Communication method, related device and communication system

Abstract

The invention provides a communication method, a related device and a communication system, which can ensure efficient resource scheduling between terminal equipment and main and auxiliary access network equipment and improve the uplink transmission rate. The method comprises: a terminal device receiving first information, the first information being used for indicating at least one shunting ratio of a first RB, the first RB being a shunting bearer between a first access network device and a second access network device and the terminal device; and the terminal equipment determines a first shunting proportion from the at least one shunting proportion, and transmits uplink data of the first RB based on the first shunting proportion.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a communication method, related device, and communication system. Background Art

[0002] In a wireless communication system, for example, in a dual connectivity (DC) scenario, there is a traffic splitting bearer mode, that is, a bearer uses both the radio resources of the master access network device and the radio resources of the secondary access network device for data transmission. This traffic splitting bearer mode can include two modes: the traffic splitting bearer with the data anchor on the master access network device and the traffic splitting bearer with the data anchor on the secondary access network device.

[0003] When performing uplink transmission using the traffic splitting bearer mode, the terminal device needs to distribute the data cached on the packet data convergence protocol (PDCP) to the radio link control (RLC) corresponding to the master and secondary access network devices according to the scheduling information of the master and secondary access network devices, and packetize and send it to the master and secondary access network devices. However, in actual transmission, in order to accelerate data processing, the terminal device distributes the data cached on the PDCP to the RLC corresponding to the master and secondary access network devices according to its own algorithm before receiving the scheduling information. However, the master and secondary access network devices cannot achieve efficient resource scheduling, which affects the uplink transmission rate. Summary of the Invention

[0004] This application provides a communication method, related device, and communication system, in order to achieve efficient resource scheduling and improve the uplink transmission rate.

[0005] In a first aspect, this application provides a communication method, which can be applied to a communication device. For example, the communication device can be a terminal device, or a component configured in the terminal device (such as a chip, a chip system, etc.), or can also be a logic module or software that can implement all or part of the functions of the terminal device. This application does not make any limitations in this regard. For the convenience of understanding and description below, the method is described by taking the terminal device as an example of the communication device.

[0006] Exemplarily, the method includes: receiving first information, where the first information is used to indicate at least one splitting ratio of a first radio bearer (RB), and the first RB is a traffic splitting bearer between a first access network device and a second access network device and the terminal device; determining a first splitting ratio, where the first splitting ratio belongs to the at least one splitting ratio; and transmitting uplink data of the first RB according to the first splitting ratio.

[0007] Exemplarily, the first RB may be a data radio bearer (DRB), a signaling radio bearer (SRB), or a multicast and broadcast service (MBS) RB (abbreviation: MRB).

[0008] Based on the above technical solution, the terminal device determines a first splitting ratio from at least one splitting ratio of the pre-received first RB for transmitting the uplink data of the first RB. Since the at least one splitting ratio is indicated to the terminal device by negotiation between the first access network device and the second access network device, and the manner in which the terminal device determines the first splitting ratio is consistent with that of the access network device, the method provided in this application can ensure that the splitting ratio used by the network side is consistent with the splitting ratio used by the terminal device, which is beneficial for the first and second access network devices to achieve efficient resource scheduling and improve the uplink transmission efficiency.

[0009] Optionally, the first splitting ratio among the at least one splitting ratio is the ratio of any two of the following data volumes: the data volume of the uplink data of the first RB split to the first access network device, the data volume of the uplink data of the first RB split to the second access network device, or the data volume of the uplink data of the first RB.

[0010] Optionally, the above first splitting ratio may be any splitting ratio among the at least one splitting ratio.

[0011] In a possible implementation, the terminal device determines the first splitting ratio based on the first information. In other words, when the terminal device does not receive other information indicating the first splitting ratio information, the terminal device and the access network device determine the first splitting ratio among the at least one splitting ratio as the first splitting ratio.

[0012] Exemplarily, the first splitting ratio is the first splitting ratio among the at least one splitting ratio.

[0013] Based on this method, it is not necessary to additionally indicate the first splitting ratio through other information, reducing the signaling overhead.

[0014] In another possible implementation, the terminal device determines the first splitting ratio according to the second information, and the second information is used to indicate the first splitting ratio.

[0015] Wherein, the second information may be sent by the first access network device to the terminal device or by the second access network device to the terminal device.

[0016] Based on this method, the terminal device can more flexibly determine the first splitting ratio from the at least one splitting ratio.

[0017] Optionally, the method further includes: receiving second information from a first access network device.

[0018] Exemplarily, the second information includes an indication of the first RB and an indication of the first splitting ratio.

[0019] Optionally, the first information and the second information are carried in the same radio resource control (RRC) signaling. For example, at least one splitting ratio of the first RB and an indication of the first splitting ratio are indicated in an RRC reconfiguration message.

[0020] Optionally, the first information is carried in RRC signaling, and the second information is carried in media access control (MAC) layer signaling, physical layer signaling, or a PDCP control packet data unit (PDU).

[0021] Among them, the MAC layer signaling can be, for example, a MAC control element (CE) (abbreviation: MAC CE), and the physical layer signaling can be, for example, downlink control information (DCI).

[0022] In a possible implementation, the at least one splitting ratio corresponds to at least one time duration and / or at least one data volume.

[0023] Among them, the time duration #1 in the at least one time duration refers to that the terminal device uses the corresponding splitting ratio within the time duration #1 in units of the time duration #1. Or rather, when the terminal device splits the uplink data of the first RB, it is necessary to ensure that the splitting ratio within any time duration #1 meets the splitting ratio corresponding to the time duration #1.

[0024] The data volume #4 in the at least one data volume refers to that the terminal device uses the corresponding splitting ratio in units of the data volume #4. Or rather, when the terminal device splits the uplink data of the first RB, it is necessary to ensure that the splitting ratio of the data for each data volume #4 meets the splitting ratio corresponding to the data volume #4. Among them, the above data volume #4 can be the data size or the number of data packets.

[0025] Based on this, more precise splitting of the uplink data of the first RB can be achieved.

[0026] In a possible implementation, the method further includes: determining a first time period corresponding to the first splitting ratio and / or the first data volume.

[0027] Exemplarily, the terminal device may determine a first time period and / or a first data volume corresponding to the first splitting ratio based on the first splitting ratio and the corresponding relationship between the first splitting ratio and the first duration and / or the first data volume.

[0028] This corresponding relationship may be indicated by the first access network device or the second access network device.

[0029] Optionally, the method further includes: receiving fourth information, where the fourth information indicates the corresponding relationship between at least one splitting ratio and at least one duration and / or at least one data volume, and the corresponding relationship includes the corresponding relationship between the first splitting ratio and the first duration and / or the first data volume. At this time, the fourth information may be carried in the same RRC signaling as the first information.

[0030] Alternatively, the fourth information indicates the corresponding relationship between the first splitting ratio and the first duration and / or the first data volume. At this time, the fourth information may be carried in a MAC layer signaling, a physical layer signaling, or a PDCP PDU.

[0031] In a possible implementation manner, the transmitting the uplink data of the first RB according to the first splitting ratio includes: splitting the uplink data of the first RB according to the first splitting ratio to determine first data and second data, where the first data corresponds to the first access network device and the second data corresponds to the second access network device; transmitting the first data to the first access network device; and transmitting the second data to the second access network device.

[0032] Optionally, before transmitting the first data to the first access network device, the method further includes: determining first buffer information based on the first data; and sending a first buffer status report (BSR) to the first access network device, where the first BSR includes the first buffer information.

[0033] Optionally, the method further includes: canceling the BSR that was triggered before sending the first BSR but not sent to the first access network device. This BSR is determined by the terminal device based on the uplink data of the first RB, rather than based on the first splitting ratio.

[0034] Optionally, before transmitting the second data to the second access network device, the method further includes: determining second buffer information based on the second data; and sending a second BSR to the second access network device, where the second BSR includes the second buffer information.

[0035] Optionally, the method further includes: canceling the BSR that was triggered before sending the second BSR but not sent to the second access network device.

[0036] In a second aspect, the present application provides a communication method, which can be applied to a communication device. For example, the communication device can be an access network device, or a component (such as a chip, a chip system, etc.) configured in the access network device, or can also be a logic module or software capable of implementing all or part of the functions of the access network device. The present application does not limit this. For the convenience of understanding and description hereinafter, the first access network device is taken as an example of the communication device to describe this method.

[0037] Exemplarily, the method includes: determining first information, where the first information is used to indicate at least one splitting ratio of the first RB, and the first RB is a split bearer between the first access network device and the second access network device and the terminal device; sending the first information.

[0038] For the description of the first RB and at least one splitting ratio, reference can be made to the first aspect, and details are not described herein again.

[0039] Based on the above technical solution, the first access network device indicates at least one splitting ratio of the first RB to the terminal device through the first information, so that the terminal device can determine a first splitting ratio for splitting the uplink data of the first RB from at least one splitting ratio. Since at least one splitting ratio is negotiated by the network side and then indicated to the terminal device, and the way for the terminal device to determine the first splitting ratio is the same as that of the access network device, the method of the present application can ensure that the splitting ratio used by the network side is the same as the splitting ratio used by the terminal device, which is beneficial to the first and second access network devices to achieve efficient resource scheduling and improve the uplink transmission efficiency.

[0040] In a possible implementation manner, the method further includes: sending second information, where the second information is used to indicate the first splitting ratio among the at least one splitting ratio.

[0041] Exemplarily, the second information includes an indication of the first RB and an indication of the first splitting ratio.

[0042] Optionally, the first information and the second information are carried in the same RRC signaling. Or, the first information is carried in the RRC signaling, and the second information is carried in the MAC layer signaling, the physical layer signaling or the PDCP PDU.

[0043] That is to say, the first information and the second information can be sent simultaneously or separately.

[0044] In a possible implementation manner, the at least one splitting ratio corresponds to at least one time period and / or at least one data volume.

[0045] The description of the time period and data volume can refer to the description in the first aspect, which will not be elaborated here.

[0046] Optionally, the method further includes: sending fourth information. The description of the fourth information can refer to the description in the first aspect, which will not be elaborated here.

[0047] In a possible implementation, the method further includes: receiving third information from the second access network device, where the third information is used to update the splitting ratio.

[0048] Optionally, the third information includes the uplink transmission bit rate currently provided by the second access network device for the first RB, and / or the uplink transmission bit rate predicted by the second access network device for the first RB.

[0049] Optionally, the third information includes the splitting ratio that the second access network device expects to use.

[0050] In a possible implementation, the method further includes: receiving a first message from the second access network device, where the first message is used to determine the first information.

[0051] Based on this, the access network device can timely adjust the splitting ratio on the terminal device side when the radio interface resources change, so that the terminal device can timely adjust the splitting ratio according to the change of the radio interface resources on the access network device side.

[0052] Optionally, the first message includes the uplink transmission bit rate provided by the second access network device for the first RB.

[0053] Optionally, the sending of the first information includes: sending the first information to the terminal device.

[0054] Optionally, the method further includes: sending the first information to the second access network device.

[0055] In a third aspect, the present application provides a communication method, which can be applied to a communication device. For example, the communication device can be an access network device, or a component (such as a chip, a chip system, etc.) configured in the access network device, or a logic module or software capable of implementing all or part of the functions of the access network device. The present application does not make any limitations in this regard. For the convenience of understanding and description hereinafter, an example in which the second access network device is the communication device is used to describe this method.

[0056] Exemplarily, the method includes: receiving first information, where the first information is used to indicate at least one splitting ratio of the first RB, and the first RB is a splitting bearer between the first access network device and the second access network device and the terminal device. Here, the second access network device is an access network device that has not established the first radio bearer (RB).

[0057] Based on the above technical solution, the second access network device can determine the proportion of scheduling uplink resources based on at least one splitting ratio of the first RB received in advance. Therefore, this method is beneficial for the first and second access network devices to achieve efficient resource scheduling and improve the uplink transmission efficiency.

[0058] In a possible implementation manner, the method further includes: sending a first message to the second access network device, where the first message is used to determine the first information.

[0059] In a possible implementation manner, the first message includes the uplink transmission bit rate provided by the second access network device for the first RB.

[0060] In a possible implementation manner, send third information to the first access network device, where the third information is used to update the splitting ratio.

[0061] Combined with the third aspect, in some implementation manners of the third aspect, the third information includes the uplink transmission bit rate currently provided by the second access network device for the first RB, and / or the uplink transmission bit rate predicted by the second access network device for the first RB.

[0062] Fourth aspect, the present application provides a communication device, including modules or units for implementing the methods in any of the above aspects and any possible implementation manner of any aspect. It should be understood that each module or unit can implement the corresponding functions by executing a computer program.

[0063] Fifth aspect, the present application provides a communication device, including a processor, where the processor is used to execute the methods described in any of the above aspects and any possible implementation manner of any aspect.

[0064] The device may further include a memory for storing a computer program, and / or a configuration file of the logic circuit. The memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the methods described in the above aspects can be implemented.

[0065] The device may further include a communication interface, where the communication interface is used for the device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces.

[0066] Sixth aspect, the present application provides a chip system, which includes at least one processor for supporting the implementation of the functions involved in any of the above aspects and any possible implementation manner of any aspect. For example, receiving or processing the data and / or information involved in the above methods.

[0067] In a possible design, the chip system further includes a memory for storing program instructions and data, and the memory is located inside or outside the processor.

[0068] The chip system may be composed of chips or may include chips and other discrete devices.

[0069] In a seventh aspect, the present application provides a computer-readable storage medium including a computer program, which when running on a computer enables the computer to implement the method in any of the above aspects and any possible implementation manner in any aspect.

[0070] In an eighth aspect, the present application provides a computer program product, which includes: a computer program (which may also be referred to as code or instruction), and when the computer program is run, it enables the computer to execute the method in any of the above aspects and any possible implementation manner in any aspect.

[0071] In a ninth aspect, the present application provides a communication system including the foregoing terminal device, first access network device, and second access network device. Among them, the terminal device is used to execute the method in the first aspect above and any possible implementation manner in the first aspect; the second access network device is used to execute the method in the second aspect above and any possible implementation manner in the second aspect; the second access network device is used to execute the method in the third aspect above and any possible implementation manner in the third aspect.

[0072] It should be understood that the technical solutions of the fourth to ninth aspects of the present application correspond to those of the first to third aspects of the present application, and the beneficial effects obtained by each aspect and the corresponding feasible implementation manners are similar and will not be elaborated herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 is a schematic architecture diagram of a communication system applicable to the method provided in the embodiment of the present application;

[0074] Figure 2 is a schematic diagram of a DRB provided in the embodiment of the present application;

[0075] Figure 3 is a schematic flowchart of a communication method provided in the embodiment of the present application;

[0076] Figure 4 is another schematic flowchart of a communication method provided in the embodiment of the present application;

[0077] Figure 5 is yet another schematic flowchart of a communication method provided in the embodiment of the present application;

[0078] Figure 6 andFigure 7 is a schematic block diagram of the device provided by an embodiment of the present application;

[0079] Figure 8 is a schematic structural diagram of the terminal device provided by an embodiment of the present application;

[0080] Figure 9 is a schematic structural diagram of the radio access network device provided by an embodiment of the present application. Specific embodiments

[0081] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0082] For ease of understanding the embodiments of the present application, the following points are first explained:

[0083] First, in the embodiments of the present application, the use of prefix words such as "first" and "second" is only for facilitating the descriptive distinction of different things belonging to the same name category, and does not restrict the order, size or quantity of things. For example, the "first access network device" and the "second access network device" are only different devices, and do not limit the number of devices or the relationship of priority levels; for another example, the "first information" and the "second information" are only different information, and there is no size relationship or priority level relationship between the two.

[0084] Second, "send" and "receive" in the embodiments of the present application represent the direction of signal transmission. For example, "sending the first information to the terminal device" can be understood as the destination of the first information being the terminal device, which may include directly sending through the air interface, or indirectly sending through other units or modules through the air interface. "Receiving the first information from the first access network device" can be understood as the source of the first information being the first access network device, which may include directly receiving from the first access network device through the air interface, or indirectly receiving from the first access network device through the air interface from other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface.

[0085] In other words, sending and receiving can be carried out between devices. For example, between the terminal device and the first access network device; it can also be carried out within the device. For example, sending or receiving between components, modules, chips, software modules or hardware modules within the device through a bus, trace or interface.

[0086] It can be understood that before the information is sent from the source end to the destination end, necessary processing may be performed, such as encoding, modulation, etc. After the destination end receives the information from the source end, corresponding processing may also be performed, such as decoding, demodulation, etc., so as to interpret the valid information from the source end. Similar expressions in the present application can be understood similarly and will not be elaborated.

[0087] Third, in the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the front and back associated objects, but does not exclude the case where it represents an "and" relationship between the front and back associated objects. The specific meaning represented can be understood in combination with the context. "At least one (item)" or its similar expression refers to any combination of these items, including any combination of single item or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c; a and b; a and c; b and c; or a, b, and c. Where a, b, and c can be single or multiple.

[0088] Fourth, in the embodiments of the present application, "indicate" can include direct indication and indirect indication, and can also include explicit indication and implicit indication. If the information indicated by a certain piece of information (such as the indication information described below) is called the information to be indicated, then in the specific implementation process, there are many ways to indicate the information to be indicated. For example, but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated, etc. The information to be indicated can also be indirectly indicated by indicating other information, where there is an association relationship between the other information and the information to be indicated; it can also only indicate a part of the information to be indicated, while the other parts of the information to be indicated are known or pre-agreed. For example, the indication of specific information can be achieved by relying on the arrangement order of each piece of information pre-agreed (such as protocol pre-definition), thereby reducing the indication overhead to a certain extent. The present application does not limit the specific manner of indication.

[0089] It can be understood that for the sender of the indication information, the indication information can be used to indicate the information to be indicated, and for the receiver of the indication information, the indication information can be used to determine the information to be indicated.

[0090] Fifth, in the embodiments of the present application, descriptions such as "when...", "in the case of...", "if", and "when" all mean that in a certain objective situation, the device (such as a network device or a terminal device) will perform corresponding processing, which does not limit time, and does not require the device (such as a network device or a terminal device) to have a judgment action during implementation, nor does it mean that there are other limitations.

[0091] Sixth, the pre-definition in the present application can be understood as: definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, solidification, or pre-firing.

[0092] The technical solutions provided by this application can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, 5th generation (5G) mobile communication systems or New Radio Access Technology (NR), satellite communication systems, etc. Among them, the 5G mobile communication system can include Non-Standalone (NSA) and / or Standalone (SA).

[0093] The technical solutions provided by this application can also be applied to future communication systems, such as 6th generation (6G) mobile communication systems, etc. This application does not make any limitations in this regard.

[0094] The Radio Access Network (RAN) device in this application is a device with wireless transceiver functions. The RAN device can provide wireless communication function services and can connect terminals to the wireless network. The RAN device can be a node in the radio access network, simply referred to as a RAN node.

[0095] In a possible scenario, the RAN node can be a base station (BS), evolved NodeB (eNodeB), transmission reception point (TRP), home evolved NodeB (or home Node B, HNB), access point (AP) of wireless fidelity (Wi-Fi), mobile switching center, next-generation NodeB (gNB) in a 5G mobile communication system, next-generation NodeB in a 6G mobile communication system, or a base station in a future mobile communication system, etc. The RAN node can also be a device that undertakes the base station function in a device-to-device (D2D) communication system, vehicle-to-everything (V2X) communication system, machine-to-machine (M2M) communication system, and Internet of Things (IoT) communication system, etc. The RAN node can also be an RAN node in a non-terrestrial network (NTN), that is, the RAN node can be deployed on a high-altitude platform or a satellite.

[0096] The RAN node can be a macro base station, a micro base station or an indoor station, or a relay node or a donor node, etc., or a radio controller in a cloud radio access network (CRAN) scenario, a node in an open radio access network (O-RAN or ORAN) scenario, etc. Optionally, the RAN node can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, the RAN node in V2X technology can be a road side unit (RSU). Of course, the RAN node can also be a node in the core network.

[0097] In another possible scenario, multiple RAN nodes cooperate to assist a terminal in achieving wireless access, and different RAN nodes respectively implement partial functions of a base station. For example, the RAN nodes can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as included in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0098] In different systems, the CU (or CU-CP and CU-UP), DU, or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be called an open CU (O-CU), the DU can also be called an open DU (O-DU), the CU-CP can also be called an open CU-CP (O-CU-CP), the CU-UP can also be called an open CU-UP (O-CU-UP), and the RU can also be called an open RU (O-RU). For the convenience of description, in this application, the CU, CU-CP, CU-UP, DU, and RU are used as examples for description.

[0099] Among them, any one of the CU (or CU-CP, CU-UP), DU, and RU can be implemented through a software module, a hardware module, or a combination of a software module and a hardware module. That is to say, the radio access network device in this application can be a virtualized device. For example, it can be implemented through general hardware and instantiated virtualization functions, or through dedicated hardware and instantiated virtualization functions. Among them, the general hardware can be a server, such as a cloud server.

[0100] The terminal device in this application can also be called a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile unit, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device.

[0101] A terminal device can be a device that provides voice / data connectivity to users. For example, it can be a handheld device, a vehicle-mounted device, etc. with wireless connection capabilities. Currently, some examples of terminal devices can be: mobile phone, pad, computer with wireless transceiver function (such as laptop, handheld computer, etc.), mobile internet device (MID), virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, wireless terminal in self-driving, drone, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, terminal device in a 5G network or terminal device in a future evolved public land mobile network (PLMN), etc.

[0102] Among them, wearable devices can also be called wearable intelligent devices, which is the general term for devices developed by applying wearable technology to the intelligent design of daily wear, such as glasses, gloves, watches, clothing, shoes, etc. Wearable devices are portable devices that are directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable intelligent devices include those with complete functions and large sizes that can achieve complete or partial functions without relying on a smartphone, such as smart watches or smart glasses, etc., and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones, such as various smart bracelets and smart jewelry for physical sign monitoring.

[0103] In addition, the terminal device can also be a terminal device in an IoT system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, so as to realize an intelligent network of human-machine interconnection and object-object interconnection. IoT technology can achieve massive connections, deep coverage, and power saving for terminals through, for example, narrow band (NB) technology.

[0104] In addition, the terminal device can also include sensors such as intelligent printers, train detectors, and gas stations. Its main functions include collecting data (for some terminal devices), receiving control information and downlink data from network devices, and sending electromagnetic waves to transmit uplink data to network devices.

[0105] The terminal device in this application can be a virtualized device. For example, it can be implemented through general hardware and instantiated virtualization functions, or through dedicated hardware and instantiated virtualization functions. Among them, the general hardware can be a server, such as a cloud server.

[0106] It should be understood that this application does not limit the specific forms of the radio access network device and the terminal device.

[0107] Figure 1 It is a schematic diagram of the architecture of the communication system 100 applicable to the method provided in the embodiments of this application. As Figure 1 shown, the communication system 100 includes a terminal device 110, an access network device 120, an access network device 130, and a core network. When the terminal device 110 supports the dual-connection function, the terminal device 110 can be connected to both the access network device 120 and the access network device 130 at the same time, and the two access network devices provide services for the terminal device 110 to improve the transmission rate and reliability of the terminal.

[0108] As Figure 1 shown, the dotted arrow indicates the control plane connection between the terminal device 110 and the network. In this application, the access network device used to carry the control plane connection is the primary access network device, that is, the access network device 120 is the primary access network device; the other access network device is the secondary access network device, that is, the access network device 130 is the secondary access network device.

[0109] It should be understood that the secondary access network device is added for the terminal device by the primary access network device. This process can refer to the existing technology and will not be elaborated here. In other words, the access network device that the terminal device accesses first can be called the primary access network device, and the access network device that is accessed later can be called the secondary access network device.

[0110] As Figure 1The solid arrows shown indicate the data links between the terminal device 110 and the network. For the downlink, after the data arrives from the core network at the access network device 130, the access network device 130 can divide the data into two parts. One part is sent to the terminal device 110 through the air interface of the access network device 130, and the other part is sent to the access network device 120 through a communication interface (e.g., Xn or X2 interface), and then sent to the terminal device 110 through the air interface of the access network device 120. For the uplink, the terminal device 110 divides the downlink data into two parts. One part is sent to the access network device 130 through the air interface of the access network device 130, and the other part is sent to the access network device 120 through the air interface of the access network device 120, and then sent to the access network device 130 through the communication interface. The two parts of data converge at the access network device 130, and the access network device 130 sends the aggregated data to the core network.

[0111] That is to say, Figure 1 In the communication system shown, the data anchor point is at the access network device 130 (secondary access network device). Therefore, this access network device 130 can be called the data anchor point station. Optionally, this application also supports the data anchor point being at the primary access network device. For example, the data anchor point is at the access network device 120. When the access network device 120 is the data anchor point station, for the downlink, the access network device 120 distributes the data; for the uplink, data aggregation is completed on the side of the access network device 120. For details, reference can be made to the description of the data anchor point at the access network device 130 above, which will not be elaborated here.

[0112] It should be understood that whether the data anchor point is at the primary access network device or the secondary access network device is determined by the primary access network device.

[0113] In this application, the primary access network device and the secondary access network device can be access network devices of different systems. For example, the primary access network device is an NR base station and the secondary base station is a 6G base station; or the primary base station is a 6G base station and the secondary base station is an NR base station. Optionally, the primary access network device and the secondary access network device can also be access network devices of the same system, such as both being 6G base stations. This application does not limit the system of the primary access network device and the primary access network device.

[0114] It should be understood that Figure 1 This is just a schematic diagram, and other devices can also be included in this communication system, which are not drawn in Figure 1 here.

[0115] The above Figure 1The data link shown is a split bearer, which means that a bearer uses both the air interface of the primary access network device and the air interface of the secondary access network device for data transmission. This split bearer includes a split bearer with a data anchor on the primary access network device and a split bearer with a data anchor on the secondary access network device. In the DC scenario, user plane data needs to be transmitted between the access network device and the terminal device through a data radio bearer (DRB). Among them, the DRB includes a series of resources such as a service data adaptation protocol (SDAP) entity, a PDCP entity, an RLC entity, a MAC entity, and a physical (PHY) layer allocation.

[0116] Figure 2 It is a schematic diagram of the DRB provided by an embodiment of the present application. As Figure 2 shown, the type of the DRB is a split bearer. If the split bearer of the DRB is established by the primary access network device (or, in other words, a split bearer with a data anchor on the primary access network device) is adopted, then in the downlink direction, the PDCP layer of the primary access network device splits the downlink data sent by the core network to the secondary access network device; in the uplink direction, if uplink splitting is supported, the primary and secondary access network devices respectively receive uplink data from the terminal device, and then the secondary access network device sends the received uplink data to the primary access network device. If in-sequence delivery is required, the primary access network device reorders the uplink data received from the primary and secondary access network devices respectively at the PDCP layer, and then sends the received data to the core network in sequence.

[0117] It can be understood that for a split bearer, the data transmitted on the primary access network device and the data transmitted on the secondary access network device can belong to different data of the same type of service.

[0118] In the present application, the access network device used to establish the split bearer of the DRB can be called the data anchor station of the DRB or the PDCP anchor station of the DRB.

[0119] As can be seen from the foregoing, whether it is a split bearer with a data anchor on the primary access network device or a split bearer with a data anchor on the secondary access network device, in the uplink direction, the data anchor station needs to reorder the uplink data received by the primary access network device and the secondary access network device at the PDCP layer and then send it to the core network in sequence. Therefore, when the data received by the primary access network device and the secondary access network device converges at the PDCP layer of the data anchor station, it is desirable that the difference in PDCP sequence numbers is not too large. To ensure that the difference in sequence numbers reaching the PDCP layer of the terminal device is small, the PDCP anchor station and the non-PDCP anchor station need to receive the BSR of the terminal device and perform uplink scheduling based on the BSR of the terminal device.

[0120] However, the buffer size included in the BSR sent by the terminal device to the primary access network device includes the data size buffered on the PDCP of the terminal device and the data size that has been distributed from the PDCP to the RLC corresponding to the primary access network device; the buffer size included in the BSR sent by the terminal device to the secondary access network device includes the data size buffered on the PDCP of the terminal device and the data size that has been distributed from the PDCP to the RLC corresponding to the secondary access network device. Since the data buffered on the PDCP is also to be distributed to the primary and secondary access network devices in the end, the buffer size included in the BSR reported by the terminal device to the primary and secondary access network devices should include the data size that has been distributed from the PDCP to the RLC corresponding to the primary access network device and the data size buffered on the PDCP that is finally distributed to the RLC corresponding to the primary and secondary access network devices. Among them, the RLC corresponding to the primary access network device can be called the logical channel corresponding to the primary access network device, and the RLC corresponding to the secondary access network device can also be called the logical channel corresponding to the secondary access network device.

[0121] In order to avoid the primary and secondary base stations from misunderstanding the buffer size included in the BSR reported by the terminal, the current protocol recommends that the terminal device, in the offload bearer mode, send as few packets as possible to or not to the RLC to ensure that the buffer size included in the BSR reported by the terminal device is the data size cached on the PDCP. In this way, when the primary and secondary access network devices perform uplink scheduling, they can consider that the buffer size included in the BSR is the data size cached on the PDCP, and then the non-PDCP anchor station performs uplink scheduling according to the transmission bit rate it promises, and the PDCP anchor station performs uplink scheduling according to the transmission bit rate obtained by subtracting the transmission bit rate of the non-PDCP anchor station from the total transmission bit rate, so as to achieve efficient data transmission.

[0122] However, in actual communication, in order to speed up data processing, the terminal device will packetize the data cached on the PDCP in advance before receiving the uplink scheduling information. The packetization ratio is determined by the terminal device according to its own algorithm. Before the network side performs uplink scheduling, it may calculate the ratio of scheduling resources based on the quality of service (QoS) segmentation. If the ratio of scheduling resources calculated by the network side is inconsistent with the packetization ratio of the terminal device, it may cause one of the primary and secondary access network devices to schedule more resources, which are wasted, and the other access network device to schedule fewer resources and not have time to transmit. As a result, the primary and secondary access network devices cannot achieve efficient resource scheduling, which affects the uplink transmission rate.

[0123] In view of this, embodiments of the present application provide a communication method, related apparatus, and communication system. In this method, the master and slave access network devices send the split ratio negotiated at both ends to the terminal device in advance, so that the terminal device splits the cached data according to the split ratio indicated by the network side, effectively avoiding the problem of low uplink transmission rate caused by the inconsistency between the packet splitting ratio determined by the terminal device and the ratio of scheduling resources determined by the network side.

[0124] It should be understood that the method provided by the embodiments of the present application can be applied to the Figure 1 scenarios shown above, and can also be applied to other scenarios with the above problems. The embodiments of the present application do not limit the applicable scenarios.

[0125] The following Figure 3 describes in detail the communication method provided by the embodiments of the present application. The method provided by the present application can be applied to the Figure 1 network architecture shown, but the embodiments of the present application are not limited thereto. The present application describes with the first access network device as the data anchor station. It should be understood that the first access network device can be the master access network device or the slave access network device.

[0126] In the Figure 3 flowchart shown, the method is shown from the perspective of the interaction between the terminal device and the access network device, but the present application does not limit the execution subject of the method. For example, Figure 3 the first access network device in Figure 3 can be replaced by a chip, chip system, or processor that supports the first access network device to implement this method, and can also be a logic module or software that can implement all or part of the functions of the first access network device; Figure 3 the second access network device in

[0127] Figure 3 can be replaced by a chip, chip system, or processor that supports the second access network device to implement this method, and can also be a logic module or software that can implement all or part of the functions of the second access network device; Figure 3 the terminal device in

[0128] can be replaced by a chip, chip system, or processor that supports the terminal device to implement this method, and can also be a logic module or software that can implement all or part of the functions of the terminal device.

[0129] In a possible implementation, the first access network device is an O-CU or a CU. That is, S301 can be replaced with: the O-CU or the CU determines the first information.

[0130] The first RB is a split bearer between the first access network device and the second access network device and the terminal. Alternatively, the first RB is a split bearer established by the first access network device for the QoS flow of the terminal device. Therefore, the first RB and the QoS flow in this application can be equivalently replaced.

[0131] It can be understood that the first information can also be used to indicate at least one split ratio of the second RB or to indicate at least one transmission bit rate group of the second RB.

[0132] Exemplarily, the RB in this application can be a DRB, an SRB, an MRB, etc.

[0133] In a possible implementation, the first information is used to indicate at least one split ratio of the first RB.

[0134] Optionally, the number of at least one split ratio of the first RB indicated by the first information is one. For example, the first information indicates the split ratio #1 of the first RB, and the split ratio #1 is the ratio of any two of the following data amounts: the data amount of the uplink data of the first RB split to the first access network device (for ease of description, hereinafter referred to as data amount #1), the data amount of the uplink data of the first RB split to the second access network device (for ease of description, hereinafter referred to as data amount #2), or the data amount of the uplink data of the first RB (for ease of description, hereinafter referred to as data amount #3).

[0135] Exemplarily, the split ratio #1 can be the ratio of data amount #1 to data amount #2, or the ratio of data amount #2 to data amount #3; the split ratio #1 can be the ratio of data amount #1 to data amount #3, or the ratio of data amount #3 to data amount #1; the split ratio #1 can be the ratio of data amount #2 to data amount #3, or the ratio of data amount #3 to data amount #2.

[0136] Optionally, the number of at least one split ratio of the first RB indicated by the first information is multiple. For example, the first information indicates the split ratio #2 and the split ratio #3 of the first RB, and the split ratio #2 and the split ratio #3 can respectively be the ratio of any two of the following data amounts: data amount #1, data amount #2, or data amount #3.

[0137] Exemplarily, the splitting ratio #2 is the ratio of data volume #1 to data volume #2, or the ratio of data volume #2 to data volume #3; the splitting ratio #2 is the ratio of data volume #1 to data volume #3, or the ratio of data volume #3 to data volume #1; the splitting ratio #2 is the ratio of data volume #2 to data volume #3, or the ratio of data volume #3 to data volume #2.

[0138] Exemplarily, the splitting ratio #3 is the ratio of data volume #1 to data volume #2, or the ratio of data volume #2 to data volume #3; the splitting ratio #3 is the ratio of data volume #1 to data volume #3, or the ratio of data volume #3 to data volume #1; the splitting ratio #3 is the ratio of data volume #2 to data volume #3, or the ratio of data volume #3 to data volume #2.

[0139] It can be understood that the two data volumes corresponding to the splitting ratio #2 and the two data volumes corresponding to the splitting ratio #3 may be the same or different. For example, the two data volumes corresponding to the splitting ratio #2 and the two data volumes corresponding to the splitting ratio #3 are both data volume 1 and data volume 2; for another example, the two data volumes corresponding to the splitting ratio #2 are data volume #1 and data volume #2 respectively, and the two data volumes corresponding to the splitting ratio #3 are data volume #1 and data volume #3 respectively.

[0140] Optionally, the first information may indicate multiple splitting ratios in the form of a splitting ratio list, and the multiple splitting ratios may include an initial splitting ratio and at least one candidate splitting ratio.

[0141] In another possible implementation, the above first information is used to indicate at least one transmission bit rate group of the first RB.

[0142] Optionally, the number of at least one transmission bit rate group of the first RB indicated by the first information is one. For example, the first information indicates the transmission bit rate group #1 of the first RB, and the transmission bit rate group #1 includes at least one of the following transmission bit rates: the uplink transmission bit rate provided by the first access network device for the first RB (for ease of description, hereinafter referred to as transmission bit rate #1), or the uplink transmission bit rate provided by the second access device for the first RB (for ease of description, hereinafter referred to as transmission bit rate #2).

[0143] Optionally, the number of at least one transmission bit rate group of the first RB indicated by the first information is multiple. For example, the first information indicates the transmission bit rate group #2 and the transmission bit rate group #3 of the first RB, and the transmission bit rate group #2 and the transmission bit rate group #3 respectively include at least one of the following transmission bit rates: transmission bit rate #1, or transmission bit rate #2.

[0144] It can be understood that the transmission bit rates included in transmission bit rate group #2 may be the same as or different from the transmission bit rates included in transmission bit rate group #3. For example, the transmission bit rates included in transmission bit rate group #2 and the transmission bit rates included in transmission bit rate group #3 are both transmission bit rate #1 and transmission bit rate #2; for another example, the transmission bit rate included in transmission bit rate group #2 is transmission bit rate #1, and the transmission bit rate included in transmission bit rate group #3 is transmission bit rate #2.

[0145] Similar to the multiple splitting ratios, the first information may indicate multiple transmission ratio rate groups in the form of a transmission ratio rate list, and the multiple transmission bit rate groups may include an initial transmission bit rate group and at least one candidate transmission bit rate group.

[0146] Optionally, in S302, the first access network device sends the first information to the terminal device. Correspondingly, the terminal device receives the first information from the first access network device.

[0147] Combined with the example where the first access network device is an O-CU or a CU, when the first access network device is an O-CU or a CU, the first access network device sending the first information to the terminal may include: the O-CU or the CU sends the first information to the O-DU or the DU through the first interface; after receiving the first information, the O-DU or the DU sends the first information to the terminal device through the RU. The first interface is the interface between the O-CU (or CU) and the O-DU (or DU).

[0148] In the embodiments of the present application, the first access network device sending information or a message (for example, the first information) to the terminal device can be understood as the first access network device sending information or a message to the terminal device through one or more network elements. For example, the first access network device is a CU, and the CU sends the first information to the terminal device through the DU and the RU.

[0149] Similarly, the terminal device receiving information or a message (for example, the first information) from the first access network device can be understood as the terminal device receiving information or a message from the first access network device through one or more network elements. For example, the first access network device is a CU, and the terminal device receives the first information from the CU through the RU and the DU.

[0150] Wherein, the first information may be carried on the RRC signaling.

[0151] Optionally, the first access network device may directly send the first information to the terminal device. Alternatively, the first access network device sends the first information to the terminal device through the air interface of the first access network device.

[0152] Exemplarily, when the first access network device is the primary access network device, the first access network device may directly send the first information to the terminal device.

[0153] Optionally, when the first access network device is the primary access network device, the method 300 further includes: the first access network device sends information for indicating at least one splitting ratio of the first RB to the second access network device.

[0154] Exemplarily, when the first access network device is a secondary access network device and after the terminal device accesses the first access network device, the first access network device may directly send the first information to the terminal device.

[0155] Optionally, the first access network device sends the first information to the terminal device through the second access network device. Alternatively, the first access network device sends the first information to the terminal through the air interface of the second access network device.

[0156] Exemplarily, when the first access network device is a secondary access network device and before the terminal device accesses the first access network device, the first access network device sends the first information to the terminal device through the second access network device.

[0157] S303. The terminal device determines the first splitting ratio or the first transmission bit rate group.

[0158] Wherein, the first splitting ratio belongs to at least one splitting ratio of the first RB; the first transmission bit rate group belongs to at least one transmission bit rate group of the first RB.

[0159] In a possible implementation, when the first information indicates at least one transmission bit rate group of the first RB, S303 may be replaced with: the terminal device determines the first transmission bit rate group.

[0160] Combined with the description in S301, when the first information indicates one transmission bit rate group of the first RB, the first transmission bit rate group is the transmission bit rate group #1. When the first information indicates multiple transmission bit rate groups of the first RB, the first transmission bit rate group may be any one of the multiple transmission bit rate groups. For example, the first transmission bit rate group is the transmission bit rate group #2 or the transmission bit rate group #3.

[0161] Optionally, the first transmission bit rate group is the first transmission bit rate group among at least one transmission bit rate group of the first RB.

[0162] Exemplarily, when the first information indicates at least one transmission bit rate group of the first RB in the form of a transmission bit rate list, the first transmission bit rate group may be the transmission bit rate group located in the first row or the first column of the transmission bit rate list.

[0163] Optionally, the terminal device determines a first transmission bit rate group according to the second information.

[0164] The second information is used to indicate the first transmission bit rate group of the first RB. The first transmission bit rate group may be indicated to the terminal device by the first access device or the second access network device.

[0165] In another possible implementation, when the first information indicates at least one splitting ratio of the first RB, S303 may be replaced by: the terminal device determines the first splitting ratio.

[0166] Combined with the description in S301, when the first information indicates a splitting ratio of the first RB, the first splitting ratio may be splitting ratio #1; when the first information indicates multiple splitting ratios of the first RB, the first splitting ratio may be any one of the multiple splitting ratios. For example, the first splitting ratio is splitting ratio #2 or splitting ratio #3.

[0167] Optionally, the first splitting ratio is the first splitting ratio among at least one splitting ratio of the first RB.

[0168] Exemplarily, when the first information indicates at least one splitting ratio in the form of a splitting ratio list, the first splitting ratio may be the splitting ratio located in the first row or the first column of the splitting ratio list.

[0169] Optionally, the terminal device determines the first splitting ratio according to the second information.

[0170] The second information is used to indicate the first splitting ratio. The first splitting ratio may be indicated to the terminal device by the first access device or the second access network device.

[0171] S304, the terminal device transmits the uplink data of the first RB according to the first splitting ratio or the first transmission bit rate group.

[0172] This S304 is related to S303. If in S303, the terminal device determines the first splitting ratio, then in S304, the terminal device transmits the uplink data of the first RB according to the first splitting ratio. If in S303, the terminal device determines the first transmission bit rate group, then in S304, the terminal device transmits the uplink data of the first RB according to the first transmission bit rate group.

[0173] A possible implementation is that the terminal device transmits the uplink data of the first RB according to the first splitting ratio, which may include: the terminal device splits the uplink data of the first RB according to the first splitting ratio to determine the first data and the second data; the terminal device transmits the first data to the first access network device and transmits the second data to the second access network device. Among them, the first data corresponds to the first access network device, and the second data corresponds to the second access network device.

[0174] It can be understood that the splitting in this application is performed by the PDCP entity of the first RB on the terminal device. That is, the PDCP entity of the first RB on the terminal device splits the uplink data of the first RB according to the first splitting ratio.

[0175] It can also be understood that the data volume of the above-mentioned first data is the data volume #1 described above, the data volume of the second data is the data volume #2 described above, and the data volume of the first data and the data volume of the second data are the data volume #3 described above.

[0176] Another possible implementation is that the terminal device transmits the uplink data of the first RB according to the first transmission bit rate group, which may include: the terminal device determines the transmission bit rate #1 and the transmission bit rate #2 according to the transmission bit rates included in the first transmission bit rate group; the terminal device transmits the uplink data of the first RB according to the transmission bit rate #1 and the transmission bit rate #2.

[0177] Exemplarily, the terminal device transmits the uplink data of the first RB according to the transmission bit rate #1 and the transmission bit rate #2, which may include: the terminal device determines the first splitting ratio according to the transmission bit rate #1 and the transmission bit rate #2; and transmits the uplink data of the first RB according to the first splitting ratio. For example, the terminal device takes the ratio of the transmission bit rate #1 and the transmission bit rate #2 as the first splitting ratio.

[0178] It should be noted that if any transmission bit rate group only includes one of the transmission bit rates of the transmission bit rate #1 and the transmission bit rate #2, then the terminal device can determine the other transmission bit rate based on one of the transmission bit rates included in the transmission bit rate group and the total transmission bit rate of the first RB. Among them, the total transmission bit rate of the RB can be determined by the terminal device based on the transmission bit rate of the QoS flow from the core network and the mapping relationship between the QoS flow and the RB from the access network device.

[0179] In an embodiment of the present application, the first access network device indicates at least one splitting ratio of the first RB to the terminal device through first information, so that the terminal device can determine, from the at least one splitting ratio, a first splitting ratio for splitting the uplink data of the first RB. Since the at least one splitting ratio is negotiated by the network side and then indicated to the terminal device, the method of the present application can ensure that the splitting ratio used by the network side is the same as the splitting ratio used by the terminal device, which is beneficial to the first and second access network devices to achieve efficient resource scheduling and improve the uplink transmission efficiency.

[0180] Optionally, the method 300 further includes: the first access network device or the second access network device determines second information for the terminal device; and sends the second information to the terminal device. Correspondingly, the terminal device receives the second information.

[0181] Wherein, the second information and the first information may be sent together or separately.

[0182] Example 1, the second information and the first information are carried in the same RRC signaling.

[0183] The second information and the first information are sent in the same way: the first access network device may directly send the second information to the terminal device, or the first access network device may send the second information to the terminal device through the second access network device. For a more detailed description, reference may be made to the description in S302 above, which will not be elaborated here.

[0184] Exemplarily, when the second information is carried in the same RRC signaling, the first access network device or the second access network device is an O-CU or a CU. That is, the O-CU or the CU determines the second information.

[0185] When the first access network device or the second access network device is an O-CU or a CU, the first access network device or the second access network device sending the second information to the terminal may include: the O-CU or the CU sends the second information to the O-DU or the DU through a first interface; after receiving the second information, the O-DU or the DU sends the second information to the terminal device through the RU. The first interface is an interface between the O-CU (or CU) and the O-DU (or DU).

[0186] Example 2, the first information is carried in RRC signaling, and the second information is carried in MAC layer signaling (for example, MAC CE), physical layer signaling (for example, DCI), or PDCP PDU.

[0187] The first information and the second information may be sent to the terminal device by the same or different access network devices.

[0188] Optionally, the above second information includes an indication of the first RB and an indication of the first splitting ratio.

[0189] Among them, the first RB may be indicated by the identifier of the first RB, and the first splitting ratio may be indicated by the index corresponding to the first splitting ratio, or the position of the first splitting ratio among at least one splitting ratio.

[0190] Exemplarily, when the second information is carried in MAC layer signaling (e.g., MAC CE), physical layer signaling (e.g., DCI), or PDCP PDU, the first access network device or the second access network device is an O-DU or a DU.

[0191] When the first access network device is an O-DU or a DU, the first access network device or the second access network device sending the second information to the terminal device may include: the O-DU or the DU sending the second information to the terminal device through the RU. Optionally, the O-DU or the DU sends the second information to the O-CU or the CU through a first interface, and the first interface is an interface between the O-CU (or CU) and the O-DU (or DU).

[0192] Optionally, in the embodiments of the present application, the access network device may also not send the first information to the terminal device, but directly indicate the first splitting ratio or the first transmission bit rate group to the terminal device through the second information carried in the MAC layer signaling, the physical layer signaling, or the PDCP PDU. Among them, the second information includes an indication of the first RB and the first splitting ratio.

[0193] Optionally, at least one splitting ratio of the first RB (or at least one transmission bit rate group indicated by the first RB) corresponds to at least one duration and / or at least one data volume.

[0194] Taking the splitting ratio as an example below, the relationship between the splitting ratio and the duration and / or the data volume is introduced. It should be understood that the splitting ratio shown below may be replaced by the transmission bit rate group.

[0195] Among them, the duration #1 in at least one duration refers to the terminal device using the corresponding splitting ratio within the duration #1 with the duration #1 as the unit. Or rather, when the terminal device splits the uplink data of the first RB, it is necessary to ensure that the splitting ratio within any duration #1 satisfies the splitting ratio corresponding to the duration #1.

[0196] The data volume #4 in at least one data volume refers to the terminal device using the corresponding splitting ratio with the data volume #4 as the unit. Or rather, when the terminal device splits the uplink data of the first RB, it is necessary to ensure that the splitting ratio of the data for each data volume #4 satisfies the splitting ratio corresponding to the data volume #4. Among them, the above data volume #4 may be the data size or the number of data packets.

[0197] A possible implementation is that at least one splitting ratio of the first RB corresponds to at least one time duration and at least one data volume. The number of the at least one splitting ratio may be the same as or different from the number of the at least one time duration, the number of the at least one splitting ratio may be the same as or different from the number of the at least one data volume, and the number of the at least one time duration and the number of the at least one data volume may also be the same as or different from each other.

[0198] Exemplarily, each splitting ratio in the at least one splitting ratio corresponds to at least one time duration and at least one data volume; or, when the number of the at least one splitting ratio is N (N is an integer greater than 1) and the N splitting ratios can be divided into multiple groups (each group includes multiple splitting ratios), each group of splitting ratios may correspond to one time duration and one data volume; or, some of the N splitting ratios correspond to at least one time period, and the remaining splitting ratios correspond to at least one data volume.

[0199] A possible implementation is that at least one splitting ratio of the first RB corresponds to at least one time duration or at least one data volume. The number of the at least one splitting ratio may be the same as or different from the number of the at least one time duration (or the number of the at least one data volume).

[0200] Exemplarily, each splitting ratio in the at least one splitting ratio corresponds to at least one time duration or at least one data volume; or, when the number of the at least one splitting ratio is N and the N splitting ratios can be divided into multiple groups (each group includes multiple splitting ratios), each group of splitting ratios may correspond to at least one time duration or at least one data volume.

[0201] Optionally, the method 300 further includes: the first access network device or the second access network device sends fourth information to the terminal device, and the fourth information is used to indicate the correspondence between at least one splitting ratio of the first RB and at least one time duration and / or at least one data volume. Correspondingly, the terminal device receives the fourth information.

[0202] The fourth information may be sent simultaneously with the first information (for example, carried in the same RRC signaling as the first information) or separately.

[0203] Optionally, the method 300 further includes: the terminal device determines a first time duration and / or a first data volume corresponding to the first splitting ratio.

[0204] Exemplarily, the terminal device may determine the first time duration and / or the first data volume according to the determined first splitting ratio and the correspondence between the splitting ratio indicated by the fourth information and the time duration and / or the data volume.

[0205] Alternatively, the terminal device determines a first duration and / or a first data volume according to the fifth information. The fifth information is used to indicate the correspondence between the first splitting ratio and the first duration and / or the first data volume. The fifth information may be sent by the access network device to the terminal device.

[0206] Exemplarily, the fifth information may be carried in a MAC layer signaling (e.g., MAC CE), a physical layer signaling (e.g., DCI), or a PDCP PDU. Therefore, when the access network device sends the second information to the terminal device, the fifth information may be sent simultaneously with or separately from the second information.

[0207] Optionally, before the terminal device transmits the first data to the first access network device, the method 300 further includes: the terminal device determines first buffer information based on the first data; and sends a first BSR to the first access network device, where the first BSR includes the first buffer information. Correspondingly, the first access network device receives the first BSR and performs uplink scheduling based on the first BSR.

[0208] Optionally, before sending the first BSR to the first access network device, the method 300 further includes: the terminal device cancels the BSR that was triggered before sending the first BSR but not sent to the first access network device, and the buffer information included in the BSR is calculated based on the uplink data of the first RB and is not determined based on the splitting ratio indicated by the first information.

[0209] Optionally, before the terminal device transmits the second data to the second access network device, the method 300 further includes: the terminal device determines second buffer information based on the second data; and sends a second BSR to the second access network device, where the second BSR includes the second buffer information. Correspondingly, the second access network device receives the second BSR and performs uplink scheduling based on the second BSR.

[0210] Optionally, before sending the second BSR to the second access network device, the method 300 further includes: the terminal device cancels the BSR that was triggered before sending the second BSR but not sent to the second access network device, and the buffer information included in the BSR is calculated based on the uplink data of the first RB and is not determined based on the splitting ratio indicated by the first information.

[0211] It should be noted that at least one splitting ratio of the first RB or at least one transmission bit rate group of the first RB in this application may be determined and sent by the access network device to the terminal device for the first time, or may be determined and sent by the access network device to the terminal device when the radio resources of the access network device change.

[0212] In a possible implementation, the first information is sent by the primary access network device to the terminal device through an RRC reconfiguration message before the terminal device accesses the secondary access network device.

[0213] It can be understood that when the primary access network device is not the first access network device, before the primary access network device sends the first information to the terminal device through an RRC reconfiguration message, the first access network device needs to send the first information to the primary access network device.

[0214] In another possible implementation, the first information is sent by the first access network device or the second access network device to the terminal device through an RRC reconfiguration message after the terminal device determines the traffic splitting ratio and when the transmission bit rate on the first access network device or the second access network device changes. That is to say, the above first information is used to update the traffic splitting ratio determined most recently.

[0215] Optionally, the method 300 further includes: the first access network device receives third information from the second access network device, and the third information is used to update the traffic splitting ratio; at this time, the first access network device determines the first information, including: the first access network device determines the first information according to the third information.

[0216] Exemplarily, the third information may include the uplink transmission bit rate currently provided by the second access network device for the first RB, and / or include the uplink transmission bit rate predicted by the second access network device for the first RB.

[0217] Optionally, when the third information includes the uplink transmission bit rate predicted by the second access network device for the first RB, the third information may further include the prediction duration corresponding to the uplink transmission bit rate. The prediction duration corresponding to the uplink transmission bit rate means that the second access network device can use the uplink transmission bit rate to transmit uplink data within the prediction duration.

[0218] Similar to the first information, the above second information may be sent by the first access network device or the second access network device to the terminal device before the terminal determines the first traffic splitting ratio. Or, the above second information is sent by the first access network device or the second access network device to the terminal device after the terminal determines the traffic splitting ratio (for example, the determined traffic splitting ratio is traffic splitting ratio #1) to be used to update the traffic splitting ratio determined most recently (for example, update traffic splitting ratio #1 to traffic splitting ratio #3).

[0219] Optionally, the method 300 further includes: the first access network device receives third information from the second access network device, and the third information is used to update the traffic splitting ratio; at this time, the first access network device determines the second information, including: the first access network device determines the second information according to the third information.

[0220] For a more detailed description of the third information, reference may be made to the relevant description above, which will not be elaborated here.

[0221] Optionally, the method 300 further includes: the second access network device sends a first message to the first access network device, where the first message is used to determine the first information. Correspondingly, the first access network device receives the first message from the second access network device.

[0222] Exemplarily, the first message includes the uplink transmission bit rate provided by the second access network device for the first RB. Or rather, the first message indicates the QoS guarantee that the second access network device can provide for the QoS flow of the terminal device. This QoS guarantee is essentially QoS parameters, and the QoS parameters represent the QoS requirements that the second access network device can guarantee for the QoS flow if it participates in the transmission of the QoS flow of the terminal device. The QoS parameters include the uplink transmission bit rate.

[0223] Exemplarily, the first message includes the traffic splitting ratio that the second access network device expects to use.

[0224] It can be understood that the number of the uplink transmission bit rate or the traffic splitting ratio expected to be used included in the first message can be one or more.

[0225] Optionally, the method 300 further includes: the second access network device sends the uplink transmission bit rate provided by the second access network device for the first RB to the terminal device to assist the terminal device in making a traffic splitting decision.

[0226] A possible scenario: the first access network device is a secondary access network device, and the second access network device is a primary access network device.

[0227] Optionally, after the first access network device receives the first message from the second access network device, the method 300 further includes: the first access network device sends a second message to the second access network device, where the second message includes the uplink transmission bit rate that the second access network device needs to provide for the first RB. Correspondingly, the second access network device receives the second message from the first access network device.

[0228] Wherein, the second message is a response message to the first message, and the first message is used to request to establish the SDAP or PDCP of the QoS flow of the terminal device on the first access network device.

[0229] Optionally, before the first access device sends the second message to the second access network device, the method 300 further includes: the first access device establishes a first RB for the QoS flow of the terminal device and carries the first RB through the second message. That is, the above second message may further include the first RB.

[0230] Another possible scenario: The first access network device is the primary access network device, and the second access network device is the secondary access network device.

[0231] Optionally, before the first access network device receives the first message from the second access network device, the method 300 further includes: The first access network device sends a second message to the second access network device, and the second message is used to request to obtain the uplink transmission bit rate provided by the second access network device for the first RB.

[0232] Wherein, the first message is a response message to the second message.

[0233] Optionally, the second message is further used to instruct the first access network device to establish an RLC bearer for the first RB.

[0234] The following will be based on Figure 3 the illustrated embodiments, and will separately combine Figure 4 and Figure 5 to introduce the communication method provided by the present application in more detail. In the communication methods illustrated in Figure 4 and Figure 5 , the example of the base station as the access network device is used for illustration. More specifically, in Figure 4 , the example of the master base station as the second access network device and the slave base station as the first access network device is used; in Figure 5 , the example of the master base station as the first access network device and the slave base station as the second access network device is used. And in the communication methods illustrated in Figure 4 and Figure 5 , the example of the first DRB as the first RB is used, and at least one splitting ratio of the first DRB is indicated by the first information for illustration.

[0235] It should be noted that Figure 4 and Figure 5 in the illustrated embodiments, the steps that are the same as or similar to those in Figure 3 the illustrated embodiment can refer to the relevant description in combination with the method 300 above, and will not be repeated.

[0236] Next, taking the split bearer with the data anchor point at the secondary base station as an example, the method provided by the embodiments of the present application will be described in detail in combination with Figure 4 .

[0237] Figure 4 is another schematic flowchart of the communication method 400 provided by the embodiments of the present application. As Figure 4 shown, the method 400 includes S401 to S416. The following will introduce each step of the method 400 in detail.

[0238] S401, The terminal device is connected to the master base station.

[0239] S402, the master base station decides to add a secondary base station for the terminal device.

[0240] Exemplarily, when the master base station is split into CU#2 (or O-CU#2)-DU#2 (or O-DU#2), S402 can be replaced with: CU#2 (or O-CU#2) decides to add a secondary base station for the terminal.

[0241] S403, the master base station sends a first request message to the secondary base station. This first request message is used to request to establish the SDAP or PDCP of the QoS flow of the terminal device at the secondary base station. Correspondingly, the secondary base station receives this first request message.

[0242] Optionally, this first request message is further used to indicate the QoS guarantee that the master base station can provide for the QoS flow. This QoS guarantee can be QoS parameters, and the QoS parameters include the uplink transmission bit rate. Alternatively, this first request message is further used to indicate the uplink transmission bit rate that the master base station can provide for the QoS flow.

[0243] This first request message can be understood as the first message in the above method 300.

[0244] Similar to the master base station, the secondary base station is split into CU#1 (or O-CU#1)-DU#1 (or O-DU#1). Combining with the example where the master base station is split into CU#2 (or O-CU#2)-DU#2 (or O-DU#2), S403 can be replaced with: CU#2 (or O-CU#2) sends a first request message to DU#2 (or O-DU#2), DU#2 (or O-DU#2) sends a first request message to DU#1 (or O-DU#1), and DU#1 (or O-DU#1) sends it to CU#1 (or O-CU#1).

[0245] It can be understood that DU#2 (or O-DU#2) can send the first request message to DU#1 (or O-DU#1) through the RU; similarly, DU#1 (or O-DU#1) receives the first request message from DU#2 (or O-DU#2) through the RU. Here, the RU includes RU#2 corresponding to DU#2 (or O-DU#2) and RU#1 corresponding to DU#1 (or O-DU#1).

[0246] S404, the secondary base station establishes a first DRB for the QoS flow of the terminal device and determines at least one splitting ratio of the first DRB. This first DRB is the splitting bearer where the data anchor point of the terminal device is at the secondary base station.

[0247] Combined with the example where the secondary base station is split into CU#1 (or O-CU#1)-DU#1 (or O-DU#1), S404 can be replaced with: CU#1 (or O-CU#1) establishes a first DRB for the QoS flow of the terminal device and determines at least one splitting ratio of the first DRB.

[0248] The description of at least one splitting ratio of the first DRB can refer to the relevant description in method 300 above, and will not be elaborated here.

[0249] S405, the secondary base station sends a first response message to the primary base station. Correspondingly, the primary base station receives the first response message.

[0250] Combined with the example where the secondary base station is split into CU#1 (or O-CU#1)-DU#1 (or O-DU#1) and the primary base station is split into CU#2 (or O-CU#2)-DU#2 (or O-DU#2), S405 can be replaced with: CU#1 (or O-CU#1) sends a first response message to DU#1 (or O-DU#1), DU#1 (or O-DU#1) sends the first response message to DU#2 (or O-DU#2), and DU#2 (or O-DU#2) sends the first response message to CU#2 (or O-CU#2).

[0251] Among them, the first response message includes the first DRB and the QoS guarantee that the primary base station needs to provide for the first DRB. The description of the QoS guarantee can refer to the description in S403 above, and will not be elaborated here.

[0252] This first response message can be understood as the second message in the above method 300.

[0253] Optionally, the first response message may further include at least one splitting ratio of the first DRB.

[0254] It should be understood that there is a one-to-one correspondence between the at least one splitting ratio and the QoS parameter (i.e., the uplink transmission bit rate).

[0255] S406, the primary base station sends an RRC reconfiguration message to the terminal device. Correspondingly, the terminal receives the RRC reconfiguration message.

[0256] Among them, the RRC reconfiguration message includes at least one splitting ratio of the first DRB determined by the secondary base station and the configuration of the RLC bearer established by the primary base station for the first DRB on the primary base station.

[0257] In conjunction with the example where the main base station is split into CU#2 (or O-CU#2)-DU#2 (or O-DU#2), S406 can be replaced with: CU#2 (or O-CU#2) sends an RRC reconfiguration message to DU#2 (or O-DU#2); DU#2 (or O-DU#2) sends an RRC reconfiguration message to the terminal device.

[0258] It can be understood that DU#2 (or O-DU#2) can send an RRC reconfiguration message to the terminal device through RU#2; similarly, the terminal device receives a message from DU#2 (or O-DU#2) through RU#2. Among them, RU#2 corresponds to DU#2 (or O-DU#2).

[0259] S407: The terminal device determines a first diversion ratio.

[0260] This process can refer to the description of determining the first diversion ratio in S303 above, which will not be described again here.

[0261] S408, the terminal device diverts the uplink data of the first DRB according to the first diversion ratio to determine data #1 and data #2.

[0262] The data #1 corresponds to the secondary base station, and the data #2 corresponds to the primary base station. The data #1 can be understood as the first data in the method 300, and the data #2 can be understood as the second data in the method 300.

[0263] S409, the terminal device sends BSR#1 to the main base station, where BSR#1 is related to data #2.

[0264] The BSR#1 is related to the data#2, which means that the cache information included in the BSR#1 is determined by the terminal device based on the data#2.

[0265] Optionally, the terminal device needs to cancel the BSR that has been triggered but not sent before sending BSR#1.

[0266] Optionally, the method 400 further includes: S410, the terminal device sends BSR#2 to the secondary base station, where the BSR#2 is related to data #1.

[0267] The BSR#2 is related to the data#1, which means that the cache information included in the BSR#2 is determined by the terminal device based on the data#1.

[0268] The above BSR#1 can be understood as the second BSR in the method 300, and BSR#2 can be understood as the first BSR in the method 300. Therefore, for the description of BSR#1 and BSR#2, reference can be made to the above related description, which will not be repeated here.

[0269] Optionally, when the radio interface resources of the master base station change, the following S411 to S416 can continue to be executed.

[0270] S411, the master base station sends traffic control information to the secondary base station. Correspondingly, the secondary base station receives the traffic control information.

[0271] The traffic control information includes the uplink transmission bit rate currently provided by the master base station for the first DRB, and / or the uplink transmission bit rate predicted by the master base station that can be provided for the first DRB.

[0272] Optionally, the traffic control information further includes a predicted effective duration.

[0273] The traffic control information can be understood as the fourth information in method 300. Therefore, for a more detailed description of the traffic control information, reference can be made to the description of the fourth information above, which will not be elaborated here.

[0274] Combined with the example where the master base station is split into CU#2 (or O-CU#2)-DU#2 (or O-DU#2), S411 can be replaced by: DU#2 (or O-DU#2) sends traffic control information to the terminal device. Optionally, DU#2 (or O-DU#2) sends traffic control information to CU#2 (or O-CU#2).

[0275] It can be understood that DU#2 (or O-DU#2) can send traffic control information to the terminal device through RU#2.

[0276] S412, the secondary base station sends an updated traffic splitting ratio to the master base station. Correspondingly, the master base station receives the updated traffic splitting ratio.

[0277] Combined with the example where the secondary base station is split into CU#1 (or O-CU#1)-DU#1 (or O-DU#1) and the master base station is split into CU#2 (or O-CU#2)-DU#2 (or O-DU#2), S412 can be replaced by: DU#1 (or O-DU#1) sends a traffic splitting ratio to DU#2 (or O-DU#2); DU#2 (or O-DU#2) sends a traffic splitting ratio to CU#2 (or O-CU#2). Optionally, DU#1 (or O-DU#1) sends a traffic splitting ratio to CU#1 (or O-CU#1).

[0278] It can be understood that DU#1 (or O-DU#1) can send a traffic splitting ratio to DU#2 (or O-DU#2) through the RU. For the description of the RU, reference can be made to the description in S403, which will not be elaborated here.

[0279] Exemplarily, the secondary base station sends a second traffic splitting ratio to the master base station.

[0280] Optionally, the master base station sends an acknowledgment message to the secondary base station.

[0281] Optionally, S412 may be replaced with: the master base station sends an updated traffic splitting ratio to the secondary base station. Correspondingly, the secondary base station receives the updated traffic splitting ratio and replies to the master base station with a rejection or confirmation.

[0282] S413, the secondary base station sends the updated traffic splitting ratio to the terminal device. Correspondingly, the terminal device receives the updated traffic splitting ratio.

[0283] Combined with the example where the secondary base station is split into CU#1 (or O-CU#1)-DU#1 (or O-DU#1), S413 may be replaced with: DU#1 (or O-DU#1) sends the updated traffic splitting ratio to the terminal device.

[0284] S414, the terminal device splits the uplink data of the first DRB according to the updated traffic splitting ratio to determine Data #3 and Data #4.

[0285] Among them, Data #3 corresponds to the secondary base station, and Data #4 corresponds to the master base station. This Data #3 can be understood as the first data in the foregoing text, and Data #4 can be understood as the second data in the foregoing text.

[0286] S415, the terminal device sends BSR#3 to the master base station, and this BSR#3 is related to Data #4.

[0287] That this BSR#3 is related to Data #4 means that the buffer information included in BSR#3 is determined by the terminal device based on Data #4.

[0288] Optionally, this method 400 further includes: S416, the terminal device sends BSR#4 to the secondary base station, and this BSR#4 is related to Data #3.

[0289] That this BSR#4 is related to Data #3 means that the buffer information included in BSR#1 is determined by the terminal device based on Data #3.

[0290] The foregoing BSR#3 can be understood as the second BSR in method 300, and BSR#4 can be understood as the first BSR in method 300. Therefore, for the descriptions of BSR#3 and BSR#4, reference may be made to the relevant descriptions in the foregoing text, and details are not described herein again.

[0291] In an embodiment of the present application, the secondary base station sends at least one splitting ratio of the first DRB to the terminal device through the primary base station, so that the terminal device can determine a first splitting ratio for splitting the first DRB from the at least one splitting ratio. Since the at least one splitting ratio sent by the base station to the terminal device is determined through negotiation on the base station side, and when the radio resources on the base station side change, the base station side can also timely indicate the updated splitting ratio to the terminal device, the method provided in the embodiment of the present application can achieve efficient resource scheduling between the terminal device and the primary and secondary access network devices and improve the uplink transmission efficiency.

[0292] Next, taking the split bearer with the data anchor at the primary base station as an example, the method provided in the embodiment of the present application will be Figure 5 described in detail.

[0293] Figure 5 is another schematic flowchart of the communication method 500 provided in the embodiment of the present application. As Figure 5 shown, the method 500 includes S501 to S517. Each step of the method 500 will be introduced in detail below.

[0294] S501, the terminal device is connected to the primary base station.

[0295] S502, the primary base station decides to add a secondary base station for the terminal device and establishes a first DRB for the QoS flow of the terminal device. The first DRB is the split bearer with the data anchor of the terminal device at the primary base station.

[0296] S503, the primary base station sends a second request message to the secondary base station. The second request message includes the QoS parameters of the first DRB. Correspondingly, the secondary base station receives the second request message.

[0297] Among them, the QoS parameters are the QoS guarantees that the primary base station requests the secondary base station to provide for the first DRB. The description of the QoS guarantee can refer to the relevant description in S402 above and will not be repeated here.

[0298] Optionally, the second request message further instructs the secondary base station to establish an RLC bearer for the first DRB.

[0299] The second request message can be understood as the second message in the above method 300.

[0300] S504, the secondary base station sends a second response message to the primary base station. The second response message includes the QoS guarantee provided by the secondary base station for the first DRB. Correspondingly, the primary base station receives the second response message.

[0301] The description of the QoS guarantee can refer to the relevant description in S402 above and will not be repeated here.

[0302] The second response message can be understood as the first message of the above method 300.

[0303] S505. The master base station determines at least one splitting ratio of the first DRB according to the second response message.

[0304] S506. The master base station sends at least one splitting ratio of the first DRB to the secondary base station. Correspondingly, the secondary base station receives at least one splitting ratio of the first DRB.

[0305] For the description of at least one splitting ratio, reference can be made to the relevant description in S301 above, which will not be elaborated here.

[0306] S507. The master base station sends an RRC reconfiguration message to the terminal device. Correspondingly, the terminal device receives the RRC reconfiguration message.

[0307] Among them, the RRC reconfiguration message includes at least one splitting ratio of the first DRB. This RRC reconfiguration message can be understood as the first information in the above method 300.

[0308] S508. The terminal device determines the first splitting ratio.

[0309] S509. The terminal device splits the uplink data of the first DRB according to the first splitting ratio to determine Data #1 and Data #2.

[0310] Among them, Data #1 corresponds to the master base station, and Data #2 corresponds to the secondary base station. This Data #1 can be understood as the first data in method 300, and Data #2 can be understood as the second data in method 300.

[0311] S510. The terminal device sends BSR #1 to the master base station, and this BSR #1 is related to Data #1.

[0312] That the BSR #1 is related to Data #1 means that the buffer information included in the BSR #1 is determined by the terminal device based on Data #1.

[0313] Optionally, the terminal device needs to cancel the triggered but unsent BSR before sending BSR #1.

[0314] Optionally, the method 500 further includes: S511. The terminal device sends BSR #2 to the secondary base station, and this BSR #2 is related to Data #2.

[0315] That the BSR #2 is related to Data #2 means that the buffer information included in the BSR #2 is determined by the terminal device based on Data #2.

[0316] Among them, BSR#1 can be understood as the first BSR of method 300, and BSR#2 can be understood as the second BSR in the foregoing method 300. Therefore, for the descriptions of BSR#1 and BSR#2, reference can be made to the relevant descriptions above, and details are not elaborated herein.

[0317] Optionally, when the radio interface resources of the secondary base station change, the following S512 to S517 can be continued.

[0318] S512, the secondary base station sends traffic control information to the primary base station. Correspondingly, the primary base station receives the traffic control information from the secondary base station.

[0319] The traffic control information includes the uplink transmission bit rate currently provided by the secondary base station for the first DRB, and / or the uplink transmission bit rate predicted by the secondary base station that can be provided for the first DRB.

[0320] S513, the primary base station sends an updated traffic splitting ratio to the secondary base station. Correspondingly, the secondary base station receives the updated traffic splitting ratio.

[0321] Optionally, the secondary base station sends an acknowledgment message to the primary base station.

[0322] Optionally, S513 can be replaced with: the secondary base station sends an updated traffic splitting ratio to the primary base station. Correspondingly, the primary base station receives the updated traffic splitting ratio and replies with a rejection or an acknowledgment to the secondary base station.

[0323] S514, the primary base station sends the updated traffic splitting ratio to the terminal device. Correspondingly, the terminal device receives the updated traffic splitting ratio.

[0324] S515, the terminal device splits the uplink data of the first DRB according to the updated traffic splitting ratio to determine Data #3 and Data #4.

[0325] Among them, Data #3 corresponds to the primary base station, and Data #4 corresponds to the secondary base station. This Data #3 can be understood as the first data in method 300, and Data #4 can be understood as the second data in method 300.

[0326] S516, the terminal device sends BSR#3 to the primary base station, and this BSR#3 is related to Data #3.

[0327] Optionally, the method 500 further includes: S517, the terminal device sends BSR#4 to the secondary base station, and this BSR#4 is related to Data #4.

[0328] The foregoing BSR#3 can be understood as the first BSR in method 300, and BSR#4 can be understood as the second BSR in method 300. Therefore, for the descriptions of BSR#3 and BSR#4, reference can be made to the relevant descriptions above, and details are not elaborated herein.

[0329] The above S508 to S517 can refer to the descriptions in S407 to S416 of Method 400. Details are not repeated here.

[0330] Exemplarily, when the master base station is split into CU#2 (or O-CU#2)-DU#2 (or O-DU#2), and the secondary base station is split into CU#1 (or O-CU#1)-DU#1 (or O-DU#1), for a more detailed description of S502 to S517, reference can be made to the description in Method 400 above. Details are not repeated here.

[0331] In the embodiments of the present application, the secondary base station sends at least one splitting ratio of the first DRB to the terminal device through the master base station, so that the terminal device can determine, from the at least one splitting ratio of the first DRB, a first splitting ratio for splitting the first DRB. Since the at least one splitting ratio sent by the base station to the terminal device is determined through negotiation on the base station side, and when the radio resources on the base station side change, the base station side can also timely indicate the updated splitting ratio to the terminal device. Therefore, the method provided by the embodiments of the present application can achieve efficient resource scheduling between the terminal device and the master and secondary access network devices, and improve the uplink transmission efficiency.

[0332] It can be understood that the above Figures 3 to 5 shown embodiments are implemented independently. When Figures 3 to 5 the shown embodiments are implemented alone, more or fewer steps than Figure 4 and Figure 5 shown steps can be executed. That is to say, all the steps shown in the above embodiments can be executed, or some of them can be executed. The present application does not make any limitation in this regard.

[0333] The above has described in detail the method provided by the embodiments of the present application. Next, the device provided by the embodiments of the present application will be described in detail with reference to Figures 3 to 5 Next, the device provided by the embodiments of the present application will be described in detail with reference to Figures 6 to 9 Next, the device provided by the embodiments of the present application will be described in detail with reference to

[0334] Figure 6 and Figure 7 are schematic diagrams of possible devices provided by the embodiments of the present application. These devices can be used to implement the functions of the terminal device, the first access network device, or the second access network device in the above method embodiments, and thus can also achieve the beneficial effects possessed by the above method embodiments.

[0335] Figure 6 is a schematic block diagram of the device provided by the embodiments of the present application. As Figure 6 shown, the device 600 includes a transceiver module 610 and a processing module 620.

[0336] A possible design is that the device 600 is used to implement the above Figures 3 to 5The functions of the terminal device in the method embodiments shown.

[0337] Exemplarily, the transceiver module 610 is configured to receive first information, where the first information is used to indicate at least one splitting ratio of a first radio bearer (RB); the processing module 620 is configured to: determine a first splitting ratio, where the first splitting ratio belongs to the at least one splitting ratio; the transceiver module 610 is further configured to: transmit uplink data of the first RB according to the first splitting ratio.

[0338] Optionally, the processing module 620 is specifically configured to: determine the first splitting ratio according to second information, where the second information is used to indicate the first splitting ratio.

[0339] Optionally, the processing module 620 is further configured to: split the uplink data of the first RB according to the first splitting ratio to determine first data and second data, where the first data corresponds to the first access network device and the second data corresponds to the second access network device; the transceiver module 610 is further configured to: transmit the first data to the first access network device; and transmit the second data to the second access network device.

[0340] Optionally, the processing module 620 is further configured to: determine first buffer information based on the first data; the transceiver module 610 is further configured to: send a first buffer status report (BSR) to the first access network device, where the first BSR includes the first buffer information.

[0341] Optionally, the processing module 620 is further configured to: cancel the BSR that was triggered before sending the first BSR but not sent to the first access network device.

[0342] Optionally, the processing module 620 is further configured to: determine second buffer information based on the second data; the transceiver module 610 is further configured to: send a second BSR to the second access network device, where the second BSR includes the second buffer information.

[0343] Optionally, the processing module 620 is further configured to: cancel the BSR that was triggered before sending the second BSR but not sent to the second access network device.

[0344] For a more detailed description of the above transceiver module 610 and processing module 620, reference can be directly made to the relevant description in the Figures 3 to 5 shown embodiments, which will not be elaborated here.

[0345] Another possible design is that the apparatus 600 is used to implement the functions of the first access network device in the method embodiments shown above Figures 3 to 5 shown.

[0346] Exemplarily, the processing module 620 is configured to: determine first information, where the first information is used to indicate at least one traffic splitting ratio of the first RB; the transceiver module 610 is configured to: send the first information.

[0347] Optionally, the transceiver module 610 is further configured to: send the second information, where the second information is used to indicate a first traffic splitting ratio among the at least one traffic splitting ratio.

[0348] Optionally, the transceiver module 610 is further configured to: receive third information from the second access network device, where the third information is used to update the traffic splitting ratio.

[0349] Optionally, the transceiver module 610 is further configured to: receive a first message from the second access network device, where the first message is used to determine the first information.

[0350] For a more detailed description of the above transceiver module 610 and processing module 620, reference can be directly made to Figures 3 to 5 the relevant descriptions in the illustrated embodiments, which will not be elaborated here.

[0351] Another possible design is that the apparatus 600 is used to implement the functions of the second access network device in the method embodiment shown above Figures 3 to 5 in the above.

[0352] Exemplarily, the transceiver module 610 is configured to: receive first information, where the first information is used to indicate at least one traffic splitting ratio of the first RB.

[0353] Optionally, the transceiver module 610 is further configured to: send a first message to the second access network device, where the first message is used to determine the first information.

[0354] Optionally, the transceiver module 610 is further configured to: send third information to the first access network device, where the third information is used to update the traffic splitting ratio.

[0355] For a more detailed description of the above transceiver module 610 and processing module 620, reference can be directly made to Figures 3 to 5 the relevant descriptions in the illustrated embodiments, which will not be elaborated here.

[0356] It should be noted that the apparatus 600 may include a sending module but not a receiving module. Or, the apparatus 600 may include a receiving module but not a sending module. Specifically, it depends on whether the above solution executed by the apparatus 600 includes sending actions and receiving actions. It can be understood that since the apparatus 600 has a communication function, it can also be referred to as a communication device.

[0357] Figure 7 is another schematic block diagram of the apparatus provided in the embodiments of the present application. As Figure 7As shown, the apparatus 700 includes one or more processors 710. The processor 710 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the apparatus (such as a terminal device, a first access network device, a second access network device, or a chip, etc.), execute software programs, and process data of the software programs.

[0358] Optionally, in one design, the processor 710 may include a program (which can also be referred to as code or instructions sometimes), and the program can be run on the processor 710, so that the apparatus 700 executes the methods performed by the terminal device, the first access network device, or the second access network device in the above method embodiments. In another possible design, the apparatus 700 includes a circuit ( Figure 7 (not shown), and the circuit is used to implement the functions of the terminal device, the first access network device, or the second access network device in the above method embodiments.

[0359] Exemplarily, the processor 710 can be used to execute computer programs or instructions in the memory to implement Figures 3 to 5 the steps performed by the terminal device, the first access network device, or the second access network device in any of the method embodiments shown in the shown embodiments.

[0360] Optionally, the apparatus 700 may include one or more memories 720, on which there is a program (which can also be referred to as code or instructions sometimes), and the program can be run on the processor 710, so that the apparatus 700 executes the methods performed by the terminal device, the first access network device, or the second access network device in the above embodiments.

[0361] Optionally, the processor 710 and / or the memory 720 may include an artificial intelligence (AI) module, and the AI module is used to implement AI-related functions. The AI module can be implemented in a software, hardware, or software-hardware combination manner. For example, the AI module may include a radio intelligent controller (RIC) module. For example, the AI module may be a near-real-time RIC or a non-real-time RIC.

[0362] Optionally, data may also be stored in the processor 710 and / or the memory 720. The processor and the memory can be provided separately or integrated together.

[0363] Optionally, the device 700 may further include a communication interface 730. The processor 710, sometimes also referred to as a processing unit, controls the device (such as a terminal device, a first access network device, or a second access network device). The communication interface 730, sometimes also referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., is used to implement the transceiver function of the device.

[0364] Optionally, the device 700 further includes a communication interface 730. The processor 710 and the communication interface 730 are coupled to each other. It can be understood that the communication interface 730 can be a transceiver or an input / output interface.

[0365] It can be understood that since the device 700 has a communication function, it can also be referred to as a communication device.

[0366] When the device 700 is used to implement Figure 3 the method, the processor 710 is used to execute the functions of the above-mentioned processing unit, and the communication interface 730 is used to execute the functions of the above-mentioned transceiver module. Whether the communication interface 730 is used for sending or receiving specifically depends on whether the device 700 performs a sending action or a receiving action in the implemented solution.

[0367] When the above-mentioned device 700 is a chip applied to a terminal device, the chip implements the functions of the terminal device in the above method embodiment. The chip of the terminal device receives a signal from other modules (such as a radio frequency module or an antenna) in the terminal device, and the signal can be sent by a first access network device or a second access network device to the terminal device; or, the chip of the terminal device sends a signal to other modules (such as a radio frequency module or an antenna) in the terminal device, and the signal can be sent by the terminal device to a first access network device or a second access network device.

[0368] When the above-mentioned device 700 is a chip applied to a first access network device (or a second access network device), the chip implements the functions of the first access network device (or the second access network device) in the above method embodiment. The chip of the first access network device (or the second access network device) receives a signal from other modules (such as a radio frequency module or an antenna) in the first access network device (or the second access network device), and the signal can be sent by the terminal device to the first access network device (or the second access network device); or, the chip of the network device sends a signal to other modules (such as a radio frequency module or an antenna) in the first access network device (or the second access network device), and the signal can be sent by the first access network device (or the second access network device) to the terminal device.

[0369] It can be understood that when the device 700 is a terminal device, a first access network device, or a second access network device, the communication interface 730 can be a transceiver, which can specifically include a transmitter and a receiver. The transmitter is used to send signals, and the receiver is used to receive signals. When the device 700 is a chip applied to a terminal device, a first access network device, or a second access network device, the communication interface 730 can be an input / output circuit, where the input circuit can be used for receiving, and the output interface can be used for sending.

[0370] Figure 8 is a schematic structural diagram of a terminal device provided by an embodiment of the present application. As Figure 8 shown, the terminal device 800 can be applied to a system as Figure 1 shown, and execute the functions of the terminal device in the above method embodiments. As shown in the figure, the terminal device 800 includes a processor 801 and a transceiver 802. Optionally, the terminal device 800 further includes a memory 803. Among them, the processor 801, the transceiver 802, and the memory 803 can communicate with each other through an internal connection path to transmit control and / or data signals. The memory 803 is used to store a computer program, and the processor 801 is used to call and run the computer program from the memory 803 to control the transceiver 802 to send and receive signals. Optionally, the terminal device 800 can further include an antenna 804, which is used to send the uplink data or uplink control signaling output by the transceiver 802 through a wireless signal.

[0371] The above-mentioned processor 801 and the memory 803 can be integrated into a processing device. The processor 801 is used to execute the program code stored in the memory 803 to implement the above functions. Specifically, the memory 803 can also be integrated in the processor 801 or be independent of the processor 801. The processor 801 can correspond to Figure 6 the processing module in Figure 7 or the processor in

[0372] The above-mentioned transceiver 802 can correspond to Figure 6 the transceiver module in Figure 7 or the communication interface in

[0373] It should be understood that Figure 8 the terminal device 800 shown in Figures 3 to 5Each step of the method embodiment described above involves a terminal device. The operations and / or functions of each module in the terminal device 800 are respectively for implementing the corresponding processes in the above method embodiment. For details, please refer to the description in the above method embodiment. To avoid repetition, the detailed description is appropriately omitted here.

[0374] The above-mentioned processor 801 can be used to execute the actions implemented inside the terminal device described in the previous method embodiment, and the transceiver 802 can be used to execute the actions of the terminal device sending to or receiving from the network device described in the previous method embodiment. For details, please refer to the description in the previous method embodiment and will not be elaborated here.

[0375] Optionally, the above-mentioned terminal device 800 may further include a power supply 805 for supplying power to various components or circuits in the terminal device 800.

[0376] In addition, to make the functions of the terminal device more complete, the terminal device 800 may further include one or more of an input unit 806, a display unit 807, an audio circuit 808, a camera 809, and a sensor 810, etc. The audio circuit may further include a speaker 808a, a microphone 808b, etc.

[0377] Figure 9 It is a schematic structural diagram of a radio access network device provided by an embodiment of the present application, for example, it may be a schematic structural diagram of a base station. The base station 900 can be applied to a system as Figure 1 shown, and execute the functions of the access network device in the above method embodiment. As Figure 9As shown, the base station 900 may include one or more of the following: one or more (DU+RU) 910, one or more CUs 920. The CU 920 may communicate with the next generation core network (NG core). The DU may include at least one antenna 911, at least one radio frequency unit 912, at least one processor 913, and at least one memory 914. The DU part is mainly used for the transceiver of radio frequency signals, the conversion between radio frequency signals and baseband signals, and partial baseband processing. The CU 920 may include at least one processor 922 and at least one memory 921. Communication may be carried out between the CU and the DU through an interface. Among them, the control plane (CP) interface may be Fs-C, such as F1-C, and the user plane (UP) interface may be Fs-U, such as F1-U. The DU and the RU may cooperate to jointly implement the functions of the physical (PHY) layer. One DU may be connected to one or more RUs. The functions of the DU and the RU may be configured in various ways according to the design. For example, the DU is configured to implement baseband functions, and the RU is configured to implement intermediate radio frequency functions. For another example, the DU is configured to implement the high-layer functions in the PHY layer, and the RU is configured to implement the low-layer functions and radio frequency functions in the PHY layer. The high-layer functions in the PHY layer may include a part of the functions of the PHY layer, and this part of the functions is closer to the MAC layer. The low-layer functions in the PHY layer may include another part of the functions of the PHY layer, and this part of the functions is closer to the intermediate radio frequency side.

[0378] The CU 920 is mainly used for baseband processing and controlling the base station, etc. The DU and the CU 920 may be physically set together or physically separated, that is, a distributed base station. The CU 920 is the control center of the base station and may correspond to Figure 6 the processing module in Figure 7 or the processor in

[0379] and may also be called a processing unit, mainly used to complete the baseband processing function. For example, the CU 920 may be used to control the base station to execute the operation process of the access network device in the above method embodiments.

[0380] In addition, optionally, the base station 900 may include one or more radio units (RUs), one or more DUs, and one or more CUs. Among them, the DU may include at least one processor 913 and at least one memory 914, the RU may include at least one antenna 911 and at least one radio unit 912, and the CU may include at least one processor 922 and at least one memory 921.

[0381] In one example, the CU 920 may be composed of one or more single boards. Multiple single boards may jointly support a radio access network with a single access indication (such as a 5G network), or may separately support radio access networks with different access systems (such as an LTE network, a 5G network, or other networks). The memory 921 and the processor 922 may serve one or more single boards. That is to say, a memory and a processor may be separately provided on each single board. It is also possible that multiple single boards share the same memory and processor. In addition, necessary circuits may be provided on each single board. The DU may be composed of one or more single boards. Multiple single boards may jointly support a radio access network with a single access indication (such as a 5G network), or may separately support radio access networks with different access systems (such as an LTE network, a 5G network, or other networks). The memory 914 and the processor 913 may serve one or more single boards. That is to say, a memory and a processor may be separately provided on each single board. It is also possible that multiple single boards share the same memory and processor. In addition, necessary circuits may be provided on each single board.

[0382] It should be understood that Figure 9 the shown base station 900 can implement Figures 3 to 5 each process related to the first access network device or the second access network device in the shown method embodiments. The operations and / or functions of each module in the base station 900 are respectively for implementing the corresponding processes in the above method embodiments. For details, reference may be made to the descriptions in the above method embodiments. To avoid repetition, detailed descriptions are appropriately omitted here.

[0383] It should be understood that Figure 9 the shown base station 900 is only a possible architecture of a radio access network device, and should not impose any limitation on this application. The method provided in this application is applicable to network devices with other architectures. For example, radio access network devices including CUs, DUs, and AAUs, etc. This application does not limit the specific architecture of the radio access network device.

[0384] It should be understood that Figure 9 by way of example only and not limitation, the radio access network device may not depend on Figure 9The structures shown. For example, the radio access network device may also include an AAU, and may also include a CU and / or a DU. Alternatively, the radio access network device may include a BBU and may also include an adaptive radio unit (ARU). This application is not limited thereto.

[0385] The above-mentioned CU and / or DU can be used to perform the actions implemented inside the radio access network device described in the previous method embodiments, while the AAU can be used to perform the actions of the radio access network device sending to or receiving from the terminal device described in the previous method embodiments. For specific details, please refer to the description in the previous method embodiments and will not be elaborated here.

[0386] It should be noted that the above method embodiments can be applied to a processor or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. During implementation, the steps of the above method embodiments can be completed through the integrated logic circuit in the hardware of the processor or instructions in software form.

[0387] The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0388] The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as being executed and completed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. This storage medium is located in the memory, and the processor reads the information in the memory and combines its hardware to complete the steps of the above method.

[0389] It will be appreciated that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include but not be limited to these and any other suitable types of memory.

[0390] The method provided by the above embodiments can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in the form of a computer program product in whole or in part. The computer program product may include one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from a website, computer, server, or data center to another website, computer, server, or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more integrated available media. The available medium may be a magnetic medium (such as a floppy disk, hard disk, magnetic disk), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0391] The embodiments of the present application further provide a computer program product, which includes: a computer program (which may also be referred to as code or instructions). When the computer program is run, Figures 3 to 5 the method executed by the terminal device in the shown embodiment is executed, or the method executed by the first access network device is executed, or the method executed by the second access network device is executed.

[0392] The embodiments of the present application further provide a computer-readable storage medium, which stores a computer program (which may also be referred to as code or instructions). When the computer program is run, Figures 3 to 5 the method executed by the terminal device in the shown embodiment is executed, or the method executed by the first access network device is executed, or the method executed by the second access network device is executed.

[0393] The embodiments of the present application further provide a chip, which includes at least one processor and a communication interface. The communication interface and the at least one processor are interconnected by a line. When the at least one processor runs a computer program or instructions, Figures 3 to 5 the method executed by the terminal device in the shown embodiment is executed, or the method executed by the first access network device is executed, or the method executed by the second access network device is executed.

[0394] An embodiment of the present application further provides a communication system, which includes the foregoing terminal device, a first access network device, and a second access network device.

[0395] Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. A professional technician can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of this application.

[0396] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0397] In several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces. The indirect coupling or communication connection of the devices or units may be in an electrical, mechanical, or other form.

[0398] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0399] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0400] When the above-mentioned functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories, random access memories, magnetic disks, or optical discs.

[0401] As described above, the above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, and all should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claimed rights.

Claims

1. A communication method, characterized in that, Applied to a terminal device, the method includes: Receiving first information, where the first information is used to indicate at least one splitting ratio of a first radio bearer (RB), and the first RB is a splitting bearer between a first access network device and a second access network device and the terminal device; Determining a first splitting ratio, where the first splitting ratio belongs to the at least one splitting ratio; Transmitting uplink data of the first RB according to the first splitting ratio.

2. The method according to claim 1, wherein The first splitting ratio is a ratio of any two of the following data volumes: the data volume of the uplink data of the first RB split to the first access network device, the data volume of the uplink data of the first RB split to the second access network device, or the data volume of the uplink data of the first RB.

3. The method according to claim 1 or 2, characterized in that, The first splitting ratio is the first splitting ratio among the at least one splitting ratio.

4. The method according to claim 1 or 2, characterized in that, The determining the first splitting ratio includes: Determining the first splitting ratio according to second information, where the second information is used to indicate the first splitting ratio.

5. The method according to claim 4, wherein The first information and the second information are carried in the same radio resource control (RRC) signaling; or, The first information is carried in RRC signaling, and the second information is carried in media access control (MAC) layer signaling, physical layer signaling, or packet data convergence protocol (PDCP) control packet data unit (PDU).

6. The method according to claim 4 or 5, characterized in that, The second information includes an indication of the first RB and an indication of the first splitting ratio.

7. The method according to any one of claims 1 to 6, characterized in that, The at least one splitting ratio corresponds to at least one duration and / or at least one data volume.

8. The method according to claim 7, wherein The method further includes: Determining a first time period and / or a first data volume corresponding to the first splitting ratio.

9. The method according to any one of claims 1 to 8, characterized in that The transmitting the uplink data of the first RB according to the first splitting ratio includes: Splitting the uplink data of the first RB according to the first splitting ratio to determine first data and second data, where the first data corresponds to the first access network device and the second data corresponds to the second access network device; Transmitting the first data to the first access network device; Transmitting the second data to the second access network device.

10. The method according to claim 9, characterized in that, The method further includes: Determining first buffer information based on the first data; Sending a first buffer status report (BSR) to the first access network device, where the first BSR includes the first buffer information.

11. The method according to claim 10, wherein, The method further includes: Canceling the BSR that was triggered before sending the first BSR but not sent to the first access network device.

12. The method according to any one of claims 9 to 11, characterized in that The method further includes: Determining second buffer information based on the second data, and sending a second BSR to the second access network device, where the second BSR includes the second buffer information.

13. The method according to claim 12, wherein The method further includes: Canceling the BSR that was triggered before sending the second BSR but not sent to the second access network device.

14. A communication method, characterized in that, Applied to a first access network device, where the first access network device is an access network device that establishes a first radio bearer (RB), the method includes: Determining first information, where the first information is used to indicate at least one splitting ratio of the first RB, and the first RB is a splitting bearer between the first access network device and the second access network device and the terminal device; Sending the first information.

15. The method according to claim 14, characterized in that, The first splitting ratio in the at least one splitting ratio is the ratio of any two of the following data volumes: the data volume of the uplink data of the first RB split to the first access network device, the data volume of the uplink data of the first RB split to the second access network device, and the data volume of the uplink data of the first RB.

16. The method according to claim 14 or 15, characterized in that, The method further includes: Sending second information, where the second information is used to indicate the first splitting ratio in the at least one splitting ratio.

17. The method according to claim 16, wherein The first information and the second information are carried in the same radio resource control (RRC) signaling; or, The first information is carried in RRC signaling, and the second information is carried in media access control (MAC) layer signaling, physical layer signaling, or packet data convergence protocol (PDCP) control packet data unit (PDU).

18. The method according to claim 16 or 17, characterized in that, The second information includes an indication of the first RB and an indication of the first splitting ratio.

19. The method according to any one of claims 14 to 18, characterized in that, The at least one splitting ratio corresponds to at least one time period and / or at least one data volume.

20. The method according to any one of claims 14 to 19, characterized in that The method further includes: Receiving third information from the second access network device, where the third information is used to update the splitting ratio.

21. The method according to claim 20, wherein The third information includes the uplink transmission bit rate currently provided by the second access network device for the first RB, and / or the uplink transmission bit rate predicted by the second access network device for the first RB.

22. The method according to any one of claims 14 to 21, characterized in that The method further includes: Receiving a first message from the second access network device, where the first message is used to determine the first information.

23. The method according to claim 22, wherein The first message includes the uplink transmission bit rate provided by the second access network device for the first RB.

24. A communication device, characterized in that, Includes a module for implementing the method according to any one of claims 1 to 13; or, includes a module for implementing the method according to any one of claims 14 to 23.

25. A communication device, characterized in that, Includes a processor, which, by executing a computer program and / or through a logic circuit, enables the communication device to implement the method according to any one of claims 1 to 13, or enables the communication device to implement the method according to any one of claims 14 to 23.

26. The device according to claim 25, characterized in that, Further includes a memory for storing the computer program and / or the configuration file of the logic circuit.

27. The device according to claim 25 or 26, characterized in that, Further includes a communication interface for inputting and / or outputting signals.

28. A computer-readable storage medium, on which a computer program is stored, characterized in that, When the computer program is executed by the processor, the method according to any one of claims 1 to 13 is executed, or the method according to any one of claims 14 to 23 is executed.

29. A computer program product, characterized in that, Includes a computer program, and when the computer program is run, the method according to any one of claims 1 to 13 is executed, or the method according to any one of claims 14 to 23 is executed.

30. A chip, characterized in that, Includes at least one processor and a communication interface, the communication interface and the at least one processor are interconnected by a line, and the at least one processor is used to run a computer program or instruction to execute the method according to any one of claims 1 to 13, or to execute the method according to any one of claims 14 to 23.

31. A communication system, characterized in that, It includes a terminal device and a first access network device. Among them, the terminal device is used to implement the method described in any one of claims 1 to 13, and the first access network device is used to implement the method described in any one of claims 14 to 23.

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