Auxiliary link transmission method and device for unlicensed spectrum, and computer-readable storage medium

Abstract

A method and device for auxiliary link transmission of unlicensed spectrum, and a computer-readable storage medium, the method comprising: determining a mappable position of a second SCI on an auxiliary link resource, wherein the auxiliary link resource is allocated in an interleaved manner; mapping the second SCI to the mappable position in an order of interleaved priority and / or frequency domain priority; and transmitting the second SCI using the auxiliary link resource. The scheme of the present invention can redesign the channel of the auxiliary link in an interleaved manner, thereby performing auxiliary link transmission on the unlicensed spectrum.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a method and device for auxiliary link transmission of unlicensed spectrum, and a computer-readable storage medium. Background Art

[0002] The existing sidelink transmission, whether it is the fourth-generation mobile communications technology (4G) or 5G, still works on the licensed spectrum. Future protocols will extend the sidelink transmission to the unlicensed spectrum (i.e., unlicensed spectrum, unlicensed frequency band). In the research of the air interface working in the unlicensed frequency band (New Radio in Unlicensed Spectrum, NR-U for short), in order to meet the requirements of occupied channel bandwidth (OCB for short), the concept of interlace is introduced.

[0003] Interlace means that resources are allocated in units of several discrete resource blocks (RBs). One interlace contains several discrete resource blocks. A channel or reference signal (RS) can occupy one or more interlaces.

[0004] In principle, the channels of the auxiliary link should also be redesigned in an interleaved manner, otherwise it will be detrimental to the auxiliary link transmission on the unlicensed spectrum. Summary of the invention

[0005] The technical problem solved by the present invention is how to perform auxiliary link transmission on an unlicensed spectrum.

[0006] To solve the above technical problems, an embodiment of the present invention provides an auxiliary link transmission method for unlicensed spectrum, including: determining a mappable position of a second SCI on an auxiliary link resource, wherein the auxiliary link resource is allocated in an interlaced manner; mapping the second SCI to the mappable position in an order of interlaced priority and / or frequency domain priority; and transmitting the second SCI using the auxiliary link resource.

[0007] Optionally, determining the mappable position of the second SCI on the auxiliary link resource includes: determining a resource element to which DMRS is not mapped in a symbol of the first DMRS of the PSSCH mapped on the auxiliary link resource as the mappable position.

[0008] Optionally, mapping the second SCI to the mappable position in the order of interleaving priority and frequency domain priority includes: when the mappable position covers n symbols, the first n-1 symbols are mapped in the order of frequency domain priority, and the nth symbol is mapped in the order of interleaving priority, where n≥2.

[0009] Optionally, mapping the second SCI to the mappable position in the order of interleaving priority includes: mapping the second SCI to the mappable position in the order of interleaving index numbers from high to low or from low to high, wherein mapping is performed in the frequency domain from low to high or from high to low within a single interleaving.

[0010] Optionally, mapping the second SCI to the mappable position in the order of frequency domain priority includes: mapping the second SCI to the mappable position in the order of frequency domain from low to high or from high to low.

[0011] Optionally, the auxiliary link resources are allocated in an interleaved manner, including: the auxiliary link resources are mapped with a lowest interleaved index number of the PSCCH and the lowest interleaved index number of the PSSCH being consistent.

[0012] Optionally, the method further includes: sending reserved resource indication information, wherein the resource allocation result included in the reserved resource indication information is calculated based on the following formula: Among them, X is the resource allocation result; N interlace is the total number of interleavings.

[0013] To solve the above technical problems, an embodiment of the present invention also provides an auxiliary link transmission device for unlicensed spectrum, including: a determination module, used to determine a mappable position of a second SCI on an auxiliary link resource, wherein the auxiliary link resource is allocated in an interlaced manner; a mapping module, used to map the second SCI to the mappable position in an order of interlaced priority and / or frequency domain priority; and a transmission module, used to transmit the second SCI using the auxiliary link resource.

[0014] To solve the above technical problems, an embodiment of the present invention further provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transient storage medium, on which a computer program is stored, and when the computer program is run by a processor, the steps of the above method are executed.

[0015] To solve the above technical problems, an embodiment of the present invention further provides an auxiliary link transmission device for unlicensed spectrum, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the steps of the above method when running the computer program.

[0016] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0017] An embodiment of the present invention provides an auxiliary link transmission method for an unlicensed spectrum, comprising: determining a mappable position of a second SCI on an auxiliary link resource, wherein the auxiliary link resource is allocated in an interlaced manner; mapping the second SCI to the mappable position in the order of interlaced priority and / or frequency domain priority; and using the auxiliary link resource to transmit the second SCI. Thus, the channel of the auxiliary link can be redesigned in an interlaced manner, thereby performing auxiliary link transmission on the unlicensed spectrum. Specifically, the auxiliary link resources are allocated in an interlaced manner. Further, the second SCI is mapped to a mappable position on the auxiliary link resource in the order of interlaced priority and / or frequency domain priority, thereby achieving interlaced-based second SCI resource mapping. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a flow chart of an auxiliary link transmission method of an unlicensed spectrum according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of auxiliary link resource mapping for the first typical application scenario of an embodiment of the present invention;

[0020] Figure 3 is a schematic diagram of auxiliary link resource mapping in a second typical application scenario of an embodiment of the present invention;

[0021] Figure 4 It is a structural schematic diagram of an auxiliary link transmission device of an unlicensed spectrum according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] As mentioned in the background art, the channels of the auxiliary link should also be redesigned in an interleaved manner in principle, otherwise it is not conducive to implementing auxiliary link transmission on the unlicensed spectrum.

[0023] To solve the above technical problems, an embodiment of the present invention provides an auxiliary link transmission method for unlicensed spectrum, including: determining a mappable position of a second SCI on an auxiliary link resource, wherein the auxiliary link resource is allocated in an interlaced manner; mapping the second SCI to the mappable position in an order of interlaced priority and / or frequency domain priority; and transmitting the second SCI using the auxiliary link resource.

[0024] Thus, the channel of the auxiliary link can be redesigned in an interleaved manner, so that the auxiliary link transmission is performed on the unlicensed spectrum. Specifically, the auxiliary link resources are allocated in an interleaved manner. Further, the second SCI is mapped to a mappable position on the auxiliary link resource in the order of interleaved priority and / or frequency domain priority, thereby realizing interleaved second SCI resource mapping.

[0025] In order to make the above-mentioned objects, features and beneficial effects of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] Figure 1 The present invention is a flowchart of an auxiliary link transmission method of an unlicensed spectrum according to an embodiment of the present invention.

[0027] Specifically, the auxiliary link can connect a transmitter (Transmitter, referred to as Tx) and a receiver (Receiver, referred to as Rx). Alternatively, the auxiliary link can also be connected to a base station (gNB), and the base station sends information to the receiver through the transmitter.

[0028] This implementation can be executed by the receiving end, which can be a user equipment (UE). Specifically, this implementation can be executed by a chip with a resource mapping function in the user equipment, or by a baseband chip in the user equipment.

[0029] Furthermore, the auxiliary link is transmitted on an unlicensed spectrum.

[0030] Furthermore, the auxiliary link resources are allocated in an interlace manner, wherein an interlace resource may be identified by an interlace index number, and the RBs or REs included in an interlace resource may be discretely distributed in the frequency domain.

[0031] refer to Figure 1 The auxiliary link transmission method of the unlicensed spectrum described in this embodiment may include the following steps:

[0032] Step S101, determining a mappable position of a second SCI on an auxiliary link resource;

[0033] Step S102, mapping the second SCI to the mappable position in an order of interleaving priority and / or frequency domain priority;

[0034] Step S103: Use the auxiliary link resources to transmit the second SCI.

[0035] In a specific implementation, the step S101 may include the step of: determining, in the symbol of the first demodulation reference signal (DMRS) of the PSSCH mapped to the auxiliary link resource, a resource element to which the DMRS is not mapped as the mappable position.

[0036] In a specific implementation, the step S102 may include the step of mapping the second SCI to the mappable position in the order of interleaving index numbers from high to low or from low to high, wherein a single interleaving is mapped in the order of frequency domain from low to high or from high to low. Thus, a better diversity gain effect can be obtained.

[0037] Specifically, it can be mapped at an interlace level first (interlace index number from low to high, or interlace index number from high to low), and then within an interlace it is mapped from low to high or from high to low in the frequency domain, and after mapping one symbol, it is mapped to the next symbol.

[0038] For example, refer to Figure 2 First, the Physical Sidelink Control Channel (PSCCH) is mapped to the auxiliary link resources in the order of the interleaving index number from low to high, and then the DMRS of the Physical Sidelink Shared Channel (PSSCH) is mapped to the auxiliary link resources in the order of the interleaving index number from low to high.

[0039] Then, the resource elements not mapped with DMRS in the symbols mapped with DMRS are the mappable positions, and the second SCI is mapped to the mappable positions in the order of interleaving index numbers from low to high and frequency domains within a single interleaving from high to low (i.e., the numbering order shown in the figure). Figure 2 In the example, since the second SCI is mapped to the third ranked mappable position, the mapping is completed, and therefore the second SCI is not actually mapped to the 4th to 6th ranked mappable positions.

[0040] Finally, the remaining resource elements carry the PSSCH.

[0041] In a specific implementation, mapping the second SCI to the mappable position in the order of frequency domain priority includes: mapping the second SCI to the mappable position in the order of frequency domain from low to high or from high to low.

[0042] Specifically, the second SCI may be mapped to a mappable position in a mapping manner of first frequency domain and then time domain.

[0043] For example, refer to Figure 3 After mapping the DMRS of PSCCH and PSSCH to the auxiliary link resources, the mapping can be obtained by first mapping in the frequency domain and then in the time domain. Figure 3 The second SCI shown.

[0044] In a specific implementation, the step S102 may include the following steps: when the mappable position covers n symbols, the first n-1 symbols are mapped in a frequency domain priority order, and the nth symbol is mapped in an interleaving priority order, where n≥2.

[0045] That is, the second SCI may be mapped to multiple symbols. In this case, the mapping on the first n-1 symbols adopts Figure 3 The mapping method shown in the figure is implemented by first mapping in the frequency domain and then in the time domain. The mapping on the last symbol is implemented by Figure 2 The scattered mapping method shown is implemented.

[0046] The actions of mapping the second SCI to the auxiliary link resources in the above three steps S102 may be performed by the transmitting end.

[0047] In a specific implementation, allocating the auxiliary link resources in an interleaved manner may include: the auxiliary link resources mapped with the lowest interleaved index number of the PSCCH are consistent with the lowest interleaved index number mapped with the PSSCH; or, optionally, the PSCCH may be mapped on an interleaved resource, in which case the auxiliary link resources mapped with the interleaved index number of the PSCCH are consistent with the lowest interleaved index number mapped with the PSSCH.

[0048] That is, the lowest mapping position of PSCCH in the frequency domain is consistent with the lowest mapping position of PSSCH in the frequency domain. Figure 2 and Figure 3 The lowest interleaving index number mapped by PSCCH in the frequency domain and the lowest interleaving index number mapped by PSSCH in the frequency domain are both interleaving -0.

[0049] In a specific implementation, the method described in this embodiment may further include the step of sending reserved resource indication information, wherein the resource allocation result included in the reserved resource indication information is calculated based on the following formula:

[0050]

[0051] Among them, X is the resource allocation result; N interlace Optionally, after receiving the resource indication information X, the receiving end can infer the starting interleaving resource index number of the PSSCH and the total number of interleaving resources.

[0052] Specifically, the reserved resource indication information may be carried by downlink control information (Downlink Control Information, referred to as DCI) or sidelink control information (Sidelink Control Information, referred to as SCI) or PSCCH. Among them, SCI may include the above Figure 1 The illustrated embodiment sends a second SCI.

[0053] Furthermore, the reserved resource indication information may be transmitted by using auxiliary link resources allocated in an interleaved manner according to this implementation.

[0054] Furthermore, the reserved resource indication information may be used to indicate resource allocation results of the next first and second reserved PSCCH transmissions.

[0055] Furthermore, the reserved resource indication information may be sent out by the sending end in a broadcasting manner.

[0056] From the above, by adopting this implementation scheme, the channel of the auxiliary link can be redesigned in an interleaved manner, so as to perform auxiliary link transmission on the unlicensed spectrum. Specifically, the auxiliary link resources are allocated in an interleaved manner. Further, the second SCI is mapped to a mappable position on the auxiliary link resource in the order of interleaved priority and / or frequency domain priority, thereby realizing interleaved second SCI resource mapping.

[0057] Figure 4 4 is a schematic diagram of the structure of an auxiliary link transmission device of an unlicensed spectrum according to an embodiment of the present invention. A person skilled in the art will appreciate that the auxiliary link transmission device 4 of the unlicensed spectrum described in this embodiment can be used to implement the above Figures 1 to 3 The method and technical solution described in the embodiments.

[0058] Specifically, refer to Figure 4 The auxiliary link transmission device 4 of the unlicensed spectrum described in this embodiment may include: a determination module 41, used to determine a mappable position of the second SCI on the auxiliary link resources, wherein the auxiliary link resources are allocated in an interlaced manner; a mapping module 42, used to map the second SCI to the mappable position in the order of interlaced priority and / or frequency domain priority; a transmission module 43, used to transmit the second SCI using the auxiliary link resources.

[0059] For more information about the working principle and working method of the auxiliary link transmission device 4 of the unlicensed spectrum, please refer to the above Figures 1 to 3 The relevant description in will not be repeated here.

[0060] In a specific implementation, the auxiliary link transmission device 4 of the above-mentioned unlicensed spectrum can correspond to a processing chip with a resource mapping function in a user device; or correspond to a chip with a data processing function, such as a baseband chip; or correspond to a chip module in the user device including a resource mapping chip; or correspond to a chip module with a data processing function chip, or correspond to a user device.

[0061] In a specific implementation, each module / unit included in each device or product described in the above embodiments may be a software module / unit or a hardware module / unit, or may be partly a software module / unit and partly a hardware module / unit.

[0062] For example, for each device or product applied to or integrated in a chip, each module / unit contained therein may be implemented in the form of hardware such as circuits, or at least some of the modules / units may be implemented in the form of software programs, which run on a processor integrated inside the chip, and the remaining (if any) modules / units may be implemented in the form of hardware such as circuits; for each device or product applied to or integrated in a chip module, each module / unit contained therein may be implemented in the form of hardware such as circuits, and different modules / units may be located in the same component (such as a chip, circuit module, etc.) or different components of the chip module, or at least some of the modules / units may be implemented in the form of software programs. The element can be implemented in the form of a software program, which runs on a processor integrated inside the chip module, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated in the terminal, the various modules / units contained therein can be implemented in the form of hardware such as circuits, and different modules / units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal, or, at least some modules / units can be implemented in the form of a software program, which runs on a processor integrated inside the terminal, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits.

[0063] An embodiment of the present invention also provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transient storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the auxiliary link transmission method of the unlicensed spectrum provided in any of the above embodiments are executed.

[0064] The embodiment of the present invention further provides another unlicensed spectrum auxiliary link transmission device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the above-mentioned Figures 1 to 3 The steps of the auxiliary link transmission method of the unlicensed spectrum provided in the corresponding embodiment.

[0065] A person skilled in the art may understand that all or part of the steps in the various methods of the above embodiments may be completed by instructing the relevant hardware through a program, and the program may be stored in a computer-readable storage medium, which may include: ROM, RAM, disk or CD, etc.

[0066] The technical solution of the present invention can be applied to 5G (5th generation) communication systems, as well as 4G and 3G communication systems, and can also be applied to various communication systems that will evolve subsequently, such as 6G and 7G.

[0067] The technical solution of the present invention is also applicable to different network architectures, including but not limited to relay network architecture, dual-link architecture, and Vehicle-to-Everything (vehicle-to-anything communication) architecture.

[0068] The 5G CN described in the embodiments of the present application may also be referred to as a new core network (new core), or 5GNewCore, or a next generation core network (next generation core, NGC), etc. 5G-CN is set independently of an existing core network, such as an evolved packet core network (evolved packet core, EPC).

[0069] The base station (BS) in the embodiment of the present application, which may also be referred to as a base station device, is a device deployed in a wireless access network to provide wireless communication functions. For example, the devices that provide base station functions in a 2G network include a base transceiver station (BTS) and a base station controller (BSC), the devices that provide base station functions in a 3G network include a node B (NodeB) and a radio network controller (RNC), the devices that provide base station functions in a 4G network include an evolved node B (evolved NodeB, eNB), in wireless local area networks (WLAN), the devices that provide base station functions are access points (AP), the devices that provide base station functions in 5G New Radio (NR) include a further evolved node B (gNB), and the devices that provide base station functions in future new communication systems, etc.

[0070] The terminal in the embodiments of the present application may refer to various forms of user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, terminal equipment (terminal equipment), wireless communication equipment, user agent or user device. The terminal equipment may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc., and the embodiments of the present application are not limited to this.

[0071] The embodiment of the present application defines a unidirectional communication link from the access network to the terminal as a downlink, and the transmission on the downlink

[0072] The data transmitted on the uplink is called uplink data, and the transmission direction of the uplink data is called the uplink direction.

[0073] It should be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article indicates that the associated objects before and after are in an "or" relationship.

[0074] The "plurality" appearing in the embodiments of the present application refers to two or more.

[0075] The first, second, etc. descriptions appearing in the embodiments of the present application are only used for illustration and distinction of the description objects. There is no order, nor do they indicate any special limitation on the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.

[0076] The "connection" in the embodiments of the present application refers to various connection methods such as direct connection or indirect connection to achieve communication between devices, and the embodiments of the present application do not impose any restrictions on this. The "network" and "system" in the embodiments of the present application express the same concept, and the communication system is the communication network.

[0077] It should be understood that in the embodiments of the present application, the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0078] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0079] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, the above embodiments can 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 or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0080] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0081] In the several embodiments provided in the present application, it should be understood that the disclosed methods, devices and systems can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0082] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, the functional units in the various embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0083] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform some steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store program codes.

[0084] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A method for transmitting auxiliary links in unlicensed spectrum, characterized in that: include: Determining a mappable position of a second SCI on an auxiliary link resource, wherein the auxiliary link resource is allocated in an interleaved manner; Mapping the second SCI to the mappable position in an order of interleaving priority and frequency domain priority, or in an order of interleaving priority; Transmitting the second SCI using the auxiliary link resources; Wherein, mapping the second SCI to the mappable position in the order of interleaving priority and frequency domain priority includes: when the mappable position covers n symbols, the first n-1 symbols are mapped in the order of frequency domain priority, and the nth symbol is mapped in the order of interleaving priority, wherein, n≥2； Mapping the second SCI to the mappable position in the order of interleaving priority includes: mapping the second SCI to the mappable position in the order of interleaving index numbers from high to low or from low to high, wherein mapping is performed within a single interleaving in the order of frequency domain from low to high or from high to low.

2. The method according to claim 1, characterized in that Determining a mappable position of the second SCI on the auxiliary link resource includes: In the symbol of the first DMRS to which the auxiliary link resource is mapped with the PSSCH, the resource element to which the DMRS is not mapped is determined as the mappable position.

3. The method according to claim 1, characterized in that Mapping the second SCI to the mappable position in the order of frequency domain priority includes: The second SCI is mapped to the mappable position in an order from low to high or from high to low in the frequency domain.

4. The method according to claim 1, characterized in that: The auxiliary link resources are allocated in an interleaved manner, including: the auxiliary link resources are mapped with the lowest interleaved index number of the PSCCH and the lowest interleaved index number of the PSSCH being consistent.

5. The method according to claim 1, characterized in that: Also includes: Sending reserved resource indication information, wherein the resource allocation result included in the reserved resource indication information is calculated based on the following formula: Among them, X is the resource allocation result; N interlace is the total number of interleavings.

6. An auxiliary link transmission device of unlicensed spectrum, characterized in that: include: A determination module, configured to determine a mappable position of a second SCI on an auxiliary link resource, wherein the auxiliary link resource is allocated in an interleaved manner; A mapping module, configured to map the second SCI to the mappable position in an order of interleaving priority and frequency domain priority, or in an order of interleaving priority; A transmission module, configured to transmit the second SCI using the auxiliary link resources; The mapping module performs the following steps: when the mappable position covers n symbols, the first n-1 symbols are mapped in a frequency domain priority order, and the nth symbol is mapped in an interleaving priority order, wherein n≥2; Mapping the second SCI to the mappable position in the order of interleaving priority includes: mapping the second SCI to the mappable position in the order of interleaving index numbers from high to low or from low to high, wherein mapping is performed within a single interleaving in the order of frequency domain from low to high or from high to low.

7. A computer-readable storage medium, wherein the computer-readable storage medium is a non-volatile storage medium or a non-transient storage medium, and a computer program is stored thereon, wherein: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are performed.

8. An auxiliary link transmission device of unlicensed spectrum, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the steps of the method according to any one of claims 1 to 5 are performed.

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