A method and apparatus used in a node for wireless communication

Abstract

A method and apparatus used in a node for wireless communication are disclosed. The node receives a first information block and monitors a first control channel candidate, the first information block is used to determine M1 control channel candidates; the first control channel candidate is one of the M1 control channel candidates; a second control channel candidate is a control channel candidate that occupies the same CCE as the first control channel candidate; the first control channel candidate and the second control channel candidate have the same scrambling, the size of the format of the DCI carried by the first control channel candidate and the size of the format of the DCI carried by the second control channel candidate are the same; the index of the first control channel candidate and the index of the second control channel candidate are not equal; the association state of the second control channel candidate is used to determine whether the second control channel candidate is counted in the number of monitoring times. The present application improves the performance of PDCCH.

Description

[0001] This application is a divisional application of the following original application:

[0002] --Original application date: September 25, 2020

[0003] --Original application number: 202011022279.5

[0004] --Original application title: A method and apparatus used in a node for wireless communication Technical Field

[0005] This application relates to transmission methods and apparatus in wireless communication systems, and more particularly to transmission schemes and apparatus for control channels in wireless communication. Background Technology

[0006] The application scenarios of future wireless communication systems are becoming increasingly diversified, and different application scenarios place different performance requirements on the system. In order to meet the different performance requirements of various application scenarios, the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 plenary meeting decided to study New Radio (NR) (or 5G). At the 3GPP RAN #75 plenary meeting, the WI (Work Item) for New Radio (NR) was adopted, and the standardization work for NR began.

[0007] In New Radio (NR) technologies, multi-antenna technologies (such as Multiple Input Multiple Output (MIMO), Transmission Reception Point (TRP), and multiple panels) are crucial components. To adapt to more diverse application scenarios and meet higher demands, the 3GPP RAN#86 plenary meeting approved a further enhancement of MIMO under NR, WI, to support more robust, spectrally efficient, and versatile multi-antenna communication for a wider range of applications. Summary of the Invention

[0008] In multi-antenna systems, such as Transmission Reception Point (TRP) communication, the same channel or signal can be transmitted through multiple transmission and reception nodes to enhance transmission robustness. Release 16 (Rel-16) supports TRP transmission for the data channel, and 3GPP plans to introduce TRP transmission for the control channel in Release 17 (Rel-17).

[0009] This application discloses a solution to the transmission problem of the control channel in multi-antenna systems. It should be noted that the description in this application uses a multi-antenna system, particularly a multi-transmitter / receiver node transmission system, as a typical application scenario or example. This application is also applicable to other scenarios facing similar problems (such as scenarios with higher requirements for the robustness or coverage of the control channel, or scenarios requiring PDCCH association in addition to multi-transmitter / receiver node transmission, including but not limited to coverage enhancement systems, IoT (Internet of Things), URLLC (Ultra-Reliable Low Latency Communication) networks, and vehicle-to-everything (V2X) networks), and can achieve similar technical effects. Furthermore, adopting a unified solution for different scenarios (including but not limited to multi-antenna system scenarios) helps reduce hardware complexity and cost. Where there is no conflict, the embodiments and features in the first node device of this application can be applied to the second node device, and vice versa. In particular, the explanations of terms, nouns, functions, and variables in this application (unless otherwise specified) can refer to the definitions in the 3GPP specification protocols TS36, TS38, and TS37 series.

[0010] This application discloses a method for a first node in wireless communication, characterized by comprising:

[0011] Receive a first information block, which is used to determine M1 control channel candidates. Any one of the M1 control channel candidates occupies a positive integer number of CCEs, where M1 is a positive integer greater than 1.

[0012] Monitor the first control channel candidate, which is one of the M1 control channel candidates;

[0013] The second control channel candidate is a control channel candidate that occupies the same CCE as the first control channel candidate; the first control channel candidate and the second control channel candidate have the same scrambling code; the size of the DCI format carried by the first control channel candidate is the same as the size of the DCI format carried by the second control channel candidate; the index of the first control channel candidate and the index of the second control channel candidate are not equal; the association status of the second control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count, and the association status of the second control channel candidate includes at least one of the following: whether the second control channel candidate is associated with a control channel candidate, the control channel candidate associated with the second control channel candidate, and the association type of the second control channel candidate.

[0014] As an example, the associated state of the second control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count. Thus, when calculating the monitoring count of the PDCCH candidate, the transmission mode of PDCCH in the case of multiple TRPs or multiple panels is taken into account. While avoiding the monitoring count of the PDCCH candidate from exceeding the user equipment capacity or increasing the complexity of PDCCH reception, the monitoring capability of the PDCCH candidate is fully utilized, the blocking probability of PDCCH is reduced, and the scheduling flexibility is improved.

[0015] As an example, the association status of the second control channel candidate includes at least one of the following: whether the second control channel candidate is associated with a control channel candidate, the control channel candidate associated with the second control channel candidate, and the association type of the second control channel candidate. This allows the processing of the PDCCH receiver (e.g., whether soft combining is supported) to be considered when calculating the monitoring complexity of the PDCCH candidate. As a result, the number of monitoring times of the PDCCH candidate can change with the processing method of the PDCCH, ensuring that the monitoring complexity of the PDCCH candidate does not increase and improving the transmission performance of the PDCCH.

[0016] According to one aspect of this application, the method is characterized in that, when the second control channel alternative and a control channel alternative other than the second control channel alternative are associated, the quasi-co-address of the reference signal included in the second control channel alternative is different from the quasi-co-address of the reference signal included in the control channel alternative associated with the second control channel alternative.

[0017] According to one aspect of this application, the method is characterized in that the index of the control resource set applied to the search space set to which the first control channel candidate belongs is the same as the index of the control resource set applied to the search space set to which the second control channel candidate belongs; and the value of the carrier indication field included in the DCI carried by the first control channel candidate is equal to the value of the carrier indication field included in the DCI carried by the second control channel candidate.

[0018] According to one aspect of this application, the method is characterized in that, when the search space set to which the first control channel candidate belongs is the same as the search space set to which the second control channel candidate belongs, the index of the first control channel candidate is the index of the first control channel candidate in its search space set, and the index of the second control channel candidate is the index of the second control channel candidate in its search space set; when the search space set to which the first control channel candidate belongs is different from the search space set to which the second control channel candidate belongs, the index of the first control channel candidate is equal to the index of the search space set to which the first control channel candidate belongs, and the index of the second control channel candidate is equal to the index of the search space set to which the second control channel candidate belongs.

[0019] According to one aspect of this application, the above method is characterized by comprising:

[0020] Send the second information block;

[0021] The second information block is used to indicate whether the first node supports at least one of the following: association between two control channel candidates and association types between control channel candidates supported by the first node.

[0022] As an example, the introduction of the second information block enables user equipment to report the processing capabilities of PDCCH in multi-TRP or multi-panel scenarios to the network. The network can then optimize the transmission method of PDCCH, improving the transmission efficiency of PDCCH while meeting the needs of user equipment.

[0023] According to one aspect of this application, the method is characterized in that the first information block is used to determine that the second control channel candidate and the third control channel candidate are associated, and the first information block is used to determine the association type between the second control channel candidate and the third control channel candidate, wherein the third control channel candidate is a control channel candidate other than the second control channel candidate; there are overlapping time-domain resources between the time-domain resources indicated by the DCI carried by the second control channel candidate and the time-domain resources indicated by the DCI carried by the third control channel candidate.

[0024] As an example, the first information block simultaneously indicates the association and association type of the second control channel alternative and the third control channel alternative, maximizing the PDCCH configuration flexibility in multi-TRP or multi-panel scenarios. This allows the PDCCH configuration to switch between different modes (such as soft combining and multi-opportunity transmission), thereby achieving a balance between hierarchical gain and reduced blockage in multi-TRP scenarios and optimizing the PDCCH configuration.

[0025] According to one aspect of this application, the above method is characterized in that the CCE occupied by the first control channel candidate and the second control channel candidate belongs to a target time window in the time domain, the total number of monitoring counts of the first node in the target time window is not greater than a first threshold, the first threshold being a positive integer greater than 1; and the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the first threshold.

[0026] This application discloses a method for a second node in wireless communication, characterized by comprising:

[0027] Send a first information block, which is used to indicate M1 control channel candidates. Any one of the M1 control channel candidates occupies a positive integer number of CCEs, where M1 is a positive integer greater than 1.

[0028] A first control channel candidate is determined, wherein the first control channel candidate is one of the M1 control channel candidates;

[0029] The second control channel candidate is a control channel candidate that occupies the same CCE as the first control channel candidate; the first control channel candidate and the second control channel candidate have the same scrambling code; the size of the DCI format carried by the first control channel candidate is the same as the size of the DCI format carried by the second control channel candidate; the index of the first control channel candidate and the index of the second control channel candidate are not equal; the association status of the second control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count, and the association status of the second control channel candidate includes at least one of the following: whether the second control channel candidate is associated with a control channel candidate, the control channel candidate associated with the second control channel candidate, and the association type of the second control channel candidate.

[0030] According to one aspect of this application, the method is characterized in that, when the second control channel alternative and a control channel alternative other than the second control channel alternative are associated, the quasi-co-address of the reference signal included in the second control channel alternative is different from the quasi-co-address of the reference signal included in the control channel alternative associated with the second control channel alternative.

[0031] According to one aspect of this application, the method is characterized in that the index of the control resource set applied to the search space set to which the first control channel candidate belongs is the same as the index of the control resource set applied to the search space set to which the second control channel candidate belongs; and the value of the carrier indication field included in the DCI carried by the first control channel candidate is equal to the value of the carrier indication field included in the DCI carried by the second control channel candidate.

[0032] According to one aspect of this application, the method is characterized in that, when the search space set to which the first control channel candidate belongs is the same as the search space set to which the second control channel candidate belongs, the index of the first control channel candidate is the index of the first control channel candidate in its search space set, and the index of the second control channel candidate is the index of the second control channel candidate in its search space set; when the search space set to which the first control channel candidate belongs is different from the search space set to which the second control channel candidate belongs, the index of the first control channel candidate is equal to the index of the search space set to which the first control channel candidate belongs, and the index of the second control channel candidate is equal to the index of the search space set to which the second control channel candidate belongs.

[0033] According to one aspect of this application, the above method is characterized by comprising:

[0034] Receive the second information block;

[0035] The second information block is used to indicate whether the sender of the second information block supports at least one of the following: the association between two control channel alternatives and the association type between the control channel alternatives supported by the sender of the second information block.

[0036] According to one aspect of this application, the method is characterized in that the first information block is used to indicate that the second control channel candidate and the third control channel candidate are associated, and the first information block is used to indicate the association type between the second control channel candidate and the third control channel candidate, wherein the third control channel candidate is a control channel candidate other than the second control channel candidate; there are overlapping time-domain resources between the time-domain resources indicated by the DCI carried by the second control channel candidate and the time-domain resources indicated by the DCI carried by the third control channel candidate.

[0037] According to one aspect of this application, the method is characterized in that the CCE occupied by the first control channel candidate and the second control channel candidate belongs to a target time window in the time domain, the total number of monitoring counts of the first control channel candidate in the target time window is not greater than a first threshold, the first threshold being a positive integer greater than 1; and the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the first threshold.

[0038] This application discloses a first node device for wireless communication, characterized in that it includes:

[0039] The first transceiver receives the first information block, which is used to determine M1 control channel candidates. Any one of the M1 control channel candidates occupies a positive integer number of CCEs, where M1 is a positive integer greater than 1.

[0040] A first receiver monitors a first control channel candidate, which is one of the M1 control channel candidates.

[0041] The second control channel candidate is a control channel candidate that occupies the same CCE as the first control channel candidate; the first control channel candidate and the second control channel candidate have the same scrambling code; the size of the DCI format carried by the first control channel candidate is the same as the size of the DCI format carried by the second control channel candidate; the index of the first control channel candidate and the index of the second control channel candidate are not equal; the association status of the second control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count, and the association status of the second control channel candidate includes at least one of the following: whether the second control channel candidate is associated with a control channel candidate, the control channel candidate associated with the second control channel candidate, and the association type of the second control channel candidate.

[0042] This application discloses a second node device for wireless communication, characterized in that it includes:

[0043] The second transceiver sends a first information block, which is used to indicate M1 control channel candidates. Any one of the M1 control channel candidates occupies a positive integer number of CCEs, where M1 is a positive integer greater than 1.

[0044] The first transmitter determines a first control channel candidate, which is one of the M1 control channel candidates;

[0045] The second control channel candidate is a control channel candidate that occupies the same CCE as the first control channel candidate; the first control channel candidate and the second control channel candidate have the same scrambling code; the size of the DCI format carried by the first control channel candidate is the same as the size of the DCI format carried by the second control channel candidate; the index of the first control channel candidate and the index of the second control channel candidate are not equal; the association status of the second control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count, and the association status of the second control channel candidate includes at least one of the following: whether the second control channel candidate is associated with a control channel candidate, the control channel candidate associated with the second control channel candidate, and the association type of the second control channel candidate.

[0046] As an example, the method in this application has the following advantages:

[0047] - The method in this application takes into account the transmission mode of PDCCH in the case of multiple TRPs or multiple panels when calculating the number of monitoring of PDCCH candidates. While avoiding the number of monitoring of PDCCH candidates exceeding the capacity of user equipment or increasing the complexity of PDCCH reception, it makes full use of the monitoring capability of PDCCH candidates, reduces the probability of PDCCH blocking, and improves scheduling flexibility.

[0048] - The method in this application takes into account the receiver processing of PDCCH (such as whether soft combining is supported) when calculating the monitoring complexity of PDCCH candidates. As a result, the number of monitoring times of PDCCH candidates can be changed with the processing method of PDCCH, ensuring that the monitoring complexity of PDCCH candidates does not increase and improving the transmission performance of PDCCH.

[0049] - Using the method in this application, user equipment can report the processing capability of PDCCH in multiple TRP or multiple panel (Pannel) scenarios to the network, thereby enabling the network to optimize the transmission mode of PDCCH and meet the needs of user equipment while improving the transmission efficiency of PDCCH.

[0050] The method in this application maximizes the flexibility of PDCCH configuration in multi-TRP or multi-panel scenarios, allowing PDCCH configuration to switch between different modes (such as soft combining and multi-opportunity transmission), thereby achieving a balance between hierarchical gain and reduced blockage in multi-TRP scenarios and optimizing PDCCH configuration. Attached Figure Description

[0051] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0052] Figure 1 A flowchart illustrating a first information block and a first control channel alternative according to an embodiment of this application is shown;

[0053] Figure 2 A schematic diagram of a network architecture according to an embodiment of this application is shown;

[0054] Figure 3 A schematic diagram of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application is shown;

[0055] Figure 4 A schematic diagram of a first node device and a second node device according to an embodiment of this application is shown;

[0056] Figure 5 A flowchart illustrating a wireless signal transmission process according to an embodiment of this application is shown;

[0057] Figure 6 A schematic diagram of a second control channel alternative quasi-co-addressing according to an embodiment of this application is shown;

[0058] Figure 7 A schematic diagram illustrating the relationship between a first control channel alternative and a second control channel alternative according to an embodiment of this application is shown.

[0059] Figure 8 A schematic diagram illustrating the relationship between the index of a first control channel candidate and the index of a second control channel candidate according to an embodiment of this application is shown.

[0060] Figure 9 A schematic diagram illustrating the relationship between a second control channel alternative and a third control channel alternative according to an embodiment of this application is shown;

[0061] Figure 10 A schematic diagram of a first threshold according to an embodiment of this application is shown;

[0062] Figure 11 A structural block diagram of a processing apparatus in a first node device according to an embodiment of this application is shown;

[0063] Figure 12 A structural block diagram of a processing apparatus in a second node device according to an embodiment of this application is shown. Detailed Implementation

[0064] The technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0065] Example 1

[0066] Example 1 illustrates a flowchart of a first information block and a first control channel alternative according to an embodiment of this application, as shown in the attached diagram. Figure 1 As shown. In the appendix Figure 1 In the diagram, each box represents a step. It is particularly important to emphasize that the order of the boxes does not represent the chronological order of the steps they represent.

[0067] In Embodiment 1, the first node device of this application receives a first information block in step 101. The first information block is used to determine M1 control channel candidates, where any one of the M1 control channel candidates occupies a positive integer number of CCEs, and M1 is a positive integer greater than 1. In step 102, the first node device monitors the first control channel candidate, which is one of the M1 control channel candidates. The second control channel candidate is a control channel candidate that occupies the same number of CCEs as the first control channel candidate. The first control channel candidate and the second control channel candidate... The two control channel candidates have the same scrambling code, and the DCI format size carried by the first control channel candidate is the same as that carried by the second control channel candidate; the index of the first control channel candidate is not equal to the index of the second control channel candidate; the association status of the second control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count, and the association status of the second control channel candidate includes at least one of the following: whether the second control channel candidate is associated with a control channel candidate, the control channel candidate associated with the second control channel candidate, and the association type of the second control channel candidate.

[0068] As an example, the first information block is transmitted via an air interface.

[0069] As an example, the first information block is transmitted via a wireless interface.

[0070] As one embodiment, the first information block includes all or part of a higher-level signaling.

[0071] As one embodiment, the first information block includes all or part of a physical layer signaling.

[0072] As one embodiment, the first information block includes all or part of an RRC (Radio Resource Control) signaling.

[0073] As one embodiment, the first information block includes all or part of a MAC (Medium Access Control) layer signaling.

[0074] As one embodiment, the first information block includes all or part of a System Information Block (SIB).

[0075] As an example, the first information block is transmitted through a DL-SCH (Downlink Shared Channel).

[0076] As an example, the first information block is transmitted through a PDSCH (Physical Downlink Shared Channel).

[0077] As an example, the first information block is cell-specific.

[0078] As one embodiment, the first information block is UE-specific.

[0079] As one example, the first information block is configured per serving cell.

[0080] As one embodiment, the first information block includes all or part of a field of a DCI (Downlink Control Information) signaling.

[0081] As an example, the first information block includes more than one sub-information block, and each sub-information block included in the first information block is an IE (Information Element) or a field in the RRC signaling to which the first information block belongs; one sub-information block included in the first information block is used to indicate the M1 control channel candidates.

[0082] As an example, the first information block includes the field "CORESETPoolIndex" in the IE (Information Element) "ControlResourceSet" of an RRC signaling.

[0083] As an example, the first information block includes all or part of the fields in the IE (Information Element) "PDCCH-Config" of an RRC signaling.

[0084] As an example, the first information block includes all or part of the fields in the IE "ControlResourceSet" of the IE (Information Element) "PDCCH-Config" in an RRC signaling.

[0085] As an example, the first information block includes all or part of the fields in the "SearchSpace" of the IE (Information Element) in an RRC signaling.

[0086] As an example, the above sentence "the first information block is used to determine M1 control channel candidates" includes the following meaning: the first information block is used by the first node device in this application to determine the M1 control channel candidates.

[0087] As an example, the sentence "The first information block is used to determine M1 control channel candidates" above includes the following meaning: The first information block is used to explicitly indicate the M1 control channel candidates.

[0088] As an example, the sentence "The first information block is used to determine M1 control channel candidates" above includes the following meaning: The first information block is used to implicitly indicate the M1 control channel candidates.

[0089] As an example, "the first information block is used to determine M1 control channel candidates" includes the following meanings: the first information block is used to determine N1 control channel candidates, any one of the M1 control channel candidates is one of the N1 control channel candidates, and N1 is a positive integer greater than M1; M1 is not greater than the first threshold in this application, and the first threshold is used to determine the M1 control channel candidates from the N1 control channel candidates.

[0090] As an example, any one of the M1 control channel candidates occupies a positive integer number of CCEs (Control Channel Elements) in the time-frequency domain.

[0091] As an example, the number of CCEs (Control Channel Elements) occupied by any one of the M1 control channel candidates is equal to one of 1, 2, 4, 8, or 16.

[0092] As an example, any one of the M1 control channel candidates is a Physical Downlink Control Channel (PDCCH) candidate.

[0093] As an example, any one of the M1 control channel candidates is a monitored physical downlink control channel candidate.

[0094] As an example, any one of the M1 control channel candidates is a Physical Downlink Control Channel (PDCCH) candidate using one or more DCI formats.

[0095] As an example, any one of the M1 control channel candidates is a Physical Downlink Control Channel (PDCCH) candidate with one or more DCI payload sizes.

[0096] As an example, any one of the M1 control channel candidates is a set of time-frequency resources carrying one or more specific DCI formats.

[0097] As an example, the M1 control channel candidates include two control channel candidates that occupy the same time-frequency resources.

[0098] As an example, any two control channel candidates among the M1 control channel candidates occupy different CCEs.

[0099] As an example, among the M1 control channel candidates, two control channel candidates occupy the same CCE set.

[0100] As an example, monitoring the first control channel candidate is decoding the first control channel candidate.

[0101] As an example, the monitoring of the first control channel candidate is the blind decoding of the first control channel candidate.

[0102] As an example, monitoring the first control channel candidate involves decoding and CRC verification of the first control channel candidate.

[0103] As an example, the monitoring of the first control channel candidate is the decoding of the first control channel candidate and the CRC check of the scrambled RNTI (Radio Network Temporary Identity).

[0104] As an example, the monitoring of the first control channel candidate is based on the decoding of the first control channel candidate according to the monitored DCI (Downlink Control Information) format(s).

[0105] As an example, the monitoring of the first control channel candidate is based on the decoding of the first control channel candidate according to one or more formats of the monitored DCI (Downlink Control Information).

[0106] As an example, the first control channel candidate is any one of the M1 control channel candidates.

[0107] As an example, the first control channel candidate is a specific control channel candidate among the M1 control channel candidates.

[0108] As an example, the first control channel candidate is the control channel candidate with the smallest index among the M1 control channel candidates.

[0109] As an example, the first control channel candidate is a control channel candidate other than the control channel candidate with the smallest index among the M1 control channel candidates.

[0110] As an example, the first node device in this application also monitors control channel alternatives other than the first control channel alternative among the M1 control channel alternatives.

[0111] As an example, the first node device in this application only monitors the first control channel candidate among the M1 control channel candidates.

[0112] As an example, the first node device in this application monitors the M1 control channel candidates less than M1.

[0113] As an example, the first node device in this application monitors the M1 control channel candidates the same number of times as M1.

[0114] As an example, the first node device in this application monitors the M1 control channel candidates more times than M1.

[0115] As an example, the first node device in this application monitors the second control channel alternative.

[0116] As an example, the first node device in this application does not monitor the second control channel alternative.

[0117] As an example, the first node device in this application monitors the second control channel alternative, and the second control channel alternative is counted in the monitoring count.

[0118] As an example, the first node device in this application does not monitor the second control channel alternative, and the second control channel alternative is not counted in the number of monitoring attempts.

[0119] As an example, the first node device in this application monitors the second control channel alternative, and the second control channel alternative is not counted in the number of monitoring times.

[0120] As one embodiment, whether the second control channel alternative is included in the monitoring count is related to whether the first node device in this application monitors the second control channel alternative.

[0121] As an example, whether the second control channel alternative is included in the monitoring count is irrelevant to whether the first node device in this application monitors the second control channel alternative.

[0122] As an example, the second control channel candidate is one of the M1 control channel candidates.

[0123] As an example, the second control channel alternative is a control channel alternative other than the M1 control channel alternatives.

[0124] As one example, the second control channel alternative occupies a positive integer number of CCEs.

[0125] As an example, the second control channel alternative occupies a positive integer number of CCEs, and the number of CCEs occupied by the second control channel alternative is exactly the same as the number of CCEs occupied by the first control channel alternative.

[0126] As one example, the second control channel alternative and the first control channel alternative occupy the same set of CCEs.

[0127] As an example, the second control channel alternative and the first control channel alternative occupy the exact same time-frequency domain resources in the time-frequency domain.

[0128] As an example, any CCE occupied by the second control channel alternative is simultaneously occupied by the first control channel alternative, and any CCE occupied by the first control channel alternative is simultaneously occupied by the second control channel alternative.

[0129] As an example, the CCE occupied by the second control channel alternative and the CCE occupied by the first control channel alternative are completely overlapped.

[0130] As one example, the first control channel candidate and the second control channel candidate belong to the same search space set.

[0131] As an example, the first control channel candidate and the second control channel candidate belong to two different search space sets.

[0132] As an example, the control resource set (CORESET, Control Resource Set) corresponding to the search space set to which the first control channel candidate belongs is the same as the control resource set (CORESET, Control Resource Set) corresponding to the search space set to which the second control channel candidate belongs.

[0133] As an example, "the first control channel alternative and the second control channel alternative have the same scrambling code" includes the following meaning: the first scrambling code sequence is the scrambling code sequence of the PDCCH carried by the first control channel alternative, the second scrambling code sequence is the scrambling code sequence of the PDCCH carried by the second control channel alternative, and the first scrambling code sequence and the second scrambling code sequence are the same.

[0134] As an example, "the first control channel alternative and the second control channel alternative have the same scrambling code" includes the following meaning: the first scrambling code sequence is the scrambling code sequence of the PDCCH carried by the first control channel alternative, the second scrambling code sequence is the scrambling code sequence of the PDCCH carried by the second control channel alternative, and the elements in the first scrambling code sequence and the elements in the second scrambling code sequence are identical.

[0135] As an example, "the first control channel alternative and the second control channel alternative have the same scrambling code" includes the following meanings: the first scrambling code sequence is the scrambling code sequence of the PDCCH carried by the first control channel alternative, the second scrambling code sequence is the scrambling code sequence of the PDCCH carried by the second control channel alternative, and the initial value of the generator of the first scrambling code sequence is the same as the initial value of the generator of the second scrambling code sequence.

[0136] As an example, "the first control channel alternative and the second control channel alternative have the same scrambling code" includes the following meaning: the first node device in this application assumes that the first control channel alternative and the second control channel alternative have the same scrambling code.

[0137] As an example, "the first control channel alternative and the second control channel alternative have the same scrambling code" includes the following meanings: the first scrambling code sequence is the scrambling code sequence of the PDCCH carried by the first control channel alternative, the second scrambling code sequence is the scrambling code sequence of the PDCCH carried by the second control channel alternative, and the initial value of the generation register of the first scrambling code sequence is the same as the initial value of the generation register of the second scrambling code sequence.

[0138] As an example, "the first control channel alternative and the second control channel alternative have the same scrambling code" includes the following meanings: the first scrambling code sequence is the scrambling code sequence of the PDCCH carried by the first control channel alternative, the second scrambling code sequence is the scrambling code sequence of the PDCCH carried by the second control channel alternative, and the first scrambling code sequence and the second scrambling code sequence are generated by the same Gold sequence of length 31 using the same generator initial value.

[0139] As one embodiment, "the first control channel candidate and the second control channel candidate have the same scrambling code" includes the following meanings: The first node device in this application assumes that the first bit block, after being scrambled with a first scrambling sequence, is used to generate the physical channel carried by the first control channel candidate; the first node device in this application assumes that the second bit block, after being scrambled with a second scrambling sequence, is used to generate the physical channel carried by the second control channel candidate; the first scrambling sequence and the second scrambling sequence are the same; the first bit block includes a positive integer number of bits greater than 1, and the second bit block includes a positive integer number of bits greater than 1. As a supplementary embodiment of the above embodiment, the first bit block is the output of DCI after channel coding and rate matching, and the second bit block is the output of DCI after channel coding and rate matching. As a supplementary embodiment of the above embodiment, the scrambling of the first bit block with the first scrambling sequence is before modulation, and the scrambling of the second bit block with the first scrambling sequence is before modulation. As an auxiliary embodiment of the above embodiments, the first bit block is sequentially scrambled with the first scrambling sequence, modulated, mapped to physical resources, generated by Orthogonal Frequency Division Multiplexing baseband signal generation, and modulated upconverted to generate the physical channel carried by the first control channel candidate. The second bit block is sequentially scrambled with the second scrambling sequence, modulated, mapped to physical resources, generated by Orthogonal Frequency Division Multiplexing baseband signal generation, and modulated upconverted to generate the physical channel carried by the second control channel candidate.

[0140] As an example, "the size of the DCI format carried by the first control channel alternative and the size of the DCI format carried by the second control channel alternative are the same" includes the following meaning: the first node device in this application assumes that the size of the DCI format carried by the first control channel alternative and the size of the DCI format carried by the second control channel alternative are the same.

[0141] As an example, "the size of the DCI format carried by the first control channel alternative is the same as the size of the DCI format carried by the second control channel alternative" includes the following meaning: the size of the DCI payload carried by the first control channel alternative is the same as the size of the DCI payload carried by the second control channel alternative.

[0142] As an example, "the size of the DCI format carried by the first control channel alternative is the same as the size of the DCI format carried by the second control channel alternative" includes the following meaning: the number of bits included in the DCI format carried by the first control channel alternative is equal to the number of bits included in the DCI format carried by the second control channel alternative.

[0143] As an example, "the size of the DCI format carried by the first control channel alternative is the same as the size of the DCI format carried by the second control channel alternative" includes the following meaning: the number of bits included in the DCI payload carried by the first control channel alternative is equal to the number of bits included in the DCI payload carried by the second control channel alternative.

[0144] As an example, the format of the DCI carried by the first control channel alternative is the same as the format of the DCI carried by the second control channel alternative.

[0145] As an example, the format of the DCI carried by the first control channel alternative is different from the format of the DCI carried by the second control channel alternative.

[0146] As an example, the format of the DCI carried by the first control channel alternative is either 0_2 or 1_2.

[0147] As an example, the format of the DCI carried by the first control channel alternative is one of 0_2, 0_3, 1_2, and 1_3.

[0148] As an example, the format of the DCI carried by the first control channel alternative is one of 0_1, 0_2, 0_3, 1_1, 1_2, and 1_3.

[0149] As an example, the format of the DCI carried by the first control channel alternative is one of 0_1, 0_2, 1_1, and 1_2.

[0150] As an example, the format of the DCI carried by the first control channel alternative is one of all the supported DCI formats.

[0151] As an example, the format of the DCI carried by the first control channel alternative is one of the DCI formats supported by the UE-Specific Search Set (USS set).

[0152] As an example, the format of the DCI carried by the second control channel alternative is either 0_2 or 1_2.

[0153] As an example, the format of the DCI carried by the second control channel alternative is one of 0_2, 0_3, 1_2, and 1_3.

[0154] As an example, the format of the DCI carried by the second control channel alternative is one of 0_1, 0_2, 0_3, 1_1, 1_2, and 1_3.

[0155] As an example, the format of the DCI carried by the second control channel alternative is one of 0_1, 0_2, 1_1, and 1_2.

[0156] As an example, the format of the DCI carried by the second control channel alternative is one of the DCI formats supported by the UE-Specific Search Set (USS set).

[0157] As an example, the index of the first control channel candidate is the index of the first control channel candidate in the search space set to which it belongs.

[0158] As an example, the index of the first control channel candidate is the index of the search space set to which the first control channel candidate belongs.

[0159] As one embodiment, the first control channel candidate belongs to a first search space set, which includes R1 control channel candidates in a first time window. The R1 control channel candidates are indexed sequentially, and the first control channel candidate is one of the R1 control channel candidates. The index of the first control channel candidate is its index within the R1 control channel candidates, where R1 is a positive integer greater than 1. The first time window includes a positive integer number of time-domain symbols. As a supplementary embodiment of the above embodiments, the first time window is a slot. As a supplementary embodiment of the above embodiments, the first time window is a span. As a supplementary embodiment of the above embodiments, the first time window is a monitoring opportunity (MO). As a supplementary embodiment of the above embodiments, R1 is equal to a configurable positive integer, or R1 is equal to a predefined positive integer. As a supplementary embodiment of the above embodiments, the first information block in this application is used to indicate R1.

[0160] As an example, the index of the first control channel candidate is the index of the starting CCE occupied by the first control channel candidate.

[0161] As an example, the index of the first control channel candidate is the index of the starting REG included in the starting CCE occupied by the first control channel candidate.

[0162] As an example, the index of the first control channel candidate is the index of the end CCE occupied by the first control channel candidate.

[0163] As an example, the index of the first control channel candidate is the index of the control resource set (CORESET) to which the CCE occupied by the first control channel candidate belongs.

[0164] As one embodiment, the index of the second control channel candidate is the index of the second control channel candidate in the search space set to which it belongs.

[0165] As one embodiment, the index of the second control channel candidate is the index of the search space set to which the second control channel candidate belongs.

[0166] As one embodiment, the second control channel candidate belongs to a second search space set, which includes R2 control channel candidates in a second time window. These R2 candidates are indexed sequentially, and the second control channel candidate is one of them. The index of the second control channel candidate is its index within the R2 candidates, where R2 is a positive integer greater than 1. The second time window includes a positive integer number of time-domain symbols. As a supplementary embodiment of the above embodiments, the second time window is a slot. As a supplementary embodiment of the above embodiments, the second time window is a span. As a supplementary embodiment of the above embodiments, the second time window is a monitoring opportunity (MO). As a supplementary embodiment of the above embodiments, R2 is equal to a configurable positive integer, or R2 is equal to a predefined positive integer. As a supplementary embodiment of the above embodiments, the first information block in this application is used to indicate R2.

[0167] As an example, the index of the second control channel candidate is the index of the starting CCE occupied by the second control channel candidate.

[0168] As an example, the index of the second control channel candidate is the index of the starting REG included in the starting CCE occupied by the second control channel candidate.

[0169] As an example, the index of the second control channel candidate is the index of the end CCE occupied by the second control channel candidate.

[0170] As an example, the index of the second control channel candidate is the index of the control resource set (CORESET) to which the CCE occupied by the first control channel candidate belongs.

[0171] As one example, the index of the first control channel candidate is greater than the index of the second control channel candidate.

[0172] As an example, the index of the first control channel candidate is smaller than the index of the second control channel candidate.

[0173] As an example, the index of the first control channel candidate is greater than 0.

[0174] As an example, the index of the first control channel candidate can be equal to 0.

[0175] As an example, the index of the first control channel candidate is a non-negative integer.

[0176] As an example, the index of the second control channel candidate is a non-negative integer.

[0177] As an example, the index of the first control channel candidate is an integer.

[0178] As one example, the index of the second control channel candidate is an integer.

[0179] As an example, "the association status of the second control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count" includes the following meaning: the association status of the second control channel candidate is used by the first node device in this application to determine whether the second control channel candidate is included in the monitoring count.

[0180] As an example, "the association status of the second control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count" includes the following meaning: the association status of the second control channel candidate is used by the second node device in this application to determine whether the second control channel candidate is included in the monitoring count.

[0181] As an example, the association status of the second control channel candidate includes whether the second control channel candidate is associated with a control channel candidate, the control channel candidate associated with the second control channel candidate, and the association type of the second control channel candidate.

[0182] As an example, the association status of the second control channel candidate only includes whether the second control channel candidate is associated with a control channel candidate.

[0183] As an example, the associated status of the second control channel candidate only includes the control channel candidate associated with the second control channel candidate.

[0184] As an example, the association status of the second control channel candidate only includes the association type of the second control channel candidate.

[0185] As an example, the association status of the second control channel candidate only includes whether the second control channel candidate is associated with a control channel candidate and the control channel candidate associated with the second control channel candidate.

[0186] As an example, the association status of the second control channel candidate only includes whether the second control channel candidate is associated with a control channel candidate and the association type of the second control channel candidate.

[0187] As an example, the association status of the second control channel candidate only includes the control channel candidate associated with the second control channel candidate and the association type of the second control channel candidate.

[0188] As an example, "whether the second control channel alternative is associated with a control channel alternative" includes the following meaning: whether the second control channel alternative is associated with a control channel alternative other than the second control channel alternative.

[0189] As an example, "whether the second control channel alternative is associated with a control channel alternative" includes the following meaning: the first node device in this application assumes whether the second control channel alternative is associated with a control channel alternative other than the second control channel alternative.

[0190] As an example, "whether the second control channel candidate is associated with a control channel candidate" includes the following meaning: whether the second control channel candidate is associated with a control channel candidate whose index is not equal to the index of the second control channel candidate.

[0191] As an example, "whether the second control channel alternative is associated with a control channel alternative" includes the following meaning: whether the first node device in this application can assume that the DCI payload carried by the first control channel alternative is the same as the DCI payload carried by a control channel alternative other than the first control channel alternative.

[0192] As an example, "whether the second control channel alternative is associated with a control channel alternative" includes the following meaning: whether the first node device in this application can assume that the first control channel alternative and a control channel alternative other than the first control channel alternative can be soft-combined.

[0193] As an example, "whether the second control channel alternative is associated with a control channel alternative" includes the following meaning: whether the payload and aggregation level (AL) of the DCI carried by the first control channel alternative are the same as the payload and aggregation level (AL) of the DCI carried by a control channel alternative other than the first control channel alternative.

[0194] As an example, "whether the second control channel alternative is associated with a control channel alternative" refers to whether a third control channel alternative exists. The third control channel alternative is a control channel alternative other than the second control channel alternative; there are overlapping time-domain resources between the time-domain resources indicated by the DCI carried by the second control channel alternative and the time-domain resources indicated by the DCI carried by the third control channel alternative.

[0195] As an example, "whether the second control channel alternative is associated with a control channel alternative" includes the following meaning: whether there are overlapping time-domain resources between the time-domain resources indicated by the DCI carried by the second control channel alternative and the time-domain resources indicated by the DCI carried by a control channel alternative other than the second control channel alternative.

[0196] As an example, "whether the second control channel alternative is associated with a control channel alternative" includes the following meaning: whether the DCI carried by the second control channel alternative and the DCI carried by a control channel alternative other than the second control channel alternative are used to schedule the same signal or channel.

[0197] As an example, "whether the second control channel alternative is associated with a control channel alternative" includes the following meaning: whether the DCI carried by the second control channel alternative is used to schedule the same PDSCH (Physical Downlink Shared Channel) or the same PUSCH (Physical Uplink Shared Channel) as the DCI carried by a control channel alternative other than the second control channel alternative.

[0198] As an example, "whether the second control channel alternative is associated with a control channel alternative" includes the following meaning: whether the DCI carried by the second control channel alternative and the DCI carried by a control channel alternative other than the second control channel alternative are used to trigger the same reference signal (RS).

[0199] As an example, "whether the second control channel alternative is associated with a control channel alternative" includes the following meaning: whether the DCI carried by the second control channel alternative and the DCI carried by a control channel alternative other than the second control channel alternative are used to schedule the same transport block (TB).

[0200] As an example, "whether the second control channel alternative is associated with a control channel alternative" includes the following meaning: whether the DCI carried by the second control channel alternative and the DCI carried by a control channel alternative other than the second control channel alternative are two repeated transmissions of the same DCI.

[0201] As an example, "whether the second control channel alternative is associated with a control channel alternative" includes the following meaning: whether the DCI carried by the second control channel alternative and the DCI carried by a control channel alternative other than the second control channel alternative are two independent transmissions of scheduling information of the same transport block (TB).

[0202] As an example, "whether the second control channel alternative is associated with a control channel alternative" includes the following meaning: whether the DCI carried by the second control channel alternative and the DCI carried by a control channel alternative other than the second control channel alternative are two of the multiple-chance transmissions of the same transport block (TB) scheduling information.

[0203] As an example, "whether the second control channel candidate is associated with a control channel candidate" includes the following meaning: whether the index of the second control channel candidate is associated (linked or associated) with the index of a control channel candidate other than the second control channel candidate.

[0204] As an example, "whether the second control channel candidate is associated with a control channel candidate" includes the following meaning: whether there is a mapping relationship between the index of the second control channel candidate and the index of a control channel candidate other than the second control channel candidate.

[0205] As an example, "whether the second control channel candidate is associated with a control channel candidate" includes the following meaning: whether there is a functional relationship between the index of the second control channel candidate and the index of a control channel candidate other than the second control channel candidate.

[0206] As an example, "whether the second control channel alternative is associated with a control channel alternative" includes the following meaning: whether the CCE occupied by the second control channel alternative is associated with (linked or associated with) the CCE occupied by a control channel alternative other than the second control channel alternative.

[0207] As an example, the first information block in this application is used to indicate whether the second control channel alternative is associated with a control channel alternative.

[0208] As an example, the first transceiver receives a third information block, which indicates whether the second control channel alternative is associated with a control channel alternative.

[0209] As an example, the association type of the second control channel candidate refers to the association type between the second control channel candidate and the control channel candidate associated with the second control channel candidate.

[0210] As an example, the association type of the second control channel candidate includes the combining method between the second control channel candidate and the control channel candidate associated with the second control channel candidate.

[0211] As an example, the association type of the second control channel alternative includes whether the combining between the PDCCH transmitted by the second control channel alternative and the PDCCH transmitted by the control channel alternative associated with the second control channel alternative supports soft combining.

[0212] As an example, the association type of the second control channel candidate is one of a first association type and a second association type. The first association type includes associations between control channel candidates that support soft combining, and the second association type includes associations between control channel candidates that do not support soft combining.

[0213] As an example, the association type of the second control channel candidate is one of a first association type and a second association type. The first association type includes associations between control channel candidates that support soft combining, and the second association type includes associations between control channel candidates that support multi-chance DCI transmission.

[0214] As an example, the alternative association type for the second control channel is one of a first association type and a second association type. The first association type includes repetition of DCI, and the second association type includes two independent transmissions of two DCIs.

[0215] As an example, the second control channel candidate association type is one of a first association type and a second association type. The first association type includes two repetitions that can be assumed to carry the same DCI, and the second association type includes two repetitions that cannot be assumed to carry the same DCI.

[0216] As an example, "the association status of the second control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count" includes the following meanings: when the second control channel candidate is associated with a control channel candidate other than the second control channel candidate, the second control channel candidate is included in the monitoring count; when the second control channel candidate is not associated with any control channel candidate other than the second control channel candidate, the second control channel candidate is not included in the monitoring count.

[0217] As one embodiment, "the association status of the second control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count" includes the following meanings: when the association type of the second control channel candidate is a first association type, the second control channel candidate is included in the monitoring count; when the association type of the second control channel candidate is a second association type, the second control channel candidate is not included in the monitoring count; the first association type and the second association type are different. As a supplementary embodiment of the above embodiment, the first association type includes two repetitions that can be assumed to carry the same DCI, and the second association type includes two repetitions that cannot be assumed to carry the same DCI. As a supplementary embodiment of the above embodiment, the first association type includes repetitions of DCI, and the second association type includes two independent transmissions of two DCIs. As a supplementary embodiment of the above embodiment, the first association type includes associations between control channel candidates supporting soft combining, and the second association type includes associations between control channel candidates for multi-chance DCI transmission. As a supplementary embodiment of the above embodiments, the first association type includes associations between control channel candidates that support soft combining, and the second association type includes associations between control channel candidates that do not support soft combining. As a supplementary embodiment of the above embodiments, the first association type and the second association type are configurable or predefined.

[0218] As an example, "the association status of the second control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count" includes the following meaning: whether the control channel candidate associated with the second control channel candidate includes the first control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count.

[0219] As an example, "the association status of the second control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count" includes the following meanings: when the control channel candidate associated with the second control channel candidate includes the first control channel candidate, the second control channel candidate is not included in the monitoring count; when the control channel candidate associated with the second control channel candidate only includes control channel candidates other than the first control channel candidate, the second control channel candidate is included in the monitoring count.

[0220] As an example, "the association status of the second control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count" includes the following meaning: whether the control channel candidate associated with the second control channel candidate includes the control channel candidate associated with the first control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count.

[0221] As one embodiment, "the association status of the second control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count" includes the following meanings: when the second control channel candidate is not associated with any control channel candidate other than the second control channel candidate, the second control channel candidate is not included in the monitoring count; when the second control channel candidate is associated with a control channel candidate other than the second control channel candidate, and when the association type of the second control channel candidate is a first association type, the second control channel candidate is included in the monitoring count; when the second control channel candidate is associated with a control channel candidate other than the second control channel candidate, and when the association type of the second control channel candidate is a second association type, the second control channel candidate is not included in the monitoring count. As a supplementary embodiment of the above embodiment, the first association type and the second association type are different. As a supplementary embodiment of the above embodiment, the first association type includes two repetitions that can be assumed to carry the same DCI, and the second association type includes two repetitions that cannot be assumed to carry the same DCI. As a supplementary embodiment of the above embodiments, the first association type includes repetition of DCI transmissions, and the second association type includes two independent transmissions of two DCIs. As a supplementary embodiment of the above embodiments, the first association type includes associations between control channel candidates supporting soft combining, and the second association type includes associations between control channel candidates for multi-chance DCI transmissions. As a supplementary embodiment of the above embodiments, the first association type includes associations between control channel candidates supporting soft combining, and the second association type includes associations between control channel candidates that do not support soft combining. As a supplementary embodiment of the above embodiments, the first association type and the second association type are configurable or predefined.

[0222] As an example, "the association status of the second control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count" includes the following meanings: when the second control channel candidate is not associated with any control channel candidate other than the second control channel candidate, the second control channel candidate is not included in the monitoring count; when the second control channel candidate is associated with a control channel candidate other than the second control channel candidate, and when the control channel candidate associated with the second control channel candidate includes the first control channel candidate, the second control channel candidate is not included in the monitoring count; when the second control channel candidate is associated with a control channel candidate other than the second control channel candidate, and when the control channel candidate associated with the second control channel candidate does not include the first control channel candidate, the second control channel candidate is included in the monitoring count.

[0223] As an example, "the association status of the second control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count" includes the following meanings: when the second control channel candidate is not associated with any control channel candidate other than the second control channel candidate, the second control channel candidate is not included in the monitoring count; when the second control channel candidate is associated with a control channel candidate other than the second control channel candidate, and when the control channel candidate associated with the second control channel candidate includes the first control channel candidate or the control channel candidate associated with the first control channel candidate, the second control channel candidate is not included in the monitoring count; when the second control channel candidate is associated with a control channel candidate other than the second control channel candidate, and when the control channel candidate associated with the second control channel candidate does not include the first control channel candidate or the control channel candidate associated with the first control channel candidate, the second control channel candidate is included in the monitoring count.

[0224] As an example, "the association status of the second control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count" includes the following meanings: when the second control channel candidate is not associated with any control channel candidate other than the second control channel candidate, the second control channel candidate is not included in the monitoring count; when the second control channel candidate is associated with a control channel candidate other than the second control channel candidate, and when the control channel candidate associated with the second control channel candidate includes the first control channel candidate, the second control channel candidate is not included in the monitoring count; when the second control channel candidate and the second control channel candidate are associated with ... When a control channel alternative other than the second control channel alternative is associated with another control channel alternative, and when the control channel alternative associated with the second control channel alternative does not include the first control channel alternative, and when the association type of the second control channel alternative is the first association type, the second control channel alternative is counted in the monitoring count. When the second control channel alternative is associated with another control channel alternative, and when the control channel alternative associated with the second control channel alternative does not include the first control channel alternative, and when the association type of the second control channel alternative is the second association type, the second control channel alternative is not counted in the monitoring count. As a supplementary embodiment of the above embodiments, the first association type and the second association type are different. As a supplementary embodiment of the above embodiments, the first association type includes two repetitions that can be assumed to carry the same DCI, and the second association type includes two repetitions that cannot be assumed to carry the same DCI. As a supplementary embodiment of the above embodiments, the first association type includes repetitions of DCI, and the second association type includes two independent transmissions of two DCIs. As a supplementary embodiment of the above embodiments, the first association type includes associations between control channel candidates that support soft combining, and the second association type includes associations between control channel candidates for multi-chance DCI transmission. As a supplementary embodiment of the above embodiments, the first association type includes associations between control channel candidates that support soft combining, and the second association type includes associations between control channel candidates that do not support soft combining. As a supplementary embodiment of the above embodiments, the first association type and the second association type are configurable or predefined.

[0225] As an example, "whether the second control channel alternative is counted in the number of monitoring" includes the following meaning: whether the second control channel alternative is counted as at least one PDCCH monitoring.

[0226] As an example, "whether the second control channel candidate is included in the number of monitoring times" includes the following meaning: whether the second control channel candidate is counted as at least one PDCCH blind detection (BD).

[0227] As an example, "whether the second control channel candidate is included in the number of monitoring attempts" includes the following meaning: whether the second control channel candidate is at least counted as a monitored PDCCH candidate.

[0228] As an example, "whether the second control channel candidate is included in the monitoring count" includes the following meaning: whether the second control channel candidate affects the statistics of the PDCCH candidate monitoring count.

[0229] As an example, "whether the second control channel candidate is included in the monitoring count" includes the following meaning: whether the second control channel candidate affects the budget for the number of PDCCH candidate monitoring counts.

[0230] As an example, the first node device in this application does not expect the control channel alternative associated with the second control channel alternative to include the first control channel alternative.

[0231] As an example, the first node device in this application does not expect the control channel alternative associated with the second control channel alternative to include the control channel alternative associated with the first control channel alternative.

[0232] As an example, the first node device in this application does not expect the control channel alternative associated with the second control channel alternative to include the first control channel alternative or the control channel alternative associated with the first control channel alternative.

[0233] As an example, the control channel alternative associated with the first control channel alternative is used to determine whether the second control channel alternative is included in the monitoring count.

[0234] As an example, the association type of the first control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count.

[0235] As an example, the control channel alternative associated with the second control channel alternative includes the third control channel alternative described in this application.

[0236] Example 2

[0237] Example 2 illustrates a schematic diagram of a network architecture according to this application, as shown in the attached diagram. Figure 2 As shown. (Attached) Figure 2This diagram illustrates the network architecture 200 of 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) systems. The 5G NR or LTE network architecture 200 can be referred to as 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable term. 5GS / EPS 200 may include one or more UE (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet services 230. 5GS / EPS can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown in the figure, 5GS / EPS provides packet-switched services; however, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. NG-RAN includes NR / Evolved Node B (gNB / eNB) 203 and other gNBs (eNBs) 204. gNBs (eNBs) 203 provide user and control plane protocol termination to UE 201. gNBs (eNBs) 203 can connect to other gNBs (eNBs) 204 via Xn / X2 interfaces (e.g., backhaul). gNBs (eNBs) 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Services Set (BSS), Extended Services Set (ESS), TRP (Transmitter Receiver Node), or some other suitable terminology. gNBs (eNBs) 203 provide UE 201 with an access point to the 5GC / EPC 210. Examples of UE201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband IoT devices, machine-type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional devices.Those skilled in the art may also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. gNB (eNB)203 connects to 5GC / EPC210 via the S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF 214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF 213. The MME / AMF / SMF211 is the control node that handles signaling between UE201 and 5GC / EPC210. ​​Essentially, the MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW / UPF212, which is itself connected to the P-GW / UPF213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF213 is connected to Internet service 230. Internet service 230 includes operator-compliant Internet Protocol services, specifically including the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0238] As an example, the UE201 corresponds to the first node device in this application.

[0239] As an example, the UE201 supports multiple TRP transmissions.

[0240] As an example, the UE201 supports the transmission of PDCCH with multiple TPRs.

[0241] As an example, the gNB(eNB)201 corresponds to the second node device in this application.

[0242] As an example, the gNB (eNB) 201 supports multiple TRP transmissions.

[0243] As an example, the gNB (eNB) 201 supports the transmission of PDCCH for multiple TRPs.

[0244] Example 3

[0245] Example 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for a user plane and a control plane according to this application, as shown in the attached diagram. Figure 3 As shown. Figure 3 This is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300. Figure 3The radio protocol architecture for the control plane 300 between the first node device (UE or gNB) and the second node device (gNB or UE) is illustrated using three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (Physical Layer) signal processing functions. L1 layer will be referred to herein as PHY301. Layer 2 (L2 layer) 305 sits above PHY301 and is responsible for the link between the first and second node devices via PHY301. L2 layer 305 includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security through encrypted data packets and supports cross-regional mobility between the second node devices and the first node device. RLC sublayer 303 provides upper-layer packet segmentation and reassembly, retransmission of lost packets, and packet reordering to compensate for out-of-order reception due to HARQ. MAC sublayer 302 provides multiplexing between the logical and transport channels. MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell among first-node devices. MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3) of the control plane 300 is responsible for acquiring radio resources (i.e., radio bearers) and configuring the lower layer using RRC signaling between the second-node devices and the first-node devices. The radio protocol architecture of user plane 350 includes Layer 1 (L1 layer) and Layer 2 (L2 layer). The radio protocol architecture for the first and second node devices in user plane 350 is largely the same as the corresponding layers and sublayers in control plane 300 for Physical Layer 351, PDCP sublayer 354 in L2 layer 355, RLC sublayer 353 in L2 layer 355, and MAC sublayer 352 in L2 layer 355. However, PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. L2 layer 355 in user plane 350 also includes SDAP (Service Data Adaptation Protocol) sublayer 356. SDAP sublayer 356 is responsible for mapping between QoS flows and Data Radio Bearers (DRBs) to support service diversity.Although not illustrated, the first node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., remote UE, server, etc.).

[0246] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the first node device in this application.

[0247] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the second node device in this application.

[0248] As an example, the first information block in this application is generated in RRC306, or MAC302, or MAC352, or PHY301, or PHY351.

[0249] As an example, the second information block in this application is generated in RRC306, or MAC302, or MAC352, or PHY301, or PHY351.

[0250] As an example, the first control channel candidate in this application is generated in PHY301 or PHY351.

[0251] Example 4

[0252] Example 4 illustrates a schematic diagram of a first node device and a second node device according to this application, as shown in the attached diagram. Figure 4 As shown.

[0253] The first node device (450) may include a controller / processor 490, a data source / buffer 480, a receiver processor 452, a transmitter / receiver 456 and a transmitter processor 455, wherein the transmitter / receiver 456 includes an antenna 460.

[0254] The second node device (410) may include a controller / processor 440, a data source / buffer 430, a receiver processor 412, a transmitter / receiver 416 and a transmitter processor 415, wherein the transmitter / receiver 416 includes an antenna 420.

[0255] In the downlink (DL), upper-layer packets, such as the higher-layer information included in the first information block of this application, are provided to the controller / processor 440. The controller / processor 440 implements L2 and higher-layer functions. In the DL, the controller / processor 440 provides header compression, encryption, packet segmentation and reordering, multiplexing between the logical and transport channels, and radio resource allocation to the first node device 450 based on various priority metrics. The controller / processor 440 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the first node device 450, such as the higher-layer information included in the first information block of this application, all generated in the controller / processor 440. The transmitter processor 415 implements various signal processing functions for the L1 layer (i.e., the physical layer), including encoding, interleaving, scrambling, modulation, power control / allocation, precoding, and physical layer control signaling generation. For example, the generation of the physical layer signal for the first information block in this application is completed in the transmitter processor 415. When the first control channel alternative in this application is used to transmit control signaling, the generation of the transmitted control signaling is completed in the transmitter processor 415. The generated modulation symbols are divided into parallel streams, and each stream is mapped to a corresponding multi-carrier subcarrier and / or multi-carrier symbol. Then, the transmitter processor 415 maps the mapping to the antenna 420 via the transmitter 416 and transmits it as a radio frequency signal. At the receiving end, each receiver 456 receives the radio frequency signal through its corresponding antenna 460. Each receiver 456 recovers the baseband information modulated onto the radio frequency carrier and provides the baseband information to the receiver processor 452. The receiver processor 452 implements various signal reception processing functions for the L1 layer. The signal reception and processing function includes receiving the physical layer signal of the first information block in this application and monitoring the first control channel alternative in this application. It demodulates the multi-carrier symbols in the multi-carrier symbol stream using various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK)), followed by descrambling, decoding, and deinterleaving to recover the data or control transmitted by the second node device 410 on the physical channel. The data and control signals are then provided to the controller / processor 490. The controller / processor 490 is responsible for the L2 layer and above, and it interprets the first information block in this application. The controller / processor may be associated with a memory 480 that stores program code and data. The memory 480 may be referred to as computer-readable media.

[0256] In uplink (UL) transmission, similar to downlink transmission, after the second information block in this application is generated by the controller / processor 490, it undergoes various signal transmission processing functions for the L1 layer (i.e., physical layer) by the transmitter processor 455. The physical layer signal carrying the second information block is generated by the transmitter processor 455 and then transmitted by the transmitter processor 455 via the transmitter 456 to the antenna 460 as a radio frequency signal. The receiver 416 receives the radio frequency signal through its corresponding antenna 420. Each receiver 416 recovers the baseband information modulated onto the radio frequency carrier and provides the baseband information to the receiver processor 412. The receiver processor 412 implements various signal reception processing functions for the L1 layer (i.e., physical layer), including receiving and processing the physical layer signal carrying the second information block in this application, and then providing data and / or control signals to the controller / processor 440. The controller / processor 440 implements L2 layer functions, including reading the second information block in this application. The controller / processor may be associated with a buffer 430 that stores program code and data. The buffer 430 can be computer-readable media.

[0257] As one embodiment, the first node device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, and the first node device 450 at least: receives a first information block, the first information block being used to determine M1 control channel candidates, any one of the M1 control channel candidates occupying a positive integer number of CCEs, where M1 is a positive integer greater than 1; monitors a first control channel candidate, the first control channel candidate being one of the M1 control channel candidates; wherein a second control channel candidate is the same as the first control channel candidate. The control channel candidates occupy the same CCE; the first control channel candidate and the second control channel candidate have the same scrambling code, and the size of the DCI format carried by the first control channel candidate and the size of the DCI format carried by the second control channel candidate are the same; the index of the first control channel candidate and the index of the second control channel candidate are not equal; the association status of the second control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count, and the association status of the second control channel candidate includes at least one of the following: whether the second control channel candidate is associated with a control channel candidate, the control channel candidate associated with the second control channel candidate, and the association type of the second control channel candidate.

[0258] As one embodiment, the first node device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating actions when executed by at least one processor, the actions including: receiving a first information block, the first information block being used to determine M1 control channel candidates, any one of the M1 control channel candidates occupying a positive integer number of CCEs, where M1 is a positive integer greater than 1; monitoring a first control channel candidate, the first control channel candidate being one of the M1 control channel candidates; wherein a second control channel candidate is a control channel candidate occupying the same number of CCEs as the first control channel candidate; the first... The first control channel candidate and the second control channel candidate have the same scrambling code. The size of the DCI format carried by the first control channel candidate is the same as that of the second control channel candidate. The indexes of the first control channel candidate and the second control channel candidate are not equal. The association status of the second control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count. The association status of the second control channel candidate includes at least one of the following: whether the second control channel candidate is associated with a control channel candidate, the control channel candidate associated with the second control channel candidate, and the association type of the second control channel candidate.

[0259] As one embodiment, the second node device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second node device 410 at least: transmits a first information block, the first information block being used to indicate M1 control channel candidates, any one of the M1 control channel candidates occupying a positive integer number of CCEs, where M1 is a positive integer greater than 1; determines a first control channel candidate, the first control channel candidate being one of the M1 control channel candidates; wherein, a second control channel candidate is a control channel candidate occupying the same number of CCEs as the first control channel candidate; the first control channel candidate and the second control channel candidate have the same scrambling code, the size of the DCI format carried by the first control channel candidate is the same as the size of the DCI format carried by the second control channel candidate; the index of the first control channel candidate and the index of the second control channel candidate are not equal; the association status of the second control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count, the association status of the second control channel candidate includes at least one of whether the second control channel candidate is associated with a control channel candidate, the control channel candidate associated with the second control channel candidate, and the association type of the second control channel candidate.

[0260] As one embodiment, the second node device 410 includes: a memory storing a computer-readable instruction program, which generates actions when executed by at least one processor, the actions including: sending a first information block, the first information block being used to indicate M1 control channel candidates, any one of the M1 control channel candidates occupying a positive integer number of CCEs, where M1 is a positive integer greater than 1; determining a first control channel candidate, the first control channel candidate being one of the M1 control channel candidates; wherein a second control channel candidate is a control channel candidate occupying the same number of CCEs as the first control channel candidate; the first... The control channel candidate and the second control channel candidate have the same scrambling code. The size of the DCI format carried by the first control channel candidate is the same as the size of the DCI format carried by the second control channel candidate. The index of the first control channel candidate and the index of the second control channel candidate are not equal. The association status of the second control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count. The association status of the second control channel candidate includes at least one of the following: whether the second control channel candidate is associated with a control channel candidate, the control channel candidate associated with the second control channel candidate, and the association type of the second control channel candidate.

[0261] As an example, the first node device 450 is a user equipment (UE).

[0262] As an example, the first node device 450 is a user equipment that supports multiple TRP transmissions.

[0263] As an example, the first node device 450 is a user equipment that supports multiple TRP PDCCH transmissions.

[0264] As one embodiment, the second node device 410 is a base station device (gNB / eNB).

[0265] As an example, the second node device 410 is a base station device that supports multiple TRP transmissions.

[0266] As an example, the second node device 410 is a base station device that supports multiple TRP PDCCH transmissions.

[0267] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used in this application to receive the first information block.

[0268] As one embodiment, receiver 456 (including antenna 460) and receiver processor 452 are used in this application to monitor the first control channel alternative.

[0269] As one embodiment, a transmitter 456 (including an antenna 460), a transmitter processor 455, and a controller / processor 490 are used in this application to transmit the second information block.

[0270] As one embodiment, transmitter 416 (including antenna 420), transmitter processor 415 and controller / processor 440 are used to transmit the first information block in this application.

[0271] As one embodiment, transmitter 416 (including antenna 420) and transmitter processor 415 are used to determine the first control channel candidate in this application.

[0272] As one embodiment, receiver 416 (including antenna 420), receiver processor 412 and controller / processor 440 are used to receive the second information block in this application.

[0273] Example 5

[0274] Example 5 illustrates a wireless signal transmission flowchart according to an embodiment of this application, as shown in the attached diagram. Figure 5 As shown. In the appendix Figure 5 In this example, the second node device N500 is the base station maintaining the serving cell of the first node device U550. It should be noted that the order in this example does not limit the signal transmission order or the order of implementation in this application.

[0275] for Second node device N500 In step S501, the second information block is received; in step S502, the first information block is sent; and in step S503, the first control channel candidate is determined.

[0276] for First node device U550 In step S551, a second information block is sent; in step S552, a first information block is received; and in step S553, the first control channel alternative is monitored.

[0277] In Embodiment 5, the first information block in this application is used to determine the M1 control channel candidates in this application. Each of the M1 control channel candidates occupies a positive integer number of CCEs, where M1 is a positive integer greater than 1. The first control channel candidate in this application is one of the M1 control channel candidates. The second control channel candidate occupies the same number of CCEs as the first control channel candidate. The first control channel candidate and the second control channel candidate have the same scrambling code. The size of the DCI format carried by the first control channel candidate and the size of the DCI format carried by the second control channel candidate are... The dimensions are the same; the indexes of the first control channel candidate and the second control channel candidate are not equal; the association status of the second control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count, and the association status of the second control channel candidate includes at least one of the following: whether the second control channel candidate is associated with a control channel candidate, the control channel candidate associated with the second control channel candidate, and the association type of the second control channel candidate; the second information block is used to indicate whether the first node device supports association between two control channel candidates and at least one of the following association types between control channel candidates supported by the first node device.

[0278] As one example, the second information block is transmitted via an air interface.

[0279] As one embodiment, the second information block is transmitted via a wireless interface.

[0280] As one embodiment, the second information block includes all or part of the higher-level signaling.

[0281] As one embodiment, the second information block includes all or part of the physical layer signaling.

[0282] As one embodiment, the second information block includes all or part of the RRC (Radio Resource Control) signaling.

[0283] As one embodiment, the second information block includes all or part of the MAC (Medium Access Control) layer signaling.

[0284] As one example, the second information block is transmitted via UL-SCH (Uplink Shared Channel).

[0285] As an example, the second information block is transmitted via PUSCH (Physical Uplink Shared Channel).

[0286] As an example, the second information block is transmitted via PUCCH (Physical Uplink Control Channel).

[0287] As one embodiment, the second information block includes UCI (Uplink Control Information).

[0288] As one embodiment, the second information block is used to indicate the capabilities of the first node device in this application.

[0289] As an example, the second information block indicates the PDCCH merging and decoding capability of the first node device in this application.

[0290] As an example, the second information block indicates that the first node device in this application supports the capability of multi-chance DCI transmission.

[0291] As an example, the second information block indicates that the first node device in this application supports the ability to associate between two PDCCH candidates.

[0292] As an example, the second information block indicates that the first node device in this application supports the ability of two PDCCH candidates to schedule the same TB.

[0293] As an example, the statement in the claim that "the second information block is used to indicate whether the first node device supports association between two control channel candidates and at least one of the association types between the control channel candidates supported by the first node device" includes the following meaning: the second information block is used to indicate whether the first node device supports association between two control channel candidates, and when the first node device supports association between two control channel candidates, the second information block is used to indicate the association type between the control channel candidates supported by the first node device.

[0294] As one embodiment, "the second information block is used to indicate whether the first node device supports at least one of the association types between two control channel alternatives and between the control channel alternatives supported by the first node device" includes the following meaning: the second information block is only used to indicate whether the first node device supports the association between two control channel alternatives.

[0295] As an example, the statement "the second information block is used to indicate whether the first node device supports at least one of the association types between two control channel alternatives and between the control channel alternatives supported by the first node device" includes the following meaning: the second information block is only used to indicate the association type between the control channel alternatives supported by the first node device.

[0296] As an example, the association types between control channel candidates include the Combining type.

[0297] As an example, the association type between control channel alternatives includes the combining type between the PDCCHs carried by the control channel alternatives.

[0298] As an example, the association type between control channel candidates includes whether soft combining is supported between the control channel candidates.

[0299] As an example, the association type between control channel alternatives includes whether the control channel alternatives are duplicate transmissions of DCI.

[0300] As an example, the association type between control channel candidates includes whether the control channel candidates support soft combining or multi-chance DCI transmission.

[0301] As an example, the association type between control channel candidates includes whether the control channel candidates support multi-chance DCI transmission.

[0302] As an example, "the second information block is used to indicate whether the first node device supports at least one of the association types between two control channel alternatives and between control channel alternatives supported by the first node device" includes the following meaning: the second information block indicates whether the first node device supports soft combining between PDCCHs transmitted by two control channel alternatives.

[0303] As an example, "the second information block is used to indicate whether the first node device supports at least one of the association types between two control channel alternatives and between control channel alternatives supported by the first node device" includes the following meaning: the second information block indicates whether the first node device supports two control channel alternatives carrying the same DCI payload.

[0304] As an example, "the second information block is used to indicate whether the first node device supports at least one of the association types between two control channel alternatives and between the control channel alternatives supported by the first node device" includes the following meaning: the second information block indicates whether the first node device supports two repeated transmissions of two control channel alternatives carrying the same DCI payload.

[0305] As an example, the phrase "the second information block is used to indicate whether the first node device supports at least one of the association types between two control channel candidates and between the control channel candidates supported by the first node device" includes the following meaning: the second information block is used by the first node device in this application to indicate whether the first node device supports at least one of the association types between two control channel candidates and between the control channel candidates supported by the first node device.

[0306] As an example, the phrase "the second information block is used to indicate whether the first node device supports at least one of the association types between two control channel candidates and between the control channel candidates supported by the first node device" includes the following meaning: the second information block is used to explicitly indicate whether the first node device supports at least one of the association types between two control channel candidates and between the control channel candidates supported by the first node device.

[0307] As an example, the phrase "the second information block is used to indicate whether the first node device supports at least one of the association types between two control channel candidates and between the control channel candidates supported by the first node device" includes the following meaning: the second information block is used to implicitly indicate whether the first node device supports at least one of the association types between two control channel candidates and between the control channel candidates supported by the first node device.

[0308] As one example, the second information block includes one or more fields in IE's "Phy-Parameters".

[0309] Example 6

[0310] Example 6 illustrates a schematic diagram of a second control channel alternative quasi-co-addressing according to an embodiment of this application, as shown in the attached diagram. Figure 6 As shown. In the appendix Figure 6 In this process, the second control channel alternative and the control channel alternative associated with the second control channel alternative are transmitted from TRP#1 and TRP#2, respectively.

[0311] In Embodiment 6, when the second control channel candidate in this application is associated with a control channel candidate other than the second control channel candidate, the quasi-co-address of the reference signal included in the second control channel candidate is different from the quasi-co-address of the reference signal included in the control channel candidate associated with the second control channel candidate.

[0312] As an example, the reference signal included in the second control channel alternative and the reference signal included in the control channel alternative associated with the second control channel alternative are both PDCCH (Physical Downlink Control Channel) DMRS (Demodulation Reference Signal).

[0313] As an example, the reference signal included in the second control channel alternative and the reference signal included in the control channel alternative associated with the second control channel alternative are both reference signals used for PDCCH (Physical Downlink Control Channel) reception.

[0314] As one embodiment, the reference signal included in the second control channel alternative and the reference signal included in the control channel alternative associated with the second control channel alternative are respectively quasi-co-located (QCL) with different reference signals.

[0315] As one embodiment, the reference signal included in the second control channel alternative and the reference signal included in the control channel alternative associated with the second control channel alternative are respectively quasi-co-located with different antenna ports (QCL).

[0316] As one embodiment, the reference signal included in the second control channel alternative and the reference signal included in the control channel alternative associated with the second control channel alternative are respectively quasi-co-located (QCL) with reference signals occupying different time-frequency resources.

[0317] As one embodiment, the reference signal included in the second control channel alternative and the reference signal included in the control channel alternative associated with the second control channel alternative are respectively quasi-co-located (QCL) with reference signals occupying different time-domain resources.

[0318] As an example, the reference signal included in the second control channel alternative and the reference signal included in the control channel alternative associated with the second control channel alternative are respectively quasi-co-located (QCL) with a synchronization index of SS / PBCH (Synchronization Signal / Physical Broadcast Channel) block.

[0319] As an example, the reference signal included in the second control channel alternative and the reference signal included in the control channel alternative associated with the second control channel alternative are respectively quasi-co-located (QCL) with CSI-RS (Channel Status Information Reference Signal) of different antenna ports.

[0320] As an example, the reference signal included in the second control channel alternative and the reference signal included in the control channel alternative associated with the second control channel alternative are respectively quasi-co-located (QCL) with CSI-RS (Channel Status Information Reference Signal) occupying different time and frequency resources.

[0321] As an example, the first node device in this application assumes that the quasi-co-address of the reference signals included in the second control channel alternative is different from the quasi-co-address of the reference signals included in the control channel alternative associated with the second control channel alternative.

[0322] As an example, the first node device in this application cannot assume that the quasi-co-address of the reference signals included in the second control channel alternative is the same as the quasi-co-address of the reference signals included in the control channel alternative associated with the second control channel alternative.

[0323] As an example, the TCI (Transmission Configuration Indication) state of the reference signal included in the second control channel candidate is different from the TCI (Transmission Configuration Indication) state of the reference signal included in the control channel candidate associated with the second control channel candidate.

[0324] As an example, the first node device in this application assumes that the TCI (Transmission Configuration Indication) state of the reference signal included in the second control channel candidate is different from the TCI (Transmission Configuration Indication) state of the reference signal included in the control channel candidate associated with the second control channel candidate.

[0325] As an example, the first node device in this application cannot assume that the TCI (Transmission Configuration Indication) state of the reference signal included in the second control channel alternative is the same as the TCI (Transmission Configuration Indication) state of the reference signal included in the control channel alternative associated with the second control channel alternative.

[0326] As one embodiment, the antenna port quasi-co-location of the reference signal included in the second control channel alternative is different from the antenna port quasi-co-location of the reference signal included in the control channel alternative associated with the second control channel alternative.

[0327] As an example, the quasi-co-location type (QCL type) of the reference signals included in the second control channel alternative is different from the quasi-co-location type (QCL type) of the reference signals included in the control channel alternative associated with the second control channel alternative.

[0328] As an example, the quasi-co-address type (QCLtype) of the reference signals included in the second control channel alternative is the same as the quasi-co-address type (QCL type) of the reference signals included in the control channel alternative associated with the second control channel alternative.

[0329] As one embodiment, the first transceiver receives a fourth information block, wherein the fourth information block is used to determine a target standard co-address set, the target standard co-address set including a positive integer number of antenna port quasi-co-addresses greater than 1, the quasi-co-address of the reference signal included in the second control channel candidate is an antenna port quasi-co-address included in the target standard co-address set, and the quasi-co-address of the reference signal included in the control channel candidate associated with the second control channel candidate is an antenna port quasi-co-address included in the target standard co-address set.

[0330] As one example, the first control channel alternative is associated with a control channel alternative other than the first control channel alternative.

[0331] As an example, the first control channel candidate is associated with another control channel candidate, and the quasi-co-address of the reference signals included in the first control channel candidate is different from the quasi-co-address of the reference signals included in the control channel candidate associated with the first control channel candidate.

[0332] Example 7

[0333] Example 7 illustrates a schematic diagram of the relationship between a first control channel alternative and a second control channel alternative according to an embodiment of this application, as shown in the attached diagram. Figure 7 As shown. In the appendix Figure 7 In the diagram, the horizontal axis represents time, the horizontal axis represents frequency, the rectangle filled with dots represents the first control channel candidate, the rectangle filled with cross lines represents the second control channel candidate, and the rectangle filled with diagonal lines represents the control channel candidate associated with the second control channel candidate. The value of the carrier indication field (CIF) in both the first and second control channel candidates is equal to a, where a is a non-negative integer.

[0334] In Embodiment 7, the index of the control resource set of the search space set to which the first control channel candidate belongs in this application is the same as the index of the control resource set of the search space set to which the second control channel candidate belongs in this application; the value of the carrier indication field included in the DCI carried by the first control channel candidate is equal to the value of the carrier indication field included in the DCI carried by the second control channel candidate.

[0335] As an example, the control resource set (CORESET) of the search space set to which the first control channel candidate belongs is a CORESET to which the CCE occupied by the first control channel candidate belongs.

[0336] As one embodiment, the set of control resources applied to the search space set to which the first control channel candidate belongs is a CORESET associated with the search space set to which the first control channel candidate belongs.

[0337] As an example, the set of control resources applied to the search space set to which the first control channel candidate belongs is a CORESET to which the first control channel candidate belongs.

[0338] As one embodiment, the set of control resources applied to the search space set to which the first control channel candidate belongs is the CORESET to which the CCE belongs in the search space set to which the first control channel candidate belongs.

[0339] As an example, the index of the control resource set applied to the search space set to which the first control channel candidate belongs is a non-negative integer.

[0340] As an example, the index of the control resource set applied to the search space set to which the first control channel candidate belongs is the CORESET ID.

[0341] As an example, the control resource set (CORESET) of the search space set to which the second control channel candidate belongs is a CORESET to which the CCE occupied by the second control channel candidate belongs.

[0342] As one embodiment, the set of control resources applied to the search space set to which the second control channel candidate belongs is a CORESET associated with the search space set to which the second control channel candidate belongs.

[0343] As one embodiment, the set of control resources applied to the search space set to which the second control channel candidate belongs is a CORESET to which the second control channel candidate belongs.

[0344] As one embodiment, the set of control resources applied to the search space set to which the second control channel candidate belongs is the CORESET to which the CCE belongs in the search space set to which the second control channel candidate belongs.

[0345] As one embodiment, the index of the control resource set to which the search space set to which the second control channel candidate belongs is an indices that are non-negative integers.

[0346] As one embodiment, the index of the control resource set applied to the search space set to which the second control channel candidate belongs is the CORESET ID.

[0347] As an example, "the value of the carrier indication field included in the DCI carried by the first control channel alternative and the value of the carrier indication field included in the DCI carried by the second control channel alternative are equal" includes the following meaning: the first node device in this application assumes that the value of the carrier indication field included in the DCI carried by the first control channel alternative and the value of the carrier indication field included in the DCI carried by the second control channel alternative are equal.

[0348] As an example, "the value of the carrier indication field included in the DCI carried by the first control channel candidate is equal to the value of the carrier indication field included in the DCI carried by the second control channel candidate" includes the following meaning: the serving cell index indicated by the carrier indication field included in the DCI carried by the first control channel candidate is equal to the serving cell index indicated by the carrier indication field included in the DCI carried by the second control channel candidate.

[0349] As an example, "the value of the carrier indication field included in the DCI carried by the first control channel alternative is equal to the value of the carrier indication field included in the DCI carried by the second control channel alternative" includes the following meaning: the index of the serving cell indicated by the carrier indication field included in the DCI carried by the first control channel alternative is the same as the serving cell indicated by the carrier indication field included in the DCI carried by the second control channel alternative.

[0350] As an example, "the DCI carried by the first control channel alternative" includes the following meaning: the first node device in this application assumes the DCI carried by the first control channel alternative.

[0351] As an example, "the DCI carried by the first control channel alternative" includes the following meaning: the DCI actually carried by the first control channel alternative.

[0352] As an example, "the DCI carried by the second control channel alternative" includes the following meaning: the first node device in this application assumes that the DCI carried by the second control channel alternative is true.

[0353] As an example, "the DCI carried by the second control channel alternative" includes the following meaning: the DCI actually carried by the second control channel alternative.

[0354] As an example, the value of the Carrier Indicator Field (CIF) included in the DCI carried by the first control channel alternative is equal to the index of a serving cell.

[0355] As an example, the value of the Carrier Indicator Field (CIF) included in the DCI carried by the first control channel alternative is equal to the ID of a serving cell.

[0356] As an example, the value of the Carrier Indicator Field (CIF) included in the DCI carried by the first control channel alternative is equal to the index of a scheduled cell.

[0357] As an example, the value of the Carrier Indicator Field (CIF) included in the DCI carried by the first control channel alternative is equal to the ID of a scheduled cell.

[0358] As an example, the value of the Carrier Indicator Field (CIF) included in the DCI carried by the first control channel alternative is equal to an n. CI .

[0359] As an example, the value of the Carrier Indicator Field (CIF) included in the DCI carried by the second control channel alternative is equal to the index of a serving cell.

[0360] As an example, the value of the Carrier Indicator Field (CIF) included in the DCI carried by the second control channel alternative is equal to the ID of a serving cell.

[0361] As an example, the value of the Carrier Indicator Field (CIF) included in the DCI carried by the second control channel alternative is equal to the index of a scheduled cell.

[0362] As an example, the value of the Carrier Indicator Field (CIF) included in the DCI carried by the second control channel alternative is equal to the ID of a scheduled cell.

[0363] As an example, the value of the Carrier Indicator Field (CIF) included in the DCI carried by the second control channel alternative is equal to an n. CI .

[0364] Example 8

[0365] Example 8 illustrates a schematic diagram of the relationship between the index of the first control channel candidate and the index of the second control channel candidate according to an embodiment of this application, as shown in the attached diagram. Figure 8 As shown. In the appendix Figure 8 In the diagram, in cases A and B, the horizontal axis represents time and the vertical axis represents frequency. In case A, the first control channel candidate and the second control channel candidate belong to the same search space set #i (SS#i). The rectangles filled with cross lines represent the CCEs occupied by the first and second control channel candidates. Each rectangle filled with diagonal lines represents the CCEs occupied by a control channel candidate in search space set #i. The number on the right represents the index of the control channel candidate in search space set #i. The two numbers on the right side of the rectangles filled with cross lines represent the indices of the first and second control channel candidates, respectively. In case B, the first and second control channel candidates belong to different search space sets #i (SS#i) and #(i+1)(SS#(i+1)), respectively. Each rectangle filled with vertical lines represents the CCEs occupied by a control channel candidate in search space set #i. Each rectangle filled with horizontal lines represents the CCEs occupied by a control channel candidate in search space set #(i+1). The rectangles filled with cross lines represent the CCEs occupied by the first and second control channel candidates.

[0366] In Embodiment 8, when the search space set to which the first control channel candidate belongs in this application is the same as the search space set to which the second control channel candidate belongs in this application, the index of the first control channel candidate is the index of the first control channel candidate in its search space set, and the index of the second control channel candidate is the index of the second control channel candidate in its search space set; when the search space set to which the first control channel candidate belongs is different from the search space set to which the second control channel candidate belongs, the index of the first control channel candidate is equal to the index of the search space set to which the first control channel candidate belongs, and the index of the second control channel candidate is equal to the index of the search space set to which the second control channel candidate belongs.

[0367] As an example, "the search space set to which the first control channel candidate belongs is the same as the search space set to which the second control channel candidate belongs" means that the index of the search space set to which the first control channel candidate belongs is equal to the index of the search space set to which the second control channel candidate belongs.

[0368] As an example, "the search space set to which the first control channel candidate belongs is the same as the search space set to which the second control channel candidate belongs" means that the ID of the search space set to which the first control channel candidate belongs is the same as the ID of the search space set to which the second control channel candidate belongs.

[0369] As an example, "the search space set to which the first control channel candidate belongs is different from the search space set to which the second control channel candidate belongs" means that the index of the search space set to which the first control channel candidate belongs is not equal to the index of the search space set to which the second control channel candidate belongs.

[0370] As an example, "the search space set to which the first control channel candidate belongs is different from the search space set to which the second control channel candidate belongs" means that the ID of the search space set to which the first control channel candidate belongs is different from the ID of the search space set to which the second control channel candidate belongs.

[0371] As one embodiment, "the index of the first control channel candidate in its search space set" is the index of the first control channel candidate among the control channel candidates included in its search space set that are used to schedule the same serving cell, and "the index of the second control channel candidate in its search space set" is the index of the second control channel candidate among the control channel candidates included in its search space set that are used to schedule the same serving cell.

[0372] As one embodiment, "the index of the first control channel candidate in its search space set" is the index of the first control channel candidate among the control channel candidates included in its search space set that are used to carry DCI with the same Carrier Indication Field (CIF) value, and "the index of the second control channel candidate in its search space set" is the index of the second control channel candidate among the control channel candidates included in its search space set that are used to carry DCI with the same Carrier Indication Field (CIF) value.

[0373] As an example, the search space set to which the first control channel candidate belongs includes Y1 control channel candidates. "The index of the first control channel candidate in the search space set" is the index of the first control channel candidate among the Y1 control channel candidates, where Y1 is a positive integer greater than 1. "The index of the second control channel candidate in the search space set" is the index of the second control channel candidate among the Y1 control channel candidates.

[0374] As an example, the search space set to which the first control channel candidate belongs includes Y1 control channel candidates. "The index of the first control channel candidate in the search space set" is the index of the first control channel candidate among the Y1 control channel candidates. "The index of the second control channel candidate in the search space set" is the index of the second control channel candidate among the Y1 control channel candidates. Y1 is a positive integer greater than 1. The values ​​of the carrier indication field in the DCI carried by the Y1 control channel candidates are all equal.

[0375] As one embodiment, the search space set to which the first control channel candidate belongs includes Y1 control channel candidates in the first time window. "The index of the first control channel candidate in its search space set" is the index of the first control channel candidate among the Y1 control channel candidates, and "The index of the second control channel candidate in its search space set" is the index of the second control channel candidate among the Y1 control channel candidates, where Y1 is a positive integer greater than 1. As a supplementary embodiment of the above embodiment, the carrier indication field (CIF) values ​​in the DCIs carried by the Y1 control channel candidates are all equal. As a supplementary embodiment of the above embodiment, the DCIs carried by the Y1 control channel candidates are all used to schedule the same serving cell. As a supplementary embodiment of the above embodiment, the DCIs carried by the Y1 control channel candidates are all used to schedule the same carrier. As a supplementary embodiment of the above embodiment, the first time window is the time slot to which the first control channel candidate belongs in the time domain. As an additional embodiment of the above embodiments, the first time window is the span of the first control channel candidate in the time domain. As an additional embodiment of the above embodiments, the first time window is the monitoring opportunity (MO) of the first control channel candidate in the time domain. As an additional embodiment of the above embodiments, the first time window includes a positive integer number of time domain symbols, and the number of symbols included in the first time window is predefined or configurable.

[0376] As an example, the index of the search space set to which the first control channel candidate belongs is a positive integer.

[0377] As an example, the index of the search space set to which the first control channel candidate belongs is a non-negative integer.

[0378] As an example, the index of the search space set to which the first control channel candidate belongs is an integer greater than 0 and less than 40.

[0379] As an example, the index of the search space set to which the first control channel candidate belongs is the ID of the search space set to which the first control channel candidate belongs.

[0380] As an example, the index of the search space set to which the second control channel candidate belongs is a positive integer.

[0381] As an example, the index of the search space set to which the second control channel candidate belongs is a non-negative integer.

[0382] As an example, the index of the search space set to which the second control channel candidate belongs is an integer greater than 0 and less than 40.

[0383] As one embodiment, the index of the search space set to which the second control channel candidate belongs is the ID of the search space set to which the second control channel candidate belongs.

[0384] Example 9

[0385] Example 9 illustrates a schematic diagram of the relationship between a second control channel alternative and a third control channel alternative according to an embodiment of this application, as shown in the attached diagram. Figure 9 As shown. In the appendix Figure 9 In scenarios A and B, the horizontal axis represents time, and the dashed lines with arrows represent the corresponding scheduling relationships. In scenario A, rectangles filled with dots represent the third control channel candidate, rectangles filled with crosshairs represent the second control channel candidate, rectangles filled with crosshairs represent the time-domain resources indicated by the DCI carried by the third control channel candidate, and rectangles filled with diagonal lines represent the time-domain resources indicated by the DCI carried by the second control channel candidate. In scenario B, rectangles filled with dots represent the third control channel candidate, rectangles filled with crosshairs represent the second control channel candidate, and rectangles filled with crosshairs represent the time-domain resources indicated by the DCI carried by the third control channel candidate and the time-domain resources indicated by the DCI carried by the second control channel candidate, with the time-domain resources indicated by the DCI carried by the third control channel candidate and the time-domain resources indicated by the DCI carried by the second control channel candidate completely overlapping.

[0386] In Embodiment 9, the first information block in this application is used to determine that the second control channel candidate and the third control channel candidate in this application are associated, and the first information block is used to determine the association type between the second control channel candidate and the third control channel candidate, wherein the third control channel candidate is a control channel candidate other than the second control channel candidate; there are overlapping time-domain resources between the time-domain resources indicated by the DCI carried by the second control channel candidate and the time-domain resources indicated by the DCI carried by the third control channel candidate.

[0387] As an example, "the first information block is used to determine the association between the second control channel candidate and the third control channel candidate" includes the following meaning: the first information block is used by the first node device in this application to determine the association between the second control channel candidate and the third control channel candidate.

[0388] As an example, "the first information block is used to determine the association between the second control channel alternative and the third control channel alternative" includes the following meaning: the first information block includes a switch (on / off or enable / disable) associated between the control channel alternatives, and the first information block indicates that the association between the second control channel alternative and the third control channel alternative is turned on.

[0389] As an example, "the first information block is used to determine the association between the second control channel candidate and the third control channel candidate" includes the following meanings: the first information block includes a switch (on / off or enable / disable) for the association between the control channel candidates, the first information block indicates that the association between the second control channel candidate and the third control channel candidate is turned on, and the second control channel candidate and the third control channel candidate are associated according to predefined rules.

[0390] As an example, "the first information block is used to determine the association between the second control channel candidate and the third control channel candidate" includes the following meaning: the first information block is used to determine the association rules between the second control channel candidate and the third control channel candidate.

[0391] As an example, "the first information block is used to determine that the second control channel candidate and the third control channel candidate are associated" includes the following meaning: the first information block explicitly indicates that the second control channel candidate and the third control channel candidate are associated.

[0392] As an example, "the first information block is used to determine that the second control channel candidate and the third control channel candidate are associated" includes the following meaning: the first information block implicitly indicates that the second control channel candidate and the third control channel candidate are associated.

[0393] As an example, "the first information block is used to determine the association type between the second control channel candidate and the third control channel candidate" includes the following meaning: the first information block is used by the first node device in this application to determine the association type between the second control channel candidate and the third control channel candidate.

[0394] As an example, "the first information block is used to determine the association type between the second control channel alternative and the third control channel alternative" includes the following meaning: the first information block is used to explicitly indicate the association type between the second control channel alternative and the third control channel alternative.

[0395] As an example, "the first information block is used to determine the association type between the second control channel candidate and the third control channel candidate" includes the following meaning: the first information block is used to implicitly indicate the association type between the second control channel candidate and the third control channel candidate.

[0396] As an example, the first information block includes a first IE, which is an IE (Information Element) included in the first information block. The first IE includes two fields used to determine the association between the second control channel candidate and the third control channel candidate, and to determine the association type between the second control channel candidate and the third control channel candidate, respectively.

[0397] As an example, the first information block includes a first field, which is a field included in the first information block. The first field is used to simultaneously determine the association between the second control channel candidate and the third control channel candidate and to determine the association type between the second control channel candidate and the third control channel candidate.

[0398] As one embodiment, the first information block includes Q sub-information blocks, where Q is a positive integer. The Q sub-information blocks are used to determine Q pairs of control channel candidates and Q association type indications, respectively. Each pair of control channel candidates in the Q pairs includes two associated control channel candidates. Each association type indication in the Q association type indications is used to indicate the association type between a pair of control channel candidates. The second control channel candidate and the third control channel candidate belong to a pair of control channel candidates in the Q pairs. The target sub-information block is a sub-information block in the Q sub-information blocks used to determine the pair of control channel candidates to which the second control channel candidate and the third control channel candidate belong. The target sub-information block is used to determine a target association indication in the Q association indications. The target association indication is used to indicate the association type between the second control channel candidate and the third control channel candidate.

[0399] As one embodiment, the first information block includes a first add list and a first release list. The first add list and the first release list are used to determine Q sub-information blocks, where Q is a positive integer. The Q sub-information blocks are used to determine Q pairs of control channel candidates and Q association type indications, respectively. Each pair of control channel candidates in the Q pairs includes two associated control channel candidates. Each association type indication in the Q association type indications is used to indicate the association type between a pair of control channel candidates. The second control channel candidate and the third control channel candidate belong to a pair of control channel candidates in the Q pairs. The target sub-information block is a sub-information block in the Q sub-information blocks used to determine the pair of control channel candidates to which the second control channel candidate and the third control channel candidate belong. The target sub-information block is used to determine a target association indication in the Q association indications. The target association indication is used to indicate the association type between the second control channel candidate and the third control channel candidate.

[0400] As an example, the index of the third control channel candidate is different from the index of the second control channel candidate.

[0401] As an example, the index of the third control channel candidate in the search space set to which the third control channel candidate belongs is different from the index of the second control channel candidate in the search space set to which the second control channel candidate belongs.

[0402] As an example, the time slot of the third control channel candidate in the time domain is different from that of the second control channel candidate in the time domain.

[0403] As an example, the time slot to which the third control channel candidate belongs in the time domain is different from the span to which the second control channel candidate belongs in the time domain.

[0404] As an example, the time slot to which the third control channel candidate belongs in the time domain is different from the monitoring opportunity (MO) to which the second control channel candidate belongs in the time domain.

[0405] As an example, the index of the search space set to which the third control channel candidate belongs is different from the index of the search space set to which the second control channel candidate belongs.

[0406] As an example, the CCE occupied by the second control channel alternative and the CCE occupied by the third control channel alternative are different.

[0407] As one embodiment, the second control channel alternative and the third control channel alternative occupy different time-frequency domain resources in the time-frequency domain.

[0408] As one example, the second control channel candidate and the third control channel candidate belong to two different search space sets.

[0409] As an example, the control resource set (CORESET) corresponding to the search space set to which the second control channel candidate belongs is different from the control resource set (CORESET) corresponding to the search space set to which the third control channel candidate belongs.

[0410] As one embodiment, the quasi-co-addressable reference signals included in the second control channel alternative are different from the quasi-co-addressable reference signals included in the third control channel alternative.

[0411] As one embodiment, the CCE occupied by the second control channel candidate belongs to the first control resource set, and the CCE occupied by the third control channel candidate belongs to the second control resource set; the CORESET Pool Index provided to the first control resource set and the CORESET Pool Index provided to the second control resource set are not equal.

[0412] As an example, "there are overlapping time-domain resources between the time-domain resources indicated by the DCI carried by the second control channel alternative and the time-domain resources indicated by the DCI carried by the third control channel alternative" includes the following meaning: the first node device assumes that there are overlapping time-domain resources between the time-domain resources indicated by the DCI carried by the second control channel alternative and the time-domain resources indicated by the DCI carried by the third control channel alternative.

[0413] As an example, the DCI (Downlink Control Information) format of the DCI carried by the second control channel candidate is the same as the DCI (Downlink Control Information) format of the DCI carried by the third control channel candidate.

[0414] As an example, the DCI (Downlink Control Information) format of the DCI carried by the second control channel candidate is different from the DCI (Downlink Control Information) format of the DCI carried by the third control channel candidate.

[0415] As an example, the DCI carried by the second control channel alternative and the DCI carried by the third control channel alternative indicate the same HARQ process number.

[0416] As an example, the DCI carried by the second control channel alternative and the DCI carried by the third control channel alternative indicate different HARQ process numbers.

[0417] As an example, the DCI carried by the second control channel alternative and the DCI carried by the third control channel alternative indicate the same transport block (TB).

[0418] As one embodiment, the DCI carried by the second control channel alternative and the DCI carried by the third control channel alternative are used to schedule the same one or two transport blocks (TBs).

[0419] As an example, the DCI carried by the second control channel alternative and the DCI carried by the third control channel alternative indicate the same DAI (Downlink Assignment Index) value.

[0420] As an example, the DCI carried by the second control channel alternative and the DCI carried by the third control channel alternative respectively indicate different DAI (Downlink Assignment Index) values.

[0421] As an example, the DCI carried by the second control channel alternative and the DCI carried by the third control channel alternative indicate the same T-DAI (Total Downlink Assignment Index) value.

[0422] As an example, the DCI carried by the second control channel alternative and the DCI carried by the third control channel alternative respectively indicate different T-DAI (Total Downlink Assignment Index) values.

[0423] As an example, the DCI carried by the second control channel alternative and the DCI carried by the third control channel alternative indicate the same C-DAI (Counter Downlink Assignment Index) value.

[0424] As an example, the DCI carried by the second control channel alternative and the DCI carried by the third control channel alternative indicate different C-DAI (Counter Downlink Assignment Index) values.

[0425] As an example, the first transceiver sends a first HARQ feedback, wherein the first HARQ feedback includes a HARQ-ACK for the PDSCH; the DCI carried by the second control channel alternative and the DCI carried by the third control channel alternative respectively indicate different DAI (Downlink Assignment Index) values, and the DAI indicated by the later received DCI between the DCI carried by the second control channel alternative and the DCI carried by the third control channel alternative is used to determine the HARQ-ACK bits included in the first HARQ feedback.

[0426] As an example, the first transceiver sends a first HARQ feedback and a second HARQ feedback, wherein the first HARQ feedback and the second HARQ feedback both include the same PDSCH HARQ-ACK; the DCI carried by the second control channel alternative and the DCI carried by the third control channel alternative respectively indicate different DAI (Downlink Assignment Index) values; when the same PDSCH is correctly decoded, the first HARQ feedback and the second HARQ feedback both include ACK (Acknowledgement); when the same PDSCH is not correctly decoded, the first HARQ feedback and the second HARQ feedback both include NACK (Non-Acknowledgement).

[0427] As an example, "there are overlapping time-domain resources between the time-domain resources indicated by the DCI carried by the second control channel alternative and the time-domain resources indicated by the DCI carried by the third control channel alternative" includes the following meaning: there exists a time-domain symbol that is simultaneously occupied by both the time-domain resources indicated by the DCI carried by the second control channel alternative and the time-domain resources indicated by the DCI carried by the second control channel alternative.

[0428] As an example, the phrase "there are overlapping time-domain resources between the time-domain resources indicated by the DCI carried by the second control channel alternative and the time-domain resources indicated by the DCI carried by the third control channel alternative" includes the following meaning: the time-domain resources indicated by the DCI carried by the second control channel alternative and the time-domain resources indicated by the DCI carried by the third control channel alternative are completely identical.

[0429] As an example, the phrase "there are overlapping time-domain resources between the time-domain resources indicated by the DCI carried by the second control channel alternative and the time-domain resources indicated by the DCI carried by the third control channel alternative" includes the following meaning: the time-frequency resources indicated by the DCI carried by the second control channel alternative and the time-frequency resources indicated by the DCI carried by the third control channel alternative are completely identical.

[0430] As an example, "there are overlapping time-domain resources between the time-domain resources indicated by the DCI carried by the second control channel candidate and the time-domain resources indicated by the DCI carried by the third control channel candidate" includes the following meaning: there exists an RE that simultaneously belongs to both the time-frequency resources indicated by the DCI carried by the second control channel candidate and the time-frequency resources indicated by the DCI carried by the third control channel candidate.

[0431] As an example, the phrase "there are overlapping time-domain resources between the time-domain resources indicated by the DCI carried by the second control channel candidate and the time-domain resources indicated by the DCI carried by the third control channel candidate" includes the following meaning: the time-frequency resources indicated by the DCI carried by the second control channel candidate and the time-frequency resources indicated by the DCI carried by the third control channel candidate are non-orthogonal.

[0432] Example 10

[0433] Example 10 illustrates a schematic diagram of a first threshold according to an embodiment of this application, as shown in the attached diagram. Figure 10 As shown. In the appendix Figure 10 In the table, the first column from the left represents the subcarrier spacing, the second column from the left represents the possible thresholds, the subcarrier spacing in the bolded row is the subcarrier spacing of the first control channel candidate in the frequency domain, and the threshold in the bolded row is the first threshold, where a0, a1, a2, and a3 represent four predefined positive integers.

[0434] In Embodiment 10, the CCE occupied by the first control channel candidate and the second control channel candidate in this application belongs to the target time window in the time domain. The total number of monitoring counts by the first node device in this application in the target time window is not greater than a first threshold, which is a positive integer greater than 1. The subcarrier spacing of the subcarrier occupied by the first control channel candidate in the frequency domain is used to determine the first threshold.

[0435] As an example, the target time window is a slot.

[0436] As an example, the target time window is an extension (Span).

[0437] As an example, the target time window is a monitoring opportunity (MO).

[0438] As one embodiment, the target time window comprises a positive integer number of time-domain symbols.

[0439] As one example, the target time window comprises a positive integer number of time slots greater than 1.

[0440] As an example, "the total number of monitoring counts by the first node device in the target time window" includes: the total number of monitored PDCCH candidates counted by the first node device in the target time window.

[0441] As an example, "the total number of monitoring times recorded by the first node device in the target time window" includes: the total number of PDCCH monitoring times recorded by the first node device in the target time window.

[0442] As an example, "the total number of monitoring counts by the first node device in the target time window" includes: the total number of PDCCH blind detections counted by the first node device in the target time window.

[0443] As an example, "the total number of monitoring events recorded by the first node device in the target time window" includes: the total number of PDCCH decoding events recorded by the first node device in the target time window.

[0444] As an example, "the total number of monitoring counts recorded by the first node device in the target time window" includes: the total number of monitoring counts recorded by the first node device on all serving cells in the target time window.

[0445] As an example, "the total number of monitoring counts by the first node device in the target time window" includes: the total number of monitoring counts by the first node device on all scheduling cells in the target time window.

[0446] As an example, "the total number of monitoring counts by the first node device in the target time window" includes: the total number of monitoring counts by the first node device on a serving cell in the target time window.

[0447] As an example, the first threshold is the maximum number of monitoring times that the first node device can support in the target time window.

[0448] As an example, the first threshold is the budget for the number of times the first node device monitors the target time window.

[0449] As an example, the first threshold is equal to

[0450] As an example, the first threshold is equal to

[0451] As an example, the first threshold is equal to

[0452] As an example, the first threshold is equal to

[0453] As an example, the first node device assumes that the total number of monitoring events counted within the target time window is not greater than the first threshold.

[0454] As an example, the first control channel is selected from the subcarrier spacing (SCS) of the subcarriers occupied in the frequency domain, which is equal to one of 15kHz, 30kHz, 60kHz, 120kHz, and 240kHz.

[0455] As an example, "the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the first threshold" includes the following meaning: the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used by the first node device in this application to determine the first threshold.

[0456] As an example, "the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the first threshold" includes the following meaning: the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used by the second node device in this application to determine the first threshold.

[0457] As an example, "the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the first threshold" includes the following meaning: the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the first threshold according to the correspondence.

[0458] As one embodiment, "the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the first threshold" includes the following meanings: the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is equal to the first subcarrier spacing, the first subcarrier spacing is one of X candidate subcarrier spacings, where X is a positive integer greater than 1; the X candidate subcarrier spacings correspond one-to-one with X candidate thresholds, any one of the X candidate thresholds is a positive integer, and the first threshold is the candidate threshold among the X candidate thresholds that corresponds to the first subcarrier spacing. As a supplementary embodiment of the above embodiment, the X candidate subcarrier spacings and the X candidate thresholds are predefined. As a supplementary embodiment of the above embodiment, the X candidate subcarrier spacings and the X candidate thresholds are configurable. As a supplementary embodiment of the above embodiment, the one-to-one correspondence between the X candidate subcarrier spacings and the X candidate thresholds is predefined.

[0459] As an example, "the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the first threshold" includes the following meaning: the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the feature threshold, and the feature threshold and the number of serving cells simultaneously supported by the first node device are used together to determine the first threshold, and the feature threshold is a positive integer greater than 1.

[0460] As an example, "the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the first threshold" includes the following meaning: the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the feature threshold, and the feature threshold, the number of serving cells simultaneously supported by the first node device, and the number of control resource set resource pool (CORESET Pool) indexes supported by the first node device are used together to determine the first threshold, and the feature threshold is a positive integer greater than 1.

[0461] As an example, "the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the first threshold" includes the following meaning: the subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the feature threshold, and the feature threshold and the number of control resource set resource pool (CORESET Pool) indexes supported by the first node device are used together to determine the first threshold, and the feature threshold is a positive integer greater than 1.

[0462] Example 11

[0463] Example 11 illustrates a structural block diagram of a processing device in a first node device according to an embodiment, as shown in the attached diagram. Figure 11 As shown. In the appendix Figure 11 In the first node device processing unit 1100, there are a first transceiver 1101 and a first receiver 1102.

[0464] The first transceiver 1101 includes the appendix to this application. Figure 4 The transmitter / receiver 456 (including antenna 460), the transmitter processor 455, the receiver processor 452, and the controller / processor 490 are included; the first receiver 1102 includes the appendix to this application. Figure 4 The transmitter / receiver 456 (including antenna 460), receiver processor 452, and controller / processor 490 are included.

[0465] In embodiment 11, the first transceiver 1101 receives a first information block, which is used to determine M1 control channel candidates. Each of the M1 control channel candidates occupies a positive integer number of control channel CEs, where M1 is a positive integer greater than 1. The first receiver 1102 monitors the first control channel candidate, which is one of the M1 control channel candidates. The second control channel candidate is a control channel candidate that occupies the same number of CCEs as the first control channel candidate. The first control channel candidate and the second control channel candidate have the same scrambling code. The DCI format size carried by the first control channel candidate is the same as that carried by the second control channel candidate; the index of the first control channel candidate is not equal to the index of the second control channel candidate; the association status of the second control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count, and the association status of the second control channel candidate includes at least one of the following: whether the second control channel candidate is associated with a control channel candidate, the control channel candidate associated with the second control channel candidate, and the association type of the second control channel candidate.

[0466] As an example, when the second control channel alternative is associated with a control channel alternative other than the second control channel alternative, the quasi-co-address of the reference signals included in the second control channel alternative is different from the quasi-co-address of the reference signals included in the control channel alternative associated with the second control channel alternative.

[0467] As an example, the index of the control resource set applied to the search space set to which the first control channel candidate belongs is the same as the index of the control resource set applied to the search space set to which the second control channel candidate belongs; the value of the carrier indication field included in the DCI carried by the first control channel candidate is equal to the value of the carrier indication field included in the DCI carried by the second control channel candidate.

[0468] As an example, when the search space set to which the first control channel candidate belongs is the same as the search space set to which the second control channel candidate belongs, the index of the first control channel candidate is the index of the first control channel candidate in its search space set, and the index of the second control channel candidate is the index of the second control channel candidate in its search space set; when the search space set to which the first control channel candidate belongs is different from the search space set to which the second control channel candidate belongs, the index of the first control channel candidate is equal to the index of the search space set to which the first control channel candidate belongs, and the index of the second control channel candidate is equal to the index of the search space set to which the second control channel candidate belongs.

[0469] As one embodiment, the first transceiver 1101 transmits a second information block; wherein the second information block is used to indicate whether the first node device supports at least one of the association types between two control channel alternatives and between control channel alternatives supported by the first node device.

[0470] As one embodiment, the first information block is used to determine that the second control channel candidate and the third control channel candidate are associated, and the first information block is used to determine the association type between the second control channel candidate and the third control channel candidate, wherein the third control channel candidate is a control channel candidate other than the second control channel candidate; there are overlapping time-domain resources between the time-domain resources indicated by the DCI carried by the second control channel candidate and the time-domain resources indicated by the DCI carried by the third control channel candidate.

[0471] As an example, the CCE occupied by the first control channel candidate and the second control channel candidate belongs to the target time window in the time domain, and the total number of monitoring counts by the first node device in the target time window is not greater than a first threshold, which is a positive integer greater than 1; the subcarrier spacing of the subcarrier occupied by the first control channel candidate in the frequency domain is used to determine the first threshold.

[0472] Example 12

[0473] Example 12 illustrates a structural block diagram of a processing device in a second node device according to an embodiment, as shown in the attached diagram. Figure 12 As shown. In the appendix Figure 12 In the process, the second node equipment processing device 1200 includes a second transceiver 1201 and a first transmitter 1202.

[0474] The second transceiver 1201 includes the appendix to this application. Figure 4 The transmitter / receiver 416 (including antenna 460), receiver processor 412, transmitter processor 415, and controller / processor 440 are included; the first transmitter 1202 includes the appendix to this application. Figure 4 The transmitter / receiver 416 (including antenna 460), the transmitter processor 415, and the controller / processor 440 are included.

[0475] In embodiment 12, the second transceiver 1201 transmits a first information block, which is used to indicate M1 control channel candidates. Each of the M1 control channel candidates occupies a positive integer number of control channel CEs, where M1 is a positive integer greater than 1. The first transmitter 1202 determines a first control channel candidate, which is one of the M1 control channel candidates. The second control channel candidate is a control channel candidate that occupies the same number of CCEs as the first control channel candidate. The first control channel candidate and the second control channel candidate have the same scrambling code. The DCI format size carried by the first control channel candidate is the same as that carried by the second control channel candidate; the index of the first control channel candidate is not equal to the index of the second control channel candidate; the association status of the second control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count, and the association status of the second control channel candidate includes at least one of the following: whether the second control channel candidate is associated with a control channel candidate, the control channel candidate associated with the second control channel candidate, and the association type of the second control channel candidate.

[0476] As an example, when the second control channel alternative is associated with a control channel alternative other than the second control channel alternative, the quasi-co-address of the reference signals included in the second control channel alternative is different from the quasi-co-address of the reference signals included in the control channel alternative associated with the second control channel alternative.

[0477] As an example, the index of the control resource set applied to the search space set to which the first control channel candidate belongs is the same as the index of the control resource set applied to the search space set to which the second control channel candidate belongs; the value of the carrier indication field included in the DCI carried by the first control channel candidate is equal to the value of the carrier indication field included in the DCI carried by the second control channel candidate.

[0478] As an example, when the search space set to which the first control channel candidate belongs is the same as the search space set to which the second control channel candidate belongs, the index of the first control channel candidate is the index of the first control channel candidate in its search space set, and the index of the second control channel candidate is the index of the second control channel candidate in its search space set; when the search space set to which the first control channel candidate belongs is different from the search space set to which the second control channel candidate belongs, the index of the first control channel candidate is equal to the index of the search space set to which the first control channel candidate belongs, and the index of the second control channel candidate is equal to the index of the search space set to which the second control channel candidate belongs.

[0479] As one embodiment, the first transceiver 1201 receives a second information block; wherein the second information block is used to indicate whether the sender of the second information block supports at least one of the association types between two control channel alternatives and between the control channel alternatives supported by the sender of the second information block.

[0480] As one embodiment, the first information block is used to indicate that the second control channel candidate and the third control channel candidate are associated, and the first information block is used to indicate the association type between the second control channel candidate and the third control channel candidate, wherein the third control channel candidate is a control channel candidate other than the second control channel candidate; there are overlapping time-domain resources between the time-domain resources indicated by the DCI carried by the second control channel candidate and the time-domain resources indicated by the DCI carried by the third control channel candidate.

[0481] As an example, the CCE occupied by the first control channel candidate and the second control channel candidate belongs to the target time window in the time domain, and the total number of monitoring counts of the first control channel candidate in the target time window is not greater than a first threshold, which is a positive integer greater than 1; the subcarrier spacing of the subcarrier occupied by the first control channel candidate in the frequency domain is used to determine the first threshold.

[0482] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, hard disk, or optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiments can be implemented in hardware or in the form of software functional modules. This application is not limited to any specific combination of software and hardware. The first node device or second node device or UE or terminal in this application includes, but is not limited to, mobile phones, tablets, laptops, network cards, low-power devices, eMTC devices, NB-IoT devices, vehicle communication devices, aircraft, airplanes, drones, remote-controlled airplanes, and other wireless communication devices. The base station device or base station or network-side device in this application includes, but is not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, eNBs, gNBs, transmit / receive nodes (TRPs), relay satellites, satellite base stations, airborne base stations, and other wireless communication devices.

[0483] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A first node device for wireless communication, characterized in that, include: The first transceiver receives the first information block, which is used to determine M1 control channel candidates. Any one of the M1 control channel candidates occupies a positive integer number of CCEs, where M1 is a positive integer greater than 1. The number of CCEs occupied by any one of the M1 control channel candidates is equal to one of 1, 2, 4, 8, or 16. The first receiver monitors the first control channel alternative and the second control channel alternative, wherein the first control channel alternative is one of the M1 control channel alternatives; Wherein, the second control channel candidate is a control channel candidate that occupies the same CCE set as the first control channel candidate; the first control channel candidate and the second control channel candidate have the same scrambling code; the size of the DCI format carried by the first control channel candidate is the same as the size of the DCI format carried by the second control channel candidate; the index of the search space set to which the first control channel candidate belongs is less than the index of the search space set to which the second control channel candidate belongs; whether the second control channel candidate is associated with a control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count.

2. The first node device according to claim 1, characterized in that, When the second control channel alternative is associated with another control channel alternative, the quasi-co-address of the reference signals included in the second control channel alternative is different from the quasi-co-address of the reference signals included in the control channel alternative associated with the second control channel alternative.

3. The first node device according to claim 2, characterized in that, The reference signals included in the second control channel candidate and the reference signals included in the control channel candidate associated with the second control channel candidate are respectively co-located with CSI-RS occupying different time-frequency resources, or the TCI state of the reference signals included in the second control channel candidate and the TCI state of the reference signals included in the control channel candidate associated with the second control channel candidate are different; the quasi-co-location type of the reference signals included in the second control channel candidate and the quasi-co-location type of the reference signals included in the control channel candidate associated with the second control channel candidate are the same.

4. The first node device according to claim 2 or 3, characterized in that, The first transceiver receives a fourth information block; wherein the fourth information block is used to determine a target standard co-address set, the target standard co-address set including a positive integer number of antenna port quasi-co-addresses greater than 1, the quasi-co-address of the reference signal included in the second control channel candidate is an antenna port quasi-co-address included in the target standard co-address set, and the quasi-co-address of the reference signal included in the control channel candidate associated with the second control channel candidate is an antenna port quasi-co-address included in the target standard co-address set.

5. The first node device according to any one of claims 1 to 4, characterized in that, The index of the control resource set applied to the search space set to which the first control channel candidate belongs is the same as the index of the control resource set applied to the search space set to which the second control channel candidate belongs; the value of the carrier indication field included in the DCI carried by the first control channel candidate is equal to the value of the carrier indication field included in the DCI carried by the second control channel candidate.

6. The first node device according to claim 5, characterized in that, The set of control resources applied to the search space set to which the first control channel candidate belongs is a CORESET to which the CCE occupied by the first control channel candidate belongs, and the set of control resources applied to the search space set to which the second control channel candidate belongs is a CORESET to which the CCE occupied by the second control channel candidate belongs. Alternatively, the control resource set applied to the search space set to which the first control channel candidate belongs is a CORESET associated with the search space set to which the first control channel candidate belongs, and the control resource set applied to the search space set to which the second control channel candidate belongs is a CORESET associated with the search space set to which the second control channel candidate belongs.

7. The first node device according to any one of claims 1 to 6, characterized in that, The first transceiver sends a second information block; wherein the second information block is used to indicate whether the first node device supports the association between two control channel alternatives.

8. The first node device according to claim 7, characterized in that, The second information block includes all or part of the RRC signaling; the second information block is used to indicate whether the first node device supports association between two control channel alternatives, and when the first node device supports association between two control channel alternatives, the second information block is used to indicate the association type between the control channel alternatives supported by the first node device.

9. The first node device according to any one of claims 1 to 8, characterized in that, The first information block is used to determine that the second control channel candidate and the third control channel candidate are associated, wherein the third control channel candidate is a control channel candidate other than the second control channel candidate; The DCI format of the DCI carried by the second control channel alternative is the same as that of the DCI carried by the third control channel alternative.

10. The first node device according to claim 9, characterized in that, The second control channel candidate and the third control channel candidate belong to two different search space sets, and the control resource set corresponding to the search space set to which the second control channel candidate belongs is different from the control resource set corresponding to the search space set to which the third control channel candidate belongs.

11. The first node device according to any one of claims 1 to 10, characterized in that, The CCE occupied by the first control channel candidate and the second control channel candidate belongs to the target time window in the time domain. The total number of monitoring counts by the first node device in the target time window is not greater than a first threshold, which is a positive integer greater than 1. The subcarrier spacing of the subcarrier occupied by the first control channel candidate in the frequency domain is used to determine the first threshold.

12. The first node device according to claim 11, characterized in that, The target time window is a time slot, and the first threshold is equal to... or in, This represents the maximum number of candidate physical downlink control channels (PDCCHs) for each time slot under the subcarrier spacing SCSμ. This indicates the total number of PDCCH candidates for each time slot under the SCSμ; Alternatively, the target time window may be an extended or comprise a positive integer number of time slots greater than 1, and the first threshold may be equal to... or in, This represents the maximum number of monitoring PDCCH alternatives when using the combination (X,Y) for the SCSμ. This represents the total number of monitoring PDCCH alternatives when the combination (X,Y) is used for the SCSμ.

13. The first node device according to claim 11 or 12, characterized in that, The subcarrier spacing of the first control channel candidate in the frequency domain is equal to the first subcarrier spacing, and the first subcarrier spacing is one of X candidate subcarrier spacings, where X is a positive integer greater than 1; the X candidate subcarrier spacings correspond one-to-one with X candidate thresholds, and any one of the X candidate thresholds is a positive integer, and the first threshold is the candidate threshold among the X candidate thresholds that corresponds to the first subcarrier spacing.

14. The first node device according to claim 11 or 12, characterized in that, The subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the feature threshold. The feature threshold, together with the number of simultaneously supported serving cells, is used to determine the first threshold. The feature threshold is a positive integer greater than 1.

15. The first node device according to any one of claims 11 to 14, characterized in that, The first information block is used to determine N1 control channel candidates, where any one of the M1 control channel candidates is a control channel candidate among the N1 control channel candidates, and N1 is a positive integer greater than M1; M1 is not greater than the first threshold, and the first threshold is used to determine the M1 control channel candidates from the N1 control channel candidates.

16. The first node device according to any one of claims 1 to 15, characterized in that, When the second control channel candidate is associated with a control channel candidate other than the second control channel candidate, the second control channel candidate is counted in the monitoring count; when the second control channel candidate is not associated with any control channel candidate other than the second control channel candidate, the second control channel candidate is not counted in the monitoring count.

17. The first node device according to any one of claims 1 to 16, characterized in that, The first information block is user equipment specific, and the first information block includes all or part of the fields in the SearchSpace of an information unit in an RRC signaling; the monitoring of the first control channel candidate is based on the decoding of the first control channel candidate in the monitored DCI format; The format of the DCI carried by the first control channel alternative is different from the format of the DCI carried by the second control channel alternative.

18. The first node device according to any one of claims 1 to 17, characterized in that, Whether the second control channel alternative is associated with a control channel alternative includes whether the DCI carried by the second control channel alternative and the DCI carried by a control channel alternative other than the second control channel alternative are two duplicate transmissions of the same DCI.

19. The first node device according to any one of claims 1 to 18, characterized in that, The index of the search space set to which the first control channel candidate belongs is a non-negative integer, and the index of the search space set to which the second control channel candidate belongs is an integer greater than 0 and less than 40.

20. The first node device according to any one of claims 1 to 19, characterized in that, The monitor of the first control channel alternative does not expect the control channel alternative associated with the second control channel alternative to include the first control channel alternative or the control channel alternative associated with the first control channel alternative.

21. A second node device for wireless communication, characterized in that, include: The second transceiver sends a first information block, which is used to indicate M1 control channel candidates. Any one of the M1 control channel candidates occupies a positive integer number of CCEs, where M1 is a positive integer greater than 1. The number of CCEs occupied by any one of the M1 control channel candidates is equal to one of 1, 2, 4, 8, or 16. The first transmitter determines a first control channel candidate and a second control channel candidate, wherein the first control channel candidate is one of the M1 control channel candidates; Wherein, the second control channel candidate is a control channel candidate that occupies the same CCE set as the first control channel candidate; the first control channel candidate and the second control channel candidate have the same scrambling code; the size of the DCI format carried by the first control channel candidate is the same as the size of the DCI format carried by the second control channel candidate; the index of the search space set to which the first control channel candidate belongs is less than the index of the search space set to which the second control channel candidate belongs; whether the second control channel candidate is associated with a control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count.

22. The second node device according to claim 21, characterized in that, When the second control channel alternative is associated with another control channel alternative, the quasi-co-address of the reference signals included in the second control channel alternative is different from the quasi-co-address of the reference signals included in the control channel alternative associated with the second control channel alternative.

23. The second node device according to claim 22, characterized in that, The reference signals included in the second control channel candidate and the reference signals included in the control channel candidate associated with the second control channel candidate are respectively co-located with CSI-RS occupying different time-frequency resources, or the TCI state of the reference signals included in the second control channel candidate and the TCI state of the reference signals included in the control channel candidate associated with the second control channel candidate are different; the quasi-co-location type of the reference signals included in the second control channel candidate and the quasi-co-location type of the reference signals included in the control channel candidate associated with the second control channel candidate are the same.

24. The second node device according to claim 22 or 23, characterized in that, The second transceiver transmits a fourth information block; wherein the fourth information block is used to determine a target standard co-address set, the target standard co-address set including a positive integer number of antenna port quasi-co-addresses greater than 1, the quasi-co-address of the reference signal included in the second control channel candidate is an antenna port quasi-co-address included in the target standard co-address set, and the quasi-co-address of the reference signal included in the control channel candidate associated with the second control channel candidate is an antenna port quasi-co-address included in the target standard co-address set.

25. The second node device according to any one of claims 21 to 24, characterized in that, The index of the control resource set applied to the search space set to which the first control channel candidate belongs is the same as the index of the control resource set applied to the search space set to which the second control channel candidate belongs; the value of the carrier indication field included in the DCI carried by the first control channel candidate is equal to the value of the carrier indication field included in the DCI carried by the second control channel candidate.

26. The second node device according to claim 25, characterized in that, The set of control resources applied to the search space set to which the first control channel candidate belongs is a CORESET to which the CCE occupied by the first control channel candidate belongs, and the set of control resources applied to the search space set to which the second control channel candidate belongs is a CORESET to which the CCE occupied by the second control channel candidate belongs. Alternatively, the control resource set applied to the search space set to which the first control channel candidate belongs is a CORESET associated with the search space set to which the first control channel candidate belongs, and the control resource set applied to the search space set to which the second control channel candidate belongs is a CORESET associated with the search space set to which the second control channel candidate belongs.

27. The second node device according to any one of claims 21 to 26, characterized in that, The second transceiver receives a second information block; wherein the second information block is used to indicate whether the sender of the second information block supports the association between two control channel alternatives.

28. The second node device according to claim 27, characterized in that, The second information block includes all or part of the RRC signaling; the second information block is used to indicate whether the sender of the second information block supports association between two control channel alternatives, and when the sender of the second information block supports association between two control channel alternatives, the second information block is used to indicate the association type between the control channel alternatives supported by the sender of the second information block.

29. The second node device according to any one of claims 21 to 28, characterized in that, The first information block is used to determine that the second control channel candidate and the third control channel candidate are associated, wherein the third control channel candidate is a control channel candidate other than the second control channel candidate; The DCI format of the DCI carried by the second control channel alternative is the same as that of the DCI carried by the third control channel alternative.

30. The second node device according to claim 29, characterized in that, The second control channel candidate and the third control channel candidate belong to two different search space sets, and the control resource set corresponding to the search space set to which the second control channel candidate belongs is different from the control resource set corresponding to the search space set to which the third control channel candidate belongs.

31. The second node device according to any one of claims 21 to 30, characterized in that, The CCE occupied by the first control channel candidate and the second control channel candidate belongs to the target time window in the time domain. The total number of monitoring counts of the first control channel candidate in the target time window is not greater than a first threshold, which is a positive integer greater than 1. The subcarrier spacing of the subcarrier occupied by the first control channel candidate in the frequency domain is used to determine the first threshold.

32. The second node device according to claim 31, characterized in that, The target time window is a time slot, and the first threshold is equal to... or in, This represents the maximum number of candidate monitoring physical downlink control channels (PDCCH) per time slot under the given subcarrier spacing (SCS) μ. This indicates the total number of PDCCH candidates for each time slot under the SCSμ; Alternatively, the target time window may be an extended or comprise a positive integer number of time slots greater than 1, and the first threshold may be equal to... or in, This represents the maximum number of monitoring PDCCH candidates when using the combination (X,Y) for the SCSμ. This represents the total number of monitoring PDCCH alternatives when the combination (X,Y) is used for the SCSμ.

33. The second node device according to claim 31 or 32, characterized in that, The subcarrier spacing of the first control channel candidate in the frequency domain is equal to the first subcarrier spacing, and the first subcarrier spacing is one of X candidate subcarrier spacings, where X is a positive integer greater than 1; the X candidate subcarrier spacings correspond one-to-one with X candidate thresholds, and any one of the X candidate thresholds is a positive integer, and the first threshold is the candidate threshold among the X candidate thresholds that corresponds to the first subcarrier spacing.

34. The second node device according to claim 31 or 32, characterized in that, The subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the feature threshold. The feature threshold, together with the number of simultaneously supported serving cells, is used to determine the first threshold. The feature threshold is a positive integer greater than 1.

35. The second node device according to any one of claims 31 to 34, characterized in that, The first information block is used to determine N1 control channel candidates, where any one of the M1 control channel candidates is a control channel candidate among the N1 control channel candidates, and N1 is a positive integer greater than M1; M1 is not greater than the first threshold, and the first threshold is used to determine the M1 control channel candidates from the N1 control channel candidates.

36. The second node device according to any one of claims 21 to 35, characterized in that, When the second control channel candidate is associated with a control channel candidate other than the second control channel candidate, the second control channel candidate is counted in the monitoring count; when the second control channel candidate is not associated with any control channel candidate other than the second control channel candidate, the second control channel candidate is not counted in the monitoring count.

37. The second node device according to any one of claims 21 to 36, characterized in that, The first information block is user equipment specific, and the first information block includes all or part of the fields in the SearchSpace of an information unit in an RRC signaling; the monitoring of the first control channel candidate is based on the decoding of the first control channel candidate in the monitored DCI format; The format of the DCI carried by the first control channel alternative is different from the format of the DCI carried by the second control channel alternative.

38. The second node device according to any one of claims 21 to 37, characterized in that, Whether the second control channel alternative is associated with a control channel alternative includes whether the DCI carried by the second control channel alternative and the DCI carried by a control channel alternative other than the second control channel alternative are two duplicate transmissions of the same DCI.

39. The second node device according to any one of claims 21 to 38, characterized in that, The index of the search space set to which the first control channel candidate belongs is a non-negative integer, and the index of the search space set to which the second control channel candidate belongs is an integer greater than 0 and less than 40.

40. The second node device according to any one of claims 21 to 39, characterized in that, The monitor of the first control channel alternative does not expect the control channel alternative associated with the second control channel alternative to include the first control channel alternative or the control channel alternative associated with the first control channel alternative.

41. A method for a first node in wireless communication, characterized in that, include: Receive a first information block, which is used to determine M1 control channel candidates. Any one of the M1 control channel candidates occupies a positive integer number of CCEs, where M1 is a positive integer greater than 1. The number of CCEs occupied by any one of the M1 control channel candidates is equal to one of 1, 2, 4, 8, or 16. Monitor the first control channel candidate and the second control channel candidate, wherein the first control channel candidate is one of the M1 control channel candidates; Wherein, the second control channel candidate is a control channel candidate that occupies the same CCE set as the first control channel candidate; the first control channel candidate and the second control channel candidate have the same scrambling code; the size of the DCI format carried by the first control channel candidate is the same as the size of the DCI format carried by the second control channel candidate; the index of the search space set to which the first control channel candidate belongs is less than the index of the search space set to which the second control channel candidate belongs; whether the second control channel candidate is associated with a control channel candidate is used to determine whether the second control channel candidate is counted in the monitoring count.

42. The method in the first node according to claim 41, characterized in that, When the second control channel alternative is associated with another control channel alternative, the quasi-co-address of the reference signals included in the second control channel alternative is different from the quasi-co-address of the reference signals included in the control channel alternative associated with the second control channel alternative.

43. The method in the first node according to claim 42, characterized in that, The reference signals included in the second control channel candidate and the reference signals included in the control channel candidate associated with the second control channel candidate are respectively co-located with CSI-RS occupying different time-frequency resources, or the TCI state of the reference signals included in the second control channel candidate and the TCI state of the reference signals included in the control channel candidate associated with the second control channel candidate are different; the quasi-co-location type of the reference signals included in the second control channel candidate and the quasi-co-location type of the reference signals included in the control channel candidate associated with the second control channel candidate are the same.

44. The method in the first node according to claim 42 or 43, characterized in that, include: Receive the fourth information block; The fourth information block is used to determine the target standard co-address set, which includes a positive integer number of antenna port quasi-co-addresses greater than 1. The quasi-co-address of the reference signal included in the second control channel candidate is an antenna port quasi-co-address included in the target standard co-address set, and the quasi-co-address of the reference signal included in the control channel candidate associated with the second control channel candidate is an antenna port quasi-co-address included in the target standard co-address set.

45. The method in the first node according to any one of claims 41 to 44, characterized in that, The index of the control resource set applied to the search space set to which the first control channel candidate belongs is the same as the index of the control resource set applied to the search space set to which the second control channel candidate belongs; the value of the carrier indication field included in the DCI carried by the first control channel candidate is equal to the value of the carrier indication field included in the DCI carried by the second control channel candidate.

46. ​​The method in the first node according to claim 45, characterized in that, The set of control resources applied to the search space set to which the first control channel candidate belongs is a CORESET to which the CCE occupied by the first control channel candidate belongs, and the set of control resources applied to the search space set to which the second control channel candidate belongs is a CORESET to which the CCE occupied by the second control channel candidate belongs. Alternatively, the control resource set applied to the search space set to which the first control channel candidate belongs is a CORESET associated with the search space set to which the first control channel candidate belongs, and the control resource set applied to the search space set to which the second control channel candidate belongs is a CORESET associated with the search space set to which the second control channel candidate belongs.

47. The method in the first node according to any one of claims 41 to 46, characterized in that, include: Send the second information block; The second information block is used to indicate whether the first node device supports the association between two control channel alternatives.

48. The method in the first node according to claim 47, characterized in that, The second information block includes all or part of the RRC signaling; the second information block is used to indicate whether the first node device supports association between two control channel alternatives, and when the first node device supports association between two control channel alternatives, the second information block is used to indicate the association type between the control channel alternatives supported by the first node device.

49. The method in the first node according to any one of claims 41 to 48, characterized in that, The first information block is used to determine that the second control channel candidate and the third control channel candidate are associated, wherein the third control channel candidate is a control channel candidate other than the second control channel candidate; The DCI format of the DCI carried by the second control channel alternative is the same as that of the DCI carried by the third control channel alternative.

50. The method in the first node according to claim 49, characterized in that, The second control channel candidate and the third control channel candidate belong to two different search space sets, and the control resource set corresponding to the search space set to which the second control channel candidate belongs is different from the control resource set corresponding to the search space set to which the third control channel candidate belongs.

51. The method in the first node according to any one of claims 41 to 50, characterized in that, The CCE occupied by the first control channel candidate and the second control channel candidate belongs to the target time window in the time domain. The total number of monitoring counts by the first node device in the target time window is not greater than a first threshold, which is a positive integer greater than 1. The subcarrier spacing of the subcarrier occupied by the first control channel candidate in the frequency domain is used to determine the first threshold.

52. The method in the first node according to claim 51, characterized in that, The target time window is a time slot, and the first threshold is equal to... or in, This represents the maximum number of candidate physical downlink control channels (PDCCHs) for each time slot under the subcarrier spacing SCSμ. This indicates the total number of PDCCH candidates for each time slot under the SCSμ; Alternatively, the target time window may be an extended or comprise a positive integer number of time slots greater than 1, and the first threshold may be equal to... or in, This represents the maximum number of monitoring PDCCH alternatives when using the combination (X,Y) for the SCSμ. This represents the total number of monitoring PDCCH alternatives when the combination (X,Y) is used for the SCSμ.

53. The method in the first node according to claim 51 or 52, characterized in that, The subcarrier spacing of the first control channel candidate in the frequency domain is equal to the first subcarrier spacing, and the first subcarrier spacing is one of X candidate subcarrier spacings, where X is a positive integer greater than 1; the X candidate subcarrier spacings correspond one-to-one with X candidate thresholds, and any one of the X candidate thresholds is a positive integer, and the first threshold is the candidate threshold among the X candidate thresholds that corresponds to the first subcarrier spacing.

54. The method in the first node according to claim 51 or 52, characterized in that, The subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the feature threshold. The feature threshold, together with the number of simultaneously supported serving cells, is used to determine the first threshold. The feature threshold is a positive integer greater than 1.

55. The method in the first node according to any one of claims 51 to 54, characterized in that, The first information block is used to determine N1 control channel candidates, where any one of the M1 control channel candidates is a control channel candidate among the N1 control channel candidates, and N1 is a positive integer greater than M1; M1 is not greater than the first threshold, and the first threshold is used to determine the M1 control channel candidates from the N1 control channel candidates.

56. The method in the first node according to any one of claims 41 to 55, characterized in that, When the second control channel candidate is associated with a control channel candidate other than the second control channel candidate, the second control channel candidate is counted in the monitoring count; when the second control channel candidate is not associated with any control channel candidate other than the second control channel candidate, the second control channel candidate is not counted in the monitoring count.

57. The method in the first node according to any one of claims 41 to 56, characterized in that, The first information block is user equipment specific, and the first information block includes all or part of the fields in the SearchSpace of an information unit in an RRC signaling; the monitoring of the first control channel candidate is based on the decoding of the first control channel candidate in the monitored DCI format; The format of the DCI carried by the first control channel alternative is different from the format of the DCI carried by the second control channel alternative.

58. The method in the first node according to any one of claims 41 to 57, characterized in that, Whether the second control channel alternative is associated with a control channel alternative includes whether the DCI carried by the second control channel alternative and the DCI carried by a control channel alternative other than the second control channel alternative are two duplicate transmissions of the same DCI.

59. The method in the first node according to any one of claims 41 to 58, characterized in that, The index of the search space set to which the first control channel candidate belongs is a non-negative integer, and the index of the search space set to which the second control channel candidate belongs is an integer greater than 0 and less than 40.

60. The method in the first node according to any one of claims 41 to 59, characterized in that, The monitor of the first control channel alternative does not expect the control channel alternative associated with the second control channel alternative to include the first control channel alternative or the control channel alternative associated with the first control channel alternative.

61. A method for a second node in wireless communication, characterized in that, include: Send a first information block, which is used to indicate M1 control channel candidates. Any one of the M1 control channel candidates occupies a positive integer number of CCEs, where M1 is a positive integer greater than 1. The number of CCEs occupied by any one of the M1 control channel candidates is equal to one of 1, 2, 4, 8, or 16. A first control channel candidate and a second control channel candidate are determined, wherein the first control channel candidate is one of the M1 control channel candidates; Wherein, the second control channel candidate is a control channel candidate that occupies the same CCE set as the first control channel candidate; the first control channel candidate and the second control channel candidate have the same scrambling code; the size of the DCI format carried by the first control channel candidate is the same as the size of the DCI format carried by the second control channel candidate; the index of the search space set to which the first control channel candidate belongs is not equal to the index of the search space set to which the second control channel candidate belongs; whether the second control channel candidate is associated with a control channel candidate is used to determine whether the second control channel candidate is included in the monitoring count.

62. The method in the second node according to claim 61, characterized in that, When the second control channel alternative is associated with another control channel alternative, the quasi-co-address of the reference signals included in the second control channel alternative is different from the quasi-co-address of the reference signals included in the control channel alternative associated with the second control channel alternative.

63. The method in the second node according to claim 62, characterized in that, The reference signals included in the second control channel candidate and the reference signals included in the control channel candidate associated with the second control channel candidate are respectively co-located with CSI-RS occupying different time-frequency resources, or the TCI state of the reference signals included in the second control channel candidate and the TCI state of the reference signals included in the control channel candidate associated with the second control channel candidate are different; the quasi-co-location type of the reference signals included in the second control channel candidate and the quasi-co-location type of the reference signals included in the control channel candidate associated with the second control channel candidate are the same.

64. The method in the second node according to claim 62 or 63, characterized in that, include: Send the fourth information block; The fourth information block is used to determine the target standard co-address set, which includes a positive integer number of antenna port quasi-co-addresses greater than 1. The quasi-co-address of the reference signal included in the second control channel candidate is an antenna port quasi-co-address included in the target standard co-address set, and the quasi-co-address of the reference signal included in the control channel candidate associated with the second control channel candidate is an antenna port quasi-co-address included in the target standard co-address set.

65. The method in the second node according to any one of claims 61 to 64, characterized in that, The index of the control resource set applied to the search space set to which the first control channel candidate belongs is the same as the index of the control resource set applied to the search space set to which the second control channel candidate belongs; the value of the carrier indication field included in the DCI carried by the first control channel candidate is equal to the value of the carrier indication field included in the DCI carried by the second control channel candidate.

66. The method in the second node according to claim 65, characterized in that, The set of control resources applied to the search space set to which the first control channel candidate belongs is a CORESET to which the CCE occupied by the first control channel candidate belongs, and the set of control resources applied to the search space set to which the second control channel candidate belongs is a CORESET to which the CCE occupied by the second control channel candidate belongs. Alternatively, the control resource set applied to the search space set to which the first control channel candidate belongs is a CORESET associated with the search space set to which the first control channel candidate belongs, and the control resource set applied to the search space set to which the second control channel candidate belongs is a CORESET associated with the search space set to which the second control channel candidate belongs.

67. The method in the second node according to any one of claims 61 to 66, characterized in that, include: Receive the second information block; The second information block is used to indicate whether the sender of the second information block supports the association between the two control channel alternatives.

68. The method in the second node according to claim 67, characterized in that, The second information block includes all or part of the RRC signaling; the second information block is used to indicate whether the sender of the second information block supports association between two control channel alternatives, and when the sender of the second information block supports association between two control channel alternatives, the second information block is used to indicate the association type between the control channel alternatives supported by the sender of the second information block.

69. The method in the second node according to any one of claims 61 to 68, characterized in that, The first information block is used to determine that the second control channel candidate and the third control channel candidate are associated, wherein the third control channel candidate is a control channel candidate other than the second control channel candidate; The DCI format of the DCI carried by the second control channel alternative is the same as that of the DCI carried by the third control channel alternative.

70. The method in the second node according to claim 69, characterized in that, The second control channel candidate and the third control channel candidate belong to two different search space sets, and the control resource set corresponding to the search space set to which the second control channel candidate belongs is different from the control resource set corresponding to the search space set to which the third control channel candidate belongs.

71. The method in the second node according to any one of claims 61 to 70, characterized in that, The CCE occupied by the first control channel candidate and the second control channel candidate belongs to the target time window in the time domain. The total number of monitoring counts of the first control channel candidate in the target time window is not greater than a first threshold, which is a positive integer greater than 1. The subcarrier spacing of the subcarrier occupied by the first control channel candidate in the frequency domain is used to determine the first threshold.

72. The method in the second node according to claim 71, characterized in that, The target time window is a time slot, and the first threshold is equal to... or in, This represents the maximum number of candidate physical downlink control channels (PDCCHs) for each time slot under the subcarrier spacing SCSμ. This indicates the total number of PDCCH candidates for each time slot under the SCSμ; Alternatively, the target time window may be an extended or comprise a positive integer number of time slots greater than 1, and the first threshold may be equal to... or in, This represents the maximum number of monitoring PDCCH alternatives when using the combination (X,Y) for the SCSμ. This represents the total number of monitoring PDCCH alternatives when the combination (X,Y) is used for the SCSμ.

73. The method in the second node according to claim 71 or 72, characterized in that, The subcarrier spacing of the first control channel candidate in the frequency domain is equal to the first subcarrier spacing, and the first subcarrier spacing is one of X candidate subcarrier spacings, where X is a positive integer greater than 1; the X candidate subcarrier spacings correspond one-to-one with X candidate thresholds, and any one of the X candidate thresholds is a positive integer, and the first threshold is the candidate threshold among the X candidate thresholds that corresponds to the first subcarrier spacing.

74. The method in the second node according to claim 71 or 72, characterized in that, The subcarrier spacing of the subcarriers occupied by the first control channel candidate in the frequency domain is used to determine the feature threshold. The feature threshold, together with the number of simultaneously supported serving cells, is used to determine the first threshold. The feature threshold is a positive integer greater than 1.

75. The method in the second node according to any one of claims 71 to 74, characterized in that, The first information block is used to determine N1 control channel candidates, where any one of the M1 control channel candidates is a control channel candidate among the N1 control channel candidates, and N1 is a positive integer greater than M1; M1 is not greater than the first threshold, and the first threshold is used to determine the M1 control channel candidates from the N1 control channel candidates.

76. The method in the second node according to any one of claims 61 to 75, characterized in that, When the second control channel candidate is associated with a control channel candidate other than the second control channel candidate, the second control channel candidate is counted in the monitoring count; when the second control channel candidate is not associated with any control channel candidate other than the second control channel candidate, the second control channel candidate is not counted in the monitoring count.

77. The method in the second node according to any one of claims 61 to 76, characterized in that, The first information block is user equipment specific, and the first information block includes all or part of the fields in the SearchSpace of an information unit in an RRC signaling; the monitoring of the first control channel candidate is based on the decoding of the first control channel candidate in the monitored DCI format; The format of the DCI carried by the first control channel alternative is different from the format of the DCI carried by the second control channel alternative.

78. The method in the second node according to any one of claims 61 to 77, characterized in that, Whether the second control channel alternative is associated with a control channel alternative includes whether the DCI carried by the second control channel alternative and the DCI carried by a control channel alternative other than the second control channel alternative are two duplicate transmissions of the same DCI.

79. The method in the second node according to any one of claims 61 to 78, characterized in that, The index of the search space set to which the first control channel candidate belongs is a non-negative integer, and the index of the search space set to which the second control channel candidate belongs is an integer greater than 0 and less than 40.

80. The method in the second node according to any one of claims 61 to 79, characterized in that, The monitor of the first control channel alternative does not expect the control channel alternative associated with the second control channel alternative to include the first control channel alternative or the control channel alternative associated with the first control channel alternative.

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