Communication methods and apparatuses, and storage medium

Abstract

Provided in the embodiments of the present disclosure are communication methods and apparatuses, and a storage medium. A communication method comprises: receiving a first indication message, wherein the first indication message is used for determining a parameter of a physical downlink control channel (PDCCH); and on the basis of the first indication message, processing the PDCCH.

Description

Communication method, device and storage medium

[0001] This application claims priority to Chinese patent application No. 202410154774.3, filed on February 2, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of communication technologies, and in particular to a communication method and device, and a storage medium. Background Art

[0003] Before a network device and a terminal transmit data, 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).

[0004] Summary of the Invention

[0005] In a first aspect, a communication method is provided, which is applied to a first node. The communication method includes: receiving a first indication message, where the first indication message is used to determine a parameter of a PDCCH; and processing the PDCCH based on the first indication message.

[0006] In a second aspect, a communication method is provided, which is applied to a second node. The communication method includes: sending a first indication message, where the first indication message is used to determine a parameter of a PDCCH; and processing the PDCCH based on the first indication message.

[0007] According to a third aspect, a communication device is provided, which is applied to a first node. The communication device includes: a receiving unit, which is used to receive a first indication message, where the first indication message is used to determine the parameters of a PDCCH; and a processing unit, which is used to process the PDCCH based on the first indication message.

[0008] In a fourth aspect, a communication device is provided, which is applied to a second node. The communication device includes: a sending unit, which is used to send a first indication message, where the first indication message is used to determine the parameters of the PDCCH; and a processing unit, which is used to process the PDCCH based on the first indication message.

[0009] In a fifth aspect, a communication device is provided, comprising: a processor and a memory. The memory is coupled to the processor; the memory stores instructions executable by the processor; and the processor is configured to, when executing the instructions, cause the communication device to implement the method provided in either the first aspect or the second aspect.

[0010] 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.

[0011] In a seventh aspect, a computer program product comprising computer instructions is provided, which, when executed on a computer, causes the computer to execute the method provided in either the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the technical solution of the present disclosure 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 disclosure and do not constitute a limitation to the technical solution of the present disclosure.

[0013] FIG1 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure.

[0014] FIG2 is a flow chart of a communication method according to an embodiment of the present disclosure.

[0015] FIG3 is a schematic diagram of a PDCCH monitoring opportunity according to an embodiment of the present disclosure.

[0016] FIG4 is a schematic diagram of another PDCCH monitoring opportunity according to an embodiment of the present disclosure.

[0017] FIG5 is a schematic diagram of a first type of indication information according to an embodiment of the present disclosure.

[0018] FIG6 is a schematic diagram of another first type of indication information according to an embodiment of the present disclosure.

[0019] FIG7 is a schematic diagram of another PDCCH monitoring opportunity according to an embodiment of the present disclosure.

[0020] FIG8 is a schematic diagram of a PDCCH structure according to an embodiment of the present disclosure.

[0021] FIG9 is a schematic diagram showing information carried by a DMRS and used to indicate information of a PDSCH scheduled by a PDCCH according to an embodiment of the present disclosure.

[0022] FIG10 is a schematic diagram of chained scheduling of PDCCH and PDSCH according to an embodiment of the present disclosure.

[0023] FIG11 is a flow chart of another communication method according to an embodiment of the present disclosure.

[0024] FIG12 is a schematic diagram showing the composition of a communication device according to an embodiment of the present disclosure.

[0025] FIG13 is a schematic diagram showing the composition of another communication device according to an embodiment of the present disclosure.

[0026] FIG14 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present disclosure.

[0028] Unless the context requires otherwise, 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 interpreted as open and inclusive, that is, "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" are intended to indicate that the particular features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0029] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, features described with "first," "second," etc., may explicitly or implicitly include one or more of such features. Throughout this disclosure, unless otherwise specified, "plurality" means two or more.

[0030] In the embodiments of the present disclosure, words such as "exemplary" or "for example" are used to describe examples, illustrations, or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present disclosure should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete way.

[0031] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0032] With the continuous development of communication technology, from the second generation of mobile communication technology to the fifth generation of mobile communication technology, the performance and efficiency of communication systems have been significantly improved. However, with the continuous growth of people's demand for communication, related communication technologies have become unable to meet the increasingly complex communication needs. Especially in urban environments, high-rise buildings, dense crowds, and diverse business needs pose huge challenges to communication. Therefore, to meet future communication needs, communication methods for the sixth generation of mobile communication technology (6G) are urgently needed to be proposed and implemented.

[0033] Current communication methods lack high accuracy in monitoring the PDCCH, resulting in a high number of blind detections and high power consumption. Improving the accuracy of PDCCH monitoring in 6G is an urgent issue to be addressed.

[0034] Based on this, the embodiments of the present disclosure provide a communication method, device and storage medium, in which the first node processes the PDCCH based on the parameters of the monitored PDCCH indicated by the first indication message, thereby improving the accuracy of monitoring the PDCCH in 6G, thereby reducing the number of blind detections of the first node and helping to reduce the power consumption of the first node.

[0035] The following describes the solutions of the embodiments of the present disclosure in conjunction with the accompanying drawings.

[0036] The technical solutions provided by the embodiments of the present disclosure can be applied to various mobile communication networks, for example, new radio (NR) mobile communication networks using fifth-generation mobile communication technology (5G), future mobile communication networks (6G wireless communication systems), or multiple communication convergence systems, etc., but the embodiments of the present disclosure are not limited to this.

[0037] In some embodiments, the technical solution provided by the embodiments of the present disclosure can be applied to 6G-oriented PDCCH processing, where PDCCH processing includes monitoring, detection, reception, or blind detection.

[0038] Figure 1 is a schematic diagram of the structure of a communication system according to an embodiment of the present disclosure. As shown in Figure 1, the communication system includes but is not limited to a first node 110 and a second node 120. The first node 110 and the second node 120 can transmit and receive wireless signals and perform related interactions.

[0039] In a wireless communication scenario, a first node 110 and a second node 120 communicate via a wireless channel. For example, the first node 110 is a terminal and the second node 120 is a base station, and the terminal and the base station communicate via a wireless channel. In another example, the first node 110 is a terminal and the second node 120 is a wireless router, and the wireless router and the terminal communicate via a wireless channel. In another example, the first node 110 is a first base station and the second node 120 is a second base station, and the first base station and the second base station communicate via a wireless channel. In another example, the first node 110 is a first terminal and the second node 120 is a second terminal, and the first terminal and the second terminal communicate via a wireless channel. In another example, the first node 110 is a repeater and the second node 120 is a base station, and the base station and the repeater communicate via a wireless channel. In another example, the first node 110 is a terminal and the second node 120 is a repeater, and the repeater and the terminal communicate via a wireless channel. For another example, the first node 110 is a first relay, the second node 120 is a second relay, and the first relay and the second relay communicate via a wireless channel. For another example, the first node 110 is a base station, the second node 120 is a satellite, and the satellite and the base station communicate via a wireless channel. For another example, the first node 110 is a satellite, the second node 120 is a base station, and the base station and the satellite communicate via a wireless channel. For another example, the first node 110 is a terminal, the second node 120 is a satellite, and the satellite and the terminal communicate via a wireless channel. For another example, the first node 110 is a satellite, the second node 120 is a terminal, and the terminal and the satellite communicate via a wireless channel. For another example, the first node 110 is a ground device, the second node 120 is an aircraft, and the aircraft and the ground device communicate via a wireless channel. For another example, the first node 110 is a first aircraft, the second node 120 is a second aircraft, and the first aircraft and the second aircraft communicate via a wireless channel.

[0040] In the present disclosure, the “first” node, “second” node, “first” manner, “second” manner, “first” method, “second” method, “first” matrix, “second” matrix, “first” part, and “second” part are used only for descriptive distinctions unless otherwise specified and do not represent a sequence of precedence or chronological order.

[0041] In the embodiment of the present disclosure, the first node and the second node may also have other names. For example, the first node may also be called a first communication node, and the second node may also be called a second communication node, etc. The embodiment of the present disclosure does not limit this.

[0042] In some embodiments, the base station may be any of an evolution nodeB (eNB), a next generation nodeB (gNB), a transmission and reception point (TRP), a transmission point (TP), a relay node, a reconfigurable intelligent surface (RIS), and some other access node. Depending on the size of the service coverage area provided, the base station can be further divided into a macro base station for providing macro cells, a micro base station for providing pico cells, and a femto base station for providing femto cells. With the continuous evolution of wireless communication technology, future base stations may also adopt other names.

[0043] In some embodiments, the terminal may be a device with wireless transceiver capabilities, such as a mobile phone, tablet computer, wearable device, vehicle-mounted device, augmented reality (AR) / virtual reality (VR) device, laptop computer, ultra-mobile personal computer (UMPC), netbook, personal digital assistant (PDA), Internet of Things terminal, etc. The embodiments of the present disclosure do not limit the type of terminal.

[0044] It should be understood that FIG1 is an exemplary structural diagram, and the number of devices included in the communication system shown in FIG1 is not limited. For example, the number of first nodes and second nodes is not limited. Furthermore, in addition to the devices shown in FIG1 , the communication system shown in FIG1 may also include other devices, which is not limited.

[0045] Next, as shown in Figure 2, an embodiment of the present disclosure provides a communication method, which is applied to a first node, which may be the first node 110 shown in Figure 1. The communication method includes the following S101 and S102.

[0046] In S101, a first indication message is received.

[0047] In S102, the PDCCH is processed based on the first indication message.

[0048] The first indication message is used to determine the parameters of the PDCCH.

[0049] In some embodiments, to improve the performance of PDCCH detection by the first node or reduce the number of blind PDCCH detections, the second node, after configuring the first indication message, sends the first indication message to the first node. Accordingly, the first node receives the first indication message sent by the second node. For ease of description, the following embodiments illustrate a communication method provided by embodiments of the present disclosure using the first node as a terminal and the second node as a base station as an example.

[0050] In some embodiments, different first indication messages may determine different PDCCH parameters or different PDCCH processing rules. In other words, different first indication messages may correspond to different PDCCH parameters or different PDCCH processing rules.

[0051] In some embodiments, the first indication message is used to determine PDCCH parameters, i.e., the first indication message includes PDCCH-related parameters; or, the first indication message is equivalent to the PDCCH parameters, i.e., the first indication message indicates the PDCCH parameters. Exemplarily, the first indication message includes first-category indication information, second-category indication information, third-category indication information, and fourth-category indication information. The above four categories of indication information are all parameters related to processing the PDCCH and can be referred to as PDCCH parameters.

[0052] 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 spacings, different offsets, different carriers, different cells, different paths or routing nodes, different transmission points, different beams, different physical areas, different virtual cells, different physical cell identities (PCIs), different bandwidths (BWPs), different bands, and 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 processing of the PDCCH based on the first information, such as different first information, different time-frequency resources, different cells, different carriers, different subcarrier spacings, etc.

[0053] 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, and a first frequency domain bandwidth. The first node may process the first PDCCH based on the 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, and a second frequency domain bandwidth. The second PDCCH is processed based on the second information. In other words, different PDCCHs can be processed based on different information.

[0054] In some embodiments, the first indication information is used to indicate or select parameters of the PDCCH.

[0055] It should be noted that, for the sake of convenience of description, in the embodiments of the present disclosure, time nodes, start times, time periods, cycles, subcarrier spacing, offsets, carriers, cells, paths or routing nodes, transmission points, beams, physical areas, virtual cells, PCIs, BWPs, bands, and frequency domain bandwidth information are collectively referred to as specific information.

[0056] In some embodiments, determining the PDCCH parameters based on the first indication message also includes at least one of the following: configuring at least one of a specific DCI format, DCI size, aggregation level, number of candidate sets, subcarrier spacing, frequency domain resources, and candidate set position within a time period; configuring at least one of a specific DCI format, DCI size, aggregation level, number of candidate sets, subcarrier spacing, frequency domain resources, and candidate set position at different time nodes; configuring at least one of a specific DCI format, DCI size, aggregation level, number of candidate sets, frequency domain resources, and candidate set position at different PDCCH monitoring times; configuring at least one of a specific DCI format, DCI size, aggregation level, number of candidate sets, frequency domain resources, and candidate set position in different search spaces.

[0057] In some embodiments, a PDCCH parameter includes at least one of the following: a value range, a list, or a candidate value. The first indication message is used to determine at least one value of the PDCCH parameter. Exemplarily, at least one of the value range, the list, or the candidate value is determined via the first indication message. Exemplarily, the first indication message indicates a value range, a list, a candidate value, or a single value of a PDCCH-related parameter. Exemplarily, the first indication message indicates or configures a PDCCH parameter.

[0058] 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. 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. For each parameter set in the first parameter set, the second parameter set, and the third parameter set, each parameter set includes at least one parameter. The first type of indication information and the second type of indication information can also be called 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.

[0059] In some embodiments, the first category of indication information is associated with the second category of indication information and / or the third category of indication information; or, the second category of indication information and / or the third category of indication information is associated with the first category of indication information; or, the first category of indication information includes the second category of indication information and / or the third category of indication information; or, the second category of indication information and / or the third category of indication information includes the first category of indication information; or the second category of indication information and the third category of indication information are associated.

[0060] Exemplarily, the search space and PDCCH parameters are associated with TRP, associated with a time node, associated with port information, associated with a cell, associated with a transmission point, or associated with a beam.

[0061] 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 is configured based on a time node, or is associated with time information; or the PDCCH parameter configuration 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 that are time-based. For example, the PDCCH parameters determined by the second type of indication information or the third type of indication information take effect at different time nodes.

[0062] 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 a specific message in the first indication message.

[0063] 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, and at least one subcarrier spacing. The above-mentioned time parameters can be used to determine one or more time domain locations for processing PDCCH; the time node information is used to determine the time domain location of the PDCCH monitoring opportunity; 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, used to determine the time node, time domain location, or time length.

[0064] The following is an exemplary description of how the first node processes the PDCCH based on the first indication message.

[0065] As an example, the first node determines, at a first time node and a second time node, a first indication message of a first PDCCH and a second PDCCH, or determines parameters of the first PDCCH and parameters of the second PDCCH, at a first time node and a second time node, or at a first time period and a second time period. At the first time node, the first PDCCH is processed according to the parameters of the first PDCCH, and at the second time node, the second PDCCH is processed according to the parameters of the second PDCCH.

[0066] As another example, the first node determines parameters of a first PDCCH based on a first subcarrier spacing (SCS) and / or a first frequency band. Determine parameters of a second PDCCH based on a second SCS and / or a second frequency band. Detect the first PDCCH based on the first SCS and / or on the first frequency band, and detect the second PDCCH based on the second SCS and / or on the second frequency band.

[0067] As another example, a first node determines parameters for a first PDCCH based on a first transmission point and determines parameters for a second PDCCH based on a second transmission point. Transmission points include TRPs, cells, beams, neighboring cells, relays, base stations, and the like. Information about the transmission points 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.

[0068] 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.

[0069] In some embodiments, the first type of indication information is used to determine at least one time domain location for processing the PDCCH.

[0070] As an example, take the case where the first type of indication information includes two time node information. For example, as shown in FIG3 , a schematic diagram of a PDCCH monitoring opportunity according to an embodiment of the present disclosure is shown. Referring to FIG3 , the first type of indication information indicates the time domain position for monitoring the PDCCH at the first PDCCH monitoring opportunity (i.e., time node 1), the time domain position for monitoring the PDCCH at the second PDCCH monitoring opportunity (i.e., time node 2), and the period between time node 1 and time node 2.

[0071] As another example, take the case where the first type of indication information includes two time period information. For example, as shown in FIG4 , it is a schematic diagram of another PDCCH monitoring opportunity according to an embodiment of the present disclosure. Referring to FIG4 , the first type of indication information indicates the start time and time length of monitoring PDCCH at the first PDCCH monitoring opportunity (i.e., time node 1), the start time and time length of monitoring PDCCH at the second PDCCH monitoring opportunity (i.e., time node 2), and the period between time node 1 and time node 2.

[0072] 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 locations; interval / period of PDCCH monitoring opportunities; and number of symbols. The blind detection parameter may be a maximum number of blind detections. A candidate set refers to a possible location for PDCCH detection.

[0073] In some embodiments, the DCI format includes an uplink DCI format, 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 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 and L is an integer greater than or equal to 0. The number of symbols includes at least one of {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}.

[0074] In some embodiments, the determination of the candidate set positions is related to the aggregation level.

[0075] In some embodiments, determination of the candidate set positions is related to the aggregation level and the number of resources or the number of control channel elements (CCEs). For example, assuming the total number of CCEs is X, and an integer n based on X / L is rounded down, the candidate set positions corresponding to the aggregation level L include 0 to n-1, where X is an integer greater than or equal to 1 and n is an integer greater than or equal to 1.

[0076] In some embodiments, assuming there are n candidate set positions, the required number of bits is calculated based on log2(n), such as floor(log2(n)). Alternatively, the number of bits is n; or the range of the number of bits satisfies a value greater than or equal to floor(log2(n)) and less than or equal to n. Based on the first indication message of the number of bits, PDCCH parameters can be determined.

[0077] 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, the candidate set identifier is candidate2 (candidate set 2). As shown in Figure 5, it is a schematic diagram of the first type of indication information according to an embodiment of the present disclosure. Referring to Figure 5, based on the first type of indication information, the first node only needs to detect DCI at the candidate2 position. In the case where the first indication message or the first type of indication information includes two time nodes, as shown in Figure 6, it is another schematic diagram of the first type of indication information according to an embodiment of the present disclosure. Referring to Figure 6, the first node can detect DCI at the candidate2 (candidate set 2) position at time node 1, and detect DCI at the candidate2 (candidate set 2) position at time node 2.

[0078] It should be noted that the aggregation level is the number of rectangular blocks in FIG. 5 or FIG. 6 .

[0079] In some embodiments, the first node may determine a detection position of the PDCCH based on the aggregation level and the candidate set position.

[0080] In some embodiments, the first type of indication information may further include bitmap information, where the bitmap information is used to indicate the position of the candidate set.

[0081] In some embodiments, the first type of indication information may also indicate a starting candidate set position. 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 number of candidate sets and perform candidate set detection.

[0082] In some embodiments, when the first type of indication information includes the number of candidate sets, the first node may determine the candidate set position based on the number of candidate sets and a preset rule. For example, if the number of candidate sets is X, the number of candidate sets may be indicated based on log2X bits, such as ceil(log2(X) bits. For another example, if the number of candidate sets is X, the number of candidate sets may be indicated based on X bits of bitmap information.

[0083] In some embodiments, the first node may determine the parameters of the PDCCH based on TRP information, search space identifier, frequency, control resource set identifier, beam, and candidate set position.

[0084] In some embodiments, the first type of indication information may further include a search space identifier, which is an identifier for determining a PDCCH monitoring opportunity.

[0085] In some embodiments, the first type of indication information may also include duration information of the interval between PDCCH monitoring opportunities. For example, FIG7 is a schematic diagram of another PDCCH monitoring opportunity according to an embodiment of the present disclosure. Referring to FIG7 , when the PDCCH monitoring opportunity at time node 1 is an interval, the first type of indication information also includes interval duration information (i.e., the Gap interval in FIG7 ).

[0086] In some embodiments, the first type of indication information may further include an identifier of the first node. The identifier of the first node is used to determine a candidate set position. The identifier of the first node may be based on a modulo operation, such as UE_ID mod candidate number or candidate number mod UE_ID. Based on the identifier of the first node, the candidate set position or positions at which to monitor the PDCCH may be determined.

[0087] In some embodiments, 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 starting position of a candidate set of a specific aggregation level.

[0088] In some embodiments, the number of candidate sets includes at least one of the following: the number of candidate sets at a specific aggregation level, and the number of consecutive candidate sets.

[0089] 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 (frequency domain resources); BWP information; interleaving information; frequency point information; carrier information; band information; size of control channel element (CCE); number of CCEs of aggregation level; and method for determining CCE.

[0090] Exemplarily, interleaving information is used to determine whether to interleave, including frequency domain interleaving or time domain interleaving, and the granularity of interleaving, etc. The control resource set identifier is used to determine the frequency domain position of the PDCCH monitoring opportunity. The search space identifier is used to determine the time domain position of the PDCCH monitoring opportunity. 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 determines 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 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 method for determining CCE includes determining that one CCE occupies x1 REGs, determining x2 frequency domain subcarriers, and determining that there are x3 data REs or x4 demodulation reference signal (DMRS) resource elements (REs). The method for determining CCE also includes determining the type of CCE, and different CCE types have different RE allocations. CCE is the basic unit of a control channel and may also have other names.

[0091] In some embodiments, the third type of indication information includes at least one of the following: quasi co-location (QCL) information; scrambling information of demodulation reference signal (DMRS); transmission point information; beam configuration information; PCI information; physical area information; virtual cell information; and cell information.

[0092] Exemplarily, the transmission point information includes transmission and reception point (TRP) information, cell, beam, neighboring 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.

[0093] Exemplarily, the physical area information is based on location, or based on location information of a certain area, or based on location information of a certain space, or based on location information of a line.

[0094] Exemplarily, the virtual cell information includes: virtual cells defined in a cell-free scenario, virtual cells defined in a base station configuration, virtual cells defined in a core network configuration, virtual cells defined based on beam directions, virtual cells defined based on a sector area of ​​a site, etc.

[0095] In some embodiments, the first indication message further includes fourth type indication information. The fourth type indication information is used to activate or deactivate at least one of the following: the first type indication information, the second type indication information, and the third type indication information.

[0096] In some embodiments, the first indication message is also a type of information.

[0097] In some embodiments, the first indication message, PDCCH parameters, or PDCCH processing are activated or deactivated according to activation or deactivation signaling; the first indication message, PDCCH parameters, or PDCCH processing are determined according to DCI signaling, media access control control element (MAC CE) signaling, a wake-up signal or sequence. Alternatively, the PDCCH parameters or PDCCH processing are activated or deactivated according to activation or deactivation signaling. The activation signaling or deactivation signaling is determined by the first indication message.

[0098] In some embodiments, the activation signaling or deactivation signaling includes RRC signaling, SI, Master Information Block (MIB), higher layer signaling, MAC CE signaling, DCI, wake-up signal, sequence.

[0099] Exemplarily, activating or deactivating the first indication message according to activation signaling or deactivation signaling includes: activating or deactivating PDCCH monitoring based on specific information and PDCCH monitoring based on first information according to activation signaling or deactivation signaling. For example, after receiving the activation signaling, PDCCH monitoring is performed based on time, cell, trajectory or routing node, subcarrier spacing, frequency, BWP or band. Determining PDCCH parameters includes determining second-category indication information, third-category indication information, etc.

[0100] Exemplarily, according to DCI signaling, MAC CE signaling, a wake-up signal or a sequence, a first indication message, PDCCH parameters, or PDCCH processing is determined: including indicating or activating or deactivating a set of PDCCH parameters according to DCI signaling, MAC CE signaling, a wake-up signal or a sequence, indicating or activating or deactivating a set of PDCCH parameters in a first indication message, and determining or activating or deactivating PDCCH processing.

[0101] Exemplarily, PDCCH parameters are activated or deactivated according to activation signaling or deactivation signaling. PDCCH parameters include time parameters, resource parameters, and other parameters, and may also include parameters determined according to the first indication message. After the PDCCH parameters are activated, PDCCH processing is performed according to the activated PDCCH parameters.

[0102] Exemplarily, according to activation signaling or deactivation signaling, the processing of activating or deactivating PDCCH includes activating or deactivating PDCCH monitoring based on specific information, for example, monitoring of PDCCH based on time node, based on transmission point, based on routing node, based on cell, or based on subcarrier spacing.

[0103] Exemplarily, according to the activation signaling or deactivation signaling, the parameters of the PDCCH or the processing of the PDCCH are activated or deactivated. The activation signaling or deactivation signaling is determined by the first indication message, including whether the processing of the PDCCH is PDCCH monitoring based on specific information, PDCCH monitoring to reduce blind detection, or PDCCH monitoring under a specific mode or configuration.

[0104] In some embodiments, the parameters of PDCCH include 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 PDCCH monitoring opportunities; number of symbols; search space identifier; control resource set identifier; frequency domain resource information; BWP information; interleaving information; frequency point; CCE size; number of CCEs of aggregation level; method of determining CCE; QCL information; DMRS scrambling information; transmission point information; beam configuration information; PCI information; physical area information; virtual cell information; cell information; search space identifier; search space type; subcarrier spacing; control resource set identifier; monitoring period; offset; duration; monitoring symbols; number of candidate sets; aggregation level; frequency band information; carrier / band information; transmission point information or TRP information; port information; DMRS information.

[0105] The above-mentioned PDCCH parameters can be configured through the first indication message, and can also be determined through the first indication message.

[0106] In some embodiments, the BWP information includes a subband index and a BWP index. The BWP information is used to determine the range of the frequency domain where the PDCCH is located. The interleaving information includes determining whether to interleave, the interleaving granularity, and parameter information related to interleaving. The frequency point information indicates at least one frequency point location. The carrier indicates at least one carrier, and the carrier information includes index information and auxiliary cell information. The band information includes a frequency band index. The size of the CCE indicates the number of CCEs. The method of determining the CCE includes forming a CCR based on the number of resource units of the first CCE and the number of resource units of the second CCE, or including whether the CCE is continuous or discrete. The transmission point information includes the TRP number or index, PCI, routing node information, or track node information, etc. The port information includes the antenna port number, number, beam direction, beam number, or number of antennas. The DMRS information includes the DMRS sequence, the information carried by the DMRS, the DMRS pattern, and the time-frequency resource position of the DMRS.

[0107] In some communication systems, the PDCCH is mainly used to indicate control information / signaling, or to schedule data channels or shared channels.

[0108] In some embodiments, after receiving the first indication message, the first node may process the PDCCH based on the PDCCH parameters determined in the first indication message. Processing the PDCCH by the first node includes at least one of the following: detecting the PDCCH, monitoring the PDCCH, blindly detecting the PDCCH, receiving the PDCCH, etc., which is not limited in the embodiments of the present disclosure.

[0109] In some embodiments, the frequency domain location for receiving the first indication message is the same as the frequency domain location for processing the PDCCH, or the frequency domain location for receiving the first indication message is different from the frequency domain location for processing the PDCCH. It should be understood that the frequency domain location for receiving the first indication message is different from the frequency domain location for processing the PDCCH, which can avoid resource contention and meet different coverage performance requirements.

[0110] In the embodiment of the present disclosure, the first node can process the PDCCH based on the PDCCH parameters determined by the first indication message, thereby 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.

[0111] In some embodiments, when the first node receives a 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. The second indication message may be sent by the second node to the first node, or may be preconfigured, or the first indication message may include the second indication message, and the embodiments of the present disclosure are not limited to this. When the second indication message is sent by the second node to the first node, the second indication message may be sent before the second node sends the first indication message, or may be sent after the second node sends the first indication message, or may be sent together with the first indication message.

[0112] In some embodiments, the second indication message may also be default configuration information or predefined configuration information.

[0113] In some embodiments, under specific conditions, processing the PDCCH according to the second indication message includes at least one of the following: processing the PDCCH according to the second indication message when no downlink control information (DCI) is detected during processing of the PDCCH; processing the PDCCH according to the indication of the DCI and the second indication message when DCI is detected during processing of the PDCCH; processing the PDCCH according to the second indication message when activation signaling or deactivation signaling is received; processing the PDCCH according to the second indication message when activation or deactivation conditions are met; processing the PDCCH according to the second indication message when a timer expiration is detected; processing the PDCCH according to the second indication message when specific parameters are not met. The specific parameters include statistical parameters, threshold values, predefined values, or parameter values ​​configured by higher-layer parameters.

[0114] Based on negative acknowledgment (NACK) feedback information or when feedback information of a physical downlink shared channel (PDSCH) scheduled by the PDCCH is not sent, the PDCCH is processed according to the second indication message.

[0115] In the case of sending specific information, the PDCCH is processed according to the second indication message. The specific information includes PDCCH parameters, NACK feedback information, or result information.

[0116] In some embodiments, the specific information is sent based on at least one of the following: a physical uplink control channel (PUCCH), a channel state information report (CSI report), an uplink signal, and an uplink channel.

[0117] Exemplarily, when processing PDCCH and no DCI / PDCCH is detected, PDCCH is processed according to the second indication message, including: when no DCI is detected at at least one time node, PDCCH is detected according to RRC configured PDCCH parameters, default PDCCH parameters, the first indication message, predefined PDCCH parameters, such as search space, period, offset, aggregation level, number of candidate sets, frequency domain position, etc.

[0118] Exemplarily, when no DCI / PDCCH is detected during processing of the PDCCH, processing the PDCCH according to the second indication message includes: when no DCI / PDCCH is detected at at least one transmission point, cell, carrier, physical area, or routing node, detecting the PDCCH according to RRC-configured PDCCH parameters, default PDCCH parameters, the first indication message, and predefined PDCCH parameters. It should be understood that, typically, the PDCCH carries DCI.

[0119] Exemplarily, in a case where DCI is detected while processing a PDCCH, processing the PDCCH according to an indication of the DCI and a second indication message includes: determining detection of the PDCCH according to the indication of the DCI and information of an RRC configuration, a default configuration, or the first indication message. The DCI includes activation signaling or deactivation signaling, and the activation signaling is used to activate at least one set of PDCCH parameters and perform detection based on the parameters of the PDCCH. The deactivation signaling is used to deactivate the current PDCCH processing and fall back to processing the PDCCH based on default, predefined PDCCH parameters.

[0120] Exemplarily, when DCI is detected when processing PDCCH, processing PDCCH according to the indication of DCI and the second indication message includes: selecting or determining at least one set or one PDCCH parameter in the second indication message according to the indication of DCI, and processing PDCCH according to the parameters of the PDCCH.

[0121] In some embodiments, the first indication message includes the second indication message.

[0122] In some embodiments, the second indication message and the first indication message are different values ​​of the same parameter.

[0123] In some embodiments, the second indication message and the first indication message are respectively configured by separate parameters.

[0124] As an example, when an activation condition or a deactivation condition is met, the PDCCH is processed according to the second indication message. The activation or deactivation conditions include conditions based on a timer, ACK / NACK feedback, parameter satisfaction, threshold parameter satisfaction, specific parameter configuration, signal strength satisfaction, and the like.

[0125] As an example, based on NACK feedback information or not sending feedback information of the physical downlink shared channel (PDSCH) scheduled by the PDCCH, processing the PDCCH according to the second indication message includes: when the decoding of the PDSCH scheduled by the PDCCH fails, NACK is fed back. At this time, the first node has learned based on the NACK that it is not suitable to continue processing the PDCCH according to the first indication message, so based on the NACK feedback information, the first node processes the PDCCH according to the second indication message. Alternatively, when the PDCCH decoding fails, the first node is in a discontinuous transmission (DTX) state. At this time, the second node has not received the 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, so it is necessary to instruct the first node to process the PDCCH according to the second indication message. Alternatively, the time for the first node to process the PDCCH according to the first indication message exceeds the predefined time, or the timer overflows, and the PDCCH is processed according to the second indication message.

[0126] As an example, based on the NACK feedback information, the PDCCH is processed according to the second indication message, including: the number of NACK feedbacks exceeds the threshold value and there is NACK feedback; or the ACK feedback ratio 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 according to the second indication message by itself.

[0127] As an example, when sending specific information, the PDCCH is processed according to the second indication message, including: the result information refers to the evaluation result based on AI or based on a certain mode or based on a set of PDCCH parameter scheduling, including training results, supervision results, scheduling success results or failure results, NACK / ACK feedback results, these results reflect the current PDCCH working performance.

[0128] In some embodiments, the second indication message includes at least one of the following: a search space identifier; a search space type; a subcarrier spacing; a control resource set identifier; a monitoring period; an offset; a duration; monitoring symbols; a number of candidate sets; an aggregation level; a bandwidth fraction (BWP); frequency band information; carrier information; transmission point information (TRP); port information; and DMRS information. The monitoring symbols are used to determine the time domain symbols on which the PDCCH is monitored.

[0129] 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 a target candidate set.

[0130] In some embodiments, the second indication message includes a default candidate set identifier or location.

[0131] As an example, processing PDCCH according to the second indication message includes at least one of the following: processing PDCCH at a candidate set position other than the first candidate set position according to the second indication message; processing PDCCH at a candidate set position other than the candidate set position of a specific aggregation level according to the second indication message.

[0132] The first candidate set position or the candidate set position of a specific aggregation level is determined according to the first indication message or the first type of indication information. In other words, the first indication message or the first type of indication information indicates the first candidate set position or the candidate set position of a specific aggregation level.

[0133] In some embodiments, the first indication message is indicated based on at least one of the following: DCI, media access control element (MAC CE) signaling, radio resource control (RRC) signaling, sequence, and wake-up signal.

[0134] 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.

[0135] It should be noted that in 5G, the DMRS in the synchronization signal block (SSB) is used to indicate the SSB index information, while in the case of 6G, the DMRS or other reference signals on the PDCCH may carry some PDCCH-related information. Based on this, in some embodiments, the first indication message includes 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 to indicate at least one of the following: the number of symbols of the PDCCH; the subcarrier spacing of the PDCCH; the type of the PDCCH; at least one of the type, size, and format of the DCI carried by the PDCCH; the number of PDCCHs. The contents indicated by the above-mentioned configuration information of the PDCCH are described below.

[0136] The configuration information of PDCCH is used to indicate the number of PDCCH symbols. For example, taking the configuration information of PDCCH being used to indicate the number of PDCCH symbols as an example, the number of PDCCH symbols includes 1, 2, and 3. For example, the number of PDCCH symbols indicated by different DMRS indexes is 1 and 2. For another example, the number of PDCCH symbols indicated by different DMRS indexes is 2 and 3. For another example, the number of PDCCH symbols indicated by different DMRS indexes is 1, 2, 3, and 4. When the number of PDCCH symbols is 4, the structure of PDCCH can be as shown in Figure 8: that is, the first X symbols are in the front, 4-X symbols are in the back, and X is 1, 2, or 3. In Figure 8, the first X symbols are the first PDCCH, and 4-X symbols are the second PDCCH.

[0137] The PDCCH configuration information is used to indicate the PDCCH subcarrier spacing. For example, DMRS can be used to indicate that the PDCCH subcarrier spacing is 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, or 960 kHz. For another example, DMRS can be used to indicate SCS1 and SCS2, or SCS1, SCS2, SCS3, and SCS4. Starting with SCS1, SCS2, SCS3, and SCS4 are multiples of SCS1.

[0138] The PDCCH configuration information is used to indicate the type of PDCCH. PDCCH types include common types and specific types. It should be understood that the PDCCH configuration information is used to indicate the type of PDCCH, that is, the DMRS is used to indicate the type of PDCCH, so that when the common synchronization signal (SS) and the specific SS overlap, the type of SS transmitted in the time slot can be determined, thereby reducing the number of blind detections of the first node, thereby reducing the power consumption of the first node.

[0139] The PDCCH configuration information is used to indicate at least one of the type, size, and format of the DCI carried by the PDCCH. The DCI type includes uplink or downlink, specific or common. It should be understood that the PDCCH configuration information is used to indicate at least one of the type, size, and format of the DCI carried by the PDCCH, that is, using DMRS to indicate at least one of the type, size, and format of the DCI carried by the PDCCH, which helps reduce the number of blind detections of the first node, thereby reducing the power consumption of the first node.

[0140] The PDCCH configuration information is used to indicate the number of PDCCHs.

[0141] In some embodiments, the information carried by the DMRS is used to indicate information about the PDSCH scheduled by the PDCCH. The information about 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); and frequency domain resource allocation (FDRA).

[0142] The transport block size includes at least one TBS. The transport block format or pattern is used to determine at least one parameter set. The parameter set includes 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, and subcarrier spacing.

[0143] It should be noted that the index of the information of the PDSCH scheduled by the PDCCH is configured by the second node in a list or group, and the DMRS indicates an index in the list or group or indicates one of the lists or groups. The information carried by the DMRS is used to indicate the information of the PDSCH scheduled by the PDCCH, which is suitable for extremely small data transmission or fixed-size data transmission, such as voice call (voice over internet protocol, VoIP) service. For example, as shown in Figure 9, it is a schematic diagram of the information carried by the DMRS used to indicate the information of the PDSCH scheduled by the PDCCH according to an embodiment of the present disclosure.

[0144] In some embodiments, the information carried by the PDCCH includes first scheduling information of the shared channel and / or the PDCCH. The first scheduling information includes at least one of the following: first resources, second resources, configuration information of the PDCCH, and scheduling information of the shared channel.

[0145] As an example, the first resource includes at least one of the following: a first time domain resource; a first number of symbols; first bitmap information; or 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; second bitmap information; or a second frequency domain resource. That is, if the first resource is a first time domain resource, the second resource is a second time domain resource.

[0146] 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; the first resource includes the second resource in the frequency domain; the first resource includes the second resource in the time domain; 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 based on the first resource.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] Time-frequency domain resources include time domain resources and / or frequency domain resources. The time domain resource location includes the symbol position, starting symbol, and number of symbols in the time domain. The frequency domain resource location includes the resource units in the frequency domain, such as the subcarrier / RE / RB (resource block) position, the number of resource units, and the starting position of the resource unit. The time-frequency domain resource location includes the resource unit corresponding to the resource, such as the position of the RE.

[0151] In some embodiments, the second resource is determined according to the first resource, including: determining a portion of resources belonging to the PDCCH or PDSCH based on resources of the PDCCH and a shared channel.

[0152] 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, a 14-bit bitmap can be used to indicate the time domain resources of one or more symbols in a slot. For example, an N-bit bitmap can be used to indicate the frequency domain resources of one or more RBs in a BWP or a bandwidth, where N is an integer greater than or equal to 1.

[0153] Exemplarily, the information carried by the PDCCH includes first scheduling information of the shared channel and / or PDCCH, indicating that the DCI of the first PDCCH indicates scheduling information of the second PDCCH and / or PDSCH.

[0154] In some embodiments, the scheduling information of the shared channel includes at least one of the following: FDRA; TDRA; virtual resource block to physical resource block mapping (VRB-to-PRB mapping); new data index (NDI); redundancy version (RV); hybrid automatic repeat request (HARQ) process number; downlink allocation index; transmit power control (TPC command for scheduled PUCCH); PUCCH resource indicator; PDSCH-to-HARQ_feedback timing indicator; extended cyclic prefix (ChannelAccess-CPext) in channel access control; subcarrier spacing.

[0155] 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, as shown in Figure 10, it is a schematic diagram of chain scheduling of PDCCH and PDSCH according to an embodiment of the present disclosure. Referring to Figure 10, when the information carried by PDCCH includes the scheduling information of PDSCH, and under the condition that there is a business in advance, 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 information carried by DCCH includes the scheduling information of PDSCH. The main feature is that one PDCCH needs to schedule one PDSCH and one PDCCH. The "X" in Figure 10 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 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.

[0156] In some embodiments, the information carried by the PDCCH may also indicate that PDCCH monitoring is required at the next PDCCH monitoring opportunity, or that there is PDCCH transmission at the next PDCCH monitoring opportunity and the first node needs to perform PDCCH monitoring.

[0157] In some embodiments, the configuration information of 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 bearer size; aggregation level; candidate set position; interleaving information; mapping type information; DMRS sequence information, such as the index of the sequence.

[0158] In some embodiments, 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.

[0159] In some embodiments, the first indication message is used to determine parameters of the PDCCH, and the first indication message includes scheduling information of the shared channel. The first indication message is carried by the PDCCH or the DCI.

[0160] In some embodiments, the first indication message is used to determine parameters of a PDCCH, and the information carried by the PDCCH includes scheduling information of a physical shared channel.

[0161] 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. The shared channel includes a physical downlink shared channel, which includes at least two types: a first type physical shared channel and a second type physical shared channel.

[0162] In some embodiments, the DCI or PDCCH uses the same mapping method as the shared channel.

[0163] In some embodiments, the physical downlink shared channel carries the PDCCH, or one of the uplink control information and the downlink DCI.

[0164] In some embodiments, the first type of physical shared channel carries PDCCH or DCI, and the second type of physical shared channel carries scheduled data or PDSCH.

[0165] In some embodiments, a shared channel is used to carry one DCI or multiple DCIs. The DCI is carried on the shared channel based on a merged manner, or the DCI is carried on the shared channel based on an independent manner. Exemplarily, the DCI-based merged manner means that the information of multiple DCIs is merged together, and there is only one DCI. The DCI-based independent manner means that each DCI has its own cyclic redundancy check (CRC), radio network temporary identifier (RNTI) or 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.

[0166] In some embodiments, the PDCCH includes a first PDCCH and a second PDCCH. In the case where the PDCCH is the first PDCCH, the information carried by the first PDCCH includes scheduling information of the second PDCCH. The scheduling information of the PDCCH 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; transmission power control (TPC) command for scheduling 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 time slot; duration; monitoring symbols within a time 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; number of DCIs; number of blind detections.

[0167] 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 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.

[0168] As an example, the time domain position of the first PDCCH is before the time domain position of the second PDCCH, which can be the end symbol of the first PDCCH and before the start symbol of the second PDCCH. A symbol is a time domain resource unit, and symbols include other time units such as time slots, subframes, and radio frames, as well as time units such as milliseconds, microseconds, and seconds.

[0169] As an example, when the first PDCCH is mapped according to CCE and the second PDCCH is mapped according to PRB, the basic resource unit of the first PDCCH is CCE, the basic resource unit of the second PDCCH is RE, and the frequency domain basic resource unit is RB.

[0170] As an example, the first PDCCH is mapped according to the first CCE, and the second PDCCH is mapped according to the second CCE. The number of resource units contained in the first CCE may be different from the number of resource units contained in the second CCE, for example, the number of REs is different, the number of RUs (resource units), the number of time domain symbols is different, the number of frequency domain REs is different, etc.

[0171] As an example, when the first PDCCH corresponds to a first reference signal and the second PDCCH corresponds to a second reference signal, the pattern, number of REs, or location of resource elements of the first reference signal is different from that of the second reference signal.

[0172] In some embodiments, the second PDCCH is used to schedule a shared channel. 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. Alternatively, the second PDCCH precedes the shared channel.

[0173] As an example, the above mapping methods include layer mapping, mapping to VRB, VRP mapping to PRB, continuous resource mapping or discrete resource mapping.

[0174] 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 first 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.

[0175] In some embodiments, the first indication message is based on at least one of the following: DCI, MAC CE signaling, RRC signaling, sequence, wake-up signal.

[0176] In some embodiments, as shown in Figure 11, the present disclosure also provides another communication method, which is applied to a second node. The second node may be the second node 120 shown in Figure 1 above. The communication method includes the following S201 and S202.

[0177] In S201, a first indication message or a parameter of a PDCCH is sent.

[0178] In some embodiments, after configuring the first indication message, the second node may send the first indication message to the first node. The first indication message is used to determine the parameters of the PDCCH.

[0179] In some embodiments, the second node configures the first indication message, which may be that the second node predicts communication services in a future period of time based on artificial intelligence (AI), and then configures the first indication message based on the predicted communication services in the future period of time.

[0180] In S202, the PDCCH is processed based on the first indication message or the parameters of the PDCCH.

[0181] In some embodiments, the second node processes the PDCCH, including transmitting the PDCCH, sending the PDCCH, etc.

[0182] In some embodiments, different first indication messages may determine different PDCCH parameters or different PDCCH processing rules. The first indication message includes first information and second information, and the first PDCCH may be processed based on the first information and the second PDCCH may be processed based on the second information. The first indication message is used to indicate or select PDCCH parameters.

[0183] 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.

[0184] In some embodiments, 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. Each parameter set includes at least one parameter.

[0185] In some embodiments, the first category of indication information is associated with the second category of indication information and / or the third category of indication information; or, the second category of indication information and / or the third category of indication information is associated with the first category of indication information; or, the first category of indication information includes the second category of indication information and / or the third category of indication information; or, the second category of indication information and / or the third category of indication information includes the first category of indication information; or, the second category of indication information and the third category of indication information are associated.

[0186] 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 cycle, at least one time parameter, and at least one subcarrier interval.

[0187] In some embodiments, the first type of indication information is used to determine at least one time domain location for processing the PDCCH.

[0188] In some embodiments, 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 location of the PDCCH monitoring opportunity; and the time period information is used to determine the time of the PDCCH monitoring opportunity.

[0189] 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.

[0190] 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 PDCCH monitoring opportunities; number of symbols.

[0191] In some embodiments, the candidate set position comprises 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, a candidate set starting position of a specific aggregation level.

[0192] 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; CCE size; number of CCEs at the aggregation level; and CCE determination method.

[0193] In some embodiments, the third type of indication information includes at least one of the following: QCL information; DMRS scrambling information; transmission point information; beam configuration information; PCI information; physical area information; virtual cell information; and cell information.

[0194] In some embodiments, the first indication message, PDCCH parameters, or PDCCH processing are activated or deactivated according to activation signaling or deactivation signaling; or, the first indication message, PDCCH parameters, or PDCCH processing are determined according to downlink control information (DCI) signaling, media access control element (MAC CE) signaling, a wake-up signal or sequence; or, the PDCCH parameters, or PDCCH processing are activated or deactivated according to activation signaling or deactivation signaling. The activation signaling or deactivation signaling is determined by the first indication message.

[0195] In some embodiments, the second node may further send a second indication message to the first node. The second indication message is used to indicate that under a specific condition, the PDCCH is to be processed according to the second indication message.

[0196] In some embodiments, when no downlink control information (DCI) is detected when processing the PDCCH, the PDCCH is processed according to the second indication message; when DCI is detected when processing the PDCCH, the PDCCH is processed according to the indication of the DCI and the second indication message; when activation signaling or deactivation signaling is received, the PDCCH is processed according to the second indication message; when the activation condition or deactivation condition is met, 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 met, the PDCCH is processed according to the second indication message, the specific parameters include statistical parameters, threshold values, predefined values ​​or parameter values ​​configured by high-level parameters; based on negative acknowledgment NACK feedback information or non-transmission of feedback information of the physical downlink shared channel PDSCH scheduled by the PDCCH, the PDCCH is processed according to the second indication message; when specific information is sent, the PDCCH is processed according to the second indication message, the specific information including PDCCH parameters, NACK feedback information, or result information.

[0197] 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.

[0198] In some embodiments, according to the second indication message, the PDCCH is processed at a candidate set position other than the first candidate set position; according to the second indication message, the PDCCH is processed at a candidate set position other than the candidate set position of a specific aggregation level.

[0199] 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.

[0200] In some embodiments, the first indication message includes information carried by a DMRS.

[0201] In some embodiments, the information carried by the DMRS is used to indicate PDCCH configuration information. The PDCCH configuration information is used for at least one of the following: indicating the number of PDCCH symbols; indicating the subcarrier spacing of the PDCCH; indicating the type of the PDCCH, which may include a common type or a specific type; indicating at least one of the type, size, and format of the DCI carried by the PDCCH; and indicating the number of PDCCHs.

[0202] In some embodiments, 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: TBS; transport block format or pattern; MCS; modulation order; TDRA; and FDRA.

[0203] In some embodiments, the information carried by the PDCCH includes first scheduling information of the shared channel and / or the PDCCH.

[0204] In some embodiments, the first scheduling information includes at least one of the following: first resources, second resources, configuration information of PDCCH, and scheduling information of a shared channel.

[0205] 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.

[0206] 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; the first resource includes the second resource in the frequency domain; the first resource includes the second resource in the time domain; 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 based on 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.

[0207] In some embodiments, 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; NDI; RV; HARQ process number; downlink allocation index; TPC command for scheduling PUCCH; PUCCH resource indicator; PDSCH to HARQ feedback timer; extended cyclic prefix in channel access control; subcarrier spacing.

[0208] In some embodiments, 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.

[0209] 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. The shared channel includes a physical downlink shared channel, which includes at least two types: a first type physical shared channel and a second type physical shared channel.

[0210] In some embodiments, the DCI is used to indicate scheduling information of the first type of physical shared channel.

[0211] In some embodiments, the PDCCH is a first PDCCH, and information carried by the first PDCCH includes scheduling information of a second PDCCH.

[0212] 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 a first reference signal, and the second PDCCH corresponds to a second reference signal.

[0213] In some embodiments, the second PDCCH is used to schedule a shared channel, and 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.

[0214] In some embodiments, the first indication message is based on at least one of the following: DCI, MAC CE signaling, RRC signaling, sequence, wake-up signal.

[0215] It should be noted that, for the description of the first indication message, reference may be made to the corresponding description in the embodiment shown in FIG. 2 , which will not be elaborated here.

[0216] In an embodiment 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 PDCCH blind detection, and reduce the power consumption of the first node.

[0217] The above mainly introduces the solution provided by the present disclosure from the perspective of the interaction between each node. It is understandable that each node, such as the first node or the second node, includes a hardware structure and / or software module corresponding to the execution of each function in order to realize the above functions. 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 function is executed in a hardware or computer software driven hardware manner depends on the specific application and design constraints of the technical solution. Professional and technical personnel 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.

[0218] The embodiment of the present disclosure can divide the functional modules of the first node or the second node according to the above-mentioned method embodiment. 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-mentioned integrated module can be implemented in the form of hardware or software. It should be noted that the division of modules in the embodiment of the present disclosure is schematic and is only a logical function division. There may be other division methods in actual implementation. The following is an example of dividing each functional module corresponding to each function.

[0219] FIG12 is a schematic diagram showing the composition of a communication device according to an embodiment of the present disclosure. As shown in FIG12 , the communication device 30 includes a receiving unit 301 and a processing unit 302 .

[0220] The communication device 30 may be the first node or a chip in the first node. When the communication device 30 is used to implement the function of the first node in the above embodiment, each unit is used to implement the following functions.

[0221] The receiving unit 301 is configured to receive a first indication message, where the first indication message is used to determine parameters of a physical PDCCH;

[0222] The processing unit 302 is configured to process the PDCCH based on the first indication message.

[0223] In some embodiments, different first indication messages may determine different PDCCH parameters or different PDCCH processing rules. The first indication message includes first information and second information. The first PDCCH is processed based on the first information, and the second PDCCH is processed based on the second information. The first indication message is used to indicate or select PDCCH parameters.

[0224] 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.

[0225] In some embodiments, 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. Each parameter set includes at least one parameter.

[0226] In some embodiments, the first category of indication information is associated with the second category of indication information and / or the third category of indication information; or, the second category of indication information and / or the third category of indication information is associated with the first category of indication information; or, the first category of indication information includes the second category of indication information and / or the third category of indication information; or, the second category of indication information and / or the third category of indication information includes the first category of indication information; or, the second category of indication information and the third category of indication information are associated.

[0227] 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 cycle, at least one time parameter, and at least one subcarrier interval.

[0228] In some embodiments, the first type of indication information is used to determine at least one time domain location for processing the PDCCH.

[0229] In some embodiments, 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 location of the PDCCH monitoring opportunity; and the time period information is used to determine the time of the PDCCH monitoring opportunity.

[0230] 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.

[0231] 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 PDCCH monitoring opportunities; number of symbols.

[0232] In some embodiments, the candidate set position comprises 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, a candidate set starting position of a specific aggregation level.

[0233] 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; CCE size; number of CCEs at the aggregation level; and CCE determination method.

[0234] In some embodiments, the third type of indication information includes at least one of the following: QCL information; DMRS scrambling information; transmission point information; beam configuration information; PCI information; physical area information; virtual cell information; and cell information.

[0235] In some embodiments, the first indication message, PDCCH parameters, or PDCCH processing are activated or deactivated according to activation signaling or deactivation signaling; or, the first indication message, PDCCH parameters, or PDCCH processing are determined according to downlink control information (DCI) signaling, media access control element (MAC CE) signaling, a wake-up signal or sequence; or, the PDCCH parameters, or PDCCH processing are activated or deactivated according to activation signaling or deactivation signaling. The activation signaling or deactivation signaling is determined by the first indication message.

[0236] In some embodiments, the processing unit 302 is further configured to process the PDCCH according to the second indication message under specific conditions.

[0237] In some embodiments, the processing unit 302 is, for example, used for at least one of the following: processing the PDCCH according to the second indication message when no downlink control information (DCI) is detected; processing the PDCCH according to the indication of the DCI and the second indication message when DCI is detected when processing the PDCCH; processing the PDCCH according to the second indication message when activation signaling or deactivation signaling is received; processing the PDCCH according to the second indication message when the activation condition or deactivation condition is met; processing the PDCCH according to the second indication message when a timer timeout is detected; processing the PDCCH according to the second indication message when specific parameters are not met, the specific parameters including statistical parameters, threshold values, predefined values ​​or parameter values ​​configured by high-level parameters; processing the PDCCH according to the second indication message based on negative acknowledgment NACK feedback information or non-transmission of feedback information of the physical downlink shared channel PDSCH scheduled by the PDCCH; processing the PDCCH according to the second indication message when specific information is sent, the specific information including parameters for monitoring the PDCCH, NACK feedback information, or result information.

[0238] 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.

[0239] In some embodiments, the processing unit 302 is, for example, used for at least one of the following: processing PDCCH at a candidate set position other than the first candidate set position according to the second indication message; processing PDCCH at a candidate set position other than the candidate set position of a specific aggregation level according to the second indication message.

[0240] In some embodiments, the first candidate set position or the candidate set position of a specific aggregation level is determined according to a first indication message.

[0241] 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.

[0242] In some embodiments, the first indication message includes information carried by a DMRS.

[0243] In some embodiments, the information carried by the DMRS is used to indicate PDCCH configuration information. The PDCCH configuration information is used for at least one of the following: indicating the number of PDCCH symbols; indicating the subcarrier spacing of the PDCCH; indicating the type of the PDCCH, which may include a common type or a specific type; indicating at least one of the type, size, and format of the DCI carried by the PDCCH; and indicating the number of PDCCHs.

[0244] In some embodiments, the information carried by the DMRS is used to indicate information about the PDSCH scheduled by the PDCCH. The information about 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); and frequency domain resource allocation (FDRA).

[0245] In some embodiments, the information carried by the PDCCH includes first scheduling information of the shared channel and / or the PDCCH.

[0246] In some embodiments, the first scheduling information includes at least one of the following: first resources, second resources, configuration information of PDCCH, and scheduling information of a shared channel.

[0247] 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.

[0248] 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; the first resource includes the second resource in the frequency domain; the first resource includes the second resource in the time domain; 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 based on 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.

[0249] In some embodiments, 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; transmission power control (TPC) command for scheduling physical uplink control channel (PUCCH); PUCCH resource indicator; feedback timer from PDSCH to HARQ; extended cyclic prefix in channel access control; subcarrier spacing.

[0250] In some embodiments, the configuration information of 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 bearer size; aggregation level; candidate set position; interleaving information; mapping type information; DMRS sequence information.

[0251] In some embodiments, 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.

[0252] 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. The shared channel includes a physical downlink shared channel, which includes at least two types: a first type physical shared channel and a second type physical shared channel.

[0253] In some embodiments, the DCI is used to indicate scheduling information of the first type of physical shared channel.

[0254] In some embodiments, the PDCCH is a first PDCCH, and information carried by the first PDCCH includes scheduling information of a second PDCCH.

[0255] 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 blocks (PRBs); 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.

[0256] In some embodiments, the second PDCCH is used to schedule a shared channel, and 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.

[0257] In some embodiments, the first indication message is based on at least one of the following: DCI, MAC CE signaling, RRC signaling, sequence, wake-up signal.

[0258] FIG13 is a schematic diagram showing the composition of another communication device according to an embodiment of the present disclosure. As shown in FIG13 , the communication device 40 includes a sending unit 401 and a processing unit 402 .

[0259] The communication device 40 may be the second node or a chip in the second node. When the communication device 40 is used to implement the function of the second node in the above embodiment, each unit is used to implement the following functions, for example.

[0260] The sending unit 401 is configured to send a first indication message, where the first indication message is used to determine PDCCH parameters;

[0261] The processing unit 402 is configured to process the PDCCH based on the first indication message.

[0262] In some embodiments, different first indication messages may determine different PDCCH parameters or different PDCCH processing rules. The first indication message includes first information and second information. The first PDCCH is processed based on the first information, and the second PDCCH is processed based on the second information. The first indication message is used to indicate or select PDCCH parameters.

[0263] 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.

[0264] In some embodiments, 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. Each parameter set includes at least one parameter.

[0265] In some embodiments, the first category of indication information is associated with the second category of indication information and / or the third category of indication information; or, the second category of indication information and / or the third category of indication information is associated with the first category of indication information; or, the first category of indication information includes the second category of indication information and / or the third category of indication information; or, the second category of indication information and / or the third category of indication information includes the first category of indication information; or, the second category of indication information and the third category of indication information are associated.

[0266] 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 cycle, at least one time parameter, and at least one subcarrier interval.

[0267] In some embodiments, the first type of indication information is used to determine at least one time domain location for processing the PDCCH.

[0268] In some embodiments, 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 location of the PDCCH monitoring opportunity; and the time period information is used to determine the time of the PDCCH monitoring opportunity.

[0269] 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.

[0270] In some embodiments, the first type of 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 PDCCH monitoring opportunities; number of symbols.

[0271] In some embodiments, the candidate set position comprises 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, a candidate set starting position of a specific aggregation level.

[0272] 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; CCE size; number of CCEs at the aggregation level; and CCE determination method.

[0273] In some embodiments, the third type of indication information includes at least one of the following: QCL information; DMRS scrambling information; transmission point information; beam configuration information; PCI information; physical area information; virtual cell information; and cell information.

[0274] In some embodiments, the first indication message, PDCCH parameters, or PDCCH processing are activated or deactivated according to activation signaling or deactivation signaling; or, the first indication message, PDCCH parameters, or PDCCH processing are determined according to downlink control information (DCI) signaling, media access control element (MAC CE) signaling, a wake-up signal or sequence; or, the PDCCH parameters, or PDCCH processing are activated or deactivated according to activation signaling or deactivation signaling. The activation signaling or deactivation signaling is determined by the first indication message.

[0275] In some embodiments, the sending unit 401 is further configured to send a second indication message. The second indication message is used to indicate that under a specific condition, the PDCCH is to be processed according to the second indication message.

[0276] In some embodiments, under specific conditions, processing the PDCCH according to the second indication message includes at least one of the following: processing the PDCCH according to the second indication message when no downlink control information DCI is detected during processing; processing the PDCCH according to the second indication message when DCI is detected during processing the PDCCH; processing the PDCCH according to the 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 the activation condition or deactivation condition is met; processing the PDCCH according to the second indication message when a timer timeout is detected; processing the PDCCH according to the second indication message when specific parameters are not met, the specific parameters including statistical parameters, threshold values, predefined values ​​or parameter values ​​configured by high-level parameters; processing the PDCCH according to the second indication message based on negative acknowledgment NACK feedback information or non-transmission of feedback information of the physical downlink shared channel PDSCH scheduled by the PDCCH; processing the PDCCH according to the second indication message when specific information is sent, the specific information including parameters for monitoring the PDCCH, NACK feedback information, or result information.

[0277] 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.

[0278] In some embodiments, processing PDCCH according to the second indication message includes at least one of the following: processing PDCCH at a candidate set position other than the first candidate set position according to the second indication message; processing PDCCH at a candidate set position other than the candidate set position of a specific aggregation level according to the second indication message.

[0279] In some embodiments, the first candidate set position or the candidate set position of a specific aggregation level is determined according to a first indication message.

[0280] 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 element (MAC CE) signaling, DCI, wake-up signal, sequence.

[0281] In some embodiments, the first indication message includes information carried by a DMRS.

[0282] In some embodiments, the information carried by the DMRS is used to indicate PDCCH configuration information. The PDCCH configuration information is used for at least one of the following: indicating the number of PDCCH symbols; indicating the subcarrier spacing of the PDCCH; indicating the type of the PDCCH, which may include a common type or a specific type; indicating at least one of the type, size, and format of the DCI carried by the PDCCH; and indicating the number of PDCCHs.

[0283] In some embodiments, 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: TBS; transport block format or pattern; MCS; modulation order; TDRA; and FDRA.

[0284] In some embodiments, the information carried by the PDCCH includes first scheduling information of the shared channel and / or the PDCCH.

[0285] In some embodiments, the first scheduling information includes at least one of the following: first resources, second resources, configuration information of PDCCH, and scheduling information of a shared channel.

[0286] 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.

[0287] 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; the first resource includes the second resource in the frequency domain; the first resource includes the second resource in the time domain; 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 based on 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.

[0288] In some embodiments, 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; transmission power control (TPC) command for scheduling physical uplink control channel (PUCCH); PUCCH resource indicator; feedback timer from PDSCH to HARQ; extended cyclic prefix in channel access control; subcarrier spacing.

[0289] In some embodiments, the configuration information of 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 bearer size; aggregation level; candidate set position; interleaving information; mapping type information; DMRS sequence information.

[0290] In some embodiments, 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.

[0291] 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. The shared channel includes a physical downlink shared channel, which includes at least two types: a first type physical shared channel and a second type physical shared channel.

[0292] In some embodiments, the DCI is used to indicate scheduling information of the first type of physical shared channel.

[0293] In some embodiments, the PDCCH is a first PDCCH, and information carried by the first PDCCH includes scheduling information of a second PDCCH.

[0294] 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 blocks (PRBs); 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.

[0295] In some embodiments, the second PDCCH is used to schedule a shared channel, and 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.

[0296] 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.

[0297] It should be noted that the units in Figures 12 and 13 may also be referred to as modules. For example, the sending unit may be referred to as a sending module. In addition, in the embodiments shown in Figures 12 and 13, the names of the units may not be those shown in the figures. For example, the sending unit may be referred to as a communication unit, and the receiving unit may be referred to as a communication unit.

[0298] If the various units in Figures 12 and 13 are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present disclosure is essentially or the part that contributes to the relevant technology or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the various embodiments of the present disclosure. The storage medium for storing computer software products includes various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0299] When the communication device 30 or 40 implements the functions of the integrated modules in hardware, the present disclosure provides a schematic structural diagram of the communication device. As shown in Figure 14, the communication device 50 includes: a processor 502, a communication interface 503, and a bus 504. In some embodiments, the communication device 50 may also include a memory 501.

[0300] The processor 502 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the present disclosure. The processor 502 may 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 device, a transistor logic device, a hardware component, or any combination thereof, and may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the present disclosure. The processor 502 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP (digital signal processor) and a microprocessor, and the like.

[0301] The communication interface 503 is used to connect to other devices via a communication network, such as Ethernet, wireless access network, or wireless local area network (WLAN).

[0302] The memory 501 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0303] As an implementation, the memory 501 may exist independently of the processor 502. The memory 501 may be connected to the processor 502 via a bus 504 and used to store 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 in the embodiments of the present disclosure can be implemented.

[0304] In another implementation, the memory 501 may also be integrated with the processor 502 .

[0305] Bus 504 can be an Extended Industry Standard Architecture (EISA) bus, etc. Bus 504 can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, FIG14 shows only one thick line, but this does not mean that there is only one bus or only one type of bus.

[0306] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and conciseness of the description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, 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.

[0307] The present disclosure also provides a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium). All or part of the processes in the above-mentioned method embodiments can be completed by computer instructions to instruct the relevant hardware. The program can be stored in the above-mentioned computer-readable storage medium. When the program is executed, it may include the processes of the above-mentioned method embodiments. The computer-readable storage medium can be the memory or memory of any of the above-mentioned embodiments. The above-mentioned computer-readable storage medium can also be an external storage device of the above-mentioned first node or second node, such as a plug-in hard disk, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, a flash card (flash card), etc. equipped on the above-mentioned first node or second node. Further, the above-mentioned computer-readable storage medium can also include both the internal storage unit of the above-mentioned first node or second node and an external storage device. The above-mentioned computer-readable storage medium is used to store the above-mentioned computer program and other programs and data required by the above-mentioned first node or second node. The above-mentioned computer-readable storage medium can also be used to temporarily store data that has been output or is to be output.

[0308] The present disclosure also provides a computer program product, which includes a computer program. When the computer program product is run on a computer, the computer is caused to execute any one of the communication methods provided in the above embodiments.

[0309] In an embodiment 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; the first node processes 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 number of blind detections of the PDCCH, and reduce the power consumption of the first node.

[0310] Although the present disclosure is described herein in conjunction with various embodiments, in the process of implementing the disclosure for which protection is sought, those skilled in the art may understand and implement other variations of the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple components. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0311] Although the present disclosure has been described with reference to specific features and embodiments thereof, it will be apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present disclosure. Accordingly, this specification and the drawings are merely illustrative of the present disclosure as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present disclosure. Obviously, those skilled in the art may make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, the present disclosure is intended to encompass such modifications and variations if they fall within the scope of the claims of the present disclosure and their equivalents.

[0312] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or replacements within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A communication method, applied to a first node, comprising: 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, wherein At least one of the following exists: 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, wherein 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, wherein: 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 first parameter set, the second parameter set, and the third parameter set each include at least one parameter.

5. The method according to claim 3, wherein 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, wherein: 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, wherein: 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, wherein: The at least one time parameter is used to determine one or more time domain locations for processing the PDCCH; The at least one time node information is used to determine the time domain position of the PDCCH monitoring opportunity; The at least one time period information is used to determine the time of the PDCCH monitoring opportunity.

9. The method according to claim 8, wherein 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, wherein: 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, wherein: 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, wherein: 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, wherein: The third type of indication information includes at least one of the following: Quasi-co-sited QCL information; Scrambling information of a 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 DCI signaling, media access control element MAC CE signaling, a wake-up signal or sequence; or, Activate or deactivate the parameters of the PDCCH or the processing of the PDCCH according to activation signaling or deactivation signaling, wherein the activation signaling or the deactivation signaling is determined by the first indication message.

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

16. The method according to claim 15, wherein 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 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 negative acknowledgement (NACK) feedback information or when feedback information of a physical downlink shared channel (PDSCH) scheduled by the PDCCH is not sent, 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 message, where the specific information includes parameters of the PDCCH, NACK feedback information, or result information.

17. The method according to claim 15, wherein: 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; BWP; Frequency band information; Carrier information; Transmission point information or transceiver point TRP information; Port information; DMRS information.

18. The method according to claim 15, wherein 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, wherein 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, wherein 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 a common type or a specific type; 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, wherein 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 the PDCCH.

25. The method according to claim 24, wherein 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, wherein 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, wherein 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, wherein 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, wherein 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 of 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, wherein At least one of the following exists: 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 one or more DCIs are used to indicate scheduling information of the first-type physical shared channel.

33. The method of 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 of 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 of 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, applied to a second node, comprising: Sending 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.

38. A communication device comprising: A memory and a processor; wherein the memory is coupled to the processor; the memory is used to store instructions executable by the processor; when the processor executes the instructions, it performs the method according to any one of claims 1-37.

39. A computer-readable storage medium, wherein: The computer-readable storage medium stores computer instructions, which, when executed on a computer, enable the computer to perform the method according to any one of claims 1 to 37.

Images