Methods for acquiring frequency resources, methods for determining them, devices, terminal equipment, and network equipment.

Abstract

The present disclosure provides a frequency resource acquisition method, a determination method, an apparatus, a terminal device, and a network device, the method being executed by a first terminal device and including obtaining an available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission using PDCP based on first information, the first information including at least one of a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between the first terminal device and a second terminal device, first indication information, and second indication information.

Description

Technical Field

[0001] (Cross - reference to related applications) This disclosure claims the priority of a Chinese patent application with application number 202211185611.9 and application title "Frequency Resource Acquisition Method, Determination Method, Apparatus, Terminal Device, and Network Device", which was filed with the Chinese Patent Office on September 27, 2022, and all of its contents are incorporated herein by reference. This disclosure relates to the field of communication technologies, and particularly to methods for acquiring frequency resources, determination methods, apparatuses, terminal devices, and network devices.

Background Art

[0002] Regarding the direct communication link (Sidelink: SL) interface (also referred to as the direct communication interface (SL interface)) used in Long Term Evolution (LTE (registered trademark)) technology, since wireless transmission is mainly performed by the broadcast method, the network sets the available carrier set of the transmission path corresponding to the ProSe Per - Packet Reliability (PPPR) threshold and the direct communication interface L2 destination address according to the System Information Block (SIB) or provisioning information. Since there is no SL unicast connection between the transmitting and receiving terminals, the SL receiving terminal does not provide any auxiliary information to the SL transmitting terminal. Therefore, the setting of the available carrier set of the transmission path corresponding to the direct communication interface L2 destination address remains unchanged and is fixed.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The embodiments of this disclosure provide a method, method, apparatus, terminal equipment, and network equipment for acquiring and determining frequency resources, thereby solving the problem of how to improve the gain of SL PDCP duplication by setting an SL frequency resource set corresponding to each transmission path of SL PDCP duplication. [Means for solving the problem]

[0004] To solve the above technical problems, an embodiment of the present disclosure is a method for acquiring frequency resources performed by a first terminal device, Based on the first information, this includes obtaining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by the Packet Data Convergence Protocol (PDCP), The first piece of information mentioned above is, The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device. First instruction information, which is instruction information for direct communication interface frequency resources determined by the first terminal device, and The present invention provides a method for acquiring frequency resources, which includes at least one of the following: second instruction information, which is instruction information for a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0005] Selectively, based on the first information, obtaining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by the Packet Data Convergence Protocol (PDCP) is: Transmitting the first information to a network device that provides services to a first terminal device, and receiving the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP transmitted from the network device, wherein the direct communication interface frequency resource set is determined by the network device based on the first information, or Based on the first information, this includes determining the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP.

[0006] Selectively, the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP includes the direct communication interface frequency resource set corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP.

[0007] Selectively, the number of direct communication interface frequency resource sets is the same as the number of transmission paths in the case of duplicate transmission by PDCP.

[0008] Selectively, the direct communication interface frequency resources in the direct communication interface frequency resource set are: Direct communication interface carrier, and / or Includes the direct communication interface bandwidth portion (BWP).

[0009] Selectively transmitting the aforementioned first information to a network device that provides services to a first terminal device is: This includes transmitting the first information to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0010] Selectively, the above method, Based on the second piece of information, the process further includes obtaining the logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP, The second piece of information mentioned above is: The available LCDs of the first terminal device in a unicast connection between the first terminal device and the second terminal device. LCD for redundant transmission via PDCP on the direct communication interface recommended for the first terminal device in a unicast connection between the first and second terminal devices. The LCID includes at least one of the LCIDs reserved for duplicate transmission by PDCP on the direct communication interface from the first terminal device in a unicast connection between the first terminal device and the second terminal device.

[0011] Selectively, based on the first information, obtaining the LCID corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP is: The second information is transmitted to a network device that provides services to the first terminal device, and the LCID corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP is received from the network device, wherein the LCID is determined by the network device providing services to the first terminal device based on the second information, or Based on the second piece of information, this includes determining the LCID corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP.

[0012] Selectively, based on the second piece of information, determining the LCID corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP is: From the available LCIDs, N LCIDs are randomly selected, each of the N LCIDs is assigned to a transmission path, each LCID corresponds one-to-one with a transmission path, and N is equal to the number of transmission paths of the direct communication interface in the case of duplicate transmission by PDCP, or The method includes randomly selecting a first LCID from a first LCID set to be the LCID for one transmission path of the direct communication interface in the case of overlapping transmission by PDCP, determining the LCIDs for other transmission paths of the direct communication interface in the case of overlapping transmission by PDCP according to the relationship between the first LCID and the LCIDs of different transmission paths, wherein the first LCID is an available LCID, and the first LCID set includes available LCIDs for the direct communication interfaces of a first terminal device and a second terminal device.

[0013] Selectively transmitting the second information to a network device that provides services to the first terminal device is: This includes transmitting the second information to the network device by at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0014] Selectively, the above method, The further includes transmitting to a second terminal device the available direct communication interface frequency resource set for each transmission path in the case of PDCP-based duplicate transmission by setting up or activating PDCP-based duplicate transmission on the direct communication interface.

[0015] Selectively, the PDCP-based activation signaling for duplicate transmission in the direct communication interface includes at least one of RRC signaling, media access control elements (MAC CE), or physical layer signaling.

[0016] Selectively, based on the first information, the method determines the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP, and then, When the first terminal device uses the network configuration resource allocation mode, it further includes transmitting, to a network device, a set of available direct communication interface frequency resources of each transmission path in the case of duplicate transmission by the PDCP.

[0017] Optionally, the set of direct communication interface frequency resources includes one or more direct communication interface frequency resources.

[0018] Optionally, when the set of direct communication interface frequency resources includes at least two frequency resources, the method further includes: For each logical channel corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of duplicate transmission by the PDCP, selecting one target direct communication interface frequency resource from the set of direct communication interface frequency resources corresponding to the transmission path and performing data transmission.

[0019] Optionally, the first indication information includes: Channel occupancy ratio (CBR) or channel occupancy (CO) in each direct communication interface frequency resource of the first terminal device; Direct communication interface parameters in each direct communication interface frequency resource of the first terminal device, including direct communication interface channel state information (SL-CSI), direct communication interface reference signal received power (SL-RSRP), or direct communication interface discovery reference signal received power (SD-RSRP); A set of direct communication interface frequency resources corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by the PDCP, which is desired for the first terminal device; and At least one of a set of available direct communication interface frequency resources of the direct communication interface in the case of duplicate transmission by the PDCP, which is desired for the first terminal device.

[0020] Alternatively, the second indication information is CBR or CO in each direct communication interface frequency resource of the second terminal device, Sidelink parameters in each direct communication interface frequency resource of the second terminal device, A sidelink parameter frequency resource set corresponding to a transmission path of a direct communication interface in the case of duplicate transmission by PDCP, which is desired for the second terminal device, and

[0021] An embodiment of the present disclosure is a method for determining a frequency resource executed by a network device, including determining, for a first terminal device, a set of available direct communication interface frequency resources for each transmission path in the case of duplicate transmission by a packet data convergence protocol (PDCP) based on first information, The first information is A combination of a layer 2 source address and a layer 2 destination address in a unicast connection between a first terminal device and a second terminal device, First indication information that is indication information of a direct communication interface frequency resource determined by the first terminal device, and A method for determining a frequency resource is further provided, including at least one of second indication information that is indication information of a direct communication interface frequency resource received by the first terminal device from the second terminal device.

[0022] Alternatively, the method further includes receiving first information transmitted from the first terminal device.

[0023] Alternatively, receiving first information transmitted from the first terminal device is ​This includes receiving first information transmitted from a first terminal device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0024] Selectively, the above method, Based on the second piece of information, the process further includes determining the logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP, The second piece of information mentioned above is: The available LCDs of the first terminal device in a unicast connection between the first terminal device and the second terminal device. LCID for redundant transmission via PDCP on the direct communication interface recommended for the first terminal device in a unicast connection between the first and second terminal devices, and The LCID includes at least one of the LCIDs reserved for duplicate transmission by PDCP on the direct communication interface from the first terminal device in a unicast connection between the first terminal device and the second terminal device.

[0025] Selectively, based on the second piece of information, determining the logic channel identifier (LCID) corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP is: From the available LCIDs, N LCIDs are randomly selected, each of the N LCIDs is assigned to a transmission path, each LCID corresponds one-to-one with a transmission path, and N is equal to the number of transmission paths of the direct communication interface in the case of duplicate transmission by PDCP, or The method includes randomly selecting a first LCID from a first LCID set to be the LCID for one transmission path of the direct communication interface in the case of overlapping transmission by PDCP, determining the LCIDs for other transmission paths of the direct communication interface in the case of overlapping transmission by PDCP according to the relationship between the first LCID and the LCIDs of different transmission paths, wherein the first LCID is an available LCID, and the first LCID set includes available LCIDs for the direct communication interfaces of a first terminal device and a second terminal device.

[0026] Selectively, the above method, The further includes receiving second information transmitted from the first terminal device.

[0027] Selectively receiving second information transmitted from the first terminal device is: This includes receiving second information transmitted from a first terminal device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0028] Selectively, the above method, The further includes transmitting a logic channel identifier (LCID) corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP to a first terminal device.

[0029] Selectively, the above method, The further includes transmitting to a first terminal device the set of available direct communication interface frequency resources for each transmission path in the case of PDCP-based duplicate transmission by setting up duplicate transmission via PDCP on the direct communication interface or activating duplicate transmission via PDCP on the direct communication interface.

[0030] Selectively, the PDCP-based activation signaling for duplicate transmission in the direct communication interface includes at least one of RRC signaling, media access control elements (MAC CE), or physical layer signaling.

[0031] Embodiments of this disclosure further provide a terminal device which is a first terminal device, the terminal device comprising a memory, a transceiver, and a processor. Memory is used to store computer programs. The transceiver is used to transmit and receive data under the control of the processor. The processor reads the computer program in the memory and, based on the first information, performs the operation of obtaining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by the Packet Data Convergence Protocol (PDCP). The first piece of information mentioned above is, The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device. First instruction information, which is instruction information for direct communication interface frequency resources determined by the first terminal device, and The device is characterized by including at least one of the following: second instruction information, which is instruction information for a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0032] Selectively, the processor reads a computer program from the memory, An operation to transmit the first information to a network device that provides services to a first terminal device, and to receive the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP, wherein the direct communication interface frequency resource set is determined by the network device based on the first information, or Based on the first piece of information, this is for performing an operation to determine the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP. Selectively, the processor reads a computer program from the memory, This is for performing an operation to transmit the first information to the network device using at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling. Selectively, the processor reads a computer program from the memory, Based on the second piece of information, this further involves obtaining the logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP. The second piece of information mentioned above is: The available LCDs of the first terminal device in a unicast connection between the first terminal device and the second terminal device. LCD for redundant transmission via PDCP on the direct communication interface recommended for the first terminal device in a unicast connection between the first and second terminal devices. The LCID includes at least one of the LCIDs reserved for duplicate transmission by PDCP on the direct communication interface from the first terminal device in a unicast connection between the first terminal device and the second terminal device.

[0033] Selectively, the processor reads a computer program from the memory, An operation to transmit the second information to a network device that provides services to a first terminal device, and to receive an LCID corresponding to each transmission path of the SLRB transmitted from the network device in the case of duplicate transmission by PDCP, wherein the LCID is determined by the network device that provides services to the first terminal device based on the second information, or Based on the second piece of information, this is used to perform the operation of determining the LCID corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP.

[0034] Selectively, the processor reads a computer program from the memory, From the available LCIDs, randomly select N LCIDs, assign each of the N LCIDs to a corresponding transmission path, and perform an operation where each LCID corresponds one-to-one with a transmission path, and N is equal to the number of transmission paths in the direct communication interface in the case of duplicate transmission by PDCP, or The purpose is to perform operations such as randomly selecting a first LCID from a first LCID set to be the LCID for one transmission path of the direct communication interface in the case of overlapping transmission by PDCP, determining the LCIDs for other transmission paths of the direct communication interface in the case of overlapping transmission by PDCP according to the relationship between the first LCID and the LCIDs of different transmission paths, and confirming that the first LCID is an available LCID and that the first LCID set includes available LCIDs for the direct communication interfaces of the first and second terminal devices.

[0035] Selectively, the processor reads a computer program from the memory, This further involves performing an operation to transmit the second information to the network device by at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0036] Selectively, the processor reads a computer program from the memory, This further enables the operation of transmitting to a second terminal device the available direct communication interface frequency resource set for each transmission path in the case of PDCP-based duplicate transmission, through PDCP-based duplicate transmission setting signaling or PDCP-based duplicate transmission activation signaling on the direct communication interface.

[0037] Selectively, the processor reads a computer program from the memory, When the first terminal device uses the network configuration resource allocation mode, it further performs the operation of sending the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP to the network device.

[0038] Selectively, the processor reads a computer program from the memory, This further performs the operation of selecting one target direct communication interface frequency resource from the direct communication interface frequency resource set corresponding to the transmission path for each logic channel corresponding to the transmission path of a direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP, and transmitting data.

[0039] Embodiments of this disclosure further provide network equipment, which includes memory, a transceiver, and a processor. Memory is for storing computer programs, and the transceiver is for transmitting and receiving data under the control of the processor, and the processor reads the computer program in the memory, Based on the first information, this is for performing an operation to determine the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by the Packet Data Convergence Protocol (PDCP) for the first terminal device. The first piece of information mentioned above is, The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device. First instruction information, which is instruction information for direct communication interface frequency resources determined by the first terminal device, and The second instruction information includes at least one of the instruction information for a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0040] An embodiment of the present disclosure is a frequency resource acquisition device applied to a first terminal device, Based on first information, it includes a first acquisition unit for obtaining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by Packet Data Convergence Protocol (PDCP), The first piece of information mentioned above is, The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device. First instruction information, which is instruction information for direct communication interface frequency resources determined by the first terminal device, and The present invention further provides a frequency resource acquisition device that includes at least one of the following: second instruction information, which is instruction information for a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0041] An embodiment of the present disclosure is a frequency resource determination device applied to network equipment, Based on first information, a first determination unit is provided for determining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by Packet Data Convergence Protocol (PDCP) for a first terminal device, The first piece of information mentioned above is, The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device. First instruction information, which is instruction information for direct communication interface frequency resources determined by the first terminal device, and The present invention further provides a frequency resource determination device that includes at least one of the following: second instruction information, which is instruction information for a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0042] Embodiments of the present disclosure provide a processor-readable storage medium in which a computer program is stored, and the computer program causes the processor to execute the above method. [Effects of the Invention]

[0043] The beneficial effects of this disclosure are as follows: In the above solution, based on the first information, the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP can be obtained, thereby dynamically determining the direct communication interface frequency resource set and improving the gain of overlapping transmission by PDCP on the direct communication interface. [Brief explanation of the drawing]

[0044] To more clearly illustrate the embodiments or related technologies of this disclosure, the following is a brief introduction to the accompanying drawings necessary for describing the embodiments or related technologies. It is clear that the accompanying drawings described below represent only a few embodiments of this disclosure, and it is possible for those skilled in the art to obtain other accompanying drawings based on these, provided they do not expend any creative effort. [Figure 1] This is a schematic diagram illustrating PDCPduplication. [Figure 2] This is a flowchart showing the method for acquiring frequency resources in an embodiment of the present disclosure. [Figure 3]This is a flowchart illustrating the method for determining frequency resources in an embodiment of the present disclosure. [Figure 4] This is a detailed flowchart illustrating specific application scenarios of the embodiments of this disclosure. [Figure 5] This is a detailed flowchart 2 illustrating specific application scenarios of the embodiments of this disclosure. [Figure 6] This is flowchart 3, a detailed flowchart illustrating specific application scenarios of the embodiments of this disclosure. [Figure 7] This is a schematic diagram showing a unit of a frequency resource acquisition device in an embodiment of the present disclosure. [Figure 8] This is a structural diagram showing a terminal device in an embodiment of the present disclosure. [Figure 9] This is a schematic diagram showing a unit of a frequency resource determination device in an embodiment of the present disclosure. [Figure 10] This is a structural diagram showing the network equipment in an embodiment of the present disclosure. [Modes for carrying out the invention]

[0045] The following provides a clear and complete description of the technical concepts of the embodiments of this disclosure, linking them to the accompanying drawings. Clearly, the embodiments described are only a portion of the embodiments of this disclosure, not all of them. Based on the embodiments of this disclosure, all other embodiments that a person skilled in the art can obtain, provided that they do not exert any creative effort, are all within the scope of protection of this disclosure.

[0046] The terms “first,” “second,” etc., used in the published specification and claims are intended to distinguish similar subjects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this manner may be interchangeable where appropriate, so that the embodiments of the disclosure described herein may be carried out in an order other than that illustrated or described herein. Furthermore, the terms “includes,” “composes,” and any variations thereof are intended to cover non-exclusive “includes,” meaning that, for example, including a series of steps or units of a process, method, system, product, or apparatus does not limit itself to explicitly listing these steps or units, but may also include other steps or units that are not explicitly listed or are inherent to these processes, methods, products, or apparatus.

[0047] In the embodiments of this disclosure, the term "and / or" indicates a relationship between related objects, and there may be three types of relationships. For example, with A and / or B, there may be three types of relationships: A simply exists, A and B exist simultaneously, and B simply exists. The symbol " / " generally indicates that the objects related before and after have an "or" relationship. In the embodiments of this disclosure, the term "plural" refers to two or more, and the other counters are similar.

[0048] In the embodiments of this disclosure, words such as “exemplary” or “for example” are intended to represent examples, illustrations, or explanations. In the embodiments of this disclosure, any embodiment or design solution described as “exemplary” or “for example” should not be construed as being more preferable or superior to other embodiments or design solutions. To put it appropriately, the use of words such as “exemplary” or “for example” is intended to represent the relevant concepts in a specific manner.

[0049] The following is a brief explanation of the relevant concepts referred to in this disclosure.

[0050] 1. Regarding the mechanism of duplication transmission using the Packet Data Convergence Protocol (PDCP) in the LTE direct communication interface, From a wireless design perspective, the LET direct communication interface only supports broadcast transmission methods.

[0051] To improve the reliability of data transmission in direct communication interfaces, a PDCP duplication mechanism is introduced. PDCP duplication means that one radio bearer (corresponding to one PDCP entity) in the PDCP layer transmits data through each of multiple logic channels (each logic channel corresponds to one RLC entity) in the Radio Link Control (RLC) layer, and the RLC entities then transmit the data to the Media Access Control (MAC) layer. A schematic diagram is shown in Figure 1.

[0052] The establishment of a radio bearer in the LTE direct communication interface is entirely determined by the terminal implementation, with no involvement from the base station. The base station only sets one Proximity Service Per Packet Reliability (PPPR) threshold, and the terminal directly determines whether to activate PDCP duplication based on whether the PPPR corresponding to the radio bearer in the direct communication interface is below the threshold.

[0053] Regarding NewRadio (NR)SL, unlike LTESL, NRSL supports the SL unicast transmission method. For SL unicast transmission, the method in which the available carrier set for the transmission path is statically configured in duplication transmission using the LET Packet Data Convergence Protocol (PDCP) is not applicable to the NRSL unicast transmission method.

[0054] The following describes embodiments of the present disclosure with reference to the attached drawings. The methods, methods, apparatus, terminal equipment, and network equipment for acquiring frequency resources provided in the embodiments of the present disclosure may be applied to wireless communication systems. Such wireless communication systems may be systems using fifth-generation (5G) mobile communication technology (hereinafter abbreviated as 5G systems). As will be apparent to those skilled in the art, 5GNR systems are illustrative and not limiting.

[0055] The embodiments of this disclosure provide methods, methods, apparatus, terminal equipment, and network equipment for acquiring and determining frequency resources, thereby solving the problems of how to configure the SL frequency resource set corresponding to each transmission path of SL PDCP duplication and how to improve the gain of SL PDCP duplication.

[0056] Here, the method and apparatus are based on a technical concept in the same application. Since the method and apparatus have similar principles for solving the problem, they may be referenced to each other in the implementation of the apparatus and the method, and redundant parts are omitted.

[0057] As shown in Figure 2, an embodiment of the present disclosure provides a method for acquiring frequency resources performed by a first terminal device, the method comprising the following steps: Step S201: Based on the first information, obtain the set of available direct communication interface frequency resources for each transmission path in the case of overlapping transmission by Packet Data Convergence Protocol (PDCP).

[0058] Here, the first piece of information in this article is: The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between the first terminal device and the second terminal device (A11), First instruction information (A12), which is instruction information for a direct communication interface frequency resource determined by the first terminal device, and The second instruction information (A13), which is instruction information for a direct communication interface frequency resource received by the first terminal device from the second terminal device, includes at least one of these.

[0059] In the embodiments of this disclosure, the problem of the performance of SL PDCPduplication being affected by the fact that the frequency resource set on the direct communication interface can only be statically set is avoided by dynamically obtaining the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP based on the first information.

[0060] Selectively, the first terminal device described in the embodiments of this disclosure refers to a transmitting terminal, that is, a terminal device that transmits data in the process of direct communication, and the second terminal device refers to a receiving terminal, that is, a device that receives data in the process of direct communication.

[0061] Selectively, in another embodiment of the present disclosure, the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP includes the direct communication interface frequency resource set corresponding to each transmission path of the direct communication interface radio bearer (Sidelink Radio Bearer: SLRB) in the case of overlapping transmission by PDCP.

[0062] Selectively, in another embodiment of the present disclosure, the number of direct communication interface frequency resource sets is the same as the number of transmission paths in the case of overlapping transmission by PDCP. In other words, the total number of SLRB transmission paths in the case of duplicate transmission using PDCP is the same as the total number of direct communication interface frequency resource sets.

[0063] Selectively, in another embodiment of the present disclosure, the direct communication interface frequency resources in the direct communication interface frequency resource set are: Direct communication interface carrier, and / or Includes the direct communication interface bandwidth portion (BWP).

[0064] Selectively, in another embodiment of the present disclosure, the direct communication interface frequency resource set includes one or more direct communication interface frequency resources.

[0065] Selectively, if the direct communication interface frequency resource set includes at least two frequency resources, the method is: In the case of duplicate transmission by PDCP, the method further includes selecting one target direct communication interface frequency resource from the direct communication interface frequency resource set corresponding to each transmission path of a direct communication interface radio bearer (SLRB) and transmitting data to the logic channel corresponding to the transmission path.

[0066] In that case, if the resource determination method selected by the terminal is used, the first terminal device needs to select one direct communication interface frequency resource from the direct communication interface frequency resource set to transmit data. For example, the first terminal device may randomly select and use one resource from the direct communication interface frequency resources. Note that the implementation method of randomly selecting one resource from the direct communication interface frequency resources described above is merely one example. Any implementation method of selecting one resource from the direct communication interface frequency resources falls within the scope of protection of this disclosure.

[0067] Selectively, in one embodiment of the present disclosure, the first instruction information is The channel busy ratio (CBR) or channel occupancy (CO) (A121) of each direct communication interface frequency resource of the first terminal equipment, A direct communication interface parameter (A122) in each direct communication interface frequency resource of the first terminal equipment, which includes direct communication interface channel state information (Sidelink-Channel State Information: SL-CSI), direct communication interface reference signal receiving power (Sidelink-Reference Signal Receiving Power: SL-RSRP), or direct communication interface discovery reference signal receiving power (Side link Discover-Reference Signal Receiving Power: SD-RSRP), A direct communication interface frequency resource set (A123) corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the first terminal device, and The first terminal device includes at least one of the available direct communication interface frequency resource sets (A124) for the direct communication interface in the case of duplicate transmission by PDCP.

[0068] Selectively, in one embodiment of the present disclosure, the second instruction information is CBR or CO(A131) in each direct communication interface frequency resource of the second terminal equipment, Sidelink parameters (A132) in each direct communication interface frequency resource of the second terminal equipment, A sidelink parameter frequency resource set (A133) corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the second terminal device, and The second terminal device includes at least one of the available sidelink parameter frequency resource sets (A134) for the direct communication interface in the case of duplication due to PDCP.

[0069] The second instruction information is typically transmitted to the first terminal device by the second terminal device. Specifically, the second terminal device transmits the second instruction information to the first terminal device via a direct communication interface.

[0070] In the embodiments of this disclosure, there are two methods for the first terminal device to obtain the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP. One method is for the first terminal device to directly determine the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP based on the first information. The other method is for the first terminal device to directly receive the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP transmitted from a network device, that is, for the first terminal device to transmit the first information to a network device that provides services to the first terminal device, receive the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP transmitted from the network device, and for the direct communication interface frequency resource set to be determined by the network device based on the first information. The following describes the two implementation methods described above.

[0071] Method 1: The first terminal device makes its own decisions directly based on the first information. In such an implementation, the method for determining the direct communication interface frequency resource set by the first terminal device includes one of the following methods:

[0072] In method B11, based on the first information, the currently available SL frequency resource set is determined, the SL frequency resources in the SL frequency resource set are sorted in descending order of CBR or CO, and then the SL frequency resources are sequentially allocated to each transmission path of the direct communication interface in the case of overlapping transmission by PDCP. In such a method for determining direct communication interface frequency resource sets, each direct communication interface frequency resource set contains only one direct communication interface frequency resource.

[0073] In method B12, after determining the currently available SL frequency resource set based on the first information, the SL frequency resources in the SL frequency resource set are randomly allocated in groups equal to the number of transmission paths in the direct communication interface in the case of overlapping transmission by PDCP, and the SL frequency resources of each group are designated as the SL frequency resource set corresponding to the next transmission on the direct communication interface in the case of overlapping transmission by PDCP. In such a method for determining direct communication interface frequency resource sets, each direct communication interface frequency resource set generally includes one or more (i.e., at least two) direct communication interface frequency resources.

[0074] Selectively, in that case, the first terminal device should determine and acquire the direct communication interface frequency resource set, and then transmit to the second terminal device the available direct communication interface frequency resource set for each transmission path in the case of PDCP-based duplicate transmission by setting up or activating PDCP-based duplicate transmission on the direct communication interface.

[0075] Selectively, the PDCP-based activation signaling for duplicate transmission in the direct communication interface includes at least one of RRC signaling, media access control elements (MACCE), or physical layer signaling.

[0076] Selectively, if the first terminal device uses the network configuration resource allocation mode, the first terminal device should further transmit to the network device the available direct communication interface frequency resource sets for each transmission path in the case of overlapping transmission by PDCP, thereby facilitating the network device's use of the direct communication interface frequency resource sets.

[0077] Method 2, the first terminal device directly receives the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP, transmitted from the network device.

[0078] In selective implementations, the first information is transmitted to a network device that provides services to a first terminal device. This includes transmitting the first information to the network device by at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface RRC signaling.

[0079] Selectively, in that case, the first terminal device should, after obtaining the direct communication interface frequency resource set transmitted from the network device, further transmit to the second terminal device the available direct communication interface frequency resource set for each transmission path in the case of PDCP-based duplicate transmission, either through PDCP-based duplicate transmission configuration signaling on the direct communication interface or PDCP-based duplicate transmission activation signaling on the direct communication interface.

[0080] Selectively, the PDCP-based duplicate transmission setting signaling in the direct communication interface includes at least one of RRC signaling, MACCE, or physical layer signaling.

[0081] Furthermore, network equipment may use methods B11 or B12 described above to determine the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP.

[0082] Selectively, in another embodiment of the present disclosure, the method is Based on the second piece of information, the process further includes obtaining the Logic Channel Identity (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) in the case of duplicate transmission by PDCP.

[0083] Specifically, the first terminal device can obtain the LCID corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP by one of the following methods.

[0084] In method C11, the LCID corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP is determined based on the second piece of information. In that case, the first terminal device itself determines, based on the second information, the LCID corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP.

[0085] Selectively, the specific implementation method for the first terminal device to determine the LCID corresponding to each transmission path may include one of the following methods.

[0086] In method C111, N LCIDs are randomly selected from the available LCIDs, and each of the N LCIDs is assigned to a transmission path. Each LCID corresponds one-to-one with a transmission path, and N is equal to the number of transmission paths of the direct communication interface in the case of duplicate transmission by PDCP.

[0087] In such an implementation method, N LCIDs are randomly selected and acquired, and then each of the N LCIDs is transmitted to one of the N transmission paths. The available LCIDs may be understood as LCIDs corresponding to unused logic channels, and may be abbreviated as unoccupied LCIDs. That is, the transmitting terminal in the direct communication interface may randomly select the same number of LCIDs from the currently unoccupied LCIDs as the number of transmission paths in the direct communication interface in the case of duplicate transmission by PDCP, and each of the selected LCIDs may be designated as the LCID corresponding to each transmission path.

[0088] In method C112, a first LCID is randomly selected from a first LCID set to be the LCID for one transmission path of the direct communication interface in the case of overlapping transmission by PDCP, and the LCIDs for the other transmission paths of the direct communication interface in the case of overlapping transmission by PDCP are determined according to the relationship between the first LCID and the LCDs of different transmission paths, and the first LCID is an available LCID, and the first LCID set includes available LCIDs for the direct communication interfaces of the first terminal device and the second terminal device.

[0089] In this case, first, an LCID corresponding to one transmission path is determined, and the LCIDs of other paths have an association relationship with the determined transmission path's LCID. This association relationship may be promised by a protocol or established by network equipment. For example, the difference between the LCIDs of other paths and the determined transmission path's LCID may be less than or equal to a certain threshold. For example, the LCIDs of other paths and the determined transmission path's LCID may jointly form an arithmetic or geometric progression. For example, for an LCH with LCID=2, the LCID of the related SL PDC Pduplication is LCID=12. Note that the above is just one example of an association relationship. Any method of determining the LCIDs of other paths using an association relationship method falls within the scope of protection of this disclosure.

[0090] That is, the transmitting terminal in the direct communication interface may randomly select one unoccupied LCID from the first LCID set to be the LCID for one transmission path of the direct communication interface in the case of overlapping transmission by PDCP, and then determine the LCIDs corresponding to other transmission paths according to the predetermined relationship between the LCID and the LCIDs of different transmission paths of the direct communication interface in the case of overlapping transmission by PDCP.

[0091] In method C12, the second information is transmitted to a network device that provides services to a first terminal device, and an LCID corresponding to each transmission path of the SLRB transmitted from the network device in the case of duplicate transmission by PDCP is received, wherein the LCID is determined by the network device that provides services to the first terminal device based on the second information.

[0092] In this case, the LCID corresponding to each transmission path is determined by the network equipment based on the second information and transmitted to the first terminal equipment. Selectively, the network equipment usually determines the LCID corresponding to each transmission path using method C111 or C112.

[0093] Selectively, in that case, the first terminal device transmits the second information to the network device by at least one of the following: Side link UE Information, UE Assistance Information, and Uu interface RRC signaling.

[0094] Furthermore, the second information mentioned above is The available LCID(C21) of the first terminal device in a unicast connection between the first terminal device and the second terminal device, LCID(C22) for redundant transmission via PDCP on the direct communication interface recommended for the first terminal device in a unicast connection between the first and second terminal devices, and The LCID(C23) reserved for duplicate transmission by PDCP on the direct communication interface from the first terminal device in a unicast connection between the first terminal device and the second terminal device is included.

[0095] Furthermore, at least one embodiment of this disclosure provides a method for configuring duplicate resource transmission in a direct communication interface. According to this method, a transmitting terminal in a direct communication interface or a network device to which a transmitting terminal in a direct communication interface belongs can solve the problem of how to configure the direct communication interface frequency resource set corresponding to each transmission path of the direct communication interface in the case of duplicate transmission by PDCP, and can better improve the gain of duplicate transmission by PDCP in the direct communication interface.

[0096] The technical solutions provided in the embodiments of this disclosure can be applied to multiple systems, particularly 5G systems. For example, applicable systems may include Global System of Mobile communication (GSM®), Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA®), General Packet Radio Service (GPRS) systems, Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Long Term Evolution advanced (LTE-A) systems, Universal Mobile Telecommunications System (UMTS), WiMAX (Worldwide Interoperability for Microwave Access) systems, and 5G New Radio (NR) systems. Any of these systems may include terminal equipment and network equipment. The system may include core network components such as an evolved packet system (EPS) or a 5G system (5GS).

[0097] The terminal equipment according to the embodiments of this disclosure is equipment that provides voice and / or data communication to a user and may be a handheld device with wireless connectivity or other processing equipment connected to a wireless modem. The name of the terminal equipment may differ in different systems. For example, in a 5G system, the terminal equipment may be called User Equipment (UE). The wireless terminal equipment is capable of communicating with one or more Core Networks (CN) via a Radio Access Network (RAN). The wireless terminal equipment may be a mobile terminal device such as a mobile phone (also called a "cellular" phone) or a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-integrated, or vehicle-mounted mobile device that exchanges language and / or data with the Radio Access Network. Examples of such devices include Personal Communication Service (PCS) telephones, cordless telephones, Session Initiation Protocol (SIP) telephones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). Wireless terminal equipment may also be called systems, subscriber units, subscriber stations, mobile stations, mobile stages, remote stations, access points, remote terminals, access terminals, user terminals, user agents, and user devices, and are not limited to these in the embodiments of this disclosure.

[0098] The network equipment relating to the embodiments of this disclosure may be a base station. The base station may include multiple cells that provide services to terminals. Depending on the specific application, the base station may also be called an access point, or a device that communicates with wireless terminal equipment through one or more sectors on an air interface in an access network, or it may have another name. The network equipment may be used to exchange received air frames with Internet Protocol (IP) packets to act as a router between wireless terminal equipment and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network equipment may further coordinate attribute management for the air interface. For example, the network equipment relating to the embodiments of this disclosure may be a base transceiver station (BTS) in a global system of mobile communication (GSM) or code division multiple access (CDMA), a node (NodeB) in a wideband code division multiple access (WCDMA), an evolutionary node (eNB or e-NodeB) in a long-term evolution (LTE) system, a 5G base station (gNB) in a next-generation 5G network system, or even a home evolved node (HeNB), relay node, femto base station, pico base station, etc., and is not limited to the embodiments of this disclosure.In some network configurations, network devices may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized and distributed units may be geographically separated.

[0099] One or more antennas may be used between network devices and terminal devices to perform Multi Input Multi Output (MIMO) transmission. MIMO transmission may be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). Depending on the combination and number of antennas, MIMO transmission may be 2D MIMO (2-Dimensional MIMO), 3D MIMO (3-Dimensional MIMO), Full Dimension (FD-MIMO), or massive MIMO, and may also be diversity transmission, pre-coding transmission, or beamforming transmission.

[0100] As shown in Figure 3, embodiments of the present disclosure provide a method for determining frequency resources performed by network equipment, the method being The process includes step S301, which, based on the first information, determines the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by the Packet Data Convergence Protocol (PDCP) for a first terminal device.

[0101] Here, the first piece of information in this article is: The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device. First instruction information, which is instruction information for direct communication interface frequency resources determined by the first terminal device, and The second instruction information includes at least one of the instruction information for a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0102] Selectively, the above method, The further includes receiving first information transmitted from a first terminal device.

[0103] Selectively receiving first information transmitted from the first terminal device is, This includes receiving first information transmitted from a first terminal device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0104] Selectively, the above method, Based on the second piece of information, the system further includes determining the logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP.

[0105] Here, the second piece of information is: The available LCDs of the first terminal device in a unicast connection between the first terminal device and the second terminal device. LCD for redundant transmission via PDCP on the direct communication interface recommended for the first terminal device in a unicast connection between the first and second terminal devices. The LCID includes at least one of the LCIDs reserved for duplicate transmission by PDCP on the direct communication interface from the first terminal device in a unicast connection between the first terminal device and the second terminal device.

[0106] Selectively, based on the second piece of information, determining the logic channel identifier (LCID) corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP is: From the available LCIDs, N LCIDs are randomly selected, each of the N LCIDs is assigned to a transmission path, each LCID corresponds one-to-one with a transmission path, and N is equal to the number of transmission paths of the direct communication interface in the case of duplicate transmission by PDCP, or The method includes randomly selecting a first LCID from a first LCID set to be the LCID for one transmission path of the direct communication interface in the case of overlapping transmission by PDCP, determining the LCIDs for other transmission paths of the direct communication interface in the case of overlapping transmission by PDCP according to the relationship between the first LCID and the LCIDs of different transmission paths, wherein the first LCID is an available LCID, and the first LCID set includes available LCIDs for the direct communication interfaces of a first terminal device and a second terminal device.

[0107] Selectively, the above method, The further includes receiving second information transmitted from the first terminal device.

[0108] Selectively receiving second information transmitted from the first terminal device is: This includes receiving second information transmitted from a first terminal device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0109] Selectively, the above method, The further includes transmitting a logic channel identifier (LCID) corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP to a first terminal device.

[0110] Selectively, the above method, The further includes transmitting to a first terminal device the set of available direct communication interface frequency resources for each transmission path in the case of PDCP-based duplicate transmission by setting up duplicate transmission via PDCP on the direct communication interface or activating duplicate transmission via PDCP on the direct communication interface.

[0111] Selectively, the PDCP-based activation signaling for duplicate transmission in the direct communication interface includes at least one of RRC signaling, media access control elements (MAC CE), or physical layer signaling.

[0112] Selectively, the first instruction information is Channel occupancy rate (CBR) or channel occupancy (CO) in each direct communication interface frequency resource of the first terminal equipment, Direct communication interface parameters in each direct communication interface frequency resource of the first terminal equipment, the direct communication interface parameters including direct communication interface channel status information (SL-CSI), direct communication interface reference signal received power (SL-RSRP), or direct communication interface discovery reference signal received power (SD-RSRP), A set of direct communication interface frequency resources corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the first terminal device, and The first terminal device includes at least one of the available direct communication interface frequency resource sets for the direct communication interface in the case of duplicate transmission by PDCP.

[0113] Selectively, the second instruction information is CBR or CO in each direct communication interface frequency resource of the second terminal equipment, Side link parameters in each direct communication interface frequency resource of the second terminal equipment, A sidelink parameter frequency resource set corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the second terminal device, and The second terminal device includes at least one of the available sidelink parameter frequency resource sets for the direct communication interface in the case of duplication due to PDCP.

[0114] Selectively, the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP includes the direct communication interface frequency resource set corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP.

[0115] Selectively, the number of direct communication interface frequency resource sets is the same as the number of transmission paths in the case of duplicate transmission by PDCP.

[0116] Selectively, the direct communication interface frequency resources in the direct communication interface frequency resource set are: Direct communication interface carrier, and / or Includes the direct communication interface bandwidth portion (BWP).

[0117] Furthermore, all implementation methods in the above embodiments are applicable to embodiments of frequency resource determination methods applied to the network side, and similar technical effects can be obtained. A detailed explanation is omitted here.

[0118] The following describes in detail the specific application methods of this disclosure from the perspective of the transmitting and receiving terminals.

[0119] Application scenario 1: When the transmitting terminal determines the available direct communication interface frequency resource set for each transmission path and the LCID corresponding to each transmission path in the case of duplicate transmission by PDCP, This mainly includes the following processes.

[0120] In step S11, the transmitting terminal in the direct communication interface determines the available direct communication interface frequency resource set for each transmission path of the direct communication interface and the LCID corresponding to each transmission path in the case of duplicate transmission by PDCP.

[0121] In that case, the transmitting terminal in the direct communication interface determines the LCID corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP, and the direct communication interface frequency resource set corresponding to each transmission path.

[0122] More specifically, in the case of PDCPduplication, how the transmitting terminal determines the LCID corresponding to each transmission path of the direct communication interface radio bearer (SLRB) and the direct communication interface frequency resource set corresponding to each transmission path may be determined by the implementation of the transmitting terminal in the direct communication interface. An example is given below.

[0123] The method for determining the LCID may be any of the following methods, but is not limited to them. In a direct communication interface, the transmitting terminal may randomly select the same number of LCIDs from the currently available unoccupied LCIDs as the number of transmission paths in the direct communication interface in the case of duplicate transmission by PDCP, and may also assign each of the selected LCIDs to the respective transmission path. In a direct communication interface, the transmitting terminal may randomly select one unoccupied LCID from a first LCID set to be the LCID for one transmission path of the direct communication interface in the case of overlapping transmission by PDCP, and then determine the LCIDs corresponding to other transmission paths according to the predetermined relationship between the said LCID and the LCIDs of different transmission paths of the direct communication interface in the case of overlapping transmission by PDCP.

[0124] The first LCID set includes available LCIDs for the direct communication interfaces in the first and second terminal devices.

[0125] The method for determining the direct communication interface frequency resource set corresponding to each of the aforementioned transmission paths may be any of the following methods, but is not limited to them. A method for determining the currently available SL frequency resource set based on the first information, sorting the SL frequency resources in the SL frequency resource set in descending order of CBR or CO, and then sequentially allocating the SL frequency resources to each transmission path of the direct communication interface in the case of overlapping transmission by PDCP, and Based on the first information, after determining the currently available SL frequency resource set, the SL frequency resources in the SL frequency resource set may be randomly allocated in groups equal to the number of transmission paths in the direct communication interface in the case of overlapping transmission by PDCP, and the SL frequency resources of each group may be designated as the SL frequency resource set corresponding to the next transmission on the direct communication interface in the case of overlapping transmission by PDCP.

[0126] The content of the aforementioned Information 1 may be, but is not limited to, any one of the following or a combination thereof. The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a transmitting terminal device and a receiving terminal device. CBR or CO in each direct communication interface frequency resource of the transmitting terminal equipment, and The direct communication interface frequency resources of the transmitting terminal equipment may be SL-CSI, SL-RSRP, or SD-RSRP.

[0127] In step S12, the transmitting terminal in the direct communication interface determines the transmission resources to be specifically used on each transmission path of the direct communication interface in the case of duplicate transmission by PDCP.

[0128] The number of direct communication interface frequency resources in the direct communication interface frequency resource set determined in step S12 may be multiple, and when the terminal self-selection resource allocation mode is used, the transmitting terminal in the direct communication interface must uniquely select one direct communication interface frequency resource from each of the direct communication interface frequency resource sets, and the specific selection method may be as follows: For each logic channel corresponding to the transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP, one target direct communication interface frequency resource is selected from the direct communication interface frequency resource set corresponding to the transmission path, and data transmission in the transmission path is performed using the selected single direct communication interface frequency resource.

[0129] Application scenario 2: When the transmitting terminal determines the available direct communication interface frequency resource set for each transmission path and the LCID corresponding to each transmission path in the case of overlapping transmission by PDCP, As shown in Figure 4, the process mainly includes the following:

[0130] In step S21, the transmitting terminal in the direct communication interface receives the second instruction information transmitted from the receiving terminal in the direct communication interface via the direct communication interface.

[0131] The transmitting terminal in the direct communication interface receives second instruction information transmitted from the receiving terminal in the direct communication interface via the direct communication interface, wherein the second instruction information is intended to assist the transmitting terminal in the direct communication interface in determining the available direct communication interface frequency resource set of the direct communication interface in the case of overlapping transmission by PDCP.

[0132] The content of the second instruction information may be one or more of the following, but is not limited to them. CBR or CO in each direct communication interface frequency resource of the receiving terminal equipment, Sidelink parameters in each direct communication interface frequency resource of the receiving terminal equipment, A set of sidelink parameter frequencies and resources corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the receiving terminal equipment, and This may also be a set of available sidelink parameter frequency resources for the direct communication interface in the case of duplication due to PDCP, which is desirable for the receiving terminal equipment.

[0133] In step S22, the transmitting terminal on the direct communication interface determines the direct communication interface frequency resource set and LCID for the direct communication interface in the case of duplicate transmission by PDCP.

[0134] In this embodiment, the transmitting terminal in the direct communication interface determines the LCID corresponding to each transmission path of the direct communication interface radio bearer (SLRB) and the direct communication interface frequency resource set corresponding to each transmission path in the case of overlapping transmission by PDCP.

[0135] More specifically, how the transmitting terminal in the direct communication interface determines the LCID corresponding to each transmission path of the direct communication interface radio bearer (SLRB) and the direct communication interface frequency resource set corresponding to each transmission path in the case of overlapping transmission by PDCP is determined by the implementation of the transmitting terminal in the direct communication interface. An example is given below.

[0136] The method for determining the LCID may be any of the following methods, but is not limited to them. In a direct communication interface, the transmitting terminal may randomly select the same number of LCIDs from the currently available unoccupied LCIDs as the number of transmission paths in the direct communication interface in the case of duplicate transmission by PDCP, and may also assign each of the selected LCIDs to the respective transmission path. In a direct communication interface, the transmitting terminal may randomly select one unoccupied LCID from a first LCID set to be the LCID for one transmission path of the direct communication interface in the case of overlapping transmission by PDCP, and then determine the LCIDs corresponding to other transmission paths according to the predetermined relationship between the said LCID and the LCIDs of different transmission paths of the direct communication interface in the case of overlapping transmission by PDCP.

[0137] The first LCID set includes available LCIDs for the direct communication interfaces in the first and second terminal devices.

[0138] The method for determining the direct communication interface frequency resource set corresponding to each of the aforementioned transmission paths may be any of the following methods, but is not limited to them. A method for determining the currently available SL frequency resource set based on the first information, sorting the SL frequency resources in the SL frequency resource set in descending order of CBR or CO, and then sequentially allocating the SL frequency resources to each transmission path of the direct communication interface in the case of overlapping transmission by PDCP, and Based on the first information, after determining the currently available SL frequency resource set, the SL frequency resources in the SL frequency resource set may be randomly allocated in groups equal to the number of transmission paths in the direct communication interface in the case of overlapping transmission by PDCP, and the SL frequency resources of each group may be designated as the SL frequency resource set corresponding to the next transmission on the direct communication interface in the case of overlapping transmission by PDCP.

[0139] Here, the aforementioned first information may include, but is not limited to, one or more of the following: The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a transmitting terminal device and a receiving terminal device. CBR or CO in each direct communication interface frequency resource of the transmitting terminal equipment, SL-CSI, SL-RSRP, or SD-RSRP in each direct communication interface frequency resource of the transmitting terminal equipment. A direct communication interface frequency resource set corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for transmitting terminal equipment. The desired set of available direct communication interface frequency resources for the direct communication interface in the case of duplicate transmission by PDCP for transmitting terminal equipment, and This could also be second instruction information received from the receiving terminal.

[0140] In step S23, the transmitting terminal in the direct communication interface determines the transmission resources to be specifically used for each transmission path in the direct communication interface in the case of duplicate transmission by PDCP.

[0141] The number of direct communication interface frequency resources in the direct communication interface frequency resource set determined in step S22 may be multiple, and when the terminal self-selection resource allocation mode is used, the transmitting terminal in the direct communication interface must uniquely select one direct communication interface frequency resource from each of the direct communication interface frequency resource sets, and the specific selection method may be as follows: For each logic channel corresponding to the transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP, one target direct communication interface frequency resource is selected from the direct communication interface frequency resource set corresponding to the transmission path, and data transmission in the transmission path is performed using the selected single direct communication interface frequency resource.

[0142] Application scenario 3: When a network device providing services to a transmitting terminal determines the available direct communication interface frequency resource set for each transmission path and the LCID corresponding to each transmission path in the case of duplicate transmission by PDCP, As shown in Figure 5, the process mainly includes the following:

[0143] In step S31, the transmitting terminal in the direct communication interface receives the second instruction information transmitted from the receiving terminal in the direct communication interface via the direct communication interface.

[0144] The transmitting terminal in the direct communication interface receives second instruction information transmitted from the receiving terminal in the direct communication interface via the direct communication interface, wherein the second instruction information is intended to assist the network equipment corresponding to the transmitting terminal in the direct communication interface in determining the available direct communication interface frequency resource set of the direct communication interface in the case of duplicate transmission by PDCP.

[0145] The content of the second instruction information may be one or more of the following, but is not limited to them. CBR or CO in each direct communication interface frequency resource of the receiving terminal equipment, Sidelink parameters in each direct communication interface frequency resource of the receiving terminal equipment, A set of sidelink parameter frequencies and resources corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the receiving terminal equipment, and This may also be a set of available sidelink parameter frequency resources for the direct communication interface in the case of duplication due to PDCP, which is desirable for the receiving terminal equipment.

[0146] In step S32, the transmitting terminal in the direct communication interface transmits the first information and the second information to the network equipment that provides services to the transmitting terminal in the direct communication interface.

[0147] Here, the aforementioned first information may include, but is not limited to, one or more of the following: The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a transmitting terminal device and a receiving terminal device. CBR or CO in each direct communication interface frequency resource of the transmitting terminal equipment, SL-CSI, SL-RSRP, or SD-RSRP in each direct communication interface frequency resource of the transmitting terminal equipment. A direct communication interface frequency resource set corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for transmitting terminal equipment. The desired set of available direct communication interface frequency resources for the direct communication interface in the case of duplicate transmission by PDCP for transmitting terminal equipment, and This could also be second instruction information received from the receiving terminal.

[0148] As the aforementioned first information, Sidelink UE Information or UE Assistance Information or a novel Uu interface RRC signature ring in related technologies may be used.

[0149] Here, the second piece of information may include, but is not limited to, one or more of the following: In a unicast connection between a transmitting terminal device and a receiving terminal device, the available LCIDs of the transmitting terminal device are as follows: LCID for duplicate transmission via PDCP on the direct communication interface recommended for the transmitting terminal device in a unicast connection between the transmitting terminal device and the receiving terminal device, and This may also be an LCID reserved for duplicate transmission via PDCP on the direct communication interface from the transmitting terminal device in a unicast connection between a transmitting terminal device and a receiving terminal device.

[0150] In step S33, the network equipment providing services to the transmitting terminal in the direct communication interface determines the available direct communication interface frequency resource set for each transmission path of the direct communication interface in the case of duplicate transmission by PDCP, and the LCID corresponding to each transmission path.

[0151] Based on the second information, the network device determines the LCID corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP, and based on the first information, determines the direct communication interface frequency resource set corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP.

[0152] Here, the method for determining the LCID may be any of the following methods, but is not limited to them. In a direct communication interface, the transmitting terminal may randomly select the same number of LCIDs from the currently available unoccupied LCIDs as the number of transmission paths in the direct communication interface in the case of duplicate transmission by PDCP, and may also assign each of the selected LCIDs to the respective transmission path. In a direct communication interface, the transmitting terminal may randomly select one unoccupied LCID from a first LCID set to be the LCID for one transmission path of the direct communication interface in the case of overlapping transmission by PDCP, and then determine the LCIDs corresponding to other transmission paths according to the predetermined relationship between the said LCID and the LCIDs of different transmission paths of the direct communication interface in the case of overlapping transmission by PDCP.

[0153] The first LCID set includes available LCIDs for the direct communication interfaces in the first and second terminal devices.

[0154] The method for determining the direct communication interface frequency resource set corresponding to each of the aforementioned transmission paths may be any of the following methods, but is not limited to them. A method for determining the currently available SL frequency resource set based on the first information, sorting the SL frequency resources in the SL frequency resource set in descending order of CBR or CO, and then sequentially allocating the SL frequency resources to each transmission path of the direct communication interface in the case of overlapping transmission by PDCP, and Based on the first information, after determining the currently available SL frequency resource set, the SL frequency resources in the SL frequency resource set may be randomly allocated in groups equal to the number of transmission paths in the direct communication interface in the case of overlapping transmission by PDCP, and the SL frequency resources of each group may be designated as the SL frequency resource set corresponding to the next transmission on the direct communication interface in the case of overlapping transmission by PDCP.

[0155] Furthermore, when a network-scheduled resource allocation mode is used, the transmitting terminal, after determining the direct communication interface frequency resource set corresponding to each transmission path, further selects a single direct communication interface frequency resource for each transmission path and allocates resources to the SLRB in the selected single direct communication interface frequency resource.

[0156] In step S34, the network device sends to the transmitting terminal the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP, and the LCID corresponding to each transmission path.

[0157] In step S35, the transmitting terminal in the direct communication interface determines the transmission resources to be specifically used for each transmission path in the direct communication interface in the case of duplicate transmission by PDCP.

[0158] The number of direct communication interface frequency resources in the direct communication interface frequency resource set determined in step S22 may be multiple, and when the terminal self-selection resource allocation mode is used, the transmitting terminal in the direct communication interface must uniquely select one direct communication interface frequency resource from each of the direct communication interface frequency resource sets, and the specific selection method may be as follows: For each logic channel corresponding to the transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP, one target direct communication interface frequency resource is selected from the direct communication interface frequency resource set corresponding to the transmission path, and data transmission in the transmission path is performed using the selected single direct communication interface frequency resource.

[0159] Application scenario 4: When a network device providing services to a transmitting terminal determines the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP, and the transmitting terminal determines the LCID corresponding to each transmission path in the case of duplicate transmission by PDCP, As shown in Figure 6, the process mainly includes the following:

[0160] In step S41, the transmitting terminal in the direct communication interface receives the second instruction information transmitted from the receiving terminal in the direct communication interface via the direct communication interface.

[0161] The transmitting terminal in the direct communication interface receives second instruction information transmitted from the receiving terminal in the direct communication interface via the direct communication interface, wherein the second instruction information is intended to assist the transmitting terminal in the direct communication interface or the network equipment corresponding to the transmitting terminal in the direct communication interface in determining the available direct communication interface frequency resource set in the case of duplicate transmission by PDCP.

[0162] The content of the second instruction information may be one or more of the following, but is not limited to them. CBR or CO in each direct communication interface frequency resource of the receiving terminal equipment, Sidelink parameters in each direct communication interface frequency resource of the receiving terminal equipment, A set of sidelink parameter frequencies and resources corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the receiving terminal equipment, and This may also be a set of available sidelink parameter frequency resources for the direct communication interface in the case of duplication due to PDCP, which is desirable for the receiving terminal equipment.

[0163] In step S42, the transmitting terminal in the direct communication interface transmits first information to the network equipment that provides services to the transmitting terminal in the direct communication interface.

[0164] Here, the aforementioned first information may include, but is not limited to, one or more of the following: The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a transmitting terminal device and a receiving terminal device. CBR or CO in each direct communication interface frequency resource of the transmitting terminal equipment, SL-CSI, SL-RSRP, or SD-RSRP in each direct communication interface frequency resource of the transmitting terminal equipment. A direct communication interface frequency resource set corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for transmitting terminal equipment. The desired set of available direct communication interface frequency resources for the direct communication interface in the case of duplicate transmission by PDCP for transmitting terminal equipment, and This could also be second instruction information received from the receiving terminal.

[0165] As the aforementioned first information, Sidelink UE Information or UE Assistance Information or a novel Uu interface RRC signature ring in related technologies may be used.

[0166] In step S43, the network equipment providing services to the transmitting terminal in the direct communication interface determines the transmission resources specifically used for each transmission path of the direct communication interface in the case of duplicate transmission by PDCP.

[0167] Based on the first information, the network device determines the direct communication interface frequency resource set corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP.

[0168] The method for determining the direct communication interface frequency resource set corresponding to each of the aforementioned transmission paths may be any of the following methods, but is not limited to them. A method for determining the currently available SL frequency resource set based on the first information, sorting the SL frequency resources in the SL frequency resource set in descending order of CBR or CO, and then sequentially allocating the SL frequency resources to each transmission path of the direct communication interface in the case of overlapping transmission by PDCP, and Based on the first information, after determining the currently available SL frequency resource set, the SL frequency resources in the SL frequency resource set may be randomly allocated in groups equal to the number of transmission paths in the direct communication interface in the case of overlapping transmission by PDCP, and the SL frequency resources of each group may be designated as the SL frequency resource set corresponding to the next transmission on the direct communication interface in the case of overlapping transmission by PDCP.

[0169] Furthermore, when a network-scheduled resource allocation mode is used, the transmitting terminal, after determining the direct communication interface frequency resource set corresponding to each transmission path, further selects a single direct communication interface frequency resource for each transmission path and allocates resources to the SLRB in the selected single direct communication interface frequency resource.

[0170] In step S44, the transmitting terminal determines the LCID corresponding to each transmission path of the direct communication interface in the case of duplicate transmission by PDCP.

[0171] Here, the method for determining the LCID may be any of the following methods, but is not limited to them. In a direct communication interface, the transmitting terminal may randomly select the same number of LCIDs from the currently available unoccupied LCIDs as the number of transmission paths in the direct communication interface in the case of duplicate transmission by PDCP, and may also assign each of the selected LCIDs to the respective transmission path. In a direct communication interface, the transmitting terminal may randomly select one unoccupied LCID from a first LCID set to be the LCID for one transmission path of the direct communication interface in the case of overlapping transmission by PDCP, and then determine the LCIDs corresponding to other transmission paths according to the predetermined relationship between the said LCID and the LCIDs of different transmission paths of the direct communication interface in the case of overlapping transmission by PDCP.

[0172] The first LCID set includes available LCIDs for the direct communication interfaces in the first and second terminal devices.

[0173] In step S45, the network device sends to the transmitting terminal a set of available direct communication interface frequency resources for each transmission path of the direct communication interface in the case of duplicate transmission by PDCP.

[0174] In step S46, the transmitting terminal in the direct communication interface determines the transmission resources to be specifically used for each transmission path in the direct communication interface in the case of duplicate transmission by PDCP.

[0175] After receiving configuration information, the transmitting terminal in the direct communication interface associates the determined LCID with the direct communication interface frequency resource or frequency resource set used for each transmission path.

[0176] The number of direct communication interface frequency resources in the direct communication interface frequency resource set determined in step S43 may be multiple, and when the terminal self-selection resource allocation mode is used, the transmitting terminal in the direct communication interface must uniquely select one direct communication interface frequency resource from each of the direct communication interface frequency resource sets, and the specific selection method may be as follows: For each logic channel corresponding to the transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP, one target direct communication interface frequency resource is selected from the direct communication interface frequency resource set corresponding to the transmission path, and data transmission in the transmission path is performed using the selected single direct communication interface frequency resource.

[0177] As shown in Figure 7, an embodiment of the present disclosure provides a frequency resource acquisition device 700 applied to a first terminal device, the device 700 is Based on the first information, the system includes a first acquisition unit 701 for obtaining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by the Packet Data Convergence Protocol (PDCP).

[0178] Here, the first piece of information in this article is: The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device. First instruction information, which is instruction information for direct communication interface frequency resources determined by the first terminal device, and The second instruction information includes at least one of the instruction information for a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0179] Selectively, the first acquisition unit 701, The first information is transmitted to a network device that provides services to a first terminal device, and the network device receives the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP, wherein the direct communication interface frequency resource set is determined by the network device based on the first information, or Based on the first piece of information, the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission using PDCP is determined.

[0180] Selectively, the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP includes the direct communication interface frequency resource set corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP.

[0181] Selectively, the number of direct communication interface frequency resource sets is the same as the number of transmission paths in the case of duplicate transmission by PDCP.

[0182] Selectively, the direct communication interface frequency resources in the direct communication interface frequency resource set are: Direct communication interface carrier, and / or Includes the direct communication interface bandwidth portion (BWP).

[0183] Selectively, the first acquisition unit 701, The first information is transmitted to the network device by at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0184] Selectively, the apparatus, Based on the second piece of information, the system further includes a second acquisition unit for obtaining the logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP.

[0185] The second piece of information mentioned above is: The available LCDs of the first terminal device in a unicast connection between the first terminal device and the second terminal device. LCD for redundant transmission via PDCP on the direct communication interface recommended for the first terminal device in a unicast connection between the first and second terminal devices. The LCID includes at least one of the LCIDs reserved for duplicate transmission by PDCP on the direct communication interface from the first terminal device in a unicast connection between the first terminal device and the second terminal device.

[0186] Selectively, the second acquisition unit, The second information is transmitted to a network device that provides services to the first terminal device, and the LCID corresponding to each transmission path of the SLRB transmitted from the network device in the case of duplicate transmission by PDCP is received, wherein the LCID is determined by the network device that provides services to the first terminal device based on the second information, or Based on the second piece of information, the LCID corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP is determined.

[0187] Selectively, the second acquisition unit, From the available LCIDs, N LCIDs are randomly selected, each of the N LCIDs is assigned to a transmission path, each LCID corresponds one-to-one with a transmission path, and N is equal to the number of transmission paths of the direct communication interface in the case of duplicate transmission by PDCP, or A first LCID is randomly selected from a first LCID set to be the LCID for one transmission path of the direct communication interface in the case of overlapping transmission by PDCP, and the LCIDs for the other transmission paths of the direct communication interface in the case of overlapping transmission by PDCP are determined according to the relationship between the first LCID and the LCIDs of the other transmission paths of the direct communication interface in the case of overlapping transmission by PDCP, wherein the first LCID is an available LCID, and the first LCID set includes the available LCIDs for the direct communication interfaces of the first terminal device and the second terminal device.

[0188] Selectively, the second acquisition unit, The second information is transmitted to the network device by at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0189] Selectively, the apparatus, The system further comprises a first transmitting unit for transmitting to a second terminal device the available direct communication interface frequency resource set for each transmission path in the case of PDCP-based duplicate transmission, through PDCP-based duplicate transmission setting signaling or PDCP-based duplicate transmission activation signaling on the direct communication interface.

[0190] Selectively, the PDCP-based activation signaling for duplicate transmission in the direct communication interface includes at least one of RRC signaling, media access control elements (MAC CE), or physical layer signaling.

[0191] Selectively, the first execution unit determines, based on the first information, the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by the packet data convergence protocol PDCP, and then the device When the first terminal device uses the network configuration resource allocation mode, it further comprises a second transmitting unit for transmitting the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP to the network device.

[0192] Selectively, the direct communication interface frequency resource set includes one or more direct communication interface frequency resources.

[0193] Selectively, if the direct communication interface frequency resource set includes at least two frequency resources, the device shall In the case of duplicate transmission by PDCP, the system further includes a selection unit for selecting one target direct communication interface frequency resource from the direct communication interface frequency resource set corresponding to each transmission path of a direct communication interface radio bearer (SLRB) for the logic channel corresponding to the said transmission path, and transmitting data.

[0194] Selectively, the first instruction information is Channel occupancy rate (CBR) or channel occupancy (CO) in each direct communication interface frequency resource of the first terminal equipment, Direct communication interface parameters in each direct communication interface frequency resource of the first terminal equipment, the direct communication interface parameters including direct communication interface channel status information (SL-CSI), direct communication interface reference signal received power (SL-RSRP), or direct communication interface discovery reference signal received power (SD-RSRP), A set of direct communication interface frequency resources corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the first terminal device, and The first terminal device includes at least one of the available direct communication interface frequency resource sets for the direct communication interface in the case of duplicate transmission by PDCP.

[0195] Selectively, the second instruction information is CBR or CO in each direct communication interface frequency resource of the second terminal equipment, Side link parameters in each direct communication interface frequency resource of the second terminal equipment, A sidelink parameter frequency resource set corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the second terminal device, and The second terminal device includes at least one of the available sidelink parameter frequency resource sets for the direct communication interface in the case of duplication due to PDCP.

[0196] Furthermore, this apparatus embodiment corresponds one-to-one with the method embodiment described above, and all implementation methods in the method embodiment can be applied to this apparatus embodiment, and similar technical effects can be obtained.

[0197] The unit divisions in the embodiments of this disclosure are illustrative and represent only the division of logic functions. Different division methods may be used in actual implementation. Furthermore, each functional unit in each embodiment of this disclosure may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The combined units may be implemented in hardware form or in the form of software functional units.

[0198] The combined units described above may be implemented in the form of a software functional unit and, if sold or used as an independent product, may be stored in a single processor-readable storage medium. With this understanding, the proposed techniques of this disclosure may, substantially, in other words, be represented in the form of a software product, either in part or in whole, of the contributions to the relevant technology. Such computer software product may be stored in a single storage medium and contain a set of commands causing a single computer device (which may be a personal computer, server, or network device, etc.) to perform some of the steps in the methods described in each embodiment of this disclosure. The storage mediums described above include various media capable of storing program code, such as U disks, removable disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0199] As shown in Figure 8, embodiments of the present disclosure further provide a terminal device, the first terminal device comprising a processor 800, a transceiver 810, a memory 820, and a program stored in the memory 820 and run by the processor 800, wherein the transceiver 810 is connected to the processor 800 and the memory 820 by a bus interface, and the processor 800 reads the program in the memory, Based on the first piece of information, this process is intended to retrieve the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission using the Packet Data Convergence Protocol (PDCP).

[0200] Here, the first piece of information in this article is: The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device. First instruction information, which is instruction information for direct communication interface frequency resources determined by the first terminal device, and The second instruction information includes at least one of the instruction information for a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0201] The transceiver 810 is used to transmit and receive data under the control of the processor 800.

[0202] In Figure 8, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors, including processor 800, are connected to various memory circuits, including memory 820. The bus architecture can further connect various other circuits, such as peripheral devices, voltage regulators, and power management circuits. These are publicly known in the art, and therefore, further explanation is omitted in this specification. The bus interface provides an interface. The transceiver 810 may consist of multiple elements, namely a transmitter and a receiver, and provides a unit for communicating with various other devices over a transmission medium. These transmission media include wireless channels, wired channels, and optical fiber cables. For different user devices, the user interface 830 may further be an interface that allows both external and internal connections to necessary equipment. The connected equipment may include, but is not limited to, keypads, displays, speakers, microphones, and joysticks.

[0203] The processor 800 is responsible for managing the bus architecture and performing general processing, while the memory 820 can store data used to perform operations by the processor 800.

[0204] Selectively, the processor 800 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). The processor may also employ a multi-core architecture.

[0205] The processor causes the computer program stored in memory to execute one of the methods provided by the embodiments of this disclosure in accordance with the resulting executable commands. The processor and memory may be configured to be physically separated.

[0206] Selectively, the processor reads a computer program from the memory, An operation to transmit the first information to a network device that provides services to a first terminal device, and to receive the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP, wherein the direct communication interface frequency resource set is determined by the network device based on the first information, or Based on the first information, this further involves performing the operation to determine the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP.

[0207] Selectively, the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP includes the direct communication interface frequency resource set corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP.

[0208] Optionally, the number of the direct communication interface frequency resource sets is the same as the number of transmission paths in the case of duplicate transmission by PDCP.

[0209] Optionally, the direct communication interface frequency resources in the direct communication interface frequency resource set include a direct communication interface carrier wave, and / or a direct communication interface bandwidth part (BWP).

[0210] Optionally, the processor reads the computer program in the memory to perform an operation of transmitting the first information to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0211] Optionally, the processor reads the computer program in the memory to further perform an operation of obtaining a logic channel identifier (LCID) corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP based on second information.

[0212] Here, the second information includes at least one of available LCIDs of a first terminal device in a unicast connection between the first terminal device and the second terminal device, LCIDs recommended for duplicate transmission by PDCP on a direct communication interface for the first terminal device in a unicast connection between the first terminal device and the second terminal device, and LCIDs reserved for duplicate transmission by PDCP on a direct communication interface from the first terminal device in a unicast connection between the first terminal device and the second terminal device.

[0213] Selectively, the processor reads a computer program from the memory, An operation to transmit the second information to a network device that provides services to a first terminal device, and to receive an LCID corresponding to each transmission path of the SLRB transmitted from the network device in the case of duplicate transmission by PDCP, wherein the LCID is determined by the network device that provides services to the first terminal device based on the second information, or Based on the second piece of information, this is used to perform the operation of determining the LCID corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP.

[0214] Selectively, the processor reads a computer program from the memory, From the available LCIDs, randomly select N LCIDs, assign each of the N LCIDs to a corresponding transmission path, and perform an operation where each LCID corresponds one-to-one with a transmission path, and N is equal to the number of transmission paths in the direct communication interface in the case of duplicate transmission by PDCP, or The purpose is to perform operations such as randomly selecting a first LCID from a first LCID set to be the LCID for one transmission path of the direct communication interface in the case of overlapping transmission by PDCP, determining the LCIDs for other transmission paths of the direct communication interface in the case of overlapping transmission by PDCP according to the relationship between the first LCID and the LCIDs of different transmission paths, and confirming that the first LCID is an available LCID and that the first LCID set includes available LCIDs for the direct communication interfaces of the first and second terminal devices.

[0215] Selectively, the processor reads a computer program from the memory, This further involves performing an operation to transmit the second information to the network device by at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0216] Selectively, the processor reads a computer program from the memory, This further performs an operation to transmit to a second terminal device the available direct communication interface frequency resource set for each transmission path in the case of PDCP-based duplicate transmission, by setting up or activating PDCP-based duplicate transmission on the direct communication interface.

[0217] Selectively, the PDCP-based activation signaling for duplicate transmission in the direct communication interface includes at least one of RRC signaling, media access control elements (MAC CE), or physical layer signaling.

[0218] Selectively, the processor reads a computer program from the memory, When the first terminal device uses the network configuration resource allocation mode, it further performs the operation of sending the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP to the network device.

[0219] Selectively, the direct communication interface frequency resource set includes one or more direct communication interface frequency resources.

[0220] Selectively, if the direct communication interface frequency resource set includes at least two frequency resources, the processor reads the computer program in the memory. This further performs the operation of selecting one target direct communication interface frequency resource from the direct communication interface frequency resource set corresponding to the transmission path for each logic channel corresponding to the transmission path of a direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP, and transmitting data.

[0221] Selectively, the first instruction information is Channel occupancy rate (CBR) or channel occupancy (CO) in each direct communication interface frequency resource of the first terminal equipment, Direct communication interface parameters in each direct communication interface frequency resource of the first terminal equipment, the direct communication interface parameters including direct communication interface channel status information (SL-CSI), direct communication interface reference signal received power (SL-RSRP), or direct communication interface discovery reference signal received power (SD-RSRP), A set of direct communication interface frequency resources corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the first terminal device, and The first terminal device includes at least one of the available direct communication interface frequency resource sets for the direct communication interface in the case of duplicate transmission by PDCP.

[0222] Selectively, the second instruction information is CBR or CO in each direct communication interface frequency resource of the second terminal equipment, Side link parameters in each direct communication interface frequency resource of the second terminal equipment, A sidelink parameter frequency resource set corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the second terminal device, and It includes at least one of the available sidelink parameter frequency resource sets of the direct communication interface in the case of duplication by PDCP, which is desired for the second terminal device.

[0223] In addition, the terminal device provided by the embodiments of the present disclosure can even implement all the methods and steps realized by the above method embodiments, and can also obtain similar technical effects. Here, specific descriptions of the same parts and beneficial effects in the method embodiments in this embodiment are omitted.

[0224] Embodiments of the present disclosure further provide a computer-readable storage medium storing a computer program, which, when executed by a processor, realizes the steps of a method for acquiring frequency resources applied to a first terminal device. The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (such as floppy disks, hard disks, magnetic cassettes, magneto-optical (MO) disks, etc.), optical memory (such as Compact Disc (CD), Digital Versatile Disc (DVD), Blu-ray Disc (BD), High-Definition Versatile Disc (HVD), etc.), and semiconductor memory (such as ROM, Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read Only Memory (EEPROM), non-volatile memory (NANDFLASH), Solid State Disk (SSD), etc.).

[0225] As shown in Figure 9, an embodiment of the present disclosure provides a frequency resource determination device 900 for application in network equipment, the device, Based on first information, the system includes a first determination unit 901 for determining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by the Packet Data Convergence Protocol (PDCP) for a first terminal device.

[0226] Here, the first piece of information in this article is: The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device. First instruction information, which is instruction information for direct communication interface frequency resources determined by the first terminal device, and The second instruction information includes at least one of the instruction information for a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0227] Selectively, the apparatus, The system further comprises a first receiving unit that receives first information transmitted from a first terminal device.

[0228] Selectively, the first receiving unit, This is for receiving first information transmitted from a first terminal device by at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0229] Selectively, the apparatus, The system further comprises a second determination unit for determining the logic channel identifier (LCID) corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP, based on the second information.

[0230] Here, the second piece of information is: The available LCDs of the first terminal device in a unicast connection between the first terminal device and the second terminal device. LCID for redundant transmission via PDCP on the direct communication interface recommended for the first terminal device in a unicast connection between the first and second terminal devices, and The LCID includes at least one of the LCIDs reserved for duplicate transmission by PDCP on the direct communication interface from the first terminal device in a unicast connection between the first terminal device and the second terminal device.

[0231] Selectively, the second decision unit, From the available LCIDs, N LCIDs are randomly selected, each of the N LCIDs is assigned to a transmission path, each LCID corresponds one-to-one with a transmission path, and N is equal to the number of transmission paths of the direct communication interface in the case of duplicate transmission by PDCP, or The purpose is to perform operations such as randomly selecting a first LCID from a first LCID set to be the LCID for one transmission path of the direct communication interface in the case of overlapping transmission by PDCP, determining the LCIDs for other transmission paths of the direct communication interface in the case of overlapping transmission by PDCP according to the relationship between the first LCID and the LCIDs of different transmission paths, and confirming that the first LCID is an available LCID and that the first LCID set includes available LCIDs for the direct communication interfaces of the first and second terminal devices.

[0232] Selectively, the apparatus, The system further includes a second receiving unit that receives second information transmitted from a first terminal device. Selectively, the second receiving unit, The system receives second information transmitted from a first terminal device via at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0233] Selectively, the apparatus, The system further includes a third transmission unit for transmitting logic channel identifiers (LCIDs) corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP to a first terminal device.

[0234] Selectively, the apparatus, The system further comprises a fourth transmitting unit for transmitting to a first terminal device the available direct communication interface frequency resource set for each transmission path in the case of PDCP-based duplicate transmission, by setting up or activating PDCP-based duplicate transmission on the direct communication interface.

[0235] Selectively, the PDCP-based activation signaling for duplicate transmission in the direct communication interface includes at least one of RRC signaling, media access control elements (MACCE), or physical layer signaling.

[0236] Selectively, the first instruction information is Channel occupancy rate (CBR) or channel occupancy (CO) in each direct communication interface frequency resource of the first terminal equipment, Direct communication interface parameters in each direct communication interface frequency resource of the first terminal equipment, the direct communication interface parameters including direct communication interface channel status information (SL-CSI), direct communication interface reference signal received power (SL-RSRP), or direct communication interface discovery reference signal received power (SD-RSRP), A set of direct communication interface frequency resources corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the first terminal device, and The first terminal device includes at least one of the available direct communication interface frequency resource sets for the direct communication interface in the case of duplicate transmission by PDCP.

[0237] Selectively, the second instruction information is CBR or CO in each direct communication interface frequency resource of the second terminal equipment, Side link parameters in each direct communication interface frequency resource of the second terminal equipment, A sidelink parameter frequency resource set corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the second terminal device, and The second terminal device includes at least one of the available sidelink parameter frequency resource sets for the direct communication interface in the case of duplication due to PDCP.

[0238] Selectively, the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP includes the direct communication interface frequency resource set corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP.

[0239] Selectively, the number of direct communication interface frequency resource sets is the same as the number of transmission paths in the case of duplicate transmission by PDCP.

[0240] Selectively, the direct communication interface frequency resources in the direct communication interface frequency resource set are: Direct communication interface carrier, and / or Includes the direct communication interface bandwidth portion (BWP).

[0241] Furthermore, this apparatus embodiment corresponds one-to-one with the method embodiment described above, and all implementation methods in the method embodiment can be applied to this apparatus embodiment, and similar technical effects can be obtained.

[0242] The unit divisions in the embodiments of this disclosure are illustrative and represent only the division of logic functions. Different division methods may be used in actual implementation. Furthermore, each functional unit in each embodiment of this disclosure may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The combined units may be implemented in hardware form or in the form of software functional units.

[0243] The combined units described above may be implemented in the form of a software functional unit and, if sold or used as an independent product, may be stored in a single processor-readable storage medium. With this understanding, the proposed techniques of this disclosure may, substantially, in other words, be represented in the form of a software product, either in part or in whole, of the contributions to the relevant technology. Such computer software product may be stored in a single storage medium and contain a set of commands causing a single computer device (which may be a personal computer, server, or network device, etc.) to perform some of the steps in the methods described in each embodiment of this disclosure. The storage mediums described above include various media capable of storing program code, such as U disks, removable disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0244] As shown in Figure 10, embodiments of the present disclosure further provide a network device comprising a processor 1000, a transceiver 1010, a memory 1020, and a program stored in the memory 1020 and run by the processor 1000, wherein the transceiver 1010 is connected to the processor 1000 and the memory 1020 by a bus interface, and the processor 1000 reads the program in the memory, Based on the first information, this process is for determining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission using the Packet Data Convergence Protocol (PDCP) for a first terminal device.

[0245] Here, the first piece of information in this article is: The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device. First instruction information, which is instruction information for direct communication interface frequency resources determined by the first terminal device, and The second instruction information includes at least one of the instruction information for a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0246] The transceiver 1010 is used to transmit and receive data under the control of the processor 1000.

[0247] In Figure 10, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors, including processor 1000, are connected to various memory circuits, including memory 1020. The bus architecture can further connect various other circuits, such as peripheral devices, voltage regulators, and power management circuits. These are publicly known in the art, and therefore, further explanation is omitted in this specification. The bus interface provides an interface. The transceiver 1010 may consist of multiple elements, i.e., a transmitter and a receiver, and provides a unit for communicating with various other devices over a transmission medium. These transmission media include wireless channels, wired channels, and optical fiber cables. For different user devices, the user interface 1030 may further be an interface that allows both external and internal connections to necessary devices. The connected devices may include, but are not limited to, keypads, displays, speakers, microphones, and joysticks.

[0248] Processor 1000 is responsible for managing the bus architecture and performing general processing, while memory 1020 can store data used when processor 1000 is operating.

[0249] Selectively, the processor 1000 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). The processor may also employ a multi-core architecture.

[0250] The processor causes the computer program stored in memory to execute one of the methods provided by the embodiments of this disclosure in accordance with the resulting executable commands. The processor and memory may be configured to be physically separated.

[0251] Selectively, the processor reads a computer program from the memory, This is for further performing the operation of receiving first information transmitted from the first terminal device by the transceiver.

[0252] Selectively, the processor reads a computer program from the memory, The transceiver is for performing an operation to receive first information transmitted from a first terminal device by at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0253] Selectively, the processor reads a computer program from the memory, Based on the second piece of information, this further involves determining the logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP.

[0254] Here, the second piece of information is: The available LCDs of the first terminal device in a unicast connection between the first terminal device and the second terminal device. LCD for redundant transmission via PDCP on the direct communication interface recommended for the first terminal device in a unicast connection between the first and second terminal devices. The LCID includes at least one of the LCIDs reserved for duplicate transmission by PDCP on the direct communication interface from the first terminal device in a unicast connection between the first terminal device and the second terminal device.

[0255] Selectively, the processor reads a computer program from the memory, From the available LCIDs, randomly select N LCIDs, assign each of the N LCIDs to a corresponding transmission path, and perform an operation where each LCID corresponds one-to-one with a transmission path, and N is equal to the number of transmission paths in the direct communication interface in the case of duplicate transmission by PDCP, or The operation involves randomly selecting a first LCID from a first LCID set to be the LCID for one transmission path of the direct communication interface in the case of overlapping transmission by PDCP, determining the LCIDs for other transmission paths of the direct communication interface in the case of overlapping transmission by PDCP according to the relationship between the first LCID and the LCIDs of different transmission paths, and further performing operations such as confirming that the first LCID is an available LCID and that the first LCID set includes available LCIDs for the direct communication interfaces of the first and second terminal devices.

[0256] Selectively, the processor reads a computer program from the memory, This is for further performing the operation of receiving the second piece of information transmitted from the first terminal device.

[0257] Selectively, the processor reads a computer program from the memory, The transceiver is for performing an operation to receive second information transmitted from a first terminal device by at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0258] Selectively, the processor reads a computer program from the memory, The transceiver further performs the operation of transmitting the logic channel identifier (LCID) corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP to the first terminal device.

[0259] Selectively, the processor reads a computer program from the memory, The transceiver further performs the operation of transmitting to a first terminal device the available direct communication interface frequency resource set for each transmission path in the case of PDCP-based duplicate transmission by setting signaling for duplicate transmission by PDCP on the direct communication interface or by activating signaling for duplicate transmission by PDCP on the direct communication interface.

[0260] Selectively, the PDCP-based activation signaling for duplicate transmission in the direct communication interface includes at least one of RRC signaling, media access control elements (MACCE), or physical layer signaling.

[0261] Selectively, the first instruction information is Channel occupancy rate (CBR) or channel occupancy (CO) in each direct communication interface frequency resource of the first terminal equipment, Direct communication interface parameters in each direct communication interface frequency resource of the first terminal equipment, the direct communication interface parameters including direct communication interface channel status information (SL-CSI), direct communication interface reference signal received power (SL-RSRP), or direct communication interface discovery reference signal received power (SD-RSRP), A set of direct communication interface frequency resources corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the first terminal device, and The first terminal device includes at least one of the available direct communication interface frequency resource sets for the direct communication interface in the case of duplicate transmission by PDCP.

[0262] Selectively, the second instruction information is CBR or CO in each direct communication interface frequency resource of the second terminal equipment, Side link parameters in each direct communication interface frequency resource of the second terminal equipment, A sidelink parameter frequency resource set corresponding to the transmission path of the direct communication interface in the case of duplicate transmission by PDCP, which is desired for the second terminal device, and The second terminal device includes at least one of the available sidelink parameter frequency resource sets for the direct communication interface in the case of duplication due to PDCP.

[0263] Selectively, the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP includes the direct communication interface frequency resource set corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP.

[0264] Selectively, the number of direct communication interface frequency resource sets is the same as the number of transmission paths in the case of duplicate transmission by PDCP.

[0265] Selectively, the direct communication interface frequency resources in the direct communication interface frequency resource set are: Direct communication interface carrier, and / or Includes the direct communication interface bandwidth portion (BWP).

[0266] Furthermore, the network equipment provided in the embodiments of this disclosure can implement all the methods and steps realized by the above-described method embodiments and can also obtain similar technical effects. Here, a detailed explanation of the parts that are the same as those in the method embodiments and the beneficial effects is omitted.

[0267] Embodiments of the present disclosure further provide a computer-readable storage medium that stores a computer program and enables steps of a method for acquiring frequency resources to be applied to network equipment when the computer program is executed by a processor. The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, and may include, but is not limited to, magnetic memory (e.g., soft disks, hard disks, magnetic cassettes, magnetic disks (MO), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NANDFLASH), solid-state drives (SSDs)).

[0268] As those skilled in the art will see, embodiments of this disclosure may be provided as methods, systems, or computer program products. Therefore, this disclosure may be provided in the form of complete hardware embodiments, complete software embodiments, or embodiments combining software and hardware aspects. Furthermore, this disclosure may be provided in the form of computer program products implemented on one or more computer-available storage media (including, but not limited to, disk memory and optical memory) containing computer-available program code.

[0269] This disclosure is described with reference to flowcharts and / or block diagrams of methods, apparatus (systems) and computer program products relating to embodiments of this disclosure. It should be understood that computer-executable program commands may be used to realize each process and / or block in the flowcharts and / or block diagrams, or combinations of processes and / or blocks in the flowcharts and / or block diagrams. By providing these computer-executable commands to the processor of a general-purpose computer, a dedicated computer, an embedded processor, or another programmable data processing device, a device is generated that, according to commands executed by the processor of the computer or other programmable data processing device, realizes one or more processes in the flowchart and / or one or more blocks in the block diagram.

[0270] The commands that these processors can execute may be stored in computer-readable memory that can guide a computer or other programmable data processing device to operate in a particular manner. The commands stored in the processor-readable memory can then generate a product including a command device, which in turn can enable the execution of a function specified for one or more processes in a flowchart and / or one or more blocks in a block diagram.

[0271] The commands that these processors can execute may be loaded into a computer or other programmable data processing device. This allows the computer or other programmable device to execute a series of operational steps to generate processing realized by the computer, and the commands executed by the computer or other programmable device provide steps to realize a function specified in one or more processes in a flowchart and / or one or more blocks in a block diagram.

[0272] Clearly, a person skilled in the art can make various modifications and alterations to the Disclosure, provided they do not deviate from the spirit or scope of the Disclosure. To the extent that such modifications and alterations fall within the scope of the claims and equivalent art of the Disclosure, the Disclosure is intended to include such modifications and alterations.

Claims

1. A method for acquiring frequency resources performed by a first terminal device, Based on the first information, this includes obtaining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by the Packet Data Convergence Protocol (PDCP), The first piece of information mentioned above is, The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device. First instruction information, which is instruction information for a direct communication interface frequency resource determined by the first terminal device, and A method for acquiring frequency resources, comprising at least one of the following: second instruction information, which is instruction information for a direct communication interface frequency resource received by the first terminal device from a second terminal device.

2. Based on the first information, obtaining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission using the Packet Data Convergence Protocol (PDCP) is: Transmitting the first information to a network device that provides services to a first terminal device, and receiving the available direct communication interface frequency resource set for each transmission path in the case of duplicate transmission by PDCP transmitted from the network device, wherein the direct communication interface frequency resource set is determined by the network device based on the first information, or The method according to claim 1, comprising determining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP based on first information.

3. The method according to claim 1 or 2, wherein the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by PDCP includes a direct communication interface frequency resource set corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP.

4. The number of direct communication interface frequency resource sets is the same as the number of transmission paths in the case of duplicate transmission by PDCP. The direct communication interface frequency resources in the aforementioned direct communication interface frequency resource set are: Direct communication interface carrier, and / or The method according to claim 1 or 2, comprising a direct communication interface bandwidth portion (BWP).

5. Transmitting the aforementioned first information to a network device that provides services to the first terminal device is: The method according to claim 2, comprising transmitting the first information to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

6. Based on the second piece of information, the process further includes obtaining the logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP, The second information mentioned above is, The available LCDs of the first terminal device in a unicast connection between the first terminal device and the second terminal device. LCID for redundant transmission by PDCP on the direct communication interface recommended for the first terminal device in a unicast connection between the first and second terminal devices. The method according to claim 1, comprising at least one of the LCIDs reserved for duplicate transmission by PDCP on the direct communication interface from the first terminal device in a unicast connection between the first terminal device and the second terminal device.

7. Based on the first information, obtaining the LCID corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP is: The second information is transmitted to a network device that provides services to the first terminal device, and the LCID corresponding to each transmission path of the SLRB transmitted from the network device in the case of duplicate transmission by PDCP is received, wherein the LCID is determined by the network device that provides services to the first terminal device based on the second information, or The method according to claim 6, comprising determining the LCID corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP based on the second information.

8. Based on the second piece of information, obtaining the LCID corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP is: From the available LCIDs, N LCIDs are randomly selected, each of the N LCIDs is assigned to a transmission path, each LCID corresponds one-to-one with a transmission path, and N is equal to the number of transmission paths of the direct communication interface in the case of duplicate transmission by PDCP, or The method according to claim 7, comprising: randomly selecting a first LCID from a first LCID set to be the LCID of one transmission path of the direct communication interface in the case of overlapping transmission by PDCP; determining the LCIDs of other transmission paths of the direct communication interface in the case of overlapping transmission by PDCP according to the relationship between the first LCID and the LCDs of different transmission paths; the first LCID being an available LCID, and the first LCID set including available LCIDs of the direct communication interfaces of a first terminal device and a second terminal device.

9. Transmitting the aforementioned second information to a network device that provides services to the first terminal device means The method according to claim 7, comprising transmitting the second information to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

10. The further includes transmitting to a second terminal device the available direct communication interface frequency resource set for each transmission path in the case of PDCP-based duplicate transmission by setting up duplicate transmission via PDCP on the direct communication interface or activating duplicate transmission via PDCP on the direct communication interface, The method according to claim 1, wherein the activation signaling for duplicate transmission by PDCP in the direct communication interface includes at least one of RRC signaling, media access control control element (MAC CE), or physical layer signaling.

11. A method for determining frequency resources performed by network equipment, Based on the first information, the system includes determining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission using the Packet Data Convergence Protocol (PDCP) for the first terminal device, The first piece of information mentioned above is, The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device. First instruction information, which is instruction information for a direct communication interface frequency resource determined by the first terminal device, and A method for determining a frequency resource, comprising at least one of the following: second instruction information, which is instruction information for a direct communication interface frequency resource received by the first terminal device from a second terminal device.

12. Further including receiving first information transmitted from a first terminal device, Receiving the first information transmitted from the first terminal device means The method according to claim 11, comprising receiving first information transmitted from a first terminal device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

13. Based on the second piece of information, the method further includes determining the logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP, The second information mentioned above is, The available LCDs of the first terminal device in a unicast connection between the first terminal device and the second terminal device. LCID for redundant transmission by PDCP on the direct communication interface recommended for the first terminal device in a unicast connection between the first and second terminal devices. The method according to claim 11, comprising at least one of the LCIDs reserved for duplicate transmission by PDCP on the direct communication interface from the first terminal device in a unicast connection between the first terminal device and the second terminal device.

14. A frequency resource acquisition device applied to a first terminal device, Based on first information, the system includes a first acquisition unit for obtaining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by the Packet Data Convergence Protocol (PDCP), The first piece of information mentioned above is, The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device. First instruction information, which is instruction information for a direct communication interface frequency resource determined by the first terminal device, and A frequency resource acquisition device comprising at least one of the following: second instruction information, which is instruction information for a direct communication interface frequency resource received by the first terminal device from a second terminal device.

15. A frequency resource determination device applied to network equipment, Based on first information, a first determination unit is provided for determining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by Packet Data Convergence Protocol (PDCP) for a first terminal device, The first piece of information mentioned above is, The combination of Layer 2 source address and Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device. First instruction information, which is instruction information for a direct communication interface frequency resource determined by the first terminal device, and A frequency resource determination device comprising at least one of the following: second instruction information, which is instruction information for a direct communication interface frequency resource received by the first terminal device from a second terminal device; and a second instruction information.

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