CN114731580A

CN114731580A - Method and device for detecting Physical Downlink Control Channel (PDCCH)

Info

Publication number: CN114731580A
Application number: CN201980102415.0A
Authority: CN
Inventors: 高宽栋; 樊波; 黄煌
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2022-07-08
Anticipated expiration: 2039-11-19
Also published as: CN114731580B; WO2021097648A1

Abstract

The application provides a method for detecting a Physical Downlink Control Channel (PDCCH), which is beneficial to reducing the detection loss of the PDCCH for blind detection of terminal equipment. For example, the terminal device receives indication information, where the indication information is used to indicate that the terminal device detects the configuration of the N control resource set groups used by the PDCCH in the first time unit; and determining a second time unit according to the PDCCH detected in the first time unit, and detecting the PDCCH by using the configuration of the M control resource set groups in the second time unit by the terminal equipment. The configuration of the control resource set group comprises the number of the control resource set groups and/or the index of the control resource set groups; n is a positive integer greater than or equal to 1, and M is greater than N. The number of the control resource set groups used by the terminal equipment for the blind detection of the PDCCH in the first time unit is smaller than the number of the control resource set groups used for the detection of the PDCCH in the second time unit, so that the detection loss of the terminal equipment for the blind detection of the PDCCH is reduced.

Description

Method and device for detecting Physical Downlink Control Channel (PDCCH)

Technical Field

The present application relates to the field of wireless communication, and more particularly, to a method and apparatus for detecting a physical downlink control channel.

Background

In the application scenario of the 5G new air interface (NR), a high-reliability and Low-Latency communication (URLLC) service represents a class of services with Low Latency and high reliability requirements. In order to improve the requirements of reliability and low time delay, data can be transmitted and received in different beam ranges and different Transmission and Reception Sites (TRPs), so that the terminal device receives data of the network device in different directions, and the reliability of data transmission is improved. However, in a multi-station transmission scenario, the terminal device may need to transmit two or more Physical Downlink Control Channels (PDCCHs) in one time slot, so that the number of blind detection PDCCHs is greatly increased, thereby increasing detection power consumption of the blind detection of the terminal device.

Therefore, aiming at the problems existing in the prior art, the detection power consumption of the blind detection of the terminal equipment is reduced, and the problem to be solved is urgent.

Disclosure of Invention

The application provides a method and a device for detecting a Physical Downlink Control Channel (PDCCH), so that the detection power consumption of blind detection of terminal equipment is reduced.

In a first aspect, a method for detecting a Physical Downlink Control Channel (PDCCH) is provided. The method may be executed by the terminal device, or may also be executed by a chip configured in the terminal device, which is not limited in this application.

Specifically, the method comprises the following steps: receiving indication information, wherein the indication information is used for indicating a terminal device to detect the configuration of N control resource set groups used by a Physical Downlink Control Channel (PDCCH) in a first time unit;

determining a second time unit according to the PDCCH detected in the first time unit, wherein the terminal equipment detects the PDCCH in the second time unit by using the configuration of M control resource set groups;

wherein the configuration of the control resource set group comprises the control resource set group number and/or the control resource set group index; n is a positive integer greater than or equal to 1, and M is greater than N.

Therefore, in the embodiment of the present application, the number of control resource set groups used by the terminal device in the blind detection of the PDCCH in the first time unit is smaller than the number of control resource set groups used in the detection of the PDCCH in the second time unit, so that the detection loss of the terminal device in the blind detection of the PDCCH is reduced.

With reference to the first aspect, in some possible implementations, the first time unit is turned on at a time that is at least one of:

the terminal equipment starts to detect the time of a PDCCH and the time of a WUS in an on duration timer;

the moment when the first time unit ends is at least one of the following:

the method comprises the steps of detecting the PDCCH scrambled by a first cell radio network temporary identifier C-RNTI, detecting the position of the PDCCH special for the terminal equipment, detecting X symbols or time slots after the position of the PDCCH, detecting the time when the terminal equipment stops receiving the PDCCH, and detecting the time when a discontinuous reception DRX period is finished.

With reference to the first aspect, in some possible implementations, a time when the second time unit is started is a time when the first time unit is ended;

and the moment when the second time unit is finished is the moment when the terminal equipment starts deep sleep.

With reference to the first aspect, in some possible implementations, the value of X is a partial or total value of 1,2,3,4,5,6,7, 8.

With reference to the first aspect, in some possible implementations, the indication information includes at least one of: a wakeup signal WUS, a PDCCH in the last discontinuous reception DRX period, a channel state indication reference signal CSI-RS, a synchronization signal block SSB, a physical downlink control channel PDCCH, a physical downlink shared channel PDSCH, MAC control element MAC-CE signaling and radio resource control RRC signaling.

With reference to the first aspect, in some possible implementations, before receiving the indication information, configuration information is received, where the configuration information includes at least one of: the control resource set CORESET group index, the control resource set CORESET group number, the default control resource set CORESET group number and the default control resource set CORESET group index.

With reference to the first aspect, in some possible implementations, the indicating information is used to indicate, by the terminal device, that the configuration of the control resource set group used by the physical downlink control channel PDCCH is detected in the first time unit, and includes:

the indication information indicates the configuration of the control resource set group as the control resource set group number and the control resource set group index; or the like, or, alternatively,

the indication information indicates the configuration of the control resource set group as the control resource set group number, the configuration information configures the control resource set group index; or the like, or, alternatively,

the indication information indicates the configuration of the control resource set group as the control resource set group index, and the configuration information configures the number of the control resource set groups.

With reference to the first aspect, in some possible implementations, a second time unit is determined according to the PDCCH detected in the first time unit, and the second time unit may further be determined according to at least one of the following:

a Discontinuous Reception (DRX) period, a next Discontinuous Reception (DRX) period, the duration of a next on duration Timer (Onduttimer), the duration of an inactive Timer (inactive Timer) plus a partial on duration Timer (Onduttimer), and the time from the beginning of receiving the PDCCH to the end of receiving the PDCCH by the terminal equipment.

In a second aspect, the present application provides a method for detecting a physical downlink control channel PDCCH. The method may be performed by a network device, or may be performed by a chip configured in the network device, which is not limited in this application.

Specifically, the method comprises the following steps: sending indication information, wherein the indication information is used for indicating the configuration of N control resource set groups used by a network device for sending a Physical Downlink Control Channel (PDCCH) in a first time unit;

determining a second time unit according to the PDCCH sent in the first time unit, wherein the network equipment sends the configuration of the M control resource set groups in the second time unit;

With reference to the second aspect, in some possible implementations, the first time unit is turned on at a time that is at least one of:

starting the continuous timer Ondurationtimer and sending a WUS time of a wakeup signal;

the moment when the first time unit ends is at least one of the following:

and sending a PDCCH scrambled by a first cell radio network temporary identity (C-RNTI) in the persistence timer of the corresponding terminal equipment by using the configuration of the N control resource set groups, sending the PDCCH position special for the corresponding terminal equipment by using the configuration of the N control resource set groups, sending X symbols or time slots after the PDCCH position is sent by using the configuration of the N control resource set groups, not sending the PDCCH of the terminal equipment in a DRX period by using the configuration of the N control resource set groups, and ending the discontinuous reception DRX period.

With reference to the second aspect, in some possible implementations, a time when the second time unit is started is a time when the first time unit is ended;

and the moment when the second time unit is finished is the moment when the PDCCH is not transmitted in the DRX period.

With reference to the second aspect, in some possible implementations, the value of X is a partial or total value of 1,2,3,4,5,6,7, 8.

With reference to the second aspect, in some possible implementations, the indication information includes at least one of:

a wakeup signal WUS, a PDCCH in a last discontinuous reception DRX period, a channel state indication reference signal CSI-RS, a synchronous signal block SSB, a physical downlink control channel PDCCH, a physical downlink shared channel PDSCH, MAC control element MAC-CE signaling and radio resource control RRC signaling.

With reference to the second aspect, in some possible implementations, before sending the indication information, sending configuration information, where the configuration information includes at least one of:

the control resource set CORESET group index, the control resource set CORESET group number, the default control resource set CORESET group number and the default control resource set CORESET group index.

With reference to the second aspect, in some possible implementations, the indicating information is used to indicate, by the network device, configuration of the control resource set group used by the network device to transmit the physical downlink control channel PDCCH in the first time unit, and includes:

the indication information indicates the configuration of the control resource set group as the number of the control resource set groups, the configuration information configuring the control resource set group index; or the like, or, alternatively,

With reference to the second aspect, in some possible implementations, a second time unit is determined according to the PDCCH transmitted in the first time unit, and the second time unit may further be determined according to at least one of the following:

the method comprises the steps of receiving a Discontinuous Reception (DRX) cycle, a next Discontinuous Reception (DRX) cycle, the duration of a next on-duration Timer (Onduttimer), the duration of an inactive Timer (inactive Timer) plus a partial on-duration Timer (Onduttimer), and starting from the time when a DRX cycle 1 of a terminal device is on to the time when a network device does not send a Physical Downlink Control Channel (PDCCH) in a DRX cycle 2 of the terminal device.

In a third aspect, a communication device is provided, which comprises various means or units for performing the method of any one of the possible implementations of the first aspect.

In a fourth aspect, a communications apparatus is provided that includes a processor. The processor is coupled to the memory and is operable to execute instructions in the memory to implement the method of any one of the possible implementations of the first aspect. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface.

In one implementation, the communication device is a terminal device. When the communication device is a terminal device, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the communication device is a chip configured in the terminal equipment. When the communication device is a chip configured in a terminal device, the communication interface may be an input/output interface.

Alternatively, the transceiver may be a transmit-receive circuit. Alternatively, the input/output interface may be an input/output circuit.

In a fifth aspect, a communication device is provided, which comprises various modules or units for performing the method of any one of the possible implementations of the second aspect.

In a sixth aspect, a communications apparatus is provided that includes a processor. The processor is coupled to the memory and is operable to execute the instructions in the memory to implement the method of any one of the possible implementations of the second aspect. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface.

In one implementation, the communication device is a network device. When the communication device is a network device, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the communication device is a chip configured in the network device. When the communication device is a chip configured in a network device, the communication interface may be an input/output interface.

In a seventh aspect, a processor is provided, including: input circuit, output circuit and processing circuit. The processing circuit is configured to receive a signal via the input circuit and transmit a signal via the output circuit, so that the processor performs the method of the first aspect or the second aspect, and any one of the possible implementations of the first aspect or the second aspect.

In a specific implementation process, the processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, various logic circuits, and the like. The input signal received by the input circuit may be received and input by, for example and without limitation, a receiver, the signal output by the output circuit may be output to and transmitted by a transmitter, for example and without limitation, and the input circuit and the output circuit may be the same circuit that functions as the input circuit and the output circuit, respectively, at different times. The embodiment of the present application does not limit the specific implementation manner of the processor and various circuits.

In an eighth aspect, a processing apparatus is provided that includes a processor and a memory. The processor is configured to read instructions stored in the memory and to receive signals via the receiver and transmit signals via the transmitter to perform the method of the first or second aspect and any possible implementation of the first or second aspect.

Optionally, the number of the processors is one or more, and the number of the memories is one or more.

Alternatively, the memory may be integral to the processor or provided separately from the processor.

In a specific implementation process, the memory may be a non-transitory (non-transitory) memory, such as a Read Only Memory (ROM), which may be integrated on the same chip as the processor, or may be separately disposed on different chips.

It will be appreciated that the associated data interaction process, for example, sending the indication information, may be a process of outputting the indication information from the processor, and receiving the capability information may be a process of receiving the input capability information from the processor. In particular, data output by the processor may be output to a transmitter and input data received by the processor may be from a receiver. The transmitter and receiver may be collectively referred to as a transceiver, among others.

The processing device in the above eighth aspect may be a chip, the processor may be implemented by hardware or may be implemented by software, and when implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated with the processor, located external to the processor, or stand-alone.

In a ninth aspect, there is provided a computer program product, the computer program product comprising: a computer program (which may also be referred to as code, or instructions), which when executed, causes a computer to perform the method of any of the possible implementations of the first or second aspect described above.

In a tenth aspect, a computer-readable medium is provided, which stores a computer program (which may also be referred to as code, or instructions) that, when executed on a computer, causes the computer to perform the method of any one of the possible implementations of the first or second aspect.

In an eleventh aspect, a communication system is provided, which includes the foregoing network device and terminal device.

Drawings

Fig. 1 is a schematic diagram of a communication system 100 suitable for use in a method of detecting PDCCH in an embodiment of the present application;

fig. 2 is a schematic diagram of a terminal-side system architecture 200 suitable for use in embodiments of the present application;

fig. 3 is a schematic diagram of a network-side system architecture 300 suitable for use in embodiments of the present application;

fig. 4 is a schematic diagram of a DRX cycle 400 provided in an embodiment of the present application;

fig. 5 is a schematic flow chart of a method 500 for detecting PDCCH provided by an embodiment of the present application, shown from the perspective of device interaction;

fig. 6 is a schematic flow chart of a method 600 for detecting PDCCH provided by another embodiment of the present application, shown from the perspective of device interaction;

fig. 7 is a schematic block diagram of a communication device provided by an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, a Universal Mobile Telecommunications System (UMTS), a fifth generation (5th generation, 5G) system, a New Radio (NR), or the like.

It should be understood that the network device in the communication system may be any device with wireless transceiving function or a chip disposed on the device, and the device includes but is not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (Node B, NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (e.g., Home evolved Node B, or Home Node B, HNB), BaseBand Unit (Base band Unit, BBU), Access Point (AP) in Wireless Fidelity (WIFI) system, etc., and may also be 5G, such as NR, gbb in system, or Transmission Point (TRP or TP), one or a group of antennas (including multiple antennas, NB, or a panel of Transmission points, such as a Network Node, or a BaseBand Node B, etc.), or a Distributed Unit (DU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. The gNB may also include a Radio Unit (RU). The CU implements part of the function of the gNB, and the DU implements part of the function of the gNB, for example, the CU implements Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP) layers, and the DU implements Radio Link Control (RLC), Medium Access Control (MAC) and Physical (PHY) layers. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as RRC layer signaling or PHCP layer signaling, may also be considered to be transmitted by the DU or by the DU + RU under this architecture. It will be understood that the network device may be a CU node, or a DU node, or a device comprising a CU node and a DU node. In addition, the CU may be divided into network devices in the access network RAN, or may be divided into network devices in the core network CN, which is not limited herein.

It should also be understood that terminal equipment in the communication system may also be referred to as User Equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user device. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical treatment (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. The embodiments of the present application do not limit the application scenarios.

To facilitate understanding of the embodiments of the present application, a brief description of several terms referred to in the present application will be given first.

1. Control resource set (CORESET): the control resource set may be a resource set for transmitting Downlink Control Information (DCI), and may also be referred to as a control resource region or a physical downlink control channel resource set.

For a network device, a control resource set may be understood as a set of resources that may be used for transmitting a Physical Downlink Control Channel (PDCCH); for the terminal device, the resource corresponding to the search space of the PDCCH of each terminal device belongs to the control resource set. In other words, the network device may determine, from the set of control resources, resources used for transmitting the PDCCH, and the terminal device may determine a search space of the PDCCH according to the set of control resources.

The control resource set may include time-frequency resources, for example, a segment of bandwidth in the frequency domain, or one or more sub-bands; may be one or more symbols in the time domain; one set of control resources may be continuous or discontinuous resource units, e.g., continuous Resource Blocks (RBs) or discontinuous RBs, in the time-frequency domain.

In the present application, different beam directions correspond to different control resource sets, and a plurality of control resource sets form a control resource set group. In the embodiment of the present application, the number and/or index of the control resource set CORESET groups may have different names, and may sometimes be referred to as the number and/or index of the control resource set CORESET pools, the number and/or index of the transmission configuration indication state TCI state groups, the number and/or index of the reference signal CSI-RS, the number and/or index of the synchronization signal blocks SSB, and the number and/or index of the beam groups.

Different numbers of control resource set groups and/or control resource set group indices in the following expressions correspond to different numbers of TRPs and/or TRP indices.

2. Configuration information or indication information: the configuration Information or the indication Information may be configured by the network device and transmitted to the terminal device, and the configuration Information may be carried in any one of a Physical Broadcast Channel (PBCH), Remaining Minimum System Information (RMSI), a System Information Block (SIB) 1, an SIB2, an SIB3, a Media Access Control element (MAC-CE), Downlink Control Information (DCI), Radio Resource Control (RRC), and System Information; the association relationship may be defined by a standard, or may be predetermined by the network device and the terminal device, or may be indicated by a wake-up signal (WUS). When the WUS is used for indication, when the WUS has one stage, TRP of the stage may be used for indication, and when the WUS has two or more stages, the network device may use WUS of the second stage for indication.

3. Synchronization signal block: the synchronization signal block may also be referred to as a synchronization signal/Physical broadcast channel (SS/PBCH block), or may be abbreviated as an SSB, and may include at least one of a PBCH (primary synchronization signal, PSS) and a Secondary Synchronization Signal (SSs).

In addition, in order to facilitate understanding of the embodiments of the present application, the following description is made.

First, in the present application, for convenience of description, when numbering is referred to, the numbering may be continued from 0. For example, the 0 th symbol in a certain slot may refer to the first symbol of the slot. Of course, the specific implementation is not limited thereto. For example, the numbers may be consecutively numbered from 1. For example, the 1 st symbol in a certain slot may also refer to the first symbol of the slot. Because the initial values of the numbers are different, the numbers corresponding to the same symbol in the time slot are also different.

It should be understood that the above descriptions are provided for convenience of describing the technical solutions provided by the embodiments of the present application, and are not intended to limit the scope of the present application.

Second, the first, second and various numerical numbers in the embodiments shown below are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application. E.g., a first time unit, a second time unit, wherein the first and second times are used to distinguish between different time units, etc.

Third, in the embodiments of the present application, "of", "corresponding" and "corresponding" may be sometimes used in a mixed manner, and it should be noted that the intended meaning is consistent when the difference is not emphasized. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, and c, may represent: a, or, b, or, c, or, a and b, or, a and c, or, b and c, or, a, b and c. Wherein a, b and c may be single or plural respectively.

Fourth, the association in this application may also be referred to as mapping, correspondence, correlation, assignment. When the random access period or the random access set is related to the paging occasion, the random access preamble may be sent to the terminal device of the paging occasion on the random access occasion in the random access period, and may be used to request a paging message, or report a beam, and when the random access occasion is related to the paging message or the paging indication in the SS/PBCH block or the paging occasion, it may also indicate that they have a quasi co-located (QCL) relationship, and may send or receive signals using the same delay spread, the same doppler spread, the same average gain, the same average delay, the same spatial domain parameter, or the same beam. The quasi co-location parameters include: at least one of doppler spread, doppler shift, average delay, delay spread, and spatial domain reception parameters. QCL relationships can be divided into four classes: QCL-type A' { Doppler shift, Doppler spread, average delay, delay spread }; QCL-type B' { Doppler shift, Doppler spread }; QCL-type C': Doppler shift, average delay }; QCL-TypeD { spatial domain reception parameter }.

For the convenience of understanding the embodiments of the present application, a communication system suitable for detecting a physical downlink control channel PDCCH provided in the embodiments of the present application will be described in detail below by taking the communication system shown in fig. 1 as an example. Fig. 1 shows a schematic diagram of a communication system 100 suitable for use in the communication method of the embodiments of the present application. As shown, the communication system 100 may include at least one terminal device, such as the terminal device 101 shown in the figure; the communication system 100 may also include at least one network device, such as network device # 1102 or network device # 2103 as shown.

Optionally, the communication system 100 may include one or more network devices, such as network device # 1102 and network device # 2103 as shown. The network device # 1102 and the network device # 2103 may be network devices in the same cell or network devices in different cells, which is not limited in this application. The figure shows an example in which network device # 1102 and network device # 2103 are located in the same cell, for example only.

In the communication system 100, the network device sends indication information to the terminal device, where the indication information indicates that the terminal device detects the PDCCH using the configurations of the N control resource set groups in a first time unit, determines a second time unit according to the PDCCH detected in the first time unit, and detects the PDCCH using the configurations of the M control resource set groups in the second time unit.

Fig. 2 is a schematic diagram of a terminal-side system architecture 200 according to an embodiment of the present application. As shown in fig. 2, the terminal device receives indication information, where the indication information is used to indicate that the terminal device detects, in a first time unit, a configuration of N control resource set groups used by a physical downlink control channel PDCCH; and determining a second time unit according to the PDCCH detected in the first time unit, and detecting the PDCCH by the terminal equipment in the second time unit by using the configuration of the M control resource set groups.

Fig. 3 is a schematic diagram of a network-side system architecture 300 according to an embodiment of the present application. As shown in fig. 3, a network device sends indication information, where the indication information is used to indicate configuration of N control resource set groups used by the network device to send a physical downlink control channel PDCCH in a first time unit; and determining a second time unit according to the PDCCH sent in the first time unit, and sending the configuration of the M control resource set groups by the network equipment in the second time unit.

A Discontinuous Reception (DRX) cycle is described in detail with reference to fig. 4. In the time domain, time is divided into successive DRX cycles (DRX cycles). The DRX cycle is a cycle for describing the repeated occurrence of the OnDurationTimer in the DRX mode. One DRX cycle consists of "OnDurationTimer" and "Opportunity for DRX". In the period of the OnDurationTimer, the UE monitors the PDCCH so that data of the downlink channel can be received. The time period of the "OnDurationTimer" may therefore also be referred to as the activation period. "Opportunity for DRX" may be a sleep time, and in this time period, the UE turns off the receiver, does not monitor the PDCCH, and does not receive data of the downlink channel to save power consumption. Therefore, the period of "Opportunity for DRX" may also be referred to as a sleep period. Once the terminal device detects a PDCCH, the terminal device starts an InactiveTimer (activation timer) in which the terminal device continues to detect the PDCCH.

The selection of the DRX Cycle involves a balance between reducing UE power consumption and traffic delay. On the one hand, a long DRX cycle is beneficial to reduce the power consumption of the UE. On the other hand, a short DRX cycle facilitates faster response when there is a new data transmission. The DRX long cycle is a necessary configuration of a system, and the short DRX cycle is an optional configuration. In other words, when the system adopts a long DRX cycle (long DRX cycle), the DRX cycle is a long DRX cycle, and the cycle length of the DRX cycle is the cycle length of the long DRX cycle. When the system adopts a short DRX Cycle, the DRX Cycle is the short DRX Cycle, and the Cycle length of the DRX Cycle is the Cycle length of the short DRX Cycle.

The embodiments of the present application will be described in further detail below based on the common aspects related to the embodiments of the present application described above.

In the embodiment of the application, under the scene of data transmission by multiple stations, the number of blind detection PDCCHs of the terminal equipment is greatly increased, so that the detection loss of the terminal equipment is increased. In order to reduce the detection loss of terminal equipment, a method for detecting a PDCCH is provided. For example, the terminal device receives indication information sent by the network device, where the indication information is used to indicate that the terminal device detects the configuration of N control resource set groups used by a physical downlink control channel PDCCH in a first time unit; determining a second time unit according to the PDCCH detected in the first time unit, and detecting the PDCCH by using the configuration of M control resource set groups in the second time unit by the terminal equipment; the configuration of the control resource set group comprises the number of the control resource set groups and/or the index of the control resource set groups; n is a positive integer greater than or equal to 1, and M is greater than N.

Fig. 5 is a schematic flow chart of a method 500 for detecting PDCCH provided in the embodiment of the present application, which is shown from the perspective of device interaction. As shown, the method 500 may include steps 510 through 520. The steps in method 500 are described in detail below.

It should be noted that the communication method provided in the present application may be applied to a wireless communication system, for example, the communication system 100 shown in fig. 1. Communication devices in a communication system may have wireless communication connections between them. For example, the terminal device 101 shown in fig. 1 may have a wireless communication connection relationship with the network device # 1102 and the network device # 2103, respectively, which is not limited in this application.

In step 510, the terminal device receives indication information from the network device. And the network equipment sends the indication information to the terminal equipment.

Specifically, the indication information is used to indicate that the terminal device detects the configuration of N control resource set groups used by the PDCCH in the first time unit, that is, the terminal device detects the PDCCH in the first time unit by using the configuration of the N control resource set groups, where N is a positive integer greater than or equal to 1. The configuration of the control resource set group may include not only the control resource set group number and/or the control resource set group index but also main TRP information or Default TRP (Default S-TRP) information. The default TRP information indicates that when the base station transmits a PDCCH using one TRP, the TRP indicates that the CORESET indicated by the CORESET higher layer parameter index is in a transmission state, and the terminal device only detects the CORESET indicated by the CORESET higher layer parameter index, as shown in fig. 6(a), the terminal device detects the PDCCH using the configuration of a single TRP (S-TRP), when detecting the PDCCH scrambled by the C-RNTI in the persistent timer, starts a plurality of TRPs (M-TRP) to detect the PDCCH, and the M-TRP enters a sleep period (Deep sleep) after detecting the PDCCH in the persistent timer.

The control resource set group in the embodiment of the present application may be a TRP, or may also be a CORESET pool, or may also be a CORESET, or may also be a beam group, or may also be a beam pool, or may also be a beam set, or may also be a reference signal group, or may also be a reference signal pool, or may also be a reference signal set, or may also be a CORESET high-level parameter, or may also be another TRP parameter. The control resource set group index may be a TRP index, or may also be a CORESET pool index, or may also be a CORESET index, or may also be a beam group index, or may also be a beam pool index, or may also be a beam set index, or may also be a reference signal group index, or may also be a reference signal pool index, or may also be a reference signal set index, or may also be a CORESET higher layer parameter index, or may also be an index representing a TRP index. The number of control resource set groups may be the number of TRPs, or may also be the number of CORESET pools, or may also be the number of CORESET sets, or may also be the number of beam groups, or may also be the number of beam pools, or may also be the number of beam sets, or may also be the number of reference signal groups, or may also be the number of reference signal pools, or may also be the number of reference signal sets, or may also be the number of CORESET higher layer parameters, or may also be the number of other TRP index-representing numbers. In the following description, a control resource set index and/or a control resource set number are selected for example, and the control resource set index may be replaced by a TRP index, a CORESET pool index, a CORESET index, a beam group index, a beam pool index, a beam set index, a reference signal group index, a reference signal pool index, or a reference signal set index; the number of control resource set groups may be replaced by the number of TRPs, the number of CORESET pools, the number of CORESET sets, the number of beam groups, the number of beam pools, the number of beam sets, the number of reference signal groups, the number of reference signal pools, the number of reference signal sets, the number of CORESET high-level parameters, and the number of other TRP indexes, which is not limited in the embodiments of the present application. The reference signal may be a channel state information reference signal, a synchronization signal block, or a demodulation reference signal.

Optionally, the terminal device receives indication information from the network device, and the network device sends the indication information to the terminal, where the indication information includes at least one of the following: the wakeup signal WUS is, as shown in fig. 6(a), a PDCCH in the last DRX cycle, as shown in fig. 6(b), a Channel state indication reference signal CSI-RS, a synchronization signal block SSB, a Physical Downlink control Channel PDCCH, a Physical Downlink Shared Channel (PDSCH), a MAC control element MAC-CE signaling, and a radio resource control RRC signaling.

Optionally, the wake-up signal in this embodiment may be a PDCCH signal, or may also be a sequence signal. When a PDCCH signal is used, a dedicated search space may be configured for the PDCCH. The period of the search space may be N1 times the DRX period, and N1 may be a value of some or all of 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 16; the period of the search space may also be a period of the search space, or may not be related to a period of DRX, and the period duration may also be configured separately, for example, the configuration period is a configuration in an existing search space, and the network device may configure or the protocol may specify a search space period associated with an OndurationTimer in a next DRX period, for example, a search space period closest to the OndurationTimer. In order to reduce the blind detection power consumption of the terminal device, the searchSpace may have a duration of 1 or 2 or 3 or 4 slots.

Optionally, the indication manner of the indication information may be an implicit indication manner or a display indication manner. The implicit indication may be a characteristic indication of the signal, for example, the configuration of the control resource group of the PDCCH for detecting the first time unit may be the configuration of the control resource group for detecting the WUS. The implicit indication manner may also be without indication information, and directly use the configuration information to determine the configuration of the control resource group of the PDCCH for detecting the first time unit, as shown in fig. 6 (b); the implicit indication method may be configured to determine the configuration of the control resource group for detecting the PDCCH in the first time slot by using information specified by the protocol without the indication information, as shown in fig. 6 (b). The indication mode of display may be indication by a field in signaling.

Optionally, the terminal device receives configuration information before receiving the indication information, where the configuration information includes at least one of the following: the control resource set CORESET group index, the control resource set CORESET group number, the default control resource set CORESET group number and the default control resource set CORESET group index. Optionally, the configuration information is configured by Radio Resource Control (RRC) RRC or Media Access Control (MAC) or DCI signaling.

Optionally, the indicating information is used to indicate the configuration of the control resource set group used by the network device to send the physical downlink control channel PDCCH in the first time unit, and includes:

the indication information indicates the configuration of the control resource set group as the number of the control resource set groups, the configuration information configuring the control resource set group index; or the like, or a combination thereof,

Optionally, the number and/or index of the control resource combination groups indicated by the indication information is the number and/or index of some or all control resource set groups configured in the configuration information.

In one possible embodiment, the configuration of the control resource set group is acted on by the indication information and the configuration information: the indication information indicates the configuration of the control resource set group as the number of the control resource set groups, and may be indicated using Y bits. Illustratively, the bit Y indicating the number of control resource set groups is equal to 1, that is, the number of control resource set groups is indicated by 1 bit, and when the bit value of the bit takes 0, the number of control resource set groups is 1; when the bit value of the bit takes 1, the number of the control resource set groups is 2; the control resource set index is configured by the configuration information. Illustratively, the network device and the terminal device pre-define information and/or number information for controlling the resource set group index. Optionally, the network device configures the control resource set index and/or the number information for the terminal device using the configuration information. Optionally, the terminal device reports information for controlling the resource set group index to the network device. Optionally, the configuration of the control resource set group may be associated with other signals, greatly saving signaling overhead. Optionally, the other signals may be a wakeup signal WUS, a PDCCH in the last DRX cycle, a CSI-RS, a synchronization signal block SSB, a PDCCH, a PDSCH, MAC control element MAC-CE signaling, and radio resource control RRC signaling. The association with other signals may be indicated as employing the exact same set of control resources or a partially identical set of control resources configuration.

In another possible embodiment, the configurations of the control resource set groups are all indicated by indication information, and the indication information indicates the configuration state of each control resource set group corresponding to the PDCCH in a bit mapping manner, that is, the indication information indicates the configurations of the control resource set groups, that is, the configuration of one control resource set group corresponds to one bit and/or the configuration of N control resource set groups corresponds to one bit.

For example, when the configuration of one control resource set group corresponds to one bit, it is assumed that there are two control resource set groups (respectively denoted as control resource set group 1 and control resource set group 2, control resource set group 1 associated TRP1, and control resource set group 2 associated TRP2), and the indication is performed using 2 bits, denoted as a first bit and a second bit. When the first bit indicates control resource set group 1 and the first bit value is 0, it indicates that control resource set group 1 has no corresponding PDCCH, that is, TRP1 does not send PDCCH; when the first bit indicates the control resource set group 1 and the first bit value is 1, it indicates that the control resource set group 1 has a corresponding PDCCH, i.e. TRP1 transmits the PDCCH. When the second bit indicates control resource set group 2 and the second bit value is 0, it indicates that control resource set group 2 has no corresponding PDCCH, that is, TRP2 does not send PDCCH; when the second bit indicates control resource set group 2 and the second bit value is 1, it indicates that control resource set group 2 has a corresponding PDCCH, i.e. TRP2 transmits the PDCCH. Alternatively, N may be any one or more of 2,3,4,5,6,7, 8.

Alternatively, when N control resource set groups correspond to one bit, it is assumed that there are two control resource set groups (respectively denoted as control resource set group 1 and control resource set group 2, control resource set group 1 associated TRP1, and control resource set group 2 associated TRP2), and the indication is performed using 1 bit, denoted as a first bit. The first bit indicates the control resource set group 1 and the control resource set group 2, and when the first bit value is 0, the first bit value indicates that the control resource set group 1 and the control resource set group 2 do not have corresponding PDCCHs, that is, neither TRP1 nor TRP2 transmits a PDCCH; when the first bit value is 1, it indicates that there is a corresponding PDCCH for control resource set group 1 and control resource set group 2, i.e., both TRP1 and TRP2 transmit PDCCHs. Alternatively, N may be any one or more of 2,3,4,5,6,7, 8.

Alternatively, when one bit is present for one control resource set group and one bit is present for N control resource set groups, for example, it is assumed that there are 3 control resource set groups (respectively denoted as control resource set group 1, control resource set group 2, and control resource set group 3, control resource set group 1 associated TRP1, control resource set group 2 associated TRP2, and control resource set group 3 associated TRP3), and 2 bits are used for indication, denoted as a first bit and a second bit. The first bit indicates the control resource set group 1 and the control resource set group 2, and when the first bit value is 0, the first bit value indicates that the control resource set group 1 and the control resource set group 2 do not have corresponding PDCCHs, that is, neither TRP1 nor TRP2 transmits a PDCCH; when the first bit value is 1, it indicates that there is a corresponding PDCCH for control resource set group 1 and control resource set group 2, i.e., both TRP1 and TRP2 transmit PDCCHs. The second bit indicates control resource set group 3, and when the second bit value is 0, the second bit indicates that control resource set group 3 has no corresponding PDCCH, that is, TRP3 does not transmit PDCCH; when the second bit value is 1, it indicates that the control resource set group 3 has a corresponding PDCCH, i.e., TRP3 transmits the PDCCH. Alternatively, N may be any one or more of 2,3,4,5,6,7, 8.

In another possible embodiment, the configuration of the control resource set group is indicated by the indication information, and may be indicated by Y bits, that is, the number of the control resource set groups and the control resource set group index are indicated by Y bits. For example, assuming that bit Y indicating the configuration of the control resource set group is equal to 2, 2 bits are respectively referred to as a first bit and a second bit. When the number of control resource set groups is 2, the first bit indicates the number of control resource set groups and the second bit indicates the control resource set group index. Optionally, when the number of control resource set groups is 1, the first bit indicating the number of control resource set groups is 0, and the second bit indicates control resource set group index 1 or control resource set group index 2. Alternatively, when the number of control resource set groups is 2, the indication may be performed by 1 bit, that is, the first bit indicates the number of control resource set groups, and at this time, the index of the control resource set group does not need to be indicated.

In another possible embodiment, the indication information indicates a configuration of the control resource set group as a control resource set group index, and the configuration information configures a number of the control resource set groups. For example, assume that there are two control resource set groups (denoted as control resource set group 1 and control resource set group 2, respectively), the default control resource set group is control resource set group 1, and the index of the control resource set group is indicated by 2 bits, denoted as the first bit and the second bit, respectively. The first bit indicates index 0 of control resource set group 1 and the second bit indicates index 1 of control resource set group 2. Optionally, the network device and the terminal device specify the default number of the control resource set groups through a protocol, and the network device indicates the control resource set group index through the indication information, that is, the control resource set group index indicated by the indication information is the same as the control resource set group corresponding to the PDCCH for sending data, thereby greatly saving signaling overhead.

In another possible implementation, the configuration information indicates a configuration of the control resource set group, and the configuration information configures a number and/or an index of the control resource set group. For example, the network device configures, by using the configuration information, the index and the number of the control resource groups for detecting the PDCCH in the second time unit, and also configures the number and/or the index of the control resource set groups for detecting the PDCCH in the first time unit, where the configured control resource set groups for detecting the control resource set groups of the PDCCH in the first time unit are configured. Assume that there are two control resource set groups (respectively denoted as control resource set group 1 and control resource set group 2) in the control resource group for detecting PDCCH in the second time unit, the control resource set group is defined as control resource set group 1, and indexes of the control resource set group are indicated by 2 bits and denoted as a first bit and a second bit, respectively. The first bit indicates index 0 of control resource set group 1 and the second bit indicates index 1 of control resource set group 2. Optionally, the network device and the terminal device specify a default control resource set group partial parameter through a protocol, the network device indicates a remaining partial parameter of the control resource set group through configuration information, wherein the partial parameter is an index, and the remaining partial parameter is a number; or part of the parameters are numbers, and the rest of the parameters are indexes, thereby greatly saving signaling overhead. Optionally, the network device and the terminal device define all parameters of a default control resource set group through a protocol, and the parameters include the number and the index, so that signaling overhead is greatly saved. Optionally, the network device indicates the index of the control resource set group through the configuration information.

Optionally, from the perspective of the terminal device, the first time unit is turned on at a time of at least one of: and the terminal equipment starts to detect the PDCCH time and the WUS time of the wake-up signal in the on duration timer. Optionally, the time of the first time end is at least one of: the method comprises the steps of detecting a PDCCH scrambled by a first cell radio network temporary identifier C-RNTI, detecting a PDCCH position special for the terminal equipment, detecting X symbols or time slots after the PDCCH position, detecting the time when the terminal stops receiving the PDCCH, and detecting the time when a discontinuous reception DRX period is finished. Optionally, the value of X is a partial or total value of 1,2,3,4,5,6,7,8, and X symbols or slots are used for reserving time to turn on multiple TRPs or switch TRPs for detection.

Optionally, from the perspective of a network device, the first time unit is turned on at least one of: the time when the continuous timer is started and the time when the wakeup signal WUS is transmitted. Optionally, the time when the first time unit ends is at least one of: and sending a PDCCH scrambled by a first cell radio network temporary identifier (C-RNTI) in the persistence timer of the corresponding terminal equipment by using the configuration of the N control resource set groups, sending the PDCCH position dedicated to the terminal equipment by using the configuration of the N control resource set groups, sending X symbols or time slots after the PDCCH position by using the configuration of the N control resource set groups, not sending the PDCCH of the terminal equipment in a DRX period by using the configuration of the N control resource set groups, and ending the discontinuous reception DRX period.

Optionally, the first time unit may be at least one of: a Discontinuous Reception (DRX) period, a next Discontinuous Reception (DRX) period, the duration of a next on duration Timer (Onduttimer), the duration of an inactive Timer (inactive Timer) plus a partial on duration Timer (Onduttimer), and the time from the beginning of receiving the PDCCH to the end of receiving the PDCCH by the terminal equipment.

In step 520, the terminal device determines a second time unit according to the PDCCH detected in the first time unit, and detects the PDCCH in the second time unit by using the configurations of M control resource set groups, where M is greater than N. And the network equipment determines a second time unit according to the PDCCH sent in the first time unit and sends the configuration of M control resource set groups in the second time unit, wherein M is larger than N.

Specifically, the terminal device determines the second time unit according to the PDCCH detected by the first time unit, that is, determines the time when the second time unit is started according to the time when the first time unit ends, or determines the time when the second time unit is started according to the time when X symbols or time slots after the PDCCH position is detected. And the terminal equipment detects the PDCCH by using the configuration of M control resource set groups in a second time unit, wherein the configuration of the M control resource set groups is the configuration of a control resource set group corresponding to TRP of the PDCCH in a default mode.

Optionally, from the perspective of the terminal device, the time when the second time unit is started is the time when the first time unit is ended; and the moment when the second time unit is finished is the moment when the terminal equipment starts to sleep or the moment when the terminal equipment does not detect the PDCCH. Optionally, the second time unit is determined according to the PDCCH detected in the first time unit, and the second time unit may also be determined according to at least one of the following: the method comprises the steps of receiving a Discontinuous Reception (DRX) cycle, a next Discontinuous Reception (DRX) cycle, the duration of a next on-duration Timer (Onductortimer), the duration of an inactive Timer (inactive Timer) plus a part of the Onductortimer, and the time from the beginning of receiving the Physical Downlink Control Channel (PDCCH) to the end of receiving the PDCCH.

Optionally, from the perspective of the network device, the time when the second time unit is started is the time when the first time unit is ended; and the moment when the second time unit is finished is the moment when the PDCCH is not transmitted in the DRX period. Optionally, the second time unit is determined according to the PDCCH detected in the first time unit, and the second time unit may also be determined according to at least one of the following: the method comprises the steps of receiving a Discontinuous Reception (DRX) cycle, a next Discontinuous Reception (DRX) cycle, the duration of a next on-duration Timer (Onduttimer), the duration of an inactive Timer (inactive Timer) plus a partial on-duration Timer (Onduttimer), and starting from the time when a DRX cycle 1 of a terminal device is on to the time when a network device does not send a Physical Downlink Control Channel (PDCCH) in a DRX cycle 2 of the terminal device.

Illustratively, as shown in fig. 6(c), the second time unit is determined according to the duration of the inactivity Timer inactive Timer plus the partial duration Timer onduration Timer, wherein the duration of the partial duration Timer onduration Timer is the time after the M-TRP is turned on.

Optionally, DRX cycle 1 and DRX cycle 2 may be equal or unequal.

Alternatively, the network device may also use an indication signal to indicate the end of a single TRP (S-TRP) and/or the turning on of multiple TRPs (M-TRPs), for example, a go-to-sleep signal (GTS) to indicate the end of S-TRP or the turning on of M-TRP or the end of M-TRP or a Downlink Control Information (DCI) to indicate the end of S-TRP or the turning on of M-TRP or the end of M-TRP. Illustratively, as shown in FIG. 6(d), the end of M-TRP is indicated using a GTS signal. Optionally, the indication signal may also be a MAC-CE signal, a sequence signal.

Optionally, the terminal device detects the PDCCH by using the configuration of the control resource set group associated with a single TRP, and when the terminal device detects the PDCCH scrambled by a cell radio network temporary identifier (C-RNTI), it is assumed that the network device performs a handover of the TRP, where the handover may be performed from one TRP to another TRP, that is, the terminal device detects the PDCCH by using the configuration of the control resource set group associated with the TRP after the handover; or switching from one TRP to multiple TRPs, that is, the terminal device uses the configuration of multiple control resource set groups associated with the multiple TRPs after switching to complete the detection of PDCCH. Optionally, when the terminal device detects that there are no multiple TRPs to transmit the PDCCH in X symbols or time slots after the PDCCH scrambled by one C-RNTI, that is, X symbols or time slots after the PDCCH scrambled by the C-RNTI is detected for reserving time to turn on multiple TRPs or switch the TRPs to detect the PDCCH.

Optionally, the GTS signal may be a sequence signal or a PDCCH signal. Illustratively, when the GTS signal is a DCI signal, the GTS signal may scramble a Cyclic Redundancy Code (CRC) of the DCI using the C-RNTI. The GTS signal indicates the terminal device to sleep, and may indicate the length of time the terminal device is asleep. The time starting position indicating sleep may be a time domain resource end position of the GTS signal, and the duration may be specified by the GTS signal, e.g., indicated by a field in the GTS. Optionally, the time domain field is multiplexed for indication. Optionally, the network device may add a field in the DCI to indicate whether the DCI is a GTS signal.

For example, when the DCI is a GTS signal, the terminal device does not detect a PDCCH between a Physical Downlink Shared Channel (PDSCH) scheduled from the DCI to the DCI; when the DCI is not a GTS signal, the terminal device detects a PDCCH from the DCI to the DCI-scheduled PDSCH. Optionally, when the DCI signal is a GTS signal, the terminal device does not detect the PDCCH from the DCI to the specified time; when the DCI signal is not a GTS signal, the terminal apparatus detects the PDCCH from the DCI to a specified time.

Specifically, the specified time is the time carried by the GTS. Optionally, the specified time is a time of DCI scheduled PDSCH or a periodic time or other time.

The time may be 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19 slots/symbols/subframes/frame, may be configured by Radio Resource Control (RRC) signaling, may be configured by MAC-CE, may be configured by Inactive-Timer, or may be other times, which is not limited herein.

The method provided by the embodiment of the present application is described in detail above with reference to fig. 5 and 6. Hereinafter, a communication apparatus according to an embodiment of the present application will be described in detail with reference to fig. 7.

Fig. 7 is a schematic block diagram of a communication device provided in an embodiment of the present application. As shown, the communication device 1000 may include a communication unit 1100 and a processing unit 1200.

In one possible design, the communication apparatus 1000 may correspond to the terminal device in the above method embodiment, and may be, for example, the terminal device or a chip configured in the terminal device.

Specifically, the communication apparatus 1000 may correspond to the terminal device in the method 500 according to the embodiment of the present application, and the communication apparatus 1000 may include a unit for executing the method executed by the terminal device in the method 500 in fig. 5. Also, the units and other operations and/or functions described above in the communication apparatus 1000 are respectively for implementing the corresponding flow of the method 500 in fig. 5.

Wherein, when the communication device 1000 is used to execute the method 500 in fig. 5, the communication unit 1100 may be used to execute the step 510 in the method 500, and the processing unit 1200 may be used to execute the step 520.

It should be understood that the specific processes of the units for executing the corresponding steps are already described in detail in the above method embodiments, and therefore, for brevity, detailed descriptions thereof are omitted.

It should also be understood that when the communication apparatus 1000 is a network device, the communication unit in the communication apparatus 1000 may correspond to the transceiver 3200 in the network device 3000 shown in fig. 9, and the processing unit 1200 in the communication apparatus 1000 may correspond to the processor 3100 in the network device 3000 shown in fig. 9.

It should also be understood that when the communication device 1000 is a chip configured in a network device, the communication unit 1100 in the communication device 1000 may be an input/output interface.

Fig. 8 is a schematic structural diagram of a terminal device 2000 according to an embodiment of the present application. The terminal device 2000 can be applied to the system shown in fig. 1, and performs the functions of the terminal device in the above method embodiment.

As shown in fig. 8, the terminal device 2000 includes a processor 2010 and a transceiver 2020. Optionally, the terminal device 2000 further comprises a memory 2030. Wherein the processor 2010, the transceiver 2020, and the memory 2030 are interconnected via the interconnection path for communicating control and/or data signals, the memory 2030 is used for storing a computer program, and the processor 2010 is used for retrieving and executing the computer program from the memory 2030 to control the transceiver 2020 to transmit and receive signals. Optionally, the terminal device 2000 may further include an antenna 2040, configured to transmit uplink data or uplink control signaling output by the transceiver 2020 by using a wireless signal.

The processor 2010 and the memory 2030 may be combined into a processing device, and the processor 2010 is configured to execute the program codes stored in the memory 2030 to achieve the above functions. In particular, the memory 2030 may be integrated with the processor 2010 or may be separate from the processor 2010. The processor 2010 may correspond to the processing unit in fig. 7.

The transceiver 2020 may correspond to the communication unit in fig. 7, and may also be referred to as a transceiver unit. The transceiver 2020 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Wherein the receiver is used for receiving signals, and the transmitter is used for transmitting signals.

It should be understood that terminal device 2000 shown in fig. 8 is capable of implementing various processes involving the terminal device in the method embodiment shown in fig. 5. The operations and/or functions of the modules in the terminal device 2000 are respectively to implement the corresponding flows in the above-described method embodiments. Specifically, reference may be made to the description of the above method embodiments, and the detailed description is appropriately omitted herein to avoid redundancy.

The processor 2010 may be configured to perform the actions described in the preceding method embodiments that are implemented within the terminal device, and the transceiver 2020 may be configured to perform the actions described in the preceding method embodiments that the terminal device transmits to or receives from the network device. Please refer to the description of the previous embodiment of the method, which is not repeated herein.

Optionally, the terminal device 2000 may further include a power supply 2050 for supplying power to various devices or circuits in the terminal device.

In addition, in order to further improve the functions of the terminal device, the terminal device 2000 may further include one or more of an input unit 2060, a display unit 2070, an audio circuit 2080, a camera 2090, a sensor 2100, and the like, and the audio circuit may further include a speaker 2082, a microphone 2084, and the like.

Fig. 9 is a schematic structural diagram of a network device provided in the embodiment of the present application, which may be a schematic structural diagram of a base station, for example. The base station 3000 can be applied to the system shown in fig. 1, and performs the functions of the network device in the above method embodiment.

As shown in fig. 9, the base station 3000 may include one or more radio frequency units, such as a Remote Radio Unit (RRU) 3100 and one or more baseband units (BBUs) (also referred to as digital units, DUs) 3200. The RRU 3100 may be referred to as a transceiver unit and corresponds to the communication unit 1200 in fig. 7. Alternatively, the transceiving unit 3100 may also be referred to as a transceiver, transceiving circuit, or transceiver, etc., which may include at least one antenna 3101 and a radio frequency unit 3102. Alternatively, the transceiving unit 3100 may include a receiving unit and a transmitting unit, the receiving unit may correspond to a receiver (or receiver, receiving circuit), and the transmitting unit may correspond to a transmitter (or transmitter, transmitting circuit). The RRU 3100 part is mainly used for transceiving and converting radio frequency signals to baseband signals, for example, for sending indication information to a terminal device. The BBU 3200 section is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 3100 and the BBU 3200 may be physically disposed together or may be physically disposed separately, i.e. distributed base stations.

The BBU 3200, which is a control center of the base station and may also be referred to as a processing unit, may correspond to the processing unit 1100 in fig. 7, and is mainly used for performing baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and the like. For example, the BBU (processing unit) may be configured to control the base station to perform an operation procedure related to the network device in the foregoing method embodiment, for example, to generate the foregoing indication information.

In an example, the BBU 3200 may be formed by one or more boards, and the boards may collectively support a radio access network of a single access system (e.g., an LTE network), or may respectively support radio access networks of different access systems (e.g., an LTE network, a 5G network, or other networks). The BBU 3200 also includes a memory 3201 and a processor 3202. The memory 3201 is used to store necessary instructions and data. The processor 3202 is used for controlling the base station to perform necessary actions, for example, for controlling the base station to execute the operation flow related to the network device in the above method embodiment. The memory 3201 and processor 3202 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

It should be appreciated that base station 3000 shown in fig. 9 is capable of implementing various processes involving network devices in the method embodiment of fig. 5. The operations and/or functions of the respective modules in the base station 3000 are respectively for implementing the corresponding flows in the above-described method embodiments. Specifically, reference may be made to the description of the above method embodiments, and the detailed description is appropriately omitted herein to avoid redundancy.

BBU 3200 as described above can be used to perform actions described in previous method embodiments as being implemented internally by a network device, while RRU 3100 can be used to perform actions described in previous method embodiments as being sent by or received from a terminal device by a network device. Please refer to the description of the previous embodiment of the method, which is not repeated herein.

The embodiment of the application also provides a processing device, which comprises a processor and an interface; the processor is used for executing the communication method in the method embodiment.

It should be understood that the processing means may be a chip. For example, the processing device may be a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD), or other integrated chips.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here.

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

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

According to the method provided by the embodiment of the present application, the present application further provides a computer program product, which includes: computer program code which, when run on a computer, causes the computer to perform the method in the embodiment shown in fig. 5.

According to the method provided by the embodiment of the present application, the present application also provides a computer readable medium storing program code, which when run on a computer, causes the computer to execute the method in the embodiment shown in fig. 5.

According to the method provided by the embodiment of the present application, the present application further provides a system, which includes the foregoing one or more terminal devices and one or more network devices.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

The network device in the foregoing device embodiments completely corresponds to the terminal device and the network device or the terminal device in the method embodiments, and the corresponding module or unit executes the corresponding steps, for example, the communication unit (transceiver) executes the steps of receiving or transmitting in the method embodiments, and other steps besides transmitting and receiving may be executed by the processing unit (processor). The functions of specific elements may be referred to corresponding method embodiments. The number of the processors may be one or more.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

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

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

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

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

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

In the above embodiments, the functions of the functional units may be fully or partially implemented by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). The procedures or functions described in accordance with the embodiments of the present application are generated in whole or in part when the computer program instructions (programs) are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

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

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

Claims

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

receiving indication information, wherein the indication information is used for indicating a terminal device to detect the configuration of N control resource set groups used by a Physical Downlink Control Channel (PDCCH) in a first time unit;

determining a second time unit according to the PDCCH detected in the first time unit, wherein the terminal equipment detects the PDCCH in the second time unit by using the configuration of M control resource set groups;

wherein the configuration of the control resource set group comprises the control resource set group number and/or the control resource set group index; n is a positive integer greater than or equal to 1, and M is greater than N.
The method of claim 1, wherein the first time unit is turned on at a time that is at least one of:

the terminal equipment starts to detect the time of a PDCCH and the time of a WUS in an on duration timer;

the moment when the first time unit ends is at least one of the following:

the method comprises the steps of detecting a PDCCH scrambled by a first cell radio network temporary identifier C-RNTI, detecting a PDCCH position special for the terminal equipment, detecting X symbols or time slots after the PDCCH position, detecting the time when the terminal equipment stops receiving the PDCCH, and detecting the time when a discontinuous reception DRX period is finished.
The method according to claim 1 or 2, wherein the moment when the second time unit is turned on is the moment when the first time unit ends;

the second time unit ends at a time that is at least one of: the time when the terminal device starts to sleep and the time when the terminal device does not detect the PDCCH.
The method according to claim 2, wherein the value of X is a partial or total value of 1,2,3,4,5,6,7, 8.
The method of claim 1, wherein the indication information comprises at least one of:

a wakeup signal WUS, a PDCCH in the last discontinuous reception DRX period, a channel state indication reference signal CSI-RS, a synchronization signal block SSB, a physical downlink control channel PDCCH, a physical downlink shared channel PDSCH, MAC control element MAC-CE signaling and radio resource control RRC signaling.
The method according to claim 1 or 5, wherein before receiving the indication information, receiving configuration information, the configuration information comprising at least one of:

the control resource set CORESET group index, the control resource set CORESET group number, the default control resource set CORESET group number and the default control resource set CORESET group index.
The method according to claim 1, 5 or 6, wherein the indication information is used for indicating the configuration of the control resource set group used by the terminal device for detecting the Physical Downlink Control Channel (PDCCH) in the first time unit, and comprises:

the indication information indicates the configuration of the control resource set group as the control resource set group number and the control resource set group index; or the like, or, alternatively,

the indication information indicates the configuration of the control resource set group as the control resource set group number, the configuration information configures the control resource set group index; or the like, or, alternatively,

the indication information indicates the configuration of the control resource set group as the control resource set group index, and the configuration information configures the number of the control resource set groups.
The method according to any of claims 1-3, wherein the determining a second time unit based on the PDCCH detected in the first time unit is further based on at least one of:

a Discontinuous Reception (DRX) period, a next Discontinuous Reception (DRX) period, the duration of a next on duration Timer (Onduttimer), the duration of an inactive Timer (inactive Timer) plus a partial on duration Timer (Onduttimer), and the time from the beginning of receiving the PDCCH to the end of receiving the PDCCH by the terminal equipment.
A method for detecting a Physical Downlink Control Channel (PDCCH), the method comprising:

sending indication information, wherein the indication information is used for indicating the configuration of N control resource set groups used by a network device for sending a Physical Downlink Control Channel (PDCCH) in a first time unit;

determining a second time unit according to the PDCCH sent in the first time unit, wherein the network equipment sends the configuration of the M control resource set groups in the second time unit;

wherein the configuration of the control resource set group comprises the control resource set group number and/or the control resource set group index; n is a positive integer greater than or equal to 1, and M is greater than N.
The method of claim 9, wherein the first time unit is turned on at a time that is at least one of:

starting the continuous timer Ondurationtimer and sending a WUS time of a wakeup signal;

the moment when the first time unit ends is at least one of the following:

and sending a PDCCH scrambled by a first cell radio network temporary identifier (C-RNTI) in the persistence timer of the corresponding terminal equipment by using the configuration of the N control resource set groups, sending the PDCCH position dedicated to the terminal equipment by using the configuration of the N control resource set groups, sending X symbols or time slots after the PDCCH position by using the configuration of the N control resource set groups, not sending the PDCCH of the terminal equipment in a DRX period by using the configuration of the N control resource set groups, and ending the discontinuous reception DRX period.
The method according to claim 9 or 10, wherein the second time unit is turned on at the end of the first time unit;

and the moment when the second time unit is finished is the moment when the PDCCH is not transmitted in the DRX period.
The method of claim 10, wherein the value of X is some or all of 1,2,3,4,5,6,7, 8.
The method of claim 9, wherein the indication information comprises at least one of:

a wakeup signal WUS, a PDCCH in the last discontinuous reception DRX period, a channel state indication reference signal CSI-RS, a synchronization signal block SSB, a physical downlink control channel PDCCH, a physical downlink shared channel PDSCH, MAC control element MAC-CE signaling and radio resource control RRC signaling.
The method according to claim 9 or 13, wherein before sending the indication information, sending configuration information, the configuration information comprising at least one of:

the control resource set CORESET group index, the control resource set CORESET group number, the default control resource set CORESET group number and the default control resource set CORESET group index.
The method according to claim 9, 13 or 14, wherein the indication information is used to indicate the configuration of the control resource set group used by the network device to transmit the physical downlink control channel PDCCH in the first time unit, and includes:

the indication information indicates the configuration of the control resource set group as the control resource set group number and the control resource set group index; or the like, or, alternatively,

the indication information indicates the configuration of the control resource set group as the number of the control resource set groups, the configuration information configuring the control resource set group index; or the like, or, alternatively,

the indication information indicates the configuration of the control resource set group as the control resource set group index, and the configuration information configures the number of the control resource set groups.
The method according to any of claims 9-11, wherein the determining a second time unit based on the PDCCH transmitted in the first time unit is further based on at least one of:

the method comprises the steps of receiving a Discontinuous Reception (DRX) cycle, a next Discontinuous Reception (DRX) cycle, the duration of a next on-duration Timer (Onduttimer), the duration of an inactive Timer (inactive Timer) plus a partial on-duration Timer (Onduttimer), and starting from the time when a DRX cycle 1 of a terminal device is on to the time when a network device does not send a Physical Downlink Control Channel (PDCCH) in a DRX cycle 2 of the terminal device.
An apparatus for detecting a Physical Downlink Control Channel (PDCCH), comprising:

a communication unit, configured to receive indication information, where the indication information is used to indicate a terminal device to detect, in a first time unit, configuration of N control resource set groups used by a physical downlink control channel PDCCH;

a processing unit, configured to determine a second time unit according to the PDCCH detected in the first time unit, where the terminal device detects the PDCCH using the configurations of the M control resource set groups in the second time unit;

wherein the configuration of the control resource set group comprises the control resource set group number and/or the control resource set group index; n is a positive integer greater than or equal to 1, and M is greater than N.
The apparatus of claim 17, wherein the first time unit is turned on at a time that is at least one of:

the terminal equipment starts to detect the time of a PDCCH and the time of a WUS in an on duration timer;

the moment when the first time unit ends is at least one of the following:

the method comprises the steps of detecting a PDCCH scrambled by a first cell radio network temporary identifier C-RNTI, detecting a PDCCH position special for the terminal equipment, detecting X symbols or time slots after the PDCCH position, detecting the time when the terminal equipment stops receiving the PDCCH, and detecting the time when a discontinuous reception DRX period is finished.
The apparatus of claim 17 or 18, wherein the second time unit is turned on at the end of the first time unit;

the second time unit ends at a time that is at least one of: the time when the terminal device starts to sleep and the time when the terminal device does not detect the PDCCH.
The apparatus of claim 18, wherein the value of X is some or all of 1,2,3,4,5,6,7, 8.
The apparatus of claim 17, wherein the indication information comprises at least one of:

a wakeup signal WUS, a PDCCH in a last discontinuous reception DRX period, a channel state indication reference signal CSI-RS, a synchronous signal block SSB, a physical downlink control channel PDCCH, a physical downlink shared channel PDSCH, MAC control element MAC-CE signaling and radio resource control RRC signaling.
The apparatus according to claim 17 or 21, wherein before receiving the indication information, configuration information is received, the configuration information comprising at least one of:

the control resource set CORESET group index, the control resource set CORESET group number, the default control resource set CORESET group number and the default control resource set CORESET group index.
The apparatus according to claim 17, 21 or 22, wherein the indication information is used to indicate the configuration of the control resource set group used by the terminal device to detect the physical downlink control channel, PDCCH, in the first time unit, and includes:

the indication information indicates the configuration of the control resource set group as the control resource set group number and the control resource set group index; or the like, or a combination thereof,

the indication information indicates the configuration of the control resource set group as the control resource set group number, the configuration information configures the control resource set group index; or the like, or, alternatively,

the indication information indicates the configuration of the control resource set group as the control resource set group index, and the configuration information configures the number of the control resource set groups.
The apparatus according to any of claims 17-19, wherein the determining a second time unit based on the PDCCH detected in the first time unit is further based on at least one of:

a Discontinuous Reception (DRX) period, a next Discontinuous Reception (DRX) period, the duration of a next on duration Timer (Onduttimer), the duration of an inactive Timer (inactive Timer) plus a partial on duration Timer (Onduttimer), and the time from the beginning of receiving the PDCCH to the end of receiving the PDCCH by the terminal equipment.
An apparatus for detecting a Physical Downlink Control Channel (PDCCH), comprising:

a communication unit, configured to send indication information, where the indication information is used to indicate a configuration of N control resource set groups used by a network device to send a physical downlink control channel PDCCH in a first time unit;

a processing unit, configured to determine a second time unit according to the PDCCH sent in the first time unit, where the network device sends the configuration of the M control resource set groups in the second time unit;

wherein the configuration of the control resource set group comprises the control resource set group number and/or the control resource set group index; n is a positive integer greater than or equal to 1, and M is greater than N.
The apparatus of claim 25, wherein the first time unit is turned on at a time that is at least one of:

starting the continuous timer Ondurationtimer and sending a WUS time of a wakeup signal;

the moment when the first time unit ends is at least one of the following:

and sending a PDCCH scrambled by a first cell radio network temporary identifier (C-RNTI) in the persistence timer of the corresponding terminal equipment by using the configuration of the N control resource set groups, sending the PDCCH position dedicated to the terminal equipment by using the configuration of the N control resource set groups, sending X symbols or time slots after the PDCCH position by using the configuration of the N control resource set groups, not sending the PDCCH of the terminal equipment in a DRX period by using the configuration of the N control resource set groups, and ending the discontinuous reception DRX period.
The apparatus according to claim 25 or 26, wherein the second time unit is turned on at the end of the first time unit;

and the moment when the second time unit is finished is the moment when the PDCCH is not transmitted in the DRX period.
The apparatus of claim 26, wherein the value of X is some or all of 1,2,3,4,5,6,7, 8.
The apparatus of claim 25, wherein the indication information comprises at least one of:

a wakeup signal WUS, a PDCCH in the last discontinuous reception DRX period, a channel state indication reference signal CSI-RS, a synchronization signal block SSB, a physical downlink control channel PDCCH, a physical downlink shared channel PDSCH, MAC control element MAC-CE signaling and radio resource control RRC signaling.
The apparatus according to claim 25 or 29, wherein before sending the indication information, sending configuration information, the configuration information comprising at least one of:

the control resource set CORESET group index, the control resource set CORESET group number, the default control resource set CORESET group number and the default control resource set CORESET group index.
The apparatus according to claim 25, 29 or 30, wherein the indication information is used to indicate the configuration of the control resource set group used by the network device to transmit the physical downlink control channel PDCCH in the first time unit, and includes:

the indication information indicates the configuration of the control resource set group as the control resource set group number and the control resource set group index; or the like, or, alternatively,

the indication information indicates the configuration of the control resource set group as the number of the control resource set groups, the configuration information configuring the control resource set group index; or the like, or, alternatively,

the indication information indicates the configuration of the control resource set group as the control resource set group index, and the configuration information configures the number of the control resource set groups.
The apparatus according to any of claims 25-27, wherein the determining a second time unit based on the PDCCH sent in the first time unit is further based on at least one of:

the method comprises the steps of receiving a Discontinuous Reception (DRX) cycle, a next Discontinuous Reception (DRX) cycle, the duration of a next on-duration Timer (Onduttimer), the duration of an inactive Timer (inactive Timer) plus a partial on-duration Timer (Onduttimer), and starting from the time when a DRX cycle 1 of a terminal device is on to the time when a network device does not send a Physical Downlink Control Channel (PDCCH) in a DRX cycle 2 of the terminal device.
A communications apparatus comprising at least one processor and an interface, the at least one processor being configured to execute a computer program to cause the apparatus to implement the method of any of claims 1 to 16.
A communications apparatus, comprising: a processor and a memory;

the memory is used for storing a computer program;

the processor is configured to execute the memory-stored computer program to cause the apparatus to implement the method of any one of claims 1 to 16.
A computer-readable medium, comprising a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 16.