METHOD OF COMMUNICATION AND COMMUNICATION APPARATUS

Abstract

This application provides a communication method and a communication device. Based on the initial configuration information, a terminal can perform blind detection of candidate PDCCH locations configured by a network device for a first group of CORESETs a maximum of a certain number of times. In contrast to a conventional solution where the terminal blindly detects a PDCCH for all CORESETs in a target cell a maximum of a certain number of times, blind detection is performed for each CORESET corresponding to each TRP a greater number of times. This improves programming flexibility.

Description

METHOD OF COMMUNICATION AND COMMUNICATION APPARATUS CROSS REFERENCE TO RELATED APPLICATIONS This application claims priority from Chinese Patent Application No. 201910760959.8, filed with the National Intellectual Property Administration of China on August 16, 2019, entitled COMMUNICATION METHOD AND COMMUNICATION APPARATUS, which is incorporated herein by reference in its entirety; and this application claims priority from Chinese Patent Application No. 201910943941.1, filed with the National Intellectual Property Administration of China on September 30, 2019, entitled COMMUNICATION METHOD AND COMMUNICATION APPARATUS, which is incorporated herein by reference in its entirety. FIELD OF INVENTION This application relates to the field of mobile communication technologies and, in particular, to a communication method and a communication device. BACKGROUND OF THE INVENTION Currently, when user equipment (UE) receives a physical downlink control channel (PDCCH), a commonly used method is blind detection. This means there can be multiple candidate locations for the PDCCH. These candidate locations can refer to multiple dimensions, such as a time-domain resource, a frequency-domain resource, or a code-domain resource. By performing blind detection on a preconfigured or predefined candidate location, the UE can successfully detect downlink control information (DCI) carried on the PDCCH. A single-cell blind detection capability of the UE is defined in new radio (NR). When the UE receives a PDCCH transmitted using a cell, the number of candidate PDCCH locations in the cell in each slot does not exceed Σ. The number of times the UE blindly detects the PDCCH in the cell in each slot does not exceed μ. A value of Af is related to a set of cell parameters (numerology). However, currently, a blind detection capability for the UE's PDCCH is not defined in a multi-transmission / receiver point (M-TRP) scenario. If the terminal still performs blind detection based on a blind detection capability of a CRQRZn / ZZÜZ / 3 / YILI single cell, when multiple TRPs program the terminal in a server cell, there is a limited number of times that can be allocated to each TRP for blind detection. Consequently, the flexibility of programming the terminal by a network device is affected. BRIEF DESCRIPTION OF THE INVENTION This application provides a communication method and a communication apparatus for optimizing a form of blind PDCCH detection of a terminal when the terminal is programmed by a plurality of transmit / receive points in a server cell. In one aspect, this application provides a communication method. The method can be implemented by a terminal such as a mobile phone or a chip in a terminal. The method includes that: the terminal can receive the first configuration information from a network device, wherein the first configuration information is used to indicate a configured quantity of candidate PDCCH locations in a unit of time corresponding to a first control resource set (CORESET); and when the configured quantity is greater than a first quantity, the terminal can detect a PDCCH in candidate PDCCH locations whose quantity is less than or equal to the first quantity;or when the configured quantity is less than or equal to a first quantity, the terminal can detect a PDCCH in candidate PDCCH locations whose quantity is less than or equal to the configured quantity, where the first quantity is a preset maximum number of candidate PDCCH locations in a unit of time corresponding to a CORESET group in a target cell and the first CORESET group is one of a plurality of CORESET groups in the target cell. According to this method, the terminal can perform blind detection of candidate PDCCH locations configured by the network device for the first CORESET group, based on the initial configuration information, up to a certain number of times. In contrast to a conventional solution where the terminal blindly detects the PDCCH for all CORESETs in the target cell up to a certain number of times, blind detection is performed for each CORESET corresponding to each TRP a greater number of times. Therefore, programming flexibility can be improved. In one possible design, the terminal can receive the first information from the network device and the first information is used to indicate the first CORESET group. In one possible design, the first piece of information includes a top-layer index whose value is 0. Alternatively, a value of the first piece of information is 0. In one possible design, if the target cell is one of a plurality of cells in which CRQRZn / ZZÜZ / 3 / YILI operates the terminal. The terminal can determine a third quantity based on the terminal's blind detection capability and a second quantity. The second quantity is a specified maximum number of candidate PDCCH locations in a time unit corresponding to a CORESET group in a first cell. The third quantity is a specified maximum number of candidate PDCCH locations in a time unit corresponding to the first cell. The first cell includes one or more cells that are in the plurality of cells and whose parameter sets have the same value. The number of times the terminal blindly detects the PDCCH in a time unit corresponding to each CORESET group in the first cell does not exceed the second and third quantities. In one possible design, the third quantity follows the following formula: ΜΡΒ^Η''μ=Mrocen(.....* «t + .....M·” * Λ1 + where, ^.^je represents the third quantity, ^ represents the detection capability at ' 'PDSSIbligas de PDCCH, M^cch^ represents the second quantity, j^DL^^nuitnrp represents a number of cells, in the first cell, for which a plurality of CORESET groups are configured, N^μ'χ,η!ζΙαΐΓρ represents a number of cells, in the first cell, for which a CORESET group is configured, represents a number of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, N^¿single,rp represents a number of cells, in all cells, for which a CORESET group is configured, a sum of N^'mM'py N^s,nsletrpes a total number of all cells and a value of n1 is determined based on the terminal's capacity. In one possible design, the third quantity follows the following formula: is tota!, slot. μ _ xr cap max.slot .μ / xj DL .μ jmdú -trp * i . xr DL .u ..tingle -trpx / V / x_τ DL . j jmt'.ti -trp * i . xj DL . j .single -trp x1ViPDCCH— 1Ncclls1V1PDCCH 'iN|retís ΠΙΤΙΊce / / sJ V 1Ncc / / s. ti 1 τ 1Mlt / ¡s; / where, ota ,£Ot represents the third quantity, represents the blind detection capability of PDCCH, represents the second quantity, / y / i / ''” / ,w' / Te represents a quantity of cells, in the first cell, for which a plurality of are configured CRQRZn / ZZÜZ / 3 / YILI CORESET groups a quantity of a plurality of CORESET groups is n1, ^LfJ'stng / e,rPrepresenia a quantity of cells, in the first cell, for which a CORESET group is configured, N^¿muMrp represents a quantity of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, represents a quantity of cells, in all cells, for which a CORESET group is configured and a sum of N^muMrpy N^'smsletrps a total quantity of all cells. In a possible design, the number of times the terminal blindly detects the PDCCH in the time unit corresponding to the first cell does not exceed a product of the second quantity and a number of CORESET groups in the first cell. In a possible design, if the target cell is one of the plurality of cells on which the terminal operates, the terminal can determine a fifth quantity based on the blind detection capability of the terminal's PDCCH and a fourth quantity. The fourth quantity is a specified maximum number of non-overlapping control channel elements (CCEs) in a time unit corresponding to a CORESET group in a second cell. The fifth quantity is a maximum number of non-overlapping CCEs in a time unit corresponding to the second cell. The second cell includes one or more cells that are part of the plurality of cells and whose parameter sets have the same value. The number of non-overlapping CCEs detected by the terminal in a time unit corresponding to each CORESET group in the second cell does not exceed the fourth and fifth quantities. In one possible design, the fifth quantity fulfills the following formula: ^total.slot.u _ xr cap max.slot / xj DL .p.multl -trp * i . xr DL .μ .single -!rp\ / / xτ DL . i, mullí -trp * i , x·j DL ,; .single -trp \UPDCCH— 2Vcclls ' PDCCH 'k iNcells ft L ~r 1λ <v / / s7 / / , L INce / / sHIT nce¡ / x1 / ' =üdonde, Cpdcch01'A represents the fifth quantity, TV^ represents the blind detection capability of PDCCH, ^ represents the fourth quantity, ^Drmuiu-trp represents a CPDCCH number of cells, in the second cell, for which a plurality of CORESET groups are configured, TV0^''''^'77 represents the number of cells, in the first cell, for which a CORESET group is configured, N^pmuMrp represents the number of cells, in all cells configured by the network device, for which a plurality CRQRZn / ZZÜZ / 3 / YILI of CORESET groups, N^s,nsletrp represents the number of cells, in all cells, for which a configured CORESET group is set, the sum of N^n,uMrpy 'total number of all cells and the value of n1 is determined based on the capacity of the terminal. In one possible design, the fifth quantity fulfills the following formula: z' tota!. slot.μ _ xj cap max.slot . / 1Nce¡ / s7 / tV 1Mce¡sΠΙΤ 1Nce / / s7 / 7 = ° where, Cpdcch01 represents the fifth quantity, represents the blind detection capability of PDCCH, represents the fourth quantity, Ν^,''ηι'ίΜΓρ represents a CPDCCH number of cells, in the second cell, for which a plurality of CORESET groups are configured, a number of a plurality of CORESET groups is n1, TV^^'^ / ^repreSenta |acg^^g^ qeceldas, in the first cell, for which a CORESET group is configured, '^represents the number of cells, in all the cells configured by the network device, for which a plurality of CORESET groups are configured, represents the number of cells, in all the cells, for which a CORESET group is configured and the sum of N^'mu,ttrpy N^¿s,8le,rpes the total number of all cells. In a possible design, the number of non-overlapping CCEs detected by the terminal in the time unit corresponding to the second cell does not exceed a product of the fourth quantity and a number of CORESET groups in the second cell. In a possible design, determining a value of n1 based on the terminal's capability includes: The value of n1 is less than or equal to the second piece of information, the second piece of information is used to indicate a value of the PDCCH blind detection capability, and the second piece of information is 1 or 2. In one possible design, the second piece of information is information reported by the terminal for each frequency band or combination of frequency bands. In one possible design, the blind detection capability of the terminal's PDCCH can be a number of transmit / receive points corresponding to the plurality of cells. Alternatively, the blind detection capability of the terminal's PDCCH is my 1 <m<16. En otras palabras, m es menor que 16 y mayor o igual CRQRZn / ZZÜZ / 3 / ΥΙΛΙ than 1. In one possible design, the terminal can send a terminal multi-TRP coordination capability to the network device, where the multi-TRP coordination capability is used to determine the terminal's PDCCH blind sensing capability; and the terminal can receive a first indication from the network device, where the first indication is used to indicate the PDCCH blind sensing capability and the PDCCH blind sensing capability is one or more multi-TRP coordination capabilities; or each multi-TRP coordination capability is one of one or more candidate parameter values ​​and the PDCCH blind sensing capability value is a candidate parameter value that does not exceed a maximum value of one or more multi-TRP coordination capabilities. In one possible design, the terminal's multi-TRP coordination capability can be represented using the symbol N2. The terminal can report one or more N2 multi-TRP coordination capabilities (or multi-TRP coordination capability parameters) supported by the terminal to the network device, where N2 is greater than or equal to 1. The maximum value of N2 is a number (which is a constant) of transmit / receive points for coordinated transmission, for example, 2 (which can be another value). Optionally, N2 can be configured as follows: 1 <N2<2. En otras palabras, N2 es menor o igual que 2 y mayor o igual que 1. N2 puede no ser un número entero. Each multi-TRP N2 coordination capability value can be one of the candidate N2 values. There can be one or more candidate N2 values. The same candidate N2 value is configured for both the terminal and the network device. The plurality of candidate N2 values ​​can be discrete values. When the terminal reports one or more multi-TRP N2 coordination capabilities, TV'X, which the network device can configure, can be one of the one or more multi-TRP N2 coordination capabilities reported by the terminal. Alternatively, support can be implemented with a smaller N2 value reported by the terminal. For example, the candidate N2 values ​​are 1, 1.5, 2, 2.5, ... and if the N2 value reported by the terminal is 2, the network device can select an N value from the candidate N2 values ​​1, 1.5, and 2 that are less than or equal to (or less than) 2 and are within the candidate N2 values. Here, TV'X represents the blind detection capability of the terminal's PDCCH. In this design, the value of can be determined more flexibly. CRQRZn / ZZÜZ / 3 / YILI In one possible design, the terminal can send the second piece of information to the network device, and the second piece of information is used to indicate the value of the PDCCH blind detection capability. In one possible design, when a quantity of a plurality of cells is greater than a value of the blind detection capability of PDCCH, the terminal can determine the third quantity based on a value of a set of parameters of the first cell, the second quantity, the number of CORESET groups in the first cell, and the number of CORESET groups in the plurality of cells. Specifically, the terminal will be able to determine the third amount based on the following formula: a κίοίαΐ,χίοί,μ PDCCH NZ. ar max,slot,\L ' PDCCH ,where pdcch1 μ represents the third quantity, represents the blind detection capability of the terminal PDCCH, represents the second quantity, j^OL^jrp represents the quantity of CORESET groups in the first cell, 3 cdls ΣΣ<'Jrepresents the number of CORESET groups in the plurality of cells and 7=0 c=0 A represents a set of parameters for each cell in the first cell. A value for this can be determined based on Table 1. In one possible design, when a quantity from a plurality of cells is greater than a value of the blind detection capability of PDCCH, the terminal can determine the fifth quantity based on a value from a set of parameters of the second cell, the fourth quantity, the number of CORESET groups in the second cell, and the number of CORESET groups in the plurality of cells. total,slot ,μ PDCCH cap max,slot ,μ cells * PDCCH where pdcch0^ represents the fifth quantity, represents the blind detection capability of the terminal's PDCCH, represents a maximum quantity of non-overlapping CCEs in a cell whose numerology has a value of P in a single-cell transmission mode, is a cell c whose CRQRZn / ZZÜZ / 3 / YILI cells numerology is A, represents a total amount of TRPs in all cells and / —0 c=0 / 7 represents a set of parameters for each cell in the second cell. A value of CpDccH1'μ seρυθόθ determines a value of and can be consulted in Table 2 as a function of a value of / 7. In a possible design, when a quantity of a plurality of cells is less than or equal to a value of the blind detection capability of PDCCH, the third quantity can be equal to the second quantity and / or the fifth quantity can be equal to the fourth quantity. In another method of communication provided in an embodiment of this application, a terminal can receive configuration information from a plurality of CORESETs from a network device, wherein the configuration information of each CORESET is used to indicate a candidate downlink control channel (PDCCH) location corresponding to the CORESET and each CORESET corresponds to a TRP; the terminal can determine one or more monitoring occasions (intervals) based on the configuration information of the plurality of CORESETs, wherein each interval is used to indicate the duration of monitoring of a PDCCH by the terminal; and the terminal can receive, based on one or more intervals, control information sent by the network device through the PDCCH.In this way, the terminal can determine one or more intervals based on the configuration information of each CORESET and blindly detect the PDCCH in each interval, to avoid clutter during blind detection. In one possible design, the terminal can determine the interval corresponding to each CORESET based on the information about each CORESET. In a possible design, the interval length corresponding to each CORESET is determined based on a maximum length for each CORESET. In a possible design, the terminal can determine that a separation in the time domain between any two pluralities of intervals is not less than a minimum separation in the time domain between the intervals admitted by the terminal. In one possible design, the terminal can send an interval separation capability to the network device, and the interval separation capability is used to indicate the minimum time domain separation. In this design, the terminal blindly detects the PDCCH in the interval corresponding to each CORESET, and the terminal detects no more than one PDCCH in each interval. In this example, the UE can report the minimum time-domain separation between intervals to detect the DCI less frequently. CRQRZn / ZZÜZ / 3 / YILI In a possible design, if the terminal determines an interval based on information about the plurality of CORESETs, the length of the interval can be a sum of the maximum lengths of the CORESETs. In one possible design, if the terminal determines an interval based on information about the plurality of CORESETs, the terminal can determine, based on a certain number of CORESETs, a maximum number of PDCCHs detected within that interval. This maximum number is less than or equal to a programmable capacity of the terminal's PDCCH, and the programmable capacity of the terminal's PDCCH is used to indicate the maximum number of PDCCHs detected by the terminal within an interval. In one possible design, the terminal can send the terminal's PDCCH programming capability to the network device. In this design, the terminal can receive the PDCCH in the interval corresponding to the plurality of CORESETs, and the terminal can detect a plurality of PDCCHs in each interval. The number of PDCCHs detected by the terminal in each interval does not exceed a maximum number of PDCCHs received in an interval that is compatible with the terminal. When the plurality of intervals overlap, the terminal may not perform blind detection in an overlapping interval. From a second perspective, this request provides a method of communication. The method can be implemented by a network device or a chip within a network device. The network device may include an access network device such as a base station. According to the method, the network device can determine the first configuration information, wherein the first configuration information is used to indicate a configured number of candidate PDCCH locations in a time unit corresponding to a first CORESET group and the first CORESET group is one of a plurality of CORESET groups in a target cell; and the network device sends the first configuration information to a terminal. In a possible design, the configured quantity can be greater than, equal to, or less than a first quantity, and the first quantity is a preset maximum number of candidate PDCCH locations in a unit of time corresponding to a CORESET group in the target cell. In one possible design, the network device can send the first information to the terminal and the first information is used to indicate the first CORESET group. In one possible design, the first piece of information includes a top-layer index whose value is 0. Alternatively, a value of the first piece of information is 0. In one possible design, if the target cell is one of a plurality of cells on which the terminal operates, the network device can determine a third quantity based on CRQRZn / ZZÜZ / 3 / YILI a blind detection capability of the terminal's PDCCH and a second quantity, wherein the second quantity is a specified maximum number of candidate PDCCH locations in a time unit corresponding to a CORESET group in a first cell, the third quantity is a specified maximum number of candidate PDCCH locations in a time unit corresponding to the first cell and the first cell includes one or more cells that are in the plurality of cells and whose parameter sets have the same value; and the network device can determine the second configuration information based on the third quantity, wherein the second configuration information is used to configure a candidate PDCCH location for the terminal in the time unit corresponding to the first cell. In one possible design, the third quantity follows the following formula: total.xlol.ft _ A 7 cap i, max.slot .μ ( xr DL .μ.mullí -up * 1 . xj DL .pimple-lrp\ / V-1 / xj DL. / . mullí -trp * i . x τ DL ,j .single ·1ιρ\1V1PDCCH—^cclls PDCCHiNceliatl 1celiaJ / .iNcelia ^^^cellsJ / / = ° where bol / e represents the third quantity, represents the blind detection capability of PDCCH, represents the second quantity, N®L,ft''milM'p represents a number of cells, in the first cell, for which a plurality of CORESET groups are configured, N^Lp'sin8le,rp represents a number of cells, in the first cell, for which a CORESET group is configured, N^m'Mrp represents a number of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, represents a number of cells, in all cells, for which a CORESET group is configured, a sum of N^¿muM,py N^¿'s,n8le>rp is a total number of all cells and a value of n1 is determined based on the terminal's capability. In one possible design, the third quantity follows the following formula: Λ / cap Λ xmax.slol.» ( ^DL, / i.nmlthlip * < , x |DL.p,slngl&np\ / X ' / ^Οα.ιηιιΐιρηρ * , , χτDCJ,smghvrp\YVcclls ^WPDCC1IV±VxVís·1Ncells7cells7 / 7=° ,wheret0t9,5Dt represents the third quantity, A7“^ represents the blind detection capability of PDCCH, represents the second quantity, Ν^'μ'1ι,ι,'ρ represents a quantity of cells, in the first cell, for which a plurality of 4' = are configured CRQRZn / ZZÜZ / 3 / YILI CORESET groups a quantity of a plurality of CORESET groups is n1, a quantity of cells, in the first cell, for which a CORESET group is configured, N^¿muMrp represents a quantity of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, represents a quantity of cells, in all cells, for which a CORESET group is configured and a sum of N^muMrpy N^'smsletrps a total quantity of all cells. In a possible design, the number of candidate PDCCH locations configured by the network device in a time unit corresponding to each CORESET group in the first cell does not exceed the second and third amounts. In a possible design, the number of candidate PDCCH locations configured by the network device in the time unit corresponding to the first cell does not exceed a product of the second quantity and a number of CORESET groups in the first cell. In a possible design, if the target cell is one of the plurality of cells in which the terminal operates, the network device can determine a fifth quantity based on the blind detection capability of the terminal's PDCCH and a fourth quantity, wherein the fourth quantity is a specified maximum quantity of non-overlapping CCEs in a time unit corresponding to a CORESET group in a second cell, the fifth quantity is a maximum quantity of non-overlapping CCEs in a time unit corresponding to the second cell, and the second cell includes one or more cells that are in the plurality of cells and whose parameter sets have the same value; and the network device can determine the third configuration information based on the fifth quantity, wherein the third configuration information is used to configure a maximum quantity of non-overlapping CCEs for the terminal in the time unit corresponding to the second cell. For example, a maximum number of non-overlapping CCEs configured by the network device in a time unit corresponding to each CORESET group in the second cell, does not exceed the fourth and fifth amounts. In one possible design, the fifth quantity fulfills the following formula: / 3 _ λ rcap ^.max.slot / / CxjDE / uW / Κφ * i , / Cpdcch01'μ represents the fifth quantity, it represents the detection capability CRQRZn / ZZnZ / 3 / YILI PDCCH Blindly by PDCCH, it represents the fourth amount, it represents a PDCCH represents the number of cells, in the second cell, for which a plurality of CORESET groups are configured, N^¿muM represents the number of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, N^psm8letlp represents the number of cells, in all cells, for which a configured CORESET group is configured, the sum of Ν^^'η8ΐβίΓρes 'a car|tidad total de todas las celdas y el valor de n1 se determinado en función de la capaz de la terminal. In one possible design, the fifth quantity fulfills the following formula: where Cpdcch01 μ represents the fifth quantity, N represents the blind detection capability of PDCCH, represents the fourth quantity, represents a PDCCH represents the number of cells in the second cell for which a plurality of CORESET groups are configured. The number of cells in the first cell for which a CORESET group is configured is n1. '^represents the number of cells in all cells configured by the network device for which a plurality of CORESET groups are configured. N^ins'etrp represents the number of cells in all cells for which a CORESET group is configured, and the sum of N^ρηΜ'ργ N^'sl8letrpes is the total number of all cells. In a possible design, a maximum number of non-overlapping CCEs configured by the network device in the time unit corresponding to the second cell, does not exceed a product of the fourth quantity and a number of CORESET groups in the second cell. In a possible design, determining a value of n1 based on the terminal's capability includes: The value of n1 is less than or equal to the second piece of information, the second piece of information is used to indicate a value of the PDCCH blind detection capability, and the second piece of information is 1 or 2. CRQRZn / ZZnZ / 3 / YILI In one possible design, the second piece of information is information reported by the terminal for each frequency band or combination of frequency bands. In one possible design, the value of the blind detection capability of the terminal's PDCCH is a number of transmit / receive points corresponding to the plurality of cells; or the value of the blind detection capability of the terminal's PDCCH is my 1 <m<16, en otras palabras, m es menor que 16 y es mayor o igual que 1. In a possible design, the network device can receive one or more multi-TRP coordination capabilities from the terminal; the network device can determine the terminal's PDCCH blind sensing capability based on one or more multi-TRP coordination capabilities, where the PDCCH blind sensing capability is one of the one or more multi-TRP coordination capabilities, or each multi-TRP coordination capability is one of one or more candidate parameter values ​​and the PDCCH blind sensing capability value is a candidate parameter value that does not exceed a maximum value of one or more multi-TRP coordination capabilities; and the network device can send a first indication to the terminal, where the first indication is used to indicate the PDCCH blind sensing capability. In one possible design, the network device can receive the second piece of information from the terminal, and the second piece of information is used to indicate the value of the blind detection capability of the terminal's PDCCH. In another method of communication provided in an embodiment of this application, a network device can generate configuration information for a plurality of CORESETs, wherein the configuration information for each CORESET is used to indicate a candidate downlink control channel (PDCCH) location corresponding to the CORESET, and each CORESET corresponds to a TRP; and the network device can send the configuration information for the plurality of CORESETs to a terminal. In a possible design, the length of an interval corresponding to each CORESET is determined based on a maximum length of each CORESET. In one possible design, the network device can determine a time-domain separation between any two pluralities of intervals based on a minimum time-domain separation between intervals supported by the terminal. For example, the time-domain separation between any two pluralities of intervals is no less than the minimum time-domain separation between intervals supported by the terminal. In one possible design, the network device can receive an interval separation capability from the terminal, and the interval separation capability is used to indicate the minimum time domain separation. CRQRZn / ZZÜZ / 3 / YILI In one possible design, the network device can receive a programmable PDCCH capability from the terminal, and the programmable PDCCH capability of the terminal is used to indicate a maximum number of PDCCHs detected by the terminal in an interval. According to a third aspect, an implementation of this request provides a communications device. The communications device can be configured to perform the steps carried out by the terminal in any of the first aspect or possible designs of the first aspect. The communications device can implement the function, step, or operation of the above method using a hardware structure, a software module, or a combination of a hardware structure and a software module. For example, a functional module corresponding to the function, step, or operation of the above method can be arranged in the communications device to help the communications device perform the method. When the communications device shown in the third aspect is implemented using a software module, the device may include a communications module and a processing module coupled together. The communications module may be configured to support the communications device in carrying out communication. The processing module may be used by the communications device to perform a processing operation, for example, generating information / a message that needs to be sent, or processing a received signal to obtain information / a message. For example, the communications module may be configured to perform a sending action and / or a receiving action performed by the terminal in any of the first aspects and / or the possible designs of the first aspect, for example, an action of sending information, a message or signaling from the terminal to the network device, or an action of receiving information, a message or signaling from the network device and / or the processing module may be configured to perform a processing action performed by the terminal in any of the first aspect and / or the possible designs of the first aspect, for example, controlling the communications module to perform operations such as receiving and / or sending information, a message or signaling and storing information. When the communications apparatus shown in the third aspect is implemented using a hardware component, the communications apparatus may include a processor configured to perform the steps carried out by the terminal in any of the first aspects and / or the possible designs of the first aspect. The communications apparatus may also include memory. The memory may be configured to store instructions, and the processor may be configured to invoke the instructions. CRQRZn / ZZÜZ / 3 / YILI from memory and execute the instructions, to perform the steps carried out by the terminal in any of the first aspects and / or the possible designs of the first aspect. The communications apparatus may also include a transceiver (or so-called communications interface), configured to support the communications apparatus in carrying out the communication. For example, the transceiver can be configured to perform a sending action and / or a receiving action performed by the terminal in any of the first aspects and / or the possible designs of the first aspect, for example, an action of sending information, a message, or signaling by the terminal to the network device, or an action of receiving information, a message, or signaling from the network device and / or the processor can be configured to perform a processing action performed by the terminal in any of the first aspect and / or the possible designs of the first aspect, for example, controlling the transceiver to receive and / or send information, a message, or signaling and controlling the memory to store information. For example, if the communications device is a chip or a system of chips, the communications interface may be a component such as an input / output circuit, and the processor may be a logic circuit or a logic unit. According to a fourth aspect, an implementation of this request provides a communications device. The communications device can be configured to perform the steps carried out by the network device in any of the second aspect or possible designs of the second aspect. The communications device can implement the function, step, or operation of the above method using a hardware structure, a software module, or a combination of a hardware structure and a software module. For example, a functional module corresponding to the function, step, or operation of the above method can be arranged in the communications device to help the communications device perform the method. When the communications device shown in the fourth aspect is implemented using a software module, the device may include a communications module and a processing module coupled together. The communications module may be configured to support the communications device in carrying out communication. The processing module may be used by the communications device to perform a processing operation, for example, generating information / a message that needs to be sent, or processing a received signal to obtain information / a message. For example, the communications module can be configured to perform a send action and / or a receive action performed by the network device in either CRQRZn / ZZÜZ / 3 / YILI of the second aspect and / or possible designs of the second aspect, for example, an action of sending information, a message or signaling by the network device to the terminal, or an action of receiving information, a message or signaling from the terminal and / or the processing module can be configured to perform a processing action performed by the network device in any of the second aspect and / or possible designs of the second aspect, for example, controlling the communications module to perform operations such as receiving and / or sending information, a message or signaling and storing information. When the communications apparatus shown in the fourth aspect is implemented using a hardware component, the communications apparatus may include a processor configured to perform the steps carried out by the network device in either of the second aspect and / or the possible designs of the second aspect. The communications apparatus may also include memory. The memory may be configured to store instructions, and the processor may be configured to: invoke instructions from memory and execute instructions, to perform the steps carried out by the network device in either of the two aspects and / or the possible designs of the second aspect. The communications apparatus may also include a transceiver (or so-called communications interface), configured to support the communications apparatus in carrying out the communication. For example, the transceiver can be configured to perform a sending action and / or a receiving action performed by the network device in any of the second aspects and / or the possible designs of the second aspect, for example, an action of sending information, a message or signaling by the network device to the terminal, or an action of receiving information, a message or signaling from the terminal and / or the processor can be configured to perform a processing action performed by the network device in any of the second aspect and / or the possible designs of the second aspect, for example, controlling the transceiver to receive and / or send information, a message or signaling and controlling the memory to store information. For example, if the communications device is a chip or a system of chips, the communications interface may be a component such as an input / output circuit, and the processor may be a logic circuit or a logic unit. According to a fifth aspect, this application provides a communications system. The communications system may include the communications apparatus in the third aspect and the communications apparatus in the fourth aspect. The communications apparatus of the third aspect may include a software module and / or a hardware component. The apparatus of CRQRZn / ZZnZ / 3 / YILI communications of the fourth aspect may include a software module and / or a hardware component. According to a sixth aspect, this application provides a computer-readable storage medium. The computer-readable storage medium stores instructions (or programs), and when the instructions are invoked and executed on a computer, the computer is enabled to perform the method in any of the first aspects or the possible designs of the first aspects, or the method in any of the second aspect or the possible designs of the second aspect. According to a seventh aspect, this application provides a computer program product. The computer program product may include instructions, and when the computer program product is executed on a computer, the computer is enabled to perform the method in any of the first aspects or the possible designs of the first aspect, or the method in any of the second aspect or the possible designs of the second aspect. According to an eighth aspect, this application provides a chip and / or a chip system that includes a chip. The chip may include a processor. The chip may further include a memory (or storage module) and / or a transceiver (or communications module). The chip may be configured to implement the method in any of the first aspect or the possible designs of the first aspect, or the method in any of the second aspect or the possible designs of the second aspect. The chip system may include the chip, or it may include the chip and another discrete component, such as a memory (or storage module) and / or a transceiver (or communications module). For the beneficial effects of the second to eighth aspect and the possible designs of the second to eighth aspect, refer to the descriptions of the beneficial effects of the method according to either of the first aspect and the possible designs of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic diagram of a wireless communications system architecture according to one implementation of this application. Figure 2 is a schematic diagram of a wireless communications system architecture according to one implementation of this application. Figure 3 is a schematic diagram of a communication method according to one implementation of this request. Figure 4 is a schematic diagram of a communication method according to one implementation of this request. Figure 5 is a schematic diagram of a method for determining an interval CRQRZn / ZZnZ / 3 / YILI according to a realization of this request. Figure 6 is a schematic diagram of another method for determining an interval according to an implementation of this request. Figure 7 is a schematic diagram of a communications apparatus structure according to one embodiment of this application. Figure 8 is a schematic diagram of a structure of another communications apparatus according to one implementation of this application. Figure 9 is a schematic diagram of a structure of another communications apparatus according to one implementation of this application. Figure 10 is a schematic diagram of a structure of another communications apparatus according to one embodiment of this application. DETAILED DESCRIPTION OF THE INVENTION As shown in Figure 1, a communication method provided in an embodiment of this application can be applied to a wireless communication system 100. The wireless communication system may include a terminal 101 and a network device 102. The network device 102 may include a plurality of transmit / receive points. The network device 102 implements coordinated transmission of a plurality of PDCCHs using the plurality of transmit / receive points. The PDCCH may be used to carry the DCL Optionally, terminal 101 is configured to support carrier aggregation and terminal 101 can be connected to a plurality of carrier components (carrier components) of network device 102. It should be understood that the 100 wireless communications system can be applied to both a low frequency scenario (below 6G) and a high frequency scenario (above 6G).An application scenario for the Wireless Communications System 100 includes, among others, a long-term evolution (LTE) system, a frequency division duplex (FDD) LTE system, a time division duplex (TDD) LTE system, a universal mobile telecommunication system (UMTS), a worldwide interoperability for microwave access (WiMAX) communications system, a cloud radio access network (GRAN) system, a future fifth-generation system, a new radio (NR) communications system, or a future evolved public land mobile network (PLMN) system. Terminal 101 can be a user equipment (UE), a terminal, an access terminal, a terminal unit, a terminal station, a station CRQRZn / ZZnZ / 3 / YILI mobile (mobile station, MS), a remote station, a remote terminal, a mobile terminal, a wireless communications device, a terminal agent, a terminal device, or the like. Terminal 101 may have a wireless transceiver function. Terminal 101 may communicate (e.g., wirelessly) with one or more network devices in one or more communications systems and receive a network service provided by the network device. The network device referred to herein includes, but is not limited to, the network device 102 shown in the Figure. Terminal 101 can be a cell phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device having a wireless communication function, a computing device, another processing device connected to a wireless modem, a vehicle-mounted device, a portable device, a terminal device in a future 5G network, a terminal device in a future evolved PLMN, or similar. Optionally, Terminal 101 can be deployed on land, including as an indoor or outdoor unit, or as a portable or vehicle-mounted device. Alternatively, Terminal 101 can be deployed on water (e.g., on a ship). Alternatively, Terminal 101 can be deployed in the air (e.g., on an aircraft, balloon, or satellite).Terminal 101 can be a mobile phone, a tablet (iPad), a computer with wireless transceiver functionality, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal for industrial control, a wireless terminal for self-driving vehicles, a wireless terminal for remote medical care, a wireless terminal in a smart grid, a wireless terminal for transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, or similar devices. Terminal 101 can also be a communications chip that includes a communications module. Network device 102 can be an access network device (or access network station). An access network device is a device that provides network access functionality, for example, a radio access network (RAN) base station. Network device 102 may specifically include a base station (BS) or include a base station, a radio resource management device configured to control the base station, and similar components. CRQRZn / ZZnZ / 3 / YILI 102 may alternatively include a repeater station (repeater device), an access point, a base station in a future 5G network, a base station in a future evolved PLMN network, an NR base station, or similar. The network device 102 may be a handheld device or a vehicle-mounted device. Alternatively, the network device 102 may be a communications chip that includes a communications module. For example, the 102 network device includes, among others, a next-generation Node B (g node B, gNB) in 5G, an evolved node B (eNB) or a radio network controller (RNC) in an LTE system, a Node B (NB) in a WCDMA system, a radio controller or a base station controller (BSC) in a GRAN system, a base transceiver station (BTS), a home evolved node B (e.g., home node B, HNB), a baseband unit (BBU), a transmitting and receiving point (TRP), a transmitting point (TP), or a mobile switching center in a GSM system or a CDMA system. The plurality of transmit / receive points of network device 102 can essentially be a group of physical antennas. As shown in Figure 2, one architecture of network device 102 might consist of a baseband processing unit located in one geographic location, and this baseband processing unit is connected to the plurality of transmit / receive points in a plurality of geographic locations. Each transmit / receive point might include a radio frequency processing unit and an antenna. For example, as shown in Figure 2, there might be a radio frequency processing unit and an antenna array at the geographic location of each of the plurality of transmit / receive points. The baseband processing unit might be connected to the radio frequency processing unit at the transmit / receive point via an optical fiber. Based on the architecture shown in Figure 2, when coordinated transmission of a plurality of PDCCHs is implemented using the plurality of transmit / receive points, the baseband processing unit can be configured to: process a baseband signal (e.g., generate a signal to transmit the PDCCHs) and transmit the baseband signal to the radio frequency processing units of the plurality of transmit / receive points, and the plurality of transmit / receive points respectively send the PDCCHs through antennas. Optionally, this implementation of the request can also be applied to a scenario where multiple TRPs belong to different network devices. For example, the multiple TRPs belong to different stations, there is a relatively long latency for data exchange between the multiple stations, and there is limited capacity. The multiple PDCCHs are generated by baseband processing units of the network devices and sent by these transmit / receive points. In other words, the multiple network devices can schedule data relatively independently in the case of limited interaction. An implementation of this request provides a method of communication, such that in a multi-transmit / receive point transmission scenario, when a number of times a PDCCH is blindly detected and configured by a network device 102 for a terminal 101 in a cell corresponding to a transmit / receive point in each interval, exceeds a maximum number of times that is blindly detected by the PDCCH and that is compatible with the terminal 101 in each interval, the terminal 101 can be prevented from blindly detecting the PDCCH in an overload state. In this application, a maximum number of times that terminal 101 blindly detects the PDCCH in a single cell in each slot in a mode in which a single cell can be used as the maximum number of times that the PDCCH blindly detects and that is compatible with terminal 101 in each slot. For ease of description, the maximum number of times the PDCCH in the cell is blindly detected and compatible with terminal 101 in each slot in single-cell mode may be referred to as a first quantity. Alternatively, a first quantity (or referred to as a cell-corresponding first quantity) in this application is the maximum number of candidate PDCCH locations for terminal 101 in the cell in each slot in single-cell transmission mode. Single-cell transmission mode means that carrier aggregation is not configured for terminal 101, and terminal 101 operates only on a cell-corresponding carrier component. For example, in this request, a value for the first quantity can be determined using a parameter set from a server cell of terminal 101 in single-cell mode (i.e., the first quantity corresponds to the parameter set of the server cell). In this request, a value from the server cell's parameter set can be represented as A, where Z7e{0, 1, 2, 3}. When A is 0, it indicates that the spacing between subcarriers of the server cell is 15 kilohertz (kHz); when A is 1, it indicates that the spacing between subcarriers of the server cell is 30 kHz; when A is 2, it indicates that the spacing between subcarriers of the server cell is 60 kHz; and when A is 3, it indicates that the spacing between subcarriers of the server cell is 120 kHz. CRQRZn / ZZÜZ / 3 / YILI CRQRZn / ZZnZ / 3 / YILI subcarrier separation is a separation between adjacent subcarriers in an orthogonal frequency division multiplexing system (orthogonal frequency division multiplexing, OFDM). For example, there may be a correspondence, shown in Table 1, between the value of the server cell's parameter set and the value of the first quantity. Table 1 μ max, slot, μ 1V1 PDCCH 0 44 1 36 2 22 3 20 For example, as shown in Table 1, when μ the server cell is 0, the number of times the UE blindly detects the PDCCH in the server cell in each slot does not exceed 44. That is, when A is 0, the value of the first quantity is 44. In implementing this request, when programming terminal 101, network device 102 can configure a PDCCH-related parameter, for example, a CORESET and a search space set (SS set), for terminal 101. The CORESET defines a possibility for detecting the PDCCH in the frequency domain. Network device 102 can configure information such as a CORESET identifier, a demodulation reference signal (DMRS), the PDCCH encryption ID, a frequency domain precoding granularity, a symbol length, a frequency domain location, a mapping method between a CCE and a resource element group (REG), a quasi-colocation assumption for receiving the PDCCH, and information indicating whether DCI in a PDCCH received on this CORESET includes a transmission configuration indication (TCI) for terminal 101. A search separation defines a possibility of detecting the PDCCH in the time domain. The 102 network device can be configured with a search separation identifier, an identifier of a CORESET associated with the search separation, a time unit period and time unit offset for detecting the PDCCH, a time domain detection pattern (pattern), a number (which can include 0) of possible PDCCH candidates for each aggregation level, and a search separation type (indicating whether the search separation is a separation of CRQRZn / ZZnZ / 3 / YILI common search or a UE-specific search separation, where a common search separation means that another user can detect the search separation), a DCI format-related setting (e.g., a DCI format possibility to be detected) and a consecutive length for terminal 101. The time-domain detection pattern is used to indicate a symbol location where the UE can detect the PDCCH in a slot. For example, the time-domain detection pattern can indicate one or more symbol locations. These symbol locations correspond to the first symbol locations where potential PDCCHs begin. For example, the time-domain detection pattern might indicate symbol positions 11, I2, and I3. In this case, terminal 101 can detect the PDCCH at each of the locations whose starting symbols are 11, I2, and I3. The number (the number may include 0) of possible PDCCH candidates for each aggregation level is a number of possible PDCCH candidates corresponding to a different aggregation level 1, 2, 4, 8 or 16 and that can configure network device 102 for terminal 101 in a search separation. The consecutive length is the duration of the search gap in time units in the time domain. One slot is used as an example. For instance, if network device 102 configures a period k for terminal 101 and the duration is d, it means that starting from an interval that meets the period and offset of the search gap, the PDCCH can be detected at the search gap in d consecutive slots. CCE and Aggregation Level: A basic component unit of the PDCCH is the control channel element (CCE). A PDCCH occupies one or more CCEs. A greater number of occupied CCEs indicates higher PDCCH reliability and greater resource consumption. When a user-specific PDCCH occupies a portion of the CCEs, another user's PDCCH typically does not. In other words, a limited total amount of resources can support a limited total number of scheduled PDCCHs. The CCE can include six REGs. A REG resource includes a resource block (RB) in the frequency domain and an orthogonal frequency-division multiplexing (OFDM) symbol in the time domain. A mapping relationship exists between a CCE and a REG. That is, for example, a plurality of REGs, each containing a plurality of RBs and a plurality of symbols, are mapped to the CCE based on certain mapping relationships. This mapping can be direct (e.g., six consecutive REGs form a CCE), interleaved (the REGs are interleaved and then mapped to the CCE), or similar. The number of CCEs that form a PDCCH is called the aggregation level of CRQRZn / ZZnZ / 3 / YILI CCE. A user can detect the possibility of multiple aggregation levels, for example, 1, 2, 4, 8, or 16. Within a specific resource range, terminal 101 detects the PDCCH using a possible aggregation level. For example, terminal 101 attempts to detect, using aggregation level 4 and based on a rule, whether the PDCCH exists in a resource that includes four CCEs and whether the PDCCH can be successfully demodulated. Terminal 101 can attempt to detect using a different aggregation level. Terminal 101 can configure a possible aggregation level candidate for itself. As shown in Figure 3, a communication method provided in an implementation of this request may include the following steps. S101. A network device 102 sends the first configuration information to a terminal 101, wherein the first configuration information is used to indicate a configured number of candidate PDCCH locations in a time unit corresponding to a first CORESET group. The configured quantity is greater than a first quantity, and the first quantity is a preset maximum number of candidate PDCCH locations in a time unit (e.g., a slot) corresponding to a CORESET group in a target cell. A value for the first quantity can be determined by referring to Table 1. A PDCCH can be used to carry control information (e.g., downlink control information) to be sent by network device 102 to terminal 101. The first CORESET group is one of a plurality of CORESET groups in the target cell, and each CORESET group corresponds to a TRP. It should be understood that the configured quantity can be indicated directly, indirectly, explicitly, or implicitly in the initial configuration information. This is not specifically limited in this application. For example, one way to indicate the configured quantity of PDCCH candidate locations in the initial configuration information could be to configure a PDCCH-related parameter, such as a CORESET and SS set. For a specific method, refer to the description related to configuring the PDCCH-related parameter for network device 102 for terminal 101 in this application. The target cell can be one of a plurality of cells in which terminal 101 functions during carrier aggregation. Accordingly, terminal 101 receives the configured number of PDCCH candidate locations in the first CORESET group. S102. When the configured quantity is greater than the first quantity, terminal 101 detects a PDCCH in candidate PDCCH locations whose quantity is less than or equal to the first quantity, or when the configured quantity is less than or equal to the first CRQRZn / ZZnZ / 3 / YILI quantity, terminal 101 detects a PDCCH in candidate PDCCH locations whose quantity is less than or equal to the configured quantity. The first quantity is the pre-set maximum number of candidate PDCCH locations in the time unit corresponding to the CORESET group in the target cell, and the first CORESET group is one of the plurality of CORESET groups in the target cell. According to the method, terminal 101 can perform, based on the initial configuration information, a maximum of the first number of times, blind detection of candidate PDCCH locations configured by network device 102 for the first CORESET group. Compared to a solution in conventional technology, where terminal 101 blindly detects the PDCCH for all CORESETs in the target cell a maximum of the first number of times, programming flexibility can be improved. The scenario shown in Figure 2 is used as an example. When network device 102 performs a coordinated DCI transmission to terminal 101 using TRP #1 and TRP #2, terminal 101 blindly detects the PDCCH in a plurality of CORESET groups corresponding to each of TRP #1 and TRP #2. The plurality of CORESET groups corresponds to the target cell. Network device 102 can send the configured number of candidate PDCCH locations in the first CORESET group to terminal 101. The first CORESET group is a CORESET corresponding to TRP #1. When the configured number of candidate PDCCH locations in the first CORESET group is greater than the initial number, terminal 101 blindly detects the PDCCH in only some of the candidate PDCCH locations in the first CORESET group.Specifically, terminal 101 discards, based on a priority criterion (for example, a preconfigured criterion or a criterion defined in a protocol), some candidates in the PDCCH candidate locations, in the first CORESET group, configured by network device 102, so that an actual number of PDCCH candidate locations in which terminal 101 performs detection in the first CORESET group does not exceed the first number corresponding to the target cell. The priority criterion includes but is not limited to the following: If there is the same CCE, the same randomization code, the same DCI format and the same DCI size (number of bits) for a candidate mSl,ncl for a set SS s ¡ and a CORSET P and another candidate in a cell nc,, one candidate is discarded based on a rule related to the subscript that s¡ <Sj y P . Es decir, se descarta un candidato que cumpla la condición, es decir, un candidato que esté en un conjunto de separaciones de búsqueda con un número mayor y que esté con un número de candidato mayor. Que se descarte un CRQRZn / ZZnZ / 3 / YILI candidate means that the UE does not perform any detection on the candidate and this candidate is not counted in a number of candidate locations for detection. In this application, the priority criterion can be implemented using pseudocode. Therefore, according to the method, there may be a limitation that when a plurality of TRPs perform a coordinated transmission in a cell, a configured number of candidate PDCCH locations in a CORESET associated with a single TRP may exceed a first number corresponding to the cell, and when the PDCCH is blindly detected in the CORESET associated with the TRP, the actual number of times that terminal 101 performs the blind detection does not exceed the first number, to prevent the UE from blindly detecting the PDCCH in an overloaded state. Specifically, when performing S101, network device 102 can send a configured number of candidate PDCCH locations in each CORESET within the first CORESET group to terminal 101. Terminal 101 can then determine the time-frequency locations of the candidate PDCCH locations in each CORESET based on the configured number of candidate PDCCH locations in each CORESET, enabling it to blindly discover the PDCCH based on these time-frequency locations. Therefore, terminal 101 can determine the time-frequency locations of the candidate PDCCH locations in each CORESET within the first CORESET group based on the configured number of candidate PDCCH locations in each CORESET within the first CORESET group. By performing S102, terminal 101 can determine some candidate locations in all candidate PDCCH locations in the first CORESET group and blindly detect the PDCCH based on time frequency locations of some candidate locations. Optionally, network device 102 can send the first information to terminal 101, where the first information can be used to indicate the first CORESET group, thus preventing terminal 101 from blindly detecting the PDCCH in the first CORESET group in the overloaded state. The first CORESET group corresponds to the target cell. For example, the first information can include an identifier for each CORESET in the first CORESET group, such as a CORESET index. Optionally, one or more CORESETs corresponding to a cell can be considered the first CORESET group by default. For example, a primary cell (master cell) serving terminal 101 is used as the target cell, and one or more CORESETs corresponding to the primary cell are the first CORESET group. Optionally, if a quantity of a plurality of TRPs is 2, in all the CRQRZn / ZZnZ / 3 / YILI CORESET, when the network device configures a parameter, for example, a higher layer index, in some CORESETs and does not configure the parameter in other CORESETs, it can be determined that some CORESETs that include the parameter are one CORESET group and the CORESET group corresponds to one TRP, and it is determined that the other CORESETs that do not include the parameter are another CORESET group and the other CORESET group corresponds to another TRP. For example, a CORESET is a CORESET in the first CORESET group as long as the upper-layer index is configured on the CORESET. For example, network device 102 has three CORESETs: the upper-layer index is configured on CORESET 1 and CORESET 2, and no upper-layer index is configured on CORESET 3. In this case, CORESET 1 and CORESET 2 belong to the first CORESET group. Optionally, the first CORESET group can be determined as follows: A CORESET is a CORESET in the first CORESET group whenever a value of a higher-layer index (i.e., the first piece of information, which may be another parameter) configured in the CORESET is a specific value. The specific value can be 0, 1, another value, or similar. The value can be indicated by the network device 102, defined in a protocol, or pre-configured. For example, network device 102 configures three CORESETs. In CORESET 1 and CORESET 2, an upper layer index of 0 is configured, and in CORESET 3, an upper layer index of 1 is configured. In this case, if the specific value is 1, it can be determined that CORESET 3 belongs to the first CORESET group. Optionally, the specified value can be the maximum (or minimum) value of upper-layer index values ​​across a plurality of CORESETs in the current cell. For example, network device 102 configures three CORESETs. CORESET 1 and CORESET 2 have an upper-layer index set to 0, and CORESET 3 has an upper-layer index set to 1. In this case, if the specified value is the maximum of the upper-layer index values ​​across the plurality of CORESETs, CORESET 3 can be determined to belong to the first CORESET group. If the specified value is the minimum of the upper-layer index values ​​across the plurality of CORESETs, CORESET 1 and CORESET 2 can be determined to belong to the first CORESET group. The specific value can be indicated by network device 102 to terminal 101. For example, network device 102 can notify terminal 101 that a CORESET is a CORESET in the first CORESET group whenever a parameter configured in the CORESET is a specific value parameter. CRQRZn / ZZnZ / 3 / YILI Optionally, network device 102 can notify terminal 101 that a CORESET in which a specific parameter is configured is a CORESET in the first CORESET group, or network device 102 can notify terminal 101 that a CORESET in which a specific parameter is not configured is a CORESET in the first CORESET group. The methods described above for determining the first CORESET group can be combined. For example, when a CORESET has a specific upper-layer index configured with a particular value, or when no upper-layer index is configured, the UE can determine that the CORESET belongs to the first CORESET group. For instance, network device 102 configures three CORESETs. One CORESET has a higher-layer index of 0, CORESET 2 has a higher-layer index of 1, and CORESET 3 has no upper-layer index. If the specific value is 1, CORESET 2 and CORESET 3 can be determined to belong to the first CORESET group. If the specific value is 0, CORESET 1 and CORESET 3 can be determined to belong to the first CORESET group. Optionally, the first CORESET group can be configured for the primary cell of terminal 101. That is, the pseudocode used to determine a number of PDCCH candidates is applicable only to the PDCCH candidates in specific CORESETs (i.e., the first CORESET group) configured in the primary cell. The specific CORESETs are some of a plurality of CORESETs included in the primary cell. Optionally, the pseudocode used to determine a number of PDCCH candidates is applicable only to PDCCH candidates in specific CORESETs, with a larger top-layer index, set in the parent cell (The UE assigns PDCCH candidates for monitoring to sets of USS for candidates in CORESETs with the highest top-layer index value in the parent cell that has an active DL BWP with SCS P setting in the Π slot according to the following pseudocode). Alternatively, the pseudocode used to determine a number of PDCCH candidates is applicable only to PDCCH candidates in specific CORESETs, with a smaller higher layer index, set in the primary cell (The UE assigns PDCCH candidates for monitoring to USS sets for candidates in CORESETs with the lowest upper layer index value in the primary cell that has an active DL BWP with SCS A setting in slot n according to the following pseudocode). Alternatively, the pseudocode used to determine a number of PDCCH candidates is applicable only to PDCCH candidates in specific CORESETs, with a smaller higher layer index or no higher layer index. CRQRZn / ZZnZ / 3 / YILI configured in the primary cell (The UE assigns PDCCH candidates for monitoring to USS sets for candidates in CORESETs with smaller top-layer index value or no top-layer index configured in the primary cell that has an active DL BWP with SCS R configuration in slot n according to the following pseudocode). Alternatively, the pseudocode used to determine a number of PDCCH candidates is applicable only to PDCCH candidates in specific CORESETs, with a larger top-layer index or no top-layer index, set in the parent cell (The UE assigns PDCCH candidates to monitor to USS sets for candidates in CORESETs with a higher layer index value or no higher layer index set in the parent cell that has an active DL BWP with SCS A setting in slot n according to the following pseudocode). In this implementation of this request, when terminal 101 is configured to support carrier aggregation or when terminal 101 performs a coordinated transmission with a plurality of TRPs (the plurality of TRPs corresponds to one or more cells), terminal 101 can determine a maximum number of candidate PDCCH locations in each cell in each slot. Based on a PDCCH blind detection capability, terminal 101 can determine a maximum number of candidate PDCCH locations in one or more cells where terminal 101 operates in each slot (i.e., determine a maximum number of times terminal 101 blindly detects the PDCCH in one or more cells in each slot). The blind detection capability of the PDCCH of terminal 101 is related to a number of cells in which terminal 101 works and a number of coordinated cells in the cell in which terminal 101 works.A coordinated cell means that a plurality of TRPs perform a coordinated transmission with terminal 101 in the cell. In this application, a coordinated cell may also be referred to as a multi-TRP cell. A non-coordinated cell may also be referred to as a single-TRP cell. For example, a blind detection capability value for the PDCCH of terminal 101 is a number of transmit / receive points corresponding to the plurality of cells. Alternatively, a blind detection capability value for the PDCCH of terminal 101 is my 1 <m<16. En otras palabras, m es menor que 16 y mayor o igual que 1. Terminal 101 can send a second piece of information to network device 102, and the second piece of information can be used to indicate the value of the PDCCH blind detection capability. The following specifically describes, based on different communication scenarios, ways to determine the blind detection capability of the PDCCH of the CRQRZn / ZZnZ / 3 / ΥΙΛΙ terminal 101. Scenario 1: Terminal 101 operates in a server cell and performs a coordinated transmission with N1 TRPs in the cell. Therefore, the number of CORESET groups in the cell is N1, where N1 is a positive integer greater than 1. In this scenario, the blind detection capability of PDCCH terminal 101 is equal to a plurality of TRPs (or the number of CORESET groups in the cell where terminal 101 operates). That is, the value of the blind detection capability of PDCCH is N1, where N1 is a positive integer greater than 1. For example, in this scenario, the maximum number of times terminal 101 blindly detects the PDCCH in the server cell in each slot is equal to the first quantity*N1. The first quantity can be determined by consulting Table 1 based on a value from a set of server cell parameters. Furthermore, the maximum number of times terminal 101 blindly detects the PDCCH in the server cell within each interval can be limited to the first quantity * 4. This can be represented as follows: The maximum number of times is the minimum value between the first quantity * 4 and the first quantity * N1. That is, a maximum value of N1 is 4. Alternatively, the maximum number of times is the first quantity * the blind detection capability of the PDCCH of terminal 101. This can be represented as follows: The maximum number of times is a minimum value between the first quantity * the blind detection capability of the PDCCH of terminal 101 and the first quantity * N1. That is, a maximum value of N1 is the blind detection capability of the PDCCH of terminal 101. Optionally, the value can be determined based on a capacity of terminal 101. For example, terminal 101 can report one or more multi-TRP coordination capabilities (or multi-TRP coordination capability parameters) N2 supported by terminal 101 to network device 102, where N2 can be an integer or a non-integer number. A value of N2 can be greater than or equal to 1, and a maximum value of N2 is a number (which is a constant) of transmit / receive points for coordinated transmission, for example, 2 (which can be another value). Furthermore, N2 can be configured as follows: 1 <N2<2. Cabe señalar que la terminal 101 puede informar N2 al dispositivo de red 102 indicando directa, indirecta, explícita o implícitamente N2 o utilizando otros medios, siempre que la capacidad de la terminal 101 pueda notificarse al dispositivo de red 102. Una implementación no está limitada en esta solicitud. A value for each N2 multi-TRP coordination capability can be one of the CRQRZn / ZZÜZ / 3 / YILI candidate N2 values. There can be one or more candidate N2 values. The same candidate N2 value is configured for terminal 101 and network device 102. The plurality of candidate N2 values ​​can be discrete values. Optionally, the value of N2 can be less than or equal to the value of N1. Terminal 101 can report one or more N2 capabilities supported by Terminal 101. When Terminal 101 reports one or more multi-TRP N2 coordination capabilities, the A^X that Network Device 102 can configure can be one or more of those multi-TRP N2 coordination capabilities reported by Terminal 101. Alternatively, support can be implemented with a smaller value for N2 reported by Terminal 101. For example, the candidate N2 values ​​are 1, 1.5, 2, 2.5, ... and if the N2 value reported by Terminal 101 is 2, Network Device 102 can select the candidate N2 values ​​1, 1.5, and 2 that are less than or equal to (or less than) 2 and that are within the candidate N2 values. That is, when terminal 101 supports only one server cell, the value of TV^ is N2 reported by terminal 101 or a value that is less than or equal to N2 and that is set by a base station. After terminal 101 reports N2, if network device 102 can select a value from a plurality of values ​​(for example, terminal 101 reports a plurality of multi-TRP N2 coordination capabilities, or terminal 101 reports N2 representing a maximum supported capacity and compatibility with a smaller value can be implemented across a range of candidate N2 values), network device 102 selects a value from the plurality of values ​​and reports the value to terminal 101. In this way, terminal 101 can learn the selected value. Specifically, the value of Aj^ can be indicated to terminal 101 based on a PDCCH configuration indication, for example, a PDCCH upper-layer index. Alternatively, the value can be indicated to terminal 101 based on a number of configured cell identifiers, i.e., indicated using a number of server cell identifiers or physical cell identifiers configured or used in a cell. Alternatively, the value of Aj^ can be indicated by using signaling (i.e., second information) sent by network device 102 to terminal 101. The signaling can be at least one radio resource control (RRC) signal, an access control element, or a media control element. CRQRZn / ZZnZ / 3 / ΥΙΛΙ (medium access control-control element, MAC-CE), or DCL Scenario 2: Terminal 101 operates in a plurality of cells by carrier aggregation. In this scenario, when the total number of a plurality of cells (including one coordinated cell and one non-coordinated cell) configured by network device 102 is less than 4, -V^ of I® terminal 101 is equal to the total number of a plurality of cells. In this case, the UE may not report the value of . When the total number of cells configured by network device 102 is greater than 4, the value of `jV^` can be determined by terminal 101, and terminal 101 can report the value of `jV^` to network device 102. Alternatively, the value of `jV^` can be equal to the number of CORESET groups in the cells. In this case, terminal 101 does not report the value, and network device 102 can default to using `jV^` to terminal 101 as equal to the total number of cells. Optionally, terminal 101 can also determine, using the following method, to report the value of N^out to network device 102: A multi-TRP coordination capability can be reported at a UE granularity, a frequency band combination granularity, or a frequency band granularity. Reporting a multi-TRP coordination capability at a UE granularity means that Terminal 101 reports only one value without distinguishing between frequency bands. Therefore, there is no limit to the frequency band range to which the value applies. In method 1, reporting the value of TV^ is determined based on a number of carriers backed by terminal 101 and a value of the multi-TRP N2 coordination capability supported by terminal 101. The number of carriers supported by terminal 101 is the number of carriers supported by terminal 101 for simultaneous access. For example, the number of carriers supported by terminal 101 could be the total number of carriers across a plurality of cells configured by network device 102. When the number of carriers supported by terminal 101 is greater than a ratio of 4 to the N2 multi-TRP coordination capacity (or a maximum value in values ​​of one or more N2 multi-TRP coordination capacities reported by terminal 101) CRQRZn / ZZnZ / 3 / YILI supported by terminal 101, terminal 101 needs to report the value of That is, when the multi-TRP coordination capability supported by terminal 101 is N2 and terminal 101 supports at least (4 / N2) carriers, terminal 101 needs to report the value of 1' cells' For example, an N2 value can be 1 or 2. When the N2 value reported by terminal 101 is 2 and terminal 101 supports at least two CCs, terminal 101 needs to report the value of [missing value]. For another example, the N2 value can be 1 or 2 and terminal 101 can report on a plurality of multi-TRP coordination N2 capabilities. When the values ​​of two multi-TRP coordination N2 capabilities reported by terminal 101 are 1 and 2 respectively, and terminal 101 supports at least two CCs, terminal 101 needs to report the value of [missing value]. That is, according to method 1, when terminal 101 supports carrier aggregation, when terminal 101 reports the value of the blind sensing capability of PDCCH TV^ of terminal 101, the value of the blind sensing capability Λ / ^ of terminal 101 is a value reported by terminal 101. When the UE does not report, the value of the blind sensing capability Λ / ^ of PDCCH of terminal 101 is a value obtained by performing the sum of a number of uncoordinated cells and a product of a number of coordinated cells and N2. The value of N2 is reported by terminal 101. The value can be expressed in the following formula: M1*N2+M2, where M1 is the number of coordinated cells and M2 is the number of non-coordinated cells. Furthermore, terminal 101 reports capacity here. Therefore, the number of coordinated cells and the number of non-coordinated cells in this document are, respectively, the number of cells for which a plurality of CORESET groups can be configured and the number of cells for which a plurality of CORESET groups cannot be configured (they are not supported). In method 2, reporting the value of TV^ is determined based on a number of carriers backed by terminal 101 and information indicating whether terminal 101 supports a multi-point transmit / receive coordination capability. The information indicating whether terminal 101 supports multiple receive / transmit point coordination can be used to determine if terminal 101 supports multiple receive / transmit point coordination. When terminal 101 supports multiple receive / transmit point coordination, the N2 coordination capability CRQRZn / ZZnZ / 3 / YILI The multiple TRP supported by terminal 101 is a fixed value (for example, 2). Additionally, terminal 101 can report information indicating whether it supports multi-point transmit / receive coordination to network device 102. Thus, if the number of carriers supported by terminal 101 is greater than a ratio of 4 to the fixed value, terminal 101 needs to report the value of For example, when the fixed value is 2, if terminal 101 supports at least two (i.e., 4 / 2) operators, terminal 101 needs to report the value of · In a simplified application scenario, all cells include only one non-coordinated cell and / or one coordinated cell where there are two TRPs for coordinated transmission, and it is assumed that there are coordinated cells M1 and non-coordinated cells M2. That is, in method 2, when terminal 101 supports carrier aggregation, when terminal 101 reports the value of the PDCCH blind detection capability, the terminal 101 is a value reported by terminal 101. When the UE does not report / VcX, the blind detection / V^X capability value of the PDCCH of terminal 101 is a value obtained by adding the number of uncoordinated cells and a product of the number of coordinated cells and the fixed value. Furthermore, terminal 101 reports capacity here. Therefore, the number of coordinated cells and the number of non-coordinated cells in this document are, respectively, the number of cells for which a plurality of CORESET groups can be configured and the number of cells for which a plurality of CORESET groups cannot be configured (they are not supported). In method 3, reporting the value of / V^ensse is determined based on a multi-carrier aggregation capability of terminal 101 in each frequency band. The multi-carrier aggregation capability of terminal 101 in each frequency band is the product of the number of carriers supported by terminal 101 and its multi-TRP coordination capability (N3) in each frequency band. Terminal 101 can also report its multi-carrier aggregation capability in each frequency band to network device 102. An N3 value corresponds to a frequency band, and the frequency band here can be a combination of frequency bands or a single frequency band. N3 is greater than or equal to 1, and a maximum N3 value is a constant number of transmit / receive points for coordinated transmission, for example, 2 (which can be another value). One way to determine an N3 value corresponding to each band of CRQRZn / ZZnZ / 3 / YILI frequency, see how to determine the N2 value in this application. Configured by network device 102 is one or more multi-TRP N2 coordination capabilities reported by terminal 101. Alternatively, support can be implemented with a lower value for N2 reported by terminal 101. For example, the candidate N2 values ​​are 1, 1.5, 2, 2.5,... and if an N2 value reported by terminal 101 is 2, network device 102 can select the N2 value from among the candidate N2 values ​​1, 1.5, and 2 that are less than or equal to (or less than) 2 and are in the candidate N2 values. For example, when the total sum of multi-carrier aggregation capabilities supported by terminal 101 across a plurality of frequency bands is greater than 4, terminal 10 needs to report the value of Terminal 10 can also report a multi-TRP coordination capability in each of the frequency bands 1 to K. The multi-TRP coordination capability is denoted as N3i, where i = 1 - K, and i represents the frequency bands 1 to K. For example, the frequency bands backed by Terminal 101 include frequency bands 1 to K, and Terminal 10 can report blind-sensing capabilities N31 to N3K in frequency bands 1 to K. When Terminal 10 reports a plurality of N3 capabilities in a frequency band, a maximum capacity is calculated from the values ​​of the plurality of reported N3 capabilities in the frequency band. That is, based on method 3, when terminal 101 supports carrier aggregation, when terminal 101 reports the value of the blind detection capability of PDCCH N^ of terminal 101 is a value reported by terminal 101. When the UE does not report, the value of the blind detection capability W'^ of PDCCH of terminal 101 is a value obtained by performing a sum of quantities of uncoordinated cells in all frequency bands and a sum of products of quantities of coordinated cells in all frequency bands / combinations of frequency bands and capacities N3¡ reported by terminal 101 in all frequency bands / combinations of frequency bands. Alternatively, when terminal 101 reports the value of N^s, the value of terminal 101's PDCCH blind detection capability is a value reported by terminal 101. When the UE does not report N^s, the value of terminal 101's PDCCH blind detection capability is a value obtained by summing CRQRZn / ZZnZ / 3 / YILI quantities of uncoordinated cells in all frequency bands and products of quantities of coordinated cells and a function transformation result of N3i capacities reported by terminal 101 in all frequency bands / combinations of frequency bands. The function transformation result of the N3i capacities reported by terminal 101 in all frequency bands / combinations of frequency bands may be a maximum value, a minimum value, a mean value or similar of the N3i capacities reported by terminal 101 in all frequency bands / combinations of frequency bands. Furthermore, terminal 101 reports capacity here. Therefore, the number of coordinated cells and the number of non-coordinated cells in this document are, respectively, the number of cells for which a plurality of CORESET groups can be configured and the number of cells for which a plurality of CORESET groups cannot be configured (they are not supported). In method 4, reporting the value of is determined based on both the number of carriers and the coordination capacity supported by terminal 101 in each frequency band. For example, when terminal 101 operates in frequency bands 1 to K and a value (which can be denoted as N4 below) is determined based on both the number of carriers and the multi-TRP coordination capability N3 supported by terminal 101 in each frequency band is greater than 4, terminal 101 needs to report the value of Terminal 101 can provide information indicating whether it supports multi-point transmit / receive coordination in each frequency band. The frequency band here can be a combination of frequency bands or a single frequency band. For example, Terminal 101 can provide information indicating whether multi-point transmit / receive coordination is supported in each of frequency bands 1 through K. Multi-point transmit / receive coordination is indicated as Si, where i = 1 to K, and ei represents the frequency bands 1 through K. A value of Si is either 0 or 1. When terminal 101 supports the coordination of multiple transmit / receive points in a frequency band, the value of a multiple TRP N3 coordination capability of terminal 101 in the frequency band is a fixed value and may be indicated as A here. In this example, a value of N4 can be determined based on the following method: It is assumed that there are a number of carriers in each of the frequency bands from 1 to K CRQRZn / ZZnZ / 3 / YILI can be denoted as C¡, where i=1 to K. In this case, when Si is 0, N4 can be denoted as C¡. When Si is 1, N4 in the frequency band can be indicated as Ci*A. For example, A„p ces is a quantity of TRP in a cell c. The quantity of TRP can be equal to a quantity of CORESET groups. There can be one or more TRPs. In this example, the value of the blind detection capability of PDCCH of terminal 101 cmax can be Σ, specifically, a total sum of quantities of TRP in a plurality of <•=0 cells (i.e., a quantity of CORESET groups in the plurality of cells). That is, based on method 4, when terminal 101 supports carrier aggregation, when terminal 101 reports the value of A^s, the value of the blind detection capability of the PDCCH of terminal 101 is a value reported by terminal 101. When the UE does not report A^^, the value of the blind detection capability A^^ of the PDCCH of terminal 101 is a value obtained by performing a sum of quantities of uncoordinated cells in all frequencies, bands and a sum of products of quantities of coordinated cells in all frequency bands / combinations of frequency band and the fixed value. Furthermore, terminal 101 reports capacity here. Therefore, the number of coordinated cells and the number of non-coordinated cells in this document are, respectively, the number of cells for which a plurality of CORESET groups can be configured and the number of cells for which a plurality of CORESET groups cannot be configured (they are not supported). In a specific example, cell #1 corresponds to TRP #1 and TRP #2, and cell #2 corresponds to TRP #3. Each TRP #1 and TRP #2 corresponds to a CORESET group in cell #1, and TRP #3 corresponds to a CORESET group in cell #2. Therefore, the number of CORESET groups in cell #1 and cell #2 is 3. The number of CORESET groups in cell #1 is 2, and the number of CORESET groups in cell #2 is 1. When terminal 101 transmits using cell #1 and cell #2, the blind detection capability of PDCCH A^^ of terminal 101 can be 3. In a simplified application scenario, all cells include only one non-coordinated cell and / or one coordinated cell in which there are two TRPs for coordinated transmission, and it is assumed that there are coordinated cells M1 and non-coordinated cells M2. In this case, the value of the blind detection capability N^ of the PDCCH of terminal 101 can be M1*2+M2. For example, a value of a blind detection capability of terminal 101 in CRQRZn / ZZnZ / 3 / YILI each of a plurality of cells can be used to determine a maximum number of times the terminal 101 blindly detects the PDCCH in each of the plurality of cells in each slot. For example, when the parameter set values ​​of the plurality of cells are equal, the maximum number of times the terminal 101 blindly detects the PDCCH in each of the plurality of cells in each slot is equal to a value obtained by multiplying a first quantity corresponding to the parameter set value by . Optionally, if the parameter set values ​​of the plurality of cells are the same, the number of times terminal 101 blindly detects the PDCCH in a unit of time corresponding to each CORESET group in each cell is equal to that obtained and consulted in Table 1 based on the cell parameter set value. Furthermore, in this example, if the parameter set values ​​of the plurality of cells are the same, a maximum number of non-overlapping CCEs detected blindly by terminal 101 in the time unit corresponding to each CORESET group in each cell is equal to that obtained by consulting Table 1 as a function of the cell parameter set value. As shown in Table 2, it corresponds to the value of the parameter set for each cell. Table 2 μ z^max^lot, / / CPDCCH 0 56 1 56 2 48 3 32 Optionally, a third quantity can be determined based on the blind detection capability of the PDCCH at terminal 101, and a second quantity. The second quantity is a specified maximum number of candidate PDCCH locations per time unit corresponding to a CORESET group in a first cell. The third quantity is a specified maximum number of candidate PDCCH locations per time unit corresponding to the first cell. The first cell includes one or more cells that are in the cell plurality and whose parameter sets have the same CRQRZn / ZZnZ / 3 / YILI value. The number of times terminal 101 blindly detects the PDCCH in a time unit corresponding to each CORESET group in the first cell does not exceed the second and third amounts. Optionally, the number of times the terminal blindly detects the PDCCH in the time unit corresponding to the first cell does not exceed a product of the second quantity and a number of CORESET groups in the first cell. For example, the first cell is a cell found in the plurality of cells on which terminal 101 works and whose parameter set has a value of μ. In this case, the second quantity can be obtained and looked up in Table 1 based on μ. For example, if the parameter sets of at least two of the plurality of cells on which terminal 101 works have different values, the third quantity can be determined based on the following formula: kk total,slot.y.iV1PDCCH where ^pdccXre represents a maximum number of times that terminal 101 blindly detects the PDCCH in one or more cells c (namely, the first cell) whose numerology is μ in each slot, N^s represents the blind detection capability of the PDCCH of terminal 101, N^,μ'>ν is a quantity of TRP (namely, a quantity of CORESET cell groups in cell c) in cell c whose numerology is μ and represents a quantity J=0 c=0 total TRP (i.e., a number of CORESET groups in cells) in all cells. When the amount of TRP in each coordinate cell is equal to n1, the above formula can be converted as follows: M = Λ / χ 'M· ( N * ni + N / Σ( N1« / '· * «1 + N where ^Le^¡iitnrp represents a quantity of coordinated cells c whose numerology is μ , represents a quantity of non-coordinated cells c whose numerology is A > ^^iísmU / ~trP represents a number of coordinated cells in all cells and XX represents a number of uncoordinated cells in all cells. § > π NCNNCN <C 40 g o Furthermore, when all cells include only one non-coordinated cell (or a single TRP cell) and / or one coordinated cell (or a multiple TRP cell) in which there are two TRPs for coordinated transmission, i.e., when n1 is 2, the above formula can be converted as follows: M = NX · M ' ·( N2 / * 2 + N( N* 2 + NL It should be understood that the sum of a number of single TRP cells and a number of multiple TRP cells is a total of all cells configured by network device 102 for terminal 101. For example, the number of times terminal 101 blindly detects the PDCCH in a time unit corresponding to each CORESET in each cell configured by network device 102 cannot exceed M mJ™01, μni M. That is, the number of times terminal 101 performs blind detection in the time unit corresponding to each CORESET in each cell configured by network device 102 must not exceed . For example, n1 can be obtained based on the capacity of terminal 101. It should be understood that, specifically, n1 in the formula can be determined based on the capacity of terminal 101, or n1 is obtained based on the capacity of terminal 101. A description is provided below using an example where network device 102 determines n1. The same method can be used to determine n1. Specifically, terminal 101 can report one or more multi-TRP N2 coordination capabilities supported by terminal 101 to network device 102. N2 is greater than or equal to 1, and a maximum value of N2 is a constant number of transmit / receive points for coordinated transmission, for example, 2 (which can be another value). N2 can be a non-integer number. Optionally, N2 can be configured as follows: 1 <N2<2. Each multi-TRP N2 coordination capability value can be one of the candidate N2 values. There can be one or more candidate N2 values. The same candidate N2 value is configured for terminal 101 and network device 102. The plurality of candidate N2 values ​​can be discrete values. For example, the value of N2 can be less than or equal to the value of n1. Terminal 101 can report on one or more N2 capabilities supported by the CRQRZn / ZZÜZ / 3 / YILI terminal 101. When terminal 101 reports one or more multi-TRP N2 coordination capabilities, the network device 102 can be configured to use one or more of the multi-TRP N2 coordination capabilities reported by terminal 101. Alternatively, support can be implemented with a smaller value for N2 reported by terminal 101. For example, the candidate N2 values ​​are 1, 1.5, 2, 2.5, ... and if the N2 value reported by terminal 101 is 2, the network device 102 can select the candidate N2 values ​​1, 1.5, and 2 that are less than or equal to (or less than) 2 and that are within the candidate N2 values. After terminal 101 reports N2, if network device 102 can select a value from a plurality of values ​​(for example, terminal 101 reports a plurality of multi-TRP coordination capabilities N2, or terminal 101 reports N2 representing a maximum supported capacity and compatibility with a smaller value can be implemented across a range of candidate N2 values), network device 102 selects a value from the plurality of values ​​and reports the value to terminal 101. In this way, terminal 101 can learn the selected value as n1. Alternatively, network device 102 selects a value from the plurality of values ​​as n1 and reports the value to terminal 101. In this way, terminal 101 can learn the selected value as n1. Specifically, the value of ]y^L'P'trP can be obtained based on a PDCCH configuration, for example, based on a PDCCH upper-layer index. Alternatively, the value of jy^'PPP can be obtained based on a number of configured cell identifiers, i.e., using a number of server cell identifiers or physical cell identifiers configured or used in a cell. Alternatively, the value of N^,μ,πρ can be indicated by network device 102 to terminal 101. The signaling for the indication can be at least one of RRC, MAC CE, or DCI. Terminal 101 can report a value at a UE granularity, a frequency band combination granularity, or a frequency band granularity. When network device 102 indicates fj^PJrP on-| θ|, the network device can indicate, for each frequency band / frequency band combination, N^'μ,ρo n1 that is less than or equal to a value reported by terminal 101 at the frequency band / combination of CRQRZn / ZZnZ / 3 / YILI frequency bands. Alternatively, the network device can indicate to UE,on1 that it is less than or equal to a value reported by terminal 101 in each frequency band / frequency band combination. When the value of N^'p,trpen in formula o n1 is a value reported by terminal 101, the UE may report different values ​​across all frequency bands / frequency band combinations, and therefore N^v'p',rpen in formula o n1 must be corrected. The following cases are possible: (1) N^,'ρen in formula o n1 is one of the values ​​reported by the UE across all frequency bands / frequency band combinations, for example, a function transformation result of capabilities reported by terminal 101 across all frequency bands / frequency band combinations. For example, the function transformation result may be a maximum, minimum, or average value of the N3¡ capabilities reported by terminal 101 across all frequency bands / frequency band combinations.(2) N^pprpen in the formula or n1 is a value reported by the UE in each frequency band / frequency band combination and the number of coordinated cells and the number of non-coordinated cells in the formula are a corresponding number of coordinated cells and a corresponding number of non-coordinated cells in each frequency band. Therefore, N^jp'mill“-trP *nj+gie-trpen|afQrmu|ahayuna sumatotal de * ni + 7V / ^'Kln8lc~trptodas las bandas de frecuencia / combinaciones de banda de frecuencia y Σ (n ^,.,,,,111,-1,,, *ηγ+^DL.j.smSie-t,P^ θη. / =o in the formula there is a total sum of * ni + all the bands of. 7=0 frequency / frequency band combinations. For ^Pppp( e| processing can be done with reference to the above description. No examples are provided. In the previous example, if the target cell is one of the cells the terminal operates on, Terminal 101 can determine a fifth quantity based on the PDCCH's blind detection capability and a fourth quantity. The fourth quantity is a specified maximum number of non-overlapping CCEs in a time unit corresponding to a CORESET group in a second cell within the plurality of cells. The fifth quantity is a maximum number of non-overlapping CCEs in a time unit. CRQRZn / ZZnZ / 3 / YILI time corresponding to the second cell. The second cell includes one or more cells that are in the plurality of cells and whose parameter sets have the same value. For example, the number of non-overlapping CCEs detected by terminal 101 in a time unit corresponding to each CORESET group in the second cell does not exceed the fourth and fifth amounts. Optionally, a quantity of non-overlapping CCEs detected by terminal 101 in the time unit corresponding to the second cell, does not exceed a product of the fourth quantity and a quantity of CORESET groups in the second cell. For example, the second cell is a cell that is in the plurality of cells in which terminal 101 works and whose parameter set has a value of μ. In this case, the fourth quantity C^'cs^t' can be obtained and looked up in Table 2 based on A. For example, if the parameter sets of at least two of the plurality of cells on which terminal 101 works have different values, the fifth quantity can be determined based on the following formula: CpDccH*μ represents a maximum amount of non-overlapping CCEs in one or more c cells (i.e., the second cell) whose numerology has a value of A, 7V“PS represents the blind detection capability of the PDCCH of terminal 101, CpoccíTμ represents the fourth amount, is an amount of TRP (i.e., an amount of CORESET groups in cell c) in cell c whose numerology is Λ and 3 cells represents a total amount of TRP (i.e., an amount of / =0 c-0 groups CORESET in cells) in all cells. When a quantity N,μRρ of TRP in each coordinate cell is equal to n1, the above formula can be converted as follows: where dl. μ,muiu-trp represents a number of coordinate cells c whose numerology is CRQRZn / ZZnZ / 3 / YILI A, N^L'μ'single~trp represents a quantity of non-coordinated cells c whose numerology is NDLj,muit¡-,rp represents a quantity of coordinated cells in all cells and N^x'ns'e-rp represents a number of cells not coordinated in all cells. Furthermore, when all cells include only one non-coordinated cell (or a single TRP cell) and / or one coordinated cell (or a multiple TRP cell) in which there are two TRPs for coordinated transmission, i.e., when n1 is 2, the above formula can be converted as follows: total!, slot. μ __ xt cap max.slot .a ( xi DL .μ,mullí -trp * Q । N[ DL ,μ .sinyk· -trpx / , < Z + 1Nce¡x) / i=a It should be understood that the sum of a number of single TRP cells and a number of multiple TRP cells is a total of all cells configured by network device 102 for terminal 101. For example, the number of non-overlapping CCEs blindly detected by terminal 101 in a time unit corresponding to each CORESET group in each cell configured by network device 102 cannot exceed C^dcch*'1' ° Cpdcch*A. That is, the number of non-overlapping CCEs blindly detected by terminal 101 in the time unit corresponding to each CORESET group in each cell configured by network device 102 does not exceed miníc^^?'7', and γΙΛΛ,Π7γΙΛΛ,Π / Specifically, here, a value of , n1 or similar is described above. Currently, NR defines that terminal 101 can detect a PDCCH on a monitoring occasion (interval) corresponding to only one CORESET. When network device 102 performs a coordinated DCI transmission from terminal 101 using a plurality of TRPs, network device 102 configures a plurality of CORESETs for terminal 101, and there may be a case where the time-domain locations of determined intervals are based on the overlap of the plurality of CORESETs. Consequently, disorder occurs when terminal 101 blindly detects the PDCCH on an interval associated with each CORESET. One implementation of this request provides an additional communication method. A network device 102 performs coordinated DCI transmission from terminal 101 using a plurality of TRPs, and terminal 101 blindly detects a PDCCH in a CORESET corresponding to each TRP to avoid clutter during blind PDCCH detection. The PDCCH is used to carry the DCL As shown in Figure 4, the communication method may include the CRQRZn / ZZnZ / 3 / YILI following steps. S201. Network device 102 sends configuration information of a plurality of CORESETs to terminal 101, where each CORESET is used to indicate a candidate location of the downlink control channel (PDCCH) corresponding to the CORESET, and each CORESET corresponds to a TRP of the network device. Consequently, terminal 101 receives configuration information from the plurality of CORESET. S202. Terminal 101 determines one or more intervals based on the configuration information of the plurality of CORESETs, where each interval is used to indicate the duration of PDCCH monitoring by the terminal. S203. Terminal 101 receives, on a one or more interval basis, control information sent by the network device through the PDCCH. In an example of S202, terminal 101 can determine, based on the configuration information of the plurality of CORESETs, a plurality of intervals associated with the plurality of CORESETs. Each CORESET is associated with an interval. Specifically, terminal 101 can determine an interval length based on a maximum length (duration) of each CORESET Furthermore, terminal 101 can determine whether a time-domain separation between any two intervals is less than a minimum time-domain separation between intervals supported by terminal 101. The minimum time-domain separation between intervals supported by terminal 101 can be Z time-domain symbols, where Z is an integer. When Z is a negative integer, it indicates that terminal 101 supports overlap between a plurality of intervals. When Z is a non-negative integer, it indicates that terminal 101 does not support overlap between a plurality of intervals, and a minimum separation between any two pluralities of intervals is Z time-domain symbols. As shown in Figure 5, if network device 102 transmits configuration information for CORESET #1 and configuration information for CORESET #2 to terminal 101, terminal 101 can determine interval #1 based on the configuration information for CORESET #1 and interval #2 based on the configuration information for CORESET #2. As shown in Figure 5, interval #1 overlaps with interval #2. In this case, the time-domain separation Z between interval #1 and interval #2 can be considered less than 0. When the minimum time-domain separation between the intervals supported by terminal 101 can be less than 0, terminal 101 can blindly detect the PDCCH based on interval #1 and interval #2. For example, terminal 101 can report on the minimum domain separation CRQRZn / ZZnZ / 3 / YILI of time between the intervals supported by terminal 101 to network device 102 and network device 102 configures the configuration information of the CORESET plurality based on the minimum time domain separation. For example, when the minimum time domain separation between the intervals supported by the terminal is less than 0, network device 102 can configure CORESET #1 and CORESET #2 shown in Figure 5. When the minimum time domain separation between the intervals supported by the terminal is not less than 0, network device 102 does not configure CORESET #1 and CORESET #2 shown in Figure 5. In this example, terminal 101 blindly detects the PDCCH in the interval corresponding to each CORESET, and terminal 101 detects no more than one PDCCH in each interval. In this example, UE can report the minimum time-domain separation between intervals to detect DC I less frequently. In another example from S202, terminal 101 can determine an interval based on the configuration information of the CORESET plurality. The interval is associated with the CORESET plurality. In this example, terminal 101 can determine an interval length based on the maximum length of each of the plurality of CORESETs. Specifically, Figure 6 is used as an example. When network device 102 reports the configuration information of a CORESET #3 and the configuration information of a CORESET #4 to terminal 101, terminal 101 can determine the interval length based on the following formula: Dspan = max(CORESET#3) + max(CORESET#4), where Dspan represents the length of the interval, max(CORESET#3) represents a maximum length of CORESET #3 and max(CORESET#4) represents a maximum length of CORESET #4. In this example, terminal 101 can further determine, based on a number of CORESETs, a number of PDCCHs detected in the interval. For example, terminal 101 can detect two PDCCHs in the interval shown in Figure 6. For example, terminal 101 can report a maximum number of PDCCHs received within a given interval to network device 102, and network device 102 configures the DORESET plurality settings based on that number. Specifically, when terminal 101 does not support receiving multiple PDCCHs within a given interval, it can send information to the network device indicating that the number of PDCCHs received by terminal 101 within each interval is 1, and terminal 101 does not determine an interval based on the number of PDCCHs received. CRQRZn / ZZnZ / 3 / YILI configuration information of the plurality of CORESETs configured by the network device 102. In this example, terminal 101 can receive the PDCCH in the interval corresponding to the plurality of CORESETs, and terminal 101 can detect a plurality of PDCCHs in each interval. The number of PDCCHs detected by terminal 101 in each interval does not exceed a maximum number of PDCCHs received in an interval that is compatible with terminal 101. When the plurality of intervals overlap, terminal 101 may not perform blind detection in an overlapping interval. By implementing S203, terminal 101 can determine the time-frequency location of a candidate PDCCH location in each interval based on the configuration information of the CORESET plurality. Specifically, terminal 101 can determine the time-frequency location of the candidate PDCCH location in each interval based on the candidate PDCCH location information corresponding to each CORESET, and can also blindly detect the PDCCH at the time-frequency location of the candidate PDCCH location. Based on an inventive concept identical to that of the prior method, an embodiment of this application further provides a communications apparatus. The communications apparatus may implement the function, step, or operation of the network device or terminal in the prior method. For example, a functional module corresponding to the function, step, or operation of the prior method may be arranged in the communications apparatus to assist the communications apparatus in implementing the method. The function may be implemented by hardware, or it may be implemented by software or hardware running the corresponding software. The hardware or software includes one or more modules corresponding to the function. For example, the communications apparatus may be a chip or a communications chip including a communications module, or it may be implemented by a chip or a communications chip including a communications module. In one possible implementation, a communications device 700 shown in Figure 7 can be used as the network device in the embodiment of the above method and perform the steps carried out by the network device (e.g., network device 102) in the embodiment of the above method. As shown in Figure 7, the communications device 700 can include a communications module 701 and a processing module 702. The communications module 701 and the processing module 702 are coupled together. The communications module 701 can be configured to support the communications device 700 when performing communication. The communications module 701 can have a wireless communication function; for example, it can perform a CRQRZn / ZZnZ / 3 / YILI wireless communication with another communications device via a wireless air interface. The processing module 702 can be configured to support the communications device 700 in performing the processing action in the above method, which includes, but is not limited to: generating information and a message that are sent by the communications module 701 and / or demodulating and decoding a signal received by the communications module 701. Specifically, the 702 processing module can be configured to determine the first configuration information. The first configuration information is used to indicate a configured number of candidate PDCCH locations in a time unit corresponding to a first CORESET group, and the first CORESET group is one of a plurality of CORESET groups in a target cell. The 701 communications module can be configured to send the first configuration information to a terminal. The 701 communications module can also send initial information to the terminal. This initial information is used to indicate the first CORESET group. In one possible design, the first piece of information includes a top-layer index whose value is 0. Alternatively, a value of the first piece of information is 0. If the target cell is one of a plurality of cells in which the terminal operates, the 702 processing module can be further configured to: determine a third quantity based on a blind detection capability of the terminal's PDCCH and a second quantity, wherein the second quantity is a specified maximum number of candidate PDCCH locations in a time unit corresponding to a CORESET group in a first cell, the third quantity is a specified maximum number of candidate PDCCH locations in a time unit corresponding to the first cell, and the first cell includes one or more cells that are in the plurality of cells and whose parameter sets have the same value;and determine the second configuration information based on the second quantity and the third quantity, wherein the second configuration information is used to configure a candidate PDCCH location for the terminal in the time unit corresponding to the first cell.; In one possible design, the third quantity follows the following formula: ( ............. * nor + <N* ni + N -s‘xle-O dondet3ta,sat. representa la tercera cantidad, .v / iírepresenta la capacidad de detección a ciegas de PDCCH, representa la segunda cantidad, Λ / ™’'7'”' representa una cantidad de celdas, en la primera celda, para las cuales se configuran una pluralidad de CRQRZn / ZZnZ / 3 / YILI CORESET groups, N^Lp'sinslep represents a number of cells, in the first cell, for which a CORESET group is configured, N^n,uMrp represents a number of cells, in all cells configured by a network device, for which a plurality of CORESET groups are configured, A^^'^^ represents a number of cells, in all cells, for which a CORESET group is configured, a sum of Nc'¡¿'mMrpy N^jsm8letrpes a total number of all cells and a value of n1 is determined based on the capacity of the terminal. In one possible design, the third quantity follows the following formula: M^^· = Njí .(N^ ·“* *rcl+ *„1 + N where tDts sDt. represents the third quantity, represents the detection capacity to 'líPDC> blinds of PDCCH, represents the second quantity, represents a number of cells, in the first cell, for which a plurality of CORESET groups are configured, N^Lp'!'in8lep represents a number of cells, in the first cell, for which a CORESET group is configured, represents a number of cells, in all cells configured by a network device, for which a plurality of CORESET groups are configured, A^^'^^ represents a number of cells, in all cells, for which a CORESET group is configured, a sum of N^'muMrpy N^^,n8letrpes a total number of all cells and a value of n1 is equal to a number of CORESET groups in each of the cells, in the first cell, for which a plurality of CORESET groups are configured. In a possible design, the number of times the 701 communications module blindly detects a PDCCH in the time unit corresponding to the first cell does not exceed the product of the second quantity and the number of CORESET groups in the first cell. If the target cell is one of the plurality of cells in which the terminal operates, the processing module 702 can further determine a fifth quantity based on the blind detection capability of the terminal's PDCCH and a fourth quantity, wherein the fourth quantity is a specified maximum number of non-overlapping CCEs in a time unit corresponding to a CORESET group in a second cell, the fifth quantity is a maximum number of non-overlapping CCEs in a time unit corresponding to the second cell, and the second cell includes one or more cells that are in the plurality of cells and whose parameter sets have the same value; and determine the third configuration information based on the fourth quantity and the fifth quantity, wherein the third configuration information is used to configure a maximum number of non-overlapping CCEs for the terminal in the time unit corresponding to the second cell. In one possible design, the fifth quantity fulfills the following formula: z~- toral. slot. μ _ » t cap nuix.slot ,μ / x τ DL . μ.mullí -irp * i xt DL ,μ.single -npx / V / xj DL , i.mullí -up * 1 . xi DL . ¡.single -tip\UPDCCH— ϊνcells 'ePDCCH ' ' cellsHLcells 'kcellsHL JNcellsJ / ' =()where ^PDCCHOt A represents the fifth quantity, represents the blind detection capability of PDCCH, ^ represents the fourth quantity, represents a PDCCH represents the number of cells, in the second cell, for which a plurality of CORESET groups are configured, LΛζ°Λ / M'^ζ'7' represents the number of cells, in the first cell, for which a CORESET group is configured, N^'muMrp represents the number of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, represents the number of cells, in all cells, for which a configured CORESET group is configured, the sum of dem'Mrpy N^s'n8letrpes 'total number of all cells and the value of n1 is determined based on the capacity of the terminal. In one possible design, the fifth quantity fulfills the following formula: / 3 ^slolalslol,p _ »rcap xzmax.slot / i * i (f^OL.jjmtlMip * iKjOL.j .singl&lrps ^RDCCH— jVcclls''-'PDCCH ' cellsní^ cellsJcellsní^~ ^cells1 / . / =o where Cpdcch01 μ represents the fifth quantity, N represents the blind detection capability of PDCCH, represents the fourth quantity, N^ρ'ηηι,ρρ represents a CPDCCH quantity of cells, in the second cell, for which a plurality of CORESET groups are configured, N^Lp's,n8'etrp represents the quantity of cells, in the first cell, for which a CORESET group is configured, represents the quantity of cells, in all cells configured by the network device, for which a plurality are configured CRQRZn / ZZnZ / 3 / YILI of CORESET groups, N^s,nsletrp represents the number of cells, in all cells, for which a configured CORESET group is set, the sum of N^n,uMrpy 'total number of all cells and a value of n1 is equal to a number of CORESET groups in each of the cells, in the second cell, for which a plurality of CORESET groups are set. In a possible design, the number of non-overlapping CCEs detected by the terminal in the time unit corresponding to the second cell does not exceed a product of the fourth quantity and a number of CORESET groups in the second cell. In a possible design, determining a value of n1 based on the terminal's capability includes: The value of n1 is less than or equal to the second piece of information, the second piece of information is used to indicate a value of the PDCCH blind detection capability, and the second piece of information is 1 or 2. In one possible design, the second piece of information is information reported by the terminal for each frequency band or combination of frequency bands. The value of the blind detection capability of the terminal's PDCCH is a number of transmit / receive points corresponding to the plurality of cells, or the value of the blind detection capability of the terminal's PDCCH is my 1 <m<16. The 701 communications module can be further configured to: send one or more multi-TRP coordination capabilities from the terminal to the network device, where one or more multi-TRP coordination capabilities are used to determine the blind discovery capability of the terminal's PDCCH; and receive a first indication from the network device, where the first indication is used to determine the blind discovery capability of the PDCCH. The PDCCH blind discovery capability is one of the one or more multi-TRP coordination capabilities. Alternatively, each multi-TRP coordination capability is one of one or more candidate parameter values, and the PDCCH blind discovery capability value is a candidate parameter value that does not exceed a maximum value of one or more multi-TRP coordination capabilities. The 701 communications module can also be configured to receive the second piece of information from the terminal. This second piece of information is used to indicate the blind detection capability value of the terminal's PDCCH. When a quantity from a plurality of cells is greater than a value of the blind detection capability of PDCCH, the processing module 702 can determine the third quantity based on a value from a set of parameters of the first cell, the second quantity, the amount of CORESET group in the first cell, and an amount of CORESET groups in the plurality of cells. CRQRZn / ZZnZ / 3 / YILI When a quantity from a plurality of cells is greater than a value of the blind detection capability of PDCCH, the processing module 702 can determine the fifth quantity based on a value from a parameter set of the second cell, the fourth quantity, the quantity of CORESET groups in the second cell, and a quantity of CORESET groups in the plurality of cells. In another possible implementation, the communications apparatus provided in this embodiment of this application may alternatively include a hardware component. The hardware component is, for example, a processor, memory, or a transceiver. To facilitate understanding, a structure of the communications apparatus is described using a base station as an example in Figure 8. As shown in Figure 8, the communications apparatus 800 may include a transceiver 801, a memory 802, and a processor 803. The transceiver 801 can be used by the communications apparatus to perform communication, for example, sending or receiving the first piece of information described above. The memory 802 is coupled to the processor 803 and can be configured to store a program and data necessary for the communications apparatus 800 to implement a function. The processor 803 is configured to support the communications apparatus 800 in performing a corresponding function as described above. The function can be implemented by invoking the program stored in memory 802. Specifically, the 801 transceiver can be a wireless transceiver and can be configured to support the 800 communications apparatus in receiving and transmitting signals and / or data over a wireless air interface. The 801 transceiver may also be referred to as a transceiver unit or communications unit. The 801 transceiver may include a radio frequency unit and one or more antennas. For example, the radio frequency unit, as a remote radio unit (RRU), may be specifically configured to transmit a radio frequency signal and perform the conversion between the radio frequency signal and a baseband signal. The one or more antennas may be specifically configured to radiate and receive the radio frequency signal. Optionally, the 801 transceiver may include only the radio frequency unit. In this case, the 800 communications apparatus may include the 801 transceiver, the 802 memory, the 803 processor, and an antenna. The 802 memory and 803 processor can be integrated or independent of each other. As shown in Figure 8, the 802 memory and 803 processor can be integrated into a control unit 810 of the communications apparatus 800. For example, the control unit 810 might include a baseband unit of an LTE base station, and the baseband unit might also be referred to as a digital unit. CRQRZn / ZZnZ / 3 / YILI (digital unit, DU). Alternatively, the 810 control unit may include a distributed unit (distribution unit, DU) and / or a centralized unit (centralized unit, CU) in a base station for 5G and future radio access technologies. The 810 control unit may include one or more boards. For example, a plurality of boards may jointly support a radio access network (e.g., an LTE network) of a single access standard, or a plurality of boards may respectively support radio access networks of different access standards (e.g., an LTE network, a 5G network, or another network). The 802 memory and 803 processor may serve one or more boards. That is, the 802 memory and 803 processor may be located on each board. Alternatively, multiple boards can share the same 802 memory and the same 803 processor. In addition, the necessary circuitry can be placed on each board.For example, the circuit can be configured to couple the 802 memory to the 803 processor. The 801 transceiver, the 803 processor, and the 802 memory can be connected using a bus structure (bus) and / or other connection means. Based on the structure shown in Figure 8, when the 800 communication device needs to send data, the 803 processor can perform baseband processing on the data to be sent and then output a baseband signal to the radio frequency unit. The radio frequency unit performs radio frequency processing on the baseband signal and then sends a radio frequency signal in the form of an electromagnetic wave through the antenna. When data is to be sent to the 800 communication device, the radio frequency unit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and sends the baseband signal to the 803 processor. The 803 processor converts the baseband signal back into data and processes the data. For example, the 803 processor can be configured to perform the steps carried out by the 702 processing module and / or the 801 transceiver can be configured to perform the steps carried out by the 701 communications module. In one possible implementation, a communications device 900 shown in Figure 9 can be used as a terminal in carrying out the method described above and perform the steps carried out by the terminal (e.g., terminal 101) in the method described above. As shown in Figure 9, the communications device 900 can include a communications module 901 and a processing module 902. The communications module 901 and the processing module 902 are coupled together. The communications module 901 can be configured to support the communications device 900 during communication. The communications module 901 can have a wireless communication function; for example, it can establish wireless communication with another device. CRQRZn / ZZnZ / 3 / YILI communications device via a wireless air interface. The processing module 902 can be configured to support the communications device 900 in carrying out the processing action in the above method, which includes, among others: generating information and a message that are sent by the communications module 901 and / or demodulating and decoding a signal received by the communications module 901. For example, the 901 communications module can be configured to receive the first configuration information from a network device. The first configuration information is used to indicate a configured number of candidate PDCCH locations in a time unit corresponding to a first CORESET group. When the configured number is greater than a first number, the 901 communications module can be further configured to detect a PDCCH in candidate PDCCH locations whose number is less than or equal to the first number. Alternatively, when the configured number is less than or equal to the first number, the 901 communications module can be further configured to detect a PDCCH in candidate PDCCH locations whose number is less than or equal to the configured number.The first quantity is a pre-set maximum number of candidate PDCCH locations in a unit of time corresponding to a CORESET group in a target cell, and the first CORESET group is one of a plurality of CORESET groups in the target cell. The 901 communications module can also be configured to receive the first information from the network device. This first information is used to identify the first CORESET group. In one possible design, the first piece of information includes a top-layer index whose value is 0. Alternatively, a value of the first piece of information is 0. If the target cell is one of a plurality of cells in which the terminal operates, the processing module 902 can be configured to determine a third quantity based on a blind detection capability of the terminal's PDCCH and a second quantity, wherein the second quantity is a specified maximum number of candidate PDCCH locations in a time unit corresponding to a CORESET group in a first cell, the third quantity is a specified maximum number of candidate PDCCH locations in a time unit corresponding to the first cell, and the first cell includes one or more cells that are in the plurality of cells and whose parameter sets have the same value; and a number of times that the communications module 901 blindly detects the PDCCH in a time unit corresponding to each CORESET group in the first cell does not exceed the second quantity and the third quantity. CRQRZn / ZZnZ / 3 / YILI In one possible design, the third quantity follows the following formula: = #3 ·<N^........... *nl + * ni + N where 1019,501. represents the third quantity, N^s represents the detection capability at '^PDO blind PDCCH, represents the second quantity, Ν®Ρρ'ηΗιΐΜιρ represents a number of cells, in the first cell, for which a plurality of CORESET groups are configured, N^L / ''s,nsIe,rp represents a number of cells, in the first cell, for which a CORESET group is configured, N^pmuMrp represents a number of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, N^¿'s'ngle,rp represents a number of cells, in all cells, for which a CORESET group is configured, a sum of Ν^'ηιΜ'ρ^ N^.'x,8l<í>rps a total number of all cells and a value of n1 is determined based on the capacity of the terminal. In one possible design, the third quantity follows the following formula: totul.sloi. μ _ άγ cap max.slot .μ / χτ DL .p.muhi -np * i . XT DL .μ .single-irp\ / V-1 / xj DL . / .mullí-up * „ ​​1 , ΚΓ DL .¡.single-irp\1V1PDCCH ^'cclls7WPDCCI11eells ''^^^cellsJeells eellsJ / ' = <> where wt9sol represents the third quantity, -VX represents the detection capability at ''voccibligas of PDCCH, represents the second quantity, represents a number of cells, in the first cell, for which a plurality of CORESET groups are configured, represents a number of cells, in the first cell, for which a CORESET group is configured, N^^muMrpre represents a number of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, N^s'sle,rp represents a number of cells, in all cells, for which a CORESET group is configured, a sum of N™j¿nnMrpy N^^i8A <ί,γρes una cantidad total de todas las celdas y un valor n1 es igual que grupos coreset en cada celdas, la primera celda, para lo cual se configuran pluralidad coreset.In one possible design, a number of candidate PDCCH locations CRQRZn / ZZnZ / 3 / YILI configured by the network device in a time unit corresponding to each CORESET group in the first cell, does not exceed the second and third amounts. If the target cell is one of the plurality of cells in which the terminal operates, the processing module 902 can be configured to determine a fifth quantity based on the blind detection capability of the terminal's PDCCH and a fourth quantity, wherein the fourth quantity is a specified maximum quantity of non-overlapping CCEs in a time unit corresponding to a CORESET group in a second cell, the fifth quantity is a maximum quantity of non-overlapping CCEs in a time unit corresponding to the second cell, and the second cell includes one or more cells that are in the plurality of cells and whose parameter sets have the same value; and a quantity of non-overlapping CCEs detected by the communications module 901 in a time unit corresponding to each CORESET group in the second cell does not exceed the fourth quantity and the fifth quantity. In one possible design, the fifth quantity fulfills the following formula: ^total.slot^ _ ΆΤ-cap x-nnax.slcL / / * i . ^OL.p..single-trp\ / X ' / 'KjDL. / .multi-trp * i . vrDL, / „wig / e- / ^'\ '-'PDCCH— JVcells''-'PDCCH 'J / -i=o where Cpdcch01' represents the fifth quantity, represents the blind detection capability of PDCCH, represents the fourth quantity, represents a '-PDCCH quantity of cells, in the second cell, for which a plurality of CORESET groups are configured, N^Lp'smgletrp represents the quantity of cells, in the first cell, for which a CORESET group is configured, N^muMrp represents the quantity of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, the quantity of cells, in all cells, for which a configured CORESET group is configured, the sum of N^muMrp and N^s,sle'rps the total quantity of all cells and the value of n1 is determined based on the terminal's capacity. In one possible design, the fifth quantity fulfills the following formula: Z-· tola!, slot, μ _ λ τ cap ζ^· max.slot ,μ / χτ DL .μ .mull -ttp ϕ i , xj DL ,μ ,ΗιιμΙι· -trpx / / xj DL , ¡.multi -hp * i , xj DL , ¡ .single -trp\ePDCCH— 2Vcdls 'vPDCCH *V iNcdls1cellsJ7 , 'iNccüsrt 1 iNcdls7 / i=Qdonde Cpdcch01 µrepresents the fifth quantity, representing the detection capability CRQRZn / ZZnZ / 3 / YILI blindly of PDCCH, represents the fourth quantity, represents a ''PDCCH quantity of cells, in the second cell, for which a plurality of CORESET groups are configured, represents the quantity of cells, in the first cell, for which a CORESET group is configured, N^¿muMrp represents the quantity of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, p represents the quantity of cells, in all cells, for which a configured CORESET group is configured, the sum of|g total quantity|of all|cells and a value of n1 eS equals a Quantity of CORESET groups in each of the cells, in the second cell, for which a plurality of CORESET groups are configured. In a possible design, a maximum number of non-overlapping CCEs configured by the network device in the time unit corresponding to the second cell, does not exceed a product of the fourth quantity and a number of CORESET groups in the second cell. In a possible design, determining a value of n1 based on the terminal's capability includes: The value of n1 is less than or equal to the second piece of information, the second piece of information is used to indicate a value of the PDCCH blind detection capability, and the second piece of information is 1 or 2. In one possible design, the second piece of information is information reported by the terminal for each frequency band or combination of frequency bands. The value of the terminal PDCCH blind detection capability is a number of transmit / receive points corresponding to the plurality of cells, or the value of the terminal PDCCH blind detection capability is my 1 <m<16.The communications module 901 can be further configured to receive one or more multi-TRP coordination capabilities from the terminal. The processing module 902 is further configured to determine the terminal's PDCCH blind detection capability based on one or more multi-TRP coordination capabilities. The PDCCH blind detection capability is one of the one or more multi-TRP coordination capabilities. Alternatively, each multi-TRP coordination capability is one of one or more candidate parameter values, and the PDCCH blind detection capability value is a candidate parameter value that does not exceed a maximum value of one or more multi-TRP coordination capabilities. The communications module 901 can also be configured to send an initial indication to the terminal. This initial indication is used to indicate the PDCCH blind detection capability. CRQRZn / ZZnZ / 3 / YILI The 901 communications module can also be configured to send a second piece of information to the network device. This second piece of information is used to indicate the PDCCH blind detection capability value. When a quantity from a plurality of cells is greater than a value of the blind detection capability of PDCCH, the processing module 90 can determine the third quantity based on a value from a set of parameters of the first cell, the second quantity, the amount of CORESET group in the first cell, and an amount of CORESET groups in the plurality of cells. When a quantity from a plurality of cells is greater than a value of the blind detection capability of PDCCH, the processing module 902 can determine the fifth quantity based on a value from a parameter set of the second cell, the fourth quantity, the quantity of CORESET groups in the second cell, and a quantity of CORESET groups in the plurality of cells. In another possible implementation, when the communications device is a terminal 101, as shown in Figure 10. For ease of understanding and illustration, the structure of the communications device in Figure 10 is described using an example where the terminal is a mobile phone. As shown in Figure 10, the communications device 1000 may include a processor 1001, a memory 1002, and a transceiver 1003. Processor 1001 can be configured to: process a communications protocol and communication data, control the terminal, execute a software program, process software program data, etc. Memory 1002 can be configured to store a program and data, and processor 1001 can perform, based on the program, the method performed by terminal 101 in the implementations of this request. Transceiver 1003 may include a radio frequency unit and an antenna. For example, the radio frequency unit may be configured to: perform the conversion between a baseband signal and a radio frequency signal, and process the radio frequency signal. The antenna may be configured to send and receive a radio frequency signal in the form of an electromagnetic wave. Optionally, only the radio frequency unit may be considered transceiver 1003. In this case, communications apparatus 1000 may include processor 1001, memory 1002, transceiver 1003, and an antenna. Optionally, the communications device 1000 may also include an input / output device 1004, for example, a component such as a touchscreen, display screen, or keyboard, which can be configured to receive data entered by a user and output data to the user. It should be noted that some types of communications devices may not have input / output devices. CRQRZn / ZZnZ / 3 / YILI Based on the structure shown in Figure 10, when communication device 1000 needs to send data, processor 1001 can perform baseband processing on the data to be sent and then output a baseband signal to the radio frequency unit. The radio frequency unit performs radio frequency processing on the baseband signal and then sends a radio frequency signal in the form of an electromagnetic wave through the antenna. When data is to be sent to communication device 1000, the radio frequency unit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and sends the baseband signal to processor 1001. Processor 1001 converts the baseband signal back into data and processes the data. For example, processor 1003 can be configured to perform the steps carried out by processing module 902 and / or transceiver 1001 can be configured to perform the steps carried out by communications module 901. Furthermore, depending on an actual use requirement, the communications apparatus provided in this implementation of this application may include a processor, and the processor invokes an external transceiver and / or memory to implement the aforementioned function, step, or operation. The communications apparatus may also include memory, and the processor invokes and executes a program stored in memory to implement the aforementioned function, step, or operation. Alternatively, the communications apparatus may include a processor and a transceiver, and the processor invokes and executes a program stored in external memory to implement the aforementioned function, step, or operation. Alternatively, the communications apparatus may include a processor, memory, and a transceiver. A person skilled in the art should understand that the implementations of this application may be provided as a method, a system, or a computer program product. Therefore, this application may use a form of hardware-only implementation, software-only implementation, or implementation with a combination of software and hardware. Furthermore, this application may use a form of computer program product that is implemented on one or more computer-usable storage media (including, but not limited to, magnetic disk memory, CD-ROM, optical memory, and the like) that includes computer-usable program code. This application is described with reference to the flowcharts and / or block diagrams of the method, the device (system), and the software product in accordance with this application. It should be understood that software instructions may be used to implement each process and / or each block in the flowcharts and / or block diagrams, and a combination of a process and / or a block in the diagrams. CRQRZn / ZZnZ / 3 / YILI flowcharts and / or block diagrams. These computer program instructions may be provided for a general-purpose computer, a dedicated computer, an embedded processor, or a processor of another programmable data processing device to generate a machine, so that the instructions executed by the computer or the processor of the other programmable data processing device generate a machine to implement a specific function in one or more processes in the flowcharts and / or in one or more blocks in the block diagrams. These computer program instructions can alternatively be stored in computer-readable memory, which can instruct a computer or other programmable data processing device to operate in a specific way, such that the instructions stored in the computer-readable memory generate an artifact that includes an instruction apparatus. The instruction apparatus implements a specific function in one or more processes in flowcharts and / or in one or more blocks in block diagrams. These computer program instructions can be loaded into a computer or other programmable data processing device, so that a series of operations and steps are performed on the computer or other programmable device, thus generating computer-implemented processing. Therefore, the instructions executed on the computer or other programmable device provide steps to implement a specific function in one or more processes in flowcharts and / or in one or more blocks in block diagrams. It is evident that a person skilled in the art may make various modifications and variations to this application without exceeding the scope of protection of this application. This application is intended to cover such modifications and variations to this application provided they fall within the scope of protection defined by the claims of this application and equivalent technologies therein.

Claims

1. A communication method comprising: receiving, by a terminal, first configuration information from a network device, wherein the first configuration information is used to indicate a configured number of downlink physical control channel PDCCH candidate locations in a time unit corresponding to a first CORESET group of control resource set; and when the configured number is greater than a first number, detecting, by the terminal, a PDCCH in PDCCH candidate locations whose number is less than or equal to the first number;or when the configured quantity is less than or equal to a first quantity, detect, by the terminal, a PDCCH in candidate PDCCH locations whose quantity is less than or equal to the configured quantity, wherein the first quantity is a preset maximum quantity of candidate PDCCH locations in a unit of time corresponding to a CORESET group in a target cell and the first CORESET group is one of a plurality of CORESET groups in the target cell.; 2. The method according to claim 1, wherein the method further comprises: receiving, by the terminal, the first information from the network device, wherein the first information is used to indicate the first CORESET group 3. The method according to claim 2, comprising that: a value of the first information is 0.

4. The method according to any of claims 1 to 3, comprising that the target cell is one of a plurality of cells in which the terminal operates;and the method further consists of: determining, by the terminal, a third quantity based on a blind detection capability of the terminal's PDCCH and a second quantity, wherein the second quantity is a specified maximum number of candidate PDCCH locations in a unit of time corresponding to a CORESET group in a first cell, the third quantity is a specified maximum number of candidate PDCCH locations in a unit of time corresponding to the first cell and the first cell comprises one or more cells that are in the plurality of cells and whose parameter sets have the same value, wherein CRQRZn / ZZnZ / 3 / YILI is a number of times the terminal blindly detects the PDCCH in a unit of time corresponding to each CORESET group in the first cell, does not exceed the second quantity and the third quantity.

5. The method according to claim 4, comprising that: the third quantity fulfills the following formula: J / total.slot.p _ Λ / cap ir max.slot. / í ( ^UC,p,inuM-trp * i , xj OC,p,single-trp\ / yz χτ OL.JjmUHrp * i , 1V1 PDCCH JVcclls PDCCH yíNcells L cells ' cells ní^~^cells / >=° where tota -ot represents the third quantity, ICX represents the blind detection capacity of PDCCH, A / ^ch 'a represents the second quantity, N^Lp'mi,ltl'tl p re'presevA.N^Lp'sinsle,rp represents a number of cells, in the first cell, for which a plurality of CORESET groups are configured, N^muMrp represents a number of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, a number of cells, in all cells, for which a CORESET group is configured, a sum of N^¿'m'Mrpy N^C'n8l&trp is a total number of all cells and a value of n1 is determined based on the capacity of the terminal.

6. The method according to claim 4, comprising that the third quantity complies with the following formula: / 3 _ Λ / cap x zmax,slot. / < z N OL.p.multi-trp * . x. OL.p.single-lrps / y / jmihi-trp * , xTDL. / ..s7»g / t'-i 1V1 PDCCH — JVcclls ' PDCCH ' 1N cells cells J ¿S^eells m + 1N cells / . / =0 where tota sol represents the third quantity, N^represents the detection capacity to '^PDO J blinds of PDCCH, represents the second quantity, represents a quantity of cells, in the first cell, for which a plurality of CORESET groups are configured, a quantity of a plurality of CORESET groups is n1, s'ngiet>-pre^resenia a quantity qe cells, in the first cell, for which a CORESET group is configured, N^¿nn'Mrprepresents a quantity of cells, in all cells configured by the network device, for which a plurality of CRQRZn / ZZnZ / 3 / YILI CORESET groups are configured, represents a quantity of cells, in all cells, for which a CORESET group is configured and a sum of N^¿'muMrpy N^j'sm8letrpes a total quantity of all cells.

7. The method according to any of claims 4 to 6, comprising that: the number of times the terminal blindly detects the PDCCH in the time unit corresponding to the first cell does not exceed a product of the second quantity and a number of CORESET groups in the first cell.

8. The method according to any one of claims 1 to 7, comprising that the target cell is one of the plurality of cells in which the terminal operates;and the method further consists of: determining, by the terminal, a fifth quantity based on the blind detection capability of the terminal's PDCCH and a fourth quantity, wherein the fourth quantity is a specified maximum quantity of non-overlapping control channel elements (CCEs) in a unit of time corresponding to a CORESET group in a second cell, the fifth quantity is a maximum quantity of non-overlapping CCEs in a unit of time corresponding to the second cell, and the second cell comprises one or more cells that are in the plurality of cells and whose parameter sets have the same value, wherein a quantity of non-overlapping CCEs detected by the terminal in a unit of time corresponding to each CORESET group in the second cell does not exceed the fourth quantity and the fifth quantity.

9. The method according to claim 8, comprising that: the fifth quantity fulfills the following formula: ftotaliaot,p _ xrcap z->inax,slot, / / z OUfumM-trp * ., nj f * „1 , mDLJjMh PDCCH — 7Vcells ''-'PDCCH ní cells J ' 1N cells ní~T ^cdls / 7=0 where PDccHOt μ represents the fifth quantity, represents the blind detection capability of PDCCH, ™a;5ror^represents the fourth quantity, Ν^μ'ιηί',Μιρ represents a PDCCH quantity of cells, in the second cell, for which a plurality of CORESET groups are configured, N^Lp's,sletrp represents the quantity of cells, in the second cell, for which a CORESET group is configured, N^'mMrp represents the quantity of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, N^s,nsletrp represents the number of cells, in all cells, for which a configured CORESET group is set, the sum of N^n,uMrpy total number of all cells and the value of n1 is determined based on the terminal capacity.

10. The method according to claim 8, comprising that: the fifth quantity fulfills the following formula: / 3 ^total,slot,p _ Aycap x^inax,slot, / z / xt DL,p,nnilti-trp * M1 i NT VL,p,single-trp\ / X ' / ·κγϋί, / >κ / Λ-ίφ * i xj DL,j,smgle-i PDCCH — -^cclls ' PDCCH ' k iN cells cells ' ¿^^^cells nL iN cells / 7=° where ^PDccHOt μ represents the fifth quantity, N represents the blind detection capability of PDCCH, represents the fourth quantity, represents a CPDCCH quantity of cells, in the second cell, for which a plurality of CORESET groups are configured, a quantity of a plurality of CORESET groups is n1, j^DL^^ingienp represents |a number of cells, in the first cell, for which a CORESET group is configured, '^represents the number of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, N^sins'a,rp represents the number of cells, in all cells,for which a CORESET group is configured and the sum of N^¿muMrpy N^jj'n8letrp is the total number of all cells.

11. The method according to any of claims 8 to 10, comprising that a quantity of non-overlapping CCE detected by the terminal in the time unit corresponding to the second cell, does not exceed a product of the fourth quantity and a quantity of CORESET groups in the second cell.

12. The method according to claim 5, 6, 9 or 10, comprising: determining a value of n1 based on a terminal capability consisting of: the value of n1 being less than or equal to a value of the second piece of information, the second piece of information being used to indicate a value of the blind detection capability of PDCCH and the value of the second piece of information being 1 or 2.

13. The method according to claim 12, comprising that the second information is information reported by the terminal for each frequency band or combination of frequency bands. CRQRZn / ZZnZ / 3 / YILI 14. The method according to any of claims 4 to 13, comprising: the value of the blind detection capability of the terminal's PDCCH is a number of transmit / receive points corresponding to the plurality of cells; or the value of the blind detection capability of the terminal's PDCCH is my 1 <m<16.

15. The method according to any of claims 4 to 14, further comprising: sending, by the terminal, one or more multi-transmit / receive point TRP coordination capabilities of the terminal to the network device, wherein one or more multi-transmit / receive point TRP coordination capabilities are used to determine the blind detection capability of the terminal's PDCCH; and receiving, by the terminal, a first indication from the network device, wherein the first indication is used to indicate the blind detection capability of the PDCCH, wherein: the blind detection capability of the PDCCH is one of the one or more multi-TRP coordination capabilities; or each multi-TRP coordination capability is one of one or more candidate parameter values ​​and the value of the blind detection capability of the PDCCH is a candidate parameter value that does not exceed a maximum value of one or more multi-TRP coordination capabilities.

16. The method according to any of claims 4 to 15, further comprising: sending, by the terminal, the second piece of information to the network device, wherein the second piece of information is used to indicate the value of the blind detection capability of PDCCH.

17. The method according to any of claims 4 to 7, comprising that when a quantity of a plurality of cells is greater than a value of the blind detection capability of the PDCCH, the terminal determines a third quantity based on a blind detection of the terminal's PDCCH and a second quantity consists of: determining, by the terminal, the third quantity based on a value of a set of parameters of the first cell, the second quantity, the number of CORESET groups in the first cell and a number of CORESET groups in the plurality of cells.

18. The method according to any of claims 8 to 11, wherein when a quantity of a plurality of cells is greater than a value of the blind detection capability of PDCCH, the terminal determines, by means of a fifth quantity based on the blind detection of the terminal's PDCCH and a fourth quantity, the fifth quantity based on a value of a set of parameters of the second cell, the fourth quantity, the number of CORESET groups in the second cell, and a number of CORESET groups in the plurality of cells.

19. A communication method comprising: determining, by means of a network device, the first configuration information, wherein the first configuration information is used to indicate a configured number of candidate locations of the downlink physical control channel (PDCCH) in a time unit corresponding to a first CORESET group of the control resource pool, and the first CORESET group is one of a plurality of CORESET groups in a target cell; and sending, by the network device, the first configuration information to a terminal.

20. The method according to claim 19, further comprising: when the configured quantity is greater than a first quantity, sending, via the network device, a PDCCH to candidate PDCCH locations whose quantity is less than or equal to the first quantity; or when the configured quantity is less than or equal to a first quantity, sending, via the network device, a PDCCH to candidate PDCCH locations whose quantity is less than or equal to the configured quantity, wherein: the first quantity is a pre-established maximum quantity of candidate PDCCH locations in a time unit corresponding to a CORESET group in the target cell, and the first CORESET group is one of the plurality of CORESET groups in the target cell.

21. The method according to claim 19 or 20, further comprising: sending, by the network device, a first piece of information to the terminal, wherein the first piece of information is used to indicate the first CORESET group.

22. The method according to claim 21, comprising that: a value of the first information is 0.

23. The method according to any of claims 19 to 22, comprising that the target cell is one of a plurality of cells in which the terminal operates; and the method further comprises: determining, by the network device, a third quantity based on a blind detection capability of the terminal's PDCCH and a second quantity, wherein the second quantity is a specified maximum number of candidate PDCCH locations in a time unit corresponding to a CORESET group in a first cell, the third quantity is a specified maximum number of candidate PDCCH locations in a time unit corresponding to the first cell, and the first cell comprises one or more cells that are in the plurality of cells and whose parameter sets have the same value;and determine, by the network device, a second configuration information based on the second quantity and the third quantity, wherein the second configuration information is used to configure a candidate PDCCH location for the terminal in the time unit corresponding to the first cell.; 24. The method according to claim 23, comprising that: the third quantity fulfills the following formula: j,rtotal.slolp _ xrcap ιγ max,slot. / i / f^¡DL.p.multi-t!p * i χτ OL.p.single-trp\ / V / »jDLj.™ / íkrp * 1 xjOC.j .single-l 1V1 PDCCH — 1V cells 1V1 PDCCH V 1 Ve / ís ní ' cells ' / Z . V1 - culis cells / 7=0 where t3ta .sot represents the third quantity, represents the detection capability to '^PDO blind PDCCH, represents the second quantity, represents a number of cells, in the first cell, for which a plurality of CORESET groups are configured, N^Lp,x'ng,etrp represents a number of cells, in the first cell, for which a CORESET group is configured, N^nu'Mrp represents a number of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, represents a number of cells, in all cells, for which a CORESET group is configured, a sum of N^sing,e,rp is a total number of all cells and a value of n1 is determined based on the terminal capacity.

25. The method according to claim 23, comprising that the third quantity complies with the following formula: j.jtolal.slot,p _ x rcap .y max.slot. / i ( y¿O\..pjnM^rp * i , xj OC.p.smgle-lrp\ / V-1 / xj OL.J,multUrp * „1 , KJ OC.j rsingle-l 1V1 PDCCH JV cells PDCCH 'kl\«7.s· ní cells ' / / .cells cells / 7=0 where , sol ^represents the third quantity, N^s represents the blind detection capability of PDCCH, represents the second quantity, j\jDL¿i,muiMrp represents a quantity of cells, in the first cell, for which a plurality of CRQRZn / ZZnZ / 3 / YILI CORESET groups are configured, a quantity of a plurality of CORESET groups is n1, re^re3en^a a quantity of cells, in the first cell, for which a CORESET group is configured, N^¿muMrp represents a quantity of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, represents a quantity of cells, in all cells, for which a CORESET group is configured and a sum of N^muMrpy ND^msletrp is a total quantity of all cells.

26. The method according to any of claims 23 to 25, comprising that: the number of times the terminal blindly detects the PDCCH in the time unit corresponding to the first cell does not exceed a product of the second quantity and a number of CORESET groups in the first cell.

27. The method according to any of claims 23 to 26, comprising that the target cell is one of the plurality of cells in which the terminal operates; and the method further comprises: determining, by the network device, a fifth quantity based on the blind detection capability of the terminal's PDCCH and a fourth quantity, wherein the fourth quantity is a specified maximum quantity of non-overlapping control channel elements (CCEs) in a time unit corresponding to a CORESET group in a second cell, the fifth quantity is a maximum quantity of non-overlapping CCEs in a time unit corresponding to the second cell, and the second cell comprises one or more cells that are in the plurality of cells and whose parameter sets have the same value;and determine, by the network device, a third configuration information based on the fourth quantity and the fifth quantity, wherein the third configuration information is used to configure a maximum number of non-overlapping CCEs for the terminal in the time unit corresponding to the second cell.; 28. The method according to claim 27, comprising that: the fifth quantity complies with the following formula: ^total,slot,p __ \TC^ / ^max^lot, / / / τ OL,pjnulti-trp * i . τ DL,p,single-trpx / X ' / ~KjOL, / .imilti-tip * i , 'kjDL, / ..s77?^ / í'- / PDCCH — 7V cells ' PDCCH ' k iN cells / 71 H- 1Ί cells JZ^^^cells ^^cells / 7=0 where Cpdcch01 μ represents the fifth quantity, represents the blind detection capability of PDCCH, mnt5roi-t(represents the fourth quantity, N^'WuiiMrp represents a PDCCH CRQRZn / ZZnZ / 3 / YILI quantity of cells, in the second cell, for which a plurality of CORESET groups are configured, j\j^L^ingietrP represents the quantity of cells, in the first cell, for which a CORESET group is configured, N^¿muMrp represents the quantity of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, N^ps'n8le>rp represents the quantity of cells, in all cells, for which a configured CORESET group is set, the sum of N^muMrpy N^sinsletrp is the total number of all cells and the value of n1 is determined based on the capacity of the terminal.

29. The method according to claim 27, comprising that: the fifth quantity complies with the following formula: / 3 s-itotaLslol.p -»rcap ximax.slol. / í / -χ.τ Oh.pjnulti-trp 4: 1 , τ DCp.single-trpx / X ' / -\rrOL·. j jmdti-trp 4: -1 . -x.1DL. j .single-i PDCCH — ^cells ' C PDCCH ' k cells nl±^cetls ' Z . k iN celís nl±^celís / . / =0 where ^PDccHOt μ represents the fifth quantity, represents the blind detection capability of PDCCH, re represents the fourth quantity, NcLp''miltl~p represents a PDCCH quantity of cells, in the second cell, for which a plurality of CORESET groups are configured, a quantity of a plurality of CORESET groups is n1, ^DLp,smgietrP represents the quantity of cells, in the first cell, for which a CORESET group is configured, N^¿'miMrp represents the quantity of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, N^'''8le>rp represents the quantity of cells, in all cells, for which a CORESET group is configured and the sum of N^mul,irpy N^¿sinsle,rps the total quantity of all cells.

30. The method according to any of claims 27 to 29, comprising that a quantity of non-overlapping CCE detected by the terminal in the time unit corresponding to the second cell, does not exceed a product of the fourth quantity and a quantity of CORESET groups in the second cell.

31. The method according to claim 24, 25, 28 or 29, comprising: that a value of n1 is determined based on a terminal capability consisting in that: the value of n1 is less than or equal to a value of the second information, the CRQRZn / ZZnZ / 3 / YILI second information is used to indicate a value of the blind detection capability of PDCCH and the value of the second information is 1 or 2.

32. The method according to claim 31, comprising that the second information is information reported by the terminal for each frequency band or combination of frequency bands.

33. The method according to any of claims 23 to 32, comprising: the value of the blind detection capability of the terminal's PDCCH is a number of transmit / receive points corresponding to the plurality of cells; or the value of the blind detection capability of the terminal's PDCCH is my 1 <m<16.

34. The method according to any of claims 23 to 33, further comprising: receiving, by the network device, one or more multi-TRP coordination capabilities of the terminal's transmit / receive points from the terminal; determining, by means of the network device, the blind detection capability of the terminal's PDCCH based on one or more multi-TRP coordination capabilities, wherein the PDCCH blind detection capability is one of the one or more multi-TRP coordination capabilities, or each multi-TRP coordination capability is one of one or more candidate parameter values ​​and the value of the PDCCH blind detection capability is a candidate parameter value that does not exceed a maximum value of one or more multi-TRP coordination capabilities; and sending, by the network device, a first indication to the terminal, wherein the first indication is used to indicate the PDCCH blind detection capability.

35. The method according to any of claims 23 to 34, further comprising: receiving, by the network device, the second information from the terminal, wherein the second information is used to indicate the value of the blind detection capability of the terminal's PDCCH.

36. The method according to any of claims 23 to 26, comprising that, when a quantity of a plurality of cells is greater than a value of the blind detection capability of the PDCCH, the network device determines, a third quantity based on a blind detection capability of the terminal's PDCCH and a second quantity consists of: determining, by the network device, the third quantity based on a value of a set of parameters of the first cell, the second quantity, the number of CORESET groups in the first cell and a number of CORESET groups in the plurality of CRQRZn / ZZnZ / 3 / YILI cells.

37. The method according to any of claims 27 to 30, comprising that, when a quantity of a plurality of cells is greater than a value of the blind detection capability of the PDCCH, the network device determines, a fifth quantity based on the blind detection capability of the terminal's PDCCH and a fourth quantity consists of: determining, by the network device, the fifth quantity based on a value of a parameter set of the second cell, the fourth quantity, the number of CORESET groups in the second cell and a number of CORESET groups in the plurality of cells.

38. A communications apparatus, comprising: a communications module, configured to receive the first configuration information from a network device, wherein the first configuration information is used to indicate a configured number of candidate downlink physical control channel (PDCCH) locations in a time unit corresponding to a first CORESET group of the control resource pool, wherein: when the configured number is greater than a first number, the communications module is further configured to detect a PDCCH at candidate PDCCH locations whose number is less than or equal to the first number;or when the configured quantity is less than or equal to a first quantity, the communications module is further configured to detect a PDCCH in candidate PDCCH locations whose quantity is less than or equal to the configured quantity, wherein: the first quantity is a preset maximum quantity of candidate PDCCH locations in a unit of time corresponding to a CORESET group in a target cell and the first CORESET group is one of a plurality of CORESET groups in the target cell.; 39. The communications apparatus according to claim 38, comprising that the communications module is further configured to: receive the first information from the network device, wherein the first information is used to indicate the first CORESET group.

40. The communications apparatus according to claim 39, comprising that: a value of the first information is 0.

41. The communications apparatus according to any of claims 38 to 40, comprising that the target cell is one of a plurality of cells in which a terminal operates; the communications apparatus further comprises a processing module; CRQRZn / ZZnZ / 3 / YILI the processing module is configured to determine a third quantity based on a blind detection capability of the terminal's PDCCH and a second quantity, wherein the second quantity is a specified maximum number of candidate PDCCH locations in a time unit corresponding to a CORESET group in a first cell, the third quantity is a specified maximum number of candidate PDCCH locations in a time unit corresponding to the first cell, and the first cell comprises one or more cells that are in the plurality of cells and whose parameter sets have the same value;and the number of times the communications module blindly detects the PDCCH in a unit of time corresponding to each CORESET group in the first cell does not exceed the second and third amounts.

42. The communications apparatus according to claim 41, comprising that: the third quantity complies with the following formula: írtotal.slnl.p _ xrcap . z max.slot, / / z -^DL.p,multi-trp * 1 , xj DL,μ,single-trps / yz x-τDL,J ,nmlti-trp * 1 , xjDL.y,single-l 1V1 PDCCH — 1V cells '1V1 PDCCH ' ní^~^ cells y / cells cells / / =° where t0t9i5DL represents the third quantity, represents the detection capability at ^pdcobliegas of PDCCH, represents the second quantity, N^Lp'imi!Mrp represents a number of cells, in the first cell, for which a plurality of CORESET groups are configured, N^Lp's'ngletrp represents a number of cells, in the first cell, for which a CORESET group is configured, N^¿m“ltírp represents a number of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, N^¿'x,ngletrp represents a number of cells, in all cells, for which a CORESET group is configured, a sum of py Ν^ρ'ιη8ΐ<R'pes a total quantity of all cells and a value of n1 is determined based on the terminal capacity.

43. The communications apparatus according to claim 41, comprising that the third quantity complies with the following formula: t,totalrslot.p _ x τ-cap x zmax,slot, / í r •ecDL.p.multi-trp * ] , XJ DL.p,single-trps / χ- z χτ DL, j ,multi-trp * 1 , wDLj,™j / w 1V1 PDCCH — cells PDCCH '^^cells '^'^cells ' ¿^yí^celts rÍí^~í^cells / j=° where tota sot.represents the third quantity, -VíX represents the detection capability to 'líPDC> blind PDCCH, M¡^cch”“ represents the second quantity, N^wniitnrp represents a number of cells, in the first cell, for which a plurality of CORESET groups are configured) a quantity of a plurality of CORESET groups is n1, ^DL^,singietrP represents a number of cells, in the first cell, for which a CORESET group is configured, N^¿mu,tt'p represents a number of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, N^sin8le'rp represents a number of cells, in all cells, for which a CORESET group is configured and a sum of N^^ηη'M'ρ^ N^jj'>'le,ip is a total quantity of all cells.

44. The communications apparatus according to any of claims 41 to 43, comprising that: the number of times the terminal blindly detects the PDCCH in the time unit corresponding to the first cell does not exceed a product of the second quantity and a number of CORESET groups in the first cell.

45. The communications apparatus according to any of claims 38 to 44, comprising that the target cell is one of the plurality of cells in which the terminal operates; the communications apparatus further comprises a processing module; the processing module is configured to determine a fifth quantity based on the blind detection capability of the terminal's PDCCH and a fourth quantity, wherein the fourth quantity is a specified maximum number of non-overlapping control channel elements (CCEs) in a time unit corresponding to a CORESET group in a second cell, the fifth quantity is a maximum number of non-overlapping CCEs in a time unit corresponding to the second cell, and the second cell comprises one or more cells that are in the plurality of cells and whose parameter sets have the same value;and a quantity of non-overlapping CCEs detected by the communications module in a unit of time corresponding to each CORESET group in the second cell, does not exceed the fourth quantity and the fifth quantity.; 46. ​​The communications apparatus according to claim 45, comprising that: the fifth quantity fulfills the following formula: / 3 ^total.slot.p χτ-cap x-rinax^lot. / z / ν τ DL, / zj)»z / / / -tr / / i , DC.P'Single-npy / X ' / -κτ DL, j,multi-trp ι . τ OL·, ¡,si>igle-t PDCCH — ^cclls ' ^PDCCH ' cells cells ' n*-+^celís / . / =<> where CppccHOt'μ represents the fifth quantity, N^X represents the blind detection capability of PDCCH, maxs¡ot« represents the fourth quantity, NΜριΙΙμΊ' represents a CPDCCH quantity of cells, in the second cell, for which a plurality of CORESET groups are configured, A^^'^'^Te represents the quantity of cells, in the first cell, for which a CORESET group is configured, N^¿muMrp represents the quantity of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, represents the quantity of cells, in all cells, for which a configured CORESET group is configured, the sum of N^miMrpy N^r^P is the total quantity of all cells and the value of n1 is determined based on the terminal capacity.

47. The communications apparatus according to claim 45, comprising that: the fifth quantity fulfills the following formula: / 3 ^íutalpilot,p _ xrcap inax,slol, / ¿ ( xt OLjijnulti-írp * i XTDL, / / ,5wg / e-fr / ?\ / / XT OCJ ,mulli-lrp * i . vrDL, / ,.w / ig / ei PDCCH — JVcclls ' PDCCH ' UV <? / / s cells J cell.s ríL^^cells / . / =0 en donde Cpdcch0* μ representa la quinta cantidad, TV^Xrepresenta la capacidad de detección a ciegas de PDCCH, ™πχ.-ύGι,represents the fourth quantity, a PDCCH quantity of cells, in the second cell, for which a plurality of CORESET groups are configured, a quantity of a plurality of CORESET groups is n1, ^^'“''^''Terepresents the quantity of cells, in the first cell, for which a CORESET group is configured, ^^'^represents the quantity of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, N^'s,sletrprepresents the quantity of cells, in all cells, for which a CORESET group is configured and the sum of N^'miM'py N^¿sm8letrpes the total quantity of all cells.

48. The communications apparatus according to any of claims 45 to 47, comprising that the quantity of non-overlapping CCEs detected by the terminal in the time unit corresponding to the second cell does not exceed the product of the fourth quantity and the quantity of the CORESET group in the second cell. CRQRZn / ZZnZ / 3 / YILI 49. The communications apparatus according to claim 42, 43, 46 or 47, comprising: that a value of n1 is determined based on a terminal capability, wherein: the value of n1 is less than or equal to the second piece of information, the second piece of information is used to indicate a value of the blind detection capability of PDCCH and the second piece of information is 1 or 2.

50. The communications apparatus according to claim 49, comprising that the second information is information communicated by the terminal for each frequency band or combination of frequency bands.

51. The communications apparatus according to any of claims 41 to 50, comprising: the value of the blind detection capability of the terminal's PDCCH is a number of transmit / receive points corresponding to the plurality of cells; or the value of the blind detection capability of the terminal's PDCCH is my 1 <m<16.

52. The communications apparatus according to any of claims 41 to 51, comprising that the communications module is further configured to: send one or more multi-TRP coordination capabilities of the terminal to the network device, wherein the one or more multi-TRP coordination capabilities are used to determine the blind detection capability of the terminal's PDCCH; and receive a first indication from the network device, wherein the first indication is used to indicate the blind detection capability of the PDCCH, wherein: the blind detection capability of the PDCCH is one of the one or more multi-TRP coordination capabilities; or each multi-TRP coordination capability is one of one or more candidate parameter values ​​and the value of the blind detection capability of the PDCCH is a candidate parameter value that does not exceed a maximum value of one or more multi-TRP coordination capabilities.

53. The communications apparatus according to any of claims 41 to 52, comprising that the communications module is further configured to: send the second information to the network device, wherein the second information is used to indicate the value of the blind detection capability of PDCCH.

54. The communications apparatus according to any of claims 41 to 44, comprising that when a quantity of a plurality of cells is greater than a value of the blind detection capability of PDCCH, the processing module is configured CRQRZn / ZZnZ / 3 / YILI specifically to: determine the third quantity based on a value of a parameter set of the first cell, the second quantity, the number of CORESET groups in the first cell, and a number of CORESET groups in the plurality of cells.

55. The communications apparatus according to any of claims 45 to 48, comprising that, when a quantity of a plurality of cells is greater than a value of the blind detection capability of PDCCH, the processing module is specifically configured to: determine the fifth quantity based on a value of a parameter set of the second cell, the fourth quantity, the number of CORESET groups in the second cell, and a number of CORESET groups in the plurality of cells.

56. A communications apparatus, comprising: a processing module, configured to determine the first configuration information, wherein the first configuration information is used to indicate a configured number of candidate locations of the downlink physical control channel (PDCCH) in a time unit corresponding to a first CORESET group of the control resource pool, and the first CORESET group is one of a plurality of CORESET groups in a target cell; and a communications module, configured to send the first configuration information to a terminal.

57. The communications apparatus according to claim 56, comprising that the communications module is further configured such that: when the configured quantity is greater than a first quantity, a PDCCH is sent to candidate PDCCH locations whose quantity is less than or equal to the first quantity; or when the configured quantity is less than or equal to a first quantity, a PDCCH is sent to candidate PDCCH locations whose quantity is less than or equal to the configured quantity, wherein: the first quantity is a predetermined maximum number of candidate PDCCH locations in a time unit corresponding to a CORESET group in the target cell, and the first CORESET group is one of the plurality of CORESET groups in the target cell.

58. The communications apparatus according to claim 56 or 57, comprising further that the communications module is configured to: send the first information to the terminal, wherein the first information is used to indicate the first CORESET group. CRQRZn / ZZnZ / 3 / YILI 59. The communications apparatus according to claim 58, comprising that: a value of the first information is 0.

60. The communications apparatus according to any of claims 56 to 59, comprising that the target cell is one of a plurality of cells in which the terminal operates; and the processing module is further configured to: determine a third quantity based on a blind detection capability of the terminal's PDCCH and a second quantity, wherein the second quantity is a specified maximum number of candidate PDCCH locations in a time unit corresponding to a CORESET group in a first cell, the third quantity is a specified maximum number of candidate PDCCH locations in a time unit corresponding to the first cell, and the first cell comprises one or more cells that are in the plurality of cells and whose parameter sets have the same value;and determine the second configuration information based on the second quantity and the third quantity, wherein the second configuration information is used to configure a candidate PDCCH location for the terminal in the time unit corresponding to the first cell.; 61. The communications apparatus according to claim 60, comprising that: the third quantity fulfills the following formula: / 3 ir ιοιαΙ,Hoi,μ _ L / cap ir max.slot, / / ( xj DL,μ,multt-np * „1 , XJ DL,p,single-trp\ / X ' / xj OL.j ,muln-trp * „1 , XJ OL,iriingle-l 1¥1 PDCCH ; cclls ^PDCCII 1- cens / / / L / J=° where x ftots ,5ot represents the third quantity, represents the blind detection capability of PDCCH, represents the second quantity, j^DL^.muitptrp represents a number of cells, in the first cell, for which a plurality of CORESET groups are configured, N^L^'s'8letrp represents a number of cells, in the first cell, for which a CORESET group is configured, N^^mu,ttrp represents a number of cells, in all cells configured by the communications apparatus, for which a plurality of CORESET groups are configured, N^jstnslelrp represents a number of cells, in all cells, for which a CORESET group is configured, a sum of N^miMrpy N^¿sinsletrp is a total number of all cells and a value of n1 is determined based on the capacity of the terminal. CRQRZn / ZZnZ / 3 / YILI.

62. The communications apparatus according to claim 60, comprising that the third quantity complies with the following formula: / 3 t, total.slot,i _ Arcap iz max,slot. / iz vlOCpjnulti-trp * , τ DL.fi.smgle-ñ-p\ / V-1 ( τ OL.J MultHrp * i -kjDL.y.wn^te- / 1V1 PDCCH — JV cells PDCCH ' V 1Ncells cells cells nL cells / 7=0 where tota.£Ot.represents the third quantity, tV^ represents the detection capability at '^PDO blinds of PDCCH, M^cch^ represents the second quantity, represents a number of cells, in the first cell, for which a plurality of CORESET groups are configured, N^Lp's>nsle,fp represents a number of cells, in the first cell, for which a CORESET group is configured, a number of a plurality of CORESET groups is n1, N^multtrp represents a number of cells, in all cells configured by a network device, for which a plurality of CORESET groups are configured, reRepresents a number of cells, in all cells, for which a CORESET group is configured and a sum of N^¿muMrpy N^¿','glel'p is a total number of all cells.

63. The communications apparatus according to any of claims 60 to 62, comprising that: the number of times the terminal blindly detects the PDCCH in the time unit corresponding to the first cell does not exceed a product of the second quantity and a number of CORESET groups in the first cell.

64. The communications apparatus according to any of claims 56 to 63, comprising that the target cell is one of the plurality of cells in which the terminal operates; and the processing module is further configured to: determine a fifth quantity based on the blind detection capability of the terminal's PDCCH and a fourth quantity, wherein the fourth quantity is a specified maximum quantity of non-overlapping control channel element CCEs in a time unit corresponding to a CORESET group in a second cell, the fifth quantity is a maximum quantity of non-overlapping CCEs in a time unit corresponding to the second cell, and the second cell comprises one or more cells that are in the plurality of cells and whose parameter sets have the same value;and determine the third configuration information based on the fourth quantity and the fifth quantity, wherein the third configuration information is used to configure a maximum quantity of non-overlapping CCEs for the terminal in the time unit corresponding to the second cell.

65. The communications apparatus according to claim 64, comprising that: the fifth quantity fulfills the following formula: / 3 ^total,slot,p \fcaP z^max,slot, / / ( -kiDL,μ,imi / ti-tip i . xr DCpddngle-ti'px / X ' / xr ΏY., ¡ jmdti-trp i . xi DL·, / ,single-i PDCCH — -^cclls * CPDCCH * 1N cells ni~^^cells ' Z^^^cells ní ceils / J=° where ^pdcch01' A represents the fifth quantity, represents the blind detection capability of PDCCH, ™η..-.-0Gι, represents the fourth quantity, represents a CPDCCH quantity of cells, in the second cell, for which a plurality of CORESET groups are configured, ^^'''^''Te represents the quantity of cells, in the first cell, for which a CORESET group is configured, N^jmMrp represents the quantity of cells, in all cells configured by the network device, for which a plurality of CORESET groups are configured, N^s'nglet'p represents the quantity of cells, in all cells, for which a configured CORESET group is configured, the sum of N^¿'multtrpy N^js'n8,etrp is the total quantity of all cells and the value of n1 is determined based on the capacity of the terminal.

66. The communications apparatus according to claim 64, comprising that: the fifth quantity fulfills the following formula: / 3 _ ircap ^max.slot. / i < AJ DL,p,imilti-tip * 1 , M DC,p,smgle-lrp\ / X= ( xr DL, j,mulli-trp * 1 , XJ DL, j ,smgle-l PDCCH — cclls ''-'PDCCH cells ' cells / 7=0 where ^pdcch^'^ represents the fifth quantity, xiX represents the blind detection capability of PDCCH, ma;. .-^represents the fourth quantity, ^L^^mitpirprepresents a PDCCH quantity of cells, in the second cell, for which a plurality of CORESET groups are configured, a quantity of a plurality of CORESET groups is n1, τλζ^1'·''^77 represents the quantity of cells, in the first cell, for which a CORESET group is configured, ^f'^represents the quantity of cells, in all cells configured by the network device, for which a plurality of CRQRZn / ZZnZ / 3 / YILI CORESET groups are configured, represents the quantity of cells, in all cells, for which a CORESET group is configured and the sum of N^¡¿mu,tírpy N^¿smsletrp is the total quantity of all cells.

67. The communications apparatus according to any of claims 64 to 66, comprising that a quantity of non-overlapping CCEs detected by the terminal in the time unit corresponding to the second cell, does not exceed a product of the fourth quantity and a quantity of CORESET group in the second cell.

68. The communications apparatus according to claim 61, 62, 65 or 66, comprising: that a value of n1 is determined based on a terminal capability consisting of: the value of n1 is less than or equal to the second piece of information, the second piece of information is used to indicate a value of the blind detection capability of PDCCH and the second piece of information is 1 or 2.

69. The communications apparatus according to claim 66, comprising that the second information is information communicated by the terminal for each frequency band or combination of frequency bands.

70. The communications apparatus according to any of claims 60 to 69, comprising: the value of the blind detection capability of the terminal's PDCCH is a number of transmit / receive points corresponding to the plurality of cells; or the value of the blind detection capability of the terminal's PDCCH is my 1 <m<16.

71. The communications apparatus according to any of claims 60 to 70, comprising that the communications module is further configured to: receive one or more multi-terminal transmit / receive point TRP coordination capabilities from the terminal; the processing module is further configured to: determine the terminal's PDCCH blind detection capability based on one or more multi-TRP coordination capabilities, wherein the PDCCH blind detection capability is one of the one or more multi-TRP coordination capabilities, or each multi-TRP coordination capability is one of one or more candidate parameter values ​​and the value of the PDCCH blind detection capability is a candidate parameter value not exceeding a maximum value of one or more multi-TRP coordination capabilities;and the communications module is further configured to: send a first indication to the terminal, where the first indication is used to CRQRZn / ZZnZ / 3 / YILI to indicate the blind detection capability of PDCCH.; 72. The communications apparatus according to any of claims 60 to 71, comprising that the communications module is further configured to: receive the second information from the terminal, wherein the second information is used to indicate the value of the blind detection capability of the terminal's PDCCH.

73. The communications apparatus according to any of claims 60 to 72, comprising that when a quantity of a plurality of cells is greater than the value of the blind detection capability of PDCCH, the processing module is specifically configured to: determine the third quantity based on a value of a set of parameters of the first cell, the second quantity, the number of CORESET groups in the first cell, and a number of CORESET groups in the plurality of cells.

74. The communications apparatus according to any of claims 64 to 67, comprising that when a quantity of a plurality of cells is greater than a value of the blind detection capability of PDCCH, the processing module is specifically configured to: determine the fifth quantity based on a value of a parameter set of the second cell, the fourth quantity, the number of CORESET groups in the second cell, and a number of CORESET groups in the plurality of cells.

75. The communications apparatus according to any of claims 38 to 74, comprising that the communications module is a transceiver and the processing module is a processor.

76. A communications apparatus, comprising a processor and a communications interface, wherein: the communications interface is configured to support the communications apparatus in carrying out communication; and the processor can be configured to execute instructions, to implement the method according to any of claims 1 to 18.

77. A communications apparatus, comprising a processor and a communications interface, wherein: the communications interface can be configured to support the communications apparatus in carrying out communication; and the processor can be configured to execute instructions, to implement the method according to any of claims 19 to 37.

78. The communications apparatus according to claim 76 or 77, comprising that the communications apparatus is a chip or a chip system. CRQRZn / ZZnZ / 3 / YILI 79. A communications system, comprising the communications apparatus according to any of claims 38 to 55 or claim 75 and the communications apparatus according to any of claims 56 to 74 or claim 76.

80. A computer-readable storage medium, comprising that the computer-readable storage medium stores instructions and when the instructions are invoked and executed on a computer, the computer is enabled to perform the method according to any one of claims 1 to 37.

81. A computer program product, comprising a program or instructions, wherein when the program or instructions are executed on a computer, the method is performed according to any of claims 1 to 37.

82. A chip, comprising that the chip is coupled to a memory and configured to read and execute program instructions stored in the memory, for carrying out the method according to any one of claims 1 to 37.

83. An apparatus, comprising that the apparatus is configured to implement the method according to any of claims 1 to 37.

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