determine the second target search space (the terminal can complete the blind detection of each search space in the second target search space within the second time unit).
  • the communication device determines that the first BD count value corresponding to SS2 is 1, and the second BD count value corresponding to SS5 is 2. Based on the number of candidate PDCCHs, the number of non-overlapping CCEs, the second BD count value 2, and the terminal blind detection capability of SS4, SS5, and SS6, the communication device determines that the second target search space includes SS4.
  • the terminal when the terminal performs PDCCH blind detection, in addition to detecting two associated candidate PDCCHs in the associated search space, it can also detect two associated candidate PDCCHs after soft combining. Therefore, the communication device needs to combine
  • the first time unit corresponds to the inclusion of the i-th search space in the first target search space, and the second target search space corresponding to the second time unit is determined.
  • the communication device may include the following steps when determining the target search space:
  • the second target search space Based on the second BD count value, the blind detection capability of the terminal, and the first target search space, determine the second target search space corresponding to the second time unit in the search space set.
  • the communication device needs to dynamically determine the second BD count value corresponding to the j-th search space according to whether the first target search space includes the i-th search space, and then determine the second target search space according to the dynamically determined second BD count value.
  • the communication device determines the second target corresponding to the second time unit in the search space set based on the second BD count value and the blind detection capability of the terminal search space.
  • the communication device In response to the fact that the i-th search space is not included in the first target search space, since the i-th search space is ignored in the first time unit, soft merge detection cannot be performed on the i-th search space and the j-th search space in the second time unit , and then the communication device updates the second BD count value to 1.
  • the communication device determines the second target search space corresponding to the second time unit in the search space set based on the updated second BD count value and the blind detection capability of the terminal.
  • the communication device initially determines that the first BD count value corresponding to SS2 is 1, and the second BD count value corresponding to SS5 is 2.
  • the communication device determines that the first target search space includes SS1 and SS2.
  • the communication device is based on the number of candidate PDCCHs, the number of non-overlapping CCEs, the second BD count value 2, and With terminal blind detection capability, the communication device determines that the second target search space includes SS4.
  • the communication device determines that the first target search space includes SS1.
  • the communication device determines that the second target search space includes SS4 and SS5.
  • FIG. 11 shows a block diagram of an apparatus for determining a search space provided by an embodiment of the present application.
  • the device has the function of realizing the above method example, and the function may be realized by hardware, or may be realized by executing corresponding software by hardware.
  • the device can include:
  • a determination module 1110 configured to determine a target search space in the search space set based on a BD count value and a terminal blind detection capability, the BD count value is used when the terminal device performs PDCCH repeated transmission, and the BD count value is an integer greater than or equal to 2 , the set of search spaces includes an associated search space, and the associated search space is used for repeated transmission of the PDCCH.
  • the associated search space is the i-th search space and the j-th search space in the set of search spaces, where i and j are positive integers;
  • the search space identifiers of the i-th search space and the j-th search space are continuous, or the search space identifiers of the i-th search space and the j-th search space are discontinuous.
  • the BD count value is n
  • the determining module 1110 includes:
  • the first determining unit is configured to determine that the first BD count value corresponding to the i-th search space is m, and the second BD count value corresponding to the j-th search space is n-m, where m is a positive integer less than n;
  • a second determining unit configured to determine the target search space in the set of search spaces based on the first BD count value, the second BD count value, and the blind detection capability of the terminal.
  • the BD count value is 2, the first BD count value is 1, and the second BD count value is 1;
  • the BD count value is 3, the first BD count value is 1, and the second BD count value is 2.
  • the search space identifier of the i-th search space is smaller than the search space identifier of the j-th search space.
  • the second determining unit is configured to:
  • the search is determined based on the number of candidate PDCCHs, the number of non-overlapping CCEs, the first BD count value, the second BD count value, and the blind detection capability of the terminal.
  • the second determining unit is specifically configured to:
  • the pth detection number is the candidate in the first p search spaces
  • the total number of detection times of the PDCCH, the first p search spaces perform PDCCH transmission in the same time unit, and p is a positive integer
  • the ascending order of search space identification based on the number of non-overlapping CCEs, determine the qth total number of non-overlapping CCEs, the qth total number of non-overlapping CCEs is the total number of non-overlapping CCEs in the first q search spaces, and the first q search
  • the space performs PDCCH transmission in the same time unit, and q is a positive integer;
  • An intersection of the first candidate search space and the second candidate search space is determined as the target search space.
  • the determining module 1110 further includes a third determining unit, configured to:
  • the search space identifier of the k-th search space is smaller than the search space identifier of the i-th search space.
  • the determining module 1110 further includes a fourth determining unit, configured to:
  • the target candidate PDCCH in the i-th search space uses the same CCE, scrambling identifier, and DCI format as the candidate PDCCH in the k-th search space, it is determined that the target candidate PDCCH is not included in the calculation of the number of PDCCH detections.
  • the determining module 1110 further includes:
  • a fifth determining unit configured to determine an associated candidate PDCCH associated with the target candidate PDCCH in the jth search space
  • the sixth determining unit is configured to determine that the associated candidate PDCCH is not included in the total number of candidate PDCCH blind detection times in response to the associated candidate PDCCH using the same CCE, scrambling identifier, and DCI format as the candidate PDCCH in the first search space,
  • the search space identifier of the lth search space is smaller than the search space identifier of the jth search space;
  • the seventh determination unit is configured to determine that the associated candidate PDCCH is included in the calculation of the number of PDCCH detections in response to the fact that there is no candidate PDCCH using the same CCE, scrambling identifier, and DCI format as the associated candidate PDCCH in the first search space, And the BD count value of the associated candidate PDCCH is 1.
  • the target search space includes the associated search space at the same time, or does not include the associated search space at the same time;
  • the determining module 1110 includes:
  • An eighth determining unit configured to determine the number of candidate PDCCHs in each search space in the search space set, and the number of non-overlapping CCEs in each search space;
  • a ninth determining unit configured to determine the target search space in the set of search spaces based on the number of candidate PDCCHs, the number of non-overlapping CCEs, the BD count value, and the blind detection capability of the terminal.
  • the ninth determining unit is configured to:
  • the xth detection number is the total number of detections of the candidate PDCCHs in the search space corresponding to the previous x priorities
  • the search spaces corresponding to the first x priorities perform PDCCH transmission in the same time unit, and the search spaces corresponding to the first x priorities include the associated search space at the same time, or do not include the associated search space at the same time, and x is positive integer;
  • the yth total number of non-overlapping CCEs is the total number of non-overlapping CCEs in the search space corresponding to the previous y priority
  • the The search spaces corresponding to the first y priorities perform PDCCH transmission in the same time unit, and the search spaces corresponding to the first y priorities include the associated search space at the same time, or do not include the associated search space at the same time, and y is a positive integer;
  • the search space corresponding to the first y-1 priorities is determined as a second candidate search space
  • An intersection of the first candidate search space and the second candidate search space is determined as the target search space.
  • the i-th search space and the j-th search space have the same priority
  • the priority of the jth search space is set to the priority of the ith search space
  • the priority of the i-th search space is set as the priority of the j-th search space.
  • the determining module 1110 further includes a tenth determining unit, configured to:
  • the search space identifier of the kth search space is smaller than the search space identifier of the associated search space.
  • the determining module 1110 further includes an eleventh determining unit, configured to:
  • the i th search space is used for PDCCH transmission in a first time unit
  • the j th search space is used for PDCCH transmission in a second time unit
  • the first time The unit is different from the second time unit.
  • the second determining unit is configured to:
  • the second determining unit is configured to:
  • the blind detection capability of the terminal Based on the second BD count value, the blind detection capability of the terminal, and the first target search space, determine a second target search space corresponding to the second time unit in the search space set.
  • the second determining unit is specifically configured to:
  • the associated search spaces respectively correspond to different CORESETs, and under the same aggregation level, candidate PDCCHs with the same index in the associated search spaces are used to transmit the same DCI, and the DCI is used to call the same physical channel.
  • the BD count value is reported to the network device when the terminal device performs PDCCH repeated transmission, or the BD count value is a default value, or the BD count value is determined by the network
  • the device selects and configures multiple candidate BD count values reported by the terminal device.
  • the associated search space is configured through high-layer signaling or physical layer signaling.
  • the blind detection capability of the terminal includes: an upper limit of the number of PDCCH detections within a time unit, and/or an upper limit of the number of non-overlapping CCEs.
  • the apparatus further includes: a blind detection module, configured to perform PDCCH blind detection on the target search space.
  • the apparatus further includes: a scheduling module, configured to perform terminal scheduling on the candidate PDCCH in the target search space.
  • the configured search space set can exceed the upper limit of the blind detection capability of the terminal device, and when the search space set includes the associated search space for PDCCH repeated transmission, the PDCCH The BD count value used for repeated transmissions can be greater than or equal to 2. Therefore, terminal devices and network devices need to clarify how the BD count value is applied to the associated search space, and determine the target that meets the blind detection capability of the terminal from the search space based on the BD count value. Search space, so that the network device can perform terminal scheduling in the target search space, and the terminal device can perform PDCCH blind detection in the target search space, so as to ensure the blind detection success rate of the terminal device.
  • the device provided by the above embodiment realizes its functions, it only uses the division of the above-mentioned functional modules as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • FIG. 12 shows a schematic structural diagram of a communication device provided by an embodiment of the present application, and the communication device may implement the terminal device or network device in the foregoing embodiments.
  • the communication device may include: a processor 1201 , a receiver 1202 , a transmitter 1203 , a memory 1204 and a bus 1205 .
  • the processor 1201 includes one or more processing cores, and the processor 1201 executes various functional applications and information processing by running software programs and modules.
  • the receiver 1202 and the transmitter 1203 can be implemented as a transceiver, and the transceiver can be a communication chip.
  • the memory 1204 is connected to the processor 1201 through the bus 1205 .
  • the memory 1204 may be used to store a computer program, and the processor 1201 is used to execute the computer program, so as to implement various steps performed by the terminal device or the network device in the foregoing method embodiments.
  • the memory 1204 can be realized by any type of volatile or nonvolatile storage device or their combination, and the volatile or nonvolatile storage device includes but not limited to: RAM (Random-Access Memory, Random Access Memory) And ROM (Read-Only Memory, read-only memory), EPROM (Erasable Programmable Read-Only Memory, erasable programmable read-only memory), EEPROM (Electrically Erasable Programmable Read-Only Memory, electrically erasable programmable read-only memory memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory, CD-ROM), DVD (Digital Video Disc, high-density digital video disc) or other optical storage, tape cartridges, tapes, disks storage or other magnetic storage devices.
  • RAM Random-Access Memory
  • ROM Read-Only Memory
  • EPROM Erasable Programmable Read-Only Memory, erasable programmable read-only memory
  • EEPROM Electrically Erasable Programmable Read-Only
  • the processor and the transceiver involved in the embodiments of the present application may execute the methods for determining the search space provided in the foregoing embodiments, which will not be repeated here.
  • the processor 1201 is configured to determine a target search space in the search space set based on a BD count value and a terminal blind detection capability, where the BD count value is used when the terminal device performs PDCCH repeated transmission, and the The BD count value is an integer greater than or equal to 2, the set of search spaces includes an associated search space, and the associated search space is used for repeated transmission of the PDCCH.
  • the processor 1201 is further configured to perform PDCCH blind detection on the target search space.
  • the processor 1201 is further configured to perform terminal scheduling on the candidate PDCCH in the target search space.
  • the embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a terminal device or a network device, so as to realize the above method for determining a search space .
  • the computer-readable storage medium may include: ROM (Read-Only Memory, read-only memory), RAM (Random-Access Memory, random access memory), SSD (Solid State Drives, solid state drive) or an optical disc, etc.
  • the random access memory may include ReRAM (Resistance Random Access Memory, resistive random access memory) and DRAM (Dynamic Random Access Memory, dynamic random access memory).
  • An embodiment of the present application further provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip is run on a terminal device, it is used to implement the above method for determining a search space.
  • the embodiment of the present application also provides a computer program product or computer program, the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processor of the terminal device or network device obtains from The computer-readable storage medium reads and executes the computer instructions, so as to realize the above method for determining the search space.
  • the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
  • the "plurality” mentioned herein means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently.
  • the character “/” generally indicates that the associated objects are an "or” relationship.
  • the numbering of the steps described herein only exemplarily shows a possible sequence of execution among the steps.
  • the above-mentioned steps may not be executed according to the order of the numbers, such as two different numbers
  • the steps are executed at the same time, or two steps with different numbers are executed in the reverse order as shown in the illustration, which is not limited in this embodiment of the present application.
  • the functions described in the embodiments of the present application may be implemented by hardware, software, firmware or any combination thereof.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage media may be any available media that can be accessed by a general purpose or special purpose computer.

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Abstract

本申请公开了一种搜索空间的确定方法、装置、设备及存储介质,涉及通信技术领域。包括:基于BD count值和终端盲检能力确定搜索空间集中的目标搜索空间,BD count值在终端设备进行PDCCH重复传输时使用,BD count值为大于等于2的整数,搜索空间集中包含关联搜索空间,且关联搜索空间用于PDCCH重复传输。本申请实施例提供中,在BD count大于等于2的情况下,终端设备和网络设备能够明确BD count值应用到关联搜索空间的方式,并从搜索空间集中确定出统一的目标搜索空间,以便网络设备在目标搜索空间上进行终端调度,终端设备在目标搜索空间进行PDCCH盲检,保证终端设备的盲检成功率。

Description

搜索空间的确定方法、装置、设备及存储介质
本申请要求于2021年08月06日提交的申请号为PCT/CN2021/111319、发明名称为“搜索空间的确定方法、装置、设备及存储介质”的PCT申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术领域,特别涉及一种搜索空间的确定方法、装置、设备及存储介质。
背景技术
搜索空间(Search Space)是特定聚合等级(Aggregation Level,AL)下候选物理下行控制信道(Physical Downlink Control CHannel,PDCCH)的集合。
PDCCH盲检过程中,终端设备从网络设备配置的一组搜索空间中确定出符合自身盲检能力的若干搜索空间,从而对该搜索空间中的候选PDCCH进行盲检。相应的,为了确保终端设备盲检成功,网络设备需要基于终端盲检能力,将调度信息承载在终端盲检能力范围内搜索空间中的候选PDCCH上。
发明内容
本申请实施例提供了一种搜索空间的确定方法、装置、设备及存储介质。所述技术方案如下:
一方面,本申请实施例提供了一种搜索空间的确定方法,所述方法包括:
基于盲检次数(Blind Decode count,BD count)值和终端盲检能力确定搜索空间集中的目标搜索空间,所述BD count值在终端设备进行PDCCH重复传输时使用,所述BD count值为大于等于2的整数,所述搜索空间集中包含关联搜索空间,且所述关联搜索空间用于PDCCH重复传输。
另一方面,本申请实施例提供了一种搜索空间的确定装置,所述装置包括:
确定模块,用于基于BD count值和终端盲检能力确定搜索空间集中的目标搜索空间,所述BD count值在终端设备进行PDCCH重复传输时使用,所述BD count值为大于等于2的整数,所述搜索空间集中包含关联搜索空间,且所述关联搜索空间用于PDCCH重复传输。
另一方面,本申请实施例提供了一种终端设备,所述终端设备包括处理器和收发器;
所述处理器,用于基于BD count值和终端盲检能力确定搜索空间集中的目标搜索空间,所述BD count值在终端设备进行PDCCH重复传输时使用,所述BD count值为大于等于2的整数,所述搜索空间集中包含关联搜索空间,且所述关联搜索空间用于PDCCH重复传输。
另一方面,本申请实施例提供了一种网络设备,所述网络设备包括处理器和收发器;
所述处理器,用于基于BD count值和终端盲检能力确定搜索空间集中的目标搜索空间,所述BD count值在终端设备进行PDCCH重复传输时使用,所述BD count值为大于等于2的整数,所述搜索空间集中包含关联搜索空间,且所述关联搜索空间用于PDCCH重复传输。
另一方面,本申请实施例提供了一种计算机可读存储介质,所述存储介质中存储有计算机程序,所述计算机程序用于处理器执行,以实现上述搜索空间的确定方法。
根据本申请实施例的一个方面,提供了一种芯片,所述芯片包括可编程逻辑电路和/或程序指令,当所述芯片运行时,用于实现上述搜索空间的确定方法。
根据本申请实施例的一个方面,提供了一种计算机程序产品或计算机程序,所述计算机程序产品或计算机程序包括计算机指令,所述计算机指令存储在计算机可读存储介质中,处理器从所述计算机可读存储介质读取并执行所述计算机指令,以实现上述搜索空间的确定方法。
本申请实施例提供的技术方案中,由于配置的搜索空间集可以超过终端设备的盲检能力上限,且当搜索空间集中包含用于PDCCH重复传输的关联搜索空间时,进行PDCCH重复传输时使用的BD count值可以大于等于2,因此终端设备和网络设备需要明确BD count值应用到关联搜索空间的方式,并基于BD count值从搜索空间集中确定出符合终端盲检能力的目标搜索空间,以便网络设备在目标搜索空间上进行终端调度,终端设备在目标搜索空间进行PDCCH盲检,保证终端设备的盲检成功率。
附图说明
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1示出了本申请一个示例性实施例提供的通信***的框图;
图2示出了本申请一个示例性实施例示出的搜索空间的确定方法的流程图;
图3示出了本申请另一个示例性实施例示出的搜索空间的确定方法的流程图;
图4是本申请一个示例性实施例示出的目标搜索空间确定过程的实施示意图;
图5是本申请一个示例性实施例示出的目标搜索空间确定过程的实施示意图;
图6是本申请一个示例性实施例输出的目标搜索空间确定过程的流程图;
图7示出了本申请另一个示例性实施例示出的搜索空间的确定方法的流程图;
图8是本申请一个示例性实施例示出的目标搜索空间确定过程的实施示意图;
图9是本申请一个示例性实施例示出的目标搜索空间确定过程的实施示意图;
图10是本申请一个示例性实施例输出的目标搜索空间确定过程的流程图;
图11示出了本申请一个实施例提供的搜索空间的确定装置的框图;
图12示出了本申请一个实施例提供的通信设备的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚,下面将结合附图对本申请实施方式作进一步地详细描述。
本申请实施例描述的网络架构以及业务场景是为了更加清楚地说明本申请实施例的技术方案,并不构成对本申请实施例提供的技术方案的限定,本领域普通技术人员可知,随着网络架构的演变和新业务场景的出现,本申请实施例提供的技术方案对于类似的技术问题,同样适用。
请参考图1,其示出了本申请一个示例性实施例提供的通信***的框图,该通信***可以包括:终端设备10和接入网设备20。
终端设备10可以指用户设备(User Equipment,UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、无线通信设备、用户代理或用户装置。可选地,终端设备10还可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digita1 Assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备,第五代移动通信***(5th Generation System,5GS)中的终端设备或者未来演进的公用陆地移动通信网络(Pub1ic Land Mobi1e Network,PLMN)中的终端设备等,本申请实施例对此并不限定。为方便描述,上面提到的设备统称为终端设备。终端设备10的数量通常为多个,每一个接入网设备20所管理的小区内可以分布一个或多个终端设备10。
网络设备是一种部署在接入网中用以为终端设备10提供无线通信功能的设备。网络设备可以包括各种形式的宏基站,微基站,中继站,接入点等等。在采用不同的无线接入技术的***中,具备网络设备功能的设备的名称可能会有所不同,例如在5G NR***中,称为gNodeB或者gNB。随着通信技术的演进,“网络设备”这一名称可能会变化。为方便描述,本申请实施例中,上述为终端设备10提供无线通信功能的装置统称为网络设备。可选地,通过网络设备,终端设备10和核心网设备之间可以建立通信关系。示例性地,在长期演进((Long Term Evolution,LTE)***中,网络设备可以是演进的通用陆地无线网(Evolved-Universal Terrestrial Radio Access Network,E-UTRAN)或者E-UTRAN中的一个或者多个eNodeB;在5G新空口(New Radio,NR)***中,网络设备可以是无线接入网(Radio Access Network,RAN)或者RAN中的一个或者多个gNB。
在一个示例中,一个网络设备可以部署有多个传输接收点(Transmission Reception Point,TRP),以实现基于多传输接收点(Multi Transmission Reception Point,MTRP)的PDCCH增强。示例性地,如图1所示,网络设备对应有TRP1、TRP2和TRP3(TRP在图1中标号为20)。其中,TRP1和TRP2对应于第一小区,TRP3对应于第二小区。
本申请实施例描述的技术方案可以适用于5G NR***,也可以适用于5G NR***后续的演进***,本申请对此不作限定。
为了方便理解,下面对本申请实施例中涉及的名词进行说明。
搜索空间集(Search Space Set):由网络侧配置的一组搜索空间(包含至少两个搜索空间),而搜索空间则是特定聚合等级(Aggregation Level,AL)下候选PDCCH(PDCCH candidate)的集合。盲检过程中,终端设备会对搜索空间内的候选PDCCH进行译码,并在校验通过时,确定所译码的候选PDCCH有效,进而利用译码所得到的信息(比如传输调度指示、时隙间隔指示、功率控制命令等)进行后续操作。
关联搜索空间:R17中引入了基于MTRP的PDCCH增强,通过关联两个搜索空间进行PDCCH重复传输(repetition)。关联搜索空间中各个聚合等级下候选PDCCH的数量相等,且关联搜索空间中相同索引(index)对应的候选PDCCH关联。比如,关联搜索空间包括搜索空间SS1和搜索空间SS2,且SS1和SS2中均包含5个候选PDCCH,且SS1中的第一个候选PDCCH与SS2中的第一个候选PDCCH关联,SS1中的第二个候选PDCCH与SS2中的第二个候选PDCCH关联,以此类推。
此外,关联搜索空间分别对应不同的控制资源集合(COntrol REsource Set,CORESET),且相同聚合 等级下,关联搜索空间中相同索引的候选PDCCH用于传输同一下行控制信息(Downlink Control Information,DCI),该DCI用于调用同一物理信道。
BD count值:用于指示候选PDCCH的盲检次数。在R15中,终端设备基于搜索空间标识的大小,对各个搜索空间进行逐一判定,且搜索空间中各个候选PDCCH的BD count值为1;而在R17中,由于引入了PDCCH重复传输,而对于用于PDCCH重复传输的关联搜索空间而言,终端设备进行PDCCH盲检时,可以分别检测关联搜索空间中两个关联的候选PDCCH,也可以对两个关联的候选PDCCH进行软合并后进行检测,因此候选PDCCH的BD count值可以大于等于2。
在LTE中,搜索空间的聚合等级、每个聚合等级内候选PDCCH的数量通过预定义或根据控制信道资源大小隐式获得,虽然LTE支持按照一定比例减少盲检的候选PDCCH数量,但是灵活性仍旧受限。而在NR中,DCI格式、聚合等级以及聚合等级对应的候选PDCCH数量,以及搜索空间在时域上的检测周期可以通过高层信令进行配置,基于这类配置信息可以灵活控制盲检的复杂度。并且,为了降低对网络侧调度器的限制,NR中网络侧配置的候选PDCCH可能超过终端设备的盲检能力上限,此时终端设备需要根据预定义机制,从配置的候选PDCCH中确定出实际检测的候选PDCCH(即从配置的候选PDCCH中确定出子集)。
由于R17中引入了PDCCH重复传输,因此如何基于已有规范,将BD count值(大于等于2)映射到关联搜索空间,以便从网络侧配置的候选PDCCH确定出实际检测的候选PDCCH成为重要的研究课题。
请参考图2,其示出了本申请一个示例性实施例示出的搜索空间的确定方法的流程图,本实施例以该方法应用于通信设备(图1所示的终端设备10或网络设备20)为例进行说明。
步骤210,基于BD count值和终端盲检能力确定搜索空间集中的目标搜索空间,BD count值在终端设备进行PDCCH重复传输时使用,BD count值为大于等于2的整数,搜索空间集中包含关联搜索空间,且关联搜索空间用于PDCCH重复传输。
在一些实施例中,该搜索空间集为网络侧配置的所有搜索空间(可能存在在不同时间单位内发送PDCCH的搜索空间),或者,该搜索空间集是网络侧配置的所有搜索空间中,在同一时间单位内发送PDCCH的搜索空间所构成的集合。其中,该时间单位可以为slot或span,且时间单位也可以被称为时间单元。
本申请实施例中,搜索空间集中包含关联搜索空间,该关联搜索空间用于实现PDCCH重复传输。其中,关联搜索空间中的两个搜索空间分别对应不同CORESET,且相同集合等级下,关联搜索空间中相同索引的候选PDCCH用于传输同一DCI,该DCI用于调用同一物理信道。在一种可能的实施方式中,该关联搜索空间通过高层信令或物理层信令配置。
在一个示例性的例子中,关联所搜空间中包括搜索空间SS2和搜索空间SS3,且SS2和SS3中均包含5个PDCCH。相同聚合等级下,SS2中索引为1的候选PDCCH,与SS3中索引为1的候选PDCCH均用于传输DCI 1,SS2中索引为2的候选PDCCH,与SS3中索引为2的候选PDCCH均用于传输DCI 2,以此类推。
当然,搜索空间集中除了包含关联搜索空间外,还以包括其他搜索空间,本申请实施例并不对搜索空间集中搜索空间的数量进行限定。
当存在关联搜索空间时,关联搜索空间中候选PDCCH的盲检次数可能大于一次,相应的,终端设备进行PDCCH重复传输时使用的BD count值可以大于等于2。在一种可能的实施方式中,对关联搜索空间中的候选PDCCH进行盲检时,终端设备除了可以对两个搜索空间中的候选PDCCH分别进行盲检,还可以对两个搜索空间中的候选PDCCH进行软合并后再进行盲检,这种情况下,终端设备采用的BD count值将不再是1。
由于搜索空间集中包含的候选PDCCH可以超过终端设备的盲检能力上限,因此终端设备需要结合自身盲检能力,从搜索空间集中筛选出部分搜索空间,相应的,在利用关联搜索空间进行PDCCH重复传输的场景下,终端设备需要确定BD count值映射到关联搜索空间的方式,从搜索空间集中确定出符合终端自身盲检能力的目标搜索空间(目标搜索空间为搜索空间集的子集)。
网络设备同样需要明确BD count值映射到关联搜索空间的方式,从而基于终端盲检能力,从搜索空间集中筛选出符合终端盲检能力的目标搜索空间,进而在目标搜索空间上发送PDCCH,避免在终端盲检能力以外的搜索空间发送PDCCH,导致终端设备盲检失败。
可选的,该终端盲检能力包括:时间单位内的PDCCH检测数上限,和/或,不重叠CCE数量上限。该时间单位可以为slot或span。相对应的,该目标搜索空间为同一时间单位内发送PDCCH的搜索空间。
可选的,BD count值用于表征关联搜索空间中各个搜索空间中候选PDCCH的盲检总次数,BD count值可以为2或者3,本申请实施例并不对BD count值的具体取值进行限定。
已有规范中,基于终端盲检能力筛选搜索空间时遵循如下准则:
1、公共搜索空间集合优先于UE专用搜索空间集合;
2、UE专用搜索空间集合内,ID编号小的搜索空间优先于ID编号大的搜索空间;
3、若将配置的UE专用搜索空间纳入UE检测的搜索空间后超过终端设备的盲检能力,这个UE专用搜索空间内的所有候选PDCCH均不进行盲检,且ID编号大于这个搜索空间的UE专用搜索空间也不进行盲检;
4、公共搜索空间集合的盲检复杂度不超过终端设备的盲检能力。
本申请实施例中,通信设备确定目标搜索空间时同样遵循上述准则。
在一些实施例中,通信设备确定出的目标搜索空间中同时包含关联搜索空间,或者,同时不包含关联搜索空间,或者,包含关联搜索空间中的一个搜索空间。
在一个示意性例子中,搜索空间集中包括SS1、SS2、SS3以及SS4,其中,SS2和SS3为关联搜索空间。通信设备基于BD count值以及终端盲检能力确定出的目标搜索空间包括SS1、SS2和SS3(同时包含关联搜索空间),或,目标搜索空间包括SS1(同时不包含关联搜索空间),或,目标搜索空间包括SS1和SS2(仅包含关联搜索空间中的一个搜索空间)。
综上所述,本申请实施例提供的技术方案中,由于配置的搜索空间集可以超过终端设备的盲检能力上限,且当搜索空间集中包含用于PDCCH重复传输的关联搜索空间时,进行PDCCH重复传输时使用的BD count值可以大于等于2,因此终端设备和网络设备需要明确BD count值应用到关联搜索空间的方式,并基于BD count值从搜索空间集中确定出符合终端盲检能力的目标搜索空间,以便网络设备在目标搜索空间上进行终端调度,终端设备在目标搜索空间进行PDCCH盲检,保证终端设备的盲检成功率。
在一些实施例中,当通信设备为网络设备时,确定出目标搜索空间后,网络设备在目标搜索空间的候选PDCCH上进行终端调度,避免出现在搜索空间集中其它搜索空间的候选PDCCH上进行终端调度时,因其它搜索空间超出终端盲检能力范围,导致盲检失败,进而导致调度失败的问题。
在一些实施例中,当通信设备为终端设备时,确定出目标搜索空间后,终端设备对目标搜索空间中的候选PDCCH进行盲检,从而在盲检成功时,基于PDCCH中译码得到的信息进行后续操作。由于网络设备和终端设备基于相同的BD count值以及终端盲检能力确定目标搜索空间,因此终端设备的盲检成功率能够得到保证。
在一种可能的实施方式中,当目标搜索空间中同时包含关联搜索空间时,终端设备基于BD count值对关联搜索空间进行盲检;当目标搜索空间中仅包含关联搜索空间中的一个搜索空间时,终端设备以BD count值为1对该搜索空间进行盲检。
为了保证终端设备和网络设备基于同一BD count值确定目标搜索空间,在一种可能的实施方式中,该BD count值由终端设备自行确定,并在进行PDCCH重复传输时上报网络设备(可以从多个配置的候选值中选择上报),以便网络设备基于BD count值控制PDCCH下发,并保证确定出的目标搜索空间的一致性。
在另一种可能的实施方式中,终端设备向网络设备上报多个候选BD count值,由网络设备从多个候选BD count值中选择并配置BD count值。比如,终端设备向网络设备上报的候选BD count值为2和3,网络设备选择并配置BD count值为3。
在其他可能的实施方式中,该BD count值为默认值,终端设备和网络设备均采用的默认值,无需终端设备进行上报,比如,BD count值默认为2。
在一种可能的实施方式中,通信设备基于BD count值和自身盲检能力确定搜索空间集中的目标搜索空间时,可以将关联搜索空间中的两个搜索空间视作独立搜索空间,分别确定各个搜索空间的盲检复杂度,相应的,确定出的目标搜索空间可以仅包含关联搜索空间中的一个搜索空间。
在另一种可能的实施方式中,通信设备可以将关联搜索空间中的两个搜索空间视作一个整体,确定关联搜索空间整体的盲检复杂度,相应的,确定出的目标搜索空间中要么同时包含关联搜索空间,要么同时不包含关联搜索空间。下面分别采用示例性实施例对上述两种确定目标搜索空间的方式进行说明。
请参考图3,其示出了本申请另一个示例性实施例示出的搜索空间的确定方法的流程图,本实施例以该方法应用于通信设备(图1所示的终端设备10或网络设备20)为例进行说明。
步骤310,确定第i搜索空间对应的第一BD count值为m,第j搜索空间对应的第二BD count值为n-m,m为小于n的正整数。
关联搜索空间为搜索空间集中的第i搜索空间和第j搜索空间,可选的,第i搜索空间的搜索空间标识与第j搜索空间的搜索空间标识连续,即i与j之差为1;或者,第i搜索空间的搜索空间标识与第j搜索空间的搜索空间标识不连续,即i与j之差大于等于2。
比如,搜索空间集中的搜索空间包括SS1、SS2、SS3和SS4,其中,关联搜索空间可以是SS2和SS3,或者,关联搜索空间可以是SS2和SS4。
在一种可能的实施方式中,从搜索空间集中确定目标搜索空间时,通信设备需要将BD count值映射到 关联搜索空间中,即将BD count值分配给第i搜索空间和第j搜索空间,其中,各个分配给第i搜索空间和第j搜索空间的BD count值之和为进行PDCCH重复传输时使用的BD count值,且各个搜索空间分配到的BD count值均大于等于1。
在一种可能的情况下,当BD count值为2时,第i搜索空间所分配到的第一BD count值为1,第j搜索空间所分配到的第二BD count值为1;当BD count值为3时,第i搜索空间所分配到的第一BD count值为1,第j搜索空间所分配到的第二BD count值为2。
可选的,搜索空间所分配到的BD count值与搜索空间标识的大小呈正相关关系,比如,当第i搜索空间的搜索空间标识小于第j搜索空间的搜索空间标识时,第一BD count值小于等于第二BD count值。
示意性的,如图4所示,搜索空间集中SS2和SS3为关联搜索空间,当BD count值为2时,SS2对应的第一BD count值为1,SS3对应的第二BD count值为1。
如图5所示,搜索空间集中SS2和SS3为关联搜索空间,当BD count值为3时,SS2对应的第一BD count值为1,SS3对应的第二BD count值为2。
步骤320,基于第一BD count值、第二BD count值和终端盲检能力确定搜索空间集中的目标搜索空间。
可选的,终端盲检能力包括单位时间内(slot或span)内候选PDCCH以及不重叠CCE(non-overlapped CCEs)的检测数。由于搜索空间中候选PDCCH的检测数与候选PDCCH的BD count值相关,因此,在一种可能的实施方式中,通信设备确定搜索空间集中各个搜索空间的候选PDCCH数量,以及各个搜索空间的不重叠CCE数量,从而基于候选PDCCH数量、不重叠CCE数量、第一BD count值、第二BD count值以及终端盲检能力,确定搜索空间集中的目标搜索空间。
示意性的,如图4和5所示,搜索空间集中搜索空间SS1包含10个候选PDCCH,且不重叠CCE数量为12个;搜索空间SS2包含5个候选PDCCH,且不重叠CCE数量为8个;搜索空间SS3包含5个候选PDCCH,且不重叠CCE数量为10个;搜索空间SS4包含6个候选PDCCH,且不重叠CCE数量为6个。
在一种可能的实施方式中,通信设备基于搜索空间集中各个搜索空间对应搜索空间标识的升序,依次确定对至少一个SS1中的PDCCH进行盲检时,所需要检测的候选PDCCH的总数,以及不重叠CCE的总数。
如图4和5所示,通信设备首先仅针对SS1计算盲检过程中候选PDCCH以及不重叠CCE的总数的检测总数,然后针对SS1和SS2,再针对SS1、SS2和SS3,最后针对SS1、SS2、SS3和SS4。
可选的,如图6所示,确定目标搜索空间的过程可以包括如下步骤。
步骤321,按照搜索空间标识的升序,基于候选PDCCH数量、第一BD count值和第二BD count值,确定第p检测数,第p检测数是前p个搜索空间中候选PDCCH的检测总次数,前p个搜索空间在同一时间单位下进行PDCCH发送,p为正整数。
由于搜索空间集中不同搜索空间发送PDCCH的时间单位可能不同,因此通信设备需要从在同一时间单位内发送PDDCH的搜索空间中确定目标搜索空间。
比如,SS1在时隙0和时隙5发送PDCCH,SS2在时隙5、时隙15和时隙20发送PDCCH,SS3在时隙10和时隙20发送PDCCH,在确定时隙5内所要盲检的搜索空间时,仅针对SS1和SS2进行计算,而在确定时隙20内所要盲检的搜索空间时,仅针对SS2和SS3进行计算。
相应的,在确定第p检测数时,前p个搜索空间在同一时间单位下进行PDCCH发送。
按照搜索空间标识的升序计算候选PDCCH的检测总次数,即按照搜索空间的优先级降序,计算候选PDCCH的检测总次数。
其中,当前p个搜索空间中包含第i搜索空间时,第i搜索空间内候选PDCCH的检测次数为候选PDCCH数量×第一BD count值;当前p个搜索空间中包含第j搜索空间时,第j搜索空间内候选PDCCH的检测次数为候选PDCCH数量×第二BD count值。
需要说明的是,关联搜索空间外其他搜索空间对应的BD count值为1。
示意性的,如图4所示,第一检测数(SS1)=10,第二检测数(SS1+SS2)=10+5×1=15,第三检测数(SS1+SS2+SS3)=10+5×1+5×1=20,第四检测数(SS1+SS2+SS3+SS4)=10+5×1+5×1+6=26;如图5所示,第一检测数=10,第二检测数=10+5×1=15,第三检测数=10+5×1+5×2=25,第四检测数=10+5×1+5×2+6=31。
步骤322,按照搜索空间标识的升序,基于不重叠CCE数量,确定第q不重叠CCE总数,第q不重叠CCE总数是前q个搜索空间中不重叠CCE的总数,前q个搜索空间在同一时间单位下进行PDCCH发送,q为正整数。
示意性的,如图4和5所示,第一不重叠CCE总数(SS1)=12,第二不重叠CCE总数(SS1+SS2) =12+8=20,第三不重叠CCE总数(SS1+SS2+SS3)=12+8+10=30,第四不重叠CCE总数(SS1+SS2+SS3+SS4)=12+8+10+6=36。
步骤323,响应于第p检测数大于PDCCH检测数上限,且第p-1检测数小于等于PDCCH检测数上限,将前p-1个搜索空间确定为第一候选搜索空间。
本实施例中,终端设备设置有PDCCH检测数上限,通信设备检测第p检测数是否大于PDCCH检测数上限,即确定对前p个搜索空间进行PDCCH检测时是否超过PDCCH检测能力上限,若第p检测数大于PDCCH检测数上限,则确定超过PDCCH检测能力上限,从而将前p-1个搜索空间确定为符合终端PDCCH检测能力的第一候选搜索空间;若第p检测数小于等于PDCCH检测数上限,则进一步检测第p+1检测数是否大于PDCCH检测数上限。
如图4所示,当终端设备的PDCCH检测数上限为20次时,由于第三检测数等于PDCCH检测数上限,且第四检测数大于PDCCH检测数上限,因此终端设备确定第一候选搜索空间包括SS1,SS2和SS3。
如图5所示,当终端设备的PDCCH检测数上限为20次时,由于第二检测数小于PDCCH检测数上限,且第三检测数大于PDCCH检测数上限,因此通信设备确定第一候选搜索空间包括SS1和SS2。
步骤324,响应于第q不重叠CCE总数大于不重叠CCE数量上限,且第q-1不重叠CCE总数小于等于不重叠CCE数量上限,将前q-1个搜索空间确定为第二候选搜索空间。
本实施例中,终端设备设置有不重叠CCE数量上限,通信设备检测第q不重叠CCE总数是否大于不重叠CCE数量上限,即确定对前q个搜索空间进行CCE检测时是否超过CCE检测能力上限,若第q不重叠CCE总数大于不重叠CCE数量上限,则确定超过CCE检测能力上限,从而将前p-1个搜索空间确定为符合终端CCE检测能力的第二候选搜索空间;若第p不重叠CCE总数小于等于不重叠CCE数量上限,则进一步检测第q+1不重叠CCE总数是否大于不重叠CCE数量上限。
如图4和5所示,当终端设备的不重叠CCE数量上限为32个时,由于第三不重叠CCE总数小于不重叠CCE数量上限,且第四检测数大于不重叠CCE数量上限,因此通信设备确定第二候选搜索空间包括SS1,SS2和SS3。
步骤325,将第一候选搜索空间与第二候选搜索空间的交集确定为目标搜索空间。
由于需要同时满足PDCCH数量以及不重叠CCE数量要求,因此通信设备将第一候选搜索空间与第二候选搜索空间的交集确定为目标搜索空间。
如图4所示,由于第一候选搜索空间为SS1、SS2和SS3,第二候选搜索空间为SS1、SS2和SS3,因此通信设备确定目标搜索空间为SS1、SS2和SS3;如图5所示,由于第一候选搜索空间为SS1和SS2,第二候选搜索空间为SS1、SS2和SS3,因此通信设备确定目标搜索空间为SS1和SS2。
采用本实施例的方案,终端设备进行PDCCH盲检时,可以仅对关联搜索空间中一个搜索空间的候选PDCCH进行盲检,也可以同时对关联搜索空间中两个搜索空间的候选PDCCH进行盲检,还可以不对关联搜索空间中任何一个搜索空间的候选PDCCH进行盲检。
上述实施例中,以第i搜索空间中的各个候选PDCCH均对应第一BD count值,第j搜索空间中的各个候选PDCCH均对应第二BD count值为例进行说明。在一种可能的情况下,当关联搜索空间中存在候选PDCCH与其它搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,且该其他搜索空间在关联搜索空间之前进行盲检时,关联搜索空间中对应的候选PDCCH可以无需盲检,即该候选PDCCH不计入BD count值。
针对上述情况,在一种可能的实施方式中,在计算PDCCH检测数前,通信设备需要检测第i搜索空间中是否存在候选PDCCH与第k搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,其中,第k搜索空间的搜索空间标识小于第i搜索空间的搜索空间标识,即第k搜索空间的盲检优先级高于第i搜索空间。
响应于第i搜索空间中不存在候选PDCCH与第k搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,通信设备确定关联搜索空间中的各个候选PDCCH均纳入PDCCH检测数计算,也即,第i搜索空间中的各个候选PDCCH均对应第一BD count值,第j搜索空间中的各个候选PDCCH均对应第二BD count值。
而当第i搜索空间中存在目标候选PDCCH与第k搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式时,通信设备确定目标候选PDCCH不纳入PDCCH检测数计算,即目标候选PDCCH对应的BD count值为0。
并且,由于第i搜索空间与第j搜索空间关联,因此通信设备需要进一步检测第j搜索空间中,与目标候选PDCCH关联的关联候选PDCCH是否与其他搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式。
在一种可能的实施方式中,通信设备确定第j搜索空间中,与目标候选PDCCH关联的关联候选 PDCCH。其中,关联候选PDCCH与目标候选PDCCH具有相同索引。比如,当第i搜索空间中的第一候选PDCCH为目标候选PDCCH时,通信设备确定第j搜索空间中的第一候选PDCCH为关联候选PDCCH。
进一步的,通信设备检测第l搜索空间中是否存在候选PDCCH与关联候选PDCCH使用相同CCE、加扰标识以及DCI格式,其中,第l搜索空间的搜索空间标识小于第j搜索空间的搜索空间标识,即第l搜索空间的盲检优先级高于第j搜索空间。
响应于关联候选PDCCH与第l搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,通信设备确定关联候选PDCCH不纳入候选PDCCH盲检总次数;
响应于第l搜索空间中不存在与关联候选PDCCH使用相同CCE、加扰标识以及DCI格式的候选PDCCH,通信设备确定关联候选PDCCH纳入PDCCH检测数计算,并确定关联候选PDCCH的BD count值为1。
在一个示意性的例子中,搜索空间集中包含SS1(候选PDCCH数量为10)、SS2(候选PDCCH数量为5)、SS3(候选PDCCH数量为6)和SS4(候选PDCCH数量为5),其中,SS2和SS4为关联搜索空间。由于SS2中第一候选PDCCH与SS1中的第二候选PDCCH使用相同CCE、加扰标识以及DCI格式,因此通信设备确定SS2中第一候选PDCCH不纳入PDCCH检测数计算;进一步,由于SS1和SS3中均不存在与SS4中第一候选PDCCH使用相同CCE、加扰标识以及DCI格式的候选PDCCH,因此通信设备确定SS4中第一候选PDCCH纳入PDCCH检测数计算。
比如,当SS2对应的BD count值为1,且SS4对应的BD count值为1时,计算得到第二检测数为10+4=14,计算得到第四检测数为10+4+6+5=25。
请参考图7,其示出了本申请另一个示例性实施例示出的搜索空间的确定方法的流程图,本实施例以该方法应用于通信设备(图1所示的终端设备10或网络设备20)为例进行说明。
步骤710,确定搜索空间集中各个搜索空间的候选PDCCH数量,以及各个搜索空间的不重叠CCE数量。
示意性的,如图8和9所示,搜索空间集中搜索空间SS1包含10个候选PDCCH,且不重叠CCE数量为12个;搜索空间SS2包含5个候选PDCCH,且不重叠CCE数量为8个;搜索空间SS3包含5个候选PDCCH,且不重叠CCE数量为10个;搜索空间SS4包含6个候选PDCCH,且不重叠CCE数量为6个。
步骤720,基于候选PDCCH数量、不重叠CCE数量、BD count值以及终端盲检能力,确定搜索空间集中的目标搜索空间。
将关联的两个搜索空间作为整体时,确定出的目标搜索空间要么同时包含关联搜索空间,要么同时不包含关联搜索空间,相应的,在确定符合终端盲检能力的目标搜索空间时,并非将BD count值分别映射到第i搜索空间和第j搜索空间(即无需确定第一BD count值和第二BD count值),而是将BD count值映射到整个关联搜索空间。
可选的,终通信设备基于候选PDCCH数量和BD count值进行PDCCH检测数计算,基于不重叠CCE数量进行不重叠CCE总数计算,从而基于计算结果和终端盲检能力,确定出目标搜索空间。
可选的,如图10所示,确定目标搜索空间的过程可以包括如下步骤。
步骤721,按照搜索空间的优先级降序,基于候选PDCCH数量以及BD count值,确定第x检测数,第x检测数是前x个优先级对应搜索空间中候选PDCCH的检测总次数,前x个优先级对应搜索空间在同一时间单位下进行PDCCH发送,且前x个优先级对应搜索空间中同时包含关联搜索空间,或同时不包含关联搜索空间,x为正整数。
搜索空间集中,默认情况下,搜索空间的优先级与其搜索空间标识呈负相关关系,即搜索空间标识越小,搜索空间的优先级越高。比如,搜索空间集中,搜索空间的优先级为SS1>SS2>SS3>SS4。
当关联搜索空间作为整体时,关联搜索空间中的两个搜索空间需要同时进行PDCCH检测数计算。当关联搜索空间的搜索空间标识不相邻,即第i搜索空间与第j搜索空间之间存在其他搜索空间时,为了保证关联搜索空间中的两个搜索空间同时进行PDCCH检测数计算,通信设备需要将第i搜索空间与第j搜索空间设置为相同优先级,以便后续基于搜索空间的优先级计算PDCCH检测数时,能够跳过第i搜索空间与第j搜索空间之间的其他搜索空间,并对第i搜索空间和第j搜索空间进行同时计算。
在一种可能的实施方式中,第i搜索空间与第j搜索空间的优先级相同时,第j搜索空间的优先级被设置为第i搜索空间的优先级;或,第i搜索空间的优先级被设置为第j搜索空间的优先级。换句话说,关联搜索空间中两个搜索空间的优先级,可以是搜索空间标识较小的搜索空间的优先级,也可以是搜索空间标识较大的搜索空间的优先级。
在一个示意性的例子中,若搜索空间集{SS1,SS2,SS3,SS4}中SS2和SS4为关联搜索空间,则SS4的优先级被设置为SS2的优先级,此时搜索空间集中搜索空间的优先级为SS1>SS2=SS4>SS3;或者, SS2的优先级被设置为SS4的优先级,此时搜索空间集中搜索空间的优先级为SS1>SS3>SS2=SS4。
进一步的,通信设备在计算候选PDCCH的检测总次数时,若前x个优先级对应搜索空间中同时包含关联搜索空间,关联搜索空间对应的候选PDCCH的检测总次数即为候选PDCCH数量×BD count值。
示意性的,如图8所示,搜索空间集{SS1,SS2,SS3,SS4}中SS2和SS3为关联搜索空间,且BD count值为2,计算得到第一检测数(SS1)=10,第二检测数(SS1+SS2+SS3)=10+5×2=20,第三检测数(SS1+SS2+SS3+SS4)=10+5×2+6=26;如图5所示,搜索空间集{SS1,SS2,SS3,SS4}中SS2和SS3为关联搜索空间,且BD count值为3,计算得到第一检测数=10,第二检测数=10+5×3=25,第三检测数=10+5×3+6=31。
在其他可能的实施例中,若SS2和SS4为关联搜索空间,且SS4的优先级被设置为SS2的优先级,则第一检测数为SS1中候选PDDCH的检测总次数,第二检测数为SS1、SS2以及SS4中候选PDDCH的检测总次数,第三检测数为SS1、SS2、SS4以及SS3中候选PDDCH的检测总次数;若SS2和SS4为关联搜索空间,且SS2的优先级被设置为SS4的优先级,则第一检测数为SS1中候选PDDCH的检测总次数,第二检测数为SS1、SS3中候选PDDCH的检测总次数,第三检测数为SS1、SS3、SS2以及SS4中候选PDDCH的检测总次数。
步骤722,按照搜索空间的优先级降序,基于不重叠CCE数量,确定第y不重叠CCE总数,第y不重叠CCE总数是前y个优先级对应搜索空间中不重叠CCE的总数,前y个优先级对应搜索空间在同一时间单位下进行PDCCH发送,且前y个优先级对应搜索空间中同时包含关联搜索空间,或同时不包含关联搜索空间,y为正整数。
与上述步骤中计算候选PDCCH的检测总次数类似的,通信设备基于各个搜索空间中不重叠CCE数量,按照搜索空间的优先级降序计算搜索空间中不重叠CCE的总数。其中,关联搜索空间对应的不重叠CCE数量同时纳入计算,或同时不纳入计算。
示意性的,如图8和9所示,第一不重叠CCE总数(SS1)=12,第二不重叠CCE总数(SS1+SS2+SS3)=12+8+10=30,第三不重叠CCE总数(SS1+SS2+SS3+SS4)=12+8+10+6=36。
在其他可能的实施例中,若SS2和SS4为关联搜索空间,且SS4的优先级被设置为SS2的优先级,则第一不重叠CCE总数为SS1中不重叠CCE数量,第二不重叠CCE总数为SS1、SS2以及SS4中不重叠CCE数量之和,第三不重叠CCE总数为SS1、SS2、SS4以及SS3中不重叠CCE数量之和;若SS2和SS4为关联搜索空间,且SS2的优先级被设置为SS4的优先级,则第一不重叠CCE总数为SS1中不重叠CCE数量,第二不重叠CCE总数为SS1、SS3中不重叠CCE数量之和,第三不重叠CCE总数为SS1、SS3、SS2以及SS4中不重叠CCE数量。
步骤723,响应于第x检测数大于PDCCH检测数上限,且第x-1检测数小于等于PDCCH检测数上限,将前x-1个优先级对应的搜索空间确定为第一候选搜索空间。
本实施例中,终端设备设置有PDCCH检测数上限,通信设备检测第x检测数是否大于PDCCH检测数上限,即确定对前x个优先级的搜索空间进行PDCCH检测时是否超过PDCCH检测能力上限,若第x检测数大于PDCCH检测数上限,则确定超过PDCCH检测能力上限,从而将前x-1个优先级的搜索空间确定为符合终端PDCCH检测能力的第一候选搜索空间;若第x检测数小于等于PDCCH检测数上限,则进一步检测第x+1检测数是否大于PDCCH检测数上限。其中,前x个优先级的搜索空间与前x-1个优先级的搜索空间的搜索空间数量之差可能为1(第x优先级的搜索空间不属于关联搜索空间时)或2(第x优先级的搜索空间属于关联搜索空间时)。
如图8所示,当终端设备的PDCCH检测数上限为20次时,由于第二检测数等于PDCCH检测数上限,且第三检测数大于PDCCH检测数上限,因此通信设备确定第一候选搜索空间包括SS1,SS2和SS3。
如图5所示,当终端设备的PDCCH检测数上限为20次时,由于第一检测数小于PDCCH检测数上限,且第二检测数大于PDCCH检测数上限,因此通信设备确定第一候选搜索空间包括SS1。
步骤724,响应于第y不重叠CCE总数大于不重叠CCE数量上限,且第y-1不重叠CCE总数小于等于不重叠CCE数量上限,将前y-1个优先级对应的搜索空间确定为第二候选搜索空间。
本实施例中,终端设备设置有不重叠CCE数量上限,通信设备检测第y不重叠CCE总数是否大于不重叠CCE数量上限,即确定对前y个优先级的搜索空间进行CCE检测时是否超过CCE检测能力上限,若第y不重叠CCE总数大于不重叠CCE数量上限,则确定超过CCE检测能力上限,从而将前y-1个优先级的搜索空间确定为符合终端CCE检测能力的第二候选搜索空间;若第y不重叠CCE总数小于等于不重叠CCE数量上限,则进一步检测第q+1不重叠CCE总数是否大于不重叠CCE数量上限。
如图8和9所示,当终端设备的不重叠CCE数量上限为32个时,由于第二不重叠CCE总数小于不重叠CCE数量上限,且第三检测数大于不重叠CCE数量上限,因此通信设备确定第二候选搜索空间包括SS1,SS2和SS3。
步骤725,将第一候选搜索空间与第二候选搜索空间的交集确定为目标搜索空间。
由于需要同时满足PDCCH数量以及不重叠CCE数量要求,因此通信设备将第一候选搜索空间与第二候选搜索空间的交集确定为目标搜索空间。
如图8所示,由于第一候选搜索空间为SS1、SS2和SS3,第二候选搜索空间为SS1、SS2和SS3,因此通信设备确定目标搜索空间为SS1、SS2和SS3;如图9所示,由于第一候选搜索空间为SS1,第二候选搜索空间为SS1、SS2和SS3,因此通信设备确定目标搜索空间为SS1。
采用本实施例的方案,终端设备进行PDCCH盲检时,要么同时对关联搜索空间中两个搜索空间的候选PDCCH进行盲检,要么不对关联搜索空间中任何一个搜索空间的候选PDCCH进行盲检。
在一种可能的情况下,当关联搜索空间作为一个整体,且关联搜索空间中存在候选PDCCH与其它搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,且该其他搜索空间在关联搜索空间之前进行盲检时,关联搜索空间中对应的候选PDCCH可以无需盲检,即该候选PDCCH不计入BD count值。
针对上述情况,在一种可能的实施方式中,在计算PDCCH检测数前,通信设备检测关联搜索空间中是否存在候选PDCCH与第k搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式。其中,第k搜索空间的搜索空间标识小于关联搜索空间的搜索空间标识,即第k搜索空间的盲检优先级高于关联搜索空间。
响应于关联搜索空间中不存在候选PDCCH与第k搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,通信设备确定关联搜索空间中的各个候选PDCCH均纳入PDCCH检测数计算。
而当关联搜索空间中存在目标候选PDCCH与第l搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式时,通信设备确定目标候选PDCCH以及目标候选PDCCH对应的关联候选PDCCH均不纳入PDCCH检测数计算。
比如,当第i搜索空间中存在一个目标候选PDCCH与第l搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式时,通信设备确定目标候选PDCCH,以及第j搜索空间中与目标候选PDCCH具有相同索引的候选PDCCH均不纳入PDCCH检测,相应的,计算PDCCH检测数时,关联搜索空间对应的候选PDCCH数量减一。
在一个示意性的例子中,搜索空间集中包含SS1(候选PDCCH数量为10)、SS2(候选PDCCH数量为5)、SS3(候选PDCCH数量为5)和SS4(候选PDCCH数量为6),其中,SS2和SS3为关联搜索空间。由于SS2中第一候选PDCCH与SS1中的第二候选PDCCH使用相同CCE、加扰标识以及DCI格式,因此终端设备确定SS2中第一候选PDCCH以及SS3中第一候选PDCCH不纳入PDCCH检测数计算。比如,当关联搜索空间对应的BD count值为2,关联搜索空间的PDCCH检测数即为(5-1)×2=8。
上述实施例中,以第i搜索空间和第j搜索空间在同一时间单位下进行PDCCH发送为例进行说明,在另一种可能的场景下,网络侧为关联搜索空间配置的用于PDCCH重复传输的检测时刻不在同一时间单位上,即关联的第i搜索空间和第j搜索空间可能在不同的时间单位下进行PDCCH发送。示意性的,第i搜索空间用于在第一时间单位(比如第一slot)下进行PDCCH发送,而第j搜索空间用于在第二时间单位(比如第二slot)下进行PDCCH发送。
相应的,通信设备从搜索空间集中的目标搜索空间时,需要确定出第一时间单位对应的第一目标搜索空间,以及第二时间单位对应的第二目标搜索空间。在一种可能的实施方式,通信设备确定目标搜索空间时可以包括如下步骤:
1、基于第一BD count值和终端盲检能力,确定搜索空间集中第一时间单位对应的第一目标搜索空间。
可选的,终端盲检能力包括单位时间内(slot或span)内候选PDCCH以及不重叠CCE的检测数。由于搜索空间中候选PDCCH的检测数与候选PDCCH的BD count值相关,因此,在一种可能的实施方式中,通信设备确定搜索空间集中第一时间单位对应的各个搜索空间的候选PDCCH数量,以及各个搜索空间的不重叠CCE数量,从而基于候选PDCCH数量、不重叠CCE数量、第i搜索空间对应的第一BD count值以及终端盲检能力,确定第一目标搜索空间(终端能够在第一时间单位内完成对第一目标搜索空间中各个搜索空间的盲检)。
其中,确定第一目标搜索空间的具体过程可以参考上述实施例,本实施例在此不作赘述。
在一个示意性的例子中,搜索空间集{SS1,SS2,SS3,SS4,SS5,SS6}中,SS1、SS2和SS3对应第一时间单位,SS4、SS5和SS6对应第二时间单位,且SS2和SS5为关联搜索空间。当BD count值为3时,通信设备确定SS2对应的第一BD count值为1,SS5对应的第二BD count值为2。基于SS1、SS2以及SS3各自的候选PDCCH数量、不重叠CCE数量、第一BD count值1以及终端盲检能力,通信设备确定第一目标搜索空间包括SS1和SS2。
2、基于第二BD count值和终端盲检能力,确定搜索空间集中第二时间单位对应的第二目标搜索空间。
与确定第一目标搜索空间过程类似的,通信设备确定搜索空间集中第二时间单位对应的各个搜索空间的候选PDCCH数量,以及各个搜索空间的不重叠CCE数量,从而基于候选PDCCH数量、不重叠CCE数量、第j搜索空间对应的第二BD count值以及终端盲检能力,确定第二目标搜索空间(终端能够在第二时间单位内完成对第二目标搜索空间中各个搜索空间的盲检)。
其中,确定第二目标搜索空间的具体过程可以参考上述实施例,本实施例在此不作赘述。
在一个示意性的例子中,搜索空间集{SS1,SS2,SS3,SS4,SS5,SS6}中,SS1、SS2和SS3对应第一时间单位,SS4、SS5和SS6对应第二时间单位,且SS2和SS5为关联搜索空间。当BD count值为3时,通信设备确定SS2对应的第一BD count值为1,SS5对应的第二BD count值为2。基于SS4、SS5以及SS6各自的候选PDCCH数量、不重叠CCE数量、第二BD count值2以及终端盲检能力,通信设备确定第二目标搜索空间包括SS4。
在一些实施例中,由于终端进行PDCCH盲检时,除了分别检测关联搜索空间中两个关联的候选PDCCH外,还可以对两个关联的候选PDCCH进行软合并后进行检测,因此通信设备需要结合第一时间单位对应第一目标搜索空间中第i搜索空间的包含情况,确定第二时间单位对应的第二目标搜索空间。在另一种可能的实施方式,通信设备确定目标搜索空间时可以包括如下步骤:
1、基于第一BD count值和终端盲检能力,确定搜索空间集中第一时间单位对应的第一目标搜索空间。
本步骤的实施方式可以参考上述实施例,本实施例在此不作赘述。
2、基于第二BD count值、终端盲检能力以及第一目标搜索空间,确定搜索空间集中第二时间单位对应的第二目标搜索空间。
不同于上述实施例中,不论第一目标搜索空间中是否包含第i搜索空间,第j搜索空间对应的第二BD count值均为2(BD coun值为3的情况下),本实施例中,通信设备需要根据第一目标搜索空间是否包含第i搜索空间,动态确定第j搜索空间对应的第二BD count值,进而根据动态确定出的第二BD count值确定第二目标搜索空间。
在一种可能的实施方式中,响应于第一目标搜索空间中包含第i搜索空间,通信设备基于第二BD count值和终端盲检能力,确定搜索空间集中第二时间单位对应的第二目标搜索空间。
响应于第一目标搜索空间中不包含第i搜索空间,由于第一时间单位内第i搜索空间被忽略,因此无法在第二时间单位内对第i搜索空间和第j搜索空间进行软合并检测,进而通信设备将第二BD count值更新为1。确定第二目标搜索空间时,通信设备基于更新后的第二BD count值和终端盲检能力,确定搜索空间集中第二时间单位对应的第二目标搜索空间。
在一个示意性的例子中,搜索空间集{SS1,SS2,SS3,SS4,SS5,SS6}中,SS1、SS2和SS3对应第一时间单位,SS4、SS5和SS6对应第二时间单位,且SS2和SS5为关联搜索空间。当BD count值为3时,通信设备初始确定SS2对应的第一BD count值为1,SS5对应的第二BD count值为2。
基于SS1、SS2以及SS3各自的候选PDCCH数量、不重叠CCE数量、第一BD count值1以及终端盲检能力,通信设备确定第一目标搜索空间包括SS1和SS2。在确定第二目标搜索空间时,由于SS5的关联搜索空间SS2位于第一目标搜索空间,因此通信设备基于SS4、SS5以及SS6各自的候选PDCCH数量、不重叠CCE数量、第二BD count值2以及终端盲检能力,通信设备确定第二目标搜索空间包括SS4。
基于SS1、SS2以及SS3各自的候选PDCCH数量、不重叠CCE数量、第一BD count值1以及终端盲检能力,通信设备确定第一目标搜索空间包括SS1。在确定第二目标搜索空间时,由于SS5的关联搜索空间SS2不属于第一目标搜索空间,因此通信设备基于SS4、SS5以及SS6各自的候选PDCCH数量、不重叠CCE数量、更新后的第二BD count值1以及终端盲检能力,通信设备确定第二目标搜索空间包括SS4和SS5。
可以理解的是,上述方法实施例可以单独实施,也可以组合实施,本申请对此不加以限制。
下述为本申请装置实施例,可以用于执行本申请方法实施例。对于本申请装置实施例中未披露的细节,请参照本申请方法实施例。
请参考图11,其示出了本申请一个实施例提供的搜索空间的确定装置的框图。该装置具有实现上述方法示例的功能,所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。该装置可以包括:
确定模块1110,用于基于BD count值和终端盲检能力确定搜索空间集中的目标搜索空间,所述BD count值在终端设备进行PDCCH重复传输时使用,所述BD count值为大于等于2的整数,所述搜索空间集中包含关联搜索空间,且所述关联搜索空间用于PDCCH重复传输。
在一种可能的实施方式中,所述关联搜索空间为所述搜索空间集中的第i搜索空间和第j搜索空间,i和j为正整数;
所述第i搜索空间和第j搜索空间的搜索空间标识连续,或,所述第i搜索空间和第j搜索空间的搜索空间标识不连续。
在一种可能的实施方式中,所述BD count值为n;
所述确定模块1110,包括:
第一确定单元,用于确定所述第i搜索空间对应的第一BD count值为m,所述第j搜索空间对应的第二BD count值为n-m,m为小于n的正整数;
第二确定单元,用于基于所述第一BD count值、所述第二BD count值和所述终端盲检能力确定所述搜索空间集中的所述目标搜索空间。
在一种可能的实施方式中,所述BD count值为2,所述第一BD count值为1,所述第二BD count值为1;
所述BD count值为3,所述第一BD count值为1,所述第二BD count值为2。
在一种可能的实施方式中,所述第i搜索空间的搜索空间标识小于所述第j搜索空间的搜索空间标识。
在一种可能的实施方式中,所述第二确定单元,用于:
确定所述搜索空间集中各个搜索空间的候选PDCCH数量,以及各个搜索空间的不重叠CCE数量;
基于所述候选PDCCH数量、所述不重叠CCE数量、所述第一BD count值、所述第二BD count值以及所述终端盲检能力,确定所述搜索空间集中的所述目标搜索空间。
在一种可能的实施方式中,基于所述候选PDCCH数量、所述不重叠CCE数量、所述第一BD count值、所述第二BD count值以及所述终端盲检能力,确定所述搜索空间集中的所述目标搜索空间时,所述第二确定单元,具体用于:
按照搜索空间标识的升序,基于所述候选PDCCH数量、所述第一BD count值和所述第二BD count值,确定第p检测数,所述第p检测数是前p个搜索空间中候选PDCCH的检测总次数,所述前p个搜索空间在同一时间单位下进行PDCCH发送,p为正整数;
按照搜索空间标识的升序,基于所述不重叠CCE数量,确定第q不重叠CCE总数,所述第q不重叠CCE总数是前q个搜索空间中不重叠CCE的总数,所述前q个搜索空间在同一时间单位下进行PDCCH发送,q为正整数;
响应于所述第p检测数大于PDCCH检测数上限,且第p-1检测数小于等于所述PDCCH检测数上限,将前p-1个搜索空间确定为第一候选搜索空间;
响应于所述第q不重叠CCE总数大于不重叠CCE数量上限,且第q-1不重叠CCE总数小于等于所述不重叠CCE数量上限,将前q-1个搜索空间确定为第二候选搜索空间;
将所述第一候选搜索空间与所述第二候选搜索空间的交集确定为所述目标搜索空间。
在一种可能的实施方式中,所述确定模块1110还包括第三确定单元,用于:
响应于所述第i搜索空间中不存在候选PDCCH与第k搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,确定所述关联搜索空间中的各个所述候选PDCCH纳入PDCCH检测数计算,所述第k搜索空间的搜索空间标识小于所述第i搜索空间的搜索空间标识。
在一种可能的实施方式中,所述确定模块1110还包括还包括第四确定单元,用于:
响应于所述第i搜索空间中存在目标候选PDCCH与所述第k搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,确定所述目标候选PDCCH不纳入PDCCH检测数计算。
在一种可能的实施方式中,所述确定模块1110还包括:
第五确定单元,用于确定所述第j搜索空间中,与所述目标候选PDCCH关联的关联候选PDCCH;
第六确定单元,用于响应于所述关联候选PDCCH与第l搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,确定所述关联候选PDCCH不纳入候选PDCCH盲检总次数,所述第l搜索空间的搜索空间标识小于所述第j搜索空间的搜索空间标识;
第七确定单元,用于响应于所述第l搜索空间中不存在与所述关联候选PDCCH使用相同CCE、加扰标识以及DCI格式的候选PDCCH,确定所述关联候选PDCCH纳入PDCCH检测数计算,且所述关联候选PDCCH的BD count值为1。
在一种可能的实施方式中,所述目标搜索空间同时包含所述关联搜索空间,或,同时不包含所述关联搜索空间;
所述确定模块1110,包括:
第八确定单元,用于确定所述搜索空间集中各个搜索空间的候选PDCCH数量,以及各个搜索空间的不重叠CCE数量;
第九确定单元,用于基于所述候选PDCCH数量、所述不重叠CCE数量、所述BD count值以及所述终端盲检能力,确定所述搜索空间集中的所述目标搜索空间。
在一种可能的实施方式中,所述第九确定单元,用于:
按照搜索空间的优先级降序,基于所述候选PDCCH数量以及所述BD count值,确定第x检测数,所 述第x检测数是前x个优先级对应搜索空间中候选PDCCH的检测总次数,所述前x个优先级对应搜索空间在同一时间单位下进行PDCCH发送,且前x个优先级对应搜索空间中同时包含所述关联搜索空间,或同时不包含所述关联搜索空间,x为正整数;
按照搜索空间的优先级降序,基于所述不重叠CCE数量,确定第y不重叠CCE总数,所述第y不重叠CCE总数是前y个优先级对应搜索空间中不重叠CCE的总数,所述前y个优先级对应搜索空间在同一时间单位下进行PDCCH发送,且前y个优先级对应搜索空间中同时包含所述关联搜索空间,或同时不包含所述关联搜索空间,y为正整数;
响应于所述第x检测数大于PDCCH检测数上限,且第x-1检测数小于等于所述PDCCH检测数上限,将前x-1个优先级对应的搜索空间确定为第一候选搜索空间;
响应于所述第y不重叠CCE总数大于不重叠CCE数量上限,且第y-1不重叠CCE总数小于等于所述不重叠CCE数量上限,将前y-1个优先级对应的搜索空间确定为第二候选搜索空间;
将所述第一候选搜索空间与所述第二候选搜索空间的交集确定为所述目标搜索空间。
在一种可能的实施方式中,所述第i搜索空间与所述第j搜索空间的优先级相同;
所述第j搜索空间的优先级被设置为所述第i搜索空间的优先级;
或,
所述第i搜索空间的优先级被设置为所述第j搜索空间的优先级。
在一种可能的实施方式中,所述确定模块1110还包括第十确定单元,用于:
响应于所述关联搜索空间中不存在候选PDCCH与第k搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,确定所述关联搜索空间中的各个所述候选PDCCH纳入PDCCH检测数计算,所述第k搜索空间的搜索空间标识小于所述关联搜索空间的搜索空间标识。
在一种可能的实施方式中,所述确定模块1110还包括第十一确定单元,用于:
响应于所述关联搜索空间中存在目标候选PDCCH与所述第l搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,确定所述目标候选PDCCH以及所述目标候选PDCCH对应的关联候选PDCCH不纳入PDCCH检测数计算。
在一种可能的实施方式中,所述第i搜索空间用于在第一时间单位下进行PDCCH发送,所述第j搜索空间用于在第二时间单位下进行PDCCH发送,所述第一时间单位不同于所述第二时间单位。
在一种可能的实施方式中,所述第二确定单元,用于:
基于所述第一BD count值和所述终端盲检能力,确定所述搜索空间集中所述第一时间单位对应的第一目标搜索空间;
基于所述第二BD count值和所述终端盲检能力,确定所述搜索空间集中所述第二时间单位对应的第二目标搜索空间。
在一种可能的实施方式中,所述第二确定单元,用于:
基于所述第一BD count值和所述终端盲检能力,确定所述搜索空间集中所述第一时间单位对应的第一目标搜索空间;
基于所述第二BD count值、所述终端盲检能力以及所述第一目标搜索空间,确定所述搜索空间集中所述第二时间单位对应的第二目标搜索空间。
在一种可能的实施方式中,所述第二确定单元,具体用于:
响应于所述第一目标搜索空间中包含所述第i搜索空间,基于所述第二BD count值和所述终端盲检能力,确定所述搜索空间集中所述第二时间单位对应的所述第二目标搜索空间;
响应于所述第一目标搜索空间中不包含所述第i搜索空间,将所述第二BD count值更新为1;基于更新后的所述第二BD count值和所述终端盲检能力,确定所述搜索空间集中所述第二时间单位对应的所述第二目标搜索空间。
在一种可能的实施方式中,所述关联搜索空间分别对应不同CORESET,且相同聚合等级下,所述关联搜索空间中相同索引的候选PDCCH用于传输同一个DCI,所述DCI用于调用同一物理信道。
在一种可能的实施方式中,所述BD count值由所述终端设备进行PDCCH重复传输时上报网络设备,或者,所述BD count值为默认值,或者,所述BD count值由所述网络设备从所述终端设备上报的多个候选BD count值中选择并配置。
在一种可能的实施方式中,所述关联搜索空间通过高层信令或物理层信令配置。
在一种可能的实施方式中,所述终端盲检能力包括:时间单位内的PDCCH检测数上限,和/或,不重叠CCE数量上限。
在一种可能的实施方式中,所述装置还包括:盲检模块,用于对所述目标搜索空间进行PDCCH盲检。
在一种可能的实施方式中,所述装置还包括:调度模块,用于在所述目标搜索空间的候选PDCCH上 进行终端调度。
综上所述,本申请实施例提供的技术方案中,由于配置的搜索空间集可以超过终端设备的盲检能力上限,且当搜索空间集中包含用于PDCCH重复传输的关联搜索空间时,进行PDCCH重复传输时使用的BD count值可以大于等于2,因此终端设备和网络设备需要明确BD count值应用到关联搜索空间的方式,并基于BD count值从搜索空间集中确定出符合终端盲检能力的目标搜索空间,以便网络设备在目标搜索空间上进行终端调度,终端设备在目标搜索空间进行PDCCH盲检,保证终端设备的盲检成功率。
需要说明的一点是,上述实施例提供的装置在实现其功能时,仅以上述各个功能模块的划分进行举例说明,实际应用中,可以根据实际需要而将上述功能分配由不同的功能模块完成,即将设备的内容结构划分成不同的功能模块,以完成以上描述的全部或者部分功能。
关于上述实施例中的装置,其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述,此处将不做详细阐述说明。
请参考图12,其示出了本申请一个实施例提供的通信设备的结构示意图,该通信设备可以实现上述实施例中的终端设备或网络设备。该通信设备可以包括:处理器1201、接收器1202、发射器1203、存储器1204和总线1205。
处理器1201包括一个或者一个以上处理核心,处理器1201通过运行软件程序以及模块,从而执行各种功能应用以及信息处理。
接收器1202和发射器1203可以实现为一个收发器,该收发器可以是一块通信芯片。
存储器1204通过总线1205与处理器1201相连。
存储器1204可用于存储计算机程序,处理器1201用于执行该计算机程序,以实现上述方法实施例中终端设备或网络设备执行的各个步骤。
此外,存储器1204可以由任何类型的易失性或非易失性存储设备或者它们的组合实现,易失性或非易失性存储设备包括但不限于:RAM(Random-Access Memory,随机存储器)和ROM(Read-Only Memory,只读存储器)、EPROM(Erasable Programmable Read-Only Memory,可擦写可编程只读存储器)、EEPROM(Electrically Erasable Programmable Read-Only Memory,电可擦写可编程只读存储器)、闪存或其他固态存储其技术,CD-ROM(Compact Disc Read-Only Memory,只读光盘)、DVD(Digital Video Disc,高密度数字视频光盘)或其他光学存储、磁带盒、磁带、磁盘存储或其他磁性存储设备。
本申请实施例涉及的中的处理器和收发器,可以执行上述各个实施例提供的搜索空间的确定方法,此处不再赘述。
在一种可能的实现方式中,处理器1201,用于基于BD count值和终端盲检能力确定搜索空间集中的目标搜索空间,所述BD count值在终端设备进行PDCCH重复传输时使用,所述BD count值为大于等于2的整数,所述搜索空间集中包含关联搜索空间,且所述关联搜索空间用于PDCCH重复传输。
可选的,当通信设备为终端设备时,处理器1201,还用于对所述目标搜索空间进行PDCCH盲检。
可选的,当通信设备为网络设备时,处理器1201,还用于在所述目标搜索空间的候选PDCCH上进行终端调度。
本申请实施例还提供了一种计算机可读存储介质,所述存储介质中存储有计算机程序,所述计算机程序用于被终端设备或网络设备的处理器执行,以实现上述搜索空间的确定方法。
可选地,该计算机可读存储介质可以包括:ROM(Read-Only Memory,只读存储器)、RAM(Random-Access Memory,随机存储器)、SSD(Solid State Drives,固态硬盘)或光盘等。其中,随机存取记忆体可以包括ReRAM(Resistance Random Access Memory,电阻式随机存取记忆体)和DRAM(Dynamic Random Access Memory,动态随机存取存储器)。
本申请实施例还提供了一种芯片,所述芯片包括可编程逻辑电路和/或程序指令,当所述芯片在终端设备上运行时,用于实现上述搜索空间的确定方法。
本申请实施例还提供了一种计算机程序产品或计算机程序,所述计算机程序产品或计算机程序包括计算机指令,所述计算机指令存储在计算机可读存储介质中,终端设备或网络设备的处理器从所述计算机可读存储介质读取并执行所述计算机指令,以实现上述搜索空间的确定方法。
应理解,在本申请的实施例中提到的“指示”可以是直接指示,也可以是间接指示,还可以是表示具有关联关系。举例说明,A指示B,可以表示A直接指示B,例如B可以通过A获取;也可以表示A间接指示B,例如A指示C,B可以通过C获取;还可以表示A和B之间具有关联关系。
在本申请实施例的描述中,术语“对应”可表示两者之间具有直接对应或间接对应的关系,也可以表示两者之间具有关联关系,也可以是指示与被指示、配置与被配置等关系。
在本文中提及的“多个”是指两个或两个以上。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。字符“/”一 般表示前后关联对象是一种“或”的关系。
另外,本文中描述的步骤编号,仅示例性示出了步骤间的一种可能的执行先后顺序,在一些其它实施例中,上述步骤也可以不按照编号顺序来执行,如两个不同编号的步骤同时执行,或者两个不同编号的步骤按照与图示相反的顺序执行,本申请实施例对此不作限定。
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,本申请实施例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。
以上所述仅为本申请的示例性实施例,并不用以限制本申请,凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。

Claims (55)

  1. 一种搜索空间的确定方法,其特征在于,所述方法包括:
    基于盲检次数BD count值和终端盲检能力确定搜索空间集中的目标搜索空间,所述BD count值在终端设备进行物理下行控制信道PDCCH重复传输时使用,所述BD count值为大于等于2的整数,所述搜索空间集中包含关联搜索空间,且所述关联搜索空间用于PDCCH重复传输。
  2. 根据权利要求1所述的方法,其特征在于,所述关联搜索空间为所述搜索空间集中的第i搜索空间和第j搜索空间,i和j为正整数;
    所述第i搜索空间和第j搜索空间的搜索空间标识连续,或,所述第i搜索空间和第j搜索空间的搜索空间标识不连续。
  3. 根据权利要求2所述的方法,其特征在于,所述BD count值为n;
    所述基于BD count值和终端盲检能力确定搜索空间集中的目标搜索空间,包括:
    确定所述第i搜索空间对应的第一BD count值为m,所述第j搜索空间对应的第二BD count值为n-m,m为小于n的正整数;
    基于所述第一BD count值、所述第二BD count值和所述终端盲检能力确定所述搜索空间集中的所述目标搜索空间。
  4. 根据权利要求3所述的方法,其特征在于,
    所述BD count值为2,所述第一BD count值为1,所述第二BD count值为1;
    所述BD count值为3,所述第一BD count值为1,所述第二BD count值为2。
  5. 根据权利要求4所述的方法,其特征在于,所述第i搜索空间的搜索空间标识小于所述第j搜索空间的搜索空间标识。
  6. 根据权利要求3所述的方法,其特征在于,所述基于所述第一BD count值、所述第二BD count值和所述终端盲检能力确定所述搜索空间集中的所述目标搜索空间,包括:
    确定所述搜索空间集中各个搜索空间的候选PDCCH数量,以及各个搜索空间的不重叠控制信道单元CCE数量;
    基于所述候选PDCCH数量、所述不重叠CCE数量、所述第一BD count值、所述第二BD count值以及所述终端盲检能力,确定所述搜索空间集中的所述目标搜索空间。
  7. 根据权利要求6所述的方法,其特征在于,所述基于所述候选PDCCH数量、所述不重叠CCE数量、所述第一BD count值、所述第二BD count值以及所述终端盲检能力,确定所述搜索空间集中的所述目标搜索空间,包括:
    按照搜索空间标识的升序,基于所述候选PDCCH数量、所述第一BD count值和所述第二BD count值,确定第p检测数,所述第p检测数是前p个搜索空间中候选PDCCH的检测总次数,所述前p个搜索空间在同一时间单位下进行PDCCH发送,p为正整数;
    按照搜索空间标识的升序,基于所述不重叠CCE数量,确定第q不重叠CCE总数,所述第q不重叠CCE总数是前q个搜索空间中不重叠CCE的总数,所述前q个搜索空间在同一时间单位下进行PDCCH发送,q为正整数;
    响应于所述第p检测数大于PDCCH检测数上限,且第p-1检测数小于等于所述PDCCH检测数上限,将前p-1个搜索空间确定为第一候选搜索空间;
    响应于所述第q不重叠CCE总数大于不重叠CCE数量上限,且第q-1不重叠CCE总数小于等于所述不重叠CCE数量上限,将前q-1个搜索空间确定为第二候选搜索空间;
    将所述第一候选搜索空间与所述第二候选搜索空间的交集确定为所述目标搜索空间。
  8. 根据权利要求7所述的方法,其特征在于,所述按照搜索空间标识的升序,基于所述候选PDCCH数量、所述第一BD count值和所述第二BD count值,确定第p PDCCH检测数之前,所述方法包括:
    响应于所述第i搜索空间中不存在候选PDCCH与第k搜索空间中的候选PDCCH使用相同CCE、加扰标识以及下行控制信息DCI格式,确定所述关联搜索空间中的各个所述候选PDCCH纳入PDCCH检测数计算,所述第k搜索空间的搜索空间标识小于所述第i搜索空间的搜索空间标识。
  9. 根据权利要求8所述的方法,其特征在于,所述方法还包括:
    响应于所述第i搜索空间中存在目标候选PDCCH与所述第k搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,确定所述目标候选PDCCH不纳入PDCCH检测数计算。
  10. 根据权利要求9所述的方法,其特征在于,所述方法还包括:
    确定所述第j搜索空间中,与所述目标候选PDCCH关联的关联候选PDCCH;
    响应于所述关联候选PDCCH与第l搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格 式,确定所述关联候选PDCCH不纳入候选PDCCH盲检总次数,所述第l搜索空间的搜索空间标识小于所述第j搜索空间的搜索空间标识;
    响应于所述第l搜索空间中不存在与所述关联候选PDCCH使用相同CCE、加扰标识以及DCI格式的候选PDCCH,确定所述关联候选PDCCH纳入PDCCH检测数计算,且所述关联候选PDCCH的BD count值为1。
  11. 根据权利要求2所述的方法,其特征在于,所述目标搜索空间同时包含所述关联搜索空间,或,同时不包含所述关联搜索空间;
    所述基于BD count值和终端盲检能力确定搜索空间集中的目标搜索空间,包括:
    确定所述搜索空间集中各个搜索空间的候选PDCCH数量,以及各个搜索空间的不重叠CCE数量;
    基于所述候选PDCCH数量、所述不重叠CCE数量、所述BD count值以及所述终端盲检能力,确定所述搜索空间集中的所述目标搜索空间。
  12. 根据权利要求11所述的方法,其特征在于,所述基于所述候选PDCCH数量、所述不重叠CCE数量、所述BD count值以及所述终端盲检能力,确定所述搜索空间集中的所述目标搜索空间,包括:
    按照搜索空间的优先级降序,基于所述候选PDCCH数量以及所述BD count值,确定第x检测数,所述第x检测数是前x个优先级对应搜索空间中候选PDCCH的检测总次数,所述前x个优先级对应搜索空间在同一时间单位下进行PDCCH发送,且前x个优先级对应搜索空间中同时包含所述关联搜索空间,或同时不包含所述关联搜索空间,x为正整数;
    按照搜索空间的优先级降序,基于所述不重叠CCE数量,确定第y不重叠CCE总数,所述第y不重叠CCE总数是前y个优先级对应搜索空间中不重叠CCE的总数,所述前y个优先级对应搜索空间在同一时间单位下进行PDCCH发送,且前y个优先级对应搜索空间中同时包含所述关联搜索空间,或同时不包含所述关联搜索空间,y为正整数;
    响应于所述第x检测数大于PDCCH检测数上限,且第x-1检测数小于等于所述PDCCH检测数上限,将前x-1个优先级对应的搜索空间确定为第一候选搜索空间;
    响应于所述第y不重叠CCE总数大于不重叠CCE数量上限,且第y-1不重叠CCE总数小于等于所述不重叠CCE数量上限,将前y-1个优先级对应的搜索空间确定为第二候选搜索空间;
    将所述第一候选搜索空间与所述第二候选搜索空间的交集确定为所述目标搜索空间。
  13. 根据权利要求12所述的方法,其特征在于,所述第i搜索空间与所述第j搜索空间的优先级相同;
    所述第j搜索空间的优先级被设置为所述第i搜索空间的优先级;
    或,
    所述第i搜索空间的优先级被设置为所述第j搜索空间的优先级。
  14. 根据权利要求12所述的方法,其特征在于,所述基于所述候选PDCCH数量、所述不重叠CCE数量、所述BD count值以及所述终端盲检能力,确定所述搜索空间集中的所述目标搜索空间之前,所述方法还包括:
    响应于所述关联搜索空间中不存在候选PDCCH与第k搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,确定所述关联搜索空间中的各个所述候选PDCCH纳入PDCCH检测数计算,所述第k搜索空间的搜索空间标识小于所述关联搜索空间的搜索空间标识。
  15. 根据权利要求14所述的方法,其特征在于,所述方法还包括:
    响应于所述关联搜索空间中存在目标候选PDCCH与所述第l搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,确定所述目标候选PDCCH以及所述目标候选PDCCH对应的关联候选PDCCH不纳入PDCCH检测数计算。
  16. 根据权利要求3所述的方法,其特征在于,所述第i搜索空间用于在第一时间单位下进行PDCCH发送,所述第j搜索空间用于在第二时间单位下进行PDCCH发送,所述第一时间单位不同于所述第二时间单位。
  17. 根据权利要求16所述的方法,其特征在于,所述基于所述第一BD count值、所述第二BD count值和所述终端盲检能力确定所述搜索空间集中的所述目标搜索空间,包括:
    基于所述第一BD count值和所述终端盲检能力,确定所述搜索空间集中所述第一时间单位对应的第一目标搜索空间;
    基于所述第二BD count值和所述终端盲检能力,确定所述搜索空间集中所述第二时间单位对应的第二目标搜索空间。
  18. 根据权利要求16所述的方法,其特征在于,所述基于所述第一BD count值、所述第二BD count值和所述终端盲检能力确定所述搜索空间集中的所述目标搜索空间,包括:
    基于所述第一BD count值和所述终端盲检能力,确定所述搜索空间集中所述第一时间单位对应的第一 目标搜索空间;
    基于所述第二BD count值、所述终端盲检能力以及所述第一目标搜索空间,确定所述搜索空间集中所述第二时间单位对应的第二目标搜索空间。
  19. 根据权利要求18所述的方法,其特征在于,所述基于所述第二BD count值、所述终端盲检能力以及所述第一目标搜索空间,确定所述搜索空间集中所述第二时间单位对应的第二目标搜索空间,包括:
    响应于所述第一目标搜索空间中包含所述第i搜索空间,基于所述第二BD count值和所述终端盲检能力,确定所述搜索空间集中所述第二时间单位对应的所述第二目标搜索空间;
    响应于所述第一目标搜索空间中不包含所述第i搜索空间,将所述第二BD count值更新为1;基于更新后的所述第二BD count值和所述终端盲检能力,确定所述搜索空间集中所述第二时间单位对应的所述第二目标搜索空间。
  20. 根据权利要求1至19任一所述的方法,其特征在于,所述关联搜索空间分别对应不同控制资源集合CORESET,且相同聚合等级下,所述关联搜索空间中相同索引的候选PDCCH用于传输同一个DCI,所述DCI用于调用同一物理信道。
  21. 根据权利要求1至19任一所述的方法,其特征在于,所述BD count值由所述终端设备进行PDCCH重复传输时上报网络设备,或者,所述BD count值为默认值,或者,所述BD count值由所述网络设备从所述终端设备上报的多个候选BD count值中选择并配置。
  22. 根据权利要求1至19任一所述的方法,其特征在于,所述关联搜索空间通过高层信令或物理层信令配置。
  23. 根据权利要求1至19任一所述的方法,其特征在于,所述终端盲检能力包括:时间单位内的PDCCH检测数上限,和/或,不重叠CCE数量上限。
  24. 根据权利要求1至19任一所述的方法,其特征在于,所述方法应用于终端设备,所述方法还包括:
    对所述目标搜索空间进行PDCCH盲检。
  25. 根据权利要求1至19任一所述的方法,其特征在于,所述方法应用于网络设备,所述方法还包括:
    在所述目标搜索空间的候选PDCCH上进行终端调度。
  26. 一种搜索空间的确定装置,其特征在于,所述装置包括:
    确定模块,用于基于盲检次数BD count值和终端盲检能力确定搜索空间集中的目标搜索空间,所述BD count值在终端设备进行物理下行控制信道PDCCH重复传输时使用,所述BD count值为大于等于2的整数,所述搜索空间集中包含关联搜索空间,且所述关联搜索空间用于PDCCH重复传输。
  27. 根据权利要求26所述的装置,其特征在于,所述关联搜索空间为所述搜索空间集中的第i搜索空间和第j搜索空间,i和j为正整数;
    所述第i搜索空间和第j搜索空间的搜索空间标识连续,或,所述第i搜索空间和第j搜索空间的搜索空间标识不连续。
  28. 根据权利要求27所述的装置,其特征在于,所述BD count值为n;
    所述确定模块,包括:
    第一确定单元,用于确定所述第i搜索空间对应的第一BD count值为m,所述第j搜索空间对应的第二BD count值为n-m,m为小于n的正整数;
    第二确定单元,用于基于所述第一BD count值、所述第二BD count值和所述终端盲检能力确定所述搜索空间集中的所述目标搜索空间。
  29. 根据权利要求28所述的装置,其特征在于,
    所述BD count值为2,所述第一BD count值为1,所述第二BD count值为1;
    所述BD count值为3,所述第一BD count值为1,所述第二BD count值为2。
  30. 根据权利要求27所述的装置,其特征在于,所述第i搜索空间的搜索空间标识小于所述第j搜索空间的搜索空间标识。
  31. 根据权利要求28所述的装置,其特征在于,所述第二确定单元,用于:
    确定所述搜索空间集中各个搜索空间的候选PDCCH数量,以及各个搜索空间的不重叠控制信道单元CCE数量;
    基于所述候选PDCCH数量、所述不重叠CCE数量、所述第一BD count值、所述第二BD count值以及所述终端盲检能力,确定所述搜索空间集中的所述目标搜索空间。
  32. 根据权利要求31所述的装置,其特征在于,所述第二确定单元,用于:
    按照搜索空间标识的升序,基于所述候选PDCCH数量、所述第一BD count值和所述第二BD count 值,确定第p检测数,所述第p检测数是前p个搜索空间中候选PDCCH的检测总次数,所述前p个搜索空间在同一时间单位下进行PDCCH发送,p为正整数;
    按照搜索空间标识的升序,基于所述不重叠CCE数量,确定第q不重叠CCE总数,所述第q不重叠CCE总数是前q个搜索空间中不重叠CCE的总数,所述前q个搜索空间在同一时间单位下进行PDCCH发送,q为正整数;
    响应于所述第p检测数大于PDCCH检测数上限,且第p-1检测数小于等于所述PDCCH检测数上限,将前p-1个搜索空间确定为第一候选搜索空间;
    响应于所述第q不重叠CCE总数大于不重叠CCE数量上限,且第q-1不重叠CCE总数小于等于所述不重叠CCE数量上限,将前q-1个搜索空间确定为第二候选搜索空间;
    将所述第一候选搜索空间与所述第二候选搜索空间的交集确定为所述目标搜索空间。
  33. 根据权利要求32所述的装置,其特征在于,所述确定模块,还包括:
    第三确定单元,用于响应于所述第i搜索空间中不存在候选PDCCH与第k搜索空间中的候选PDCCH使用相同CCE、加扰标识以及下行控制信息DCI格式,确定所述关联搜索空间中的各个所述候选PDCCH纳入PDCCH检测数计算,所述第k搜索空间的搜索空间标识小于所述第i搜索空间的搜索空间标识。
  34. 根据权利要求33所述的装置,其特征在于,所述确定模块,还包括:
    第四确定单元,用于响应于所述第i搜索空间中存在目标候选PDCCH与所述第k搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,确定所述目标候选PDCCH不纳入PDCCH检测数计算。
  35. 根据权利要求34所述的装置,其特征在于,所述确定模块,还包括:
    第五确定单元,用于确定所述第j搜索空间中,与所述目标候选PDCCH关联的关联候选PDCCH;
    第六确定单元,用于响应于所述关联候选PDCCH与第l搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,确定所述关联候选PDCCH不纳入候选PDCCH盲检总次数,所述第l搜索空间的搜索空间标识小于所述第j搜索空间的搜索空间标识;
    第七确定单元,用于响应于所述第l搜索空间中不存在与所述关联候选PDCCH使用相同CCE、加扰标识以及DCI格式的候选PDCCH,确定所述关联候选PDCCH纳入PDCCH检测数计算,且所述关联候选PDCCH的BD count值为1。
  36. 根据权利要求27所述的装置,其特征在于,所述目标搜索空间同时包含所述关联搜索空间,或,同时不包含所述关联搜索空间;
    所述确定模块,包括:
    第八确定单元,用于确定所述搜索空间集中各个搜索空间的候选PDCCH数量,以及各个搜索空间的不重叠CCE数量;
    第九确定单元,用于基于所述候选PDCCH数量、所述不重叠CCE数量、所述BD count值以及所述终端盲检能力,确定所述搜索空间集中的所述目标搜索空间。
  37. 根据权利要求36所述的装置,其特征在于,所述第九确定单元,用于:
    按照搜索空间的优先级降序,基于所述候选PDCCH数量以及所述BD count值,确定第x检测数,所述第x检测数是前x个优先级对应搜索空间中候选PDCCH的检测总次数,所述前x个优先级对应搜索空间在同一时间单位下进行PDCCH发送,且前x个优先级对应搜索空间中同时包含所述关联搜索空间,或同时不包含所述关联搜索空间,x为正整数;
    按照搜索空间的优先级降序,基于所述不重叠CCE数量,确定第y不重叠CCE总数,所述第y不重叠CCE总数是前y个优先级对应搜索空间中不重叠CCE的总数,所述前y个优先级对应搜索空间在同一时间单位下进行PDCCH发送,且前y个优先级对应搜索空间中同时包含所述关联搜索空间,或同时不包含所述关联搜索空间,y为正整数;
    响应于所述第x检测数大于PDCCH检测数上限,且第x-1检测数小于等于所述PDCCH检测数上限,将前x-1个优先级对应的搜索空间确定为第一候选搜索空间;
    响应于所述第y不重叠CCE总数大于不重叠CCE数量上限,且第y-1不重叠CCE总数小于等于所述不重叠CCE数量上限,将前y-1个优先级对应的搜索空间确定为第二候选搜索空间;
    将所述第一候选搜索空间与所述第二候选搜索空间的交集确定为所述目标搜索空间。
  38. 根据权利要求37所述的装置,其特征在于,所述第i搜索空间与所述第j搜索空间的优先级相同;
    所述第j搜索空间的优先级被设置为所述第i搜索空间的优先级;
    或,
    所述第i搜索空间的优先级被设置为所述第j搜索空间的优先级。
  39. 根据权利要求37所述的装置,其特征在于,所述确定模块,还包括:
    第十确定单元,用于响应于所述关联搜索空间中不存在候选PDCCH与第k搜索空间中的候选PDCCH 使用相同CCE、加扰标识以及DCI格式,确定所述关联搜索空间中的各个所述候选PDCCH纳入PDCCH检测数计算,所述第k搜索空间的搜索空间标识小于所述关联搜索空间的搜索空间标识。
  40. 根据权利要求39所述的装置,其特征在于,所述确定单元,还包括:
    第十一确定单元,用于响应于所述关联搜索空间中存在目标候选PDCCH与所述第l搜索空间中的候选PDCCH使用相同CCE、加扰标识以及DCI格式,确定所述目标候选PDCCH以及所述目标候选PDCCH对应的关联候选PDCCH不纳入PDCCH检测数计算。
  41. 根据权利要求28所述的装置,其特征在于,所述第i搜索空间用于在第一时间单位下进行PDCCH发送,所述第j搜索空间用于在第二时间单位下进行PDCCH发送,所述第一时间单位不同于所述第二时间单位。
  42. 根据权利要求41所述的装置,其特征在于,所述第二确定单元,用于:
    基于所述第一BD count值和所述终端盲检能力,确定所述搜索空间集中所述第一时间单位对应的第一目标搜索空间;
    基于所述第二BD count值和所述终端盲检能力,确定所述搜索空间集中所述第二时间单位对应的第二目标搜索空间。
  43. 根据权利要求41所述的装置,其特征在于,所述第二确定单元,用于:
    基于所述第一BD count值和所述终端盲检能力,确定所述搜索空间集中所述第一时间单位对应的第一目标搜索空间;
    基于所述第二BD count值、所述终端盲检能力以及所述第一目标搜索空间,确定所述搜索空间集中所述第二时间单位对应的第二目标搜索空间。
  44. 根据权利要求43所述的装置,其特征在于,所述第二确定单元,用于:
    响应于所述第一目标搜索空间中包含所述第i搜索空间,基于所述第二BD count值和所述终端盲检能力,确定所述搜索空间集中所述第二时间单位对应的所述第二目标搜索空间;
    响应于所述第一目标搜索空间中不包含所述第i搜索空间,将所述第二BD count值更新为1;基于更新后的所述第二BD count值和所述终端盲检能力,确定所述搜索空间集中所述第二时间单位对应的所述第二目标搜索空间。
  45. 根据权利要求26至44任一所述的装置,其特征在于,所述关联搜索空间分别对应不同控制资源集合CORESET,且相同聚合等级下,所述关联搜索空间中相同索引的候选PDCCH用于传输同一个DCI,所述DCI用于调用同一物理信道。
  46. 根据权利要求26至44任一所述的装置,其特征在于,所述BD count值由所述终端设备进行PDCCH重复传输时上报网络设备,或者,所述BD count值为默认值,或者,所述BD count值由所述网络设备从所述终端设备上报的多个候选BD count值中选择并配置。
  47. 根据权利要求26至44任一所述的装置,其特征在于,所述关联搜索空间通过高层信令或物理层信令配置。
  48. 根据权利要求26至44任一所述的装置,其特征在于,所述终端盲检能力包括:时间单位内的PDCCH检测数上限,和/或,不重叠CCE数量上限。
  49. 根据权利要求26至44任一所述的装置,其特征在于,所述装置还包括:
    盲检模块,用于对所述目标搜索空间进行PDCCH盲检。
  50. 根据权利要求26至44任一所述的装置,其特征在于,所述装置还包括:
    调度模块,用于在所述目标搜索空间的候选PDCCH上进行终端调度。
  51. 一种终端设备,其特征在于,所述终端设备包括处理器和收发器;
    所述处理器,用于基于盲检次数BD count值和终端盲检能力确定搜索空间集中的目标搜索空间,所述BD count值在终端设备进行物理下行控制信道PDCCH重复传输时使用,所述BD count值为大于等于2的整数,所述搜索空间集中包含关联搜索空间,且所述关联搜索空间用于PDCCH重复传输。
  52. 一种网络设备,其特征在于,所述网络设备包括处理器和收发器;
    所述处理器,用于基于盲检次数BD count值和终端盲检能力确定搜索空间集中的目标搜索空间,所述BD count值在终端设备进行物理下行控制信道PDCCH重复传输时使用,所述BD count值为大于等于2的整数,所述搜索空间集中包含关联搜索空间,且所述关联搜索空间用于PDCCH重复传输。
  53. 一种计算机可读存储介质,其特征在于,所述存储介质中存储有计算机程序,所述计算机程序用于被处理器执行,以实现如权利要求1至25任一项所述的搜索空间的确定方法。
  54. 一种芯片,其特征在于,所述芯片包括可编程逻辑电路和/或程序指令,当所述芯片运行时,用于实现如权利要求1至25任一项所述的搜索空间的确定方法。
  55. 一种计算机程序产品或计算机程序,其特征在于,所述计算机程序产品或计算机程序包括计算机 指令,所述计算机指令存储在计算机可读存储介质中,处理器从所述计算机可读存储介质读取并执行所述计算机指令,以实现如权利要求1至25任一项所述的搜索空间的确定方法。
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