CN113170445A

CN113170445A - Method, device and communication equipment for detecting PDCCH

Info

Publication number: CN113170445A
Application number: CN201980074107.1A
Authority: CN
Inventors: 石聪; 林亚男; 吴作敏
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2021-07-23
Anticipated expiration: 2039-05-21
Also published as: WO2020232647A1; CN113170445B

Abstract

The application provides a method, a device and communication equipment for detecting a PDCCH, comprising the following steps: the method comprises the steps that a terminal device determines first CORESET configuration from multiple CORESET configurations aiming at usable sub-bands in downlink BWP configured on an unlicensed spectrum carrier, wherein the frequency domain resource absolute position is not limited in the CORESET configuration, and the usable sub-bands are sub-bands for which network devices successfully execute LBT; based on the first CORESET configuration, the terminal device, the first PDCCH is a PDCCH for scheduling the terminal device; based on the determined resource location, the terminal device detects the first PDCCH. According to the method provided by the embodiment of the application, the first CORESET configuration is dynamically selected from a plurality of CORESET configurations without limiting the absolute position of the frequency domain resource for the usable sub-band in the downlink BWP, so that the resource position of the PDCCH detected on the usable sub-band can be determined, the CORESET configuration can be flexibly selected, the maximization of the blind detection times of the terminal equipment can be achieved, and the utilization rate of the PDCCH resource can be improved.

Description

Method, device and communication equipment for detecting PDCCH

Technical Field

The present embodiments relate to the field of communications, and in particular, to a method, an apparatus, and a communication device for detecting a PDCCH.

Background

In a New Radio Unlicensed (NR-U), for a case that a Downlink Bandwidth part (BWP) includes multiple subbands, data may be transmitted in all or part of the subbands of the BWP, however, before the network device transmits data, it is not determined on which subband a Listen Before Talk (LBT) is successfully performed, so the network device configures a Physical Downlink Control Channel (PDCCH) blind detection region, i.e., a Control-Resource Set (core) and a Search Space (SS), on each subband.

Due to the uncertainty of the channel, if the number of blind tests of the blind test regions configured for all sub-bands by the network device exceeds the maximum allowed number of blind tests of the terminal device, the number of blind tests of the terminal device exceeds the maximum number of blind tests. If the blind detection regions are configured according to the most conservative number of blind detections, for example, the number of blind detections added up by the blind detection regions configured on each sub-band does not exceed the maximum number of times allowed by the terminal device, but this may cause too few blind detections if only one sub-band (or not all sub-bands) is available, and thus, the PDCCH cannot be fully utilized to configure resources, resulting in resource waste.

Therefore, how to fully utilize the PDCCH to configure resources is a problem to be solved to reduce the waste of resources.

Disclosure of Invention

The embodiment of the application provides a method, a device and communication equipment for detecting a PDCCH, which can reduce the waste of resources.

In a first aspect, a method for detecting a PDCCH is provided, including: the method comprises the steps that a terminal device determines first CORESET configuration from multiple CORESET configurations aiming at usable sub-bands in downlink BWP configured on an unlicensed spectrum carrier, wherein the frequency domain resource absolute position is not limited in the CORESET configuration, and the usable sub-bands are sub-bands for which network devices successfully execute LBT; based on the first CORESET configuration, the terminal device, the first PDCCH is a PDCCH for scheduling the terminal device; based on the determined resource location, the terminal device detects the first PDCCH.

In the method for detecting a PDCCH provided in the embodiment of the present application, for an available subband in a downlink BWP, a first CORESET configuration is dynamically selected from multiple CORESET configurations without limiting an absolute position of a frequency domain resource, so as to determine a resource position for detecting the PDCCH on the available subband, thereby flexibly selecting the CORESET configuration, so that the number of blind detections of a terminal device can be maximized, and the utilization rate of the PDCCH resource can be improved.

In a second aspect, a method for detecting a PDCCH is provided, including: the method comprises the steps that terminal equipment detects indication information from network equipment on a sub-band of downlink BWP configured by an unlicensed spectrum carrier; when the indication information is detected on the subband, the terminal equipment determines the resource position of detecting a first PDCCH on the subband according to the indication of the indication information, wherein the first PDCCH is used for scheduling the terminal equipment; based on the determined resource location, the terminal device detects the first PDCCH.

In the method for detecting a PDCCH provided in the embodiment of the present application, the resource location for detecting the first PDCCH is dynamically determined according to the indication of the network device for the subband available in the downlink BWP, so that the resource location for detecting the first PDCCH can be flexibly selected, and therefore, the number of blind detections of the terminal device can be maximized, and the utilization rate of the PDCCH resource can be improved.

In a third aspect, a method for detecting a PDCCH is provided, including: the method comprises the steps that the terminal equipment determines a resource position to be detected from a resource position for detecting a first PDCCH (physical downlink control channel) which is pre-configured for an available subband in a downlink BWP (BWP) configured on an unlicensed spectrum carrier; and the terminal equipment detects the first PDCCH based on the position of the resource to be detected.

In the method for detecting a PDCCH provided in the embodiment of the present application, the position of the resource to be detected of the PDCCH on the available subband is dynamically determined from the preconfigured resource positions for the available subband in the downlink BWP, so that the flexible selection of the position of the resource to be detected can be achieved, the maximization of the blind detection times of the terminal device can be achieved, and the utilization rate of the PDCCH resource can be improved.

In a fourth aspect, a method for detecting PDCCH is provided, comprising: the method comprises the steps that a network device determines a first CORESET configuration from a plurality of CORESET configurations aiming at usable sub-bands in downlink BWP configured on an unlicensed spectrum carrier, wherein the CORESET configurations do not define the absolute position of frequency domain resources, and the usable sub-bands are sub-bands for which the network device successfully executes LBT; based on the first CORESET configuration, the network device determines a resource location for detecting a first PDCCH on the available subband, wherein the first PDCCH is used for scheduling the terminal device; and the network equipment sends the first PDCCH to the terminal equipment on the determined resource position.

In a fifth aspect, a method for detecting a PDCCH is provided, including: the network equipment sends indication information to the terminal equipment, wherein the indication information is used for the terminal equipment to determine the resource position for detecting a first PDCCH on the subband, and the first PDCCH is used for scheduling the terminal equipment; and the network equipment sends the first PDCCH to the terminal equipment.

In a sixth aspect, a method for detecting PDCCH is provided, comprising: the method comprises the steps that network equipment determines a resource position of a first PDCCH to be detected by terminal equipment from a resource position of the first PDCCH detected by the terminal equipment which is configured for an available subband in downlink BWP configured on an unlicensed spectrum carrier; and the network equipment sends the first PDCCH to the terminal equipment according to the resource position of the first PDCCH to be detected by the terminal equipment.

In a seventh aspect, an apparatus for detecting a PDCCH is provided, which is configured to perform the method in any one or each implementation manner of the first to sixth aspects.

In an eighth aspect, a communication device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method of any one of the first aspect to the sixth aspect or the implementation manners thereof.

In a ninth aspect, there is provided a chip for implementing the method in any one of the first to sixth aspects or implementations thereof.

Specifically, the chip includes: a processor, configured to call and run the computer program from the memory, so that the device on which the chip is installed performs the method in any one of the first to sixth aspects or the implementation manners thereof.

A tenth aspect provides a computer-readable storage medium for storing a computer program for causing a computer to perform the method of any one of the first to sixth aspects or implementations thereof.

In an eleventh aspect, there is provided a computer program product comprising computer program instructions to cause a computer to perform the method of any one of the first to sixth aspects or implementations thereof.

In a twelfth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to sixth aspects or implementations thereof described above.

Drawings

Fig. 1 is a schematic diagram of an application scenario of the present application.

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

Fig. 3 is a schematic diagram of a plurality of sub-bands and a plurality of CORESET configurations provided by embodiments of the present application;

fig. 4 is another schematic flow chart of a method for detecting a PDCCH provided in an embodiment of the present application.

Fig. 5 is still another schematic flow chart of a method for detecting a PDCCH provided in an embodiment of the present application.

Fig. 6 is still another schematic flow chart of a method for detecting a PDCCH provided in an embodiment of the present application.

Fig. 7 is still another schematic flow chart of a method for detecting a PDCCH provided in an embodiment of the present application.

Fig. 8 is still another schematic flow chart of a method for detecting a PDCCH provided in an embodiment of the present application.

Fig. 9 is still another schematic flowchart of a method for detecting a PDCCH according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of an apparatus for detecting a PDCCH according to an embodiment of the present application.

Fig. 11 is another schematic structural diagram of an apparatus for detecting a PDCCH according to an embodiment of the present application.

Fig. 12 is a further schematic structural diagram of an apparatus for detecting a PDCCH provided in an embodiment of the present application.

Fig. 13 is a further schematic structural diagram of an apparatus for detecting a PDCCH according to an embodiment of the present application.

Fig. 14 is a further schematic structural diagram of an apparatus for detecting a PDCCH according to an embodiment of the present application.

Fig. 15 is a further schematic structural diagram of an apparatus for detecting a PDCCH according to an embodiment of the present application.

Fig. 16 is a further schematic structural diagram of an apparatus for detecting a PDCCH according to an embodiment of the present application.

Fig. 17 is a further schematic structural diagram of an apparatus for detecting a PDCCH according to an embodiment of the present application.

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

Fig. 19 is a schematic structural diagram of a chip provided in an embodiment of the present application.

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

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any creative effort, shall fall within the protection scope of the present application

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System.

Illustratively, a 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 referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or may be a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal device arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

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

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

Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. 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 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

For a clearer understanding of the present application, the following is a brief description of the related contents of non-authorization related to NR, so as to facilitate the subsequent understanding of the scheme of the present application. However, it should be understood that the following description is only for better understanding of the present application and should not be taken as limiting the present application in particular.

In a third Generation Partnership Project Radio Access Network (3rd Generation Partnership Project Radio Access Network, 3GPP RAN), NR may operate in an unlicensed frequency band, and specifically may include the following operation scenarios:

(1) a carrier aggregation scenario: a Primary serving Cell (PCell) is a licensed spectrum, and a Secondary serving Cell (SCell) is aggregated on an unlicensed spectrum by a carrier aggregation mode;

(2) double-connection working scene: the PCell is a Long Term Evolution (LTE) authorized spectrum, and the PScell is an NR unauthorized spectrum;

(3) independent working scene: the NR operates as an independent cell in unlicensed spectrum.

Generally, the operating Band (Band) of NR-U is 5GHz unlicensed spectrum and 6GHz unlicensed spectrum, (e.g., US 5925-; on unlicensed spectrum, the design of NR-U should guarantee fairness with other systems already operating on these unlicensed spectrum, such as WiFi and the like. The principle of fairness is that the impact of NR-U on systems already deployed on unlicensed spectrum (e.g., WiFi) cannot exceed the impact between these systems.

In order to ensure fairness coexistence between systems over unlicensed spectrum, energy detection may be used as a basic coexistence mechanism. A general energy detection mechanism is an LBT mechanism, and the basic principle of the mechanism is that a base station or a terminal (transmission end) needs to listen for a certain period of time according to a rule before transmitting data on an unlicensed spectrum. If the sensed result indicates that the channel is in an idle state, the transmitting end may transmit data to the receiving end. If the interception result indicates that the channel is in an occupied state, the transmission end needs to back off for a period of time according to the specification and then continues to intercept the channel until the channel interception result is in an idle state, and data can not be transmitted to the receiving end.

In the unlicensed band, Licensed Assisted Access (LAA) may be used. A specific access procedure of the unlicensed band channel of the LTE-LAA is described below.

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

TABLE 1

The priority of channel access is shown in table 1, where Mp is related to the listening channel time for performing channel access. Specifically, the base station may perform channel sensing for a time Td, where Td is 16us + Mp × 9 us.

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

Tmcot, p is the longest time that the base station occupies the channel after occupying the channel, and it has a relationship with the priority of the channel adopted by the base station, for example, if the priority is 1, the channel occupies the channel for 2ms at most after the channel interception is successful.

In summary, for the terminal device, it is necessary for the base station to transmit data to the terminal device within the MCOT time, and if the base station does not occupy the channel, that is, outside the MCOT time, the terminal device does not receive the scheduling data from the base station to the terminal device.

For BWP, there may be at most one active downstream BWP and one active upstream BWP at a time. The network device may configure the connected-state terminal with up to 4 upstream BWPs and up to 4 downstream BWPs. For FDD systems, there is no correspondence shown between upstream BWP and downstream BWP. For example, the network may configure 4 uplink BWPs (indexes are 0, 1, 2, 3, respectively) and 4 downlink BWPs (0, 1, 2, 3) for one connected terminal, where the currently activated uplink BWP index may be 0 and the currently activated downlink BWP index may be 1; if the Downlink BWP is switched to another BWP by a Downlink Control Information (DCI) instruction, for example, the currently activated Downlink BWP 1 is switched to the Downlink BWP 2, the uplink BWP may remain unchanged.

The terminal device may support only one active downlink BWP. A base station (gNB) supports transmission of a Physical Downlink Shared Channel (PDSCH) on the entire Downlink BWP, and may also support transmission of a PDSCH on a partial subband on the Downlink BWP.

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

The SS may be a Common Search Space (CSS) or a Specific Search Space (USS), depending on the configuration of the network device. The CSS is generally used for the terminal device to blindly detect a PDCCH for scheduling common downlink information, such as a system message, a paging message, a Random Access Response (RAR), and the like; the USS is generally used for the terminal device to blindly detect the PDCCH that schedules terminal device specific data.

CSS can be composed of the following:

1) a PDCCH CSS set of type 0 on a Master Cell of a Master Cell Group (MCG), which is configured by a PDCCH configuration System Information Block 1(PDCCH-ConfigSIB1) field in a Master Information Block (Mster Information Block, MIB) signaling or by a search space System Information Block 1 (searchblacesib 1) field in a PDCCH configuration common (PDCCH-ConfigCommon) signaling, a search space zero (searchbacezero) field in a PDCCH-ConfigCommon, and a Downlink Control Information (DCI) format for a Cyclic Redundancy Check (Cyclic Redundancy Check) code (CRC) scrambled by a System Information Radio Network Temporary Identity (SI-Identity) is configured.

2) PDCCH CSS set of type 0A on the primary cell of MCG, configured by the search space rest system information (searchspaceother systemlnformation) field in PDCCH-ConfigCommon signaling, for DCI format of CRC scrambled by SI-RNTI.

3) A PDCCH CSS set of type 1 on the primary Cell of the MCG, configured by a Random Access search space (RA-SearchSpace) field in PDCCH-ConfigCommon signaling, for a DCI format of CRC scrambled by a Random Access Radio Network Temporary Identifier (RA-RNTI) or a Temporary Cell Radio Network Temporary Identifier (TC-RNTI).

4) A PDCCH CSS set of type 2 on the primary cell of the MCG, configured by a paging search space (paging search space) field in PDCCH-ConfigCommon signaling, for a DCI format of a CRC scrambled by a paging Radio Network Temporary Identifier (P-RNTI).

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

The USS may be: a USS set configured by a SearchSpace field in PDCCH-Config signaling with searchSpaceType ue-Specific, a DCI format for CRC scrambled by C-RNTI, MCS-C-RNTI, semi-persistent (SP) -Channel State Information (CSI) -RNTI (SP-CSI-RNTI), or CS-RNTI(s).

On a configured downstream BWP, the network device may configure up to 3 CORESET and up to 10 SSs. One SS may be associated with one CORESET.

The main configuration parameters of the SS are as follows:

for each downlink BWP configured to the terminal device in the serving cell, the terminal device is provided with 10 or less search space sets (i.e. search spaces) by the higher layer, where for each of the S search space sets, the terminal device is configured by the search space field as follows:

-a search space set index s provided by a search space id (searchspaceid) field, 0 ≦ s < 40;

-an association between a set of search spaces s provided by a control resource set id (controlresourcesetid) field and CORESET p;

-k provided by a monitoring slot period and offset (monitongslotperiodicityandoffset) field_sPDCCH monitoring period and o of time slot_sPDCCH monitoring offset of a time slot;

-a PDCCH monitoring pattern within a slot provided by an intra-slot monitoring symbols (monitorngsymbols within slots) field indicating a first symbol within the slot for PDCC monitoring;

-Ts (T) provided by duration field_s＜k _s) The time length of the time slot indicates the number of the time slots existing in the search space s;

PDCCH candidates for each Control Channel Element (CCE) aggregation level L provided by aggregation level 1(aggregation level1), aggregation level 2(aggregation level2), aggregation level 4(aggregation level4), aggregation level 8(aggregation level8), aggregation level16 (aggregation level16) fields

Respectively for aggregation level1, aggregation level2, aggregation level4, polyA composite rating of 8 and an aggregate rating of 16;

-an indication provided by a search space type (searchSpaceType) field for indicating whether the search space set is a CSS or a USS set;

-if the search space set is a CSS set

-indications provided by DCI Format0-0-and Format1-0 (DCI-Format0-0-AndFormat1-0) to monitor PDCCH candidates for DCI Format 0_0 and DCI Format 1_ 0;

-an indication provided by a DCI Format2-0 (DCI-Format2-0) field to monitor DCI Format 2_0 and PDCCH candidates for corresponding CCE aggregation level;

-an indication provided by a DCI Format2-1 (DCI-Format2-1) field to monitor PDCCH candidates of DCI Format 2_ 1;

-an indication provided by a DCI Format2-2 (DCI-Format2-2) field to monitor PDCCH candidates for DCI Format 2_ 2;

-an indication provided by a DCI Format2-3 (DCI-Format2-3) field to monitor PDCCH candidates for DCI Format 2_ 3;

-if the set of search spaces is a USS set,

an indication provided by a DCI format (DCI-Formats) field to monitor any of DCI format 0_0, format 1_0, format 0_1, format 1_1 PDCCH candidates.

The terminal device can blind detect potential PDCCH in SS, however, on one BWP, the maximum number of PDCCH that the terminal device can blind detect is limited, and can be determined according to table 2:

TABLE 2

However, since it is not determined which LBT sub-band will be successful before the network transmits data, the network device configures a corresponding PDCCH blind detection region (i.e., CORESET and SS) on each LBT sub-band. However, due to the channel uncertainty, the UE may have a blind detection number exceeding the maximum blind detection number in all configured CORESET and SS, i.e. the values in table 2; if the CORESET and the SS are configured according to the most conservative blind detection times, for example, the blind detection times obtained by adding the CORESET and the SS configured on each LBT subband do not exceed the maximum number, but if only one subband (or not all subbands are available) is available, the blind detection times are too few, and the PDCCH cannot be fully utilized to configure resources, which results in waste of resources.

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

The following describes the method for detecting PDCCH according to the embodiment of the present application in detail with reference to fig. 2.

As shown in fig. 2, a schematic flow chart of a method 200 for detecting PDCCH according to an embodiment of the present application is shown, the method 200 may comprise steps 210 and 220.

214, the terminal device determines a first core set configuration from multiple core set configurations for an available sub-band in the downlink BWP configured on the unlicensed spectrum carrier, where the absolute position of the frequency domain resource is not defined in the core set configuration, and the available sub-band is a sub-band for which LBT is successfully performed by the network device.

In this embodiment of the present application, the terminal device determines the CORESET configuration for the sub-band available in the downlink BWP configured on the unlicensed spectrum carrier, that is, before determining the CORESET configuration for the sub-band in the downlink BWP configured on the unlicensed spectrum carrier, the terminal device determines the sub-band that successfully performs LBT through the network device, and performs the CORESET configuration for the sub-band that successfully performs LBT through the network device.

The first core set configuration in this embodiment may be one core set configuration, or may be multiple core set configurations, and when the first core set configuration is configured as multiple core sets, the multiple core sets collectively configure resources for subbands usable in downlink BWP configured on the unlicensed spectrum carrier.

In this embodiment of the application, the usable subbands may be all subbands in the downlink BWP configured on the unlicensed spectrum carrier, or may also be partial subbands in the downlink BWP configured on the unlicensed spectrum carrier, which is not specifically limited in this application.

In the embodiment of the present application, the CORESET configuration may refer to a configuration for CORESET. One core set configuration may be a configuration for one core set, or may be a configuration for a plurality of core sets.

In addition, the various CORESET configurations referred to in the embodiments of the present application do not define the absolute location of the frequency domain resource, that is, the information about the frequency domain resource in the various CORESET configurations only indicates the frequency domain length of the corresponding CORESET, and does not indicate the absolute frequency domain location of the CORESET. In the embodiment of the present application, the frequency domain length defined by each of the plurality of 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 time domain length of the corresponding CORESET may be indicated in the CORESET configuration, and the absolute time domain position of the CORESET may also be indicated. The plurality of CORESET configurations may indicate time domain information for all CORESET configurations, or may indicate time domain information for part of CORESET configurations. The time domain length of each of the plurality of CORESET configurations may be the same or different, and this is not specifically limited in this application.

In the embodiment of the present application, the core set configuration may be associated with SS configurations (an SS configuration may be a configuration for an SS), and each core set configuration configured by an associated SS may indicate the number of detections of each core set configuration. 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 may be determined according to the first CORESET configuration.

Optionally, in some embodiments, the network device determines, for an available subband in the downlink BWP configured on the unlicensed spectrum carrier, a first CORESET configuration from a plurality of CORESET configurations, where an absolute location of a frequency domain resource is not defined in the CORESET configuration, and the available subband is a subband for which LBT performed by the network device is successful.

216, based on the first CORESET configuration, the terminal device determines a resource location for detecting a first PDCCH on an available subband, where the first PDCCH is used for scheduling the terminal device.

In the embodiment of the application, after the terminal device determines the first CORESET configuration from the plurality of CORESET configurations, the terminal device determines the resource position for detecting the first PDCCH on an available subband for data transmission.

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

Similarly, in order to understand the resource allocation in the system, the network device may also perform step 210 and step 212, so that the subsequent network device may 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 step 210 and step 212.

210, a network device determines a first CORESET configuration from multiple CORESET configurations for an available subband in a downlink BWP configured on an unlicensed spectrum carrier, where the CORESET configuration does not define an absolute location of a frequency domain resource, and the available subband is a subband for which LBT is successfully performed by the network device.

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 for scheduling the terminal device.

It should be understood that the sequence number of the above steps is not the sequence of the steps executed by the terminal device and the network device in the system, for example, the network device may execute the steps 214 and 216 in the terminal device when executing the steps 210 and 212, or the network device may execute the step 210 and then execute the step 214 and 216, or the terminal device executes the step 214 and then executes the step 210 and then 212, or the network device executes the step 210 and then executes the step 214 and then executes the step 212 and then executes the step 216, which is not limited in this application.

And 220, detecting the first PDCCH by the terminal equipment based on the determined resource position.

In the embodiment of the present application, after the terminal device determines the resource location, the first PDCCH may be detected. If the first PDCCH is detected, the terminal device may receive the PDSCH or transmit the PUSCH based on the first PDCCH.

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

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

For example, the determination may be made according to the number of available subbands, or according to the frequency domain length of the available subbands.

Taking an example of determining the first CORESET configuration according to the number of available subbands, it is assumed that the plurality of CORESET configurations include three CORESET configurations, i.e., CORESET configuration 1, CORESET configuration 2, and CORESET configuration 3, and the downlink BWP subband includes three subbands, i.e., subband 1, subband 2, and subband 3.

When the terminal device determines that the downlink BWP sub-band 1 is available, the terminal device may determine, from the three CORESET configurations, that the CORESET configuration 1 performs resource configuration, may select the CORESET configuration 2 to perform resource configuration, and may select the CORESET configuration 3 to perform resource configuration.

If the terminal device determines that the downlink BWP sub-band 1 and sub-band 2 are available, the terminal device may determine, from the three CORESET configurations, that the CORESET configuration 1 performs resource configuration on the sub-band 1 and sub-band 2, may also determine that the CORESET configuration 2 performs resource configuration on the sub-band 1 and sub-band 2, or may select the CORESET configuration 1 to perform resource configuration on the sub-band 1, and at the same time, the CORESET configuration 2 performs resource configuration on the sub-band 2, which is not specifically limited in this application.

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

For example, if the maximum blind detection number allowed by the terminal device is 20, when the terminal device determines that the downlink BWP sub-band 1 is available, it determines that the CORESET configuration 1 performs resource configuration from the three CORESET configurations, and at this time, the blind detection number of the SS configuration associated with the CORESET configuration 1 should be less than or equal to 20. If the number of blind tests of the SS configuration associated with the CORESET configuration 1 is greater than 20, for example, 25, in this case, the number of redundant 5 times of the SS configuration associated with the CORESET configuration 1 may not be performed any more, that is, the number of blind tests of the SS configuration associated with the CORESET configuration 1 may be 25, and since the maximum allowable number of blind tests of the terminal device is 20, 5 of the 25 times of blind tests associated with the CORESET configuration 1 may not be performed any more, which results in waste of resources.

It can be understood that, if the terminal device determines that multiple downlink sub-bands are available, the sum of the blind detection times of the SS configurations associated with the selected multiple CORESET configurations should be less than the maximum blind detection time allowed by the terminal device. For example, if the maximum blind detection number allowed by the terminal device is 20, when the terminal device determines that the downlink BWP sub-band 1 and sub-band 2 are available, if the terminal device selects CORESET configuration 1 to perform resource configuration on sub-band 1, and at the same time, CORESET configuration 2 performs resource configuration on sub-band 2, in this case, the sum of the blind detection number of the SS configuration associated with CORESET configuration 1 and the blind detection number of the SS configuration associated with CORESET configuration 2 does not exceed 20. The number of blind tests of the SS configuration associated with the CORESET configuration 1 and the number of blind tests of the SS configuration associated with the CORESET configuration 2 may both be 10, or the number of blind tests of the SS configuration associated with the CORESET configuration 1 may be 8, and the number of blind tests of the SS configuration associated with the CORESET configuration 2 may be 12 or 10.

It should be understood that the number of blind detection times or the number of sub-bands recited in the embodiments of the present application are only exemplary, and should not be particularly limited.

In this embodiment of the application, the maximum blind detection times allowed by the terminal device may be the maximum blind detection times allowed by the terminal device to detect the first PDCCH (that is, schedule the PDSCH or the PUSCH), and if the maximum blind detection times allowed to detect the first PDCCH and the second PDCCH are preset on the terminal device, the terminal device may subtract the blind detection times for detecting the second PDCCH from the maximum blind detection times to obtain the maximum blind detection times allowed by the terminal device to detect the first PDCCH (that is, schedule the PDSCH or the PUSCH).

In the method for detecting a PDCCH provided in the embodiment of the present application, since the number of blind detections indicated by each CORESET configuration does not exceed the maximum number of blind detections allowed by the terminal device, when the terminal device determines to detect the resource location of the first PDCCH on an available subband, the CORESET may be arbitrarily configured on the available subband, so as to reduce the number of configuration times.

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

In the embodiment of the present application, a CORESET configuration may correspond to one subband or may correspond to a plurality of subbands. In an embodiment, the multiple CORESET configurations include three CORESET (CORESET configuration 1, CORESET configuration 2, and CORESET configuration 3) configurations, and the downlink BWP sub-band includes three sub-bands, i.e., sub-band 1, sub-band 2, and sub-band 3. In this case, the CORESET configuration 1 may correspond to the sub-band 1, the CORESET configuration 2 corresponds to the sub-band 2, and the CORESET configuration 3 corresponds to the sub-band 3; if the sub-band 1 and the sub-band 2 are available, the network device may adopt a CORESET configuration 1 and a CORESET configuration 2.

In another embodiment, the multiple CORESET configurations include three CORESET (CORESET configuration 1, CORESET configuration 2, and CORESET configuration 3) configurations, and the downlink BWP sub-band includes three sub-bands, i.e., sub-band 1, sub-band 2, and sub-band 3. The CORESET configuration 1 may correspond to subband 1, subband 2, or subband 3, respectively; CORESET configuration 2 may correspond to subband 1 and subband 2, subband 2 and subband 3, and subband 1 and subband 3; CORESET3 may correspond to subband 1, subband 2, and subband 3, and network devices may employ CORESET configuration 2 if subband 1 and subband 2 are available.

In the embodiment of the application, when determining the first CORESET configuration, the network device and the terminal device may determine based on the same rule, or after determining the first CORESET configuration from a plurality of CORESET configurations, the network device sends the determined first CORESET configuration to the terminal device through an available subband, and instructs the terminal device to determine the resource location by using the first CORESET configuration.

Optionally, in some embodiments, the network device sends indication information on available subbands, where the indication information is used to indicate that the terminal device determines the resource location using a first CORESET configuration of the plurality of CORESET configurations.

After receiving the indication information sent by the network device, the terminal device determines the resource position by adopting a first CORESET configuration from a plurality of CORESET configurations based on the indication information detected on the usable subband.

In this embodiment, when determining the first core set configuration from the plurality of core sets configurations, the terminal device may determine based on indication information sent by the network device on an 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 may be carried in the common PDCCH, and in this case, the state corresponding to each subband may be shared, so that other terminal devices can determine the resource location according to the known subband state information.

For example, in a system where a network may carry data transmissions to multiple terminal devices, if indication information is placed in a common PDCCH, the CORESET configuration may be known to all terminal devices associated with the network so that other terminal devices can determine resource locations based on other CORESET configurations.

Of course, optionally, in some embodiments, the indication information in the embodiment of the present application may also indicate a resource location for detecting the first PDCCH on multiple available subbands based on the first CORESET configuration, where the indication information is carried on one subband in the multiple available subbands.

In this embodiment of the application, after the network device determines the first CORESET configuration from the multiple CORESET configurations, the indication information may directly indicate a resource location for detecting the first PDCCH on the available subband based on the first CORESET configuration, and send the determined resource location for detecting the first PDCCH on the available subband to the terminal device, where the terminal device detects the first PDCCH on the determined resource location.

In this embodiment, the indication information indicating the resource location for determining to detect the first PDCCH on the available subband may be carried on one subband of the multiple available subbands. For example, for a plurality of subbands including 3 subbands, if the indication information is carried in available subband 1, and the corresponding indication information indicates that the resource location for detecting the first PDCCH is determined based on the first CORESET configuration, the terminal device determines, according to the indication of the indication information, the resource location for detecting the first PDCCH on the available subband, and then detects the first PDCCH on the determined resource location. It should be understood that the indication information indicating the resource location for determining to detect the first PDCCH on the available subband may be located only on subband 1, only on subband 2, or both subband 1 and subband 2, which is not specifically limited in this application.

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 available sub-bands.

In this embodiment, the frequency domain length indicated by the first core set configuration may cover at least part of the frequency domain resources of each of the partial usable sub-bands.

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

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

When multiple sub-bands are available for downlink BWP, optionally, in some embodiments, the frequency domain length indicated by the first core set configuration covers at least part of the frequency domain resources of each of the multiple available sub-bands.

In this embodiment of the present application, if the terminal device determines that the downlink BWP sub-band 1 and the downlink BWP sub-band 2 are available, the terminal device may determine, from the three CORESET configurations, that the CORESET configuration 1 performs PDCCH resource configuration on the sub-band 1 and the sub-band 2, and in this case, the frequency domain length indicated by the CORESET configuration 1 may only cover a part of the frequency domain resources of the sub-band 1, and may not cover the frequency domain resources of the sub-band 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 available sub-bands can be selected as the strip reference condition.

If the terminal device determines that the downlink BWP sub-band 1 and sub-band 2 are available, when selecting the first core set configuration, it selects the core set configuration that can be overlaid to sub-band 1 and sub-band 2. For example, if the frequency range of subband 1 is 0-20MHz and the frequency range of subband 2 is 20-40, and the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources in each of subband 1 and subband 2, a configuration with a frequency domain length greater than 20MHz, for example, 21MHz, 30MHz, etc., is selected from a plurality of CORESET configurations, so that the determined first CORESET configuration can cover at least part of the frequency domain range of each of the two available subbands.

In some cases, the network device and the terminal device may determine multiple CORESET configurations according to a preset unified rule, or may send the indication information to the terminal device to indicate the determined multiple CORESET configurations after the network device determines the multiple CORESET configurations again.

Optionally, in some embodiments, as shown in fig. 4, the method 200 may further include step 222 and step 224.

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

260, the terminal equipment receives the configuration information sent by the network side

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

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

The network device indicates that the subband is available via a second PDCCH for the available subband 226, wherein the second PDCCH is a common PDCCH.

228, the terminal device determines usable subbands in BWP according to the detection result of the second PDCCH in each subband in BWP.

In this embodiment, the network device may indicate, through the second PDCCH of the sub-band in which the LBT operation is successful, that the sub-band is available, and the terminal device determines the available sub-band in the BWP according to a detection result of the second PDCCH.

For example, for subband 1, if the network device successfully performs the LBT operation, the second PDCCH may be sent on the subband 1, and the terminal device detects the second PDCCH on the subband 1, which indicates that the network device may occupy the subband 1, and the terminal device may blindly detect the first PDCCH on the subband 1.

An embodiment of the present invention further provides a method for detecting a PDCCH, and as shown in fig. 6, the method 600 may include steps 610 and 620.

And 610, the network device determines a resource position of a first PDCCH on an available subband in a downlink bandwidth part BWP configured on the unlicensed spectrum carrier, where the first PDCCH is used for scheduling the terminal device, and the available subband is a subband on which the network device successfully performs listen before talk LBT.

And 612, the network device sends indication information to the terminal device, where the indication information is used for the terminal device to determine a resource location for detecting a first PDCCH on the available subband, and the first PDCCH is used for scheduling the terminal device.

In this embodiment, after determining an available subband, the network device may send indication information to the terminal device, so that the terminal device determines a resource location for detecting the first PDCCH on the subband.

614, the terminal device detects the indication information from the network device on the sub-band of the downlink BWP 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, where the first PDCCH is used for scheduling the terminal device.

In the embodiment of the present application, when the terminal device detects the indication information on the sub-band, it may determine that the sub-band is available. At this time, the indication information may be used for the terminal device to determine that the subband is available, or for the terminal device to determine a resource location for detecting the first PDCCH on the subband.

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

In the embodiment of the present application, for a subband in which indication information is not detected, a resource location for detecting the first PDCCH on the subband may be determined according to a preconfigured CORESST, or may be determined according to a preset rule.

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

And 620, based on the determined resource position, the terminal equipment detects the first PDCCH.

After the terminal device determines the resource location, the detection of the state of the first PDCCH may be started. If the first PDCCH is in the idle state, the terminal device may enable the first PDCCH to control the PDSCH to perform data transmission.

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

For example, in a system where a network may carry data transmissions for multiple terminal devices, if indication information is placed in a common PDCCH, the status of the PDCCH may be known to all terminal devices associated with the network, so that other terminal devices can determine resource locations according to the known subband status information.

Optionally, in some embodiments, the indication information indicates that the resource location is determined using a first CORESET configuration of the plurality of CORESET configurations, where the frequency domain resource absolute location is undefined.

And according to the configuration of the first CORESET, the terminal equipment determines the resource position of the first PDCCH detected on the subband.

In the embodiment of the application, in the indication information sent by the network device to the terminal device, the terminal device may be indicated to determine the resource location by using a first CORESET configuration in multiple CORESET configurations. And after the terminal equipment detects the indication information, adjusting and determining the resource position for detecting the first PDCCH according to the indication of the indication information sent by the network equipment.

The first core set configuration in this embodiment may be one core set configuration, or may be multiple core set configurations (for example, an available subband is multiple, and one core set configuration may correspond to one subband or multiple subbands).

In addition, the various CORESET configurations referred to in the embodiments of the present application do not define the absolute location of the frequency domain resource, that is, the information about the frequency domain resource in the various CORESET configurations only indicates the frequency domain length of the CORESET configuration, and does not indicate the absolute frequency domain location of the CORESET configuration. In the embodiment of the present application, the frequency domain length of each of the plurality of 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 time domain length of the corresponding CORESET may be indicated in the CORESET configuration, and the absolute time domain position of the corresponding CORESET may also be indicated. The plurality of CORESET configurations may indicate time domain information for all CORESET configurations, or may indicate time domain information for part of CORESET configurations. The time domain length of each of the plurality of CORESET configurations may be the same or different, and this is not specifically limited in this application.

For example, if the maximum number of blind detections allowed by the terminal device is 20, when the terminal device determines that the downlink BWP sub-band 1 is available, the network device instructs to determine the first core set configuration from the multiple core sets configuration based on the maximum number of blind detections allowed by the terminal device is 20. For example, the network device instructs to determine the core set configuration 1 from the three core set configurations to perform resource configuration, and the number of blind tests of the SS configuration associated with the core set configuration 1 should be less than or equal to 20 times. If the number of blind tests of the SS configuration associated with the CORESET configuration 1 is greater than 20, for example, 25, in this case, the extra 5 times of the SS configuration associated with the CORESET configuration 1 may not be performed any more, that is, the number of blind tests of the SS configuration associated with the CORESET configuration 1 may be performed 25 times, and since the maximum allowable number of blind tests of the terminal device is 20, 5 times of blind tests of the 25 times of blind tests associated with the CORESET configuration 1 may not be performed any more, thereby resulting in waste of resources.

It can be understood that, if the terminal device determines that multiple downlink sub-bands are available, the sum of the blind detection times of the SS configurations associated with the selected multiple CORESET configurations should be less than or equal to the maximum blind detection time allowed by the terminal device. For example, if the maximum blind detection number allowed by the terminal device is 20, when the terminal device determines that the downlink BWP sub-band 1 and sub-band 2 are available, if the terminal device selects the CORESET configuration 1 to perform resource configuration on the sub-band 1, and at the same time, the CORESET configuration 2 performs resource configuration on the sub-band 2, in this case, the sum of the blind detection number of the SS configuration associated with the CORESET configuration 1 and the blind detection number of the SS configuration associated with the CORESET configuration 2 should not exceed 20. The number of blind tests of the SS configuration associated with the CORESET configuration 1 and the number of blind tests of the SS configuration associated with the CORESET configuration 2 may both be 10, or the number of blind tests of the SS configuration associated with the CORESET configuration 1 may be 8, and the number of blind tests of the SS configuration associated with the CORESET configuration 2 may be 12 or 10.

Optionally, in some embodiments, a second CORESET configuration is determined based on the first CORESET configuration and the offset, the second CORESET configuration defining therein a frequency domain resource absolute position; and the terminal equipment determines the resource position for detecting the first PDCCH on the subband according to the second CORESET configuration.

It can be understood that, in the embodiment of the present application, the first CORESET configuration does not define an absolute location of the frequency domain resource, and in combination with a location offset of the first CORESET configuration with respect to the bandwidth part, a second CORESET configuration having an absolute frequency domain location may be determined, and after determining the second CORESET configuration, the terminal device determines a resource location for detecting the first PDCCH on the subband according to the second CORESET configuration whose frequency domain location is fixed.

The offset in the embodiment of the present application may be a parameter in the CORESET configuration, or may be configured independently of the CORESET configuration, for example, the offset may be indicated to the terminal device through the indication information mentioned in the present application, or may be configured to the terminal device through RRC signaling 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, wherein the configuration information is used for indicating the plurality of CORESET configurations.

And 624, the terminal equipment receives the configuration information sent by the network side.

Optionally, in some embodiments, the indication information indicates a resource location for detecting the first PDCCH on a plurality of the available subbands based on the first CORESET configuration, where the indication information is carried on one of the plurality of the subbands.

In this embodiment, after the network device or the terminal device determines the first core set configuration from the multiple core set 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 core set configuration.

In this embodiment of the application, after the network device determines the first CORESET configuration from the multiple CORESET configurations, the indication information may directly indicate a resource location for detecting the first PDCCH on the available subband based on the first CORESET configuration, and send the determined resource location for detecting the first PDCCH on the available subband to the terminal device, and the terminal device detects the first PDCCH according to the determined resource location.

In this embodiment, the indication information indicating the resource location for determining to detect the first PDCCH on the available subband may be carried on one subband of the multiple available subbands. For example, for a plurality of subbands including 3 subbands, if the indication information is carried for usable subband 1. The indication information indicates that the resource position for detecting the first PDCCH is determined based on the first CORESET configuration, the terminal equipment determines the resource position for detecting 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 position. It should be understood that the indication information indicating the resource location for determining to detect the first PDCCH on the available subband may be located only on subband 1, only on subband 2, or both subband 1 and subband 2, which is not specifically limited in this application.

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 plurality of sub-bands.

In this embodiment of the present application, the first core set configuration may be single or multiple, and the frequency domain length indicated by the first core set configuration may cover at least part of the frequency domain resources of each of the multiple sub-bands. For example, if the terminal device performs CORESET configuration on the downlink BWP sub-band, the terminal device may determine CORESET configuration 1 from the three CORESET configurations to perform resource configuration, may select CORESET configuration 2 to perform resource configuration, and may select CORESET configuration 3 to perform resource configuration.

If the terminal device performs the CORESET configuration on the downlink BWP sub-band 1 and sub-band 2, the terminal device may determine, from the three CORESET configurations, that the CORESET configuration 1 performs the resource configuration on the sub-band 1 and sub-band 2, in this case, the frequency domain length indicated by the CORESET configuration 1 may only cover a part of the frequency domain resources of the sub-band 1, or only cover a part of the frequency domain resources of the sub-band 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 plurality of sub-bands can be selected as the strip reference condition.

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

Generally, in order to maximize resource utilization, when configuring resources for each sub-band, the network configures each sub-band with the largest possible resource in a pre-configured manner, but in this case, when multiple sub-bands are simultaneously available, the number of blind detections for all configurations may exceed the maximum number of blind detections allowed by the terminal device, and therefore, in order to reasonably utilize the resources, the embodiment of the present application further provides a method for detecting a PDCCH, as shown in fig. 8, the method 800 may include step 810 and 816.

810, aiming at an available subband in a downlink BWP configured on an unlicensed spectrum carrier, the network device determines, from a resource location of a first PDCCH detected by a terminal device preconfigured for the available subband, a resource location of the first PDCCH to be detected by the terminal device.

In this embodiment of the application, the network device may determine the resource location to be detected from the resource location of the first PDCCH configured in advance, that is, after the network device configures the region of the PDCCH on each subband in the plurality of subbands, the network device may adjust the resource location of the PDCCH configured on the available subband, so as to improve the resource utilization rate.

And 812, for an available subband in the downlink BWP configured on the unlicensed spectrum carrier, the terminal device determines a resource location to be detected from resource locations for detecting the first PDCCH preconfigured for the available subband.

In this embodiment of the application, the terminal device may determine the resource location to be detected from the resource location of the first PDCCH that is preconfigured, that is, after the network device configures the candidate resource location of the PDCCH on each subband in the plurality of subbands, the terminal device may select the resource location of the PDCCH that is preconfigured on an available subband, so as to improve the resource utilization rate.

In the embodiment of the present application, when determining the resource location to be detected, the terminal device may also determine according to indication information sent by the network device to the terminal device, where the corresponding indication information may indicate a selection result of the network device on a candidate resource location of a PDCCH preconfigured on an available subband, which 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 application, after determining the resource position 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.

And after the terminal equipment re-determines the resource position to be detected, the terminal equipment detects the first PDCCH based on the resource position to be detected.

Optionally, in some embodiments, based on the maximum number of blind detections allowed by the terminal device, the terminal device determines a resource location to be detected from resource locations for detecting the first PDCCH, which are preconfigured for available subbands.

In the embodiment of the application, the terminal device may determine the resource location to be detected from the pre-configured resource location for detecting the first PDCCH based on the maximum blind detection times 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 each subband based on the maximum number of blind detections that can be detected by 10, and if 3 subbands included in the bandwidth part are all available, the number of detections performed on the 3 subbands will be greater than the maximum number of blind detections allowed by the terminal device, so before the terminal device performs detection, the location of the resource for detecting the first PDCCH that is preconfigured may be determined again, for example, 10 detections may be determined again on subband 1, 5 detections may be performed on subband 2, and 5 detections may be performed on subband 3, so as to improve the resource utilization rate.

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

In this embodiment, the network device may perform resource location configuration on the subband included in the bandwidth part in advance, where the network device may determine the subband according to the CORESET configuration and the search space when performing resource location configuration on the subband.

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

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

And 820, the terminal device determines usable sub-bands in the BWP according to the detection result of the second PDCCH in each sub-band in the BWP.

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

The method embodiment of the present application is described in detail above with reference to fig. 1 to 9, and the apparatus embodiment of the present application is described below with reference to fig. 10 to 20, and corresponds to the method embodiment, so that the parts not described in detail can be referred 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, which may include a determining module 1010 and a detecting module 1020.

A determining module 1010, configured to determine, from multiple CORESET configurations, a first CORESET configuration for an available subband in a downlink BWP configured on an unlicensed spectrum carrier, where an absolute position of a frequency domain resource is not defined in the CORESET configuration, and the available subband is a subband on which LBT is successfully performed by a network device.

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 used for scheduling the terminal device.

A detecting module 1020 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, according to the available subband, the first core set configuration corresponding to the available subband from multiple core set configurations.

Optionally, in some embodiments, the determining module 1010 is specifically configured to determine the first CORESET configuration from the multiple CORESET configurations based on the detected indication information on the available subbands, where the indication information is used to indicate that the resource location is determined by using the first CORESET configuration from the multiple CORESET configurations.

Optionally, in some embodiments, the indication information indicates a resource location for detecting the first PDCCH on the plurality of available subbands based on the first CORESET configuration, where the indication information is carried on one subband of the plurality of 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 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 of a plurality of the available subbands.

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

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

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

Optionally, in some embodiments, the determining module 1010 is further configured to: and determining usable sub-bands in the BWP according to the detection result of a second PDCCH in each sub-band in the BWP, wherein the second PDCCH is a common PDCCH.

Fig. 12 is an apparatus 1200 for detecting PDCCH according to an embodiment of the present disclosure, which may include a detecting module 1210 and a determining module 1220.

A detecting module 1210, configured to detect indication information from a network device on a sub-band of a downlink BWP configured by an unlicensed spectrum carrier.

A determining module 1220, configured to determine, according to the indication of the indication information, a resource location for detecting a first PDCCH on the subband when the indication information is detected on the subband, where the first PDCCH is a PDCCH for scheduling the terminal device.

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

Optionally, in some embodiments, the indication information indicates that the resource location is determined in a first CORESET configuration of a plurality of CORESET configurations, where the absolute location of the frequency domain resource is not defined; the determining module 1220 is specifically configured to determine, according to the first CORESET configuration, a resource location for detecting the first PDCCH on the subband.

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

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

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

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

Fig. 14 is an apparatus 1400 for detecting PDCCH according to an embodiment of the present disclosure, which may include a determining module 1410 and a detecting module 1420.

A determining module 1410, configured to determine, for an available subband in a downlink BWP configured on an unlicensed spectrum carrier, a resource location to be detected from resource locations, configured for the available subband, for detecting a first PDCCH.

A detecting module 1420, 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: and determining the position of the resource to be detected from the resource position for detecting the first PDCCH preconfigured for the available sub-band based on the maximum blind detection times allowed by the terminal equipment.

Optionally, in some embodiments, the preconfigured resource location is determined based on a CORESET and a search space preconfigured for the subband.

Optionally, in some embodiments, the detection module 1420 is further configured to: and determining usable sub-bands in the BWP according to the detection result of a second PDCCH in each sub-band in the BWP, wherein the second PDCCH is a common PDCCH.

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

A determining module 1510, configured to determine, for an available subband in a downlink BWP configured on an unlicensed spectrum carrier, a first CORESET configuration from multiple CORESET configurations, where an absolute position of a frequency domain resource is not defined in the CORESET configuration, and the available subband is a subband on which LBT is successfully performed by a network device;

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 subbands, where the first PDCCH is a PDCCH for scheduling the terminal device;

a sending module 1520, configured to send the first PDCCH to the terminal device on the determined resource location.

Optionally, in some embodiments, the determining module 1510 is specifically configured to: and determining the first CORESET configuration corresponding to the available sub-band from a plurality of CORESET configurations according to the available sub-band.

Optionally, in some embodiments, the sending module 1520 is further configured to: and sending indication information on the usable sub-band, wherein the indication information is used for indicating the terminal equipment to adopt the first CORESET configuration in the plurality of CORESET configurations to determine the resource position.

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 plurality of CORESET configurations.

Optionally, in some embodiments, the apparatus further includes an indicating module 1530 configured to indicate the available subband through a 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, and the apparatus 1600 may include a transmitting module 1610.

A sending module 1610, configured to send indication information to a terminal device, where the indication information is used to indicate that the terminal device determines, according to an indication of the indication information, a resource location for detecting a first PDCCH on the subband, where the first PDCCH is used to schedule the terminal device;

a sending module 1610, 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 indicates that the resource location is determined with a first CORESET configuration of a plurality of CORESETs, where a frequency domain resource absolute location is not defined.

Optionally, in some embodiments, the sending module 1610 is further configured to: and sending configuration information to the terminal equipment, wherein the configuration information is used for indicating the various CORESET configurations.

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 a plurality of the sub-bands.

Fig. 17 is an apparatus 1700 for detecting PDCCH according to an embodiment of the present application, where the apparatus 1700 may include a determining module 1710 and a transmitting module 1720.

A determining module 1710, configured to determine, for an available subband in a downlink BWP configured on an unlicensed spectrum carrier, a resource location of a first PDCCH to be detected by a terminal device from resource locations of the first PDCCH detected by the terminal device and preconfigured for the available subband.

A sending module 1720, 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: and based on the maximum blind detection times allowed by the terminal equipment, the network equipment determines the position of the resource to be detected from the resource positions for detecting the first PDCCH preconfigured for the available sub-bands.

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

Optionally, in some embodiments, the apparatus 1700 further comprises: an indicating module 1730, configured to indicate that the available subband is available through a second PDCCH of the available subband, where the second PDCCH is a common PDCCH.

An embodiment of the present application further provides a communication device 1800, as shown in fig. 18, including a processor 1810 and a memory 1820, the memory being used for storing a computer program, and the processor being used for calling and executing the computer program stored in the memory, and performing the method according to any one of claims xx to xx.

From the memory 1820, the processor 1810 may invoke and execute a computer program to implement the methods of the embodiments of the present application.

The memory 1820 may be a separate device from the processor 1810 or may be integrated into 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, and in particular, may transmit information or data to other devices or receive information or data transmitted by other devices.

The transceiver 1830 may include a transmitter and a receiver, among others. The transceiver 1830 may further include one or more antennas.

Optionally, the communication device 1800 may specifically be a network device according to this embodiment, and the communication device 1800 may implement a corresponding process implemented by the network device in each method according to this embodiment, which is not described herein again for brevity.

Optionally, the communication device 1800 may specifically be a mobile terminal/terminal device according to this embodiment, and the communication device 1800 may implement a corresponding process implemented by the mobile terminal/terminal device in each method according to this embodiment, which is not described herein again for brevity.

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 a 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. From the memory 1920, the processor 1910 may call and execute a computer program to implement the method in the embodiment of the present application.

The memory 1920 may be a separate device from the processor 1910 or may be integrated into the processor 1910.

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

Optionally, the chip 1900 may also include an output interface 1940. Processor 1910 may control output interface 1940 to communicate with other devices or chips, and in particular may output information or data to the other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.

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

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Fig. 20 is a schematic structural diagram of a communication system 2000 according to 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.

The terminal device 2010 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 2020 may be configured to implement the corresponding function implemented by the network device in the foregoing method, for brevity, which is not described herein again.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may 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 in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising 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 enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for detecting a Physical Downlink Control Channel (PDCCH), comprising:

the method comprises the steps that a terminal device determines first CORESET configuration from multiple control resource sets CORESET configuration aiming at usable sub-bands in a downlink bandwidth part BWP configured on an unlicensed spectrum carrier, wherein the CORESET configuration does not limit the absolute position of frequency domain resources, and the usable sub-bands are sub-bands which are successfully listened to before being spoken LBT by a network device;

based on the first CORESET configuration, the terminal equipment determines a resource position for detecting a first PDCCH on the available subband, wherein the first PDCCH is used for scheduling the terminal equipment;

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

and according to the available sub-band, the terminal equipment determines the first CORESET configuration corresponding to the available sub-band from the plurality of CORESET configurations.
The method according to claim 2, wherein the first CORESET configuration is determined from the plurality of CORESET configurations according to the available subbands and their correspondence to CORESET configurations.
The method of claim 1, wherein determining a first CORESET configuration from a plurality of CORESET configurations comprises:

determining the first CORESET configuration from the plurality of CORESET configurations based on the detected indication information on the available sub-band, wherein the indication information is used for indicating that the resource position is determined by adopting the first CORESET configuration in the plurality of CORESET configurations.
The method of claim 4, wherein the indication information is carried in a common PDCCH.
The method of claim 4 or 5, wherein the indication information indicates a resource location for detecting a first PDCCH on a plurality of the available subbands based on the first CORESET configuration, wherein the indication information is carried on one subband in the plurality of the available subbands.
The method according to any 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 available sub-bands.
The method according to any of claims 1 to 6, wherein the first CORESET configuration indicates a frequency domain length covering at least part of the frequency domain resources of each of a plurality of said available subbands.
The method according to any one of claims 1 to 8, further comprising:

and the terminal equipment receives configuration information sent by a network side, wherein the configuration information is used for indicating the plurality of CORESET configurations.
The method according to any one of claims 1 to 9, wherein the number of blind tests indicated by each of the CORESET configurations does not exceed the maximum number of blind tests allowed by the terminal device.
The method according to any one of claims 1 to 10, further comprising:

and determining usable sub-bands in the BWP according to the detection result of a second PDCCH in each sub-band in the BWP, wherein the second PDCCH is a common PDCCH.
A method for detecting a Physical Downlink Control Channel (PDCCH), comprising:

the method comprises the steps that terminal equipment detects indication information from network equipment on a sub-band of a downlink bandwidth part BWP configured by an unauthorized spectrum carrier;

when the indication information is detected on the subband, the terminal equipment determines the resource position of detecting a first PDCCH on the subband according to the indication of the indication information, wherein the first PDCCH is used for scheduling the terminal equipment;

based on the determined resource location, the terminal device detects the first PDCCH.
The method of claim 12, wherein the indication information is carried in a common PDCCH.
The method according to claim 12 or 13, wherein the indication information indicates that the resource location is determined by using a first CORESET configuration of a plurality of CORESET configurations, wherein an absolute location of a frequency domain resource is not defined in the CORESET configuration;

the determining, by the terminal device according to the indication of the indication information, a resource location for detecting the first PDCCH on the subband includes:

and according to the first CORESET configuration, the terminal equipment determines the resource position of the first PDCCH detected on the subband.
The method of claim 14, wherein the determining, by the terminal device according to the first CORESET configuration, a resource location for detecting the first PDCCH on the subband comprises:

determining a second CORESET configuration based on the first CORESET configuration and an offset, wherein the second CORESET configuration defines an absolute position of a frequency domain resource;

and the terminal equipment determines the resource position for detecting the first PDCCH on the subband according to the second CORESET configuration.
The method according to claim 14 or 15, characterized in that the method further comprises:

and the terminal equipment receives configuration information sent by a network side, wherein the configuration information is used for indicating the plurality of CORESET configurations.
The method according to any one of claims 14 to 16, wherein the number of blind tests indicated by each of the CORESET configurations does not exceed the maximum number of blind tests allowed by the terminal device.
The method of any of claims 13 to 17, wherein the indication information indicates a resource location for detecting a first PDCCH on a plurality of the subbands based on the first CORESET configuration, wherein the indication information is carried on one of the plurality of the subbands.
The method of claim 18, wherein the first CORESET configuration indicates a frequency domain length covering at least a portion of frequency domain resources of the plurality of the subbands.
A method for detecting a Physical Downlink Control Channel (PDCCH), comprising:

the method comprises the steps that terminal equipment determines a resource position to be detected from a resource position for detecting a first PDCCH (physical downlink control channel) which is pre-configured for an available subband in a downlink bandwidth part BWP (BWP) configured on an unlicensed spectrum carrier;

and the terminal equipment detects the first PDCCH based on the position of the resource to be detected.
The method of claim 20, wherein the determining, by the terminal device, a resource location to be detected from resource locations for detecting the first PDCCH preconfigured for the available subbands comprises:

and based on the maximum blind detection times allowed by the terminal equipment, the terminal equipment determines the position of the resource to be detected from the resource position for detecting the first PDCCH preconfigured for the available sub-band.
The method according to claim 20 or 21, wherein the preconfigured resource location is determined based on a control resource set, CORESET, preconfigured for the subband and a search space.
The method of any one of claims 20 to 22, further comprising:

and determining usable sub-bands in the BWP according to the detection result of a second PDCCH in each sub-band in the BWP, wherein the second PDCCH is a common PDCCH.
A method for detecting a Physical Downlink Control Channel (PDCCH), comprising:

the method comprises the steps that network equipment determines first CORESET configuration from multiple control resource sets CORESET configuration aiming at usable sub-bands in a downlink bandwidth part BWP configured on an unlicensed spectrum carrier, wherein the CORESET configuration does not limit absolute positions of frequency domain resources, and the usable sub-bands are sub-bands for which the network equipment successfully executes LBT;

based on the first CORESET configuration, the network equipment determines a resource position for detecting a first PDCCH on the available subband, wherein the first PDCCH is used for scheduling terminal equipment;

and the network equipment sends the first PDCCH to the terminal equipment on the determined resource position.
The method of claim 24, wherein determining a first CORESET configuration from a plurality of CORESET configurations comprises:

according to the available sub-band, the network device determines the first CORESET configuration corresponding to the available sub-band from a plurality of CORESET configurations.
The method according to claim 25, wherein said first CORESET configuration is determined from said plurality of CORESET configurations based on said available subbands and their correspondence to CORESET configurations.
The method of any one of claims 24 to 26, further comprising:

and sending indication information on the usable sub-band, wherein the indication information is used for indicating the terminal equipment to adopt the first CORESET configuration in the plurality of CORESET configurations to determine the resource position.
The method of claim 27, wherein the indication information is carried in a common PDCCH.
The method of claim 27 or 28, wherein the indication information indicates a resource location for detecting a first PDCCH on a plurality of the available subbands based on the first CORESET configuration, wherein the indication information is carried on one subband in the plurality of the available subbands.
The method according to any 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 available sub-bands.
The method according to any 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 a plurality of said available subbands.
The method of any one of claims 24 to 31, further comprising:

and the network equipment sends configuration information to the terminal equipment, wherein the configuration information is used for indicating the various CORESET configurations.
The method according to any of claims 24 to 32, wherein the number of blind tests indicated by each of the CORESET configurations does not exceed the maximum number of blind tests allowed by the terminal device.
The method of any one of claims 24 to 33, further comprising:

the network device indicates that the subband is available through a second PDCCH of the available subband, wherein the second PDCCH is a common PDCCH.
A method for detecting a Physical Downlink Control Channel (PDCCH), comprising:

the method comprises the steps that a network device sends indication information to a terminal device, wherein the indication information is used for the terminal device to determine a resource position of a first PDCCH on an available subband in a downlink bandwidth part BWP configured on an unlicensed spectrum carrier, the first PDCCH is used for scheduling the terminal device, and the available subband is a subband on which the network device successfully performs listen before talk LBT;

and the network equipment sends the first PDCCH to the terminal equipment.
The method of claim 35, wherein the indication information is carried in a common PDCCH.
The method according to claim 35 or 36, wherein the indication information indicates that the resource location is determined with a first CORESET configuration of a plurality of CORESETs, wherein an absolute location of a frequency domain resource is not defined in the CORESET configuration.
The method of claim 37, further comprising:

and the network equipment sends configuration information to the terminal equipment, wherein the configuration information is used for indicating the various CORESET configurations.
The method according to claim 37 or 38, wherein the number of blind tests indicated by each of said CORESET configurations does not exceed the maximum number of blind tests allowed by said terminal device.
The method of any of claims 36 to 39, wherein the indication information indicates a resource location for detecting a first PDCCH on a plurality of the available subbands based on the first CORESET configuration, wherein the indication information is carried on one of the plurality of the available subbands.
The method of claim 40, wherein the first CORESET configuration indicates a frequency domain length covering at least a portion of frequency domain resources of each of the plurality of available subbands.
A method for detecting a Physical Downlink Control Channel (PDCCH), comprising:

the method comprises the steps that network equipment determines a resource position of a first PDCCH to be detected by terminal equipment from a resource position of the first PDCCH detected by the terminal equipment which is pre-configured for an available subband in a downlink bandwidth part BWP configured on an unlicensed spectrum carrier;

and the network equipment sends the first PDCCH to the terminal equipment according to the resource position of the first PDCCH to be detected by the terminal equipment.
The method of claim 42, wherein the network device determines the resource location to be detected from the resource locations for detecting the first PDCCH that are pre-configured for the available subbands, and comprises:

and based on the maximum blind detection times allowed by the terminal equipment, the network equipment determines the resource position of the first PDCCH to be detected from the resource positions for detecting the first PDCCH, which are pre-configured for the available sub-bands.
The method of claim 42 or 43, wherein the preconfigured resource locations are determined based on a control resource set (CORESET) and a search space preconfigured for the subbands.
The method of any one of claims 42 to 44, further comprising:

the network device indicates that the subband is available through a second PDCCH of the available subband, wherein the second PDCCH is a common PDCCH.
An apparatus for detecting a Physical Downlink Control Channel (PDCCH), comprising:

a determining module, configured to determine, from a plurality of control resource set CORESET configurations, a first CORESET configuration for an available subband in a downlink bandwidth portion BWP configured on an unlicensed spectrum carrier, where an absolute position of a frequency domain resource is not defined in the CORESET configuration, and the available subband is a subband in which a network device successfully performs listen before talk over 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 used for scheduling the terminal device;

a detection module to detect the first PDCCH based on the determined resource location.
The apparatus according to claim 46, wherein the determining module is specifically configured to determine the first CORESET configuration corresponding to the available subband from the plurality of CORESET configurations according to the available subband.
The apparatus according to claim 47, wherein the first CORESET configuration is determined from the plurality of CORESET configurations according to the available subbands and their correspondence to CORESET configurations.
The apparatus as claimed in claim 46, wherein the determining module is specifically configured to determine the first CORESET configuration from the plurality of CORESET configurations based on indication information detected on the available subbands, and wherein the indication information is used to indicate that the resource location is determined using the first CORESET configuration from the plurality of CORESET configurations.
The apparatus of claim 49, wherein the indication information is carried in a common PDCCH.
The apparatus of claim 49 or 50, wherein the indication information indicates a resource location for detecting a first PDCCH on a plurality of the available subbands based on the first CORESET configuration, wherein the indication information is carried on one subband among the plurality of the available subbands.
The apparatus according to any 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 available subbands.
The apparatus according to any 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 a plurality of the available subbands.
The apparatus of any one of claims 46 to 53, further comprising:

and the receiving module is used for receiving configuration information sent by a network side, wherein the configuration information is used for indicating the plurality of CORESET configurations.
The apparatus according to any of claims 46 to 54, wherein the number of blind tests indicated by each of the CORESET configurations does not exceed a maximum number of blind tests allowed by the terminal device.
The apparatus of any one of claims 46-55, wherein the determining module is further configured to:

and determining usable sub-bands in the BWP according to the detection result of a second PDCCH in each sub-band in the BWP, wherein the second PDCCH is a common PDCCH.
An apparatus for detecting a Physical Downlink Control Channel (PDCCH), comprising:

the detection module is used for detecting indication information from the network equipment on a sub-band of a downlink bandwidth part BWP configured by the unlicensed spectrum carrier;

a determining module, configured to determine, when the indication information is detected on the subband, a resource location for detecting a first PDCCH on the subband according to an indication of the indication information, where the first PDCCH is used to schedule the terminal device;

the detecting module is further configured to detect the first PDCCH based on the determined resource location.
The apparatus of claim 57, wherein the indication information is carried in a common PDCCH.
The apparatus as claimed in claim 57 or 58, wherein the indication information indicates that the resource location is determined using a first CORESET configuration of a plurality of CORESET configurations, where an absolute location of a frequency domain resource is not defined;

the determining module is specifically configured to:

and determining the resource position for detecting the first PDCCH on the subband according to the first CORESET configuration.
The apparatus according to claim 59, wherein the determining module is specifically configured to:

determining a second CORESET configuration based on the first CORESET configuration and an offset, wherein the second CORESET configuration defines an absolute position of a frequency domain resource;

and the terminal equipment determines the resource position for detecting the first PDCCH on the subband according to the second CORESET configuration.
The apparatus of claim 59 or 60, further comprising:

and the receiving module is used for receiving configuration information sent by a network side, wherein the configuration information is used for indicating the plurality of CORESET configurations.
The apparatus according to any of claims 59-61, wherein the number of blind tests indicated by each of the CORESET configurations does not exceed a maximum number of blind tests allowed by the terminal device.
The apparatus of any one of claims 58 to 62, wherein the indication information indicates a resource location for detecting a first PDCCH on a plurality of the subbands based on the first CORESET configuration, wherein the indication information is carried on one of the plurality of the subbands.
The apparatus of claim 63, wherein the first CORESET configuration indicates a frequency domain length covering at least a portion of frequency domain resources of the plurality of the sub-bands.
An apparatus for detecting a Physical Downlink Control Channel (PDCCH), comprising:

a determining module, configured to determine, for an available subband in a downlink bandwidth portion BWP configured on an unlicensed spectrum carrier, a resource location to be detected from resource locations for detecting a first PDCCH, which are preconfigured for the available subband;

and the detection module is used for detecting the first PDCCH based on the position of the resource to be detected.
The apparatus according to claim 65, wherein the determining module is specifically configured to:

and determining the position of the resource to be detected from the resource position for detecting the first PDCCH preconfigured for the available sub-band based on the maximum blind detection times allowed by the terminal equipment.
The apparatus of claim 65 or 66, wherein the preconfigured resource locations are determined based on a control resource set (CORESET) and a search space preconfigured for the subbands.
The apparatus of any one of claims 65-67, wherein the determining module is further configured to:

and determining usable sub-bands in the BWP according to the detection result of a second PDCCH in each sub-band in the BWP, wherein the second PDCCH is a common PDCCH.
An apparatus for detecting a Physical Downlink Control Channel (PDCCH), comprising:

a determining module, configured to determine, from a plurality of control resource set CORESET configurations, a first CORESET configuration for an available subband in a downlink bandwidth portion BWP configured on an unlicensed spectrum carrier, where an absolute position of a frequency domain resource is not defined in the CORESET configuration, and the available subband is a subband on which LBT is successfully performed by a network device;

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 for scheduling terminal equipment;

and a sending module, configured to send the first PDCCH to the terminal device in the determined resource location.
The apparatus of claim 69, wherein the determining module is specifically configured to:

and determining the first CORESET configuration corresponding to the available sub-band from a plurality of CORESET configurations according to the available sub-band.
The apparatus as claimed in claim 70, wherein the first CORESET configuration is determined from the plurality of CORESET configurations according to the available sub-bands and their corresponding relationship.
The apparatus of any one of claims 69-71, wherein the sending module is further configured to:

and sending indication information on the usable sub-band, wherein the indication information is used for indicating the terminal equipment to adopt the first CORESET configuration in a plurality of CORESET configurations to determine the resource position.
The apparatus of claim 72, wherein the indication information is carried in a common PDCCH.
The apparatus of claim 72 or 73, wherein the indication information indicates a resource location for detecting a first PDCCH on a plurality of the available subbands based on the first CORESET configuration, wherein the indication information is carried on one of the plurality of the subbands.
The apparatus according to any 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 of the available sub-bands.
The apparatus according to any of claims 69-74, wherein the frequency domain length indicated by the first CORESET configuration covers at least part of the frequency domain resources of each of a plurality of said available subbands.
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, the configuration information indicating the plurality of CORESET configurations.
The apparatus according to any of claims 69 to 77, wherein the number of blind tests indicated by each of the CORESET configurations does not exceed the maximum number of blind tests allowed by the terminal device.
The apparatus of any one of claims 69 to 78, further comprising:

an indication module, configured to indicate that the available subband is available through a second PDCCH of the available subband, where the second PDCCH is a common PDCCH.
An apparatus for detecting a Physical Downlink Control Channel (PDCCH), comprising:

a sending module, configured to send indication information to a terminal device, where the indication information is used for the terminal device to determine a resource location of a first PDCCH on an available subband in a downlink bandwidth portion BWP configured on an unlicensed spectrum carrier, where the first PDCCH is used to schedule the terminal device, and the available subband is a subband where a network device successfully performs listen before talk LBT;

the sending module is further configured to send the first PDCCH to the terminal device.
The apparatus of claim 80, wherein the indication information is carried in a common PDCCH.
The apparatus as claimed in claim 80 or 81, wherein the indication information indicates that the resource location is determined with a first CORESET configuration of a plurality of CORESET configurations of which the absolute location of the frequency domain resource is not defined.
The apparatus of claim 82, wherein the sending module is further configured to:

and sending configuration information to the terminal equipment, wherein the configuration information is used for indicating the various CORESET configurations.
The apparatus as claimed in claim 82 or 83, wherein the number of blind tests indicated by each of the CORESET configurations does not exceed the maximum number of blind tests allowed by the terminal device.
The apparatus of any one of claims 81-84, wherein the indication information indicates a resource location for detecting a first PDCCH on a plurality of the available subbands based on the first CORESET configuration, wherein the indication information is carried on one subband among the plurality of the available subbands.
The apparatus of claim 85, wherein the first CORESET configuration indicates a frequency domain length that covers at least a portion of frequency domain resources of each of the plurality of available subbands.
An apparatus for detecting a Physical Downlink Control Channel (PDCCH), comprising:

a determining module, configured to determine, for an available subband in a downlink bandwidth portion BWP configured on an unlicensed spectrum carrier, a resource location of a first PDCCH to be detected by a terminal device from resource locations of the first PDCCH detected by the terminal device, where the first PDCCH is configured for the available subband;

and the sending module is used for sending the first PDCCH to the terminal equipment according to the resource position of the first PDCCH to be detected by the terminal equipment.
The apparatus of claim 87, wherein the determining module is specifically configured to:

and based on the maximum blind detection times allowed by the terminal equipment, the network equipment determines the resource position of the first PDCCH to be detected from the resource positions for detecting the first PDCCH, which are pre-configured for the available sub-bands.
The apparatus of claim 87 or 88, wherein the preconfigured resource locations are determined based on a control resource set, CORESET, preconfigured for the subbands and a search space.
The apparatus of any one of claims 87 to 89, further comprising:

an indication module, configured to indicate that the available subband is available through a second PDCCH of the available subband, where the second PDCCH is a common PDCCH.
A communication device, comprising: a processor and a memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory, performing the method of any of claims 1 to 45.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 45.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 45.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 45.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 45.