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WO2023010665A1 - Procédé et appareil de détermination d'espace de recherche, dispositifs et support de stockage - Google Patents

Procédé et appareil de détermination d'espace de recherche, dispositifs et support de stockage 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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WIPO (PCT)
Prior art keywords
search space
pdcch
count value
candidate
target
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PCT/CN2021/119915
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English (en)
Chinese (zh)
Inventor
方昀
陈文洪
史志华
黄莹沛
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Priority to CN202180097856.3A priority Critical patent/CN117256113A/zh
Publication of WO2023010665A1 publication Critical patent/WO2023010665A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande divulgue un procédé et un appareil de détermination d'espace de recherche, des dispositifs et un support de stockage qui se rapportent au domaine technique des communications. Le procédé consiste à déterminer, sur la base d'une valeur de comptage de BD et de la capacité de détection à l'aveugle d'un terminal, un espace de recherche cible dans un ensemble d'espaces de recherche, la valeur de comptage de BD étant utilisée lorsqu'un dispositif terminal met en oeuvre une transmission répétée de PDCCH, la valeur de comptage de BD étant un nombre entier supérieur ou égal à 2, l'ensemble d'espaces de recherche contenant un espace de recherche associé, et l'espace de recherche associé étant utilisé pour une transmission répétée de PDCCH. Selon les modes de réalisation de la présente demande, lorsque la valeur de comptage de BD est supérieure ou égale à 2, le dispositif terminal et un dispositif réseau peuvent spécifier le moyen par lequel la valeur de comptage de BD est appliquée à l'espace de recherche associé, et déterminer un espace de recherche cible unifié dans l'ensemble d'espaces de recherche, de sorte que le dispositif réseau met en oeuvre une planification de terminal dans l'espace de recherche cible, et le dispositif terminal met en oeuvre une détection à l'aveugle de PDCCH dans l'espace de recherche cible, ce qui garantit le taux de réussite de détection à l'aveugle du dispositif terminal.
PCT/CN2021/119915 2021-08-06 2021-09-23 Procédé et appareil de détermination d'espace de recherche, dispositifs et support de stockage Ceased WO2023010665A1 (fr)

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WO2020166925A1 (fr) * 2019-02-14 2020-08-20 엘지전자 주식회사 Surveillance d'un signal d'économie d'énergie et d'un canal de commande de liaison descendante physique

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CN116865912B (zh) * 2023-09-04 2023-11-03 芯迈微半导体(上海)有限公司 一种物理层下行控制信道盲检控制及早停的方法和系统

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