A method and device used in a node for wireless communication

Abstract

The present application discloses a method and apparatus used in a node for wireless communication. The node first receives a first information set, which is used to determine a first alternative set and a second alternative set; then monitors a third alternative set, which includes the first alternative set and the second alternative set; the first alternative set includes a first alternative group and a second alternative group; any one control channel alternative included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; the target control channel alternative belongs to the second alternative group, and a first parameter is used to determine the index of the target control channel alternative in the first alternative set; the first parameter is related to multiple factors. The present application optimizes the association method of control channel alternatives from different search spaces when multiple search spaces are jointly monitored to improve performance.

Description

Technical Field

[0001] The present application relates to a transmission method and apparatus in a wireless communication system, and in particular to a design scheme and apparatus for control signaling in wireless communication. Background Art

[0002] In 5G NR (New Radio), Massive MIMO (Multi-Input Multi-Output) is a key technology. In Massive MIMO, multiple antennas use beamforming to form narrow beams pointed in a specific direction, improving communication quality. In 5G NR, CORESET (Control Resource Set) and Search Space Set (Search Space Set) for PDCCH (Physical Downlink Control Channel) monitoring are defined. Each search space set is associated with a CORESET. CORESET is used to configure frequency domain resources, CCE (Control Channel Element) to REG (Resource Element Group) mapping, and TCI (Transmission Configuration Indication) and other related information; the search space set is used to configure the time domain resources occupied by PDCCH, the supported DCI (Downlink Control Information) format (Format), the supported AL (Aggregation Level) and the number of PDCCH Candidates (alternatives) supported at different aggregation levels.

[0003] In the discussion of NR R17, for the Multi-TRP (transmitting and receiving node) scenario, in order to increase the reliability of PDCCH, the terminal can perform joint detection on two associated PDCCH candidates to improve performance. Summary of the Invention

[0004] Through research, the inventors discovered that when two search space sets can be associated together for joint PDCCH monitoring, and the two associated search space sets each include a different number of control channel candidates, how to associate the different numbers of control channel candidates together needs to be considered. Among them, a simple approach is to map according to the search space set with a smaller number of control channel candidates. However, with this approach, a portion of control channel candidates will remain in the search space set with a larger number of control channel candidates that will not be associated. In this scenario, a problem that needs to be solved is how to determine the remaining unassociated control channel candidates.

[0005] In response to the above problems, the present application discloses a solution. It should be noted that, although the above description uses large-scale MIMO and beam-based communication scenarios as examples, the present application is also applicable to other scenarios such as LTE multi-antenna systems, and achieves similar technical effects in large-scale MIMO and beam-based communication scenarios. In addition, the use of a unified solution for different scenarios (including but not limited to large-scale MIMO, beam-based communication and LTE multi-antenna systems) also helps to reduce hardware complexity and cost. In the absence of conflict, the embodiments and features in the embodiments of any node of the present application can be applied to any other node, and vice versa. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other.

[0006] In response to the above problems, the present application discloses a method and apparatus for joint monitoring of multiple PDCCH alternatives under multiple TRPs. It should be noted that, in the absence of conflict, the embodiments and features in the user equipment of the present application can be applied to the base station, and vice versa. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other. Furthermore, although the original intention of the present application is for cellular networks, the present application can also be used for the Internet of Things and the Internet of Vehicles. Furthermore, although the original intention of the present application is for multi-carrier communication, the present application can also be used for single-carrier communication. Furthermore, although the original intention of the present application is for multi-antenna communication, the present application can also be used for single-antenna communication. Furthermore, although the original intention of the present application is for terminal and base station scenarios, the present application is also applicable to communication scenarios between terminals and terminals, terminals and relays, non-terrestrial networks (NTN, Non-Terrestrial Networks), and relays and base stations, achieving similar technical effects in terminal and base station scenarios. In addition, the use of a unified solution for different scenarios (including but not limited to terminal and base station communication scenarios) also helps to reduce hardware complexity and cost.

[0007] Furthermore, in the absence of any conflict, the embodiments and features of the embodiments in the first node device of the present application may be applied to the second node device, and vice versa. In particular, the interpretation of terminology, nouns, functions, and variables in this application (unless otherwise specified) may refer to the definitions in the 3GPP Technical Specifications TS36 series, TS38 series, and TS37 series.

[0008] The present application discloses a method in a first node for wireless communication, comprising:

[0009] receiving a first information set, where the first information set is used to determine a first candidate set and a second candidate set, where the first candidate set includes K1 control channel candidates, and the second candidate set includes K2 control channel candidates, where both K1 and K2 are positive integers greater than 1;

[0010] monitoring a third candidate set, where the third candidate set includes the first candidate set and the second candidate set;

[0011] Among them, the first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any one of the control channel alternatives included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; any one of the control channel alternatives included in the first alternative set belongs to the first search space set, and any one of the control channel alternatives included in the second alternative set belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; at least one of the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and the time-frequency resources occupied by the target control channel alternative is used to determine the first parameter.

[0012] As an embodiment, a technical feature of the above method is: associating the first parameter with multiple factors, thereby realizing that the control channel alternatives included in the first alternative group are associated with the control channel alternatives included in the second alternative set in multiple ways, so as to ensure the flexibility of the above association method.

[0013] As an embodiment, another technical feature of the above method is that the number of control channel alternatives included in the second alternative set is used to determine the first parameter, so that the control channel alternatives in the second alternative group are not associated with the control channel alternatives included in the second alternative set, avoiding a many-to-one association method and simplifying system design.

[0014] As an embodiment, another technical feature of the above method is that the first search space set or the second search space set is used to determine the first parameter, so that when the identifiers of the search space sets are different, the corresponding association methods are also different, thereby reducing the mutual interference between the control channel alternatives associated between adjacent cells.

[0015] As an embodiment, another technical feature of the above method is that the time-frequency resources occupied by the target control channel alternatives are used to determine the first parameter, so as to achieve an associated manner that changes with the position of the occupied time domain resources, thereby avoiding the second alternative group being some fixed control channel alternatives in the first alternative set, and then randomizing the interference in the time domain to improve the overall performance.

[0016] According to one aspect of the present application, the control channel alternatives included in the first alternative group all adopt a first aggregation level, the control channel alternatives included in the second alternative group all adopt the first aggregation level, and the control channel alternatives in the second alternative set that are associated with the control channel alternatives included in the first alternative group adopt the first aggregation level.

[0017] As an embodiment, a technical feature of the above method is that all control channel candidates that can be associated adopt the same aggregation level to simplify system design.

[0018] According to one aspect of the present application, the control channel alternatives included in the first alternative group all adopt a first format, the control channel alternatives included in the second alternative group all adopt the first format, and the control channel alternatives in the second alternative set that are associated with the control channel alternatives included in the first alternative group adopt the first format.

[0019] As an embodiment, a technical feature of the above method is that: the control channel alternatives that can be associated all use the same control signaling format to ensure that the payload size (Payload Size) carried by the two associated control channel alternatives is the same, thereby increasing the performance of the combined control channel alternatives.

[0020] According to one aspect of the present application, the first alternative set is composed of control channel alternatives located in a first time window in the first search space set, and the second alternative set is composed of control channel alternatives located in a second time window in the second search space set, and the first time window and the second time window are associated.

[0021] According to one aspect of the present application, the first alternative group includes Q1 first-class control channel alternatives, and the Q1 first-class control channel alternatives are respectively associated with Q1 second-class control channel alternatives in the second alternative set, and Q1 is a positive integer greater than 1, and the total number of monitoring times counted for the Q1 first-class control channel alternatives is greater than Q1.

[0022] As an embodiment, a technical feature of the above method is that: in addition to being counted in one monitoring, the control channel candidate in the first alternative group is also combined with a control channel candidate in the second alternative set and counted in another monitoring.

[0023] According to one aspect of the present application, the quotient between K1 and K2 is used to determine the first parameter.

[0024] According to one aspect of the present application, the time domain position where the first time window is located is used to determine the first parameter.

[0025] According to one aspect of the present application, the time domain position where the second time window is located is used to determine the first parameter.

[0026] According to one aspect of the present application, the invention comprises:

[0027] receiving a first signaling;

[0028] receiving a first signal;

[0029] The first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal.

[0030] The present application discloses a method in a second node for wireless communication, comprising:

[0031] Sending a first information set, where the first information set is used to determine a first candidate set and a second candidate set, where the first candidate set includes K1 control channel candidates, and the second candidate set includes K2 control channel candidates, where both K1 and K2 are positive integers greater than 1;

[0032] Determine a third candidate set, where the third candidate set includes the first candidate set and the second candidate set;

[0033] Among them, the first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any one of the control channel alternatives included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; any one of the control channel alternatives included in the first alternative set belongs to the first search space set, and any one of the control channel alternatives included in the second alternative set belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; at least one of the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and the time-frequency resources occupied by the target control channel alternative is used to determine the first parameter.

[0034] According to one aspect of the present application, the control channel alternatives included in the first alternative group all adopt a first aggregation level, the control channel alternatives included in the second alternative group all adopt the first aggregation level, and the control channel alternatives in the second alternative set that are associated with the control channel alternatives included in the first alternative group adopt the first aggregation level.

[0035] According to one aspect of the present application, the control channel alternatives included in the first alternative group all adopt a first format, the control channel alternatives included in the second alternative group all adopt the first format, and the control channel alternatives in the second alternative set that are associated with the control channel alternatives included in the first alternative group adopt the first format.

[0036] According to one aspect of the present application, the first alternative set is composed of control channel alternatives located in a first time window in the first search space set, and the second alternative set is composed of control channel alternatives located in a second time window in the second search space set, and the first time window and the second time window are associated.

[0037] According to one aspect of the present application, the first alternative group includes Q1 first-class control channel alternatives, and the Q1 first-class control channel alternatives are respectively associated with Q1 second-class control channel alternatives in the second alternative set, and Q1 is a positive integer greater than 1, and the total number of monitoring times counted for the Q1 first-class control channel alternatives is greater than Q1.

[0038] According to one aspect of the present application, the quotient between K1 and K2 is used to determine the first parameter.

[0039] According to one aspect of the present application, the time domain position where the first time window is located is used to determine the first parameter.

[0040] According to one aspect of the present application, the time domain position where the second time window is located is used to determine the first parameter.

[0041] According to one aspect of the present application, the invention comprises:

[0042] Sending a first signaling;

[0043] sending a first signal;

[0044] The first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal.

[0045] According to one aspect of the present application, the invention comprises:

[0046] Sending a first signaling;

[0047] receiving a first signal;

[0048] The first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal.

[0049] The present application discloses a first node for wireless communication, comprising:

[0050] A first receiver receives a first information set, where the first information set is used to determine a first candidate set and a second candidate set, where the first candidate set includes K1 control channel candidates, and the second candidate set includes K2 control channel candidates, where both K1 and K2 are positive integers greater than 1;

[0051] a first transceiver, monitoring a third alternative set, wherein the third alternative set includes the first alternative set and the second alternative set;

[0052] Among them, the first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any one of the control channel alternatives included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; any one of the control channel alternatives included in the first alternative set belongs to the first search space set, and any one of the control channel alternatives included in the second alternative set belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; at least one of the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and the time-frequency resources occupied by the target control channel alternative is used to determine the first parameter.

[0053] The present application discloses a second node for wireless communication, comprising:

[0054] A first transmitter sends a first information set, where the first information set is used to determine a first candidate set and a second candidate set, where the first candidate set includes K1 control channel candidates, and the second candidate set includes K2 control channel candidates, where both K1 and K2 are positive integers greater than 1;

[0055] The second transceiver determines a third candidate set, where the third candidate set includes the first candidate set and the second candidate set;

[0056] Among them, the first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any one of the control channel alternatives included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; any one of the control channel alternatives included in the first alternative set belongs to the first search space set, and any one of the control channel alternatives included in the second alternative set belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; at least one of the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and the time-frequency resources occupied by the target control channel alternative is used to determine the first parameter.

[0057] As an example, compared with traditional solutions, this application has the following advantages:

[0058] -. The first parameter is associated with a plurality of factors, thereby achieving the control channel candidate included in the first candidate group is associated to the control channel candidate included in the second candidate set in a variety of ways to ensure the flexibility of the above association method;

[0059] The number of control channel candidates included in the second candidate set is used to determine the first parameter, so that the control channel candidates in the second candidate group are not associated with the control channel candidates included in the second candidate set, avoiding a many-to-one association method and simplifying system design;

[0060] The first search space set or the second search space set is used to determine the first parameter, so that when the identifiers of the search space sets are different, the corresponding association modes are also different, thereby reducing mutual interference between control channel candidates associated with adjacent cells;

[0061] The time-frequency resources occupied by the target control channel candidate are used to determine the first parameter, so that the associated manner changes with the position of the occupied time domain resources, thereby avoiding the second alternative group being fixed control channel alternatives in the first alternative set, thereby randomizing the interference in the time domain to improve overall performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0063] Figure 1 A processing flow chart of a first node according to an embodiment of the present application is shown;

[0064] Figure 2 A schematic diagram showing a network architecture according to an embodiment of the present application is shown;

[0065] Figure 3 A schematic diagram illustrating an embodiment of a radio protocol architecture of a user plane and a control plane according to an embodiment of the present application is shown;

[0066] Figure 4 A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application is shown;

[0067] Figure 5 A flow chart showing a first information set according to an embodiment of the present application is shown;

[0068] Figure 6 A flow chart showing a first information set according to another embodiment of the present application is shown;

[0069] Figure 7 A schematic diagram showing a first candidate set and a second candidate set according to an embodiment of the present application is shown;

[0070] Figure 8 A schematic diagram showing a first search space set and a second search space set according to an embodiment of the present application is shown;

[0071] Figure 9 A schematic diagram showing a first alternative group and a second alternative group according to an embodiment of the present application is shown;

[0072] Figure 10 A schematic diagram showing a first alternative group and a second alternative group according to another embodiment of the present application is shown;

[0073] Figure 11 A schematic diagram showing a first alternative group and a second alternative group according to yet another embodiment of the present application is shown;

[0074] Figure 12 A schematic diagram showing an application scenario according to an embodiment of the present application is shown;

[0075] Figure 13 A structural block diagram of a processing device in a first node device according to an embodiment of the present application is shown;

[0076] Figure 14A structural block diagram of a processing device in a second node device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0077] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

[0078] Example 1

[0079] Example 1 illustrates a processing flow chart of a first node, as shown in the attached Figure 1 As shown in the attached Figure 1 In the diagram 100 , each box represents a step. In embodiment 1, the first node in the present application receives a first information set in step 101 , and monitors a third candidate set in step 102 .

[0080] In embodiment 1, the first information set is used to determine a first alternative set and a second alternative set, the first alternative set includes K1 control channel alternatives, the second alternative set includes K2 control channel alternatives, and the K1 and the K2 are both positive integers greater than 1; the third alternative set includes the first alternative set and the second alternative set; the first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any one of the control channel alternatives included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; the first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, and the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any one of the control channel alternatives included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; Any control channel alternative included in an alternative set belongs to a first search space set, and any control channel alternative included in the second alternative set belongs to a second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, and the target control channel alternative is a control channel alternative included in the second alternative group, and a first parameter is used to determine the index of the target control channel alternative in the first alternative set; the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and at least one of the time-frequency resources occupied by the target control channel alternative are used to determine the first parameter.

[0081] As an embodiment, the first information set is carried by RRC (Radio Resource Control) signaling.

[0082] As an embodiment, the first information set is carried by a MAC (Medium Access Control) CE (Control Elements).

[0083] As an embodiment, the first information set includes IE (Information Elements) SearchSpace in TS 38.331.

[0084] As an embodiment, the first information set includes one or more fields in the IE SearchSpace in TS 38.331.

[0085] As an embodiment, the first information set includes one or more fields in IE PDCCH-Config in TS 38.331.

[0086] As an embodiment, the first information set includes one or more fields in IE PDCCH-ConfigCommon in TS 38.331.

[0087] As an embodiment, the first information set is used to configure the first search space set.

[0088] As an embodiment, the first information set is used to configure the second search space set.

[0089] As an embodiment, the first candidate set includes all control channel candidates in the first search space set in the first time window.

[0090] As an embodiment, the first candidate set includes all control channel candidates in the first search space set in the first time window and using the first aggregation level.

[0091] As an embodiment, the first alternative set includes control channel alternatives other than the first alternative group and the second alternative group.

[0092] As an embodiment, the second candidate set includes all control channel candidates in the second search space set in the second time window.

[0093] As an embodiment, the second candidate set includes all control channel candidates in the second search space set in the second time window and using the first aggregation level.

[0094] As an embodiment, there are at least two control channel alternatives using different aggregation levels in the first alternative set.

[0095] As an embodiment, there are at least two control channel alternatives using different aggregation levels in the second alternative set.

[0096] As an embodiment, the first time window in the present application is a time slot.

[0097] As an embodiment, the second time window in the present application is a time slot.

[0098] As an embodiment, the first time window in the present application is a PDCCH monitoring occasion (Monitoring Occasion).

[0099] As an embodiment, the second time window in the present application is a PDCCH monitoring opportunity.

[0100] As an embodiment, the first time window in the present application includes a positive integer number of consecutive time slots greater than 1.

[0101] As an embodiment, the second time window in the present application includes a positive integer number of consecutive time slots greater than 1.

[0102] As an embodiment, the third candidate set includes candidate sets other than the first candidate set and the second candidate set.

[0103] As an embodiment, the third alternative set includes Q1 third-category control channel alternatives, and the Q1 third-category control channel alternatives are respectively composed of Q1 first-category control channel alternatives and Q1 second-category control channel alternatives, any first-category control channel alternative among the Q1 first-category control channel alternatives is one of the K1 control channel alternatives included in the first alternative set, and any second-category control channel alternative among the Q1 second-category control channel alternatives is one of the K2 control channel alternatives included in the second alternative set; Q1 is a positive integer greater than 1.

[0104] As an embodiment, any control channel candidate among the K1 control channel candidates included in the first candidate set is an independent control channel candidate.

[0105] As an embodiment, any control channel candidate among the K2 control channel candidates included in the second candidate set is an independent control channel candidate.

[0106] As an embodiment, the second alternative group includes only one control channel alternative.

[0107] As an embodiment, the second alternative group includes Q2 control channel alternatives, where Q2 is a positive integer greater than 1.

[0108] As an embodiment, any control channel alternative in the second alternative group will not be associated with any control channel alternative in the second alternative set.

[0109] As an embodiment, any one of the K1 control channel candidates is a PDCCH Candidate.

[0110] As an embodiment, any one of the K2 control channel candidates is a PDCCH Candidate.

[0111] As an embodiment, any one of the K1 control channel candidates is a PSCCH (Physical Sidelink Control Channel) Candidate.

[0112] As an embodiment, any one of the K2 control channel candidates is a PSCCH Candidate.

[0113] As an embodiment, the control channel candidate in the present application is a PDCCH Candidate.

[0114] As an embodiment, the control channel candidate in the present application is a PSCCH Candidate.

[0115] As an embodiment, the control channel in the present application may optionally occupy a positive integer number of CCEs (Control Channel Element).

[0116] As an embodiment, the control channel in the present application optionally occupies a positive integer number of REs (Resource Elements) greater than 1.

[0117] As an embodiment, the first information set is used to indicate a first identifier, the first identifier is a SearchSpaceID, and the first search space set adopts the first identifier.

[0118] As a sub-embodiment of this embodiment, the first identifier is a non-negative integer.

[0119] As an embodiment, the first information set is used to indicate a second identifier, the first identifier is a SearchSpaceID, and the second search space set adopts the second identifier.

[0120] As a sub-embodiment of this embodiment, the second identifier is a non-negative integer.

[0121] As an embodiment, the first information set is used to indicate that the first search space set is associated with the second search space set.

[0122] As an embodiment, the first search space set is associated with X1 first-class time windows, the time domain resources occupied by the first alternative set belong to the first time window, the first time window is one of the X1 first-class time windows, the first information set is used to indicate the duration of the first time window in the time domain, and X1 is a positive integer greater than 1.

[0123] As a sub-embodiment of this embodiment, any one of the X1 first-type time windows is a PDCCH monitoring occasion (Monitoring Occasion).

[0124] As an embodiment, the second search space set is associated with X2 second-type time windows, the time domain resources occupied by the second alternative set belong to the second time window, the second time window is one of the X2 second-type time windows, the first information set is used to indicate the duration of the second time window in the time domain, and X2 is a positive integer greater than 1.

[0125] As a sub-embodiment of this embodiment, any second-type time window among the X2 second-type time windows is a PDCCH monitoring opportunity.

[0126] As an embodiment, the phrase "the first alternative group and the second alternative group are different" means that: the number of control channel alternatives included in the first alternative group is different from the number of control channel alternatives included in the second alternative group.

[0127] As an embodiment, the phrase “the first candidate group and the second candidate group are different” means that: the REs occupied by the first candidate group are different from the REs occupied by the second candidate group.

[0128] As an embodiment, the above phrase "the first alternative group and the second alternative group are different" means that the REs occupied by at least one control information alternative in the control channel alternatives included in the first alternative group are different from the REs occupied by any control information alternative in the control channel alternatives included in the second alternative group.

[0129] As an embodiment, the above phrase that the first alternative group and the second alternative group are different means that the REs occupied by any control information alternative in the control channel alternatives included in the first alternative group are different from the REs occupied by any control information alternative in the control channel alternatives included in the second alternative group.

[0130] As an embodiment, the above phrase "the first search space set and the second search space set are different" means that the SearchSpaceID used by the first search space set is a first identifier, the SearchSpaceID used by the second search space set is a second identifier, and the first identifier and the second identifier are different.

[0131] As an embodiment, the above phrase "the first search space set and the second search space set are different" means that the first search space set is associated with a first control resource set, the second search space set is associated with a second control resource set, and the frequency domain resources occupied by the first control resource set are different from the frequency domain resources occupied by the second control resource set.

[0132] As an embodiment, the above phrase "the first search space set and the second search space set are different" means that the first search space set is associated with a first control resource set, the second search space set is associated with a second control resource set, and the control resource set identifier (ControlResourceSetId) used by the first control resource set is different from the control resource set identifier used by the second control resource set.

[0133] As an embodiment, the phrase “the first search space set and the second search space set are different” means that: time domain resources occupied by the first search space set are different from time domain resources occupied by the second search space set.

[0134] As an embodiment, the phrase “the first search space set and the second search space set are different” means that a DCI format supported by the first search space set is different from a DCI format supported by the second search space set.

[0135] As an embodiment, the above phrase that the control channel alternatives included in the first alternative set are indexed in sequence means that the K1 control channel alternatives included in the first alternative set are indexed in sequence as control channel alternative #0 to control channel alternative #(K1-1).

[0136] As an embodiment, the above phrase that the control channel alternatives included in the first alternative set are indexed in sequence includes: the K1 control channel alternatives included in the first alternative set are indexed in sequence as control channel alternative #1 to control channel alternative #K1.

[0137] As an embodiment, the first search space set and the second search space set are respectively associated with a first control resource set (CORESET) and a second control resource set, and the first control resource set and the second control resource set are different.

[0138] As a sub-embodiment of this embodiment, the first control resource set and the second control resource set respectively use different ControlResourceSetIds.

[0139] As a sub-embodiment of this embodiment, the first control resource set and the second control resource set belong to different control resource set pools (CORESET Pool).

[0140] As an embodiment, the K2 control channel alternatives included in the second alternative set are indexed sequentially, and the K2 control channel alternatives included in the second alternative set are indexed sequentially as control channel alternative #0 to control channel alternative #(K2-1).

[0141] As an embodiment, the K2 control channel alternatives included in the second alternative set are indexed sequentially, and the K2 control channel alternatives included in the second alternative set are indexed sequentially as control channel alternative #1 to control channel alternative #K2.

[0142] As an embodiment, K1 is greater than K2.

[0143] As an embodiment, the REs occupied by any two control channel candidates in the first candidate group are orthogonal.

[0144] As an embodiment, the REs occupied by any two control channel candidates in the second candidate group are orthogonal.

[0145] As an embodiment, the REs occupied by any two control channel candidates in the first candidate set are orthogonal.

[0146] As an embodiment, the REs occupied by any two control channel candidates in the second candidate set are orthogonal.

[0147] As an embodiment, the phrase “monitoring the third candidate set” means: monitoring the control channel candidates included in the third candidate set.

[0148] As an embodiment, the third alternative set includes control channel alternatives other than the first alternative set and the second alternative set.

[0149] As an embodiment, the third candidate set includes control channel candidates belonging to the common search space.

[0150] As an embodiment, the monitoring includes blind detection.

[0151] As an embodiment, the monitoring includes demodulation.

[0152] As an embodiment, the monitoring includes coherent detection.

[0153] As an embodiment, the monitoring includes energy detection.

[0154] As an embodiment, the monitoring includes receiving.

[0155] As an embodiment, the monitoring includes decoding.

[0156] As an embodiment, the number of control channel alternatives included in the second alternative set is used to determine the first parameter.

[0157] As a sub-embodiment of this embodiment, the K1 is greater than the K2, the difference between the K1 and the K2 is equal to K3, the K3 is a non-negative integer, and the target control channel alternative is one of the first K3 control channel alternatives among the K1 control channel alternatives included in the first alternative set.

[0158] As a sub-embodiment of this embodiment, K1 is greater than K2, the difference between K1 and K2 is equal to K3, K3 is a non-negative integer, and the target control channel alternative is one of the last K3 control channel alternatives among the K1 control channel alternatives included in the first alternative set.

[0159] As an embodiment, the first identifier adopted by the first search space set is used to determine the first parameter.

[0160] As a sub-embodiment of this embodiment, the first alternative group includes K2 control channel alternatives in the first alternative set, the given control channel alternative is the (i+1)th control channel alternative among the K2 control channel alternatives included in the first alternative group, and the index of the given control channel alternative in the first alternative set is equal to i is a positive integer not less than 0 and less than K2, R1 is equal to the first identifier, Z is a positive integer predefined or configured through RRC signaling, the target control channel alternative is a control channel alternative in the first alternative set and other than the K2 control channel alternatives, and the K2 control channel alternatives in the first alternative set are sequentially associated with the K2 control channel alternatives included in the second alternative set.

[0161] As an embodiment, the second identifier adopted by the second search space set is used to determine the first parameter.

[0162] As a sub-embodiment of this embodiment, the first alternative group includes K2 control channel alternatives in the first alternative set, the given control channel alternative is the (i+1)th control channel alternative among the K2 control channel alternatives included in the first alternative group, and the index of the given control channel alternative in the first alternative set is equal to i is a positive integer not less than 0 and less than K2, R2 is equal to the second identifier, Z is a positive integer predefined or configured through RRC signaling, the target control channel alternative is a control channel alternative in the first alternative set and other than the K2 control channel alternatives, and the K2 control channel alternatives in the first alternative set are sequentially associated with the K2 control channel alternatives included in the second alternative set.

[0163] As an embodiment, the first identifier adopted by the first search space set and the first identifier adopted by the second search space set are used together to determine the first parameter.

[0164] As a sub-embodiment of this embodiment, the first alternative group includes K2 control channel alternatives in the first alternative set, the given control channel alternative is the (i+1)th control channel alternative among the K2 control channel alternatives included in the first alternative group, and the index of the given control channel alternative in the first alternative set is equal to i is a positive integer not less than 0 and less than K2, R1 is equal to the first identifier, R2 is equal to the second identifier, Z1 and Z2 are both positive integers that are predefined or configured through RRC signaling, the target control channel alternative is a control channel alternative in the first alternative set and other than the K2 control channel alternatives, and the K2 control channel alternatives in the first alternative set are sequentially associated with the K2 control channel alternatives included in the second alternative set.

[0165] As an embodiment, the time domain resources occupied by the target control channel candidate are used to determine the first parameter.

[0166] As a sub-embodiment of this embodiment, the first alternative group includes K2 control channel alternatives in the first alternative set, the given control channel alternative is the (i+1)th control channel alternative among the K2 control channel alternatives included in the first alternative group, and the index of the given control channel alternative in the first alternative set is equal to i is a positive integer not less than 0 and less than K2, T1 is related to the time domain position of the time slot occupied by the target control channel alternative, Y is a positive integer predefined or configured through RRC signaling, the target control channel alternative is a control channel alternative in the first alternative set and other than the K2 control channel alternatives, and the K2 control channel alternatives in the first alternative set are sequentially associated with the K2 control channel alternatives included in the second alternative set.

[0167] As a sub-embodiment of this embodiment, the first alternative group includes K2 control channel alternatives in the first alternative set, the given control channel alternative is the (i+1)th control channel alternative among the K2 control channel alternatives included in the first alternative group, and the index of the given control channel alternative in the first alternative set is equal to i is a positive integer not less than 0 and less than K2, T1 is related to the time domain position of the time slot occupied by the target control channel alternative, Y is a positive integer predefined or configured through RRC signaling, the target control channel alternative is a control channel alternative in the first alternative set and other than the K2 control channel alternatives, and the K2 control channel alternatives in the first alternative set are sequentially associated with the K2 control channel alternatives included in the second alternative set.

[0168] As an embodiment, the frequency domain resources occupied by the target control channel candidate are used to determine the first parameter.

[0169] As a sub-embodiment of this embodiment, the first alternative group includes K2 control channel alternatives in the first alternative set, the given control channel alternative is the (i+1)th control channel alternative among the K2 control channel alternatives included in the first alternative group, and the index of the given control channel alternative in the first alternative set is equal to i is a positive integer not less than 0 and less than K2, F1 is related to the frequency domain position of the frequency domain resources occupied by the target control channel alternative, W is a positive integer predefined or configured through RRC signaling, the target control channel alternative is a control channel alternative in the first alternative set and other than the K2 control channel alternatives, and the K2 control channel alternatives in the first alternative set are sequentially associated with the K2 control channel alternatives included in the second alternative set.

[0170] As a subsidiary embodiment of this sub-embodiment, the above phrase "the frequency domain position of the frequency domain resources occupied by the target control channel candidate" means: the frequency domain position of the starting RB (Resource Block) occupied by the CORESET to which the target control channel candidate belongs.

[0171] As a subsidiary embodiment of this sub-embodiment, the above phrase "the frequency domain position of the frequency domain resources occupied by the target control channel candidate" means: the frequency domain position of the frequency domain resources occupied by the BWP (Bandwidth Part) to which the target control channel candidate belongs.

[0172] As an embodiment, the first alternative group includes more than one control channel alternative.

[0173] As an embodiment, the first alternative group includes only one control channel alternative.

[0174] As an embodiment, the second alternative group includes more than one control channel alternative.

[0175] As an embodiment, the second alternative group includes only one control channel alternative.

[0176] Example 2

[0177] Example 2 illustrates a schematic diagram of a network architecture, as shown in the attached Figure 2 shown.

[0178] Figure 2A diagram illustrates a network architecture 200 for 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) systems. 5G NR or LTE network architecture 200 may be referred to as an EPS (Evolved Packet System) 200 or some other suitable terminology. EPS 200 may include a UE (User Equipment) 201, an NG-RAN (Next Generation Radio Access Network) 202, an EPC (Evolved Packet Core) / 5G-CN (5G-Core Network) 210, a Home Subscriber Server (HSS) 220, and an Internet service provider 230. The EPS may interconnect with other access networks, but for simplicity, these entities / interfaces are not shown. As shown, the EPS provides packet-switched services, but those skilled in the art will readily appreciate that the various concepts presented throughout this disclosure may be extended to networks providing circuit-switched services or other cellular networks. The NG-RAN includes an NR Node B (gNB) 203 and other gNBs 204. The gNB 203 provides user and control plane protocol termination towards the UE 201. The gNB 203 may be connected to other gNBs 204 via an Xn interface (e.g., backhaul). The gNB 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), TRP, or some other appropriate terminology. The gNB 203 provides an access point to the EPC / 5G-CN 210 for the UE 201. Examples of UE 201 include a cellular phone, a smartphone, a Session Initiation Protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a drone, an aircraft, a narrowband IoT device, a machine-type communication device, a land vehicle, an automobile, a wearable device, or any other similarly functional device. Those skilled in the art may also refer to UE 201 as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology. gNB 203 is connected to EPC / 5G-CN 210 via an S1 / NG interface.EPC / 5G-CN 210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / UPF (User Plane Function) 211, other MME / AMF / UPF 214, S-GW (Service Gateway) 212, and P-GW (Packet Data Network Gateway) 213. MME / AMF / UPF 211 is the control node that handles signaling between UE 201 and EPC / 5G-CN 210. Generally, MME / AMF / UPF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW 212, which itself is connected to P-GW 213. P-GW 213 provides UE IP address allocation and other functions. P-GW 213 is connected to Internet service 230. Internet services 230 include operator-specific Internet protocol services, which may include the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0179] As an embodiment, the UE201 corresponds to the first node in this application.

[0180] As an embodiment, the UE201 is capable of receiving PDCCHs from multiple TRPs simultaneously.

[0181] As an embodiment, the UE 201 is a terminal capable of monitoring multiple beams simultaneously.

[0182] As an embodiment, the UE 201 is a terminal supporting Massive-MIMO.

[0183] As an embodiment, the UE 201 is a terminal that supports V2X (Vehicle-to-Everything).

[0184] As an embodiment, the gNB203 corresponds to the second node in this application.

[0185] As an embodiment, the gNB203 is capable of simultaneously sending PDCCHs originating from multiple TRPs.

[0186] As an embodiment, the gNB203 supports multi-beam transmission.

[0187] As an embodiment, the gNB203 supports Massive-MIMO based transmission.

[0188] As an embodiment, the gNB203 includes at least two TRPs.

[0189] Example 3

[0190] Example 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to the present application, as shown in the attached figure. Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3The radio protocol architecture for the control plane 300 between a first communication node device (UE, gNB, or RSU in V2X) and a second communication node device (gNB, UE, or RSU in V2X) is shown 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. The L1 layer will be referred to herein as PHY 301. Layer 2 (L2 layer) 305 is above PHY 301 and is responsible for the link between the first and second communication node devices via PHY 301. 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 communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets. The PDCP sublayer 304 also provides support for inter-zone mobility of the first communication node device to the second communication node device. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second communication node device and the first communication node device. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture for the first communication node device and the second communication node device in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sublayer 356. The SDAP sublayer 356 is responsible for mapping between QoS flows and data radio bearers (DRBs) to support service diversity. Although not shown in the figure, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., an IP layer) terminated at the P-GW on the network side and an application layer terminated at the other end of the connection (e.g., a remote UE, a server, etc.).

[0191] As an example, Figure 3 The wireless protocol architecture in is applicable to the first node in this application.

[0192] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0193] As an embodiment, the PDCP 304 of the second communication node device is used to generate the schedule of the first communication node device.

[0194] As an embodiment, the PDCP 354 of the second communication node device is used to generate the schedule of the first communication node device.

[0195] As an embodiment, the first information set in the present application is generated by the MAC302 or MAC352.

[0196] As an embodiment, the first information set in the present application is generated in the RRC306.

[0197] As an embodiment, the first signaling in this application is generated in the PHY301 or PHY351.

[0198] As an embodiment, the first signaling in the present application is generated by the MAC302 or MAC352.

[0199] As an embodiment, the first signal in the present application is generated by the PHY301 or PHY351.

[0200] As an embodiment, the first signal in the present application is generated by the MAC302 or MAC352.

[0201] As an embodiment, the first signal in this application is generated by the RRC306.

[0202] As an embodiment, the first node is a terminal.

[0203] As an embodiment, the second node is a terminal.

[0204] As an embodiment, the second node is an RSU (Road Side Unit).

[0205] As an embodiment, the second node is a Grouphead.

[0206] As an embodiment, the second node is a TRP (Transmitter Receiver Point).

[0207] As an embodiment, the second node is a cell.

[0208] As an embodiment, the second node is an eNB.

[0209] As an embodiment, the second node is a base station.

[0210] As an embodiment, the second node is used to manage multiple TRPs.

[0211] As an embodiment, the second node is a node for managing multiple cells.

[0212] Example 4

[0213] Example 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in the attached figure. Figure 4 shown. Figure 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

[0214] The first communication device 450 includes a controller / processor 459 , a memory 460 , a data source 467 , a transmit processor 468 , a receive processor 456 , a multi-antenna transmit processor 457 , a multi-antenna receive processor 458 , a transmitter / receiver 454 and an antenna 452 .

[0215] The second communication device 410 includes a controller / processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter / receiver 418 , and an antenna 420 .

[0216] During transmission from the second communication device 410 to the first communication device 450, upper layer data packets from the core network are provided to the controller / processor 475 at the second communication device 410. The controller / processor 475 implements L2 layer functionality. During transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), M-phase-shift keying (M-PSK), and M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) in the time and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multicarrier symbol stream. The multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0217] During transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal via its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream, which is provided to the receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various L1 signal processing functions. The multi-antenna receive processor 458 performs receive analog precoding / beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. The receive processor 456 converts the baseband multi-carrier symbol stream, after the receive analog precoding / beamforming operations, from the time domain to the frequency domain using a fast Fourier transform (FFT). In the frequency domain, the receive processor 456 demultiplexes the physical layer data signal and reference signal, where the reference signal is used for channel estimation. The data signal undergoes multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in the receive processor 456, and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program code and data. The memory 460 may be referred to as a computer-readable medium. During transmission from the second communication device 410 to the second communication device 450, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 layer for L3 processing.

[0218] During transmission from the first communication device 450 to the second communication device 410, a data source 467 is used at the first communication device 450 to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functionality at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping and channel coding, while the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming. The transmit processor 468 then modulates the resulting spatial stream into a multi-carrier / single-carrier symbol stream. After analog precoding and beamforming operations in the multi-antenna transmit processor 457, the stream is provided to different antennas 452 via the transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a RF symbol stream before providing it to the antenna 452.

[0219] During transmission from the first communications device 450 to the second communications device 410, the functionality at the second communications device 410 is similar to the reception functionality at the first communications device 450 described for transmission from the second communications device 410 to the first communications device 450. Each receiver 418 receives RF signals via its corresponding antenna 420, converts the received RF signals into baseband signals, and provides the baseband signals to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 collectively implement L1 layer functionality. A controller / processor 475 implements L2 layer functionality. The controller / processor 475 may be associated with a memory 476 storing program codes and data. The memory 476 may be referred to as a computer-readable medium. During transmission from the first communications device 450 to the second communications device 410, the controller / processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the UE 450. Upper layer packets from controller / processor 475 may be provided to the core network.

[0220] As an embodiment, the first communication device 450 apparatus 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 together with the at least one processor, the first communication device 450 apparatus at least: first receives a first information set, the first information set is used to determine a first alternative set and a second alternative set, the first alternative set includes K1 control channel alternatives, the second alternative set includes K2 control channel alternatives, the K1 and the K2 are both positive integers greater than 1; then monitors a third alternative set, the third alternative set includes the first alternative set and the second alternative set; the first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, the first alternative group and is different from the second alternative group; any one of the control channel alternatives included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; any one of the control channel alternatives included in the first alternative set belongs to the first search space set, and any one of the control channel alternatives included in the second alternative set belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, and the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; at least one of the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and the time-frequency resources occupied by the target control channel alternative is used to determine the first parameter.

[0221] As an embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates an action when executed by at least one processor, wherein the action includes: first receiving a first information set, wherein the first information set is used to determine a first alternative set and a second alternative set, wherein the first alternative set includes K1 control channel alternatives, and the second alternative set includes K2 control channel alternatives, and both K1 and K2 are positive integers greater than 1; then monitoring a third alternative set, wherein the third alternative set includes the first alternative set and the second alternative set; the first alternative set includes a first alternative group and a second alternative group, wherein the first alternative group includes a positive integer number of control channel alternatives, and the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; Any one of the control channel alternatives included is associated with at least one control channel alternative included in the second alternative set; any one of the control channel alternatives included in the first alternative set belongs to the first search space set, and any one of the control channel alternatives included in the second alternative set belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, and the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and at least one of the time-frequency resources occupied by the target control channel alternative are used to determine the first parameter.

[0222] As an embodiment, the second communication device 410 apparatus 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 together with the at least one processor. The second communication device 410 apparatus at least: first sends a first information set, the first information set is used to determine a first alternative set and a second alternative set, the first alternative set includes K1 control channel alternatives, the second alternative set includes K2 control channel alternatives, and the K1 and the K2 are both positive integers greater than 1; then determines a third alternative set, the third alternative set includes the first alternative set and the second alternative set; the first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any one of the control channel alternatives included in the first alternative group and at least one included in the second alternative set The control channel alternatives are associated with each other; any control channel alternative included in the first alternative set belongs to the first search space set, and any control channel alternative included in the second alternative set belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, and the target control channel alternative is a control channel alternative included in the second alternative group, and a first parameter is used to determine the index of the target control channel alternative in the first alternative set; the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and at least one of the time-frequency resources occupied by the target control channel alternative are used to determine the first parameter.

[0223] As an embodiment, the second communication device 410 device includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates an action when executed by at least one processor, the action including: first sending a first information set, the first information set is used to determine a first alternative set and a second alternative set, the first alternative set includes K1 control channel alternatives, the second alternative set includes K2 control channel alternatives, and the K1 and the K2 are both positive integers greater than 1; then determining a third alternative set, the third alternative set includes the first alternative set and the second alternative set; the first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are not the same; the first alternative group Any one of the included control channel alternatives is associated with at least one control channel alternative included in the second alternative set; any one of the control channel alternatives included in the first alternative set belongs to the first search space set, and any one of the control channel alternatives included in the second alternative set belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, and the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and at least one of the time-frequency resources occupied by the target control channel alternative are used to determine the first parameter.

[0224] As an embodiment, the first communication device 450 corresponds to the first node in this application.

[0225] As an embodiment, the second communication device 410 corresponds to the second node in this application.

[0226] As an embodiment, the first communication device 450 is a UE.

[0227] As an embodiment, the first communication device 450 is a terminal.

[0228] As an embodiment, the second communication device 410 is a base station.

[0229] As an embodiment, the second communication device 410 is a UE.

[0230] As an embodiment, the second communication device 410 is a network device.

[0231] As an embodiment, the second communication device 410 is a serving cell.

[0232] As an embodiment, the second communication device 410 is a TRP.

[0233] As an embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller / processor 459 are used to receive a first information set; and at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller / processor 475 are used to send a first information set.

[0234] As an embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller / processor 459 are used to monitor the third alternative set; and at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller / processor 475 are used to determine the third alternative set.

[0235] As an embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller / processor 459 are used to receive the first signaling; and at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller / processor 475 are used to send the first signaling.

[0236] As an embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller / processor 459 are used to receive a first signal; and at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller / processor 475 are used to send a first signal.

[0237] As an implementation, at least the first four of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, and the controller / processor 459 are used to send a first signal; and at least the first four of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, and the controller / processor 475 are used to receive a first signal.

[0238] Example 5

[0239] Example 5 illustrates a flow chart of a first information set, as shown in the attached Figure 5 As shown in the attached Figure 5 In the embodiment, the first node U1 and the second node N2 communicate with each other via a wireless link. It should be noted that the sequence in this embodiment does not limit the signal transmission sequence and implementation sequence in this application.

[0240] for The first node U1 , receiving a first information set in step S10; monitoring a third alternative set in step S11; receiving a first signaling in step S12; and receiving a first signal in step S13.

[0241] for The second node N2 , sending a first information set in step S20; determining a third alternative set in step S21; sending a first signaling in step S22; and sending a first signal in step S23.

[0242] In embodiment 5, the first information set is used to determine a first alternative set and a second alternative set, the first alternative set includes K1 control channel alternatives, the second alternative set includes K2 control channel alternatives, and the K1 and the K2 are both positive integers greater than 1; the third alternative set includes the first alternative set and the second alternative set; the first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any one of the control channel alternatives included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; any one of the control channel alternatives included in the first alternative set belongs to the first search search space set, any one of the control channel alternatives included in the second alternative set belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, and the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and at least one of the time-frequency resources occupied by the target control channel alternative are used to determine the first parameter; the first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal.

[0243] As an embodiment, the control channel alternatives included in the first alternative group all adopt the first aggregation level, the control channel alternatives included in the second alternative group all adopt the first aggregation level, and the control channel alternatives in the second alternative set that are associated with the control channel alternatives included in the first alternative group adopt the first aggregation level.

[0244] As a sub-embodiment of this embodiment, the first aggregation level is equal to one of 1, 2, 4, 8 or 16.

[0245] As a sub-embodiment of this embodiment, the first candidate set further includes control channel candidates using aggregation levels other than the first aggregation level.

[0246] As a sub-embodiment of this embodiment, the second candidate set further includes control channel candidates using an aggregation level other than the first aggregation level.

[0247] As a sub-embodiment of this embodiment, the first candidate group includes at least two control channel candidates respectively using different aggregation levels.

[0248] As an embodiment, the control channel alternatives included in the first alternative group all adopt the first format, the control channel alternatives included in the second alternative group all adopt the first format, and the control channel alternatives in the second alternative set that are associated with the control channel alternatives included in the first alternative group adopt the first format.

[0249] As a sub-embodiment of this embodiment, the first format is one of DCI formats 0_0, 0_1 or 0_2.

[0250] As a sub-embodiment of this embodiment, the first format is one of DCI formats 1_0, 1_1 or 1_2.

[0251] As a sub-embodiment of this embodiment, the first format is one of DCI formats 2_0, 2_1, 2_2, 2_3, 2_4 or 2_6.

[0252] As a sub-embodiment of this embodiment, the first format is one of DCI formats 3_0 or 3_1.

[0253] As a sub-embodiment of this embodiment, the first format is one of SCI (Sidelink Control Information) formats 1_A, 2_A or 2_B.

[0254] As an embodiment, the first alternative set consists of control channel alternatives located in a first time window in the first search space set, and the second alternative set consists of control channel alternatives located in a second time window in the second search space set, and the first time window and the second time window are associated.

[0255] As a sub-embodiment of this embodiment, the first information set is used to indicate the time domain position of the time domain resources occupied by the first time window.

[0256] As a sub-embodiment of this embodiment, the first information set is used to indicate the time domain position of the time domain resources occupied by the second time window.

[0257] As a sub-embodiment of this embodiment, the first information set is used to indicate the duration of the first time window in the time domain.

[0258] As a sub-embodiment of this embodiment, the first information set is used to indicate the duration of the second time window in the time domain.

[0259] As a sub-embodiment of this embodiment, the MonitoringSlotPeriodicityAndOffset field (Field) in the first information set is used to determine X1 first-class time windows, where the first time window is one of the X1 first-class time windows, and X1 is a positive integer greater than 1.

[0260] As a sub-embodiment of this embodiment, the MonitoringSlotPeriodicityAndOffset field in the first information set is used to determine X2 second-type time windows, and the second time window is one of the X2 second-type time windows, and X2 is a positive integer greater than 1.

[0261] As a subsidiary embodiment of the above two sub-embodiments, the index of the first time window in the X1 first-type time windows is the same as the index of the second time window in the X2 first-type time windows.

[0262] As a subsidiary embodiment of the above two sub-embodiments, the first information set is used to indicate the first time window from the X1 first-category time windows.

[0263] As a subsidiary embodiment of the above two sub-embodiments, the first information set is used to indicate the second time window from the X2 second-type time windows.

[0264] As a sub-embodiment of this embodiment, the first time window includes T3 time slots, only one time slot among the T3 time slots needs to monitor the control channel alternative, and T3 is a positive integer greater than 1.

[0265] As a sub-embodiment of this embodiment, the first time window includes T3 time slots, at least two of the T3 time slots need to monitor the control channel alternatives, and T3 is a positive integer greater than 1.

[0266] As a sub-embodiment of this embodiment, the second time window includes T4 time slots, only one time slot among the T4 time slots needs to monitor the control channel alternative, and T4 is a positive integer greater than 1.

[0267] As a sub-embodiment of this embodiment, the second time window includes T4 time slots, at least two of the T4 time slots need to monitor the control channel alternatives, and T4 is a positive integer greater than 1.

[0268] As a sub-embodiment of this embodiment, the first time window and the second time window overlap in the time domain.

[0269] As a sub-embodiment of this embodiment, the first time window and the second time window are orthogonal in the time domain.

[0270] As a sub-embodiment of this embodiment, the above phrase "the first time window and the second time window are associated" means that the first time window and the second time window are associated with the first search space set and the second search space set respectively, and the control channel alternatives in the first search space set and the control channel alternatives in the second search space set can be jointly monitored.

[0271] As a sub-embodiment of this embodiment, the phrase "the first time window and the second time window are associated" means that the control channel candidates in the first time window and the control channel candidates in the second time window can be jointly monitored.

[0272] As an embodiment, the first alternative group includes Q1 first-class control channel alternatives, and the Q1 first-class control channel alternatives are respectively associated with Q1 second-class control channel alternatives in the second alternative set, and Q1 is a positive integer greater than 1, and the total number of monitoring times counted for the Q1 first-class control channel alternatives is greater than Q1.

[0273] As a sub-embodiment of this embodiment, the total number of monitoring times of the Q1 first-category control channel candidates is equal to 2 times of Q1.

[0274] As a sub-embodiment of this embodiment, the above phrase that the Q1 first-class control channel alternatives are respectively associated with the Q1 second-class control channel alternatives in the second alternative set means that the Q1 first-class control channel alternatives respectively form Q1 joint control channel alternatives with the Q1 second-class control channel alternatives.

[0275] As a subsidiary embodiment of this sub-embodiment, the Q1 first-category control channel candidates each occupy Q1 blind detections.

[0276] As a subsidiary embodiment of this sub-embodiment, the Q1 second-type control channel candidates each occupy Q1 blind detections.

[0277] As a subsidiary embodiment of this sub-embodiment, the Q1 joint control channel candidates each occupy Q1 blind detections.

[0278] As a subsidiary embodiment of this sub-embodiment, the Q1 second-type control channel candidates do not occupy Q1 blind detections.

[0279] As a subsidiary embodiment of this sub-embodiment, the Q1 first-category control channel candidates each occupy 2 times Q1 blind detections.

[0280] As an embodiment, the first type of control channel candidate in the present application is a PDCCH Candidate.

[0281] As an embodiment, the second type of control channel candidate in the present application is a PDCCH Candidate.

[0282] As an embodiment, the first type of control channel candidate in the present application is a PDCCH Candidate.

[0283] As an embodiment, the first type of control channel candidate in the present application is a PSCCH Candidate.

[0284] As an embodiment, the first type of control channel in the present application may alternatively occupy a positive integer number of CCEs.

[0285] As an embodiment, the first type of control channel in the present application may alternatively occupy a positive integer number of REs greater than 1.

[0286] As an embodiment, the second type of control channel candidate in the present application is a PDCCH Candidate.

[0287] As an embodiment, the second type of control channel candidate in the present application is a PSCCH Candidate.

[0288] As an embodiment, the second type of control channel in the present application may alternatively occupy a positive integer number of CCEs.

[0289] As an embodiment, the second type of control channel in the present application may alternatively occupy a positive integer number of REs greater than 1.

[0290] As an embodiment, the quotient between K1 and K2 is used to determine the first parameter.

[0291] As a sub-embodiment of this embodiment, the first alternative set only includes the control channel alternatives included in the first alternative group and the control channel alternatives included in the second alternative group.

[0292] As a sub-embodiment of this embodiment, the first candidate group includes Q1 control channel candidates, and the second candidate group includes Q2 control channel candidates; the sum of Q1 and Q2 is equal to K1.

[0293] As a sub-embodiment of this embodiment, the K2 in this application is equal to the Q1 in this application.

[0294] As a sub-embodiment of this embodiment, the quotient between the K1 and the K2 is used to determine the index of the target control channel candidate in the first candidate set.

[0295] As an embodiment, the time domain position of the first time window is used to determine the first parameter.

[0296] As a sub-embodiment of this embodiment, the time domain position of the first time window is used as the index of the target control channel candidate in the first candidate set.

[0297] As a sub-embodiment of this embodiment, the phrase "the time domain position of the first time window" means: the position of the time slot occupied by the first time window in a frame.

[0298] As a sub-embodiment of this embodiment, the phrase "the time domain position of the first time window" means: the position of the opportunity (Occasion) occupied by the first time window in all opportunities associated with the first search space set.

[0299] As a sub-embodiment of this embodiment, the phrase "the time domain position of the first time window" means: the position of the time slot occupied by the first time window in all time slots associated with the first search space set.

[0300] As an embodiment, the time domain position of the second time window is used to determine the first parameter.

[0301] As a sub-embodiment of this embodiment, the time domain position of the second time window is used as the index of the target control channel candidate in the first candidate set.

[0302] As a sub-embodiment of this embodiment, the phrase "the time domain position of the second time window" means: the position of the time slot occupied by the second time window in a frame.

[0303] As a sub-embodiment of this embodiment, the phrase "the time domain position of the second time window" means: the position of the opportunity occupied by the second time window in all opportunities associated with the second search space set.

[0304] As a sub-embodiment of this embodiment, the phrase "the time domain position of the second time window" means: the position of the time slot occupied by the second time window in all time slots associated with the second search space set.

[0305] As an embodiment, the first signaling is a DCI.

[0306] As an embodiment, the first signaling is an SCI.

[0307] As an embodiment, the first signaling is used to indicate the time domain resources occupied by the first signal.

[0308] As an embodiment, the first signaling is used to indicate the frequency domain resources occupied by the first signal.

[0309] As an embodiment, the first signaling is used to indicate a HARQ (Hybrid Automatic Repeat reQuest) process number adopted by the first signal.

[0310] As an embodiment, the first signaling is used to indicate an MCS (Modulation and Coding Scheme) adopted by the first signal.

[0311] As an embodiment, the first signaling is used to indicate the RV (Redundancy Version) adopted by the first signal.

[0312] As an embodiment, the physical layer channel carrying the first signaling includes PDCCH.

[0313] As an embodiment, the physical layer channel carrying the first signaling includes PSCCH.

[0314] As an embodiment, the first signaling is a downlink authorization.

[0315] As an embodiment, the first signal is a wireless signal, or the first signal is a baseband signal.

[0316] As an embodiment, the physical layer channel carrying the first signal includes a PDSCH (Physical Downlink Shared Channel).

[0317] As an embodiment, the physical layer channel carrying the first signal includes a PSSCH (Physical Sidelink Shared Channel).

[0318] As an embodiment, the transmission channel carrying the first signal includes a DL-SCH (Downlink Shared Channel).

[0319] As an embodiment, the transmission channel carrying the first signal includes SL-SCH (Sidelink Shared Channel).

[0320] As an embodiment, the phrase “determining the third alternative set” means: determining the position of the time-frequency resources occupied by any control channel alternative included in the third alternative set.

[0321] As an embodiment, the phrase “determining the third candidate set” means: determining the position of REs occupied by any control channel candidate included in the third candidate set.

[0322] As an embodiment, the phrase “determining the third candidate set” means: determining an aggregation level adopted by any control channel candidate included in the third candidate set.

[0323] As an embodiment, the above phrase determines the meaning of the third alternative set including: when the two independent control channel alternatives included in the third alternative set form a joint control channel alternative, the second node N2 determines the position of the time-frequency resources occupied by the joint control channel alternative.

[0324] As an embodiment, the above phrase determining the third alternative set means that when the two independent control channel alternatives included in the third alternative set form a joint control channel alternative, the second node N2 determines the positions of REs occupied by the joint control channel alternative.

[0325] As an embodiment, the REs occupied by the first search space set and the REs occupied by the second search space set belong to two different CORESETs respectively.

[0326] As an embodiment, the REs occupied by the first search space set and the REs occupied by the second search space set belong to two different CORESET Pools respectively.

[0327] As an embodiment, the first search space set and the second search space set occupy the same number of REs.

[0328] As an embodiment, the frequency domain resources occupied by the first search space set and the frequency domain resources occupied by the second search space set are orthogonal in the frequency domain.

[0329] As an embodiment, the time domain resources occupied by the first search space set and the time domain resources occupied by the second search space set are orthogonal in the time domain.

[0330] Example 6

[0331] Example 6 illustrates another flow chart of the first information set, as shown in the attached Figure 6 As shown in the attached Figure 6 In the embodiment, the first node U3 and the second node N4 communicate via a wireless link. It should be noted that the order in this embodiment does not limit the signal transmission order and implementation order in this application. The embodiments, sub-embodiments, subsidiary embodiments, and examples in Embodiment 5 can be used in Embodiment 6, unless there is a conflict. Similarly, the embodiments, sub-embodiments, and subsidiary embodiments in Embodiment 6 can be used in Embodiment 5, unless there is a conflict.

[0332] for First node U3 , receiving a first information set in step S30; monitoring a third alternative set in step S31; receiving a first signaling in step S32; and sending a first signal in step S33.

[0333] for Second node N4 , sending a first information set in step S40; determining a third alternative set in step S41; sending a first signaling in step S42; and receiving a first signal in step S43.

[0334] In embodiment 6, the first information set is used to determine a first alternative set and a second alternative set, the first alternative set includes K1 control channel alternatives, the second alternative set includes K2 control channel alternatives, and the K1 and the K2 are both positive integers greater than 1; the third alternative set includes the first alternative set and the second alternative set; the first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any one of the control channel alternatives included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; any one of the control channel alternatives included in the first alternative set belongs to the first search search space set, any one of the control channel alternatives included in the second alternative set belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, and the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and at least one of the time-frequency resources occupied by the target control channel alternative are used to determine the first parameter; the first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal.

[0335] As an embodiment, the first signaling is an uplink authorization.

[0336] As an embodiment, the physical layer channel carrying the first signal includes a PUSCH (Physical Uplink Shared Channel).

[0337] As an embodiment, the transmission channel carrying the first signal includes UL-SCH (Uplink Shared Channel, uplink shared channel).

[0338] Example 7

[0339] Example 7 illustrates a schematic diagram of the first candidate set and the second candidate set, as shown in the attached figure. Figure 7 As shown in the attached Figure 7In the figure, the first alternative set includes K1 control channel alternatives, and the second alternative set includes K2 control channel alternatives; the K1 is greater than the K2, and the K2 control channel alternatives in the K1 control channel alternatives are respectively associated with the K2 control channel alternatives included in the second alternative set, and respectively constitute K2 joint control channel alternatives; the rectangular box filled with slashes in the figure corresponds to the K1 control channel alternatives included in the first alternative set, and the rectangular box filled with squares in the figure corresponds to the K2 control channel alternatives included in the second alternative set, and the dotted box part in the figure is the formed joint control channel alternative.

[0340] Example 8

[0341] Example 8 illustrates a schematic diagram of the first search space set and the second search space set, as shown in the attached figure. Figure 8 As shown in the attached Figure 8 In the figure, the first search space set and the second search space set are both periodically divided in the time domain; the first search space set occupies X1 first-class time windows in the time domain, and the second search space set occupies X2 second-class time windows in the time domain; the first time window in the X1 first-class time windows is associated with the second time window in the X2 first-class time windows; the control channel options in the first time window are associated with the control channel options in the second time window; the rectangular box filled with slashes in the figure corresponds to the control channel options included in the first search space set, and the rectangular box filled with squares in the figure corresponds to the control channel options included in the second search space set; the solid line box in the figure represents one first-class time window in the X1 first-class time windows, and the dotted line box in the figure represents one second-class time window in the X2 second-class time windows.

[0342] As an embodiment, the first alternative set consists of all control channel alternatives in the first time window.

[0343] As an embodiment, the second alternative set consists of all control channel alternatives in the second time window.

[0344] As an embodiment, the first candidate set consists of all control channel candidates using the first aggregation level in the first time window.

[0345] As an embodiment, the second candidate set consists of all control channel candidates using the first aggregation level in the second time window.

[0346] As an embodiment, the first search space set is a USS (UE-Specific Search Space, user equipment-specific search space).

[0347] As an embodiment, the second search space set is a USS (UE-Specific Search Space, user equipment-specific search space).

[0348] As an embodiment, the first information set is used to indicate that the first search space set and the second search space set are associated.

[0349] Example 9

[0350] Example 9 illustrates a schematic diagram of a first candidate group and a second candidate group, as shown in the attached figure. Figure 9 As shown in the attached Figure 9 In the embodiment, the first alternative set includes K1 control channel alternatives, and the K1 control channel alternatives are indexed in sequence, and the K1 control channel alternatives are indexed in sequence as control channel alternative #0 to control channel alternative #(K1-1); the second alternative set includes K2 control channel alternatives; the K1 is a positive integer greater than 1, and the K2 is a positive integer less than K1 and greater than 1; the first alternative group includes control channel alternative #0 to control channel alternative #(K2-1) among the K1 control channel alternatives, and the second alternative group includes control channel alternative #K2 to control channel alternative #(K1-1) among the K1 control channel alternatives; the control channel alternative #0 to the control channel alternative #(K2-1) included in the first alternative group are sequentially associated with the K2 control channel alternatives included in the second alternative set.

[0351] As an embodiment, the first identifier used by the first search space set is smaller than the second identifier used by the second search space set, and the K2 control channel alternatives included in the first alternative group are determined using the above method.

[0352] Example 10

[0353] Example 10 illustrates another schematic diagram of the first alternative group and the second alternative group, as shown in the attached figure. Figure 10 As shown in the attached Figure 10In the embodiment, the first alternative set includes K1 control channel alternatives, and the K1 control channel alternatives are indexed in sequence, and the K1 control channel alternatives are indexed in sequence as control channel alternative #0 to control channel alternative #(K1-1); the second alternative set includes K2 control channel alternatives; the K1 is a positive integer greater than 1, and the K2 is a positive integer less than K1 and greater than 1; the first alternative group includes control channel alternative #(K1-K2) to control channel alternative #(K1-1) among the K1 control channel alternatives, and the second alternative group includes control channel alternative #0 to control channel alternative #(K1-K2-1) among the K1 control channel alternatives; the control channel alternative #(K1-K2) to the control channel alternative #(K2-1) included in the first alternative group are sequentially associated with the K2 control channel alternatives included in the second alternative set.

[0354] As an embodiment, the first identifier adopted by the first search space set is not less than the second identifier adopted by the second search space set, and the K2 control channel alternatives included in the first alternative group are determined using the above method.

[0355] Example 11

[0356] Example 11 illustrates another schematic diagram of the first alternative group and the second alternative group, as shown in the attached figure. Figure 11 As shown in the attached Figure 11 In the figure, the first alternative set includes K1 control channel alternatives, and the K1 control channel alternatives are indexed in sequence, and the K1 control channel alternatives are indexed in sequence as control channel alternative #0 to control channel alternative #(K1-1); the second alternative set includes K2 control channel alternatives; the K1 is a positive integer greater than 1, and the K2 is a positive integer less than K1 and greater than 1; the first alternative group includes K2 control channel alternatives in the K1 control channel alternatives, and the indexes of the K2 control channel alternatives in the K1 control channel alternatives are discontinuous; a given control channel alternative is any control channel alternative in the K2 control channel alternatives; the rectangular box filled with slashes in the figure represents the control channel alternatives in the first alternative group, and the rectangular box filled with squares in the figure represents the control channel alternatives in the second alternative group.

[0357] As an embodiment, the index of the K1 control channel alternatives included in the first alternative set of the given control channel alternatives is related to the identifier of the first search space set.

[0358] As an embodiment, the index of the K1 control channel alternatives included in the first alternative set of the given control channel alternatives is related to the identifier of the second search space set.

[0359] As an embodiment, the index of the K1 control channel alternatives included in the first alternative set of the given control channel alternatives is related to the time domain position of the first time window in the present application.

[0360] As an embodiment, the index of the K1 control channel alternatives included in the first alternative set of the given control channel alternatives is related to the time domain position of the second time window in the present application.

[0361] As an embodiment, the index of the K1 control channel alternatives included in the first alternative set of the given control channel alternative is related to the frequency domain position of the frequency domain resources occupied by the given control channel alternative.

[0362] Example 12

[0363] Example 12 illustrates a schematic diagram of an application scenario, as shown in the attached Figure 12 As shown in the attached Figure 12 In the present invention, the first control resource set and the second control resource set are respectively configured to the first TRP and the second TRP of the first cell, and the first node receives PDCCH from the two TRPs at the same time; the first search space set is associated with the first control resource set, and the second search space set is associated with the second control resource set.

[0364] As an embodiment, the first TRP and the second TRP respectively use two different CORESET PoolIndex.

[0365] As an embodiment, the first TRP and the second TRP are connected via an X2 interface.

[0366] As an embodiment, there exists between the first TRP and the second TRP.

[0367] Example 13

[0368] Example 13 illustrates a structural block diagram in a first node, as shown in the attached Figure 13 As shown. Figure 13 In the embodiment, the first node 1300 includes a first receiver 1301 and a first transceiver 1302.

[0369] A first receiver 1301 receives a first information set, where the first information set is used to determine a first candidate set and a second candidate set, where the first candidate set includes K1 control channel candidates and the second candidate set includes K2 control channel candidates, where both K1 and K2 are positive integers greater than 1;

[0370] A first transceiver 1302 monitors a third candidate set, where the third candidate set includes the first candidate set and the second candidate set;

[0371] In embodiment 13, the first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any one of the control channel alternatives included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; any one of the control channel alternatives included in the first alternative set belongs to the first search space set, and any one of the control channel alternatives included in the second alternative set belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; at least one of the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and the time-frequency resources occupied by the target control channel alternative is used to determine the first parameter.

[0372] As an embodiment, the control channel alternatives included in the first alternative group all adopt the first aggregation level, the control channel alternatives included in the second alternative group all adopt the first aggregation level, and the control channel alternatives in the second alternative set that are associated with the control channel alternatives included in the first alternative group adopt the first aggregation level.

[0373] As an embodiment, the control channel alternatives included in the first alternative group all adopt the first format, the control channel alternatives included in the second alternative group all adopt the first format, and the control channel alternatives in the second alternative set that are associated with the control channel alternatives included in the first alternative group adopt the first format.

[0374] As an embodiment, the first alternative set consists of control channel alternatives located in a first time window in the first search space set, and the second alternative set consists of control channel alternatives located in a second time window in the second search space set, and the first time window and the second time window are associated.

[0375] As an embodiment, the first alternative group includes Q1 first-class control channel alternatives, and the Q1 first-class control channel alternatives are respectively associated with Q1 second-class control channel alternatives in the second alternative set, and Q1 is a positive integer greater than 1, and the total number of monitoring times counted for the Q1 first-class control channel alternatives is greater than Q1.

[0376] As an embodiment, the quotient between K1 and K2 is used to determine the first parameter.

[0377] As an embodiment, the time domain position of the first time window is used to determine the first parameter.

[0378] As an embodiment, the time domain position of the second time window is used to determine the first parameter.

[0379] As an embodiment, the first transceiver 1302 receives a first signaling, and the first transceiver 1302 receives a first signal; the first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal.

[0380] As an embodiment, the first transceiver 1302 receives a first signaling, and the first transceiver 1302 sends a first signal; the first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal.

[0381] As an embodiment, the first receiver 1301 includes at least the first four of the antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, and controller / processor 459 in Example 4.

[0382] As an embodiment, the first transceiver 1302 includes at least the first six of the antenna 452, receiver / transmitter 454, multi-antenna receive processor 458, multi-antenna transmit processor 457, receive processor 456, transmit processor 468, and controller / processor 459 in Example 4.

[0383] Example 14

[0384] Example 14 illustrates a structural block diagram in a second node, as shown in the attached Figure 14 As shown. Figure 14 In the embodiment, the second node 1400 includes a first transmitter 1401 and a second transceiver 1402.

[0385] A first transmitter 1401 sends a first information set, where the first information set is used to determine a first candidate set and a second candidate set, where the first candidate set includes K1 control channel candidates, and the second candidate set includes K2 control channel candidates, where both K1 and K2 are positive integers greater than 1.

[0386] The second transceiver 1402 determines a third candidate set, where the third candidate set includes the first candidate set and the second candidate set;

[0387] In embodiment 14, the first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any one of the control channel alternatives included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; any one of the control channel alternatives included in the first alternative set belongs to the first search space set, and any one of the control channel alternatives included in the second alternative set belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; at least one of the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and the time-frequency resources occupied by the target control channel alternative is used to determine the first parameter.

[0388] As an embodiment, the control channel alternatives included in the first alternative group all adopt the first aggregation level, the control channel alternatives included in the second alternative group all adopt the first aggregation level, and the control channel alternatives in the second alternative set that are associated with the control channel alternatives included in the first alternative group adopt the first aggregation level.

[0389] As an embodiment, the control channel alternatives included in the first alternative group all adopt the first format, the control channel alternatives included in the second alternative group all adopt the first format, and the control channel alternatives in the second alternative set that are associated with the control channel alternatives included in the first alternative group adopt the first format.

[0390] As an embodiment, the first alternative set consists of control channel alternatives located in a first time window in the first search space set, and the second alternative set consists of control channel alternatives located in a second time window in the second search space set, and the first time window and the second time window are associated.

[0391] As an embodiment, the first alternative group includes Q1 first-class control channel alternatives, and the Q1 first-class control channel alternatives are respectively associated with Q1 second-class control channel alternatives in the second alternative set, and Q1 is a positive integer greater than 1, and the total number of monitoring times counted for the Q1 first-class control channel alternatives is greater than Q1.

[0392] As an embodiment, the quotient between K1 and K2 is used to determine the first parameter.

[0393] As an embodiment, the time domain position of the first time window is used to determine the first parameter.

[0394] As an embodiment, the time domain position of the second time window is used to determine the first parameter.

[0395] As an embodiment, the second transceiver 1402 sends a first signaling, and the second transceiver 1402 sends a first signal; the first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal.

[0396] As an embodiment, the second transceiver 1402 sends a first signal, and the second transceiver 1402 receives a first signal; the first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal.

[0397] As an embodiment, the first transmitter 1401 includes at least the first four of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, and controller / processor 475 in Embodiment 4.

[0398] As an embodiment, the second transceiver 1402 includes at least the first six of the antenna 420, transmitter / receiver 418, multi-antenna transmit processor 471, multi-antenna receive processor 472, transmit processor 416, receive processor 470, and controller / processor 475 in Example 4.

[0399] Those skilled in the art will appreciate that all or part of the steps in the above method can be performed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk, or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, the various module units in the above embodiment can be implemented in the form of hardware or software functional modules. This application is not limited to any specific combination of software and hardware. The first node in this application includes but is not limited to mobile phones, tablets, laptops, network cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication equipment, transportation vehicles, vehicles, RSUs, aircraft, airplanes, drones, remotely piloted aircraft, and other wireless communication devices. The second node in this application includes but is not limited to macrocell base stations, microcell base stations, small cell base stations, home base stations, relay base stations, eNBs, gNBs, transmission and reception nodes (TRPs), GNSS, relay satellites, satellite base stations, aerial base stations, RSUs, drones, test equipment, such as transceivers that simulate some functions of a base station or signaling testers, and other wireless communication devices.

[0400] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A first node for wireless communication, characterized in that include: A first receiver receives a first information set, where the first information set is used to determine a first candidate set and a second candidate set, where the first candidate set includes K1 control channel candidates, and the second candidate set includes K2 control channel candidates, where both K1 and K2 are positive integers greater than 1; a first transceiver, monitoring a third alternative set, wherein the third alternative set includes the first alternative set and the second alternative set; The first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any control channel alternative included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; any control channel alternative in the second alternative group is not associated with any control channel alternative in the second alternative set; any control channel alternative included in the first alternative set belongs to the first search space set, and the second alternative set Any one of the control channel alternatives included in the combination belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, and the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and at least one of the time-frequency resources occupied by the target control channel alternative are used to determine the first parameter.

2. The first node according to claim 1, wherein: The control channel alternatives included in the first alternative group all adopt the first aggregation level, the control channel alternatives included in the second alternative group all adopt the first aggregation level, and the control channel alternatives in the second alternative set associated with the control channel alternatives included in the first alternative group adopt the first aggregation level.

3. The first node according to claim 1 or 2, characterized in that The control channel alternatives included in the first alternative group all adopt the first format, the control channel alternatives included in the second alternative group all adopt the first format, and the control channel alternatives in the second alternative set associated with the control channel alternatives included in the first alternative group adopt the first format.

4. The first node according to any one of claims 1 to 3, characterized in that: The first alternative set consists of control channel alternatives in the first search space set and located in a first time window, and the second alternative set consists of control channel alternatives in the second search space set and located in a second time window, and the first time window and the second time window are associated.

5. The first node according to any one of claims 1 to 4, characterized in that: The first alternative group includes Q1 first-class control channel alternatives, and the Q1 first-class control channel alternatives are respectively associated with Q1 second-class control channel alternatives in the second alternative set, where Q1 is a positive integer greater than 1, and the total number of monitoring times counted for the Q1 first-class control channel alternatives is greater than Q1.

6. The first node according to any one of claims 1 to 5, characterized in that: The quotient between the K1 and the K2 is used to determine the first parameter.

7. The first node according to any one of claims 4 to 6, characterized in that: The time domain position where the first time window is located is used to determine the first parameter.

8. The first node according to any one of claims 4 to 7, characterized in that: The time domain position where the second time window is located is used to determine the first parameter.

9. The first node according to any one of claims 1 to 8, characterized in that: The first transceiver receives a first signaling, and the first transceiver operates the first signal; the first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal; the operation is receiving, or the operation is sending.

10. A second node for wireless communication, characterized in that include: A first transmitter sends a first information set, where the first information set is used to determine a first candidate set and a second candidate set, where the first candidate set includes K1 control channel candidates, and the second candidate set includes K2 control channel candidates, where both K1 and K2 are positive integers greater than 1; The second transceiver determines a third candidate set, where the third candidate set includes the first candidate set and the second candidate set; The first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any control channel alternative included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; any control channel alternative in the second alternative group is not associated with any control channel alternative in the second alternative set; any control channel alternative included in the first alternative set belongs to the first search space set, and the second alternative set Any one of the control channel alternatives included in the combination belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, and the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and at least one of the time-frequency resources occupied by the target control channel alternative are used to determine the first parameter.

11. The second node according to claim 10, characterized in that: The control channel alternatives included in the first alternative group all adopt the first aggregation level, the control channel alternatives included in the second alternative group all adopt the first aggregation level, and the control channel alternatives in the second alternative set associated with the control channel alternatives included in the first alternative group adopt the first aggregation level.

12. The second node according to claim 10 or 11, characterized in that: The control channel alternatives included in the first alternative group all adopt the first format, the control channel alternatives included in the second alternative group all adopt the first format, and the control channel alternatives in the second alternative set associated with the control channel alternatives included in the first alternative group adopt the first format.

13. The second node according to any one of claims 10 to 12, characterized in that: The first alternative set consists of control channel alternatives in the first search space set and located in a first time window, and the second alternative set consists of control channel alternatives in the second search space set and located in a second time window, and the first time window and the second time window are associated.

14. The second node according to any one of claims 10 to 13, characterized in that: The first alternative group includes Q1 first-class control channel alternatives, and the Q1 first-class control channel alternatives are respectively associated with Q1 second-class control channel alternatives in the second alternative set, where Q1 is a positive integer greater than 1, and the total number of monitoring times counted for the Q1 first-class control channel alternatives is greater than Q1.

15. The second node according to any one of claims 10 to 14, characterized in that: The quotient between the K1 and the K2 is used to determine the first parameter.

16. The second node according to any one of claims 10 to 15, characterized in that: The time domain position where the first time window is located is used to determine the first parameter.

17. The second node according to any one of claims 10 to 16, characterized in that: The time domain position where the second time window is located is used to determine the first parameter.

18. The second node according to any one of claims 10 to 17, characterized in that: The second transceiver sends a first signal; the first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal.

19. The second node according to any one of claims 10 to 18, characterized in that: The second transceiver sends a first signaling, and the second transceiver receives a first signal; the first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal.

20. A method in a first node in wireless communication, characterized in that include: receiving a first information set, where the first information set is used to determine a first candidate set and a second candidate set, where the first candidate set includes K1 control channel candidates, and the second candidate set includes K2 control channel candidates, where both K1 and K2 are positive integers greater than 1; monitoring a third candidate set, where the third candidate set includes the first candidate set and the second candidate set; The first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any control channel alternative included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; any control channel alternative in the second alternative group is not associated with any control channel alternative in the second alternative set; any control channel alternative included in the first alternative set belongs to the first search space set, and the second alternative set Any one of the control channel alternatives included in the combination belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, and the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and at least one of the time-frequency resources occupied by the target control channel alternative are used to determine the first parameter.

21. The method in the first node according to claim 20, characterized in that: The control channel alternatives included in the first alternative group all adopt the first aggregation level, the control channel alternatives included in the second alternative group all adopt the first aggregation level, and the control channel alternatives in the second alternative set associated with the control channel alternatives included in the first alternative group adopt the first aggregation level.

22. The method in the first node according to claim 20 or 21, characterized in that: The control channel alternatives included in the first alternative group all adopt the first format, the control channel alternatives included in the second alternative group all adopt the first format, and the control channel alternatives in the second alternative set associated with the control channel alternatives included in the first alternative group adopt the first format.

23. The method in the first node according to any one of claims 20 to 22, characterized in that: The control channel candidates that can be associated all use the same control signaling format, and the payload sizes carried by the associated control channel candidates are the same.

24. The method in the first node according to any one of claims 20 to 23, characterized in that: The first alternative set consists of control channel alternatives in the first search space set and located in a first time window, and the second alternative set consists of control channel alternatives in the second search space set and located in a second time window, and the first time window and the second time window are associated.

25. The method in the first node according to any one of claims 20 to 24, characterized in that: The first alternative group includes Q1 first-class control channel alternatives, and the Q1 first-class control channel alternatives are respectively associated with Q1 second-class control channel alternatives in the second alternative set, where Q1 is a positive integer greater than 1, and the total number of monitoring times counted for the Q1 first-class control channel alternatives is greater than Q1.

26. The method in the first node according to any one of claims 20 to 25, characterized in that: In addition to being counted in one monitoring, the control channel candidate in the first candidate group is also combined with a control channel candidate in the second candidate set and counted in another monitoring.

27. The method in the first node according to any one of claims 20 to 26, characterized in that: The quotient between the K1 and the K2 is used to determine the first parameter.

28. The method in the first node according to any one of claims 20 to 27, characterized in that: The time domain position where the first time window is located is used to determine the first parameter.

29. The method in the first node according to any one of claims 20 to 28, characterized in that: The time domain position where the second time window is located is used to determine the first parameter.

30. The method in the first node according to any one of claims 20 to 29, characterized in that: include: receiving a first signaling; receiving a first signal; The first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal.

31. A method in a second node in wireless communication, characterized in that include: Sending a first information set, where the first information set is used to determine a first candidate set and a second candidate set, where the first candidate set includes K1 control channel candidates, and the second candidate set includes K2 control channel candidates, where both K1 and K2 are positive integers greater than 1; Determine a third candidate set, where the third candidate set includes the first candidate set and the second candidate set; The first alternative set includes a first alternative group and a second alternative group, the first alternative group includes a positive integer number of control channel alternatives, the second alternative group includes a positive integer number of control channel alternatives, and the first alternative group and the second alternative group are different; any control channel alternative included in the first alternative group is associated with at least one control channel alternative included in the second alternative set; any control channel alternative in the second alternative group is not associated with any control channel alternative in the second alternative set; any control channel alternative included in the first alternative set belongs to the first search space set, and the second alternative set Any one of the control channel alternatives included in the combination belongs to the second search space set, and the first search space set and the second search space set are different; the control channel alternatives included in the first alternative set are indexed in sequence, and the target control channel alternative is a control channel alternative included in the second alternative group, and the first parameter is used to determine the index of the target control channel alternative in the first alternative set; the number of control channel alternatives included in the second alternative set, the first search space set, the second search space set, and at least one of the time-frequency resources occupied by the target control channel alternative are used to determine the first parameter.

32. The method in the second node according to claim 31, characterized in that: The control channel alternatives included in the first alternative group all adopt the first aggregation level, the control channel alternatives included in the second alternative group all adopt the first aggregation level, and the control channel alternatives in the second alternative set associated with the control channel alternatives included in the first alternative group adopt the first aggregation level.

33. The method in the second node according to claim 31 or 32, characterized in that: The control channel alternatives included in the first alternative group all adopt the first format, the control channel alternatives included in the second alternative group all adopt the first format, and the control channel alternatives in the second alternative set associated with the control channel alternatives included in the first alternative group adopt the first format.

34. The method in the second node according to any one of claims 31 to 33, characterized in that: The first alternative set consists of control channel alternatives in the first search space set and located in a first time window, and the second alternative set consists of control channel alternatives in the second search space set and located in a second time window, and the first time window and the second time window are associated.

35. The method in the second node according to any one of claims 31 to 34, characterized in that: The first alternative group includes Q1 first-class control channel alternatives, and the Q1 first-class control channel alternatives are respectively associated with Q1 second-class control channel alternatives in the second alternative set, where Q1 is a positive integer greater than 1, and the total number of monitoring times counted for the Q1 first-class control channel alternatives is greater than Q1.

36. The method in the second node according to any one of claims 31 to 35, characterized in that: The quotient between the K1 and the K2 is used to determine the first parameter.

37. The method in the second node according to any one of claims 31 to 36, characterized in that: The time domain position where the first time window is located is used to determine the first parameter.

38. The method in the second node according to any one of claims 31 to 37, characterized in that: The time domain position where the second time window is located is used to determine the first parameter.

39. The method in the second node according to any one of claims 31 to 38, characterized in that: include: Sending a first signaling; sending a first signal; The first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal.

40. The method in the second node according to any one of claims 31 to 39, characterized in that: include: Sending a first signaling; receiving a first signal; The first signaling occupies one or more control channel alternatives in the third alternative set, and the first signaling is used to schedule the first signal.

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