A method for determining copy transmission resources, a terminal device, and a network device.

Abstract

This invention provides a method, terminal device, and network device for determining duplicate transmission resources. Applied to the field of communication technology, it can reduce data transmission latency and improve data transmission reliability in NR-U. The invention includes: performing LBT detection on a target carrier in unlicensed spectrum to obtain the LBT result of the target carrier; and determining duplicate transmission resources based on the LBT result.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a method for determining a duplicated transmission resource, a terminal device and a network device. BACKGROUND

[0002] Currently, in order to ensure the reliability of data transmission and reduce the time delay of data transmission, for data that can be transmitted in a data duplication transmission manner, the duplicated transmission is usually transmitted through multiple transmission paths between the sending end and the receiving end, that is, the sending end (such as a terminal device) can transmit multiple copies of data to a media access control (MAC) entity through multiple radio link control (RLC) entities, and the data is transmitted to the receiving end (such as a network device) by the MAC entities through the air interface.

[0003] In the new radio unlicensed (NR-U) spectrum, before data transmission, the LBT mechanism needs to be used to listen to whether the carrier is idle, and only when the carrier is detected to be idle, the data can be transmitted through the carrier. If the carrier is detected to be occupied, a period of time needs to be waited for continued listening, and only when the carrier is detected to be idle, the data can be transmitted.

[0004] In the above-mentioned NR-U spectrum, even if the data is transmitted in a duplicated transmission manner, before the data is transmitted, the carrier needs to be listened to. In the case that the carrier is occupied, a period of time needs to be waited for, or only part of the duplicated transmission path can be used for transmitting data, or even in the case that the signal quality of the carrier is poor, the data can not be transmitted to the receiving end. Therefore, there is still a problem that the time delay of data transmission is large and the reliability of data transmission is low. SUMMARY

[0005] The embodiments of the present application provide a method for determining a duplicated transmission resource, a terminal device and a network device, which can reduce the time delay of data transmission in the NR-U and improve the reliability of data transmission.

[0006] In a first aspect, a method for determining a duplicated transmission resource is provided, comprising: performing LBT detection on a target carrier in an unlicensed spectrum to obtain an LBT result of the target carrier; and determining a duplicated transmission resource according to the LBT result.

[0007] Optionally, the LBT result comprises at least one of the following: an indication of LBT success, and an indication of LBT failure.

[0008] Optionally, the LBT result comprises at least one of the following: channel occupancy time, carrier identification, and partial bandwidth (BWP) identification.

[0009] Optionally, the channel occupancy time comprises at least two of the following:

[0010] The start time of the channel occupancy, the end time of the channel occupancy, and the duration of the channel occupancy.

[0011] Optionally, the duplication transmission resource comprises at least one of the following:

[0012] At least one duplication transmission path, a data share of the duplication transmission, and at least one first carrier; wherein the first carrier is a target carrier of the at least one duplication transmission path.

[0013] The carrier with the LBT result being LBT success.

[0014] Optionally, determining the duplication transmission resource according to the LBT result comprises:

[0015] Sending the LBT result to the network device;

[0016] Receiving first indication information sent by the network device, the first indication information being obtained according to the LBT result, the first indication information being used to indicate the duplication transmission resource, and the first indication information comprising at least one of the following: at least one radio bearer (RB) identifier, at least one duplication transmission path identifier, a data share of the duplication transmission, at least one first carrier identifier, and an indication of activating / deactivating the duplication transmission path.

[0017] Determining the duplication transmission resource according to the first indication information.

[0018] Optionally, the identifier of each duplication transmission path comprises at least one of the following: a radio link control (RLC) entity identifier, a logical channel identifier, and a cell group identifier.

[0019] Optionally, the identifier of each first carrier is at least one of the following: a carrier identifier and a bandwidth part (BWP) identifier.

[0020] Optionally, after determining the duplication transmission resource according to the LBT result, the method further comprises:

[0021] Sending the LBT result and / or information of the duplication transmission resource to the network device.

[0022] Optionally, before determining the duplication transmission resource according to the LBT result, the method further comprises:

[0023] Receiving second indication information sent by the network device, the second indication information being used to indicate that the terminal device is allowed to determine the duplication transmission resource.

[0024] Optionally, after determining the duplication transmission resource according to the LBT result, the method further comprises:

[0025] activating a target one of the at least one duplicated transmission path, and / or activating a target one of the at least one first carrier.

[0026] Optionally, after determining the duplicated transmission resource according to the LBT result, the method further comprises:

[0027] activating time-frequency resources corresponding to the target duplicated transmission path;

[0028] and / or,

[0029] activating time-frequency resources corresponding to the target first carrier.

[0030] Optionally, before activating the target one of the at least one duplicated transmission path and the target one of the at least one first carrier, the method further comprises:

[0031] receiving third indication information sent by the terminal device, the third indication information being used to indicate activation of the target duplicated transmission path and / or activation of the target first carrier.

[0032] Optionally, before performing LBT detection on the target carrier in the unlicensed frequency spectrum to obtain the LBT result of the target carrier, the method further comprises:

[0033] receiving fourth indication information sent by the network device, the fourth indication information being used to indicate configuration information of the duplicated transmission, the fourth indication information comprising: identification of at least one RB, and identification of each RB corresponding to identification of at least one duplicated transmission path;

[0034] configuring the duplicated transmission path, and configuring a correspondence between the duplicated transmission path and the RB.

[0035] Optionally, the fourth indication information further comprises: identification of at least one second carrier corresponding to identification of each duplicated transmission path.

[0036] Optionally, determining the duplicated transmission resource according to the LBT result comprises:

[0037] determining the duplicated transmission resource according to the LBT result and the configuration information of the duplicated transmission indicated in the fourth indication information.

[0038] Optionally, the target carrier is all carriers in the unlicensed frequency spectrum;

[0039] or,

[0040] the target carrier is a carrier in the at least one second carrier;

[0041] or,

[0042] the target carrier is a carrier in the unlicensed frequency spectrum in an activated state;

[0043] Or,

[0044] The target carrier is a carrier in an active state in the at least one second carrier.

[0045] Optionally, before the LBT detection on the target carrier in the unlicensed frequency spectrum is performed to obtain the LBT result of the target carrier, the method further includes:

[0046] Receiving fifth indication information sent by the network device, the fifth indication information being used to indicate an initial mode of the duplicated transmission.

[0047] Optionally, after the duplicated transmission resource is determined according to the LBT result, the method further includes:

[0048] The data is transmitted to the network device by using the duplicated transmission resource.

[0049] Optionally, after the duplicated transmission resource is obtained according to the LBT result, the method further includes:

[0050] Receiving sixth indication information sent by the network device, the sixth indication information being used to indicate an update of the duplicated transmission resource.

[0051] In a second aspect, a method for determining a duplicated transmission resource is provided, including:

[0052] Receiving an LBT result sent by a terminal device, the LBT result being obtained by performing LBT detection on a target carrier in an unlicensed frequency spectrum;

[0053] Determining a duplicated transmission resource according to the LBT result.

[0054] Optionally, the LBT result includes at least one of the following: an indication of LBT success, an indication of LBT failure.

[0055] Optionally, the LBT result includes at least one of the following: channel occupancy time, carrier identifier, and BWP identifier.

[0056] Optionally, the channel occupancy time includes at least two of the following:

[0057] A starting time of channel occupancy, an ending time of channel occupancy, and a duration of channel occupancy.

[0058] Optionally, the duplicated transmission resource includes at least one of the following:

[0059] At least one duplicated transmission path, a number of data shares of the duplicated transmission, and at least one first carrier; wherein the first carrier is a carrier in an active state in the target carrier.

[0060] The LBT result of the carrier in the target carrier is LBT success.

[0061] Optionally, after determining the duplication transmission resource according to the LBT result, the method further comprises:

[0062] sending first indication information to the terminal device, the first indication information being used for indicating the duplication transmission resource, the first indication information comprising at least one of the following: at least one RB identifier, at least one duplication transmission path identifier, at least one first carrier identifier, and an indication of activating / deactivating a duplication transmission path.

[0063] Optionally, the identifier of each duplication transmission path comprises at least one of the following: an RLC entity identifier, a logical channel identifier, and a cell group identifier.

[0064] Optionally, the identifier of each first carrier is at least one of the following: a carrier identifier and a partial bandwidth BWP identifier.

[0065] Optionally, the method further comprises:

[0066] receiving the LBT result and / or the information of the duplication transmission resource sent by the terminal device.

[0067] Optionally, before receiving the information of the duplication transmission resource sent by the terminal device, the method further comprises:

[0068] sending second indication information to the terminal device, the second indication information being used for indicating that the terminal device is allowed to determine the duplication transmission resource.

[0069] Optionally, after determining the duplication transmission resource according to the LBT result, or after receiving the information of the duplication transmission resource sent by the terminal device, the method further comprises:

[0070] sending third indication information to the terminal device, the third indication information being used for indicating that a target duplication transmission path in the at least one duplication transmission path is activated, and / or indicating that a first target carrier in the at least one first carrier is activated.

[0071] Optionally, before receiving the LBT result sent by the terminal device, the method further comprises:

[0072] determining configuration information of the duplication transmission;

[0073] sending fourth indication information to the terminal device, the fourth indication information being used for indicating the configuration information of the duplication transmission, the fourth indication information comprising: at least one RB identifier, and an identifier of each RB corresponding to at least one duplication transmission path identifier.

[0074] Optionally, the fourth indication information further comprises: an identifier of each duplication transmission path corresponding to at least one second carrier identifier.

[0075] Optionally, determining the duplication transmission resource according to the LBT result comprises:

[0076] determining the duplication transmission resource according to the LBT result and the configuration information of the duplication transmission.

[0077] Optionally, the target carrier is all carriers in the unlicensed spectrum.

[0078] Alternatively,

[0079] the target carrier is a carrier in the at least one second carrier.

[0080] Alternatively,

[0081] the target carrier is a carrier in the unlicensed spectrum in an active state.

[0082] Alternatively,

[0083] the target carrier is a carrier in the at least one second carrier in an active state.

[0084] Optionally, before receiving the LBT result of the target carrier in the unlicensed spectrum sent by the terminal device, the method further comprises:

[0085] sending fifth indication information to the terminal device, the fifth indication information being used to indicate an initial mode of the duplication transmission.

[0086] Optionally, after determining the duplication transmission resource according to the LBT result, the method further comprises:

[0087] sending sixth indication information to the terminal device, the sixth indication information being used to indicate an updated duplication transmission resource.

[0088] In a third aspect, a terminal device is provided, comprising: a processing module configured to perform LBT detection on a target carrier in an unlicensed spectrum to obtain an LBT result of the target carrier, and determine a duplication transmission resource according to the LBT result.

[0089] In a fourth aspect, a network device is provided, comprising: a receiving module configured to receive an LBT result sent by a terminal device, the LBT result being obtained by performing LBT detection on a target carrier in an unlicensed spectrum;

[0090] a processing module configured to determine a duplication transmission resource according to the LBT result.

[0091] In a fifth aspect, a terminal device is provided, comprising:

[0092] a processor configured to perform LBT detection on a target carrier in an unlicensed spectrum to obtain an LBT result of the target carrier, and determine a duplication transmission resource according to the LBT result.

[0093] In a sixth aspect, a network device is provided, comprising:

[0094] The receiver is used to receive the LBT result sent by the terminal device. The LBT result is obtained by performing LBT detection on the target carrier in the unlicensed spectrum.

[0095] The processor is used to determine the replication transfer resources based on the LBT results.

[0096] A seventh aspect provides a computer-readable storage medium comprising: computer instructions, which, when executed on a computer, cause the computer to perform a method as described in the first aspect or any optional implementation thereof, or to perform a method as described in the second aspect or any optional implementation thereof.

[0097] Eighthly, a computer program product is provided, comprising computer instructions that, when the computer program product is run on a computer, cause the computer to execute the computer instructions, such that the computer performs a method as described in the first aspect or any optional implementation thereof, or performs a method as described in the second aspect or any optional implementation thereof.

[0098] Ninth aspect, a chip is provided, which is coupled to a memory in a terminal device, such that the chip calls program instructions stored in the memory during operation, causing the terminal device to execute the method as described in the first aspect or any optional implementation of the first aspect.

[0099] In a tenth aspect, a chip is provided that is coupled to a memory in a network device, such that the chip, during operation, calls program instructions stored in the memory, causing the network device to execute a method as described in the second aspect or any of the optional implementations of the second aspect.

[0100] In this embodiment of the invention, a terminal device can perform LBT detection on a carrier in the unlicensed spectrum to obtain an LBT result. The terminal device can then select a resource for replication transmission (also referred to as "replication transmission resource" in this invention) based on the LBT result. Alternatively, the terminal device can send the LBT result to a network device, allowing the network device to select a replication transmission resource for the terminal device based on the received LBT result and indicate the selected replication transmission resource to the terminal device. Through this scheme, one or more data transmission paths can be determined for carriers with successful LBT in the unlicensed spectrum. Thus, when transmitting data using the unlicensed spectrum, multiple copies of data can be transmitted through multiple transmission paths. Attached Figure Description

[0101] Figure 1 A schematic diagram of the architecture of a wireless communication system provided in an embodiment of the present invention;

[0102] Figure 2A method for determining copy transmission resources provided in an embodiment of the present invention. Figure 1 ;

[0103] Figure 3 A method for determining copy transmission resources provided in an embodiment of the present invention. Figure 2 ;

[0104] Figure 4 A method for determining copy transmission resources provided in an embodiment of the present invention. Figure 3 ;

[0105] Figure 4 A method for determining copy transmission resources provided in an embodiment of the present invention. Figure 6 ;

[0106] Figure 5 A method for determining copy transmission resources provided in an embodiment of the present invention. Figure 7 ;

[0107] Figure 6 A method for determining copy transmission resources provided in an embodiment of the present invention. Figure 8 ;

[0108] Figure 7 A method for determining copy transmission resources provided in an embodiment of the present invention. Figure 9 ;

[0109] Figure 8 A method for determining copy transmission resources provided in an embodiment of the present invention. Figure 10 ;

[0110] Figure 9 A method for determining copy transmission resources provided in an embodiment of the present invention. Figure 11 ;

[0111] Figure 10 A method for determining copy transmission resources provided in an embodiment of the present invention. Figure 12 ;

[0112] Figure 13 A schematic diagram of a data replication and transmission architecture provided in an embodiment of the present invention;

[0113] Figure 14 This is a schematic diagram of the structure of a terminal device provided in an embodiment of the present invention;

[0114] Figure 15 A schematic diagram of the structure of a network device provided in an embodiment of the present invention;

[0115] Figure 16 This is a schematic diagram of the structure of a mobile phone provided in an embodiment of the present invention;

[0116] Figure 1 This is a schematic diagram of a base station structure provided in an embodiment of the present invention. Detailed Implementation

[0117] The technical solutions of the embodiments of the present invention will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0118] In embodiments of the present invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in embodiments of the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0119] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The symbol " / " in this article indicates that the related objects are in an "or" relationship; for example, A / B means A or B.

[0120] In the description of this invention, unless otherwise stated, "a plurality of" means two or more. For example, a plurality of transmission paths means two or more transmission paths.

[0121] The technical solution provided by this invention can be applied to various communication systems, such as 5G communication systems, future evolution systems, or multiple communication convergence systems. It can include various application scenarios, such as machine-to-machine (M2M), direct-to-many (D2M), macro-micro communication, enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (uRLLC), and massive machine-type communication (mMTC). For example, embodiments of this invention can be applied to communication between network devices and terminal devices in the NR-U of a 5G communication system.

[0122] In the Industrial Internet of Things (IIoT) scenario, 5G communication systems support the transmission of services such as factory automation, transport industry automation, and electrical power distribution over 5G communication systems. To ensure the reliability of these services, enhanced data replication and multiple connections are supported in the IIoT scenario.

[0123] The enhanced replication transmission method, based on Release 15's dual connectivity (DC) and carrier aggregation (CA) replication transmission, considers replication transmission scenarios with more than two legs. In this data replication transmission, data packets from a Packet Data Convergence Protocol (PDCP) entity can be transmitted by multiple corresponding RLC entities or logical channels; each corresponding RLC entity or logical channel is called a leg. That is, for a single PDCP entity, multiple legs (i.e., RLC entities or logical channels) can be configured to replicate and transmit multiple copies of the data, with each leg carrying one copy of the data. For example, with four legs configured, it can support the replication and transmission of up to four copies of the data.

[0124] Accordingly, in R16, in replication transmission based on DC and CA scenarios, one PDCP entity corresponds to a maximum of four RLC entities; in CA scenarios, one PDCP entity corresponds to a maximum of four RLC entities.

[0125] The replication transmission scheme used in the IIoT scenario has not yet been introduced into the NR-U scenario.

[0126] In the Ultra Reliability and Low Latency Communication (URLLC) scenario in Rel-17, we will consider how to apply the replication transmission scheme in the IIoT scenario to the NR-U scenario to improve the reliability of data transmission and reduce the latency of data transmission.

[0127] In December 2018, the 3GPP RAN Working Group approved the project (project number: WID RP-182878) for new radio (NR) operating in unlicensed spectrum. The goal of this project is to enable NR to operate in unlicensed spectrum, including the following operating scenarios:

[0128] Scenario A: Carrier aggregation scenario, where the primary cell (PCell) operates in the licensed frequency band, and secondary cells (SCell) operating in the unlicensed spectrum are aggregated through carrier aggregation.

[0129] Scenario B: Dual connectivity operating scenario, PCell operates in the licensed frequency band of the long-term evolution (LTE) system, and primary secondary cell (PSCell) operates in the unlicensed NR spectrum;

[0130] Scenario C: Standalone operation scenario, where NR operates as an independent cell in unlicensed spectrum;

[0131] Scenario D: NR single-cell scenario, uplink operates in licensed frequency bands, downlink operates in unlicensed spectrum;

[0132] Scenario E: Dual-connectivity working scenario, PCcell is the NR licensed frequency band, and PScell ​​is the NR unlicensed spectrum.

[0133] Generally, NR-U operates in the 5GHz and 6GHz unlicensed spectrum. On the unlicensed spectrum, NR-U design should ensure fairness with other systems already operating on these unlicensed spectrums (such as WiFi). The principle of fairness is that the impact of NR-U on systems already deployed on the unlicensed spectrum should not exceed the impact between these systems.

[0134] To ensure fair coexistence among systems on unlicensed spectrum, energy detection has been agreed upon as a fundamental coexistence mechanism. The typical energy detection mechanism is the LBT mechanism, which works as follows: Before transmitting data on unlicensed spectrum, a base station or terminal (transmitter) needs to listen for a specified period. If the listening result indicates that the carrier (or channel) is idle, the transmitter can transmit data to the receiver via that carrier. If the listening result indicates that the carrier is occupied, the transmitter needs to wait for a period before continuing to listen for the carrier until the carrier is idle, only then can it transmit data to the receiver.

[0135] In the new radio unlicensed (NR-U) spectrum, before data transmission can be performed, the LBT mechanism is required to listen for whether the carrier is idle. Data can only be transmitted through the carrier if the carrier is found to be idle. If the carrier is found to be occupied, the listener must wait for a period of time until the carrier is found to be idle before data can be transmitted.

[0136] In the aforementioned NR-U spectrum, even when using the copy transmission method to transmit data, it is still necessary to listen to the carrier before transmitting data. If the carrier is occupied, it may take a period of time to wait, or only a portion of the copy transmission path may be available for data transmission. In some cases, if the carrier signal quality is poor, the data may not be able to be transmitted to the receiving end. Therefore, there will still be problems with large data transmission delay and low data transmission reliability.

[0137] To address the aforementioned issues, embodiments of the present invention provide a method for determining duplicate transmission resources, a terminal device, and a network device. This method introduces duplicate transmission in NR-U to transmit data, and can flexibly determine duplicate transmission resources based on LBT results, thereby reducing data transmission latency and improving data transmission reliability.

[0138] The method for determining copy transmission resources provided in this invention can be applied to wireless communication systems. For example,... Figure 1 The diagram shown is a schematic representation of the system architecture of a wireless communication system according to an embodiment of the present invention. Figure 1 In this context, the wireless communication system includes terminal equipment and network equipment. In practical applications, the connection between the terminal equipment and the network equipment can be a wireless connection.

[0139] The method for determining replication and transmission resources provided in the embodiments of the present invention is applied in... Figure 1 In the wireless communication system shown, Figure 1 Terminal devices in the system can perform LBT detection on carriers in unlicensed spectrum to obtain LBT results. Based on the LBT results, the terminal device can then select resources for replication transmission, or send the LBT results to... Figure 2 The network device shown is configured to select a copy transmission resource for the terminal device based on the received LBT result and indicate the selected copy transmission resource to the terminal device. In this way, the terminal device can determine one or more data transmission paths (i.e., legs) for the carrier with successful LBT in the unlicensed spectrum. Thus, when transmitting data using the unlicensed spectrum, it is possible to transmit multiple copies of data through multiple transmission paths.

[0140] The terminal device in this embodiment of the invention can be referred to as user equipment (UE). This terminal device can be a personal communication service (PCS) phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), etc. It can also be a mobile phone, mobile station (MS), mobile terminal, or laptop computer. This terminal device can communicate with one or more core networks via a radio access network (RAN). For example, the terminal device can be a mobile phone (or "cellular" phone) or a computer with a mobile terminal. It can also be a portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile device that exchanges voice and / or data with the radio access network. The terminal device can also be a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved network. The above is just one example, and it is not limited to this in actual applications.

[0141] The network devices in this embodiment of the invention can be macro base stations (eNBs or e-NodeBs), micro base stations (also known as "small base stations"), pico base stations, access points (APs), transmission points (TPs), or new generation Node Bs (gNodeBs) in LTE systems, NR communication systems, or authorized auxiliary access long-term evolution (LAA-LTE) systems. The aforementioned network devices can also be other types of network devices in future 5G communication systems or future evolved networks.

[0142] The method for determining replication transmission resources provided in this embodiment of the invention can be applied to determining uplink (e.g., data transmission from a terminal device to a network device) replication transmission resources, and can also be applied to determining downlink (e.g., data transmission from a network device to a terminal device) replication transmission resources.

[0143] It should be noted that the method for determining copy transmission resources provided in this embodiment of the invention can be applied to various scenarios involving the determination of copy transmission resources. Exemplary examples may include the following:

[0144] Scenario 1: A copy transport resource has already been identified or indicated for the terminal device or network device. The copy transport resource is updated (e.g., the RLC entity is modified) by considering the LBT result. For example, the network device indicates an activated copy transport resource to the terminal device via a copy transport activation / deactivation MAC CE. Of course, prior to this, the network may have already configured the initial copy transport mode for the terminal device via a radio resource control (RRC) reconfiguration message.

[0145] Scenario 2: No copy transfer resource is determined or indicated for the terminal device or network device. The copy transfer resource is determined or indicated by considering the LBT result. For example, the network device indicates an active copy transfer resource to the terminal device by activating / deactivating the MAC control element (MAC CE) through copy transfer activation.

[0146] Scenario 3: An initial replication transport mode (which may include an active leg) is pre-configured only for the terminal device or network device. The replication transport resources are determined or indicated by considering the LBT result (this could be modifying the replication transport resources in the initial mode or re-determining or indicating the replication transport resources). For example, the network device configures the initial replication transport resources for the terminal device via an RRC reconfiguration message.

[0147] It should be understood that the above three specific scenarios are merely illustrative examples, and the method for determining copy transmission resources provided in this embodiment of the invention can also be applied to other scenarios involving the determination of copy transmission resources.

[0148] First, a method for determining the replication transmission resources used in uplink (e.g., when a terminal device transmits data to a network device) will be introduced.

[0149] The method for determining copy transmission resources provided in this embodiment of the invention is implemented through information interaction between a terminal device and a network device. Optionally, this method may specifically include two different implementation methods:

[0150] The first implementation method is to have the network device determine the resources for copying and transmitting; the second implementation method is to have the terminal device determine the resources for copying and transmitting.

[0151] The two implementation methods described above will be explained in detail below.

[0152] The first implementation method: The network device determines the resources for copy transmission.

[0153] like RB As shown, this embodiment of the invention provides a method for determining copy transmission resources, the method comprising:

[0154] 101. The network device determines the configuration information for copy transmission.

[0155] In this embodiment of the invention, the network device determining the configuration information for replicated transmission may include: the network device determining and configuring the corresponding radio bearer (RB), and configuring at least one replicated transmission path (equivalent to a leg, hereinafter referred to as leg) associated with each RB when using data replicated transmission. That is, the network device can configure RBs and the correspondence between RBs and legs, wherein one RB can correspond to at least one leg.

[0156] For example, assuming the network device is configured with 3 RBs, denoted as RB1, RB2 and RB3 respectively, then leg1 and leg2 can be configured for RB1, leg3, leg4, leg5 and leg6 can be configured for RB2, and leg7 and leg8 can be configured for RB3. The specific configuration information can be seen in the correspondence between RB and leg as shown in Table 1 below.

[0157] Leg RB1 leg1, leg2 RB2 leg3, leg4, leg5 and leg6 RB3 leg7 and leg8 Leg

[0158] Table 1

[0159] Table 1 provides an exemplary description using three sets of RB-leg correspondences as an example. It should be understood that in this embodiment of the invention, the network device can set at least one set of RB-leg correspondences, and the specific number can be set according to the actual situation. This embodiment of the invention does not limit the number of sets.

[0160] The network device can identify and configure the RB, and configure the corresponding leg, in two possible ways:

[0161] One possible implementation is that the network device can configure a corresponding replication transmission path for all RBs.

[0162] Another alternative implementation is that network devices can also configure replicated transmission paths for some RBs. Since some RBs may be used to carry dedicated data, in this case, corresponding replicated transmission paths can be configured for the other RBs besides those used to carry dedicated data.

[0163] Among them, the above-mentioned RB can be a data resource bearer (DRB) or a signal resource bearer (SRB).

[0164] Specifically, configuring the leg can be achieved by configuring the RLC entity or logical channel.

[0165] In this embodiment of the invention, the number of configurable RLC entities or logical channels can be at least one. Optionally, the total number of configurable RLC entities and logical channels can not exceed four.

[0166] It should be noted that, in this embodiment of the invention, the specific number of configured RCL entities and logical channels is not limited, but is determined according to the actual needs of data replication and transmission. This embodiment of the invention does not impose any limitations on this.

[0167] Furthermore, the network device may also determine the configuration information for the copy transmission by configuring at least one second carrier for each leg, that is, configuring the correspondence between the leg and the second carrier.

[0168] For example, referring to Table 1 above, we can specifically configure carrier A for leg1, carriers B and C for leg2, carriers D and E for leg3, carrier F for leg4, carrier G for leg5, carrier H for leg6, carrier I for leg7, and carrier J for leg8. This yields the following correspondence between leg and the second carrier, as shown in Table 2:

[0169] Second carrier leg1 Carrier A leg2 Carrier B and Carrier C leg3 Carrier D and Carrier E leg4 Carrier F leg5 Carrier G leg6 Carrier H leg7 Carrier I leg8 Carrier J Figure 2

[0170] Table 2

[0171] It should be noted that Table 2 above is only an exemplary illustration. Specifically, the number of second carriers configured when the network device determines the configuration information for copy transmission can be determined according to the actual situation, and this embodiment of the invention does not impose any limitations.

[0172] 102. The network device sends the fourth instruction information to the terminal device.

[0173] The fourth instruction information is used to indicate the configuration information for the copy transmission determined in 101 above.

[0174] In this embodiment of the invention, after step 101 above, the network device can first generate fourth indication information based on its determined copy transmission configuration information, and then send the fourth indication information to the network device.

[0175] The fourth indication information may include: the identifier of at least one RB, and the identifier of at least one copy transmission path corresponding to the identifier of each RB.

[0176] Furthermore, the fourth indication information may also include: the identifier of at least one second carrier corresponding to the identifier of each replicated transmission path.

[0177] Optionally, the network device can send the fourth indication information to the terminal device via dedicated information. This dedicated information can be an RRC reconfiguration message, MAC CE, etc. For example, the PDCP-config in the RRC reconfiguration message can be used to notify the aforementioned configuration information for the replication transmission.

[0178] 103. Configure the terminal device to copy the transmission path, and the correspondence between the copy transmission path and RB.

[0179] After receiving the fourth instruction information, the terminal device can configure the copy transmission path and the correspondence between the copy transmission path and the RB according to the copy transmission configuration information indicated in the fourth instruction information.

[0180] It should be noted that steps 101 to 103 above are optional. That is, the method for determining copy transmission resources provided in the embodiments of the present invention may also omit steps 101 to 103 above.

[0181] 104. The terminal equipment performs LBT detection on the target carrier in the unlicensed spectrum and obtains the LBT result of the target carrier.

[0182] Optionally, the aforementioned unlicensed spectrum can be the unlicensed spectrum in NR-U.

[0183] Optionally, the target carrier can be any of the following carriers.

[0184] The first type: The target carrier is any carrier in the unlicensed spectrum.

[0185] The first scenario described above can have two possibilities:

[0186] One possibility is that the target carrier is any carrier in the unlicensed spectrum supported by the terminal device.

[0187] Another possibility is that the target carrier is a carrier in the unlicensed spectrum supported by the terminal device that corresponds to all the RBs configured in the above-mentioned copy transmission configuration information. For example, according to Tables 1 and 2 above, RB1 corresponds to carriers A, B, and C; RB2 corresponds to carriers D, E, F, G, and H; and RB3 corresponds to carriers I and J. Therefore, carriers A, B, C, E, F, G, and H are the target carriers.

[0188] The second type: The target carrier is a carrier in at least one of the second carriers.

[0189] In other words, the target carrier is at least one of all the second carriers.

[0190] The third type: The target carrier is an active carrier in the unlicensed spectrum.

[0191] Optionally, the target carrier can be any active carrier among all carriers in the unlicensed spectrum supported by the terminal device. Here, an active carrier refers to a carrier whose corresponding RB is active.

[0192] Optionally, the target carrier is an active carrier in the unlicensed spectrum supported by the terminal device that corresponds to all RBs configured in the above-mentioned copy transmission configuration information.

[0193] The fourth type: The target carrier is at least one of the second carriers that is in an active state.

[0194] Optionally, in addition to the four types mentioned above, the following fifth and sixth cases may also be included. Since both the leg and the carrier have a correspondence with the RB (as shown in Tables 1 and 2 above), the carrier of at least one second carrier corresponding to a certain replicated RB can be used as the target carrier.

[0195] Fifth type: The target carrier is a carrier in at least the second carrier corresponding to a certain copy transmission RB.

[0196] The sixth type: The target carrier is at least one of the active carriers in the second carrier corresponding to a certain RB of a copy transmission.

[0197] 105. The terminal device sends the LBT result to the network device.

[0198] In the first optional case, the above LBT result includes at least one of the following: an indication of LBT success, or an indication of LBT failure.

[0199] In the second optional scenario, the LBT result mentioned above includes at least one of the following: channel occupied time (COT), carrier identifier, and bandwidth part (BWP) identifier.

[0200] It should be noted that in practical applications, the LBT result can combine all or some of the parameters included in the first optional case with all or some of the parameters included in the second optional case. Specifically, which parameters among the LBT success indication, LBT failure indication, COT, carrier identifier, and BWP identifier can be combined can be determined according to the actual situation, and will not be listed one by one in this embodiment of the invention.

[0201] Optionally, if the LBT result includes a carrier identifier and an indication of LBT success / failure, the carrier identifier can be the carrier identifier corresponding to the LBT success / failure indication. For example: Carrier 1 LBT successful.

[0202] Optionally, if the LBT result includes a BWP identifier and an indication of LBT success / failure, the BWP identifier can be the BWP identifier corresponding to the LBT success / failure indication. For example, BWP1 LBT successful.

[0203] Optionally, if there is a correspondence between RB and carrier, the carrier identifier or BWP identifier can be replaced by the RB identifier.

[0204] Optionally, the above COT includes at least two of the following:

[0205] The start time of channel occupancy, the end time of channel occupancy, and the duration of channel occupancy.

[0206] In other words, COT can be one of the following three cases: (1), (2), and (3):

[0207] (1) The start time and end time of channel occupancy.

[0208] (2) The start time of channel occupancy and the duration of channel occupancy.

[0209] (3) The end time of channel occupation and the duration of channel occupation.

[0210] 106. The network device determines the replication transmission resources based on the LBT results and the replication transmission configuration information.

[0211] The aforementioned replication and transfer resources may include at least one of the following:

[0212] The system includes at least one copy transmission path, a number of copies of the data transmitted (i.e., copies), and at least one first carrier. The first carrier is the target carrier whose LBT result is a successful LBT.

[0213] Optionally, the above determination of the replication transfer resources can satisfy the following two conditions:

[0214] Condition 1: The above-mentioned at least one copy transmission path can correspond to the above-mentioned at least one first carrier, wherein each copy transmission path corresponds to at least one first carrier.

[0215] Condition 2: At least one of the above-mentioned copy transfer paths can be selected from the copy transfer paths configured in 101 above.

[0216] In this embodiment of the invention, it is possible to determine which carriers have successfully undergone LBT (i.e., are in an idle state) based on the LBT results, and select a carrier (denoted as carrier 1) from these carriers that have successfully undergone LBT. Furthermore, it is possible to determine the leg and RB corresponding to carrier 1 by combining the correspondence between RB, leg and carrier in the configuration information of the copy transmission. Furthermore, it is possible to comprehensively determine the number of copies based on the limitation of the number of legs that can be used to transmit data and the requirements for data transmission reliability. In this way, the copy transmission resources can be determined based on the LBT results and the configuration information of the copy transmission.

[0217] For example, assuming the configuration information is as shown in Tables 1 and 2 above, the LBT results show that the successfully detected carriers from carrier A to carrier J are: carrier A, carrier B, carrier C, carrier D, carrier E, carrier F, carrier G, and carrier H. Therefore, when determining the copy transmission resources, carriers can be selected from carrier A, carrier B, carrier C, carrier D, carrier E, carrier F, carrier G, and carrier H, and the corresponding three transmission paths, leg1, leg2, and leg3, can be selected. Then, it can be further determined that the number of copies is less than or equal to 3.

[0218] It should be noted that if the above steps 101 to 103 are not performed in the method for determining copy transmission resources provided in the embodiments of the present invention, the above step 106 can be replaced by the following step 106a.

[0219] 106a. The network device determines the replication transmission resources based on the LBT results.

[0220] In the case of scenario 1 or scenario 3 above, the network device may have already configured the replication transmission resources for the terminal device. In this case, executing 106a can be to update the configured replication transmission resources based on the LBT result reported by the terminal device.

[0221] For example, suppose that the terminal device was previously configured with duplicate transmission resources: RLC entity 1 and RLC entity 2, where RLC entity 1 corresponds to carrier A and RLC entity 2 corresponds to carrier B. If the LBT result is that carrier A and carrier C are in an idle state and carrier B is in an occupied state, then the network device can determine the duplicate transmission resources as: RLC entity 1 and RLC entity 3 according to the LBT result, where RLC entity 1 corresponds to carrier A and RLC entity 3 corresponds to carrier C.

[0222] For example, in the case of scenario 1 or scenario 3 above, the network device may have already configured replication transmission resources for the terminal device. In this case, executing 106a can be combined with the LBT result reported by the terminal device to modify the configured replication transmission resources. For example, in the already activated legs, according to the LBT result, the legs whose LBT result does not meet the requirements (such as LBT failure) are deleted, and finally only the legs whose LBT is successful are used as the final replication transmission resources.

[0223] 107. The network device sends the first instruction information to the terminal device.

[0224] The first indication information is used to indicate the copy transmission resource, and the first indication information includes at least one of the following: at least one RB identifier, at least one identifier of the copy transmission path, the number of copies of data to be copied, at least one identifier of the first carrier, and an indication to activate / deactivate the copy transmission path.

[0225] Optionally, the identifier for each replicated transmission path may include at least one of the following: RLC entity identifier, logical channel identifier, and cell group identifier.

[0226] In DC scenarios, it is necessary to distinguish different cell groups. Some RLC entities or logical channels cannot be uniquely identified by RLC entity identifiers or logical channel identifiers. In this case, a certain RLC entity can be uniquely identified by cell group identifiers and RLC entity identifiers, and a certain logical channel can be uniquely identified by cell group identifiers and logical channel identifiers.

[0227] Furthermore, if a cell group includes only one RLC entity or one logical channel, the RLC entity or logical channel can be identified by a single cell group identifier.

[0228] Based on the characteristics of the DC scenario, for other scenarios besides the DC scenario (such as the CA scenario), the identifier of each replicated transmission path may include at least one of the RLC entity identifier and the logical channel identifier.

[0229] For DC scenarios, or DC+CA scenarios, the identifier for each replicated transmission path may include at least one of the following: RLC entity identifier, logical channel identifier, and cell group identifier.

[0230] Furthermore, for DC scenarios or DC+CA scenarios, the identifier for each replicated transmission path can include at least one of the following: RLC entity identifier and logical channel identifier. For example, different cell groups may have different identifiers, or a base station may only indicate the replicated transmission path under that base station.

[0231] Optionally, each first carrier may be identified as at least one of the following: carrier identifier and partial bandwidth BWP identifier.

[0232] 108. The terminal device determines the copy transmission resources based on the first instruction information.

[0233] Among them, the network device can identify the resource indicated by the first indication information as the copy transmission resource of the terminal device.

[0234] In this embodiment of the invention, the terminal device can send the LBT result to the network device, so that the network device can select a copy transmission resource for the terminal device based on the received LBT result and indicate the selected copy transmission resource to the terminal device. Through this scheme, the terminal device can determine one or more data transmission paths for a carrier with a successful LBT, thus enabling the transmission of multiple copies of data through multiple transmission paths when using unlicensed spectrum for data transmission.

[0235] Furthermore, due to the unique characteristics of NR-U, data can only be transmitted on the corresponding carrier when LBT is successful. Therefore, the above method for determining duplicate transmission resources flexibly determines duplicate transmission resources based on the LBT result, ensuring the reliability requirements of resource transmission and improving the data transmission performance of the NR-U system and the transmission performance of the terminal equipment.

[0236] Optional, combined Figure 3 ,like Figure 3 As shown, after step 108 above, the method for determining the copy transmission path provided in this embodiment of the invention may further include steps 109 and 110 below.

[0237] 109. The terminal device activates at least one target copy transmission path in the copy transmission path, and / or activates at least one first target carrier in the first carrier.

[0238] 110. The terminal device activates the time-frequency resources corresponding to the target copy transmission path, and / or activates the time-frequency resources corresponding to the first target carrier.

[0239] The aforementioned time-frequency resources can be uplink transmission time-frequency resources, for example, they can be time-frequency resources with configuration grant (CG) or dynamic grant (DG).

[0240] In this embodiment of the invention, when performing data copying and transmission, uplink data can be sent on the activated time-frequency resources.

[0241] Optional, combined Figure 4 ,like Figure 4 As shown, after 107 and before 109 above, the method for determining the copy transmission path provided in this embodiment of the invention may further include:

[0242] 111. The network device sends a third instruction message to the terminal device.

[0243] The third indication information is used to indicate the activation of the target copy transmission path and / or to indicate the activation of the first target carrier.

[0244] Optionally, after step 109 and before step 110, the terminal device may send the activated target replication transmission path and the activated first target carrier information to the network device, and the network device may instruct the terminal device to activate the time-frequency resources corresponding to the target replication transmission path and / or activate the time-frequency resources corresponding to the first target carrier through indication information.

[0245] Optional, combined Figure 5 ,like Figure 5 As shown, before 104 above, it may also include:

[0246] 112. The network device sends the fifth instruction information to the terminal device.

[0247] The fifth indication information is used to indicate the initial mode of the copy transmission. The network device may also send this fifth indication information along with the aforementioned fourth indication information in the same message to the terminal device.

[0248] In this embodiment of the invention, when indicating the initial mode of replication transmission, the active replication transmission path can be indicated (i.e., the active RLC entity or logical channel).

[0249] Optionally, the fifth piece of information may also indicate other copy transmission resources used for copy transmission. This embodiment of the invention is not limited and can be set according to actual conditions.

[0250] Accordingly, after receiving the fifth instruction information, the terminal device can obtain the initial replication transmission resources (e.g., activate the RLC entity used) from the fifth instruction information, thereby activating the corresponding RLC entity and performing data replication transmission through these RLC entities.

[0251] Optional, combined Figure 6 ,like Figure 7 As shown, after the above 108, it may also include:

[0252] 113. The network device sends the sixth instruction information to the terminal device.

[0253] The sixth instruction information is used to instruct on updating and copying transmission resources.

[0254] In this embodiment of the invention, the network device can re-determine the copy transmission resources for the terminal device based on the carrier occupancy at different times, and instruct the terminal device to update the copy transmission resources through indication information.

[0255] Optionally, the network device may send the sixth indication information to the terminal device via MAC CE, which may indicate the information of the changed leg (e.g., RLC entity identifier, or logical channel identifier).

[0256] Optionally, the network device can also send an instruction message to the terminal device to report the LBT result before executing step 113 above. That is, at this time, the replication transmission resources that need to be updated can be determined based on the LBT result reported by the terminal device in real time.

[0257] The second implementation method: The terminal device determines the resources for copying and transmitting.

[0258] like Figure 7 As shown, a method for determining copy transfer resources is provided, the method comprising:

[0259] 201. The network device determines the configuration information for copy transmission.

[0260] 202. The network device sends the fourth instruction information to the terminal device.

[0261] 203. Configure the terminal device to copy the transmission path, and the correspondence between the copy transmission path and RB.

[0262] 204. The terminal equipment performs LBT detection on the target carrier in the unlicensed spectrum and obtains the LBT result of the target carrier.

[0263] The descriptions of 201 to 204 above can be referred to the descriptions of 101 to 104 in the first embodiment above, and will not be repeated here.

[0264] 205. The terminal device determines the copy transmission resources based on the LBT result and the copy transmission configuration information indicated in the fourth indication information.

[0265] Terminal devices can determine the replication transmission resources themselves based on the LBT results obtained from the detection and the replication transmission configuration information indicated by the network device.

[0266] The description of the copy transmission resources determined by the terminal device in section 205 can be referred to the description of the copy transmission resources determined in section 106 above, and will not be repeated here.

[0267] In this embodiment of the invention, the terminal device can perform LBT detection on a carrier in the unlicensed spectrum to obtain the LBT result. Then, the terminal device can select resources for copy transmission based on the LBT result. Through this scheme, one or more data transmission paths can be determined for carriers with successful LBT in the unlicensed spectrum. Thus, when transmitting data using the unlicensed spectrum, multiple copies of data can be transmitted through multiple transmission paths.

[0268] The above Figure 2 The method shown is compared to Figure 7 The method shown provides flexibility to terminal devices and reduces the latency caused by network devices determining the copying and transmission resources.

[0269] Optional, combined Figure 8 ,like Figure 8 As shown, after 205 above, 206 below may also be included.

[0270] 206. The terminal device sends the LBT result and information on the copied transmission resources to the network device.

[0271] Optionally, 206 above can be replaced with 206a or 206b below.

[0272] 206a. The terminal device sends information about copying and transmitting resources to the network device.

[0273] In this embodiment of the invention, the terminal device sends information about the copied transmission resources to the network device, which enables the network device to know the copied transmission resources determined by the terminal device.

[0274] Optionally, the terminal device sends the LBT result and information about the replicated transmission resources to the network device. This allows the network device to know the replicated transmission resources determined by the terminal device, and also allows the network device to re-instruct the replicated transmission resources for the terminal device based on the LBT result after knowing the replicated transmission resources determined by the terminal device.

[0275] 206b. The terminal device sends the LBT result to the network device.

[0276] In this embodiment of the invention, the terminal device only sends the LBT result to the network device, which enables the network device to know the LBT result and implicitly determine the copy transmission resource finally determined by the terminal device.

[0277] Optional, combined Figure 9 ,like Figure 9 As shown, prior to step 205 above, the method for determining copy transmission resources provided in this embodiment of the invention may further include:

[0278] 207. The network device sends a second instruction message to the terminal device.

[0279] The second instruction information is used to instruct the terminal device to determine the copy transmission resources.

[0280] After receiving the second instruction information, the terminal device can know that the network device allows the terminal device to determine the copy transmission resources itself. At this time, the terminal device can continue to execute the above 205.

[0281] like Figure 9 As shown in the figure, after step 205 above, the method for determining copy transmission resources provided in this embodiment of the invention may further include:

[0282] 208. The network device sends a third instruction message to the terminal device.

[0283] 209. The terminal device activates at least one target copy transmission path in the copy transmission path, and / or activates at least one first target carrier in the first carrier.

[0284] 210. The terminal device activates the time-frequency resources corresponding to the target copy transmission path, and / or activates the time-frequency resources corresponding to the first target carrier.

[0285] The descriptions of 208 to 210 above can be referred to the descriptions of 111, 109 and 110 above, and will not be repeated here.

[0286] Optional, combined Figure 10 ,like Figure 10 As shown, before section 204 above, it may also include:

[0287] 211. The network device sends the fifth instruction information to the terminal device.

[0288] The description of 211 above can be referred to the description of 112 above, and will not be repeated here.

[0289] Optional, combined Figure 11 ,like Figure 12 As shown, after 205 above, it may also include:

[0290] 212. The network device sends the sixth instruction information to the terminal device.

[0291] The description of 212 above can be referred to the description of 113 above, and will not be repeated here.

[0292] Optionally, after the terminal device has determined the copy transmission resources, the terminal device can use the determined copy transmission resources to transmit data to the network device.

[0293] Optionally, the network device can also send an instruction message to the terminal device to report the LBT results, and then execute 212 above. That is, at this time, the replication transmission resources that need to be updated can be determined based on the LBT results reported by the terminal device in real time.

[0294] In this embodiment of the invention, in addition to determining the aforementioned copy transmission resources, the terminal device can also determine the aforementioned copy configuration information and the initial copy transmission mode for itself.

[0295] After the terminal device has determined the copy transmission resources, it can transmit data according to the determined copy transmission resources.

[0296] The following sections will explain the copying and transmission methods for both DC and CA scenarios.

[0297] 1. DC Scene

[0298] The protocol architecture of the replication transport in a DC scenario is as follows: Figure 12 As shown in DRB ID 2, the PDCP entity in the terminal device is associated with two different RLC entities. These two associated RLC entities are associated with different MAC entities. One MAC entity corresponds to the Master Cell Group (MCG), and the other corresponds to the Secondary Cell Group (SCG). For uplink and downlink, PDCP copies the PDCP PDU (Protocol Data Unit) into two identical copies. The two PDCPs are transmitted through the RLC entities of different CGs to the MAC entities, then through the air interface to the corresponding MAC entity of the base station (uplink). Then, they are transmitted through the MAC entity to the corresponding RLC entity, and finally converged back to the PDCP. When the PDCP layer detects that the two PDCP PDUs are identical copies (for example, by using the fact that the two PDCP PDUs have the same SN to determine that they are identical copies), it can discard one of them and deliver the other to the higher layer. (It should be noted that the copied PDCP PDUs do not necessarily arrive at the PDCP layer at the same time.)

[0299] 2. CA scenario

[0300] The protocol architecture for replication and transmission in a CA scenario is as follows: Figure 13 As shown in DRB ID 1 or DRB ID 3. A PDCP entity in a terminal device is associated with two different RLC entities, and these two different RLC entities are associated with the same MAC entity. For uplink and downlink, the PDCP PDU is copied into two identical copies. The two PDCPs are transmitted through different RLC entities to the same MAC entity, then through the air interface to the corresponding MAC and RLC entities at the base station (uplink), and finally converged back to the PDCP. When the PDCP layer detects that two PDCP PDUs are identical copies (for example, by using the same SN to determine if they are identical copies), it can discard one and submit the other to a higher layer (note that copied PDCP PDUs do not necessarily arrive at the PDCP layer simultaneously).

[0301] In this embodiment of the invention, the method for determining replica transmission resources for downlink (e.g., data transmission from a network device to a terminal device) is similar to the method for determining uplink replica transmission resources described above. The network device can perform LBT (Low-Level Transmission) sensing on the carrier and determine the replica transmission resources used for replica transmission based on the obtained LBT results.

[0302] The method by which the network device determines the downlink replication transmission resources based on the LBT result is similar to the method by which the terminal device or network device determines the uplink replication transmission resources based on the LBT result in the above method embodiment, and will not be described again in this embodiment.

[0303] like Figure 14 As shown, an embodiment of the present invention provides a terminal device, including:

[0304] The processing module 301 is used to perform LBT detection on the target carrier in the unlicensed spectrum to obtain the LBT result of the target carrier; and to determine the duplicate transmission resources based on the LBT result.

[0305] Optionally, the LBT result includes at least one of the following: an indication of LBT success or an indication of LBT failure.

[0306] Optionally, the LBT result includes at least one of the following: channel occupancy time, carrier identifier, and BWP identifier.

[0307] Optionally, the channel occupancy time includes at least two of the following:

[0308] The start time of channel occupancy, the end time of channel occupancy, and the duration of channel occupancy.

[0309] Optionally, the copy transfer resource includes at least one of the following:

[0310] At least one copy transmission path, the number of copies of data to be transmitted, and at least one first carrier; wherein the first carrier is the carrier in the target carrier whose LBT result is successful.

[0311] Optionally, the processing module 301 is specifically configured to send the LBT result to the network device; receive first indication information sent by the network device, the first indication information being obtained based on the LBT result, the first indication information being used to indicate the duplicate transmission resource, the first indication information including at least one of the following: at least one radio bearer (RB) identifier, at least one identifier of the duplicate transmission path, the number of data copies to be duplicated, at least one identifier of the first carrier, and an indication to activate / deactivate the duplicate transmission path; and determine the duplicate transmission resource based on the first indication information.

[0312] Optionally, the identifier for each replicated transmission path may include at least one of the following: Radio Link Control (RLC) entity identifier, logical channel identifier, and cell group identifier.

[0313] Optionally, each first carrier may be identified as at least one of the following: carrier identifier and BWP identifier.

[0314] Optionally, the terminal device further includes:

[0315] The sending module 302 is used to send the LBT result and / or the information of the replicated transmission resources to the network device.

[0316] Optionally, the terminal device further includes:

[0317] The receiving module 303 is configured to receive second indication information sent by the network device before the processing module determines the copy transmission resource based on the LBT result. The second indication information is used to instruct the terminal device to determine the copy transmission resource.

[0318] Optionally, the processing module 301 is further configured to activate the target copy transmission path in the at least one copy transmission path, and / or activate the first target carrier in the at least one first carrier.

[0319] Optionally, the processing module 301 is further configured to activate the time-frequency resources corresponding to the target replication transmission path, and / or to activate the time-frequency resources corresponding to the first target carrier.

[0320] Optionally, the terminal device further includes:

[0321] The receiving module 303 is used to receive third indication information sent by the terminal device, the third indication information being used to indicate activation of the target copy transmission path, and / or to indicate activation of the first target carrier.

[0322] Optionally, the terminal device further includes:

[0323] The receiving module 303 is used to receive the fourth indication information sent by the network device. The fourth indication information is used to indicate the configuration information of the copy transmission. The fourth indication information includes: the identifier of at least one RB, and the identifier of at least one copy transmission path corresponding to the identifier of each RB.

[0324] The processing module 301 is also used to configure the copy transmission path and configure the correspondence between the copy transmission path and the RB.

[0325] Optionally, the fourth indication information may further include: the identifier of at least one second carrier corresponding to the identifier of each replicated transmission path.

[0326] Optionally, the processing module 301 is specifically used to determine the copy transmission resource based on the LBT result and the copy transmission configuration information indicated in the fourth indication information.

[0327] Optionally, the target carrier is all carriers in the unlicensed spectrum;

[0328] or,

[0329] The target carrier is one of the at least one second carrier;

[0330] or,

[0331] The target carrier is a carrier that is active in the unlicensed spectrum;

[0332] or,

[0333] The target carrier is the carrier that is active among the at least one second carrier.

[0334] Optionally, the terminal device further includes:

[0335] The receiving module 303 is used to receive the fifth indication information sent by the network device, the fifth indication information being used to indicate the initial mode of the copy transmission.

[0336] Optionally, the processing module 301 is further configured to use the copy transmission resources to transmit data to the network device.

[0337] Optionally, the terminal device further includes:

[0338] The receiving module 303 is used to receive the sixth indication information sent by the network device, the sixth indication information being used to indicate the updating of the copy transmission resources.

[0339] like Figure 15 As shown, an embodiment of the present invention provides a network device, including:

[0340] The receiving module 401 is used to receive the LBT result sent by the terminal device, wherein the LBT result is obtained by performing LBT detection on the target carrier in the unlicensed spectrum;

[0341] Processing module 402 is used to determine the copy transmission resources based on the LBT result.

[0342] Optionally, the LBT result includes at least one of the following: an indication of LBT success or an indication of LBT failure.

[0343] Optionally, the LBT result includes at least one of the following: channel occupancy time, carrier identifier, and BWP identifier.

[0344] Optionally, the channel occupancy time includes at least two of the following:

[0345] The start time of channel occupancy, the end time of channel occupancy, and the duration of channel occupancy.

[0346] Optionally, the copy transfer resource includes at least one of the following:

[0347] At least one copy transmission path, the number of copies of data to be transmitted, and at least one first carrier; wherein the first carrier is the carrier in the target carrier whose LBT result is successful.

[0348] Optionally, the network device further includes:

[0349] The sending module 403 is used to send first indication information to the terminal device. The first indication information is used to indicate the copy transmission resource. The first indication information includes at least one of the following: at least one RB identifier, at least one identifier of the copy transmission path, the number of data copies to be copied, at least one identifier of the first carrier, and an indication to activate / deactivate the copy transmission path.

[0350] Optionally, the identifier for each replicated transmission path may include at least one of the following: RLC entity identifier, logical channel identifier, and cell group identifier.

[0351] Optionally, each first carrier may be identified as at least one of the following: carrier identifier and BWP identifier.

[0352] Optionally, the receiving module 401 is further configured to receive the LBT result and / or the information of the copy transmission resource sent by the terminal device.

[0353] Optionally, the network device further includes:

[0354] The sending module 403 is used to send a second indication information to the terminal device, the second indication information being used to instruct the terminal device to determine the copy transmission resource.

[0355] Optionally, the network device further includes:

[0356] The sending module 403 is used to send third indication information to the terminal device, the third indication information being used to indicate activation of the target copy transmission path, and / or to indicate activation of the first target carrier.

[0357] Optionally, the processing module 401 is further configured to determine configuration information for copy transmission;

[0358] The terminal device also includes:

[0359] The sending module 403 is used to send the fourth indication information to the terminal device. The fourth indication information is used to indicate the configuration information of the copy transmission. The fourth indication information includes: the identifier of at least one RB, and the identifier of at least one copy transmission path corresponding to the identifier of each RB.

[0360] Optionally, the fourth indication information may further include: the identifier of at least one second carrier corresponding to the identifier of each replicated transmission path.

[0361] Optionally, the processing module 402 is specifically used to determine the replication transmission resources based on the LBT result and the replication transmission configuration information.

[0362] Optionally, the target carrier is all carriers in the unlicensed spectrum;

[0363] or,

[0364] The target carrier is one of the at least one second carrier;

[0365] or,

[0366] The target carrier is a carrier that is active in the unlicensed spectrum;

[0367] or,

[0368] The target carrier is the carrier that is active among the at least one second carrier.

[0369] Optionally, the network device further includes:

[0370] The sending module 403 is used to send fifth indication information to the terminal device, the fifth indication information being used to indicate the initial mode of copy transmission.

[0371] Optionally, the network device further includes:

[0372] The sending module 403 is used to send a sixth indication information to the terminal device, the sixth indication information being used to indicate the updating of the copy transmission resources.

[0373] The terminal device in this embodiment of the invention can be a mobile phone, for example, as described below. Figure 15 A detailed explanation of each component of the mobile phone is provided.

[0374] like Figure 11 As shown, a mobile phone may include components such as a radio frequency (RF) circuit 1110, a memory 1120, an input unit 1130, a display unit 1140, a sensor 1150, an audio circuit 1160, a wireless fidelity (WiFi) module 1170, a processor 1180, and a power supply 1190. The RF circuit 1110 includes a receiver 1111 and a transmitter 1112. Those skilled in the art will understand that... Figure 11 The mobile phone structure shown does not constitute a limitation on the mobile phone and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0375] RF circuit 1110 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink information from the base station and processes it with processor 1180; additionally, it transmits uplink data to the base station. Typically, RF circuit 1110 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier (LNA), a duplexer, etc. Furthermore, RF circuit 1110 can also communicate wirelessly with networks and other devices. The aforementioned wireless communication can use any communication standard or protocol, including but not limited to Global System for Mobile Communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Message Service (SMS), etc.

[0376] The memory 1120 can be used to store software programs and modules. The processor 1180 executes various functions and data processing of the mobile phone by running the software programs and modules stored in the memory 1120. The memory 1120 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, applications required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, phonebook, etc.). In addition, the memory 1120 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0377] The input unit 1130 can be used to receive input numerical or character information, and to generate key signal inputs related to user settings and function control of the mobile phone. Specifically, the input unit 1130 may include a touch panel 1131 and other input devices 1132. The touch panel 1131, also known as a touch screen, can collect touch operations performed by the user on or near it (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near the touch panel 1131), and drive the corresponding connection devices according to a pre-set program. Optionally, the touch panel 1131 may include two parts: a touch detection device and a touch controller. The touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, sends it to the processor 1180, and can receive and execute commands sent by the processor 1180. In addition, the touch panel 1131 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1131, the input unit 1130 may also include other input devices 1132. Specifically, other input devices 1132 may include, but are not limited to, one or more of the following: physical keyboard, function keys (such as volume control buttons, power buttons, etc.), trackball, mouse, joystick, etc.

[0378] Display unit 1140 can be used to display information input by the user or information provided to the user, as well as various menus of the mobile phone. Display unit 1140 may include display panel 1141, optionally configured as a liquid crystal display (LCD), organic light-emitting diode (OLED), or similar form. Further, touch panel 1131 may cover display panel 1141. When touch panel 1131 detects a touch operation on or near it, it transmits the information to processor 1180 to determine the type of touch event. Subsequently, processor 1180 provides corresponding visual output on display panel 1141 based on the type of touch event. Although in Figure 15 In this embodiment, the touch panel 1131 and the display panel 1141 are two separate components to realize the input and output functions of the mobile phone. However, in some embodiments, the touch panel 1131 and the display panel 1141 can be integrated to realize the input and output functions of the mobile phone.

[0379] The mobile phone may also include at least one sensor 1150, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 1141 according to the ambient light level, and the proximity sensor can turn off the display panel 1141 and / or the backlight when the phone is moved to the ear. As a type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes). When stationary, it can detect the magnitude and direction of gravity and can be used for applications that recognize the phone's posture (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition-related functions (such as pedometer, taps), etc. Other sensors that may be configured in the mobile phone, such as gyroscopes, barometers, hygrometers, thermometers, and infrared sensors, will not be described in detail here.

[0380] Audio circuit 1160, speaker 1161, and microphone 1162 provide an audio interface between the user and the mobile phone. Audio circuit 1160 converts received audio data into electrical signals and transmits them to speaker 1161, where speaker 1161 converts them into sound signals for output. On the other hand, microphone 1162 converts collected sound signals into electrical signals, which are received by audio circuit 1160, converted into audio data, and then processed by processor 1180 before being transmitted via RF circuit 1110 to, for example, another mobile phone, or the audio data can be output to memory 1120 for further processing.

[0381] WiFi is a short-range wireless transmission technology. Through the WiFi module 1170, mobile phones can help users send and receive emails, browse web pages, and access streaming media, providing users with wireless broadband internet access. Although Figure 16 WiFi module 1170 is shown, but it is understood that it is not an essential component of a mobile phone and can be omitted as needed without changing the essence of the invention.

[0382] The processor 1180 is the control center of the mobile phone, connecting various parts of the phone through various interfaces and lines. It executes software programs and / or modules stored in the memory 1120, and calls data stored in the memory 1120 to perform various functions and process data, thereby providing overall monitoring of the phone. Optionally, the processor 1180 may include one or more processing units; preferably, the processor 1180 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications, and the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 1180.

[0383] The mobile phone also includes a power supply 1190 (such as a battery) that supplies power to various components. Preferably, the power supply can be logically connected to the processor 1180 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. Although not shown, the mobile phone may also include a camera, Bluetooth module, etc., which will not be described in detail here.

[0384] In this embodiment of the invention, the processor 1180 is used to perform LBT detection on a target carrier in an unlicensed spectrum to obtain the LBT result of the target carrier; and to determine the duplicate transmission resources based on the LBT result.

[0385] Optionally, the LBT result may include at least one of the following: an indication of LBT success or an indication of LBT failure.

[0386] Optionally, the LBT result may include at least one of the following: channel occupancy time, carrier identifier, and BWP identifier.

[0387] Optionally, the channel occupancy time includes at least two of the following:

[0388] The start time of channel occupancy, the end time of channel occupancy, and the duration of channel occupancy.

[0389] Optionally, the copied transfer resources include at least one of the following:

[0390] At least one copy transmission path, the number of copies of data to be transmitted, and at least one first carrier; wherein the first carrier is a carrier in the target carrier whose LBT result is successful.

[0391] Optionally, the processor 1180 is specifically configured to send LBT results to the network device; receive first indication information sent by the network device, the first indication information being obtained based on the LBT results, the first indication information being used to indicate duplicate transmission resources, the first indication information including at least one of the following: at least one radio bearer (RB) identifier, at least one identifier of a duplicate transmission path, the number of duplicate transmission data copies, at least one identifier of a first carrier, and an indication to activate / deactivate the duplicate transmission path; and determine duplicate transmission resources based on the first indication information.

[0392] Optionally, the identifier for each replicated transmission path may include at least one of the following: Radio Link Control (RLC) entity identifier, logical channel identifier, and cell group identifier.

[0393] Optionally, each first carrier may be identified as at least one of the following: carrier identifier and BWP identifier.

[0394] Optionally, the terminal device may also include:

[0395] Transmitter 1112 is used to send LBT results and / or copy transmission resource information to network devices.

[0396] Optionally, the terminal device may also include:

[0397] Receiver 1111 is configured to receive second indication information sent by the network device before the processor determines the copy transmission resource based on the LBT result. The second indication information is used to instruct the terminal device to determine the copy transmission resource.

[0398] Optionally, the processor 1180 is also configured to activate a target replica transmission path in at least one replica transmission path, and / or activate a first target carrier in at least one first carrier.

[0399] Optionally, the processor 1180 is also used to activate the time-frequency resources corresponding to the target copy transmission path;

[0400] And / or,

[0401] Activate the time-frequency resources corresponding to the first target carrier.

[0402] Optionally, the terminal device may also include:

[0403] Receiver 1111 is used to receive third indication information sent by terminal equipment, the third indication information being used to indicate activation of target copy transmission path, and / or, and to indicate activation of first target carrier.

[0404] Optionally, the terminal device may also include:

[0405] Receiver 1111 is used to receive fourth indication information sent by network device. The fourth indication information is used to indicate configuration information for copy transmission. The fourth indication information includes: an identifier of at least one RB, and an identifier of at least one copy transmission path corresponding to the identifier of each RB.

[0406] The processor 1180 is also used to configure the copy transfer path and the correspondence between the copy transfer path and the RB.

[0407] Optionally, the fourth indication information may also include: the identifier of at least one second carrier corresponding to the identifier of each replicated transmission path.

[0408] Optionally, the processor 1180 is specifically configured to determine the replication transfer resources based on the LBT results and the replication transfer configuration information indicated in the fourth indication information.

[0409] Optionally, the target carrier is all carriers in the unlicensed spectrum;

[0410] or,

[0411] The target carrier is at least one of the carriers in the second carrier.

[0412] or,

[0413] The target carrier is an active carrier in the unlicensed spectrum;

[0414] or,

[0415] The target carrier is at least one of the second carriers that is in an active state.

[0416] Optionally, the terminal device may also include:

[0417] Receiver 1111, the receiver is used to receive the fifth indication information sent by the network device, the fifth indication information is used to indicate the initial mode of the copy transmission.

[0418] Optionally, the processor 1180 is also used to transmit data to network devices using replicated transmission resources.

[0419] Optionally, the terminal device may also include:

[0420] Receiver 1111 is used to receive the sixth indication information sent by the network device. The sixth indication information is used to indicate the update of the copy transmission resources.

[0421] The network device in this embodiment of the invention can be a base station, such as... ​ As shown, the base station includes:

[0422] Receiver 2101 is used to receive LBT results sent by terminal equipment. The LBT results are obtained by performing LBT detection on a target carrier in the unlicensed spectrum.

[0423] Processor 2102 is used to determine the replication transfer resources based on the LBT results.

[0424] Optionally, the LBT result may include at least one of the following: an indication of LBT success or an indication of LBT failure.

[0425] Optionally, the LBT result may include at least one of the following: channel occupancy time, carrier identifier, and BWP identifier.

[0426] Optionally, the channel occupancy time includes at least two of the following:

[0427] The start time of channel occupancy, the end time of channel occupancy, and the duration of channel occupancy.

[0428] Optionally, the copied transfer resources include at least one of the following:

[0429] At least one copy transmission path, the number of copies of data to be transmitted, and at least one first carrier; wherein the first carrier is a carrier in the target carrier whose LBT result is successful.

[0430] Optionally, network equipment may also include:

[0431] Transmitter 2103 is used to send first indication information to terminal equipment. The first indication information is used to indicate the copy transmission resource. The first indication information includes at least one of the following: at least one RB identifier, at least one identifier of the copy transmission path, the number of data copies to be copied, at least one identifier of the first carrier, and an indication to activate / deactivate the copy transmission path.

[0432] Optionally, the identifier for each replicated transmission path may include at least one of the following: RLC entity identifier, logical channel identifier, and cell group identifier.

[0433] Optionally, each first carrier may be identified as at least one of the following: carrier identifier and BWP identifier.

[0434] Optionally, receiver 2101 is also used to receive LBT results and / or information on copied transmission resources sent by the terminal device.

[0435] Optionally, network equipment may also include:

[0436] The transmitter 2103 is used to send a second indication information to the terminal device, the second indication information being used to instruct the terminal device to determine the copy transmission resources.

[0437] Optionally, network equipment may also include:

[0438] Transmitter 2103 is used to send third indication information to terminal equipment, the third indication information being used to indicate activation of target copy transmission path, and / or to indicate activation of first target carrier.

[0439] Optionally, the processor 2102 is also used to determine configuration information for the copy transfer;

[0440] Terminal equipment also includes:

[0441] The transmitter 2103 is used to send fourth indication information to the terminal device. The fourth indication information is used to indicate the configuration information of the copy transmission. The fourth indication information includes: the identifier of at least one RB, and the identifier of at least one copy transmission path corresponding to the identifier of each RB.

[0442] Optionally, the fourth indication information may also include: the identifier of at least one second carrier corresponding to the identifier of each replicated transmission path.

[0443] Optionally, processor 2102 is specifically used to determine replication transfer resources based on LBT results and replication transfer configuration information.

[0444] Optionally, the target carrier is all carriers in the unlicensed spectrum;

[0445] or,

[0446] The target carrier is at least one of the carriers in the second carrier.

[0447] or,

[0448] The target carrier is an active carrier in the unlicensed spectrum;

[0449] or,

[0450] The target carrier is at least one of the second carriers that is in an active state.

[0451] Optionally, network equipment may also include:

[0452] Transmitter 2103 is used to send fifth indication information to terminal equipment, the fifth indication information being used to indicate the initial mode of copy transmission.

[0453] Optionally, network equipment may also include:

[0454] The transmitter 2103 is used to send a sixth indication message to the terminal device, which is used to indicate the update of the copy transmission resources.

[0455] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of the present invention is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., a solid-state disk (SSD)).

[0456] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

Claims

1. A method for determining a duplicated transmission resource, comprising: performing a listen before transmit, LBT, detection on a target carrier in an unlicensed spectrum to obtain an LBT result of the target carrier; determining a duplicated transmission resource according to the LBT result, wherein the determining the duplicated transmission resource according to the LBT result comprises: sending the LBT result to a network device; receiving first indication information sent by the network device, the first indication information being obtained according to the LBT result, the first indication information being used to indicate the duplicated transmission resource, the first indication information comprising at least one of the following: at least one radio bearer, RB, identifier, at least one duplicated transmission path identifier, a duplicated transmission data quantity, at least one first carrier identifier, and an indication of activating / deactivating a duplicated transmission path; and determining the duplicated transmission resource according to the first indication information.

2. The method of claim 1, wherein: the LBT result comprises at least one of the following: an LBT success indication and an LBT failure indication; the LBT result comprises at least one of the following: a channel occupancy time, a carrier identifier, and a bandwidth part, BWP, identifier; the channel occupancy time comprises at least two of the following: a channel occupancy start time, a channel occupancy end time, and a channel occupancy duration; the duplicated transmission resource comprises at least one of the following: at least one duplicated transmission path, a duplicated transmission data quantity, and at least one first carrier; wherein the first carrier is a carrier in the target carrier for which the LBT result is LBT success; each duplicated transmission path identifier comprises at least one of the following: a radio link control, RLC, entity identifier, a logical channel identifier, and a cell group identifier; and each first carrier identifier comprises at least one of the following: a carrier identifier and a BWP identifier; and after the determining the duplicated transmission resource according to the LBT result, the method further comprises: activating a target duplicated transmission path in the at least one duplicated transmission path, and / or activating a first target carrier in the at least one first carrier; and / or activating a time-frequency resource corresponding to the target duplicated transmission path; and / or activating a time-frequency resource corresponding to the first target carrier. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 3. The method of claim 1, wherein, ​ 4. The method of claim 3, wherein, ​ ​ 5. The method of claim 1, wherein, ​ ​ 6. The method of claim 5, wherein, ​ 7. The method of claim 4, wherein, ​ 8. The method of claim 5, wherein, ​ ​ 9. The method of claim 8, wherein, ​ ​ ​ ​ 10. The method of claim 9, wherein, ​ receive third indication information sent by the terminal device, the third indication information being used to indicate that the target copy transmission path is activated and / or the first target carrier is activated.

11. The method of claim 1, wherein, The fourth indication information further comprises: the identification of each copy transmission path corresponding to the identification of at least one second carrier.

12. The method of claim 1, wherein, The method further comprises: determining the copy transmission resource according to the LBT result and the configuration information of copy transmission indicated in the fourth indication information.

13. The method of claim 11, wherein, the target carrier is all carriers in the unlicensed spectrum; or, the target carrier is a carrier in the at least one second carrier; or, the target carrier is a carrier in the unlicensed spectrum in an activated state; or, the target carrier is a carrier in the at least one second carrier in an activated state.

14. The method according to any one of claims 1 to 13, characterized in that, Before the LBT detection on the target carrier in the unlicensed spectrum to obtain the LBT result of the target carrier, the method further comprises: receiving fifth indication information sent by the network device, the fifth indication information being used to indicate an initial mode of copy transmission.

15. The method according to any one of claims 1 to 13, characterized in that, After the determination of the copy transmission resource according to the LBT result, the method further comprises: transmitting data to the network device by using the copy transmission resource.

16. The method according to any one of claims 1 to 13, characterized in that, After the acquisition of the copy transmission resource according to the LBT result, the method further comprises: receiving sixth indication information sent by the network device, the sixth indication information being used to indicate an update of the copy transmission resource.

17. A method of determining a duplicated transmission resource, characterized by, comprises: receiving an LBT result sent by a terminal device, the LBT result being obtained by performing LBT detection on a target carrier in an unlicensed spectrum; determining a copy transmission resource according to the LBT result, wherein, after the determination of the copy transmission resource according to the LBT result, the method further comprises: sending first indication information to the terminal device, the first indication information being used to indicate the copy transmission resource, the first indication information comprising at least one of the following: at least one RB identification, at least one copy transmission path identification, copy transmission data share, at least one first carrier identification, and copy transmission path activation / deactivation indication, wherein, before the reception of the LBT result sent by the terminal device, the method further comprises: determining configuration information of copy transmission; sending fourth indication information to the terminal device, the fourth indication information being used to indicate the configuration information of copy transmission, the fourth indication information comprising: at least one RB identification, and at least one copy transmission path identification corresponding to the identification of each RB.

18. The method of claim 17, wherein, The LBT result comprises at least one of the following: LBT success indication and LBT failure indication.

19. The method of claim 17, wherein, The LBT result comprises at least one of the following: channel occupancy time, carrier identification and BWP identification.

20. The method of claim 19, wherein, The channel occupancy time comprises at least two of the following: channel occupancy start time, channel occupancy end time and channel occupancy duration.

21. The method of claim 17, wherein, The copy transmission resource comprises at least one of the following: at least one copy transmission path, a copy transmission data share, and at least one first carrier; wherein the first carrier is a carrier in the target carrier with an LBT result of LBT success.

22. The method of claim 17, wherein, The identification of each copy transmission path includes at least one of the following: an RLC entity identification, a logical channel identification, and a cell group identification.

23. The method of claim 17, wherein, The identification of each first carrier is at least one of the following: a carrier identification and a partial bandwidth BWP identification.

24. The method of claim 21, wherein, After determining the copy transmission resource according to the LBT result, or after receiving the information of the copy transmission resource sent by the terminal device, the method further includes: sending third indication information to the terminal device, the third indication information being used to indicate activating a target copy transmission path in the at least one copy transmission path, and / or indicating activating a first target carrier in the at least one first carrier.

25. The method of claim 17, wherein, The fourth indication information further includes an identification of at least one second carrier corresponding to the identification of each copy transmission path.

26. The method of claim 17, wherein, The determining of the copy transmission resource according to the LBT result includes: determining the copy transmission resource according to the LBT result and configuration information of the copy transmission.

27. The method of claim 25, wherein: the target carrier is all carriers in the unlicensed spectrum; or, the target carrier is a carrier in the at least one second carrier; or, the target carrier is a carrier in the unlicensed spectrum in an activated state; or, the target carrier is a carrier in the at least one second carrier in an activated state.

28. The method of any one of claims 17 to 27, wherein, Before receiving the LBT result of the target carrier in the unlicensed spectrum sent by the terminal device, the method further includes: sending fifth indication information to the terminal device, the fifth indication information being used to indicate an initial mode of the copy transmission.

29. The method according to any one of claims 17 to 27, characterized in that, After determining the copy transmission resource according to the LBT result, the method further includes: sending sixth indication information to the terminal device, the sixth indication information being used to indicate updating the copy transmission resource.

30. A terminal device, comprising: including: a processing module, configured to perform LBT detection on a target carrier in an unlicensed spectrum to obtain an LBT result of the target carrier; determine a copy transmission resource according to the LBT result, the processing module is specifically configured to send the LBT result to a network device, receive first indication information sent by the network device, the first indication information being obtained according to the LBT result, the first indication information being used to indicate the copy transmission resource, and the first indication information including at least one of the following: at least one radio bearer RB identification, at least one copy transmission path identification, a copy transmission data share, at least one first carrier identification, and an indication of activating / deactivating a copy transmission path; determine the copy transmission resource according to the first indication information, wherein the terminal device further includes: The receiving module is configured to receive fourth indication information sent by the network device, the fourth indication information being used to indicate configuration information of copy transmission, and the fourth indication information comprising: identification of at least one RB and identification of at least one copy transmission path corresponding to the identification of each RB. The processing module is further configured to configure the copy transmission path and configure a correspondence between the copy transmission path and the RB.

31. The terminal device of claim 30, wherein, The LBT result comprises at least one of the following: an indication of LBT success and an indication of LBT failure.

32. The terminal device of claim 30, wherein, The LBT result comprises at least one of the following: channel occupancy time, carrier identification and partial bandwidth BWP identification.

33. The terminal device of claim 32, wherein, The channel occupancy time comprises at least two of the following: The start time of channel occupancy, the end time of channel occupancy and the duration of channel occupancy.

34. The terminal device of claim 30, wherein, The copy transmission resource comprises at least one of the following: At least one copy transmission path, a copy transmission data share and at least one first carrier; wherein the first carrier is a carrier in the target carrier whose LBT result is LBT success.

35. The terminal device of claim 30, wherein, The identification of each copy transmission path comprises at least one of the following: radio link control (RLC) entity identification, logical channel identification and cell group identification.

36. The terminal device of claim 30, wherein, The identification of each first carrier is at least one of the following: carrier identification and BWP identification.

37. The terminal device of claim 34, wherein The processing module is further configured to activate a target copy transmission path in the at least one copy transmission path and activate a first target carrier in the at least one first carrier.

38. The terminal device of claim 37, wherein The processing module is further configured to activate time-frequency resources corresponding to the target copy transmission path; and / or activate time-frequency resources corresponding to the first target carrier.

39. The terminal device of claim 37, wherein, The terminal device further comprises: The receiving module is configured to receive third indication information sent by the terminal device, the third indication information being used to indicate activation of the target copy transmission path and activation of the first target carrier.

40. The terminal device of claim 30, wherein, The fourth indication information further comprises: identification of at least one second carrier corresponding to the identification of each copy transmission path.

41. The terminal device of claim 30, wherein The processing module is specifically configured to determine the copy transmission resource according to the LBT result and copy transmission configuration information indicated in the fourth indication information.

42. The terminal device of claim 41, wherein The target carrier is all carriers in the unlicensed spectrum; or The target carrier is a carrier in the at least one second carrier; or The target carrier is a carrier in the unlicensed spectrum in an activated state; or The target carrier is a carrier in the at least one second carrier in an activated state.

43. The terminal device of any one of claims 30 to 42, wherein, The terminal device further comprises: The receiving module is configured to receive fifth indication information sent by the network device, the fifth indication information being used to indicate an initial mode of copy transmission.

44. The terminal device of any one of claims 30 to 42, wherein, The processing module is further configured to use the copy transmission resource to transmit data to the network device.

45. The terminal device of any one of claims 30 to 42, wherein, The terminal device further includes: The receiving module is configured to receive sixth indication information sent by the network device, where the sixth indication information is used to indicate that the copied transmission resource is updated.

46. A network device, comprising: Comprise: The receiving module is configured to receive LBT result sent by the terminal device, where the LBT result is obtained by performing LBT detection on a target carrier in unlicensed spectrum; The processing module is configured to determine copied transmission resource according to the LBT result; And The sending module is configured to send first indication information to the terminal device, where the first indication information is used to indicate the copied transmission resource, and the first indication information comprises at least one of the following: at least one RB identifier, at least one copied transmission path identifier, copied transmission data share, at least one first carrier identifier, and copied transmission path activation / deactivation indication, The processing module is further configured to determine copied transmission configuration information. The terminal device further includes: The sending module is configured to send fourth indication information to the terminal device, where the fourth indication information is used to indicate copied transmission configuration information, and the fourth indication information comprises at least one RB identifier and at least one copied transmission path identifier corresponding to each RB identifier.

47. The network device of claim 46, wherein, The LBT result comprises at least one of the following: LBT success indication and LBT failure indication.

48. The network device of claim 46, wherein, The LBT result comprises at least one of the following: channel occupancy time, carrier identifier and BWP identifier.

49. The network device of claim 48, wherein, The channel occupancy time comprises at least two of the following: Channel occupancy start time, channel occupancy end time and channel occupancy duration.

50. The network device of claim 46, wherein, The copied transmission resource comprises at least one of the following: At least one copied transmission path, copied transmission data share, and at least one first carrier; wherein the first carrier is a carrier in the target carrier with LBT result as LBT success.

51. The network device of claim 46, wherein, The identifier of each copied transmission path comprises at least one of the following: RLC entity identifier, logical channel identifier and cell group identifier.

52. The network device of claim 46, wherein, The identifier of each first carrier is at least one of the following: carrier identifier and BWP identifier.

53. The network device of claim 50, wherein, The network device further includes: The sending module is configured to send third indication information to the terminal device, where the third indication information is used to indicate that a target copied transmission path in the at least one copied transmission path is activated, and / or, a first target carrier in the at least one first carrier is activated.

54. The network device of claim 46, wherein, The fourth indication information further comprises at least one second carrier identifier corresponding to each copied transmission path identifier.

55. The network device of claim 46, wherein The processing module is specifically configured to determine copied transmission resource according to the LBT result and the copied transmission configuration information.

56. The network device of claim 54, wherein The target carrier is all carriers in the unlicensed spectrum; Or, The target carrier is a carrier in the at least one second carrier; Or, The target carrier is a carrier in the unlicensed spectrum in an activated state; Or, The target carrier is a carrier in the at least one second carrier in an activated state.

57. The network device of any of claims 46-56, wherein, The network device further includes: The sending module is configured to send fifth indication information to the terminal device, where the fifth indication information is used to indicate an initial mode of copy transmission.

58. The network device of any of claims 46-56, wherein, The network device further includes: The sending module is configured to send sixth indication information to the terminal device, where the sixth indication information is used to indicate updating of the copy transmission resource.

59. A terminal device, comprising: The processor is configured to perform LBT detection on a target carrier in an unlicensed frequency spectrum to obtain an LBT result of the target carrier. According to the LBT result, a copy transmission resource is determined, The processor is specifically configured to send the LBT result to a network device, receive first indication information sent by the network device, where the first indication information is obtained according to the LBT result, the first indication information is used to indicate the copy transmission resource, and the first indication information includes at least one of the following: at least one radio bearer (RB) identifier, at least one copy transmission path identifier, a copy transmission data share, at least one first carrier identifier, and an indication of activating / deactivating a copy transmission path. According to the first indication information, the copy transmission resource is determined, The terminal device further includes: The receiver is configured to receive fourth indication information sent by the network device, where the fourth indication information is used to indicate configuration information of copy transmission, and the fourth indication information includes at least one RB identifier and at least one copy transmission path identifier corresponding to each RB identifier. The processor is further configured to configure a copy transmission path and a correspondence between the copy transmission path and an RB. The LBT result includes at least one of the following: an LBT success indication and an LBT failure indication.

60. The terminal device of claim 59, wherein, The LBT result includes at least one of the following: a channel occupancy time, a carrier identifier, and a bandwidth part (BWP) identifier.

61. The terminal device of claim 59, wherein, The channel occupancy time includes at least two of the following:

62. The terminal device of claim 61, wherein, A channel occupancy start time, a channel occupancy end time, and a channel occupancy duration. The copy transmission resource includes at least one of the following:

63. The terminal device of claim 59, wherein, At least one copy transmission path, a copy transmission data share, and at least one first carrier; and the first carrier is a carrier in the target carrier with an LBT result of LBT success. The identifier of each copy transmission path includes at least one of the following: a radio link control (RLC) entity identifier, a logical channel identifier, and a cell group identifier.

64. The terminal device of claim 59, wherein, The identifier of each first carrier is at least one of the following: a carrier identifier and a BWP identifier.

65. The terminal device of claim 59, wherein, 66. The terminal device of claim 63, wherein The processor is further configured to activate a target copy transmission path in the at least one copy transmission path and / or activate a first target carrier in the at least one first carrier.

67. The terminal device of claim 66, wherein The processor is further configured to activate a time-frequency resource corresponding to the target copy transmission path and / or activate a time-frequency resource corresponding to the first target carrier. The terminal device further includes: ​ 68. The terminal device of claim 66, wherein, ​ a receiver configured to receive third indication information sent by the terminal device, the third indication information being used to indicate activation of the target copy transmission path and / or activation of the first target carrier.

69. The terminal device of claim 59, wherein, The fourth indication information further comprises: an identifier of each copy transmission path and an identifier of at least one second carrier corresponding to the identifier of each copy transmission path.

70. The terminal device of claim 59, wherein the processor is specifically configured to determine the copy transmission resource according to the LBT result and configuration information of copy transmission indicated in the fourth indication information.

71. The terminal device of claim 70, wherein the target carrier is all carriers in the unlicensed frequency spectrum. Or, the target carrier is a carrier in the at least one second carrier. Or, the target carrier is a carrier in the unlicensed frequency spectrum in an activated state. Or, the target carrier is a carrier in the at least one second carrier in an activated state. The terminal device further comprises: a receiver configured to receive fifth indication information sent by the network device, the fifth indication information being used to indicate an initial mode of copy transmission. The processor is further configured to transmit data to the network device by using the copy transmission resource. The terminal device further comprises: a receiver configured to receive sixth indication information sent by the network device, the sixth indication information being used to indicate update of the copy transmission resource.

72. The terminal device of any one of claims 59 to 71, wherein, The network device further comprises: a receiver configured to receive an LBT result sent by the terminal device, the LBT result being obtained by performing LBT detection on a target carrier in an unlicensed frequency spectrum; 73. The terminal device of any one of claims 59 to 71, wherein, a processor configured to determine a copy transmission resource according to the LBT result; 74. The terminal device of any one of claims 59 to 71, wherein, a transmitter configured to send first indication information to the terminal device, the first indication information being used to indicate the copy transmission resource, the first indication information comprising at least one of the following: an identifier of at least one RB, an identifier of at least one copy transmission path, a number of data shares of copy transmission, an identifier of at least one first carrier, and an indication of activation / deactivation of a copy transmission path, wherein the processor is further configured to determine configuration information of copy transmission; 75. A network device, comprising: The network device further comprises: a transmitter configured to send fourth indication information to the terminal device, the fourth indication information being used to indicate the configuration information of copy transmission, the fourth indication information comprising: an identifier of at least one RB and an identifier of at least one copy transmission path corresponding to the identifier of each RB. The LBT result comprises at least one of the following: an indication of LBT success and an indication of LBT failure. The LBT result comprises at least one of the following: channel occupancy time, carrier identifier and BWP identifier. The channel occupancy time comprises at least two of the following: start time of channel occupancy, end time of channel occupancy and duration of channel occupancy. The copy transmission resource comprises at least one of the following:

76. The network device of claim 75, wherein, at least one copy transmission path, a number of data shares of copy transmission, and at least one first carrier; wherein the first carrier is a carrier in the target carrier with an LBT result of LBT success.

77. The network device of claim 75, wherein, ​ 78. The network device of claim 77, wherein, ​ ​ 79. The network device of claim 75, wherein, ​ ​ 80. The network device of claim 75, wherein, The identity of each duplicated transmission path comprises at least one of the following: an RLC entity identity, a logical channel identity, and a cell group identity.

81. The network device of claim 75, wherein, The identity of each first carrier is at least one of the following: a carrier identity and a BWP identity.

82. The network device of claim 79, wherein, The network device further comprises: a transmitter configured to transmit third indication information to the terminal device, the third indication information being used to indicate activation of a target duplicated transmission path in the at least one duplicated transmission path, and / or indicate activation of a first target carrier in the at least one first carrier.

83. The network device of claim 75, wherein, The fourth indication information further comprises an identity of at least one second carrier corresponding to the identity of each duplicated transmission path.

84. The network device of claim 75, wherein the processor is specifically configured to determine duplicated transmission resources according to the LBT result and the configuration information of the duplicated transmission.

85. The network device of claim 83, wherein the processor is specifically configured to determine the target carrier according to the LBT result and the configuration information of the duplicated transmission. The target carrier is all carriers in the unlicensed frequency spectrum; or, The target carrier is a carrier in the at least one second carrier; or, The target carrier is a carrier in the unlicensed frequency spectrum that is in an activated state; or, The target carrier is a carrier in the at least one second carrier that is in an activated state. The network device further comprises:

86. The network device of any of claims 75 to 85, wherein, a transmitter configured to transmit fifth indication information to the terminal device, the fifth indication information being used to indicate an initial mode of the duplicated transmission. The network device further comprises:

87. The network device of any of claims 75 to 85, wherein, a transmitter configured to transmit sixth indication information to the terminal device, the sixth indication information being used to indicate updating of the duplicated transmission resources. computer instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 16, or perform the method of any one of claims 17 to 29.

88. A computer-readable storage medium comprising: ​

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