WO2019019150A1 - 数据传输的方法、终端设备和网络设备 - Google Patents

数据传输的方法、终端设备和网络设备 Download PDF

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Publication number
WO2019019150A1
WO2019019150A1 PCT/CN2017/094912 CN2017094912W WO2019019150A1 WO 2019019150 A1 WO2019019150 A1 WO 2019019150A1 CN 2017094912 W CN2017094912 W CN 2017094912W WO 2019019150 A1 WO2019019150 A1 WO 2019019150A1
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WIPO (PCT)
Prior art keywords
entity
indication information
terminal device
network device
pdu
Prior art date
Application number
PCT/CN2017/094912
Other languages
English (en)
French (fr)
Inventor
唐海
Original Assignee
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.)
Filing date
Publication date
Priority to SG11201913348RA priority Critical patent/SG11201913348RA/en
Priority to EP17918872.7A priority patent/EP3627870B1/en
Priority to RU2019144037A priority patent/RU2745659C1/ru
Priority to PCT/CN2017/094912 priority patent/WO2019019150A1/zh
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 CA3067074A priority patent/CA3067074C/en
Priority to KR1020197036415A priority patent/KR20200030031A/ko
Priority to AU2017425323A priority patent/AU2017425323A1/en
Priority to JP2019568083A priority patent/JP2020532888A/ja
Priority to BR112020000053-1A priority patent/BR112020000053A2/pt
Priority to US16/620,746 priority patent/US11184939B2/en
Priority to CN201780089002.4A priority patent/CN110463239B/zh
Priority to TW107126186A priority patent/TW201911901A/zh
Publication of WO2019019150A1 publication Critical patent/WO2019019150A1/zh
Priority to IL271357A priority patent/IL271357A/en
Priority to ZA2020/01310A priority patent/ZA202001310B/en

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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
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
    • 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
    • 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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/189—Transmission or retransmission of more than one copy of a message
    • 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

  • Embodiments of the present invention relate to the field of communications, and, more particularly, to a method, a terminal device, and a network device for data transmission.
  • the Packet Data Convergence Protocol (PDCP) layer belongs to the data link layer and is used to process Radio Resource Control (RRC) messages on the control plane and Internet Protocol (IP) packets on the user plane.
  • RRC Radio Resource Control
  • IP Internet Protocol
  • the IP data packet can be header compressed and encrypted, and then submitted to the Radio Link Control (RLC) sublayer.
  • RLC Radio Link Control
  • the Long Term Evolution (LTE) technology introduces the concept of a Logical Channel Group (LCG). Specifically, if the data replication function of the PDCP is in an active state, the network device maps the first RLC entity to a certain LCG (that is, puts the logical channel corresponding to the first RLC entity into a certain LCG), and The two RLC entities are not mapped to a certain LCG (that is, the logical channel corresponding to the second RLC entity is not placed on the LCG). That is, the first RLC entity is included in the BSR, and the second RLC entity is not included in the BSR.
  • LCG Logical Channel Group
  • the terminal device may close the first RLC entity, and the network may not obtain the BSR including the first RLC entity, thereby reducing the success rate of data transmission.
  • the invention provides a data transmission method, a terminal device and a network device, which can effectively improve the success rate of data transmission.
  • a method of data transmission comprising:
  • the terminal device when the data replication function of the PDCP layer is switched from the active state to the closed state, the terminal device can determine the RLC entity for transmitting the PDU of the PDCP layer (mapped to the RLC entity on the LCG, or needs to be mapped) The RLC entity on the LCG, and then the PDU of the PDCP layer is transmitted on the RLC entity mapped to the LCG, which can effectively improve the success rate of data transmission.
  • the determining, by the first entity, the protocol data unit PDU used to transmit the PDCP layer includes:
  • At least one second entity is an RLC entity corresponding to the PDU when the data replication function is in an active state
  • the first entity is determined.
  • the determining, in the at least one second entity, the first entity includes:
  • the terminal device when the data replication function of the PDCP layer is switched from the active state to the closed state, the terminal device can determine the RLC entity mapped to the LCG, and then transmit the PDU of the PDCP layer on the RLC entity mapped to the LCG. Can effectively improve the success rate of data transmission.
  • the determining, in the at least one second entity, the first entity includes:
  • the first entity is determined in a first order, wherein the first order is an order of arrangement of the at least one second entity.
  • the terminal device determines that the RLC entity needs to be mapped to the LCG, and after the mapping operation of the network device, the terminal device can be mapped.
  • the PDU of the PDCP layer is transmitted to the RLC entity on the LCG, which effectively improves the success rate of data transmission.
  • the first sequence is a sequence formed by sorting the at least one second entity from high to low according to a priority of a logical channel corresponding to the RLC entity.
  • the determining protocol data used to send the PDCP layer The first entity of the unit PDU, including:
  • the method before the determining the first entity according to the indication information sent by the network device, the method further includes:
  • the receiving the indication information sent by the network device includes:
  • Radio resource control RRC signaling sent by the network device, where the RRC signaling includes the indication information.
  • a method of transmitting data comprising:
  • the indication information is used to indicate that the terminal device sends the protocol data unit of the PDCP layer to the network device by using the first entity when the data replication function of the packet data convergence protocol PDCP layer is switched from the active state to the closed state. PDU.
  • the sending the indication information to the network device includes:
  • a terminal device where the terminal device includes:
  • a determining unit configured to determine a first entity for transmitting a protocol data unit PDU of the PDCP layer when the data copy function of the packet data convergence protocol PDCP layer is switched from an active state to an off state;
  • transceiver unit configured to send the PDU to the network device by using the first entity.
  • a fourth aspect provides a terminal device, where the terminal device includes:
  • a processor configured to determine a first entity for transmitting a protocol data unit PDU of the PDCP layer when a data replication function of a packet data convergence protocol PDCP layer is switched from an active state to an off state;
  • transceiver configured to send the PDU to the network device by using the first entity.
  • a fifth aspect provides a network device, where the terminal device includes:
  • a generating unit configured to generate indication information, where the indication information is used to indicate that the terminal device passes when the data copy function of the packet data convergence protocol PDCP layer is switched from an activated state to an off state
  • the first entity sends the protocol data unit PDU of the PDCP layer to the network device.
  • a sending unit configured to send the indication information to the terminal device.
  • a network device where the terminal device includes:
  • the processor is configured to generate indication information, where the indication information is used to indicate that the terminal device sends the PDCP to the network device by using the first entity when the data replication function of the packet data convergence protocol PDCP layer is switched from the active state to the closed state.
  • Layer Protocol Data Unit PDU Layer Protocol Data Unit
  • a transceiver configured to send the indication information to the terminal device.
  • a computer readable medium for storing a computer program comprising instructions for performing the method embodiment of the first aspect or the second aspect described above.
  • a computer chip comprising: an input interface, an output interface, at least one processor, a memory, the processor is configured to execute code in the memory, and when the code is executed, the processing The respective processes executed by the terminal device or the network device in the method of transmitting data of the first aspect or the second aspect described above may be implemented.
  • a communication system comprising the aforementioned network device, and the aforementioned terminal device.
  • FIG. 1 is a schematic flowchart of a method for transmitting data of a PDCP layer according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for transmitting data according to an embodiment of the present invention.
  • FIG. 3 is a schematic block diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 4 is another schematic block diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 5 is a schematic block diagram of a network device according to an embodiment of the present invention.
  • FIG. 6 is another schematic block diagram of a network device according to an embodiment of the present invention.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • 5G communication system Long Term Evolution (Long Term Evolution, LTE), LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), and the like.
  • LTE Long Term Evolution
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • the present invention describes various embodiments in connection with network devices and terminal devices.
  • the network device may be a base station or a network side device having a base station function.
  • the network device may be a base station (Base Transceiver Station, BTS) in the GSM system or CDMA, or a base station (NodeB, NB) in the WCDMA system, or an evolved base station (Evolved Node B in the LTE system).
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolved Node B in the LTE system evolved base station
  • the eNB or eNodeB), or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a network device in a future 5G network.
  • a terminal device may also be called an access terminal, a user equipment (User Equipment, UE), 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, a wireless communication device, and a user. Agent or user device.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless A communication-enabled handheld device, computing device, or other linear processing device connected to a wireless modem, an in-vehicle device, a wearable device, and the like.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the embodiment of the present invention provides a method for transmitting data, which can utilize a Packet Data Convergence Protocol (PDCP). Layer copy data function for data duplication transfer.
  • PDCP Packet Data Convergence Protocol
  • the data transmission method of the embodiment of the invention can effectively improve the reliability of data transmission.
  • FIG. 1 is a schematic flowchart of a method for transmitting data of a PDCP layer according to an embodiment of the present invention.
  • data generated by the PDCP layer are respectively transmitted to two different RLC entities (RLC entity a and RLC entity b), and the two different RLC entities are intervened through the same media.
  • a Control (MAC) layer entity (MAC entity) maps to different physical layer carriers (a first physical layer carrier and a second physical layer carrier). It can be understood that, in the embodiment of the present invention, data generated by the PDCP layer (replicated data of PDUs and PDUs) are respectively mapped to different physical layer carriers by two different RLC entities, thereby achieving the purpose of frequency diversity gain, and further Can improve the reliability of data transmission.
  • each sublayer is sent to the receiving end according to the data of the protocol data unit.
  • the data that is not processed into each sub-layer is called a service data unit (SDU), and the data that is formed into a specific format after being processed by the sub-layer is called a protocol data unit (PDU).
  • SDU service data unit
  • PDU protocol data unit
  • the SDU is an information element transmitted from a higher layer protocol to a lower layer protocol, that is, the original data of the SDU is a PDU of the upper layer of the protocol.
  • the PDU formed by this layer is the SDU of the next layer.
  • each logical channel of each terminal device has one RLC entity (RLC entity), data received by the RLC entity from the PDCP layer, or data sent to the PDCP layer may be referred to as an RLC SDU (or PDCP PDU).
  • RLC SDU or PDCP PDU
  • RLC PDU or MAC SDU
  • the RLC layer is located between the PDCP layer and the MAC layer, and the RLC layer can communicate with the PDCP layer through a Service Access Point (SAP), and communicate with the MAC layer through a logical channel.
  • SAP Service Access Point
  • embodiments of the invention are not limited thereto.
  • the PDUs of the PDCP layer ie, PDCP PDUs
  • the PDCP PDUs are mapped to different physical layer carriers through different RLC entities, which can effectively improve.
  • the reliability of data transmission is mapped to different physical layer carriers through different RLC entities.
  • the terminal device since the data volume of the PDCP PDU is the same as the data volume of the PDCP PDU, the terminal device only needs to map the RLC entity corresponding to the PDCP PDU or the RLC entity corresponding to the PDCP PDU to the LCG. . That is, only one RLC entity is thus included in the Buffer Status Report (BSR).
  • BSR Buffer Status Report
  • the RLC entity mapped to a certain LCG should be selected to transmit the PDU of the PDCP layer, but not to the LCG.
  • the upper RLC entity transmits the PDCP PDU. That is to say, if the terminal device transmits the PDCP PDU with an RLC entity that is not mapped to the LCG, it may cause data transmission failure, thereby reducing the success rate of data transmission.
  • the network device maps the RLC entity a to a certain LCG without mapping the RLC entity b to the LCG. If the terminal device chooses to transmit the PDCP PDU with the RLC entity b, it may cause data transmission to fail.
  • a method for transmitting data is further proposed, which is mainly used for how the terminal device determines to transmit the PDCP layer when the data replication function of the PDCP layer is switched from the active state to the closed state in the CA scenario.
  • the PDU is mapped to the RLC entity on the LCG to improve the success rate of data transmission.
  • FIG. 2 is a schematic flowchart of a method 100 for transmitting data according to an embodiment of the present invention.
  • the method 100 includes:
  • the terminal device determines a first entity for transmitting the PDU of the PDCP layer, and sends the PDU to the network device by using the first entity.
  • the RLC entity determined by the terminal device is used to send the PDU to the network device.
  • the first entity determined by the terminal device may be mapped to an RLC entity on a certain LCG, or may be an RLC entity not mapped to the LCG.
  • the terminal device needs to wait for the network device to map the first entity to the LCG before transmitting the PDU of the PDCP layer. .
  • the network device maps the RLC entity a to a certain LCG without mapping the RLC entity b to the LCG. For example, if the terminal device selects the RLC entity a as the first entity, the terminal device can directly send the PDU of the PDCP layer to the network device through the RLC entity a. For example, if the terminal device selects the RLC entity b as the first entity, the terminal device needs to wait until the network device maps the RLC entity b to a certain LCG, and then sends the PDCP layer to the network device through the RLC entity b. PDU.
  • the terminal device can determine the RLC entity (for mapping to the LCG) for transmitting the PDU of the PDCP layer when the data replication function of the PDCP layer is switched from the active state to the closed state.
  • the RLC entity, or the RLC entity that needs to be mapped to the LCG can transmit the PDU of the PDCP layer on the RLC entity mapped to the LCG, which can effectively improve the success rate of data transmission.
  • the terminal device may acquire at least one second entity, where the at least one second entity is an RLC entity corresponding to the PDU when the data replication function is in an active state; and determining, in the at least one second entity, the first entity.
  • the terminal device may acquire the at least one second entity, where the at least one second entity may include a third entity and a fourth entity, where the third entity
  • the body may be an RLC entity corresponding to the PDCP PDU when the data replication function is in an active state
  • the fourth entity is an RLC corresponding to the replication data of the PDCP PDU when the data replication function is in an active state.
  • the third entity in the embodiment of the present invention is an RLC entity (logical channel) for transmitting a PDCP PDU
  • the fourth entity is an RLC entity (logical channel) for transmitting duplicate data of the PDCP PDU. Referring to FIG. 1, the third entity is an RLC entity a, and the fourth entity is an RLC entity b.
  • the terminal device may determine, in the at least one second entity, an RLC entity mapped on the logical channel group LCG as the first entity. It can be understood that, in the embodiment of the present invention, the terminal device can directly select a PDU that is mapped to the RLC entity on the LCG to transmit the PDCP layer, which can effectively improve the success rate of data transmission.
  • the terminal device may determine the first entity in a first order, where the first order is an order of arrangement of the at least one second entity.
  • the first sequence may be indicated by the network device to the terminal device, or may be stored in the memory of the terminal device in a pre-configured manner, or may be specified in a protocol, and may also be negotiated by the network device and the terminal device. Make a decision.
  • the embodiment of the invention is not specifically limited.
  • the first sequence is a sequence formed by sorting the at least one second entity from high to low according to the priority of the logical channel corresponding to the RLC entity.
  • the first sequence is specified in the protocol or pre-configured in the network device and the terminal device.
  • the terminal device determines that the RLC entity needs to be mapped to the LCG, and after the mapping operation of the network device, the terminal device can be mapped.
  • the PDU of the PDCP layer is transmitted to the RLC entity on the LCG, which effectively improves the success rate of data transmission.
  • the terminal device when the terminal device determines the RLC entity mapped on the logical channel group LCG as the first entity, if only one RLC entity of the at least one second entity has been mapped to the LCG, The terminal device can pick the RLC entity that has been mapped to the LCG as the first entity. If a plurality of RLC entities in the at least one second entity are mapped to the LCG, the terminal device may randomly select one or more RLC entities that have been mapped to the LCG as the first entity.
  • the terminal device may determine the first entity by way of network configuration.
  • the terminal device may receive the indication information sent by the network device, where the indication information is used to indicate the first entity, and the terminal determines, according to the indication information sent by the received network device, the terminal An entity.
  • the terminal device may receive radio resource control (RLC) signaling sent by the network device, where the RRC signaling includes the indication information.
  • RLC radio resource control
  • the network device may generate indication information for instructing the terminal device to send the PDCP to the network device by using the first entity when the data replication function of the packet data convergence protocol PDCP layer is switched from the active state to the closed state.
  • the protocol data unit PDU of the layer then, the indication information is sent to the terminal device.
  • the network device may send radio resource control RRC signaling to the terminal device, where the RRC signaling includes the indication information.
  • FIG. 3 is a schematic block diagram of a terminal device 200 according to an embodiment of the present invention.
  • the terminal device 200 includes:
  • the determining unit 210 is configured to determine, when the data copy function of the packet data convergence protocol PDCP layer is switched from the active state to the closed state, the first entity that is used to transmit the protocol data unit PDU of the PDCP layer, and the transceiver unit 220 is configured to pass The first entity sends the PDU to a network device.
  • the determining unit 210 is specifically configured to:
  • the at least one second entity is an RLC entity corresponding to the PDU when the data replication function is in an active state; and determining, in the at least one second entity, the first entity.
  • the determining unit 210 is more specifically configured to:
  • the RLC entity mapped on the logical channel group LCG is determined as the first entity.
  • the determining unit 210 is more specifically configured to:
  • the first entity is determined in a first order, wherein the first order is an order of arrangement of the at least one second entity.
  • the first sequence is a sequence formed by sorting the at least one second entity from high to low according to a priority of a logical channel corresponding to the RLC entity.
  • the determining unit 210 is specifically configured to:
  • the transceiver unit 220 is further configured to:
  • the transceiver unit 220 is specifically configured to:
  • Radio resource control RRC signaling sent by the network device, where the RRC signaling includes the indication information.
  • the determining unit 210 may be implemented by a processor, and the transceiver unit 220 may be implemented by a transceiver.
  • the terminal device 300 may include a processor 310, a transceiver 320, and a memory 330.
  • the memory 330 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 310.
  • the various components in the terminal device 300 are connected by a bus system, wherein the bus system includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • the terminal device 300 shown in FIG. 4 can implement the various processes implemented by the terminal device in the foregoing method embodiments of FIG. 1 and FIG. 2, and details are not described herein again.
  • FIG. 5 is a schematic block diagram of a network device 400 according to an embodiment of the present invention.
  • the network device 400 includes:
  • the generating unit 410 is configured to generate indication information, where the indication information is used to indicate that the terminal device sends the PDCP layer to the network device by using the first entity when the data replication function of the packet data convergence protocol PDCP layer is switched from the activated state to the closed state. Protocol Data Unit PDU.
  • the sending unit 420 is configured to send the indication information to the terminal device.
  • the sending unit 420 is specifically configured to:
  • Radio resource control RRC signaling Transmitting radio resource control RRC signaling to the terminal device, the RRC signaling including the indication information.
  • network device 500 can include a processor 510, a transceiver 520, and a memory 530.
  • the memory 530 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 510.
  • the various components in the network device 500 are connected by a bus system, wherein the bus system includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • the terminal device 500 shown in FIG. 6 can implement various processes implemented by the network device in the foregoing method embodiments of FIG. 1 and FIG. 2, and details are not repeatedly described herein.
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • each step of the foregoing method embodiments may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the above processor can be a general purpose processor, digital signal processing Digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, transistor logic device, discrete hardware component.
  • DSP digital signal processing Digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiment of the present invention may be directly implemented as a hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding 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, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • the memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erase programmable EPROM (EEPROM) or flash memory.
  • the volatile memory can be a random access memory (RAM) that acts as an external cache.
  • RAM random access memory
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • synchronous DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronously connected dynamic random access memory
  • DR RAM Direct Memory Bus Random Access Memory
  • first type of cell group and the second type may be adopted in the embodiment of the present invention.
  • Blocks, but these types of cell groups should not be limited to these terms. These terms are only used to distinguish types of cell groups from one another.
  • the words “at time” as used herein may be interpreted as “if” or “if” or “when” or “response” Determine “or” in response to the test.
  • the phrase “if determined” or “if detected (conditions or events stated)” can be interpreted as “when determined” or “in response to determination” or “when detected (stated condition or event) "Time” or “in response to a test (condition or event stated)”.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • 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 objectives of the embodiments of the present invention.
  • each functional unit in the embodiment of the present invention 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.
  • the portion of the technical solution that contributes in nature or to the prior art, or portions of the technical solution may be embodied in the form of a software product stored in a storage medium, including instructions for causing a computer
  • the device (which may be a personal computer, server, or network device, etc.) performs all or part of the steps of the method described in the embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory, a random access memory, a magnetic disk, or an optical disk.

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  • Mobile Radio Communication Systems (AREA)

Abstract

提供了一种传输数据的方法、终端设备和网络设备。该方法包括：在分组数据汇聚协议PDCP层的数据复制功能由激活状态切换至关闭状态时，确定用于传输该PDCP层的协议数据单元PDU的第一实体；通过该第一实体，向网络设备发送该PDU。本发明实施例的传输数据的方法，终端设备能够在PDCP层的数据复制功能由激活状态切换至关闭状态时，确定出用于传输该PDCP层的PDU的RLC实体(映射到LCG上的RLC实体，或者需要映射到LCG上的RLC实体)，进而在映射到LCG上的RLC实体上传输PDCP层的PDU，能够有效提高数据传输的成功率。

Description

数据传输的方法、终端设备和网络设备 技术领域
本发明实施例涉及通信领域，并且更具体地，涉及一种数据传输的方法、终端设备和网络设备。
背景技术
分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层属于数据链路层，用于处理控制平面上的无线资源控制(Radio Resource Control，RRC)消息以及用户平面上的因特网协议(IP)包。在用户平面上，PDCP子层得到来自上层的IP数据分组后，可以对IP数据分组进行头压缩和加密，然后递交到无线链路层控制协议(Radio Link Control，RLC)子层。
现有技术中，当PDCP层的数据复制功能处于激活状态时，由于数据都是复制的，每个RLC实体上的数据量必然相同。如果为每一个RLC实体对应的逻辑信道都上报一个缓冲区状态报告(Buffer Status Report，BSR)，会带来大量的信令开销。
为了解决上述问题，长期演进(Long Term Evolution，LTE)技术引入了逻辑信道组(Logical Channel Group，LCG)的概念。具体而言，假设PDCP的数据复制功能处于激活态时，网络设备将第一RLC实体映射到某个LCG上(即，将第一RLC实体对应的逻辑信道放入某个LCG上)，而第二RLC实体未映射到某个LCG上(即，将第二RLC实体对应的逻辑信道不放入到LCG上)。也就是说，第一RLC实体被包含到BSR中，而第二RLC实体没有被包含到BSR中。
但是，上述技术方案中，当PDCP层的数据复制功能被关闭时，终端设备有可能关闭第一RLC实体，进而导致网络获取不到包含第一RLC实体的BSR，降低了数据传输的成功率。
发明内容
提供了一种数据传输的方法、终端设备和网络设备，能够有效提高数据传输的成功率。
第一方面，提供了一种数据传输的方法，所述方法包括：
在分组数据汇聚协议PDCP层的数据复制功能由激活状态切换至关闭状态时，确定用于传输所述PDCP层的协议数据单元PDU的第一实体；
通过所述第一实体，向网络设备发送所述PDU。
本发明实施例中，终端设备能够在PDCP层的数据复制功能由激活状态切换至关闭状态时，确定出用于传输该PDCP层的PDU的RLC实体(映射到LCG上的RLC实体，或者需要映射到LCG上的RLC实体)，进而在映射到LCG上的RLC实体上传输PDCP层的PDU，能够有效提高数据传输的成功率。
在一些可能的实现方式中，所述确定用于传输所述PDCP层的协议数据单元PDU的第一实体，包括：
获取至少一个第二实体，所述至少一个第二实体为所述数据复制功能处于激活状态时所述PDU对应的RLC实体；
在所述至少一个第二实体中，确定所述第一实体。
在一些可能的实现方式中，所述在所述至少一个第二实体中，确定所述第一实体，包括：
在所述至少一个第二实体中，将映射在所述逻辑信道组LCG上的RLC实体确定为所述第一实体。
本发明实施例中，终端设备能够在PDCP层的数据复制功能由激活状态切换至关闭状态时，确定出映射到LCG上的RLC实体，进而在映射到LCG上的RLC实体上传输PDCP层的PDU，能够有效提高数据传输的成功率。
在一些可能的实现方式中，所述在所述至少一个第二实体中，确定所述第一实体，包括：
按照第一顺序确定所述第一实体，其中，所述第一顺序为所述至少一个第二实体的排列顺序。
本发明实施例中，终端设备能够在PDCP层的数据复制功能由激活状态切换至关闭状态时，确定出需要映射到LCG上的RLC实体，进而在网络设备进行映射操作后，终端设备能够在映射到LCG上的RLC实体上传输PDCP层的PDU，有效提高数据传输的成功率。
在一些可能的实现方式中，所述第一顺序为按照RLC实体对应的逻辑信道的优先级，由高到低对所述至少一个第二实体进行排序形成的序列。
在一些可能的实现方式中，所述确定用于发送所述PDCP层的协议数据 单元PDU的第一实体，包括：
根据网络设备发送的指示信息确定所述第一实体，所述指示信息用于指示所述第一实体。
在一些可能的实现方式中，所述根据网络设备发送的指示信息确定所述第一实体之前，所述方法还包括：
接收所述网络设备发送的所述指示信息。
在一些可能的实现方式中，所述接收所述网络设备发送的指示信息，包括：
接收所述网络设备发送的无线资源控制RRC信令，所述RRC信令包括所述指示信息。
第二方面，提供了一种传输数据的方法，所述方法包括：
生成指示信息，所述指示信息用于指示终端设备在分组数据汇聚协议PDCP层的数据复制功能由激活状态切换至关闭状态时，通过第一实体，向网络设备发送所述PDCP层的协议数据单元PDU。
向终端设备发送所述指示信息；
在一些可能的实现方式中，所述向所述网络设备发送指示信息，包括：
向所述终端设备发送无线资源控制RRC信令，所述RRC信令包括所述指示信息。
第三方面，提供了一种终端设备，所述终端设备包括：
确定单元，用于在分组数据汇聚协议PDCP层的数据复制功能由激活状态切换至关闭状态时，确定用于传输所述PDCP层的协议数据单元PDU的第一实体；
收发单元，用于通过所述第一实体，向网络设备发送所述PDU。
第四方面，提供了一种终端设备，所述终端设备包括：
处理器，用于在分组数据汇聚协议PDCP层的数据复制功能由激活状态切换至关闭状态时，确定用于传输所述PDCP层的协议数据单元PDU的第一实体；
收发器，用于通过所述第一实体，向网络设备发送所述PDU。
第五方面，提供了一种网络设备，所述终端设备包括：
生成单元，用于生成指示信息，所述指示信息用于指示终端设备在分组数据汇聚协议PDCP层的数据复制功能由激活状态切换至关闭状态时，通过 第一实体，向网络设备发送所述PDCP层的协议数据单元PDU。
发送单元，用于向终端设备发送所述指示信息。
第六方面，提供了一种网络设备，所述终端设备包括：
处理器，用于生成指示信息，所述指示信息用于指示终端设备在分组数据汇聚协议PDCP层的数据复制功能由激活状态切换至关闭状态时，通过第一实体，向网络设备发送所述PDCP层的协议数据单元PDU。
收发器，用于向终端设备发送所述指示信息。
第七方面，提供了一种计算机可读介质，用于存储计算机程序，该计算机程序包括用于执行上述第一方面或第二方面的方法实施例的指令。
第八方面，提供了一种计算机芯片，包括：输入接口、输出接口、至少一个处理器、存储器，所述处理器用于执行所述存储器中的代码，当所述代码被执行时，所述处理器可以实现上述第一方面或第二方面的传输数据的方法中由终端设备或者网络设备执行的各个过程。
第九方面，提供了一种通信系统，包括前述所述的网络设备，以及前述所述的终端设备。
附图说明
图1是本发明实施例的PDCP层的数据的传输方法的示意性流程图。
图2是本发明实施例的传输数据的方法的示意性流程图。
图3是本发明实施例的终端设备的示意性框图。
图4是本发明实施例的终端设备的另一示意性框图。
图5是本发明实施例的网络设备的示意性框图。
图6是本发明实施例的网络设备的另一示意性框图。
具体实施方式
下面将结合附图，对本发明实施例中的技术方案进行描述。
应理解，本发明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 ofMobile 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)、5G通信系统、长期演进(Long Term Evolution， LTE)、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)等。
本发明结合网络设备和终端设备描述了各个实施例。
其中，网络设备可以是基站或者具有基站功能的网络侧设备。例如，网络设备可以是GSM系统或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(Evolved Node B，eNB或eNodeB)，或者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网络中的网络设备等。
终端设备也可称为接入终端、用户设备(User Equipment，UE)、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、个人数字线性处理(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线性处理设备、车载设备、可穿戴设备等等。
基于新空口(New Radio NR)技术，在载波聚合(Carrier Aggregation，CA)场景下，本发明实施例，提出了一种传输数据的方法，可以利用分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层的复制数据功能，进行数据复制(data duplication)传输。本发明实施例的数据传输的方法能够有效提高数据传输的可靠性。
下面结合图1对本发明实施例中CA场景下的复制数据的传输方法进行简单介绍。
图1是本发明实施例的PDCP层的数据的传输方法的示意性流程图。
如图1所示，PDCP层生成的数据(PDU和PDU的复制数据)分别传输到两个不同的RLC实体(RLC实体a和RLC实体b)，这两个不同的RLC实体通过相同的媒体介入控制(Media Access Control，MAC)层实体(MAC实体)映射到不同的物理层载波(第一物理层载波和第二物理层载波)。可以理解，在本发明实施例中，PDCP层所生成的数据(PDU和PDU的复制数据)分别通过两个不同的RLC实体映射到不同的物理层载波上，能够达到频率分集增益的目的，进而能够提高数据传输的可靠性。
具体地，每一子层会根据协议数据单元的数据的不同，发送到接收端的 指定层。其中，进入每个子层未被处理的数据称为服务数据单元(service data unit，SDU)，经过子层处理后形成特定格式的数据被称为协议数据单元(Protocol Data Unit，PDU)。也就是说，SDU是从高层协议传送到低层协议的信息单元，即，SDU的原数据是协议上层的PDU。换句话说，本层形成的PDU即为下一层的SDU。
例如，每个终端设备的每个逻辑信道都有一个RLC实体(RLC entity)，RLC实体从PDCP层接收到的数据，或发往PDCP层的数据可以称为RLC SDU(或PDCP PDU)。RLC实体从MAC层接收到的数据，或发往MAC层的数据可以称为RLC PDU(或MAC SDU)。
应理解，本发明实施例中，RLC层位于PDCP层和MAC层之间，RLC层可以通过服务接入点(Service Access Point，SAP)与PDCP层进行通信，并通过逻辑信道与MAC层进行通信。但本发明实施例不限于此。
本发明实施例中，当PDCP层的数据复制处于激活态时，PDCP层的PDU(即PDCP PDU)和PDCP PDU的复制数据会通过不同的RLC实体映射在不同的物理层载波上，能够有效提高数据传输的可靠性。
但是，由于PDCP PDU的数据量和PDCP PDU的复制数据的数据量相同，因此，终端设备只需要将PDCP PDU对应的RLC实体，或者PDCP PDU的复制数据对应的RLC实体，映射到某个LCG上。也就是说，仅有一个RLC实体被从而被包含到缓冲区状态报告(Buffer Status Report，BSR)中。
由此，当PDCP层的数据复制被关闭时，为了让网络继续得到被选择的RLC实体的BSR，应该选择映射到某个LCG上的RLC实体传输PDCP层的PDU，而不能选择没有映射到LCG上的RLC实体传输该PDCP PDU。也就是说，如果终端设备用没有映射到LCG上的RLC实体传输该PDCP PDU，有可能导致数据传输失败，进而降低数据传输的成功率。结合图1来说，假设PDCP的数据复制功能处于激活态时，网络设备将RLC实体a映射到某个LCG上，而未将RLC实体b映射到LCG上。如果终端设备选择用RLC实体b传输该PDCP PDU，有可能导致数据传输失败。
因此，本发明实施例，进一步地提出了一种传输数据的方法，主要针对CA场景下，在PDCP层的数据复制功能由激活状态切换至关闭状态时，终端设备如何确定用于传输该PDCP层的PDU的、映射到LCG上的RLC实体，以提高数据传输的成功率。
图2是本发明实施例的传输数据的方法100的示意性流程图。
如图2所示，该方法100包括：
110，在PDCP层的数据复制功能由激活状态切换至关闭状态时，确定用于传输该PDCP层的PDU的第一实体。
120，通过该第一实体，向网络设备发送该PDU。
具体而言，在PDCP层的数据复制功能由激活状态切换至关闭状态时，终端设备确定用于传输该PDCP层的PDU的第一实体，并通过该第一实体，向网络设备发送该PDU。
也就是说，终端设备确定的该RLC实体是用于向网络设备发送该PDU的。换句话说，终端设备确定的该第一实体可能是已经映射到某个LCG上RLC实体，也可能是没有映射到LCG上的RLC实体。但是，需要注意的是，如果终端设备确定的该第一实体是没有映射到LCG上的RLC实体，终端设备在传输PDCP层的PDU之前，需要先等待网络设备将该第一实体映射到LCG上。
结合图1来说，假设PDCP的数据复制功能处于激活态时，网络设备将RLC实体a映射到某个LCG上，而未将RLC实体b映射到LCG上。例如，如果终端设备选择用RLC实体a作为该第一实体，则终端设备可以直接通过该RLC实体a向网络设备发送PDCP层的PDU。又例如，如果终端设备选择用RLC实体b作为该第一实体，则终端设备需要等到网络设备将该RLC实体b映射到某个LCG上之后，再通过该RLC实体b向网络设备发送PDCP层的PDU。
通过以上分析可以看出，本发明实施例中，终端设备能够在PDCP层的数据复制功能由激活状态切换至关闭状态时，确定出用于传输该PDCP层的PDU的RLC实体(映射到LCG上的RLC实体，或者需要映射到LCG上的RLC实体)，进而在映射到LCG上的RLC实体上传输PDCP层的PDU，能够有效提高数据传输的成功率。
作为一个实施例，终端设备可以获取至少一个第二实体，上述至少一个第二实体为该数据复制功能处于激活状态时该PDU对应的RLC实体；在上述至少一个第二实体中，确定该第一实体。
换一种说法，本发明实施例中，终端设备可以获取上述至少一个第二实体，上述至少一个第二实体可以包括第三实体和第四实体，其中，该第三实 体可以为该数据复制功能处于激活状态时该PDCP PDU对应的RLC实体，该第四实体为该数据复制功能处于激活状态时该PDCP PDU的复制数据对应的RLC实。其中，本发明实施例中的第三实体为用于传输PDCP PDU的RLC实体(逻辑信道)，第四实体为用于传输PDCP PDU的复制数据的RLC实体(逻辑信道)。结合图1来说，该第三实体为RLC实体a，该第四实体为RLC实体b。
例如，终端设备可以在上述至少一个第二实体中，将映射在该逻辑信道组LCG上的RLC实体确定为该第一实体。可以理解，本发明实施例中，终端设备可以直接选择在一个映射到LCG上的RLC实体传输PDCP层的PDU，能够有效提高数据传输的成功率。
又例如，终端设备可以按照第一顺序确定该第一实体，其中，该第一顺序为上述至少一个第二实体的排列顺序。应理解，该第一顺序可以由网络设备指示给终端设备，也可以通过预配置的方式存储在终端设备的存储器中，还可以在协议中进行规定，还可以通过网络设备与终端设备协商的方式进行确定。本发明实施例不做具体限定。
作为示例而非限定性地，该第一顺序为按照RLC实体对应的逻辑信道的优先级，由高到低对上述至少一个第二实体进行排序形成的序列。其中，将该第一顺序规定在协议中，或者预配置在网络设备和终端设备中。
本发明实施例中，终端设备能够在PDCP层的数据复制功能由激活状态切换至关闭状态时，确定出需要映射到LCG上的RLC实体，进而在网络设备进行映射操作后，终端设备能够在映射到LCG上的RLC实体上传输PDCP层的PDU，有效提高数据传输的成功率。
应理解，本发明实施例中，终端设备将映射在该逻辑信道组LCG上的RLC实体确定为该第一实体时，如果上述至少一个第二实体中仅有一个RLC实体已经映射到了LCG上，终端设备可以挑这个已经映射到了LCG上的RLC实体作为该第一实体。如果上述至少一个第二实体中有多个RLC实体映射到了LCG上，终端设备可以随便挑一个或者多个已经映射到了LCG上的RLC实体作为该第一实体。
作为另一个实施例，终端设备可以通过网络配置的方式确定该第一实体。可选地，终端设备可以接收该网络设备发送的该指示信息，该指示信息用于指示该第一实体，终端根据接收到的网络设备发送的指示信息确定该第 一实体。例如，终端设备可以接收该网络设备发送的无线资源控制(RLC)信令，该RRC信令包括该指示信息。
换句话说，网络设备可以生成指示信息，该指示信息用于指示终端设备在分组数据汇聚协议PDCP层的数据复制功能由激活状态切换至关闭状态时，通过第一实体，向网络设备发送该PDCP层的协议数据单元PDU；然后，向终端设备发送该指示信息。同样地，网络设备可以向该终端设备发送无线资源控制RRC信令，该RRC信令包括该指示信息。
图3是本发明实施例的终端设备200的示意性框图。
如图3所示，该终端设备200包括：
确定单元210，用于在分组数据汇聚协议PDCP层的数据复制功能由激活状态切换至关闭状态时，确定用于传输该PDCP层的协议数据单元PDU的第一实体；收发单元220，用于通过该第一实体，向网络设备发送该PDU。
可选地，确定单元210具体用于：
获取至少一个第二实体，上述至少一个第二实体为该数据复制功能处于激活状态时该PDU对应的RLC实体；在上述至少一个第二实体中，确定该第一实体。
可选地，确定单元210更具体用于：
在上述至少一个第二实体中，将映射在该逻辑信道组LCG上的RLC实体确定为该第一实体。
可选地，确定单元210更具体用于：
按照第一顺序确定该第一实体，其中，该第一顺序为上述至少一个第二实体的排列顺序。
可选地，该第一顺序为按照RLC实体对应的逻辑信道的优先级，由高到低对上述至少一个第二实体进行排序形成的序列。
可选地，确定单元210具体用于：
根据网络设备发送的指示信息确定该第一实体，该指示信息用于指示该第一实体。
可选地，该收发单元220还用于：
根据网络设备发送的指示信息确定该第一实体之前，接收该网络设备发送的该指示信息。
可选地，该收发单元220具体用于：
接收该网络设备发送的无线资源控制RRC信令，该RRC信令包括该指示信息。
应注意，本发明实施例中，确定单元210可以由处理器实现，收发单元220可由收发器实现。如图4所示，终端设备300可以包括处理器310、收发器320和存储器330。其中，存储器330可以用于存储指示信息，还可以用于存储处理器310执行的代码、指令等。终端设备300中的各个组件通过总线系统相连，其中，总线系统除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。
图4所示的终端设备300能够实现前述图1和图2的方法实施例中由终端设备所实现的各个过程，为避免重复，这里不再赘述。
图5是本发明实施例的网络设备400的示意性框图。
如图5所示，该网络设备400包括：
生成单元410，用于生成指示信息，该指示信息用于指示终端设备在分组数据汇聚协议PDCP层的数据复制功能由激活状态切换至关闭状态时，通过第一实体，向网络设备发送该PDCP层的协议数据单元PDU。
发送单元420，用于向终端设备发送该指示信息。
可选地，该发送单元420具体用于：
向该终端设备发送无线资源控制RRC信令，该RRC信令包括该指示信息。
应注意，本发明实施例中，生成单元410可以由处理器实现，发送单元420可由收发器实现。如图6所示，网络设备500可以包括处理器510、收发器520和存储器530。其中，存储器530可以用于存储指示信息，还可以用于存储处理器510执行的代码、指令等。网络设备500中的各个组件通过总线系统相连，其中，总线系统除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。
图6所示的终端设备500能够实现前述图1和图2的方法实施例中由网络设备所实现的各个过程，为避免重复，这里不再赘述。
应注意，本发明实施例中的方法实施例可以应用于处理器中，或者由处理器实现。处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理 器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。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。结合本发明实施例公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码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，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本发明实施例中，存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如，静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
最后，需要注意的是，在本发明实施例和所附权利要求书中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本发明实施例。
例如，在本发明实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
又例如，在本发明实施例中可能采用术语第一类型小区组和第二类型小 区组，但这些类型小区组不应限于这些术语。这些术语仅用来将类型小区组彼此区分开。
又例如，取决于语境，如在此所使用的词语“在......时”可以被解释成为“如果”或“若”或“当......时”或“响应于确定”或“响应于检测”。类似地，取决于语境，短语“如果确定”或“如果检测(陈述的条件或事件)”可以被解释成为“当确定时”或“响应于确定”或“当检测(陈述的条件或事件)时”或“响应于检测(陈述的条件或事件)”。
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发明实施例的范围。
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是示意性的，例如，所述单元的划分，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。
所述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发明实施例的目的。
另外，在本发明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。
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，本发明实施例的技 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)执行本发明实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
以上内容，仅为本发明实施例的具体实施方式，但本发明实施例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发明实施例揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明实施例的保护范围之内。因此，本发明实施例的保护范围应以权利要求的保护范围为准。

Claims (20)

  1. 一种传输数据的方法，其特征在于，包括：
    在分组数据汇聚协议PDCP层的数据复制功能由激活状态切换至关闭状态时，确定用于传输所述PDCP层的协议数据单元PDU的第一实体；
    通过所述第一实体，向网络设备发送所述PDU。
  2. 根据权利要求1所述的方法，其特征在于，所述确定用于传输所述PDCP层的协议数据单元PDU的第一实体，包括：
    获取至少一个第二实体，所述至少一个第二实体为所述数据复制功能处于激活状态时所述PDU对应的RLC实体；
    在所述至少一个第二实体中，确定所述第一实体。
  3. 根据权利要求2所述的方法，其特征在于，所述在所述至少一个第二实体中，确定所述第一实体，包括：
    在所述至少一个第二实体中，将映射在所述逻辑信道组LCG上的RLC实体确定为所述第一实体。
  4. 根据权利要求2所述的方法，其特征在于，所述在所述至少一个第二实体中，确定所述第一实体，包括：
    按照第一顺序确定所述第一实体，其中，所述第一顺序为所述至少一个第二实体的排列顺序。
  5. 根据权利要求4所述的方法，其特征在于，所述第一顺序为按照RLC实体对应的逻辑信道的优先级，由高到低对所述至少一个第二实体进行排序形成的序列。
  6. 根据权利要求1所述的方法，其特征在于，所述确定用于发送所述PDCP层的协议数据单元PDU的第一实体，包括：
    根据网络设备发送的指示信息确定所述第一实体，所述指示信息用于指示所述第一实体。
  7. 根据权利要求6所述的方法，其特征在于，所述根据网络设备发送的指示信息确定所述第一实体之前，所述方法还包括：
    接收所述网络设备发送的所述指示信息。
  8. 根据权利要求7所述的方法，其特征在于，所述接收所述网络设备发送的指示信息，包括：
    接收所述网络设备发送的无线资源控制RRC信令，所述RRC信令包括所述指示信息。
  9. 一种传输数据的方法，其特征在于，包括：
    生成指示信息，所述指示信息用于指示终端设备在分组数据汇聚协议PDCP层的数据复制功能由激活状态切换至关闭状态时，通过第一实体，向网络设备发送所述PDCP层的协议数据单元PDU；
    向终端设备发送所述指示信息。
  10. 根据权利要求9所述的方法，其特征在于，所述向所述网络设备发送指示信息，包括：
    向所述终端设备发送无线资源控制RRC信令，所述RRC信令包括所述指示信息。
  11. 一种终端设备，其特征在于，包括：
    确定单元，用于在分组数据汇聚协议PDCP层的数据复制功能由激活状态切换至关闭状态时，确定用于传输所述PDCP层的协议数据单元PDU的第一实体；
    收发单元，用于通过所述第一实体，向网络设备发送所述PDU。
  12. 根据权利要求11所述的终端设备，其特征在于，所述确定单元具体用于：
    获取至少一个第二实体，所述至少一个第二实体为所述数据复制功能处于激活状态时所述PDU对应的RLC实体；
    在所述至少一个第二实体中，确定所述第一实体。
  13. 根据权利要求12所述的终端设备，其特征在于，所述确定单元更具体用于：
    在所述至少一个第二实体中，将映射在所述逻辑信道组LCG上的RLC实体确定为所述第一实体。
  14. 根据权利要求12所述的终端设备，其特征在于，所述确定单元更具体用于：
    按照第一顺序确定所述第一实体，其中，所述第一顺序为所述至少一个第二实体的排列顺序。
  15. 根据权利要求14所述的终端设备，其特征在于，所述第一顺序为按照RLC实体对应的逻辑信道的优先级，由高到低对所述至少一个第二实体 进行排序形成的序列。
  16. 根据权利要求11所述的终端设备，其特征在于，所述确定单元具体用于：
    根据网络设备发送的指示信息确定所述第一实体，所述指示信息用于指示所述第一实体。
  17. 根据权利要求16所述的终端设备，其特征在于，所述收发单元还用于：
    根据网络设备发送的指示信息确定所述第一实体之前，接收所述网络设备发送的所述指示信息。
  18. 根据权利要求17所述的终端设备，其特征在于，所述收发单元具体用于：
    接收所述网络设备发送的无线资源控制RRC信令，所述RRC信令包括所述指示信息。
  19. 一种网络设备，其特征在于，包括：
    生成单元，用于生成指示信息，所述指示信息用于指示终端设备在分组数据汇聚协议PDCP层的数据复制功能由激活状态切换至关闭状态时，通过第一实体，向网络设备发送所述PDCP层的协议数据单元PDU；
    发送单元，用于向终端设备发送所述指示信息。
  20. 根据权利要求19所述的网络设备，其特征在于，所述发送单元具体用于：
    向所述终端设备发送无线资源控制RRC信令，所述RRC信令包括所述指示信息。
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