Frequency resource acquisition, determination method, apparatus, terminal device, and network device

Abstract

The present application provides a kind of frequency resource acquisition, determination method, device, terminal equipment and network equipment, the method is executed by first terminal equipment, comprising: based on first information, the available direct communication interface frequency resource set of each transmission path in PDCP repetition transmission condition is acquired;First information includes at least one of the following: the combination of layer two source address and layer two target address of unicast connection between first terminal equipment and second terminal equipment;First indication information;Second indication information.The above scheme can realize the dynamic determination of direct communication interface frequency resource set, and improve the gain of direct communication interface PDCP repetition transmission.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a method, apparatus, terminal equipment, and network equipment for acquiring and determining frequency resources. Background Technology

[0002] For the Long Term Evolution (LTE) Sidelink (SL) interface (which can be referred to as the SL interface), air interface transmission primarily uses broadcast transmission. The network configures the available carrier set for the transmission path corresponding to the L2 target address of the SL interface, approximating the ProSePer-Packet Reliability (PPPR) threshold for each packet of the service, through System Information Blocks (SIBs) or pre-configuration information. Since there is no SL unicast connection between the transceiver and receiver, the SL receiver does not provide any auxiliary information to the SL transmitter. Therefore, the configuration of the available carrier set for the transmission path corresponding to the L2 target address of the SL interface remains fixed. Summary of the Invention

[0003] This invention provides a method, apparatus, terminal device, and network device for acquiring and determining frequency resources to solve the problem of how to configure the SL frequency resource set corresponding to each transmission path of SL PDCP duplication and improve the gain of SL PDCP duplication.

[0004] To address the aforementioned technical problems, embodiments of the present invention provide a frequency resource acquisition method, executed by a first terminal device, comprising:

[0005] Based on the first information, obtain the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP);

[0006] The first information includes at least one of the following:

[0007] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device;

[0008] The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device;

[0009] The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

[0010] Optionally, obtaining the set of available direct communication interface frequency resources for each transmission path under the case of repeated transmission of Packet Data Convergence Protocol (PDCP) based on the first information includes:

[0011] The first information is sent to the network device serving the first terminal device, and the network device sends a set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmissions, wherein the set of direct communication interface frequency resources is determined by the network device based on the first information; or

[0012] Based on the first information, determine the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission.

[0013] Optionally, the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission includes: the set of direct communication interface frequency resources corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) in the case of repeated PDCP transmission.

[0014] Optionally, the number of frequency resource sets for the direct communication interface is the same as the number of transmission paths in the case of repeated PDCP transmission.

[0015] Optionally, the direct communication interface frequency resources in the direct communication interface frequency resource set include:

[0016] Direct communication interface carrier; and / or

[0017] The bandwidth portion of the direct communication interface (BWP).

[0018] Optionally, sending the first information to the network device serving the first terminal device includes:

[0019] The first information is sent to the network device via at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0020] Optionally, the method further includes:

[0021] Based on the second information, obtain the Logical Channel Identifier (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) under the case of repeated PDCP transmission;

[0022] The second information includes at least one of the following:

[0023] The LCID available to the first terminal device under a unicast connection between the first terminal device and the second terminal device;

[0024] The recommended LCID for repeated transmission of the PDCP direct communication interface in a unicast connection between the first terminal device and the second terminal device;

[0025] The first terminal device reserves LCID for repeated transmission of the PDCP on the direct communication interface under the unicast connection between the first terminal device and the second terminal device.

[0026] Optionally, obtaining the LCID corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) under PDCP retransmission based on the second information includes:

[0027] The second information is sent to the network device serving the first terminal device, and the network device sends the LCID corresponding to each transmission path in the case of repeated PDCP transmission to the SLRB, wherein the LCID is determined by the network device serving the first terminal device based on the second information; or

[0028] Based on the second information, determine the LCID corresponding to each transmission path in the case of repeated PDCP transmission by SLRB.

[0029] Optionally, determining the LCID corresponding to each transmission path of the SLRB in the case of repeated PDCP transmissions based on the second information includes:

[0030] Randomly select N LCIDs from the available LCIDs, and use these N LCIDs as the LCIDs for each transmission path. Each LCID corresponds one-to-one with a transmission path, and N equals the number of transmission paths in the case of repeated transmissions in the direct communication interface PDCP; or

[0031] A first LCID is randomly selected from the first LCID set as the LCID of a transmission path in the PDCP repetitive transmission of the direct communication interface. Based on the correlation between the first LCID and the LCIDs of different transmission paths, the LCIDs of other transmission paths in the PDCP repetitive transmission of the direct communication interface are determined. The first LCID is an available LCID. The first LCID set includes: LCIDs available for the direct communication interfaces of the first terminal device and the second terminal device.

[0032] Optionally, sending the second information to the network device serving the first terminal device includes:

[0033] The second information is sent to the network device via at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0034] Optionally, the method further includes:

[0035] The set of available direct communication interface frequency resources for each transmission path under PDCP repeated transmission is sent to the second terminal device via PDCP repeated transmission configuration signaling or PDCP repeated transmission activation signaling through the direct communication interface.

[0036] Optionally, the direct communication interface PDCP repeat transmission activation signaling includes at least one of the following: RRC signaling, Media Access Control Unit (MAC CE) signaling, or physical layer signaling.

[0037] Optionally, after determining the set of available direct communication interface frequency resources for each transmission path in the case of repeated PDCP transmissions based on the first information, the method further includes:

[0038] If the first terminal device adopts the network configuration resource allocation mode, it sends the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission to the network device.

[0039] Optionally, the set of direct communication interface frequency resources may include one or more direct communication interface frequency resources.

[0040] Optionally, if the set of direct communication interface frequency resources includes at least two frequency resources, the method further includes:

[0041] For each logical channel corresponding to the transmission path of the direct communication interface SLRB under the case of repeated PDCP transmission, a target direct communication interface frequency resource is selected from the set of direct communication interface frequency resources corresponding to the transmission path for data transmission.

[0042] Optionally, the first indication information includes at least one of the following:

[0043] The first terminal device has a channel occupancy ratio (CBR) or channel occupancy (CO) on each direct communication interface frequency resource;

[0044] The first terminal device has direct communication interface parameters on each direct communication interface frequency resource, the direct communication interface parameters 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;

[0045] The set of direct communication interface frequency resources corresponding to the transmission path in the case of repeated transmission of PDCP by the first terminal device;

[0046] The set of direct communication interface frequency resources that the first terminal device expects to be available in the case of repeated transmission of the direct communication interface PDCP.

[0047] Optionally, the second indication information includes at least one of the following:

[0048] The second terminal device has a CBR or CO on each direct communication interface frequency resource;

[0049] The pass-through link parameters of the second terminal device on each direct communication interface frequency resource;

[0050] The set of frequency resources corresponding to the direct link parameters of the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the second terminal device;

[0051] The set of frequency resources for the direct communication interface PDCP that the second terminal device expects to use in the case of repeated direct communication.

[0052] This application embodiment also provides a frequency resource determination method, executed by a network device, including:

[0053] Based on the first information, determine the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP) for the first terminal device;

[0054] The first information includes at least one of the following:

[0055] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device;

[0056] The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device;

[0057] The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

[0058] Optionally, the method further includes:

[0059] Receive the first information sent by the first terminal device.

[0060] Optionally, receiving the first information sent by the first terminal device includes:

[0061] The first information sent by the first terminal device is received through at least one of the following: terminal information via direct communication interface, terminal auxiliary information, and radio resource control (RRC) signaling via Uu interface.

[0062] Optionally, the method further includes:

[0063] Based on the second information, determine the Logical Channel Identifier (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) in the case of repeated PDCP transmission;

[0064] The second information includes at least one of the following:

[0065] The LCID available to the first terminal device under a unicast connection between the first terminal device and the second terminal device;

[0066] The recommended LCID for repeated transmission of the PDCP direct communication interface in a unicast connection between the first terminal device and the second terminal device;

[0067] The first terminal device reserves LCID for repeated transmission of the PDCP on the direct communication interface under the unicast connection between the first terminal device and the second terminal device.

[0068] Optionally, determining the Logical Channel Identifier (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) under PDCP retransmission based on the second information includes:

[0069] Randomly select N LCIDs from the available LCIDs, and use these N LCIDs as the LCIDs for each transmission path. Each LCID corresponds one-to-one with a transmission path, and N equals the number of transmission paths in the case of repeated transmissions in the direct communication interface PDCP; or

[0070] A first LCID is randomly selected from the first LCID set as the LCID of a transmission path in the PDCP repetitive transmission of the direct communication interface. Based on the correlation between the first LCID and the LCIDs of different transmission paths, the LCIDs of other transmission paths in the PDCP repetitive transmission of the direct communication interface are determined. The first LCID is an available LCID. The first LCID set includes: LCIDs available for the direct communication interfaces of the first terminal device and the second terminal device.

[0071] Optionally, the method further includes:

[0072] Receive the second information sent by the first terminal device.

[0073] Optionally, receiving the second information sent by the first terminal device includes:

[0074] The second information sent by the first terminal device is received through at least one of the following: terminal information via direct communication interface, terminal auxiliary information, and radio resource control (RRC) signaling via Uu interface.

[0075] Optionally, the method further includes:

[0076] The SLRB sends the Logical Channel Identifier (LCID) corresponding to each transmission path in the case of repeated PDCP transmission to the first terminal device.

[0077] Optionally, the method further includes:

[0078] The set of available direct communication interface frequency resources for each transmission path under PDCP repeated transmission is sent to the first terminal device via PDCP repeated transmission configuration signaling or PDCP repeated transmission activation signaling through the direct communication interface.

[0079] Optionally, the direct communication interface PDCP repeat transmission activation signaling includes at least one of the following: RRC signaling, Media Access Control Unit (MAC CE) signaling, or physical layer signaling.

[0080] This application embodiment also provides a terminal device, which is a first terminal device, characterized in that it includes a memory, a transceiver, and a processor:

[0081] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0082] Based on the first information, obtain the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP);

[0083] The first information includes at least one of the following:

[0084] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device;

[0085] The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device;

[0086] The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

[0087] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0088] The first information is sent to the network device serving the first terminal device, and the network device sends a set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmissions, wherein the set of direct communication interface frequency resources is determined by the network device based on the first information; or

[0089] Based on the first information, determine the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission.

[0090] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0091] The first information is sent to the network device via at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0092] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0093] Based on the second information, obtain the Logical Channel Identifier (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) under the case of repeated PDCP transmission;

[0094] The second information includes at least one of the following:

[0095] The LCID available to the first terminal device under a unicast connection between the first terminal device and the second terminal device;

[0096] The recommended LCID for repeated transmission of the PDCP direct communication interface in a unicast connection between the first terminal device and the second terminal device;

[0097] The first terminal device reserves LCID for repeated transmission of the PDCP on the direct communication interface under the unicast connection between the first terminal device and the second terminal device.

[0098] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0099] The second information is sent to the network device serving the first terminal device, and the network device sends the LCID corresponding to each transmission path in the case of repeated PDCP transmission to the SLRB, wherein the LCID is determined by the network device serving the first terminal device based on the second information; or

[0100] Based on the second information, determine the LCID corresponding to each transmission path in the case of repeated PDCP transmission by SLRB.

[0101] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0102] Randomly select N LCIDs from the available LCIDs, and use these N LCIDs as the LCIDs for each transmission path. Each LCID corresponds one-to-one with a transmission path, and N equals the number of transmission paths in the case of repeated transmissions in the direct communication interface PDCP; or

[0103] A first LCID is randomly selected from the first LCID set as the LCID of a transmission path in the PDCP repetitive transmission of the direct communication interface. Based on the correlation between the first LCID and the LCIDs of different transmission paths, the LCIDs of other transmission paths in the PDCP repetitive transmission of the direct communication interface are determined. The first LCID is an available LCID. The first LCID set includes: LCIDs available for the direct communication interfaces of the first terminal device and the second terminal device.

[0104] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0105] The second information is sent to the network device via at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0106] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0107] The set of available direct communication interface frequency resources for each transmission path under PDCP repeated transmission is sent to the second terminal device via PDCP repeated transmission configuration signaling or PDCP repeated transmission activation signaling through the direct communication interface.

[0108] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0109] If the first terminal device adopts the network configuration resource allocation mode, it sends the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission to the network device.

[0110] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0111] For each logical channel corresponding to the transmission path of the direct communication interface SLRB under the case of repeated PDCP transmission, a target direct communication interface frequency resource is selected from the set of direct communication interface frequency resources corresponding to the transmission path for data transmission.

[0112] This application also provides a network device, including a memory, a transceiver, and a processor:

[0113] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0114] Based on the first information, determine the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP) for the first terminal device;

[0115] The first information includes at least one of the following:

[0116] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device;

[0117] The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device;

[0118] The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

[0119] This application embodiment also provides a frequency resource acquisition device, applied to a first terminal device, including:

[0120] The first acquisition unit is used to acquire, based on the first information, the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP);

[0121] The first information includes at least one of the following:

[0122] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device;

[0123] The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device;

[0124] The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

[0125] This application also provides a frequency resource determination device, applied to a network device, including:

[0126] The first determining unit is configured to determine, based on the first information, the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP) for the first terminal device;

[0127] The first information includes at least one of the following:

[0128] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device;

[0129] The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device;

[0130] The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

[0131] This invention provides a processor-readable storage medium storing a computer program for causing the processor to execute the above-described method.

[0132] The beneficial effects of this invention are:

[0133] The above scheme obtains the set of available direct communication interface frequency resources for each transmission path under the condition of repeated PDCP transmission based on the first information, thereby realizing the dynamic determination of the set of direct communication interface frequency resources and improving the gain of repeated PDCP transmission of the direct communication interface. Attached Figure Description

[0134] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0135] Figure 1 This diagram illustrates the PDCP duplication.

[0136] Figure 2 A flowchart illustrating the frequency resource acquisition method according to an embodiment of the present invention;

[0137] Figure 3 A flowchart illustrating the frequency resource determination method according to an embodiment of the present invention;

[0138] Figure 4 One of the detailed flowcharts illustrating a specific application scenario of an embodiment of the present invention;

[0139] Figure 5 The second detailed flowchart illustrating a specific application scenario of an embodiment of the present invention;

[0140] Figure 6 The third detailed flowchart illustrating a specific application of an embodiment of the present invention;

[0141] Figure 7 A schematic diagram of a frequency resource acquisition device according to an embodiment of the present invention;

[0142] Figure 8 A structural diagram illustrating the terminal device according to an embodiment of this application;

[0143] Figure 9 A schematic diagram of a frequency resource determination device according to an embodiment of the present invention;

[0144] Figure 10 This is a structural diagram of a network device according to an embodiment of this application. Detailed Implementation

[0145] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0146] The terms “first,” “second,” etc., used in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the application described herein may be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0147] In this application's embodiments, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship. In this application's embodiments, the term "multiple" refers to two or more, and other quantifiers are similar.

[0148] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0149] The relevant concepts mentioned in this application will be briefly explained below.

[0150] 1. LTE Direct Communication Interface PDCP Duplication Mechanism

[0151] From an air interface design perspective, the LTE direct communication interface only supports broadcast transmission.

[0152] To improve the reliability of data transmission through direct communication interfaces, a PDCP duplication mechanism is introduced. PDCP duplication refers to a radio bearer (corresponding to one PDCP entity) at the PDCP layer being transmitted separately at the Radio Link Control (RLC) layer through multiple logical channels (each logical channel corresponding to one RLC entity). The RLC entity then transmits the data to the Media Access Control (MAC) layer. A schematic diagram is shown below. Figure 1 As shown.

[0153] The establishment of the LTE direct communication interface radio bearer depends entirely on the terminal implementation; the base station does not participate. The base station will only configure a threshold close to the Per Prose Packet Reliability (PPPR) threshold. The terminal will directly determine whether to activate PDCP duplication based on whether the PPPR corresponding to the direct communication interface radio bearer is below the threshold.

[0154] For New Radio (NR) SL, unlike LTE SL, NR SL supports SL unicast transmission. For SL unicast transmission, the static configuration of the available carrier set for the transmission path in the LTE Packet Data Convergence Protocol (PDCP) duplication is not applicable to NR SL unicast transmission.

[0155] The embodiments of this application are described below with reference to the accompanying drawings. The frequency resource acquisition and determination methods, apparatus, terminal equipment, and network equipment provided in the embodiments of this application can be applied to wireless communication systems. This wireless communication system can be a system employing fifth-generation (5G) mobile communication technology (hereinafter referred to as a 5G system). Those skilled in the art will understand that the 5G NR system is merely an example and not a limitation.

[0156] This application provides a frequency resource acquisition and determination method, apparatus, terminal device, and network device to solve the problem of how to configure the SL frequency resource set corresponding to each transmission path of SL PDCP duplication and improve the gain of SL PDCP duplication.

[0157] The method and apparatus are based on the same concept of the application. Since the methods and apparatus solve problems in similar ways, the implementation of the apparatus and methods can refer to each other, and the repeated parts will not be described again.

[0158] like Figure 2 As shown, this embodiment of the invention provides a frequency resource acquisition method, executed by a first terminal device, including:

[0159] Step S201: Based on the first information, obtain the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP);

[0160] The first information includes at least one of the following:

[0161] A11. The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device;

[0162] A12. First indication information, wherein the first indication information is indication information of the direct communication interface frequency resources determined by the first terminal device;

[0163] A13. Second indication information, wherein the second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

[0164] In this embodiment, by dynamically obtaining the set of direct communication interface frequency resources available for each transmission path under the case of repeated PDCP transmission based on the first information, the problem of affecting the performance of SL PDCP duplication caused by only being able to statically configure the set of direct communication interface frequency resources is avoided.

[0165] Optionally, the first terminal device mentioned in the embodiments of this application refers to a sending terminal, that is, a terminal device that sends data during direct communication; the second terminal device refers to a receiving terminal, that is, a terminal device that receives data during direct communication.

[0166] Optionally, in another embodiment of this application, the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission includes: the set of direct communication interface frequency resources corresponding to each transmission path of the Sidelink Radio Bearer (SLRB) in the case of repeated PDCP transmission.

[0167] Optionally, in another embodiment of this application, the number of the direct communication interface frequency resource set is the same as the number of transmission paths in the case of repeated PDCP transmission.

[0168] In other words, the number of transmission paths that exist for SLRB under PDCP repetitive transmission will determine the number of direct communication interface frequency resource sets.

[0169] Optionally, in another embodiment of this application, the direct communication interface frequency resources in the direct communication interface frequency resource set include:

[0170] Direct communication interface carrier; and / or

[0171] The Bandwidth Part (BWP) of the direct communication interface.

[0172] Optionally, in another embodiment of this application, the direct communication interface frequency resource set includes one or more direct communication interface frequency resources.

[0173] Optionally, if the set of direct communication interface frequency resources includes at least two frequency resources, the method further includes:

[0174] For each logical channel corresponding to the transmission path of the direct communication interface SLRB under the case of repeated PDCP transmission, a target direct communication interface frequency resource is selected from the set of direct communication interface frequency resources corresponding to the transmission path for data transmission.

[0175] It should be noted that, in this case, if the first terminal device adopts a terminal-selected resource determination method, it needs to select a direct communication interface frequency resource from the direct communication interface frequency resource set for data transmission. For example, the first terminal device may randomly select a resource from the direct communication interface frequency resource set. It should be noted that the above-described implementation of randomly selecting a resource from the direct communication interface frequency resource set is merely an example, and any implementation of selecting a resource from the direct communication interface frequency resource set falls within the protection scope of this application.

[0176] Optionally, in one embodiment of this application, the first indication information includes at least one of the following:

[0177] A121. The channel busy ratio (CBR) or channel occupy (CO) of the first terminal device on each direct communication interface frequency resource.

[0178] A122. Direct communication interface parameters of the first terminal device on each direct communication interface frequency resource;

[0179] The direct communication interface parameters include: 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).

[0180] A123. The set of direct communication interface frequency resources corresponding to the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the first terminal device;

[0181] A124. The set of direct communication interface frequency resources that the first terminal device expects to be available in the case of repeated transmission of the direct communication interface PDCP.

[0182] Optionally, in one embodiment of this application, the second indication information includes at least one of the following:

[0183] A131, the second terminal equipment has a CBR or CO on each direct communication interface frequency resource;

[0184] A132. Straight-through link parameters of the second terminal device on each direct communication interface frequency resource;

[0185] A133, the set of frequency resources corresponding to the direct link parameters of the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the second terminal device;

[0186] A134. The set of frequency resources of the direct communication interface PDCP that the second terminal device expects to use in the case of repetition.

[0187] It should be noted that this second instruction information is typically sent from the second terminal device to the first terminal device. Specifically, the second terminal device sends the second instruction information to the first terminal device via a direct communication interface.

[0188] It should be noted that the embodiments of this application provide two methods for the first terminal device to obtain the set of direct communication interface frequency resources available for each transmission path under the condition of repeated PDCP transmission. One method is for the first terminal device to determine the set of direct communication interface frequency resources available for each transmission path under the condition of repeated PDCP transmission itself, that is, the first terminal device determines the set of direct communication interface frequency resources available for each transmission path under the condition of repeated PDCP transmission based on the first information. The other method is for the first terminal device to directly receive the set of direct communication interface frequency resources available for each transmission path under the condition of repeated PDCP transmission sent by the network device, that is, the first terminal device sends the first information to the network device serving the first terminal device and receives the set of direct communication interface frequency resources available for each transmission path under the condition of repeated PDCP transmission sent by the network device. The set of direct communication interface frequency resources is determined by the network device based on the first information. The two implementation methods are described below.

[0189] Method 1: The first terminal device determines itself directly based on the first information.

[0190] In this implementation, the first terminal device determines the set of direct communication interface frequency resources in one of the following ways:

[0191] B11. Determine the currently available SL frequency resource set based on the first information, then sort the SL frequency resources in the SL frequency resource set in order from low to high according to CBR or CO, and then allocate the SL frequency resources to each transmission path of the direct communication interface PDCP repeated transmission in sequence.

[0192] It should be noted that, under this method of determining the direct communication interface frequency resource set, each direct communication interface frequency resource set includes only one direct communication interface frequency resource.

[0193] B12. Determine the currently available SL frequency resource set based on the first information, and then randomly allocate the SL frequency resources in the SL frequency resource set to the same number of groups as the number of transmission paths according to the number of transmission paths of the direct communication interface PDCP repeated transmission. Each group of SL frequency resources is used as the SL frequency resource set corresponding to the next transmission of the direct communication interface PDCP repeated transmission.

[0194] It should be noted that, under this method of determining the direct communication interface frequency resource set, each direct communication interface frequency resource set typically includes one or more (i.e., at least two) direct communication interface frequency resources.

[0195] Optionally, in this case, after the first terminal determines that it has obtained the set of direct communication interface frequency resources, it should also send the set of direct communication interface frequency resources available for each transmission path under the PDCP repeated transmission condition to the second terminal device through the direct communication interface PDCP repeated transmission configuration signaling or the direct communication interface PDCP repeated transmission activation signaling.

[0196] Optionally, the direct communication interface PDCP repeat transmission activation signaling includes at least one of the following: RRC signaling, media access control unit (MAC CE) signaling, or physical layer signaling.

[0197] Optionally, in this case, if the first terminal device adopts the network configuration resource allocation mode, the first terminal device should also send the set of direct communication interface frequency resources available for each transmission path under the case of repeated PDCP transmission to the network device so that the network device can use the set of direct communication interface frequency resources.

[0198] Method 2: The set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmissions sent by the network device to the first terminal device.

[0199] Optionally, in this implementation, sending the first information to the network device serving the first terminal device includes:

[0200] The first information is sent to the network device via at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface RRC signaling.

[0201] Optionally, in this case, after the first terminal device obtains the set of direct communication interface frequency resources sent by the network device, it should also send the set of direct communication interface frequency resources available for each transmission path under the PDCP repeated transmission condition to the second terminal device through the direct communication interface PDCP repeated transmission configuration signaling or the direct communication interface PDCP repeated transmission activation signaling.

[0202] Optionally, the direct communication interface PDCP repeat transmission activation signaling includes at least one of the following: RRC signaling, MAC CE, or physical layer signaling.

[0203] It should also be noted that the network device can use either B11 or B12 above to determine the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission.

[0204] Optionally, in another embodiment of this application, the method further includes:

[0205] Based on the second information, obtain the Logical Channel Identity (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) under the case of repeated PDCP transmission.

[0206] Specifically, the first terminal device can obtain the LCID corresponding to each transmission path of SLRB in the case of repeated PDCP transmission using one of the following methods:

[0207] C11. Based on the second information, determine the LCID corresponding to each transmission path of SLRB in the case of repeated PDCP transmission;

[0208] This refers to the first terminal device determining the LCID corresponding to each transmission path of the SLRB in the case of repeated PDCP transmission based on the second information.

[0209] Optionally, the specific implementation method by which the first terminal device determines the LCID corresponding to each transmission path may include the following:

[0210] C111. Randomly select N LCIDs from the available LCIDs, and use the N LCIDs as the LCIDs corresponding to each transmission path. The LCIDs correspond one-to-one with the transmission paths. N is equal to the number of transmission paths in the case of repeated transmission of the direct communication interface PDCP.

[0211] It should be noted that in this implementation, N LCIDs are randomly determined, and then these N LCIDs are assigned to N transmission paths. Available LCIDs can be understood as the LCIDs corresponding to unoccupied logical channels, or simply unoccupied LCIDs. That is, the direct communication interface transmitting terminal can randomly select the same number of LCIDs from the currently unoccupied LCIDs as the number of transmission paths that the direct communication interface PDCP repeats, and use these selected LCIDs as the LCIDs corresponding to each transmission path.

[0212] C112. Randomly select a first LCID from the first LCID set as the LCID of a transmission path in the PDCP repetitive transmission of the direct communication interface. Based on the association between the first LCID and the LCIDs of different transmission paths, determine the LCIDs of other transmission paths in the PDCP repetitive transmission of the direct communication interface. The first LCID is an available LCID. The first LCID set includes: LCIDs available for the direct communication interface of the first terminal device and the second terminal device.

[0213] It should be noted that in this case, the LCID corresponding to one transmission path is determined first. The LCIDs of other paths are associated with the determined LCID of the transmission path. This association can be agreed upon by the protocol or configured by the network device. For example, the difference between the LCID of other paths and the LCID of the determined transmission path is less than or equal to a certain threshold; for example, the LCIDs of other paths and the LCID of the determined transmission path together form an arithmetic sequence, a geometric sequence, etc.; for example, for an LCH with LCID=2, the LCID of the associated SL PDCP duplication is LCID=12. It should be noted that this is merely an example of an association relationship, and any method of determining the LCID of other paths through association relationships falls within the scope of protection of this application.

[0214] In other words, the direct communication interface sending terminal can randomly select an unoccupied LCID from the first LCID set as the LCID of a transmission path in the repeated transmission of the direct communication interface PDCP, and then determine the LCIDs corresponding to other transmission paths based on the LCID and the pre-agreed association between the LCIDs of different transmission paths in the case of repeated transmission of the direct communication interface PDCP.

[0215] C12. Send the second information to the network device serving the first terminal device, and receive the LCID corresponding to each transmission path of SLRB in the case of repeated PDCP transmission sent by the network device, wherein the LCID is determined by the network device serving the first terminal based on the second information.

[0216] It should be noted that in this case, the LCID corresponding to each transmission path is determined by the network device based on the second information and transmitted to the first terminal device; optionally, the network device usually uses C111 or C112 to determine the LCID corresponding to each transmission path.

[0217] Optionally, in this case, the first terminal device sends the second information to the network device through at least one of the following: SidelinkUEInformation, UEAssistanceInformation, and Uu interface RRC signaling.

[0218] It should be noted that the second information includes at least one of the following:

[0219] C21. The LCID available to the first terminal device under a unicast connection between the first terminal device and the second terminal device;

[0220] C22. The LCID recommended by the first terminal device for repeated transmission of the PDCP direct communication interface under the unicast connection between the first terminal device and the second terminal device;

[0221] C23. The first terminal device reserves LCID for repeated transmission of the PDCP on the direct communication interface under the unicast connection between the first terminal device and the second terminal device.

[0222] It should be noted that at least one embodiment of this application provides a method for configuring direct communication interface repeat transmission resources. This method can solve the problem of how to configure the set of direct communication interface frequency resources corresponding to each transmission path under direct communication interface PDCP repeat transmission by the direct communication interface transmitting terminal or the network device to which the direct communication interface transmitting terminal belongs, and better improve the gain of direct communication interface PDCP repeat transmission.

[0223] The technical solutions provided in this application can be applied to various systems, especially 5G systems. For example, applicable systems include Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS), Long Term Evolution (LTE), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), Long Term Evolution Advanced (LTE-A), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), and 5G New Radio (NR). All of these systems include terminal equipment and network equipment. The systems may also include a core network component, such as Evolved Packet System (EPS) and 5G system (5GS).

[0224] The terminal devices involved in the embodiments of this application can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminal devices may differ in different systems; for example, in a 5G system, a terminal device can be called User Equipment (UE). Wireless terminal devices can communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, for example, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). Wireless terminal equipment can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, or user device, but this application does not limit the terminology.

[0225] The network device involved in this application embodiment can be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, a base station may also be called an access point, or a device in an access network that communicates with a wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device can also coordinate the attribute management of the air interface. For example, the network equipment involved in the embodiments of this application can be a base transceiver station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA) system, a NodeB in a wide-band Code Division Multiple Access (WCDMA) system, an evolved Node B (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation system, a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of this application. In some network structures, the network equipment may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and distributed unit may also be geographically separated.

[0226] Network devices and terminal devices can each use one or more antennas to perform multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multiple-user MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, and can also be diversity transmission, precoding transmission, or beamforming transmission, etc.

[0227] like Figure 3 As shown, this embodiment of the invention provides a frequency resource determination method, executed by a network device, including:

[0228] Step S301: Based on the first information, determine the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP) for the first terminal device;

[0229] The first information includes at least one of the following:

[0230] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device;

[0231] The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device;

[0232] The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

[0233] Optionally, the method further includes:

[0234] Receive the first information sent by the first terminal device.

[0235] Optionally, receiving the first information sent by the first terminal device includes:

[0236] The first information sent by the first terminal device is received through at least one of the following: terminal information via direct communication interface, terminal auxiliary information, and radio resource control (RRC) signaling via Uu interface.

[0237] Optionally, the method further includes:

[0238] Based on the second information, determine the Logical Channel Identifier (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) in the case of repeated PDCP transmission;

[0239] The second information includes at least one of the following:

[0240] The LCID available to the first terminal device under a unicast connection between the first terminal device and the second terminal device;

[0241] The recommended LCID for repeated transmission of the PDCP direct communication interface in a unicast connection between the first terminal device and the second terminal device;

[0242] The first terminal device reserves LCID for repeated transmission of the PDCP on the direct communication interface under the unicast connection between the first terminal device and the second terminal device.

[0243] Optionally, determining the Logical Channel Identifier (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) under PDCP retransmission based on the second information includes:

[0244] Randomly select N LCIDs from the available LCIDs, and use these N LCIDs as the LCIDs for each transmission path. Each LCID corresponds one-to-one with a transmission path, and N equals the number of transmission paths in the case of repeated transmissions in the direct communication interface PDCP; or

[0245] A first LCID is randomly selected from the first LCID set as the LCID of a transmission path in the PDCP repetitive transmission of the direct communication interface. Based on the correlation between the first LCID and the LCIDs of different transmission paths, the LCIDs of other transmission paths in the PDCP repetitive transmission of the direct communication interface are determined. The first LCID is an available LCID. The first LCID set includes: LCIDs available for the direct communication interfaces of the first terminal device and the second terminal device.

[0246] Optionally, the method further includes:

[0247] Receive the second information sent by the first terminal device.

[0248] Optionally, receiving the second information sent by the first terminal device includes:

[0249] The second information sent by the first terminal device is received through at least one of the following: terminal information via direct communication interface, terminal auxiliary information, and radio resource control (RRC) signaling via Uu interface.

[0250] Optionally, the method further includes:

[0251] The SLRB sends the Logical Channel Identifier (LCID) corresponding to each transmission path in the case of repeated PDCP transmission to the first terminal device.

[0252] Optionally, the method further includes:

[0253] The set of available direct communication interface frequency resources for each transmission path under PDCP repeated transmission is sent to the first terminal device via PDCP repeated transmission configuration signaling or PDCP repeated transmission activation signaling through the direct communication interface.

[0254] Optionally, the direct communication interface PDCP repeat transmission activation signaling includes at least one of the following: RRC signaling, Media Access Control Unit (MAC CE) signaling, or physical layer signaling.

[0255] Optionally, the first indication information includes at least one of the following:

[0256] The first terminal device has a channel occupancy ratio (CBR) or channel occupancy (CO) on each direct communication interface frequency resource;

[0257] The first terminal device has direct communication interface parameters on each direct communication interface frequency resource, the direct communication interface parameters 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;

[0258] The set of direct communication interface frequency resources corresponding to the transmission path in the case of repeated transmission of PDCP by the first terminal device;

[0259] The set of direct communication interface frequency resources that the first terminal device expects to be available in the case of repeated transmission of the direct communication interface PDCP.

[0260] Optionally, the second indication information includes at least one of the following:

[0261] The second terminal device has a CBR or CO on each direct communication interface frequency resource;

[0262] The pass-through link parameters of the second terminal device on each direct communication interface frequency resource;

[0263] The set of frequency resources corresponding to the direct link parameters of the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the second terminal device;

[0264] The set of frequency resources for the direct communication interface PDCP that the second terminal device expects to use in the case of repeated direct communication.

[0265] Optionally, the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission includes: the set of direct communication interface frequency resources corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) in the case of repeated PDCP transmission.

[0266] Optionally, the number of frequency resource sets for the direct communication interface is the same as the number of transmission paths in the case of repeated PDCP transmission.

[0267] Optionally, the direct communication interface frequency resources in the direct communication interface frequency resource set include:

[0268] Direct communication interface carrier; and / or

[0269] The bandwidth portion of the direct communication interface (BWP).

[0270] It should be noted that all the implementation methods in the above embodiments are applicable to the embodiments of the frequency resource determination method applied to the network device side, and can achieve the same technical effect, so they will not be described again here.

[0271] The specific application of this application will be explained in detail below from the perspective of the sending terminal and the receiving terminal.

[0272] Application Scenario 1: The transmitting terminal determines the set of available direct communication interface frequency resources for each transmission path and the corresponding LCID for each transmission path in the case of repeated PDCP transmissions.

[0273] The main processes include the following:

[0274] Step S11: The direct communication interface transmitting terminal determines the set of available direct communication interface frequency resources for each transmission path and the LCID corresponding to each transmission path in the case of repeated transmission of the direct communication interface PDCP.

[0275] It should be noted that, in this case, the LCID corresponding to each transmission path and the set of direct communication interface frequency resources corresponding to each transmission path are determined by the direct communication interface transmitting terminal under the case of repeated transmission of PDCP by the SLRB.

[0276] Specifically, how the direct communication interface transmitting terminal determines the LCID corresponding to each transmission path and the set of direct communication interface frequency resources corresponding to each transmission path under the direct communication interface PDCP duplication can depend on the implementation of the direct communication interface transmitting terminal. An example is given below:

[0277] The LCID can be determined in one of the following ways, but is not limited to:

[0278] The direct communication interface transmitting terminal can randomly select the same number of LCIDs as the direct communication interface PDCP repeated transmission path from the currently unoccupied LCIDs, and use the selected LCIDs as the LCIDs corresponding to each transmission path;

[0279] The direct communication interface transmitting terminal can randomly select an unoccupied LCID from the first LCID set as the LCID of a transmission path in the repeated transmission of the direct communication interface PDCP. Then, based on the LCID and the pre-agreed association between the LCIDs of different transmission paths in the case of repeated transmission of the direct communication interface PDCP, the LCIDs corresponding to other transmission paths are determined.

[0280] The first LCID set includes: LCIDs available for direct communication interfaces between the first terminal device and the second terminal device.

[0281] The method for determining the set of direct communication interface frequency resources corresponding to each transmission path may be, but is not limited to, one of the following:

[0282] Based on the first information, determine the set of currently available SL frequency resources, then sort the SL frequency resources in the set of SL frequency resources in order from low to high according to CBR or CO, and then allocate the SL frequency resources to each transmission path of the direct communication interface PDCP repeated transmission in turn.

[0283] Based on the first information, determine the set of available SL frequency resources. Then, based on the number of transmission paths for repeated transmission of the direct communication interface PDCP, randomly allocate the SL frequency resources in the set of SL frequency resources to the same number of groups as the number of transmission paths. Each group of SL frequency resources is used as the set of SL frequency resources corresponding to the next transmission of the repeated transmission of the direct communication interface PDCP.

[0284] The content of the first information may be one or a combination of the following, but is not limited to:

[0285] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the transmitting terminal device and the receiving terminal device;

[0286] The transmitting terminal equipment uses CBR or CO on each direct communication interface frequency resource;

[0287] The transmitting terminal equipment uses SL-CSI, SL-RSRP, or SD-RSRP on each direct communication interface frequency resource.

[0288] Step S12: The direct communication interface sending terminal determines the specific transmission resources used for each transmission path in the case of repeated transmission of PDCP in the direct communication interface;

[0289] If the number of direct communication interface frequency resources in the set of direct communication interface frequency resources determined in step S12 can be multiple, and the direct communication interface transmitting terminal uses the terminal self-selection resource allocation mode, then the direct communication interface transmitting terminal needs to uniquely select a direct communication interface frequency resource from each set of direct communication interface frequency resources. The specific selection method can be as follows: for the logical channel corresponding to each transmission path of the direct communication interface SLRB in the case of repeated transmission of PDCP, select a target direct communication interface frequency resource from the set of direct communication interface frequency resources corresponding to the transmission path, and use the selected unique direct communication interface frequency resource to perform data transmission on the transmission path.

[0290] Application Scenario 2: The transmitting terminal determines the set of available direct communication interface frequency resources for each transmission path and the corresponding LCID for each transmission path in the case of repeated PDCP transmissions.

[0291] like Figure 4 As shown, the main processes include the following:

[0292] Step S21: The direct communication interface sending terminal receives the second indication information sent by the direct communication interface receiving terminal through the direct communication interface;

[0293] The direct communication interface transmitting terminal receives second indication information sent by the direct communication interface receiving terminal through the direct communication interface. The second indication information is used to assist the direct communication interface transmitting terminal in determining the set of available direct communication interface frequency resources in the case of repeated transmission of PDCP of the direct communication interface.

[0294] The content of the second instruction information may be, but is not limited to, one or more of the following:

[0295] The receiving terminal equipment uses CBR or CO on each direct communication interface frequency resource;

[0296] The receiving terminal equipment receives the pass-through link parameters on each direct communication interface frequency resource;

[0297] The set of frequency resources corresponding to the pass-through link parameters of the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the receiving terminal equipment;

[0298] The set of frequency resources for the direct communication interface PDCP expected by the receiving terminal device, which can be used in the case of repetition.

[0299] Step S22: The direct communication interface transmitting terminal determines the direct communication interface frequency resource set and LCID in the case of repeated transmission of PDCP of the direct communication interface;

[0300] In this embodiment, the direct communication interface transmitting terminal determines the LCID corresponding to each transmission path and the direct communication interface frequency resource set corresponding to each transmission path under the case of repeated transmission of PDCP by the SLRB.

[0301] Specifically, how the direct communication interface transmitting terminal determines the LCID corresponding to each transmission path and the set of direct communication interface frequency resources corresponding to each transmission path under the case of repeated transmission of PDCP by the SLRB depends on the implementation of the direct communication interface transmitting terminal. An example is given below:

[0302] The LCID can be determined in one of the following ways, but is not limited to:

[0303] The direct communication interface transmitting terminal can randomly select the same number of LCIDs as the direct communication interface PDCP repeated transmission path from the currently unoccupied LCIDs, and use the selected LCIDs as the LCIDs corresponding to each transmission path;

[0304] The direct communication interface transmitting terminal can randomly select an unoccupied LCID from the first LCID set as the LCID of a transmission path in the repeated transmission of the direct communication interface PDCP. Then, based on the LCID and the pre-agreed association between the LCIDs of different transmission paths in the case of repeated transmission of the direct communication interface PDCP, the LCIDs corresponding to other transmission paths are determined.

[0305] The first LCID set includes: LCIDs available for direct communication interfaces between the first terminal device and the second terminal device.

[0306] The method for determining the set of direct communication interface frequency resources corresponding to each transmission path may be, but is not limited to, one of the following:

[0307] Based on the first information, determine the set of currently available SL frequency resources, then sort the SL frequency resources in the set of SL frequency resources in order from low to high according to CBR or CO, and then allocate the SL frequency resources to each transmission path of the direct communication interface PDCP repeated transmission in turn.

[0308] Based on the first information, determine the set of available SL frequency resources. Then, based on the number of transmission paths for repeated transmission of the direct communication interface PDCP, randomly allocate the SL frequency resources in the set of SL frequency resources to the same number of groups as the number of transmission paths. Each group of SL frequency resources is used as the set of SL frequency resources corresponding to the next transmission of the repeated transmission of the direct communication interface PDCP.

[0309] The first information includes, but is not limited to, one or more of the following:

[0310] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the transmitting terminal device and the receiving terminal device;

[0311] The transmitting terminal equipment uses CBR or CO on each direct communication interface frequency resource;

[0312] The transmitting terminal equipment transmits SL-CSI, SL-RSRP, or SD-RSRP on each direct communication interface frequency resource;

[0313] The set of direct communication interface frequency resources corresponding to the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the transmitting terminal device;

[0314] The set of direct communication interface frequency resources that can be used in the case of repeated transmission of PDCP by the transmitting terminal equipment;

[0315] The second instruction information received from the receiving terminal.

[0316] Step S23: The direct communication interface sending terminal determines the specific transmission resources used for each transmission path in the case of repeated transmission of PDCP in the direct communication interface;

[0317] If the number of direct communication interface frequency resources in the set of direct communication interface frequency resources determined in step S22 can be multiple, and the direct communication interface transmitting terminal uses the terminal self-selection resource allocation mode, then the direct communication interface transmitting terminal needs to uniquely select a direct communication interface frequency resource from each set of direct communication interface frequency resources. The specific selection method can be as follows: for the logical channel corresponding to each transmission path of the direct communication interface SLRB in the case of repeated transmission of PDCP, select a target direct communication interface frequency resource from the set of direct communication interface frequency resources corresponding to the transmission path, and use the selected unique direct communication interface frequency resource to perform data transmission on the transmission path.

[0318] Application Scenario 3: Determining the set of available direct communication interface frequency resources for each transmission path and the corresponding LCID for each transmission path in the case of repeated PDCP transmissions for network equipment serving the sending terminal.

[0319] like Figure 5 As shown, the main processes include the following:

[0320] Step S31: The direct communication interface sending terminal receives the second indication information sent by the direct communication interface receiving terminal through the direct communication interface;

[0321] The direct communication interface transmitting terminal receives the second indication information sent by the direct communication interface receiving terminal through the direct communication interface interface. The second indication information is used to assist the network device corresponding to the direct communication interface transmitting terminal in determining the set of available direct communication interface frequency resources in the case of repeated transmission of PDCP of the direct communication interface.

[0322] The content of the second instruction information may be, but is not limited to, one or more of the following:

[0323] The receiving terminal equipment uses CBR or CO on each direct communication interface frequency resource;

[0324] The receiving terminal equipment receives the pass-through link parameters on each direct communication interface frequency resource;

[0325] The set of frequency resources corresponding to the pass-through link parameters of the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the receiving terminal equipment;

[0326] The set of frequency resources for the direct communication interface PDCP expected by the receiving terminal device, which can be used in the case of repetition.

[0327] Step S32: The direct communication interface sending terminal sends first information and second information to the network device serving the direct communication interface sending terminal;

[0328] The first information includes, but is not limited to, one or more of the following:

[0329] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the transmitting terminal device and the receiving terminal device;

[0330] The transmitting terminal equipment uses CBR or CO on each direct communication interface frequency resource;

[0331] The transmitting terminal equipment transmits SL-CSI, SL-RSRP, or SD-RSRP on each direct communication interface frequency resource;

[0332] The set of direct communication interface frequency resources corresponding to the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the transmitting terminal device;

[0333] The set of direct communication interface frequency resources that can be used in the case of repeated transmission of PDCP by the transmitting terminal equipment;

[0334] The second instruction information received from the receiving terminal.

[0335] The first information can be obtained using existing SidelinkUEInformation or UEAssistanceInformation or new Uu interface RRC signaling.

[0336] The second information includes, but is not limited to, one or more of the following:

[0337] The LCID available to the transmitting terminal device under a unicast connection between the transmitting terminal device and the receiving terminal device;

[0338] The recommended LCID for repeated transmission of PDCP on the direct communication interface under unicast connection between the transmitting terminal device and the receiving terminal device;

[0339] The LCID reserved by the transmitting terminal device for repeated transmission of PDCP on the direct communication interface under the unicast connection between the transmitting terminal device and the receiving terminal device.

[0340] Step S33: Determine the set of available direct communication interface frequency resources for each transmission path and the LCID corresponding to each transmission path for the network device that sends terminal services for the direct communication interface in the case of repeated transmission of PDCP of the direct communication interface;

[0341] The network device determines the LCID corresponding to each transmission path of the SLRB under the case of repeated transmission of PDCP on the direct communication interface according to the second information, and determines the set of direct communication interface frequency resources corresponding to each transmission path of the SLRB under the case of repeated transmission of PDCP on the direct communication interface according to the first information.

[0342] in:

[0343] The LCID can be determined in one of the following ways, but is not limited to:

[0344] The direct communication interface transmitting terminal can randomly select the same number of LCIDs as the direct communication interface PDCP repeated transmission path from the currently unoccupied LCIDs, and use the selected LCIDs as the LCIDs corresponding to each transmission path;

[0345] The direct communication interface transmitting terminal can randomly select an unoccupied LCID from the first LCID set as the LCID of a transmission path in the repeated transmission of the direct communication interface PDCP. Then, based on the LCID and the pre-agreed association between the LCIDs of different transmission paths in the case of repeated transmission of the direct communication interface PDCP, the LCIDs corresponding to other transmission paths are determined.

[0346] The first LCID set includes: LCIDs available for direct communication interfaces between the first terminal device and the second terminal device.

[0347] The method for determining the set of direct communication interface frequency resources corresponding to each transmission path may be, but is not limited to, one of the following:

[0348] Based on the first information, determine the set of currently available SL frequency resources, then sort the SL frequency resources in the set of SL frequency resources in order from low to high according to CBR or CO, and then allocate the SL frequency resources to each transmission path of the direct communication interface PDCP repeated transmission in turn.

[0349] Based on the first information, determine the set of available SL frequency resources. Then, based on the number of transmission paths for repeated transmission of the direct communication interface PDCP, randomly allocate the SL frequency resources in the set of SL frequency resources to the same number of groups as the number of transmission paths. Each group of SL frequency resources is used as the set of SL frequency resources corresponding to the next transmission of the repeated transmission of the direct communication interface PDCP.

[0350] Furthermore, if the transmitting terminal uses the network scheduling resource allocation mode, after the network device determines the set of direct communication interface frequency resources corresponding to each transmission path, it will further select a unique direct communication interface frequency resource for each transmission path and allocate resources for the SLRB on the selected unique direct communication interface frequency resource.

[0351] Step S34: The network device sends the set of available direct communication interface frequency resources for each transmission path and the LCID corresponding to each transmission path to the sending terminal in the case of repeated transmission of direct communication interface PDCP.

[0352] Step S35: The direct communication interface sending terminal determines the specific transmission resources used for each transmission path in the case of repeated transmission of PDCP in the direct communication interface;

[0353] If the number of direct communication interface frequency resources in the set of direct communication interface frequency resources determined in step S33 can be multiple, and the direct communication interface transmitting terminal uses the terminal self-selection resource allocation mode, then the direct communication interface transmitting terminal needs to uniquely select one direct communication interface frequency resource from each set of direct communication interface frequency resources. The specific selection method can be as follows: for the logical channel corresponding to each transmission path of the direct communication interface SLRB in the case of repeated transmission of PDCP, select a target direct communication interface frequency resource from the set of direct communication interface frequency resources corresponding to the transmission path, and use the selected unique direct communication interface frequency resource to perform data transmission on the transmission path.

[0354] Application Scenario 4: For network devices serving the transmitting terminal, determine the set of available direct communication interface frequency resources for each transmission path under PDCP repeated transmission conditions; for the transmitting terminal, determine the LCID corresponding to each transmission path under PDCP repeated transmission conditions.

[0355] like Figure 6 As shown, the main processes include the following:

[0356] Step S41: The direct communication interface sending terminal receives the second indication information sent by the direct communication interface receiving terminal through the direct communication interface;

[0357] The direct communication interface transmitting terminal receives the second indication information sent by the direct communication interface receiving terminal through the direct communication interface interface. The second indication information is used to assist the direct communication interface transmitting terminal or the network device corresponding to the direct communication interface transmitting terminal in determining the set of available direct communication interface frequency resources in the case of repeated transmission of PDCP of the direct communication interface.

[0358] The content of the second instruction information may be, but is not limited to, one or more of the following:

[0359] The receiving terminal equipment uses CBR or CO on each direct communication interface frequency resource;

[0360] The receiving terminal equipment receives the pass-through link parameters on each direct communication interface frequency resource;

[0361] The set of frequency resources corresponding to the pass-through link parameters of the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the receiving terminal equipment;

[0362] The set of frequency resources for the direct communication interface PDCP expected by the receiving terminal device, which can be used in the case of repetition.

[0363] Step S42: The direct communication interface sending terminal sends first information to the network device serving the direct communication interface sending terminal;

[0364] The first information includes, but is not limited to, one or more of the following:

[0365] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the transmitting terminal device and the receiving terminal device;

[0366] The transmitting terminal equipment uses CBR or CO on each direct communication interface frequency resource;

[0367] The transmitting terminal equipment transmits SL-CSI, SL-RSRP, or SD-RSRP on each direct communication interface frequency resource;

[0368] The set of direct communication interface frequency resources corresponding to the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the transmitting terminal device;

[0369] The set of direct communication interface frequency resources that can be used in the case of repeated transmission of PDCP by the transmitting terminal equipment;

[0370] The second instruction information received from the receiving terminal.

[0371] The first information can be obtained using existing SidelinkUEInformation or UEAssistanceInformation or new Uu interface RRC signaling.

[0372] Step S43: Determine the specific transmission resources used for each transmission path in the case of repeated transmission of PDCP in the direct communication interface for the network device that sends terminal services to the direct communication interface;

[0373] The network device determines the set of direct communication interface frequency resources corresponding to each transmission path in the case of repeated transmission of PDCP on the direct communication interface by the SLRB based on the first information.

[0374] The method for determining the set of direct communication interface frequency resources corresponding to each transmission path may be, but is not limited to, one of the following:

[0375] Based on the first information, determine the set of currently available SL frequency resources, then sort the SL frequency resources in the set of SL frequency resources in order from low to high according to CBR or CO, and then allocate the SL frequency resources to each transmission path of the direct communication interface PDCP repeated transmission in turn.

[0376] Based on the first information, determine the set of available SL frequency resources. Then, based on the number of transmission paths for repeated transmission of the direct communication interface PDCP, randomly allocate the SL frequency resources in the set of SL frequency resources to the same number of groups as the number of transmission paths. Each group of SL frequency resources is used as the set of SL frequency resources corresponding to the next transmission of the repeated transmission of the direct communication interface PDCP.

[0377] Furthermore, if the transmitting terminal uses the network scheduling resource allocation mode, after the network device determines the set of direct communication interface frequency resources corresponding to each transmission path, it will further select a unique direct communication interface frequency resource for each transmission path and allocate resources for the SLRB on the selected unique direct communication interface frequency resource.

[0378] Step S44: The sending terminal determines the LCID corresponding to each transmission path in the case of repeated transmission of PDCP on the direct communication interface;

[0379] in:

[0380] The LCID can be determined in one of the following ways, but is not limited to:

[0381] The direct communication interface transmitting terminal can randomly select the same number of LCIDs as the direct communication interface PDCP repeated transmission path from the currently unoccupied LCIDs, and use the selected LCIDs as the LCIDs corresponding to each transmission path;

[0382] The direct communication interface transmitting terminal can randomly select an unoccupied LCID from the first LCID set as the LCID of a transmission path in the repeated transmission of the direct communication interface PDCP. Then, based on the LCID and the pre-agreed association between the LCIDs of different transmission paths in the case of repeated transmission of the direct communication interface PDCP, the LCIDs corresponding to other transmission paths are determined.

[0383] The first LCID set includes: LCIDs available for direct communication interfaces between the first terminal device and the second terminal device.

[0384] Step S45: The network device sends the set of available direct communication interface frequency resources for each transmission path in the case of repeated transmission of direct communication interface PDCP to the sending terminal.

[0385] Step S46: The direct communication interface sending terminal determines the specific transmission resources used for each transmission path in the case of repeated transmission of PDCP in the direct communication interface;

[0386] After receiving the configuration information, the direct communication interface transmitting terminal associates its determined LCID with the direct communication interface frequency resources or frequency resource set used by each transmission path.

[0387] If the number of direct communication interface frequency resources in the set of direct communication interface frequency resources determined in step S43 can be multiple, and the direct communication interface transmitting terminal uses the terminal self-selection resource allocation mode, then the direct communication interface transmitting terminal needs to uniquely select one direct communication interface frequency resource from each set of direct communication interface frequency resources. The specific selection method can be as follows: for the logical channel corresponding to each transmission path of the direct communication interface SLRB in the case of repeated transmission of PDCP, select a target direct communication interface frequency resource from the set of direct communication interface frequency resources corresponding to the transmission path, and use the selected unique direct communication interface frequency resource to perform data transmission on the transmission path.

[0388] like Figure 7 As shown, this embodiment of the invention provides a frequency resource acquisition device 700, applied to a first terminal device, comprising:

[0389] The first acquisition unit 701 is used to acquire, based on the first information, the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP);

[0390] The first information includes at least one of the following:

[0391] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device;

[0392] The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device;

[0393] The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

[0394] Optionally, the first acquisition unit 701 is configured to:

[0395] The first information is sent to the network device serving the first terminal device, and the network device sends a set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmissions, wherein the set of direct communication interface frequency resources is determined by the network device based on the first information; or

[0396] Based on the first information, determine the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission.

[0397] Optionally, the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission includes: the set of direct communication interface frequency resources corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) in the case of repeated PDCP transmission.

[0398] Optionally, the number of frequency resource sets for the direct communication interface is the same as the number of transmission paths in the case of repeated PDCP transmission.

[0399] Optionally, the direct communication interface frequency resources in the direct communication interface frequency resource set include:

[0400] Direct communication interface carrier; and / or

[0401] The bandwidth portion of the direct communication interface (BWP).

[0402] Optionally, the first acquisition unit 701 is configured to:

[0403] The first information is sent to the network device via at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0404] Optionally, the device further includes:

[0405] The second acquisition unit is used to acquire, based on the second information, the logical channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of repeated PDCP transmission;

[0406] The second information includes at least one of the following:

[0407] The LCID available to the first terminal device under a unicast connection between the first terminal device and the second terminal device;

[0408] The recommended LCID for repeated transmission of the PDCP direct communication interface in a unicast connection between the first terminal device and the second terminal device;

[0409] The first terminal device reserves LCID for repeated transmission of the PDCP on the direct communication interface under the unicast connection between the first terminal device and the second terminal device.

[0410] Optionally, the second acquisition unit is configured to:

[0411] The second information is sent to the network device serving the first terminal device, and the network device sends the LCID corresponding to each transmission path in the case of repeated PDCP transmission to the SLRB, wherein the LCID is determined by the network device serving the first terminal device based on the second information; or

[0412] Based on the second information, determine the LCID corresponding to each transmission path in the case of repeated PDCP transmission by SLRB.

[0413] Optionally, the second acquisition unit is configured to:

[0414] Randomly select N LCIDs from the available LCIDs, and use these N LCIDs as the LCIDs for each transmission path. Each LCID corresponds one-to-one with a transmission path, and N equals the number of transmission paths in the case of repeated transmissions in the direct communication interface PDCP; or

[0415] A first LCID is randomly selected from the first LCID set as the LCID of a transmission path in the PDCP repetitive transmission of the direct communication interface. Based on the correlation between the first LCID and the LCIDs of different transmission paths, the LCIDs of other transmission paths in the PDCP repetitive transmission of the direct communication interface are determined. The first LCID is an available LCID. The first LCID set includes: LCIDs available for the direct communication interfaces of the first terminal device and the second terminal device.

[0416] Optionally, the second acquisition unit is configured to:

[0417] The second information is sent to the network device via at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0418] Optionally, the device further includes:

[0419] The first transmitting unit is used to send the set of available direct communication interface frequency resources for each transmission path under the PDCP repeated transmission condition to the second terminal device through the PDCP repeated transmission configuration signaling or the PDCP repeated transmission activation signaling of the direct communication interface.

[0420] Optionally, the direct communication interface PDCP repeat transmission activation signaling includes at least one of the following: RRC signaling, Media Access Control Unit (MAC CE) signaling, or physical layer signaling.

[0421] Optionally, after the first execution unit determines the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP) based on the first information, the apparatus further includes:

[0422] The second sending unit is used to send the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission to the network device if the first terminal device adopts the network configuration resource allocation mode.

[0423] Optionally, the set of direct communication interface frequency resources may include one or more direct communication interface frequency resources.

[0424] Optionally, if the set of direct communication interface frequency resources includes at least two frequency resources, the apparatus further includes:

[0425] The selection unit is used to select a target direct communication interface frequency resource from the set of direct communication interface frequency resources corresponding to each transmission path of the direct communication interface SLRB for data transmission in the case of repeated transmission of PDCP.

[0426] Optionally, the first indication information includes at least one of the following:

[0427] The first terminal device has a channel occupancy ratio (CBR) or channel occupancy (CO) on each direct communication interface frequency resource;

[0428] The first terminal device has direct communication interface parameters on each direct communication interface frequency resource, the direct communication interface parameters 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;

[0429] The set of direct communication interface frequency resources corresponding to the transmission path in the case of repeated transmission of PDCP by the first terminal device;

[0430] The set of direct communication interface frequency resources that the first terminal device expects to be available in the case of repeated transmission of the direct communication interface PDCP.

[0431] Optionally, the second indication information includes at least one of the following:

[0432] The second terminal device has a CBR or CO on each direct communication interface frequency resource;

[0433] The pass-through link parameters of the second terminal device on each direct communication interface frequency resource;

[0434] The set of frequency resources corresponding to the direct link parameters of the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the second terminal device;

[0435] The set of frequency resources for the direct communication interface PDCP that the second terminal device expects to use in the case of repeated direct communication.

[0436] It should be noted that this device embodiment corresponds one-to-one with the above method embodiments. All implementation methods in the above method embodiments are applicable to this device embodiment and can achieve the same technical effect.

[0437] It should be noted that the division of units in the embodiments of this application is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0438] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0439] like Figure 8 As shown, this embodiment of the invention also provides a terminal device, which is a first terminal device, including a processor 800, a transceiver 810, a memory 820, and a program stored in the memory 820 and executable on the processor 800; wherein, the transceiver 810 is connected to the processor 800 and the memory 820 via a bus interface, and the processor 800 is used to read the program in the memory and execute the following processes:

[0440] Based on the first information, obtain the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP);

[0441] The first information includes at least one of the following:

[0442] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device;

[0443] The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device;

[0444] The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

[0445] Transceiver 810 is used to receive and send data under the control of processor 800.

[0446] Among them, Figure 8In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 800 and memory represented by memory 820 together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 810 can be multiple components, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, the user interface 830 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0447] The processor 800 is responsible for managing the bus architecture and general processing, while the memory 820 can store the data used by the processor 800 during operation.

[0448] Optionally, the processor 800 can be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

[0449] The processor executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0450] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0451] The first information is sent to the network device serving the first terminal device, and the network device sends a set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmissions, wherein the set of direct communication interface frequency resources is determined by the network device based on the first information; or

[0452] Based on the first information, determine the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission.

[0453] Optionally, the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission includes: the set of direct communication interface frequency resources corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) in the case of repeated PDCP transmission.

[0454] Optionally, the number of frequency resource sets for the direct communication interface is the same as the number of transmission paths in the case of repeated PDCP transmission.

[0455] Optionally, the direct communication interface frequency resources in the direct communication interface frequency resource set include:

[0456] Direct communication interface carrier; and / or

[0457] The bandwidth portion of the direct communication interface (BWP).

[0458] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0459] The first information is sent to the network device via at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0460] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0461] Based on the second information, obtain the Logical Channel Identifier (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) under the case of repeated PDCP transmission;

[0462] The second information includes at least one of the following:

[0463] The LCID available to the first terminal device under a unicast connection between the first terminal device and the second terminal device;

[0464] The recommended LCID for repeated transmission of the PDCP direct communication interface in a unicast connection between the first terminal device and the second terminal device;

[0465] The first terminal device reserves LCID for repeated transmission of the PDCP on the direct communication interface under the unicast connection between the first terminal device and the second terminal device.

[0466] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0467] The second information is sent to the network device serving the first terminal device, and the network device sends the LCID corresponding to each transmission path in the case of repeated PDCP transmission to the SLRB, wherein the LCID is determined by the network device serving the first terminal device based on the second information; or

[0468] Based on the second information, determine the LCID corresponding to each transmission path in the case of repeated PDCP transmission by SLRB.

[0469] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0470] Randomly select N LCIDs from the available LCIDs, and use these N LCIDs as the LCIDs for each transmission path. Each LCID corresponds one-to-one with a transmission path, and N equals the number of transmission paths in the case of repeated transmissions in the direct communication interface PDCP; or

[0471] A first LCID is randomly selected from the first LCID set as the LCID of a transmission path in the PDCP repetitive transmission of the direct communication interface. Based on the correlation between the first LCID and the LCIDs of different transmission paths, the LCIDs of other transmission paths in the PDCP repetitive transmission of the direct communication interface are determined. The first LCID is an available LCID. The first LCID set includes: LCIDs available for the direct communication interfaces of the first terminal device and the second terminal device.

[0472] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0473] The second information is sent to the network device via at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0474] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0475] The set of available direct communication interface frequency resources for each transmission path under PDCP repeated transmission is sent to the second terminal device via PDCP repeated transmission configuration signaling or PDCP repeated transmission activation signaling through the direct communication interface.

[0476] Optionally, the direct communication interface PDCP repeat transmission activation signaling includes at least one of the following: RRC signaling, Media Access Control Unit (MAC CE) signaling, or physical layer signaling.

[0477] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0478] If the first terminal device adopts the network configuration resource allocation mode, it sends the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission to the network device.

[0479] Optionally, the set of direct communication interface frequency resources may include one or more direct communication interface frequency resources.

[0480] Optionally, if the set of direct communication interface frequency resources includes at least two frequency resources, the processor, for reading the computer program in the memory, further performs the following operations:

[0481] For each logical channel corresponding to the transmission path of the direct communication interface SLRB under the case of repeated PDCP transmission, a target direct communication interface frequency resource is selected from the set of direct communication interface frequency resources corresponding to the transmission path for data transmission.

[0482] Optionally, the first indication information includes at least one of the following:

[0483] The first terminal device has a channel occupancy ratio (CBR) or channel occupancy (CO) on each direct communication interface frequency resource;

[0484] The first terminal device has direct communication interface parameters on each direct communication interface frequency resource, the direct communication interface parameters 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;

[0485] The set of direct communication interface frequency resources corresponding to the transmission path in the case of repeated transmission of PDCP by the first terminal device;

[0486] The set of direct communication interface frequency resources that the first terminal device expects to be available in the case of repeated transmission of the direct communication interface PDCP.

[0487] Optionally, the second indication information includes at least one of the following:

[0488] The second terminal device has a CBR or CO on each direct communication interface frequency resource;

[0489] The pass-through link parameters of the second terminal device on each direct communication interface frequency resource;

[0490] The set of frequency resources corresponding to the direct link parameters of the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the second terminal device;

[0491] The set of frequency resources for the direct communication interface PDCP that the second terminal device expects to use in the case of repeated direct communication.

[0492] It should be noted that the terminal device provided in this embodiment of the invention can implement all the method steps implemented in the above method embodiment and achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0493] This invention also provides a computer-readable storage medium storing a computer program thereon, wherein the computer program, when executed by a processor, implements the steps of a frequency resource acquisition method applied to a first terminal device. The processor-readable storage medium can be any available medium or data storage device accessible to the processor, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs), etc.).

[0494] like Figure 9 As shown, this embodiment of the invention provides a frequency resource determination device 900, applied to a network device, comprising:

[0495] The first determining unit 901 is used to determine, based on the first information, the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP) for the first terminal device;

[0496] The first information includes at least one of the following:

[0497] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device;

[0498] The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device;

[0499] The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

[0500] Optionally, the device further includes:

[0501] The first receiving unit is used to receive the first information sent by the first terminal device.

[0502] Optionally, the first receiving unit is configured to:

[0503] The first information sent by the first terminal device is received through at least one of the following: terminal information via direct communication interface, terminal auxiliary information, and radio resource control (RRC) signaling via Uu interface.

[0504] Optionally, it also includes:

[0505] The second determining unit is used to determine the Logical Channel Identifier (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) under the case of repeated PDCP transmission, based on the second information.

[0506] The second information includes at least one of the following:

[0507] The LCID available to the first terminal device under a unicast connection between the first terminal device and the second terminal device;

[0508] The recommended LCID for repeated transmission of the PDCP direct communication interface in a unicast connection between the first terminal device and the second terminal device;

[0509] The first terminal device reserves LCID for repeated transmission of the PDCP on the direct communication interface under the unicast connection between the first terminal device and the second terminal device.

[0510] Optionally, the second determining unit is configured to:

[0511] Randomly select N LCIDs from the available LCIDs, and use these N LCIDs as the LCIDs for each transmission path. Each LCID corresponds one-to-one with a transmission path, and N equals the number of transmission paths in the case of repeated transmissions in the direct communication interface PDCP; or

[0512] A first LCID is randomly selected from the first LCID set as the LCID of a transmission path in the PDCP repetitive transmission of the direct communication interface. Based on the correlation between the first LCID and the LCIDs of different transmission paths, the LCIDs of other transmission paths in the PDCP repetitive transmission of the direct communication interface are determined. The first LCID is an available LCID. The first LCID set includes: LCIDs available for the direct communication interfaces of the first terminal device and the second terminal device.

[0513] Optionally, the device further includes:

[0514] The second receiving unit is used to receive the second information sent by the first terminal device.

[0515] Optionally, the second receiving unit includes:

[0516] The second information sent by the first terminal device is received through at least one of the following: terminal information via direct communication interface, terminal auxiliary information, and radio resource control (RRC) signaling via Uu interface.

[0517] Optionally, the device further includes:

[0518] The third transmitting unit is used to send the Logical Channel Identifier (LCID) corresponding to each transmission path of the SLRB in the case of repeated PDCP transmission to the first terminal device.

[0519] Optionally, the device further includes:

[0520] The fourth transmitting unit is used to send the set of available direct communication interface frequency resources for each transmission path under the PDCP repeated transmission condition to the first terminal device through the PDCP repeated transmission configuration signaling or the PDCP repeated transmission activation signaling of the direct communication interface.

[0521] Optionally, the direct communication interface PDCP repeat transmission activation signaling includes at least one of the following: RRC signaling, Media Access Control Unit (MAC CE) signaling, or physical layer signaling.

[0522] Optionally, the first indication information includes at least one of the following:

[0523] The first terminal device has a channel occupancy ratio (CBR) or channel occupancy (CO) on each direct communication interface frequency resource;

[0524] The first terminal device has direct communication interface parameters on each direct communication interface frequency resource, the direct communication interface parameters 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;

[0525] The set of direct communication interface frequency resources corresponding to the transmission path in the case of repeated transmission of PDCP by the first terminal device;

[0526] The set of direct communication interface frequency resources that the first terminal device expects to be available in the case of repeated transmission of the direct communication interface PDCP.

[0527] Optionally, the second indication information includes at least one of the following:

[0528] The second terminal device has a CBR or CO on each direct communication interface frequency resource;

[0529] The pass-through link parameters of the second terminal device on each direct communication interface frequency resource;

[0530] The set of frequency resources corresponding to the direct link parameters of the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the second terminal device;

[0531] The set of frequency resources for the direct communication interface PDCP that the second terminal device expects to use in the case of repeated direct communication.

[0532] Optionally, the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission includes: the set of direct communication interface frequency resources corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) in the case of repeated PDCP transmission.

[0533] Optionally, the number of frequency resource sets for the direct communication interface is the same as the number of transmission paths in the case of repeated PDCP transmission.

[0534] Optionally, the direct communication interface frequency resources in the direct communication interface frequency resource set include:

[0535] Direct communication interface carrier; and / or

[0536] The bandwidth portion of the direct communication interface (BWP).

[0537] It should be noted that this device embodiment corresponds one-to-one with the above method embodiments. All implementation methods in the above method embodiments are applicable to this device embodiment and can achieve the same technical effect.

[0538] It should be noted that the division of units in the embodiments of this application is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0539] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0540] like Figure 10 As shown, this embodiment of the invention also provides a network device, including a processor 1000, a transceiver 1010, a memory 1020, and a program stored in the memory 1020 and executable on the processor 1000; wherein the transceiver 1010 is connected to the processor 1000 and the memory 1020 via a bus interface, and the processor 1000 is used to read the program in the memory and execute the following processes:

[0541] Based on the first information, determine the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP) for the first terminal device;

[0542] The first information includes at least one of the following:

[0543] The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device;

[0544] The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device;

[0545] The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

[0546] Transceiver 1010 is used to receive and send data under the control of processor 1000.

[0547] Among them, Figure 10In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1000 and memory represented by memory 1020 together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 1010 can be multiple components, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, the user interface 1030 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0548] The processor 1000 is responsible for managing the bus architecture and general processing, while the memory 1020 can store the data used by the processor 1000 when performing operations.

[0549] Optionally, the processor 1000 can be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

[0550] The processor executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0551] Optionally, the processor, for reading the computer program in the memory, also performs the following operations:

[0552] The transceiver receives the first information sent by the first terminal device.

[0553] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0554] The transceiver receives first information sent by the first terminal device through at least one of the following: terminal information via the direct communication interface, terminal auxiliary information, and radio resource control (RRC) signaling via the Uu interface.

[0555] Optionally, the processor, for reading the computer program in the memory, also performs the following operations:

[0556] Based on the second information, determine the Logical Channel Identifier (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) in the case of repeated PDCP transmission;

[0557] The second information includes at least one of the following:

[0558] The LCID available to the first terminal device under a unicast connection between the first terminal device and the second terminal device;

[0559] The recommended LCID for repeated transmission of the PDCP direct communication interface in a unicast connection between the first terminal device and the second terminal device;

[0560] The first terminal device reserves LCID for repeated transmission of the PDCP on the direct communication interface under the unicast connection between the first terminal device and the second terminal device.

[0561] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0562] Randomly select N LCIDs from the available LCIDs, and use these N LCIDs as the LCIDs for each transmission path. Each LCID corresponds one-to-one with a transmission path, and N equals the number of transmission paths in the case of repeated transmissions in the direct communication interface PDCP; or

[0563] A first LCID is randomly selected from the first LCID set as the LCID of a transmission path in the PDCP repetitive transmission of the direct communication interface. Based on the correlation between the first LCID and the LCIDs of different transmission paths, the LCIDs of other transmission paths in the PDCP repetitive transmission of the direct communication interface are determined. The first LCID is an available LCID. The first LCID set includes: LCIDs available for the direct communication interfaces of the first terminal device and the second terminal device.

[0564] Optionally, the processor, for reading the computer program in the memory, also performs the following operations:

[0565] Receive the second information sent by the first terminal device.

[0566] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0567] The transceiver receives second information sent by the first terminal device via at least one of the following: terminal information via the direct communication interface, terminal auxiliary information, and radio resource control (RRC) signaling via the Uu interface.

[0568] Optionally, the processor, for reading the computer program in the memory, also performs the following operations:

[0569] The transceiver sends the Logical Channel Identifier (LCID) corresponding to each transmission path of the SLRB in the case of repeated PDCP transmission to the first terminal device.

[0570] Optionally, the processor, for reading the computer program in the memory, also performs the following operations:

[0571] The transceiver sends the set of available direct communication interface frequency resources for each transmission path under PDCP repeated transmission conditions to the first terminal device via PDCP repeated transmission configuration signaling or PDCP repeated transmission activation signaling through the direct communication interface.

[0572] Optionally, the direct communication interface PDCP repeat transmission activation signaling includes at least one of the following: RRC signaling, Media Access Control Unit (MAC CE) signaling, or physical layer signaling.

[0573] Optionally, the first indication information includes at least one of the following:

[0574] The first terminal device has a channel occupancy ratio (CBR) or channel occupancy (CO) on each direct communication interface frequency resource;

[0575] The first terminal device has direct communication interface parameters on each direct communication interface frequency resource, the direct communication interface parameters 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;

[0576] The set of direct communication interface frequency resources corresponding to the transmission path in the case of repeated transmission of PDCP by the first terminal device;

[0577] The set of direct communication interface frequency resources that the first terminal device expects to be available in the case of repeated transmission of the direct communication interface PDCP.

[0578] Optionally, the second indication information includes at least one of the following:

[0579] The second terminal device has a CBR or CO on each direct communication interface frequency resource;

[0580] The pass-through link parameters of the second terminal device on each direct communication interface frequency resource;

[0581] The set of frequency resources corresponding to the direct link parameters of the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the second terminal device;

[0582] The set of frequency resources for the direct communication interface PDCP that the second terminal device expects to use in the case of repeated direct communication.

[0583] Optionally, the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission includes: the set of direct communication interface frequency resources corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) in the case of repeated PDCP transmission.

[0584] Optionally, the number of frequency resource sets for the direct communication interface is the same as the number of transmission paths in the case of repeated PDCP transmission.

[0585] Optionally, the direct communication interface frequency resources in the direct communication interface frequency resource set include:

[0586] Direct communication interface carrier; and / or

[0587] The bandwidth portion of the direct communication interface (BWP).

[0588] It should be noted that the network device provided in this embodiment of the invention can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0589] This invention also provides a computer-readable storage medium storing a computer program thereon, wherein the computer program, when executed by a processor, implements the steps of a frequency resource determination method applied to a network device. The processor-readable storage medium can be any available medium or data storage device accessible to the processor, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs), etc.).

[0590] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0591] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0592] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0593] These processors can execute instructions that can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable device for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0594] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for acquiring frequency resources, characterized in that, Executed by the first terminal device, including: Based on the first information, obtain the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP); The first information includes at least one of the following: The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device; The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device; The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

2. The method according to claim 1, characterized in that, The step of obtaining the set of available direct communication interface frequency resources for each transmission path under the case of repeated transmission of Packet Data Convergence Protocol (PDCP) based on the first information includes: The first information is sent to the network device serving the first terminal device, and the network device sends a set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmissions, wherein the set of direct communication interface frequency resources is determined by the network device based on the first information; or Based on the first information, determine the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission.

3. The method according to claim 1 or 2, characterized in that, The set of direct communication interface frequency resources available for each transmission path under the PDCP repeated transmission scenario includes: the set of direct communication interface frequency resources corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) under the PDCP repeated transmission scenario.

4. The method according to claim 1 or 2, characterized in that, The number of frequency resources for the direct communication interface is the same as the number of transmission paths in the case of repeated PDCP transmission.

5. The method according to claim 1 or 2, characterized in that, The direct communication interface frequency resources in the set of direct communication interface frequency resources include: Direct communication interface carrier; and / or The bandwidth portion of the direct communication interface (BWP).

6. The method according to claim 2, characterized in that, Sending the first information to the network device serving the first terminal device includes: The first information is sent to the network device via at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

7. The method according to claim 1, characterized in that, Also includes: Based on the second information, obtain the Logical Channel Identifier (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) under the case of repeated PDCP transmission; The second information includes at least one of the following: The LCID available to the first terminal device under a unicast connection between the first terminal device and the second terminal device; The recommended LCID for repeated transmission of the PDCP direct communication interface in a unicast connection between the first terminal device and the second terminal device; The first terminal device reserves LCID for repeated transmission of the PDCP on the direct communication interface under the unicast connection between the first terminal device and the second terminal device.

8. The method according to claim 7, characterized in that, The step of obtaining the LCID corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) under PDCP retransmission based on the second information includes: The second information is sent to the network device serving the first terminal device, and the network device sends the LCID corresponding to each transmission path in the case of repeated PDCP transmission to the SLRB, wherein the LCID is determined by the network device serving the first terminal device based on the second information; or Based on the second information, determine the LCID corresponding to each transmission path in the case of repeated PDCP transmission by SLRB.

9. The method according to claim 8, characterized in that, The step of determining the LCID corresponding to each transmission path of SLRB in the case of repeated PDCP transmission based on the second information includes: Randomly select N LCIDs from the available LCIDs, and use these N LCIDs as the LCIDs for each transmission path. Each LCID corresponds one-to-one with a transmission path, and N equals the number of transmission paths in the case of repeated transmissions in the direct communication interface PDCP; or A first LCID is randomly selected from the first LCID set as the LCID of a transmission path in the PDCP repetitive transmission of the direct communication interface. Based on the correlation between the first LCID and the LCIDs of different transmission paths, the LCIDs of other transmission paths in the PDCP repetitive transmission of the direct communication interface are determined. The first LCID is an available LCID. The first LCID set includes: LCIDs available for the direct communication interfaces of the first terminal device and the second terminal device.

10. The method according to claim 8, characterized in that, Sending the second information to the network device serving the first terminal device includes: The second information is sent to the network device via at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

11. The method according to claim 1, characterized in that, Also includes: The set of available direct communication interface frequency resources for each transmission path under PDCP repeated transmission is sent to the second terminal device via PDCP repeated transmission configuration signaling or PDCP repeated transmission activation signaling through the direct communication interface.

12. The method according to claim 11, characterized in that, The direct communication interface PDCP repeat transmission activation signaling includes at least one of the following: RRC signaling, Media Access Control Unit (MACCE) or physical layer signaling.

13. The method according to claim 2, characterized in that, After determining the set of available direct communication interface frequency resources for each transmission path in the case of repeated PDCP transmissions based on the first information, the method further includes: If the first terminal device adopts the network configuration resource allocation mode, it sends the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission to the network device.

14. The method according to claim 1, characterized in that, The set of direct communication interface frequency resources includes one or more direct communication interface frequency resources.

15. The method according to claim 1, characterized in that, 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 the transmission path of the direct communication interface SLRB under the case of repeated PDCP transmission, a target direct communication interface frequency resource is selected from the set of direct communication interface frequency resources corresponding to the transmission path for data transmission.

16. The method according to claim 1, characterized in that, The first indication information includes at least one of the following: The first terminal device has a channel occupancy ratio (CBR) or channel occupancy (CO) on each direct communication interface frequency resource; The first terminal device has direct communication interface parameters on each direct communication interface frequency resource, the direct communication interface parameters 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; The set of direct communication interface frequency resources corresponding to the transmission path in the case of repeated transmission of PDCP by the first terminal device; The set of direct communication interface frequency resources that the first terminal device expects to be available in the case of repeated transmission of the direct communication interface PDCP.

17. The method according to claim 1, characterized in that, The second instruction information includes at least one of the following: The second terminal device has a CBR or CO on each direct communication interface frequency resource; The pass-through link parameters of the second terminal device on each direct communication interface frequency resource; The set of frequency resources corresponding to the direct link parameters of the transmission path in the case of repeated transmission of the direct communication interface PDCP expected by the second terminal device; The set of frequency resources for the direct communication interface PDCP that the second terminal device expects to use in the case of repeated direct communication.

18. A method for determining frequency resources, characterized in that, Performed by network devices, including: Based on the first information, determine the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP) for the first terminal device; The first information includes at least one of the following: The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device; The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device; The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

19. The method according to claim 18, characterized in that, Also includes: Receive the first information sent by the first terminal device.

20. The method according to claim 19, characterized in that, The first information received from the first terminal device includes: The first information sent by the first terminal device is received through at least one of the following: terminal information via direct communication interface, terminal auxiliary information, and radio resource control (RRC) signaling via Uu interface.

21. The method according to claim 18, characterized in that, Also includes: Based on the second information, determine the Logical Channel Identifier (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) in the case of repeated PDCP transmission; The second information includes at least one of the following: The LCID available to the first terminal device under a unicast connection between the first terminal device and the second terminal device; The recommended LCID for repeated transmission of the PDCP direct communication interface in a unicast connection between the first terminal device and the second terminal device; The first terminal device reserves LCID for repeated transmission of the PDCP on the direct communication interface under the unicast connection between the first terminal device and the second terminal device.

22. The method according to claim 21, characterized in that, The step of determining the Logical Channel Identifier (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) under PDCP retransmission based on the second information includes: Randomly select N LCIDs from the available LCIDs, and use these N LCIDs as the LCIDs for each transmission path. Each LCID corresponds one-to-one with a transmission path, and N equals the number of transmission paths in the case of repeated transmissions in the direct communication interface PDCP; or A first LCID is randomly selected from the first LCID set as the LCID of a transmission path in the PDCP repetitive transmission of the direct communication interface. Based on the correlation between the first LCID and the LCIDs of different transmission paths, the LCIDs of other transmission paths in the PDCP repetitive transmission of the direct communication interface are determined. The first LCID is an available LCID. The first LCID set includes: LCIDs available for the direct communication interfaces of the first terminal device and the second terminal device.

23. The method according to claim 21, characterized in that, Also includes: Receive the second information sent by the first terminal device.

24. The method according to claim 23, characterized in that, The receipt of the second information sent by the first terminal device includes: The second information sent by the first terminal device is received through at least one of the following: terminal information via direct communication interface, terminal auxiliary information, and radio resource control (RRC) signaling via Uu interface.

25. The method according to claim 21, characterized in that, Also includes: The SLRB sends the Logical Channel Identifier (LCID) corresponding to each transmission path in the case of repeated PDCP transmission to the first terminal device.

26. The method according to claim 18, characterized in that, Also includes: The set of available direct communication interface frequency resources for each transmission path under PDCP repeated transmission is sent to the first terminal device via PDCP repeated transmission configuration signaling or PDCP repeated transmission activation signaling through the direct communication interface.

27. The method according to claim 26, characterized in that, The direct communication interface PDCP repeat transmission activation signaling includes at least one of the following: RRC signaling, Media Access Control Unit (MACCE) or physical layer signaling.

28. A terminal device, wherein the terminal device is a first terminal device, characterized in that, Includes memory, transceiver, and processor: A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: Based on the first information, obtain the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP); The first information includes at least one of the following: The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device; The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device; The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

29. The terminal device according to claim 28, characterized in that, The processor is configured to read the computer program in the memory and perform the following operations: The first information is sent to the network device serving the first terminal device, and the network device sends a set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmissions, wherein the set of direct communication interface frequency resources is determined by the network device based on the first information; or Based on the first information, determine the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission.

30. The terminal device according to claim 29, characterized in that, The processor is configured to read the computer program in the memory and perform the following operations: The first information is sent to the network device via at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

31. The terminal device according to claim 28, characterized in that, The processor, for reading the computer program in the memory, also performs the following operations: Based on the second information, obtain the Logical Channel Identifier (LCID) corresponding to each transmission path of the Direct Communication Interface Radio Bearer (SLRB) under the case of repeated PDCP transmission; The second information includes at least one of the following: The LCID available to the first terminal device under a unicast connection between the first terminal device and the second terminal device; The recommended LCID for repeated transmission of the PDCP direct communication interface in a unicast connection between the first terminal device and the second terminal device; The first terminal device reserves LCID for repeated transmission of the PDCP on the direct communication interface under the unicast connection between the first terminal device and the second terminal device.

32. The terminal device according to claim 31, characterized in that, The processor is configured to read the computer program in the memory and perform the following operations: The second information is sent to the network device serving the first terminal device, and the network device sends the LCID corresponding to each transmission path in the case of repeated PDCP transmission to the SLRB, wherein the LCID is determined by the network device serving the first terminal device based on the second information; or Based on the second information, determine the LCID corresponding to each transmission path in the case of repeated PDCP transmission by SLRB.

33. The terminal device according to claim 32, characterized in that, The processor is configured to read the computer program in the memory and perform the following operations: Randomly select N LCIDs from the available LCIDs, and use these N LCIDs as the LCIDs for each transmission path. Each LCID corresponds one-to-one with a transmission path, and N equals the number of transmission paths in the case of repeated transmissions in the direct communication interface PDCP; or A first LCID is randomly selected from the first LCID set as the LCID of a transmission path in the PDCP repetitive transmission of the direct communication interface. Based on the correlation between the first LCID and the LCIDs of different transmission paths, the LCIDs of other transmission paths in the PDCP repetitive transmission of the direct communication interface are determined. The first LCID is an available LCID. The first LCID set includes: LCIDs available for the direct communication interfaces of the first terminal device and the second terminal device.

34. The terminal device according to claim 32, characterized in that, The processor, for reading the computer program in the memory, also performs the following operations: The second information is sent to the network device via at least one of the following: direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

35. The terminal device according to claim 28, characterized in that, The processor, for reading the computer program in the memory, also performs the following operations: The set of available direct communication interface frequency resources for each transmission path under PDCP repeated transmission is sent to the second terminal device via PDCP repeated transmission configuration signaling or PDCP repeated transmission activation signaling through the direct communication interface.

36. The terminal device according to claim 28, characterized in that, The processor, for reading the computer program in the memory, also performs the following operations: If the first terminal device adopts the network configuration resource allocation mode, it sends the set of direct communication interface frequency resources available for each transmission path in the case of repeated PDCP transmission to the network device.

37. The terminal device according to claim 28, characterized in that, The processor, for reading the computer program in the memory, also performs the following operations: For each logical channel corresponding to the transmission path of the direct communication interface SLRB under the case of repeated PDCP transmission, a target direct communication interface frequency resource is selected from the set of direct communication interface frequency resources corresponding to the transmission path for data transmission.

38. A network device, characterized in that, Includes memory, transceiver, and processor: A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: Based on the first information, determine the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP) for the first terminal device; The first information includes at least one of the following: The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device; The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device; The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

39. A frequency resource acquisition device, applied to a first terminal device, characterized in that, include: The first acquisition unit is used to acquire, based on the first information, the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP); The first information includes at least one of the following: The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device; The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device; The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

40. A frequency resource determination device, applied to network equipment, characterized in that, include: The first determining unit is configured to determine, based on the first information, the set of direct communication interface frequency resources available for each transmission path in the case of repeated transmission of Packet Data Convergence Protocol (PDCP) for the first terminal device; The first information includes at least one of the following: The combination of the Layer 2 source address and Layer 2 destination address of the unicast connection between the first terminal device and the second terminal device; The first indication information is the indication information of the direct communication interface frequency resources determined by the first terminal device; The second indication information is the indication information of the direct communication interface frequency resources received by the first terminal device from the second terminal device.

41. A processor-readable storage medium, characterized in that, The processor-readable storage medium stores a computer program for causing the processor to perform the method according to any one of claims 1 to 27.

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