WO2024055243A1

WO2024055243A1 - Sidelink communication method and terminal device

Info

Publication number: WO2024055243A1
Application number: PCT/CN2022/119047
Authority: WO
Inventors: 赵振山; 张世昌
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2024-03-21

Abstract

Disclosed in the present application are a sidelink communication method and a terminal device. The sidelink communication method comprises: a terminal device performs sidelink transmission by using a first frequency domain units, b second frequency domain units, and c third frequency domain units (S1201), wherein the a first frequency domain units are selected from a first frequency domain range, the b second frequency domain units are selected from a second frequency domain range, and the c third frequency domain units are selected from a third frequency domain range; the first frequency domain range, the second frequency domain range, and the third frequency domain range are located in a first resource block set or a first channel; and a, b and c are positive integers. According to embodiments of the present application, resources in the first frequency domain range, the second frequency domain range and the third frequency domain range are used for transmission, so that the OCB requirements can be flexibly satisfied, and the method can be suitable for more sidelink communication scenarios.

Description

Sideline communication method and terminal equipment

Technical field

The present application relates to the field of communication, and more specifically, to a side communication method and terminal equipment.

Background technique

When the sidelink (SL) system works in the unlicensed spectrum (SL-U), it needs to meet the corresponding requirements, such as the occupied channel bandwidth (OCB) and other requirements. In order to meet the OCB requirements, the interlaced resource block (IRB) structure is introduced for some subcarrier spacing in the NR-based access to unlicensed spectrum (NR-U) system. It is necessary to consider how to meet the OCB requirements in more sidelink scenarios.

Contents of the invention

The embodiment of the present application provides a side communication method, including:

The terminal equipment uses a first frequency domain unit, b second frequency domain units, and c third frequency domain units to perform sideline transmission;

Wherein, the a first frequency domain units are selected from the first frequency domain range, the b second frequency domain units are selected from the second frequency domain range, and the c third frequency domain units are selected from the second frequency domain range. The unit is selected from the third frequency domain range, the first frequency domain range, the second frequency domain range and the third frequency domain range are located in the first resource block set or the first channel, a, b and c are positive integers.

An embodiment of the present application provides a terminal device, including:

A communication unit, used for utilizing a first frequency domain unit, b second frequency domain units, and c third frequency domain units for sideline transmission;

An embodiment of the present application provides a terminal device, including a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the above-mentioned side communication method.

An embodiment of the present application provides a chip for implementing the above-mentioned side communication method.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned side communication method.

Embodiments of the present application provide a computer-readable storage medium for storing a computer program. When the computer program is run by a device, it causes the device to perform the above-mentioned side communication method.

An embodiment of the present application provides a computer program product, including computer program instructions, which cause the computer to execute the above-mentioned side communication method.

An embodiment of the present application provides a computer program that, when run on a computer, causes the computer to execute the above side communication method.

The embodiment of the present application uses resources in the first frequency domain range, the second frequency domain range, and the third frequency domain range for transmission, which is conducive to flexibly meeting OCB requirements and can be applied to more sideline communication scenarios.

Description of drawings

Figure 1 is a schematic diagram of intra-network communication according to an embodiment of the present application.

Figure 2 is a schematic diagram of partial network coverage for sideline communications according to an embodiment of the present application.

Figure 3 is a schematic diagram of network coverage outer row communication according to an embodiment of the present application.

Figure 4 is a schematic diagram of a central control node according to an embodiment of the present application.

Figure 5 is a schematic diagram of unicast according to an embodiment of the present application.

Figure 6 is a schematic diagram of multicast according to an embodiment of the present application.

Figure 7 is a schematic diagram of broadcasting according to an embodiment of the present application.

Figures 8a, 8b and 8c are schematic diagrams of the time slot structure in NR-V2X according to embodiments of the present application.

Figure 9 is a schematic diagram of a comb tooth structure according to an embodiment of the present application.

Figure 10 is a schematic diagram of another comb tooth structure according to an embodiment of the present application.

Figure 11 is a schematic diagram of a resource pool configured on an unlicensed spectrum according to an embodiment of the present application.

Figure 12 is a schematic flow chart of a side communication method according to an embodiment of the present application.

Figure 13 is a schematic flow chart of a side-link communication method according to another embodiment of the present application.

Figure 14 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Figure 15 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Figure 16 is a schematic diagram of the starting and ending positions of multiple frequency domain ranges included in the RB set.

Figure 17 is a schematic diagram of multiple frequency domain ranges and guard frequency bands included in the RB set.

Figure 18 is a schematic diagram showing that the frequency domain ranges of different resource pools do not overlap.

Figure 19 is a schematic diagram showing that the first frequency domain range and the third frequency domain range of different resource pools are the same.

Figure 20 is a schematic diagram of selecting frequency domain units from multiple frequency domain ranges to carry PSSCH and/or PSCCH.

Figure 21 is a schematic diagram of selecting frequency domain units from multiple frequency domain ranges to carry PSFCH.

Figure 22 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Figure 23 is a schematic block diagram of a chip according to an embodiment of the present application.

Figure 24 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), wireless fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to Everything (V2X) and other terminals Direct communication to the terminal, etc., the embodiments of the present application can also be applied to these communication systems.

In an implementation manner, the communication system in the embodiment of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA)Network scene.

In one implementation, the communication system in the embodiment of the present application can be applied to unlicensed spectrum, where the unlicensed spectrum can also be considered as shared spectrum; or, the communication system in the embodiment of the present application can also be applied to licensed spectrum , among which, licensed spectrum can also be considered as non-shared spectrum.

The embodiments of this application describe various embodiments in combination with network equipment and terminal equipment. The terminal equipment may also be called user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.

The terminal device can be a station (STATION, ST or STA) in the WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, or a personal Digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, Or terminal equipment in the future evolved Public Land Mobile Network (PLMN) network, etc.

In the embodiment of this application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water (such as ships, etc.) or under the water (such as submarines, etc.); it can also be deployed on In the air (such as airplanes, balloons, satellites, etc.).

In the embodiment of this application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, or an augmented reality (Augmented Reality, AR) terminal. Equipment, terminal equipment in personal internet of things (PIoT), wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, remote medical Wireless terminal equipment, wireless terminal equipment in smart grid (smart grid), wireless terminal equipment in transportation safety (transportation safety), wireless terminal equipment in smart city (smart city) or wireless terminal equipment in smart home (smart home) Terminal equipment, etc.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones. Use, such as various types of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In the embodiment of this application, the network device may be a device used to communicate with mobile devices. The network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA. , or it can be a base station (NodeB, NB) in WCDMA, or an evolutionary base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network network equipment (gNB) or network equipment in the future evolved PLMN network or network equipment in the NTN network, etc.

As an example and not a limitation, in the embodiment of the present application, the network device may have mobile characteristics, for example, the network device may be a mobile device. Optionally, the network device can be a satellite or balloon station. For example, the satellite can be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite ) satellite, etc. Optionally, the network device may also be a base station installed on land, water, etc.

In this embodiment of the present application, network equipment can provide services for a cell, and terminal equipment communicates with the network equipment through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell. The cell can be a network equipment ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell). The small cell here can include: urban cell (Metro cell), micro cell (Micro cell), pico cell ( Pico cell), femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission services.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship that describes related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and they exist alone. B these three situations. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

It should be understood that the "instruction" mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.

In the description of the embodiments of this application, the term "correspondence" can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed, configuration and being. Configuration and other relationships.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following related technologies can be optionally combined with the technical solutions of the embodiments of the present application, and they all belong to the embodiments of the present application. protected range.

Sidelink communication under different network coverage environments:

In side-link communication, according to the network coverage of the communicating terminal, it can be divided into side-link communication with network coverage, side-link communication with partial network coverage, and side-link communication with network coverage, as shown in Figure 1, Figure 2, and Figure 1, respectively. 3 and Figure 4.

Figure 1: In side-link communication within network coverage, all terminals performing side-link communication are within the coverage of the same base station. Therefore, the above-mentioned terminals can perform side-link communication based on the same side-link configuration by receiving configuration signaling from the base station. .

Figure 2: When part of the network covers side-link communication, some terminals performing side-link communication are located within the coverage of the base station. These terminals can receive the configuration signaling of the base station and perform side-link communication according to the configuration of the base station. Terminals located outside the network coverage cannot receive the configuration signaling of the base station. In this case, the terminal outside the network coverage will be determined based on the pre-configuration information and the information carried in the Physical Sidelink Broadcast Channel (PSBCH) sent by the terminal located within the network coverage. Side row configuration for side row communication.

Figure 3: For side-link communication outside network coverage, all terminals performing side-link communication are located outside the network coverage, and all terminals determine the side-link configuration based on pre-configuration information for side-link communication.

Figure 4: For side-line communication with a central control node, multiple terminals form a communication group. The communication group has a central control node, which can also be called a cluster head terminal (Cluster Header, CH). The central control node has at least one of the following functions: responsible for the establishment of communication groups; joining and leaving group members; coordinating resources, allocating sideline transmission resources to other terminals, receiving sideline feedback information from other terminals; communicating with other communication groups Carry out resource coordination and other functions.

D2D/V2X:

Device to Device (D2D) communication is a side link (SL, Sidelink) transmission technology that uses terminal-to-terminal direct communication, unlike the traditional cellular system in which communication data is received or sent through the base station. different. Therefore, it has higher spectrum efficiency and lower transmission delay. There are two transmission modes defined in 3GPP: first mode and second mode.

First mode: The transmission resources of the terminal are allocated by the base station, and the terminal sends data on the sidelink according to the resources allocated by the base station. The base station can dynamically allocate sidelink transmission resources to the terminal, or can allocate semi-static transmission resources to the terminal. As shown in Figure 1, the terminal is located within the network coverage, and the network allocates transmission resources for sidelink transmission to the terminal.

Second mode: The terminal selects a resource in the resource pool for data transmission. As shown in Figure 3, the terminal is located outside the cell coverage, and the terminal independently selects transmission resources from the preconfigured resource pool for sidelink transmission. Or as shown in Figure 1, the terminal independently selects transmission resources from the resource pool configured in the network for side transmission.

NR-V2X:

In NR-V2X, autonomous driving needs to be supported, so higher requirements are put forward for data interaction between vehicles, such as higher throughput, lower latency, higher reliability, larger coverage, More flexible resource allocation, etc.

In NR-V2X, unicast, multicast and broadcast transmission methods are introduced. For unicast transmission, there is only one receiving terminal. As shown in Figure 5, unicast transmission is performed between UE1 and UE2. For multicast transmission, the receiving end is all terminals in a communication group, or all terminals within a certain transmission distance. As shown in Figure 6, UE1, UE2, UE3 and UE4 form a communication group, in which UE1 sends data, and other terminal devices in the group are receiving terminals. For the broadcast transmission mode, the receiving end is any terminal around the sending end terminal. In Figure 7, UE1 is the sending end terminal, and the other terminals around it, UE2-UE6, are all receiving end terminals.

NR-V2X system frame structure:

The time slot structure in NR-V2X is shown in Figure 8a and Figure 8b: Figure 8a shows the time slot structure that does not include the Physical Sidelink Feedback Channel (PSFCH) in the time slot. Figure 8b shows the time slot structure including PSFCH.

In NR-V2X, the Physical Sidelink Control Channel (PSCCH) starts from the second sidelink symbol of the time slot in the time domain and occupies 2 or 3 Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division) Multiplexing, OFDM) symbols can occupy {10,12 15,20,25} physical resource blocks (Physical Resource Block, PRB) in the frequency domain. In order to reduce the complexity of the UE's blind detection of PSCCH, only one number of PSCCH symbols and one number of PRBs are allowed to be configured in a resource pool. In addition, because the sub-channel (sub-channel) is the minimum granularity of physical sidelink shared channel (PSSCH) resource allocation in NR-V2X. The number of PRBs occupied by PSCCH must be less than or equal to the number of PRBs contained in a sub-channel in the resource pool to avoid additional restrictions on PSSCH resource selection or allocation. PSSCH also starts from the second sidelink symbol of the time slot in the time domain. The last time domain symbol in the time slot is the Guard Period (GP) symbol, and the remaining symbols are mapped to the PSSCH. The data on the first siderow symbol in this time slot is a repetition of the data on the second siderow symbol. Usually the receiving terminal uses the first siderow symbol as automatic gain control (Automatic Gain Control, AGC) symbol, the data on this symbol is generally not used for data demodulation. PSSCH occupies K sub-channels in the frequency domain, and each sub-channel includes A consecutive PRBs, as shown in Figure 8a.

When the time slot contains the PSFCH channel, the penultimate symbol in the time slot is used for PSFCH channel transmission, and the penultimate symbol can be used as AGC. The data on this symbol is the penultimate symbol used for PSFCH channel transmission. For the repetition of data, a time domain symbol before the PSFCH channel is used as a GP symbol, as shown in Figure 8b.

When the time slot contains the PSFCH channel, the penultimate and penultimate symbols in the time slot are used for PSFCH channel transmission. The data on the penultimate symbol is a repetition of the data on the penultimate symbol. In the PSFCH One time domain symbol before the channel is used as the GP symbol, as shown in Figure 8c.

Unlicensed spectrum:

Unlicensed spectrum is a spectrum allocated by countries and regions that can be used for radio equipment communication. This spectrum is usually considered a shared spectrum, that is, communication equipment in different communication systems can use the spectrum as long as it meets the regulatory requirements set by the country or region on the spectrum. To use this spectrum, there is no need to apply for an exclusive spectrum authorization from the government. Unlicensed spectrum can also be called shared spectrum, unlicensed spectrum, unlicensed spectrum, unlicensed frequency band, unlicensed frequency band or unlicensed frequency band, etc.

In order to allow various communication systems that use unlicensed spectrum for wireless communications to coexist amicably on this spectrum, some countries or regions have stipulated regulatory requirements that must be met when using unlicensed spectrum. For example, communication equipment follows the "Listen Before Talk (LBT)" principle, that is, before transmitting signals on a channel in an unlicensed spectrum, communication equipment needs to perform channel listening. Only when the channel listening result is a channel The communication device can send signals only when it is idle; if the channel listening result of the communication device on the unlicensed spectrum channel is that the channel is busy, the communication device cannot send signals. In order to ensure fairness, in one transmission, the duration of signal transmission by communication equipment using unlicensed spectrum channels cannot exceed the Maximum Channel Occupancy Time (MCOT).

Comb structure in NR-U system:

For NR-U, communicating on unlicensed frequency bands often requires meeting regulatory requirements. For example, if a terminal wants to communicate using an unlicensed frequency band, the frequency band range occupied by the terminal needs to be greater than or equal to 80% of the system bandwidth. Therefore, in order to allow as many users to access the channel as much as possible within the same period of time, an interlace-based resource configuration method is defined in NR-U. A comb resource includes N discrete PRBs in the frequency domain. A total of M comb resources are included in the frequency band. The PRBs included in the mth comb are {m, M+m, 2M+m, 3M+m,… }. For example, as shown in Figure 9, the system bandwidth includes 30 RBs, including 5 comb teeth (ie, M=5), and each comb tooth includes 6 PRBs (ie, N=6). The frequency domain spacing of two adjacent PRBs in a comb tooth is the same, that is, 5 PRBs apart. For another example, as shown in Figure 10, the channel bandwidth includes 20 RBs, including 5 IRBs (i.e., M=5). Each IRB includes 4 RBs (i.e., N=4). Two adjacent RBs belonging to the same IRB The frequency domain intervals of RBs are the same, that is, they are 5 RBs apart. The numbers in the boxes in Figure 10 represent the IRB indexes.

It should be noted that the PRB included in a comb tooth can also be called an Interlaced Resource Block (IRB). It should be noted that in the embodiment of the present application, the comb tooth and IRB can mean the same meaning or The two are interchangeable; the comb index and the IRB index can represent the same meaning or they are interchangeable; IRB index B represents a set of IRBs with the same index B.

Resource block collection:

Figure 11 is an example of a resource pool configured on an unlicensed spectrum provided by this embodiment of the present application. In the SL-U system, a resource pool is configured on the unlicensed spectrum or shared spectrum for sidelink transmission through preconfiguration information or network configuration information. In some implementations, the resource pool includes M1 resource block sets (Resource Block Set, RB set). Among them, a resource block set includes M2 resource blocks (Resource Block, RB), and M1 and M2 are positive integers. In some embodiments, a resource block set corresponds to a channel in the unlicensed spectrum (or shared spectrum), or a resource block set corresponds to the minimum frequency domain granularity for LBT, or a resource block set corresponds to an LBT subband. .

For example, the bandwidth corresponding to a channel on the unlicensed spectrum is 20MHz, that is, the bandwidth corresponding to a resource block set is also 20MHz. Alternatively, the bandwidth of a channel on an unlicensed spectrum is 20MHz, corresponding to M3 RBs. The M3 RBs are all RBs included in a channel, or all RBs in a channel that can be used for data transmission, such as M3=100 (corresponding to 15kHz subcarrier spacing), then one RB set also corresponds to 100 RBs, that is, M2=100.

For another example, on unlicensed spectrum, it is necessary to judge whether the unlicensed spectrum can be used based on the results of LBT. The minimum frequency domain granularity for LBT is 20MHz, then one RB set corresponds to the number of RBs included in 20MHz. Or a RB set includes M2 = 100 RBs (corresponding to 15kHz subcarrier spacing), and the minimum frequency domain granularity of LBT is an RB set, which is 100 RBs.

It should be noted that in the embodiment of the present application, the resource block set may also be called a channel or LBT subband, which is not limited in the embodiment of the present application.

In some embodiments, the frequency domain starting position of the resource pool is the same as the frequency domain starting position of the first resource block set among the M1 resource block sets, wherein the first resource block set is the The resource block set with the lowest frequency domain position among the M1 resource block sets.

In some embodiments, the frequency domain end position of the resource pool is the same as the frequency domain end position of the second resource block set in the M1 resource block sets, wherein the second resource block set is the M1 resource block set. The resource block set with the highest frequency domain position in the resource block set.

For example, the resource pool includes M1 = 3 resource block sets, and the indexes of the corresponding resource block sets are resource block set 0, resource block set 1, and resource block set 2 respectively. Among them, resource block set 0 has the lowest frequency domain position. , the frequency domain position of resource block set 2 is the highest. Therefore, the frequency domain starting position of this resource pool is the same as the frequency domain starting position of resource block set 0, or the frequency domain starting position of this resource pool is based on resource block set 0. The frequency domain start position of the resource pool is determined; the frequency domain end position of the resource pool is the same as the frequency domain end position of the resource block set 2, or the frequency domain end position of the resource pool is determined based on the frequency domain end position of the resource block set 2.

In some embodiments, a guard band (Guard Band, GB) is included between two adjacent resource block sets among the M1 resource block sets included in the resource pool. The guard band may also be called a guard band.

In some implementations, the frequency domain starting position and frequency domain size of the protection frequency band are determined according to preconfiguration information or network configuration information. The terminal obtains preconfiguration information or network configuration information, and the preconfiguration information or network configuration information is used to configure the protection band (GB). In some embodiments, guard bands are used to separate resource block sets (RB sets).

For example, as shown in Figure 11: 3 protection frequency bands are configured in the sideband bandwidth part (Bandwidth Part, BWP), corresponding to protection frequency band 0, protection frequency band 1 and protection frequency band 2 respectively. These 3 protection frequency bands separate 4 Collection of resource blocks. According to the frequency domain starting position of the side row BWP (i.e., the starting point of the side row BWP shown in Figure 11) and the frequency domain starting position of each protection frequency band (i.e., the starting point of the protection frequency band shown in Figure 11) and the protection The frequency domain size of the frequency band (that is, the length of the guard frequency band shown in Figure 11) can determine the frequency domain starting position and ending position of each resource block set. A side row resource pool is configured in the side row BWP, and the side row resource pool includes three resource block sets, namely resource block set 0 to resource block set 2. Therefore, the frequency domain starting position of the resource pool (i.e., the starting point of the resource pool shown in Figure 11) corresponds to the frequency domain starting position of the resource block set 0, and the frequency domain end position of the resource pool (i.e., the frequency domain end position of the resource pool shown in Figure 11 The end point of the resource pool shown) corresponds to the end position of the resource block set 2 in the frequency domain.

In some embodiments, a resource block set includes multiple comb teeth. For example, each resource block set in Figure 11 may include multiple comb teeth.

In some embodiments, one PSCCH may be transmitted in one or more resource block sets. In some further embodiments, one PSCCH may be transmitted in one or more resource block sets, and the PSCCH occupies one or more comb teeth in the one or more resource block sets.

In some embodiments, a PSSCH may be sent in one or more resource block sets. In still other embodiments, a PSSCH may be transmitted in one or more resource block sets, and the PSSCH occupies one or more comb teeth in the one or more resource block sets.

Interlaced Resource Block (or comb resource block, Interlaced Resource Block, IRB):

When operating on unlicensed spectrum, system design needs to consider regulatory requirements in the relevant region. For example, for unlicensed spectrum within the 5GHz frequency band, certain regulatory requirements include minimum OCB and maximum power spectral density (Power Spectral Density, PSD) requirements. For OCB requirements, when the equipment (base station or terminal equipment) uses the channel for data transmission, the occupied channel bandwidth shall not be less than 80% of a channel bandwidth. For areas with OCB/PSD regulatory requirements, the NR-based access to Unlicensed spectrum (NR-U) system introduces a frame structure based on the Interlaced Resource Block (IRB) structure design.

When the SL system operates in unlicensed spectrum, it needs to meet corresponding regulatory requirements, such as OCB. OCB requirements may include: the bandwidth occupied by the device's transmission needs to be greater than or equal to 80% of the channel bandwidth. The IRB structure is introduced in the NR-U system. The bandwidth of an IRB is greater than or equal to 80% of the channel bandwidth. The transmission of the base station or terminal occupies at least one IRB, which can meet the needs of OCB. For the first frequency range (Frequency Range 1, FR1), the SL system supports 15kHz, 30kHz and 60kHz subcarrier spacing. However, in the NR-U system, only the IRB structure for 15kHz and 30kHz subcarrier spacing is introduced, and the IRB structure is not supported for the 60kHz subcarrier spacing. Therefore, how to meet the requirements of OCB at 60kHz subcarrier spacing is a problem that needs to be solved.

In addition, in the NR SL system, the frequency domain resource size of the PSFCH channel is one PRB. In the SL-U system, how to design the PSFCH channel to meet the needs of OCB is also a problem that needs to be solved.

Figure 12 is a schematic flowchart of a side communication method 1200 according to an embodiment of the present application. This method can optionally be applied to the systems shown in Figures 1 to 7, but is not limited thereto. The method includes at least part of the following.

S1201. The terminal equipment uses a first frequency domain unit, b second frequency domain units, and c third frequency domain units to perform sideline transmission;

Among them, the a first frequency domain units are selected from the first frequency domain range, the b second frequency domain units are selected from the second frequency domain range, and the c third frequency domain units are selected from The first frequency domain range, the second frequency domain range and the third frequency domain range are selected from the third frequency domain range, and are located in the first resource block set or the first channel, and a, b and c are positive integers.

In this embodiment of the present application, the terminal device may be a sending terminal of the side-line communication system or a receiving terminal of the side-line communication system. The terminal device may itself select a frequency domain unit from the first resource block set or the first channel frequency domain range, or may receive indication information from other devices, and select the frequency domain unit from the first resource block set or the first channel frequency domain range according to the indication information. Select frequency domain units within the frequency domain unit, where other devices may include network devices or other terminal devices.

In this embodiment of the present application, the first resource block set or the first channel may include a first frequency domain range, a second frequency domain range, and a third frequency domain range. The second frequency domain range may be located between the first frequency domain range and the first frequency domain range. between the third frequency domain range. In other words, the first frequency domain range and the third frequency domain range can be regarded as two discrete frequency domain ranges. Therefore, the first resource block set or the first channel may include at least two discrete frequency domain ranges. If the maximum frequency domain spacing between frequency domain units within the discrete frequency domain range meets the OCB requirements, then using frequency domain units selected from the discrete frequency domain range for sideline transmission can meet the OCB requirements for sideline transmission. The first channel is a carrier or a portion of a carrier, consisting of a set of contiguous resource blocks (RBs) that perform a channel access procedure on a shared spectrum. In these resource blocks, channel access procedures can be performed in the shared spectrum.

In one implementation, the maximum frequency domain interval between the a first frequency domain units and the c third frequency domain units satisfies at least one of the following:

Occupied channel bandwidth (OCB) requirements;

Greater than or equal to 80% of the channel bandwidth.

In the embodiment of the present application, a and c may be greater than or equal to 1, as long as the maximum frequency domain interval meets the OCB requirement. For example, two first frequency domain units F1 and F2 are selected from the first frequency domain range, and three third frequency domain units F3, F4, and F5 are selected from the third frequency domain range. In one case, the interval between F1 and F5 is equal to 80% of the channel bandwidth, and the intervals of other frequency domain units are less than 80% of the channel bandwidth. In another case, the distance between F1 and F3, F4 and F5 is greater than or equal to 80% of the channel bandwidth, and the distance between F2 and F3, F4 and F5 is less than 80% of the channel bandwidth. In another case, the distance between F1 and F3, F4 and F5 is greater than or equal to 80% of the channel bandwidth, and the distance between F2 and F3, F4 and F5 is also greater than or equal to 80% of the channel bandwidth.

In one implementation, the first frequency domain range includes A first frequency domain units, the third frequency domain range includes C third frequency domain units, and the second frequency domain range includes B second frequency domain units. Unit, where A, B and C are positive integers, a is less than or equal to A, b is less than or equal to B, and c is less than or equal to C.

In one embodiment, the first frequency domain unit includes PRBs or sub-channels, the second frequency domain unit includes PRBs or sub-channels, and the third frequency domain unit includes PRBs or sub-channels, wherein one sub-channel includes frequency Multiple PRBs with consecutive domains.

In this embodiment of the present application, the frequency domain unit may include PRBs or sub-channels, where one sub-channel includes multiple consecutive PRBs in the frequency domain. For example, the first frequency domain range includes A PRBs, the third frequency domain range includes C PRBs, and the second frequency domain range includes B PRBs. For another example, the first frequency domain range includes A PRBs, the third frequency domain range includes C PRBs, and the second frequency domain range includes B sub-channels.

In one implementation, the value of at least one of A, B, and C is determined based on protocol predefinition, preconfiguration information, or network configuration information.

In one implementation, A=1, C=1. At this time, the frequency domain spacing between A first frequency domain units and C third frequency domain units meets the requirements of OCB.

In one embodiment, A and C can also be greater than 1. The values of A and C can be the same or different. Optionally, B can also be a positive integer.

In one implementation, the frequency domain interval between at least one first frequency domain unit in the first frequency domain range and at least one third frequency domain unit in the third frequency domain range satisfies at least one of the following:

OCB demand;

Greater than or equal to 80% of the channel bandwidth.

In one embodiment, the channel bandwidth is a nominal channel bandwidth, which includes the bandwidth of the first resource block set and/or the bandwidth of the first channel, or the nominal channel bandwidth is 20 MHz. .

In one implementation, the frequency domain starting position of the first frequency domain range is determined based on at least one of the following:

The frequency domain starting position of the first resource block set;

The frequency domain starting position of the first channel;

The frequency domain starting position of the resource pool.

In one implementation, the frequency domain end position of the third frequency domain range is determined based on at least one of the following:

The frequency domain end position of the first resource block set;

The frequency domain end position of the first channel;

The frequency domain end position of the resource pool.

For example, the frequency domain starting position of the first resource block set is PRB 0 and the frequency domain ending position is PRB 99, the frequency domain starting position of the first frequency domain range is PRB 0, and the frequency domain ending position of the third frequency domain range It’s PRB 99.

For another example, the frequency domain starting position of the first channel is PRB 0 and the frequency domain ending position is PRB 99, the frequency domain starting position of the first frequency domain range is PRB 0, and the frequency domain ending position of the third frequency domain range is PRB 0. PRB 99.

For another example, the frequency domain start position of the resource pool is PRB 0 and the frequency domain end position is PRB 99, the frequency domain start position of the first frequency domain range is PRB 0, and the frequency domain end position of the third frequency domain range is PRB 99.

In one implementation, the first frequency domain range and the second frequency domain range are continuous or discontinuous. For example, the first frequency domain range includes PRB 0 to PRB 3, and the second frequency domain range includes PRB 4 to PRB 96, both of which are continuous. For another example, the first frequency domain range includes PRB 0 to PRB 2, and the second frequency domain range includes PRB 4 to PRB 96. The two are discontinuous.

In one implementation, the second frequency domain range and the third frequency domain range are continuous or discontinuous. For example, the second frequency domain range includes PRB 4 to PRB 96, and the third frequency domain range includes PRB 97 to PRB 99. The two are continuous. For another example, the second frequency domain range includes PRB 4 to PRB 96, and the third frequency domain range includes PRB 98 to PRB 99. The two are discontinuous.

In one implementation, the first frequency domain range and the third frequency domain range are determined based on the sidelink bandwidth part BWP configuration information, and the second frequency domain range is determined based on the resource pool configuration information. In the embodiment of the present application, the first frequency domain range and the third frequency domain range may be a common frequency domain range, for example, the first frequency domain range and the third frequency domain range used by the terminal equipments UE1 and UE2 for sidelink transmission. The same, both are determined based on BWP configuration information. However, the second frequency domain ranges of UE1 and UE2 are determined based on their respective resource pool configuration information, that is, the second frequency domain ranges of UE1 and UE2 may be different.

In one implementation, the first frequency domain range, the second frequency domain range and the third frequency domain range are determined based on resource pool configuration information. In this embodiment of the present application, the first frequency domain range, the second frequency domain range and the third frequency domain range of different terminal devices can be determined according to their respective resource pool configuration information. The three can be different, the same or partially the same. .

In one implementation, the first frequency domain ranges of different resource pool configurations completely overlap, partially overlap, or do not overlap. For example, the first frequency domain range configured in the first resource pool includes PRB 0 and PRB 1, and the first frequency domain range configured in the second resource pool also includes PRB 0 and PRB 1, and the two completely overlap. For another example, the first frequency domain range configured in the first resource pool includes PRB 0 and PRB 1, and the first frequency domain range configured in the second resource pool also includes PRB 1 and PRB 2, and the two partially overlap. For another example, the first frequency domain range configured in the first resource pool includes PRB 0 and PRB 1, and the first frequency domain range configured in the second resource pool also includes PRB 2 and PRB 3, and the two do not overlap.

In one implementation, the third frequency domain ranges of different resource pool configurations completely overlap, partially overlap, or do not overlap. For example, the third frequency domain range configured in the first resource pool includes PRB 98 and PRB 99, and the third frequency domain range configured in the second resource pool also includes PRB 98 and PRB 99, and the two completely overlap. For another example, the third frequency domain range configured in the first resource pool includes PRB 97 and PRB 98, and the third frequency domain range configured in the second resource pool includes PRB 98 and PRB 99, and the two partially overlap. For another example, the third frequency domain range configured in the first resource pool includes PRB 96 and PRB 97, and the third frequency domain range configured in the second resource pool includes PRB 98 and PRB 99, and the two do not overlap.

In one embodiment, in the case where the sidelink BWP or resource pool includes a plurality of first resource block sets and/or a plurality of first channels, the plurality of first resource block sets and/or the plurality of first channels The first frequency domain ranges in the channels have the same size and/or range, and the plurality of first resource block sets and/or the third frequency domain ranges in the plurality of first channels have the same size and/or range. For example, the side row BWP includes multiple first resource block sets RB set 1 and RB set 2. The size of the first frequency domain range in RB set 1 is 2 PRBs, namely PRB 0 and PRB 1; the size of the first frequency domain range in RB set 2 is 2 PRBs, namely PRB 0 and PRB 1. The size of the third frequency domain range in RB set 1 is 2 PRBs, namely PRB 98 and PRB 99; the size of the third frequency domain range in RB set 2 is 2 PRBs, namely PRB 98 and PRB 99. For another example, the resource pool includes multiple first resource block sets RB set 1 and RB set 2. The size of the first frequency domain range in RB set 1 is 2 PRBs, namely PRB 0 and PRB 1; the size of the first frequency domain range in RB set 2 is 2 PRBs, namely PRB 0 and PRB 1. The size of the third frequency domain range in RB set 1 is 2 PRBs, namely PRB 98 and PRB 99; the size of the third frequency domain range in RB set 2 is 2 PRBs, namely PRB 98 and PRB 99.

In one implementation, the determination method of the a first frequency domain unit includes at least one of the following:

a first frequency domain unit randomly selected within the first frequency domain range;

Select a first frequency domain unit with the lowest frequency domain position within the first frequency domain range;

Select a first frequency domain unit with the highest frequency domain position within the first frequency domain range.

For example, the first frequency domain range includes PRB 0, PRB 1, PRB 2, and PRB 3. In one case, if a is 1, a PRB can be randomly selected as the first frequency domain unit, such as PRB 1. If a is 2, two PRBs can be randomly selected as the first frequency domain unit, such as PRB1 and PRB3. In another case, if a is 1, PRB 0 with the lowest frequency domain position can be selected as the first frequency domain unit. If a is 2, PRB 0 and PRB 1 with the lowest frequency domain position can be selected as the first frequency domain unit. In another case, if a is 1, PRB 3 with the highest frequency domain position can be selected as the first frequency domain unit. If a is 2, PRB 2 and PRB 3 with the highest frequency domain positions can be selected as the first frequency domain unit.

In one implementation, the determination method of the c third frequency domain units includes at least one of the following:

c third frequency domain units randomly selected within the third frequency domain range;

Select the c third frequency domain units with the lowest frequency domain positions within the third frequency domain range;

Select the c third frequency domain units with the highest frequency domain positions within the third frequency domain range.

For example, the third frequency domain range includes PRB 97, PRB 98, and PRB 99. In one case, if a is 1, a PRB can be randomly selected as the third frequency domain unit, such as PRB 98. If a is 2, two PRBs can be randomly selected as the third frequency domain unit, such as PRB97 and PRB99. In another case, if a is 1, PRB 97 with the lowest frequency domain position can be selected as the third frequency domain unit. If a is 2, PRB 97 and PRB 98 with the lowest frequency domain position can be selected as the third frequency domain unit. In another case, if a is 1, PRB 99 with the highest frequency domain position can be selected as the third frequency domain unit. If a is 2, PRB 98 and PRB 99 with the highest frequency domain positions can be selected as the third frequency domain unit.

In one implementation, the a PRBs selected by different terminal devices in the first frequency domain range are the same.

In an implementation manner, the c PRBs selected by different terminal devices in the third frequency domain are the same.

In one implementation, the sidelink channels and/or sidelink signals to be transmitted are mapped on the b second frequency domain units, the first data is mapped on the a first frequency domain units, and the c first frequency domain units are mapped on The second data is mapped on the third frequency domain unit.

In one implementation, the first data is data generated based on redundant bits, padding bits, or determined based on data mapped on the b second frequency domain units;

The second data is determined based on data generated by redundant bits, stuffing bits, or data mapped on the b second frequency domain units.

In this embodiment of the present application, the first data and the second data may be the same data or different data. That is to say, the data mapped on a first frequency domain units and the data mapped on c third frequency domain units used by the terminal equipment for side-link transmission may be the same data or different data. For example, a first frequency domain unit is mapped to data generated based on redundant bits, and c third frequency domain units are mapped to data generated based on padding bits. For another example, the data mapped on a first frequency domain units and c third frequency domain units are partial repetitions of the data mapped on b second frequency domain units.

In one implementation, the sidelink channel to be transmitted is at least one of the following: physical sidelink shared channel (PSSCH), physical sidelink control channel (PSCCH), physical sidelink feedback channel (PSFCH) and sidelink synchronization Signal block (Sidelink Synchronization Signal Block, S-SSB).

In one implementation, the sidelink signal to be transmitted is at least one of the following: demodulation reference signal (Demodulation Reference Signal, DMRS), channel state information reference signal (Channel State Information Reference Signal, CSI-RS), correlation Tracking reference signal (Phase Tracking Reference Signal, PTRS), synchronization signal (Synchronization Signal, SS).

In one embodiment, when the sidelink channel to be transmitted is a PSFCH, the transmission resources of the PSFCH in the second frequency domain range are based on the PSSCH corresponding to the PSFCH occupied in the second frequency domain range. The index corresponding to the sub-channel is determined.

For example, UE1 receives the PSSCH from UE2, and the indices corresponding to the subchannels occupied by the PSSCH in the second frequency domain are subchannel 0, subchannel 1, and subchannel 2. UE1 sends PSFCH to UE2 for this PSSCH. The transmission resources of the PSFCH in the second frequency domain range are determined according to the index corresponding to the first subchannel occupied by the PSSCH in the second frequency domain range, that is, subchannel 0.

In one implementation, when the sidelink channel to be transmitted is the PSFCH, the transmission resources of the PSFCH include one PRB in the second frequency domain range, a PRB in the first frequency domain range, and For the c PRBs in the third frequency domain, preferably, a=1 and c=1. Since PSFCH can only occupy one PRB, in order to make PSFCH meet OCB requirements, one PRB can be selected in the second frequency domain to carry PSFCH, and a PRB and the third frequency domain can be selected in the first frequency domain. c PRBs are selected, and the maximum frequency domain spacing between a PRB and c PRBs is greater than or equal to 80% of the nominal channel bandwidth, so that the transmission resources of PSFCH can meet the requirements of OCB.

In one implementation, when the sidelink channel to be transmitted is PSSCH/PSCCH, the sidelink subcarrier spacing is 60 kHz. In this way, for the case where the sidelink subcarrier spacing is 60kHz, the PSSCH transmission resources can be greater than or equal to 80% of the nominal channel bandwidth, which can meet OCB requirements. For example, b sub-channels are selected to carry PSSCH in the second frequency domain range, a PRBs are selected in the first frequency domain range, c PRBs are selected in the third frequency domain range, one of a PRBs and c PRBs The maximum frequency domain separation between them is greater than or equal to 80% of the nominal channel bandwidth, so that the transmission resources of PSSCH can meet the needs of OCB.

In one implementation, when the sidelink channel to be transmitted is S-SSB, the sidelink subcarrier spacing is 15 kHz, 30 kHz or 60 kHz. In this way, for the sidelink subcarrier spacing supported in the first frequency range, the transmission resources of S-SSB can be greater than or equal to 80% of the nominal channel bandwidth, which can meet OCB requirements. For example, determine b PRBs in the second frequency domain to carry S-SSB, select a PRB in the first frequency domain, select c PRBs in the third frequency domain, a PRB and c The maximum frequency domain separation between PRBs is greater than or equal to 80% of the nominal channel bandwidth, so that the transmission resources of S-SSB can meet the needs of OCB.

In one implementation, when the sidelink channel to be transmitted is S-SSB, the sidelink subcarrier spacing is 15 kHz, 30 kHz or 60 kHz. In this way, for the sidelink subcarrier spacing supported in the first frequency range, the transmission resources of S-SSB can be greater than or equal to 80% of the nominal channel bandwidth, which can meet OCB requirements. Because in a channel or a resource block set, the frequency domain resource of S-SSB is usually located at the starting position of the frequency domain of the channel or resource block set, that is, the first PRB of S-SSB is the same as the first PRB of the channel or resource block set. The first PRB is the same. The frequency domain size of S-SSB includes Q PRBs. For example, Q=11. At this time, only c PRBs need to be selected in the third frequency domain range, so that the c PRBs are the same as S-SSB. The maximum frequency domain spacing between frequency domain starting positions is greater than or equal to 80% of the nominal channel bandwidth, so that the transmission resources of S-SSB can meet the needs of OCB.

In one implementation, the first channel is determined based on the PRB corresponding to the channel access process, or the first channel is determined based on the frequency domain range of the channel access process or the listen-before-talk (LBT) process.

In one implementation, the first set of resource blocks is located in the first channel.

In this embodiment of the present application, the frequency domain granularity of the first resource block set and/or the first channel may be at least one of the following:

Frequency domain granularity for channel access;

Frequency domain granularity of listen-before-talk (LBT);

20MHz.

In one implementation, as shown in Figure 13, the method 1300 further includes:

S1301. The terminal device obtains the first configuration information. The first configuration information is used to configure the guard band (Guard Band, GB). The frequency domain starting position and frequency domain ending position of the first resource block set are based on the first configuration information. Sure.

In this embodiment of the present application, the terminal device may receive the first configuration information from a network device or other terminal device, or may read the preconfigured first configuration information locally. The first frequency domain range, the second frequency domain range and the third frequency domain range may not include the guard frequency band.

The embodiment of the present application uses resources in the first frequency domain range, the second frequency domain range, and the third frequency domain range for transmission, which is conducive to flexibly meeting OCB requirements and can be applied to more sideline communication scenarios. For example, the first frequency domain range and the third frequency domain range are discrete frequency domain ranges. If the first frequency domain unit selected from the first frequency domain range and the third frequency domain unit selected from the third frequency domain range If the interval between them can be greater than or equal to 80% of the nominal channel bandwidth, the OCB requirements can be met. For example, this method can not only be used in scenarios where the subcarrier spacing is 60 kHz, but can also be applied to scenarios where PSFCH only occupies one PRB, and can also be applied to S-SSB transmission scenarios.

Figure 14 is a schematic block diagram of a terminal device 1400 according to an embodiment of the present application. The terminal device 1400 may include:

The communication unit 1401 is used to use a first frequency domain unit, b second frequency domain units, and c third frequency domain units to perform sideline transmission;

Occupied channel bandwidth OCB requirements;

Greater than or equal to 80% of the channel bandwidth.

In one embodiment, A=1, C=1.

OCB demand;

Greater than or equal to 80% of the channel bandwidth.

In one implementation, the channel bandwidth is a nominal channel bandwidth, and the nominal channel bandwidth includes the bandwidth of the first resource block set and/or the bandwidth of the first channel, or the nominal channel bandwidth is 20 MHz.

The frequency domain starting position of the first resource block set;

The frequency domain starting position of the first channel;

The frequency domain starting position of the resource pool.

The frequency domain end position of the first resource block set;

The frequency domain end position of the first channel;

The frequency domain end position of the resource pool.

In one implementation, the first frequency domain range and the second frequency domain range are continuous or discontinuous.

In one implementation, the second frequency domain range and the third frequency domain range are continuous or discontinuous.

In one implementation, the first frequency domain range and the third frequency domain range are determined based on the sidelink bandwidth part BWP configuration information, and the second frequency domain range is determined based on the resource pool configuration information.

In one implementation, the first frequency domain range, the second frequency domain range and the third frequency domain range are determined based on resource pool configuration information.

In one implementation, the first frequency domain ranges of different resource pool configurations completely overlap, partially overlap, or do not overlap.

In one implementation, the third frequency domain ranges of different resource pool configurations completely overlap, partially overlap, or do not overlap.

In one embodiment, in the case where the sidelink BWP or resource pool includes a plurality of first resource block sets and/or a plurality of first channels, the plurality of first resource block sets and/or the plurality of first channels The first frequency domain ranges in the channels have the same size and/or range, and the plurality of first resource block sets and/or the third frequency domain ranges in the plurality of first channels have the same size and/or range.

In one implementation, the side channel to be transmitted is mapped on the b second frequency domain units, the first data is mapped on the a first frequency domain units, and the c third frequency domain units are mapped Map second data.

In one implementation, the sidelink channel to be transmitted is at least one of the following: physical sidelink shared channel PSSCH, physical sidelink control channel PSCCH, physical sidelink feedback channel PSFCH, and sidelink synchronization signal block S-SSB.

In one embodiment, when the sidelink channel to be transmitted is a PSFCH, the transmission resource of the PSFCH is determined according to an index corresponding to the subchannel occupied by the PSSCH corresponding to the PSFCH in the second frequency domain. .

In one implementation, when the sidelink channel to be transmitted is the PSFCH, the transmission resources of the PSFCH include a physical resource block PRB in the second frequency domain range, a physical resource block PRB in the first frequency domain range PRBs and c PRBs within the third frequency domain range.

In one implementation, when the sidelink channel to be transmitted is PSSCH, PSCCH or S-SSB, the sidelink subcarrier spacing is 60 kHz.

In one implementation, the first channel is determined based on the PRB corresponding to the channel access process, or the first channel is determined based on the frequency domain range of the channel access process or the listen-before-talk LBT process.

In one implementation, as shown in Figure 15, the terminal device 1500 further includes:

The acquisition unit 1501 is configured to acquire first configuration information. The first configuration information is used to configure a guard frequency band. The frequency domain starting position and frequency domain ending position of the first resource block set are determined based on the first configuration information.

In one implementation, the first frequency domain unit includes PRBs or sub-channels, the second frequency domain unit includes PRBs or sub-channels, and the third frequency domain unit includes PRBs or sub-channels, wherein one sub-channel The channel includes multiple PRBs that are continuous in the frequency domain.

The terminal devices 1400 and 1500 in the embodiment of the present application can implement the corresponding functions of the terminal devices in the

foregoing method

1200 and 1300 embodiments. For the corresponding processes, functions, implementation methods and beneficial effects of each module (sub-module, unit or component, etc.) in the terminal equipment 1400, 1500, please refer to the corresponding description in the above method embodiment, and will not be described again here. It should be noted that the functions described for each module (sub-module, unit or component, etc.) in the terminal devices 1400 and 1500 of the application embodiment can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by Implemented by the same module (submodule, unit or component, etc.).

In a specific example: an RB set or a channel may include a first frequency domain range, a second frequency domain range, and a third frequency domain range. Among them, the first frequency domain range includes A frequency domain units, the third frequency domain range includes C frequency domain units, and the second frequency domain range includes B frequency domain units. A, B, and C are integers greater than or equal to 1. . Among them, the bandwidth of a channel or an RB set can be a 20MHz bandwidth, or it can be a frequency domain granularity for channel access or LBT.

The above-mentioned frequency domain unit may include PRBs or sub-channels, where one sub-channel may include multiple consecutive PRBs in the frequency domain.

The value of at least one of A, B, and C is determined based on protocol predefinition, preconfiguration information, or network configuration information; preferably, A=1; C=1.

Optionally, there is no overlap between the first frequency domain range and the second frequency domain range, and there is no overlap between the second frequency domain range and the third frequency domain range.

Optionally, the frequency domain starting position of the first frequency domain range is determined according to the frequency domain starting position of the RB set/channel, or based on the frequency domain starting position of the resource pool; the frequency domain end position of the third frequency domain range is determined It is determined based on the frequency domain end position of the RB set/channel, or based on the frequency domain end position of the resource pool.

For example, if the resource pool includes 2 RB sets, for each RB set, the frequency domain starting position of the first frequency domain range is the same as the frequency domain starting position of the RB set; the frequency domain ending position of the third frequency domain range The same as the frequency domain end position of the RB set.

Optionally, the first frequency domain range and the second frequency domain range may be continuous or discontinuous.

Optionally, the second frequency domain range and the third frequency domain range may be continuous or discontinuous.

For example, as shown in Figure 16, the system includes an RB set, which includes a first frequency domain range, a second frequency domain range, and a third frequency domain range. The starting position of the first frequency domain range is the same as the frequency domain starting position of the RB set; the end position of the third frequency domain range is the same as the frequency domain end position of the RB set.

For another example, as shown in Figure 17, the system includes two RB sets, and a protection frequency band is configured between the two RB sets. Each RB set includes the first frequency domain range, the second frequency domain range, and the third frequency domain. scope. In the first RB set (i.e. RB set 0): the starting position of the first frequency domain range is the same as the frequency domain starting position of the RB set; the end position of the third frequency domain range is based on the frequency domain end position of the RB set Determine, or determine based on the frequency domain starting position of the protection band. In Figure 17, the end position of the third frequency domain range is the same as the frequency domain end position of the RB set, or adjacent to the frequency domain starting position of the protection frequency band. In the second RB set (i.e. RB set 1): the starting position of the first frequency domain range is determined based on the frequency domain starting position of the RB set, or based on the end position of the protection band. In Figure 17, the starting position of the first frequency domain range is the same as the frequency domain starting position of the RB set, or adjacent to the frequency domain end position of the protection band; the end position of the third frequency domain range is based on the frequency domain of the RB set The end position is determined.

Optionally, the first frequency domain range, the second frequency domain range and the third frequency domain range are determined according to the resource pool configuration information or sideline BWP configuration information.

Optionally, the first frequency domain ranges of different resource pool configurations may completely or partially overlap, or may not overlap.

Optionally, the third frequency domain ranges of different resource pool configurations may completely or partially overlap, or may not overlap.

As shown in Figure 18, two resource pools are configured, and each resource pool has a corresponding first frequency domain range, second frequency domain range, and third frequency domain range. The first frequency domain ranges of the two resource pools do not overlap, the second frequency domain ranges do not overlap, and the third frequency domain ranges do not overlap.

As shown in Figure 19, two resource pools are configured. The two resource pools are configured with the same first frequency domain range and the same third frequency domain range. The second frequency domain ranges of the two resource pools are different.

Optionally, the first frequency domain range includes the first PRB, the third frequency domain range includes the second PRB, and the frequency domain interval between the first PRB and the second PRB meets the regulatory requirements of OCB, or is greater than or equal to 80 % nominal channel bandwidth. Among them, the nominal channel bandwidth corresponds to the bandwidth of the RB set or the bandwidth of the channel.

Optionally, if the sideline BWP or resource pool includes multiple RB sets, the size or range of the first frequency domain range in the multiple RB sets is the same, and the size or range of the third frequency domain range is the same.

Optionally, if the first terminal wants to transmit the first side channel, the first terminal determines b frequency domain units in the second frequency domain range, and the first terminal determines a PRBs in the first frequency domain range, Determine c PRBs in the third frequency domain. The first terminal can perform sideline transmission in a PRB, b frequency domain units and c PRBs at the same time. Among them, 1≤a≤A; 1≤b≤B; 1≤c≤C, a, b, c are positive integers.

Optionally, the terminal randomly selects a PRB within the first frequency domain range, or selects a PRB with the lowest position in the frequency domain, or selects a PRB with the highest position in the frequency domain.

Optionally, the terminal randomly selects c PRBs in the third frequency domain, or selects the c PRBs with the lowest positions in the frequency domain, or selects the c PRBs with the highest positions in the frequency domain.

Optionally, all terminals select the same a number of PRBs in the first frequency domain range; and select the same c number of PRBs in the third frequency domain range. For example, the configuration information is included in the resource pool configuration information or sideline BWP configuration information. The configuration information configures the first frequency domain range to include 1 PRB, and the third frequency domain range to include 1 PRB. All terminals select the PRB in the first frequency domain, that is, all terminals select the same PRB in the first frequency domain; all terminals select the PRB in the third frequency domain, that is, all terminals select the PRB in the third frequency domain. Same PRB.

Optionally, if the channels to be transmitted by the terminal are PSSCH and PSCCH, map the PSSCH and PSCCH on the b frequency domain units, map the first data on the a PRBs, and map the second data on the c PRBs. The first data and/or the second data are data generated based on redundant bits and stuffing bits, or are partial repetitions of the PSCCH/PSSCH mapped on the b frequency domain units. The first data and the second data may be the same or different.

Optionally, if the channel to be transmitted by the terminal is PSFCH, b PRBs are selected in the second frequency domain range to map the PSFCH, for example, b=1; a PRBs are selected in the first frequency domain range, and the a PRBs are selected in the first frequency domain range. PRB maps the first data; selects c PRBs in the third frequency domain range, and maps the second data to the c PRBs. The first data and/or the second data are data generated based on redundant bits and padding bits, or are partial or full repetitions of the PSFCH mapped on the b PRBs. The first data and the second data may be the same or different. The PSFCH transmission resources in the second frequency domain can be determined based on the index corresponding to the subchannel occupied by the PSSCH associated with the PSFCH in the second frequency domain (such as the index of the first subchannel), rather than based on the first subchannel. The resources within the first frequency domain range or the third frequency domain range are determined.

For example, as shown in Figure 20, the subcarrier spacing is 15kHz. For an RB set, the first frequency domain range includes A = 1 PRB, which is recorded as the first PRB. This PRB is located in the first PRB of the RB set (frequency domain PRB with the lowest position). The third frequency domain range includes C=1 PRB, which is recorded as the second PRB. This PRB is located in the last PRB of the RB set (the PRB with the highest frequency domain position). The second frequency domain range includes B=10 sub-channels, indexed from 0 to 9, and each sub-channel includes 10 PRBs. The channel to be transmitted by the terminal is PSCCH and/or PSSCH. The terminal selects 2 sub-channels (that is, b=2) in the second frequency domain, and the corresponding sub-channel indexes are 2 and 3, for carrying PSCCH and/or PSSCH. Specifically, the multiplexing method of PSCCH and/or PSSCH can adopt the method of Figure 8a. Further, the terminal selects a first PRB included in the first frequency domain range and a second PRB included in the third frequency domain range, and the frequency domain ranges of these two PRBs exceed 80% of the channel bandwidth. The data on the first PRB may be a copy of the data carried by any one of the two sub-channels occupied by the PSSCH. The data on the second PRB may be a copy of the data carried by any one of the two sub-channels occupied by the PSSCH. The terminal uses the first PRB, the second PRB and the two selected sub-channels to perform sidelink transmission.

In the embodiment of the present application, for PSSCH transmission, since the transmission is performed simultaneously on resources in the first frequency domain range and the third frequency domain range, the requirements of OCB can be met. In addition, the method of configuring sub-channels for transmitting PSSCH in the second frequency domain and the multiplexing method between PSCCH/PSSCH can follow the methods in the NR SL system, which can be reused as much as possible while meeting OCB requirements. Mechanisms related to NR SL systems.

Optionally, if the channel to be transmitted by the terminal is PSFCH and the second frequency domain unit is PRB, the terminal determines a PRB in the second frequency domain range for transmitting PSFCH, selects a PRB in the first frequency domain range, and Select c PRBs within the three frequency domains. Wherein, the a PRBs map the first data, and the c PRBs map the second data. The first data and/or the second data are data generated based on redundant bits and padding bits, or are data repetitions of PRBs carrying the PSFCH.

For example, as shown in Figure 21, 2 sub-channels are configured in an RB set, and the PSFCH cycle is 4 time slots. PSFCH transmission resources are included in time slot 3 and time slot 7. The first frequency domain range is configured to include one PRB, which is recorded as the first PRB; the third frequency domain range is configured to include one PRB, which is recorded as the second PRB; the second The frequency domain range includes multiple PRBs for transmitting PSFCH. If the TX UE (sending terminal) uses subchannel 0 of time slot 0 to send the first PSCCH/PSSCH to the RX UE (receiving terminal), the RX UE determines the first PSFCH transmission resource in the second frequency domain range of time slot 3. Moreover, the RX UE uses the first PRB and the second PRB to perform sidelink transmission. The RX UE may repeatedly map the data carried on the first PSFCH to the first PRB and the second PRB. Moreover, the RX UE simultaneously uses the transmission resources of the first PRB, the second PRB, and the first PSFCH to perform sidelink transmission. If the TX UE uses subchannel 1 of time slot 2 to send the second PSCCH/PSSCH to the RX UE, the RX UE determines the second PSFCH transmission resource in the second frequency domain of time slot 7. Moreover, the RX UE uses the first PRB and the second PRB for sidelink transmission, and the RX UE can repeatedly map the data carried on the second PSFCH to the first PRB and the second PRB. Moreover, the RX UE simultaneously uses the transmission resources of the first PRB, the second PRB, and the second PSFCH to perform sidelink transmission.

In this embodiment of the present application, for PSFCH transmission, OCB requirements can be met by simultaneously transmitting resources in the first frequency domain range and the third frequency domain range. In addition, the configuration of PSFCH resources in the second frequency domain and the mapping relationship between PSSCH and PSFCH resources can continue to use the mapping relationship in the NR SL system, which can reuse the relevant PSFCH mechanism as much as possible while meeting OCB requirements. .

The method in the embodiment of the present application is also applicable to S-SSB transmission. When the terminal wants to transmit S-SSB, it selects a PRB in the first frequency domain range and c PRBs in the third frequency domain range. The frequency domain range of S-SSB is located in the second frequency domain range. The terminal simultaneously Transmit a PRB, c PRB and S-SSB. Among them, the data in a PRB and c PRBs may be partial repetitions of S-SSB data.

In the embodiment of this application, a common first frequency domain range and a third frequency domain range are set in the channel or RB set, and the OCB requirements are met through the frequency domain spacing of the resources in the first frequency domain range and the third frequency domain range. The terminal that performs sidelink transmission selects resources in the second frequency domain and simultaneously uses resources in the first frequency domain and the third frequency domain for transmission, which can meet the needs of OCB. And the method for determining transmission resources in the second frequency domain can continue to use the method in NR SL, which has backward compatibility.

Figure 22 is a schematic structural diagram of a terminal device 2200 according to an embodiment of the present application. The terminal device 2200 includes a processor 2210, and the processor 2210 can call and run a computer program from the memory, so that the terminal device 2200 implements the method in the embodiment of the present application.

In one implementation, the terminal device 2200 may further include a memory 2220. The processor 2210 can call and run the computer program from the memory 2220, so that the terminal device 2200 implements the method in the embodiment of the present application.

The memory 2220 may be a separate device independent of the processor 2210, or may be integrated into the processor 2210.

In one implementation, the terminal device 2200 may also include a transceiver 2230, and the processor 2210 may control the transceiver 2230 to communicate with other devices. Specifically, the terminal device 2200 may send information or data to other devices, or receive information sent by other devices. information or data.

Among them, the transceiver 2230 may include a transmitter and a receiver. The transceiver 2230 may further include an antenna, and the number of antennas may be one or more.

In one implementation, the terminal device 2200 can be the terminal device of the embodiment of the present application, and the terminal device 2200 can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, this is not mentioned here. Again.

Figure 23 is a schematic structural diagram of a chip 2300 according to an embodiment of the present application. The chip 2300 includes a processor 2310, and the processor 2310 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

In one implementation, chip 2300 may also include memory 2320. The processor 2310 can call and run the computer program from the memory 2320 to implement the method executed by the terminal device in the embodiment of the present application.

The memory 2320 may be a separate device independent of the processor 2310, or may be integrated into the processor 2310.

In one implementation, the chip 2300 may also include an input interface 2330. The processor 2310 can control the input interface 2330 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

In one implementation, the chip 2300 may also include an output interface 2340. The processor 2310 can control the output interface 2340 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

In one implementation, the chip can be applied to the terminal device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, details will not be repeated here. .

It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.

The processor mentioned above can be a general-purpose processor, a digital signal processor (DSP), an off-the-shelf programmable gate array (FPGA), an application specific integrated circuit (ASIC), or Other programmable logic devices, transistor logic devices, discrete hardware components, etc. The above-mentioned general processor may be a microprocessor or any conventional processor.

The memory mentioned above may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM).

It should be understood that the above memory is an exemplary but not restrictive description. For example, the memory in the embodiment of the present application can also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, memories in embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

Figure 24 is a schematic block diagram of a communication system 2400 according to an embodiment of the present application. The communication system 2400 includes a first terminal 2410 and a second terminal 2420.

The first terminal 2410 is used to perform the method performed by the sending terminal in any of the above method embodiments;

The second terminal 2420 is used to perform the method performed by the receiving terminal in any of the above method embodiments;

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted over a wired connection from a website, computer, server, or data center (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means to transmit to another website, computer, server or data center. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), etc.

It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present application. are covered by the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A side communication method, including:

The terminal equipment uses a first frequency domain unit, b second frequency domain units, and c third frequency domain units to perform sideline transmission;

Wherein, the a first frequency domain units are selected from the first frequency domain range, the b second frequency domain units are selected from the second frequency domain range, and the c third frequency domain units are selected from the second frequency domain range. The unit is selected from the third frequency domain range, the first frequency domain range, the second frequency domain range and the third frequency domain range are located in the first resource block set or the first channel, a, b and c are positive integers.
The method according to claim 1, wherein the maximum frequency domain interval between the a first frequency domain units and the c third frequency domain units satisfies at least one of the following:

Occupied channel bandwidth OCB requirements;

Greater than or equal to 80% of the channel bandwidth.
The method according to claim 1 or 2, wherein the first frequency domain range includes A first frequency domain units, the third frequency domain range includes C third frequency domain units, and the second frequency domain range includes C third frequency domain units. The domain range includes B second frequency domain units, where A, B and C are positive integers, a is less than or equal to A, b is less than or equal to B, and c is less than or equal to C.
The method according to claim 3, wherein the value of at least one of A, B and C is determined based on protocol predefinition, preconfiguration information or network configuration information.
The method according to claim 3 or 4, wherein A=1 and C=1.
The method according to any one of claims 1 to 5, wherein between at least one first frequency domain unit in the first frequency domain range and at least one third frequency domain unit in the third frequency domain range The frequency domain spacing between them satisfies at least one of the following:

OCB demand;

Greater than or equal to 80% of the channel bandwidth.
The method according to claim 2 or 6, wherein the channel bandwidth is a nominal channel bandwidth, the nominal channel bandwidth includes the bandwidth of the first resource block set and/or the bandwidth of the first channel, or the The nominal channel bandwidth is 20MHz.
The method according to any one of claims 1 to 7, wherein the frequency domain starting position of the first frequency domain range is determined according to at least one of the following:

The frequency domain starting position of the first resource block set;

The frequency domain starting position of the first channel;

The frequency domain starting position of the resource pool.
The method according to any one of claims 1 to 8, wherein the frequency domain end position of the third frequency domain range is determined according to at least one of the following:

The frequency domain end position of the first resource block set;

The frequency domain end position of the first channel;

The frequency domain end position of the resource pool.
The method according to any one of claims 1 to 9, wherein the first frequency domain range and the second frequency domain range are continuous or discontinuous.
The method according to any one of claims 1 to 10, wherein the second frequency domain range and the third frequency domain range are continuous or discontinuous.
The method according to any one of claims 1 to 11, wherein the first frequency domain range and the third frequency domain range are determined according to the sidelink bandwidth part BWP configuration information, and the second frequency domain range The scope is determined based on the resource pool configuration information.
The method according to any one of claims 1 to 11, wherein the first frequency domain range, the second frequency domain range and the third frequency domain range are determined according to resource pool configuration information.
The method according to claim 13, wherein the first frequency domain ranges of different resource pool configurations completely overlap, partially overlap, or do not overlap.
The method according to claim 13 or 14, wherein the third frequency domain ranges of different resource pool configurations completely overlap, partially overlap, or do not overlap.
The method according to any one of claims 1 to 15, wherein in the case where the sideline BWP or resource pool includes a plurality of first resource block sets and/or a plurality of first channels, the plurality of first resource block sets are The size and/or range of the resource block set and/or the first frequency domain range in the plurality of first channels are the same, and the plurality of first resource block sets and/or the first frequency domain range in the plurality of first channels are the same. The three frequency domain ranges are the same size and/or range.
The method according to any one of claims 1 to 16, wherein the determination method of the a first frequency domain unit includes at least one of the following:

a first frequency domain unit randomly selected within the first frequency domain range;

Select a first frequency domain unit with the lowest frequency domain position within the first frequency domain range;

Select a first frequency domain unit with the highest frequency domain position within the first frequency domain range.
The method according to any one of claims 1 to 17, wherein the determination method of the c third frequency domain units includes at least one of the following:

c third frequency domain units randomly selected within the third frequency domain range;

Select c third frequency domain units with the lowest frequency domain positions within the third frequency domain range;

Select c third frequency domain units with the highest frequency domain positions within the third frequency domain range.
The method according to any one of claims 1 to 18, wherein the sidelink channels to be transmitted are mapped on the b second frequency domain units, and the first frequency domain units are mapped on the a first frequency domain units. data, mapping the second data on the c third frequency domain units.
The method of claim 19, wherein the first data is data generated based on redundant bits, stuffing bits, or determined based on data mapped on the b second frequency domain units;

The second data is determined based on data generated by redundant bits, stuffing bits, or data mapped on the b second frequency domain units.
The method according to claim 19 or 20, wherein the sidelink channel to be transmitted is at least one of the following: physical sidelink shared channel PSSCH, physical sidelink control channel PSCCH, physical sidelink feedback channel PSFCH and sidelink Synchronization signal block S-SSB.
The method according to claim 21, wherein when the sidelink channel to be transmitted is PSFCH, the transmission resources of the PSFCH are occupied in the second frequency domain according to the PSSCH corresponding to the PSFCH. The index corresponding to the sub-channel is determined.
The method according to claim 21, wherein when the sidelink channel to be transmitted is a PSFCH, the transmission resources of the PSFCH include a physical resource block PRB in the second frequency domain range, the a PRB within the first frequency domain range and c PRBs within the third frequency domain range.
The method according to claim 21, wherein when the sidelink channel to be transmitted is PSSCH, PSCCH or S-SSB, the sidelink subcarrier spacing is 60 kHz.
The method according to any one of claims 1 to 24, wherein the first channel is determined according to a PRB corresponding to a channel access process, or the first channel is determined according to a channel access process or a listen-before-talk LBT process. The frequency domain range is determined.
The method according to any one of claims 1 to 25, wherein the first set of resource blocks is located in the first channel.
The method of claim 26, further comprising:

The terminal device obtains first configuration information, the first configuration information is used to configure a protection frequency band, and the frequency domain starting position and frequency domain ending position of the first resource block set are determined based on the first configuration information.
The method according to any one of claims 1 to 27, wherein the first frequency domain unit includes a PRB or a sub-channel, the second frequency domain unit includes a PRB or a sub-channel, and the third frequency domain unit includes PRB or sub-channel, where a sub-channel includes multiple PRBs consecutive in the frequency domain.
A terminal device including:

A communication unit, used for utilizing a first frequency domain unit, b second frequency domain units, and c third frequency domain units for sideline transmission;

Wherein, the a first frequency domain units are selected from the first frequency domain range, the b second frequency domain units are selected from the second frequency domain range, and the c third frequency domain units are selected from the second frequency domain range. The unit is selected from the third frequency domain range, the first frequency domain range, the second frequency domain range and the third frequency domain range are located in the first resource block set or the first channel, a, b and c are positive integers.
The terminal device according to claim 29, wherein the maximum frequency domain interval between the a first frequency domain units and the c third frequency domain units satisfies at least one of the following:

Occupied channel bandwidth (OCB) requirements;

Greater than or equal to 80% of the channel bandwidth.
The terminal device according to claim 29 or 30, wherein the first frequency domain range includes A first frequency domain units, the third frequency domain range includes C third frequency domain units, and the second frequency domain range includes C third frequency domain units. The frequency domain range includes B second frequency domain units, where A, B and C are positive integers, a is less than or equal to A, b is less than or equal to B, and c is less than or equal to C.
The terminal device according to claim 31, wherein the value of at least one of A, B and C is determined based on protocol predefinition, preconfiguration information or network configuration information.
The terminal device according to claim 31 or 32, wherein A=1 and C=1.
The terminal device according to any one of claims 29 to 33, wherein at least one first frequency domain unit in the first frequency domain range and at least one third frequency domain unit in the third frequency domain range The frequency domain spacing between them satisfies at least one of the following:

OCB demand;

Greater than or equal to 80% of the channel bandwidth.
The terminal device according to claim 30 or 34, wherein the channel bandwidth is a nominal channel bandwidth, the nominal channel bandwidth includes the bandwidth of the first resource block set and/or the bandwidth of the first channel, or The nominal channel bandwidth is 20MHz.
The terminal device according to any one of claims 29 to 35, wherein the frequency domain starting position of the first frequency domain range is determined according to at least one of the following:

The frequency domain starting position of the first resource block set;

The frequency domain starting position of the first channel;

The frequency domain starting position of the resource pool.
The terminal device according to any one of claims 29 to 36, wherein the frequency domain end position of the third frequency domain range is determined based on at least one of the following:

The frequency domain end position of the first resource block set;

The frequency domain end position of the first channel;

The frequency domain end position of the resource pool.
The terminal device according to any one of claims 29 to 37, wherein the first frequency domain range and the second frequency domain range are continuous or discontinuous.
The terminal device according to any one of claims 29 to 38, wherein the second frequency domain range and the third frequency domain range are continuous or discontinuous.
The terminal device according to any one of claims 29 to 39, wherein the first frequency domain range and the third frequency domain range are determined according to sideline bandwidth part BWP configuration information, and the second frequency domain range The domain scope is determined based on the resource pool configuration information.
The terminal device according to any one of claims 29 to 39, wherein the first frequency domain range, the second frequency domain range and the third frequency domain range are determined according to resource pool configuration information.
The terminal device according to claim 41, wherein the first frequency domain ranges of different resource pool configurations completely overlap, partially overlap, or do not overlap.
The terminal device according to claim 41 or 42, wherein the third frequency domain ranges of different resource pool configurations completely overlap, partially overlap, or do not overlap.
The terminal device according to any one of claims 29 to 43, wherein in the case where the sideline BWP or the resource pool includes a plurality of first resource block sets and/or a plurality of first channels, the plurality of first resource block sets and/or a plurality of first channels. A resource block set and/or the first frequency domain ranges in the plurality of first channels have the same size and/or range, and the plurality of first resource block sets and/or the plurality of first channels The third frequency domain range has the same size and/or range.
The terminal device according to any one of claims 29 to 44, wherein the determination method of the a first frequency domain unit includes at least one of the following:

a first frequency domain unit randomly selected within the first frequency domain range;

Select a first frequency domain unit with the lowest frequency domain position within the first frequency domain range;

Select a first frequency domain unit with the highest frequency domain position within the first frequency domain range.
The terminal device according to any one of claims 29 to 45, wherein the determination method of the c third frequency domain units includes at least one of the following:

c third frequency domain units randomly selected within the third frequency domain range;

Select c third frequency domain units with the lowest frequency domain positions within the third frequency domain range;

Select c third frequency domain units with the highest frequency domain positions within the third frequency domain range.
The terminal device according to any one of claims 29 to 46, wherein the sidelink channel to be transmitted is mapped on the b second frequency domain units, and the ath first frequency domain unit is mapped on One data, mapping the second data on the c third frequency domain units.
The terminal device according to claim 47, wherein the first data is data generated based on redundant bits, stuffing bits, or determined based on data mapped on the b second frequency domain units;

The second data is determined based on data generated by redundant bits, stuffing bits, or data mapped on the b second frequency domain units.
The terminal device according to claim 47 or 48, wherein the sidelink channel to be transmitted is at least one of the following: physical sidelink shared channel PSSCH, physical sidelink control channel PSCCH, physical sidelink feedback channel PSFCH and sidelink Horizontal synchronization signal block S-SSB.
The terminal equipment according to claim 49, wherein when the side channel to be transmitted is PSFCH, the transmission resource of the PSFCH is within the second frequency domain according to the PSSCH corresponding to the PSFCH. The index corresponding to the occupied sub-channel is determined.
The terminal equipment according to claim 49, wherein when the side channel to be transmitted is a PSFCH, the transmission resource of the PSFCH includes a physical resource block PRB in the second frequency domain range, the a PRB within the first frequency domain range and c PRBs within the third frequency domain range.
The terminal equipment according to claim 49, wherein when the sidelink channel to be transmitted is PSSCH, PSCCH or S-SSB, the sidelink subcarrier spacing is 60 kHz.
The terminal device according to any one of claims 29 to 52, wherein the first channel is determined according to a PRB corresponding to a channel access process, or the first channel is determined according to a channel access process or listen-before-talk LBT. The frequency domain range of the process is determined.
The terminal device according to any one of claims 29 to 53, wherein the first set of resource blocks is located in the first channel.
The terminal device according to claim 54, further comprising:

An acquisition unit is configured to acquire first configuration information, where the first configuration information is used to configure a guard frequency band, and a frequency domain starting position and a frequency domain ending position of the first resource block set are determined based on the first configuration information.
The terminal device according to any one of claims 29 to 55, wherein the first frequency domain unit includes a PRB or a sub-channel, the second frequency domain unit includes a PRB or a sub-channel, and the third frequency domain unit Including PRBs or sub-channels, where one sub-channel includes multiple PRBs continuous in the frequency domain.
A terminal device, including: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, so that the terminal device executes claims 1 to 28 any one of the methods.
A chip includes: a processor for calling and running a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 28.
A computer-readable storage medium used to store a computer program, which when the computer program is run by a device, causes the device to perform the method according to any one of claims 1 to 28.
A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method according to any one of claims 1 to 28.
A computer program causing a computer to perform the method according to any one of claims 1 to 28.