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

Abstract

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

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This disclosure claims priority to a Chinese patent application bearing application number 202211185611.9 and entitled "Frequency resource acquisition method, determination method, device, terminal equipment, and network equipment," filed with the China Patent Office on September 27, 2022, the entire contents of which are incorporated herein by reference. The present disclosure relates to the field of communications technology, and in particular to a frequency resource acquisition method, a determination method, an apparatus, a terminal device, and a network device. [Background technology]

[0002] For the direct communication link (Sidelink: SL) interface (also called the direct communication interface (SL interface)) used in the Long Term Evolution (LTE) technology, wireless transmission is mainly performed in a broadcast manner, so the network configures the Proximity Service Per-Packet Reliability (PPPR) threshold and the available carrier set of the transmission path corresponding to the direct communication interface L2 destination address through the system information block (SIB) or provisioning information. Since the transmitting and receiving terminals do not have an SL unicast connection, the SL receiving terminal does not provide any auxiliary information to the SL transmitting terminal. Therefore, the configuration of the available carrier set of the transmission path corresponding to the direct communication interface L2 destination address remains unchanged and fixed. Summary of the Invention [Problem to be solved by the invention]

[0003] The embodiments of the present disclosure provide a frequency resource acquisition method, a frequency resource determination method, a frequency resource determination device, a terminal device, and a network device, thereby solving the problem of how to improve the gain of SL PDCP duplication by configuring SL frequency resource sets corresponding to each transmission path of SL PDCP duplication. [Means for solving the problem]

[0004] In order to solve the above technical problem, an embodiment of the present disclosure provides a frequency resource acquisition method performed by a first terminal device, the method comprising: According to the first information, obtaining an available direct communication interface frequency resource set for each transmission path in case of overlapping transmission according to Packet Data Convergence Protocol (PDCP); The first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is indication information of a direct communication interface frequency resource determined by a first terminal device; and and second indication information, which is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0005] Optionally, obtaining an available direct communication interface frequency resource set for each transmission path in case of overlapping transmission according to Packet Data Convergence Protocol (PDCP) based on the first information includes: Sending the first information to a network device serving a first terminal device, and receiving available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission according to PDCP sent from the network device, wherein the direct communication interface frequency resource sets are determined by the network device based on the first information; or The method includes determining an available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission according to PDCP based on the first information.

[0006] Optionally, the available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission using PDCP include direct communication interface frequency resource sets corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission using PDCP.

[0007] Optionally, the number of the direct communication interface frequency resource sets is the same as the number of transmission paths in the case of overlapping transmission according to PDCP.

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

[0009] Optionally, transmitting the first information to a network device providing a service to the first terminal device includes: and transmitting the first information to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0010] Optionally, the method further comprises: The method further includes obtaining, based on the second information, a logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP; The second information is an available LCID of a first terminal device in a unicast connection between the first terminal device and a second terminal device; an LCID for PDCP duplicate transmission on a direct communication interface recommended for a first terminal device in a unicast connection between the first terminal device and a second terminal device; and an LCID reserved for PDCP-based duplicate transmission from the first terminal device on the direct communication interface in a unicast connection between the first terminal device and the second terminal device.

[0011] Optionally, obtaining an LCID corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP based on the first information includes: Sending the second information to a network device providing a service to a first terminal device, and receiving LCIDs corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP sent from the network device, wherein the LCIDs are determined by the network device providing a service to the first terminal device based on the second information; or The method includes determining, based on the second information, an LCID corresponding to each transmission path of the SLRB in the case of overlapping transmission according to PDCP.

[0012] Optionally, determining an LCID corresponding to each transmission path of the SLRB in the case of overlapping transmission according to the second information includes: Randomly selecting N LCIDs from available LCIDs, each of the N LCIDs corresponding to a transmission path, where the LCIDs correspond one-to-one with the transmission paths, and N is equal to the number of transmission paths of the direct communication interface in the case of PDCP overlap transmission; or The method includes randomly selecting a first LCID from a first LCID set as an LCID of one transmission path of the direct communication interface in the case of overlapping transmission using PDCP, and determining LCIDs of other transmission paths of the direct communication interface in the case of overlapping transmission using PDCP according to an association relationship between the first LCID and the LCDIs of different transmission paths, wherein the first LCID is an available LCID, and the first LCID set includes available LCIDs of the direct communication interfaces of the first terminal device and the second terminal device.

[0013] Optionally, transmitting the second information to a network device providing a service to the first terminal device includes: and transmitting the second information to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0014] Optionally, the method further comprises: The method further includes transmitting to the second terminal device, via PDCP-based duplicate transmission on the direct communication interface configuration signaling or PDCP-based duplicate transmission on the direct communication interface activation signaling, the available direct communication interface frequency resource sets of each transmission path in the case of PDCP-based duplicate transmission.

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

[0016] Optionally, after determining an available direct communication interface frequency resource set of each transmission path in the case of overlapping transmission according to PDCP based on the first information, the method further comprises: When the first terminal device uses the network-configured resource allocation mode, the method further includes transmitting to a network device an available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission according to the PDCP.

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

[0018] Optionally, when the direct communication interface frequency resource set includes at least two frequency resources, the method further comprises: The method further includes selecting, for a logic channel corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission using PDCP, one target direct communication interface frequency resource from a direct communication interface frequency resource set corresponding to the transmission path to transmit data.

[0019] Optionally, the first instruction information is: A channel occupancy rate (CBR) or a channel occupancy (CO) in each direct communication interface frequency resource of the first terminal device; direct communication interface parameters in each direct communication interface frequency resource of the first terminal device, 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); a direct communication interface frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, which is desired for the first terminal device; and and an available direct communication interface frequency resource set of the direct communication interface in case of overlapping transmission according to PDCP, which is desired for the first terminal device.

[0020] Optionally, the second instruction information is: CBR or CO in each direct communication interface frequency resource of the second terminal device; sidelink parameters in each direct communication interface frequency resource of the second terminal device; a sidelink parameter frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, desired for the second terminal device; and the available sidelink parameter frequency resource set of the direct communication interface in case of PDCP overlap desired for the second terminal device.

[0021] An embodiment of the present disclosure is a method for determining frequency resources performed by a network device, the method comprising: determining, for a first terminal device, an available direct communication interface frequency resource set of each transmission path in case of overlapping transmission according to a Packet Data Convergence Protocol (PDCP) based on the first information; The first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is indication information of a direct communication interface frequency resource determined by a first terminal device; and and second indication information, which is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0022] Optionally, the method further comprises: The method further includes receiving the first information transmitted from the first terminal device.

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

[0024] Optionally, the method further comprises: determining, based on the second information, a logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP; The second information is an available LCID of a first terminal device in a unicast connection between the first terminal device and a second terminal device; an LCID for PDCP duplicate transmission on a direct communication interface recommended for a first terminal device in a unicast connection between the first terminal device and a second terminal device; and and an LCID reserved for PDCP-based duplicate transmission from the first terminal device on the direct communication interface in a unicast connection between the first terminal device and the second terminal device.

[0025] Optionally, determining, based on the second information, a logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP, Randomly selecting N LCIDs from available LCIDs, each of the N LCIDs corresponding to a transmission path, where the LCIDs correspond one-to-one with the transmission paths, and N is equal to the number of transmission paths of the direct communication interface in the case of PDCP overlap transmission; or The method includes randomly selecting a first LCID from a first LCID set as an LCID of one transmission path of the direct communication interface in the case of overlapping transmission using PDCP, and determining LCIDs of other transmission paths of the direct communication interface in the case of overlapping transmission using PDCP according to an association relationship between the first LCID and the LCDIs of different transmission paths, wherein the first LCID is an available LCID, and the first LCID set includes available LCIDs of the direct communication interfaces of the first terminal device and the second terminal device.

[0026] Optionally, the method further comprises: The method further includes receiving the second information transmitted from the first terminal device.

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

[0028] Optionally, the method further comprises: The method further includes transmitting, to a first terminal device, logic channel identifiers (LCIDs) corresponding to each transmission path of the SLRB in the case of overlapping transmission according to PDCP.

[0029] Optionally, the method further comprises: The method further includes transmitting to the first terminal device, by means of PDCP-based duplicate transmission on the direct communication interface configuration signaling or PDCP-based duplicate transmission on the direct communication interface activation signaling, an available direct communication interface frequency resource set for each transmission path in the case of PDCP-based duplicate transmission.

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

[0031] An embodiment of the present disclosure further provides a terminal device, which is a first terminal device, the terminal device including: a memory, a transceiver, and a processor; The memory is for storing computer programs. the transceiver is for transmitting and receiving data under the control of the processor; The processor is configured to read a computer program in the memory and perform an operation of obtaining, based on the first information, an available direct communication interface frequency resource set for each transmission path in case of overlapping transmission according to a Packet Data Convergence Protocol (PDCP); The first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is indication information of a direct communication interface frequency resource determined by a first terminal device; and and second indication information which is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0032] Optionally, the processor reads the computer program in the memory and executes: an operation of transmitting the first information to a network device serving a first terminal device, and receiving available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission according to PDCP transmitted from the network device, wherein the direct communication interface frequency resource sets are determined by the network device based on the first information; or and for performing an operation of determining, based on the first information, an available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission according to PDCP. Optionally, the processor reads the computer program in the memory and executes: and for performing an operation of transmitting the first information to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface Radio Resource Control (RRC) signaling. Optionally, the processor reads the computer program in the memory and executes: and further performing an operation of acquiring, based on the second information, a logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP; The second information is an available LCID of a first terminal device in a unicast connection between the first terminal device and a second terminal device; an LCID for PDCP duplicate transmission on a direct communication interface recommended for a first terminal device in a unicast connection between the first terminal device and a second terminal device; and an LCID reserved for PDCP-based duplicate transmission from the first terminal device on the direct communication interface in a unicast connection between the first terminal device and the second terminal device.

[0033] Optionally, the processor reads the computer program in the memory and executes: An operation of transmitting the second information to a network device providing a service to a first terminal device, and receiving LCIDs corresponding to each transmission path of the SLRB transmitted from the network device in the case of duplicate transmission using PDCP, wherein the LCIDs are determined by the network device providing a service to the first terminal device based on the second information; or The second information is used to perform an operation of determining the LCID corresponding to each transmission path of the SLRB in the case of overlapping transmission by PDCP, based on the second information.

[0034] Optionally, the processor reads the computer program in the memory and executes: Randomly selecting N LCIDs from the available LCIDs, each of the N LCIDs corresponding to a transmission path, where the LCIDs correspond one-to-one with the transmission paths, and N is equal to the number of transmission paths of the direct communication interface in the case of PDCP overlap transmission; or and for performing an operation of randomly selecting a first LCID from a first LCID set as an LCID of one transmission path of a direct communication interface in case of overlapping transmission using PDCP, and determining an LCID of another transmission path of the direct communication interface in case of overlapping transmission using PDCP according to an association relationship between the first LCID and the LCDI of a different transmission path, wherein the first LCID is an available LCID, and the first LCID set includes available LCIDs of the direct communication interfaces of the first terminal device and the second terminal device.

[0035] Optionally, the processor reads the computer program in the memory and executes: and for further performing an operation of transmitting the second information to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface Radio Resource Control (RRC) signaling.

[0036] Optionally, the processor reads the computer program in the memory and executes: The method further performs an operation of transmitting, to a second terminal device, an available direct communication interface frequency resource set for each transmission path in the case of PDCP duplicate transmission, through the setting signaling for PDCP duplicate transmission on the direct communication interface or the activation signaling for PDCP duplicate transmission on the direct communication interface.

[0037] Optionally, the processor reads the computer program in the memory and executes: When the first terminal device uses the network-configured resource allocation mode, the first terminal device further performs an operation of transmitting to the network device an available direct communication interface frequency resource set of each transmission path in the case of overlapping transmission according to the PDCP.

[0038] Optionally, the processor reads the computer program in the memory and executes: and further performing an operation of selecting, for a logic channel corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP, one target direct communication interface frequency resource from a direct communication interface frequency resource set corresponding to the transmission path to transmit data.

[0039] An embodiment of the present disclosure further provides a network device, the network device including: a memory; a transceiver; and a processor; The memory is for storing a computer program, and the transceiver is for transmitting and receiving data under the control of the processor, and the processor reads the computer program in the memory and and performing an operation of determining, for a first terminal device, an available direct communication interface frequency resource set of each transmission path in case of overlapping transmission according to a Packet Data Convergence Protocol (PDCP) based on the first information; The first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is indication information of a direct communication interface frequency resource determined by a first terminal device; and and second indication information that is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0040] An embodiment of the present disclosure is a frequency resource acquisition device applied to a first terminal device, comprising: A first obtaining unit is provided for obtaining an available direct communication interface frequency resource set of each transmission path in the case of overlapping transmission according to a Packet Data Convergence Protocol (PDCP) according to the first information; The first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is indication information of a direct communication interface frequency resource determined by a first terminal device; and and second indication information, which is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0041] An embodiment of the present disclosure is a frequency resource determination device applied to a network device, comprising: a first determining unit for determining, for a first terminal device, an available direct communication interface frequency resource set of each transmission path in case of overlapping transmission according to a Packet Data Convergence Protocol (PDCP) based on the first information; The first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is indication information of a direct communication interface frequency resource determined by a first terminal device; and and second indication information, which is indication information of a direct communication interface frequency resource received by the first terminal equipment from a second terminal equipment.

[0042] An embodiment of the present disclosure provides a processor-readable storage medium having a computer program stored therein, the computer program causing the processor to execute the above method. [Effects of the Invention]

[0043] The beneficial effects of the present disclosure are as follows: In the above solution, the available direct communication interface frequency resource sets of each transmission path in the case of PDCP overlap transmission are obtained based on the first information, so that the direct communication interface frequency resource sets can be dynamically determined, and the gain of PDCP overlap transmission in the direct communication interface can be improved. [Brief explanation of the drawings]

[0044] In order to more clearly describe the technical solutions of the embodiments of the present disclosure or related technologies, the following briefly introduces the accompanying drawings necessary for describing the embodiments or related technologies. Obviously, the accompanying drawings described below are only some embodiments described in the present disclosure, and those skilled in the art can obtain other accompanying drawings based on these accompanying drawings without any creative efforts. [Figure 1] FIG. 1 is a schematic diagram showing PDCP duplication. [Figure 2] 1 is a flowchart illustrating a method for acquiring frequency resources in an embodiment of the present disclosure. [Figure 3]1 is a flowchart of a method for determining frequency resources in an embodiment of the present disclosure. [Figure 4] 1 is a detailed flowchart illustrating a specific application scenario of an embodiment of the present disclosure. [Figure 5] 2 is a detailed flowchart illustrating a specific application scenario of an embodiment of the present disclosure. [Figure 6] 3 is a detailed flowchart illustrating a specific application scenario of an embodiment of the present disclosure. [Figure 7] FIG. 2 is a schematic diagram illustrating units of a frequency resource acquisition device according to an embodiment of the present disclosure. [Figure 8] FIG. 1 is a structural diagram illustrating a terminal device according to an embodiment of the present disclosure. [Figure 9] FIG. 2 is a schematic diagram illustrating units of a frequency resource determination device according to an embodiment of the present disclosure. [Figure 10] FIG. 1 is a structural diagram illustrating a network device according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0045] The following clearly and completely describes the technical solutions of the embodiments of the present disclosure in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments of the present disclosure, those skilled in the art can derive all other embodiments without any creative effort, and all other embodiments fall within the scope of protection of the present disclosure.

[0046] The terms "first," "second," and the like in the present specification and claims are intended to distinguish between similar objects and are not necessarily intended to describe a particular order or sequence. It should be understood that such terms may be interchanged where appropriate, so that the embodiments of the present disclosure described herein may be performed, for example, according to an order other than that illustrated or described herein. Furthermore, the terms "comprises," "having," and any variations thereof are intended to cover non-exclusive "comprises," such as including a process, method, system, product, or apparatus of a series of steps or units, and are not limited to the explicit listing of those steps or units, but may also include other steps or units not explicitly listed or inherent in those processes, methods, products, or apparatus.

[0047] The term "and / or" in the embodiments of the present disclosure represents a relational relationship between associated objects, and represents three possible relationships. For example, for A and / or B, three relationships can be represented: the mere presence of A, the simultaneous presence of A and B, and the mere presence of B. The symbol " / " generally represents that the associated objects before and after it have an "or" relationship. The term "plurality" in the embodiments of the present disclosure refers to two or more than two, and similarly applies to other counters.

[0048] In the embodiments of the present disclosure, words such as "exemplary" or "for example" are intended to represent an example, illustration, or explanation. In the embodiments of the present disclosure, any embodiment or design solution described as "exemplary" or "for example" should not be construed as more preferred or advantageous over other embodiments or design solutions. Where appropriate, the use of words such as "exemplary" or "for example" is intended to represent the relevant concept in a concrete manner.

[0049] The following first provides a brief description of relevant concepts mentioned in this disclosure.

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

[0051] To improve the reliability of data transmission over the direct communication interface, the PDCP duplication mechanism is introduced. PDCP duplication means that one radio bearer (corresponding to one PDCP entity) in the PDCP layer transmits data over multiple logical channels (one RLC entity per logical channel) in the Radio Link Control (RLC) layer, and the RLC entities then transmit the data to the Media Access Control (MAC) layer. This mechanism is illustrated in Figure 1.

[0052] The establishment of radio bearers in the LTE direct communication interface is entirely determined by the implementation of the UE, without the involvement of the base station. The base station only sets a Per ProSe Packet Reliability (PPPR) threshold for proximity service, and the UE directly determines whether to activate PDCP duplication based on whether the PPPR corresponding to the radio bearer in the direct communication interface is lower than the threshold.

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

[0054] The following describes embodiments of the present disclosure with reference to the accompanying drawings. The frequency resource acquisition method, determination method, device, terminal device, and network device provided by the embodiments of the present disclosure may be applied to a wireless communication system. The wireless communication system may be a system using fifth generation (5G) mobile communication technology (hereinafter referred to as a 5G system). As can be appreciated by those skilled in the art, the 5GNR system is merely an example and is not limiting.

[0055] The embodiments of the present disclosure provide a frequency resource acquisition method, a frequency resource determination method, an apparatus, a terminal device, and a network device, thereby solving the problem of how to configure an SL frequency resource set corresponding to each transmission path of SL PDCP duplication and how to improve the gain of SL PDCP duplication.

[0056] Here, the method and the apparatus are based on the technical concept of the same application, and since the method and the apparatus have similar principles for solving problems, the implementation of the apparatus and the method may be cross-referenced, and the overlapping parts will be omitted.

[0057] As shown in FIG. 2, an embodiment of the present disclosure provides a frequency resource acquisition method performed by a first terminal device, and the method includes the following steps: Step S201: According to first information, obtain an available direct communication interface frequency resource set of each transmission path in the case of overlapping transmission according to Packet Data Convergence Protocol (PDCP).

[0058] Here, the first information is A combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device (A11); First indication information (A12) is indication information of a direct communication interface frequency resource determined by the first terminal device; and and second indication information (A13) that is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0059] In the embodiments of the present disclosure, the available direct communication interface frequency resource sets of each transmission path in the case of PDCP duplication transmission are dynamically obtained based on the first information, thereby avoiding the problem that the frequency resource sets in the direct communication interface can only be statically configured, which affects the performance of SL PDCP duplication.

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

[0061] Optionally, in another embodiment of the present disclosure, the available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission using PDCP include direct communication interface frequency resource sets corresponding to each transmission path of a direct communication interface radio bearer (Sidelink Radio Bearer: SLRB) in the case of overlapping transmission using PDCP.

[0062] Optionally, in another embodiment of the present disclosure, the number of the direct communication interface frequency resource sets is the same as the number of transmission paths in the case of overlapping transmission according to PDCP. That is, the total number of transmission paths of the SLRB in the case of overlapping transmission by PDCP is the same as the total number of direct communication interface frequency resource sets.

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

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

[0065] Optionally, when the direct communication interface frequency resource set includes at least two frequency resources, the method further comprises: The method further includes selecting, for a logic channel corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission using PDCP, one target direct communication interface frequency resource from a direct communication interface frequency resource set corresponding to the transmission path to transmit data.

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

[0067] Optionally, in one embodiment of the present disclosure, the first instruction information is: A channel busy ratio (CBR) or channel occupancy (CO) (A121) of each direct communication interface frequency resource of the first terminal device; direct communication interface parameters (A122) in each direct communication interface frequency resource of the first terminal device, the direct communication interface parameters including direct communication interface channel state information (Sidelink-Channel State Information: SL-CSI), direct communication interface reference signal receiving power (Sidelink-Reference Signal Receiving Power: SL-RSRP), or direct communication interface discovery reference signal receiving power (Sidelink Discover-Reference Signal Receiving Power: SD-RSRP); a direct communication interface frequency resource set (A123) corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, desired for the first terminal device; and and an available direct communication interface frequency resource set (A124) of the direct communication interface in the case of overlapping transmission according to PDCP, which is desired for the first terminal device.

[0068] Optionally, in one embodiment of the present disclosure, the second instruction information is: CBR or CO(A131) in each direct communication interface frequency resource of the second terminal device; Sidelink parameters (A132) for each direct communication interface frequency resource of the second terminal device; a sidelink parameter frequency resource set (A133) corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, desired for the second terminal device; and the available sidelink parameter frequency resource set (A134) of the direct communication interface in case of overlap by PDCP, which is desired for the second terminal device.

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

[0070] In addition, in the embodiment of the present disclosure, two methods are provided for the first terminal device to obtain the available direct communication interface frequency resource sets of each transmission path in the case of PDCP-based overlap transmission. One method is for the first terminal device to directly determine it based on the first information, i.e., the first terminal device determines the available direct communication interface frequency resource sets of each transmission path in the case of PDCP-based overlap transmission based on the first information. The other method is for the first terminal device to directly receive the available direct communication interface frequency resource sets of each transmission path in the case of PDCP-based overlap transmission sent from a network device, i.e., the first terminal device sends the first information to a network device providing a service to the first terminal device, receives the available direct communication interface frequency resource sets of each transmission path in the case of PDCP-based overlap transmission sent from the network device, and the direct communication interface frequency resource sets are determined by the network device based on the first information. The following describes the above two implementation methods.

[0071] Method 1: The first terminal device makes a decision directly and independently based on the first information. In such an implementation manner, the manner in which the first terminal device determines the direct communication interface frequency resource set includes any of the following manners:

[0072] In method B11, after determining the currently available SL frequency resource set based on the first information, the SL frequency resources in the SL frequency resource set are sorted in ascending order of CBR or CO, and then the SL frequency resources are sequentially allocated to each transmission path of the direct communication interface in the case of overlapping transmission using PDCP. It should be noted that in such a manner of determining the direct communication interface frequency resource set, each direct communication interface frequency resource set includes only one direct communication interface frequency resource.

[0073] In method B12, after determining the currently available SL frequency resource set based on the first information, the SL frequency resources in the SL frequency resource set are randomly allocated to groups in the same number as the number of transmission paths of the direct communication interface in the case of overlapping transmission using PDCP, and the SL frequency resources of each group are set as the SL frequency resource set corresponding to the next transmission on the direct communication interface in the case of overlapping transmission using PDCP. It should be noted that in such a manner of determining a direct communication interface frequency resource set, each direct communication interface frequency resource set generally includes one or more (ie, at least two) direct communication interface frequency resources.

[0074] Optionally, in this case, after the first terminal device determines and obtains the direct communication interface frequency resource set, it should further transmit the available direct communication interface frequency resource sets of each transmission path in the case of PDCP duplicate transmission to the second terminal device by setting signaling for PDCP duplicate transmission on the direct communication interface or activating signaling for PDCP duplicate transmission on the direct communication interface.

[0075] Optionally, the activation signaling of PDCP duplicate transmission in the direct communication interface includes at least one of RRC signaling, a media access control element (MACCE), or physical layer signaling.

[0076] Optionally, in this case, if the first terminal device uses a network-configured resource allocation mode, the first terminal device should further send to the network device the available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission according to the PDCP, so as to facilitate the use of the direct communication interface frequency resource sets by the network device.

[0077] Method 2: The first terminal device directly receives the available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission according to PDCP sent from the network device.

[0078] Optionally, in such an implementation, transmitting the first information to a network device providing a service to the first terminal device includes: The method includes transmitting the first information to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface RRC signaling.

[0079] Optionally, in this case, after obtaining the direct communication interface frequency resource set sent from the network equipment, the first terminal device should further send the available direct communication interface frequency resource set of each transmission path in the case of PDCP duplicate transmission to the second terminal device by setting signaling for PDCP duplicate transmission on the direct communication interface or activating signaling for PDCP duplicate transmission on the direct communication interface.

[0080] Optionally, the configuration signaling for PDCP-based duplicate transmission on the direct communication interface includes at least one of RRC signaling, MACCE, or physical layer signaling.

[0081] The network device may use the above method B11 or B12 for determining the available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission using PDCP.

[0082] Optionally, in another embodiment of the present disclosure, the method further comprises: The method further includes obtaining, based on the second information, a logical channel identity (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP.

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

[0084] In scheme C11, the LCID corresponding to each transmission path of the SLRB in the case of overlapping transmission using PDCP is determined based on the second information. In this case, the first terminal device determines, by itself, based on the second information, the LCID corresponding to each transmission path of the SLRB in the case of overlapping transmission according to PDCP.

[0085] Optionally, a specific implementation manner for the first terminal device to determine the LCID corresponding to each transmission path may include any one of the following manners:

[0086] In scheme C111, N LCIDs are randomly selected from available LCIDs, and each of the N LCIDs corresponds to a transmission path, where the LCIDs correspond one-to-one with the transmission paths, and N is equal to the number of transmission paths of the direct communication interface in the case of overlapping transmission using PDCP.

[0087] In this implementation, N LCIDs are randomly determined and obtained, and then the N LCIDs are transmitted to N transmission paths, respectively. The available LCIDs may be understood as LCIDs corresponding to unused logic channels, and may be abbreviated as unoccupied LCIDs. That is, the transmitting terminal in the direct communication interface may randomly select, from the currently available unoccupied LCIDs, LCIDs equal in number to the number of transmission paths of the direct communication interface in the case of PDCP-based overlap transmission, and the selected LCIDs may correspond to the respective transmission paths.

[0088] In the method C112, a first LCID is randomly selected from a first LCID set as an LCID of one transmission path of a direct communication interface in the case of overlapping transmission according to PDCP, and according to the association relationship between the first LCID and the LCDI of a different transmission path, an LCID of another transmission path of the direct communication interface in the case of overlapping transmission according to PDCP is determined, where the first LCID is an available LCID, and the first LCID set includes the available LCIDs of the direct communication interfaces of the first terminal device and the second terminal device.

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

[0090] That is, the transmitting terminal in the direct communication interface may randomly select one unused LCID from the first LCID set as the LCID of one transmission path of the direct communication interface in the case of overlapping transmission using PDCP, and then determine the LCID corresponding to another transmission path according to the association relationship between the LCID and the LCID of a different transmission path of the direct communication interface in the case of overlapping transmission using PDCP that has been agreed upon in advance.

[0091] Method C12 involves transmitting the second information to a network device providing services to a first terminal device, and receiving an LCID corresponding to each transmission path of the SLRB transmitted from the network device in the case of duplicate transmission using PDCP, wherein the LCID is determined by the network device providing services to the first terminal device based on the second information.

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

[0093] Optionally, in this case, the first terminal device transmits the second information to the network device by at least one of direct communication interface terminal information (Side link UE Information), terminal assistance information (UE Assistance Information), and Uu interface RRC signaling.

[0094] The second information is an available LCID (C21) of a first terminal device in a unicast connection between the first terminal device and a second terminal device; an LCID (C22) for PDCP duplicate transmission on a direct communication interface recommended for a first terminal device in a unicast connection between the first terminal device and a second terminal device; and an LCID (C23) reserved for duplicate transmission by PDCP from the first terminal device on the direct communication interface in a unicast connection between the first terminal device and the second terminal device.

[0095] At least one embodiment of the present disclosure provides a method for configuring resource overlap transmission on a direct communication interface, which allows a transmitting terminal on the direct communication interface or a network device to which the transmitting terminal on the direct communication interface belongs to solve the problem of how to configure a direct communication interface frequency resource set corresponding to each transmission path of the direct communication interface in the case of overlap transmission using PDCP, and further improves the gain of overlap transmission using PDCP on the direct communication interface.

[0096] The technical solutions provided by the embodiments of the present disclosure can be applied to multiple systems, particularly 5G systems. For example, applicable systems may include Global System of Mobile communications (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 Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), and 5G New Radio (NR). Each of these systems includes a terminal device and a network device. The system may include a core network portion such as an Evolved Packet System (EPS), a 5G System (5GS), etc.

[0097] A terminal device according to an embodiment of the present disclosure is a device that provides voice and / or data communication to a user, and may be a handheld device with wireless connectivity or other processing device connected to a wireless modem. The term terminal device may be called differently in different systems. For example, in a 5G system, the terminal device may be called User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CN) via a Radio Access Network (RAN). The wireless terminal device may be a mobile terminal device such as a mobile phone (also called a "cellular" phone) or a computer with a mobile terminal device. For example, the wireless terminal device may be a portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile device that exchanges voice and / or data with the radio access network. Examples of such devices include a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), etc. The wireless terminal device may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile stage, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, or a user device, and the embodiments of the present disclosure are not limited to these.

[0098] The network device according to an embodiment of the present disclosure may be a base station. The base station may include multiple cells serving terminals. Depending on a specific application scenario, the base station may be called an access point, or may be a device communicating with wireless terminal devices via one or more sectors over an air interface in an access network, or may have other names. The network device may be used to exchange received air frames with Internet Protocol (IP) packets and act as a router between the wireless terminal devices and the rest of the access network. Here, the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present disclosure may be a network device (Base Transceiver Station: BTS) in a Global System of Mobile communication (GSM) or a Code Division Multiple Access (CDMA), a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), an evolutionary network device (Evolutional NodeB: eNB or e-NodeB) in a Long Term Evolution (LTE) system, a 5G base station (gNB) in a 5G network system (next generation system), a Home evolved NodeB (HeNB), a relay terminal node, a femto base station (femto), a pico base station (pico), or the like, and is not limited to these in the embodiment of the present disclosure.In some network configurations, the network equipment may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized units and distributed units may be geographically separated.

[0099] One or more antennas may be used between the network device and the terminal device, respectively, to perform multi-input multi-output (MIMO) transmission. The MIMO transmission may be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the type and number of antenna combinations, the MIMO transmission may be a two-dimensional MIMO antenna (2D-MIMO), a three-dimensional MIMO antenna (3D-MIMO), a full-dimensional MIMO antenna (FD-MIMO), or a very large-scale MIMO antenna (massive-MIMO), and may also be diversity transmission, precoding transmission, beamforming transmission, or the like.

[0100] As shown in FIG. 3 , an embodiment of the present disclosure provides a frequency resource determination method performed by a network device, the method including: The method includes a step S301 of determining, for a first terminal device, an available direct communication interface frequency resource set of each transmission path in case of overlapping transmission according to Packet Data Convergence Protocol (PDCP) based on first information.

[0101] Here, the first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is indication information of a direct communication interface frequency resource determined by a first terminal device; and and second indication information that is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0102] Optionally, the method further comprises: The method further includes receiving the first information transmitted from the first terminal device.

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

[0104] Optionally, the method further comprises: The method further includes determining, based on the second information, a logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP.

[0105] Here, the second information is an available LCID of a first terminal device in a unicast connection between the first terminal device and a second terminal device; an LCID for PDCP duplicate transmission on a direct communication interface recommended for a first terminal device in a unicast connection between the first terminal device and a second terminal device; and an LCID reserved for PDCP-based duplicate transmission from the first terminal device on the direct communication interface in a unicast connection between the first terminal device and the second terminal device.

[0106] Optionally, determining, based on the second information, a logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP, Randomly selecting N LCIDs from available LCIDs, each of the N LCIDs corresponding to a transmission path, where the LCIDs correspond one-to-one with the transmission paths, and N is equal to the number of transmission paths of the direct communication interface in the case of PDCP overlap transmission; or The method includes randomly selecting a first LCID from a first LCID set as an LCID of one transmission path of the direct communication interface in the case of overlapping transmission using PDCP, and determining LCIDs of other transmission paths of the direct communication interface in the case of overlapping transmission using PDCP according to an association relationship between the first LCID and the LCDIs of different transmission paths, wherein the first LCID is an available LCID, and the first LCID set includes available LCIDs of the direct communication interfaces of the first terminal device and the second terminal device.

[0107] Optionally, the method further comprises: The method further includes receiving the second information transmitted from the first terminal device.

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

[0109] Optionally, the method further comprises: The method further includes transmitting, to a first terminal device, logic channel identifiers (LCIDs) corresponding to each transmission path of the SLRB in the case of overlapping transmission according to PDCP.

[0110] Optionally, the method further comprises: The method further includes transmitting to the first terminal device, by means of PDCP-based duplicate transmission on the direct communication interface configuration signaling or PDCP-based duplicate transmission on the direct communication interface activation signaling, an available direct communication interface frequency resource set for each transmission path in the case of PDCP-based duplicate transmission.

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

[0112] Optionally, the first instruction information is: A channel occupancy rate (CBR) or a channel occupancy (CO) in each direct communication interface frequency resource of the first terminal device; direct communication interface parameters in each direct communication interface frequency resource of the first terminal device, 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); a direct communication interface frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, which is desired for the first terminal device; and and an available direct communication interface frequency resource set of the direct communication interface in case of overlapping transmission according to PDCP, which is desired for the first terminal device.

[0113] Optionally, the second instruction information is: CBR or CO in each direct communication interface frequency resource of the second terminal device; sidelink parameters in each direct communication interface frequency resource of the second terminal device; a sidelink parameter frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, desired for the second terminal device; and the available sidelink parameter frequency resource set of the direct communication interface in case of PDCP overlap desired for the second terminal device.

[0114] Optionally, the available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission using PDCP include direct communication interface frequency resource sets corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission using PDCP.

[0115] Optionally, the number of the direct communication interface frequency resource sets is the same as the number of transmission paths in the case of overlapping transmission according to PDCP.

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

[0117] It should be noted that all of the implementation methods in the above embodiments are also applicable to the embodiments of the frequency resource determination method applied to the network side, and similar technical effects can be obtained, so the description thereof will be omitted here.

[0118] The following will explain in detail the specific application method of the present disclosure from the perspective of the transmitting terminal and the receiving terminal.

[0119] Application scenario 1: When a transmitting terminal determines the available direct communication interface frequency resource sets of each transmission path and the corresponding LCIDs of each transmission path in the case of overlapping transmission using PDCP, the transmitting terminal: The process mainly includes the following:

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

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

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

[0123] The method for determining the LCID may be, but is not limited to, any of the following methods. A method in which a transmitting terminal in a direct communication interface randomly selects LCIDs from currently unused LCIDs, the number of which is equal to the number of transmission paths of the direct communication interface in the case of overlapping transmission by PDCP, and the selected LCIDs may be set as LCIDs corresponding to each transmission path; and The transmitting terminal in the direct communication interface may randomly select one unused LCID from the first LCID set as the LCID of one transmission path of the direct communication interface in the case of overlapping transmission using PDCP, and then determine an LCID corresponding to another transmission path according to a pre-arranged association relationship between the LCID and the LCID of a different transmission path of the direct communication interface in the case of overlapping transmission using PDCP.

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

[0125] The manner of determining the direct communication interface frequency resource set corresponding to each transmission path may be, but is not limited to, any of the following manners: A method of determining a currently available SL frequency resource set based on the first information, sorting the SL frequency resources in the SL frequency resource set in ascending order of CBR or CO, and sequentially allocating the SL frequency resources to each transmission path of a direct communication interface in the case of overlapping transmission using PDCP; and The method may include determining a currently available SL frequency resource set based on the first information, and then randomly allocating the SL frequency resources in the SL frequency resource set to groups in the same number as the number of transmission paths of the direct communication interface in the case of overlapping transmission using PDCP, and using the SL frequency resources of each group as the SL frequency resource set corresponding to the next transmission on the direct communication interface in the case of overlapping transmission using PDCP.

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

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

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

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

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

[0131] A transmitting terminal in the direct communication interface receives, via the direct communication interface, second indication information transmitted from a receiving terminal in the direct communication interface, wherein the second indication information is for assisting the transmitting terminal in the direct communication interface in determining an available direct communication interface frequency resource set of the direct communication interface in the case of overlapping transmission according to PDCP.

[0132] The content of the second instruction information may be, but is not limited to, one or more of the following: CBR or CO on each direct communication interface frequency resource of the receiving terminal equipment; Sidelink parameters for each direct communication interface frequency resource of the receiving terminal device; a sidelink parameter frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, desired for the receiving terminal device; and It may also be the available sidelink parameter frequency resource set of the direct communication interface in case of overlapping due to PDCP, desired for the receiving terminal device.

[0133] In step S22, the transmitting terminal on the direct communication interface determines a direct communication interface frequency resource set and an LCID of the direct communication interface in the case of overlap transmission according to PDCP.

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

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

[0136] The method for determining the LCID may be, but is not limited to, any of the following methods. A method in which a transmitting terminal in a direct communication interface randomly selects LCIDs from currently unused LCIDs, the number of which is equal to the number of transmission paths of the direct communication interface in the case of overlapping transmission by PDCP, and the selected LCIDs may be set as LCIDs corresponding to each transmission path; and The transmitting terminal in the direct communication interface may randomly select one unused LCID from the first LCID set as the LCID of one transmission path of the direct communication interface in the case of overlapping transmission using PDCP, and then determine an LCID corresponding to another transmission path according to a pre-arranged association relationship between the LCID and the LCID of a different transmission path of the direct communication interface in the case of overlapping transmission using PDCP.

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

[0138] The manner of determining the direct communication interface frequency resource set corresponding to each transmission path may be, but is not limited to, any of the following manners: A method of determining a currently available SL frequency resource set based on the first information, sorting the SL frequency resources in the SL frequency resource set in ascending order of CBR or CO, and sequentially allocating the SL frequency resources to each transmission path of a direct communication interface in the case of overlapping transmission using PDCP; and The method may include determining a currently available SL frequency resource set based on the first information, and then randomly allocating the SL frequency resources in the SL frequency resource set to groups in the same number as the number of transmission paths of the direct communication interface in the case of overlapping transmission using PDCP, and using the SL frequency resources of each group as the SL frequency resource set corresponding to the next transmission on the direct communication interface in the case of overlapping transmission using PDCP.

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

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

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

[0142] Application scenario 3: When a network device serving a transmitting terminal determines the available direct communication interface frequency resource sets of each transmission path and the corresponding LCIDs of each transmission path in the case of overlapping transmission according to PDCP, As shown in Figure 5, the process mainly includes the following:

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

[0144] The transmitting terminal in the direct communication interface receives, via the direct communication interface, second indication information sent from the receiving terminal in the direct communication interface, where the second indication information is for assisting the network device corresponding to the transmitting terminal in the direct communication interface to determine an available direct communication interface frequency resource set of the direct communication interface in the case of overlapping transmission according to PDCP.

[0145] The content of the second instruction information may be, but is not limited to, one or more of the following: CBR or CO on each direct communication interface frequency resource of the receiving terminal equipment; Sidelink parameters for each direct communication interface frequency resource of the receiving terminal device; a sidelink parameter frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, desired for the receiving terminal device; and It may also be the available sidelink parameter frequency resource set of the direct communication interface in case of overlapping due to PDCP, desired for the receiving terminal device.

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

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

[0148] The first information may be Sidelink UE Information, UE Assistance Information, or new Uu interface RRC signaling in the related art.

[0149] Here, the second information may include one or more of the following contents, but is not limited to them: the available LCID of the sending terminal device in a unicast connection between the sending terminal device and the receiving terminal device; an LCID for PDCP duplicate transmission on the direct communication interface recommended for the sending terminal device in a unicast connection between the sending terminal device and the receiving terminal device; and It may be an LCID reserved for duplicate transmission by PDCP on the direct communication interface from the transmitting terminal in a unicast connection between the transmitting terminal and the receiving terminal.

[0150] In step S33, the network device serving the transmitting terminal in the direct communication interface determines an available direct communication interface frequency resource set of each transmission path of the direct communication interface in the case of overlapping transmission according to PDCP, and an LCID corresponding to each transmission path.

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

[0152] Here, the method for determining the LCID may be any of the following methods, but is not limited to these. A method in which a transmitting terminal in a direct communication interface randomly selects LCIDs from currently unused LCIDs, the number of which is equal to the number of transmission paths of the direct communication interface in the case of overlapping transmission by PDCP, and the selected LCIDs may be set as LCIDs corresponding to each transmission path; and The transmitting terminal in the direct communication interface may randomly select one unused LCID from the first LCID set as the LCID of one transmission path of the direct communication interface in the case of overlapping transmission using PDCP, and then determine an LCID corresponding to another transmission path according to a pre-arranged association relationship between the LCID and the LCID of a different transmission path of the direct communication interface in the case of overlapping transmission using PDCP.

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

[0154] The manner of determining the direct communication interface frequency resource set corresponding to each transmission path may be, but is not limited to, any of the following manners: A method of determining a currently available SL frequency resource set based on the first information, sorting the SL frequency resources in the SL frequency resource set in ascending order of CBR or CO, and sequentially allocating the SL frequency resources to each transmission path of a direct communication interface in the case of overlapping transmission using PDCP; and The method may include determining a currently available SL frequency resource set based on the first information, and then randomly allocating the SL frequency resources in the SL frequency resource set to groups in the same number as the number of transmission paths of the direct communication interface in the case of overlapping transmission using PDCP, and using the SL frequency resources of each group as the SL frequency resource set corresponding to the next transmission on the direct communication interface in the case of overlapping transmission using PDCP.

[0155] Furthermore, when the transmitting terminal uses a network-scheduled resource allocation mode, the network device determines a direct communication interface frequency resource set corresponding to each transmission path, and then selects a unique direct communication interface frequency resource for each transmission path, and allocates resources to the SLRB in the selected unique direct communication interface frequency resource.

[0156] In step S34, the network device transmits to the transmitting terminal the available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission according to PDCP, and the LCIDs corresponding to each transmission path.

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

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

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

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

[0161] The transmitting terminal in the direct communication interface receives, via the direct communication interface, second indication information transmitted from the receiving terminal in the direct communication interface, wherein the second indication information is for assisting the transmitting terminal in the direct communication interface or a network device corresponding to the transmitting terminal in the direct communication interface to determine an available direct communication interface frequency resource set of the direct communication interface in the case of overlapping transmission according to PDCP.

[0162] The content of the second instruction information may be, but is not limited to, one or more of the following: CBR or CO on each direct communication interface frequency resource of the receiving terminal equipment; Sidelink parameters for each direct communication interface frequency resource of the receiving terminal device; a sidelink parameter frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, desired for the receiving terminal device; and It may also be the available sidelink parameter frequency resource set of the direct communication interface in case of overlapping due to PDCP, desired for the receiving terminal device.

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

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

[0165] The first information may be Sidelink UE Information, UE Assistance Information, or new Uu interface RRC signaling in the related art.

[0166] In step S43, the network device serving the transmitting terminal in the direct communication interface determines the transmission resources specifically used for each transmission path of the direct communication interface in the case of overlap transmission according to PDCP.

[0167] The network device determines, based on the first information, a direct communication interface frequency resource set corresponding to each transmission path of the SLRB in the case of overlapping transmission according to PDCP.

[0168] The manner of determining the direct communication interface frequency resource set corresponding to each transmission path may be, but is not limited to, any of the following manners: A method of determining a currently available SL frequency resource set based on the first information, sorting the SL frequency resources in the SL frequency resource set in ascending order of CBR or CO, and sequentially allocating the SL frequency resources to each transmission path of a direct communication interface in the case of overlapping transmission using PDCP; and The method may include determining a currently available SL frequency resource set based on the first information, and then randomly allocating the SL frequency resources in the SL frequency resource set to groups in the same number as the number of transmission paths of the direct communication interface in the case of overlapping transmission using PDCP, and using the SL frequency resources of each group as the SL frequency resource set corresponding to the next transmission on the direct communication interface in the case of overlapping transmission using PDCP.

[0169] Furthermore, when the transmitting terminal uses a network-scheduled resource allocation mode, the network device determines a direct communication interface frequency resource set corresponding to each transmission path, and then selects a unique direct communication interface frequency resource for each transmission path, and allocates resources to the SLRB in the selected unique direct communication interface frequency resource.

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

[0171] Here, the method for determining the LCID may be any of the following methods, but is not limited to these. A method in which a transmitting terminal in a direct communication interface randomly selects LCIDs from currently unused LCIDs, the number of which is equal to the number of transmission paths of the direct communication interface in the case of overlapping transmission by PDCP, and the selected LCIDs may be set as LCIDs corresponding to each transmission path; and The transmitting terminal in the direct communication interface may randomly select one unused LCID from the first LCID set as the LCID of one transmission path of the direct communication interface in the case of overlapping transmission using PDCP, and then determine an LCID corresponding to another transmission path according to a pre-arranged association relationship between the LCID and the LCID of a different transmission path of the direct communication interface in the case of overlapping transmission using PDCP.

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

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

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

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

[0176] The number of direct communication interface frequency resources in the direct communication interface frequency resource set determined in step S43 may be plural, and when a terminal self-selection resource allocation mode is used, the transmitting terminal of the direct communication interface needs to uniquely select one direct communication interface frequency resource from each of the direct communication interface frequency resource sets, and a specific selection manner may be as follows: for a logic channel corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission based on PDCP, select one target direct communication interface frequency resource from the direct communication interface frequency resource set corresponding to the transmission path, and transmit data on the transmission path using the selected unique direct communication interface frequency resource.

[0177] As shown in FIG. 7 , an embodiment of the present disclosure provides a frequency resource acquisition apparatus 700 applied to a first terminal device, the apparatus 700 comprising: The first obtaining unit 701 is provided for obtaining an available direct communication interface frequency resource set of each transmission path in case of overlapping transmission according to Packet Data Convergence Protocol (PDCP) according to the first information.

[0178] Here, the first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is indication information of a direct communication interface frequency resource determined by a first terminal device; and and second indication information that is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0179] Optionally, the first acquiring unit 701: Sending the first information to a network device serving a first terminal device, and receiving available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission according to PDCP sent from the network device, wherein the direct communication interface frequency resource sets are determined by the network device based on the first information; or Based on the first information, a set of available direct communication interface frequency resources for each transmission path in the case of overlapping transmission using PDCP is determined.

[0180] Optionally, the available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission using PDCP include direct communication interface frequency resource sets corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission using PDCP.

[0181] Optionally, the number of the direct communication interface frequency resource sets is the same as the number of transmission paths in the case of overlapping transmission according to PDCP.

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

[0183] Optionally, the first acquiring unit 701: The first information is transmitted to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface Radio Resource Control (RRC) signaling.

[0184] Optionally, the device comprises: The device further includes a second obtaining unit for obtaining, based on the second information, a logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP.

[0185] The second information is an available LCID of a first terminal device in a unicast connection between the first terminal device and a second terminal device; an LCID for PDCP duplicate transmission on a direct communication interface recommended for a first terminal device in a unicast connection between the first terminal device and a second terminal device; and an LCID reserved for PDCP-based duplicate transmission from the first terminal device on the direct communication interface in a unicast connection between the first terminal device and the second terminal device.

[0186] Optionally, the second acquisition unit: Sending the second information to a network device providing a service to a first terminal device, and receiving LCIDs corresponding to each transmission path of the SLRB sent from the network device in the case of duplicate transmission by PDCP, wherein the LCIDs are determined by the network device providing a service to the first terminal device based on the second information; or Based on the second information, the LCID corresponding to each transmission path of the SLRB in the case of overlapping transmission by PDCP is determined.

[0187] Optionally, the second acquisition unit: Randomly selecting N LCIDs from the available LCIDs, each of the N LCIDs corresponding to a transmission path, where the LCIDs correspond one-to-one with the transmission paths, and N is equal to the number of transmission paths of the direct communication interface in the case of PDCP overlap transmission; or Randomly select a first LCID from a first LCID set as an LCID of one transmission path of the direct communication interface in the case of overlapping transmission using PDCP, and determine LCIDs of other transmission paths of the direct communication interface in the case of overlapping transmission using PDCP according to an association relationship between the first LCID and the LCDIs of different transmission paths, where the first LCID is an available LCID, and the first LCID set includes available LCIDs of the direct communication interfaces of the first terminal device and the second terminal device.

[0188] Optionally, the second acquisition unit: The second information is transmitted to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface Radio Resource Control (RRC) signaling.

[0189] Optionally, the device comprises: The communication device further includes a first transmitting unit for transmitting, to a second terminal device, an available direct communication interface frequency resource set of each transmission path in the case of PDCP duplicate transmission, by setting signaling for PDCP duplicate transmission on the direct communication interface or by activating signaling for PDCP duplicate transmission on the direct communication interface.

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

[0191] Optionally, the first execution unit determines, based on the first information, an available direct communication interface frequency resource set of each transmission path in the case of overlapping transmission according to a Packet Data Convergence Protocol (PDCP), and then the device: When the first terminal device uses the network-configured resource allocation mode, the first terminal device further includes a second sending unit for sending to the network device an available direct communication interface frequency resource set of each transmission path in the case of overlapping transmission according to the PDCP.

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

[0193] Optionally, when the direct communication interface frequency resource set includes at least two frequency resources, the device: The present invention further includes a selection unit for selecting, for a logic channel corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP, one target direct communication interface frequency resource from a direct communication interface frequency resource set corresponding to the transmission path to transmit data.

[0194] Optionally, the first instruction information is: A channel occupancy rate (CBR) or a channel occupancy (CO) in each direct communication interface frequency resource of the first terminal device; direct communication interface parameters in each direct communication interface frequency resource of the first terminal device, 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); a direct communication interface frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, which is desired for the first terminal device; and and an available direct communication interface frequency resource set of the direct communication interface in case of overlapping transmission according to PDCP, which is desired for the first terminal device.

[0195] Optionally, the second instruction information is: CBR or CO in each direct communication interface frequency resource of the second terminal device; sidelink parameters in each direct communication interface frequency resource of the second terminal device; a sidelink parameter frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, desired for the second terminal device; and the available sidelink parameter frequency resource set of the direct communication interface in case of PDCP overlap desired for the second terminal device.

[0196] It should be noted that the device embodiment corresponds one-to-one with the above method embodiment, and all of the implementation methods in the above method embodiment can be applied to the device embodiment, and similar technical effects can be obtained.

[0197] The division of units in the embodiments of the present disclosure is merely an example and represents a division of logic functions. In actual implementation, other division methods may be used. Furthermore, the functional units in the embodiments of the present disclosure may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The combined units may be realized in the form of hardware or software functional units.

[0198] The above-mentioned combined units may be realized in the form of software functional units and stored in a processor-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present disclosure, in essence, in other words, the portion contributing to the related art or all or part of the technical solution, may be expressed in the form of a software product. The computer software product is stored in a storage medium and includes some commands for causing a computer device (which may be a personal computer, a server, a network device, etc.) to execute some or all of the steps in the methods described in each embodiment of the present disclosure. The above-mentioned storage medium includes various media capable of storing program code, such as a U disk, a removable disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0199] As shown in FIG. 8 , an embodiment of the present disclosure further provides a terminal device, wherein the terminal device is a first terminal device, including a processor 800, a transceiver 810, a memory 820, and a program stored in the memory 820 and run by the processor 800, wherein the transceiver 810 is connected to the processor 800 and the memory 820 by a bus interface, and the processor 800 reads the program in the memory and executes: and performing a process of obtaining an available direct communication interface frequency resource set for each transmission path in case of overlapping transmission according to Packet Data Convergence Protocol (PDCP) based on the first information.

[0200] Here, the first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is indication information of a direct communication interface frequency resource determined by a first terminal device; and and second indication information that is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0201] The transceiver 810 is controlled by the processor 800 to transmit and receive data.

[0202] Note that in FIG. 8, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors, including processor 800, are connected to various memory circuits, including memory 820. The bus architecture may further connect various other circuits, such as peripheral devices, voltage regulators, and power management circuits, as is well known in the art. Therefore, further description is omitted herein. The bus interface provides an interface. The transceiver 810 may be multiple elements, i.e., includes a transmitter and a receiver, and provides a unit for communicating with various other devices over a transmission medium. These transmission media include wireless channels, wired channels, fiber optic cables, and the like. For different user devices, the user interface 830 may further be an interface that allows external and internal connections to the required devices. The connected devices may include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like.

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

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

[0205] The processor executes any one of the methods provided by the embodiments of the present disclosure according to the executable commands obtained by calling the computer program stored in the memory. The processor and the memory may be physically separated from each other.

[0206] Optionally, the processor reads the computer program in the memory and executes: an operation of transmitting the first information to a network device serving a first terminal device, and receiving available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission according to PDCP transmitted from the network device, wherein the direct communication interface frequency resource sets are determined by the network device based on the first information; or and further performing an operation of determining, based on the first information, an available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission according to PDCP.

[0207] Optionally, the available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission using PDCP include direct communication interface frequency resource sets corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission using PDCP.

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

[0209] Optionally, the direct communication interface frequency resources in the direct communication interface frequency resource set are: a direct communication interface carrier, and / or Includes direct communication interface bandwidth portion (BWP).

[0210] Optionally, the processor reads the computer program in the memory and executes: and for performing an operation of transmitting the first information to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface Radio Resource Control (RRC) signaling.

[0211] Optionally, the processor reads the computer program in the memory and executes: and further performing an operation of acquiring, based on the second information, a logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP.

[0212] Here, the second information is an available LCID of a first terminal device in a unicast connection between the first terminal device and a second terminal device; an LCID for PDCP duplicate transmission on a direct communication interface recommended for a first terminal device in a unicast connection between the first terminal device and a second terminal device; and an LCID reserved for duplicate transmission by PDCP on a direct communication interface from a first terminal device in a unicast connection between the first terminal device and a second terminal device.

[0213] Optionally, the processor reads the computer program in the memory and executes: An operation of transmitting the second information to a network device providing a service to a first terminal device, and receiving LCIDs corresponding to each transmission path of the SLRB transmitted from the network device in the case of duplicate transmission using PDCP, wherein the LCIDs are determined by the network device providing a service to the first terminal device based on the second information; or The second information is used to perform an operation of determining the LCID corresponding to each transmission path of the SLRB in the case of overlapping transmission according to PDCP.

[0214] Optionally, the processor reads the computer program in the memory and executes: Randomly selecting N LCIDs from the available LCIDs, each of the N LCIDs corresponding to a transmission path, where the LCIDs correspond one-to-one with the transmission paths, and N is equal to the number of transmission paths of the direct communication interface in the case of PDCP overlap transmission; or and for performing an operation of randomly selecting a first LCID from a first LCID set as an LCID of one transmission path of a direct communication interface in case of overlapping transmission using PDCP, and determining an LCID of another transmission path of the direct communication interface in case of overlapping transmission using PDCP according to an association relationship between the first LCID and the LCDI of a different transmission path, wherein the first LCID is an available LCID, and the first LCID set includes available LCIDs of the direct communication interfaces of the first terminal device and the second terminal device.

[0215] Optionally, the processor reads the computer program in the memory and executes: and for further performing an operation of transmitting the second information to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface Radio Resource Control (RRC) signaling.

[0216] Optionally, the processor reads the computer program in the memory and executes: and further performing an operation of transmitting, to a second terminal device, an available direct communication interface frequency resource set of each transmission path in the case of PDCP duplicate transmission, according to the setting signaling of PDCP duplicate transmission on the direct communication interface or the activation signaling of PDCP duplicate transmission on the direct communication interface.

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

[0218] Optionally, the processor reads the computer program in the memory and executes: When the first terminal device uses the network-configured resource allocation mode, the first terminal device further performs an operation of transmitting to the network device an available direct communication interface frequency resource set of each transmission path in the case of overlapping transmission according to the PDCP.

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

[0220] Optionally, when the direct communication interface frequency resource set includes at least two frequency resources, the processor reads a computer program in the memory and performs the following steps: and further performing an operation of selecting, for a logic channel corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP, one target direct communication interface frequency resource from a direct communication interface frequency resource set corresponding to the transmission path to transmit data.

[0221] Optionally, the first instruction information is: A channel occupancy rate (CBR) or a channel occupancy (CO) in each direct communication interface frequency resource of the first terminal device; direct communication interface parameters in each direct communication interface frequency resource of the first terminal device, 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); a direct communication interface frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, which is desired for the first terminal device; and and an available direct communication interface frequency resource set of the direct communication interface in case of overlapping transmission according to PDCP, which is desired for the first terminal device.

[0222] Optionally, the second instruction information is: CBR or CO in each direct communication interface frequency resource of the second terminal device; sidelink parameters in each direct communication interface frequency resource of the second terminal device; a sidelink parameter frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, desired for the second terminal device; and the available sidelink parameter frequency resource set of the direct communication interface in case of PDCP overlap desired for the second terminal device.

[0223] In addition, the terminal device provided by the embodiments of the present disclosure can implement all the method steps implemented by the method embodiments and can obtain similar technical effects. Here, detailed descriptions of the same parts and beneficial effects of the present embodiments as those of the method embodiments will be omitted.

[0224] An embodiment of the present disclosure further provides a computer-readable storage medium having a computer program stored therein, the computer program, when executed by a processor, causing steps of a method for acquiring frequency resources applied to a first terminal device to be realized. The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, and may include, but is not limited to, magnetic memory (e.g., soft disks, hard disks, magnetic cassettes, magneto-optical (MO) disks, etc.), optical memory (e.g., compact disks (CDs), digital versatile disks (DVDs), Blu-ray (registered trademark) discs (BDs), high-definition versatile discs (HVDs), etc.), and semiconductor memory (e.g., ROM, erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), non-volatile memory (NANDFLASH), solid state disks (SSDs)), etc.

[0225] As shown in FIG. 9 , an embodiment of the present disclosure provides a frequency resource determining apparatus 900 applied to a network device, the apparatus comprising: The present invention comprises a first determining unit 901 for determining, for a first terminal device, an available direct communication interface frequency resource set of each transmission path in case of overlapping transmission according to Packet Data Convergence Protocol (PDCP) based on the first information.

[0226] Here, the first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is indication information of a direct communication interface frequency resource determined by a first terminal device; and and second indication information that is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0227] Optionally, the device comprises: The device further comprises a first receiving unit for receiving the first information transmitted from the first terminal device.

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

[0229] Optionally, the device comprises: The device further comprises a second determining unit for determining, based on the second information, a logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP.

[0230] Here, the second information is an available LCID of a first terminal device in a unicast connection between the first terminal device and a second terminal device; an LCID for PDCP duplicate transmission on a direct communication interface recommended for a first terminal device in a unicast connection between the first terminal device and a second terminal device; and and an LCID reserved for duplicate transmission by PDCP on a direct communication interface from a first terminal device in a unicast connection between the first terminal device and a second terminal device.

[0231] Optionally, the second determining unit: Randomly selecting N LCIDs from the available LCIDs, each of the N LCIDs corresponding to a transmission path, where the LCIDs correspond one-to-one with the transmission paths, and N is equal to the number of transmission paths of the direct communication interface in the case of PDCP overlap transmission; or and for performing an operation of randomly selecting a first LCID from a first LCID set as an LCID of one transmission path of a direct communication interface in case of overlapping transmission using PDCP, and determining an LCID of another transmission path of the direct communication interface in case of overlapping transmission using PDCP according to an association relationship between the first LCID and the LCDI of a different transmission path, wherein the first LCID is an available LCID, and the first LCID set includes available LCIDs of the direct communication interfaces of the first terminal device and the second terminal device.

[0232] Optionally, the device comprises: The device further comprises a second receiving unit for receiving the second information transmitted from the first terminal device. Optionally, the second receiving unit: Receive second information transmitted from the first terminal device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface radio resource control (RRC) signaling.

[0233] Optionally, the device comprises: The device further comprises a third sending unit for sending, to a first terminal device, logic channel identifiers (LCIDs) corresponding to each transmission path of the SLRB in the case of overlap transmission according to PDCP.

[0234] Optionally, the device comprises: The wireless communication device further includes a fourth transmitting unit for transmitting, to the first terminal device, an available direct communication interface frequency resource set of each transmission path in the case of PDCP duplicate transmission, by setting signaling for PDCP duplicate transmission on the direct communication interface or by activating signaling for PDCP duplicate transmission on the direct communication interface.

[0235] Optionally, the activation signaling of PDCP duplicate transmission in the direct communication interface includes at least one of RRC signaling, a media access control element (MACCE), or physical layer signaling.

[0236] Optionally, the first instruction information is: A channel occupancy rate (CBR) or a channel occupancy (CO) in each direct communication interface frequency resource of the first terminal device; direct communication interface parameters in each direct communication interface frequency resource of the first terminal device, 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); a direct communication interface frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, which is desired for the first terminal device; and and an available direct communication interface frequency resource set of the direct communication interface in case of overlapping transmission according to PDCP, which is desired for the first terminal device.

[0237] Optionally, the second instruction information is: CBR or CO in each direct communication interface frequency resource of the second terminal device; sidelink parameters in each direct communication interface frequency resource of the second terminal device; a sidelink parameter frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, desired for the second terminal device; and the available sidelink parameter frequency resource set of the direct communication interface in case of PDCP overlap desired for the second terminal device.

[0238] Optionally, the available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission using PDCP include direct communication interface frequency resource sets corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission using PDCP.

[0239] Optionally, the number of the direct communication interface frequency resource sets is the same as the number of transmission paths in the case of overlapping transmission according to PDCP.

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

[0241] It should be noted that the device embodiment corresponds one-to-one with the above method embodiment, and all of the implementation methods in the above method embodiment can be applied to the device embodiment, and similar technical effects can be obtained.

[0242] The division of units in the embodiments of the present disclosure is merely an example and represents a division of logic functions. In actual implementation, other division methods may be used. Furthermore, the functional units in the embodiments of the present disclosure may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The combined units may be realized in the form of hardware or software functional units.

[0243] The above-mentioned combined units may be realized in the form of software functional units and stored in a processor-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present disclosure, in essence, in other words, the portion contributing to the related art or all or part of the technical solution, may be expressed in the form of a software product. The computer software product is stored in a storage medium and includes some commands for causing a computer device (which may be a personal computer, a server, a network device, etc.) to execute some or all of the steps in the methods described in each embodiment of the present disclosure. The above-mentioned storage medium includes various media capable of storing program code, such as a U disk, a removable disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0244] As shown in FIG. 10 , an embodiment of the present disclosure further provides a network device, which includes a processor 1000, a transceiver 1010, a memory 1020, and a program stored in the memory 1020 and run by the processor 1000, wherein the transceiver 1010 is connected to the processor 1000 and the memory 1020 by a bus interface, and the processor 1000 reads the program in the memory to: and for executing a process for determining, based on the first information, for a first terminal device, an available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission according to Packet Data Convergence Protocol (PDCP).

[0245] Here, the first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is indication information of a direct communication interface frequency resource determined by a first terminal device; and and second indication information that is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

[0246] The transceiver 1010 is controlled by the processor 1000 to transmit and receive data.

[0247] Note that in FIG. 10, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors, including processor 1000, are connected to various memory circuits, including memory 1020. The bus architecture may further connect various other circuits, such as peripheral devices, voltage regulators, and power management circuits. This is well known in the art and will not be further described herein. The bus interface provides an interface. The transceiver 1010 may be multiple elements, i.e., includes a transmitter and a receiver, and provides a unit for communicating with various other devices over a transmission medium. These transmission media include wireless channels, wired channels, fiber optic cables, and the like. For different user devices, the user interface 1030 may further be an interface that allows external and internal connections to the required devices. The connected devices may include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0248] The processor 1000 is responsible for managing the bus architecture and for general processing, and the memory 1020 may store data used during the operation of the processor 1000 .

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

[0250] The processor executes any one of the methods provided by the embodiments of the present disclosure according to executable commands obtained by calling a computer program stored in the memory. The processor and the memory may be physically separated from each other.

[0251] Optionally, the processor reads the computer program in the memory and executes: The device is further adapted to perform an operation of receiving, by the transceiver, the first information transmitted from the first terminal device.

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

[0253] Optionally, the processor reads the computer program in the memory and executes: and further performing an operation of determining, based on the second information, a logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP.

[0254] Here, the second information is an available LCID of a first terminal device in a unicast connection between the first terminal device and a second terminal device; an LCID for PDCP duplicate transmission on a direct communication interface recommended for a first terminal device in a unicast connection between the first terminal device and a second terminal device; and an LCID reserved for duplicate transmission by PDCP on a direct communication interface from a first terminal device in a unicast connection between the first terminal device and a second terminal device.

[0255] Optionally, the processor reads the computer program in the memory and executes: Randomly selecting N LCIDs from the available LCIDs, each of the N LCIDs corresponding to a transmission path, where the LCIDs correspond one-to-one with the transmission paths, and N is equal to the number of transmission paths of the direct communication interface in the case of PDCP overlap transmission; or and further perform the operation of randomly selecting a first LCID from the first LCID set as an LCID of one transmission path of the direct communication interface in case of overlapping transmission according to PDCP, and determining, according to an association relationship between the first LCID and the LCDI of a different transmission path, an LCID of another transmission path of the direct communication interface in case of overlapping transmission according to PDCP, wherein the first LCID is an available LCID, and the first LCID set includes available LCIDs of the direct communication interfaces of the first terminal device and the second terminal device.

[0256] Optionally, the processor reads the computer program in the memory and executes: The device is further configured to perform an operation of receiving second information transmitted from the first terminal device.

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

[0258] Optionally, the processor reads the computer program in the memory and executes: The method further includes performing an operation of sending, by the transceiver, logic channel identifiers (LCIDs) corresponding to each transmission path of the SLRB in the case of overlapping transmission according to PDCP, to a first terminal device.

[0259] Optionally, the processor reads the computer program in the memory and executes: The transceiver is further configured to perform an operation of transmitting, to the first terminal device, an available direct communication interface frequency resource set for each transmission path in the case of PDCP duplicate transmission, by setting signaling for PDCP duplicate transmission on the direct communication interface or by activating signaling for PDCP duplicate transmission on the direct communication interface.

[0260] Optionally, the activation signaling of PDCP duplicate transmission in the direct communication interface includes at least one of RRC signaling, a media access control element (MACCE), or physical layer signaling.

[0261] Optionally, the first instruction information is: A channel occupancy rate (CBR) or a channel occupancy (CO) in each direct communication interface frequency resource of the first terminal device; direct communication interface parameters in each direct communication interface frequency resource of the first terminal device, 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); a direct communication interface frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, which is desired for the first terminal device; and and an available direct communication interface frequency resource set of the direct communication interface in case of overlapping transmission according to PDCP, which is desired for the first terminal device.

[0262] Optionally, the second instruction information is: CBR or CO in each direct communication interface frequency resource of the second terminal device; sidelink parameters in each direct communication interface frequency resource of the second terminal device; a sidelink parameter frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, desired for the second terminal device; and the available sidelink parameter frequency resource set of the direct communication interface in case of PDCP overlap desired for the second terminal device.

[0263] Optionally, the available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission using PDCP include direct communication interface frequency resource sets corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission using PDCP.

[0264] Optionally, the number of the direct communication interface frequency resource sets is the same as the number of transmission paths in the case of overlapping transmission according to PDCP.

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

[0266] The network device provided by the embodiments of the present disclosure can implement all the method steps implemented by the method embodiments and can achieve similar technical effects, so detailed descriptions of the same parts and beneficial effects of the present embodiments as those of the method embodiments will be omitted.

[0267] An embodiment of the present disclosure further provides a computer-readable storage medium having a computer program stored therein, the computer program, when executed by a processor, causing the computer program to implement steps of a frequency resource acquisition method applied to a network device. The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, and may include, but is not limited to, magnetic memory (e.g., soft disk, hard disk, magnetic cassette, magnetic disk (MO)), optical memory (e.g., CD, DVD, BD, HVD), and semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid state disk (SSD)), etc.

[0268] As will be appreciated by those skilled in the art, embodiments of the present disclosure may be provided as a method, a system, or a computer program product. Therefore, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied in one or more computer-usable storage media (including, but not limited to, disk memory, optical memory, etc.) containing computer-usable program code.

[0269] The present disclosure has been described with reference to flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or block in the flowcharts and / or block diagrams, or a combination of processes and / or blocks in the flowcharts and / or block diagrams, may be implemented by computer-executable program instructions. These computer-executable commands may be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to cause an apparatus to implement the function specified in one or more processes in the flowcharts and / or one or more blocks in the block diagrams, according to the commands executed by the processor of the computer or other programmable data processing device.

[0270] These processor-executable instructions may be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to operate in a particular manner, such that the commands stored in the processor-readable memory cause a product that includes a command device to implement the functions specified in one or more processes in the flowcharts and / or one or more blocks in the block diagrams.

[0271] These processor-executable instructions may be loaded into a computer or other programmable data processing apparatus to cause the computer or other programmable apparatus to perform a series of operational steps to produce a computer-implemented process, and the commands executed by the computer or other programmable apparatus provide steps for implementing the function(s) specified in the process(es) in the flowcharts and / or the block(s) in the block diagrams.

[0272] Obviously, those skilled in the art can make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure, and therefore, if these modifications and variations to the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. A frequency resource acquisition method performed by a first terminal device, comprising: According to the first information, obtaining an available direct communication interface frequency resource set for each transmission path in case of overlapping transmission according to Packet Data Convergence Protocol (PDCP); The first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is an indication information of a direct communication interface frequency resource determined by the first terminal device; and and second indication information, the second indication information being indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

2. Obtaining an available direct communication interface frequency resource set for each transmission path in case of overlapping transmission according to Packet Data Convergence Protocol (PDCP) based on the first information includes: Sending the first information to a network device serving a first terminal device, and receiving available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission according to PDCP sent from the network device, wherein the direct communication interface frequency resource sets are determined by the network device based on the first information; or The method of claim 1 , comprising: determining an available direct communication interface frequency resource set for each transmission path in case of overlapping transmission according to PDCP based on the first information.

3. 3. The method of claim 1, wherein the available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission using PDCP include direct communication interface frequency resource sets corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission using PDCP.

4. The method according to claim 1 or 2, wherein the number of the direct communication interface frequency resource sets is equal to the number of transmission paths in the case of overlapping transmission according to PDCP.

5. The direct communication interface frequency resources in the direct communication interface frequency resource set include: a direct communication interface carrier, and / or The method of claim 1 or 2, comprising a direct communication interface bandwidth portion (BWP).

6. transmitting the first information to a network device that provides a service to the first terminal device, 3. The method of claim 2, comprising transmitting the first information to the network equipment by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface Radio Resource Control (RRC) signaling.

7. The method further includes obtaining, based on the second information, a logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP; The second information is an available LCID of a first terminal device in a unicast connection between the first terminal device and a second terminal device; an LCID for duplicate transmission according to PDCP on a direct communication interface recommended for a first terminal device in a unicast connection between the first terminal device and a second terminal device; 2. The method of claim 1, further comprising at least one of: an LCID reserved for duplicate transmissions by PDCP on a direct communication interface from a first terminal device in a unicast connection between the first terminal device and the second terminal device;

8. According to the first information, obtaining an LCID corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of duplicate transmission by PDCP includes: Sending the second information to a network device providing a service to a first terminal device, and receiving an LCID corresponding to each transmission path of the SLRB sent from the network device in the case of duplicate transmission by PDCP, wherein the LCID is determined by the network device providing a service to the first terminal device based on the second information; or The method of claim 7, further comprising determining, based on the second information, an LCID corresponding to each transmission path of the SLRB in case of overlapping transmission by PDCP.

9. According to the second information, obtaining an LCID corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP includes: Randomly selecting N LCIDs from available LCIDs, each of the N LCIDs corresponding to a transmission path, where the LCIDs correspond one-to-one with the transmission paths, and N is equal to the number of transmission paths of the direct communication interface in the case of duplicate transmission according to PDCP; or 9. The method of claim 8, comprising: randomly selecting a first LCID from a first LCID set as an LCID of one transmission path of a direct communication interface in case of overlapping transmission using PDCP; and determining an LCID of another transmission path of the direct communication interface in case of overlapping transmission using PDCP according to an association relationship between the first LCID and an LCDI of a different transmission path, wherein the first LCID is an available LCID, and the first LCID set includes available LCIDs of direct communication interfaces of a first terminal device and a second terminal device.

10. transmitting the second information to a network device providing a service to the first terminal device, 10. The method of claim 8, comprising transmitting the second information to the network equipment by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface Radio Resource Control (RRC) signaling.

11. 2. The method of claim 1, further comprising: transmitting, to the second terminal device, by PDCP-based duplicate transmission on the direct communication interface configuration signaling or PDCP-based duplicate transmission on the direct communication interface activation signaling, an available direct communication interface frequency resource set for each transmission path in the case of PDCP-based duplicate transmission.

12. 12. The method of claim 11, wherein the activation signaling of duplicate transmission by PDCP on the direct communication interface includes at least one of RRC signaling, media access control control element (MAC CE), or physical layer signaling.

13. After determining an available direct communication interface frequency resource set of each transmission path in the case of overlapping transmission according to the first information, the method includes:

3. The method of claim 2, further comprising: when the first terminal device uses a network-configured resource allocation mode, transmitting to a network device an available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission according to the PDCP.

14. The method of claim 1 , wherein the direct communication interface frequency resource set includes one or more direct communication interface frequency resources.

15. When the direct communication interface frequency resource set includes at least two frequency resources, the method further comprises:

2. The method of claim 1, further comprising: for a logical channel corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP, selecting one target direct communication interface frequency resource from a direct communication interface frequency resource set corresponding to the transmission path to transmit data.

16. The first instruction information is a channel occupancy rate (CBR) or a channel occupancy (CO) on each direct communication interface frequency resource of the first terminal device; direct communication interface parameters in each direct communication interface frequency resource of the first terminal device, 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); a direct communication interface frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, which is desired for the first terminal device; and 2. The method of claim 1, further comprising: a set of available direct communication interface frequency resources of the direct communication interface in case of duplicate transmission according to PDCP, the set of available direct communication interface frequency resources being desired for the first terminal device.

17. The second instruction information is CBR or CO on each direct communication interface frequency resource of the second terminal equipment; sidelink parameters for each direct communication interface frequency resource of the second terminal device; a sidelink parameter frequency resource set corresponding to a transmission path of the direct communication interface in case of overlapping transmission according to PDCP, desired for the second terminal device; and 10. The method of claim 1, further comprising: a desired set of available sidelink parameters of a direct communication interface in case of overlapping according to PDCP for the second terminal device; and a frequency resource set of available sidelink parameters of a direct communication interface in case of overlapping according to PDCP for the second terminal device.

18. A method for determining frequency resources performed by a network device, comprising: determining, for a first terminal device, an available direct communication interface frequency resource set of each transmission path in case of overlapping transmission according to Packet Data Convergence Protocol (PDCP) based on the first information; The first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is an indication information of a direct communication interface frequency resource determined by the first terminal device; and and second indication information, the second indication information being indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

19. 20. The method of claim 18, further comprising receiving the first information transmitted from the first terminal device.

20. Receiving the first information transmitted from the first terminal device includes:

20. The method of claim 19, comprising receiving first information transmitted from a first terminal device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface Radio Resource Control (RRC) signaling.

21. determining, based on the second information, a logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP; The second information is an available LCID of a first terminal device in a unicast connection between the first terminal device and a second terminal device; an LCID for duplicate transmission according to PDCP on a direct communication interface recommended for a first terminal device in a unicast connection between the first terminal device and a second terminal device; 19. The method of claim 18, wherein the LCID is reserved for duplicate transmissions by PDCP on a direct communication interface from a first terminal device in a unicast connection between the first terminal device and a second terminal device.

22. determining, based on the second information, logic channel identifiers (LCIDs) corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP; Randomly selecting N LCIDs from available LCIDs, each of the N LCIDs corresponding to a transmission path, where the LCIDs correspond one-to-one with the transmission paths, and N is equal to the number of transmission paths of the direct communication interface in the case of duplicate transmission according to PDCP; or 22. The method of claim 21, comprising: randomly selecting a first LCID from a first LCID set as an LCID of one transmission path of a direct communication interface in case of overlapping transmission using PDCP; and determining an LCID of another transmission path of the direct communication interface in case of overlapping transmission using PDCP according to an association relationship between the first LCID and an LCDI of a different transmission path, wherein the first LCID is an available LCID, and the first LCID set includes available LCIDs of direct communication interfaces of a first terminal device and a second terminal device.

23. 22. The method of claim 21, further comprising receiving the second information transmitted from the first terminal device.

24. Receiving the first information transmitted from the first terminal device includes:

24. The method of claim 23, comprising receiving second information sent from the first terminal device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface Radio Resource Control (RRC) signaling.

25. 22. The method of claim 21, further comprising: transmitting, to a first terminal device, logic channel identifiers (LCIDs) corresponding to each transmission path of the SLRB in case of overlapping transmission by PDCP.

26. 19. The method of claim 18, further comprising: transmitting, to the first terminal device, by PDCP-based duplicate transmission on the direct communication interface configuration signaling or PDCP-based duplicate transmission on the direct communication interface activation signaling, an available direct communication interface frequency resource set for each transmission path in the case of PDCP-based duplicate transmission.

27. 27. The method of claim 26, wherein the activation signaling of duplicate transmission by PDCP on the direct communication interface includes at least one of RRC signaling, media access control control element (MAC CE), or physical layer signaling.

28. a first terminal device, the first terminal device including a memory, a transceiver, and a processor; The memory is for storing a computer program, and the transceiver is for transmitting and receiving data under the control of the processor, and the processor reads the computer program in the memory and and performing an operation of obtaining an available direct communication interface frequency resource set of each transmission path in the case of overlapping transmission according to a Packet Data Convergence Protocol (PDCP) based on the first information; The first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is an indication information of a direct communication interface frequency resource determined by the first terminal device; and and second indication information that is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

29. The processor reads the computer program in the memory and an operation of transmitting the first information to a network device serving a first terminal device, and receiving available direct communication interface frequency resource sets of each transmission path in the case of overlapping transmission according to PDCP transmitted from the network device, wherein the direct communication interface frequency resource sets are determined by the network device based on the first information; or 29. The terminal device according to claim 28, wherein the terminal device is configured to perform an operation of determining, based on the first information, an available direct communication interface frequency resource set for each transmission path in case of overlapping transmission according to PDCP.

30. The processor reads the computer program in the memory and 30. The terminal device of claim 29, wherein the terminal device is for performing an operation of transmitting the first information to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface Radio Resource Control (RRC) signaling.

31. The processor reads the computer program in the memory and and further performing an operation of acquiring, according to the second information, a logic channel identifier (LCID) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of overlapping transmission by PDCP; The second information is an available LCID of a first terminal device in a unicast connection between the first terminal device and a second terminal device; an LCID for duplicate transmission according to PDCP on a direct communication interface recommended for a first terminal device in a unicast connection between the first terminal device and a second terminal device; 29. The terminal device of claim 28, wherein the LCID includes at least one of: an LCID reserved for duplicate transmissions by PDCP on a direct communication interface from a first terminal device in a unicast connection between the first terminal device and a second terminal device.

32. The processor reads the computer program in the memory and An operation of transmitting the second information to a network device providing a service to a first terminal device, and receiving an LCID corresponding to each transmission path of the SLRB transmitted from the network device in the case of duplicate transmission by PDCP, wherein the LCID is determined by the network device providing a service to the first terminal device based on the second information, or The terminal device according to claim 31, wherein the terminal device is configured to perform an operation of determining an LCID corresponding to each transmission path of an SLRB in the case of overlapping transmission according to PDCP based on the second information.

33. The processor reads the computer program in the memory and Randomly selecting N LCIDs from available LCIDs, each of the N LCIDs corresponds to a transmission path, where the LCIDs correspond one-to-one with the transmission paths, and N is equal to the number of transmission paths of the direct communication interface in the case of PDCP duplicate transmission; or 33. The terminal device of claim 32, for performing an operation: randomly selecting a first LCID from a first LCID set as an LCID of one transmission path of a direct communication interface in case of overlapping transmission using PDCP; and determining an LCID of another transmission path of the direct communication interface in case of overlapping transmission using PDCP according to an association relationship between the first LCID and the LCDI of a different transmission path, wherein the first LCID is an available LCID, and the first LCID set includes available LCIDs of direct communication interfaces of a first terminal device and a second terminal device.

34. The processor reads the computer program in the memory and 33. The terminal device of claim 32, further configured to perform an operation of transmitting the second information to the network device by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface Radio Resource Control (RRC) signaling.

35. The processor reads the computer program in the memory and 29. The terminal device of claim 28, further configured to perform an operation of transmitting, to a second terminal device, an available direct communication interface frequency resource set for each transmission path in the case of PDCP duplicate transmission, by a configuration signaling for PDCP duplicate transmission on the direct communication interface or an activation signaling for PDCP duplicate transmission on the direct communication interface.

36. The processor reads the computer program in the memory and 29. The terminal device of claim 28, further configured to perform an operation of transmitting, to a network device, an available direct communication interface frequency resource set for each transmission path in the case of overlapping transmission by the PDCP, when the first terminal device uses a network-configured resource allocation mode.

37. The processor reads the computer program in the memory and 29. The terminal device of claim 28, further configured to perform an operation of selecting, for a logical channel corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of overlapping transmission according to PDCP, one target direct communication interface frequency resource from a direct communication interface frequency resource set corresponding to the transmission path to transmit data.

38. a memory, a transceiver, and a processor; The memory is for storing a computer program, and the transceiver is for transmitting and receiving data under the control of the processor, and the processor reads the computer program in the memory and and performing an operation of determining, for a first terminal device, an available direct communication interface frequency resource set of each transmission path in case of overlapping transmission according to a Packet Data Convergence Protocol (PDCP) based on the first information; The first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is an indication information of a direct communication interface frequency resource determined by the first terminal device; and and second indication information that is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

39. A frequency resource acquisition device applied to a first terminal device, comprising: A first obtaining unit is provided for obtaining an available direct communication interface frequency resource set of each transmission path in case of overlapping transmission according to a Packet Data Convergence Protocol (PDCP) according to the first information; The first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is an indication information of a direct communication interface frequency resource determined by the first terminal device; and and second indication information, which is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

40. The first acquisition unit: Sending the first information to a network device providing a service to a first terminal device, and receiving available direct communication interface frequency resource sets for each transmission path in the case of overlapping transmission according to PDCP sent from the network device, wherein the direct communication interface frequency resource sets are determined by the network device based on the first information; or 40. The apparatus of claim 39, further comprising: determining an available direct communication interface frequency resource set for each transmission path in case of overlapping transmission according to PDCP based on the first information.

41. 41. The apparatus of claim 39 or 40, wherein the available direct communication interface frequency resource sets for each transmission path in the case of duplicate transmission with PDCP include direct communication interface frequency resource sets corresponding to each transmission path of a direct communication interface radio bearer (SLRB) in the case of duplicate transmission with PDCP.

42. 41. The apparatus according to claim 39 or 40, wherein the number of the direct communication interface frequency resource sets is the same as the number of transmission paths in case of overlapping transmission according to PDCP.

43. The direct communication interface frequency resources in the direct communication interface frequency resource set include: a direct communication interface carrier, and / or 41. Apparatus according to claim 39 or 40, comprising a direct communication interface bandwidth portion (BWP).

44. The first acquisition unit:

41. The apparatus of claim 40, for transmitting the first information to the network equipment by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface Radio Resource Control (RRC) signaling.

45. a second acquiring unit for acquiring, based on the second information, logic channel identifiers (LCIDs) corresponding to each transmission path of the direct communication interface radio bearer (SLRB) in the case of duplicate transmission according to PDCP; The second information is an available LCID of a first terminal device in a unicast connection between the first terminal device and a second terminal device; an LCID for duplicate transmission according to PDCP on a direct communication interface recommended for a first terminal device in a unicast connection between the first terminal device and a second terminal device; 40. The apparatus of claim 39, further comprising at least one of: an LCID reserved for duplicate transmissions by PDCP on a direct communication interface from a first terminal device in a unicast connection between the first terminal device and a second terminal device.

46. The second acquisition unit: The second information is transmitted to a network device providing a service to a first terminal device, and an LCID corresponding to each transmission path of the SLRB transmitted from the network device in the case of duplicate transmission by PDCP is received, and the LCID is determined by the network device providing a service to the first terminal device based on the second information; or The apparatus of claim 45, further comprising: determining an LCID corresponding to each transmission path of the SLRB in the case of duplicate transmission by PDCP based on the second information.

47. The second acquisition unit: Randomly selecting N LCIDs from available LCIDs, each of the N LCIDs corresponding to a transmission path, where the LCIDs correspond one-to-one with the transmission paths, and N is equal to the number of transmission paths of the direct communication interface in the case of PDCP duplicate transmission; or 47. The apparatus of claim 46, wherein: randomly selecting a first LCID from a first LCID set as an LCID of one transmission path of a direct communication interface in case of overlapping transmission using PDCP; and determining an LCID of another transmission path of the direct communication interface in case of overlapping transmission using PDCP according to an association relationship between the first LCID and an LCDI of a different transmission path, wherein the first LCID is an available LCID, and the first LCID set includes available LCIDs of the direct communication interfaces of a first terminal device and a second terminal device.

48. The second acquisition unit:

47. The apparatus of claim 46, wherein the second information is transmitted to the network equipment by at least one of direct communication interface terminal information, terminal auxiliary information, and Uu interface Radio Resource Control (RRC) signaling.

49. A frequency resource determination device applied to a network device, comprising: a first determining unit for determining, for a first terminal device, an available direct communication interface frequency resource set of each transmission path in case of overlapping transmission according to a Packet Data Convergence Protocol (PDCP) based on the first information; The first information is a combination of a Layer 2 source address and a Layer 2 destination address in a unicast connection between a first terminal device and a second terminal device; First indication information, which is an indication information of a direct communication interface frequency resource determined by the first terminal device; and and second indication information that is indication information of a direct communication interface frequency resource received by the first terminal device from a second terminal device.

50. A processor-readable storage medium, A processor-readable storage medium having stored thereon a computer program for causing the processor to execute the method of any one of claims 1 to 27.

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