WO2019047123A1 - 用于传输数据的方法、终端设备和网络设备 - Google Patents

用于传输数据的方法、终端设备和网络设备 Download PDF

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Publication number
WO2019047123A1
WO2019047123A1 PCT/CN2017/100948 CN2017100948W WO2019047123A1 WO 2019047123 A1 WO2019047123 A1 WO 2019047123A1 CN 2017100948 W CN2017100948 W CN 2017100948W WO 2019047123 A1 WO2019047123 A1 WO 2019047123A1
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Prior art keywords
network device
control information
drb
transmission control
terminal device
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PCT/CN2017/100948
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English (en)
French (fr)
Inventor
唐海
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Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201780049115.1A priority Critical patent/CN109644489B/zh
Priority to AU2017430813A priority patent/AU2017430813A1/en
Priority to JP2020511817A priority patent/JP2020536406A/ja
Priority to PCT/CN2017/100948 priority patent/WO2019047123A1/zh
Priority to KR1020207005458A priority patent/KR20200052270A/ko
Priority to EP17924220.1A priority patent/EP3672128B1/en
Priority to US16/642,006 priority patent/US20200245189A1/en
Publication of WO2019047123A1 publication Critical patent/WO2019047123A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1221—Wireless traffic scheduling based on age of data to be sent
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1614—Details of the supervisory signal using bitmaps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • the embodiments of the present application relate to the field of communications, and, more particularly, to a method, a terminal device, and a network device for transmitting data.
  • NR New Radio
  • a data transfer transmission function of a certain bearer can be dynamically activated or de-activated.
  • multiple network devices may respectively indicate to the terminal device that the copy data function of one of the terminals is activated or deactivated. This may result in different states of the duplicate data functions of different network devices for the same bearer indication. Therefore, there is a need for a method for controlling the replication data transmission function of a certain bearer in the above scenario.
  • the embodiments of the present application provide a method, a terminal device, and a network device for transmitting data, which are beneficial to improving performance of data transmission.
  • a method for transmitting data comprising: acquiring, by a terminal device, first transmission control information of each of a plurality of network devices, the first network device of the plurality of network devices.
  • the first transmission control information is used to indicate that the state of the duplicate data transmission function configured by the first network device for the first data radio bearer DRB is an active state, and the second of the plurality of network devices except the first network device
  • the first transmission control information of the network device is used to indicate that the state of the duplicate data transmission function configured by the second network device for the first DRB is an inactive state
  • the terminal device is configured according to the first transmission control information of the each network device, Determining that the target network device for controlling the duplicate data transmission function of the first DRB is the first network device.
  • the cooperation between the network devices enables the terminal device to determine an effective network device for the replication data transmission function of a certain bearer, which facilitates subsequent control of the replicated data transmission function of the bearer, thereby facilitating the performance of data transmission.
  • the active state of the duplicate data transmission function means that a PDCP entity corresponding to a certain DRB can copy one PDCP PDU into two copies and transmit them on two RLC entities respectively.
  • the inactive state of the copy data transfer function that is, the use of the copy data transfer function, that is, The PDCP PDU transmitted by the PDCP entity corresponding to a DRB is not duplicate data and can be transmitted once in one RLC entity.
  • the second network device is all network devices except the first network device of the plurality of terminal devices, and the plurality of network devices may be all network devices capable of activating or deactivating the corresponding bearers.
  • the method further includes: acquiring, by the terminal device, second transmission control information of the first network device, where the second transmission control information is used to indicate a state of the duplicate data transmission function configured by the first network device for the first DRB; And controlling the duplicate data transmission function of the first DRB according to the second transmission control information.
  • the terminal device controls the copy data transmission function of the first DRB according to the second transmission control information, including: if the state indicated by the second transmission control information is inactive, the control The first DRB transmits non-replicated data; if the state indicated by the second transmission control information is an active state, controlling the first DRB to transmit the duplicated data.
  • the first transmission control information of the first network device indicates, by using a first bit in the bitmap, a state of the duplicate data transmission function configured by the first network device for the first DRB, where The acquiring, by the terminal device, the first transmission control information of each of the plurality of network devices, the terminal device receiving the bitmap sent by the first network device, where the terminal device is in the bitmap and the first DRB The corresponding value of the first bit is determined as the first transmission control information of the first network device.
  • the first transmission control information of the first network device is carried in the medium access control MAC signaling.
  • the multiple network devices include network devices in the primary cell group and network devices in the secondary cell group.
  • a method for transmitting data comprising: determining, by a first network device, that the first network device is used to control a terminal according to interaction with a network device other than the first network device
  • the first data of the device carries the target network device of the replica data transmission function of the DRB; the first network device sends the transmission control information to the terminal device, where the transmission control information is used to indicate that the first network device is configured for the first DRB
  • the state of the replicated data transfer function which is either active or inactive.
  • the transmission control information passes the first bit in the bitmap. Indicates a status of the copy data transmission function configured by the first network device for the first DRB.
  • the first network device is a network device in a primary cell group.
  • a terminal device for performing the method of any of the above first aspect or any of the possible implementations of the first aspect.
  • the terminal device comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.
  • a network device for performing the method of the second aspect or any possible implementation of the first aspect.
  • the network device comprises means for performing the method of any of the above-described second or second aspects of the second aspect.
  • a terminal device comprising: a memory, a processor, an input interface, and an output interface.
  • the memory, the processor, the input interface, and the output interface are connected by a bus system.
  • the memory is for storing instructions for executing the memory stored instructions for performing the method of any of the first aspect or the first aspect of the first aspect.
  • a network device comprising: a memory, a processor, an input interface, and an output interface.
  • the memory, the processor, the input interface, and the output interface are connected by a bus system.
  • the memory is for storing instructions for executing the memory stored instructions for performing the method of any of the above-described second aspect or any of the possible implementations of the second aspect.
  • a computer storage medium for storing the method in any of the above possible implementations of the first aspect or the first aspect, or any possible implementation of the second or second aspect
  • Computer software instructions for use in the method of the present invention which comprise a program designed to perform the above aspects.
  • a computer program product comprising instructions, when executed on a computer, causes the computer to perform the method of any of the first aspect or the optional implementation of the first aspect, or the second Aspect or method of any alternative implementation of the second aspect.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.
  • FIG. 2 shows a protocol architecture diagram of a duplicate data transmission mode in a dual connectivity scenario.
  • FIG. 3 shows a schematic block diagram of a method for transmitting data in an embodiment of the present application.
  • FIG. 4 shows another schematic block diagram of a method for transmitting data in an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of a terminal device for transmitting data according to an embodiment of the present application.
  • FIG. 6 shows a schematic block diagram of a network device for transmitting data according to an embodiment of the present application.
  • FIG. 7 is another schematic block diagram of a terminal device for transmitting data according to an embodiment of the present application.
  • FIG. 8 shows another schematic block diagram of a network device for transmitting data according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the technical solutions of the embodiments of the present application can be applied to various communication systems based on non-orthogonal multiple access technologies, such as a sparse code multiple access (SCMA) system, and a low-density signature (Low). Density Signature (LDS) system, etc., of course, the SCMA system and the LDS system may also be referred to as other names in the communication field; further, the technical solution of the embodiment of the present application can be applied to multi-carrier using non-orthogonal multiple access technology.
  • SCMA sparse code multiple access
  • LDS Density Signature
  • Orthogonal Frequency Division Multiplexing OFDM
  • Filter Bank Multi-Carrier FBMC
  • General Frequency Division Multiplexing Generalized Frequency Division Multiplexing (OFDM)) Frequency Division Multiplexing (GFDM)
  • Filtered Orthogonal Frequency Division Multiplexing Filtered-OFDM, F-OFDM
  • the terminal device in the embodiment of the present application may refer to a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless device.
  • Communication device User agent or user device.
  • the access terminal can be a cellular phone, a cordless phone, or a Session Initiation Protocol (SIP).
  • SIP Session Initiation Protocol
  • WLAN Wireless Local Loop
  • PDA Personal Digital Assistant
  • handheld devices with wireless communication capabilities computing devices or other processing devices connected to wireless modems, in-vehicle devices
  • PLMN public land mobile network
  • the network device may be a device for communicating with the terminal device, where the network device may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB, NB) in the WCDMA system.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • the LTE system may be an evolved base station (Evolutional NodeB, eNB or eNodeB), or may be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station.
  • the embodiment of the present application is not limited, and the access point, the in-vehicle device, the wearable device, and the network device in the future 5G network or the network device in the future evolved PLMN network.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.
  • the network devices around the terminal device 130 in the figure include a primary network device 110 and at least one secondary network device 120.
  • the at least one secondary network device 120 is respectively connected to the primary network device 110 to form a multi-connection, and is respectively connected to the terminal device 130 to provide services thereto.
  • the primary network device 110 can be an LTE network
  • the secondary network device 120 can be an NR network.
  • the primary network device 110 may be an NR network
  • the secondary network device 120 may be an LTE network.
  • both the primary network device 110 and the secondary network device 120 are NR networks.
  • the application scenario of the technical solution is not limited in this application.
  • the terminal device 130 can establish a connection through the primary network device 110 and the secondary network device 120 at the same time.
  • the connection established between the terminal device 130 and the primary network device 110 is a primary connection
  • the connection established between the terminal device 130 and the secondary network device 120 is a secondary connection.
  • the control signaling of the terminal device 130 can be transmitted through the primary connection
  • the data of the terminal device can be transmitted simultaneously through the primary connection and the secondary connection, or can be transmitted only through the secondary connection.
  • the primary network device may be, for example, a macro base station (Macrocell), and the secondary network device may be, for example, a microcell base station (Microcell), a picocell base station (Picocell), or a femtocell base station (Femtocell), but the present invention The embodiment is not limited to this.
  • the primary network device may be an LTE network device, and the secondary network device is an NR network device. It should be understood that the embodiment of the present invention is not limited thereto, and the primary network device may also be a GSM network device, a CDMA network device, or the like.
  • the secondary network device can also be a GSM network device.
  • the CDMA network device and the like are not limited in this embodiment of the present invention.
  • the Packet Data Convergence Protocol can support the data replication function, that is, the PDCP replication data function is used, so that the copied data corresponds to two or more bearers, and finally guaranteed.
  • the duplicated multiple PDCP Protocol Data Units (PDUs) can be transmitted on different physical layer aggregate carriers to achieve frequency diversity gain to improve data transmission reliability.
  • the copy data transmission method adopts a protocol structure using a split bearer.
  • the PDCP is located in a cell group (Cell Group, CG), which is an anchor CG.
  • the CG includes a primary cell group and a secondary cell group, and the PDCP copies the PDCP PDUs into the same.
  • Two copies for example, one is a PDCP PDU, one is a Duplicated PDCP PDU, and two PDCPs are subjected to Radio Link Control (RLC), Media Access Control (MAC), and Media Access Control (MAC) of different CGs.
  • RLC Radio Link Control
  • MAC Media Access Control
  • MAC Media Access Control
  • the PDCP layer After the air interface reaches the terminal (downlink) or the corresponding MAC of the base station (uplink), the RLC layer, and finally aggregates to the PDCP, the PDCP layer detects that the two PDCPs are the same duplicate version, that is, discards one of them and delivers the other to the upper layer.
  • the one bearer that connects the two RLCs and the MACs respectively under the PDCP is called a split bearer.
  • a MAC-control element (Control Element, CE) can be used to dynamically activate or de-activate a data transfer of a bearer. Transfer function.
  • the network device of the primary cell group and the network device of the secondary cell group may respectively send a MAC CE to activate or deactivate the replication data function of one of the split bearers of the terminal. This may cause the network devices of the different primary cell groups and the network devices of the secondary cell group to indicate different states for the copy data function of one of the split bearers of the terminal. For example, the network device of the primary cell group indicates that the replication of the split bearer is activated.
  • the data function, and the network device of the secondary cell group instructs to activate the copy data function of the split bearer. Therefore, how the terminal device controls the copy data function of the split bearer in combination with the configuration of the copy data function of the same split bearer by the plurality of network devices is a problem to be solved.
  • FIG. 3 shows a schematic block diagram of a method 200 for transmitting data in an embodiment of the present application. As shown in FIG. 3, the method 200 includes the following parts or all of the contents:
  • the terminal device acquires first transmission control information of each of the plurality of network devices, where the first transmission control information of the first network device of the plurality of network devices is used to indicate that the first network device is The state of the duplicate data transmission function of the first data radio bearer DRB configuration is an active state, and the first transmission control information of the second network device other than the first network device of the plurality of network devices is used to indicate the The state of the duplicate data transmission function configured by the second network device for the first DRB is an inactive state;
  • the terminal device determines, according to the first transmission control information of each network device, that the target network device that controls the replication data transmission function of the first DRB is the first network device.
  • the network devices can cooperate to control the replication data transmission function of a certain bearer of the terminal device through Xn interface cooperation. That is to say, the network device can negotiate in advance which network devices are responsible for controlling which bearer's duplicate data transmission functions.
  • the data radio bearer (DRB) identification (ID) of the terminal device is 1, 3, 4, and 7 respectively having a duplicate data transmission function.
  • the network side (assuming that the network device of one primary cell group and the network device of one secondary cell group) can cooperate to enable the network device of the primary cell group to be responsible for turning on or off the replication data transmission function of the DRBs with DRB IDs 1 and 3.
  • the network device of the secondary cell group is responsible for turning on or off the replication data transmission function of the DRBs with DRB IDs 4 and 7.
  • the status indication of the duplicate data transmission function for the DRB ID of 1 sent by the network device of the primary cell group to the terminal device may be on or off, and the network device sent by the secondary cell group to the terminal device is for the DRBID.
  • the status indication of the copy data transfer function of 1 can only be turned off.
  • the terminal device may determine that the network device is an effective network device that controls the duplicate data transmission function with the DRB ID of 1, so that the terminal device receives the subsequent
  • the status indication of the duplicate data transmission function indicating that the DRB ID is 1, may be controlled according to the indication of the other network device, and only needs to control the duplicate data transmission function with the DRB ID of 1 according to the determined indication of the effective network device.
  • the method for transmitting data in the embodiment of the present application enables the terminal device to determine an effective network device for a replica data transmission function of a certain bearer by cooperation between the network devices, thereby facilitating subsequent control of the replicated data of the bearer. Transmission function, which in turn facilitates data transmission performance.
  • the active state of the duplicate data transmission function means that the PDCP entity corresponding to a certain DRB can copy one PDCP PDU into two copies and transmit them on two RLC entities respectively.
  • the inactive state of the duplicate data transmission function that is, the copy data transmission function is not used, that is, the PDCP PDU transmitted by the PDCP entity corresponding to a certain DRB is not a duplicate data, and can be transmitted once in one RLC entity.
  • the second network device in the embodiment of the present application is all network devices except the first network device among the multiple terminal devices, and the multiple network devices may be all networks capable of activating or deactivating the corresponding bearers. device.
  • the acquiring the first transmission control information of the network device may be the first transmission control information directly received from the network device, or may be the network device saved in the terminal device.
  • the status of the replicated data transfer feature that was previously configured for a bearer may be the first transmission control information directly received from the network device, or may be the network device saved in the terminal device.
  • the dual connectivity mentioned in the embodiment of the present application may also be a multi-connection. Although the full text is described by taking a dual connection as an example, the embodiment of the present application does not limit this.
  • the terminal device may maintain a control variable for each split bearer configured with the duplicate data transmission function, and the terminal device may simultaneously receive the indication information sent by the primary network device and the secondary network device at a certain time, the indication information.
  • the terminal device receives 1 from the primary network device, and 0 from the secondary network device, where 1 can indicate that the replicated data transmission function configured for a split bearer is active.
  • 0 indicates that the duplicate data transmission function configured for the corresponding split bearer is inactive, and the terminal device can directly update the control variable to 10, and the terminal device can directly control the copy data transmission function of the corresponding split bearer according to 10, wherein the The initial value of the control variable can be 00.
  • the terminal device may also receive the indication information sent by the primary network device and the secondary network device at different times, and the terminal device may first copy the data of the corresponding split bearer after receiving the indication information sent by the network device.
  • the transmission function is not changed until the terminal device receives the indication information sent by another network device, and then updates the control variable together, and controls the copy data transmission function of the corresponding split bearer according to the updated control variable.
  • the terminal device may also update the control variable after receiving the indication information sent by the network device, and directly control the copy data transmission function of the corresponding split bearer according to the updated control variable, wherein the control variable may have Initial values, for example, the initial value of the control variable Can be 00.
  • the terminal device controls the copy data transmission function of the first DRB according to the updated control variable, including: the terminal device according to the updated control variable and the first mapping relationship a table, determining a target state of the copy data transmission function of the first DRB, where the first mapping relationship table includes a mapping relationship between the plurality of state combinations and the plurality of target states, each state of the state combination and the plurality of network devices One-to-one correspondence; the terminal device controls the copy data transmission function of the first DRB according to the target state.
  • the terminal device may save, in advance, a mapping relationship table for each split bearer configured with a duplicate data transmission function, where the mapping relationship table may include all network devices capable of activating or deactivating the corresponding bearer, and may copy the corresponding split bearer.
  • the various state combinations of the data transfer function configuration and the various state combinations should be placed in the target state of the corresponding split bearer's copy data transfer function.
  • the control variable after the terminal device is updated is also a combination of states.
  • the terminal device can find the corresponding mapping relationship table according to the updated control variable, and can find the corresponding target state, and then directly control the corresponding split bearer according to the target state. Copy data transfer function. Taking one bit as a representative of the state of a network device's copy data transmission function for a split bearer, the mapping table for a split bearer may be Table 1:
  • the updated control variable may only be 00, 01 or 00, 10.
  • the state combination in the stored mapping table may include three state combinations of 00, 01 and 10.
  • the method further includes: acquiring, by the terminal device, second transmission control information of the first network device, where the second transmission control information is used to indicate a state of the duplicate data transmission function configured by the first network device for the first DRB; The terminal device controls the duplicate data transmission function of the first DRB according to the second transmission control information.
  • the terminal device can subsequently control the duplicate data transmission function of the corresponding bearer only according to the indication sent by the determined network device.
  • the terminal device controls the copy data transmission function of the first DRB according to the second transmission control information, including: if the status indicated by the second transmission control information is inactive And controlling the first DRB to transmit non-replicated data; if the state indicated by the second transmission control information is an active state, controlling the first DRB to transmit the duplicated data.
  • the first transmission control information of the first network device indicates, by using a first bit in the bitmap, a state of the duplicate data transmission function configured by the first network device for the first DRB And acquiring, by the terminal device, the first transmission control information of each of the plurality of network devices, including: receiving, by the terminal device, the bitmap sent by the first network device; The value of the first bit corresponding to a DRB is determined as the first transmission control information of the first network device.
  • the current NR discussion has agreed to indicate to the terminal device that the terminal device has a DRB that replicates the data transmission function by a bitmap bitmap, and the bitmap is 1 byte.
  • the locations in different bitmaps correspond to different bearer identifiers (identifications, IDs) of the terminals.
  • the bearers indicated by these bearer IDs are bearers configured with the copy data transmission function.
  • the bearer ID of the terminal is 0, 2, 3, 7, 8, 10 is a bearer with a duplicate data transmission function, and the corresponding relationship is that the first bit of the bitmap terminal corresponds to the bearer ID 0, and the second bit corresponds to the bearer ID 2,
  • the third digit corresponds to the bearer ID 3
  • the fourth digit corresponds to the bearer ID 7
  • the fifth digit corresponds to the bearer ID 8
  • the sixth digit corresponds to the bearer ID 10
  • the seventh digit and the eighth digit are invalid bits.
  • the corresponding relationship may be an ascending correspondence or a descending correspondence.
  • the MAC of the terminal device may indicate the corresponding bit in the bitmap to the PDCP of the corresponding DRB. Specifically, the terminal device can find the corresponding bit position of the DRB ID in the bitmap according to the correspondence between the bitmap and the DRB ID. For example, the network device has the DRB ID with the duplicate data transmission function as 1, 3, 4, and 7 respectively corresponding to the bitmap. 1, 2, 3, 4 places.
  • the MAC of the terminal device may indicate the value of the first bit to the PDCP with the DRB ID being 1, the value of the second bit to the PDCP with the DRB ID being 3, and so on.
  • the transmission control information is carried in the medium access control MAC signaling.
  • indication information of the embodiments of the present application may also pass other signalings than the MAC layer signaling mentioned above, such as Download Control Information (DCI).
  • DCI Download Control Information
  • the foregoing multiple network devices are described by using a network device of a primary cell group and a network device of a secondary cell group as an example.
  • the embodiment of the present application is not limited thereto.
  • the multiple network devices may be A network device of a primary cell group and a network device of a plurality of secondary cell groups.
  • one bit in the above bitmap represents the state of a bearer's copy data transmission function.
  • the embodiment of the present application should not be limited. For example, two bits may also be used to represent the state of a bearer copy data transmission function.
  • FIG. 4 shows a schematic block diagram of a method 300 for transmitting data in an embodiment of the present application. As shown in FIG. 4, the method 300 includes the following parts or all of the contents:
  • the first network device determines, according to interaction with a network device other than the first network device, that the first network device is a target of a copy data transmission function for controlling a first data radio bearer DRB of the terminal device.
  • Network equipment
  • the first network device sends, to the terminal device, transmission control information, where the transmission control information is used to indicate a state of the copy data transmission function configured by the first network device for the first DRB, where the state Is active or inactive.
  • the method for transmitting data in the embodiment of the present application enables the terminal device to determine an effective network device for a replica data transmission function of a certain bearer by cooperation between the network devices, thereby facilitating subsequent control of the replicated data of the bearer.
  • the transmission function facilitates the performance of data transmission.
  • the transmission control information indicates, by using a first bit in the bitmap, a state of the duplicate data transmission function configured by the first network device for the first DRB.
  • the first network device is a network device in a primary cell group.
  • FIG. 5 shows a schematic block diagram of a terminal device 400 of an embodiment of the present application.
  • the terminal device 400 includes:
  • the acquiring unit 410 is configured to acquire first transmission control information of each of the plurality of network devices, where the first transmission control information of the first network device of the plurality of network devices is used to indicate the first network
  • the state of the duplicate data transmission function configured by the device for the first data radio bearer DRB is an active state
  • the first transmission control information of the second network device except the first network device of the plurality of network devices is used to indicate The state of the duplicate data transmission function configured by the second network device for the first DRB is an inactive state
  • the determining unit 420 is configured to determine, according to the first transmission control information of each network device, that the target network device that controls the duplicate data transmission function of the first DRB is the first network device.
  • the terminal device in the embodiment of the present application enables the terminal device to determine an effective network device for the replication data transmission function of a certain bearer by cooperation between the network devices, thereby facilitating subsequent control of the replication data transmission function of the bearer, and further Conducive to the performance of data transmission.
  • the acquiring unit is further configured to: after obtaining the first transmission control information of the first network device, acquire a second transmission control of the first network device Information, the second transmission control information is used to indicate a state of the copy data transmission function configured by the first network device for the first DRB, and the terminal device further includes: a control unit, according to the second Transmitting control information to control a copy data transmission function of the first DRB.
  • control unit is specifically configured to: if the state indicated by the second transmission control information is an inactive state, control the first DRB to transmit non-replicated data;
  • the state indicated by the second transmission control information is an active state, and the first DRB is controlled to transmit the copy data.
  • the first transmission control information of the first network device indicates, by using a first bit in the bitmap, that the first network device is configured to perform replication data transmission for the first DRB.
  • the acquiring unit is specifically configured to: receive the bitmap sent by the first network device; and use the first bit in the bitmap that corresponds to the first DRB The value is determined as the first transmission control information of the first network device.
  • the first transmission control information of the first network device is carried in the medium access control MAC signaling.
  • terminal device 400 may correspond to the terminal device in the method embodiment of the present application, and the foregoing and other operations and/or functions of the respective units in the terminal device 400 respectively implement the terminal in the method of FIG.
  • the corresponding process of the device is not described here for brevity.
  • FIG. 6 shows a schematic block diagram of a network device 500 of an embodiment of the present application.
  • the network device is a first network device.
  • the network device 500 includes:
  • a determining unit 510 configured to determine, according to interaction with a network device other than the first network device, that the first network device is a target of a copy data transmission function for controlling a first data radio bearer DRB of the terminal device Network equipment;
  • the sending unit 520 is configured to send, to the terminal device, transmission control information, where the transmission control information is used to indicate a status of the copy data transmission function configured by the first network device for the first DRB, where the status is activated. Status or inactive state.
  • the network device in the embodiment of the present application enables the terminal device to determine an effective network device for the replication data transmission function of a certain bearer by cooperation between the network devices, thereby facilitating subsequent control of the replication data transmission function of the bearer. Conducive to the performance of data transmission.
  • the transmission control information indicates, by using a first bit in the bitmap, a state of the duplicate data transmission function configured by the first network device for the first DRB.
  • the first network device is a network device in a primary cell group.
  • the network device 500 may correspond to the network device in the method embodiment of the present application, and the foregoing and other operations and/or functions of the respective units in the network device 500 respectively implement the network in the method of FIG.
  • the corresponding process of the device is not described here for brevity.
  • the embodiment of the present application further provides a terminal device 600, which may be the terminal device 400 in FIG. 5, which can be used to execute the content of the terminal device corresponding to the method 100 in FIG. .
  • the terminal device 600 includes an input interface 610, an output interface 620, a processor 630, and a memory 640.
  • the input interface 610, the output interface 620, the processor 630, and the memory 640 can be connected through a bus system.
  • the memory 640 is used to store programs, instructions or code.
  • the processor 630 is configured to execute a program, an instruction, or a code in the memory 640 to control
  • the input interface 610 receives the signals, controls the output interface 620 to transmit signals, and performs the operations in the foregoing method embodiments.
  • the terminal device in the embodiment of the present application enables the terminal device to determine an effective network device for the replication data transmission function of a certain bearer by cooperation between the network devices, thereby facilitating subsequent control of the replication data transmission function of the bearer, and further Conducive to the performance of data transmission.
  • the processor 630 may be a central processing unit (CPU), and the processor 630 may also be other general-purpose processors, digital signal processors, application specific integrated circuits, and ready-made Program gate arrays or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and more.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 640 can include read only memory and random access memory and provides instructions and data to the processor 630. A portion of the memory 640 can also include a non-volatile random access memory. For example, the memory 640 can also store information of the device type.
  • each content of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 630 or an instruction in a form of software.
  • the content of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 640, and the processor 630 reads the information in the memory 640 and combines the hardware to complete the contents of the above method. To avoid repetition, it will not be described in detail here.
  • the obtaining unit, the determining unit, and the control unit in the terminal device 400 may be implemented by the processor 630 in FIG.
  • the embodiment of the present application further provides a network device 700, which may be the network device 500 in FIG. 6, which can be used to execute the content of the network device corresponding to the method 200 in FIG. .
  • the network device 700 includes an input interface 710, an output interface 720, a processor 730, and a memory 740.
  • the input interface 710, the output interface 720, the processor 730, and the memory 740 can be connected by a bus system.
  • the memory 740 is for storing programs, instructions or code.
  • the processor 730 is configured to execute a program, an instruction or a code in the memory 740 to control the input interface 710 to receive a signal, control the output interface 720 to transmit a signal, and complete the operations in the foregoing method embodiments.
  • the network device in the embodiment of the present application makes the terminal set by cooperation between the network devices.
  • the device can determine the effective network device for the replication data transmission function of a certain bearer, and is beneficial to the subsequent control of the replication data transmission function of the bearer, thereby facilitating the performance of data transmission.
  • the processor 730 may be a central processing unit (CPU), and the processor 730 may also be other general-purpose processors, digital signal processors, application specific integrated circuits, and ready-made Program gate arrays or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and more.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 740 can include read only memory and random access memory and provides instructions and data to the processor 730. A portion of the memory 740 can also include a non-volatile random access memory. For example, the memory 740 can also store information of the device type.
  • each content of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 730 or an instruction in a form of software.
  • the content of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 740, and the processor 730 reads the information in the memory 740 and combines its hardware to perform the contents of the above method. To avoid repetition, it will not be described in detail here.
  • the transmitting unit in network device 500 can be implemented by output interface 720 in FIG. 8, and the determining unit in network device 400 can be implemented by processor interface 730 in FIG.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division, and may be implemented in actual implementation.
  • There are additional ways of dividing for example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • This functionality if implemented as a software functional unit and sold or used as a standalone product, can be stored on a computer readable storage medium.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.

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Abstract

本申请实施例公开了一种用于传输数据的方法、终端设备和网络设备，该方法包括：终端设备获取多个网络设备中的每个网络设备的第一传输控制信息，该多个网络设备中的第一网络设备的第一传输控制信息用于指示该第一网络设备为第一数据无线承载DRB配置的复制数据传输功能的状态为激活态，该多个网络设备中除该第一网络设备之外的第二网络设备的第一传输控制信息用于指示该第二网络设备为该第一DRB配置的复制数据传输功能的状态为非激活态；该终端设备根据该每个网络设备的第一传输控制信息，确定用于控制第一DRB的复制数据传输功能的目标网络设备为该第一网络设备。本申请实施例的方法、终端设备和网络设备，有利于提高数据传输的性能。

Description

用于传输数据的方法、终端设备和网络设备 技术领域
本申请实施例涉及通信领域，并且更具体地，涉及一种用于传输数据的方法、终端设备和网络设备。
背景技术
在新无线(New Radio，NR)现有的讨论中，对于配置了复制数据传输功能的承载，可以动态的激活(activate)或者去激活(de-activate)某一个承载的数据复制传输功能。对于多连接的情况，多个网络设备可以分别向终端设备指示激活或者去激活终端某一个承载的复制数据功能。这就有可能导致不同网络设备针对同一个承载指示的复制数据功能的状态不同，因此亟待需要一种方法在上述场景下来控制某个承载的复制数据传输功能。
发明内容
有鉴于此，本申请实施例提供了一种用于传输数据的方法、终端设备和网络设备，有利于提高数据传输的性能。
第一方面，提供了一种用于传输数据的方法，该方法包括：终端设备获取多个网络设备中的每个网络设备的第一传输控制信息，该多个网络设备中的第一网络设备的第一传输控制信息用于指示该第一网络设备为第一数据无线承载DRB配置的复制数据传输功能的状态为激活态，该多个网络设备中除该第一网络设备之外的第二网络设备的第一传输控制信息用于指示该第二网络设备为该第一DRB配置的复制数据传输功能的状态为非激活态；该终端设备根据该每个网络设备的第一传输控制信息，确定用于控制第一DRB的复制数据传输功能的目标网络设备为该第一网络设备。
通过网络设备之间的协作使得终端设备能够确定出来针对某一承载的复制数据传输功能的有效网络设备，有利于后续控制该承载的复制数据传输功能，进而有利于数据传输的性能。
所谓复制数据传输功能的激活状态，是指与某个DRB对应的PDCP实体可以将一个PDCP PDU复制成两份，并分别在两个RLC实体上进行传输。而复制数据传输功能的非激活状态，也就是不使用复制数据传输功能，即与 某个DRB对应的PDCP实体传输的PDCP PDU不是复制数据，可以在一个RLC实体中传输一次。
第二网络设备即该多个终端设备中除第一网络设备之外的所有网路设备，该多个网络设备可以是能够激活或去激活相应承载的所有网络设备。
在一种可能的实现方式中，在该终端设备根据该每个网络设备的传输控制信息，确定用于控制第一DRB的复制数据传输功能的目标网络设备为该第一网络设备之后，该方法还包括：该终端设备获取该第一网络设备的第二传输控制信息，该第二传输控制信息用于指示该第一网络设备为该第一DRB配置的复制数据传输功能的状态；该终端设备根据该第二传输控制信息，控制该第一DRB的复制数据传输功能。
在一种可能的实现方式中，该终端设备根据该第二传输控制信息，控制该第一DRB的复制数据传输功能，包括：若该第二传输控制信息指示的该状态为非激活态，控制该第一DRB传输非复制数据；若该第二传输控制信息指示的该状态为激活态，控制该第一DRB传输复制数据。
在一种可能的实现方式中，该第一网络设备的第一传输控制信息通过比特图中的第一比特位指示该第一网络设备为该第一DRB配置的复制数据传输功能的状态，该终端设备获取多个网络设备中的每个网络设备的第一传输控制信息，包括：该终端设备接收该第一网络设备发送的该比特图；该终端设备将该比特图中与该第一DRB对应的该第一比特位的值确定为该第一网络设备的第一传输控制信息。
在一种可能的实现方式中，该第一网络设备的第一传输控制信息承载于媒体接入控制MAC信令中。
在一种可能的实现方式中，该多个网络设备包括主小区组内的网络设备和辅小区组内的网络设备。
第二方面，提供了一种用于传输数据的方法，该方法包括：第一网络设备根据与除该第一网络设备之外的网络设备的交互，确定该第一网络设备为用于控制终端设备的第一数据无线承载DRB的复制数据传输功能的目标网络设备；该第一网络设备向该终端设备发送传输控制信息，该传输控制信息用于指示该第一网络设备为该第一DRB配置的复制数据传输功能的状态，该状态为激活状态或非激活状态。
在一种可能的实现方式中，该传输控制信息通过比特图中的第一比特位 指示该第一网络设备为该第一DRB配置的复制数据传输功能的状态。
在一种可能的实现方式中，该第一网络设备为主小区组内的网络设备。
第三方面，提供了一种终端设备，用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。具体地，该终端设备包括用于执行上述第一方面或第一方面的任意可能的实现方式中的方法的单元。
第四方面，提供了一种网络设备，用于执行上述第二方面或第一方面的任意可能的实现方式中的方法。具体地，该网络设备包括用于执行上述第二方面或第二方面的任意可能的实现方式中的方法的单元。
第五方面，提供了一种终端设备，该终端设备包括：存储器、处理器、输入接口和输出接口。其中，存储器、处理器、输入接口和输出接口通过总线系统相连。该存储器用于存储指令，该处理器用于执行该存储器存储的指令，用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。
第六方面，提供了一种网络设备，该网络设备包括：存储器、处理器、输入接口和输出接口。其中，存储器、处理器、输入接口和输出接口通过总线系统相连。该存储器用于存储指令，该处理器用于执行该存储器存储的指令，用于执行上述第二方面或第二方面的任意可能的实现方式中的方法。
第七方面，提供了一种计算机存储介质，用于储存为执行上述第一方面或第一方面的任意可能的实现方式中的方法，或者上述第二方面或第二方面的任意可能的实现方式中的方法所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
第八方面，提供了一种包括指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面或第一方面的任一可选的实现方式中的方法，或者上述第二方面或第二方面的任一可选的实现方式中的方法。
本申请的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
附图说明
图1示出了本申请实施例一个应用场景的示意图。
图2示出了双连接场景下的复制数据传输方式的协议架构图。
图3示出了本申请实施例的用于传输数据的方法的示意性框图。
图4示出了本申请实施例的用于传输数据的方法的另一示意性框图。
图5示出了本申请实施例的用于传输数据的终端设备的示意性框图。
图6示出了本申请实施例的用于传输数据的网络设备的示意性框图。
图7示出了本申请实施例的用于传输数据的终端设备的另一示意性框图。
图8示出了本申请实施例的用于传输数据的网络设备的另一示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。
应理解，本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、LTE系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统、新无线(New Radio，NR)或未来的5G系统等。
特别地，本申请实施例的技术方案可以应用于各种基于非正交多址接入技术的通信系统，例如稀疏码多址接入(Sparse Code Multiple Access，SCMA)系统、低密度签名(Low Density Signature，LDS)系统等，当然SCMA系统和LDS系统在通信领域也可以被称为其他名称；进一步地，本申请实施例的技术方案可以应用于采用非正交多址接入技术的多载波传输系统，例如采用非正交多址接入技术正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)、滤波器组多载波(Filter Bank Multi-Carrier，FBMC)、通用频分复用(Generalized Frequency Division Multiplexing，GFDM)、滤波正交频分复用(Filtered-OFDM，F-OFDM)系统等。
本申请实施例中的终端设备可以指用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP) 电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(Public Land Mobile Network，PLMN)中的终端设备等，本申请实施例并不限定。
本申请实施例中网络设备可以是用于与终端设备通信的设备，该网络设备可以是GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional NodeB，eNB或eNodeB)，还可以是云无线接入网络(Cloud Radio Access Network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等，本申请实施例并不限定。
图1是本申请实施例的一个应用场景的示意图。图·中的终端设备130周围的网络设备包括主网络设备110和至少一个辅网络设备120。该至少一个辅网络设备120分别与主网络设备110相连，构成多连接，并分别与终端设备130连接为其提供服务。该主网络设备110可以为LTE网络，该辅网络设备120可以为NR网络。或者该主网络设备110可以为NR网络，该辅网络设备120可以为LTE网络。或者该主网络设备110和该辅网络设备120都为NR网络。本申请对技术方案的应用场景不作限定。终端设备130可以通过主网络设备110和辅网络设备120同时建立连接。终端设备130和主网络设备110建立的连接为主连接，终端设备130与辅网络设备120建立的连接为辅连接。终端设备130的控制信令可以通过主连接进行传输，而终端设备的数据可以通过主连接和辅连接同时传输，也可以只通过辅连接进行传输。
在本申请实施例中，主网络设备例如可以是宏基站(Macrocell)，辅网络设备例如可以为微蜂窝基站(Microcell)、微微蜂窝基站(Picocell)、毫微微蜂窝基站(Femtocell)，但本发明实施例不限于此。
更具体地，该主网络设备可以为LTE网络设备，该辅网络设备为NR网络设备，应理解，本发明实施例并不限于此，该主网络设备还可以为GSM网络设备，CDMA网络设备等，该辅网络设备也可以为GSM网络设备， CDMA网络设备等，本发明实施例对此不作限制。
在载波聚合场景下，分组数据汇聚层协议(Packet Data Convergence Protocol，PDCP)可以支持数据复制功能，即利用PDCP的复制数据功能，从而使复制的数据对应到两个或者多个承载，并最终保证复制的多个相同PDCP协议数据单元(Protocol Data Unit，PDU)能够在不同物理层聚合载波上面传输，从而达到频率分集增益以提高数据传输可靠性。
为了便于理解，下面将结合图2简单介绍在双连接场景下的复制数据传输方式的协议架构。复制数据传输方式采用采用的是分裂承载(split bearer)的协议架构。对于上下行来讲，PDCP位于某一个小区组(Cell Group，CG)，该CG即为锚小区组(anchor CG)，其中CG包括主小区组和辅小区组，PDCP将PDCP PDU复制为相同的两份，比如一个是PDCP PDU，一个是复制(Duplicated)PDCP PDU，两个PDCP经过不同CG的无线链路控制(Radio Link Control，RLC)，媒体接入控制(Media Access Control，MAC)，再经过空口到达终端(下行)或者基站(上行)相应的MAC，RLC层，最后再汇聚到PDCP，PDCP层监测到两个PDCP为相同的复制版本，即丢弃其中一个，将另外一个递交到高层。将PDCP下面分别连接两个RLC和MAC的这一个承载称为split bearer。
在NR现有的讨论中，对于配置了复制数据传输功能的无线承载，可以通过MAC控制元素(Control Element，CE)动态的激活(activate)或者去激活(de-activate)某一个承载的数据复制传输功能。对于双连接的场景，主小区组的网络设备和辅小区组的网络设备可以分别发送MAC CE来激活或者去激活终端某一个split bearer的复制数据功能。这就可能导致不同主小区组的网络设备和辅小区组的网络设备针对终端的某一个split bearer的复制数据功能指示了不同的状态，例如，主小区组的网络设备指示激活该split bearer的复制数据功能，而辅小区组的网络设备指示去激活该split bearer的复制数据功能。因此，终端设备如何结合多个网络设备针对同一split bearer的复制数据功能的配置来控制该split bearer的复制数据功能是需要解决的问题。
应理解，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种 “或”的关系。
图3示出了本申请实施例的用于传输数据的方法200的示意性框图。如图3所示，该方法200包括以下部分内容或全部内容：
S210，终端设备获取多个网络设备中的每个网络设备的第一传输控制信息，所述多个网络设备中的第一网络设备的第一传输控制信息用于指示所述第一网络设备为第一数据无线承载DRB配置的复制数据传输功能的状态为激活态，所述多个网络设备中除所述第一网络设备之外的第二网络设备的第一传输控制信息用于指示所述第二网络设备为所述第一DRB配置的复制数据传输功能的状态为非激活态；
S220，所述终端设备根据所述每个网络设备的第一传输控制信息，确定用于控制第一DRB的复制数据传输功能的目标网络设备为所述第一网络设备。
具体地，网络设备之间可以通过Xn接口协作来控制终端设备某个承载的复制数据传输功能。也就是说，网络设备可以提前协商好哪些网络设备负责控制哪些承载的复制数据传输功能。举例来说，终端设备的数据无线承载(Data Radio Bearer，DRB)标识(identify，ID)为1，3，4，7分别具有复制数据传输功能。网络侧(假设为一个主小区组的网络设备和一个辅小区组的网络设备)通过协作，可以使主小区组的网络设备负责DRB ID为1和3的DRB的复制数据传输功能的开启或关闭，使辅小区组的网络设备负责DRB ID为4和7的DRB的复制数据传输功能的开启或关闭。也就是说，主小区组的网络设备向终端设备发送的针对DRB ID为1的复制数据传输功能的状态指示可以是开启或者关闭，而辅小区组的网络设备向终端设备发送的针对该DRBID为1的复制数据传输功能的状态指示只能是关闭。当终端设备一旦接收到一个网络设备发送的状态指示为开启，那么终端设备就可以确定该网络设备为控制DRB ID为1的复制数据传输功能的有效网络设备，这样的话，终端设备在后续接收到指示该DRB ID为1的复制数据传输功能的状态指示，可以不考虑其他网络设备的指示，只需要根据确定的有效网络设备的指示来控制该DRB ID为1的复制数据传输功能。
因此，本申请实施例的用于传输数据的方法，通过网络设备之间的协作使得终端设备能够确定出来针对某一承载的复制数据传输功能的有效网络设备，有利于后续控制该承载的复制数据传输功能，进而有利于数据传输的 性能。
所谓复制数据传输功能的激活状态，是指与某个DRB对应的PDCP实体可以将一个PDCP PDU复制成两份，分别在两个RLC实体上进行传输。而复制数据传输功能的非激活状态，也就是不使用复制数据传输功能，即与某个DRB对应的PDCP实体传输的PDCP PDU不是复制数据，可以在一个RLC实体中传输一次。
应理解，本申请实施例中的第二网络设备即该多个终端设备中除第一网络设备之外的所有网路设备，该多个网络设备可以是能够激活或去激活相应承载的所有网络设备。
可选地，在本申请实施例中，所谓获取某个网络设备的第一传输控制信息，可以是从网络设备处直接接收的该第一传输控制信息，也可以是终端设备内保存的网络设备之前为某个承载配置的复制数据传输功能的状态。
本领域技术人员理解，本申请实施例中提及的双连接也可以是多连接，虽然全文多处是以双连接为例进行描述的，但本申请实施例对此不构成限定。
可选地，终端设备可以为每一个配置有复制数据传输功能的split bearer维护一个控制变量，终端设备可能在某一时刻同时收到主网络设备和辅网络设备分别发送的指示信息，该指示信息以一个比特位为例，在某个时刻终端设备收到主网络设备发送的为1，辅网络设备发送的为0，其中1可以表示为某一split bearer配置的复制数据传输功能为激活态，而0可以表示为相应split bearer配置的复制数据传输功能为非激活态，那么终端设备可以直接将控制变量更新为10，终端设备可以直接根据10来控制相应split bearer的复制数据传输功能，其中该控制变量的初始值可以是00。
可选地，终端设备也可以在不同时刻收到主网络设备和辅网络设备发别发送的指示信息，终端设备可以在收到一个网络设备发送的指示信息后，先对相应split bearer的复制数据传输功能不作改变，一直到终端设备收到另一个网路设备发送的指示信息后，一起更新控制变量，并根据更新的控制变量来控制相应split bearer的复制数据传输功能。
可选地，终端设备也可以在收到一个网络设备发送的指示信息后就更新控制变量，并根据更新后的控制变量直接来控制相应split bearer的复制数据传输功能，其中，该控制变量可以有个初始值，例如，该控制变量的初始值 可以为00。
可选地，在本申请实施例中，该终端设备根据更新后的该控制变量，控制该第一DRB的复制数据传输功能，包括：该终端设备根据更新后的该控制变量和第一映射关系表，确定该第一DRB的复制数据传输功能的目标状态，该第一映射关系表包括多个状态组合与多个目标状态的映射关系，该状态组合中的每个状态与该多个网络设备一一对应；该终端设备根据该目标状态，控制该第一DRB的复制数据传输功能。
具体地，终端设备可以提前针对每一个配置有复制数据传输功能的split bearer保存一种映射关系表，该映射关系表可以包括能够激活或去激活相应承载的所有网络设备可能将相应split bearer的复制数据传输功能配置的各种状态组合以及各种状态组合下应该将相应split bearer的复制数据传输功能置于何种目标状态。终端设备更新后的控制变量也即一种状态组合，终端设备可以根据更新后的控制变量查找相应的映射关系表，就可以查找出对应的目标状态，进而就可以根据目标状态直接控制相应split bearer的复制数据传输功能。以一个比特位代表一个网络设备对一个split bearer的复制数据传输功能的状态为例，针对某一split bearer的映射关系表可以是表1：
表1
主网络设备 辅网络设备 目标状态
0 0 非激活
0 1 激活
1 0 激活
应理解，由于主网络设备和辅网络设备已经协商好了有效的网络设备，那么更新后的控制变量只可能是00，01或00，10。对于终端设备来讲，一开始根本就不知道哪个网络设备是有效的网络设备，因此存储的映射表中的状态组合可以包括00，01和10这三种状态组合。
可选地，在本申请实施例中，在该终端设备根据该每个网络设备的传输控制信息，确定用于控制第一DRB的复制数据传输功能的目标网络设备为该第一网络设备之后，该方法还包括：该终端设备获取该第一网络设备的第二传输控制信息，该第二传输控制信息用于指示该第一网络设备为该第一DRB配置的复制数据传输功能的状态；该终端设备根据该第二传输控制信息，控制该第一DRB的复制数据传输功能。
上述也提及到，一旦终端设备确定控制某个承载复制数据传输功能的网络设备，终端设备后续就可以只根据该确定的网络设备发送的指示来控制相应承载的复制数据传输功能。
可选地，在本申请实施例中，该终端设备根据该第二传输控制信息，控制该第一DRB的复制数据传输功能，包括：若该第二传输控制信息指示的该状态为非激活态，控制该第一DRB传输非复制数据；若该第二传输控制信息指示的该状态为激活态，控制该第一DRB传输复制数据。
可选地，在本申请实施例中，该第一网络设备的第一传输控制信息通过比特图中的第一比特位指示该第一网络设备为该第一DRB配置的复制数据传输功能的状态，该终端设备获取多个网络设备中的每个网络设备的第一传输控制信息，包括：该终端设备接收该第一网络设备发送的该比特图；该终端设备将该比特图中与该第一DRB对应的该第一比特位的值确定为该第一网络设备的第一传输控制信息。
现在的NR讨论已经同意通过一个比特图bitmap来指示终端设备具有复制数据传输功能的DRB，且该bitmap为1字节(byte)。不同的bitmap中的位置分别对应终端不同bearer标识(identify，ID)，这些bearer ID标示的bearer是配置了复制数据传输功能的bearer。比如终端的bearer ID为0，2，3，7，8，10为具有复制数据传输功能的bearer，一种对应关系为bitmap终端的第一位对应bearer ID 0，第二位对应bearer ID 2，第三位对应bearer ID 3，第四位对应bearer ID 7，第五位对应bearer ID 8，第六位对应bearer ID 10，第7位和第8为为无效位。这种对应关系可以为升序对应关系，也可以为降序对应关系。
终端设备的MAC在接收到某个网络设备发送的bitmap之后，可以把bitmap中相应bit位指示给对应DRB的PDCP。具体地，终端设备可以根据bitmap与DRB ID的对应关系，找到DRB ID在bitmap中的对应bit位，比如网络设备将具有复制数据传输功能的DRB ID为1，3，4，7分别对应bitmap中的1，2，3，4位。则终端设备的MAC在收到bitmap之后，可以将把第一位的值指示给DRB ID为1的PDCP，把第二位的值指示给DRB ID为3的PDCP，以此类推。
可选地，在本申请实施例中，传输控制信息承载于媒体接入控制MAC信令中。
应理解，本申请实施例的各种指示信息也可以通过除上述提及的MAC层信令之外的其他信令，例如下行控制信息(Download Control Information，DCI)等。
还应理解，上述多个网络设备是以一个主小区组的网络设备和一个辅小区组的网络设备为例进行描述的，本申请实施例应不限于此，例如，该多个网络设备可以是一个主小区组的网络设备和多个辅小区组的网络设备。
还应理解，上述bitmap中一个比特位代表一个承载的复制数据传输功能的状态，本申请实施例应该不受限制，例如也可以用两个比特位代表一个承载的复制数据传输功能的状态。
图4示出了本申请实施例的用于传输数据的方法300的示意性框图。如图4所示，该方法300包括以下部分内容或全部内容：
S310，第一网络设备根据与除所述第一网络设备之外的网络设备的交互，确定所述第一网络设备为用于控制终端设备的第一数据无线承载DRB的复制数据传输功能的目标网络设备；
S320，所述第一网络设备向所述终端设备发送传输控制信息，所述传输控制信息用于指示所述第一网络设备为所述第一DRB配置的复制数据传输功能的状态，所述状态为激活状态或非激活状态。
因此，本申请实施例的用于传输数据的方法，通过网络设备之间的协作使得终端设备能够确定出来针对某一承载的复制数据传输功能的有效网络设备，有利于后续控制该承载的复制数据传输功能，进而有利于数据传输的性能。
可选地，在本申请实施例中，所述传输控制信息通过比特图中的第一比特位指示所述第一网络设备为所述第一DRB配置的复制数据传输功能的状态。
可选地，在本申请实施例中，所述第一网络设备为主小区组内的网络设备。
应理解，网络设备描述的网络设备与终端设备之间的交互及相关特性、功能等与终端设备的相关特性、功能相应。并且相关内容在上述方法100中已经作了详尽描述，为了简洁，在此不再赘述。
还应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不 应对本申请实施例的实施过程构成任何限定。
上文中详细描述了根据本申请实施例的用于传输数据的方法，下面将结合图5至图8，描述根据本申请实施例的用于传输数据的装置，方法实施例所描述的技术特征适用于以下装置实施例。
图5示出了本申请实施例的终端设备400的示意性框图。如图5所示，该终端设备400包括：
获取单元410，用于获取多个网络设备中的每个网络设备的第一传输控制信息，所述多个网络设备中的第一网络设备的第一传输控制信息用于指示所述第一网络设备为第一数据无线承载DRB配置的复制数据传输功能的状态为激活态，所述多个网络设备中除所述第一网络设备之外的第二网络设备的第一传输控制信息用于指示所述第二网络设备为所述第一DRB配置的复制数据传输功能的状态为非激活态；
确定单元420，用于根据所述每个网络设备的第一传输控制信息，确定用于控制第一DRB的复制数据传输功能的目标网络设备为所述第一网络设备。
因此，本申请实施例的终端设备，通过网络设备之间的协作使得终端设备能够确定出来针对某一承载的复制数据传输功能的有效网络设备，有利于后续控制该承载的复制数据传输功能，进而有利于数据传输的性能。
可选地，在本申请实施例中，所述获取单元还用于：在获取完所述第一网络设备的所述第一传输控制信息之后，获取所述第一网络设备的第二传输控制信息，所述第二传输控制信息用于指示所述第一网络设备为所述第一DRB配置的复制数据传输功能的状态；所述终端设备还包括：控制单元，用于根据所述第二传输控制信息，控制所述第一DRB的复制数据传输功能。
可选地，在本申请实施例中，所述控制单元具体用于：若所述第二传输控制信息指示的所述状态为非激活态，控制所述第一DRB传输非复制数据；若所述第二传输控制信息指示的所述状态为激活态，控制所述第一DRB传输复制数据。
可选地，在本申请实施例中，所述第一网络设备的第一传输控制信息通过比特图中的第一比特位指示所述第一网络设备为所述第一DRB配置的复制数据传输功能的状态，所述获取单元具体用于：接收所述第一网络设备发送的所述比特图；将所述比特图中与所述第一DRB对应的所述第一比特位 的值确定为所述第一网络设备的第一传输控制信息。
可选地，在本申请实施例中，所述第一网络设备的第一传输控制信息承载于媒体接入控制MAC信令中。
应理解，根据本申请实施例的终端设备400可对应于本申请方法实施例中的终端设备，并且终端设备400中的各个单元的上述和其它操作和/或功能分别为了实现图3方法中终端设备的相应流程，为了简洁，在此不再赘述。
图6示出了本申请实施例的网络设备500的示意性框图。所述网络设备为第一网络设备，如图6所示，该网络设备500包括：
确定单元510，用于根据与除所述第一网络设备之外的网络设备的交互，确定所述第一网络设备为用于控制终端设备的第一数据无线承载DRB的复制数据传输功能的目标网络设备；
发送单元520，用于向所述终端设备发送传输控制信息，所述传输控制信息用于指示所述第一网络设备为所述第一DRB配置的复制数据传输功能的状态，所述状态为激活状态或非激活状态。
因此，本申请实施例的网络设备，通过网络设备之间的协作使得终端设备能够确定出来针对某一承载的复制数据传输功能的有效网络设备，有利于后续控制该承载的复制数据传输功能，进而有利于数据传输的性能。
可选地，在本申请实施例中，所述传输控制信息通过比特图中的第一比特位指示所述第一网络设备为所述第一DRB配置的复制数据传输功能的状态。
可选地，在本申请实施例中，所述第一网络设备为主小区组内的网络设备。
应理解，根据本申请实施例的网络设备500可对应于本申请方法实施例中的网络设备，并且网络设备500中的各个单元的上述和其它操作和/或功能分别为了实现图4方法中网络设备的相应流程，为了简洁，在此不再赘述。
如图7所示，本申请实施例还提供了一种终端设备600，该终端设备600可以是图5中的终端设备400，其能够用于执行与图3中方法100对应的终端设备的内容。该终端设备600包括：输入接口610、输出接口620、处理器630以及存储器640，该输入接口610、输出接口620、处理器630和存储器640可以通过总线系统相连。该存储器640用于存储包括程序、指令或代码。该处理器630，用于执行该存储器640中的程序、指令或代码，以控制 输入接口610接收信号、控制输出接口620发送信号以及完成前述方法实施例中的操作。
因此，本申请实施例的终端设备，通过网络设备之间的协作使得终端设备能够确定出来针对某一承载的复制数据传输功能的有效网络设备，有利于后续控制该承载的复制数据传输功能，进而有利于数据传输的性能。
应理解，在本申请实施例中，该处理器630可以是中央处理单元(Central Processing Unit，CPU)，该处理器630还可以是其他通用处理器、数字信号处理器、专用集成电路、现成可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
该存储器640可以包括只读存储器和随机存取存储器，并向处理器630提供指令和数据。存储器640的一部分还可以包括非易失性随机存取存储器。例如，存储器640还可以存储设备类型的信息。
在实现过程中，上述方法的各内容可以通过处理器630中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的内容可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器640，处理器630读取存储器640中的信息，结合其硬件完成上述方法的内容。为避免重复，这里不再详细描述。
一个具体的实施方式中，终端设备400中的获取单元、确定单元和控制单元可以由图7中的处理器630实现。
如图8所示，本申请实施例还提供了一种网络设备700，该网络设备700可以是图6中的网络设备500，其能够用于执行与图4中方法200对应的网络设备的内容。该网络设备700包括：输入接口710、输出接口720、处理器730以及存储器740，该输入接口710、输出接口720、处理器730和存储器740可以通过总线系统相连。该存储器740用于存储包括程序、指令或代码。该处理器730，用于执行该存储器740中的程序、指令或代码，以控制输入接口710接收信号、控制输出接口720发送信号以及完成前述方法实施例中的操作。
因此，本申请实施例的网络设备，通过网络设备之间的协作使得终端设 备能够确定出来针对某一承载的复制数据传输功能的有效网络设备，有利于后续控制该承载的复制数据传输功能，进而有利于数据传输的性能。
应理解，在本申请实施例中，该处理器730可以是中央处理单元(Central Processing Unit，CPU)，该处理器730还可以是其他通用处理器、数字信号处理器、专用集成电路、现成可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
该存储器740可以包括只读存储器和随机存取存储器，并向处理器730提供指令和数据。存储器740的一部分还可以包括非易失性随机存取存储器。例如，存储器740还可以存储设备类型的信息。
在实现过程中，上述方法的各内容可以通过处理器730中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的内容可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器740，处理器730读取存储器740中的信息，结合其硬件完成上述方法的内容。为避免重复，这里不再详细描述。
一个具体的实施方式中，网络设备500中的发送单元可以由图8中的输出接口720实现，网络设备400中的确定单元可以由图8中的处理器接口730实现。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，该单元的划分，仅仅为一种逻辑功能划分，实际实现时可以 有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
该作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
该功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(RandomAccess Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应该以权利要求的保护范围为准。

Claims (17)

  1. 一种用于传输数据的方法，其特征在于，包括：
    终端设备获取多个网络设备中的每个网络设备的第一传输控制信息，所述多个网络设备中的第一网络设备的第一传输控制信息用于指示所述第一网络设备为第一数据无线承载DRB配置的复制数据传输功能的状态为激活态，所述多个网络设备中除所述第一网络设备之外的第二网络设备的第一传输控制信息用于指示所述第二网络设备为所述第一DRB配置的复制数据传输功能的状态为非激活态；
    所述终端设备根据所述每个网络设备的第一传输控制信息，确定用于控制第一DRB的复制数据传输功能的目标网络设备为所述第一网络设备。
  2. 根据权利要求1所述的方法，其特征在于，在所述终端设备根据所述每个网络设备的传输控制信息，确定用于控制第一DRB的复制数据传输功能的目标网络设备为所述第一网络设备之后，所述方法还包括：
    所述终端设备获取所述第一网络设备的第二传输控制信息，所述第二传输控制信息用于指示所述第一网络设备为所述第一DRB配置的复制数据传输功能的状态；
    所述终端设备根据所述第二传输控制信息，控制所述第一DRB的复制数据传输功能。
  3. 根据权利要求2所述的方法，其特征在于，所述终端设备根据所述第二传输控制信息，控制所述第一DRB的复制数据传输功能，包括：
    若所述第二传输控制信息指示的所述状态为非激活态，控制所述第一DRB传输非复制数据；
    若所述第二传输控制信息指示的所述状态为激活态，控制所述第一DRB传输复制数据。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述第一网络设备的第一传输控制信息通过比特图中的第一比特位指示所述第一网络设备为所述第一DRB配置的复制数据传输功能的状态，所述终端设备获取多个网络设备中的每个网络设备的第一传输控制信息，包括：
    所述终端设备接收所述第一网络设备发送的所述比特图；
    所述终端设备将所述比特图中与所述第一DRB对应的所述第一比特位的值确定为所述第一网络设备的第一传输控制信息。
  5. 根据权利要求4所述的方法，其特征在于，所述第一网络设备的第一传输控制信息承载于媒体接入控制MAC信令中。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述多个网络设备包括主小区组内的网络设备和辅小区组内的网络设备。
  7. 一种用于传输数据的方法，其特征在于，包括：
    第一网络设备根据与除所述第一网络设备之外的网络设备的交互，确定所述第一网络设备为用于控制终端设备的第一数据无线承载DRB的复制数据传输功能的目标网络设备；
    所述第一网络设备向所述终端设备发送传输控制信息，所述传输控制信息用于指示所述第一网络设备为所述第一DRB配置的复制数据传输功能的状态，所述状态为激活状态或非激活状态。
  8. 根据权利要求7所述的方法，其特征在于，所述传输控制信息通过比特图中的第一比特位指示所述第一网络设备为所述第一DRB配置的复制数据传输功能的状态。
  9. 根据权利要求7或8所述的方法，其特征在于，所述第一网络设备为主小区组内的网络设备。
  10. 一种终端设备，其特征在于，所述终端设备包括：
    获取单元，用于获取多个网络设备中的每个网络设备的第一传输控制信息，所述多个网络设备中的第一网络设备的第一传输控制信息用于指示所述第一网络设备为第一数据无线承载DRB配置的复制数据传输功能的状态为激活态，所述多个网络设备中除所述第一网络设备之外的第二网络设备的第一传输控制信息用于指示所述第二网络设备为所述第一DRB配置的复制数据传输功能的状态为非激活态；
    确定单元，用于根据所述每个网络设备的第一传输控制信息，确定用于控制第一DRB的复制数据传输功能的目标网络设备为所述第一网络设备。
  11. 根据权利要求10所述的终端设备，其特征在于，所述获取单元还用于：
    在获取完所述第一网络设备的所述第一传输控制信息之后，获取所述第一网络设备的第二传输控制信息，所述第二传输控制信息用于指示所述第一网络设备为所述第一DRB配置的复制数据传输功能的状态；
    所述终端设备还包括：
    控制单元，用于根据所述第二传输控制信息，控制所述第一DRB的复制数据传输功能。
  12. 根据权利要求11所述的终端设备，其特征在于，所述控制单元具体用于：
    若所述第二传输控制信息指示的所述状态为非激活态，控制所述第一DRB传输非复制数据；
    若所述第二传输控制信息指示的所述状态为激活态，控制所述第一DRB传输复制数据。
  13. 根据权利要求10至12中任一项所述的终端设备，其特征在于，所述第一网络设备的第一传输控制信息通过比特图中的第一比特位指示所述第一网络设备为所述第一DRB配置的复制数据传输功能的状态，所述获取单元具体用于：
    接收所述第一网络设备发送的所述比特图；
    将所述比特图中与所述第一DRB对应的所述第一比特位的值确定为所述第一网络设备的第一传输控制信息。
  14. 根据权利要求13所述的终端设备，其特征在于，所述第一网络设备的第一传输控制信息承载于媒体接入控制MAC信令中。
  15. 一种网络设备，其特征在于，所述网络设备为第一网络设备，所述网络设备包括：
    确定单元，用于根据与除所述第一网络设备之外的网络设备的交互，确定所述第一网络设备为用于控制终端设备的第一数据无线承载DRB的复制数据传输功能的目标网络设备；
    发送单元，用于向所述终端设备发送传输控制信息，所述传输控制信息用于指示所述第一网络设备为所述第一DRB配置的复制数据传输功能的状态，所述状态为激活状态或非激活状态。
  16. 根据权利要求15所述的网络设备，其特征在于，所述传输控制信息通过比特图中的第一比特位指示所述第一网络设备为所述第一DRB配置的复制数据传输功能的状态。
  17. 根据权利要求15或16所述的网络设备，其特征在于，所述第一网络设备为主小区组内的网络设备。
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