A method and device used in a node for wireless communication

Abstract

The present application discloses a method and device used in a node for wireless communication. The first node first sends a first signaling, and sends K1 sub-signals and K1 signals; the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling. The present application introduces a mechanism of repeated transmission, which ensures the robustness of the secondary link transmission without increasing excessive signaling overhead, thereby improving the overall performance of the system.

Description

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

[0002] -- Filing date of original application: October 17, 2019

[0003] --Original application number: 201910985802.5

[0004] --Title of the invention of the original application: A method and device used in a node for wireless communication Technical Field

[0005] The present application relates to a transmission method and device in a wireless communication system, and in particular to a transmission method and device related to a sidelink in wireless communication. Background Art

[0006] In the future, the application scenarios of wireless communication systems will become more and more diversified, and different application scenarios will put forward different performance requirements for the system. In order to meet the different performance requirements of various application scenarios, the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 plenary meeting decided to study the new radio (NR) (or Fifth Generation, 5G) technology, and the NR WI (Work Item) was passed at the 3GPP RAN #75 plenary meeting, and the standardization work on NR began.

[0007] In response to the rapidly developing vehicle-to-everything (V2X) business, 3GPP has launched standard formulation and research work under the NR framework. At present, 3GPP has completed the formulation of requirements for 5G V2X services and written them into the standard TS22.886. 3GPP has defined four major application scenario groups (Use Case Groups) for 5G V2X services, including: automatic platooning driving (Vehicles Platnooning), support for extended sensing (Extended Sensors), semi- / full-automatic driving (Advanced Driving) and remote driving (Remote Driving). Research on NR-based V2X technology has been launched at the 3GPP RAN#80 plenary meeting. At the same time, at the RAN1#98 meeting, Two-Stage SCI (Sidelink Control Information) was supported to improve the transmission performance on the sidelink. Summary of the invention

[0008] In future V2X systems, more types of information will be fed back on the secondary link, such as supporting multiple services such as eMBB (Enhance Mobile Broadband) and URLLC (Ultra Reliable and Low Latency Communication) on the secondary link. Repetition is an effective way to improve transmission robustness, especially to improve the performance of URLLC control channels. Combined with the proposal of two-level SCI, how to reasonably and efficiently transmit secondary link control information in the two-level SCI scenario needs to be redesigned.

[0009] In response to the above problems, the present application discloses a solution. It should be noted that in the above problem description, V2X is only used as an example of an application scenario of the solution provided by this application; this application is also applicable to scenarios such as cellular networks to achieve technical effects similar to those in V2X. Similarly, this application is also applicable to scenarios where the same type of control information is transmitted multiple times to achieve technical effects similar to those in two-level SCI scenarios. In addition, the use of a unified solution for different scenarios (including but not limited to V2X scenarios and non-V2X scenarios) can also help reduce hardware complexity and costs.

[0010] It should be further explained that, in the absence of conflict, the embodiments and features in the embodiments in the first node of the present application can be applied to the second node or the third node; conversely, the embodiments and features in the embodiments in the second node of the present application can be applied to the first node, or the embodiments and features in the embodiments in the third node of the present application can be applied to the first node. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other.

[0011] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0012] Sending a first signaling;

[0013] Sending K1 sub-signals and K1 signals, where K1 is an integer greater than 1;

[0014] Among them, the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling.

[0015] As an embodiment, the essence of the above method is that: the first signaling is a first-level SCI, the K1 sub-signals are second-level SCIs, and only the second-level SCI is repeatedly transmitted.

[0016] As an embodiment, the advantage of the above method is that: when the first signaling and K1 sub-signals are used for scheduling the same TB (Tranmission Block), only the K1 sub-signals are repeatedly sent to improve the robustness of the corresponding control information part; and the first signaling can increase the aggregation level (Aggregation Level) to improve the robustness, thereby avoiding repeated transmission of the entire two-level SCI and avoiding excessive signaling overhead.

[0017] As an embodiment, another benefit of the above method is that when the first signaling is not sent repeatedly, the receiving end of the first signaling can complete the demodulation of the first signaling in advance. When this scheme is used for multicast, the above method can help the receiving end know in advance whether it is necessary to further demodulate the second-level SCI, thereby reducing the complexity of the receiving end and unnecessary detection overhead.

[0018] According to one aspect of the present application, the above method is characterized in that the K1 sub-signals are respectively associated with the K1 signals, a given sub-signaling is any one of the K1 sub-signals, the given sub-signaling is associated with a given signal among the K1 signals, and the given sub-signaling is used to indicate the redundant version adopted by the given signal.

[0019] As an embodiment, the above method has the advantage that RV (Redundency Version) is dynamically indicated through the second-level SCI, thereby increasing the flexibility of scheduling and the performance of repeated transmission.

[0020] According to one aspect of the present application, the above method is characterized in that the first signaling is used to indicate a first identifier, and the first identifier is used to determine an initial value of a scrambling sequence (Scrambling Sequence) used by each of the K1 signals.

[0021] As an embodiment, the advantage of the above method is that: putting the first identifier into the first-level SCI facilitates the receiving end to determine as early as possible whether it is necessary to subsequently demodulate the K1 sub-signals.

[0022] According to one aspect of the present application, the above method is characterized in that any one of the K1 sub-signals carries a first geographical identifier, and the geographical location of the first node is used to determine the first geographical identifier.

[0023] As an embodiment, the advantage of the above method is that the first geographical identifier is placed in the second-level SCI, and for a terminal that does not need to further decode the second-level SCI, the detection related to the first geographical identifier can be ignored to reduce the complexity of the terminal.

[0024] According to one aspect of the present application, the above method is characterized in that the K1 sub-signalings are respectively associated with the K1 signals; the time-frequency resources occupied by the K1 signals belong to K1 time-frequency resource pools respectively, and the first signaling is used to determine the K1 time-frequency resource pools; the first sub-signaling is one of the K1 sub-signalings, and the first signal is a signal among the K1 signals that is associated with the first sub-signaling, the time-frequency resources occupied by the first sub-signaling and the time-frequency resources occupied by the first signal belong to the same time-frequency resource pool among the K1 time-frequency resource pools, and any two time-frequency resource pools among the K1 time-frequency resource pools are orthogonal in the time-frequency domain; the demodulation reference signal associated with the first sub-signaling is the same as the demodulation reference signal associated with the first signal.

[0025] According to one aspect of the present application, the above method is characterized in that:

[0026] receiving a third signaling;

[0027] Sending a fourth signaling in a target time unit;

[0028] Among them, the information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals respectively occupy K1 first-class time units, and the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time unit, and the second time unit is a second-class time unit located latest in the time domain among the K1 second-class time units; the first time unit is a second-class time unit among the K1 second-class time units and outside the second time unit; the first time unit is used to determine the target time unit; the recipient of the fourth signaling includes a third node, the recipient of the first signaling includes a second node, and the third node and the second node are not co-located; the third signaling is used to determine that the first bit block is correctly received.

[0029] As an embodiment, the advantage of the above method is that when the second-level SCI and the corresponding data are both transmitted in a repeated manner, the feedback on the secondary link and the feedback on the cellular link for the first bit block can be sent in advance without waiting until the last time, thereby reducing delays and improving transmission performance.

[0030] According to one aspect of the present application, the above method is characterized in that it includes:

[0031] receiving a second signaling;

[0032] The second signaling is used to indicate K1 candidate time-frequency resource sets, and the K1 candidate time-frequency resource sets are used for transmission of the K1 signals respectively.

[0033] As an embodiment, the benefit of the above method is that the second signaling is used to indicate the time-frequency resources occupied by the V2X transmitter when sending data, corresponding to the transmission of the PSSCH controlled by the network side.

[0034] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0035] receiving a first signaling;

[0036] receiving K1 sub-signals and K1 signals, where K1 is an integer greater than 1;

[0037] Among them, the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling.

[0038] According to one aspect of the present application, the above method is characterized in that the K1 sub-signals are respectively associated with the K1 signals, a given sub-signaling is any one of the K1 sub-signals, the given sub-signaling is associated with a given signal among the K1 signals, and the given sub-signaling is used to indicate the redundant version adopted by the given signal.

[0039] According to one aspect of the present application, the above method is characterized in that the first signaling is used to indicate a first identifier, and the first identifier is used to determine an initial value of a scrambling code sequence used by each of the K1 signals.

[0040] According to one aspect of the present application, the above method is characterized in that any one of the K1 sub-signals carries a first geographical identifier, and the geographical location of the sender of the first signaling is used to determine the first geographical identifier.

[0041] According to one aspect of the present application, the above method is characterized in that the K1 sub-signalings are respectively associated with the K1 signals; the time-frequency resources occupied by the K1 signals belong to K1 time-frequency resource pools respectively, and the first signaling is used to determine the K1 time-frequency resource pools; the first sub-signaling is one of the K1 sub-signalings, and the first signal is a signal among the K1 signals that is associated with the first sub-signaling, the time-frequency resources occupied by the first sub-signaling and the time-frequency resources occupied by the first signal belong to the same time-frequency resource pool among the K1 time-frequency resource pools, and any two time-frequency resource pools among the K1 time-frequency resource pools are orthogonal in the time-frequency domain; the demodulation reference signal associated with the first sub-signaling is the same as the demodulation reference signal associated with the first signal.

[0042] According to one aspect of the present application, the above method is characterized in that it includes:

[0043] Sending a third signaling;

[0044] Among them, the information bits carried by the third signaling are used to generate a fourth signaling; the receiver of the third signaling includes a first node, and the first node sends the fourth signaling in a target time unit; the K1 signals respectively occupy K1 first-class time units, and the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time unit, and the second time unit is a second-class time unit located in the latest time domain among the K1 second-class time units; the first time unit is a second-class time unit among the K1 second-class time units and outside the second time unit; the first time unit is used to determine the target time unit; the receiver of the fourth signaling includes a third node, and the third node and the second node are not co-located; the third signaling is used to determine that the first bit block is correctly received.

[0045] The present application discloses a method in a third node used for wireless communication, characterized by comprising:

[0046] Sending a second signaling;

[0047] receiving a fourth signaling in a target time unit;

[0048] Among them, the second signaling is used to indicate K1 candidate time-frequency resource sets, and the K1 candidate time-frequency resource sets are used for the transmission of K1 signals respectively; the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the receiver of the second signaling includes a first node, the first node sends a first signaling, and the first node sends K1 sub-signals and the K1 signals, and K1 is an integer greater than 1; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling; the first node receives the third signaling and sends the fourth signaling in the target time unit; the information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals occupy K1 first-type time units respectively, the K1 first-type time units are respectively related to K1 second-type time units, the third signaling occupies the first time unit, and the second time unit is the latest second-type time unit in the time domain among the K1 second-type time units; the first time unit is a second-type time unit in the K1 second-type time units and outside the second time unit; the first time unit is used to determine the target time unit; the recipients of the first signaling include the second node, and the third node and the second node are not co-located; the third signaling is used to determine that the first bit block is correctly received.

[0049] According to one aspect of the present application, the above method is characterized in that the K1 sub-signals are respectively associated with the K1 signals, a given sub-signaling is any one of the K1 sub-signals, the given sub-signaling is associated with a given signal among the K1 signals, and the given sub-signaling is used to indicate the redundant version adopted by the given signal.

[0050] According to one aspect of the present application, the above method is characterized in that the first signaling is used to indicate a first identifier, and the first identifier is used to determine an initial value of a scrambling code sequence used by each of the K1 signals.

[0051] According to one aspect of the present application, the above method is characterized in that any one of the K1 sub-signals carries a first geographical identifier, and the geographical location of the first node is used to determine the first geographical identifier.

[0052] According to one aspect of the present application, the above method is characterized in that the K1 sub-signalings are respectively associated with the K1 signals; the time-frequency resources occupied by the K1 signals belong to K1 time-frequency resource pools respectively, and the first signaling is used to determine the K1 time-frequency resource pools; the first sub-signaling is one of the K1 sub-signalings, and the first signal is a signal among the K1 signals that is associated with the first sub-signaling, the time-frequency resources occupied by the first sub-signaling and the time-frequency resources occupied by the first signal belong to the same time-frequency resource pool among the K1 time-frequency resource pools, and any two time-frequency resource pools among the K1 time-frequency resource pools are orthogonal in the time-frequency domain; the demodulation reference signal associated with the first sub-signaling is the same as the demodulation reference signal associated with the first signal.

[0053] The present application discloses a first node used for wireless communication, characterized by comprising:

[0054] A first transceiver sends a first signaling;

[0055] A second transceiver sends K1 sub-signals and K1 signals, where K1 is an integer greater than 1;

[0056] Among them, the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling.

[0057] The present application discloses a second node used for wireless communication, characterized by comprising:

[0058] A first receiver receives a first signaling;

[0059] A third transceiver receives K1 sub-signals and K1 signals, where K1 is an integer greater than 1;

[0060] Among them, the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling.

[0061] The present application discloses a third node used for wireless communication, characterized by comprising:

[0062] A first transmitter sends a second signaling;

[0063] A second receiver receives a fourth signaling in a target time unit;

[0064] Among them, the second signaling is used to indicate K1 candidate time-frequency resource sets, and the K1 candidate time-frequency resource sets are used for the transmission of K1 signals respectively; the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the receiver of the second signaling includes a first node, the first node sends a first signaling, and the first node sends K1 sub-signals and the K1 signals, and K1 is an integer greater than 1; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling; the first node receives the third signaling and sends the fourth signaling in the target time unit; the information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals occupy K1 first-type time units respectively, the K1 first-type time units are respectively related to K1 second-type time units, the third signaling occupies the first time unit, and the second time unit is the latest second-type time unit in the time domain among the K1 second-type time units; the first time unit is a second-type time unit in the K1 second-type time units and outside the second time unit; the first time unit is used to determine the target time unit; the recipients of the first signaling include the second node, and the third node and the second node are not co-located; the third signaling is used to determine that the first bit block is correctly received.

[0065] As an embodiment, compared with the traditional solution, this application has the following advantages:

[0066] -. When the first signaling and K1 sub-signals are used for scheduling the same TB (Tranmission Block), only the K1 sub-signals are repeatedly sent to improve the robustness of the corresponding control information part; and the first signaling can be improved by increasing the aggregation level (Aggregation Level) to improve the robustness, thereby avoiding repeated transmission of the entire two-level SCI and avoiding excessive signaling overhead;

[0067] -. When the first signaling is not repeatedly sent, the receiving end of the first signaling can complete the demodulation of the first signaling in advance. When this solution is used for multicast, the above method can help the receiving end know in advance whether it is necessary to further demodulate the second-level SCI, thereby reducing the complexity of the receiving end and unnecessary detection overhead;

[0068] -. Dynamically indicating the RV (Redundency Version) through the second-level SCI increases the flexibility of scheduling and the performance of repeated transmission; and placing the first geographical identifier in the second-level SCI. For terminals that do not need to further decode the second-level SCI, the detection related to the first geographical identifier can be ignored to reduce the complexity of the terminal;

[0069] -. The first identifier is placed in the first-level SCI to facilitate the receiving end to determine as early as possible whether it is necessary to subsequently demodulate the K1 sub-signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0071] Figure 1 A processing flow chart of a first node according to an embodiment of the present application is shown;

[0072] Figure 2 A schematic diagram of a network architecture according to an embodiment of the present application is shown;

[0073] Figure 3 A schematic diagram showing an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0074] 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;

[0075] Figure 5 A flowchart of first signaling according to an embodiment of the present application is shown;

[0076] Figure 6 A flowchart of a third signaling according to an embodiment of the present application is shown;

[0077] Figure 7 A schematic diagram showing K1 sub-signals and K1 signals according to an embodiment of the present application is shown;

[0078] Figure 8 A schematic diagram showing a control information set according to an embodiment of the present application is shown;

[0079] Fig. 9 A schematic diagram of a demodulation reference signal according to an embodiment of the present application is shown;

[0080] Fig.10 A schematic diagram showing third signaling and fourth signaling according to an embodiment of the present application is shown;

[0081] Fig.11 A structural block diagram used in a first node according to an embodiment of the present application is shown;

[0082] Fig.12 A structural block diagram used in a second node according to an embodiment of the present application is shown;

[0083] Fig.13 A structural block diagram used in a third node according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0084] 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, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

[0085] Example 1

[0086] Embodiment 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 illustrated example 100, each box represents a step. In Embodiment 1, the first node in the present application sends a first signaling in step 101, and sends K1 sub-signals and K1 signals in step 102, where K1 is an integer greater than 1.

[0087] In Example 1, the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling.

[0088] As an embodiment, the first signaling is an SCI.

[0089] As an embodiment, any one of the K1 sub-signals is an SCI.

[0090] As an embodiment, the first signaling carries a first-stage SCI, and the K1 sub-signals all carry a second-stage SCI.

[0091] As an embodiment, the first signaling and the K1 sub-signals are both used for scheduling of the same TB (Transmission Block).

[0092] As a sub-embodiment of this embodiment, the first bit block is used to generate the TB.

[0093] As an embodiment, the first bit block is used to generate a TB.

[0094] As an embodiment, the first bit block includes a positive integer number of bits.

[0095] As an embodiment, the physical layer channel carrying the first signaling includes PSCCH (Physical Sidelink Control Channel).

[0096] As an embodiment, the physical layer channel carrying any one of the K1 sub-signals includes a PSSCH (Physical Sidelink Shared Channel).

[0097] As an embodiment, the physical layer channel carrying any one of the K1 sub-signals includes PSCCH.

[0098] As an embodiment, the physical layer channel carrying any one of the K1 signals includes PSSCH.

[0099] As an embodiment, the first signaling is used to indicate the time domain resources occupied by any one of the K1 sub-signals.

[0100] As an embodiment, the first signaling is used to indicate the frequency domain resources occupied by any one of the K1 sub-signals.

[0101] As an embodiment, the first signaling is used to indicate the time domain resources and frequency domain resources occupied by any one of the K1 sub-signals.

[0102] As an implementation, the phrase that the first signaling and any one of the K1 sub-signals are associated with the first bit block means that the first signaling and the K1 sub-signals are commonly used to schedule the transmission of the first bit block.

[0103] As an implementation, the above phrase "the first signaling and any one of the K1 sub-signals are associated with the first bit block" means that the first signaling is used to determine the frequency domain resources occupied by the K1 signals, and the K1 sub-signals are respectively used to indicate the time domain resources occupied by the K1 signals.

[0104] As an implementation, the above phrase "the first signaling and any one of the K1 sub-signals are associated with the first bit block" means that the first signaling is used to determine the time domain resources occupied by the K1 signals, and the K1 sub-signals are respectively used to indicate the frequency domain resources occupied by the K1 signals.

[0105] As an embodiment, the K1 signals share a HARQ (Hybrid Automatic RepeatreQuest) process number.

[0106] As a sub-embodiment of this embodiment, any one of the K1 sub-signals includes the HARQ process number.

[0107] As a sub-embodiment of this embodiment, any one of the K1 sub-signals indicates a same HARQ process number.

[0108] As an embodiment, the first signaling is used to indicate the HARQ process number adopted by the first bit block.

[0109] As an embodiment, the K1 sub-signals are respectively associated with the K1 signals.

[0110] As a sub-embodiment of this embodiment, the K1 sub-signals are respectively used to indicate the K1 signals.

[0111] As a sub-embodiment of this embodiment, the K1 sub-signals all carry a first information set, and the first information set is unchanged for the K1 signals.

[0112] As a sub-embodiment of this embodiment, the second sub-signaling is the earliest sub-signaling in the time domain among the K1 sub-signals, the second sub-signaling is associated with the earliest signal in the time domain among the K1 signals, and the second sub-signaling is used to indicate that the earliest signal is the initial transmission for the first bit block.

[0113] As a sub-embodiment of this embodiment, the third sub-signaling is a sub-signaling other than the earliest sub-signaling in the time domain among the K1 sub-signals, and the third sub-signaling is associated with the target signal among the K1 signals, and the third sub-signaling is used to indicate that the target signal is a repetition transmission of the first bit block.

[0114] As a sub-embodiment of this embodiment, the given sub-signaling and the target sub-signaling are any two different sub-signals among the K1 sub-signals, and the given sub-signaling and the target sub-signaling are respectively associated with the given signal and the target signal among the K1 signals; when the given sub-signaling is earlier than the target sub-signaling in the time domain, the given signal is earlier than the target signal in the time domain.

[0115] As an embodiment, the first signaling is used for channel sensing (Channel Sensing) of a terminal other than the first node.

[0116] As an embodiment, the recipient of the first signaling includes a second node, and the second node receives the first signaling through blind detection.

[0117] As an embodiment, the receiver of the first signaling includes a second node, and the second node knows the locations of the time-frequency resources respectively occupied by the K1 sub-signals when receiving the K1 sub-signals.

[0118] As an embodiment, the receiver of the first signaling includes a second node, and the second node does not need to perform blind detection when receiving the K1 sub-signals.

[0119] As an embodiment, the receiver of the first signaling includes a second node, and the second node needs to perform blind detection when receiving the first signaling.

[0120] As an embodiment, the time domain resources occupied by the first signaling and the time resources occupied by the K1 sub-signals all belong to a first time window, and the first time window includes M1 consecutive time slots, where M1 is a positive integer greater than 1.

[0121] As an embodiment, any one of the K1 sub-signals is encoded using polar code.

[0122] As an embodiment, the first signaling is transmitted on a secondary link.

[0123] As an embodiment, any one of the K1 sub-signals is transmitted on the secondary link.

[0124] As an embodiment, any one of the K1 signals is transmitted on the secondary link.

[0125] As an embodiment, the value of K1 is fixed.

[0126] As an embodiment, the value of K1 changes dynamically.

[0127] As an embodiment, the value of K1 is configured through higher layer signaling.

[0128] As an embodiment, the value of K1 is configured through physical layer signaling.

[0129] As an embodiment, the time domain resources occupied by the K1 sub-signals all belong to a first time window, the first time window includes M1 continuous time slots, and the value of K1 is related to the value of M1.

[0130] As an embodiment, the secondary link refers to a wireless link between terminals.

[0131] As an embodiment, the cellular link described in the present application is a wireless link between a terminal and a base station.

[0132] As an embodiment, the secondary link in the present application corresponds to PC (Proximity Communication) 5 port.

[0133] As an embodiment, the cellular link in the present application corresponds to the Uu port.

[0134] As an embodiment, the secondary link in the present application is used for V2X communication.

[0135] As an embodiment, the cellular link in the present application is used for cellular communication.

[0136] As an embodiment, the phrase that the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal means that there is no RE that belongs to two of the K1 sub-signals at the same time.

[0137] As an embodiment, the phrase that the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal means that there is no multi-carrier symbol that simultaneously belongs to the time domain resources respectively occupied by two of the K1 sub-signals.

[0138] As an embodiment, the multi-carrier symbol described in the present application is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0139] As an embodiment, the multi-carrier symbol described in the present application is a SC-FDMA (Single-Carrier Frequency Division Multiple Access) symbol.

[0140] As an embodiment, the multi-carrier symbol in the present application is a FBMC (Filter Bank MultiCarrier) symbol.

[0141] As an embodiment, the multi-carrier symbol described in the present application is an OFDM symbol including a CP (Cyclic Prefix).

[0142] As an embodiment, the multi-carrier symbol described in the present application is a DFT-s-OFDM (Discrete Fourier Transform Spreading Orthogonal Frequency Division Multiplexing) symbol including a CP.

[0143] Example 2

[0144] Example 2 illustrates a schematic diagram of a network architecture, as shown in the attached Figure 2 shown.

[0145] Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in the attached Figure 2 shown.

[0146] Attached Figure 2A diagram of a network architecture 200 for 5G NR, LTE (Long-Term Evolution) and LTE-A (Long-Term Evolution Advanced) systems is illustrated. The 5G NR or LTE network architecture 200 may be referred to as a 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS / EPS 200 may include one or more UEs (User Equipment) 201, a UE 241 for V2X communication with the UE 201, an NG-RAN (Next Generation Radio Access Network) 202, a 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, an HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and an Internet service 230. The 5GS / EPS may be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown, 5GS / EPS provides packet-switched services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol terminations toward UE 201. gNB 203 can be connected to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a TRP (transmitting receiving node), or some other suitable term. gNB 203 provides an access point to 5GC / EPC 210 for UE 201. Examples of UE 201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop computer, 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 Internet of Things device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similarly functional device.A person skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term. gNB203 is connected to 5GC / EPC210 via an S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF213. MME / AMF / SMF211 is the control node that handles the signaling between UE201 and 5GC / EPC210. ​​In general, MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocal) packets are transmitted through S-GW / UPF212, which itself is connected to P-GW / UPF213. P-GW provides UE IP address allocation and other functions. P-GW / UPF213 is connected to Internet services 230. Internet services 230 include operator-corresponding Internet protocol services, which may specifically include Internet, intranet, IMS (IP Multimedia Subsystem) and packet switching streaming services.

[0147] As an embodiment, the UE201 corresponds to the first node in the present application.

[0148] As an embodiment, the UE241 corresponds to the second node in the present application.

[0149] As an embodiment, the gNB203 corresponds to the third node in this application.

[0150] As an embodiment, the air interface between the UE201 and the gNB203 is a Uu interface.

[0151] As an embodiment, the air interface between the UE201 and the UE241 is a PC-5 interface.

[0152] As an embodiment, the wireless link between the UE201 and the gNB203 is a cellular link.

[0153] As an embodiment, the wireless link between the UE201 and the UE241 is a secondary link.

[0154] As an embodiment, the first node in the present application is a terminal within the coverage of the gNB203.

[0155] As an embodiment, the second node in the present application is a terminal within the coverage of the gNB203.

[0156] As an embodiment, the second node in the present application is a terminal outside the coverage of the gNB203.

[0157] As an embodiment, unicast transmission is supported between the UE201 and the UE241.

[0158] As an embodiment, broadcast transmission is supported between the UE201 and the UE241.

[0159] As an embodiment, multicast transmission is supported between the UE201 and the UE241.

[0160] As an embodiment, the first node and the second node belong to a V2X pair.

[0161] As an embodiment, the first node is a car.

[0162] As an embodiment, the first node is a vehicle.

[0163] As an embodiment, the first node is a RSU (Road Side Unit).

[0164] As an embodiment, the first node is a group head of a terminal group.

[0165] As an embodiment, the third node is a base station.

[0166] As an embodiment, the third node is a serving cell.

[0167] As an embodiment, the second node is a vehicle.

[0168] As an embodiment, the second node is a car.

[0169] As an embodiment, the second node is an RSU.

[0170] As an embodiment, the second node is a group header (Group Header) of a terminal group.

[0171] As an embodiment, the first node has positioning capability.

[0172] As an embodiment, the second node has positioning capability.

[0173] As an embodiment, the first node has GPS (Global Positioning System) capability.

[0174] As an embodiment, the second node has GPS capability.

[0175] Example 3

[0176] Embodiment 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 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 of the control plane 300 for a first communication node device (UE, gNB or RSU in V2X) and a second communication node device (gNB, UE or RSU in V2X), or between two UEs is shown with 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 as PHY301 in this article. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the first communication node device and the second communication node device and the two UEs through PHY301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a 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, and provides support for inter-zone mobility of the first communication node device between 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 layer 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 used 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 a SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS flows and data radio bearers (DRBs) to support the diversity of services. 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.).

[0177] As an example, Figure 3 The wireless protocol architecture in is applicable to the first node in this application.

[0178] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0179] As an example, Figure 3 The wireless protocol architecture in is applicable to the third node in this application.

[0180] As an embodiment, the first signaling is generated in the PHY301 or the PHY351.

[0181] As an embodiment, the first signaling is generated by the MAC352 or the MAC302.

[0182] As an embodiment, the first signaling is generated in the RRC306.

[0183] As an embodiment, any sub-signaling among the K1 sub-signals is generated in the PHY301 or the PHY351.

[0184] As an embodiment, any sub-signaling among the K1 sub-signals is generated by the MAC352 or the MAC302.

[0185] As an embodiment, any sub-signaling among the K1 sub-signals is generated in the RRC306.

[0186] As an embodiment, any one of the K1 signals is generated by the PHY301 or the PHY351.

[0187] As an embodiment, any one of the K1 signals is generated by the MAC352 or the MAC302.

[0188] As an embodiment, the third signaling is generated by the PHY301 or the PHY351.

[0189] As an embodiment, the third signaling is generated by the MAC352 or the MAC302.

[0190] As an embodiment, the fourth signaling is generated by the PHY301 or the PHY351.

[0191] As an embodiment, the fourth signaling is generated by the MAC352 or the MAC302.

[0192] As an embodiment, the second signaling is generated in the PHY301 or the PHY351.

[0193] As an embodiment, the second signaling is generated by the MAC352 or the MAC302.

[0194] As an embodiment, the second signaling is generated in the RRC306.

[0195] Example 4

[0196] Embodiment 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.

[0197] 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.

[0198] 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 .

[0199] In transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functionality of the L2 layer. In 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), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing 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 domain and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation on the time-domain multi-carrier 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.

[0200] In the 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 through 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 and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, wherein the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any spatial stream destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving 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 codes and data. The memory 460 may be referred to as a computer-readable medium. In the transmission from the second communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the 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 L3 for L3 processing.

[0201] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, a data source 467 is used 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 function 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, and implements L2 layer functions for user plane and control plane. The controller / processor 459 is also responsible for the retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

[0202] In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the reception function at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 can be associated with a memory 476 storing program codes and data. The memory 476 can be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the UE 450. Upper layer packets from controller / processor 475 may be provided to the core network.

[0203] 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, and the first communication device 450 apparatus at least: sends a first signaling; and sends K1 sub-signals and K1 signals, wherein K1 is an integer greater than 1; a first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling.

[0204] 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, and the action includes: sending a first signaling; and sending K1 sub-signals and K1 signals, wherein K1 is an integer greater than 1; a first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling.

[0205] As an embodiment, the second communication device 410 device includes: at least one processor and at least one memory, the at least one memory includes 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 device at least: receives a first signaling; and receives K1 sub-signals and K1 signals, wherein K1 is an integer greater than 1; a first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling.

[0206] As an embodiment, the second communication device 410 apparatus 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, and the action includes: receiving a first signaling; and receiving K1 sub-signals and K1 signals, wherein K1 is an integer greater than 1; a first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling.

[0207] As an embodiment, the second communication device 410 device includes: at least one processor and at least one memory, the at least one memory includes 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 device at least: sends a second signaling; and receives a fourth signaling in a target time unit; the second signaling is used to indicate K1 candidate time-frequency resource sets, and the K1 candidate time-frequency resource sets are used for the transmission of K1 signals respectively; the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the receiver of the second signaling includes a first node, the first node sends a first signaling, and the first node sends K1 sub-signals and the K1 signal, and the K1 is an integer greater than 1; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and the Any one of the K1 sub-signals is a dynamic signaling; the first node receives the third signaling and sends the fourth signaling in the target time unit; the information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals respectively occupy K1 first-class time units, and the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time unit, and the second time unit is the latest second-class time unit in the time domain among the K1 second-class time units; the first time unit is a second-class time unit among the K1 second-class time units and outside the second time unit; the first time unit is used to determine the target time unit; the recipient of the first signaling includes a second node, and the third node and the second node are not co-located; the third signaling is used to determine that the first bit block is correctly received.

[0208] As an embodiment, the second communication device 410 apparatus 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: sending a second signaling; and receiving a fourth signaling in a target time unit; the second signaling is used to indicate K1 candidate time-frequency resource sets, the K1 candidate time-frequency resource sets are used for the transmission of K1 signals respectively; a first bit block is used to generate any one of the K1 signals, the first bit block includes a positive integer number of bits; a receiver of the second signaling includes a first node, the first node sends a first signaling, and the first node sends K1 sub-signals and the K1 signal, the K1 is an integer greater than 1; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the K1 sub-signaling The time-frequency resources occupied by any two sub-signals in the signal are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling; the first node receives the third signaling and sends the fourth signaling in the target time unit; the information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals occupy K1 first-type time units respectively, and the K1 first-type time units are respectively related to K1 second-type time units, the third signaling occupies the first time unit, and the second time unit is the latest second-type time unit in the time domain among the K1 second-type time units; the first time unit is a second-type time unit in the K1 second-type time units and outside the second time unit; the first time unit is used to determine the target time unit; the recipient of the first signaling includes the second node, and the third node and the second node are not co-located; the third signaling is used to determine that the first bit block is correctly received.

[0209] As an embodiment, the first communication device 450 corresponds to the first node in this application.

[0210] As an embodiment, the second communication device 410 corresponds to the second node in this application.

[0211] As an embodiment, the second communication device 410 corresponds to the third node in this application.

[0212] As an embodiment, the first communication device 450 is a UE.

[0213] As an embodiment, the second communication device 410 is a UE.

[0214] As an embodiment, the second communication device 410 is a base station.

[0215] As an implementation, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, and the controller / processor 459 is used to send a first signaling; and at least one of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, and the controller / processor 475 is used to receive a first signaling.

[0216] As an implementation, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, and the controller / processor 459 is used to send K1 sub-signals and K1 signals; and at least one of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, and the controller / processor 475 is used to receive K1 sub-signals and K1 signals.

[0217] As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, and the controller / processor 459 is used to receive a third signaling; and at least one of the antenna 420, the transmitter 418, the multi-antenna transmitting processor 471, the transmitting processor 416, and the controller / processor 475 is used to send a third signaling.

[0218] As an implementation, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, and the controller / processor 459 is used to send a fourth signaling in a target time unit; and at least one of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, and the controller / processor 475 is used to receive a fourth signaling in a target time unit.

[0219] As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, and the controller / processor 459 is used to receive a second signaling; and at least one of the antenna 420, the transmitter 418, the multi-antenna transmitting processor 471, the transmitting processor 416, and the controller / processor 475 is used to send a second signaling.

[0220] Example 5

[0221] Embodiment 5 illustrates a flowchart of a first signaling, 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 U2 communicate with each other through the secondary link.

[0222] for The first node U1 , in step S10, a first signaling is sent; in step S11, K1 sub-signals and K1 signals are sent.

[0223] for The second node U2 , receiving the first signaling in step S20; receiving K1 sub-signals and K1 signals in step S21.

[0224] In Example 5, the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling.

[0225] As an embodiment, the K1 sub-signals are respectively associated with the K1 signals, the given sub-signaling is any one of the K1 sub-signals, the given sub-signaling is associated with a given signal among the K1 signals, and the given sub-signaling is used to indicate the redundant version adopted by the given signal.

[0226] As a sub-embodiment of this embodiment, the K1 sub-signals are respectively used to indicate K1 redundancy versions, the K1 redundancy versions are respectively used to generate the K1 signals, and at least two of the K1 redundancy versions are different.

[0227] As an embodiment, the first signaling is used to indicate a first identifier, and the first identifier is used to determine an initial value of a scrambling code sequence used by each of the K1 signals.

[0228] As a sub-embodiment of this embodiment, the first identifier is a non-negative integer.

[0229] As a sub-embodiment of this embodiment, the first identifier is used to identify the second node U2.

[0230] As a sub-embodiment of this embodiment, the first identifier is a layer-1 destination identifier (Layer-1 Destination ID).

[0231] As a sub-embodiment of this embodiment, the first signaling is used to indicate the frequency domain resources occupied by any one of the K1 signals.

[0232] As a sub-embodiment of this embodiment, the first signaling is used to indicate the MCS (Modulation and Coding Scheme) adopted by any one of the K1 signals.

[0233] As a sub-embodiment of this embodiment, the first signaling is used to indicate a QoS indication (Indication) for the first bit block.

[0234] As a sub-embodiment of this embodiment, the first signaling includes CRC (Cyclic Redundancy Check).

[0235] As a sub-embodiment of this embodiment, the first signaling is used for resource reservation (ResourceReservation).

[0236] As a sub-embodiment of this embodiment, the first signaling is used to indicate whether the first bit block is a retransmission.

[0237] As a sub-embodiment of this embodiment, the first signaling is used to indicate a transmission format (Transmission Format) adopted by the first bit block.

[0238] As a sub-embodiment of this embodiment, the first signaling is used to indicate a playback mode (Cast type) adopted by the first bit block.

[0239] As a sub-embodiment of this embodiment, the first signaling is used to indicate the existence of the K1 sub-signals.

[0240] As a sub-embodiment of this embodiment, the first signaling is used to indicate a pattern of a reference signal, and any one of the K1 signals is demodulated using the reference signal.

[0241] As an embodiment, any one of the K1 sub-signals carries a first geographical identifier, and the geographical location of the first node U1 is used to determine the first geographical identifier.

[0242] As a sub-embodiment of this embodiment, the first geographical identifier is a Zone ID (region identifier).

[0243] As a sub-embodiment of this embodiment, the given sub-signaling is one of the K1 sub-signalings, and the given sub-signaling includes a CSI (Channel State Information) indication.

[0244] As a sub-embodiment of this embodiment, the given sub-signaling is any sub-signaling among the K1 sub-signals.

[0245] As a subsidiary embodiment of this sub-embodiment, the given sub-signaling is one of the K1 sub-signals.

[0246] As a subsidiary embodiment of this sub-embodiment, the given sub-signaling includes a CSI indication.

[0247] As an example of this subsidiary embodiment, the CSI indication is used to indicate that the signal corresponding to the given sub-signaling among the K1 signals includes CSI.

[0248] As an example of this subsidiary embodiment, the given sub-signaling includes a CSI request (Request).

[0249] As an example of this subsidiary embodiment, the CSI request is used to instruct the second node U2 to report CSI.

[0250] As a subsidiary embodiment of this sub-embodiment, the given sub-signaling includes CBGTI (Code Block Group Transmission Indicator).

[0251] As a subsidiary embodiment of this sub-embodiment, the given sub-signaling includes NACK distance (non-acknowledgement distance).

[0252] As a subsidiary embodiment of this sub-embodiment, the given sub-signaling is used to instruct the second node U2 to determine whether to send NACK (Non-Acknowledgement) for the first bit block based on the distance between the second node U2 and the first node U1.

[0253] As a subsidiary embodiment of this sub-embodiment, the given sub-signaling includes a HARQ feedback indication (Feedback Indication).

[0254] As a subsidiary embodiment of this sub-embodiment, the given sub-signaling is used to indicate whether the second node sends HARQ feedback for the first bit block.

[0255] As an embodiment, the K1 sub-signalings are respectively associated with the K1 signals; the time-frequency resources occupied by the K1 signals belong to K1 time-frequency resource pools respectively, and the first signaling is used to determine the K1 time-frequency resource pools; the first sub-signaling is one of the K1 sub-signalings, the first signal is a signal among the K1 signals that is associated with the first sub-signaling, the time-frequency resources occupied by the first sub-signaling and the time-frequency resources occupied by the first signal belong to the same time-frequency resource pool among the K1 time-frequency resource pools, and any two time-frequency resource pools among the K1 time-frequency resource pools are orthogonal in the time-frequency domain; the demodulation reference signal associated with the first sub-signaling is the same as the demodulation reference signal associated with the first signal.

[0256] As a sub-embodiment of this embodiment, the above phrase "the demodulation reference signal associated with the first sub-signaling and the demodulation reference signal associated with the first signal are the same" means that: the demodulation reference signal associated with the first sub-signaling and the demodulation reference signal associated with the first signal are the same DMRS (demodulation reference signal).

[0257] As a sub-embodiment of this embodiment, the above phrase "the demodulation reference signal associated with the first sub-signaling is the same as the demodulation reference signal associated with the first signal" means that: the demodulation reference signal associated with the first sub-signaling and the demodulation reference signal associated with the first signal occupy the same REs (Resource Elements).

[0258] As a sub-embodiment of this embodiment, the above phrase "the demodulation reference signal associated with the first sub-signaling is the same as the demodulation reference signal associated with the first signal" means that the first sub-signaling and the first signal are demodulated using the demodulation reference signal on the same RE set, and the RE set includes a positive integer number of REs.

[0259] Example 6

[0260] Embodiment 6 illustrates a flowchart of a third signaling, as shown in the attached Figure 6 As shown in the attached Figure 6 In the example, the first node U3 communicates with the second node U4 via a secondary link, and the first node U3 communicates with the third node N5 via a cellular link.

[0261] for First node U3 , receiving a second signaling in step S30; receiving a third signaling in step S31; sending a fourth signaling in a target time unit in step S32;

[0262] for Second node U4 , sending a third signaling in step S40;

[0263] for The third node N5 , sending the second signaling in step S50; receiving the fourth signaling in the target time unit in step S51.

[0264] In Example 6, the information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals in the present application respectively occupy K1 first-class time units, and the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time unit, and the second time unit is the latest second-class time unit in the time domain among the K1 second-class time units; the first time unit is a second-class time unit among the K1 second-class time units and outside the second time unit; the first time unit is used to determine the target time unit; the third signaling is used to determine that the first bit block is correctly received; the second signaling is used to indicate K1 candidate time-frequency resource sets, and the K1 candidate time-frequency resource sets are respectively used for the transmission of the K1 signals.

[0265] As an embodiment, step S30 executed by the first node U3 is before step S10 in embodiment 5.

[0266] As an embodiment, steps S31 and S32 executed by the first node U3 are located after step S11 in embodiment 5.

[0267] As an embodiment, step S40 executed by the second node U4 is located after step S21 in embodiment 5.

[0268] As an embodiment, steps S31 and S32 executed by the first node U3 are located after step S11 in embodiment 5.

[0269] As an embodiment, step S50 executed by the third node is before step S10 in embodiment 5 in the time domain.

[0270] As an embodiment, step S51 executed by the third node is located after step S11 in embodiment 5 in the time domain.

[0271] As an embodiment, the physical layer channel carrying the third signaling includes PSFCH (Physical Sidelink Feedback Channel).

[0272] As an embodiment, the physical layer channel carrying the fourth signaling includes PUSCH (Physical Uplink Shared Channel).

[0273] As an embodiment, the physical layer channel carrying the fourth signaling includes PUCCH (Physical Uplink Control Channel, physical uplink shared channel).

[0274] As an embodiment, the fourth signaling is a UCI (Uplink Control Information, uplink control information).

[0275] As an embodiment, any one of the K1 first-type time units is a time slot.

[0276] As an embodiment, any one of the K1 first-type time units is a sub-slot.

[0277] As an embodiment, any one of the K1 second-type time units is a time slot.

[0278] As an embodiment, any one of the K1 second-type time units is a mini-time slot.

[0279] As an embodiment, the phrase “the first time unit is used to determine the target time unit” means that the time interval between the first time unit and the target time unit is fixed.

[0280] As an embodiment, the above phrase that the first time unit is used to determine the target time unit means that the time interval between the first time unit and the target time unit is configured through signaling, and the signaling is physical layer signaling or higher layer signaling.

[0281] As an embodiment, the second signaling is a DCI (Downlink Control Information).

[0282] As an embodiment, the second signaling is RRC signaling.

[0283] As an embodiment, the format adopted by the second signaling is DCI Format 5.

[0284] As an embodiment, the second signaling is used to indicate the time domain resources occupied by any one of the K1 candidate time-frequency resource sets.

[0285] As an embodiment, the second signaling is used to indicate the frequency domain resources occupied by any one of the K1 candidate time-frequency resource sets.

[0286] As an embodiment, the second signaling is used to indicate the K1.

[0287] As an embodiment, the third node N5 is a service cell of the second node U4, and the second node U4 is a terminal that performs V2X transmission with the first node.

[0288] As an embodiment, the third node N5 is a service cell other than the service cell of the second node U4, and the second node U4 is a terminal that performs V2X transmission with the first node.

[0289] As an embodiment, any one of the K1 candidate time-frequency resource sets includes a positive integer number of REs (Resource Elements).

[0290] Example 7

[0291] Embodiment 7 illustrates a schematic diagram of K1 sub-signals and K1 signals; Figure 7 In Example 7, the K1 sub-signals are respectively associated with the K1 signals; the K1 sub-signals are sent sequentially in the time domain, and the K1 signals are also sent sequentially in the time domain; a given sub-signaling is any one of the K1 sub-signals, and a given signal is a signal among the K1 signals that is related to the given sub-signaling.

[0292] As an embodiment, the K1 sub-signals are TDM (Time Division Multiplexing).

[0293] As an embodiment, the K1 signals are TDM.

[0294] As an embodiment, the K1 sub-signals are K1 repetitions of transmission of the secondary link control information.

[0295] As an embodiment, the K1 sub-signals are K1 repeated transmissions for the data channel.

[0296] As an embodiment, the given sub-signaling and the given signal are FDM (Frequency Division Multiplexing).

[0297] As an embodiment, the given sub-signaling is used to schedule the given signal.

[0298] As an embodiment, the time domain resources occupied by the given signal include the time domain resources occupied by the given sub-signaling.

[0299] As an embodiment, the time domain resources occupied by the given sub-signaling include the time domain resources occupied by the given signal.

[0300] As an embodiment, sub-signaling #x and sub-signaling #y are any two sub-signals among the K1 sub-signals, the sub-signaling #x is associated with signal #x, the sub-signaling #y is associated with signal #y, the sub-signaling #x is earlier than the sub-signaling #y in the time domain, and the signal #x is earlier than the signal #y in the time domain.

[0301] As an embodiment, the time domain resources occupied by the first signaling in the present application are earlier than the time domain resources occupied by any sub-signaling in the K1 sub-signals.

[0302] Example 8

[0303] Embodiment 8 illustrates a schematic diagram of a control information set according to an embodiment of the present application, as shown in the attached Figure 8 Attached Figure 8 In the embodiment, the control information set includes a first control information subset and a second control information subset, the first control information subset includes Q1 information groups, and the second control information subset includes Q2 information groups; both Q1 and Q2 are positive integers greater than 1.

[0304] As an embodiment, the control information set constitutes all the fields included in an SCI.

[0305] As an embodiment, any one of the Q1 information groups is a field in the SCI.

[0306] As an embodiment, any one of the Q2 information groups is a field in the SCI.

[0307] As an embodiment, the first signaling carries the Q1 information groups.

[0308] As an embodiment, any one of the K1 sub-signals carries the Q2 information groups.

[0309] As an embodiment, one of the Q1 information groups is used to indicate a layer 1 endpoint identifier.

[0310] As an embodiment, one of the Q2 information groups is used to indicate a Zone ID.

[0311] Example 9

[0312] Embodiment 9 illustrates a schematic diagram of a demodulation reference signal according to an embodiment of the present application, as shown in the attached figure. Fig. 9 Attached Fig. 9 In the present application, sub-signaling #m and sub-signaling #n are two different sub-signalings among the K1 sub-signalings, and the sub-signaling #m and sub-signaling #n are respectively associated with signal #m and signal #n among the K1 signals. The sub-signaling #m and the signal #m are both decoded using the first demodulation reference signal, and the sub-signaling #n and the signal #n are both decoded using the second demodulation reference signal.

[0313] As an embodiment, the resource unit occupied by the first demodulation reference signal and the resource unit occupied by the second demodulation reference signal are orthogonal in the time domain.

[0314] As an embodiment, a generation sequence of the first demodulation reference signal and a generation sequence of the second demodulation reference signal are different.

[0315] As an embodiment, the first demodulation reference signal cannot be used for demodulation of the sub-signaling #n and the signal #n.

[0316] As an embodiment, the first demodulation reference signal can be used for demodulation of the sub-signaling #m and the signal #m.

[0317] As an embodiment, the second demodulation reference signal cannot be used for demodulation of the sub-signaling #m and the signal #m.

[0318] As an embodiment, the second demodulation reference signal can be used for demodulation of the sub-signaling #n and the signal #n.

[0319] As an embodiment, the first demodulation reference signal is used for decoding on a secondary link.

[0320] As an embodiment, the second demodulation reference signal is used for decoding on a secondary link.

[0321] Example 10

[0322] Embodiment 10 illustrates a schematic diagram of the third signaling and the fourth signaling according to an embodiment of the present application, as shown in the attached figure. Fig.10 Attached Fig.10The K1 signals occupy K1 first-class time units respectively, and the K1 first-class time units are respectively related to K1 second-class time units. The second node in the present application determines that the first bit block in the present application is correctly received in the Lth first-class time unit among the K1 first-class time units, and sends the third signaling in the Lth second-class time unit corresponding to the Lth first-class time unit, and sends the fourth signaling in the target time unit; L is a positive integer not less than 1 and less than K1.

[0323] As an embodiment, any first-type time unit among the K1 first-type time units is a time slot.

[0324] As an embodiment, any first-type time unit among the K1 first-type time units is a mini-time slot.

[0325] As an embodiment, any second-type time unit among the K1 second-type time units is a time slot.

[0326] As an embodiment, any second-type time unit among the K1 second-type time units is a mini-time slot.

[0327] As an embodiment, the target time unit is a time slot.

[0328] As an embodiment, the target time unit is a mini-time slot.

[0329] As an embodiment, the second signaling is used to indicate the first delay.

[0330] As a sub-embodiment of this embodiment, the unit of the first delay is milliseconds.

[0331] As a sub-embodiment of this embodiment, the first delay is equal to a positive integer number of time slots.

[0332] As a sub-embodiment of this embodiment, the first delay is equal to a positive integer number of micro-time slots.

[0333] As a sub-embodiment of this embodiment, the time interval between the start time of the Lth second-type time unit and the start time of the target time unit is equal to the first delay.

[0334] As a sub-embodiment of this embodiment, the time interval between the start time of the Lth first-category time unit and the start time of the target time unit is equal to the first delay.

[0335] As a sub-embodiment of this embodiment, the time interval between the start time of the time domain resources occupied by the first signaling and the start time of the target time unit is equal to the first delay.

[0336] As a sub-embodiment of this embodiment, the time interval between the starting time of the time domain resources occupied by the second signaling and the starting time of the target time unit is equal to the first delay.

[0337] As an embodiment, the Lth second-category time unit is the first time unit in this application.

[0338] Embodiment 11

[0339] Embodiment 11 illustrates a structural block diagram in a first node, as shown in the attached Fig.11 Attached Fig.11 In the embodiment, the first node 1100 includes a first transceiver 1101 and a second transceiver 1102 .

[0340] The first transceiver 1101 sends a first signaling;

[0341] The second transceiver 1102 sends K1 sub-signals and K1 signals, where K1 is an integer greater than 1;

[0342] In Example 11, the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling.

[0343] As an embodiment, the K1 sub-signals are respectively associated with the K1 signals, the given sub-signaling is any one of the K1 sub-signals, the given sub-signaling is associated with a given signal among the K1 signals, and the given sub-signaling is used to indicate the redundant version adopted by the given signal.

[0344] As an embodiment, the first signaling is used to indicate a first identifier, and the first identifier is used to determine an initial value of a scrambling code sequence used by each of the K1 signals.

[0345] As an embodiment, any one of the K1 sub-signals carries a first geographical identifier, and the geographical location of the first node is used to determine the first geographical identifier.

[0346] As an embodiment, the K1 sub-signalings are respectively associated with the K1 signals; the time-frequency resources occupied by the K1 signals belong to K1 time-frequency resource pools respectively, and the first signaling is used to determine the K1 time-frequency resource pools; the first sub-signaling is one of the K1 sub-signalings, the first signal is a signal among the K1 signals that is associated with the first sub-signaling, the time-frequency resources occupied by the first sub-signaling and the time-frequency resources occupied by the first signal belong to the same time-frequency resource pool among the K1 time-frequency resource pools, and any two time-frequency resource pools among the K1 time-frequency resource pools are orthogonal in the time-frequency domain; the demodulation reference signal associated with the first sub-signaling is the same as the demodulation reference signal associated with the first signal.

[0347] As an embodiment, the second transceiver 1102 receives a third signaling, and the second transceiver 1102 sends a fourth signaling in a target time unit; the information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals respectively occupy K1 first-class time units, and the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time unit, and the second time unit is the latest second-class time unit in the time domain among the K1 second-class time units; the first time unit is a second-class time unit among the K1 second-class time units and outside the second time unit; the first time unit is used to determine the target time unit; the recipient of the fourth signaling includes a third node, the recipient of the first signaling includes a second node, and the third node and the second node are not co-located; the third signaling is used to determine that the first bit block is correctly received.

[0348] As an embodiment, the first transceiver 1101 receives second signaling; the second signaling is used to indicate K1 candidate time-frequency resource sets, and the K1 candidate time-frequency resource sets are respectively used for transmission of the K1 signals.

[0349] As an embodiment, the first transceiver 1101 includes at least the first 6 of the antenna 452, receiver / transmitter 454, multi-antenna receiving processor 458, receiving processor 456, multi-antenna transmitting processor 457, transmitting processor 468, and controller / processor 459 in Example 4.

[0350] As an embodiment, the first transceiver 1102 includes at least the first 6 of the antenna 452, receiver / transmitter 454, multi-antenna receive processor 458, receive processor 456, multi-antenna transmit processor 457, transmit processor 468, and controller / processor 459 in Example 4.

[0351] Example 12

[0352] Embodiment 12 illustrates a structural block diagram in a second node, as shown in the attached Fig.12 Attached Fig.12 In the example, the second node 1200 includes a first receiver 1201 and a third transceiver 1202 .

[0353] A first receiver 1201 receives a first signaling;

[0354] The third transceiver 1202 receives K1 sub-signals and K1 signals, where K1 is an integer greater than 1;

[0355] In Example 12, the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling.

[0356] As an embodiment, the K1 sub-signals are respectively associated with the K1 signals, the given sub-signaling is any one of the K1 sub-signals, the given sub-signaling is associated with a given signal among the K1 signals, and the given sub-signaling is used to indicate the redundant version adopted by the given signal.

[0357] As an embodiment, the first signaling is used to indicate a first identifier, and the first identifier is used to determine an initial value of a scrambling code sequence used by each of the K1 signals.

[0358] As an embodiment, any one of the K1 sub-signals carries a first geographical identifier, and the geographical location of the sender of the first signaling is used to determine the first geographical identifier.

[0359] As an embodiment, the K1 sub-signalings are respectively associated with the K1 signals; the time-frequency resources occupied by the K1 signals belong to K1 time-frequency resource pools respectively, and the first signaling is used to determine the K1 time-frequency resource pools; the first sub-signaling is one of the K1 sub-signalings, the first signal is a signal among the K1 signals that is associated with the first sub-signaling, the time-frequency resources occupied by the first sub-signaling and the time-frequency resources occupied by the first signal belong to the same time-frequency resource pool among the K1 time-frequency resource pools, and any two time-frequency resource pools among the K1 time-frequency resource pools are orthogonal in the time-frequency domain; the demodulation reference signal associated with the first sub-signaling is the same as the demodulation reference signal associated with the first signal.

[0360] As an embodiment, the third transceiver 1202 sends a third signaling; the information bits carried by the third signaling are used to generate a fourth signaling; the receiver of the third signaling includes a first node, and the first node sends the fourth signaling in a target time unit; the K1 signals respectively occupy K1 first-class time units, and the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time unit, and the second time unit is a second-class time unit located in the latest time domain among the K1 second-class time units; the first time unit is a second-class time unit among the K1 second-class time units and outside the second time unit; the first time unit is used to determine the target time unit; the receiver of the fourth signaling includes a third node, and the third node and the second node are not co-located; the third signaling is used to determine that the first bit block is correctly received.

[0361] As an embodiment, the first receiver 1201 includes at least the first four of the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, and the controller / processor 475 in Embodiment 4.

[0362] As an embodiment, the third transceiver 1202 includes at least the first six of the antenna 420, transmitter / receiver 418, multi-antenna transmit processor 471, transmit processor 416, multi-antenna receive processor 472, receive processor 470, and controller / processor 475 in Embodiment 4.

[0363] Example 13

[0364] Embodiment 13 illustrates a structural block diagram in a third node, as shown in the attached Fig.13 Attached Fig.13 , the third node 1300 includes a first transmitter 1301 and a second receiver 1302.

[0365] The first transmitter 1301 sends a second signaling;

[0366] The second receiver 1302 receives the fourth signaling in the target time unit;

[0367] In Example 13, the second signaling is used to indicate K1 candidate time-frequency resource sets, and the K1 candidate time-frequency resource sets are used for the transmission of K1 signals respectively; the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the receiver of the second signaling includes a first node, the first node sends a first signal, and the first node sends K1 sub-signals and the K1 signals, and K1 is an integer greater than 1; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are Dynamic signaling; the first node receives the third signaling and sends the fourth signaling in the target time unit; the information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals occupy K1 first-class time units respectively, the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time unit, and the second time unit is the latest second-class time unit in the time domain among the K1 second-class time units; the first time unit is a second-class time unit among the K1 second-class time units and outside the second time unit; the first time unit is used to determine the target time unit; the recipients of the first signaling include the second node, and the third node and the second node are not co-located; the third signaling is used to determine that the first bit block is correctly received.

[0368] As an embodiment, the K1 sub-signals are respectively associated with the K1 signals, the given sub-signaling is any one of the K1 sub-signals, the given sub-signaling is associated with a given signal among the K1 signals, and the given sub-signaling is used to indicate the redundant version adopted by the given signal.

[0369] As an embodiment, the first signaling is used to indicate a first identifier, and the first identifier is used to determine an initial value of a scrambling code sequence used by each of the K1 signals.

[0370] As an embodiment, any one of the K1 sub-signals carries a first geographical identifier, and the geographical location of the first node is used to determine the first geographical identifier.

[0371] As an embodiment, the K1 sub-signalings are respectively associated with the K1 signals; the time-frequency resources occupied by the K1 signals belong to K1 time-frequency resource pools respectively, and the first signaling is used to determine the K1 time-frequency resource pools; the first sub-signaling is one of the K1 sub-signalings, the first signal is a signal among the K1 signals that is associated with the first sub-signaling, the time-frequency resources occupied by the first sub-signaling and the time-frequency resources occupied by the first signal belong to the same time-frequency resource pool among the K1 time-frequency resource pools, and any two time-frequency resource pools among the K1 time-frequency resource pools are orthogonal in the time-frequency domain; the demodulation reference signal associated with the first sub-signaling is the same as the demodulation reference signal associated with the first signal.

[0372] As an embodiment, the first transmitter 1301 includes 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 in Embodiment 4.

[0373] As an embodiment, the second receiver 1302 includes at least the first four of the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, and the controller / processor 475 in Embodiment 4.

[0374] A person of ordinary skill in the art can understand that all or part of the steps in the above method can be completed 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, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of software and hardware combination. The first node and the second node in the present application include but are not limited to mobile phones, tablet computers, notebooks, Internet cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication equipment, transportation vehicles, vehicles, RSUs, aircraft, airplanes, drones, remote-controlled aircraft and other wireless communication devices. The base station in the present application includes but is not limited to macrocellular base stations, microcellular base stations, home base stations, relay base stations, eNBs, gNBs, transmission and reception nodes TRPs, GNSSs, relay satellites, satellite base stations, aerial base stations, RSUs and other wireless communication devices.

[0375] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A first node used for wireless communication, characterized in that include: A first transceiver sends a first signaling; A second transceiver sends K1 sub-signals and K1 signals, where K1 is an integer greater than 1; Among them, the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling; the first signaling and the K1 sub-signals are used together to schedule the transmission of the first bit block; the K1 signals share a HARQ process number, and any one of the K1 sub-signals includes the HARQ process number; the first signaling carries a first-level SCI, and the K1 sub-signals carry a second-level SCI; the physical layer channel carrying the first signaling includes PSCCH; the first signaling is transmitted on the sub-link, and any one of the K1 sub-signals is transmitted on the sub-link.

2. The first node according to claim 1, characterized in that: The K1 sub-signals are respectively associated with the K1 signals, a given sub-signaling is any one of the K1 sub-signals, the given sub-signaling is associated with a given signal among the K1 signals, and the given sub-signaling is used to indicate a redundancy version adopted by the given signal.

3. The first node according to claim 1 or 2, characterized in that: The first signaling is used to indicate a first identifier, and the first identifier is used to determine an initial value of a scrambling code sequence used by each of the K1 signals.

4. The first node according to any one of claims 1 to 3, characterized in that: Any one of the K1 sub-signals carries a first geographical identifier, and the geographical location of the first node is used to determine the first geographical identifier.

5. The first node according to any one of claims 1 to 4, characterized in that: The K1 sub-signalings are respectively associated with the K1 signals; the time-frequency resources occupied by the K1 signals belong to K1 time-frequency resource pools respectively, and the first signaling is used to determine the K1 time-frequency resource pools; the first sub-signaling is one of the K1 sub-signalings, the first signal is a signal among the K1 signals that is associated with the first sub-signaling, the time-frequency resources occupied by the first sub-signaling and the time-frequency resources occupied by the first signal belong to the same time-frequency resource pool among the K1 time-frequency resource pools, and any two time-frequency resource pools among the K1 time-frequency resource pools are orthogonal in the time-frequency domain; the demodulation reference signal associated with the first sub-signaling is the same as the demodulation reference signal associated with the first signal.

6. The first node according to any one of claims 1 to 5, characterized in that: The first transceiver receives second signaling; the second signaling is used to indicate K1 candidate time-frequency resource sets, and the K1 candidate time-frequency resource sets are respectively used for transmission of the K1 signals.

7. The first node according to any one of claims 1 to 6, characterized in that: The K1 sub-signals all carry a first information set, and the first information set is unchanged for the K1 signals.

8. The first node according to any one of claims 1 to 7, characterized in that: The value of K1 is configured through higher layer signaling.

9. The first node according to any one of claims 1 to 8, characterized in that: The meaning that the time-frequency resources occupied by any two sub-signals in the K1 sub-signals are orthogonal includes: there is no multi-carrier symbol that simultaneously belongs to the time domain resources respectively occupied by two sub-signals in the K1 sub-signals.

10. The first node according to any one of claims 1 to 9, characterized in that: The first signaling is used to indicate the MCS adopted by any one of the K1 signals.

11. The first node according to any one of claims 1 to 10, characterized in that: The first signaling includes a CRC.

12. The first node according to any one of claims 1 to 11, characterized in that: The first signaling is used for resource reservation.

13. The first node according to any one of claims 1 to 12, characterized in that: The first signaling is used to indicate a pattern of a reference signal, and any one of the K1 signals is demodulated using the reference signal.

14. The first node according to any one of claims 6 to 13, characterized in that: The second signaling includes a DCI.

15. The first node according to any one of claims 1 to 14, characterized in that: The K1 sub-signals are K1 repetition transmissions for the data channel.

16. The first node according to any one of claims 1 to 15, characterized in that: The given sub-signaling is one of the K1 sub-signalings, and the given sub-signaling includes a CSI request.

17. The first node according to any one of claims 1 to 16, characterized in that: The given sub-signaling is one of the K1 sub-signals, and the given sub-signaling is used to instruct the receiver of the first signaling to determine whether to send a NACK for the first bit block based on the distance between the receiver and the first node.

18. The first node according to any one of claims 1 to 17, characterized in that: The given sub-signaling is one of the K1 sub-signals, and the given sub-signaling is used to instruct the receiver of the first signaling to determine whether to send a NACK for the first bit block based on the distance between the receiver and the first node.

19. The first node according to any one of claims 1 to 18, characterized in that: The given sub-signaling is one of the K1 sub-signalings, and the given sub-signaling is used to indicate whether a receiver of the first signaling sends HARQ feedback for the first bit block.

20. The first node according to claim 6, characterized in that: The second signaling includes RRC signaling, and the second signaling is used to indicate the K1.

21. The first node according to any one of claims 1 to 20, characterized in that: The K1 sub-signals are sent sequentially in the time domain, and the K1 signals are also sent sequentially in the time domain.

22. The first node according to any one of claims 1 to 21, characterized in that: The K1 sub-signals are TDM.

23. A second node used for wireless communication, characterized in that include: A first receiver receives a first signaling; A third transceiver receives K1 sub-signals and K1 signals, where K1 is an integer greater than 1; Among them, the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling; the first signaling and the K1 sub-signals are used together to schedule the transmission of the first bit block; the K1 signals share a HARQ process number, and any one of the K1 sub-signals includes the HARQ process number; the first signaling carries a first-level SCI, and the K1 sub-signals carry a second-level SCI; the physical layer channel carrying the first signaling includes PSCCH; the first signaling is transmitted on the sub-link, and any one of the K1 sub-signals is transmitted on the sub-link.

24. The second node according to claim 23, characterized in that: The K1 sub-signals are respectively associated with the K1 signals, a given sub-signaling is any one of the K1 sub-signals, the given sub-signaling is associated with a given signal among the K1 signals, and the given sub-signaling is used to indicate a redundancy version adopted by the given signal.

25. The second node according to claim 23 or 24, characterized in that: The first signaling is used to indicate a first identifier, and the first identifier is used to determine an initial value of a scrambling code sequence used by each of the K1 signals.

26. The second node according to any one of claims 23 to 25, characterized in that: Any one of the K1 sub-signals carries a first geographical identifier, and the geographical location of the first node is used to determine the first geographical identifier.

27. The second node according to any one of claims 23 to 26, characterized in that: The K1 sub-signalings are respectively associated with the K1 signals; the time-frequency resources occupied by the K1 signals belong to K1 time-frequency resource pools respectively, and the first signaling is used to determine the K1 time-frequency resource pools; the first sub-signaling is one of the K1 sub-signalings, the first signal is a signal among the K1 signals that is associated with the first sub-signaling, the time-frequency resources occupied by the first sub-signaling and the time-frequency resources occupied by the first signal belong to the same time-frequency resource pool among the K1 time-frequency resource pools, and any two time-frequency resource pools among the K1 time-frequency resource pools are orthogonal in the time-frequency domain; the demodulation reference signal associated with the first sub-signaling is the same as the demodulation reference signal associated with the first signal.

28. The second node according to any one of claims 23 to 27, characterized in that: The K1 sub-signals all carry a first information set, and the first information set is unchanged for the K1 signals.

29. The second node according to any one of claims 23 to 28, characterized in that: The value of K1 is configured through higher layer signaling.

30. The second node according to any one of claims 23 to 29, characterized in that: The meaning that the time-frequency resources occupied by any two sub-signals in the K1 sub-signals are orthogonal includes: there is no multi-carrier symbol that simultaneously belongs to the time domain resources respectively occupied by two sub-signals in the K1 sub-signals.

31. The second node according to any one of claims 23 to 30, characterized in that: The first signaling is used to indicate the MCS adopted by any one of the K1 signals.

32. The second node according to any one of claims 23 to 31, characterized in that: The first signaling includes a CRC.

33. The second node according to any one of claims 23 to 32, characterized in that: The first signaling is used for resource reservation.

34. The second node according to any one of claims 23 to 33, characterized in that: The first signaling is used to indicate a pattern of a reference signal, and any one of the K1 signals is demodulated using the reference signal.

35. The second node according to any one of claims 23 to 34, characterized in that: The K1 sub-signals are K1 repetition transmissions for the data channel.

36. The second node according to any one of claims 23 to 35, characterized in that: The given sub-signaling is one of the K1 sub-signalings, and the given sub-signaling includes a CSI request.

37. The second node according to any one of claims 23 to 36, characterized in that: The given sub-signaling is one of the K1 sub-signals, and the given sub-signaling is used to instruct the receiver of the first signaling to determine whether to send a NACK for the first bit block based on the distance between the receiver and the first node.

38. The second node according to any one of claims 23 to 37, characterized in that: The given sub-signaling is one of the K1 sub-signals, and the given sub-signaling is used to instruct the receiver of the first signaling to determine whether to send a NACK for the first bit block based on the distance between the receiver and the first node.

39. The second node according to any one of claims 23 to 38, characterized in that: The given sub-signaling is one of the K1 sub-signalings, and the given sub-signaling is used to indicate whether a receiver of the first signaling sends HARQ feedback for the first bit block.

40. The second node according to any one of claims 23 to 39, characterized in that: The K1 sub-signals are sent sequentially in the time domain, and the K1 signals are also sent sequentially in the time domain.

41. The second node according to any one of claims 23 to 40, characterized in that: The K1 sub-signals are TDM.

42. A third node used for wireless communication, characterized in that include: A first transmitter sends a second signaling; A second receiver receives a fourth signaling in a target time unit; The second signaling is used to indicate K1 candidate time-frequency resource sets, and the K1 candidate time-frequency resource sets are used for the transmission of K1 signals respectively; the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the receiver of the second signaling includes a first node, the first node sends a first signaling, and the first node sends K1 sub-signals and the K1 signals, and K1 is an integer greater than 1; the first signaling is used to indicate the portion of the K1 sub-signals occupied by any one of the K1 sub-signals The first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling; the first node receives the third signaling and sends the fourth signaling in the target time unit; the information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals occupy K1 first-class time units respectively, and the K1 first-class time units are respectively occupied by the first and second sub-signals. A type of time unit is respectively related to K1 second type time units, the third signaling occupies the first time unit, and the second time unit is a second type time unit located latest in the time domain among the K1 second type time units; the first time unit is a second type time unit among the K1 second type time units and outside the second time unit; the first time unit is used to determine the target time unit; the receiver of the first signaling includes a second node, and the third node and the second node are not co-located; the third signaling is used to determine that the first bit block is correctly received; the first signaling and the K1 sub-signals are used together to schedule the transmission of the first bit block; the K1 signals share a HARQ process number, and any one of the K1 sub-signals includes the HARQ process number; the first signaling carries a first-level SCI, and the K1 sub-signals carry a second-level SCI; the physical layer channel carrying the first signaling includes PSCCH; the first signaling is transmitted on the sub-link, and any one of the K1 sub-signals is transmitted on the sub-link.

43. The third node according to claim 42, characterized in that: The second signaling includes a DCI.

44. The third node according to claim 42 or 43, characterized in that: The second signaling includes RRC signaling, and the second signaling is used to indicate the K1.

45. A method for a first node in wireless communication, characterized in that include: Sending a first signaling; Sending K1 sub-signals and K1 signals, where K1 is an integer greater than 1; Among them, the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling; the first signaling and the K1 sub-signals are used together to schedule the transmission of the first bit block; the K1 signals share a HARQ process number, and any one of the K1 sub-signals includes the HARQ process number; the first signaling carries a first-level SCI, and the K1 sub-signals carry a second-level SCI; the physical layer channel carrying the first signaling includes PSCCH; the first signaling is transmitted on the sub-link, and any one of the K1 sub-signals is transmitted on the sub-link.

46. ​​The method of the first node according to claim 45, characterized in that The K1 sub-signals are respectively associated with the K1 signals, a given sub-signaling is any one of the K1 sub-signals, the given sub-signaling is associated with a given signal among the K1 signals, and the given sub-signaling is used to indicate a redundancy version adopted by the given signal.

47. The method of the first node according to claim 45 or 46, characterized in that: The first signaling is used to indicate a first identifier, and the first identifier is used to determine an initial value of a scrambling code sequence used by each of the K1 signals.

48. The method of the first node according to any one of claims 45 to 47, characterized in that: Any one of the K1 sub-signals carries a first geographical identifier, and the geographical location of the first node is used to determine the first geographical identifier.

49. The method of the first node according to any one of claims 45 to 48, characterized in that: The K1 sub-signalings are respectively associated with the K1 signals; the time-frequency resources occupied by the K1 signals belong to K1 time-frequency resource pools respectively, and the first signaling is used to determine the K1 time-frequency resource pools; the first sub-signaling is one of the K1 sub-signalings, the first signal is a signal among the K1 signals that is associated with the first sub-signaling, the time-frequency resources occupied by the first sub-signaling and the time-frequency resources occupied by the first signal belong to the same time-frequency resource pool among the K1 time-frequency resource pools, and any two time-frequency resource pools among the K1 time-frequency resource pools are orthogonal in the time-frequency domain; the demodulation reference signal associated with the first sub-signaling is the same as the demodulation reference signal associated with the first signal.

50. A method according to any one of claims 45 to 49, characterized in that the first node include: receiving a second signaling; The second signaling is used to indicate K1 candidate time-frequency resource sets, and the K1 candidate time-frequency resource sets are used for transmission of the K1 signals respectively.

51. The method of the first node according to any one of claims 45 to 50, characterized in that: The K1 sub-signals all carry a first information set, and the first information set is unchanged for the K1 signals.

52. The method of the first node according to any one of claims 45 to 51, characterized in that: The value of K1 is configured through higher layer signaling.

53. The method of the first node according to any one of claims 45 to 52, characterized in that: The meaning that the time-frequency resources occupied by any two sub-signals in the K1 sub-signals are orthogonal includes: there is no multi-carrier symbol that simultaneously belongs to the time domain resources respectively occupied by two sub-signals in the K1 sub-signals.

54. The method of the first node according to any one of claims 45 to 53, characterized in that: The first signaling is used to indicate the MCS adopted by any one of the K1 signals.

55. The method of the first node according to any one of claims 45 to 54, characterized in that: The first signaling includes a CRC.

56. The method of the first node according to any one of claims 45 to 55, characterized in that: The first signaling is used for resource reservation.

57. The method of the first node according to any one of claims 45 to 56, characterized in that: The first signaling is used to indicate a pattern of a reference signal, and any one of the K1 signals is demodulated using the reference signal.

58. The method of the first node according to any one of claims 50 to 57, characterized in that: The second signaling includes a DCI.

59. The method of the first node according to any one of claims 45 to 58, characterized in that: The K1 sub-signals are K1 repetition transmissions for the data channel.

60. The method of the first node according to any one of claims 45 to 59, characterized in that: The given sub-signaling is one of the K1 sub-signalings, and the given sub-signaling includes a CSI request.

61. The method of the first node according to any one of claims 45 to 60, characterized in that: The given sub-signaling is one of the K1 sub-signals, and the given sub-signaling is used to instruct the receiver of the first signaling to determine whether to send a NACK for the first bit block based on the distance between the receiver and the first node.

62. The method of the first node according to any one of claims 45 to 61, characterized in that: The given sub-signaling is one of the K1 sub-signals, and the given sub-signaling is used to instruct the receiver of the first signaling to determine whether to send a NACK for the first bit block based on the distance between the receiver and the first node.

63. The method of the first node according to any one of claims 45 to 62, characterized in that: The given sub-signaling is one of the K1 sub-signalings, and the given sub-signaling is used to indicate whether a receiver of the first signaling sends HARQ feedback for the first bit block.

64. The method of the first node according to claim 50, characterized in that: The second signaling includes RRC signaling, and the second signaling is used to indicate the K1.

65. The method of the first node according to any one of claims 45 to 64, characterized in that The K1 sub-signals are sent sequentially in the time domain, and the K1 signals are also sent sequentially in the time domain.

66. The method of the first node according to any one of claims 45 to 65, characterized in that: The K1 sub-signals are TDM.

67. A method for a second node used in wireless communication, characterized in that include: receiving a first signaling; receiving K1 sub-signals and K1 signals, where K1 is an integer greater than 1; Among them, the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the first signaling is used to indicate the time-frequency resources occupied by any one of the K1 sub-signals; the first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling; the first signaling and the K1 sub-signals are used together to schedule the transmission of the first bit block; the K1 signals share a HARQ process number, and any one of the K1 sub-signals includes the HARQ process number; the first signaling carries a first-level SCI, and the K1 sub-signals carry a second-level SCI; the physical layer channel carrying the first signaling includes PSCCH; the first signaling is transmitted on the sub-link, and any one of the K1 sub-signals is transmitted on the sub-link.

68. The method of the second node according to claim 67, characterized in that: The K1 sub-signals are respectively associated with the K1 signals, a given sub-signaling is any one of the K1 sub-signals, the given sub-signaling is associated with a given signal among the K1 signals, and the given sub-signaling is used to indicate a redundancy version adopted by the given signal.

69. The method of the second node according to claim 67 or 68, characterized in that: The first signaling is used to indicate a first identifier, and the first identifier is used to determine an initial value of a scrambling code sequence used by each of the K1 signals.

70. The method of the second node according to any one of claims 67 to 69, characterized in that: Any one of the K1 sub-signals carries a first geographical identifier, and the geographical location of the first node is used to determine the first geographical identifier.

71. The method of the second node according to any one of claims 67 to 70, characterized in that: The K1 sub-signalings are respectively associated with the K1 signals; the time-frequency resources occupied by the K1 signals belong to K1 time-frequency resource pools respectively, and the first signaling is used to determine the K1 time-frequency resource pools; the first sub-signaling is one of the K1 sub-signalings, the first signal is a signal among the K1 signals that is associated with the first sub-signaling, the time-frequency resources occupied by the first sub-signaling and the time-frequency resources occupied by the first signal belong to the same time-frequency resource pool among the K1 time-frequency resource pools, and any two time-frequency resource pools among the K1 time-frequency resource pools are orthogonal in the time-frequency domain; the demodulation reference signal associated with the first sub-signaling is the same as the demodulation reference signal associated with the first signal.

72. The method of the second node according to any one of claims 67 to 71, characterized in that: The K1 sub-signals all carry a first information set, and the first information set is unchanged for the K1 signals.

73. The method of the second node according to any one of claims 67 to 72, characterized in that: The value of K1 is configured through higher layer signaling.

74. The method of the second node according to any one of claims 67 to 73, characterized in that: The meaning that the time-frequency resources occupied by any two sub-signals in the K1 sub-signals are orthogonal includes: there is no multi-carrier symbol that simultaneously belongs to the time domain resources respectively occupied by two sub-signals in the K1 sub-signals.

75. The method of the second node according to any one of claims 67 to 74, characterized in that: The first signaling is used to indicate the MCS adopted by any one of the K1 signals.

76. The method of the second node according to any one of claims 67 to 75, characterized in that: The first signaling includes a CRC.

77. The method of the second node according to any one of claims 67 to 76, characterized in that: The first signaling is used for resource reservation.

78. The method of the second node according to any one of claims 67 to 77, characterized in that: The first signaling is used to indicate a pattern of a reference signal, and any one of the K1 signals is demodulated using the reference signal.

79. The method of the second node according to any one of claims 67 to 78, characterized in that: The K1 sub-signals are K1 repetition transmissions for the data channel.

80. The method of the second node according to any one of claims 67 to 79, characterized in that: The given sub-signaling is one of the K1 sub-signalings, and the given sub-signaling includes a CSI request.

81. The method of the second node according to any one of claims 67 to 80, characterized in that: The given sub-signaling is one of the K1 sub-signals, and the given sub-signaling is used to instruct the receiver of the first signaling to determine whether to send a NACK for the first bit block based on the distance between the receiver and the first node.

82. The method of the second node according to any one of claims 67 to 81, characterized in that: The given sub-signaling is one of the K1 sub-signals, and the given sub-signaling is used to instruct the receiver of the first signaling to determine whether to send a NACK for the first bit block based on the distance between the receiver and the first node.

83. The method of the second node according to any one of claims 67 to 82, characterized in that: The given sub-signaling is one of the K1 sub-signalings, and the given sub-signaling is used to indicate whether a receiver of the first signaling sends HARQ feedback for the first bit block.

84. The method of the second node according to any one of claims 67 to 83, characterized in that: The K1 sub-signals are sent sequentially in the time domain, and the K1 signals are also sent sequentially in the time domain.

85. The method of the second node according to any one of claims 67 to 84, characterized in that: The K1 sub-signals are TDM.

86. A method used in a third node of wireless communication, characterized in that include: Sending a second signaling; receiving a fourth signaling in a target time unit; The second signaling is used to indicate K1 candidate time-frequency resource sets, and the K1 candidate time-frequency resource sets are used for the transmission of K1 signals respectively; the first bit block is used to generate any one of the K1 signals, and the first bit block includes a positive integer number of bits; the receiver of the second signaling includes a first node, the first node sends a first signaling, and the first node sends K1 sub-signals and the K1 signals, and K1 is an integer greater than 1; the first signaling is used to indicate the portion of the K1 sub-signals occupied by any one of the K1 sub-signals The first signaling and any one of the K1 sub-signals are associated with the first bit block; the time-frequency resources occupied by any two of the K1 sub-signals are orthogonal, and the first signaling and any one of the K1 sub-signals are dynamic signaling; the first node receives the third signaling and sends the fourth signaling in the target time unit; the information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals occupy K1 first-class time units respectively, and the K1 first-class time units are respectively occupied by the first and second sub-signals. A type of time unit is respectively related to K1 second type time units, the third signaling occupies the first time unit, and the second time unit is a second type time unit located latest in the time domain among the K1 second type time units; the first time unit is a second type time unit among the K1 second type time units and outside the second time unit; the first time unit is used to determine the target time unit; the receiver of the first signaling includes a second node, and the third node and the second node are not co-located; the third signaling is used to determine that the first bit block is correctly received; the first signaling and the K1 sub-signals are used together to schedule the transmission of the first bit block; the K1 signals share a HARQ process number, and any one of the K1 sub-signals includes the HARQ process number; the first signaling carries a first-level SCI, and the K1 sub-signals carry a second-level SCI; the physical layer channel carrying the first signaling includes PSCCH; the first signaling is transmitted on the sub-link, and any one of the K1 sub-signals is transmitted on the sub-link.

87. The method in the third node according to claim 86, characterized in that: The second signaling includes a DCI.

88. The method in the third node according to claim 86 or 87, characterized in that: The second signaling includes RRC signaling, and the second signaling is used to indicate the K1.

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