WO2020232647A1 - Method and apparatus for detecting pdcch, and communication device - Google Patents

Abstract

Provided are a method and apparatus for detecting a PDCCH, and a communication device. The method comprises: a terminal device determining, for an available sub-band in a downlink BWP configured on an unlicensed spectrum carrier, a first CORESET configuration from among various CORESET configurations, wherein the CORESET configurations do not define an absolute position of a frequency domain resource, and the available sub-band is a sub-band where a network device successfully executes LBT; on the basis of the first CORESET configuration and the terminal device, a first PDCCH being a PDCCH for scheduling the terminal device; and on the basis of a determined resource position, the terminal device detecting the first PDCCH. In the method provided in the embodiments of the present application, a first CORESET configuration is dynamically selected, for an available sub-band in a downlink BWP, from among various CORESET configurations that do not define an absolute position of a frequency domain resource, so as to determine a resource position, on the available sub-band, for detecting a PDCCH, such that the flexible selection of a CORESET configuration can be realized, and therefore, the maximization of the number of instances of blind detection of a terminal device can be achieved, and the utilization rate of PDCCH resources can be improved.

Description

Method, device and communication equipment for detecting PDCCH Technical field

The embodiments of the present application relate to the field of communications, and more specifically, to a method, device, and communication device for detecting PDCCH.

Background technique

In New Radio Unlicensed (NR-U), when a downlink bandwidth part (Bandwidth part, BWP) contains multiple subbands, data can be transmitted in all or part of a BWP subband However, because before the network device transmits data, it is not sure which subband will successfully perform Listen Before Talk (LBT), so the network device will configure a physical downlink control channel (Physical Downlink Control Channel) on each subband. Downlink Control Channel (PDCCH) blind detection area, namely control resource set (Control-Resource Set, CORESET) and search space (Search Space, SS).

Due to the uncertainty of the channel, if the blind check times of the blind check areas configured by the network equipment for all subbands exceed the maximum allowable blind check times of the terminal device, the blind check times of the terminal device may exceed the maximum blind check times. If the blind check area is configured according to the most conservative blind check times, for example, the total number of blind check areas configured on each subband does not exceed the maximum number allowed by the terminal device, but this will lead to if there is only one subband ( Or when not all subbands are available), the number of blind checks is too few, and the PDCCH configuration resources are not fully utilized, resulting in a waste of resources.

Therefore, how to make full use of PDCCH to configure resources and reduce the waste of resources is a problem to be solved.

Summary of the invention

The embodiments of the present application provide a method, apparatus and communication equipment for detecting PDCCH, which can reduce the waste of resources.

In a first aspect, a method for detecting PDCCH is provided, including: a terminal device determines a first CORESET configuration from multiple CORESET configurations for subbands available in a downlink BWP configured on an unlicensed spectrum carrier. The absolute position of frequency domain resources is not limited in the CORESET configuration, and the available subbands are the subbands where the network device successfully performs LBT; based on the first CORESET configuration, the terminal device, the first PDCCH is used for scheduling PDCCH of the terminal device; based on the determined resource location, the terminal device detects the first PDCCH.

In the method for detecting PDCCH provided by the embodiments of the present application, the first CORESET configuration is dynamically selected from a variety of CORESET configurations that do not limit the absolute position of frequency domain resources by determining the subband available in the downlink BWP. The resource location of the PDCCH is detected on the available subbands, so that the CORESET configuration can be flexibly selected, so that the number of blind detections of the terminal device can be maximized, and the utilization rate of the PDCCH resources can be improved.

In a second aspect, a method for detecting PDCCH is provided, including: a terminal device detects indication information from a network device on a subband of a downlink BWP configured by an unlicensed spectrum carrier; and detects the indication information on the subband When indicating information, the terminal device determines the resource location for detecting the first PDCCH on the subband according to the instruction of the instruction information, and the first PDCCH is the PDCCH used to schedule the terminal device; At the resource location, the terminal device detects the first PDCCH.

In the method for detecting the PDCCH provided in the embodiments of the present application, the resource location for detecting the first PDCCH is dynamically determined according to the instructions of the network device for the available subbands in the downlink BWP, so that the resource location of the first PDCCH can be flexibly selected and detected Therefore, it is possible to maximize the number of blind checks of the terminal equipment, and to improve the utilization rate of PDCCH resources.

In a third aspect, a method for detecting a PDCCH is provided, which includes: a terminal device targets available subbands in a downlink BWP configured on an unlicensed spectrum carrier, and the terminal device detects that the available subbands are pre-configured In the resource position of the first PDCCH, the resource position to be detected is determined; based on the resource position to be detected, the terminal device detects the first PDCCH.

In the method for detecting PDCCH provided by the embodiments of the present application, the available subbands in the downlink BWP are dynamically determined from the pre-configured resource locations to detect the PDCCH resource locations to be detected on the available subbands, thereby achieving flexibility. Selecting the resource location to be detected can maximize the number of blind detections of the terminal device and improve the utilization rate of PDCCH resources.

In a fourth aspect, a method for detecting PDCCH is provided, including: a network device determines a first CORESET configuration from multiple CORESET configurations for subbands available in a downlink BWP configured on an unlicensed spectrum carrier. The absolute position of the frequency domain resources is not limited in the CORESET configuration, and the available subband is the subband for which the network device successfully performs LBT; based on the first CORESET configuration, the network device determines to detect on the available subband The resource location of the first PDCCH, where the first PDCCH is a PDCCH used for scheduling the terminal device; at the determined resource location, the network device sends the first PDCCH to the terminal device.

In a fifth aspect, a method for detecting PDCCH is provided, including: a network device sends instruction information to a terminal device, where the instruction information is used by the terminal device to determine a resource location for detecting a first PDCCH on the subband, The first PDCCH is a PDCCH used to schedule the terminal device; the network device sends the first PDCCH to the terminal device.

In a sixth aspect, a method for detecting a PDCCH is provided, including: a network device targets available subbands in a downlink BWP configured on an unlicensed spectrum carrier, and the network device starts from a terminal pre-configured for the available subbands In the device detecting the resource location of the first PDCCH, determine the resource location of the first PDCCH to be detected by the terminal device; according to the resource location of the first PDCCH to be detected by the terminal device, the network device sends the The first PDCCH.

In a seventh aspect, a device for detecting PDCCH is provided, which is used to execute the method in any one of the first to sixth aspects or in each implementation manner.

In an eighth aspect, a communication device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute any one of the above-mentioned first aspect to the sixth aspect or the method in each implementation manner thereof.

In a ninth aspect, a chip is provided, which is used to implement any one of the foregoing first to sixth aspects or the method in each of its implementation manners.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes any one of the above-mentioned first to sixth aspects or any of the implementations thereof method.

In a tenth aspect, a computer-readable storage medium is provided for storing a computer program that enables a computer to execute any one of the above-mentioned first to sixth aspects or the method in each implementation manner thereof.

In an eleventh aspect, a computer program product is provided, including computer program instructions that cause a computer to execute any one of the above-mentioned first to sixth aspects or the method in each implementation manner thereof.

In a twelfth aspect, a computer program is provided, which, when run on a computer, causes the computer to execute any one of the above-mentioned first to sixth aspects or the method in each implementation manner thereof.

Description of the drawings

Figure 1 is a schematic diagram of an application scenario of this application.

Fig. 2 is a schematic flowchart of a method for detecting PDCCH provided by an embodiment of the present application.

FIG. 3 is a schematic diagram of multiple subbands and multiple CORESET configurations provided by an embodiment of the present application;

Fig. 4 is another schematic flowchart of a method for detecting PDCCH provided by an embodiment of the present application.

FIG. 5 is another schematic flowchart of the method for detecting PDCCH provided by an embodiment of the present application.

FIG. 6 is another schematic flowchart of the method for detecting PDCCH provided by an embodiment of the present application.

FIG. 7 is another schematic flowchart of the method for detecting PDCCH provided by an embodiment of the present application.

FIG. 8 is another schematic flowchart of the method for detecting PDCCH provided by an embodiment of the present application.

FIG. 9 is another schematic flowchart of the method for detecting PDCCH provided by an embodiment of the present application.

FIG. 10 is a schematic structural diagram of an apparatus for detecting PDCCH provided by an embodiment of the present application.

FIG. 11 is another schematic structural diagram of an apparatus for detecting PDCCH provided by an embodiment of the present application.

FIG. 12 is another schematic structural diagram of an apparatus for detecting PDCCH provided by an embodiment of the present application.

FIG. 13 is another schematic structural diagram of the apparatus for detecting PDCCH provided by an embodiment of the present application.

FIG. 14 is another schematic structural diagram of an apparatus for detecting PDCCH provided by an embodiment of the present application.

FIG. 15 is another schematic structural diagram of the apparatus for detecting PDCCH provided by an embodiment of the present application.

FIG. 16 is another schematic structural diagram of the apparatus for detecting PDCCH provided by an embodiment of the present application.

FIG. 17 is another schematic structural diagram of the apparatus for detecting PDCCH provided by an embodiment of the present application.

FIG. 18 is a schematic structural diagram of a communication device provided by an embodiment of the present application.

FIG. 19 is a schematic structural diagram of a chip provided by an embodiment of the present application.

FIG. 20 is a schematic structural diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of this application

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, and Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

Exemplarily, the communication system 100 applied in the embodiment of the present application is shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.

The communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110. The "terminal equipment" used here includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, DSL), digital cables, and direct cable connections ; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment. A terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal" or a "mobile terminal". Examples of mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio phone transceivers Electronic device. Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.

Optionally, direct terminal connection (Device to Device, D2D) communication may be performed between the terminal devices 120.

Optionally, the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.

Figure 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.

Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the application.

It should be understood that the terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

In order to understand this application more clearly, the following briefly introduces the related content of NR unauthorized, so as to facilitate the subsequent understanding of the solution of this application. However, it should be understood that the content introduced below is only for a better understanding of this application, and should not specifically limit this application.

In the 3rd Generation Partnership Project Radio Access Network (3rd Generation Partnership Project Radio Access Network, 3GPP RAN), NR can work in unlicensed frequency bands, which can specifically include the following work scenarios:

(1) Carrier aggregation scenario: the primary serving cell (Primary Cell, PCell) is a licensed spectrum, and the secondary serving cell (Secondary Cell, SCell) aggregates and works on the unlicensed spectrum through carrier aggregation;

(2) Dual-connection working scenario: PCell is a long-term evolution (Long Term Evolution, LTE) licensed spectrum, and PScell is an NR unlicensed spectrum;

(3) Independent work scenario: NR works as an independent cell in an unlicensed spectrum.

Generally speaking, the working band of NR-U is 5GHz unlicensed spectrum and 6GHz unlicensed spectrum, (eg, US 5925-7125MHz, or European 5925-6425MHz, or parts thereof); on unlicensed spectrum, NR -U's design should ensure fairness with other systems that are already working on these unlicensed spectrums, such as WiFi. The principle of fairness is that the impact of NR-U on systems that have been deployed on unlicensed spectrum (for example, WiFi) cannot exceed the impact between these systems.

In order to ensure fair coexistence between systems on unlicensed spectrum, energy detection can be used as a basic coexistence mechanism. The general energy detection mechanism is the LBT mechanism. The basic principle of the mechanism is that the base station or terminal (transmitting end) needs to listen for a period of time according to regulations before transmitting data on the unlicensed spectrum. If the result of the listening indicates that the channel is idle, the transmitting end can transmit data to the receiving end. If the listening result indicates that the channel is in an occupied state, the transmitting end needs to back off for a period of time according to regulations before continuing to listen to the channel until the channel listening result is idle before transmitting data to the receiving end.

In unlicensed frequency bands, licensed spectrum assisted access (Licensed Assisted Access, LAA) can be used. The specific LTE-LAA unlicensed frequency band channel access process is introduced below.

For downlink data transmission, in the unlicensed frequency band, the base station needs to perform LBT first; in LAA, the priority of channel access can be determined by Table 1:

Table 1

Table 1 shows the priority of channel access, where Mp is related to the channel listening time for channel access. Specifically, the base station may first perform channel sensing for Td time, where Td=16us+Mp×9us.

CWmin, p and CWmax, p are related to the random listening channel time during channel access. Specifically, when the base station listens to the channel for Td time and is idle, it needs to listen to the channel again N times, each with a duration of 9 us. Where N is a random number from 0 to CWp, and CWmin,p≤CWp≤Cwmax,p.

Tmcot,p is the longest time for the base station to occupy the channel after it has seized the channel. It is related to the channel priority adopted by the base station. For example, if the priority is 1, the channel will be occupied for 2ms at most after the channel is successfully monitored.

In summary, for terminal equipment, the base station needs to transmit data to the terminal equipment within the MCOT time. If the base station does not seize the channel, that is, outside the MCOT time, the terminal equipment will not receive the scheduling from the base station to the terminal equipment. data.

For BWP, there can be at most one activated downlink BWP and one activated uplink BWP at a time. The network device can configure at most 4 uplink BWPs and at most 4 downlink BWPs for the connected terminal. For FDD systems, there is no displayed correspondence between the upstream BWP and the downstream BWP. For example, the network can configure 4 uplink BWPs (indexes are 0, 1, 2, 3) and 4 downlink BWPs (0, 1, 2, 3) for a connected terminal, and the currently activated uplink BWP index can be 0, The index of the currently activated downlink BWP can be 1. If the downlink BWP is switched to another BWP through the Downlink Control Information (DCI) command, for example, the currently activated downlink BWP 1 is switched to the downlink BWP 2, the uplink BWP can be maintained constant.

The terminal device may only support one activated downlink BWP. The base station (gNB) supports the transmission of a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) on the entire downlink BWP, and may also support the transmission of the PDSCH on part of the subbands on the downlink BWP.

The terminal device may be configured with CORESET and SS, where CORESET and SS may define one or more PDCCH candidates, and the terminal device may detect the PDCCH in the first or more PDCCH candidates.

The SS can be a common search space (Common Search Space, CSS) or a specific search space (Specific Search Space, USS), depending on the configuration of the network device. Among them, CSS is generally used for terminal equipment to blindly check and schedule the PDCCH of public downlink information, such as system messages, paging messages, random access response (Random Access Response, RAR), etc.; USS is generally used for terminal equipment to blindly check and schedule terminals PDCCH for device-specific data.

CSS can be of the following types:

1) The type 0 PDCCH CSS set on the primary cell of the master cell group (Master Cell Group, MCG), which is configured by the PDCCH configuration system information block 1 (pdcch-ConfigSIB1) in the master information block (Mster Information Block, MIB) signaling. ) Field configuration, or by the search space system information block 1 (searchSpaceSIB1) field configuration in the PDCCH configuration common (PDCCH-ConfigCommon) signaling, the search space zero (searchSpaceZero) field configuration in the PDCCH-ConfigCommon, used to configure the system information wireless The format of the Downlink Control Information (DCI) of the cyclic redundancy check (CRC) scrambled by the Network Temporary Identity (System Information Radio Network Temporary Identity, SI-RNTI).

2) The PDCCH CSS set of type 0A on the primary cell of the MCG, which is configured by the searchSpaceOtherSystemInformation field in the PDCCH-ConfigCommon signaling, and is used for the DCI format of the CRC scrambled by the SI-RNTI.

3) The type 1 PDCCH CSS set on the primary cell of the MCG, which is configured by the random access search space (ra-SearchSpace) field in the PDCCH-ConfigCommon signaling, and is used by the random access wireless network temporary identification (Random Access) field. Radio Network Temporary Identifier (RA-RNTI) or Temporary Cell Radio Network Temporary Identifier (Temporary Cell Radio Network Temporary Identifier, TC-RNTI) scrambled CRC DCI format.

4) The Type 2 PDCCH CSS set on the primary cell of the MCG, which is configured by the paging SearchSpace field in the PDCCH-ConfigCommon signaling, and is used by the paging Radio Network Temporary Identifier, P-RNTI) DCI format of scrambled CRC.

5) The type 3 PDCCH CSS set on the primary cell of the MCG, which is configured by the SearchSpace field in the PDCCH configuration (PDCCH-Config) signaling with the search space type (searchSpaceType) = common (common), which is used by the interrupt ( INT)-RNTI (INT-RNTI), Slot Format Indifiation-RNTI (SFI-RNTI), Transmit Power Control-Physical Uplink Shared Channel-Wireless Network Temporary Identification (Transmit Power Control-Physical Uplink Shared Channel-RNTI, TPC-PUSCH-RNTI), Transmit Power Control-Physical Uplink Control Channel-Radio Network Temporary Identifier (Transmit Power Control-Physical Uplink Control Channel-RNTI, TPC-PUCCH-RNTI), or TPC-Sounding Reference Signal (Sounding Reference Signal, SRS)-RNTI (TPC-SRS-RNTI) scrambled CRC DCI format, or, when only used for the primary cell, used for the cell radio network temporary identifier (Cell Radio Network Temporary Identifier, C- RNTI), Modulation and Coding Scheme (MCS)-C-RNTI (MCS-C-RNTI), DCI format of CRC scrambled by Configured Scheduling (CS)-RNTICS-RNTI(s).

The USS can be: USS set, configured by the SearchSpace field in the PDCCH-Config signaling with searchSpaceType=ue-Specific, used for C-RNTI, MCS-C-RNTI, semi-persistent (semi persistent, sp)-channel state Information (channel state information, CSI)-RNTI (SP-CSI-RNTI), or CS-RNTI(s) scrambled CRC DCI format.

On a configured downstream BWP, the network device can configure up to 3 CORESET and up to 10 SS. An SS can be associated with a CORESET.

Among them, the main configuration parameters of SS are as follows:

For each downlink BWP configured for the terminal device in the serving cell, the higher layer provides the terminal device with less than or equal to 10 search space sets (that is, search space), where, for each search space set in the S search space sets , The terminal device is configured by the search space field as follows:

-The search space set index s provided by the search space Id (searchSpaceId) field, 0≤s<40;

-The association between the search space set s and CORESET p provided by the control Resource Set Id (controlResourceSetId) field;

-The PDCCH monitoring period of the k _s time slot and the PDCCH monitoring offset of the o _s time slot provided by the monitoringSlotPeriodicityAndOffset (monitoringSlotPeriodicityAndOffset) field;

-The PDCCH monitoring pattern in the time slot provided by the monitoring Symbols (monitoringSymbolsWithinSlot) field indicates the first symbol in the time slot used for PDCC monitoring;

-The duration of the Ts (T _s ＜k _s ) time slot provided by the duration field, indicating the number of time slots in the search space s;

-Each Control Channel Element (CCE) provided by the aggregation level 1 (aggregationLevel1), aggregation level 2 (aggregationLevel2), aggregation level 4 (aggregationLevel4), aggregation level 8 (aggregationLevel8), aggregation level 16 (aggregationLevel16) fields ) PDCCH candidates of aggregation level L

The number of is used for aggregation level 1, aggregation level 2, aggregation level 4, aggregation level 8, and aggregation level 16;

-The indication provided by the search space type (searchSpaceType) field is used to indicate whether the search space set is a CSS or a USS set;

-If the search space set is a CSS set

-Instructions provided by DCI format 0-0- and format 1-0 (dci-Format0-0-AndFormat1-0) to monitor PDCCH candidates of DCI format 0_0 and DCI format 1_0;

-Instructions provided by the DCI format 2-0 (dci-Format2-0) field to monitor DCI format 2_0 and PDCCH candidates corresponding to the CCE aggregation level;

-An indication provided by the DCI format 2-1 (dci-Format2-1) field to monitor PDCCH candidates in DCI format 2_1;

-Instructions provided by the DCI format 2-2 (dci-Format2-2) field to monitor PDCCH candidates in DCI format 2-2;

-Instructions provided by the DCI format 2-3 (dci-Format2-3) field to monitor PDCCH candidates in DCI format 2_3;

-If the search space set is the USS set,

The indication provided by the DCI format (dci-Formats) field is to monitor any PDCCH candidates in DCI format 0_0, format 1_0, format 0_1, and format 1_1.

The terminal device can blindly detect the potential PDCCH in the SS. However, on a BWP, the maximum number of times the terminal device can blindly detect the PDCCH is limited, which can be determined according to Table 2:

Table 2

However, because it is not certain which LBT subband will succeed before the network transmits data, the network device will configure a corresponding PDCCH blind detection area (that is, CORESET and SS) on each LBT subband. However, due to the uncertainty of the channel, the number of blind checks of the UE in all configured CORESET and SS may exceed the maximum number of blind checks, which is the value in Table 2. If CORESET is configured according to the most conservative number of blind checks And SS, for example, the number of blind detections combined with CORESET and SS configured on each LBT subband does not exceed the maximum number of times, but this will lead to the number of blind detections if only one subband (or not all subbands are available) is available Too little, and fail to make full use of PDCCH configuration resources, resulting in waste of resources.

Therefore, the embodiments of the present application provide the following solutions, which can reduce the waste of resources.

The method for detecting PDCCH provided by the embodiment of the present application will be described in detail below in conjunction with FIG. 2.

As shown in FIG. 2, a schematic flowchart of a method 200 for detecting PDCCH according to an embodiment of the present application is shown, and the method 200 may include steps 210-220.

214. The terminal device determines the first CORESET configuration from multiple CORESET configurations for the available subbands in the downlink BWP configured on the unlicensed spectrum carrier. The CORESET configuration does not limit the absolute position of the frequency domain resource, and the available The subband is the subband for which the network device performs LBT successfully.

In the embodiment of this application, the terminal device determines the CORESET configuration for the available subbands in the downlink BWP configured on the unlicensed spectrum carrier, that is, the subband in the downlink BWP configured on the unlicensed spectrum carrier by the terminal device , Before determining the CORESET configuration, first determine the subbands that have successfully executed LBT through the network device. For the subbands that successfully perform LBT on the network device, the terminal device will perform the CORESET configuration.

The first CORESET configuration in the embodiment of this application can be one CORESET configuration or multiple CORESET configurations. When the first CORESET configuration is multiple CORESET configurations, the multiple CORESET configurations are collectively configured on an unlicensed spectrum carrier. The available subbands in the downlink BWP perform resource configuration.

In the embodiments of this application, the available subbands can be all subbands in the downlink BWP configured on the unlicensed spectrum carrier, or part of the downlink BWP configured on the unlicensed spectrum carrier, and this application will not do this. Specific restrictions.

In the embodiment of the present application, the CORESET configuration may refer to the configuration of CORESET. A CORESET configuration can be a configuration for one CORESET or a configuration for multiple CORESETs.

In addition, the multiple CORESET configurations involved in the embodiments of the present application do not limit the absolute position of frequency domain resources, that is, the information about frequency domain resources in the multiple CORESET configurations only indicates the frequency domain length of the corresponding CORESET, not Will indicate the absolute frequency domain position of the CORESET. In the embodiment of the present application, the frequency domain length defined by each CORESET configuration in the multiple CORESET configurations may be the same or different.

It should be understood that, for the time domain information in the various CORESET configurations in the embodiments of the present application, the CORESET configuration can indicate the time domain length of the corresponding CORESET, and can also indicate the absolute time domain position of the CORESET. Among the multiple CORESET configurations, all CORESET configurations can indicate time domain information, or part of CORESET configurations can indicate time domain information. The time domain length of each CORESET configuration in the multiple CORESET configurations may be the same or different, which is not specifically limited in this application.

In the embodiment of the present application, the CORESET configuration can be associated with the SS configuration (the SS configuration can be a configuration for the SS), and for each CORESET configuration configured by the associated SS, the associated SS configuration can indicate the number of detections of each CORESET configuration. Among them, the detection times of each of the multiple CORESET configurations associated with the SS configuration may be the same or different.

It should be understood that, in order to understand the resource configuration in the system, the network device may also perform step 210, so that the resource location for detecting the first PDCCH on the available subband can be determined subsequently according to the first CORESET configuration.

Optionally, in some embodiments, the network device determines the first CORESET configuration from multiple CORESET configurations for subbands available in the downlink BWP configured on the unlicensed spectrum carrier, where the CORESET configuration is not limited The absolute location of the frequency domain resource, and the available subband is a subband for which the network device successfully performs LBT.

216. Based on the first CORESET configuration, the terminal device determines to detect the resource location of the first PDCCH on the available subband, and the first PDCCH is the PDCCH used to schedule the terminal device.

In the embodiment of the present application, after the terminal device determines the first CORESET configuration from the multiple CORESET configurations, the terminal device determines and detects the resource location of the first PDCCH on the available subband for data transmission.

The resource location of the first PDCCH may be on one subband of the available subband, or on multiple subbands of the available subband. For example, as shown in Figure 3, if the available subband in the downlink BWP is subband 1, the terminal device can determine the resource location for detecting the first PDCCH on subband 1 based on the first CORESET configuration; if available in the downlink BWP The subbands are subband 1 and subband 2, and the terminal device can determine the resource location for detecting the first PDCCH on subband 1 and subband 2 based on the first CORESET configuration.

Similarly, in order to understand the resource configuration in the system, the network device can also perform steps 210-212, so that subsequent network devices can detect the resource location of the first PDCCH on the determined available subband and send the first PDCCH to the terminal device. .

Optionally, in some embodiments, the method 200 may also include steps 210-212.

210. The network device determines the first CORESET configuration from multiple CORESET configurations for the available subbands in the downlink BWP configured on the unlicensed spectrum carrier, where the absolute position of the frequency domain resource is not defined in the CORESET configuration. The available subbands are subbands for which the network device performs LBT successfully.

212. Based on the first CORESET configuration, the network device determines a resource location for detecting a first PDCCH on the available subband, where the first PDCCH is a PDCCH used to schedule the terminal device.

It should be understood that the sequence number of the above-mentioned steps is not the order in which the terminal device and the network device perform the steps in the system. For example, the network device can execute steps 210 and 212 simultaneously with the steps 214 and 216 in the terminal device, or the network device The device first executes steps 210-212 and the terminal device executes 214-216, or the terminal device executes 214-216 and then the network device executes steps 210-212, or the network device executes step 210 first, and the terminal device executes step 214 again. Step 212 is executed, and the terminal device executes step 216 again, which is not specifically limited in this application.

220. Based on the determined resource location, the terminal device detects the first PDCCH.

In the embodiment of the present application, after the terminal device determines the resource location, it can start to detect the first PDCCH. If the first PDCCH is detected, the terminal device can receive the PDSCH or send the PUSCH based on the first PDCCH.

In the method for detecting PDCCH provided by the embodiments of the present application, the first CORESET configuration is dynamically selected from a variety of CORESET configurations that do not limit the absolute position of frequency domain resources by determining the subband available in the downlink BWP. The resource location of the PDCCH is detected on the available subbands, so that the CORESET configuration can be flexibly selected, so that the number of blind detections of the terminal device can be maximized, and the utilization rate of the PDCCH resources can be improved.

Optionally, in some embodiments, according to the available subbands, the terminal device determines the first CORESET configuration corresponding to the available subbands from among multiple CORESET configurations.

In the embodiment of the present application, after the terminal device determines the available subbands in the downlink BWP configured on the unlicensed spectrum carrier, the first CORESET configuration may be determined according to the available subbands.

For example, it can be determined according to the number of available subbands, or can be determined according to the frequency domain length of the available subbands.

Taking the determination of the first CORESET configuration according to the number of available subbands as an example, suppose multiple CORESET configurations include three CORESET configurations, namely CORESET configuration 1, CORESET configuration 2, and CORESET configuration 3. The downstream BWP subband includes three subbands, That is, subband 1, subband 2, and subband 3.

When the terminal device determines that the downlink BWP subband 1 is available, the terminal device can determine from the three CORESET configurations CORESET configuration 1 for resource configuration, CORESET configuration 2 for resource configuration, and CORESET configuration 3 for resource configuration Configuration.

If the terminal device determines that the downlink BWP subband 1 and subband 2 are available, the terminal device can determine the CORESET configuration 1 to configure the resources of subband 1 and subband 2 from the three CORESET configurations, or it can determine the CORESET configuration 2 to subband 1 Perform resource configuration with subband 2, or select CORESET configuration 1 to configure resources for subband 1, while CORESET configuration 2 performs resource configuration for subband 2, which is not specifically limited in this application.

It should be understood that in the above resource configuration process, the number of blind checks of the SS configuration associated with the first CORESET configuration determined should not exceed the maximum number of blind checks allowed by the terminal device.

For example, if the maximum number of blind checks allowed by the terminal device is 20, when the terminal device determines that the downlink BWP subband 1 is available, CORESET configuration 1 is determined from the three CORESET configurations for resource configuration. At this time, CORESET configuration 1 is associated with The number of blind checks configured in SS should be less than or equal to 20. If the number of blind checks of the SS configuration associated with CORESET configuration 1 is greater than 20, for example 25 times, in this case, the extra 5 times of the SS associated with CORESET configuration 1 will not be performed again, that is, CORESET configuration 1 The number of blind inspections associated with the SS configuration should have been blind inspection 25 times. Since the maximum allowable number of blind inspections for the terminal device is 20 times, 5 blind inspections out of the 25 blind inspections associated with CORESET configuration 1 will no longer be possible. To proceed, resulting in a waste of resources.

It can be understood that if the terminal device determines that multiple downlink subbands are available, the total number of blind detection times of the SS configuration associated with the multiple CORESET configurations selected should be less than the maximum number of blind detection times allowed by the terminal device. For example, if the maximum number of blind checks allowed by the terminal device is 20, when the terminal device determines that the downlink BWP subband 1 and subband 2 are available, if the terminal device selects CORESET configuration 1 to configure resources for subband 1, and CORESET configuration 2 pairs Subband 2 performs resource configuration. In this case, the sum of the number of blind checks of the SS configuration associated with CORESET configuration 1 and the number of blind checks of the SS configuration associated with CORESET configuration 2 should not exceed 20 times. Among them, the number of blind checks for the SS configuration associated with CORESET configuration 1 and the number of blind checks for the SS configuration associated with CORESET configuration 2 can both be 10 times, or the number of blind checks for the SS configuration associated with CORESET configuration 1 is 8 times, the number of blind checks of the SS configuration associated with CORESET configuration 2 is 12 or 10 times, which is not specifically limited in this application, and the terminal device can dynamically select the CORESET configuration when selecting the CORESET configuration.

It should be understood that the number of blind inspections or the number of subbands listed in the embodiments of the present application are only exemplary descriptions and should not be specifically limited to the present application.

In the embodiment of this application, the maximum number of blind checks allowed by the terminal device may be the maximum number of blind checks allowed by the terminal device to detect the first PDCCH (that is, scheduling PDSCH or PUSCH), if the preset on the terminal device is to allow the first PDCCH to be detected The maximum number of blind checks for the PDCCH and the second PDCCH, the terminal device may subtract the number of blind checks for detecting the second PDCCH based on the maximum number of blind checks to obtain the terminal device's permission to detect the first PDCCH (that is, schedule PDSCH or PUSCH) Maximum number of blind inspections.

In the method for detecting PDCCH provided by the embodiments of the present application, since the number of blind checks indicated by each CORESET configuration does not exceed the maximum number of blind checks allowed by the terminal device, the terminal device determines to detect the first PDCCH on the available subband. When resource location, CORESET can be arbitrarily configured for the available subbands to reduce the number of configurations.

Optionally, in some embodiments, the first CORESET configuration is determined from the multiple CORESET configurations according to the available subbands and the correspondence between subbands and CORESET configurations.

In the embodiments of the present application, a CORESET configuration may correspond to one sub-band or multiple sub-bands. In an embodiment, multiple CORESET configurations include three CORESET configurations (CORESET configuration 1, CORESET configuration 2, and CORESET configuration 3) configurations, and the downstream BWP subband includes three subbands, namely subband 1, subband 2. And subband 3 as an example. In this case, CORESET configuration 1 can correspond to subband 1, CORESET configuration 2 corresponds to subband 2, and CORESET configuration 3 corresponds to subband 3. If subband 1 and subband 2 are available, the network device can use CORESET configuration 1 and CORESET configuration 2.

In another embodiment, multiple CORESET configurations include three CORESET (CORESET configuration 1, CORESET configuration 2, and CORESET configuration 3) configurations, and the downstream BWP subband includes three subbands, namely subband 1, subband Take 2 and subband 3 as an example. CORESET configuration 1 can correspond to subband 1, subband 2 or subband 3 respectively; CORESET configuration 2 can correspond to subband 1 and subband 2, subband 2 and subband 3, and subband 1 and subband 3; CORESET3 It can correspond to subband 1, subband 2, and subband 3. If subband 1 and subband 2 are available, the network device can adopt CORESET configuration 2.

In the embodiment of this application, when determining the first CORESET configuration, the network device and the terminal device can be determined based on the same rule, or the network device can determine the first CORESET configuration from multiple CORESET configurations, and then determine the first CORESET configuration. The configuration sends indication information to the terminal device through the available subband, instructing the terminal device to use the first CORESET configuration to determine the resource location.

Optionally, in some embodiments, the network device sends indication information on the available subbands, and the indication information is used to instruct the terminal device to use the first CORESET configuration among multiple CORESET configurations to determine the resource location.

After receiving the instruction information sent by the network device, the terminal device uses the first CORESET configuration from the multiple CORESET configurations to determine the resource location based on the detected instruction information on the available subband.

In the embodiment of the present application, when the terminal device determines the first CORESET configuration from the multiple CORESET configurations, the determination may be made based on the indication information sent by the network device on the available subband.

Optionally, in some embodiments, the indication information is carried in a common PDCCH.

In the embodiment of the present application, the indication information can be carried in the public PDCCH. In this case, the status corresponding to each subband can be shared, so that other terminal devices can determine the resource location based on the learned subband status information.

For example, in a system, the network may carry data transmission to multiple terminal devices. If the indication information is placed in the public PDCCH, all terminal devices associated with the network can understand the CORESET configuration to facilitate other terminal devices The resource location can be determined according to other CORESET configurations.

Of course, optionally, in some embodiments, the indication information in the embodiments of the present application may also indicate the determination of the resource location of the first PDCCH on multiple available subbands based on the first CORESET configuration, and the indication information is carried in On one of the multiple available sub-bands.

In the embodiment of this application, after the network device determines the first CORESET configuration from multiple CORESET configurations, the indication information may directly indicate that the first CORESET configuration is determined based on the first CORESET configuration to detect the resource location of the first PDCCH on the available subband. The resource location of the first PDCCH detected on the available subband is sent to the terminal device, and the terminal device detects the first PDCCH at the determined resource location.

In the embodiment of the present application, the indication information for determining the resource location of the first PDCCH to be detected on the available subband may be carried on one subband of the multiple available subbands. For example, for multiple subbands including 3 subbands, if the indication information is carried in the available subband 1, the corresponding indication information indicates that the resource location of the first PDCCH is determined based on the first CORESET configuration, and the terminal device is based on the indication of the indication information It is determined to detect the resource location of the first PDCCH on the available subband, and then the first PDCCH is detected on the determined resource location. It should be understood that the indication information for determining the resource location for detecting the first PDCCH on the available subband may be located only on subband 1, or only on subband 2, or on both subband 1 and subband 2. The application does not make specific restrictions on this.

Optionally, in some embodiments, the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each subband in part of the available subbands.

In the embodiment of the present application, the frequency domain length indicated by the first CORESET configuration may cover at least part of the frequency domain resources of each subband in the part of the available subbands.

For example, if the terminal device determines that the downlink BWP subband 1 is available, the terminal device can determine from the three CORESET configurations that the frequency domain length indicated by the CORESET configuration selected by CORESET configuration 1 can cover at least part of the frequency domain resources of subband 1.

If the terminal device determines that the downlink BWP subband 1 and subband 2 are available, the terminal device can determine the CORESET configuration 1 from the three CORESET configurations. In this case, the frequency domain length indicated by the first CORESET configuration can only cover the subband 1 At least part of the frequency domain resources may also cover at least part of the frequency domain resources of subband 2, or at least part of the frequency domain resources of subband 1 and subband 2 at the same time, which is not specifically limited in this application.

When multiple subbands of the downlink BWP are available, optionally, in some embodiments, the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each of the multiple available subbands.

In the embodiment of this application, if the terminal device determines that the downlink BWP subband 1 and subband 2 are available, the terminal device can determine the CORESET configuration 1 from the three CORESET configurations to configure PDCCH resources for subband 1 and subband 2. In this case Below, it is possible that the frequency domain length indicated by CORESET configuration 1 can only cover part of the frequency domain resources of subband 1, but cannot cover the frequency domain resources of subband 2. Therefore, when the terminal device selects the CORESET configuration, whether the frequency domain length indicated by the CORESET configuration to be selected can cover at least part of the frequency domain of each subband in the available subbands can also be selected as a reference condition.

If the terminal device determines that the downlink BWP subband 1 and subband 2 are available, when selecting the first CORESET configuration, select the CORESET configuration that can cover subband 1 and subband 2. For example, the frequency range of subband 1 is 0-20 MHz, and the frequency range of subband 2 is 20-40. If the frequency domain length indicated by the first CORESET configuration is to cover at least each subband of subband 1 and subband 2, Part of the frequency domain resources, from a variety of CORESET configurations, select a configuration with a frequency domain length greater than 20MHz, for example, 21MHz, 30MHz, etc., so that the determined first CORESET configuration can cover each of the two available subbands At least part of the frequency domain range of the band.

In some cases, the network device and the terminal device can determine multiple CORESET configurations according to preset unified regulations, or after the network device determines multiple CORESET configurations, they can send instructions to the terminal device to indicate the determined multiple CORESET configurations.

Optionally, in some embodiments, as shown in FIG. 4, the method 200 may further include steps 222-224.

222. The network device sends configuration information to the terminal device, where the configuration information is used to indicate the multiple CORESET configurations.

260. The terminal device receives the configuration information sent by the network side

In the embodiment of the present application, after determining multiple CORESET configurations, the network device can indicate the multiple CORESET configurations to the terminal device using indication information, and the terminal device then determines the first CORESET configuration according to the multiple CORESET configurations indicated.

Optionally, in some embodiments, as shown in FIG. 5, the method 200 may further include steps 226-228.

226. The network device indicates that the subband is available through the second PDCCH of the available subband, where the second PDCCH is a common PDCCH.

228. The terminal device determines the available subband in the BWP according to the detection result of the second PDCCH in each subband in the BWP.

In the embodiment of the present application, the network device may indicate that the subband is available through the second PDCCH of the subband whose LBT operation is successful, and the terminal device then determines the available subband in the BWP according to the detection result of the second PDCCH.

For example, for subband 1, if the network device successfully performs the LBT operation, the second PDCCH can be sent on the subband 1. The terminal device detects the second PDCCH on the subband 1, indicating that the network device can occupy the subband 1. The terminal device can blindly detect the first PDCCH on this subband 1.

The embodiment of the present application also provides a method for detecting PDCCH. As shown in FIG. 6, the method 600 may include steps 610-620.

610. The network device determines to detect the resource location of the first PDCCH on the available subband in the BWP of the downlink bandwidth part configured on the unlicensed spectrum carrier, where the first PDCCH is a PDCCH used to schedule the terminal device, and the available The sub-band of is the sub-band that the network device executes the successful LBT after listening.

612. The network device sends instruction information to the terminal device, where the instruction information is used by the terminal device to determine a resource location for detecting a first PDCCH on the available subband, where the first PDCCH is used to schedule the terminal PDCCH of the device.

In the embodiment of the present application, after determining the available subband, the network device may send indication information to the terminal device for the terminal device to determine the resource location of the first PDCCH on the subband.

614. The terminal device detects the indication information from the network device on the downlink BWP subband configured by the unlicensed spectrum carrier.

616. When the indication information is detected on the subband, the terminal device determines, according to the indication of the indication information, a resource location for detecting a first PDCCH on the subband, and the first PDCCH is used For scheduling the PDCCH of the terminal device.

In this embodiment of the present application, if the terminal device detects the indication information on the subband, it can determine that the subband is available. At this time, the indication information can be used for the terminal device to determine that the subband is available, and can also be used for the terminal device to determine the resource location for detecting the first PDCCH on the subband.

Alternatively, in the embodiment of the present application, the terminal device may determine that the subband is available according to other information, and when determining that the subband is available, detect the indication information on the available subband. At this time, the indication information may not be used for the terminal device to determine that the subband is available, but for the terminal device to determine the resource location of the first PDCCH on the subband.

In this embodiment of the application, for the subband for which no indication information is detected, the resource location for detecting the first PDCCH on the subband may be determined according to the pre-configured CORESST, or it may be determined on the subband according to a preset rule. Detect the resource location of the first PDCCH.

The indication information may indicate the resource location of the first PDCCH detected on all or part of the available subbands of the downlink BWP. For example, if the available subband of the downlink BWP is subband 1, the indication information may indicate the resource position of the first PDCCH on all frequency domains of subband 1 of the downlink BWP, or may indicate the first PDCCH resource location on part of the frequency domain of subband 1. A PDCCH resource location.

In the embodiments of this application, the available subbands can be all subbands in the downlink BWP configured on the unlicensed spectrum carrier, or part of the downlink BWP configured on the unlicensed spectrum carrier, and this application will not do this. Specific restrictions.

620. Based on the determined resource location, the terminal device detects the first PDCCH.

After the terminal device determines the resource location, it can start to detect the state of the first PDCCH. If the first PDCCH is in an idle state, the terminal device can let the first PDCCH control the PDSCH for data transmission.

In the method for detecting the PDCCH provided in the embodiments of the present application, the resource location for detecting the first PDCCH is dynamically determined according to the instructions of the network device for the available subbands in the downlink BWP, so that the resource location of the first PDCCH can be flexibly selected and detected Therefore, it is possible to maximize the number of blind checks of the terminal equipment, and to improve the utilization rate of PDCCH resources.

It should be understood that, in the embodiment of the present application, the network device and the terminal device may determine the resource location for detecting the first PDCCH on the subband according to a predetermined rule.

Optionally, in some embodiments, the indication information is carried in the common PDCCH.

In the embodiment of the present application, the indication information can be carried in the public PDCCH. In this case, the status corresponding to each subband can be shared, so that other terminal devices can determine the resource location based on the learned subband status information.

For example, in a system, the network may carry data transmission to multiple terminal devices. If the indication information is placed in a public PDCCH, all terminal devices associated with the network can understand the status of the PDCCH so as to facilitate other The terminal device can determine the resource location according to the learned subband status information.

Optionally, in some embodiments, the indication information indicates that the first CORESET configuration among multiple CORESET configurations is used to determine the resource location, and the absolute location of the frequency domain resource is not defined in the CORESET configuration.

According to the first CORESET configuration, the terminal device determines to detect the resource location of the first PDCCH on the subband.

In the embodiment of the present application, the instruction information sent by the network device to the terminal device may instruct the terminal device to use the first CORESET configuration among multiple CORESET configurations to determine the resource location. After detecting the indication information, the terminal device adjusts and determines the resource location for detecting the first PDCCH according to the indication of the indication information sent by the network device.

The first CORESET configuration in the embodiment of this application can be one CORESET configuration or multiple CORESET configurations (for example, there are multiple subbands available, and one CORESET configuration can correspond to one subband or multiple subbands). When the first CORESET configuration is multiple CORESET configurations, the multiple CORESET configurations collectively configure resources for the subbands in the downlink BWP configured on the unlicensed spectrum carrier.

In addition, the multiple CORESET configurations involved in the embodiments of the present application do not limit the absolute position of frequency domain resources, that is, the information about frequency domain resources in the multiple CORESET configurations only indicates the frequency domain length of the CORESET configuration, not Will indicate the absolute frequency domain position of the CORESET configuration. In the embodiment of the present application, the frequency domain length of each CORESET configuration in multiple CORESET configurations may be the same or different.

It should be understood that, for the time domain information of the multiple CORESET configurations in the embodiments of the present application, the CORESET configuration may indicate the time domain length of the corresponding CORESET, and may also indicate the absolute time domain position of the corresponding CORESET. Among the multiple CORESET configurations, all CORESET configurations can indicate time domain information, or part of CORESET configurations can indicate time domain information. The time domain length of each CORESET configuration in the multiple CORESET configurations may be the same or different, which is not specifically limited in this application.

It should be understood that in the above resource configuration process, the number of blind checks of the SS configuration associated with the first CORESET configuration determined should not exceed the maximum number of blind checks allowed by the terminal device.

For example, if the maximum number of blind checks allowed by the terminal device is 20, when the terminal device determines that the downlink BWP subband 1 is available, the network device instructs to determine the first from multiple CORESET configurations based on the maximum number of blind checks allowed by the terminal device of 20. CORESET configuration. For example, the network device instructs to determine CORESET configuration 1 for resource configuration from the three CORESET configurations. At this time, the number of blind checks for the SS configuration associated with CORESET configuration 1 should be less than or equal to 20. If the number of blind checks of the SS configuration associated with CORESET configuration 1 is greater than 20 times, for example 25 times, in this case, the extra 5 times of the SS configuration associated with CORESET configuration 1 will not be performed again, that is, CORESET The number of blind inspections of the SS configuration associated with configuration 1 should have been blind inspections 25 times. Since the maximum allowable number of blind inspections for terminal equipment is 20 times, 5 blind inspections out of the 25 blind inspections associated with CORESET configuration 1 Will proceed again, leading to a waste of resources.

It is understandable that if the terminal device determines that multiple downlink subbands are available, the total number of blind detections of the SS configurations associated with the multiple CORESET configurations selected should be less than or equal to the maximum number of blind detections allowed by the terminal device. For example, if the maximum number of blind checks allowed by the terminal device is 20, when the terminal device determines that the downlink BWP subband 1 and subband 2 are available, if the terminal device selects CORESET configuration 1 to configure resources for subband 1, and CORESET configuration 2 pairs Subband 2 performs resource configuration. In this case, the sum of the number of blind checks of the SS configuration associated with CORESET configuration 1 and the number of blind checks of the SS configuration associated with CORESET configuration 2 should not exceed 20 times. Among them, the number of blind checks for the SS configuration associated with CORESET configuration 1 and the number of blind checks for the SS configuration associated with CORESET configuration 2 can both be 10 times, or the number of blind checks for the SS configuration associated with CORESET configuration 1 is 8 times, the number of blind checks of the SS configuration associated with CORESET configuration 2 is 12 or 10 times, which is not specifically limited in this application, and the terminal device can dynamically select the CORESET configuration when selecting the CORESET configuration.

It should be understood that the number of blind inspections or the number of subbands listed in the embodiments of the present application are only exemplary descriptions and should not be specifically limited to the present application.

Optionally, in some embodiments, a second CORESET configuration is determined based on the first CORESET configuration and the offset. The second CORESET configuration defines the absolute position of the frequency domain resource; the terminal device according to the second CORESET configuration, Determine the resource location for detecting the first PDCCH on the subband.

It is understandable that the first CORESET configuration in the embodiment of the present application does not limit the absolute position of the frequency domain resource. Combining the position offset of the first CORESET configuration relative to the bandwidth part, the second CORESET with the absolute frequency domain position can be determined. Configuration, after determining the second CORESET configuration, the terminal device then determines the resource location for detecting the first PDCCH on the subband according to the second CORESET configuration with a fixed frequency domain location.

The offset in the embodiment of this application can be a parameter in the CORESET configuration, or can be configured independently of CORESET. For example, it can be indicated to the terminal device through the indication information mentioned in this application, or it can be configured to the terminal through RRC signaling Device or preset on the terminal device.

Optionally, in some embodiments, as shown in FIG. 7, the method 600 may further include steps 622-624.

622. The network device sends configuration information to the terminal device, where the configuration information is used to indicate the multiple CORESET configurations.

624: The terminal device receives the configuration information sent by the network side.

In the embodiment of the present application, after determining multiple CORESET configurations, the network device can indicate the multiple CORESET configurations to the terminal device using indication information, and the terminal device then determines the first CORESET configuration according to the multiple CORESET configurations indicated.

Optionally, in some embodiments, the indication information indicates that the resource location for detecting the first PDCCH on a plurality of the available subbands is determined based on the first CORESET configuration, wherein the indication information is carried in multiple subbands. On one of the sub-bands.

In the embodiment of the present application, after the network device or the terminal device determines the first CORESET configuration from multiple CORESET configurations, the indication information may directly indicate that the resource location for detecting the first PDCCH on the available subband is determined based on the first CORESET configuration.

In the embodiment of this application, after the network device determines the first CORESET configuration from multiple CORESET configurations, the indication information may directly indicate that the first CORESET configuration is determined based on the first CORESET configuration to detect the resource location of the first PDCCH on the available subband. The resource location of the first PDCCH detected on the available subband is sent to the terminal device, and the terminal device detects the first PDCCH according to the determined resource location.

In the embodiment of the present application, the indication information for determining the resource location of the first PDCCH to be detected on the available subband may be carried on one subband of the multiple available subbands. For example, for multiple subbands including 3 subbands, if the indication information is carried in the available subband 1. The indication information indicates that it is determined to detect the resource location of the first PDCCH based on the first CORESET configuration, and the terminal device determines to detect the resource location of the first PDCCH on the available subband according to the indication of the indication information, and then detects the first PDCCH on the determined resource location. PDCCH. It should be understood that the indication information for determining the resource location for detecting the first PDCCH on the available subband may be located only on subband 1, or only on subband 2, or on both subband 1 and subband 2. The application does not make specific restrictions on this.

Optionally, in some embodiments, the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each subband in the multiple subbands.

In the embodiment of the present application, the first CORESET configuration may be single or multiple, and the frequency domain length indicated by the first CORESET configuration may cover at least part of the frequency domain resources of each subband in the multiple subbands. For example, if the terminal device performs CORESET configuration on the downstream BWP subband, the terminal device can determine CORESET configuration 1 for resource configuration from the three CORESET configurations, or select CORESET configuration 2 for resource configuration, or CORESET configuration 3 Perform resource configuration. In this case, the frequency domain length indicated by the selected CORESET configuration can cover at least part of the frequency domain resources of subband 1.

If the terminal device performs CORESET configuration on the downlink BWP subband 1 and subband 2, the terminal device can determine the CORESET configuration from the three CORESET configurations, and configure the resources for subband 1 and subband 2. In this case, in this case It is possible that the frequency domain length indicated by CORESET configuration 1 can only cover part of the frequency domain resources of subband 1, or only cover part of the frequency domain resources of subband 2. Therefore, when the terminal device selects the CORESET configuration, whether the frequency domain length indicated by the CORESET configuration to be selected can cover at least part of the frequency domain of each of the multiple subbands can also be selected as a reference condition.

If the terminal device performs CORESET configuration on the downlink BWP subband 1 and subband 2, when selecting the first CORESET configuration, select the CORESET configuration that can cover subband 1 and subband 2. For example, the frequency range of subband 1 is 0-20 MHz, and the frequency range of subband 2 is 20-40. If the frequency domain length indicated by the first CORESET configuration is to cover at least each subband of subband 1 and subband 2, Part of the frequency domain resources, from a variety of CORESET configurations, select a configuration with a frequency domain length greater than 20MHz, for example, 21MHz, 30MHz, etc., so that the determined first CORESET configuration can cover each of the two available subbands At least part of the frequency domain range of the band.

In general, in order to maximize resource utilization, the network will configure each subband with the largest resources possible in a pre-configured manner when configuring resources. However, in this case, it may be When multiple subbands are available at the same time, the number of blind checks for all configurations will exceed the maximum number of blind checks allowed by the terminal device. Therefore, in order to make reasonable use of resources, an embodiment of the present application also provides a method for detecting PDCCH, as shown in Figure 8. As shown, the method 800 may include steps 810-816.

810. The network device detects the resource location of the first PDCCH from the terminal device pre-configured for the available subband for the available subband in the downlink BWP configured on the unlicensed spectrum carrier, and determines the terminal The resource location of the first PDCCH to be detected by the device.

In the embodiment of the present application, the network device may determine the resource location to be detected from the pre-configured first PDCCH resource location, that is, after the network device configures the PDCCH area on each of the multiple subbands, The network device can adjust the resource location of the PDCCH pre-configured on the available subband, so as to improve resource utilization.

812. The terminal device determines the resource location to be detected from the resource locations for detecting the first PDCCH pre-configured for the available subbands for the available subbands in the downlink BWP configured on the unlicensed spectrum carrier .

In the embodiment of the present application, the terminal device may determine the resource location to be detected from the pre-configured first PDCCH resource location, that is, the network device configures the candidate resource location of the PDCCH on each of the multiple subbands Later, the terminal device can select the resource location of the PDCCH pre-configured on the available subband, so as to improve resource utilization.

In the embodiment of this application, when the terminal device determines the resource location to be detected, it can also be determined according to the instruction information sent by the network device to the terminal device. The corresponding instruction information may instruct the network device to determine whether the PDCCH is pre-configured on the available subband. The selection result of the candidate resource location is not specifically limited in this application.

814: According to the resource location of the first PDCCH to be detected by the terminal device, the network device sends the first PDCCH to the terminal device.

In the embodiment of the present application, after determining the resource location of the first PDCCH to be detected, the network device sends the first PDCCH to the terminal device.

816: Based on the resource location to be detected, the terminal device detects the first PDCCH.

After the terminal device re-determines the resource location to be detected, the terminal device detects the first PDCCH based on the resource location to be detected.

In the method for detecting PDCCH provided by the embodiments of the present application, the available subbands in the downlink BWP are dynamically determined from the pre-configured resource locations to detect the PDCCH resource locations to be detected on the available subbands, thereby achieving flexibility. Selecting the resource location to be detected can maximize the number of blind detections of the terminal device and improve the utilization rate of PDCCH resources.

Optionally, in some embodiments, based on the maximum number of blind checks allowed by the terminal device, the terminal device determines the resource location to be detected from the resource locations for detecting the first PDCCH pre-configured for the available subbands.

In the embodiment of the present application, the terminal device may determine the resource location to be detected from the pre-configured resource locations for detecting the first PDCCH based on the maximum number of blind checks allowed by the terminal device.

For example, if the maximum number of blind detections allowed by the terminal device is 20, the network device configures it based on the maximum number of detections that can be performed for each subband 10 times. If all three subbands included in the bandwidth part are available, then these three subbands are available. The number of detections will be greater than the maximum number of blind detections allowed by the terminal device. Therefore, before the terminal device performs detection, the pre-configured resource location for detecting the first PDCCH can be re-determined. Band 1 is tested 10 times, sub-band 2 is tested 5 times, and sub-band 3 is tested 5 times to improve resource utilization.

It should be understood that the number of blind inspections or the number of subbands listed in the embodiments of the present application are only exemplary descriptions and should not be specifically limited to the present application.

Optionally, in some embodiments, the pre-configured resource location is determined based on the CORESET configuration and search space pre-configured for the subband.

In the embodiment of the present application, the network device may configure the resource location of the subband included in the bandwidth part in advance, where the network device may determine the resource location of the subband according to the CORESET configuration and the search space.

Optionally, in some embodiments, as shown in FIG. 9, the method 800 may further include steps 818-820.

818. The network device indicates that the subband is available through the second PDCCH of the available subband, where the second PDCCH is a common PDCCH.

820. The terminal device determines the available subband in the BWP according to the detection result of the second PDCCH in each subband in the BWP.

In the embodiment of the present application, the network device may indicate that the subband is available through the second PDCCH of the subband whose LBT operation is successful, and the terminal device then determines the available subband in the BWP according to the detection result of the second PDCCH.

For example, for subband 1, the network device successfully performs the LBT operation, then the second PDCCH can be sent on the subband 1. The terminal device detects the second PDCCH on the subband 1, and the specification network device may occupy the subband 1. The terminal device can blindly detect the first PDCCH on this subband 1.

The method embodiments of the present application are described in detail above with reference to Figs. 1 to 9, and the apparatus embodiments of the present application are described below with reference to Figs. 10 to 20. The apparatus embodiments and the method embodiments correspond to each other, so the details are not described in detail. For part, please refer to the method embodiments of the previous parts.

FIG. 10 is an apparatus 1000 for detecting PDCCH according to an embodiment of the present application. The apparatus may include a determining module 1010 and a detecting module 1020.

The determining module 1010 is configured to determine the first CORESET configuration from multiple CORESET configurations for the available subbands in the downlink BWP configured on the unlicensed spectrum carrier, where the absolute position of the frequency domain resource is not defined in the CORESET configuration, The available subbands are subbands for which the network device successfully executes LBT.

The determining module 1010 is further configured to determine, based on the first CORESET configuration, a resource location for detecting a first PDCCH on the available subband, where the first PDCCH is a PDCCH used to schedule the terminal device.

The detection module 1020 is configured to detect the first PDCCH based on the determined resource location.

Optionally, in some embodiments, the determining module 1010 is specifically configured to determine the first CORESET configuration corresponding to the available subband from multiple CORESET configurations according to the available subband.

Optionally, in some embodiments, the first CORESET configuration is determined from the multiple CORESET configurations according to the available subbands and the correspondence between subbands and CORESET configurations.

Optionally, in some embodiments, the determining module 1010 is specifically configured to determine the first CORESET configuration from among the multiple CORESET configurations based on the indication information detected on the available subbands, so The indication information is used to instruct to adopt the first CORESET configuration among the multiple CORESET configurations to determine the resource location.

Optionally, in some embodiments, the indication information is carried in a common PDCCH.

Optionally, in some embodiments, the indication information indicates that the resource location for detecting the first PDCCH on a plurality of the available subbands is determined based on the first CORESET configuration, wherein the indication information is carried in multiple subbands. One of the available sub-bands.

Optionally, in some embodiments, the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each subband in part of the available subbands.

Optionally, in some embodiments, the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each subband in the plurality of available subbands.

Optionally, in some embodiments, as shown in FIG. 11, the apparatus 1000 may further include a receiving module 1030.

The receiving module 1030 is configured to receive configuration information sent by the network side, where the configuration information is used to indicate the multiple CORESET configurations.

Optionally, in some embodiments, the number of blind checks indicated by each CORESET configuration does not exceed the maximum number of blind checks allowed by the terminal device.

Optionally, in some embodiments, the determining module 1010 is further configured to: determine the available subbands in the BWP according to the detection result of the second PDCCH in each subband in the BWP, where the The second PDCCH is a common PDCCH.

FIG. 12 is an apparatus 1200 for detecting PDCCH according to an embodiment of the present application. The apparatus may include a detecting module 1210 and a determining module 1220.

The detection module 1210 is configured to detect the indication information from the network device on the downlink BWP subband configured by the unlicensed spectrum carrier.

The determining module 1220 is configured to, when the indication information is detected on the subband, determine the resource location for detecting the first PDCCH on the subband according to the indication of the indication information, and the first PDCCH is used For scheduling the PDCCH of the terminal device.

The detecting module 1210 is further configured to detect the first PDCCH based on the determined resource location.

Optionally, in some embodiments, the indication information is carried in a common PDCCH.

Optionally, in some embodiments, the indication information indicates that the first CORESET configuration among multiple CORESET configurations is used to determine the resource location, and the absolute location of the frequency domain resource is not limited in the CORESET configuration; the determining module 1220 specifically It is used to determine the resource location for detecting the first PDCCH on the subband according to the first CORESET configuration.

Optionally, in some embodiments, the determining module 1220 is specifically configured to determine a second CORESET configuration based on the first CORESET configuration and the offset, and the second CORESET configuration defines the absolute position of the frequency domain resource ; According to the second CORESET configuration, determine the resource location for detecting the first PDCCH on the subband.

Optionally, in some embodiments, as shown in FIG. 13, the apparatus 1200 further includes a receiving module 1230.

The receiving module 1230 is configured to receive configuration information sent by the network side, where the configuration information is used to indicate the multiple CORESET configurations.

Optionally, in some embodiments, the number of blind checks indicated by each CORESET configuration does not exceed the maximum number of blind checks allowed by the terminal device.

Optionally, in some embodiments, the indication information indicates that the resource location for detecting the first PDCCH on a plurality of subbands is determined based on the first CORESET configuration, wherein the indication information is carried in a plurality of subbands. On one of the sub-bands.

Optionally, in some embodiments, the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of the subbands in the plurality of subbands.

FIG. 14 is an apparatus 1400 for detecting PDCCH according to an embodiment of the present application. The apparatus may include a determining module 1410 and a detecting module 1420.

The determining module 1410 is configured to determine the resource location to be detected from the resource location for detecting the first PDCCH pre-configured for the available subband for the available subband in the downlink BWP configured on the unlicensed spectrum carrier.

The detection module 1420 is configured to detect the first PDCCH based on the resource location to be detected.

Optionally, in some embodiments, the determining module 1410 is specifically configured to: based on the maximum number of blind checks allowed by the terminal device, from the resource positions for detecting the first PDCCH pre-configured for the available subbands , Determine the resource location to be detected.

Optionally, in some embodiments, the pre-configured resource location is determined based on the CORESET and search space pre-configured for the subband.

Optionally, in some embodiments, the detection module 1420 is further configured to: determine the available subbands in the BWP according to the detection result of the second PDCCH in each subband in the BWP, where the The second PDCCH is a common PDCCH.

FIG. 15 is an apparatus 1500 for detecting PDCCH according to an embodiment of the present application. The apparatus 1500 may include a determining module 1510 and a sending module 1520.

The determining module 1510 is configured to determine the first CORESET configuration from multiple CORESET configurations for the available subbands in the downlink BWP configured on the unlicensed spectrum carrier, where the absolute position of the frequency domain resource is not defined in the CORESET configuration, The available subbands are subbands for which the network device successfully performs LBT;

The determining module 1510 is further configured to determine, based on the first CORESET configuration, a resource location for detecting a first PDCCH on the available subband, where the first PDCCH is a PDCCH used to schedule the terminal device;

The sending module 1520 is configured to send the first PDCCH to the terminal device at the determined resource location.

Optionally, in some embodiments, the determining module 1510 is specifically configured to determine the first CORESET configuration corresponding to the available subband from multiple CORESET configurations according to the available subband .

Optionally, in some embodiments, the first CORESET configuration is determined from the multiple CORESET configurations according to the available subbands and the correspondence between subbands and CORESET configurations.

Optionally, in some embodiments, the sending module 1520 is further configured to send indication information on the available subbands, where the indication information is used to instruct the terminal device to use all of the multiple CORESET configurations. The first CORESET configuration is used to determine the resource location.

Optionally, in some embodiments, the indication information is carried in a common PDCCH.

Optionally, in some embodiments, the indication information indicates that the resource location for detecting the first PDCCH on a plurality of the available subbands is determined based on the first CORESET configuration, wherein the indication information is carried in multiple subbands. On one of the sub-bands.

Optionally, in some embodiments, the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each subband in part of the available subbands.

Optionally, in some embodiments, the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each subband in the plurality of available subbands.

Optionally, in some embodiments, the sending module 1520 is further configured to send configuration information to the terminal device, where the configuration information is used to indicate the multiple CORESET configurations.

Optionally, in some embodiments, the number of blind checks indicated by each CORESET configuration does not exceed the maximum number of blind checks allowed by the terminal device.

Optionally, in some embodiments, the apparatus further includes an indication module 1530, configured to indicate the available subband through the second PDCCH of the available subband, where the second PDCCH is a common PDCCH .

FIG. 16 is an apparatus 1600 for detecting PDCCH according to an embodiment of the present application. The apparatus 1600 may include a sending module 1610.

The sending module 1610 is configured to send instruction information to a terminal device, where the instruction information is used to instruct the terminal device to determine the resource location for detecting the first PDCCH on the subband according to the instruction of the instruction information. A PDCCH is a PDCCH used to schedule the terminal equipment;

The sending module 1610 is further configured to send the first PDCCH to the terminal device, so that the terminal device detects the first PDCCH based on the determined resource location.

Optionally, in some embodiments, the indication information is carried in a common PDCCH.

Optionally, in some embodiments, the indication information indicates that the first CORESET configuration among multiple CORESETs is used to determine the resource location, and the CORESET configuration does not limit the absolute location of the frequency domain resource.

Optionally, in some embodiments, the sending module 1610 is further configured to send configuration information to the terminal device, where the configuration information is used to indicate the multiple CORESET configurations.

Optionally, in some embodiments, the number of blind checks indicated by each CORESET configuration does not exceed the maximum number of blind checks allowed by the terminal device.

Optionally, in some embodiments, the indication information indicates that the resource location for detecting the first PDCCH on a plurality of subbands is determined based on the first CORESET configuration, wherein the indication information is carried in a plurality of subbands. On one of the sub-bands.

Optionally, in some embodiments, the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each of the multiple subbands.

FIG. 17 is an apparatus 1700 for detecting PDCCH according to an embodiment of the present application. The apparatus 1700 may include a determining module 1710 and a sending module 1720.

The determining module 1710 is configured to detect the resource location of the first PDCCH from the terminal device pre-configured for the available subband for the available subband in the downlink BWP configured on the unlicensed spectrum carrier, and determine that the terminal device is waiting Detect the resource location of the first PDCCH.

The sending module 1720 is configured to send the first PDCCH to the terminal device according to the resource location of the first PDCCH to be detected by the terminal device.

Optionally, in some embodiments, the determining module 1710 is specifically configured to: based on the maximum number of blind checks allowed by the terminal device, the network device detects the first PDCCH pre-configured for the available subband. In the resource location, determine the resource location to be detected.

Optionally, in some embodiments, the pre-configured resource location is determined based on the CORESET and search space pre-configured for the subband.

Optionally, in some embodiments, the determining module 1710 is further configured to determine the available subbands in the BWP according to the detection result of the second PDCCH in each subband in the BWP, where the first The second PDCCH is a public PDCCH.

Optionally, in some embodiments, the apparatus 1700 further includes: an indication module 1730, configured to indicate that the available subband is available through the second PDCCH of the available subband, wherein the second PDCCH It is a public PDCCH.

An embodiment of the present application also provides a communication device 1800, as shown in FIG. 18, including a processor 1810 and a memory 1820, the memory is used to store a computer program, the processor is used to call and run the computer stored in the memory The program executes the method according to any one of claims xx to xx.

The processor 1810 can call and run a computer program from the memory 1820 to implement the method in the embodiment of the present application.

The memory 1820 may be a separate device independent of the processor 1810, or may be integrated in the processor 1810.

Optionally, as shown in FIG. 18, the communication device 1800 may further include a transceiver 1830, and the processor 1810 may control the transceiver 1830 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.

Among them, the transceiver 1830 may include a transmitter and a receiver. The transceiver 1830 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 1800 may specifically be a network device of an embodiment of the application, and the communication device 1800 may implement the corresponding process implemented by the network device in each method of the embodiment of the application. For brevity, details are not repeated here. .

Optionally, the communication device 1800 may specifically be a mobile terminal/terminal device of an embodiment of the present application, and the communication device 1800 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. For the sake of brevity , I won’t repeat it here.

FIG. 19 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 1900 shown in FIG. 19 includes a processor 1910, and the processor 1910 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 19, the chip 1900 may further include a memory 1920. The processor 1910 can call and run a computer program from the memory 1920 to implement the method in the embodiment of the present application.

The memory 1920 may be a separate device independent of the processor 1910, or may be integrated in the processor 1910.

Optionally, the chip 1900 may further include an input interface 1930. The processor 1910 can control the input interface 1930 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 1900 may further include an output interface 1940. The processor 1910 can control the output interface 1940 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in the various methods of the embodiment of the present application. For brevity, details are not described herein again.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. For brevity, here is No longer.

It should be understood that the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip.

It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) ) And Direct Rambus RAM (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be understood that the foregoing memory is exemplary but not restrictive. For example, the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.

FIG. 20 is a schematic structural diagram of a communication system 2000 provided by an embodiment of the present application. As shown in FIG. 20, the communication system 2000 includes a terminal device 2010 and a network device 2020.

Wherein, the terminal device 2010 can be used to implement the corresponding function implemented by the terminal device in the above method, and the network device 2020 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, it will not be repeated here. .

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application , For the sake of brevity, I will not repeat it here.

The embodiments of the present application also provide a computer program product, including computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, it is not here. Repeat it again.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For brevity, I won't repeat them here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , I won’t repeat it here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application. When the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims (95)

1. A method for detecting physical downlink control channel PDCCH, characterized in that it comprises:

   The terminal device determines the first CORESET configuration from the multiple control resource set CORESET configurations for the available subbands in the BWP of the downlink bandwidth part configured on the unlicensed spectrum carrier, where the absolute position of the frequency domain resources is not defined in the CORESET configuration , The available sub-bands are sub-bands for which the network device performs LBT after listening first;

   Based on the first CORESET configuration, the terminal device determines to detect the resource location of the first PDCCH on the available subband, where the first PDCCH is a PDCCH used to schedule the terminal device;

   Based on the determined resource location, the terminal device detects the first PDCCH.
2. The method according to claim 1, wherein the determining the first CORESET configuration from a plurality of CORESET configurations comprises:

   According to the available subband, the terminal device determines the first CORESET configuration corresponding to the available subband from the multiple CORESET configurations.
3. The method according to claim 2, wherein the first CORESET configuration is determined from the multiple CORESET configurations according to the available subbands and the correspondence between subbands and CORESET configurations.
4. The method according to claim 1, wherein the determining the first CORESET configuration from a plurality of CORESET configurations comprises:

   Based on the indication information detected on the available subbands, the first CORESET configuration is determined from the multiple CORESET configurations, and the indication information is used to instruct to adopt the first CORESET configuration among the multiple CORESET configurations. A CORESET configuration determines the location of the resource.
5. The method according to claim 4, wherein the indication information is carried in a public PDCCH.
6. The method according to claim 4 or 5, wherein the indication information indicates that the resource location for detecting the first PDCCH on a plurality of the available subbands is determined based on the first CORESET configuration, wherein the The indication information is carried on one of the multiple available subbands.
7. The method according to any one of claims 1 to 6, wherein the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each subband in part of the available subbands.
8. The method according to any one of claims 1 to 6, wherein the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each of the multiple available subbands.
9. The method according to any one of claims 1 to 8, wherein the method further comprises:

   The terminal device receives configuration information sent by the network side, where the configuration information is used to indicate the multiple CORESET configurations.
10. The method according to any one of claims 1 to 9, characterized in that the number of blind checks indicated by each CORESET configuration does not exceed the maximum number of blind checks allowed by the terminal device.
11. The method according to any one of claims 1 to 10, wherein the method further comprises:

    Determine the available subbands in the BWP according to the detection results of the second PDCCH in each subband in the BWP, where the second PDCCH is a common PDCCH.
12. A method for detecting physical downlink control channel PDCCH, characterized in that it comprises:

    The terminal equipment detects the indication information from the network equipment on the BWP subband of the downlink bandwidth part configured by the unlicensed spectrum carrier;

    When the indication information is detected on the subband, the terminal device determines the resource location for detecting the first PDCCH on the subband according to the indication of the indication information, and the first PDCCH is used for scheduling The PDCCH of the terminal device;

    Based on the determined resource location, the terminal device detects the first PDCCH.
13. The method according to claim 12, wherein the indication information is carried in a public PDCCH.
14. The method according to claim 12 or 13, wherein the indication information indicates that the first CORESET configuration in the CORESET configuration of multiple control resource sets is used to determine the resource location, and the frequency domain is not limited in the CORESET configuration. Absolute location of resources;

    The determining by the terminal device to detect the resource location of the first PDCCH on the subband according to the indication of the indication information includes:

    According to the first CORESET configuration, the terminal device determines to detect the resource location of the first PDCCH on the subband.
15. The method according to claim 14, wherein the determining, according to the first CORESET configuration, by the terminal device to detect the resource location of the first PDCCH on the subband, comprises:

    Determine a second CORESET configuration based on the first CORESET configuration and the offset, where the absolute position of the frequency domain resource is defined in the second CORESET configuration;

    The terminal device determines, according to the second CORESET configuration, the resource location for detecting the first PDCCH on the subband.
16. The method according to claim 14 or 15, wherein the method further comprises:

    The terminal device receives configuration information sent by the network side, where the configuration information is used to indicate the multiple CORESET configurations.
17. The method according to any one of claims 14 to 16, wherein the number of blind checks indicated by each CORESET configuration does not exceed the maximum number of blind checks allowed by the terminal device.
18. The method according to any one of claims 13 to 17, wherein the indication information indicates that a resource location for detecting the first PDCCH on a plurality of the subbands is determined based on the first CORESET configuration, wherein: The indication information is carried on one of the multiple subbands.
19. The method according to claim 18, wherein the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of the subbands in the plurality of subbands.
20. A method for detecting physical downlink control channel PDCCH, characterized in that it comprises:

    For the available subbands in the BWP of the downlink bandwidth part configured on the unlicensed spectrum carrier, the terminal device determines the resource location to be detected from the resource locations for detecting the first PDCCH pre-configured for the available subbands ；

    Based on the resource location to be detected, the terminal device detects the first PDCCH.
21. The method according to claim 20, wherein the terminal device determines the resource location to be detected from the resource locations for detecting the first PDCCH pre-configured for the available subband, comprising:

    Based on the maximum number of blind checks allowed by the terminal device, the terminal device determines the resource location to be detected from the resource locations for detecting the first PDCCH pre-configured for the available subband.
22. The method according to claim 20 or 21, wherein the pre-configured resource location is determined based on a control resource set CORESET and a search space pre-configured for the subband.
23. The method according to any one of claims 20 to 22, wherein the method further comprises:

    Determine the available subbands in the BWP according to the detection results of the second PDCCH in each subband in the BWP, where the second PDCCH is a common PDCCH.
24. A method for detecting physical downlink control channel PDCCH, characterized in that it comprises:

    The network device determines the first CORESET configuration from the multiple control resource set CORESET configurations for the available subbands in the BWP of the downlink bandwidth part configured on the unlicensed spectrum carrier, where the absolute location of the frequency domain resources is not defined in the CORESET configuration , The available subband is a subband for which the network device successfully performs LBT;

    Based on the first CORESET configuration, the network device determines to detect a resource location of a first PDCCH on the available subband, where the first PDCCH is a PDCCH used to schedule a terminal device;

    At the determined resource location, the network device sends the first PDCCH to the terminal device.
25. The method according to claim 24, wherein the determining the first CORESET configuration from a plurality of CORESET configurations comprises:

    According to the available subband, the network device determines the first CORESET configuration corresponding to the available subband from among multiple CORESET configurations.
26. The method according to claim 25, wherein the first CORESET configuration is determined from the multiple CORESET configurations according to the available subbands and the correspondence between subbands and CORESET configurations.
27. The method according to any one of claims 24 to 26, wherein the method further comprises:

    Sending indication information on the available subband, where the indication information is used to instruct the terminal device to adopt the first CORESET configuration among the multiple CORESET configurations to determine the resource location.
28. The method according to claim 27, wherein the indication information is carried in a public PDCCH.
29. The method according to claim 27 or 28, wherein the indication information indicates that the resource location for detecting the first PDCCH on a plurality of the available subbands is determined based on the first CORESET configuration, wherein the The indication information is carried on one of the multiple available subbands.
30. The method according to any one of claims 24 to 29, wherein the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each subband in part of the available subbands.
31. The method according to any one of claims 24 to 29, wherein the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each of the multiple available subbands.
32. The method according to any one of claims 24 to 31, wherein the method further comprises:

    The network device sends configuration information to the terminal device, where the configuration information is used to indicate the multiple CORESET configurations.
33. The method according to any one of claims 24 to 32, wherein the number of blind checks indicated by each CORESET configuration does not exceed the maximum number of blind checks allowed by the terminal device.
34. The method according to any one of claims 24 to 33, wherein the method further comprises:

    The network device indicates that the subband is available through the second PDCCH of the available subband, where the second PDCCH is a common PDCCH.
35. A method for detecting physical downlink control channel PDCCH, characterized in that it comprises:

    The network device sends instruction information to the terminal device, where the instruction information is used by the terminal device to determine the resource location of the first PDCCH on the available subband in the BWP of the downlink bandwidth part configured on the unlicensed spectrum carrier, and the first The PDCCH is a PDCCH used to schedule the terminal device, and the available subbands are subbands for which the network device executes LBT after listening;

    The network device sends the first PDCCH to the terminal device.
36. The method according to claim 35, wherein the indication information is carried in a public PDCCH.
37. The method according to claim 35 or 36, wherein the indication information indicates that a first CORESET configuration in a plurality of control resource sets CORESET is used to determine the resource location, and frequency domain resources are not defined in the CORESET configuration Absolute position.
38. The method of claim 37, wherein the method further comprises:

    The network device sends configuration information to the terminal device, where the configuration information is used to indicate the multiple CORESET configurations.
39. The method according to claim 37 or 38, wherein the number of blind checks indicated by each CORESET configuration does not exceed the maximum number of blind checks allowed by the terminal device.
40. The method according to any one of claims 36 to 39, wherein the indication information indicates that the resource location for detecting the first PDCCH on a plurality of the available subbands is determined based on the first CORESET configuration, Wherein, the indication information is carried on one of the multiple available subbands.
41. The method according to claim 40, wherein the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each of the plurality of available subbands.
42. A method for detecting physical downlink control channel PDCCH, characterized in that it comprises:

    For the available subbands in the BWP of the downlink bandwidth part configured on the unlicensed spectrum carrier, the network equipment detects the resource location of the first PDCCH from the terminal equipment pre-configured for the available subbands, and determines the terminal The resource location of the first PDCCH to be detected by the device;

    According to the resource location of the first PDCCH to be detected by the terminal device, the network device sends the first PDCCH to the terminal device.
43. The method according to claim 42, wherein the network device determines the resource location to be detected from the resource location for detecting the first PDCCH pre-configured for the available subband, comprising:

    Based on the maximum number of blind checks allowed by the terminal device, the network device determines the resource location of the first PDCCH to be detected from the resource locations for detecting the first PDCCH pre-configured for the available subband.
44. The method according to claim 42 or 43, wherein the pre-configured resource location is determined based on a control resource set CORESET and a search space pre-configured for the subband.
45. The method according to any one of claims 42 to 44, wherein the method further comprises:

    The network device indicates that the subband is available through the second PDCCH of the available subband, where the second PDCCH is a common PDCCH.
46. A device for detecting physical downlink control channel PDCCH, characterized in that it comprises:

    The determining module is used to determine the first CORESET configuration from the multiple control resource set CORESET configurations for the available subbands in the BWP of the downlink bandwidth part configured on the unlicensed spectrum carrier, wherein the CORESET configuration does not limit the frequency domain The absolute location of the resource, the available subband is a subband for which the network device executes the LBT after listening first;

    The determining module is further configured to determine a resource location for detecting a first PDCCH on the available subband based on the first CORESET configuration, where the first PDCCH is a PDCCH used to schedule the terminal device;

    The detection module is configured to detect the first PDCCH based on the determined resource location.
47. The apparatus according to claim 46, wherein the determining module is specifically configured to determine the first subband corresponding to the available subband from among the multiple CORESET configurations according to the available subband. A CORESET configuration.
48. The device according to claim 47, wherein the first CORESET configuration is determined from the multiple CORESET configurations according to the available subbands and the correspondence between subbands and CORESET configurations.
49. The device according to claim 46, wherein the determining module is specifically configured to determine the first CORESET configuration from the multiple CORESET configurations based on the indication information detected on the available subband The indication information is used to instruct to adopt the first CORESET configuration among the multiple CORESET configurations to determine the resource location.
50. The apparatus according to claim 49, wherein the indication information is carried in a public PDCCH.
51. The apparatus according to claim 49 or 50, wherein the indication information indicates that the resource location for detecting the first PDCCH on a plurality of the available subbands is determined based on the first CORESET configuration, wherein the The indication information is carried on one of the multiple available subbands.
52. The apparatus according to any one of claims 46 to 51, wherein the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each subband in part of the available subbands.
53. The apparatus according to any one of claims 46 to 51, wherein the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each of the multiple available subbands.
54. The device according to any one of claims 46 to 53, wherein the device further comprises:

    The receiving module is configured to receive configuration information sent by the network side, where the configuration information is used to indicate the multiple CORESET configurations.
55. The apparatus according to any one of claims 46 to 54, wherein the number of blind checks indicated by each CORESET configuration does not exceed the maximum number of blind checks allowed by the terminal device.
56. The device according to any one of claims 46 to 55, wherein the determining module is further configured to:

    Determine the available subbands in the BWP according to the detection results of the second PDCCH in each subband in the BWP, where the second PDCCH is a common PDCCH.
57. A device for detecting physical downlink control channel PDCCH, characterized in that it comprises:

    The detection module is used to detect the indication information from the network equipment on the BWP subband of the downlink bandwidth part configured by the unlicensed spectrum carrier;

    The determining module is configured to, when the indication information is detected on the subband, determine the resource location for detecting the first PDCCH on the subband according to the indication of the indication information, and the first PDCCH is used for Scheduling the PDCCH of the terminal device;

    The detection module is further configured to detect the first PDCCH based on the determined resource location.
58. The apparatus according to claim 57, wherein the indication information is carried in a public PDCCH.
59. The device according to claim 57 or 58, wherein the indication information indicates that the first CORESET configuration in the CORESET configuration of multiple control resource sets is used to determine the resource location, and the CORESET configuration does not limit the frequency domain Absolute location of resources;

    The determining module is specifically used for:

    According to the first CORESET configuration, determine the resource location for detecting the first PDCCH on the subband.
60. The device according to claim 59, wherein the determining module is specifically configured to:

    Determine a second CORESET configuration based on the first CORESET configuration and the offset, where the absolute position of the frequency domain resource is defined in the second CORESET configuration;

    The terminal device determines, according to the second CORESET configuration, the resource location for detecting the first PDCCH on the subband.
61. The device according to claim 59 or 60, wherein the device further comprises:

    The receiving module is configured to receive configuration information sent by the network side, where the configuration information is used to indicate the multiple CORESET configurations.
62. The device according to any one of claims 59 to 61, wherein the number of blind checks indicated by each of the CORESET configurations does not exceed the maximum number of blind checks allowed by the terminal device.
63. The apparatus according to any one of claims 58 to 62, wherein the indication information indicates that a resource location for detecting the first PDCCH on a plurality of the subbands is determined based on the first CORESET configuration, wherein: The indication information is carried on one of the multiple subbands.
64. The device according to claim 63, wherein the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of the subbands in the plurality of subbands.
65. A device for detecting physical downlink control channel PDCCH, characterized in that it comprises:

    The determining module is configured to determine the resource location to be detected from the resource location of the first PDCCH pre-configured for the available subband for the available subband in the BWP of the downlink bandwidth part configured on the unlicensed spectrum carrier;

    The detection module is configured to detect the first PDCCH based on the resource location to be detected.
66. The device according to claim 65, wherein the determining module is specifically configured to:

    Based on the maximum number of blind checks allowed by the terminal device, the resource location to be detected is determined from the resource locations for detecting the first PDCCH pre-configured for the available subband.
67. The device according to claim 65 or 66, wherein the pre-configured resource location is determined based on a control resource set CORESET and a search space pre-configured for the subband.
68. The device according to any one of claims 65 to 67, wherein the determining module is further configured to:

    Determine the available subbands in the BWP according to the detection results of the second PDCCH in each subband in the BWP, where the second PDCCH is a common PDCCH.
69. A device for detecting physical downlink control channel PDCCH, characterized in that it comprises:

    The determining module is used to determine the first CORESET configuration from the multiple control resource set CORESET configurations for the available subbands in the BWP of the downlink bandwidth part configured on the unlicensed spectrum carrier, wherein the CORESET configuration does not limit the frequency domain The absolute location of the resource, and the available subband is a subband for which the network device successfully performs LBT;

    The determining module is further configured to determine, based on the first CORESET configuration, a resource location for detecting a first PDCCH on the available subband, where the first PDCCH is a PDCCH used to schedule a terminal device;

    The sending module is configured to send the first PDCCH to the terminal device at the determined resource location.
70. The device according to claim 69, wherein the determining module is specifically configured to:

    According to the available subband, the first CORESET configuration corresponding to the available subband is determined from a plurality of CORESET configurations.
71. The device according to claim 70, wherein the first CORESET configuration is determined from the multiple CORESET configurations according to the available subbands and the correspondence between the subbands and the CORESET configurations.
72. The device according to any one of claims 69 to 71, wherein the sending module is further configured to:

    Send indication information on the available subband, where the indication information is used to instruct the terminal device to use the first CORESET configuration among multiple CORESET configurations to determine the resource location.
73. The device according to claim 72, wherein the indication information is carried in a public PDCCH.
74. The apparatus according to claim 72 or 73, wherein the indication information indicates that the resource location for detecting the first PDCCH on a plurality of the available subbands is determined based on the first CORESET configuration, wherein the The indication information is carried on one of the multiple subbands.
75. The apparatus according to any one of claims 69 to 74, wherein the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each subband in part of the available subbands.
76. The device according to any one of claims 69 to 74, wherein the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each subband in the plurality of available subbands.
77. The apparatus according to any one of claims 69 to 76, wherein the sending module is further configured to send configuration information to the terminal device, and the configuration information is used to indicate the multiple CORESET configurations.
78. The device according to any one of claims 69 to 77, wherein the number of blind checks indicated by each of the CORESET configurations does not exceed the maximum number of blind checks allowed by the terminal device.
79. The device according to any one of claims 69 to 78, wherein the device further comprises:

    The indication module is configured to indicate that the available subband is available through the second PDCCH of the available subband, where the second PDCCH is a common PDCCH.
80. A device for detecting physical downlink control channel PDCCH, characterized in that it comprises:

    The sending module is configured to send indication information to the terminal device, where the indication information is used by the terminal device to determine the resource location of the first PDCCH on the available subband in the BWP of the downlink bandwidth part configured on the unlicensed spectrum carrier, so The first PDCCH is a PDCCH used to schedule the terminal device, and the available subband is a subband for which the network device performs a successful listening-and-speaking LBT;

    The sending module is further configured to send the first PDCCH to the terminal device.
81. The device according to claim 80, wherein the indication information is carried in a public PDCCH.
82. The device according to claim 80 or 81, wherein the indication information indicates that the first CORESET configuration in a plurality of control resource sets CORESET is used to determine the resource location, and the CORESET configuration does not define frequency domain resources Absolute position.
83. The device according to claim 82, wherein the sending module is further configured to:

    Sending configuration information to the terminal device, where the configuration information is used to indicate the multiple CORESET configurations.
84. The device according to claim 82 or 83, wherein the number of blind checks indicated by each of the CORESET configurations does not exceed the maximum number of blind checks allowed by the terminal device.
85. The apparatus according to any one of claims 81 to 84, wherein the indication information indicates that the resource location for detecting the first PDCCH on a plurality of the available subbands is determined based on the first CORESET configuration, Wherein, the indication information is carried on one of the multiple available subbands.
86. The apparatus according to claim 85, wherein the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each of the plurality of available subbands.
87. A device for detecting physical downlink control channel PDCCH, characterized in that it comprises:

    The determining module is configured to determine the terminal equipment from the terminal equipment pre-configured for the available subbands for the available subbands in the BWP of the downlink bandwidth part configured on the unlicensed spectrum carrier The resource location of the first PDCCH to be detected;

    The sending module is configured to send the first PDCCH to the terminal device according to the resource location of the first PDCCH to be detected by the terminal device.
88. The device according to claim 87, wherein the determining module is specifically configured to:

    Based on the maximum number of blind checks allowed by the terminal device, the network device determines the resource location of the first PDCCH to be detected from the resource locations for detecting the first PDCCH pre-configured for the available subband.
89. The device according to claim 87 or 88, wherein the pre-configured resource location is determined based on a control resource set CORESET and a search space pre-configured for the subband.
90. The device according to any one of claims 87 to 89, wherein the device further comprises:

    The indication module is configured to indicate that the available subband is available through the second PDCCH of the available subband, where the second PDCCH is a common PDCCH.
91. A communication device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 1 to 45 The method described in one item.
92. A chip, characterized by comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 45.
93. A computer-readable storage medium, characterized in that it is used to store a computer program that enables a computer to execute the method according to any one of claims 1 to 45.
94. A computer program product, characterized by comprising computer program instructions, which cause a computer to execute the method according to any one of claims 1 to 45.
95. A computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 45.

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