CN114731580B

CN114731580B - Method and device for detecting Physical Downlink Control Channel (PDCCH)

Info

Publication number: CN114731580B
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: 2023-10-20
Anticipated expiration: 2039-11-19
Also published as: WO2021097648A1; CN114731580A

Abstract

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

Description

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

Technical Field

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

Background

In the application scenario of the new air interface (NR) of 5G, the high-reliability low-latency communication (Ultra-Reliable and Low Latency communication, URLLC) service represents a class of service with low latency and high reliability requirements. In order to improve the requirements of reliability and low time delay, data can be sent and received on different beam ranges and different sending and receiving stations (transmission and reception point, TRP), so that the terminal equipment receives the data of the network equipment 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 (physical downlink control channel, PDCCHs) in one slot, and thus the number of blind-check PDCCHs increases greatly, thereby increasing the detection power consumption of the terminal device for blind-check.

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

Disclosure of Invention

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

In a first aspect, a method for detecting a physical downlink control channel PDCCH is provided. The method may be performed by the terminal device or may be performed by a chip configured in the terminal device, which is not limited in the present 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 number of the control resource set groups and/or the index of the control resource set group; n is a positive integer greater than or equal to 1, M is greater than N.

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

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

the terminal equipment starts to detect the time of PDCCH and the time of a wake-up signal 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 first cell radio network temporary identifier C-RNTI scrambled PDCCH, detecting a PDCCH position special for the terminal equipment, detecting X symbols or time slots after the PDCCH position, detecting the terminal equipment to stop receiving the PDCCH, and detecting the end of a discontinuous reception DRX period.

With reference to the first aspect, in some possible implementations, the time when the second time unit is turned on is the time when the first time unit ends;

and the time when the second time unit ends is the time when the terminal equipment starts to sleep deeply.

With reference to the first aspect, in some possible implementations, the value of X is a value of some or all 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: the method comprises the steps of a wake-up 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 first aspect, in some possible implementations, before receiving the indication information, configuration information is received, where the configuration information includes at least one of: control resource set CORESET index, control resource set CORESET number, default control resource set CORESET index.

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

the indication information indicates the configuration of the control resource set group to be the control resource set group number and the control resource set group index; or alternatively, the first and second heat exchangers may be,

the indication information indicates the configuration of the control resource set group as the number of the control resource set group, and the configuration information configures the index of the control resource set group; or alternatively, the first and second heat exchangers may be,

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

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, where the second time unit may be further determined according to at least one of the following:

Discontinuous Reception (DRX) period, next Discontinuous Reception (DRX) period, duration of next on duration Timer (Onducertymer), duration of inactive Timer (Inactive Timer) plus partial duration Timer (Onducertymer), and time from starting to stopping 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 the network device or may be performed by a chip configured in the network device, which is not limited by the present application.

Specifically, the method comprises the following steps: transmitting indication information, wherein the indication information is used for indicating the configuration of N control resource set groups used by network equipment for transmitting 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, and sending the configuration of M control resource set groups in the second time unit by the network equipment;

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

starting the moment of the continuous timer Oncuration and the moment of sending a wake-up signal WUS;

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

the method comprises the steps of using the configuration of N control resource set groups to send PDCCH scrambled by a first cell radio network temporary identifier C-RNTI in the continuous timer Onducertureof corresponding terminal equipment, using the configuration of N control resource set groups to send the PDCCH position special for the terminal equipment, using the configuration of N control resource set groups to send X symbols or time slots after the PDCCH position, using the configuration of N control resource set groups to not send the PDCCH of the terminal equipment in a DRX period, and ending the discontinuous reception DRX period.

With reference to the second aspect, in some possible implementations, the time when the second time unit is turned on is the time when the first time unit ends;

the time when the second time unit ends is the time 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 value of some or all 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:

the method comprises the steps of a wake-up 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, configuration information is sent, where the configuration information includes at least one of:

control resource set CORESET index, control resource set CORESET number, default control resource set CORESET index.

With reference to the second aspect, in some possible implementations, the indicating information is configured to indicate, by the network device, a configuration of the control resource set used by the network device to send the physical downlink control channel PDCCH at the first time unit, including:

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

discontinuous Reception (DRX) period, next Discontinuous Reception (DRX) period, duration of next on duration Timer (Onducertymer), duration of inactive Timer (Inactive Timer) plus partial duration Timer (Onducertymer), and time from starting of DRX period 1 of terminal equipment to time when the network equipment does not send PDCCH in DRX period 2 of the terminal equipment.

In a third aspect, there is provided a communication device comprising individual modules or units for performing the method in any one of the possible implementations of the first aspect.

In a fourth aspect, a communication device is provided that includes a processor. The processor is coupled to the memory and 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, and the processor is 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 device. When the communication means is a chip arranged in the terminal device, the communication interface may be an input/output interface.

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

In a fifth aspect, there is provided a communication device comprising individual modules or units for performing the method in any one of the possible implementations of the second aspect.

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

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

In a seventh aspect, there is provided a processor comprising: 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, such that the processor performs the first or second aspect and the method in any one of the possible implementations of the first or 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 trigger, 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 output signal may be output by, for example and without limitation, a transmitter and transmitted by a transmitter, and the input circuit and the output circuit may be the same circuit, which functions as the input circuit and the output circuit, respectively, at different times. The embodiment of the application does not limit the specific implementation modes of the processor and various circuits.

In an eighth aspect, a processing device is provided that includes a processor and a memory. The processor is configured to read instructions stored in the memory and is configured to receive a signal via the receiver and to transmit a signal via the transmitter to perform 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.

Optionally, the processor is one or more, and the memory is one or more.

Alternatively, the memory may be integrated with the processor or the memory may be separate from the processor.

In a specific implementation process, the memory may be a non-transient (non-transitory) memory, for example, 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 should be appreciated that the related data interaction process, for example, transmitting the indication information, may be a process of outputting the indication information from the processor, and the receiving the capability information may be a process of receiving the input capability information by the processor. Specifically, the data output by the processor may be output to the transmitter, and the input data received by the processor may be from the receiver. Wherein the transmitter and receiver may be collectively referred to as a transceiver.

The processing means in the eighth aspect may be a chip, and the processor may be implemented by hardware or 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 in the processor, or may reside outside the processor, and exist separately.

In a ninth aspect, there is provided a 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 one of the possible implementations of the first or second aspects described above.

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

An eleventh aspect provides a communication system comprising the aforementioned network device and terminal device.

Drawings

Fig. 1 is a schematic diagram of a communication system 100 adapted for use in a PDCCH detection method according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a terminal-side system architecture 200 suitable for use with 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 by 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 a device interaction perspective;

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

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 according to 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 scheme of the 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, such as: long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), fifth generation (5th generation,5G) system, or New Radio (NR), etc.

It should be understood that the network device in the communication system may be any device having a wireless transceiver function or a chip that may be disposed on the device, where the device includes, but is not limited to: an evolved Node B (eNB), a radio network controller (Radio Network Controller, RNC), a Node B (Node B, NB), a base station controller (Base Station Controller, BSC), a base transceiver station (Base Transceiver Station, BTS), a Home base station (Home evolved NodeB, or a Home Node B, HNB, for example), a Base Band Unit (BBU), an Access Point (AP) in a wireless fidelity (wireless Fidelity, WIFI) system, a wireless relay Node, a wireless backhaul Node, a transmission Point (transmission Point, TP), or a transmission and reception Point (Transmission receiving Point, TRP), etc., may also be 5G, such as NR, a gNB in a system, or a transmission Point (TRP or TP), one or a group (including a plurality of antenna panels) of base stations in a 5G system, or may also be a network Node constituting a gNB or a transmission Point, such as a BaseBand Unit (BBU), or a Distributed Unit (DU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and DUs. The gNB may also include a Radio Unit (RU). The CU implements part of the functions of the gNB, the DU implements part of the functions of the gNB, for example, the CU implements the functions of a radio resource control (radio resource control, RRC), a packet data convergence layer protocol (packet data convergence protocol, PDCP) layer, and the DU implements the functions of a radio link control (radio link control, RLC), a medium access control (media access control, MAC), and a Physical (PHY) layer. Since the information of the RRC layer may be eventually changed into the information of the PHY layer or converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling or PHCP layer signaling, may also be considered as being transmitted by the DU or by the du+ru. It is 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 appreciated that the terminal devices in the communication system may also be referred to as User Equipment (UE), access terminals, subscriber units, subscriber stations, mobile stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents, or user equipment. 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 (Augmented Reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), or the like. The embodiment of the application does not limit the application scene.

To facilitate an understanding of the embodiments of the present application, a brief description of several terms used in connection with the present application will be provided.

1. Control resource set (control resource set, CORESET): the control resource set may be a set of resources for transmitting downlink control information (downlink control information, DCI), which may also be referred to as a control resource region, or a set of physical downlink control channel resources.

For a network device, a set of control resources may be understood as a set of resources that may be used to transmit a physical downlink control channel (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. Alternatively, the network device may determine the resources used for transmitting the PDCCH from the control resource set, and the terminal device may determine the search space of the PDCCH according to the control resource set.

Wherein, the control resource set may include time-frequency resources, for example, a section of bandwidth, one or more sub-bands, or the like, in the frequency domain; may be one or more symbols in the time domain; one control resource set may be a continuous or discontinuous resource unit, e.g., a continuous Resource Block (RB) or a discontinuous RB, 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 may have different names, and may be sometimes referred to as the number and/or index of the CORESET pool, the number and/or index of the transmission configuration indication state TCI state group, the number and/or index of the reference signal CSI-RS, the number and/or index of the synchronization signal block SSB, and the number and/or index of the beam group.

The 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 can be configured by the network device and sent to the terminal device, and the configuration information can be carried in any one of a physical broadcast channel (Physical Broadcast Channel, PBCH), remaining minimum system information (Remaining minimum system information, RMSI), a system information block (System Information Block, SIB) 1, SIB2, SIB3, a medium access control element (Media Access control-control element, MAC-CE), downlink control information (Down link control information, DCI), radio resource control (Radio Resource Control, RRC) and system information; the association relationship may be defined by a standard, or the network device and the terminal device may be agreed in advance, or may be indicated by a wake-up signal (WUS). When indicating using WUS, TRP of a stage may be used for indication when WUS has the stage, and a network device may use WUS of a second stage for indication when WUS has two or more stages.

3. Synchronization signal block: the synchronization signal block may be referred to as a synchronization signal/physical broadcast channel (synchronization signal/Physical broadcast channel, SS/PBCH block), or SSB for short, and may include at least one of a PBCH, a primary synchronization signal (primary synchronization signal, PS S), and a secondary synchronization signal (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, numbering may be continued from 0. For example, the 0 th symbol in a slot may refer to the first symbol of the slot. Of course, the specific implementation is not limited thereto. For example, the serial numbers may be numbered from 1. For example, the 1 st symbol in a slot may also refer to the first symbol of the slot. Since the starting 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 foregoing is provided for the purpose of illustrating the technical solutions provided by the embodiments of the present application, and is 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. For example, a first time unit, a second time unit, wherein the first and second are used to distinguish between different time units, etc.

Third, in the embodiment of the present application, "of", "corresponding" and "corresponding" may be sometimes used in combination, and it should be noted that the meaning to be expressed is consistent when the distinction is not emphasized. "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). 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 can be single or multiple respectively.

Fourth, the association in the present application may also be referred to as mapping, correspondence, correlation, and allocation. When the random access period or the random access set is related to the paging occasion, the terminal device of the paging occasion can send a random access preamble on the random access occasion in the random access period, and can be used for requesting a paging message or reporting 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, the terminal device of the paging occasion and the paging message or the paging indication in the SS/PBCH block or the paging occasion can also indicate that the terminal device of the paging occasion has a quasi-co-located (QCL) relation, can adopt the same time delay expansion or the same Doppler expansion or the same average gain, the same average time delay or the same airspace parameter to send or receive signals, or adopt the same beam to send or receive signals. The parameters of quasi co-location include: at least one of doppler spread, doppler shift, average delay, delay spread and spatial domain receive parameters. QCL relationships can be divided into four classes: 'QCL-TypeA': { Doppler shift, doppler spread, average delay, delay spread }; 'QCL-TypeB': { Doppler shift, doppler spread }; 'QCL-TypeC': { Doppler shift, average delay }; 'QCL-TypeD': { spatial domain reception parameters }.

In order to facilitate understanding of the embodiments of the present application, a communication system for detecting a physical downlink control channel PDCCH according to 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 an embodiment of the application. As shown, the communication system 100 may include at least one terminal device, such as terminal device 101 shown in the figures; 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 may be network devices in different cells, which is not limited in the present application. The figure shows, by way of example only, an example in which network device #1102 and network device #2103 are located in the same cell.

In the communication system 100, the network device transmits indication information to the terminal device, the indication information indicating that the terminal device detects PDCCHs using the configurations of the N control resource set groups in the first time unit, determines a second time unit according to the PDCCHs detected in the first time unit, and detects PDCCHs 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 instruct the terminal device to detect, in a first time unit, 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, wherein the terminal equipment detects the PDCCH by using the configuration of M control resource set groups in the second time unit.

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, the network device sends indication information, where the indication information is used to instruct the network device to send, 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 transmitted in the first time unit, and transmitting the configuration of the M control resource set groups by the network equipment in the second time unit.

The discontinuous reception (discontinuous reception, DRX) cycle is described in detail in connection with fig. 4. In the time domain, time is divided into successive DRX cycles (DRX cycles). The DRX cycle is a cycle for describing the repetition of onduration timer in the DRX mode. One DRX cycle consists of "OnDurationTimer" and "Opportunity for DRX". During the period of onduration timer, the UE listens to the PDCCH, so that the data of the downlink channel can be received. The period of "onduration timer" may also be referred to as the active period. "Opportunity for DRX" is the possible sleep time during which the UE turns off the receiver, the UE does not monitor the PDCCH, and does not receive data of the downlink channel to save power consumption. The period of "Opportunity for DRX" may also be referred to as a sleep period. Once the terminal detects a PDCCH, the terminal starts an inactive timer (i.e., an active timer) in which the terminal continues to detect the PDCCH.

The selection of the DRX Cycle (DRX Cycle) involves reducing the balance between UE power consumption and traffic delay. In one aspect, a long DRX cycle is beneficial to reduce power consumption of the UE. On the other hand, a short DRX cycle is advantageous for faster response when there is new data transmission. The DRX long cycle is a configuration necessary for the system, and the shortDRX cycle is optionally configured. In other words, when the system adopts a long DRX cycle (long DRX cycle), the DRX cycle is the 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 DRX short Cycle (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, the number of the blind detection PDCCHs of the terminal equipment is greatly increased under the scene of multi-station data transmission, so that the detection loss of the terminal equipment is increased. In order to reduce the detection loss of the terminal equipment, a method for detecting the PDCCH is provided. For example, the terminal device receives indication information sent by the network device, where the indication information is used to instruct the terminal device to detect, in a first time unit, configuration of N control resource set groups used by a physical downlink control channel PDCCH; 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 M control resource set groups; wherein the configuration of the control resource set group comprises the number of the control resource set group and/or the index of the control resource set group; n is a positive integer greater than or equal to 1, M is greater than N.

Fig. 5 is a schematic flow chart of a method 500 for detecting PDCCH provided by an embodiment of the present application, shown from a device interaction perspective. 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 by 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 a wireless communication connection relationship therebetween. 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 by the present application.

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

Specifically, the indication information is used for indicating the configuration of N control resource set groups used by the terminal device to detect the physical downlink control channel PDCCH in the first time unit, that is, the terminal device uses the configuration of N control resource set groups to detect the PDCCH in the first time unit, 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 the primary TRP information or Default TRP (Default S-TRP) information. The default TRP information indicates that when the base station transmits the PDCCH using one TRP, the TRP indicates that the CORESET indicated by the CORESET high layer parameter index is in a transmission state, the terminal device detects only the CORESET indicated by the CORESET high layer parameter index, as shown in fig. 6 (a), the terminal device detects the PDCCH using the configuration of a single TRP (S-TRP), and when the PDCCH scrambled by the C-RNTI is detected in the duration timer onduration, the terminal device starts a plurality of TRP (M-TRP) to detect the PDCCH, and the M-TRP enters a sleep period (Deep sleep) after detecting the PDCCH in the duration timer onduration.

The control resource set group in the embodiment of the application can be TRP, or can also be a CORESET pool, or can also be a CORESET, or can also be a beam set, or can also be a beam pool, or can also be a beam set, or can also be a reference signal pool, or can also be a reference signal set, or can also be CORESET higher layer parameters, or can also be other parameters representing TRP. The control resource set group index may be a TRP index, or may be a CORESET pool index, or may be a CORESET set index, or may be a beam pool index, or may be a beam set index, or may be a reference signal pool index, or may be a reference signal set index, or may be a CORESET higher layer parameter index, or may be other index representing a TRP index. The number of control resource set groups may be the number of TRP, or may also be the number of CORESET pool, 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 pool, or may also be the number of beam set, or may also be the number of reference signal group, or may also be the number of reference signal pool, or may also be the number of reference signal set, or may also be the number of CORESET higher layer parameters, or may also be other numbers representing TRP indexes. In the following description, the control resource set group index and/or the number of control resource set groups are selected for example, and the control resource set group index may be replaced by a TRP index, a CORESET pool index, a CORESET set index, a beam group index, a beam pool index, a beam set index, a reference signal pool index, or a reference signal set index; the number of control resource sets may be replaced by the number of TRPs, the number of CORESET pools, the number of CORESET sets, the number of beam pools, the number of beam sets, the number of reference signal pools, the number of reference signal sets, the number of CORESET higher layer parameters, or other numbers representing TRP indexes, which is not limited in the embodiment 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 wake-up signal WUS is shown in fig. 6 (a), and the PDCCH in the last DRX cycle is received discontinuously, and the channel state indication reference signal CSI-RS, the synchronization signal block SSB, the physical downlink control channel PDCCH, the physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), the MAC control element MAC-CE signaling, and the radio resource control RRC signaling are shown in fig. 6 (b).

Optionally, the wake-up signal in the embodiment of the present application may be a PDCCH signal or 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, 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 be also be a period of the search space, or may be irrelevant to the period of the DRX, and may be configured independently, where the duration of the period may also be configured independently, for example, the configuration period is configured in an existing search space, and the network device may configure or the protocol may specify a search space period associated with an onduration timer in the next DRX period, for example, a search space period closest to the onduration timer. The duration of the searchSpace may be 1 or 2 or 3 or 4 slots in order to reduce the blind detection power consumption of the terminal device.

Optionally, the indication mode of the indication information may be an implicit indication mode or a display indication mode. The implicit indication may use a characteristic indication of the signal, e.g. the configuration of the control resource group of the PDCCH detecting the first time unit may be the configuration of the control resource group detecting WUS. The implicit indication mode may also be that no indication information is provided, and configuration information is directly used 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 determine the configuration of the control resource group for detecting the PDCCH of the first time unit by directly using information specified by the protocol without indication information, as shown in fig. 6 (b). The indication may be indicated by a field in the signaling.

Optionally, before receiving the indication information, the terminal device receives configuration information, where the configuration information includes at least one of the following: control resource set CORESET index, control resource set CORESET number, default control resource set CORESET index. Optionally, the configuration information is configured by radio resource control (radio resource control, RRC) RRC or medium access control (MediaAccess Control, MAC) or DCI signaling.

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

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

In one possible implementation, the configuration of the control resource set group is coacted by the indication information and the configuration information: the indication information indicates that the configuration of the control resource set group is to control the number of the resource set group, 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 is 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 configuration information. Illustratively, the network device and the terminal device pre-provision information and/or number information of the control resource set group index. Optionally, the network device configures the control resource set group index and/or the number information for the terminal device using the configuration information. Optionally, the terminal device reports information of 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. Alternatively, the other signals may be a wake-up signal WUS, a PDCCH in a last DRX cycle, 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 association with other signals may be expressed as employing the exact same set of control resources configuration or a partially identical set of control resources configuration.

In another possible implementation manner, the configuration of the control resource set groups is 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 configuration of the control resource set groups as the number of the control resource set groups and the index of the control resource set groups, where 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 corresponds to one bit, it is assumed that there are two control resource set groups (denoted as control resource set group 1 and control resource set group 2, respectively, control resource set group 1 being associated with TRP1, control resource set group 2 being associated with TRP 2), and 2 bits are used for indication, denoted as first bit and second bit. When the first bit indicates the control resource set group 1 and the first bit value is 0, it indicates that the control resource set group 1 does not have a corresponding PDCCH, that is, TRP1 does not transmit the PDCCH; when the first bit indicates that 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, that is, TRP1 transmits the PDCCH. When the second bit indicates the control resource set group 2 and the second bit value is 0, the control resource set group 2 does not have a corresponding PDCCH, namely TRP2 does not send the PDCCH; when the second bit indicates the control resource set group 2 and the second bit value is 1, it indicates that the control resource set group 2 has a corresponding PDCCH, that is, TRP2 transmits the PDCCH. Alternatively, N may be any one or more of 2,3,4,5,6,7, 8.

Alternatively, when the N control resource set groups correspond to one bit, it is assumed that there are two control resource set groups (denoted as control resource set group 1 and control resource set group 2, respectively, control resource set group 1 being associated with TRP1, control resource set group 2 being associated with TRP 2), and an indication is made using 1 bit, denoted as the 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 indicates that the control resource set group 1 and the control resource set group 2 do not have corresponding PDCCHs, namely TRP1 and TRP2 do not send PDCCHs; when the first bit value is 1, it indicates that the control resource set group 1 and the control resource set group 2 have corresponding PDCCHs, that is, 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 control resource set group corresponds to one bit and N control resource set groups correspond to one bit, it is assumed that there are 3 control resource set groups (denoted as control resource set group 1, control resource set group 2, and control resource set group 3, respectively, control resource set group 1 is associated with TRP1, control resource set group 2 is associated with TRP2, and control resource set group 3 is associated with TRP 3), and an indication is made using 2 bits, denoted as a first bit and a second bit, for example. The first bit indicates the control resource set group 1 and the control resource set group 2, when the first bit value is 0, it 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 PDCCHs; when the first bit value is 1, it indicates that the control resource set group 1 and the control resource set group 2 have corresponding PDCCHs, that is, both TRP1 and TRP2 transmit PDCCHs. The second bit indicates the control resource set group 3, and when the second bit value is 0, it indicates that the control resource set group 3 does not have a corresponding PDCCH, that is, TRP3 does not transmit a PDCCH; when the second bit value is 1, it indicates that the control resource set group 3 has a corresponding PDCCH, that is, 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 groups is indicated by the indication information, and may be indicated by Y bits, that is, the control resource set group number and the control resource set group index are indicated by Y bits. Illustratively, assuming that bit Y, which indicates the configuration of the control resource set group, is equal to 2, the 2 bits are denoted as a first bit and a second bit, respectively. 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 the control resource set group index 1 or the control resource set group index 2. Alternatively, when the number of control resource set groups is 2, the indication may be made by 1 bit, i.e., the first bit indicates the number of control resource set groups, at which time the index indicating the control resource set group is not required.

In another possible embodiment, the indication information indicates that the configuration of the control resource set group is a control resource set group index, and the configuration information configures the number of 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 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 the default control resource set group number 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 sending data PDCCH, thereby greatly saving signaling overhead.

In another possible implementation, the configuration information indicates a configuration of the control resource set groups, the configuration information configuring the control resource set group numbers and/or indexes. The network device configures the index and the number of the control resource groups of the detected PDCCH in the second time unit through the configuration information, and also configures the number and/or the index of the control resource set groups of the detected PDCCH in the first time unit, wherein the configuration of the control resource set groups of the detected PDCCH in the first time unit is the configuration of the control resource set groups. Assuming that two control resource set groups (respectively denoted as a control resource set group 1 and a control resource set group 2) are included in the control resource set for detecting the PDCCH in the second time unit, the control resource set group is defaulted to be the control resource set group 1, and indexes of the control resource set group are indicated by 2 bits and respectively denoted as a first bit and a second bit. 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 define default partial parameters of the control resource set group through a protocol, and the network device indicates the remaining partial parameters of the control resource set group through configuration information, wherein the partial parameters are indexes, and the remaining partial parameters are numbers; or part of parameters are the number, and the rest of parameters are indexes, so that signaling overhead is greatly saved. Optionally, the network device and the terminal device define all parameters of a default control resource set 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 point of view of the terminal device, the time when the first time unit is turned on is at least one of the following: and the terminal equipment starts to detect the PDCCH in the on duration timer Onduration timer and detects the wake-up signal WUS. Optionally, the moment of the first time end is at least one of the following: the method comprises the steps of detecting a first cell radio network temporary identifier C-RNTI scrambled PDCCH, detecting a PDCCH position special for the terminal equipment, detecting X symbols or time slots after the PDCCH position, detecting the terminal to stop receiving the PDCCH, and detecting the end of a discontinuous reception DRX period. Optionally, the value of X is a value of some or all 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 the network device, the time when the first time unit is turned on is at least one of the following: the time when the duration timer is started and the time when the wake-up signal WUS is sent. Optionally, the time when the first time unit ends is at least one of the following: the method comprises the steps of using the configuration of N control resource set groups to send PDCCH scrambled by a first cell radio network temporary identifier C-RNTI in the continuous timer Onducertureof corresponding terminal equipment, using the configuration of N control resource set groups to send the PDCCH position special for the terminal equipment, using the configuration of N control resource set groups to send X symbols or time slots after the PDCCH position, using the configuration of N control resource set groups to not send the PDCCH of the terminal equipment in a DRX period, and ending the discontinuous reception DRX period.

Optionally, the first time unit may be at least one of: discontinuous Reception (DRX) period, next Discontinuous Reception (DRX) period, duration of next on duration Timer (OncdurationTimer), duration of inactive Timer (Inactive Timer) plus partial duration Timer (OncdurationTimer), and time from starting to stopping receiving the PDCCH by the terminal device.

In step 520, the terminal device determines a second time unit according to the PDCCH detected by the first time unit, and detects the PDCCH using the configuration of the M control resource set groups in the second time unit, where M is greater than N. And the network equipment determines a second time unit according to the PDCCH transmitted in the first time unit, and transmits 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 turned on according to the time when the first time unit ends, or determines the time when the second time unit is turned on according to the time when X symbols or 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 the second time unit, wherein the configuration of the M control resource set groups is the configuration of the control resource set group corresponding to the TRP of the default transmission PDCCH.

Optionally, from the point of view of the terminal device, the time when the second time unit is turned on is the time when the first time unit ends; and the time when the second time unit ends is the time when the terminal equipment starts sleeping or the time 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 be further determined according to at least one of the following: discontinuous Reception (DRX) period, next Discontinuous Reception (DRX) period, duration of next on duration Timer (Onducertymer), duration of inactive Timer (Inactive Timer) plus partial duration Timer (Onducertymer), and time from starting to stopping receiving the PDCCH by the terminal equipment.

Optionally, from the perspective of the network device, the time when the second time unit is turned on is the time when the first time unit ends; the time when the second time unit ends is the time 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 be further determined according to at least one of the following: discontinuous Reception (DRX) period, next Discontinuous Reception (DRX) period, duration of next on duration Timer (Onducertymer), duration of inactive Timer (Inactive Timer) plus partial duration Timer (Onducertymer), and time from starting of DRX period 1 of terminal equipment to time when the network equipment does not send PDCCH in DRX period 2 of the terminal equipment.

For example, as shown in fig. 6 (c), the second time unit is determined according to the duration of the 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.

Alternatively, DRX cycle 1 and DRX cycle 2 may or may not be equal.

Alternatively, the network device may also indicate the end of a single TRP (S-TRP) and/or the opening of multiple TRPs (M-TRP) using an indication signal, e.g. the end of S-TRP or the opening of M-TRP using a de-sleep signal (GTS) or the end of M-TRP using downlink control information (downlink control information, DCI). Illustratively, as shown in fig. 6 (d), the end of the M-TRP is indicated using a GTS signal. Alternatively, the indication signal may be a MAC-CE signal or a sequence signal.

Optionally, the terminal device detects the PDCCH using the configuration of the single TRP-associated control resource set, when the terminal device detects the PDCCH scrambled by the cell radio network temporary identifier (cell radio network temporary identifier, C-RNTI), it is assumed that the network device performs a TRP switch, which can be switched from one TRP to another TRP, i.e. the terminal device detects the PDCCH using the configuration of the switched TRP-associated control resource set; or switching from one TRP to a plurality of TRPs, namely, the terminal equipment completes the detection of the PDCCH by using the configuration of a plurality of control resource set groups associated with the plurality of TRPs after switching. Optionally, when the terminal device detects X symbols or slots after the C-RNTI scrambled PDCCH, the network device cannot have multiple TRPs to send the PDCCH, i.e. X symbols or slots after the C-RNTI scrambled PDCCH is detected are used to reserve time to turn on multiple TRPs or switch TRPs to detect the PDCCH.

Alternatively, 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 (cyclic redundancy code, CRC) of the DCI using the C-RNTI. The GTS signal indicates that the terminal device sleeps, and may indicate a time length for which the terminal device sleeps. The time start position indicating sleep may be a time domain resource end position of the GTS signal and the duration may be a GTS signal designation, e.g., indicated by a field in the GTS. Optionally, the time domain field is multiplexed for indication. Alternatively, the network device may add a field to 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 the DCI and the physical downlink shared channel (physical downlink shared channel, PDSCH) scheduled by the DCI; when the DCI is not a GTS signal, the terminal device detects a PDCCH between DCI and DCI scheduled PDSCH. Alternatively, when the DCI signal is a GTS signal, the terminal device does not detect a PDCCH between DCI and a specified time; when the DCI signal is not a GTS signal, the terminal device detects a PDCCH between DCI and a specified time.

Specifically, the designated time is the time carried by the GTS. Alternatively, the specified time is a time of PDSCH scheduled by DCI 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/frames, or may be a time configured for radio resource control (radio resource control, RRC) signaling, or may be a time configured for MAC-CE, or may be an end time of an active-Timer, or may be other time, which is not limited herein.

The method provided by the embodiment of the application is described in detail above with reference to fig. 5 and 6. The following describes in detail a communication device provided in an embodiment of the present application with reference to fig. 7.

Fig. 7 is a schematic block diagram of a communication device provided by 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 device 1000 may correspond to the terminal device in the above method embodiment, for example, may be a terminal device, or a chip configured in the terminal device.

In particular, the communication apparatus 1000 may correspond to a terminal device in the method 500 according to an embodiment of the application, and the communication apparatus 1000 may comprise means for performing the method performed by the terminal device in the method 500 in fig. 5. And, each unit in the communication device 1000 and the other operations and/or functions described above are respectively for implementing the corresponding flow of the method 500 in fig. 5.

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

It should be understood that the specific process of each unit performing the corresponding steps has been described in detail in the above method embodiments, and is not described herein for brevity.

It should also be appreciated 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 apparatus 1000 is a chip configured in a network device, the communication unit 1100 in the communication apparatus 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 may be applied to a system as shown in fig. 1, and perform the functions of the terminal device in the above-described 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 may communicate with each other via an internal connection path, transferring control and/or data signals, the memory 2030 is used for storing a computer program, and the processor 2010 is used for calling and running the computer program from the memory 2030 to control the transceiver 2020 to transceive signals. Optionally, the terminal device 2000 may further include an antenna 2040 for transmitting uplink data and uplink control signaling output by the transceiver 2020 through a wireless signal.

The processor 2010 and the memory 2030 may be combined into one processing device, and the processor 2010 is configured to execute program codes stored in the memory 2030 to implement the functions. In particular implementations, the memory 2030 may also be integrated within the processor 2010 or separate from the processor 2010. The processor 2010 may correspond to the processing unit of 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 circuitry) and a transmitter (or transmitter, transmitting circuitry). Wherein the receiver is for receiving signals and the transmitter is for transmitting signals.

It should be understood that the 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 respective modules in the terminal device 2000 are respectively for implementing the corresponding flows in the above-described method embodiment. Reference is specifically made to the description of the above method embodiments, and detailed descriptions are omitted here as appropriate to avoid redundancy.

The above-described processor 2010 may be used to perform the actions described in the previous method embodiments as being performed internally by the terminal device, while the transceiver 2020 may be used to perform the actions described in the previous method embodiments as being transmitted to or received from the network device by the terminal device. Please refer to the description of the foregoing method embodiments, and details are not repeated herein.

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

In addition, in order to make the functions of the terminal device more complete, 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, which may be, for example, a base station, according to an embodiment of the present application. The base station 3000 may be applied to the system shown in fig. 1, and perform 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 frequency unit (remote radio unit, RRU) 3100 and one or more baseband units (BBU) (also referred to as digital units, DUs) 3200. The RRU 3100 may be referred to as a transceiver unit, corresponding to the communication unit 1200 in fig. 7. Alternatively, the transceiver unit 3100 may also be referred to as a transceiver, a transceiver circuit, or a 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, which may correspond to a receiver (or receiver, receiving circuit), and a transmitting unit, which may correspond to a transmitter (or transmitter, transmitting circuit). The RRU 3100 is mainly configured to receive and transmit a radio frequency signal and convert the radio frequency signal to a baseband signal, for example, to send indication information to a terminal device. The BBU 3200 portion is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 3100 and BBU 3200 may be physically disposed together, or may be physically disposed separately, i.e. a distributed base station.

The BBU 3200 is a control center of the base station, and may also be referred to as a processing unit, and 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 so on. For example, the BBU (processing unit) may be configured to control the base station to perform the operation procedure with respect to the network device in the above-described method embodiment, for example, generate the above-described indication information, etc.

In one example, the BBU 3200 may be configured by one or more single boards, where the multiple single boards may support a single access radio access network (such as an LTE network) together, or may support radio access networks of different access systems (such as an LTE network, a 5G network, or other networks) respectively. 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 configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedure 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 the processor may be separately provided on each board. It is also possible that multiple boards share the same memory and processor. In addition, each single board can be provided with necessary circuits.

It should be understood that the 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. Reference is specifically made to the description of the above method embodiments, and detailed descriptions are omitted here as appropriate to avoid redundancy.

The BBU 3200 described above may be used to perform actions described in the foregoing method embodiments as being implemented internally by a network device, while the RRU 3100 may be used to perform actions described in the foregoing method embodiments as being transmitted to or received from a terminal device by the network device. Please refer to the description of the foregoing method embodiments, and details are not repeated herein.

The embodiment of the application also provides a processing device, which comprises a processor and an interface; the processor is configured to perform the method of communication in the method embodiment described above.

It should be understood that the processing means may be a chip. For example, the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated chip (application specific integrated circuit, ASIC), a system on chip (SoC), a central processing unit (central processor unit, CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), a microcontroller (micro controllerunit, MCU), a programmable controller (programmable logic device, PLD) or other integrated chip.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capability. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor 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, or discrete hardware components. The disclosed methods, steps, and logic blocks 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 embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile 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. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus 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 a method provided by an embodiment of the present application, the present application also provides a computer program product, including: computer program code which, when run on a computer, causes the computer to perform the method of the embodiment shown in fig. 5.

According to the method provided by the embodiment of the present application, the present application further provides a computer readable medium storing a 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 application, the application also provides a system which comprises the one or more terminal devices and one or more network devices.

In the above embodiments, it may be implemented in whole or in part 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 the computer instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. 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 by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more 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 high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The network device in the above-mentioned respective apparatus embodiments corresponds entirely to the network device or the terminal device in the terminal device and method embodiments, the respective steps are performed by respective modules or units, for example, the steps of receiving or transmitting in the method embodiments are performed by the communication unit (transceiver), and other steps than transmitting and receiving may be performed by the processing unit (processor). Reference may be made to corresponding method embodiments for the function of a specific unit. Wherein the processor 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 may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between 2 or more computers. Furthermore, 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 one another 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 (illustrative logical block) and steps (steps) described in connection with the embodiments disclosed herein can 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 solution. 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 will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

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

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

In the above-described embodiments, the functions of the respective functional units may be implemented in whole or in part 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 (programs). When the computer program instructions (program) are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are fully or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more 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)), or the like.

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 this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within 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

1. 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;

2. The method of claim 1, wherein the time at which the first time unit is turned on is at least one of:

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

3. 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 time when the second time unit ends is at least one of the following: and the terminal equipment starts sleeping at the moment and does not detect the PDCCH at the moment.

4. The method of claim 2, wherein the value of X is 1,2,3,4,5,6,7 or 8.

5. The method of claim 1, wherein the indication information comprises at least one of:

the method comprises the steps of a wake-up 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 shared channel PDSCH, MAC control element MAC-CE signaling and radio resource control RRC signaling.

6. The method of claim 1 or 5, wherein prior to receiving the indication information, configuration information is received, the configuration information comprising at least one of:

7. The method according to claim 6, wherein the indicating information is used to indicate the configuration of the control resource set used by the terminal device to detect the physical downlink control channel PDCCH at the first time unit, and includes:

8. The method according to claim 1 or 2, wherein the determining a second time unit from the PDCCH detected at the first time unit is further determined from at least one of:

the method comprises the steps of a next Discontinuous Reception (DRX) period, the duration of a next on duration Timer (OnduceTimer), the duration of an inactive Timer plus a partial duration Timer (OnduceTimer), and the time from starting to stopping receiving the PDCCH by a terminal device.

9. A method for detecting a physical downlink control channel, PDCCH, the method comprising:

transmitting indication information, wherein the indication information is used for indicating the configuration of N control resource set groups used by network equipment for transmitting a physical downlink control channel PDCCH in a first time unit;

10. The method of claim 9, wherein the time at which the first time unit is turned on is at least one of:

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

11. The method of claim 10, wherein the time at which the second time unit is turned on is the time at which the first time unit ends;

12. The method of claim 10, wherein the value of X is 1,2,3,4,5,6,7 or 8.

13. The method of claim 9, wherein the indication information comprises at least one of:

14. The method according to claim 9 or 13, characterized in that before transmitting the indication information, configuration information is transmitted, the configuration information comprising at least one of:

15. The method of claim 14, wherein the indicating information is configured to indicate the configuration of the control resource set used by the network device to transmit the physical downlink control channel PDCCH at the first time unit, and comprises:

16. The method according to any of claims 9-11, wherein the determining a second time unit from the PDCCH transmitted in the first time unit is further based on at least one of:

the method comprises the steps of continuously receiving a DRX period next, the duration of a next on duration Timer OnduceTimer, the duration of an inactive Timer plus a partial duration Timer OnduceTimer, and starting from the moment of starting a DRX period 1 of a terminal device to the moment that the network device does not send PDCCH in a DRX period 2 of the terminal device.

17. An apparatus for detecting a physical downlink control channel PDCCH, comprising:

The communication unit is used for receiving indication information, wherein the indication information is used for indicating the terminal equipment to detect the configuration of N control resource set groups used by 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 detected in the first time unit, where the terminal device detects the PDCCH using configurations of M control resource set groups;

18. The apparatus of claim 17, wherein the time at which the first time unit is turned on is at least one of:

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

19. The apparatus according to claim 17 or 18, wherein the moment when the second time unit is turned on is the moment when the first time unit ends;

20. The device of claim 18, wherein the value of X is 1,2,3,4,5,6,7 or 8.

21. The apparatus of claim 17, wherein the indication information comprises at least one of:

22. The apparatus according to claim 17 or 21, wherein prior to receiving the indication information, configuration information is received, the configuration information comprising at least one of:

23. The apparatus of claim 22, wherein the indication information is configured to indicate the configuration of the control resource set used by the terminal device to detect the physical downlink control channel PDCCH at the first time unit, and comprises:

24. The apparatus of claim 17 or 18, wherein the determining a second time unit from the PDCCH detected at the first time unit is further based on at least one of:

25. An apparatus for detecting a physical downlink control channel PDCCH, comprising:

the communication unit is used for sending indication information, wherein the indication information is used for indicating the network equipment to send the configuration of N control resource set groups used by the physical downlink control channel PDCCH in the 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 configurations of M control resource set groups in the second time unit;

26. The apparatus of claim 25, wherein the time at which the first time unit is turned on is at least one of:

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

27. The apparatus of claim 26, wherein the time at which the second time unit is turned on is the time at which the first time unit ends;

28. The device of claim 26, wherein the value of X is 1,2,3,4,5,6,7 or 8.

29. The apparatus of claim 25, wherein the indication information comprises at least one of:

30. The apparatus according to claim 25 or 29, wherein prior to transmitting the indication information, configuration information is transmitted, the configuration information comprising at least one of:

31. The apparatus of claim 30, wherein the indication information is configured to indicate a configuration of the set of control resources used by the network device to transmit the physical downlink control channel PDCCH at the first time unit, comprising:

32. The apparatus of any of claims 25-27, wherein the determining a second time unit from the PDCCH transmitted in the first time unit is further based on at least one of:

33. A communication device comprising at least one processor and an interface, the at least one processor for executing a computer program, causing the device to implement the method of any one of claims 1 to 16.

34. A communication device, comprising: a processor and a memory;

the memory is used for storing a computer program;

the processor is configured to execute the computer program stored in the memory, so that the apparatus implements the method according to any one of claims 1 to 16.

35. 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.