CN115190634A

CN115190634A - Method and device used in node of wireless communication

Info

Publication number: CN115190634A
Application number: CN202210876502.5A
Authority: CN
Inventors: 蒋琦; 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2022-10-14
Also published as: CN112688760A; CN115066025A; CN112688760B

Abstract

A method and apparatus in a node used for wireless communication is disclosed. The first node firstly sends a first signaling, and sends K1 sub-signaling and K1 signals; a first block of bits is used to generate any one of the K1 signals, the first block of bits comprising a positive integer number of bits; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; and time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling. By introducing a repeated sending mechanism, on the premise of ensuring the robustness of sidelink transmission, excessive signaling overhead is not increased, and the overall performance of the system is improved.

Description

Method and device used in node of wireless communication

The present application is a divisional application of the following original applications:

application date of the original application: 10 and 17 months in 2019

- -application number of the original application: 201910985802.5

The invention of the original application is named: method and apparatus in a node used for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission method and apparatus related to a Sidelink (Sidelink) in wireless communication.

Background

In the future, the application scenes of the wireless communication system are more and more diversified, and different application scenes put different performance requirements on the system. In order to meet different performance requirements of various application scenarios, research on New air interface technology (NR, new Radio) (or Fifth Generation, 5G) is decided over #72 sessions of 3GPP (3 rd Generation Partner Project) RAN (Radio Access Network), and standardization Work on NR begins over 3GPP RAN #75 sessions over WI (Work Item ) of NR.

For the rapidly evolving Vehicle-to-evolution (V2X) service, the 3GPP initiated standard formulation and research work under the NR framework. Currently, 3GPP has completed the work of formulating requirements for the 5G V2X service and has written the standard TS22.886. The 3GPP defines a 4-large application scenario group (Use Case Groups) for the 5G V2X service, including: automatic queuing Driving (Vehicles platform), extended sensing (Extended Sensors), semi/full automatic Driving (Advanced Driving) and Remote Driving (Remote Driving). NR-based V2X technical studies have been initiated on the 3GPP ran #80 event. Meanwhile, at RAN1#98 times, two-Stage SCI (Sidelink Control Information) is supported to improve transmission performance on the Sidelink.

Disclosure of Invention

In future V2X systems, more types of information will be fed back to the secondary link, for example, multiple services such as eMBB (enhanced Mobile Broadband) and URLLC (Ultra Reliable and Low Latency Communication) are simultaneously supported on the secondary link. Repetition (Repetition) is a relatively effective way to improve transmission robustness, especially to improve performance of a URLLC control channel, and how to reasonably and efficiently transmit sidelink control information in a scene of two-stage SCI needs to be redesigned in combination with the proposal of two-stage SCI.

In view of the above, the present application discloses a solution. It should be noted that, in the above description of the problem, V2X is only used as an example of an application scenario of the solution provided in the present application; the application is also applicable to the scene of cellular network, for example, and achieves the technical effect similar to that in V2X. Similarly, the method and the device are also suitable for scenes in which the same type of control information is transmitted for multiple times, so that the technical effect similar to that in two-level SCI scenes is achieved. Furthermore, employing a unified solution for different scenarios (including but not limited to V2X scenarios and non-V2X scenarios) also helps to reduce hardware complexity and cost.

It should be further noted that, in the case of no conflict, the features in the embodiments and embodiments in the first node of the present application may be applied to the second node or the third node; conversely, features in embodiments and embodiments in the second node in the present application may be applied to the first node, or features in embodiments and embodiments in the third node in the present application may be applied to the first node. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

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

sending a first signaling;

sending K1 sub-signaling and K1 signals, wherein K1 is an integer greater than 1;

wherein a first block of bits is used to generate any one of the K1 signals, the first block of bits comprising a positive integer number of bits; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; and time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling.

As an embodiment, the essence of the above method is: the first signaling is a first-level SCI, the K1 sub-signaling is a second-level SCI, and only the second-level SCI is repeatedly transmitted.

As an example, the above method has the benefits of: when the first signaling and the K1 sub-signaling are used for scheduling of the same TB (transmission Block), only the K1 sub-signaling is repeatedly transmitted to improve the robustness of the corresponding control information part; the first signaling can adopt a mode of increasing Aggregation Level (Aggregation Level) to improve robustness, so that repeated sending of the whole two-stage SCI is avoided, and excessive signaling overhead is avoided.

As an example, another benefit of the above method is: when the first signaling is not sent repeatedly, the receiving end of the first signaling can complete demodulation of the first signaling in advance, and when the scheme is used for multicast (Groupcast), the mode can help the receiving end to know whether to further demodulate the second-level SCI in advance, so that the complexity and unnecessary detection overhead of the receiving end are reduced.

According to one aspect of the present application, the method is characterized in that the K1 sub-signalings are respectively associated with the K1 signals, a given sub-signaling is any one of the K1 sub-signalings, the given sub-signaling is associated with a given signal of the K1 signals, and the given sub-signaling is used for indicating a redundancy version adopted by the given signal.

As an example, the above method has the benefits of: the RV (redundancy Version) is dynamically indicated by the second-level SCI, increasing scheduling flexibility and performance of repeated transmissions.

According to one aspect of the application, the above method is characterized in that the first signaling is used to indicate a first identity, which is used to determine an initial value of a Scrambling Sequence (Scrambling Sequence) employed by each of the K1 signals.

As an example, the above method has the benefits of: and putting the first identification into the first-level SCI, so that a receiving end can conveniently and early judge whether the K1 sub-signaling needs to be demodulated subsequently.

According to one aspect of the application, the method is characterized in that any one of the K1 sub-signaling carries a first geographical identity, and the geographical location of the first node is used to determine the first geographical identity.

As an example, the above method has the benefits of: the first geographical identification is put into the second-level SCI, and for a terminal which does not need to decode the second-level SCI further, the detection related to the first geographical identification can be ignored to reduce the complexity of the terminal.

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 respectively belong to K1 time frequency resource pools, and the first signaling is used for determining the K1 time frequency resource pools; the first sub-signaling is one sub-signaling in the K1 sub-signaling, the first signal is a signal associated with the first sub-signaling in the K1 signals, both a time-frequency resource occupied by the first sub-signaling and a time-frequency resource occupied by the first signal belong to the same time-frequency resource pool in the K1 time-frequency resource pools, and any two time-frequency resource pools in the K1 time-frequency resource pools are orthogonal in a 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.

According to one aspect of the application, the above method is characterized in that,

receiving a third signaling;

transmitting a fourth signaling in the target time unit;

wherein information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals respectively occupy K1 first-class time units, the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time units, and the second time unit is one of the K1 second-class time units which is positioned in the latest time domain; the first time unit is one of the K1 second-class time units except the second time unit; the first time unit is used to determine the target time unit; the receiver of the fourth signaling comprises a third node, the receiver of the first signaling comprises a second node, and the third node is non-co-located with the second node; the third signaling is used to determine that the first block of bits is correctly received.

As an example, the above method has the benefits of: when the second-level SCI and the corresponding data both adopt a repeated transmission mode, feedback on the sidelink and feedback on the cellular link for the first bit block can be sent in advance without waiting for the last time, so that delay is reduced, and transmission performance is improved.

According to one aspect of the application, the method described above is characterized by comprising:

receiving a second signaling;

wherein the second signaling is used to indicate K1 candidate sets of time-frequency resources, the K1 candidate sets of time-frequency resources being used for transmission of the K1 signals, respectively.

As an example, the above method has the benefits of: the second signaling is used for indicating time-frequency resources occupied by a sending end of the V2X when sending data so as to correspond to the transmission of PSSCH controlled by a network side.

The application discloses a method in a second node used for wireless communication, characterized by comprising:

receiving a first signaling;

receiving K1 sub-signaling and K1 signals, wherein K1 is an integer greater than 1;

wherein a first block of bits is used to generate any one of the K1 signals, the first block of bits comprising a positive integer number of bits; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; and time frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling.

According to an aspect of the application, the above method is characterized in that the K1 sub-signalings are respectively associated with the K1 signals, a given sub-signaling is any one of the K1 sub-signalings, the given sub-signaling is associated with a given signal of the K1 signals, and the given sub-signaling is used for indicating a redundancy version adopted by the given signal.

According to one aspect of the application, the above method is characterized in that the first signaling is used to indicate a first identity used to determine an initial value of a scrambling sequence employed by each of the K1 signals.

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

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 respectively belong to K1 time frequency resource pools, and the first signaling is used for determining the K1 time frequency resource pools; the first sub-signaling is one of the K1 sub-signaling, the first signal is a signal of the K1 signals associated with the first sub-signaling, both the time-frequency resource occupied by the first sub-signaling and the time-frequency resource occupied by the first signal belong to the same time-frequency resource pool of the K1 time-frequency resource pools, and any two time-frequency resource pools of the K1 time-frequency resource pools are orthogonal in a 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.

sending a third signaling;

wherein information bits carried by the third signaling are used to generate a fourth signaling; the receiver of the third signaling comprises a first node that sends the fourth signaling in a target time unit; the K1 signals respectively occupy K1 first-class time units, the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time units, and the second time unit is the second-class time unit which is positioned in the latest time domain in the K1 second-class time units; the first time unit is one of the K1 second-class time units except the second time unit; the first time unit is used to determine the target time unit; a receiver of the fourth signaling comprises a third node that is non-co-located with the second node; the third signaling is used to determine that the first block of bits is correctly received.

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

sending a second signaling;

receiving a fourth signaling in the target time unit;

wherein the second signaling is used to indicate K1 candidate sets of time-frequency resources, the K1 candidate sets of time-frequency resources being used for transmission of K1 signals, respectively; a first bit block is used to generate any one of the K1 signals, the first bit block comprising a positive integer number of bits; the receiver of the second signaling comprises a first node, the first node sends a first signaling, and the first node sends K1 sub-signaling and the K1 signals, wherein K1 is an integer greater than 1; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling; the first node receiving a third signaling and sending the fourth signaling in the target time unit; information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals respectively occupy K1 first-class time units, the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time units, and the second time unit is one of the K1 second-class time units which is positioned in the latest time domain; the first time unit is one of the K1 second-class time units except the second time unit; the first time unit is used to determine the target time unit; a receiver of the first signaling comprises a second node, the third node being non-co-located with the second node; the third signaling is used to determine that the first block of bits is correctly received.

According to one aspect of the application, the above method is characterized in that the first signaling is used to indicate a first identity, which is used to determine an initial value of a scrambling sequence employed by each of the K1 signals.

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

According to one aspect of the application, the above method is characterized in that the K1 sub-signallings are respectively associated with the K1 signals; the time frequency resources occupied by the K1 signals respectively belong to K1 time frequency resource pools, and the first signaling is used for determining the K1 time frequency resource pools; the first sub-signaling is one of the K1 sub-signaling, the first signal is a signal of the K1 signals associated with the first sub-signaling, both the time-frequency resource occupied by the first sub-signaling and the time-frequency resource occupied by the first signal belong to the same time-frequency resource pool of the K1 time-frequency resource pools, and any two time-frequency resource pools of the K1 time-frequency resource pools are orthogonal in a 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.

The application discloses a first node used for wireless communication, characterized by comprising:

a first transceiver to transmit a first signaling;

the second transceiver is used for transmitting K1 sub-signaling and K1 signals, wherein K1 is an integer larger than 1;

The application discloses a second node used for wireless communication, characterized by comprising:

a first receiver receiving a first signaling;

a third transceiver for receiving K1 sub-signaling and K1 signals, wherein K1 is an integer greater than 1;

The application discloses be used for wireless communication's third node, its characterized in that includes:

a first transmitter for transmitting a second signaling;

a second receiver that receives the fourth signaling in the target time unit;

As an example, compared with the conventional scheme, the method has the following advantages:

when the first signaling and K1 sub-signaling are used for scheduling of the same TB (transmission Block), only the K1 sub-signaling is repeatedly transmitted to improve the robustness of the corresponding control information part; the first signaling can adopt a mode of increasing Aggregation Level (Aggregation Level) to improve robustness, so that repeated sending of the whole two-stage SCI is avoided, and excessive signaling overhead is avoided;

when the first signaling is not repeatedly sent, the receiving end of the first signaling may complete demodulation of the first signaling in advance, and when the scheme is used for multicast (Groupcast), the foregoing manner may help the receiving end to know in advance whether to further demodulate the second-level SCI, thereby reducing complexity of the receiving end and unnecessary detection overhead;

dynamically indicating the RV (redundant Version) through the second-level SCI, thereby increasing scheduling flexibility and performance of repeated transmission; and placing the first geographical identification into the second-level SCI, wherein for a terminal which does not need to decode the second-level SCI further, the detection related to the first geographical identification can be ignored so as to reduce the complexity of the terminal;

the first identifier is placed in the first-level SCI, so that the receiving end can determine as early as possible whether to demodulate the K1 sub-signaling subsequently.

Drawings

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

FIG. 1 illustrates a process flow diagram of a first node according to one embodiment of the present application;

FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

figure 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application;

fig. 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the application;

fig. 5 shows a flow diagram of first signaling according to an embodiment of the application;

figure 6 shows a flow diagram of third signaling according to an embodiment of the present application;

fig. 7 shows a schematic diagram of K1 sub-signaling and K1 signals according to an embodiment of the application;

FIG. 8 shows a schematic diagram of a control information set according to an embodiment of the present application;

fig. 9 shows a schematic diagram of a demodulation reference signal according to an embodiment of the present application;

figure 10 shows a schematic diagram of a third signaling and a fourth signaling according to an embodiment of the present application;

FIG. 11 shows a block diagram of a structure used in a first node according to an embodiment of the present application;

figure 12 shows a block diagram of a structure used in a second node according to an embodiment of the present application;

fig. 13 shows a block diagram of a structure used in a third node according to an embodiment of the present application.

Detailed Description

The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a processing flow diagram of a first node, as shown in fig. 1. In 100 shown in fig. 1, each block represents a step. In embodiment 1, a first node in the present application sends a first signaling in step 101, and sends K1 sub-signaling and K1 signals in step 102, where K1 is an integer greater than 1.

In embodiment 1, a first bit block is used to generate any one of the K1 signals, the first bit block including a positive integer number of bits; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; and time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling.

As an embodiment, the first signaling is an SCI.

As an embodiment, any one of the K1 sub-signaling is an SCI.

As an embodiment, the First signaling carries a First-stage (First-stage) SCI, and the K1 sub-signaling carries a Second-stage (Second-stage) SCI.

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

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

As an embodiment, the first bit block is used to generate one TB.

As one embodiment, the first bit block includes a positive integer number of bits.

As an embodiment, the Physical layer Channel carrying the first signaling includes a PSCCH (Physical Sidelink Control Channel).

As an embodiment, the Physical layer Channel carrying any one of the K1 sub-signalings includes a psch (Physical Sidelink Shared Channel).

As an embodiment, the physical layer channel carrying any one of the K1 sub-signalings includes PSCCH.

As an embodiment, a physical layer channel carrying any one of the K1 signals includes a psch.

As an embodiment, the first signaling is used to indicate a time domain resource occupied by any one of the K1 sub-signaling.

As an embodiment, the first signaling is used to indicate a frequency domain resource occupied by any one of the K1 sub-signaling.

As an embodiment, the first signaling is used to indicate a time domain resource and a frequency domain resource occupied by any one of the K1 sub-signaling.

As an implementation, the meaning of any one of the first signaling and the K1 sub-signaling in the above phrase that is associated with the first bit block includes: the first signaling and the K1 sub-signaling are used together to schedule transmission of the first bit block.

As an implementation, the above phrase that any one of the first signaling and the K1 sub-signaling is associated with the first bit block means that: the first signaling is used for determining frequency domain resources occupied by the K1 signals, and the K1 sub-signaling is respectively used for indicating time domain resources occupied by the K1 signals.

As an implementation, the above phrase that any one of the first signaling and the K1 sub-signaling is associated with the first bit block means that: the first signaling is used for determining time domain resources occupied by the K1 signals, and the K1 sub-signaling is respectively used for indicating the frequency domain resources occupied by the K1 signals.

As an embodiment, the K1 signals share one HARQ (Hybrid Automatic Repeat reQuest) process number.

As a sub-embodiment of this embodiment, any one of the K1 sub-signalings includes the HARQ process number.

As a sub-embodiment of this embodiment, any one of the K1 sub-signallings indicates one same HARQ process number.

As an embodiment, the first signaling is used to indicate a HARQ process number employed by the first bit block.

As an embodiment, the K1 sub-signalings are respectively associated with the K1 signals.

As a sub-embodiment of this embodiment, the K1 sub-signaling is used to indicate the K1 signals, respectively.

As a sub-embodiment of this embodiment, the K1 sub-signalings all carry a first information set, and the first information set is invariant to the K1 signals.

As a sub-embodiment of this embodiment, the second sub-signaling is the earliest sub-signaling in the time domain among the K1 sub-signaling, 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.

As a sub-embodiment of this embodiment, the third sub-signaling is one of the K1 sub-signaling except for the sub-signaling that is earliest in a time domain, the third sub-signaling is associated with a target signal of the K1 signals, and the third sub-signaling is used to indicate that the target signal is a repeated (Repetition) transmission for the first bit block.

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

As an embodiment, the first signaling is used for Channel Sensing (Channel Sensing) of terminals other than the first node.

As an embodiment, the receiver of the first signaling comprises a second node that receives the first signaling through blind detection.

As an embodiment, the receiver of the first signaling includes a second node, and the second node knows the positions of the time-frequency resources occupied by the K1 sub-signaling when receiving the K1 sub-signaling.

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

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

As an embodiment, both the time domain resource occupied by the first signaling and the time resource occupied by the K1 sub-signaling belong to a first time window, where the first time window includes M1 consecutive time slots, and M1 is a positive integer greater than 1.

As an embodiment, any one of the K1 sub-signallings is encoded by using a polarization code.

As an embodiment, the first signaling is transmitted on a sidelink.

As an embodiment, any one of the K1 sub-signalings is transmitted on a secondary link.

As an embodiment, any one of the K1 signals is transmitted on a sidelink.

As an example, the value of K1 is fixed.

As an example, the value of K1 is dynamically changed.

As an embodiment, the value of K1 is configured by higher layer signaling.

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

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

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

As an example, the cellular link described in this application is a radio link between a terminal and a base station.

As an embodiment, the sidelink in the present application corresponds to PC (Proximity Communication) 5 port.

As an embodiment, the cellular link in this application corresponds to a Uu port.

As an example, the sidelink in this application is used for V2X communication.

As an example, the cellular link in the present application is used for cellular communication.

As an embodiment, the above phrase that the time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal means includes: there is no RE belonging to two of the K1 sub-signallings at the same time.

As an embodiment, the above phrase that the time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal means includes: and one multi-carrier symbol does not belong to the time domain resources respectively occupied by two sub-signaling in the K1 sub-signaling at the same time.

As an embodiment, the multicarrier symbol in this application is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

As an embodiment, the multi-Carrier symbol in this application is an SC-FDMA (Single-Carrier Frequency Division Multiple Access) symbol.

As an example, the multicarrier symbol in this application is an FBMC (Filter Bank Multi Carrier) symbol.

As an embodiment, the multicarrier symbol in this application is an OFDM symbol including a CP (Cyclic Prefix).

As an example, the multi-carrier symbol in this application is a DFT-s-OFDM (Discrete Fourier Transform spread Orthogonal Frequency Division Multiplexing) symbol including a CP.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture, as shown in fig. 2.

Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2.

FIG. 2 illustrates a diagram of a network architecture 200 for the 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) systems. 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, one UE241 in V2X communication with the UE201, an ng-RAN (next generation radio access network) 202, a 5gc (5G Core network )/EPC (Evolved Packet Core) 210, hss (Home Subscriber Server )/UDM (Unified Data Management) 220, and internet services 230. The 5GS/EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the 5GS/EPS provides packet switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit switched services or other cellular networks. The NG-RAN includes NR node bs (gnbs) 203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 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 terminology. The gNB203 provides the UE201 with an access point to the 5GC/EPC210. Examples of UEs 201 include cellular phones, smart phones, session Initiation Protocol (SIP) phones, laptops, personal Digital Assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband internet of things equipment, machine-type communication equipment, land vehicles, automobiles, wearable equipment, or any other similar functioning device. UE201 may also be referred to by those skilled in the art as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communications 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 terminology. The gNB203 is connected to the 5GC/EPC210 through an S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity)/AMF (Authentication Management domain)/SMF (Session Management Function) 211, other MME/AMF/SMF214, S-GW (serving Gateway)/UPF (User Plane Function) 212, and P-GW (Packet data Network Gateway)/UPF 213. The MME/AMF/SMF211 is a control node that handles signaling between the UE201 and the 5GC/EPC210. In general, the MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet protocol) packets are transported through the S-GW/UPF212, which S-GW/UPF212 itself is connected to the P-GW/UPF213. The P-GW provides UE IP address assignment as well as other functions. The P-GW/UPF213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a packet-switched streaming service.

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

As an embodiment, the UE241 corresponds to the second node in this application.

As an embodiment, the gNB203 corresponds to the third node in the present application.

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

For one embodiment, the air interface between the UE201 and the UE241 is a PC-5 interface.

As an embodiment, the radio link between the UE201 and the gNB203 is a cellular link.

As an embodiment, the radio link between the UE201 and the UE241 is a sidelink.

As an embodiment, the first node in this application is a terminal within the coverage of the gNB 203.

As an embodiment, the second node in this application is a terminal within the coverage of the gNB 203.

As an embodiment, the second node in this application is a terminal outside the coverage of the gNB 203.

For one embodiment, the UE201 and the UE241 support unicast transmission.

In one embodiment, broadcast transmission is supported between the UE201 and the UE 241.

In one embodiment, the UE201 and the UE241 support multicast transmission.

As an embodiment, the first node and the second node belong to one V2X Pair (Pair).

As an example, the first node is a car.

As one embodiment, the first node is a vehicle.

As an embodiment, the first node is an RSU (Road Side Unit).

For one embodiment, the first node is a group head of a terminal group.

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

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

As an embodiment, the second node is a vehicle.

As one example, the second node is a car.

As an embodiment, the second node is an RSU.

For one embodiment, the second node is a Group Header (Group Header) of a terminal Group.

As one embodiment, the first node has location capability.

As an embodiment, the second node has positioning capabilities.

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

As one embodiment, the second node has GPS capability.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300, fig. 3 showing the radio protocol architecture for the first communication node device (UE, RSU in gbb or V2X) and the second communication node device (gbb, RSU in UE or V2X), or the control plane 300 between two UEs, in three layers: layer 1, layer 2 and layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY301. Layer 2 (L2 layer) 305 is above the PHY301 and is responsible for the link between the first and second communication node devices and the two UEs through the 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 ciphering data packets and provides handoff support between second communication node devices to the first communication node device. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of 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 the various radio resources (e.g., resource blocks) in one cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. A RRC (Radio Resource Control) sublayer 306 in layer 3 (L3 layer) in the Control plane 300 is responsible for obtaining Radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second communication node device and the first communication node device. The radio protocol architecture of the user plane 350 comprises layer 1 (L1 layer) and layer 2 (L2 layer), the radio protocol architecture in the user plane 350 for the first and second communication node devices is substantially the same 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 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes a Service Data Adaptation Protocol (SDAP) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS streams and Data Radio Bearers (DRBs) to support Service diversity. Although not shown, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.).

As an example, the wireless protocol architecture in fig. 3 is applicable to the first node in this application.

As an example, the radio protocol architecture in fig. 3 is applicable to the second node in this application.

The radio protocol architecture of fig. 3 applies, as an example, to the third node in the present application.

For one embodiment, the first signaling is generated from the PHY301 or the PHY351.

For an embodiment, the first signaling is generated at the MAC352 or the MAC302.

As an embodiment, the first signaling is generated at the RRC306.

As an embodiment, any sub-signaling of the K1 sub-signaling is generated in the PHY301 or the PHY351.

As an embodiment, any sub-signaling in the K1 sub-signaling is generated in the MAC352 or the MAC302.

As an embodiment, any sub-signaling in the K1 sub-signaling is generated in the RRC306.

As an embodiment, any one of the K1 signals is generated in the PHY301 or the PHY351.

As an embodiment, any one of the K1 signals is generated at the MAC352, or the MAC302.

For one embodiment, the third signaling is generated from the PHY301 or the PHY351.

As an embodiment, the third signaling is generated in the MAC352 or the MAC302.

For one embodiment, the fourth signaling is generated from the PHY301 or the PHY351.

As an embodiment, the fourth signaling is generated in the MAC352 or the MAC302.

For one embodiment, the second signaling is generated from the PHY301 or the PHY351.

For one embodiment, the second signaling is generated in the MAC352 or the MAC302.

As an embodiment, the second signaling is generated at the RRC306.

Example 4

Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in fig. 4. Fig. 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.

The first communications 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.

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

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 a controller/processor 475. The controller/processor 475 implements the functionality of the L2 layer. In transmissions from the second communications device 410 to the first communications 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 communications 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 constellation 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. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate the physical channels that carry the time-domain multicarrier symbol streams. The multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream that is then provided to a different antenna 420.

In a transmission from the second communications apparatus 410 to the first communications apparatus 450, each receiver 454 receives a signal through its respective antenna 452 at the first communications apparatus 450. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is provided to a receive processor 456. The receive processor 456 and the multiple antenna receive processor 458 implement various signal processing functions of the L1 layer. A multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. Receive processor 456 converts the baseband multicarrier symbol stream after the receive analog precoding/beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered at a receive processor 456 and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to a 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. Memory 460 may be referred to as a computer-readable medium. In transmissions from the second communications device 410 to the second communications device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the core network. The upper layer packet is then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

In a transmission from the first communications device 450 to the second communications device 410, a data source 467 is used at the first communications device 450 to provide upper layer data packets to a controller/processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the send function at the second communications apparatus 410 described in the transmission from the second communications apparatus 410 to the first communications apparatus 450, the controller/processor 459 performs header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, performing L2 layer functions for the user plane and control plane. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to said second communication device 410. The transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming, by the multi-antenna transmit processor 457, and then the transmit processor 468 modulates the resulting spatial streams into multi-carrier/single-carrier symbol streams, which are provided to the different antennas 452 via the transmitter 454 after analog precoding/beamforming 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 that is provided to the antenna 452.

In a transmission from the first communication device 450 to the second communication device 410, the functionality at the second communication device 410 is similar to the receiving functionality 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 an rf signal through its respective antenna 420, converts the received rf signal to a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multiple antenna receive processor 472 collectively implement the functions of the L1 layer. The controller/processor 475 implements L2 layer functions. The controller/processor 475 may be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In transmission from the first communications device 450 to the second communications device 410, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the UE 450. Upper layer data packets from the controller/processor 475 may be provided to a core network.

As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, for use with the at least one processor, the first communication device 450 apparatus at least: sending a first signaling; sending K1 sub-signaling 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, the first bit block comprising a positive integer number of bits; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; and time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling.

As an embodiment, the first communication device 450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: sending a first signaling; sending K1 sub-signaling 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, the first bit block comprising a positive integer number of bits; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; and time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling.

As an embodiment, the second communication device 410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 410 means at least: receiving a first signaling; and receiving K1 sub-signaling and K1 signals, said K1 being an integer greater than 1; a first bit block is used to generate any one of the K1 signals, the first bit block comprising a positive integer number of bits; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; and time frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling.

As an embodiment, the second communication device 410 apparatus includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving a first signaling; and receiving K1 sub-signaling and K1 signals, said K1 being an integer greater than 1; a first bit block is used to generate any one of the K1 signals, the first bit block comprising a positive integer number of bits; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; and time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling.

As an embodiment, the second communication device 410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 410 means at least: sending a second signaling; and receiving fourth signaling in the target time unit; the second signaling is used to indicate K1 candidate sets of time-frequency resources, the K1 candidate sets of time-frequency resources being used for transmission of K1 signals, respectively; a first block of bits is used to generate any one of the K1 signals, the first block of bits comprising a positive integer number of bits; the receiver of the second signaling comprises a first node, the first node sends a first signaling, and the first node sends K1 sub-signaling and the K1 signals, wherein K1 is an integer greater than 1; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling; the first node receiving a third signaling and sending the fourth signaling in the target time unit; information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals respectively occupy K1 first-class time units, the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time units, and the second time unit is the second-class time unit which is positioned in the latest time domain in the K1 second-class time units; the first time unit is one of the K1 second-class time units except the second time unit; the first time unit is used to determine the target time unit; a receiver of the first signaling comprises a second node, the third node being non-co-located with the second node; the third signaling is used to determine that the first block of bits was received correctly.

As an embodiment, the second communication device 410 apparatus includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: sending a second signaling; and receiving fourth signaling in the target time unit; the second signaling is used to indicate K1 candidate sets of time-frequency resources, the K1 candidate sets of time-frequency resources being used for transmission of K1 signals, respectively; a first bit block is used to generate any one of the K1 signals, the first bit block comprising a positive integer number of bits; the receiver of the second signaling comprises a first node, the first node sends a first signaling, and the first node sends K1 sub-signaling and the K1 signals, wherein K1 is an integer greater than 1; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; time frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling; the first node receiving a third signaling and sending the fourth signaling in the target time unit; information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals respectively occupy K1 first-class time units, the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time units, and the second time unit is one of the K1 second-class time units which is positioned in the latest time domain; the first time unit is one of the K1 second-class time units except the second time unit; the first time unit is used to determine the target time unit; a receiver of the first signaling comprises a second node, the third node being non-co-located with the second node; the third signaling is used to determine that the first block of bits is correctly received.

As an embodiment, the first communication device 450 corresponds to a first node in the present application.

As an embodiment, the second communication device 410 corresponds to a second node in the present application.

As an embodiment, the second communication device 410 corresponds to a third node in the present application.

For one embodiment, the first communication device 450 is a UE.

For one embodiment, the second communication device 410 is a UE.

For one embodiment, the second communication device 410 is a base station.

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

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

For one embodiment, at least one of the antenna 452, the receiver 454, the multiple antenna receive processor 458, the receive processor 456, the controller/processor 459 is configured to receive third signaling; at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475 is configured to send third signaling.

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

For one embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459 is configured to receive second signaling; at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 is configured to send second signaling.

Example 5

Embodiment 5 illustrates a flow chart of the first signaling, as shown in fig. 5. In fig. 5, the first node U1 communicates with the second node U2 via a sidelink.

For theFirst node U1Transmitting a first signaling in step S10; in step S11, K1 sub-signals and K1 signals are transmitted.

For theSecond node U2Receiving a first signaling in step S20; k1 sub-signals and K1 signals are received in step S21.

In embodiment 5, a first block of bits is used to generate any one of the K1 signals, the first block of bits comprising a positive integer number of bits; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; and time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling.

As an embodiment, the K1 sub-signallings are respectively associated with the K1 signals, a given sub-signaling is any one of the K1 sub-signallings, the given sub-signaling is associated with a given signal of the K1 signals, and the given sub-signaling is used for indicating a redundancy version adopted by the given signal.

As a sub-embodiment of this embodiment, the K1 sub-signaling is respectively used to indicate K1 redundancy versions, the K1 redundancy versions are respectively used for generating the K1 signals, and at least two redundancy versions of the K1 redundancy versions are different.

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

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

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

As a sub-embodiment of this embodiment, the first identifier is a Layer-1 Destination identifier (Layer-1 Destination ID).

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

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

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

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

As a sub-embodiment of this embodiment, the first signaling is used for Resource Reservation (Resource Reservation).

As a sub-embodiment of this embodiment, the first signaling is used to indicate whether the first bit block is a Retransmission (Retransmission).

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.

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

As a sub-embodiment of this embodiment, the first signaling is used to indicate that the K1 sub-signaling exists.

As a sub-embodiment of this embodiment, the first signaling is used to indicate a Pattern (Pattern) of reference signals, and any one of the K1 signals is demodulated using the reference signals.

As an embodiment, any one of the K1 sub-signaling carries a first geographic identifier, and the geographic location of the first node U1 is used to determine the first geographic identifier.

As a sub-embodiment of this embodiment, said first geographical identification is a Zone ID (area identification).

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

As a sub-embodiment of this embodiment, the given sub-signaling is any one of the K1 sub-signaling.

As an additional embodiment of the sub-embodiment, the given sub-signaling is one of the K1 sub-signaling.

As an additional embodiment of this sub-embodiment, the given sub-signaling comprises a CSI Indication (Indication).

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

As an example of this subsidiary embodiment, said given sub-signalling comprises a CSI Request (Request).

As an example of this subsidiary embodiment, said CSI request is used to instruct said second node U2 to report CSI.

As an additional embodiment of the sub-embodiment, the given sub-signaling includes CBGTI (Code Block Group Transmission Indicator).

As an additional embodiment of this sub-embodiment, the given sub-signaling includes NACK distance (unacknowledged distance).

As an additional embodiment of this sub-embodiment, the given sub-signaling is used to instruct the second node U2 to determine whether to send a NACK (no-Acknowledgement) for the first bit block based on the distance from the first node U1.

As an additional embodiment of this sub-embodiment, the given sub-signaling includes HARQ Feedback Indication (Feedback Indication).

As a subsidiary embodiment of this sub-embodiment, said given sub-signalling is used to indicate whether said second node sends HARQ feedback for said first bit block.

As an embodiment, the K1 sub-signallings are respectively associated with the K1 signals; the time frequency resources occupied by the K1 signals respectively belong to K1 time frequency resource pools, and the first signaling is used for determining the K1 time frequency resource pools; the first sub-signaling is one of the K1 sub-signaling, the first signal is a signal of the K1 signals associated with the first sub-signaling, both the time-frequency resource occupied by the first sub-signaling and the time-frequency resource occupied by the first signal belong to the same time-frequency resource pool of the K1 time-frequency resource pools, and any two time-frequency resource pools of the K1 time-frequency resource pools are orthogonal in a 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.

As a sub-embodiment of this embodiment, the phrase that the demodulation reference signal associated with the first sub-signaling and the demodulation reference signal associated with the first signal are the same means includes: 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).

As a sub-embodiment of this embodiment, the phrase that the demodulation reference signal associated with the first sub-signaling and the demodulation reference signal associated with the first signal are the same means includes: 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).

As a sub-embodiment of this embodiment, the phrase that the demodulation reference signal associated with the first sub-signaling and the demodulation reference signal associated with the first signal are the same means includes: the first sub-signaling and the first signal are demodulated with demodulation reference signals on the same RE set, and the RE set comprises a positive integer number of REs.

Example 6

Embodiment 6 illustrates a flow chart of third signaling, as shown in fig. 6. In fig. 6, the first node U3 communicates with the second node U4 via a sidelink, and the first node U3 communicates with the third node N5 via a cellular link.

ForFirst node U3Receiving a second signaling in step S30; receiving a third signaling in step S31; transmitting fourth signaling in the target time unit in step S32;

forSecond node U4Transmitting a third signaling in step S40;

for theThird node N5Transmitting a second signaling in step S50; the fourth signaling is received in the target time unit in step S51.

In embodiment 6, information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals respectively occupy K1 first-class time units, the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time units, and the second time unit is the latest second-class time unit in the time domain in the K1 second-class time units; the first time unit is one of the K1 second-class time units except 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 block of bits is correctly received; the second signaling is used to indicate K1 candidate sets of time-frequency resources, the K1 candidate sets of time-frequency resources being used for transmission of the K1 signals, respectively.

As an embodiment, step S30 performed by the first node U3 is located before step S10 in embodiment 5.

As an example, steps S31 and S32 performed by the first node U3 are located after step S11 in example 5.

As an embodiment, the step S40 performed by the second node U4 is located after the step S21 in embodiment 5.

As an embodiment, step S50 performed by the third node is located before step S10 in embodiment 5 in the time domain.

As an embodiment, the step S51 performed by the third node is located after the step S11 in embodiment 5 in the time domain.

As an embodiment, the Physical layer Channel carrying the third signaling includes a PSFCH (Physical Sidelink Feedback Channel).

As an embodiment, a Physical layer Channel carrying the fourth signaling includes a PUSCH (Physical Uplink Shared Channel).

As an embodiment, the Physical layer Channel carrying the fourth signaling includes a PUCCH (Physical Uplink Control Channel).

As an embodiment, the fourth signaling is UCI (Uplink Control Information).

As an embodiment, any one of the K1 first-type time units is a Slot (Slot).

As an embodiment, any one of the K1 first-type time units is a Sub-slot (Sub-slot).

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

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

As an example, the above phrase that the first time unit is used to determine the meaning of the target time unit includes: the time interval between the first time unit and the target time unit is fixed.

As an example, the above phrase that the first time unit is used to determine the meaning of the target time unit includes: the time interval between the first time unit and the target time unit is configured by signaling, which is physical layer signaling or higher layer signaling.

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

As an embodiment, the second signaling is RRC signaling.

As an embodiment, the Format adopted by the second signaling is DCI Format 5.

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

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

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

As an embodiment, the third node N5 is a serving cell of the second node U4, and the second node U4 is a terminal performing V2X transmission with the first node.

As an embodiment, the third node N5 is a serving cell other than the serving cell of the second node U4, and the second node U4 is a terminal performing V2X transmission with the first node.

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

Example 7

Embodiment 7 illustrates a schematic diagram of K1 sub-signaling and K1 signals; as shown in fig. 7. In embodiment 7, the K1 sub-signalings are respectively associated with the K1 signals; the K1 sub-signaling is sequentially sent in the time domain, and the K1 signals are also sequentially sent in the time domain; the given sub-signaling is any one of the K1 sub-signaling, and the given signal is a signal related to the given sub-signaling in the K1 signals.

As an embodiment, the K1 sub-signaling is TDM (Time Division Multiplexing).

As an example, the K1 signals are TDM.

As an embodiment, the K1 sub-signals are K1 repeated transmissions for the sub-link control information.

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

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

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

As an embodiment, the time domain resource occupied by the given signal includes the time domain resource occupied by the given sub-signaling.

As an embodiment, the time domain resource occupied by the given sub-signaling includes a time domain resource occupied by the given signal.

As an embodiment, the sub-signaling # x and the sub-signaling # y are any two sub-signaling of the K1 sub-signaling, the sub-signaling # x is associated with the signal # x, the sub-signaling # y is associated with the 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.

As an embodiment, in the present application, a time domain resource occupied by the first signaling is earlier than a time domain resource occupied by any one of the K1 sub-signaling.

Example 8

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

As an embodiment, the control information set constitutes all the fields included by one SCI.

As an example, any one of the Q1 fields is a Field (Field) in the SCI.

As an embodiment, any one of the Q2 message groups is a field in SCI.

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

As an embodiment, any one of the K1 sub-signaling carries the Q2 information groups.

As an embodiment, one of the Q1 sets of information is used to indicate layer-one endpoint identification.

As an embodiment, there is one information group in the Q2 information groups used to indicate the Zone ID.

Example 9

Embodiment 9 illustrates a schematic diagram of a demodulation reference signal according to an embodiment of the present application, as shown in fig. 9. In fig. 9, a sub-signaling # m and a sub-signaling # n are two different sub-signaling in the K1 sub-signaling in the present application, the sub-signaling # m and the sub-signaling # n are respectively associated with a signal # m and a signal # n in the K1 signals, the sub-signaling # m and the signal # m are both decoded by using a first demodulation reference signal, and the sub-signaling # n and the signal # n are both decoded by using a second demodulation reference signal.

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

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

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

As an embodiment, the first demodulation reference signal can be used as a demodulation of the sub-signaling # m and the signal # m.

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

As an embodiment, the second demodulation reference signal can be used as a demodulation of the sub-signaling # n and the signal # n.

As one embodiment, the first demodulation reference signal is used for decoding on a sidelink.

As an embodiment, the second demodulation reference signal is used for decoding on a sidelink.

Example 10

Embodiment 10 illustrates schematic diagrams of third signaling and fourth signaling according to an embodiment of the application, as shown in fig. 10. In fig. 10, the K1 signals respectively occupy K1 first-type time units, where the K1 first-type time units are respectively related to K1 second-type time units, and a second node in the present application determines, in an L-th first-type time unit of the K1 first-type time units, that the first bit block in the present application is correctly received, sends a third signaling in an L-th second-type time unit corresponding to the L-th first-type 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.

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

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

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

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

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

As an embodiment, the target time unit is a micro-slot.

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

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

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

As a sub-embodiment of this embodiment, the first delay is equal to a positive integer number of minislots.

As a sub-embodiment of this embodiment, the time of the interval between the starting time of the L-th second-type time unit and the starting time of the target time unit is equal to the first delay.

As a sub-embodiment of this embodiment, the time interval between the starting time of the L-th first-class time unit and the starting time of the target time unit is equal to the first delay.

As a sub-embodiment of this embodiment, a time interval from a starting time of the occupied time domain resource of the first signaling to a starting time of the target time unit is equal to the first delay.

As a sub-embodiment of this embodiment, a time interval from a starting time of the occupied time domain resource of the second signaling to a starting time of the target time unit is equal to the first delay.

As an embodiment, the lth time unit of the second type is the first time unit in this application.

Example 11

Embodiment 11 illustrates a block diagram of the structure in a first node, as shown in fig. 11. In fig. 11, a first node 1100 comprises a first transceiver 1101 and a second transceiver 1102.

A first transceiver 1101 that transmits a first signaling;

a second transceiver 1102, configured to send K1 sub-signaling and K1 signals, where K1 is an integer greater than 1;

in embodiment 11, a first bit block is used to generate any one of the K1 signals, the first bit block comprising a positive integer number of bits; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; and time frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling.

As an embodiment, the first signaling is used to indicate a first identity used to determine an initial value of a scrambling sequence employed by each of the K1 signals.

As an embodiment, any one of the K1 sub-signaling carries a first geographic identifier, and the geographic location of the first node is used to determine the first geographic identifier.

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; information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals respectively occupy K1 first-class time units, the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time units, and the second time unit is the second-class time unit which is positioned in the latest time domain in the K1 second-class time units; the first time unit is one of the K1 second-class time units except the second time unit; the first time unit is used to determine the target time unit; the receiver of the fourth signaling comprises a third node, the receiver of the first signaling comprises a second node, and the third node is non-co-located with the second node; the third signaling is used to determine that the first block of bits is correctly received.

For one embodiment, the first transceiver 1101 receives a second signaling; the second signaling is used to indicate K1 candidate sets of time-frequency resources, the K1 candidate sets of time-frequency resources being used for transmission of the K1 signals, respectively.

For one embodiment, the first transceiver 1101 includes at least the first 6 of the antenna 452, the receiver/transmitter 454, the multi-antenna receive processor 458, the receive processor 456, the multi-antenna transmit processor 457, the transmit processor 468, and the controller/processor 459 of embodiment 4.

For one embodiment, the first transceiver 1102 comprises at least the first 6 of the antenna 452, the receiver/transmitter 454, the multi-antenna receive processor 458, the receive processor 456, the multi-antenna transmit processor 457, the transmit processor 468, and the controller/processor 459 of embodiment 4.

Example 12

Embodiment 12 illustrates a block diagram of the structure in a second node, as shown in fig. 12. In fig. 12, the second node 1200 comprises a first receiver 1201 and a third transceiver 1202.

A first receiver 1201 that receives a first signaling;

a third transceiver 1202 that receives K1 sub-signaling and K1 signals, where K1 is an integer greater than 1;

in embodiment 12, a first block of bits is used to generate any one of the K1 signals, the first block of bits comprising a positive integer number of bits; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; and time frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling.

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

As an embodiment, the K1 sub-signalings are respectively associated with the K1 signals; the time frequency resources occupied by the K1 signals respectively belong to K1 time frequency resource pools, and the first signaling is used for determining the K1 time frequency resource pools; the first sub-signaling is one of the K1 sub-signaling, the first signal is a signal of the K1 signals associated with the first sub-signaling, both the time-frequency resource occupied by the first sub-signaling and the time-frequency resource occupied by the first signal belong to the same time-frequency resource pool of the K1 time-frequency resource pools, and any two time-frequency resource pools of the K1 time-frequency resource pools are orthogonal in a 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.

As an embodiment, the third transceiver 1202 transmits third signaling; information bits carried by the third signaling are used to generate a fourth signaling; the receiver of the third signaling comprises a first node that sends the fourth signaling in a target time unit; the K1 signals respectively occupy K1 first-class time units, the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time units, and the second time unit is one of the K1 second-class time units which is positioned in the latest time domain; the first time unit is one of the K1 second-class time units except the second time unit; the first time unit is used to determine the target time unit; a receiver of the fourth signaling comprises a third node that is non-co-located with the second node; the third signaling is used to determine that the first block of bits was received correctly.

For one embodiment, the first receiver 1201 includes at least the first 4 of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, and the controller/processor 475 in embodiment 4.

For one embodiment, the third transceiver 1202 includes at least the first 6 of the antenna 420, the transmitter/receiver 418, the multi-antenna transmit processor 471, the transmit processor 416, the multi-antenna receive processor 472, the receive processor 470, and the controller/processor 475 of embodiment 4.

Example 13

Embodiment 13 illustrates a block diagram of the structure in a third node, as shown in fig. 13. In fig. 13, the third node 1300 includes a first transmitter 1301 and a second receiver 1302.

A first transmitter 1301 which transmits the second signaling;

a second receiver 1302 for receiving a fourth signaling in a target time unit;

in embodiment 13, the second signaling is used to indicate K1 candidate time-frequency resource sets, where the K1 candidate time-frequency resource sets are respectively used for transmission of K1 signals; a first bit block is used to generate any one of the K1 signals, the first bit block comprising a positive integer number of bits; the receiver of the second signaling comprises a first node, the first node sends a first signaling, and the first node sends K1 sub-signaling and the K1 signals, wherein K1 is an integer greater than 1; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling; the first node receiving a third signaling and sending the fourth signaling in the target time unit; information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals respectively occupy K1 first-class time units, the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time units, and the second time unit is one of the K1 second-class time units which is positioned in the latest time domain; the first time unit is one of the K1 second-class time units except the second time unit; the first time unit is used to determine the target time unit; a receiver of the first signaling comprises a second node, the third node being non-co-located with the second node; the third signaling is used to determine that the first block of bits is correctly received.

For one embodiment, the first transmitter 1301 includes at least the first 4 of the antenna 420, the transmitter 418, the multi-antenna transmission processor 471, the transmission processor 416, and the controller/processor 475 in embodiment 4.

For one embodiment, the second receiver 1302 includes at least the first 4 of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, and the controller/processor 475 of embodiment 4.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the foregoing embodiments may be implemented in the form of hardware, or may be implemented in the form of software functional modules, and the present application is not limited to any specific combination of software and hardware. First node and second node in this application include but not limited to cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, vehicles, vehicle, RSU, aircraft, unmanned aerial vehicle, wireless communication equipment such as remote control plane. The base station in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, an eNB, a gNB, a transmission and reception node TRP, a GNSS, a relay satellite, a satellite base station, an over-the-air base station, an RSU, and other wireless communication devices.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like 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 configured for wireless communication, comprising:

a first transceiver to transmit a first signaling;

wherein a first block of bits is used to generate any one of the K1 signals, the first block of bits comprising a positive integer number of bits; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; time frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling; the first signaling and the K1 sub-signaling are used together to schedule transmission of the first bit block; the K1 signals share one HARQ process number; and the physical layer channel carrying any one of the K1 sub-signaling comprises PSSCH.

2. The first node of claim 1, wherein the K1 sub-signalings are respectively associated with the K1 signals, a given sub-signaling is any one of the K1 sub-signalings, the given sub-signaling is associated with a given signal of the K1 signals, and the given sub-signaling is used for indicating a redundancy version adopted by the given signal.

3. The first node according to claim 1 or 2, characterized in that said first signalling is used to indicate a first identity which is used to determine an initial value of a scrambling sequence employed by each of said K1 signals.

4. The first node according to any of claims 1 to 3, wherein any one of the K1 sub-signalings carries a first geographical identity, and wherein the geographical location of the first node is used to determine the first geographical identity.

5. The first node according to any of claims 1 to 4, wherein the K1 sub-signalings are respectively associated with the K1 signals; the time frequency resources occupied by the K1 signals respectively belong to K1 time frequency resource pools, and the first signaling is used for determining the K1 time frequency resource pools; the first sub-signaling is one of the K1 sub-signaling, the first signal is a signal of the K1 signals associated with the first sub-signaling, both the time-frequency resource occupied by the first sub-signaling and the time-frequency resource occupied by the first signal belong to the same time-frequency resource pool of the K1 time-frequency resource pools, and any two time-frequency resource pools of the K1 time-frequency resource pools are orthogonal in a 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 of any of claims 1-5, wherein the first transceiver receives second signaling; the second signaling is used to indicate K1 candidate sets of time-frequency resources, the K1 candidate sets of time-frequency resources being used for transmission of the K1 signals, respectively.

7. The first node according to any of claims 1-6, wherein a given sub-signaling is one of the K1 sub-signaling, the given sub-signaling comprising a CSI request.

8. The first node according to any of claims 1-7, wherein a given sub-signaling is one of the K1 sub-signaling, the given sub-signaling being used to instruct a recipient of the first signaling to decide whether to send a NACK for the first bit block based on a distance to the first node.

9. A second node configured for wireless communication, comprising:

a first receiver receiving a first signaling;

wherein a first block of bits is used to generate any one of the K1 signals, the first block of bits comprising a positive integer number of bits; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling; the first signaling and the K1 sub-signaling are used together to schedule transmission of the first block of bits; the K1 signals share one HARQ process number; and the physical layer channel carrying any one of the K1 sub-signaling comprises PSSCH.

10. A third node for wireless communication, comprising:

a first transmitter for transmitting a second signaling;

a second receiver receiving a fourth signaling in the target time unit;

wherein the second signaling is used to indicate K1 candidate sets of time-frequency resources, the K1 candidate sets of time-frequency resources being used for transmission of K1 signals, respectively; a first block of bits is used to generate any one of the K1 signals, the first block of bits comprising a positive integer number of bits; the receiver of the second signaling comprises a first node, the first node sends a first signaling, and the first node sends K1 sub-signaling and the K1 signals, wherein K1 is an integer greater than 1; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling; the first node receiving a third signaling and sending the fourth signaling in the target time unit; information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals respectively occupy K1 first-class time units, the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time units, and the second time unit is the second-class time unit which is positioned in the latest time domain in the K1 second-class time units; the first time unit is one of the K1 second-class time units except the second time unit; the first time unit is used to determine the target time unit; a receiver of the first signaling comprises a second node, the third node being non-co-located with the second node; the third signaling is used to determine that the first block of bits is correctly received; the first signaling and the K1 sub-signaling are used together to schedule transmission of the first bit block; the K1 signals share one HARQ process number; and the physical layer channel carrying any one of the K1 sub-signaling comprises PSSCH.

11. A method in a first node used for wireless communication, comprising:

sending a first signaling;

wherein a first block of bits is used to generate any one of the K1 signals, the first block of bits comprising a positive integer number of bits; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling; the first signaling and the K1 sub-signaling are used together to schedule transmission of the first bit block; the K1 signals share one HARQ process number; and the physical layer channel carrying any one of the K1 sub-signaling comprises PSSCH.

12. A method in a second node used for wireless communication, comprising:

receiving a first signaling;

13. A method in a third node used for wireless communication, comprising:

sending a second signaling;

receiving a fourth signaling in the target time unit;

wherein the second signaling is used to indicate K1 candidate sets of time-frequency resources, the K1 candidate sets of time-frequency resources being used for transmission of K1 signals, respectively; a first bit block is used to generate any one of the K1 signals, the first bit block comprising a positive integer number of bits; the receiver of the second signaling comprises a first node, the first node sends a first signaling, and the first node sends K1 sub-signaling and the K1 signals, wherein K1 is an integer greater than 1; the first signaling is used for indicating time-frequency resources occupied by any one of the K1 sub-signaling; any one of the first signaling and the K1 sub-signaling is associated with the first bit block; time-frequency resources occupied by any two sub-signaling in the K1 sub-signaling are orthogonal, and the first signaling and any one sub-signaling in the K1 sub-signaling are dynamic signaling; the first node receiving a third signaling and sending the fourth signaling in the target time unit; information bits carried by the third signaling are used to generate the fourth signaling; the K1 signals respectively occupy K1 first-class time units, the K1 first-class time units are respectively related to K1 second-class time units, the third signaling occupies the first time units, and the second time unit is the second-class time unit which is positioned in the latest time domain in the K1 second-class time units; the first time unit is one of the K1 second-class time units except the second time unit; the first time unit is used to determine the target time unit; a receiver of the first signaling comprises a second node, the third node being non-co-located with the second node; the third signaling is used to determine that the first block of bits is correctly received; the first signaling and the K1 sub-signaling are used together to schedule transmission of the first bit block; the K1 signals share one HARQ process number; and the physical layer channel carrying any one of the K1 sub-signaling comprises PSSCH.