CN114070362A

CN114070362A - Method and apparatus in a node used for wireless communication

Info

Publication number: CN114070362A
Application number: CN202010767931.XA
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2022-02-18
Anticipated expiration: 2040-08-03
Also published as: CN116318277A; CN114070362B

Abstract

A method and apparatus in a node used for wireless communication is disclosed. The first node performs a first access detection in a first sub-band using the target multi-antenna related parameters and transmits a first signal in a first time-frequency resource block. The first time-frequency resource block belongs to a first time window in a time domain; a first time sub-window belongs to the first time window; when the target multi-antenna related parameter is a second multi-antenna related parameter, the first time sub-window is shared to the target receiver of the first signal for transmitting a first type of signal; when the target multi-antenna related parameter is a third multi-antenna related parameter, the first time sub-window is not shared to the target receiver of the first signal for transmitting the first type of signal. By the method, the fairness of channel access can be enhanced, and interference to other nodes can be avoided.

Description

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 an unlicensed spectrum-related transmission scheme and apparatus 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 Radio interface (NR) technology (or fine Generation, 5G) is decided over 72 sessions of 3GPP (3rd Generation Partner Project) RAN (Radio Access Network), and standardization Work on NR is started over WI (Work Item) where NR passes through 75 sessions of 3GPP RAN.

One key technology for NR is to support beam-based signal transmission, and its main application scenario is to enhance the coverage of NR devices operating in the millimeter wave frequency band (e.g., greater than 6 GHz). In addition, beam-based transmission techniques are also required to support large-scale antennas at low frequency bands (e.g., less than 6 GHz). Through the weighting process of the antenna array, the rf signal forms a stronger beam in a specific spatial direction, and the rf signal is weaker in other directions. After the operations of beam measurement, beam feedback and the like, the beams of the transmitter and the receiver can be accurately aligned to each other, so that signals are transmitted and received with stronger power, and the coverage performance is improved. The beam measurement and feedback of the NR system operating in the millimeter wave band may be accomplished by a plurality of synchronous broadcast Signal blocks (SS/PBCH blocks, SSBs) and Channel State Information-Reference signals (CSI-RS). Different SSBs or CSI-RSs may use different beams for transmission, and a User Equipment (UE) measures an SSB or CSI-RS sent by a gNB (next generation Node B) and feeds back an SSB index or a CSI-RS resource number to complete beam alignment.

In conventional cellular systems, data transmission can only take place over licensed spectrum, however, with the dramatic increase in traffic, especially in some urban areas, licensed spectrum may be difficult to meet traffic demands. 3GPP Release 17 will consider extending the application of NR to unlicensed spectrum above 52.6 GHz. To ensure compatibility with other access technologies over unlicensed spectrum, LBT (Listen Before Talk) techniques are used to avoid interference due to multiple transmitters occupying the same frequency resources at the same time. For unlicensed spectrum above 52.6GHz, directional lbt (directional lbt) techniques are preferably used to avoid interference due to the significant directivity of beam-based signal transmission.

In the Cat4 LBT (class four LBT, Category 4 LBT, see 3GPP TR36.889) procedure of LTE and NR, a transmitter (base station or user equipment) first performs energy detection for a delay period (Defer Duration), and if the detection result is channel idle, performs backoff (backoff) and performs energy detection within the backoff time. The backoff time is counted in CCA (Clear Channel Assessment) time slot periods, and the number of backoff time slot periods is obtained by the transmitter randomly selecting in a CWS (Contention Window Size). Thus, the duration of Cat4 LBT is uncertain. Cat 2 LBT (second class of LBT, Category 2 LBT, see 3GPP TR36.889) is another type of LBT. The Cat 2 LBT determines whether the channel is idle by evaluating the energy level in a specific time period. The duration of Cat 2 LBT is determined. A similar mechanism is employed in NR. When the Cat4 LBT is used for downlink, it is also called Type 1 downlink channel access procedure (Type 1 downlink channel access procedure); when the Cat4 LBT is used for uplink, it is also called Type 1 uplink channel access procedure (Type 1 uplink channel access procedure); when the Cat 2 LBT is used for downlink, it is also called Type 2 downlink channel access procedure (Type 2 downlink channel access procedure) and when the Cat 2 LBT is used for uplink, it is also called Type 2 uplink channel access procedure (Type 2 uplink channel access procedure). The specific definition may refer to 3gpp TS37.213, Cat4 LBT in this application is also used to indicate a type 1 downlink channel access procedure or a type 1 uplink channel access procedure, and Cat 2 LBT in this application is also used to indicate a type 2 downlink channel access procedure or a type 2 uplink channel access procedure.

For Omni-Directional (LBT) or Quasi-Omni-Directional (Quasi-Omni-Directional) LBT, after LBT succeeds, a node can send wireless signals in any direction in Omni-Directional or Quasi-Omni coverage; for directional LBT, when LBT succeeds, the wireless signals in the direction covered by the directional LBT can be transmitted. However, directional LBT is more likely to succeed because either omni-directional LBT or quasi-omni-directional LBT is affected by wireless signals in all directions, whereas directional LBT is affected by wireless signals in only some directions. In this application, "LBT successful" is used to indicate that the LBT result is channel idle, and "LBT failed" is used to indicate that the LBT result is channel busy.

In NR rel.16, after LBT success, the gNB or UE may occupy the Channel for a period of Time called Channel Occupancy Time (COT). NR rel.16 supports shared COT, i.e.: the COT acquired by the gNB may be shared with the UE, and the COT acquired by the UE may be shared with the gNB. Within the shared COT, the gNB and the UE may perform no LBT or Cat 2 LBT without performing Cat4 LBT before transmitting signals.

Disclosure of Invention

The inventors have found through research that the directional LBT technique is beneficial to improve the spectrum multiplexing efficiency and transmission performance of NR systems operating on unlicensed spectrum. However, the result of directional LBT reflects only the channel occupancy in the partial spatial direction. Whether and how COTs after a directional LBT can be shared is a problem to be solved.

In view of the above, the present application discloses a solution. It should be noted that, although the above description uses the scenario of air interface transmission between the cellular network gNB and the UE over the unlicensed spectrum as an example, the present application is also applicable to other communication scenarios (for example, a wireless local area network scenario, a sidelink transmission scenario between the UE and the UE, etc.), and is also applicable to the licensed spectrum, and similar technical effects are achieved. Furthermore, the adoption of a unified solution in different scenarios (including but not limited to cellular networks, wireless local area networks, sidelink transmissions, licensed spectrum and unlicensed spectrum) also helps to reduce hardware complexity and cost. Without conflict, embodiments and features in embodiments in a first node of the present application may be applied to a second node and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

As an example, the term (telematics) in the present application is explained with reference to the definition of the specification protocol TS36 series of 3 GPP.

As an example, the terms in the present application are explained with reference to the definitions of the 3GPP specification protocol TS38 series.

As an example, the terms in the present application are explained with reference to the definitions of the 3GPP specification protocol TS37 series.

As an example, the terms in the present application are explained with reference to the definition of the specification protocol of IEEE (Institute of Electrical and Electronics Engineers).

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

performing a first access detection at a first sub-band using the target multi-antenna related parameters;

transmitting a first signal in a first time-frequency resource block using a first multi-antenna related parameter;

wherein the first access detection is used to determine that the first sub-band may be used to transmit the first signal; the first time-frequency resource block belongs to a first time window in a time domain; a first time sub-window belongs to the first time window, and the starting time of the first time sub-window is not earlier than the ending time of the first time-frequency resource block; the target multi-antenna related parameter is used to determine whether the first time sub-window is shared with a target recipient of the first signal for transmitting a first type of signal; when the target multi-antenna related parameter is a second multi-antenna related parameter, the first time sub-window is shared to the target receiver of the first signal for transmitting the first type of signal; when the target multi-antenna related parameter is a third multi-antenna related parameter, the first time sub-window is not shared to the target receiver of the first signal for transmitting the first type of signal.

As an embodiment, the characteristics of the above method include: the first access detection is LBT, the first time window is COT after LBT success, the first time sub-window is a time resource in COT shared to the target recipient of the first signal; the sentence "the first temporal sub-window is shared with the target recipient of the first signal for transmitting the first type of signal" comprises: the target recipient of the first signal may transmit the first type of signal within the first time sub-window and need not perform a Cat4 LBT prior to transmitting the first type of signal.

As an embodiment, the characteristics of the above method include: the first multi-antenna related parameter comprises a first transmit beam; the second multi-antenna related parameter comprises a first receive beam; the third multi-antenna related parameter comprises a second receive beam; the first receive beam and the second receive beam are different.

As an embodiment, the characteristics of the above method include: the first transmit beam and the second receive beam have different spatial coverage.

As an example, the benefits of the above method include: whether the COT can be shared or not is related to a receiving beam of the LBT, and the gNB and the UE can determine whether the COT acquired by a specific beam can be shared or not according to the coverage range of the beam, so that the interference to other nodes caused by unlimited COT sharing is avoided.

According to an aspect of the application, the method is characterized in that the spatial direction of the second multi-antenna related parameter comprises a spatial direction of the third multi-antenna related parameter.

As an embodiment, the characteristics of the above method include: the second multi-antenna related parameter is a wide beam; the third multi-antenna related parameter is a narrow beam.

As an embodiment, the characteristics of the above method include: the second multi-antenna related parameter is an omni-directional beam or a quasi-omni-directional beam; the third multi-antenna related parameter is a directional beam.

As an embodiment, the characteristics of the above method include: the spatial direction of the second multi-antenna related parameter comprises the spatial direction of the first multi-antenna related parameter.

As an example, the benefits of the above method include: the perceived spatial direction under the narrow beam LBT is limited, and the first node cannot ensure that the perceived direction of the LBT includes the spatial direction of the first transmission beam, so the result of the narrow beam LBT cannot reflect the channel occupancy condition in the spatial direction of the first transmission beam. By the above method, when an LBT that acquires a COT is a wide beam, the COT may be shared to the target recipient of the first signal; when an LBT that acquires a COT is a narrow beam, the COT cannot be shared to the target recipient of the first signal. The above method may avoid interference to other nodes within a shared COT by the target recipient of the first signal.

As an example, the benefits of the above method include: narrow beam LBT is easier to succeed than wide beam LBT, if the first node acquires COT using narrow beam LBT and shares COT to the target recipient of the first signal, the target recipient may transmit the first type signal using a relatively wider beam without LBT, which will cause unfairness of contention for channel access in unlicensed spectrum, i.e. using wide beam transmission using narrow beam sensing. The above approach may avoid such unfairness of channel access.

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

receiving a first information block;

wherein the first information block is used to determine the target multi-antenna related parameter from a set of candidate multi-antenna related parameters, the set of candidate multi-antenna related parameters comprising the second multi-antenna related parameter and the third multi-antenna related parameter.

According to one aspect of the application, the above method is characterized in that the first signal comprises a second information block, the second information block being used to indicate whether the first time sub-window is shared to a target recipient of the first signal for transmitting the first type of signal.

receiving a third information block;

wherein the third information block is used to determine the first multi-antenna related parameter and the first time-frequency resource block.

According to an aspect of the application, the above method is characterized in that the first node autonomously determines the target multiple-antenna related parameter from the second multiple-antenna related parameter and the third multiple-antenna related parameter.

As an embodiment, the characteristics of the above method include: the first channel measurement result is used to determine the target multi-antenna related parameter from the set of candidate multi-antenna related parameters.

As an example, the benefits of the above method include: the first node autonomously selects whether to share a COT to the target recipient of the first signal. When the spatial interference is not serious, the first node selects a second multi-antenna related parameter as the target multi-antenna related parameter, and the COT is shared at the moment; when the spatial interference is severe, the first node selects a third multi-antenna related parameter as the target multi-antenna related parameter, and at this time, the COT is not shared. The method can obtain better compromise in two aspects of improving the LBT success rate and sharing the COT to reduce the LBT overhead.

According to an aspect of the application, the above method is characterized in that the first multiple antenna related parameter is used for determining the third multiple antenna related parameter.

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

receiving a first signal in a first time-frequency resource block;

transmitting a first type of signal in a first time sub-window; or, abstaining from transmitting the first type of signal in the first time sub-window;

wherein a first multi-antenna related parameter is used for transmitting the first signal; target multi-antenna related parameters are used to perform a first access detection at a first sub-band, the first access detection being used to determine that the first sub-band may be used to transmit the first signal; the first time-frequency resource block belongs to a first time window in a time domain; a first time sub-window belongs to the first time window, and the starting time of the first time sub-window is not earlier than the ending time of the first time-frequency resource block; the target multi-antenna related parameter is used to determine whether the first time sub-window is shared with a target recipient of the first signal for transmitting a first type of signal; when the target multi-antenna related parameter is a second multi-antenna related parameter, the first time sub-window is shared to the target receiver of the first signal for transmitting the first type of signal; when the target multi-antenna related parameter is a third multi-antenna related parameter, the first time sub-window is not shared to the target receiver of the first signal for transmitting the first type of signal.

transmitting a first information block;

transmitting the third information block;

According to an aspect of the application, the above method is characterized in that the performer of the first access detection autonomously determines the target multi-antenna related parameter from the second multi-antenna related parameter and the third multi-antenna related parameter.

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

a first receiver performing a first access detection in a first sub-band using a target multi-antenna related parameter;

a first transmitter for transmitting a first signal in a first time-frequency resource block using a first multi-antenna related parameter;

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

a second receiver that receives a first signal in a first time-frequency resource block;

a second transmitter for transmitting the first type of signal in a first time sub-window; or, abstaining from transmitting the first type of signal in the first time sub-window;

As an example, the present application has the following advantages:

the situation that the gNB or the UE adopts narrow beam sensing but shares the signal to the UE at the other end or the gNB adopts wide beam to send the signal is avoided, and the fairness of the access of the unlicensed spectrum channel is ensured;

for the COT acquired by the gNB or the UE, since the coverage of the beam of the UE or the gNB on the other end cannot be accurately known, the COT can be shared to the UE or the gNB only when the receiving beam of the LBT acquiring the COT is wide enough, and interference to other nodes can be avoided;

allowing the UE or the gNB to autonomously select from wide-beam LBT (corresponding to shared COT) and narrow-beam LBT (for not shared COT), a better tradeoff between LBT success rate and LBT overhead can be achieved.

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 of 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 a radio protocol architecture of a user plane and a 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 present application;

FIG. 5 shows a wireless signal transmission flow diagram according to an embodiment of the present application;

fig. 6 shows a schematic diagram of time resources occupied by a first access detection, a first time window, a first time-frequency resource block and a first time sub-window according to an embodiment of the present application;

fig. 7 shows a schematic diagram of time resources occupied by a first time window, a first time-frequency resource block, a second access detection, a first type of signal and a first time sub-window according to an embodiment of the present application;

fig. 8 shows a schematic beam width diagram of a first receive beam and a second receive beam of the first node and a first transmit beam of the second node according to an embodiment of the application;

fig. 9 shows a schematic diagram of time resources occupied by a first access detection, a first time-frequency resource block, a first time window, a second information block and a first time sub-window according to an embodiment of the present application;

FIG. 10 shows a schematic diagram of a first type of channel sensing according to an embodiment of the present application;

FIG. 11 shows a block diagram of a processing arrangement for use in the first node;

fig. 12 shows a block diagram of a processing means for use in the second node.

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 according to an embodiment of the present application, as shown in fig. 1. In fig. 1, each block represents a step. In particular, the order of steps in blocks does not represent a particular chronological relationship between the various steps. In embodiment 1, a first node in the present application performs a first access detection in a first sub-band using a target multiple antenna related parameter in step 101, and transmits a first signal in a first time-frequency resource block using the first multiple antenna related parameter in step 102. Wherein the first access detection is used to determine that the first sub-band may be used to transmit the first signal; the first time-frequency resource block belongs to a first time window in a time domain; a first time sub-window belongs to the first time window, and the starting time of the first time sub-window is not earlier than the ending time of the first time-frequency resource block; the target multi-antenna related parameter is used to determine whether the first time sub-window is shared with a target recipient of the first signal for transmitting a first type of signal; when the target multi-antenna related parameter is a second multi-antenna related parameter, the first time sub-window is shared to the target receiver of the first signal for transmitting the first type of signal; when the target multi-antenna related parameter is a third multi-antenna related parameter, the first time sub-window is not shared to the target receiver of the first signal for transmitting the first type of signal.

For one embodiment, the first signal comprises a baseband signal.

As one embodiment, the first signal comprises a wireless signal.

As one embodiment, the first signal is transmitted on a SideLink (SideLink).

As one embodiment, the first signal is transmitted on an UpLink (UpLink).

For one embodiment, the first signal is transmitted on a DownLink (DownLink).

As one embodiment, the first signal is transmitted on a Backhaul link (Backhaul).

As an embodiment, the first signal is transmitted over a Uu interface.

As an example, the first signal is transmitted through a PC5 interface.

As an embodiment, the first signal carries a Transport Block (TB).

As an embodiment, the first signal carries one CB (Code Block).

As an embodiment, the first signal carries a CBG (Code Block Group).

For one embodiment, the first signal includes control information.

As an example, the first signal includes SCI (Sidelink Control Information).

For one embodiment, the first signal includes one or more fields in one SCI.

For one embodiment, the first signal includes one or more fields in a SCI format.

As an embodiment, the first signal includes UCI (Uplink Control Information).

For one embodiment, the first signal includes one or more fields in a UCI.

As an embodiment, the first signal includes one or more fields in a UCI format.

As an embodiment, the first signal includes DCI (Downlink Control Information).

For one embodiment, the first signal includes one or more fields in one DCI.

For one embodiment, the first signal includes one or more fields in one DCI format.

As one embodiment, the first signal includes a Physical Uplink Shared Channel (PUSCH).

As an embodiment, the first signal includes a Physical Uplink Control Channel (PUCCH).

As an embodiment, the first signal includes a Physical Downlink Shared Channel (PDSCH).

As an embodiment, the first signal includes a Physical Downlink Control Channel (PDCCH).

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

As an embodiment, the first signal includes a Physical Sidelink Shared Channel (psch).

As an embodiment, the first signal includes a Physical Sidelink Feedback Channel (PSFCH).

As one embodiment, the first signal is transmitted in a licensed spectrum.

As one embodiment, the first signal is transmitted in an unlicensed spectrum.

For one embodiment, the first signal includes an uplink reference signal.

For one embodiment, the first signal includes a downlink reference signal.

For one embodiment, the first signal includes a secondary link reference signal.

As one embodiment, the first Signal includes a Demodulation Reference Signal (DMRS).

As one embodiment, the first Signal includes a Sounding Reference Signal (SRS).

As one embodiment, the first signal includes an upstream signal Configured with a Grant (Configured Grant).

For one embodiment, the first signal comprises a dynamically scheduled uplink signal.

For one embodiment, the first signal includes a semi-statically scheduled uplink signal.

As one embodiment, the first signal includes a Configured granted PUSCH (CG-PUSCH).

As one embodiment, the first signal comprises a dynamically scheduled PUSCH.

As one embodiment, the first signal includes a semi-statically scheduled PUSCH.

As an embodiment, the first signal includes a group Common pdcch (group Common pdcch).

As an embodiment, the first signal includes DCI format 2_0, and the definition of DCI format 2_0 refers to 3GPP TS 38.212.

For one embodiment, the first multi-antenna related parameter includes a spatial domain filter (spatial domain filter).

For one embodiment, the first multi-antenna related parameter includes a tci (transmission configuration indicator).

For one embodiment, the first multi-antenna related parameter includes a Spatial correlation (Spatial correlation) parameter.

For one embodiment, the first multi-antenna related parameters include QCL parameters.

As an embodiment, the first multi-antenna related parameter comprises a transmit beam.

For one embodiment, the first multi-antenna related parameter comprises a receive beam.

For one embodiment, the first multi-antenna related parameter includes a spatial transmit filter.

For one embodiment, the first multi-antenna related parameter includes a spatial receive filter.

For one embodiment, the first multi-antenna correlation parameter includes a Spatial correlation (Spatial correlation) relationship with a reference signal.

For one embodiment, the first multi-antenna related parameter includes a QCL relationship with a reference signal.

As a sub-embodiment of the above-mentioned embodiments, the one reference signal includes one of { SSB, CSI-RS, SRS, DMRS }.

For one embodiment, the second multi-antenna related parameter includes a spatial domain filter (spatial domain filter).

For one embodiment, the second multi-antenna related parameter includes a tci (transmission configuration indicator).

For one embodiment, the second multi-antenna related parameter includes a Spatial correlation (Spatial correlation) parameter.

For one embodiment, the second multi-antenna related parameters include QCL parameters.

For one embodiment, the second multi-antenna related parameter comprises a transmit beam.

For one embodiment, the second multi-antenna related parameter comprises a receive beam.

For one embodiment, the second multi-antenna related parameter includes a spatial transmit filter.

For one embodiment, the second multi-antenna related parameter includes a spatial receive filter.

For one embodiment, the second multi-antenna correlation parameter includes a Spatial correlation (Spatial correlation) relationship with a reference signal.

For one embodiment, the second multi-antenna related parameter includes a QCL relationship with a reference signal.

As an embodiment, the third multi-antenna related parameter comprises a spatial domain filter (spatial domain filter).

For one embodiment, the third multi-antenna related parameter includes a tci (transmission configuration indicator).

For one embodiment, the third multi-antenna related parameter includes a Spatial correlation (Spatial correlation) parameter.

For one embodiment, the third multi-antenna related parameters include QCL parameters.

As an embodiment, the third multi-antenna related parameter comprises a transmit beam.

For one embodiment, the third multi-antenna related parameter comprises a receive beam.

For one embodiment, the third multi-antenna related parameter includes a spatial transmit filter.

For one embodiment, the third multi-antenna related parameter includes a spatial receive filter.

As an embodiment, the third multi-antenna correlation parameter includes a Spatial correlation (Spatial correlation) relationship with a reference signal.

For one embodiment, the third multi-antenna related parameter includes a QCL relationship with a reference signal.

For one embodiment, the QCL parameters include a QCL type.

For one embodiment, the QCL parameters include a QCL association with another signal.

For one embodiment, the QCL parameters include a Spatial correlation (Spatial relationship) relationship with another signal.

As an embodiment, the specific definition of QCL is seen in section 5.1.5 in 3GPP TS 38.214.

As an embodiment, the QCL association of one signal and another signal refers to: all or part of large-scale (properties) characteristics of a wireless signal transmitted on an antenna port corresponding to the other signal can be deduced from all or part of large-scale (properties) characteristics of a wireless signal transmitted on an antenna port corresponding to the one signal.

As an example, the large scale characteristics of a wireless signal include one or more of { delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (Doppler shift), path loss (path loss), average gain (average gain), average delay (average delay), and Spatial Rx parameters }.

As one embodiment, the Spatial Rx parameters (Spatial Rx parameters) include one or more of { receive beams, receive analog beamforming matrix, receive analog beamforming vector, receive Spatial filtering (Spatial filter), Spatial domain reception filtering (Spatial domain reception filter) }.

As an embodiment, the QCL association of one signal and another signal refers to: the one signal and the another signal have at least one same QCL parameter (QCLparameter).

As an embodiment, the QCL parameters include: { delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (Doppler shift), path loss (path loss), average gain (average gain), average delay (average delay), Spatial Rx parameters }.

As an embodiment, the QCL association of one signal and another signal refers to: at least one QCL parameter of the other signal can be inferred from the at least one QCL parameter of the one signal.

As an embodiment, the QCL type (QCLtype) between one signal and another signal being QCL-type means: the Spatial Rx parameters (Spatial Rx parameters) of the wireless signal transmitted on the antenna port corresponding to the other signal can be inferred from the Spatial Rx parameters (Spatial Rx parameters) of the wireless signal transmitted on the antenna port corresponding to the one signal.

As an embodiment, the QCL type (QCLtype) between one signal and another signal being QCL-type means: the one reference signal and the other reference signal can be received with the same Spatial Rx parameters (Spatial Rx parameters).

As an example, the Spatial correlation (Spatial relationship) relationship of one signal and another signal refers to: transmitting the other signal with a spatial filter that receives the one signal.

As an example, the Spatial correlation (Spatial relationship) relationship of one signal and another signal refers to: receiving the other signal with a spatial filter that transmits the one signal.

As an embodiment, the first time-frequency Resource block includes a positive integer number of Resource Elements (REs) in a frequency domain.

As an embodiment, the first time-frequency Resource Block includes a positive integer number of Resource Blocks (RBs) in a frequency domain.

As an embodiment, the first time-frequency Resource Block includes a positive integer number of Resource Block Group (RBG) in a frequency domain.

As an embodiment, the first time-frequency resource block includes a positive integer number of Control Channel Elements (CCEs) in a frequency domain.

As an embodiment, the first time-frequency resource block includes a positive integer number of multicarrier symbols in a time domain.

As an embodiment, the first time-frequency resource block includes a positive integer number of slots in a time domain.

As an embodiment, the first time-frequency resource block includes a positive integer number of subframes in a time domain.

As an embodiment, the first time-frequency resource block includes a plurality of consecutive multicarrier symbols in a time domain.

As an embodiment, the first time-frequency resource block includes a plurality of consecutive resource blocks in a frequency domain.

As an embodiment, the first time-frequency resource block includes a plurality of discontinuous resource blocks in a frequency domain.

As one embodiment, the first subband includes a positive integer number of RBs.

For one embodiment, the first subband includes a positive integer number of RBGs.

For one embodiment, the first sub-band includes a positive integer number of Carrier Components (CCs).

For one embodiment, the first sub-band includes a positive integer number of LBT channel bandwidths.

As an embodiment, the first time-frequency resource block belongs to a first sub-band in a frequency domain.

As an embodiment, the first time-frequency resource block does not belong to the first sub-band in the frequency domain.

As an embodiment, the first Access detection includes a Channel Access Procedure (Channel Access Procedure).

As an embodiment, the first Access detection includes a Channel Access Procedure (Channel Access Procedure) of an unlicensed spectrum.

As an embodiment, the first Access detection includes a type 1 uplink Channel Access Procedure (Channel Access Procedure), and the definition of the type 1 uplink Channel Access Procedure refers to 3GPP TS 37.213.

As an embodiment, the first Access detection includes a type 1 downlink Channel Access Procedure (Channel Access Procedure), and the definition of the type 1 downlink Channel Access Procedure refers to 3GPP TS 37.213.

As an embodiment, the first Access detection includes a type 2 uplink Channel Access Procedure (Channel Access Procedure), and the definition of the type 2 uplink Channel Access Procedure refers to 3GPP TS 37.213.

As an embodiment, the first Access detection includes a type 2 downlink Channel Access Procedure (Channel Access Procedure), and the definition of the type 2 downlink Channel Access Procedure refers to 3GPP TS 37.213.

As an embodiment, the first access detection comprises a fourth class of LBT (Cat 4 LBT).

As an embodiment, the first access detection comprises a second class of LBT (Cat 2 LBT).

For one embodiment, the first access detection comprises a positive integer number of first type monitoring.

As an embodiment, the first type of monitoring comprises a primary energy detection.

As an embodiment, the first type of monitoring comprises a plurality of energy detections.

As an embodiment, the first type of monitoring comprises coherent detection.

For one embodiment, the first type of monitoring includes a CRC check.

As an embodiment, the first type of monitoring comprises interference perception.

As an embodiment, the duration of the first type of monitoring is a sensing slot duration (sensing slot duration), and the sensing slot duration is defined with reference to 3GPP TS 37.213.

As an embodiment, there is no time interval between the first access detection and the first time-frequency resource block.

As an embodiment, there is a first time interval between the first access detection and the first block of time and frequency resources.

As an embodiment, a start time of the first time-frequency resource block is no earlier than a termination time of the first access detection.

As an embodiment, the first access detection includes a positive integer number of energy detections, and when the number of times of energy detections in which a detection result of the positive integer number of energy detections is channel idle is not less than a first number threshold, the first time-frequency resource block is used for transmitting the first signal; when the number of times of the energy detection with the detection result of the positive integer number of times of energy detection being idle of the channel is smaller than a first number threshold, the first time-frequency resource block is not used for sending the first signal; the first number threshold is a positive integer.

For one embodiment, the first type of signal comprises a baseband signal.

For one embodiment, the first type of signal comprises a wireless signal.

As an embodiment, the first type of signal is transmitted on a SideLink (SideLink).

As an embodiment, the first type of signal is transmitted on an UpLink (UpLink).

As an example, the first type of signal is transmitted on the DownLink (DownLink).

As an example, the first type of signal is transmitted on a Backhaul link (Backhaul).

As an embodiment, the first type of signal is transmitted over a Uu interface.

As an example, the first type of signal is transmitted through a PC5 interface.

As an embodiment, the first type of signal carries a Transport Block (TB).

As an embodiment, the first type of signal carries one CB (Code Block).

As an embodiment, the first type of signal carries a CBG (Code Block Group).

As an embodiment, the first type of signal comprises control information.

As an example, the first type of signal includes SCI (Sidelink Control Information).

For one embodiment, the first type of signal includes one or more fields in a SCI.

For one embodiment, the first type of signal includes one or more fields in a SCI format.

As an embodiment, the first type signal includes UCI (Uplink Control Information).

For one embodiment, the first type of signal includes one or more fields in a UCI.

As an embodiment, the first type of signal includes one or more fields in a UCI format.

As an embodiment, the first type signal includes DCI (Downlink Control Information).

For one embodiment, the first type of signal includes one or more fields in one DCI.

For one embodiment, the first type of signal includes one or more fields in a DCI format.

As an embodiment, the first type of signal includes a Physical Uplink Shared Channel (PUSCH).

As an embodiment, the first type of signal includes a Physical Uplink Control Channel (PUCCH).

As an embodiment, the first type of signal includes a Physical Downlink Shared Channel (PDSCH).

As an embodiment, the first type of signal includes a Physical Downlink Control Channel (PDCCH).

As an embodiment, the first type of signal includes a Physical Sidelink Control Channel (PSCCH).

As an embodiment, the first type of signal includes a Physical Sidelink Shared Channel (psch).

As an embodiment, the first type of signal includes a Physical Sidelink Feedback Channel (PSFCH).

As an embodiment, the first type of signal is transmitted in a licensed spectrum.

As an embodiment, the first type of signal is transmitted in an unlicensed spectrum.

As an embodiment, the first type of signal includes an uplink reference signal.

As an embodiment, the first type of signal includes a downlink reference signal.

For one embodiment, the first type of signal includes a sidelink reference signal.

As an embodiment, the first type of Signal comprises a Demodulation Reference Signal (DMRS).

As an embodiment, the first type of Signal includes a Sounding Reference Signal (SRS).

As an embodiment, the first type of signal includes an uplink signal Configured with a Grant (Configured Grant).

For one embodiment, the first type of signal includes a dynamically scheduled uplink signal.

For one embodiment, the first type of signal includes a semi-statically scheduled uplink signal.

As an embodiment, the first type of signal includes a Configured granted PUSCH (CG-PUSCH).

As one embodiment, the first type of signal includes a dynamically scheduled PUSCH.

As one embodiment, the first type of signal includes a semi-statically scheduled PUSCH.

Example 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 5G NR, LTE (Long-Term Evolution), and LTE-a (Long-Term Evolution-enhanced) 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, NG-RANs (next generation radio access networks) 202, 5 GCs (5G Core networks )/EPCs (Evolved Packet cores) 210, HSS (Home Subscriber Server)/UDMs (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 b (gNB)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/EPC 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a drone, an aircraft, a narrowband internet of things device, a machine type communication device, a terrestrial vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable 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/EPC 210. 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/UPF 213. The P-GW provides UE IP address allocation 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 first node in this application includes the gNB 203.

As an embodiment, the second node in this application includes the gNB 203.

As an embodiment, the second node in this application includes the UE 241.

As an embodiment, the first node in this application includes the UE 241.

As an embodiment, the second node in the present application includes the UE 201.

As an embodiment, the second node in this application includes the gNB 204.

As an embodiment, the UE201 is included in the user equipment of the present application.

As an embodiment, the UE241 is included in the user equipment in this application.

As an embodiment, the base station apparatus in this application includes the gNB 203.

As an embodiment, the base station device in this application includes the gNB 204.

As an embodiment, the UE201 supports sidelink transmission.

As an embodiment, the UE201 supports a PC5 interface.

As an embodiment, the UE201 supports the Uu interface.

For one embodiment, the UE241 supports sidelink transmission.

As an embodiment, the UE241 supports a PC5 interface.

As an embodiment, the gNB203 supports the Uu interface.

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 radio protocol architecture for the user plane 350 and the control plane 300, fig. 3 showing the radio protocol architecture for the first node (RSU in UE or V2X, car equipment or car communication module) and the second node (gNB, RSU in UE or V2X, car equipment or car communication module) 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 PHY 301. Layer 2(L2 layer) 305 is above the PHY301, and is responsible for the links between the first and second nodes and the two UEs through the PHY 301. 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 node. The PDCP sublayer 304 provides data ciphering and integrity protection, and the PDCP sublayer 304 also provides handover support for a second node by a first node. The RLC sublayer 303 provides segmentation and reassembly of packets, retransmission of missing packets by ARQ, and the RLC sublayer 303 also provides duplicate packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell between the first nodes. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in layer 3 (layer L3) 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 node and the first node. The radio protocol architecture of the user plane 350 includes layer 1(L1 layer) and layer 2(L2 layer), the radio protocol architecture in the user plane 350 for the first and second nodes 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 an SDAP (Service Data Adaptation Protocol) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS streams and Data Radio Bearers (DRBs) to support diversity of services. Although not shown, the first node 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.

As an embodiment, the first signal in this application is generated in the PHY 351.

As an example, the first signal in this application is generated in the MAC 352.

As an example, the first signal in this application is generated in the PHY 301.

As an example, the first signal in this application is generated in the MAC 302.

As an embodiment, the first signal in this application is generated in the RRC 306.

As an embodiment, the first type of signal in this application is generated in the PHY 351.

As an example, the first type of signal in this application is generated in the MAC 352.

As an embodiment, the first type of signal in this application is generated in the PHY 301.

As an example, the first type of signal in this application is generated in the MAC 302.

As an embodiment, the first type of signal in this application is generated in the RRC 306.

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 410 and a second communication device 450 communicating with each other in an access network.

The first communications 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.

The second 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.

In the transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper layer data packets from the core network are provided to the controller/processor 475. The controller/processor 475 implements the functionality of layer L2. In transmissions from the first 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 second communications device 450 based on various priority metrics. The controller/processor 475 is also responsible for retransmission of lost packets and signaling to the second 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 450 and 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 carrying 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 first communications device 410 to the second communications device 450, at the second communications device 450, each receiver 454 receives a signal through its respective antenna 452. 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. Receive processor 456 and multi-antenna receive processor 458 implement the 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 second 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 first communications 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 functionality 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 first 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 second communications device 450 to the first communications device 410, a data source 467 is used at the second communications device 450 to provide upper layer data packets to a controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the transmit function at the first communications apparatus 410 described in the transmission from the first communications apparatus 410 to the second communications apparatus 450, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to said first communications device 410. A transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding by a multi-antenna transmit processor 457 including codebook-based precoding and non-codebook based precoding, and beamforming, and the transmit processor 468 then modulates the resulting spatial streams into multi-carrier/single-carrier symbol streams, which are provided to different antennas 452 via a 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 and provides the radio frequency symbol stream to the antenna 452.

In a transmission from the second communication device 450 to the first communication device 410, the functionality at the first communication device 410 is similar to the receiving functionality at the second communication device 450 described in the transmission from the first communication device 410 to the second 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 functionality of the L1 layer. Controller/processor 475 implements the L2 layer functions. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In transmissions from the second communications device 450 to the first 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 node in this application includes the second communication device 450, and the second node in this application includes the first communication device 410.

As an embodiment, the first node in this application includes the first communication device 410, and the second node in this application includes the second communication device 450.

As an embodiment, the first node in this application includes the second communication device 450, and the second node in this application includes the second communication device 450.

As a sub-embodiment of the above-described embodiment, the second communication device 450 includes: at least one controller/processor; the at least one controller/processor is responsible for HARQ operations.

As a sub-embodiment of the above-described embodiment, the first communication device 410 includes: at least one controller/processor; the at least one controller/processor is responsible for HARQ operations.

As a sub-embodiment of the above-described embodiment, the first communication device 410 includes: at least one controller/processor; the at least one controller/processor is responsible for error detection using positive Acknowledgement (ACK) and/or Negative Acknowledgement (NACK) protocols to support HARQ operations.

As an embodiment, the second communication device 450 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 450 apparatus at least: performing a first access detection at a first sub-band using the target multi-antenna related parameters; transmitting a first signal in a first time-frequency resource block using a first multi-antenna related parameter; wherein the first access detection is used to determine that the first sub-band may be used to transmit the first signal; the first time-frequency resource block belongs to a first time window in a time domain; a first time sub-window belongs to the first time window, and the starting time of the first time sub-window is not earlier than the ending time of the first time-frequency resource block; the target multi-antenna related parameter is used to determine whether the first time sub-window is shared with a target recipient of the first signal for transmitting a first type of signal; when the target multi-antenna related parameter is a second multi-antenna related parameter, the first time sub-window is shared to the target receiver of the first signal for transmitting the first type of signal; when the target multi-antenna related parameter is a third multi-antenna related parameter, the first time sub-window is not shared to the target receiver of the first signal for transmitting the first type of signal.

As an embodiment, the second 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: performing a first access detection at a first sub-band using the target multi-antenna related parameters; transmitting a first signal in a first time-frequency resource block using a first multi-antenna related parameter; wherein the first access detection is used to determine that the first sub-band may be used to transmit the first signal; the first time-frequency resource block belongs to a first time window in a time domain; a first time sub-window belongs to the first time window, and the starting time of the first time sub-window is not earlier than the ending time of the first time-frequency resource block; the target multi-antenna related parameter is used to determine whether the first time sub-window is shared with a target recipient of the first signal for transmitting a first type of signal; when the target multi-antenna related parameter is a second multi-antenna related parameter, the first time sub-window is shared to the target receiver of the first signal for transmitting the first type of signal; when the target multi-antenna related parameter is a third multi-antenna related parameter, the first time sub-window is not shared to the target receiver of the first signal for transmitting the first type of signal.

As an embodiment, the first communication device 410 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 first communication device 410 means at least: receiving a first signal in a first time-frequency resource block; transmitting a first type of signal in a first time sub-window; or, abstaining from transmitting the first type of signal in the first time sub-window; wherein a first multi-antenna related parameter is used for transmitting the first signal; target multi-antenna related parameters are used to perform a first access detection at a first sub-band, the first access detection being used to determine that the first sub-band may be used to transmit the first signal; the first time-frequency resource block belongs to a first time window in a time domain; a first time sub-window belongs to the first time window, and the starting time of the first time sub-window is not earlier than the ending time of the first time-frequency resource block; the target multi-antenna related parameter is used to determine whether the first time sub-window is shared with a target recipient of the first signal for transmitting a first type of signal; when the target multi-antenna related parameter is a second multi-antenna related parameter, the first time sub-window is shared to the target receiver of the first signal for transmitting the first type of signal; when the target multi-antenna related parameter is a third multi-antenna related parameter, the first time sub-window is not shared to the target receiver of the first signal for transmitting the first type of signal.

As an embodiment, the first communication device 410 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 signal in a first time-frequency resource block; transmitting a first type of signal in a first time sub-window; or, abstaining from transmitting the first type of signal in the first time sub-window; wherein a first multi-antenna related parameter is used for transmitting the first signal; target multi-antenna related parameters are used to perform a first access detection at a first sub-band, the first access detection being used to determine that the first sub-band may be used to transmit the first signal; the first time-frequency resource block belongs to a first time window in a time domain; a first time sub-window belongs to the first time window, and the starting time of the first time sub-window is not earlier than the ending time of the first time-frequency resource block; the target multi-antenna related parameter is used to determine whether the first time sub-window is shared with a target recipient of the first signal for transmitting a first type of signal; when the target multi-antenna related parameter is a second multi-antenna related parameter, the first time sub-window is shared to the target receiver of the first signal for transmitting the first type of signal; when the target multi-antenna related parameter is a third multi-antenna related parameter, the first time sub-window is not shared to the target receiver of the first signal for transmitting the first type of signal.

As one example, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, the data source 467 may be utilized to receive the first signaling in this application.

As one example, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, the data source 467 may be utilized to receive the second signaling.

As one example, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, the data source 467 may be utilized to receive the first signal as described herein.

As an example, at least one of { the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller/processor 475, the memory 476} is used for transmitting the first signaling in the present application.

As an example, at least one of { the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller/processor 475, the memory 476} is used for transmitting the second signaling in the present application.

As one example, at least one of { the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller/processor 475, the memory 476} is used for transmitting the first signal in the present application.

Example 5

Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in fig. 5. In FIG. 5, communication between the first node U1 and the second node U2 is over an air interface. In fig. 5, the order of the steps in the blocks does not represent a specific chronological relationship between the individual steps.

For theFirst node U1Receiving the first information block in step S11, receiving the third information block in step S12, performing a first access check in step S13, transmitting a first signal in step S14, and receiving a first type signal in step S15;

for theSecond node U2Transmitting the first information block in step S21, transmitting the third information block in step S22, receiving the first signal in step S23, and transmitting the first type signal in step S24;

among them, step S11 and step S21 in the broken line frame F51 are optional, step S12 and step S22 in the broken line frame F52 are optional, and step S15 and step S24 in the broken line frame F53 are optional.

In embodiment 5, the first node U1 performs a first access detection in a first sub-band using a target multiple antenna related parameter and transmits a first signal in a first time-frequency resource block using a first multiple antenna related parameter. The first access detection is used to determine that the first sub-band may be used to transmit the first signal; the first time-frequency resource block belongs to a first time window in a time domain; a first time sub-window belongs to the first time window, and the starting time of the first time sub-window is not earlier than the ending time of the first time-frequency resource block; the target multi-antenna related parameter is used to determine whether the first time sub-window is shared with a target recipient of the first signal for transmitting a first type of signal; when the target multi-antenna related parameter is a second multi-antenna related parameter, the first time sub-window is shared to the target receiver of the first signal for transmitting the first type of signal; when the target multi-antenna related parameter is a third multi-antenna related parameter, the first time sub-window is not shared to the target receiver of the first signal for transmitting the first type of signal. The first information block is used for determining the target multi-antenna related parameter from a set of candidate multi-antenna related parameters, the set of candidate multi-antenna related parameters comprising the second multi-antenna related parameter and the third multi-antenna related parameter. The third information block is used to determine the first multi-antenna related parameter and the first block of time-frequency resources.

For one embodiment, the air interface between the second node U2 and the first node U1 includes a PC5 interface.

For one embodiment, the air interface between the second node U2 and the first node U1 includes a sidelink.

For one embodiment, the air interface between the second node U2 and the first node U1 comprises a Uu interface.

For one embodiment, the air interface between the second node U2 and the first node U1 includes a cellular link.

For one embodiment, the air interface between the second node U2 and the first node U1 comprises a wireless interface between user equipment and user equipment.

For one embodiment, the air interface between the second node U2 and the first node U1 comprises a wireless interface between a base station device and a user equipment.

Example 6

Embodiment 6 illustrates a schematic diagram of time resources occupied by the first access detection, the first time window, the first time-frequency resource block and the first time sub-window according to an embodiment of the present application, as shown in fig. 6. In fig. 6, the starting time of the first time window is located after the ending time of the first access detection, the first time-frequency resource block belongs to the first time window in the time domain, the first time sub-window belongs to the first time window in the time domain, and the starting time of the first time sub-window is located after the ending time of the first time-frequency resource block.

As an embodiment, the first time window comprises a time length of a positive integer number of multicarrier symbols.

As an embodiment, the first time window comprises a COT.

As an embodiment, the priority of the first access detection is used to determine the length of time of the first time window.

As an embodiment, the priority of the first signal is used to determine the priority of the first access detection.

As an embodiment, the priority of the first type of signal is used to determine the priority of the first access detection.

As one embodiment, the first signal indicates a length of time of the first time window.

As an embodiment, the first signal indicates a remaining length of time of the first time window, the remaining length of time of the first time window comprising a length of time from an end time of the first signal to an end time of the first time window.

As an embodiment, the first signal indicates a remaining length of time of the first time window, the remaining length of time of the first time window comprising a length of time from an end time of a time slot in which the first signal is located to an end time of the first time window.

As an embodiment, the first temporal sub-window comprises a time length of a positive integer number of multicarrier symbols.

As an embodiment, said first time sub-window comprises said remaining length of time of said first time window.

As an embodiment, when the first node is a base station device, the first time sub-window includes an uplink transmission slot in the remaining time length of the first time window.

As an embodiment, when the first node is a user equipment, the first time sub-window includes a downlink transmission time slot in the remaining time length of the first time window.

As an embodiment, the time domain resources occupied by the first signal are used to determine the first time sub-window.

As an embodiment, the time domain resource occupied by the first time-frequency resource block is used to determine the first time sub-window.

As an embodiment, the first signal carries a second information block, and a timeslot to which the second information block belongs in a time domain is used for determining the first time sub-window.

As an embodiment, the first time sub-window includes time domain resources other than time domain resources occupied by the first signal in the COT determined by the first access detection.

As an embodiment, the first time sub-window includes a part of time domain resources outside the time domain resources occupied by the first signal in the COT determined by the first access detection.

As an embodiment, the first receiver receives a third information block; wherein the third information block is used to determine the first multi-antenna related parameter and the first time-frequency resource block.

As an embodiment, the third information block is used to indicate the first multi-antenna related parameter and the first time-frequency resource block.

As one embodiment, the third information block includes one or more fields in DCI.

As an embodiment, the third information block includes one or more fields in RRC signaling.

For one embodiment, the third information block includes dynamic scheduling information.

For one embodiment, the third information block includes semi-static scheduling information.

As an embodiment, the third information block includes configuration information of CG-PUSCH.

Example 7

Embodiment 7 illustrates a schematic diagram of time resources occupied by a first time window, a first time-frequency resource block, a second access detection, a first type of signal, and a first time sub-window according to an embodiment in the present application, as shown in fig. 7. In fig. 7, the first time-frequency resource block, the second access detection, the first type of signal and the first time sub-window both belong to the first time window in the time domain. The second access detection is performed before the first type of signal is transmitted. In fig. 7, 2 dashed boxes filled with grey are used to indicate a second access detection and the first type of signal, and dashed lines are used to indicate that the second access detection and the sending of the first type of signal are optional. In embodiment 7, the second access detection and the first type of signal are performed when the first temporal sub-window is shared to the target recipient of the first signal, and not otherwise.

As an embodiment, when the first time sub-window is shared with a target recipient of the first signal for transmitting the first type of signal, the target recipient of the first signal performs a second access detection to determine whether the first type of signal is transmitted.

For one embodiment, the first type of signal comprises a unicast signal.

For one embodiment, the first type of signal comprises a unicast signal sent to the first node.

For one embodiment, the first type of signal comprises a multicast signal including data to be transmitted to the first node.

For one embodiment, the first type of signal includes user plane data transmitted to the first node.

As an embodiment, the first type of signal comprises control information sent to the first node.

As an embodiment, the first type of signal includes a signal sent to a third node, the third node being different from the first node.

As an embodiment, a time length of the time domain resource occupied by the first type of signal is greater than a first time threshold.

As an embodiment, the first time threshold comprises a time length of N1 multicarrier symbols, the N1 being a positive integer.

As an example, the N1 includes one of {1,2,4,7,8,14,16,28,32 }.

As an embodiment, LBT is not performed before the first type of signal is transmitted.

As an embodiment, the cat 2 LBT is performed before the first type of signal is transmitted.

As an embodiment, the cat4 LBT is not performed before the first type of signal is transmitted.

As an embodiment, the first time sub-window is used for transmitting a second type of signal, whether the second type of signal is transmitted is independent of the target multiple antenna related parameter.

As an embodiment, the second type of signal comprises control information sent to the first node.

For one embodiment, the second type of signal comprises a unicast signal sent to the first node.

As an embodiment, the time length of the time domain resource occupied by the second type of signal is not greater than the first time threshold.

As an embodiment, the second Access detection includes a Channel Access Procedure (Channel Access Procedure).

As an embodiment, the second Access detection includes a Channel Access Procedure (Channel Access Procedure) of an unlicensed spectrum.

As an embodiment, the second Access detection includes a type 1 uplink Channel Access Procedure (Channel Access Procedure), and the definition of the type 1 uplink Channel Access Procedure refers to 3GPP TS 37.213.

As an embodiment, the second Access detection includes a type 1 downlink Channel Access Procedure (Channel Access Procedure), and the definition of the type 1 downlink Channel Access Procedure refers to 3GPP TS 37.213.

As an embodiment, the second Access detection includes a type 2 uplink Channel Access Procedure (Channel Access Procedure), and the definition of the type 2 uplink Channel Access Procedure refers to 3GPP TS 37.213.

As an embodiment, the second Access detection includes a type 2 downlink Channel Access Procedure (Channel Access Procedure), and the definition of the type 2 downlink Channel Access Procedure refers to 3GPP TS 37.213.

As an embodiment, the second Access detection includes a type 2A uplink Channel Access Procedure (Channel Access Procedure), and the definition of the type 2A uplink Channel Access Procedure refers to 3GPP TS 37.213.

As an embodiment, the second Access detection includes a type 2A downlink Channel Access Procedure (Channel Access Procedure), and the definition of the type 2A downlink Channel Access Procedure refers to 3GPP TS 37.213.

As an embodiment, the second Access detection includes a type 2B uplink Channel Access Procedure (Channel Access Procedure), and the definition of the type 2B uplink Channel Access Procedure refers to 3GPP TS 37.213.

As an embodiment, the second Access detection includes a type 2B downlink Channel Access Procedure (Channel Access Procedure), and the definition of the type 2B downlink Channel Access Procedure refers to 3GPP TS 37.213.

As an embodiment, the second Access detection includes a type 2C uplink Channel Access Procedure (Channel Access Procedure), and the definition of the type 2C uplink Channel Access Procedure refers to 3GPP TS 37.213.

As an embodiment, the second Access detection includes a type 2C downlink Channel Access Procedure (Channel Access Procedure), and the definition of the type 2C downlink Channel Access Procedure refers to 3GPP TS 37.213.

As an embodiment, the second access detection comprises a fourth class of LBT (Cat 4 LBT).

For one embodiment, the second access detection comprises a second class of LBT (Cat 2 LBT).

For one embodiment, the second access detection includes a positive integer number of the first type of monitoring.

As an embodiment there is no time interval between the second access detection and the first type of signal.

As an embodiment, there is a first time interval between the second access detection and the first type of signal.

As one embodiment, the second access detection includes no energy detection.

As one embodiment, the second access detection includes performing an energy detection.

For one embodiment, the second access detection comprises performing a plurality of energy detections.

As an embodiment, the second access detection does not comprise cat4 LBT.

As an embodiment, the second access detection does not include a type 1 uplink channel access procedure.

As an embodiment, the second access detection does not include a type 1 downlink channel access procedure.

Example 8

Embodiment 8 illustrates beamwidths of a first receive beam and a second receive beam of the first node and a first transmit beam of the second node according to an embodiment of the present application, as shown in fig. 8. In fig. 8, white filled ellipses represent a schematic diagram of the beam directions of the receive beams of the first node; the grey filled ellipses represent a schematic view of the beam direction of the transmit beam of the second node. In fig. 8, the first receive beam of the first node is a wide beam and the second receive beam of the first node is a narrow beam; the spatial direction of the first receive beam of the first node comprises the spatial direction of the second receive beam of the first node and the spatial direction of the first transmit beam of the second node. In embodiment 8, the second multi-antenna related parameter in the present application includes a first reception beam of the first node; a third multi-antenna related parameter in the present application comprises a second receive beam of the first node; a fourth multi-antenna related parameter in this application comprises a first transmission beam of the second node.

As an embodiment, the first information block in the present application is used for determining the target multi-antenna related parameter from a candidate multi-antenna related parameter set, the candidate multi-antenna related parameter set comprising the second multi-antenna related parameter and the third multi-antenna related parameter.

As an embodiment, the first information block comprises higher layer signaling.

As one embodiment, the first information block includes one or more fields in RRC layer signaling.

As one embodiment, the first information block includes one or more fields in MAC layer signaling.

As one embodiment, the first information block includes one or more fields in physical layer signaling.

As an embodiment, the first information block indicates a second multi-antenna related parameter.

As an embodiment, when the first information block indicates a second multi-antenna related parameter, the target multi-antenna related parameter is the second multi-antenna related parameter; the target multi-antenna related parameter is the third multi-antenna related parameter when the first information block does not indicate a second multi-antenna related parameter.

As an embodiment, when the first node receives the first information block, the second multi-antenna related parameter is determined to be the target multi-antenna related parameter; when the first node does not receive the first information block, the third multi-antenna related parameter is determined to be the target multi-antenna related parameter.

As one embodiment, the first information block includes configuration information of CG-PUSCH.

As one embodiment, the first information block includes scheduling information of a PUSCH.

As an embodiment, the first node autonomously determines the target multi-antenna related parameter from the second multi-antenna related parameter and the third multi-antenna related parameter.

As an embodiment, the sentence "the first node autonomously determines the target multi-antenna related parameter from the second multi-antenna related parameter and the third multi-antenna related parameter" includes that the first node determines the target multi-antenna related parameter from the second multi-antenna related parameter and the third multi-antenna related parameter without an indication of the target recipient of the first signal.

As an embodiment, the sentence "the first node autonomously determines the target multi-antenna related parameter from the second multi-antenna related parameter and the third multi-antenna related parameter" includes that the first node determines that the target multi-antenna related parameter from the second multi-antenna related parameter and the third multi-antenna related parameter is an implementation behavior of the first node.

As an embodiment, the first channel measurement result is used for determining the target multi-antenna related parameter from the set of candidate multi-antenna related parameters.

As one embodiment, the first channel measurement comprises an interference strength measurement of the first sub-band.

As an embodiment, the first channel measurement comprises an interference direction measurement of the first sub-band.

As one embodiment, the first channel measurement result includes a channel occupancy of the first sub-band.

As one embodiment, the first channel measurement result includes a channel idle rate of the first sub-band.

As an embodiment, when the first channel measurement result is determined to be unfavorable for performing the first access detection using a second multi-antenna related parameter, the third multi-antenna related parameter is determined to be the target multi-antenna related parameter.

As an embodiment, when the first channel measurement result is determined to be favorable for performing the first access detection using a second multi-antenna related parameter, the second multi-antenna related parameter is determined to be the target multi-antenna related parameter.

As an embodiment, the first node performs a first access detection using the second multi-antenna related parameter, and when the first access detection fails, the first node performs the first access detection again using the third multi-antenna related parameter.

As an embodiment, the second multi-antenna related parameter is one multi-antenna related parameter in a first multi-antenna related parameter set, and the third multi-antenna related parameter is one multi-antenna related parameter in a second multi-antenna related parameter set.

As an embodiment, the first set of multi-antenna related parameters is autonomously determined by the first node; the second set of multiple antenna related parameters is configured by the target recipient of the first signal.

As an embodiment, any one of the first multiple antenna related parameter sets is used for performing LBT.

As an embodiment, any one of the first set of multi-antenna related parameters is associated with a quasi-omni beam.

As an embodiment, when the target multi-antenna related parameter is a third multi-antenna related parameter, the first time sub-window is not shared to the target recipient of the first signal for transmitting a wireless signal.

As an embodiment, when the target multiple-antenna-related parameter is a third multiple-antenna-related parameter, the first time sub-window is shared with the target recipient of the first signal for transmitting a second type of signal, the second type of signal being different from the first type of signal.

As an embodiment, a fourth multi-antenna related parameter is used for transmitting the first type of signal, and the fourth multi-antenna related parameter and the third multi-antenna related parameter have an association relationship.

As an embodiment, a fourth multi-antenna related parameter is used for transmitting the first type of signal, and the fourth multi-antenna related parameter and the third multi-antenna related parameter have no association relationship.

As an embodiment, the spatial direction of the fourth multi-antenna related parameter is not comprised in the spatial direction of the third multi-antenna related parameter.

For one embodiment, the second multi-antenna related parameter comprises an omni-directional spatial receive filter.

For one embodiment, the second multi-antenna related parameter comprises a quasi-omni spatial receive filter.

As an embodiment, the beam width of the beam associated with the second multi-antenna related parameter is not smaller than the first beam width threshold.

As an embodiment, the coverage of the beam associated with the second multi-antenna related parameter includes the coverage of the beam associated with the fourth multi-antenna related parameter.

For one embodiment, the third multi-antenna related parameter includes a directional spatial receive filter.

As an embodiment, the beam width of the beam associated with the third multi-antenna related parameter is larger than a first beam width threshold.

As an embodiment, the first information block indicates a first set of multi-antenna related parameters to which the second multi-antenna related parameters belong.

As an embodiment, the first information block indicates a second set of multi-antenna related parameters to which the third multi-antenna related parameter belongs.

As an embodiment, the first multiple antenna correlation parameter set includes a positive integer number of multiple antenna correlation parameters, and the positive integer number of multiple antenna correlation parameters included in the first multiple antenna correlation parameter set are respectively associated to a positive integer number of antenna groups.

As a sub-embodiment of the above embodiment, any one of the positive integer number of antenna groups is associated to one antenna panel (panel).

As a sub-embodiment of the above embodiment, any one antenna group of the positive integer number of antenna groups is associated to one transceiving node (TRP).

As an embodiment, the first information block implicitly indicates a target multi-antenna related parameter from the set of candidate multi-antenna related parameters.

As an embodiment, when the first information block includes channel occupancy information, the target multi-antenna related parameter is the second multi-antenna related parameter; when the first information block does not include channel occupancy information, the target multi-antenna related parameter is the third multi-antenna related parameter.

For one embodiment, the channel occupancy information includes an energy detection threshold.

As an embodiment, the channel occupancy information includes channel occupancy time configuration information.

As an embodiment, the channel occupancy information includes priority configuration information of the first access detection.

As an embodiment, the first multi-antenna related parameter is used for determining the third multi-antenna related parameter.

As an embodiment, the third multi-antenna related parameter and the first multi-antenna related parameter have an association relationship.

As an embodiment, the third multi-antenna related parameter is the same as the first multi-antenna related parameter.

As an embodiment, the spatial direction associated with the third multi-antenna related parameter includes the spatial direction associated with the first multi-antenna related parameter.

As an embodiment, the beam width of the beam associated with the third multi-antenna related parameter is not smaller than the beam width of the beam associated with the first multi-antenna related parameter.

As an embodiment, in the present application, the association of one multi-antenna related parameter with another multi-antenna related parameter includes that the one multi-antenna related parameter and the another multi-antenna related parameter are QCL.

As an embodiment, in the present application, the association relationship between one multi-antenna related parameter and another multi-antenna related parameter includes that the one multi-antenna related parameter and the another multi-antenna related parameter have a Spatial association (Spatial relationship).

As an embodiment, in the present application, the correlation between one multi-antenna related parameter and another multi-antenna related parameter includes that the spatial direction of the one multi-antenna related parameter includes the spatial direction of the another multi-antenna related parameter.

As an embodiment, in the present application, the correlation between one multi-antenna related parameter and another multi-antenna related parameter includes that the spatial direction of the another multi-antenna related parameter includes the spatial direction of the one multi-antenna related parameter.

Example 9

Embodiment 9 illustrates a schematic diagram of time resources occupied by the first access detection, the first time/frequency resource block, the first time window, the second information block and the first time sub-window according to an embodiment of the present application, as shown in fig. 9. In fig. 9, the first time-frequency resource block and the first time sub-window both belong to the first time window in the time domain. In embodiment 9, the first block of time and frequency resources is used to transmit the first signal, the first signal comprising the second block of information, the second block of information being used to indicate whether the first time sub-window is shared with a target recipient of the first signal for transmitting the first type of signal.

As an embodiment, the second Information block includes UCI (Uplink Control Information).

As one embodiment, the second information block includes UCI transmitted on PUSCH.

As an embodiment, the second Information block includes CG-UCI (Configured Grant-Uplink Control Information).

As an embodiment, the second information block is used to indicate that the second multi-antenna related parameter is used for the first access detection.

As an embodiment, the second information block is used to indicate that the third multi-antenna related parameter is used for the first access detection.

As an embodiment, the second information block is used to indicate COT sharing information.

As an embodiment, the first time sub-window is shared to the target recipient of the first signal for transmitting the first wireless signal when the second information block indicates that the second multi-antenna related parameters are used for the first access detection.

As an embodiment, the first time sub-window is not shared with the target recipient of the first signal for transmitting the first wireless signal when the second information block indicates that the third multi-antenna related parameter is used for the first access detection.

Example 10

Embodiment 10 illustrates a schematic diagram of a first type of channel sensing according to an embodiment of the present application, as shown in fig. 10.

As an embodiment, the first access detection in this application includes the first type of channel sensing.

As an embodiment, the second access detection in this application includes the first type of channel sensing.

As an example, the first type of monitoring in this application comprises the energy detection.

In embodiment 10, the first type of channel sensing includes performing multiple energy detections in multiple time sub-pools on the first sub-band, respectively, to obtain multiple detection values; a wireless signal is transmitted in the first sub-band if and only if Q1 of the plurality of detection values are all below a first perception threshold, Q1 being a positive integer. The process of multiple energy detections may be described by the flow chart in fig. 10.

In fig. 10, the first node or the second node is in an idle state in step S1001, and determines whether transmission is required in step S1002; performing energy detection within one delay period (defer duration) in step 1003; in step S1004, determining whether all sensing slot periods (sensing slot periods) in the delay period are idle, if yes, proceeding to step S1005 to set a first counter equal to Q1; otherwise, returning to the step S1004; in step S1006, determining whether the first counter is 0, if yes, proceeding to step S1007 to transmit a wireless signal on the first subband in the present application; otherwise, go to step S1008 to perform energy detection in an additional sensing slot duration (additional sensing slot duration); in step S1009, it is determined whether the additional sensing time slot period is idle, and if so, the process proceeds to step S1010 to decrement the first counter by 1, and then returns to step 1006; otherwise, the process proceeds to step S1011 to perform energy detection within an additional delay period (additional duration); in step S1012, determining whether all sensing time slot periods within the additional delay period are idle, if yes, proceeding to step S1010; otherwise, the process returns to step S1011.

As an embodiment, any one of the perceptual slot periods within the given time period comprises one of the plurality of time sub-pools; the given time period is any one of { all delay periods, all additional sensing slot periods, all additional delay periods } included in fig. 10.

As an embodiment, performing energy detection within a given time period refers to: performing energy detection in all sensing slot periods within the given time period; the given time period is any one of { all delay periods, all additional sensing slot periods, all additional delay periods } included in fig. 10.

As an embodiment, the determination as idle by energy detection at a given time period means: all perception time slot periods included in the given period are judged to be idle through energy detection; the given time period is any one of { all delay periods, all additional sensing slot periods, all additional delay periods } included in fig. 10.

As an embodiment, the determination that a given sensing slot period is idle through energy detection means: the first node senses (Sense) the power of all wireless signals in a given time unit on the first sub-band and averages over time, the received power obtained being lower than the first sensing threshold; the given time unit is a duration of time in the given perceptual slot period.

As a sub-embodiment of the above embodiment, the duration of the given time unit is not shorter than 4 microseconds.

As an embodiment, the determination that a given sensing slot period is idle through energy detection means: the first node senses (Sense) the energy of all wireless signals in a given time unit on the first sub-band and averages over time, the received energy obtained being below the first sensing threshold; the given time unit is a duration of time in the given perceptual slot period.

As an embodiment, the determination that a given sensing slot period is idle through energy detection means: the first node carries out energy detection on a time sub-pool included in the given sensing time slot period, and an obtained detection value is lower than the first sensing threshold value; the temporal sub-pool belongs to the plurality of temporal sub-pools, and the detection values belong to the plurality of detection values.

As an embodiment, performing energy detection within a given time period refers to: performing energy detection within all of the sub-pools of time within the given time period; the given time period is any one of { all delay periods, all additional sensing slot periods, all additional delay periods } included in fig. 10, the all time sub-pools belonging to the plurality of time sub-pools.

As an embodiment, the determination as idle by energy detection at a given time period means: detecting values obtained by energy detection of all time sub-pools included in the given time period are lower than the first perception threshold; the given time period is any one of { all delay periods, all additional sensing slot periods, all additional delay periods } included in fig. 10, the all time sub-pools belong to the plurality of time sub-pools, and the detection values belong to the plurality of detection values.

As an example, the duration of one delay period (defer duration) is 16 microseconds plus M2 9 microseconds, where M2 is a positive integer.

As a sub-embodiment of the above embodiment, one delay period includes M1+1 time sub-pools of the plurality of time sub-pools, M1 being a positive integer.

As a sub-embodiment of the above embodiment, the priority corresponding to the first signal in this application is used to determine the M1.

As a reference example of the above sub-embodiment, the Priority is a Channel Access Priority (Channel Access Priority Class), and the definition of the Channel Access Priority is referred to in 3GPP TS 37.213.

As a sub-embodiment of the above embodiment, the M2 belongs to {1,2, 3, 7 }.

As one embodiment, the multiple energy detections are used to determine whether the first sub-band is free (Idle).

As one embodiment, the plurality of energy detections are used to determine whether the first sub-band is usable by the first node for transmitting wireless signals.

As one embodiment, the plurality of energy detections are used to determine whether the first sub-band is usable by the first node to transmit wireless signals spatially correlated with the plurality of energy detections.

As an embodiment, the multiple energy detections are energy detections in LBT (Listen Before Talk, Listen Before send), and specific definitions and implementations of the LBT are described in 3GPP TS 37.213.

As an embodiment, the multiple energy detection is energy detection in CCA (clear channel assessment), and the specific definition and implementation of the CCA are described in 3gpp tr 36.889.

As an embodiment, any one of the multiple energy detections is implemented in a manner defined by 3GPP TS 37.213.

As an embodiment, any one of the multiple energy detections is implemented by an energy detection manner in WiFi.

As an embodiment, any one of the plurality of energy detections is implemented by measuring RSSI (Received Signal Strength Indication).

As an embodiment, any one of the multiple energy detections is implemented by an energy detection manner in LTE LAA.

As an example, the plurality of detection values are all in dBm (millidecibels).

As one example, the plurality of test values are all in units of milliwatts (mW).

As one embodiment, the unit of the plurality of detection values is joule.

As an example, the first perception threshold has a unit of dBm (decibels).

As one embodiment, the first perception threshold is in units of milliwatts (mW).

As one embodiment, the unit of the first perception threshold is joules.

As one embodiment, the first perception threshold is equal to or less than-72 dBm.

As one embodiment, the first perception threshold is equal to or less than-45 dBm.

As an embodiment, the first perception threshold is any value equal to or less than a first given value.

As a sub-embodiment of the above embodiment, the first given value is predefined.

As a sub-embodiment of the above embodiment, the first given value is configured by higher layer signaling, and the first node is a user equipment.

As an embodiment, the first type included in the first candidate type set in the present application includes the first candidate channel sensing operation.

As an embodiment, the first access detection in this application includes channel sensing of the second type.

As an embodiment, the second access detection in this application includes a second type of channel sensing.

As an example, the channel sensing in this application includes the second type of channel sensing.

As an embodiment, the second class of channel sensing operations includes performing Q4 energy detections in a second time window on the first sub-band, respectively, resulting in Q4 detected values, Q4 being a positive integer; the first sub-band is used to transmit wireless signals if and only if all of the Q5 of the Q4 detection values are below a first perception threshold, Q5 being a positive integer no greater than Q4.

As a sub-embodiment of the above embodiment, the length of the second time window is predefined.

As a sub-embodiment of the above embodiment, the length of the second time window comprises one of {9 microseconds, 16 microseconds, 25 microseconds, 5 microseconds, 8 microseconds, 13 microseconds }.

Example 11

Embodiment 11 is a block diagram illustrating a processing apparatus used in a first node, as shown in fig. 11. In embodiment 11, a first node 1100 comprises a first receiver 1101 and a first transmitter 1102.

For one embodiment, the first receiver 1101 includes at least one of the antenna 452, the transmitter/receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, and the data source 467 of fig. 4 of the present application.

For one embodiment, the first transmitter 1102 includes at least one of the antenna 420, the transmitter/receiver 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475, and the memory 476 of fig. 4 of the present application.

In embodiment 11, the first receiver 1101 performs first access detection in a first sub-band using a target multiple antenna related parameter; the first transmitter 1102 transmits a first signal in a first time-frequency resource block using a first multi-antenna related parameter; wherein the first access detection is used to determine that the first sub-band may be used to transmit the first signal; the first time-frequency resource block belongs to a first time window in a time domain; a first time sub-window belongs to the first time window, and the starting time of the first time sub-window is not earlier than the ending time of the first time-frequency resource block; the target multi-antenna related parameter is used to determine whether the first time sub-window is shared with a target recipient of the first signal for transmitting a first type of signal; when the target multi-antenna related parameter is a second multi-antenna related parameter, the first time sub-window is shared to the target receiver of the first signal for transmitting the first type of signal; when the target multi-antenna related parameter is a third multi-antenna related parameter, the first time sub-window is not shared to the target receiver of the first signal for transmitting the first type of signal.

For one embodiment, the first node 1100 is a user equipment.

As an embodiment, the first node 1100 is a relay node.

For one embodiment, the first node 1100 is a base station.

As an example, the first node 1100 is a vehicle communication device.

For one embodiment, the first node 1100 is a user equipment supporting V2X communication.

As an embodiment, the first node 1100 is a relay node supporting V2X communication.

As an embodiment, the first node 1100 is a base station device supporting IAB.

Example 12

Embodiment 12 is a block diagram illustrating a processing apparatus used in a first node, as shown in fig. 12. In embodiment 12, the second node 1200 comprises a second transmitter 1201 and a second receiver 1202.

For one embodiment, second transmitter 1201 includes at least one of antenna 420, transmitter/receiver 418, multi-antenna transmit processor 471, transmit processor 416, controller/processor 475, and memory 476 of fig. 4.

For one embodiment, second receiver 1202 may include at least one of antenna 452, transmitter/receiver 454, multi-antenna receive processor 458, receive processor 456, controller/processor 459, memory 460, and data source 467, shown in fig. 4 and described herein.

In embodiment 12, the second receiver 1201 receives a first signal in a first time-frequency resource block; the second transmitter 1202 transmitting a first type of signal in a first time sub-window; or, abstaining from transmitting the first type of signal in the first time sub-window; wherein a first multi-antenna related parameter is used for transmitting the first signal; target multi-antenna related parameters are used to perform a first access detection at a first sub-band, the first access detection being used to determine that the first sub-band may be used to transmit the first signal; the first time-frequency resource block belongs to a first time window in a time domain; a first time sub-window belongs to the first time window, and the starting time of the first time sub-window is not earlier than the ending time of the first time-frequency resource block; the target multi-antenna related parameter is used to determine whether the first time sub-window is shared with a target recipient of the first signal for transmitting a first type of signal; when the target multi-antenna related parameter is a second multi-antenna related parameter, the first time sub-window is shared to the target receiver of the first signal for transmitting the first type of signal; when the target multi-antenna related parameter is a third multi-antenna related parameter, the first time sub-window is not shared to the target receiver of the first signal for transmitting the first type of signal.

As an embodiment, the spatial direction of the second multi-antenna related parameter comprises a spatial direction of the third multi-antenna related parameter.

For one embodiment, the second transmitter 1202 transmits a first information block; wherein the first information block is used to determine the target multi-antenna related parameter from a set of candidate multi-antenna related parameters, the set of candidate multi-antenna related parameters comprising the second multi-antenna related parameter and the third multi-antenna related parameter.

As an embodiment, the first signal comprises a second information block used to indicate whether the first temporal sub-window is shared to a target recipient of the first signal for transmitting the first type of signal.

For one embodiment, the second transmitter 1202 transmits a third information block; wherein the third information block is used to determine the first multi-antenna related parameter and the first time-frequency resource block.

As an embodiment, the performer of the first access detection autonomously determines the target multi-antenna related parameter from the second multi-antenna related parameter and the third multi-antenna related parameter.

For one embodiment, the second node 1200 is a user equipment.

As an embodiment, the second node 1200 is a relay node.

For one embodiment, the second node 1200 is a base station.

As an example, the second node 1200 is a vehicle communication device.

For one embodiment, the second node 1200 is a user equipment supporting V2X communication.

As an embodiment, the second node 1200 is a relay node supporting V2X communication.

As an embodiment, the second node 1200 is a base station device supporting IAB.

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 above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The first node in this application includes but not limited to wireless communication devices such as cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, aircraft, unmanned aerial vehicle, telecontrolled aircraft. The second node in this application includes but not limited to wireless communication devices such as cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, aircraft, unmanned aerial vehicle, remote control plane. User equipment or UE or terminal 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, aircraft, unmanned aerial vehicle, wireless communication equipment such as remote control aircraft. The base station device, the base station or the network side device 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 air base station, 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:

2. The first node of claim 1, wherein the spatial direction of the second multi-antenna related parameter comprises the spatial direction of the third multi-antenna related parameter.

3. The first node according to claim 1 or 2, comprising:

the first receiver receives a first information block;

4. The first node according to any of claims 1 to 3, wherein the first signal comprises a second information block, the second information block being used to indicate whether the first temporal sub-window is shared with a target recipient of the first signal for transmitting the first type of signal.

5. The first node according to any of claims 1 to 4, comprising:

the first receiver receiving a third information block;

6. The first node according to any of claims 1 to 5, wherein the first node autonomously determines the target multi-antenna related parameter from the second multi-antenna related parameter and the third multi-antenna related parameter.

7. The first node according to any of claims 1 to 6, wherein the first multi-antenna related parameter is used for determining the third multi-antenna related parameter.

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

9. A method of a first node used for wireless communication, comprising:

10. A method of a second node used for wireless communication, comprising:

receiving a first signal in a first time-frequency resource block;