Communication method and device and storage medium

Abstract

The embodiment of the invention provides a communication method and device and a storage medium, relates to the technical field of communication, and is used for reducing blind detection of a PDCCH (Physical Downlink Control Channel). The method comprises the following steps: receiving a first indication message, wherein the first indication message is used for indicating parameters for monitoring a physical downlink control channel (PDCCH); and processing the PDCCH based on the first indication message.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a communication method, device, and storage medium. Background Art

[0002] Before data transmission between a network device and a terminal begins, the network device sends a physical downlink control channel (PDCCH) to the terminal. The terminal then monitors the PDCCH to obtain downlink control information (DCI). However, currently, the terminal's PDCCH monitoring often involves blind detection, resulting in high power consumption. Summary of the Invention

[0003] Embodiments of the present disclosure provide a communication method, apparatus, and storage medium for reducing blind detection of a PDCCH.

[0004] In order to achieve the above objectives, the present disclosure adopts the following technical solutions:

[0005] In a first aspect, a communication method is provided, applied to a first node, the method comprising:

[0006] receiving a first indication message, where the first indication message is used to determine a parameter of a PDCCH;

[0007] Based on the first indication message, the PDCCH is processed.

[0008] In a second aspect, a communication method is provided, applied to a second node, the method comprising:

[0009] Sending a first indication message, where the first indication message is used to determine parameters of the PDCCH;

[0010] Based on the first indication message, the PDCCH is processed.

[0011] According to a third aspect, a communication device is provided, applied to a first node, the device including:

[0012] A receiving unit, configured to receive a first indication message, where the first indication message is used to determine a parameter of a PDCCH;

[0013] The processing unit is configured to process the PDCCH based on the first indication message.

[0014] In a fourth aspect, a communication device is provided, applied to a second node, the device including:

[0015] A sending unit, configured to send a first indication message, where the first indication message is used to determine a parameter of a PDCCH;

[0016] The processing unit is configured to process the PDCCH based on the first indication message.

[0017] In a fifth aspect, a communication device is provided, comprising: a processor and a memory; the memory and the processor are coupled; the memory is used to store instructions executable by the processor, and the memory stores instructions executable by the processor; when the processor is configured to execute the instructions, the communication device implements the method provided in any one of the first or second aspects above.

[0018] In a sixth aspect, a computer-readable storage medium is provided, which stores computer instructions. When the computer instructions are executed on a computer, the computer executes the method provided in either the first aspect or the second aspect.

[0019] In a seventh aspect, a computer program product comprising computer instructions is provided, which, when executed on a computer, enables the computer to execute the method provided in either the first aspect or the second aspect.

[0020] In the embodiment of the present disclosure, the first node processes the PDCCH based on the PDCCH parameters indicated by the first indication message, which helps to improve the performance of detecting the PDCCH, reduce the number of blind detections of the PDCCH, and reduce the power consumption of the first node. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solution of the present invention and do not constitute a limitation to the technical solution of the present invention.

[0022] Figure 1 A schematic diagram of the structure of a communication system provided in an embodiment of the present disclosure;

[0023] Figure 2 A flow chart of a communication method provided in an embodiment of the present disclosure;

[0024] Figure 3 A schematic diagram of a PDCCH monitoring opportunity provided by an embodiment of the present disclosure;

[0025] Figure 4 A schematic diagram of another PDCCH monitoring opportunity provided by an embodiment of the present disclosure;

[0026] Figure 5 A schematic diagram of the first type of indication information provided by an embodiment of the present disclosure;

[0027] Figure 6 Another schematic diagram of the first type of indication information provided by an embodiment of the present disclosure;

[0028] Figure 7Another schematic diagram of PDCCH monitoring opportunity provided by an embodiment of the present disclosure;

[0029] Figure 8 A schematic diagram of the PDCCH structure provided by an embodiment of the present disclosure;

[0030] Figure 9 A schematic diagram of information carried by DMRS for indicating information of the PDSCH scheduled by PDCCH provided by an embodiment of the present disclosure;

[0031] Figure 10 A schematic diagram of chained scheduling between PDCCH and PDSCH provided by an embodiment of the present disclosure;

[0032] Figure 11 A schematic diagram of the process of another communication method provided by an embodiment of the present disclosure;

[0033] Figure 12 A schematic diagram of the composition of a communication device provided by an embodiment of the present disclosure;

[0034] Figure 13 A schematic diagram of the composition of another communication device provided by an embodiment of the present disclosure;

[0035] Figure 14 A schematic diagram of the structure of a communication device provided by an embodiment of the present disclosure. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

[0037] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular form "comprises" and the present participle form "comprising", are to be construed in an open, inclusive sense, i.e., "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example", or "some examples", etc., are intended to indicate that the specific features, structures, materials, or characteristics related to the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials, or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0039] In the description of the present disclosure, unless otherwise specified, the meaning of "plural" is two or more.

[0040] In the embodiments of the present disclosure, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present disclosure should not be construed as more preferred or more advantageous than other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0041] In addition, the use of "based on" means open and inclusive, because a process, step, calculation, or other action "based on" one or more of the stated conditions or values may, in practice, be based on additional conditions or values beyond those stated.

[0042] With the continuous development of communication technologies, from the second-generation mobile communication technology to the fifth-generation mobile communication technology, the performance and efficiency of communication systems have been significantly improved. However, with the continuous growth of people's communication needs, existing communication technologies have become difficult to meet the increasingly complex communication requirements. Especially in urban environments, high-rise buildings, dense crowds, and diverse service demands pose huge challenges to communication. Therefore, to meet future communication needs, communication methods for the sixth-generation mobile communication technology (6G) urgently need to be proposed and implemented.

[0043] In current communication methods, the accuracy of monitoring the Physical Downlink Control Channel (PDCCH) is not high, resulting in a large number of blind detections by the terminal and high power consumption of the terminal. How to improve the accuracy of monitoring the PDCCH in the context of 6G is an urgent problem to be solved.

[0044] Based on this, the embodiments of the present disclosure provide a communication method, apparatus, and storage medium. The first node processes the PDCCH based on the parameters of monitoring the PDCCH indicated by the first indication message, improving the accuracy of monitoring the PDCCH in the context of 6G, thereby reducing the number of blind detections of the first node and helping to reduce the power consumption of the first node.

[0045] The solutions of the embodiments of the present disclosure will be introduced below with reference to the accompanying drawings.

[0046] The technical solutions provided by the embodiments of the present disclosure can be applied to various mobile communication networks. For example, the new radio (NR) mobile communication network using the fifth-generation mobile communication technology (5G), future mobile communication networks (6G wireless communication systems), or various communication convergence systems, etc. The embodiments of the present disclosure do not limit this.

[0047] In some embodiments, the technical solutions provided by the embodiments of the present disclosure can be applied to the PDCCH processing for 6G. The processing of the PDCCH includes monitoring, detection, reception, or blind detection.

[0048] Figure 1 The following shows a schematic structural diagram of a communication system provided by an embodiment of the present disclosure. As Figure 1 shown, the communication system includes, but is not limited to, a first node 110 and a second node 120. Among them. Wireless signals can be transmitted, received, and related interactions can be carried out between the first node 110 and the second node 120.

[0049] In a wireless communication scenario, the first node 110 communicates with the second node 120 via a wireless channel. For example, the first node 110 is a terminal, and the second node 120 is a base station, and communication between the terminal and the base station is carried out via a wireless channel. For another example, the first node 110 is a terminal, and the second node 120 is a wireless router, and communication between the wireless router and the terminal is carried out via a wireless channel. For another example, the first node 110 is a first base station, and the second node 120 is a second base station, and communication between the first base station and the second base station is carried out via a wireless channel. For another example, the first node 110 is a first terminal, and the second node 120 is a second terminal, and communication between the first terminal and the second terminal is carried out via a wireless channel. For another example, the first node 110 is a repeater, and the second node 120 is a base station, and communication between the base station and the repeater is carried out via a wireless channel. For another example, the first node 110 is a terminal, and the second node 120 is a repeater, and communication between the repeater and the terminal is carried out via a wireless channel. For another example, the first node 110 is a first repeater, and the second node 120 is a second repeater, and communication between the first repeater and the second repeater is carried out via a wireless channel. For another example, the first node 110 is a base station, and the second node 120 is a satellite, and communication between the satellite and the base station is carried out via a wireless channel. For another example, the first node 110 is a satellite, and the second node 120 is a base station, and communication between the base station and the satellite is carried out via a wireless channel. For another example, the first node 110 is a terminal, and the second node 120 is a satellite, and communication between the satellite and the terminal is carried out via a wireless channel. For another example, the first node 110 is a satellite, and the second node 120 is a terminal, and communication between the terminal and the satellite is carried out via a wireless channel. For another example, the first node 110 is a ground device, and the second node 120 is an aircraft, and communication between the aircraft and the ground device is carried out via a wireless channel. For another example, the first node 110 is a first aircraft, and the second node 120 is a second aircraft, and communication between the first aircraft and the second aircraft is carried out via a wireless channel.

[0050] In the present disclosure, the "first" node, "second" node, "first" mode, "second" mode, "first" method, "second" method, "first" matrix, "second" matrix, "first" part, "second" part, unless otherwise specified, are only used for descriptive distinction and do not represent the front-back or precedence order.

[0051] In the embodiments of the present disclosure, the first node and the second node may also have other names. For example, the first node may also be referred to as the first communication node, and the second node may also be referred to as the second communication node, etc. The embodiments of the present disclosure do not limit this.

[0052] In some embodiments, the above base station may be any one of an evolved Node B (eNB), a next-generation Node B (gNB), a transmission receive point (TRP), a transmission point (TP), a relay node, a reconfigurable intelligent surface (RIS), and some other access nodes. According to the size of the service coverage area provided, the base station can be further divided into a macro base station for providing a macro cell, a micro base station for providing a pico cell, and a femto base station for providing a femto cell. With the continuous evolution of wireless communication technologies, future base stations may also adopt other names.

[0053] In some embodiments, the above terminal may be a device with wireless transceiver functions, such as a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, an augmented reality (AR) / virtual reality (VR) device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), an Internet of Things (IoT) terminal, etc. The specific types of terminals are not limited in the embodiments of the present disclosure.

[0054] It should be understood that Figure 1 is an exemplary structural diagram, Figure 1 The number of devices included in the communication system shown is not limited. For example, the number of the first node and the second node is not limited. And, in addition to Figure 1 the devices shown, Figure 1 the communication system shown may further include other devices, which are not limited herein.

[0055] Next, as Figure 2 shown, embodiments of the present disclosure provide a communication method, which is applied to a first node. The first node may be Figure 1 the first node 110 shown in

[0056] S101. Receive a first indication message.

[0057] S102. Process the PDCCH based on the first indication message.

[0058] Wherein, the first indication message is used to determine the parameters of the PDCCH.

[0059] In some embodiments, in order to improve the performance of the first node in detecting PDCCH or reduce the blind detection times of PDCCH, after configuring the first indication message, the second node sends the first indication message to the first node. Correspondingly, the first node receives the first indication message sent by the second node. For the convenience of description, in the following embodiments, a communication method provided by the embodiments of the present disclosure is exemplified by taking the first node as a terminal and the second node as a base station.

[0060] In some embodiments, according to different first indication messages, the determined PDCCH parameters are different or the rules for processing the PDCCH are different. That is to say, different first indication messages can correspond to different PDCCH parameters or different rules for processing PDCCH.

[0061] In some embodiments, the first indication message is used to determine the PDCCH parameters, including the parameters related to PDCCH; or, the first indication message is equivalent to the PDCCH parameters, that is, the first indication message is the indicated PDCCH parameters. Exemplarily, the first indication message includes the first type of indication information, the second type of indication information, the third type of indication information, and the fourth type of indication information. The above four types of indication information are all parameters related to the processing of PDCCH and can all be referred to as PDCCH parameters.

[0062] In some embodiments, based on different first indication messages, for example, at different time nodes, different start times, different time periods, different cycles, different subcarrier intervals, different offsets, different carriers, different cells, different path or routing nodes, different transmission points, different beams, different physical regions, different virtual cells, different physical cell identities (PCI), different bandwidth parts (BWP), different bands, different frequency-domain bandwidths, the PDCCH processing rules are different, the PDCCH parameter sets are different, or the values of the PDCCH parameters are different. The PDCCH parameter set includes at least one PDCCH parameter, and the information content of the parameter includes the first indication message. Exemplarily, the PDCCH processing rules include the processing of PDCCH based on the first information. For example, when the first information is different, the time-frequency resources are different, the cells are different, the carriers are different, the subcarrier intervals are different, etc.

[0063] In some embodiments, the PDCCH includes a first PDCCH and a second PDCCH, and the first indication message includes first information and second information. The first information includes a first time node, a first start time, a first time period, a first period, a first subcarrier spacing, a first offset, a first carrier, a first cell, a first path or routing node, a first transmission point, a first beam, a first physical area, a first virtual cell, a first PCI, a first BWP, a first band, a first frequency domain bandwidth. The first node can process the first PDCCH according to the above first information. The second information includes a second time node, a second start time, a second time period, a second period, a second subcarrier spacing, a second offset, a second carrier, a second cell, a second path or routing node, a second transmission point, a second beam, a second physical area, a second virtual cell, a second PCI, a second BWP, a second band, a second frequency domain bandwidth. According to the above second information, the second PDCCH is processed. That is, different PDCCHs can be processed based on different information.

[0064] In some embodiments, the first indication information is used to indicate or select parameters of the PDCCH.

[0065] It should be noted that for ease of description, in the embodiments of the present disclosure, the time node, start time, time period, period, subcarrier spacing, offset, carrier, cell, path or routing node, transmission point, beam, physical area, virtual cell, PCI, BWP, band, and frequency domain bandwidth information are uniformly referred to as specific information.

[0066] In some embodiments, determining the PDCCH parameters according to the first indication message further includes at least one of the following:

[0067] Configuring at least one of a specific DCI format, DCI size, aggregation level, number of candidates, subcarrier spacing, frequency domain resources, and candidate position within a time period.

[0068] Configuring at least one of a specific DCI format, DCI size, aggregation level, number of candidates, subcarrier spacing, frequency domain resources, and candidate position at different time nodes.

[0069] Configuring at least one of a specific DCI format, DCI size, aggregation level, number of candidates, frequency domain resources, and candidate position at different PDCCH monitoring opportunities.

[0070] Configure at least one of specific DCI format, DCI size, aggregation level, number of candidates, frequency domain resources, and candidate positions in different search spaces.

[0071] In some embodiments, the parameters of the PDCCH include at least one of the following: value range, list, and candidate value. The first indication message is used to determine at least one value of the parameters of the PDCCH. Exemplarily, at least one of the value range, list, and candidate value is determined by the first indication message. Exemplarily, the first indication message indicates the value range, list, candidate value, or one of the values of the PDCCH-related parameters. Exemplarily, the first indication message indicates or configures the parameters of the PDCCH.

[0072] In some embodiments, the first indication message includes at least one of the following: first type of indication information, second type of indication information, and third type of indication information. Among them, different indication information can be determined based on different parameter sets or the same parameter set. For example, the first type of indication information is determined by the first parameter set, the second type of indication information is determined by the second parameter set, and the third type of indication information is determined by the third parameter set. The first parameter set, the second parameter set, and the third parameter set can be the same parameter set or different parameter sets from each other. For each of the first parameter set, the second parameter set, and the third parameter set, the parameter set includes at least one parameter. The first type of indication information and the second type of indication information can also have other names. For example, the first type of indication information can also be called time domain configuration indication information, and the second type of indication information can also be called frequency domain configuration indication information.

[0073] In some embodiments, the first type of indication information is associated with the second type of indication information and / or the third type of indication information; or, the second type of indication information and / or the third type of indication information is associated with the first type of indication information; or, the first type of indication information includes the second type of indication information and / or the third type of indication information; or, the second type of indication information and / or the third type of indication information includes the first type of indication information; or the second type of indication information and the third type of indication information are associated.

[0074] Exemplarily, the search space, the parameters of the PDCCH are associated with the TRP, associated with the time node, associated with the port information, associated with the cell, associated with the transmission point, or, associated with the beam.

[0075] In some embodiments, the first type of indication information is time information, the second type of indication information and / or the third type of indication information are configured based on time nodes, or associated with time information, or the parameter configuration of the PDCCH includes time information. Exemplarily, the first type of indication information is based on time information, and the PDCCH parameters configured based on time information include the second type of indication information and the third type of indication information based on time. For example, the parameters of the PDCCH determined by the second type of indication information or the third type of indication information take effect at different time nodes.

[0076] In some embodiments, the parameter configuration of the PDCCH is determined based on a specific message in the first indication message, or the parameter configuration of the PDCCH is associated with the specific message in the first indication message.

[0077] In some embodiments, the first type of indication information includes at least one of the following: at least one time node information, at least one time period information, at least one start time, at least one reference time, at least one offset, at least one period, at least one time parameter, at least one subcarrier spacing. Among them, the above time parameter can be used to determine one or more time domain positions for processing the PDCCH; the time node information is used to determine the time domain position of the PDCCH monitoring occasion; the time period information is used to determine the time of the PDCCH monitoring occasion. The time period can be a duration or a time window. The time parameter can be a real number or an integer greater than or equal to 0, and is used to determine a time node, a time domain position, or a time length.

[0078] An exemplary description of the first node processing the PDCCH based on the first indication message is given below.

[0079] As an example, the first node determines the first indication message of the first PDCCH and the second PDCCH, or determines the parameters of the first PDCCH and the second PDCCH, at the first time node and the second time node, or in the first time period and the second time period. The first PDCCH is processed according to the parameters of the first PDCCH at the first time node, and the second PDCCH is processed according to the parameters of the second PDCCH at the second time node.

[0080] As another example, the first node determines the parameters of the first PDCCH according to the first subcarrier spacing (SCS) and / or the first frequency band. The parameters of the second PDCCH are determined according to the second SCS and / or the second frequency band. The first PDCCH is detected according to the first SCS and / or in the first frequency band, and the second PDCCH is detected according to the second SCS and / or in the second frequency band.

[0081] As another example, a first node determines parameters of a first PDCCH based on a first transmission point. A first node determines parameters of a second PDCCH based on a second transmission point. Transmission points include TRPs, cells, beams, neighboring cells, relays, base stations, and the like. Transmission point information includes indexes, numbers, or indications for determining such information. The first PDCCH is detected based on the first transmission point, and the second PDCCH is detected based on the second transmission point.

[0082] In some embodiments, the duration of the PDCCH monitoring opportunity includes at least one of the following: duration, number of PDCCH monitoring opportunities, and time domain resources occupied by one PDCCH monitoring opportunity.

[0083] In some embodiments, the first type of indication information is used to determine at least one time domain location for processing the PDCCH.

[0084] As an example, take the first type of indication information including two time node information as an example, for example, Figure 3 FIG. 1 is a schematic diagram of a PDCCH monitoring opportunity provided by an embodiment of the present disclosure, see Figure 3 The first type of indication information indicates the time domain position of monitoring PDCCH at the first PDCCH monitoring opportunity (ie, time node 1), the time domain position of monitoring PDCCH at the second PDCCH monitoring opportunity (ie, time node 2), and the period between time node 1 and time node 2.

[0085] As another example, taking the first type of indication information including two time period information as an example, for example, Figure 4 FIG. 1 is another schematic diagram of PDCCH monitoring timing provided by an embodiment of the present disclosure, see Figure 4 The first type of indication information indicates the start time and time length of monitoring PDCCH at the first PDCCH monitoring opportunity (that is, time node 1), the start time and time length of monitoring PDCCH at the second PDCCH monitoring opportunity (that is, time node 2), and the period between time node 1 and time node 2.

[0086] In some embodiments, the first type of indication information includes at least one of the following: DCI format; DCI size; number of blind detections; aggregation level; number of candidates; candidate location; interval / period of PDCCH monitoring opportunities; and number of symbols. The blind detection parameter may be the maximum number of blind detections. A candidate refers to a possible PDCCH detection location.

[0087] In some embodiments, the DCI format includes the DCI format for the uplink, different types of DCI formats, etc. The DCI size includes one or more DCI sizes. When the number of blind detections is the maximum number of blind detections, the value of the maximum number of blind detections includes at least one of {4, 8, 16, 24, 28, 36, 44}. The aggregation level includes at least one of {1, 2, 4, 8, 16, 32, 64}. The candidate set position includes 0 to L - 1 or 1 to L, where L is the corresponding aggregation level. The number of symbols includes at least one of {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}.

[0088] In some embodiments, the determination of the candidate set position is related to the aggregation level.

[0089] In some embodiments, the determination of the candidate set position is related to the aggregation level and the number of resources or related to the number of control channel elements (CCEs). Exemplarily, assuming that the total number of CCEs is X, and based on the integer n of X / L, such as rounding down, the candidate set position corresponding to the aggregation level L includes 0 to n - 1.

[0090] In some embodiments, if there are n candidate set positions, the number of bits required is obtained based on log2(n), such as floor(log2(n)). Or the number of bits is n; or the range of the number of bits satisfies being greater than or equal to floor(log2(n)) and less than or equal to n. Based on the first indication message of this number of bits, the parameters of the PDCCH can be determined.

[0091] Exemplarily, in the case where the first type of indication information includes the aggregation level and the candidate set identifier, assuming that the aggregation level is 4 and the candidate set identifier is candidate2, as Figure 5 shown, it is a schematic diagram of a first type of indication information provided by an embodiment of the present disclosure. Refer to Figure 5 , based on the first type of indication information, the first node only needs to detect the DCI at the candidate2 position. In the case where the first indication message or the first type of indication message includes two time nodes, as Figure 6 shown, it is another schematic diagram of the first type of indication information provided by an embodiment of the present disclosure. Refer to Figure 6 , the first node can detect the DCI at the candidate2 position at time node 1 and detect the DCI at the candidate2 position at time node 2.

[0092] It should be noted that the aggregation level is the number of rectangular blocks in the above Figure 5 or Figure 6 .

[0093] In some embodiments, the first node may determine the detection position of the PDCCH based on the aggregation level and the candidate set position.

[0094] In some embodiments, the first type of indication information may further include bitmap information, and the bitmap information is used to indicate the candidate set position.

[0095] In some embodiments, the first type of indication information may further indicate the starting candidate set position, and the first node may determine at least one candidate set position or several consecutive candidate set positions based on the starting candidate set position and the candidate set number for detection.

[0096] In some embodiments, when the first type of indication information includes the candidate set number, the first node may determine the candidate set position based on the candidate set number and a preset rule. For example, if the candidate set number is X, the candidate set number is indicated based on log2X bit, such as ceil(log2(X)) bits. For another example, if the candidate set number is X, it is indicated based on the bitmap information of X bits.

[0097] In some embodiments, the first node may determine the parameters of the PDCCH based on the TRP information, search space identifier, frequency point, control resource set identifier, beam, and candidate set position.

[0098] In some embodiments, the first type of indication information may further include a search space identifier, and the search space identifier is an identifier for determining the PDCCH monitoring occasion.

[0099] In some embodiments, the first type of indication information may further include the duration information of the interval of the PDCCH monitoring occasion. Exemplarily, as Figure 7 shown, it is another schematic diagram of the PDCCH monitoring occasion provided by the embodiments of the present disclosure. Refer to Figure 7 , when the PDCCH monitoring occasion is intermittent at time node 1, the first type of indication information further includes the interval time information (i.e., the Gap interval in Figure 7 ).

[0100] In some embodiments, the first type of indication information may further include the identifier of the first node, and the identifier of the first node is used to determine the candidate set position. Among them, the identifier of the first node includes a modulo operation, such as UE_ID mod candidatenumber, candidate number mod UE_ID. Based on the identifier of the first node, it can be determined on which or which candidate set positions to monitor the PDCCH.

[0101] In some embodiments, the above candidate set positions include at least one of the following: candidate set positions at a specific aggregation level, at least one candidate set position at at least one aggregation level, and candidate set start positions at a specific aggregation level.

[0102] In some embodiments, the above candidate set quantities include at least one of the following: candidate set quantities at a specific aggregation level, and consecutive candidate set quantities.

[0103] In some embodiments, the second type of indication information includes at least one of the following: search space identifier; control resource set identifier (CORESET ID); frequency-domain resource information; BWP information; interleaving information; frequency point; carrier; band information; size of a control channel element (CCE); number of CCEs at an aggregation level; and manner of determining a CCE.

[0104] Exemplarily, the interleaving information is used to determine whether to perform interleaving, including frequency-domain interleaving or time-domain interleaving, and the granularity during interleaving, etc. The control resource set identifier is used to determine the frequency-domain position of the PDCCH monitoring occasion, and the search space identifier is used to determine the time-domain position of the PDCCH monitoring occasion. The BWP information is used to determine the frequency-domain range where the PDCCH is located. The frequency point information is used to determine the frequency point where the PDCCH is located, or the frequency point index information is used to determine the frequency point where the PDCCH is located. The carrier information is used to determine the carrier where the PDCCH is located, including the carrier index. The band information is used to determine the band where the PDCCH is located, including the number index information. The size of a CCE includes the number of CCEs. The number of CCEs at an aggregation level refers to the number of CCEs at a specific aggregation level. The manner of determining a CCE includes determining that one CCE occupies x1 resource element groups (REGs), determining x2 frequency-domain subcarriers, and determining that there are x3 data resource elements (REs) or x4 demodulation reference signal (DMRS) resource elements (REs) among them. The manner of determining a CCE also includes determining the type of CCE, and different types have different RE allocations. Among them, a CCE is the basic unit of a control channel, and it can also have other names.

[0105] In some embodiments, the third type of indication information includes at least one of the following: quasi-colocation (QCL) information; scrambling information of a demodulation reference signal (DMRS); transmission point information; beam configuration information; PCI information; physical area information; virtual cell information; and cell information.

[0106] Exemplarily, the transmission point information includes transmitter receiver point (TRP) information, cell, beam, neighbor cell, relay, base station information, etc. The transmission point information may also include an index or number or indication information for determining the above information.

[0107] Exemplarily, the physical area information is location-based, or location information based on a certain area, or location information based on a certain space, or location information based on a line.

[0108] Exemplarily, the virtual cell information includes: virtual cells defined in a cell free scenario, virtual cells defined under base station configuration, virtual cells defined under core network configuration, virtual cells defined based on beam direction, virtual cells defined based on the sector area of a site, etc.

[0109] In some embodiments, the first indication message further includes a fourth type of indication information, where the fourth type of indication information is used to activate or deactivate at least one of the following: the first type of indication information, the second type of indication information, and the third type of indication information.

[0110] In some embodiments, the first indication message is also a type of information.

[0111] In some embodiments, according to the activation or deactivation signaling, activate or deactivate the first indication message, the parameters of the PDCCH, or the processing of the PDCCH; determine the first indication message, the parameters of the PDCCH, or the processing of the PDCCH according to the DCI signaling, media access control control element (MAC CE) signaling, wake-up signal or sequence. Alternatively, according to the activation or deactivation signaling, activate or deactivate the parameters of the PDCCH, or the processing of the PDCCH, where the activation signaling or deactivation signaling is determined by the first indication message.

[0112] In some embodiments, the activation signaling or deactivation signaling includes RRC signaling, SI, master information block MIB, high-layer signaling, MAC CE signaling, DCI, wake-up signal, sequence.

[0113] Exemplarily, activating or deactivating the first indication message according to an activation signaling or a deactivation signaling includes: activating or deactivating PDCCH monitoring based on specific information, PDCCH monitoring based on first information according to the activation signaling or the deactivation signaling. For example, after receiving the activation signaling, PDCCH monitoring is performed based on time, based on a cell, based on a trajectory or a routing node, based on a subcarrier spacing, based on a frequency point, a BWP or a band. Determining the parameters of the PDCCH includes second type indication information, third type indication information, etc.

[0114] Exemplarily, determining the first indication message, the parameters of the PDCCH, or the processing of the PDCCH according to a DCI signaling, a MAC CE signaling, a wake-up signal or a sequence. Specifically, it includes indicating or activating or deactivating a set of PDCCH parameters according to the DCI signaling, the MAC CE signaling, the wake-up signal or the sequence, indicating or activating or deactivating a set of PDCCH parameters in the first indication message, determining or activating or deactivating the processing of the PDCCH.

[0115] Exemplarily, activating or deactivating the parameters of the PDCCH according to an activation signaling or a deactivation signaling, the parameters of the PDCCH include parameters such as time parameters, resource parameters, etc., and may also include parameters determined according to the first indication message. After activating the PDCCH parameters, the processing of the PDCCH is performed according to the activated PDCCH parameters.

[0116] Exemplarily, activating or deactivating the processing of the PDCCH according to an activation signaling or a deactivation signaling includes activating or deactivating PDCCH monitoring based on specific information. For example, PDCCH monitoring based on a time node, based on a transmission point, based on a routing node, based on a cell, or based on a subcarrier spacing.

[0117] Exemplarily, activating or deactivating the parameters of the PDCCH, or the processing of the PDCCH according to an activation signaling or a deactivation signaling, wherein the activation signaling or the deactivation signaling is determined by the first indication message, including that the processing of the PDCCH is PDCCH monitoring based on specific information, reducing blind detection PDCCH monitoring, PDCCH monitoring under a specific mode or configuration.

[0118] In some embodiments, the parameters of the PDCCH include at least one of the following:

[0119] Downlink control information DCI format;

[0120] DCI size;

[0121] Number of blind detections;

[0122] Aggregation level;

[0123] Number of candidate sets;

[0124] Candidate set position;

[0125] The interval / period of PDCCH monitoring opportunities.

[0126] Number of symbols;

[0127] Search space identifier;

[0128] Control resource set identification;

[0129] Frequency domain resource information;

[0130] BWP information;

[0131] interweaving information;

[0132] frequency;

[0133] The size of the CCE;

[0134] The number of CCEs at the aggregation level; the method for determining CCEs.

[0135] QCL information;

[0136] DMRS scrambling information;

[0137] Transmission point information;

[0138] Beam configuration information;

[0139] PCI information;

[0140] Physical area information;

[0141] Virtual cell information;

[0142] Community information.

[0143] Search space identifier;

[0144] Search space type;

[0145] subcarrier spacing;

[0146] Control resource set identifier;

[0147] Monitoring period;

[0148] offset;

[0149] duration;

[0150] Monitoring symbols;

[0151] Number of candidate sets;

[0152] Aggregation level;

[0153] Frequency band information;

[0154] Carrier / band information;

[0155] Transmission point information or TRP information; Port information;

[0156] DMRS information.

[0157] The parameters of the above PDCCH can be configured by a first indication message or determined by a first indication message.

[0158] In some embodiments, the BWP information includes a subband index, including a BWP index, and the BWP information is used to determine the frequency domain range where the PDCCH is located. The interleaving information includes determining whether to interleave, the interleaving granularity, and interleaving-related parameter information. The frequency point represents at least one frequency point position. The carrier represents at least one carrier, and the carrier information includes index information and secondary cell information. The Band information includes a frequency band index. The size of the CCE represents the number of CCEs. The determination method of the CCE includes forming a CCR according to the number of resource units of the first CCE and the number of resource units of the second CCE, or includes whether the CCEs are continuous or discrete. The transmission point information includes a TRP number or index, PCI, routing node information, or trajectory node information, etc. The port information includes an antenna port number, quantity, beam direction, beam number, or the number of antennas. The DMRS information includes the sequence of DMRS, the information carried by DMRS, the pattern of DMRS, and the time-frequency resource position of DMRS.

[0159] In some communication systems, the PDCCH is mainly used to indicate control information / signaling or to schedule a data channel or a shared channel. Different names can be used, which are not limited herein.

[0160] In some embodiments, after receiving the first indication message, the first node can process the PDCCH based on the parameters of the PDCCH determined by the first indication message. Among them, the first node processing the PDCCH includes at least one of the following: detecting the PDCCH, monitoring the PDCCH, blindly detecting the PDCCH, receiving the PDCCH, etc., which are not limited in the embodiments of the present disclosure.

[0161] In some embodiments, the frequency domain position of receiving the first indication message is the same as the frequency domain position of processing the PDCCH, or the frequency domain position of receiving the first indication message is different from the frequency domain position of processing the PDCCH. It should be understood that the different frequency domain positions of receiving the first indication message and processing the PDCCH can avoid resource competition and meet different coverage performances.

[0162] In an embodiment of the present disclosure, the first node can process the PDCCH based on the parameters of the PDCCH determined by the first indication message, improving the performance of detecting the PDCCH or reducing the number of blind detections of the PDCCH, which helps to reduce the power consumption of the first node.

[0163] In some embodiments, when the first node receives the first indication message, or when the first node processes the PDCCH based on the first indication message, under specific conditions, the first node processes the PDCCH according to the second indication message. Herein, the second indication message can be sent by the second node to the first node, can be pre-configured, or the first indication message can include the second indication message. The embodiments of the present disclosure do not limit this. When the second indication message is sent by the second node to the first node, the second indication message can be sent before the second node sends the first indication message, can be sent after the second node sends the first indication message, or can be sent together with the one included in the first indication message.

[0164] In some embodiments, the second indication message is also default configuration information, pre-defined configuration information.

[0165] In some embodiments, under specific conditions, processing the PDCCH according to the second indication message includes at least one of the following:

[0166] When no downlink control information DCI is detected in processing the PDCCH, process the PDCCH according to the second indication message;

[0167] When DCI is detected in processing the PDCCH, process the PDCCH according to the indication of the DCI and the second indication message;

[0168] When an activation signaling or deactivation signaling is received, process the PDCCH according to the second indication message;

[0169] When an activation or deactivation condition is met, process the PDCCH according to the second indication message;

[0170] When a timer timeout is detected, process the PDCCH according to the second indication message;

[0171] When specific parameters are not met, process the PDCCH according to the second indication message, where the specific parameters include statistical parameters, threshold values, predefined values, or parameter values configured by higher-layer parameters.

[0172] When processing the PDCCH based on Negative Acknowledgment (NACK) feedback information or feedback information of the physical downlink shared channel (PDSCH) without PDCCH scheduling, the PDCCH is processed according to a second indication message.

[0173] When sending specific information, the PDCCH is processed according to a second indication message, and the specific information includes parameters of the PDCCH, NACK feedback information, or result information.

[0174] In some embodiments, the specific information is sent based on at least one of the following: physical uplink control channel (PUCCH), channel state information report (CSI report), report, uplink signal, uplink channel.

[0175] Exemplarily, when processing the PDCCH where DCI / PDCCH is not detected, processing the PDCCH according to a second indication message includes: when DCI is not detected at at least one time node, detecting the PDCCH according to PDCCH parameters configured by RRC, default PDCCH parameters, a first indication message, predefined PDCCH parameters, such as search space, period, offset, aggregation level, number of candidates, frequency domain location, etc.

[0176] Exemplarily, when processing the PDCCH where DCI / PDCCH is not detected, processing the PDCCH according to a second indication message includes: when DCI / PDCCH is not detected at at least one transmission point, cell, carrier, physical area, routing node, detecting the PDCCH according to PDCCH parameters configured by RRC, default PDCCH parameters, a first indication message, and predefined PDCCH parameters. It should be understood that usually, the PDCCH carries DCI.

[0177] Exemplarily, when processing the PDCCH where DCI is detected, processing the PDCCH according to the indication of DCI and a second indication message includes: determining the detection of the PDCCH according to the indication of DCI and information configured by RRC, default configuration or a first indication message. The DCI includes an activation signaling or a deactivation signaling. The activation signaling is used to activate at least one set of PDCCH parameters and detect the PDCCH according to the PDCCH parameters. The deactivation signaling is used to deactivate the current PDCCH processing and fallback to processing the PDCCH based on default and predefined PDCCH parameters.

[0178] Exemplarily, in the case where DCI is detected by processing PDCCH, processing the PDCCH according to the indication of the DCI and the second indication message includes: according to the indication of the DCI, selecting or determining at least one set or one parameter of the PDCCH in the second indication message, and processing the PDCCH according to the parameter of the PDCCH.

[0179] In some embodiments, the first indication message includes the second indication message.

[0180] In some embodiments, the second indication message and the first indication message are different values of the same parameter.

[0181] In some embodiments, the second indication message and the first indication message are respectively configured by separate parameters.

[0182] As a possible example, in the case where an activation condition or a deactivation condition is satisfied, processing the PDCCH according to the second indication message, and the activation or deactivation conditions include conditions based on a timer, ACK / NACK feedback, meeting parameters, meeting threshold parameters, specific parameters being configured, signal strength meeting a threshold, etc.

[0183] As a possible example, based on NACK feedback information or feedback information of a physical downlink shared channel (PDSCH) without PDCCH scheduling, processing the PDCCH according to the second indication message includes: when the PDSCH scheduled by the PDCCH fails to be decoded, NACK is fed back. At this time, the first node has learned from the NACK that it is not suitable to continue processing the PDCCH according to the first indication message. Therefore, based on the NACK feedback information, the first node processes the PDCCH according to the second indication information. Or when the PDCCH decoding fails, the first node is in a discontinuous transmission (DTX) state. At this time, the second node has not received ACK / NACK feedback information and has learned that the first node is not suitable to continue processing the PDCCH according to the first indication message. Therefore, it is necessary to instruct the first node to process the PDCCH according to the second indication information, or the time for the first node to process the PDCCH based on the first indication message exceeds a predefined time, or according to timer overflow, the PDCCH is processed according to the second indication information.

[0184] As a possible example, based on NACK feedback information, processing the PDCCH according to the second indication message includes: the number of NACK feedbacks exceeds a threshold value, there is NACK feedback, or the feedback ratio of ACK is lower than the threshold value. At this time, the first node needs to process the PDCCH according to the signaling of the second node or by itself according to the second indication information.

[0185] As a possible example, in the case of sending specific information, processing the PDCCH according to the second indication information includes: The result information refers to the evaluation result based on AI, or based on a certain mode, or based on the scheduling under a set of PDCCH parameters, including the result of training, the result of supervision, the successful or failed result of scheduling, the result of NACK / ACK feedback, and these results reflect the working performance of the current PDCCH.

[0186] In some embodiments, the second indication message includes at least one of the following: search space identifier; search space type; subcarrier spacing; control resource set identifier; monitoring period; offset; duration; monitoring symbol; number of candidate sets; aggregation level; partial bandwidth BWP; frequency band information; carrier information; transmission point information or TRP information; port information; DMRS information. Among them, the monitoring symbol is used to determine the time-domain symbol where the monitored PDCCH is located.

[0187] In some embodiments, the second indication message may further include a candidate set identifier or a candidate set position. The candidate set identifier may also be referred to as a candidate set index or number and is used to determine the target candidate set.

[0188] In some embodiments, the second indication message includes a default candidate set identifier or position.

[0189] As an example, processing the PDCCH according to the second indication message includes at least one of the following:

[0190] According to the second indication message, process the PDCCH at candidate set positions other than the first candidate set position.

[0191] According to the second indication message, process the PDCCH at candidate set positions other than the candidate set positions with a specific aggregation level.

[0192] Among them, the first candidate set position or the candidate set position with a specific aggregation level is determined according to the first indication message or the first type of indication information. That is to say, the first indication message or the first type of indication information indicates the first candidate set position or the candidate set position with a specific aggregation level.

[0193] In some embodiments, the first indication message is based on at least one of the following indications: DCI, media access control control element (MAC CE) signaling, radio resource control (RRC) signaling, sequence, wake-up signal.

[0194] In some embodiments, the second indication message is configured based on at least one of the following: RRC signaling, system information (SI), master information block (MIB), high-layer signaling, MAC CE signaling, DCI, wake-up signal, sequence.

[0195] It should be noted that in 5G, the DMRS in the synchronization signal block (SSB) is used to indicate the information of the SSB index. In the case of 6G, the DMRS on the PDCCH or other reference signals may carry some PDCCH-related information. Based on this, in some embodiments, the first indication message includes the information carried by the DMRS. The information carried by the DMRS is used to indicate the configuration information of the PDCCH; the configuration information of the PDCCH is used for at least one of the following:

[0196] Used to indicate the number of symbols of the PDCCH. Exemplarily, taking the configuration information of the PDCCH used to indicate the number of symbols of the PDCCH as an example, the number of symbols of the PDCCH includes 1, 2, 3. For example, different indexes of the DMRS are used to indicate that the number of symbols of the PDCCH is 1, 2. For another example, different indexes of the DMRS are used to indicate that the number of symbols of the PDCCH is 2, 3. For another example, different indexes of the DMRS are used to indicate that the number of symbols of the PDCCH is 1, 2, 3, 4. When the number of symbols of the PDCCH is 4, the structure of the PDCCH can be as follows Figure 8 shown: that is, the first X symbols are in the front, and 4 - X symbols are in the back, where X takes 1, 2, 3. Figure 8 Among them, the first X symbols are the first PDCCH, and 4 - X symbols are the second PDCCH.

[0197] Used to indicate the subcarrier spacing of the PDCCH. For example, the subcarrier spacing of the PDCCH can be indicated by the DMRS as 15KHz or 30KHz or 60KHz or 120Khz, or 240KHz or 480KHz or 960KHz. For another example, the SCS1, SCS2 can be indicated by the DMRS, or the SCS1, SCS2, SCS3, SCS4 can be indicated by the DMRS. The starting SCS1, SCS2, SCS3, SCS4 have a multiple relationship.

[0198] For indicating the type of PDCCH, the type of PDCCH includes common or specific; it should be understood that the configuration information of PDCCH is used to indicate the type of PDCCH, that is, to indicate the type of PDCCH by using DMRS, so that when the common synchronization signal (SS) and the specific SS overlap, the type of SS transmitted on this time slot can be determined, thereby reducing the blind detection times of the first node and thus reducing the power consumption of the first node.

[0199] For indicating at least one of the type, size, and format of the DCI carried by the PDCCH; wherein, the type of DCI includes uplink or downlink, specific or common. It should be understood that the configuration information of PDCCH is used to indicate at least one of the type, size, and format of the DCI carried by the PDCCH, that is, to indicate at least one of the type, size, and format of the DCI carried by the PDCCH by using DMRS, which helps to reduce the blind detection times of the first node and thus reduces the power consumption of the first node.

[0200] For indicating the number of PDCCHs.

[0201] In some embodiments, the information carried by DMRS is used to indicate the information of the PDSCH scheduled by the PDCCH; wherein, the information of the PDSCH scheduled by the PDCCH includes at least one of the following:

[0202] Transport block size (TBS);

[0203] Transport block format or pattern;

[0204] Modulation and coding scheme (MCS);

[0205] Modulation order;

[0206] Time domain resource allocation (TDRA);

[0207] Frequency domain resource allocation (FDRA).

[0208] Among them, the transport block size includes at least one TBS. The transport block format or pattern is used to determine at least one parameter set, and the parameter set contains at least one of the following information: TBS, MCS, multiple-input multiple-output layer (MIMO layer), modulation order, maximum TBS, FDRA, TDRA, index information, RV information, HARQ process number, subcarrier spacing.

[0209] It should be noted that the index of the information of the PDSCH scheduled by the PDCCH is configured with a list or group by the second node, and the DMRS indicates one of the indexes or indicates one of them. The information carried by the DMRS is used to indicate the information of the PDSCH scheduled by the PDCCH, and is applicable to extremely small data transmission or fixed-size data transmission, such as voice over internet protocol (VoIP) services. For example, as Figure 9 shown, it is a schematic diagram of the information carried by the DMRS used to indicate the information of the PDSCH scheduled by the PDCCH provided by an embodiment of the present disclosure.

[0210] In some embodiments, the information carried by the PDCCH includes the first scheduling information of the shared channel and / or the PDCCH. Among them, the first scheduling information includes at least one of the following: the first resource, the second resource, the configuration information of the PDCCH, and the scheduling information of the shared channel.

[0211] As an example, the first resource includes at least one of the following: the first time-domain resource; the first number of symbols; the first bitmap information; the first frequency-domain resource; or, the second resource includes at least one of the following: the second time-domain resource; the second number of symbols; the second bitmap information; the second frequency-domain resource. That is to say, when the first resource is the first time-domain resource, the second resource is the second time-domain resource.

[0212] In some embodiments, the first resource and the second resource satisfy at least one of the following:

[0213] The first resource and the second resource are continuous in the frequency domain;

[0214] The first resource and the second resource are continuous in the time domain;

[0215] In the frequency domain, the first resource includes the second resource;

[0216] In the time domain, the first resource includes the second resource;

[0217] The first resource and the second resource do not overlap;

[0218] The first resource and the second resource use the same mapping method;

[0219] The second resource is determined according to the first resource.

[0220] The first resource is used to determine the time-frequency domain resources of the PDCCH, and the second resource is used to determine the time-frequency domain resources of the shared channel;

[0221] The first resource is used to determine the time-frequency domain resources of the shared channel, and the second resource is used to determine the time-frequency domain resources of the PDCCH;

[0222] The first resource is used to determine the time-frequency domain resources of the shared channel and the PDCCH, and the second resource is used to determine the time-frequency domain resources of the PDCCH or the shared channel.

[0223] Among them, the time-frequency domain resources include time domain resources and / or frequency domain resources. The time domain resource position includes the symbol position in the time domain, the starting symbol, and the number of symbols. The frequency domain resource position includes the resource unit in the frequency domain, such as the subcarrier / RE / RB position, the number of resource units, and the starting position of the resource unit. The time-frequency domain resource position includes the resource unit corresponding to the resource, such as the position of the RE.

[0224] In some embodiments, the second resource is determined according to the first resource, including determining a part of the resources belonging to the PDCCH or the PDSCH based on the resources of the PDCCH and the shared channel.

[0225] Exemplarily, the bitmap information (including the first bitmap information and the second bitmap information) is used to indicate one or more symbols or time domain resource units, or one or more RBs, REs, subcarriers, or frequency domain resource units. For example, the time domain resources of one or more symbols in a slot can be indicated in a 14-bit bitmap manner. For example, the frequency domain resources of one or more RBs in a BWP or a bandwidth can be indicated in an N-bit bitmap manner.

[0226] Exemplarily, the information carried by the PDCCH includes the first scheduling information of the shared channel and / or the PDCCH, indicating that the DCI of the first PDCCH indicates the scheduling information of the second PDCCH and / or the PDSCH.

[0227] In some embodiments, the scheduling information of the shared channel includes at least one of the following:

[0228] FDRA;

[0229] TDRA;

[0230] Virtual resource block to physical resource block mapping (VRB-to-PRB mapping);

[0231] New data index (NDI);

[0232] Redundancy version (RV);

[0233] Hybrid automatic repeat request (HARQ) process number;

[0234] Downlink allocation index;

[0235] Transmit power control (TPC) command for scheduled PUCCH;

[0236] PUCCH resource indicator (PUCCH resource indicator);

[0237] PDSCH-to-HARQ feedback timer (PDSCH-to-HARQ_feedback timing indicator);

[0238] Extended cyclic prefix in channel access control (ChannelAccess-CPext);

[0239] Subcarrier spacing.

[0240] In some embodiments, the shared channel is PDSCH. That is, the information carried by PDCCH includes the scheduling information of PDSCH. In this way, chain scheduling of PDCCH and PDSCH is realized. For example, Figure 10 FIG2 is a schematic diagram of chain scheduling of PDCCH and PDSCH provided by an embodiment of the present disclosure. Figure 10 , when the information carried by PDCCH includes the scheduling information of PDSCH and it is known that there is a service, the first node does not need blind detection. In addition, the information carried by PDCCH can also indicate that there is no PDCCH monitoring opportunity for a period of time, and the PDCCH monitoring opportunity will be skipped. The main feature of the information carried by DCCH including the scheduling information of PDSCH is that one PDCCH needs to schedule one PDSCH and one PDCCH. Among them,Figure 10 The "X" in it indicates that there is a problem with the monitoring of the previous PDCCH and blind detection needs to be performed again. In the case where "X" does not appear, the first node can perform PDCCH monitoring based on the scheduling information of the PDSCH, without the need for blind detection or only a lower number of blind detections, which helps to reduce the power consumption of the first node.

[0241] In some embodiments, the information carried by the PDCCH may also indicate that PDCCH monitoring needs to be performed at the next PDCCH monitoring opportunity, or there is a PDCCH transmission at the next PDCCH monitoring opportunity, and the first node needs to perform PDCCH monitoring.

[0242] In some embodiments, the configuration information of the PDCCH includes at least one of the following:

[0243] Search space identifier;

[0244] Search space type;

[0245] Control resource set identifier;

[0246] Monitoring periodicity and offset of the time slot;

[0247] Duration;

[0248] Monitoring symbols within the time slot;

[0249] Number of candidate sets;

[0250] Aggregation level;

[0251] DCI format;

[0252] DCI carrying size;

[0253] Aggregation level;

[0254] Candidate set position;

[0255] Interleaving information;

[0256] Mapping type information;

[0257] DMRS sequence information, such as the index of the sequence.

[0258] In some embodiments, the first indication message includes the scheduling information of the shared channel, or the information carried by the PDCCH includes the scheduling information of the physical shared channel.

[0259] In some embodiments, the first indication message is used to determine the parameters of the PDCCH, and the first indication message includes the scheduling information of the shared channel. The first indication message is carried by the PDCCH or DCI.

[0260] In some embodiments, the first indication message is used to determine the parameters of the PDCCH, and the information carried by the PDCCH includes the scheduling information of the physical shared channel.

[0261] In some embodiments, the shared channel is used to carry one or more DCIs, or the shared channel is used to carry one or more PDCCHs; wherein, the shared channel includes a physical downlink shared channel, and the physical downlink shared channel includes at least two types, a first type of physical shared channel and a second type of physical shared channel.

[0262] In some embodiments, the DCI or PDCCH uses the same mapping method as the shared channel.

[0263] In some embodiments, the physical downlink shared channel is used to carry a PDCCH, or one of the uplink DCI and the downlink DCI.

[0264] In some embodiments, the first type of physical shared channel carries a PDCCH or DCI, and the second physical shared channel carries the scheduled data, or PDSCH.

[0265] In some embodiments, the shared channel is used to carry one DCI or multiple DCIs, wherein the DCI is based on a merged manner, or the DCI is based on an independent manner. Exemplarily, the DCI based on the merged manner means that the information of multiple DCIs is merged together and there is only one DCI. The DCI based on the independent manner means that each DCI has its own cyclic redundancy check (CRC), radio network temporary identifier (RNTI), or the scheduling information of the corresponding shared channel. Exemplarily, the rank of the physical downlink shared channel is 1, the number of antenna ports is 1, the number of resources is less than R, such as 16, and the frequency domain bandwidth is within a certain bandwidth range.

[0266] In some embodiments, the PDCCH includes a first PDCCH and a second PDCCH. When the PDCCH is the first PDCCH, the information carried by the first PDCCH includes the scheduling information of the second PDCCH. Among them, the scheduling information of the PDCCH includes at least one of the following: FDRA; TDRA; mapping from virtual resource blocks to physical resource blocks; new data indicator NDI; redundancy version RV; hybrid automatic repeat request HARQ process number; downlink allocation index; transmission power control TPC command for scheduling the physical uplink control channel PUCCH; PUCCH resource indicator; feedback timer from PDSCH to HARQ; extended cyclic prefix in channel access control; subcarrier spacing. Search space identifier; search space type; control resource set identifier; monitoring periodicity and offset of a time slot; duration; monitoring symbols within a time slot; number of candidate sets; aggregation level; DCI format; DCI carrying size; aggregation level; candidate set position; interleaving information; mapping type information; DMRS sequence information. Number of DCIs; number of blind detections.

[0267] In some embodiments, the first PDCCH and the second PDCCH satisfy at least one of the following relationships:

[0268] The number of symbols of the second PDCCH is greater than or equal to the number of symbols of the first PDCCH;

[0269] The time domain position of the first PDCCH is before the time domain position of the second PDCCH;

[0270] The first PDCCH is mapped according to CCEs, and the second PDCCH is mapped according to PRBs;

[0271] The first PDCCH is mapped according to the first CCEs, and the second PDCCH is mapped according to the second CCEs;

[0272] The first PDCCH corresponds to a first reference signal, and the second PDCCH corresponds to a second reference signal.

[0273] As an example, when the time domain position of the first PDCCH is before the time domain position of the second PDCCH, it can be that the end symbol of the first PDCCH is before the start symbol of the second PDCCH. Among them, a symbol is a time domain resource unit, and symbols include time slots, sub-frames, radio frames and other time units. It also includes time units such as milliseconds, microseconds, seconds, etc.

[0274] As an example, when the first PDCCH is mapped according to CCEs and the second PDCCH is mapped according to PRBs, the basic resource unit of the first PDCCH is CCE, the basic resource unit of the second PDCCH is RE, and the basic resource unit in the frequency domain is RB.

[0275] As an example, the first PDCCH is mapped according to the first CCE, and the second PDCCH is mapped according to the second CCE. It is possible that the number of resource units included in the first CCE is different from that included in the second CCE, such as different RE numbers, different RU numbers, different time-domain symbol numbers, different frequency-domain RE numbers, etc.

[0276] As an example, when the first PDCCH corresponds to the first reference signal and the second PDCCH corresponds to the second reference signal, the pattern, RE number, or position of the resource unit of the first reference signal is different from that of the second reference signal.

[0277] In some embodiments, the second PDCCH is used to schedule a shared channel. Among them, the second PDCCH has the same mapping method, time-domain resource range, frequency-domain resource range, antenna port, or reference signal as the shared channel. Or, the second PDCCH is before the shared channel.

[0278] As a possible example, the above mapping method includes layer mapping, mapping to VRB, VRP mapping to PRB, continuous resource mapping, or discrete resource mapping.

[0279] It should be noted that the time-domain resource range involved in the embodiments of the present disclosure refers to the time-domain range from the smallest time-domain symbol to the largest time-domain symbol, or from the earliest time-domain symbol to the last time-domain symbol. Similarly, the frequency-domain resource range refers to the frequency-domain range from the smallest frequency-domain resource unit to the largest frequency-domain resource unit, such as RB, or from the bottom of the frequency domain to the top of the frequency domain.

[0280] In some embodiments, the first indication message is indicated based on at least one of the following: DCI, MAC CE signaling, RRC signaling, sequence, wake-up signal.

[0281] In some embodiments, as Figure 11 shown, the embodiments of the present disclosure also provide a communication method, which is applied to a second node. The second node may be the second node 120 shown above Figure 1 and the method includes the following steps:

[0282] S201. Send parameters of the first indication message or PDCCH.

[0283] In some embodiments, after the second node configures the first indication message, the second node may send the first indication message to the first node. Among them, the first indication message is used to determine the parameters of the PDCCH.

[0284] In some embodiments, the second node configures the first indication message. It can be that the second node predicts the communication services for a period of time in the future based on artificial intelligence (AI), and then configures the first indication message based on the predicted communication services for the future period of time.

[0285] S202. Process the PDCCH based on the first indication message or the parameters of the PDCCH.

[0286] In some embodiments, the second node processes the PDCCH, including transmitting the PDCCH, sending the PDCCH, etc.

[0287] In some embodiments, according to different first indication messages, the determined parameters of the PDCCH are different or the rules for processing the PDCCH are different; the first indication message includes the first information and the second information, and the first PDCCH can be processed according to the first information, and the second PDCCH can be processed according to the second information; the first indication message is used to indicate or select the parameters of the PDCCH.

[0288] In some embodiments, the first indication message includes at least one of the following: the first type of indication information, the second type of indication information, and the third type of indication information.

[0289] In some embodiments, the first type of indication information is determined by the first parameter set, the second type of indication information is determined by the second parameter set, and the third type of indication information is determined by the third parameter set; wherein, the parameter set includes at least one parameter.

[0290] In some embodiments, the first type of indication information is associated with the second type of indication information and / or the third type of indication information; or, the second type of indication information and / or the third type of indication information is associated with the first type of indication information; or, the first type of indication information includes the second type of indication information and / or the third type of indication information; or, the second type of indication information and / or the third type of indication information includes the first type of indication information; or, the second type of indication information and the third type of indication information are associated.

[0291] In some embodiments, the first type of indication information includes at least one of the following: at least one time node information, at least one time period information, at least one start time, at least one reference time, at least one offset, at least one period, at least one time parameter, at least one subcarrier spacing.

[0292] In some embodiments, the first type of indication information is used to determine at least one time domain position for processing the PDCCH.

[0293] In some embodiments, time parameters are used to determine one or more time-domain positions for processing PDCCH; time node information is used to determine the time-domain position of a PDCCH monitoring occasion; and time period information is used to determine the time of a PDCCH monitoring occasion.

[0294] In some embodiments, the time of a PDCCH monitoring occasion includes at least one of the following: time length, the number of PDCCH monitoring occasions, and the time-domain resources occupied by one PDCCH monitoring occasion.

[0295] In some embodiments, the first type of indication information includes at least one of the following: DCI format; DCI size; number of blind detections; aggregation level; number of candidate sets; candidate set position; interval / period of a PDCCH monitoring occasion; number of symbols.

[0296] In some embodiments, the candidate set position includes at least one of the following: the candidate set position of a specific aggregation level, the at least one candidate set position of at least one aggregation level, and the starting position of the candidate set of a specific aggregation level.

[0297] In some embodiments, the second type of indication information includes at least one of the following: search space identifier; control resource set identifier; frequency-domain resource information; BWP information; interleaving information; frequency point; carrier; band information; size of CCE; number of CCEs of an aggregation level; determination method of CCE.

[0298] In some embodiments, the third type of indication information includes at least one of the following: QCL information; scrambling information of DMRS; transmission point information; beam configuration information; PCI information; physical area information; virtual cell information; cell information.

[0299] In some embodiments, according to an activation signaling or a deactivation signaling, activate or deactivate a first indication message, parameters of PDCCH, or processing of PDCCH; or, determine a first indication message, parameters of PDCCH, or processing of PDCCH according to a downlink control information DCI signaling, a media access control control element MAC CE signaling, a wake-up signal or sequence; or, according to an activation signaling or a deactivation signaling, activate or deactivate parameters of PDCCH, or processing of PDCCH, where the activation signaling or deactivation signaling is determined by the first indication message.

[0300] In some embodiments, the second node may also send a second indication message to the first node, and the second indication message is used to indicate that under specific conditions, process the PDCCH according to the second indication message.

[0301] In some embodiments, when processing the PDCCH and no downlink control information DCI is detected, the PDCCH is processed according to a second indication message; when processing the PDCCH and DCI is detected, the PDCCH is processed according to the indication of the DCI and the second indication message; when an activation signaling or a deactivation signaling is received, the PDCCH is processed according to the second indication message; when an activation condition or a deactivation condition is satisfied, the PDCCH is processed according to the second indication message; when a timer timeout is detected, the PDCCH is processed according to the second indication message; when specific parameters are not satisfied, the PDCCH is processed according to the second indication message, where the specific parameters include statistical parameters, threshold values, predefined values or parameter values configured by higher layer parameters; based on non-acknowledgment NACK feedback information or feedback information of not transmitting a physical downlink shared channel PDSCH scheduled by the PDCCH, the PDCCH is processed according to the second indication message; when specific information is transmitted, the PDCCH is processed according to the second indication information, and the specific information includes parameters of the PDCCH, NACK feedback information, or result information.

[0302] In some embodiments, the second indication message includes at least one of the following: search space identifier; search space type; subcarrier spacing; control resource set identifier; monitoring period; offset; duration; monitoring symbol; number of candidate sets; aggregation level; BWP; frequency band information; carrier information; transmission point information or TRP information; port information; DMRS information.

[0303] In some embodiments, according to the second indication message, the PDCCH is processed at candidate set positions other than the first candidate set position; according to the second indication message, the PDCCH is processed at candidate set positions other than the candidate set positions of a specific aggregation level.

[0304] In some embodiments, the second indication message is configured based on at least one of the following: radio resource control RRC signaling, system information SI, master information block MIB, higher layer signaling, MAC CE signaling, DCI, wake-up signal, sequence.

[0305] In some embodiments, the first indication message includes information carried by the DMRS.

[0306] In some embodiments, the information carried by the DMRS is used to indicate the configuration information of the PDCCH; the configuration information of the PDCCH is used for at least one of the following: used to indicate the number of symbols of the PDCCH; used to indicate the subcarrier spacing of the PDCCH; used to indicate the type of the PDCCH, and the type of the PDCCH includes public or specific; used to indicate at least one of the type, size, format of the DCI carried by the PDCCH; used to indicate the number of PDCCHs.

[0307] In some embodiments, the information carried by DMRS is used to indicate the information of the PDSCH scheduled by PDCCH; the information of the PDSCH scheduled by PDCCH includes at least one of the following: TBS; transport block format or pattern; MCS; modulation order; TDRA; FDRA.

[0308] In some embodiments, the information carried by PDCCH includes the first scheduling information of the shared channel and / or PDCCH.

[0309] In some embodiments, the first scheduling information includes at least one of the following: first resource, second resource, configuration information of PDCCH, scheduling information of the shared channel.

[0310] In some embodiments, the first resource includes at least one of the following: first time-domain resource; first number of symbols; first bitmap information; first frequency-domain resource; or, the second resource includes at least one of the following: second time-domain resource; second number of symbols; second bitmap information; second frequency-domain resource.

[0311] In some embodiments, the first resource and the second resource satisfy at least one of the following: the first resource and the second resource are continuous in the frequency domain; the first resource and the second resource are continuous in the time domain; in the frequency domain, the first resource includes the second resource; in the time domain, the first resource includes the second resource; the first resource and the second resource do not overlap; the first resource and the second resource use the same mapping method; the second resource is determined according to the first resource; the first resource is used to determine the time-frequency resource of PDCCH, and the second resource is used to determine the time-frequency resource of the shared channel; the first resource is used to determine the time-frequency resource of the shared channel, and the second resource is used to determine the time-frequency resource of PDCCH; the first resource is used to determine the time-frequency resources of the shared channel and PDCCH, and the second resource is used to determine the time-frequency resource of PDCCH or the time-frequency resource of the shared channel.

[0312] In some embodiments, the scheduling information of the shared channel includes at least one of the following: FDRA; TDRA; mapping from virtual resource block to physical resource block; NDI; RV; HARQ process number; downlink allocation index; TPC command for scheduling PUCCH; PUCCH resource indicator; feedback timer from PDSCH to HARQ; extended cyclic prefix in channel access control; subcarrier spacing.

[0313] In some embodiments, the first indication message includes the scheduling information of the shared channel, or the information carried by PDCCH includes the scheduling information of the physical shared channel.

[0314] In some embodiments, the shared channel is used to carry one or more DCI, or the shared channel is used to carry one or more PDCCH; wherein, the shared channel includes a physical downlink shared channel, and the physical downlink shared channel includes at least two types, a first type of physical shared channel and a second type of physical shared channel.

[0315] In some embodiments, the above DCI is used to indicate the scheduling information of the first type of physical shared channel.

[0316] In some embodiments, the PDCCH is a first PDCCH, and the information carried by the first PDCCH includes the scheduling information of the second PDCCH.

[0317] In some embodiments, the first PDCCH and the second PDCCH satisfy at least one of the following relationships: the number of symbols of the second PDCCH is greater than or equal to the number of symbols of the first PDCCH; the time domain position of the first PDCCH is before the time domain position of the second PDCCH; the first PDCCH is mapped according to CCE, and the second PDCCH is mapped according to a physical resource block PRB; the first PDCCH is mapped according to a first CCE, and the second PDCCH is mapped according to a second CCE; the first PDCCH corresponds to a first reference signal, and the second PDCCH corresponds to a second reference signal.

[0318] In some embodiments, the second PDCCH is used to schedule the shared channel, wherein the second PDCCH has the same mapping method, time domain resource range, frequency domain resource range, antenna port, or reference signal as the shared channel; or the second PDCCH is before the shared channel.

[0319] In some embodiments, the first indication message is based on at least one of the following indications: DCI, MAC CE signaling, RRC signaling, sequence, wake-up signal.

[0320] It should be noted that for the specific description of the first indication message, reference can be made to the corresponding description in the above Figure 2 illustrated embodiments, which will not be elaborated here.

[0321] In the embodiments of the present disclosure, the second node sends a first indication message to the first node to instruct the first node to process the PDCCH based on the parameters of the PDCCH indicated by the first indication message, which helps to improve the performance of detecting the PDCCH, reduce the blind detection of the PDCCH, and reduce the power consumption of the first node.

[0322] The above mainly introduces the solution provided by the present disclosure from the perspective of the interaction between each node. It can be understood that in order to implement the above functions, each node, such as the first node or the second node, includes the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that in combination with the algorithm steps of each example described in the embodiments disclosed herein, the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present disclosure.

[0323] The embodiments of the present disclosure can divide the functional modules of the first node or the second node according to the above method embodiments. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one functional module. The above integrated module can be implemented in the form of hardware or software. It should be noted that the division of modules in the embodiments of the present disclosure is illustrative, only a logical function division, and there may be other division methods in actual implementation. The following takes the example of dividing each functional module corresponding to each function for illustration.

[0324] Figure 12 It is a schematic diagram of the composition of a communication device provided by an embodiment of the present disclosure. As Figure 12 shown, the communication device 30 includes a receiving unit 301 and a processing unit 302.

[0325] The communication device 30 can be the above-mentioned first node or a chip in the first node. When the communication device 30 is used to implement the functions of the first node in the above embodiments, each unit is specifically used to implement the following functions.

[0326] The receiving unit 301 is used to receive a first indication message, and the first indication message is used to determine the parameters of the physical PDCCH;

[0327] The processing unit 302 is used to process the PDCCH based on the first indication message.

[0328] In some embodiments, according to different first indication messages, the determined parameters of the PDCCH are different or the rules for processing the PDCCH are different; the first indication message includes first information and second information, and the first PDCCH is processed according to the first information, and the second PDCCH is processed according to the second information; the first indication message is used to indicate or select the parameters of the PDCCH.

[0329] In some embodiments, the first indication message includes at least one of the following: first type indication information, second type indication information, and third type indication information.

[0330] In some embodiments, the first type indication information is determined by a first parameter set, the second type indication information is determined by a second parameter set, and the third type indication information is determined by a third parameter set; wherein, the parameter set includes at least one parameter.

[0331] In some embodiments, the first type indication information is associated with the second type indication information and / or the third type indication information; or, the second type indication information and / or the third type indication information is associated with the first type indication information; or, the first type indication information includes the second type indication information and / or the third type indication information; or, the second type indication information and / or the third type indication information includes the first type indication information; or, the second type indication information and the third type indication information are associated.

[0332] In some embodiments, the first type indication information includes at least one of the following: at least one time node information, at least one time period information, at least one start time, at least one reference time, at least one offset, at least one period, at least one time parameter, at least one subcarrier spacing.

[0333] In some embodiments, the first type indication information is used to determine at least one time domain position for processing the PDCCH.

[0334] In some embodiments, the time parameter is used to determine one or more time domain positions for processing the PDCCH; the time node information is used to determine the time domain position of the PDCCH monitoring occasion; the time period information is used to determine the time of the PDCCH monitoring occasion.

[0335] In some embodiments, the time of the PDCCH monitoring occasion includes at least one of the following: time length, number of PDCCH monitoring occasions, time domain resources occupied by one PDCCH monitoring occasion.

[0336] In some embodiments, the first type indication information includes at least one of the following: DCI format; DCI size; number of blind detections; aggregation level; number of candidate sets; candidate set position; interval / period of the PDCCH monitoring occasion; number of symbols.

[0337] In some embodiments, the candidate set position includes at least one of the following: candidate set position for a specific aggregation level, at least one candidate set position for at least one aggregation level, candidate set start position for a specific aggregation level.

[0338] In some embodiments, the second type of indication information includes at least one of the following: search space identifier; control resource set identifier; frequency-domain resource information; BWP information; interleaving information; frequency point; carrier; band information; size of CCE; number of CCEs with aggregation level; determination method of CCE.

[0339] In some embodiments, the third type of indication information includes at least one of the following: QCL information; scrambling information of DMRS; transmission point information; beam configuration information; PCI information; physical area information; virtual cell information; cell information.

[0340] In some embodiments, according to an activation signaling or a deactivation signaling, activate or deactivate a first indication message, parameters of PDCCH, or processing of PDCCH; or, determine a first indication message, parameters of PDCCH, or processing of PDCCH according to a downlink control information DCI signaling, a media access control control element MAC CE signaling, a wake-up signal or sequence; or, according to an activation signaling or a deactivation signaling, activate or deactivate parameters of PDCCH, or processing of PDCCH, where the activation signaling or deactivation signaling is determined by the first indication message.

[0341] In some embodiments, the processing unit 302 is further configured to process PDCCH according to a second indication message under specific conditions.

[0342] In some embodiments, the processing unit 302 is specifically configured to perform at least one of the following: process PDCCH according to the second indication message when downlink control information DCI is not detected in the processing of PDCCH; process PDCCH according to the indication of DCI and the second indication message when DCI is detected in the processing of PDCCH; process PDCCH according to the second indication message when an activation signaling or a deactivation signaling is received; process PDCCH according to the second indication message when an activation condition or a deactivation condition is met; process PDCCH according to the second indication message when a timer timeout is detected; process PDCCH according to the second indication message when specific parameters are not met, where the specific parameters include statistical parameters, threshold values, predefined values or parameter values configured by a high-layer parameter; process PDCCH according to the second indication message based on non-acknowledgment NACK feedback information or feedback information of not transmitting a physical downlink shared channel PDSCH scheduled by PDCCH; process PDCCH according to the second indication information when specific information is transmitted, where the specific information includes parameters for monitoring PDCCH, NACK feedback information, or result information.

[0343] In some embodiments, the second indication message includes at least one of the following: search space identifier; search space type; subcarrier spacing; control resource set identifier; monitoring periodicity; offset; duration; monitoring symbols within a time slot; number of candidate sets; aggregation level; partial bandwidth BWP; frequency band information; carrier information; transmission point information or TRP information; port information; DMRS information.

[0344] In some embodiments, the processing unit 302 is specifically configured to perform at least one of the following: process the PDCCH at a candidate set position other than the first candidate set position according to the second indication message; process the PDCCH at a candidate set position other than the candidate set position of a specific aggregation level according to the second indication message.

[0345] In some embodiments, the first candidate set position or the candidate set position of a specific aggregation level is determined according to the first indication message.

[0346] In some embodiments, the second indication message is configured based on at least one of the following: radio resource control RRC signaling, system information SI, master information block MIB, high-layer signaling, MAC CE signaling, DCI, wake-up signal, sequence.

[0347] In some embodiments, the first indication message includes information carried by the DMRS.

[0348] In some embodiments, the information carried by the DMRS is used to indicate the configuration information of the PDCCH; the configuration information of the PDCCH is used for at least one of the following: to indicate the number of symbols of the PDCCH; to indicate the subcarrier spacing of the PDCCH; to indicate the type of the PDCCH, where the type of the PDCCH includes common or specific; to indicate at least one of the type, size, and format of the DCI carried by the PDCCH; to indicate the number of PDCCHs.

[0349] In some embodiments, the information carried by the DMRS is used to indicate the information of the PDSCH scheduled by the PDCCH; the information of the PDSCH scheduled by the PDCCH includes at least one of the following: transport block size TBS; transport block format or pattern; modulation and coding scheme MCS; modulation order; time-domain resource allocation TDRA; frequency-domain resource allocation FDRA.

[0350] In some embodiments, the information carried by the PDCCH includes the first scheduling information of the shared channel and / or the PDCCH.

[0351] In some embodiments, the first scheduling information includes at least one of the following: first resource, second resource, configuration information of the PDCCH, scheduling information of the shared channel.

[0352] In some embodiments, the first resource includes at least one of the following: first time-domain resource; first number of symbols; first bitmap information; first frequency-domain resource; or, the second resource includes at least one of the following: second time-domain resource; second number of symbols; second bitmap information; second frequency-domain resource.

[0353] In some embodiments, the first resource and the second resource satisfy at least one of the following: the first resource and the second resource are continuous in the frequency domain; the first resource and the second resource are continuous in the time domain; in the frequency domain, the first resource includes the second resource; in the time domain, the first resource includes the second resource; the first resource and the second resource do not overlap; the first resource and the second resource use the same mapping method; the second resource is determined according to the first resource; the first resource is used to determine the time-frequency resource of the PDCCH, and the second resource is used to determine the time-frequency resource of the shared channel; the first resource is used to determine the time-frequency resource of the shared channel, and the second resource is used to determine the time-frequency resource of the PDCCH; the first resource is used to determine the time-frequency resources of the shared channel and the PDCCH, and the second resource is used to determine the time-frequency resource of the PDCCH or the time-frequency resource of the shared channel.

[0354] In some embodiments, the scheduling information of the shared channel includes at least one of the following: FDRA; TDRA; mapping from virtual resource block to physical resource block; new data indicator NDI; redundancy version RV; hybrid automatic repeat request HARQ process number; downlink allocation index; transmission power control TPC command for scheduling the physical uplink control channel PUCCH; PUCCH resource indicator; feedback timer from PDSCH to HARQ; extended cyclic prefix in channel access control; subcarrier spacing.

[0355] In some embodiments, the configuration information of the PDCCH includes at least one of the following: search space identifier; search space type; control resource set identifier; monitoring periodicity and offset of the time slot; duration; monitoring symbols within the time slot; number of candidate sets; aggregation level; DCI format; DCI bearing size; aggregation level; candidate set position; interleaving information; mapping type information; DMRS sequence information.

[0356] In some embodiments, the first indication message includes the scheduling information of the shared channel, or the information carried by the PDCCH includes the scheduling information of the physical shared channel.

[0357] In some embodiments, the shared channel is used to carry one or more DCIs, or the shared channel is used to carry one or more PDCCHs; wherein, the shared channel includes a physical downlink shared channel, and the physical downlink shared channel includes at least two types, the first type of physical shared channel and the second type of physical shared channel.

[0358] In some embodiments, the above DCI is used to indicate the scheduling information of the first type of physical shared channel.

[0359] In some embodiments, the PDCCH is the first PDCCH, and the information carried by the first PDCCH includes the scheduling information of the second PDCCH.

[0360] In some embodiments, the first PDCCH and the second PDCCH satisfy at least one of the following relationships: the number of symbols of the second PDCCH is greater than or equal to the number of symbols of the first PDCCH; the time domain position of the first PDCCH is before the time domain position of the second PDCCH; the first PDCCH is mapped according to CCE, and the second PDCCH is mapped according to physical resource block PRB; the first PDCCH is mapped according to the first CCE, and the second PDCCH is mapped according to the second CCE; the first PDCCH corresponds to the first reference signal, and the second PDCCH corresponds to the second reference signal.

[0361] In some embodiments, the second PDCCH is used to schedule the shared channel, where the second PDCCH and the shared channel have the same mapping method, time domain resource range, frequency domain resource range, antenna port, or reference signal; or the second PDCCH is before the shared channel.

[0362] In some embodiments, the first indication message is based on at least one of the following indications: DCI, MAC CE signaling, RRC signaling, sequence, wake-up signal.

[0363] Figure 13 It is a schematic diagram of the composition of another communication device provided by the embodiments of the present disclosure. As Figure 13 shown, the communication device 40 includes a sending unit 401 and a processing unit 402.

[0364] The communication device 40 can be the above-mentioned second node or a chip in the second node. When the communication device 40 is used to implement the functions of the second node in the above embodiments, each unit is specifically used to implement the following functions.

[0365] The sending unit 401 is used to send a first indication message, and the first indication message is used to determine the parameters of the PDCCH;

[0366] The processing unit 402 is used to process the PDCCH based on the first indication message.

[0367] In some embodiments, according to different first indication messages, the determined parameters of the PDCCH are different or the rules for processing the PDCCH are different; the first indication message includes the first information and the second information, and the first PDCCH is processed according to the first information, and the second PDCCH is processed according to the second information; the first indication message is used to indicate or select the parameters of the PDCCH.

[0368] In some embodiments, the first indication message includes at least one of the following: first type indication information, second type indication information, and third type indication information.

[0369] In some embodiments, the first type indication information is determined by a first parameter set, the second type indication information is determined by a second parameter set, and the third type indication information is determined by a third parameter set; wherein, the parameter set includes at least one parameter.

[0370] In some embodiments, the first type indication information is associated with the second type indication information and / or the third type indication information; or, the second type indication information and / or the third type indication information is associated with the first type indication information; or, the first type indication information includes the second type indication information and / or the third type indication information; or, the second type indication information and / or the third type indication information includes the first type indication information; or, the second type indication information and the third type indication information are associated.

[0371] In some embodiments, the first type indication information includes at least one of the following: at least one time node information, at least one time period information, at least one start time, at least one reference time, at least one offset, at least one period, at least one time parameter, at least one subcarrier spacing.

[0372] In some embodiments, the first type indication information is used to determine at least one time domain position for processing the PDCCH.

[0373] In some embodiments, the time parameter is used to determine one or more time domain positions for processing the PDCCH; the time node information is used to determine the time domain position of the PDCCH monitoring occasion; the time period information is used to determine the time of the PDCCH monitoring occasion.

[0374] In some embodiments, the time of the PDCCH monitoring occasion includes at least one of the following: time length, number of PDCCH monitoring occasions, time domain resources occupied by one PDCCH monitoring occasion.

[0375] In some embodiments, the first type indication information includes at least one of the following: downlink control information DCI format; DCI size; number of blind detections; aggregation level; number of candidate sets; candidate set position; interval / period of the PDCCH monitoring occasion; number of symbols.

[0376] In some embodiments, the candidate set position includes at least one of the following: candidate set position of a specific aggregation level, at least one candidate set position of at least one aggregation level, candidate set start position of a specific aggregation level.

[0377] In some embodiments, the second type of indication information includes at least one of the following: search space identifier; control resource set identifier; frequency-domain resource information; BWP information; interleaving information; frequency point; carrier; band information; size of CCE; number of CCEs with an aggregation level; determination method of CCE.

[0378] In some embodiments, the third type of indication information includes at least one of the following: QCL information; scrambling information of DMRS; transmission point information; beam configuration information; PCI information; physical area information; virtual cell information; cell information.

[0379] In some embodiments, according to an activation signaling or a deactivation signaling, activate or deactivate a first indication message, parameters of a PDCCH, or processing of a PDCCH; or, determine a first indication message, parameters of a PDCCH, or processing of a PDCCH according to a downlink control information DCI signaling, a media access control control element MAC CE signaling, a wake-up signal or sequence; or, according to an activation signaling or a deactivation signaling, activate or deactivate parameters of a PDCCH, or processing of a PDCCH, where the activation signaling or the deactivation signaling is determined by the first indication message.

[0380] In some embodiments, the sending unit 401 is further configured to send a second indication message, where the second indication message is used to indicate that under specific conditions, a PDCCH is processed according to the second indication message.

[0381] In some embodiments, processing a PDCCH according to the second indication message under specific conditions includes at least one of the following: in a case where downlink control information DCI is not detected when processing a PDCCH, processing the PDCCH according to the second indication message; in a case where DCI is detected when processing a PDCCH, processing the PDCCH according to an indication of the DCI and the second indication message; in a case where an activation signaling or a deactivation signaling is received, processing the PDCCH according to the second indication message; in a case where an activation condition or a deactivation condition is satisfied, processing the PDCCH according to the second indication message; in a case where a timer timeout is detected, processing the PDCCH according to the second indication message; in a case where specific parameters are not satisfied, processing the PDCCH according to the second indication message, where the specific parameters include statistical parameters, threshold values, predefined values, or parameter values configured by a high-layer parameter; based on non-acknowledgment NACK feedback information or feedback information of not sending a physical downlink shared channel PDSCH scheduled by a PDCCH, processing the PDCCH according to the second indication message; in a case of sending specific information, processing the PDCCH according to the second indication information, where the specific information includes parameters for monitoring a PDCCH, NACK feedback information, or result information.

[0382] In some embodiments, the second indication message includes at least one of the following: search space identifier; search space type; subcarrier spacing; control resource set identifier; monitoring periodicity; offset; duration; monitoring symbols within a time slot; number of candidate sets; aggregation level; partial bandwidth BWP; frequency band information; carrier information; transmission point information or TRP information; port information; DMRS information.

[0383] In some embodiments, processing the PDCCH according to the second indication message includes at least one of the following: processing the PDCCH at a candidate set position other than the first candidate set position according to the second indication message; processing the PDCCH at a candidate set position other than the candidate set position of a specific aggregation level according to the second indication message.

[0384] In some embodiments, the first candidate set position or the candidate set position of a specific aggregation level is determined according to the first indication message.

[0385] In some embodiments, the second indication message is configured based on at least one of the following: radio resource control RRC signaling, system information SI, master information block MIB, high-layer signaling, media access control control element MAC CE signaling, DCI, wake-up signal, sequence.

[0386] In some embodiments, the first indication message includes information carried by the DMRS.

[0387] In some embodiments, the information carried by the DMRS is used to indicate the configuration information of the PDCCH; the configuration information of the PDCCH is used for at least one of the following: used to indicate the number of symbols of the PDCCH; used to indicate the subcarrier spacing of the PDCCH; used to indicate the type of the PDCCH, and the type of the PDCCH includes common or specific; used to indicate at least one of the type, size, and format of the DCI carried by the PDCCH; used to indicate the number of PDCCHs.

[0388] In some embodiments, the information carried by the DMRS is used to indicate the information of the PDSCH scheduled by the PDCCH; the information of the PDSCH scheduled by the PDCCH includes at least one of the following: TBS; transport block format or pattern; MCS; modulation order; TDRA; FDRA.

[0389] In some embodiments, the information carried by the PDCCH includes the first scheduling information of the shared channel and / or the PDCCH.

[0390] In some embodiments, the first scheduling information includes at least one of the following: first resource, second resource, configuration information of the PDCCH, scheduling information of the shared channel.

[0391] In some embodiments, the first resource includes at least one of the following: a first time-domain resource; a first number of symbols; a first bitmap information; a first frequency-domain resource; or, the second resource includes at least one of the following: a second time-domain resource; a second number of symbols; a second bitmap information; a second frequency-domain resource.

[0392] In some embodiments, the first resource and the second resource satisfy at least one of the following: the first resource and the second resource are continuous in the frequency domain; the first resource and the second resource are continuous in the time domain; in the frequency domain, the first resource includes the second resource; in the time domain, the first resource includes the second resource; the first resource and the second resource do not overlap; the first resource and the second resource use the same mapping method; the second resource is determined according to the first resource; the first resource is used to determine the time-frequency domain resources of the PDCCH, and the second resource is used to determine the time-frequency domain resources of the shared channel; the first resource is used to determine the time-frequency domain resources of the shared channel, and the second resource is used to determine the time-frequency domain resources of the PDCCH; the first resource is used to determine the time-frequency domain resources of the shared channel and the PDCCH, and the second resource is used to determine the time-frequency domain resources of the PDCCH or the time-frequency domain resources of the shared channel.

[0393] In some embodiments, the scheduling information of the shared channel includes at least one of the following: FDRA; TDRA; mapping from virtual resource blocks to physical resource blocks; new data indicator NDI; redundancy version RV; hybrid automatic repeat request HARQ process number; downlink allocation index; transmission power control TPC command for scheduling the physical uplink control channel PUCCH; PUCCH resource indicator; feedback timer from PDSCH to HARQ; extended cyclic prefix in channel access control; subcarrier spacing.

[0394] In some embodiments, the configuration information of the PDCCH includes at least one of the following: search space identifier; search space type; control resource set identifier; monitoring periodicity and offset of the slot; duration; monitoring symbols within the slot; number of candidate sets; aggregation level; DCI format; DCI bearer size; aggregation level; candidate set position; interleaving information; mapping type information; DMRS sequence information.

[0395] In some embodiments, the first indication message includes the scheduling information of the shared channel, or the information carried by the PDCCH includes the scheduling information of the physical shared channel.

[0396] In some embodiments, the shared channel is used to carry one or more DCIs, or the shared channel is used to carry one or more PDCCHs; wherein, the shared channel includes a physical downlink shared channel, and the physical downlink shared channel includes at least two types, a first type of physical shared channel and a second type of physical shared channel.

[0397] In some embodiments, the above DCI is used to indicate the scheduling information of the first type of physical shared channel.

[0398] In some embodiments, the PDCCH is the first PDCCH, and the information carried by the first PDCCH includes the scheduling information of the second PDCCH.

[0399] In some embodiments, the first PDCCH and the second PDCCH satisfy at least one of the following relationships: the number of symbols of the second PDCCH is greater than or equal to the number of symbols of the first PDCCH; the time domain position of the first PDCCH is before the time domain position of the second PDCCH; the first PDCCH is mapped according to CCE, and the second PDCCH is mapped according to physical resource block PRB; the first PDCCH is mapped according to the first CCE, and the second PDCCH is mapped according to the second CCE; the first PDCCH corresponds to the first reference signal, and the second PDCCH corresponds to the second reference signal.

[0400] In some embodiments, the second PDCCH is used to schedule the shared channel, where the second PDCCH has the same mapping method, time domain resource range, frequency domain resource range, antenna port, or reference signal as the shared channel; or the second PDCCH is before the shared channel.

[0401] In some embodiments, the first indication message is indicated based on at least one of the following: DCI, MAC CE signaling, RRC signaling, sequence, wake-up signal.

[0402] It should be noted that Figure 12 and Figure 13 the units in Figure 12 and Figure 13 can also be referred to as modules. For example, the sending unit can be referred to as a sending module. Additionally, in the embodiments shown in <>

[0403] Figure 12 and Figure 13When each unit in [the above] is implemented in the form of a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiments of the present disclosure, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods of the various embodiments of the present disclosure. The storage medium storing the computer software product includes: various media such as USB flash drives, external hard drives, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.

[0404] When the above communication device 30 or communication device 40 implements the functions of the above integrated modules in hardware form, the embodiments of the present disclosure provide a schematic structural diagram of a communication device. As Figure 14 shown, the communication device 50 includes: a processor 502, a communication interface 503, and a bus 504. Optionally, the communication device 50 may further include a memory 501.

[0405] The processor 502 can be used to implement or execute various exemplary logical blocks, modules, and circuits described in connection with the disclosure of the present disclosure. The processor 502 can be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in connection with the disclosure of the present disclosure. The processor 502 can also be a combination for implementing computing functions, such as a combination including one or more microprocessors, a combination of DSP and microprocessors, etc.

[0406] The communication interface 503 is used to connect to other devices through a communication network. The communication network can be an Ethernet, a wireless access network, a wireless local area network (WLAN), etc.

[0407] The memory 501 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or can also be an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage medium or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0408] As a possible implementation, the memory 501 can exist independently of the processor 502. The memory 501 can be connected to the processor 502 through the bus 504 for storing instructions or program codes. When the processor 502 calls and executes the instructions or program codes stored in the memory 501, the communication method provided by the embodiments of the present disclosure can be implemented.

[0409] In another possible implementation, the memory 501 can also be integrated with the processor 502.

[0410] The bus 504 can be an extended industry standard architecture (EISA) bus, etc. The bus 504 can be divided into an address bus, a data bus, a control bus, etc. For the sake of simplicity in representation, Figure 14 only a thick line is used to represent it in the figure, but it does not mean that there is only one bus or one type of bus.

[0411] Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and simplicity of description, only the above division of each functional module is used for illustration. In actual applications, the above functions can be allocated to different functional modules according to needs, that is, the internal structure of the base station or terminal is divided into different functional modules to complete all or part of the functions described above.

[0412] Embodiments of the present disclosure also provide a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by computer instructions instructing relevant hardware. This program can be stored in the above computer-readable storage medium. When this program is executed, it can include the processes of the above method embodiments. The computer-readable storage medium can be the memory in any of the foregoing embodiments. The above computer-readable storage medium can also be an external storage device of the above first node or second node, such as a plug-in hard disk equipped on the above first node or second node, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. Further, the above computer-readable storage medium can also include both the internal storage unit of the above first node or second node and an external storage device. The above computer-readable storage medium is used to store the above computer program and other programs and data required by the above first node or second node. The above computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

[0413] Embodiments of the present disclosure also provide a computer program product. The computer product includes a computer program. When the computer program product runs on a computer, it causes the computer to execute any one of the communication methods provided in the above embodiments.

[0414] Although the present disclosure is described in conjunction with various embodiments herein, however, in the process of implementing the claimed present disclosure, those skilled in the art can understand and implement other changes of the disclosed embodiments by viewing the drawings, the disclosure content, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality of cases. A single processor or other unit can implement several functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0415] Although the present disclosure is described in conjunction with specific features and their embodiments, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the present disclosure. Accordingly, this specification and the drawings are only exemplary descriptions of the present disclosure defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of the present disclosure. Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent technologies, the present disclosure also intends to include these changes and modifications.

[0416] Above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present disclosure should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A communication method, characterized in that: Applied to the first node, the method includes: receiving a first indication message, where the first indication message is used to determine parameters of a physical downlink control channel (PDCCH); Based on the first indication message, the PDCCH is processed.

2. The method according to claim 1, characterized in that Include at least one of the following: According to different first indication messages, different PDCCH parameters are determined or different rules for processing the PDCCH are used; The first indication message includes first information and second information, the first PDCCH is processed according to the first information, and the second PDCCH is processed according to the second information; The first indication message is used to indicate or select parameters of the PDCCH.

3. The method according to claim 1, characterized in that The first indication message includes at least one of the following: First type of indication information, second type of indication information, and third type of indication information.

4. The method according to claim 3, characterized in that The first type of indication information is determined by a first parameter set, the second type of indication information is determined by a second parameter set, and the third type of indication information is determined by a third parameter set; wherein the parameter set includes at least one parameter.

5. The method according to claim 3, characterized in that The first type of indication information is associated with the second type of indication information and / or the third type of indication information; or, The second type of indication information and / or the third type of indication information are associated with the first type of indication information; or, The first type of indication information includes the second type of indication information and / or the third type of indication information; or, The second type of indication information and / or the third type of indication information includes the first type of indication information; or, The second type of indication information is associated with the third type of indication information.

6. The method according to claim 3, characterized in that The first type of indication information includes at least one of the following: at least one time node information, at least one time period information, at least one start time, at least one reference time, at least one offset, at least one cycle, at least one time parameter, and at least one subcarrier interval.

7. The method according to claim 3, characterized in that The first type of indication information is used to determine at least one time domain position for processing the PDCCH.

8. The method according to claim 6, characterized in that The time parameter is used to determine one or more time domain locations for processing the PDCCH; The time node information is used to determine the time domain position of the PDCCH monitoring opportunity; The time period information is used to determine the time of the PDCCH monitoring opportunity.

9. The method according to claim 8, characterized in that The time of the PDCCH monitoring opportunity includes at least one of the following: time length, the number of the PDCCH monitoring opportunities, and the time domain resources occupied by one of the PDCCH monitoring opportunities.

10. The method according to claim 3, characterized in that The first type of indication information includes at least one of the following: Downlink control information DCI format; DCI size; Number of blind inspections; Aggregation level; Number of candidate sets; Candidate set position; PDCCH monitoring opportunity interval / period; Number of symbols.

11. The method according to claim 10, characterized in that The candidate set position includes at least one of the following: a candidate set position of a specific aggregation level, at least one candidate set position of at least one aggregation level, and a candidate set starting position of a specific aggregation level.

12. The method according to claim 3, characterized in that The second type of indication information includes at least one of the following: Search space identifier; Control resource set identification; Frequency domain resource information; Partial bandwidth BWP information; interweaving information; frequency; carrier wave; Band information; The size of the control channel element (CCE); The number of CCEs at the aggregation level; CCE determination method.

13. The method according to claim 3, characterized in that The third type of indication information includes at least one of the following: Quasi-co-located QCL information; Scrambling information of a modulation and demodulation reference signal (DMRS); Transmission point information; Beam configuration information; Physical cell identifier PCI information; Physical area information; Virtual cell information; Community information.

14. The method according to claim 1, wherein activating or deactivating the first indication message, the parameters of the PDCCH, or the processing of the PDCCH according to activation signaling or deactivation signaling; or, Determine the first indication message, the parameters of the PDCCH, or the processing of the PDCCH according to downlink control information DCI signaling, media access control element MAC CE signaling, a wake-up signal or sequence; or, According to activation signaling or deactivation signaling, activate or deactivate the parameters of the PDCCH, or the processing of the PDCCH, wherein; the activation signaling or the deactivation signaling is determined by a first indication message.

15. The method according to claim 1, wherein The method further comprises: Under a specific condition, the PDCCH is processed according to the second indication message.

16. The method according to claim 15, characterized in that The processing of the PDCCH according to the second indication message under a specific condition includes at least one of the following: In a case where no downlink control information DCI is detected during processing of the PDCCH, processing the PDCCH according to the second indication message; In a case where a DCI is detected during processing of the PDCCH, processing the PDCCH according to an indication of the DCI and the second indication message; When activation signaling or deactivation signaling is received, processing the PDCCH according to the second indication message; When an activation condition or a deactivation condition is met, processing the PDCCH according to the second indication message; When detecting that the timer has expired, process the PDCCH according to the second indication message; If specific parameters are not met, processing the PDCCH according to the second indication message, wherein the specific parameters include statistical parameters, threshold values, predefined values, or parameter values configured by higher-layer parameters; Based on non-acknowledgement (NACK) feedback information or not sending feedback information of a physical downlink shared channel (PDSCH) scheduled by the PDCCH, processing the PDCCH according to the second indication message; In the case of sending specific information, the PDCCH is processed according to the second indication information, where the specific information includes parameters of the PDCCH, NACK feedback information, or result information.

17. The method according to claim 15, characterized in that The second indication message includes at least one of the following: Search space identifier; Search space type; subcarrier spacing; Control resource set identifier; Monitoring period; offset; duration; Monitoring symbols; Number of candidate sets; Aggregation level; Partial bandwidth BWP; Frequency band information; Carrier information; Transmission point information or TRP information; Port information; DMRS information.

18. The method according to claim 15, characterized in that The processing of the PDCCH according to the second indication message includes at least one of the following: Processing the PDCCH at a candidate set position other than the first candidate set position according to the second indication message; According to the second indication message, the PDCCH is processed at a candidate set position other than a candidate set position of a specific aggregation level.

19. The method according to claim 18, characterized in that The first candidate set position or the candidate set position of the specific aggregation level is determined according to the first indication message.

20. The method according to claim 15, wherein The second indication message is configured based on at least one of the following: radio resource control RRC signaling, system information SI, master information block MIB, high-layer signaling, MAC CE signaling, DCI, wake-up signal, sequence.

21. The method according to claim 1, wherein The first indication message includes information carried by the DMRS.

22. The method according to claim 21, characterized in that The information carried by the DMRS is used to indicate the configuration information of the PDCCH; The PDCCH configuration information is used for at least one of the following: Used to indicate the number of symbols of the PDCCH; Used to indicate the subcarrier spacing of the PDCCH; Used to indicate the type of the PDCCH, where the type of the PDCCH includes public or specific; Used to indicate at least one of the type, size, and format of the DCI carried by the PDCCH; Used to indicate the number of PDCCHs.

23. The method according to claim 21, characterized in that The information carried by the DMRS is used to indicate information of the PDSCH scheduled by the PDCCH; The information of the PDSCH scheduled by the PDCCH includes at least one of the following: Transport block size TBS; Transport block format or pattern; Modulation and coding scheme MCS; Modulation order; Time Domain Resource Allocation TDRA; Frequency domain resource allocation FDRA.

24. The method according to claim 1, wherein The information carried by the PDCCH includes first scheduling information of a shared channel and / or a PDCCH.

25. The method according to claim 24, characterized in that The first scheduling information includes at least one of the following: The first resource, the second resource, the configuration information of the PDCCH, and the scheduling information of the shared channel.

26. The method according to claim 25, characterized in that The first resource includes at least one of the following: First time domain resources; first symbol quantity; First image information; a first frequency domain resource; Alternatively, the second resource includes at least one of the following: Second time domain resources; Second symbol quantity; Second bitmap information; Second frequency domain resources.

27. The method according to claim 25, characterized in that The first resource and the second resource satisfy at least one of the following: The first resource and the second resource are continuous in the frequency domain; The first resource and the second resource are continuous in the time domain; In the frequency domain, the first resource includes the second resource; In the time domain, the first resource includes the second resource; The first resource and the second resource do not overlap; The first resource and the second resource use the same mapping method; The second resource is determined according to the first resource; The first resource is used to determine the time-frequency domain resources of the PDCCH, and the second resource is used to determine the time-frequency domain resources of the shared channel; The first resource is used to determine the time-frequency domain resources of the shared channel, and the second resource is used to determine the time-frequency domain resources of the PDCCH; The first resource is used to determine the time-frequency domain resources of the shared channel and the PDCCH, and the second resource is used to determine the time-frequency domain resources of the PDCCH or the time-frequency domain resources of the shared channel.

28. The method according to claim 25, characterized in that The scheduling information of the shared channel includes at least one of the following: FDRA; TDRA; Mapping of virtual resource blocks to physical resource blocks; New data indicator NDI; Redundancy version RV; Hybrid Automatic Repeat Request HARQ process number; Downlink allocation index; Scheduling the transmission power control TPC command of the physical uplink control channel PUCCH; PUCCH resource indicator; PDSCH to HARQ feedback timer; Extended cyclic prefix in channel access control; Subcarrier spacing.

29. The method according to claim 25, characterized in that The PDCCH configuration information includes at least one of the following: Search space identifier; Search space type; Control resource set identifier; Monitoring periodicity and offset of time slots; duration; Monitoring symbols within a time slot; Number of candidate sets; Aggregation level; DCI format; DCI bearer size; Aggregation level; Candidate set position; interweaving information; Mapping type information; DMRS sequence information.

30. The method according to claim 1, wherein The first indication message includes scheduling information of a shared channel, or the information carried by the PDCCH includes scheduling information of a physical shared channel.

31. The method according to claim 30, characterized in that Include at least one of the following: The shared channel is used to carry one or more DCIs, or the shared channel is used to carry one or more PDCCHs; wherein the shared channel includes a physical downlink shared channel, and the physical downlink shared channel includes at least two types, a first type physical shared channel and a second type physical shared channel.

32. The method according to claim 31, wherein The DCI is used to indicate scheduling information of the first type of physical shared channel.

33. The method according to claim 1, wherein The PDCCH is a first PDCCH, and information carried by the first PDCCH includes scheduling information of a second PDCCH.

34. The method according to claim 33, wherein The first PDCCH and the second PDCCH satisfy at least one of the following relationships: The number of symbols of the second PDCCH is greater than or equal to the number of symbols of the first PDCCH; The time domain position of the first PDCCH is before the time domain position of the second PDCCH; The first PDCCH is mapped according to CCE, and the second PDCCH is mapped according to physical resource blocks PRB; The first PDCCH is mapped according to the first CCE, and the second PDCCH is mapped according to the second CCE; The first PDCCH corresponds to a first reference signal, and the second PDCCH corresponds to a second reference signal.

35. The method according to claim 33, wherein The second PDCCH is used to schedule a shared channel, wherein the second PDCCH and the shared channel have the same mapping mode, time domain resource range, frequency domain resource range, antenna port, or reference signal; or, the second PDCCH precedes the shared channel.

36. The method according to claim 1, wherein The first indication message is based on at least one of the following indications: DCI, MAC CE signaling, RRC signaling, sequence, wake-up signal.

37. A communication method, characterized in that: Applied to the second node, the method includes: Sending a first indication message, where the first indication message is used to determine parameters of the PDCCH; Based on the first indication message, the PDCCH is processed.

38. A communication device, characterized in that: include: memory and processor; Memory and processor coupling; The memory is used to store instructions executable by the processor; When the processor executes the instructions, the method according to any one of claims 1 to 37 is performed.

39. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer is caused to perform the method according to any one of claims 1 to 37.

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