WO2022116035A1 - 通信方法和装置 - Google Patents

通信方法和装置 Download PDF

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Publication number
WO2022116035A1
WO2022116035A1 PCT/CN2020/133290 CN2020133290W WO2022116035A1 WO 2022116035 A1 WO2022116035 A1 WO 2022116035A1 CN 2020133290 W CN2020133290 W CN 2020133290W WO 2022116035 A1 WO2022116035 A1 WO 2022116035A1
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WO
WIPO (PCT)
Prior art keywords
protocol stack
message
terminal
configuration
network device
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PCT/CN2020/133290
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English (en)
French (fr)
Inventor
余国华
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华为技术有限公司
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Priority to PCT/CN2020/133290 priority Critical patent/WO2022116035A1/zh
Publication of WO2022116035A1 publication Critical patent/WO2022116035A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/25—Maintenance of established connections

Definitions

  • the present application relates to the field of communication, and more particularly, to a communication method and apparatus.
  • the base station After the user equipment (user equipment, UE) establishes a signaling radio bearer (SRB) and a data radio bearer (DRB), due to various algorithm changes, the base station sends a message to the user equipment (user equipment, UE) Initiate radio resource control (RRC) reconfiguration.
  • RRC radio resource control
  • the time period between the base station sending the RRC reconfiguration message to the UE and the base station receiving the RRC reconfiguration complete message sent by the UE is an ambiguous period.
  • the UE context configuration maintained by the base station side is inconsistent with the configuration parameters actually used by the UE side, thus bringing various negative impacts.
  • control resource set 0 control-resource set, CORESET
  • PUCCH physical uplink control channel
  • resource block resource block, RB
  • fallback DCI fallback downlink control information
  • the way to solve the problem of the fuzzy period in the prior art mainly centers on making the base station and the UE as close as possible at the time point when the new configuration takes effect, so as to achieve the purpose of reducing the duration of the fuzzy period.
  • the base station sends the RRC reconfiguration message to the UE
  • the UE's uplink and downlink configuration maintained by the base station still maintains the old configuration
  • the first packet of the RRC reconfiguration message to be sent receives a hybrid automatic repeat request (hybrid automatic repeat request, HARQ) response message (acknowledgement, ACK) and then switch to the new configuration.
  • HARQ hybrid automatic repeat request
  • the base station uplink switches to the new configuration, it starts to monitor the SRB.
  • the base station switches the downlink configuration to the new configuration and exits the fuzzy period. .
  • the present application provides a communication method and a communication device, so that the communication process between a network device and a terminal can reduce the problem of ambiguous periods.
  • a communication method is provided. The method may be performed by a network device.
  • the method may include: an air interface protocol stack between the network device and the terminal includes a first protocol stack, the network device sends a first message to the terminal through the first protocol stack, the first message includes a first configuration, the first The message is used to instruct the terminal to update the current configuration to the first configuration; the network device establishes a second protocol stack according to the first configuration; the network device sends the first protocol stack and the second protocol stack to the terminal respectively first data.
  • the network device maintains two protocol stacks at the same time, that is, simultaneously sends the first data to the terminal through the first protocol stack and the second protocol stack respectively, thereby reducing the time window of the fuzzy period, because the network device and the terminal are between Data transmission errors caused by different configurations.
  • the network device may send the first message to the terminal through the first protocol stack after establishing the second protocol stack according to the first configuration, or these two steps may be performed simultaneously.
  • the network device may send the first data to the terminal through the first protocol stack and the second protocol stack while sending the first message. That is, the above method does not have a certain sequence, but it needs to ensure that the network device establishes the second protocol stack according to the first configuration, and the time needs to be before the terminal completes the configuration update.
  • the first message includes an RRC reconfiguration message.
  • the communication standards of the first protocol stack and the second protocol stack are the same.
  • the first protocol stack is a protocol stack corresponding to the current configuration
  • the current configuration refers to the terminal context configuration currently maintained by the network device and the configuration currently actually used by the terminal.
  • the network device maintains the first protocol stack while establishing the second protocol stack according to the first configuration. After the establishment of the second protocol stack is completed, the first protocol stack and the second protocol stack are maintained simultaneously.
  • the maintaining the first protocol stack and the second protocol stack includes: simultaneously sending the first data to the terminal through the first protocol stack and the second protocol stack respectively.
  • the method further includes: receiving, by the network device, second data from the terminal through the first protocol stack and the second protocol stack.
  • the method further includes: the network device receives a second message from the terminal through the second protocol stack, where the second message is used to indicate that the terminal has The current configuration is updated to the first configuration; the network device deletes the first protocol stack.
  • the second message includes an RRC reconfiguration complete message.
  • the first protocol stack and the second protocol stack correspond to the same SRB and DRB.
  • the network device is connected to the SRB and the DRB, and the SRB and the DRB multiplex the first protocol stack and the second protocol stack.
  • the terminal Before the terminal completes the configuration update, the terminal connects with the SRB and the DRB through the first protocol stack, thereby establishing a data and signaling channel with the network device.
  • the terminal After the terminal completes the configuration update, the terminal connects with the SRB and the DRB through the second protocol stack, thereby establishing a data and signaling channel with the network device.
  • the method further includes: receiving, by the network device, a third message from the terminal from the first protocol stack through the SRB.
  • the third message includes a hybrid automatic repeat request HARQ response message ACK, where the ACK is used to indicate that the first message is successfully received.
  • the ACK message is a positive acknowledgement message.
  • the method further includes: the network device receives a HARQ response message NACK sent from the terminal from the second protocol stack through the SRB, where the NACK is used to indicate that the first message is not successfully received.
  • the network device after receiving the NACK message sent by the terminal, the network device resends the first message.
  • the NACK is a negative acknowledgement message.
  • the network device sends the first data through the first protocol stack and the second protocol stack at the same time, so that within the fuzzy period , no matter when the new configuration takes effect, the terminal can accurately transmit data with the network equipment, thereby reducing the traffic drop and PUCCH channel error caused by inconsistent configurations between the terminal and the base station during the ambiguous period.
  • a communication device in a second aspect, has a function of implementing the method in the first aspect or any possible implementation manners thereof.
  • This function can be implemented by hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more units corresponding to the above-mentioned functions.
  • a network device including a processor, a memory and a transceiver.
  • the memory is used to store the computer program
  • the processor is used to call and run the computer program stored in the memory, and control the transceiver to send and receive signals, so that the network device executes the method in the first aspect or any possible implementation manner thereof.
  • a computer-readable storage medium is provided, and computer instructions are stored in the computer-readable storage medium.
  • the computer instructions are executed on a computer, as in the first aspect or any possible implementations thereof method is implemented.
  • the present application provides a computer program product, the computer program product comprising a computer program or code, when the computer program or code is run on a computer, such as the method in the first aspect or any possible implementations thereof is realized.
  • the present application provides a communication device comprising a processor and a communication interface for receiving a signal and transmitting the signal to the processor, the processor processing the signal such that the first aspect or The method in any possible implementation thereof is executed.
  • the present application provides a wireless communication system, including the network device according to the third aspect.
  • FIG. 1 is a schematic diagram of a fuzzy period applying an embodiment of the present application.
  • FIG. 2 is a schematic interaction diagram of an example of a communication method according to an embodiment of the present application.
  • FIG. 3 is a schematic interaction diagram of still another example of the communication method according to the embodiment of the present application.
  • FIG. 4 is a schematic diagram of a protocol stack entity according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another example of a protocol stack entity according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of another example of a protocol stack entity according to an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of an example of a network device according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of still another example of a network device according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • GSM global system for mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • general packet radio service general packet radio service
  • GPRS general packet radio service
  • long term evolution long term evolution
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • 5G 5th Generation
  • 6G future sixth generation
  • new radio new radio
  • the terminal device in this embodiment of the present application may refer to a user equipment, 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, a wireless communication device, a user agent or user device.
  • the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks or terminals in the future evolution of the public land mobile network (PLMN) equipment, etc., which are not limited in this embodiment of the present application.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • PLMN public land mobile network
  • the network device in this embodiment of the present application may be a device for communicating with a terminal device, and the network device may be a global system for mobile communication (GSM) system or code division multiple access (CDMA)
  • GSM global system for mobile communication
  • CDMA code division multiple access
  • the base station (base transceiver station, BTS) in the LTE system can also be the base station (NodeB, NB) in the wideband code division multiple access (WCDMA) system, or the evolved base station (evolved) in the LTE system NodeB, eNB or eNodeB), it can also be a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, an in-vehicle device, a wearable device, and future
  • the network equipment in the 5G network or the network equipment in the future evolved PLMN network, etc., are not limited in the embodiments of the present application.
  • FIG. 1 shows a schematic diagram of the fuzzy period in this embodiment.
  • the network device sends a first message to the terminal at point A to instruct the terminal to update the current configuration. After the terminal updates the configuration, it sends a second message to the network device to indicate that the configuration update has been completed.
  • the network device receives the second message at point C, the time period from point A to point C is the fuzzy period.
  • the first message is an RRC reconfiguration message
  • the second message is an RRC reconfiguration complete message.
  • the context configuration maintained by the network device is inconsistent with the configuration parameters actually used by the terminal.
  • the network device updates the uplink configuration to the new configuration, the downlink configuration is still the old configuration, and the terminal uplink configuration and downlink configuration are both the old configuration.
  • the uplink configuration of the network device is still the new configuration
  • the downlink configuration is still the old configuration
  • the terminal updates both the uplink configuration and the downlink configuration.
  • the essence of the fuzzy period problem is caused by the inability of network devices and terminals to take effect of the new configuration synchronously.
  • FIG. 2 shows a schematic flowchart of a communication method 100 according to an embodiment of the present application.
  • method 100 includes:
  • the network device sends a first message to the terminal through the first protocol stack, where the first message includes the first configuration.
  • the network device establishes a second protocol stack.
  • the network device may establish a second protocol stack according to the first configuration.
  • the network device may establish a protocol stack corresponding to the first configuration, that is, the network device may establish a second protocol stack before S110, and then generate the first configuration according to the second protocol stack.
  • the network device sends the first data through the first protocol stack and the second protocol stack respectively.
  • the terminal updates the current configuration to the first configuration.
  • the air interface protocol stack between the network device and the terminal includes the first protocol stack. Due to algorithm change and other reasons, it is necessary to update the current configuration of the network device and the terminal.
  • the network device sends a first message to the terminal through the first protocol stack, the first message includes the first configuration, the network device instructs the terminal to update its current configuration to the first configuration through the first message, and the current configuration may include the uplink configuration and/or downlink configuration, the uplink configuration is the configuration parameter actually used when the terminal and the network device send or receive the uplink message, and the downlink configuration is the configuration parameter actually used when the terminal and the network device send or receive the downlink message.
  • the current configuration may include, for example, the configuration information of the protocol stack, or the configuration information of random access, or the configuration information of HARQ retransmission, and the like.
  • the network device establishes a second protocol stack according to the first configuration, and sends first data to the terminal through the first protocol stack and the second protocol stack respectively, where the first data is any data in the data to be transmitted. After receiving the first message, the terminal performs configuration update on the current configuration.
  • the network device may send the first message through the first protocol stack after establishing the second protocol stack. Also, the network device may simultaneously send the first message through the first protocol stack and send the first data through the first protocol stack and the second protocol stack. This application does not limit this.
  • step S140 and steps S120 and S130 do not have a necessary sequence. It should be said that it is precisely because the network device cannot determine the completion time of step S140 that the fuzzy period problem is caused.
  • This application only takes step S140 after step S130 as an example for description, but does not make any limitation.
  • S140 is an optional operation, that is, the terminal may not update the current configuration to the first configuration.
  • the terminal sends a second message to the network device through the second protocol stack, where the second message is used to indicate that the terminal has updated the current configuration to the first configuration.
  • the network device receives the second message, and determines according to the second message that the terminal has completed the configuration update.
  • the network device deletes the first protocol stack, and subsequent data only needs to be transmitted through the second protocol stack, thereby saving resources.
  • the communication standards of the first protocol stack and the second protocol stack are the same, for example, both are the LTE protocol stack or the NR protocol stack.
  • the terminal by simultaneously maintaining the first protocol stack corresponding to the old configuration and the second protocol stack corresponding to the new configuration, that is, the network device simultaneously sends the first data through the first protocol stack and the second protocol stack,
  • the terminal In the fuzzy period, no matter when the new configuration takes effect, the terminal can accurately transmit data with the network device, thereby reducing the data transmission error caused by the inconsistent configuration between the terminal and the network device in the time window of the fuzzy period. For example, traffic drops and PUCCH channel bit errors.
  • FIG. 3 shows a schematic flowchart of a communication method 200 according to an embodiment of the present application.
  • the air interface protocol stack between the base station and the UE includes a third protocol stack, where the third protocol stack corresponds to the current configuration. Due to algorithm changes and other reasons, the current configuration needs to be updated to the second configuration.
  • the base station sends an RRC reconfiguration message to the UE through the third protocol stack, the RRC reconfiguration message includes the second configuration, and the base station instructs the UE to update the current configuration to the second configuration through the RRC reconfiguration message.
  • Fig. 4 shows a schematic diagram of the protocol stack entity between the base station and the UE before the configuration update is performed.
  • the protocol stack of the base station includes an RRC layer, a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer and a radio link control (radio link control) layer. link control, RLC) layer and the third protocol stack.
  • the third protocol stack may include a medium access control (MAC) layer and a physical (PHY) layer.
  • MAC medium access control
  • PHY physical
  • the MAC layer can be responsible for including a dedicated control channel (DCCH) or a dedicated traffic channel (DTCH), and the PHY layer can be responsible for the physical downlink control channel (physical downlink control channel, PDCCH)/physical downlink shared channel (physical downlink shared channel) Downlink share channel, PDSCH), physical uplink control channel (physical uplink control channel, PUCCH) and physical uplink shared channel (physical uplink share channel, PUSCH) scheduling.
  • the SRB may include an RRC layer, a PDCP layer, and an RLC layer
  • the DRB may include an SDAP layer, a PDCP layer, and an RLC layer.
  • the SRB and the DRB multiplex the third protocol stack, and it can be considered that the underlying protocol layers corresponding to the SRB and the DRB may both be the third protocol stack.
  • the base station establishes a fourth protocol stack, that is, the fourth protocol stack is a protocol stack corresponding to the new configuration.
  • the base station may establish a fourth protocol stack according to the second configuration.
  • the base station may establish a protocol stack corresponding to the second configuration, that is, the base station may establish a fourth protocol stack before S210, and then generate the second configuration according to the fourth protocol stack.
  • the base station may first establish the fourth protocol stack according to the second configuration, and then send the RRC reconfiguration message through the third protocol stack. This process needs to ensure that S220 is completed before S260.
  • the base station sends third data to the UE through the third protocol stack and the fourth protocol stack, respectively. That is to say, in order to reduce the problem of inconsistency in the configuration of the base station and the UE within the time window of the fuzzy period, resulting in the inability of accurate data transmission between the base station and the UE, the base station establishes a fourth protocol stack on the basis of maintaining the third protocol stack, and at the same time The third and fourth protocol stacks are maintained.
  • FIG. 5 shows a schematic diagram of two protocol stack entities maintained by the base station at the same time. At this time, the third protocol stack and the fourth protocol stack correspond to the same SRB and DRB.
  • the base station sends the same data, for example, the third data, to the UE through the third protocol stack and the fourth protocol stack at the same time through the DRB.
  • the third data is received through the third protocol stack.
  • the UE sends fourth data to the base station through the third protocol stack.
  • the base station receives the fourth data through the third protocol stack.
  • the base station receives a third message sent by the UE from the third protocol stack through the SRB, where the third message may be, for example, a hybrid automatic repeat request HARQ response message ACK.
  • the UE after successfully receiving the RRC reconfiguration message sent by the base station, the UE sends a HARQ feedback ACK message to the base station.
  • the UE does not perform configuration update, so at S250, the UE sends an ACK message from the third protocol stack to the base station through the SRB, where the ACK message is used to indicate that the RRC reconfiguration message is successfully received.
  • the base station receives the ACK message through the third protocol stack.
  • the UE updates the current configuration to the second configuration, and at this time, the UE connects with the base station through the fourth protocol stack.
  • the fourth protocol stack is a protocol stack corresponding to the second configuration.
  • the base station sends fifth data to the UE through the fourth protocol stack and the third protocol stack, respectively. Since the base station cannot determine the specific completion time of S260, even after the UE completes the configuration update, the base station still needs to maintain the third protocol stack and the fourth protocol stack at the same time, that is, the base station simultaneously sends the third protocol stack and the fourth protocol stack to the DRB through the DRB. The UE sends the same data, eg fifth data. At this time, the UE has completed the configuration update, so the UE receives the fifth data through the fourth protocol stack, and sends the sixth data to the base station through the fourth protocol stack. Correspondingly, the base station receives the sixth data through the fourth protocol stack.
  • the UE sends an RRC reconfiguration complete message from the fourth protocol stack to the base station through the SRB, where the reconfiguration complete message is used to indicate that the UE has updated the current configuration to the second configuration.
  • the base station receives the RRC reconfiguration complete message through the fourth protocol stack, and then at S291, deletes the third protocol stack to save resources.
  • FIG. 6 shows a schematic diagram of the base station connecting with the UE through the fourth protocol stack after deleting the third protocol stack.
  • the base station sends the same data to the UE through the protocol stack corresponding to the new configuration and the protocol stack corresponding to the old configuration simultaneously within the time window of the fuzzy period, so that the UE no matter what the time window is in the fuzzy period
  • the new configuration takes effect, the data sent by the base station can be accurately received, and the data sent by the UE can also be accurately received by the base station, thus reducing the traffic drop and PUCCH caused by inconsistent configurations between the base station and the UE during the fuzzy period.
  • Channel error On the other hand, the mechanism of dual uplink reception and downlink dual transmission can also obtain combined gain, thereby improving the success rate of RRC reconfiguration.
  • each device such as a network device, etc.
  • each device in order to implement the above-mentioned functions, it includes corresponding hardware structures and/or software modules for performing each function.
  • the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each particular application, but such implementations should not be considered outside the scope of protection of this application.
  • the embodiments of the present application may divide the network device into functional modules according to the foregoing method examples.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and other feasible division manners may be used in actual implementation. The following description will be given by taking as an example that each function module is divided corresponding to each function.
  • FIG. 7 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application.
  • the apparatus 1000 includes a transceiver module 1010 and a processing module 1020 .
  • the transceiver module 1010 can implement corresponding communication functions, and the processing module 1010 is used for data processing.
  • Transceiver module 1010 may also be referred to as a communication interface or a communication unit.
  • the apparatus 1000 may further include a storage module, which may be used to store instructions and/or data, and the processing module 1020 may read the instructions and/or data in the storage module, so that the apparatus implements the foregoing method embodiments.
  • a storage module which may be used to store instructions and/or data
  • the processing module 1020 may read the instructions and/or data in the storage module, so that the apparatus implements the foregoing method embodiments.
  • the apparatus 1000 can be used to perform the actions performed by the network device in the above method embodiments, the transceiver module 1010 is used to perform the operations related to the transmission and reception of the network device in the above method embodiments, and the processing module 1020 is used to perform the above method implementations The processing-related operations of the network device in the example.
  • the apparatus 1000 is configured to perform the actions performed by the network device in the embodiment shown in FIG. 2 above, and the transceiver module 1010 is configured to: send a first message to the terminal through the first protocol stack, the first message The message includes a first configuration, and the first message is used to instruct the terminal to update the current configuration to the first configuration; the processing module 1020 is configured to: establish a second protocol stack according to the first configuration; the transceiver module 1010 is further configured to: respectively: The first data is sent to the terminal through the first protocol stack and the second protocol stack.
  • the transceiver module 1010 is further configured to: receive the second data from the terminal through the first protocol stack and the second protocol stack.
  • the transceiver module 1010 is further configured to: receive a second message from the terminal through the second protocol stack, where the second message is used to indicate that the terminal has updated the current configuration to the first configuration; the processing module 1020 is further used for: deleting the first protocol stack.
  • the first protocol stack and the second protocol stack correspond to the same signaling radio bearer SRB and data radio bearer DRB.
  • the transceiver module 1010 is further configured to: receive a third message from the terminal from the first protocol stack through the SRB.
  • the third message includes a hybrid automatic repeat request HARQ response message ACK, where the ACK is used to indicate that the first message was successfully received.
  • the processing module 1020 in the above embodiments may be implemented by at least one processor or processor-related circuit.
  • the transceiver module 1010 may be implemented by a transceiver or a transceiver-related circuit.
  • the storage module may be implemented by at least one memory.
  • an embodiment of the present application further provides a communication apparatus 1100 .
  • the apparatus 1100 includes a processor 1110 for executing computer programs or instructions and/or data, so that the methods in the above method embodiments are performed.
  • the apparatus 1100 includes one or more processors 1110 .
  • the apparatus 1100 may further include a memory 1120 for storing computer programs or instructions and/or data for execution by the processor 1110 .
  • the device 1100 may include one or more memories 1120 .
  • the memory 1120 may be integrated with the processor 1110, or provided separately.
  • the apparatus 1100 may further include a transceiver 1130, and the transceiver 1130 is used for signal reception and/or transmission.
  • the processor 1110 is used to control the transceiver 1130 to receive and/or transmit signals.
  • the apparatus 1100 is configured to implement the operations performed by the network device in the above method embodiments.
  • the processor 1110 is configured to implement the processing-related operations performed by the network device in the above method embodiments
  • the transceiver 1130 is configured to implement the transceiving-related operations performed by the network device in the above method embodiments.
  • This embodiment of the present application further provides a communication apparatus 1200, where the apparatus 1200 may be a network device or a chip.
  • the apparatus 1200 may be configured to perform the operations performed by the network device in the foregoing method embodiments.
  • FIG. 9 shows a simplified schematic diagram of the structure of a network device.
  • the network device includes part 1210 and part 1220.
  • the 1210 part is mainly used for sending and receiving radio frequency signals and the conversion of radio frequency signals and baseband signals; the 1220 part is mainly used for baseband processing and controlling network equipment.
  • the 1210 part can generally be referred to as a transceiver module, a transceiver, a transceiver circuit, or a transceiver.
  • the 1220 part is usually the control center of the network device, which can usually be called a processing module, and is used to control the network device to perform the processing operations on the network device side in the foregoing method embodiments.
  • the transceiver module of the 1210 part which may also be called a transceiver or a transceiver, etc., includes an antenna and a radio frequency circuit, wherein the radio frequency circuit is mainly used for radio frequency processing.
  • the device used for realizing the receiving function in the 1210 part can be regarded as a receiving module
  • the device used for realizing the sending function can be regarded as a sending module, that is, the part 1210 includes a receiving module and a sending module.
  • the receiving module may also be called a receiver, a receiver, or a receiving circuit, and the like
  • the sending module may be called a transmitter, a transmitter, or a transmitting circuit, and the like.
  • Section 1220 may include one or more single boards, each of which may include one or more processors and one or more memories.
  • the processor is used to read and execute programs in the memory to implement baseband processing functions and control network devices. If there are multiple boards, each board can be interconnected to enhance the processing capability.
  • one or more processors may be shared by multiple boards, or one or more memories may be shared by multiple boards, or one or more processors may be shared by multiple boards at the same time. device.
  • the transceiver module of part 1210 is used to perform the steps related to the transmission and reception of the network device or base station in FIG. 2 to FIG. 6 ; the part 1220 is used to perform the processing of the network device or base station in FIG. 2 to FIG. 6 . related steps.
  • FIG. 9 is only an example and not a limitation, and the above-mentioned network device including a transceiver module and a processing module may not depend on the structure shown in FIG. 9 .
  • the chip When the device 1200 is a chip, the chip includes a transceiver module and a processing module.
  • the transceiver module may be an input/output circuit or a communication interface;
  • the processing module is a processor, a microprocessor or an integrated circuit integrated on the chip.
  • Embodiments of the present application further provide a computer-readable storage medium, on which computer instructions for implementing the method executed by the first network device in the foregoing method embodiments are stored.
  • the computer program when executed by a computer, the computer can implement the method executed by the network device in the above method embodiments.
  • Embodiments of the present application further provide a computer program product including instructions, which, when executed by a computer, cause the computer to implement the method executed by the first device or the method executed by the second device in the above method embodiments.
  • An embodiment of the present application further provides a communication system, where the communication system includes the network device in the above embodiment.
  • the network device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory).
  • the operating system of the operating system layer may be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system.
  • the application layer may include applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the present application do not specifically limit the specific structure of the execution body of the methods provided by the embodiments of the present application, as long as the program in which the codes of the methods provided by the embodiments of the present application are recorded can be executed to execute the methods according to the embodiments of the present application.
  • the execution body of the method provided by the embodiment of the present application may be a network device, or a functional module in the network device that can call a program and execute the program.
  • Computer readable media may include, but are not limited to, magnetic storage devices (eg, hard disks, floppy disks, or magnetic tapes, etc.), optical disks (eg, compact discs (CDs), digital versatile discs (DVDs), etc. ), smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), cards, stick or key drives, etc.).
  • magnetic storage devices eg, hard disks, floppy disks, or magnetic tapes, etc.
  • optical disks eg, compact discs (CDs), digital versatile discs (DVDs), etc.
  • smart cards and flash memory devices eg, erasable programmable read-only memory (EPROM), cards, stick or key drives, etc.
  • Various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • processors mentioned in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), application-specific integrated circuits ( application specific integrated circuit, ASIC), off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM).
  • RAM can be used as an external cache.
  • RAM may include the following forms: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM) , double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM) and Direct memory bus random access memory (direct rambus RAM, DR RAM).
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous link dynamic random access memory
  • Direct memory bus random access memory direct rambus RAM, DR RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components
  • the memory storage module
  • memory described herein is intended to include, but not be limited to, these and any other suitable types of memory.
  • the disclosed apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, which may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and 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 implement the solution provided in this application.
  • each functional unit in each embodiment of the present application may be integrated into one unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the computer may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer may be a personal computer, a server, or a network device or the like.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media.
  • the available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), etc.
  • the medium may include, but is not limited to: U disk, removable hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

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Abstract

本申请提供了一种通信方法和装置。该方法包括：网络设备通过第一协议栈向终端发送第一消息，该第一消息包括第一配置，该第一消息用于指示该终端将当前配置更新为所述第一配置。该网络设备同时会根据所述第一配置建立第二协议栈，并分别通过第一协议栈和第二协议栈向该终端发送相同数据。通过本申请提供的通信方法，网络设备会同时维持两个协议栈，即同时分别通过第一协议栈和第二协议栈与终端进行通信，减少了重配模糊期内，数据传输失败或传输错误。

Description

通信方法和装置 技术领域
本申请涉及通信领域，并且更加具体地，涉及一种通信方法和装置。
背景技术
用户设备(user equipment，UE)建立了信令无线承载(signaling radio bearer，SRB)和数据无线承载(data radio bearer，DRB)之后，由于各种算法变更，基站向用户设备(user equipment，UE)发起无线资源控制(radio resource control，RRC)重配置。然而在RRC重配置过程，基站无法准确识别UE切换到新配置的时间，因此也就无法保证和UE同时生成新配置，从而导致了模糊期问题。
基站向UE下发RRC重配消息和基站接收到该UE发送的RRC重配完成消息之间的时间段为模糊期。在模糊期时间窗内，基站侧维护的UE上下文配置和UE侧实际使用的配置参数不一致，因此会带来各种负面的影响。例如：模糊期内只能使用控制资源集0(control-resource set，CORESET)资源，导致公共物理上行控制信道(physical uplink control channel，PUCCH)资源受限，以及资源块(resource block，RB)资源受限，引起流量掉坑；模糊期使用回退下行控制信息(fallback downlink control information，fallback DCI)，可以解决部分场景参数不一致的问题，但是如果RRC重配过程配置了PUCCH参数，则PUCCH信道的误码问题无法彻底解决。
现有技术中解决模糊期问题的方式主要围绕让基站和UE在生效新配置时间点上尽量靠近，从而达到减少模糊期时长的目的。例如：基站给UE下发RRC重配消息后，基站侧维护的UE上下行配置还是维持老配置，待下发的RRC重配消息的首包收到混合自动重传请求(hybrid automatic repeat request，HARQ)应答消息(acknowledgement，ACK)后再切换到新配置，基站上行切换到新配置后，开始监视SRB，当接收到第一个上行消息时，基站将下行配置切换到新配置，退出模糊期。
由上可知，现有技术的方案只能降低模糊期时长。因此，提供一种可以更好地解决模糊期问题的方法是当前亟待解决的问题。
发明内容
本申请提供了一种通信方法和通信装置，使得网络设备和终端之间的通信过程可以减少模糊期问题。
第一方面，提供了一种通信方法。该方法可以由网络设备执行。
该方法可以包括：网络设备和终端之间的空口协议栈包括第一协议栈，该网络设备通过该第一协议栈向该终端发送第一消息，该第一消息包括第一配置，该第一消息用于指示该终端将当前配置更新为该第一配置；该网络设备根据该第一配置建立第二协议栈；该网络设备分别通过该第一协议栈和该第二协议栈向该终端发送第一数据。
基于上述技术方案，网络设备通过同时维持两个协议栈，即同时分别通过第一协议栈和第二协议栈向终端发送第一数据，减少了模糊期时间窗内，因为网络设备和终端之间配置不同而导致的数据传输错误。
可以理解，网络设备可以根据第一配置建立第二协议栈之后，再通过该第一协议栈向终端发送该第一消息，或者这两个步骤也可以同时进行。可选地，网络设备可以在发送第一消息的同时，通过第一协议栈和第二协议栈向终端发送第一数据。即，上述方法没有必然的先后顺序，但需要确保网络设备根据第一配置建立第二协议栈，时间上需要在终端完成配置更新之前。
可选地，该第一消息包括RRC重配消息。
可选地，该第一协议栈和该第二协议栈的通信制式相同。
可选地，该第一协议栈为该当前配置对应的协议栈，该当前配置指的是网络设备当前所维护的终端上下文配置和终端当前实际使用的配置。
可选地，该网络设备根据该第一配置建立第二协议栈的同时，维持着第一协议栈。第二协议栈建立完成之后，同时维持第一协议栈和第二协议栈。
可选地，该维持第一协议栈和第二协议栈包括：同时分别通过该第一协议栈和该第二协议栈向该终端发送第一数据。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：该网络设备通过该第一协议栈和该第二协议栈接收来自该终端的第二数据。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：该网络设备通过该第二协议栈接收来自该终端的第二消息，该第二消息用于指示该终端已经将该当前配置更新为该第一配置；该网络设备删除该第一协议栈。
可选地，该第二消息包括RRC重配完成消息。
结合第一方面，在第一方面的某些实现方式中，该第一协议栈和该第二协议栈对应于相同的SRB和DRB。
可以理解，网络设备与SRB和DRB连接，该SRB和该DRB复用第一协议栈和第二协议栈。在终端完成配置更新之前，终端通过第一协议栈与SRB和DRB连接，从而建立与网络设备之间的数据及信令通道。在终端完成配置更新之后，终端通过第二协议栈与SRB和DRB连接，从而建立与网络设备之间的数据及信令通道。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：该网络设备通过该SRB从该第一协议栈接收来自该终端的第三消息。
结合第一方面，在第一方面的某些实现方式中，该第三消息包括混合自动重传请求HARQ应答消息ACK，该ACK用于指示该第一消息被成功接收。
可以理解，该ACK消息为肯定应答消息。
可选地，该方法还包括：该网络设备通过该SRB从该第二协议栈接收来自该终端的发送的HARQ应答消息NACK，该NACK用于指示该第一消息未被成功接收。
可选地，网络设备接收到终端发送的NACK消息之后，重新发送该第一消息。
可以理解，该NACK为否定应答消息。
基于上述技术方案，通过同时维持旧配置对应的第一协议栈和新配置对应的第二协议栈，即网络设备同时通过第一协议栈和第二协议栈发送第一数据，使得在模糊期内，无论 终端何时生效新配置，都能够准确地与网络设备之间进行数据传输，从而减少了模糊期期间，因终端和基站之间配置不一致而带来的流量掉坑和PUCCH信道误码。
第二方面，提供了一种通信装置，该通信装置具有实现第一方面或其任意可能的实现方式中的方法的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的单元。
第三方面，提供了一种网络设备，包括处理器、存储器和收发器。其中，存储器用于存储计算机程序，处理器用于调用并运行存储器中存储的计算机程序，并控制收发器收发信号，以使网络设备执行如第一方面或其任意可能的实现方式中的方法。
第四方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有计算机指令，当该计算机指令在计算机上被执行时，如第一方面或其任意可能的实现方式中的方法被实现。
第五方面，本申请提供一种计算机程序产品，该计算机程序产品包括计算机程序或代码，当该计算机程序或代码在计算机上被运行时，如第一方面或其任意可能的实现方式中的方法被实现。
第六方面，本申请提供一种通信装置，包括处理器和通信接口，该通信接口用于接收信号并将该信号传输至该处理器，该处理器处理该信号，以使得如第一方面或其任意可能的实现方式中的方法被执行。
第七方面，本申请提供一种无线通信系统，包括如第三方面该的网络设备。
附图说明
图1是应用本申请实施例的模糊期示意图。
图2是本申请实施例的通信方法的一例示意性交互图。
图3是本申请实施例的通信方法的再一例示意性交互图。
图4是本申请实施例的协议栈实体示意图。
图5是本申请实施例的再一例协议栈实体示意图。
图6是本申请实施例的再一例协议栈实体示意图。
图7是本申请实施例的网络设备的一例的示意性框图。
图8是本申请实施例的网络设备的再一例的示意性框图。
图9是本申请实施例的网络设备的示意性结构图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
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 for 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)、长期演进(long term evolution，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、第五代(5th Generation，5G)系统、未来的第六代(6th Generation，6G)或新无线(new radio，NR)等。
本申请实施例中的终端设备可以指用户设备、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。终端设备还可以是蜂窝电话、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，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，本申请实施例对此并不限定。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备可以是全球移动通讯(global system for mobile communication，GSM)系统或码分多址(code division multiple access，CDMA)中的基站(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(evolved 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示出了本实施例中的模糊期示意图。如图1所示，网络设备在A点向终端发送第一消息以指示终端对当前配置进行更新，终端更新完配置后，向网络设备发送第二消息以表示配置更新已完成。网络设备在C点收到该第二消息，则A点到C点的时间段即为模糊期。例如在RRC重配过程，第一消息为RRC重配消息，第二消息为RRC重配完成消息。A点到C点的时间窗内，网络设备维护的上下文配置与终端实际使用的配置参数不一致。具体地，在A点到B点的时间段内，网络设备将上行配置更新为新配置，下行配置仍然为老配置，终端上行配置和下行配置均为老配置，因此在A点到B点的时间段内，终端和网络设备之间存在上行冲突；在B点到C点的时间段内，网络设备的上行配置还是新配置，下行配置还是老配置，而终端将上行配置和下行配置均更新为了新配置，因此在B点到C点的时间段内，终端和网络设备之间存在下行冲突。因此，模糊期问题的本质是网络设备和终端无法同步生效新配置引起的。
下面将结合图2至图5对本申请的通信方法进行详细说明，附图中以虚线标识的特征或内容可理解为本申请实施例的可选操作或者可选结构。
图2示出了根据本申请实施例的一种通信方法100的示意性流程图。从图2可以看出，方法100包括：
S110，网络设备通过第一协议栈向终端发送第一消息，该第一消息包括第一配置。
S120，网络设备建立第二协议栈。
示例性的，该网络设备可以根据该第一配置建立第二协议栈。或者，该网络设备可以建立与该第一配置对应的协议栈，即，该网络设备可以在S110之前，建立第二协议栈，然后根据该第二协议栈生成该第一配置。
S130，网络设备分别通过第一协议栈和第二协议栈发送第一数据。
S140，终端将当前配置更新为第一配置。
具体而言，在S110之前，网络设备和终端之间的空口协议栈包括第一协议栈，由于算法变更等原因，需要对网络设备和终端的当前配置进行配置更新。网络设备通过第一协议栈向终端发送第一消息，该第一消息包括第一配置，网络设备通过该第一消息指示终端将其当前配置更新为该第一配置，该当前配置可以包括上行配置和/或下行配置，该上行配置是终端与网络设备发送或接收上行消息时实际使用的配置参数，该下行配置是终端与网络设备发送或接收下行消息时实际使用的配置参数。当前配置例如可以包括：协议栈的配置信息，或者是随机接入的配置信息，或者是HARQ重传的配置信息等。网络设备根据第一配置建立第二协议栈，并分别通过第一协议栈和第二协议栈向终端发送第一数据，该第一数据为待传输数据中的任意数据。终端接收到该第一消息之后，对当前配置进行配置更新。
需要说明的是，网络设备可以在建立了第二协议栈之后，再通过第一协议栈发送第一消息。并且，网络设备可以同时通过第一协议栈发送第一消息以及通过第一协议栈和第二协议栈发送第一数据。本申请对此不作限定。
还需要说明的是，步骤S140与步骤S120和S130没有必然的先后顺序。应当说，正是由于网络设备无法确定步骤S140的完成时间，才导致了模糊期问题。本申请仅以步骤S140在步骤S130之后为例进行说明，但并不作任何限定作用。S140是可选的操作，也就是说，终端可以不将当前配置更新为第一配置。
可选地，在S140之后，终端通过第二协议栈向网络设备发送第二消息，该第二消息用于指示该终端已经将当前配置更新为第一配置。对应地，网络设备接收该第二消息，根据该第二消息确定终端已经完成配置更新。
可选地，网络设备根据第二消息确定了终端已经将当前配置更新为第一配置之后，删除第一协议栈，后续数据仅需要通过第二协议栈进行传输，从而可以节约资源。
可选地，该第一协议栈和该第二协议栈的通信制式相同，例如都为LTE协议栈或者NR协议栈。
因此，本申请实施例的通信方法，通过同时维持旧配置对应的第一协议栈和新配置对应的第二协议栈，即网络设备同时通过第一协议栈和第二协议栈发送第一数据，使得在模糊期内，无论终端何时生效新配置，都能够准确地与网络设备进行数据传输，从而减少了模糊期时间窗内，因终端和网络设备之间配置不一致而导致的数据传输错误，例如流量掉坑和PUCCH信道误码问题。
下面将结合图3至图5详细介绍本申请实施例的通信方法的一个具体实施例。为了方便起见，本申请实施例以基站和UE之间的RRC重配过程为例进行说明。
图3示出了根据本申请实施例的一种通信方法200的示意性流程图。基站和UE之间的空口协议栈包括第三协议栈，该第三协议栈对应当前配置。由于算法变更等原因，需要将当前配置更新为第二配置。
在S210，基站通过第三协议栈向UE发送RRC重配消息，该RRC重配消息包括该第二配置，基站通过该RRC重配消息指示UE将当前配置更新为该第二配置。
图4示出了在进行配置更新之前，基站和UE之间的协议栈实体示意图。从图4可以看出，基站的协议栈包括RRC层，服务数据适配协议(service data adaptation protocol， SDAP)层，分组数据汇聚协议(packet data convergence protocol，PDCP)层和无线链路控制(radio link control，RLC)层以及第三协议栈。第三协议栈可以包括介质访问控制(medium access control，MAC)层和物理(physical，PHY)层。MAC层可以负责包括专用控制信道(dedicated control channel，DCCH)或者专用业务信道(dedicated traffic channel，DTCH)，PHY层可以负责物理下行控制信道(physical downlink control channel，PDCCH)/物理下行共享信道(physical downlink share channel，PDSCH)，物理上行控制信道(physical uplink control channel，PUCCH)以及物理上行共享信道(physical uplink share channel，PUSCH)的调度。其中，SRB可以包括RRC层、PDCP层和RLC层，DRB可以包括SDAP层、PDCP层和RLC层。SRB和DRB复用第三协议栈，可以认为SRB和DRB对应的底层协议层可以都是第三协议栈。
在S220，基站建立第四协议栈，即第四协议栈为新配置对应的协议栈。示例性的，该基站可以根据该第二配置建立第四协议栈。或者，该基站可以建立与该第二配置对应的协议栈，即，该基站可以在S210之前，建立第四协议栈，然后根据该第四协议栈生成该第二配置。
需要注意的是，基站可以先根据第二配置建立第四协议栈之后，再通过第三协议栈发送RRC重配消息。该过程需要保证S220在S260之前完成。
在S230，基站分别通过第三协议栈和第四协议栈向UE发送第三数据。也就是说，为了减少模糊期时间窗内基站和UE配置不一致，导致基站和UE之间无法准确进行数据传输的问题，基站在保持第三协议栈的基础上，建立第四协议栈，并同时维持第三协议栈和第四协议栈。图5示出了基站同时维持的两个协议栈实体示意图。此时，第三协议栈和第四协议栈对应于同一个SRB和DRB。基站通过DRB同时通过第三协议栈和第四协议栈向UE发送相同的数据，例如第三数据。UE完成配置更新之前，通过第三协议栈接收该第三数据。并且，在S240，UE通过第三协议栈向基站发送第四数据。对应地，基站通过第三协议栈接收该第四数据。
可选地，基站通过SRB从第三协议栈接收UE发送的第三消息，该第三消息例如可以是混合自动重传请求HARQ应答消息ACK。示例性的，UE成功接收基站发送的RRC重配消息之后，向基站发送HARQ反馈ACK消息。此时UE未进行配置更新，因此在S250，UE从第三协议栈通过SRB向基站发送ACK消息，该ACK消息用于指示该RRC重配消息被成功接收。对应地，基站通过第三协议栈接收该ACK消息。
在S260，UE将当前配置更新为第二配置，此时UE通过第四协议栈与基站连接。
示例性的，该第四协议栈为第二配置对应的协议栈。
在S270，基站分别通过第四协议栈和第三协议栈向UE发送第五数据。由于基站无法确定S260的具体完成时间，因此即使在UE完成配置更新之后，基站依然要同时维持第三协议栈和第四协议栈，即基站通过DRB同时通过第三协议栈和第四协议栈向UE发送相同的数据，例如第五数据。此时UE已完成配置更新，因此UE通过第四协议栈接收该第五数据，并通过第四协议栈向基站发送第六数据。对应地，基站通过第四协议栈接收该第六数据。
可选地，在S280，UE通过SRB从第四协议栈向基站发送RRC重配完成消息，该重配完成消息用于指示UE已经将当前配置更新为第二配置。对应地，基站通过第四协议栈 接收该RRC重配完成消息，然后在S291，删除第三协议栈以节省资源。图6示出了基站删除第三协议栈之后，通过第四协议栈与UE连接的示意图。
因此，本申请实施例提供的通信方法中，基站通过在模糊期时间窗内，同时通过新配置对应的协议栈和旧配置对应的协议栈向UE发送相同的数据，使得UE在模糊期内无论何时生效新配置，都可以准确接收基站发送的数据，同时基站也可以准确接收UE发送的数据，从而减少了模糊期期间，因基站和UE之间配置不一致而带来的流量掉坑和PUCCH信道误码。另一方面，上行双收和下行双发的机制还可以获得合并增益，从而提升RRC重配成功率。
以上，结合图2至图6详细说明了本申请实施例提供的方法。以下，结合图7至图9详细说明本申请实施例提供的装置。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的内容可以参见上文方法实施例，为了简洁，这里不再赘述。
上文主要从各个设备之间交互的角度对本申请实施例提供的方案进行了描述。可以理解的是，各个设备，例如网络设备等等，为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该可以意识到，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，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，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保护范围。
本申请实施例可以根据上述方法示例，对网络设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有其它可行的划分方式。下面以采用对应各个功能划分各个功能模块为例进行说明。
图7是本申请实施例提供的通信装置的示意性框图。该装置1000包括收发模块1010和处理模块1020。收发模块1010可以实现相应的通信功能，处理模块1010用于进行数据处理。收发模块1010还可以称为通信接口或通信单元。
示例地，该装置1000还可以包括存储模块，该存储模块可以用于存储指令和/或数据，处理模块1020可以读取存储模块中的指令和/或数据，以使得装置实现前述方法实施例。
该装置1000可以用于执行上文方法实施例中网络设备所执行的动作，收发模块1010用于执行上文方法实施例中网络设备的收发相关的操作，处理模块1020用于执行上文方法实施例中网络设备的处理相关的操作。
作为一种设计，该装置1000用于执行上文图2所示实施例中网络设备所执行的动作，收发模块1010用于：通过该第一协议栈向该终端发送第一消息，该第一消息包括第一配置，该第一消息用于指示该终端将当前配置更新为该第一配置；处理模块1020用于：根据该第一配置建立第二协议栈；收发模块1010还用于：分别通过该第一协议栈和该第二协议栈向该终端发送第一数据。
作为一个示例，收发模块1010还用于：通过该第一协议栈和该第二协议栈接收来自该终端的第二数据。
作为又一个示例，收发模块1010还用于：通过该第二协议栈接收来自该终端的第二消息，该第二消息用于指示该终端已经将该当前配置更新为该第一配置；处理模块1020还用于：删除该第一协议栈。
作为又一个示例，该第一协议栈和该第二协议栈对应于相同的信令无线承载SRB和数据无线承载DRB。
作为又一个示例，收发模块1010还用于：通过该SRB从该第一协议栈接收来自该终端的第三消息。
作为又一个示例，该第三消息包括混合自动重传请求HARQ应答消息ACK，该ACK用于指示该第一消息被成功接收。
上文实施例中的处理模块1020可以由至少一个处理器或处理器相关电路实现。收发模块1010可以由收发器或收发器相关电路实现。存储模块可以通过至少一个存储器实现。
如图8所示，本申请实施例还提供一种通信装置1100。该装置1100包括处理器1110，处理器1110用于执行计算机程序或指令和/或数据，使得上文方法实施例中的方法被执行。
示例地，该装置1100包括的处理器1110为一个或多个。
示例地，如图8所示，该装置1100还可以包括存储器1120，存储器1120用于存储供处理器1110执行的计算机程序或者指令和或/数据。
示例地，该装置1100包括的存储器1120可以为一个或多个。
示例地，该存储器1120可以与该处理器1110集成在一起，或者分离设置。
示例地，如图8所示，该装置1100还可以包括收发器1130，收发器1130用于信号的接收和/或发送。例如，处理器1110用于控制收发器1130进行信号的接收和/或发送。
作为一种方案，该装置1100用于实现上文方法实施例中由网络设备执行的操作。
例如，处理器1110用于实现上文方法实施例中由网络设备执行的处理相关的操作，收发器1130用于实现上文方法实施例中由网络设备执行的收发相关的操作。
本申请实施例还提供一种通信装置1200，该装置1200可以是网络设备也可以是芯片。该装置1200可以用于执行上述方法实施例中由网络设备所执行的操作。
图9示出了一种简化的网络设备结构示意图。网络设备包括1210部分以及1220部分。1210部分主要用于射频信号的收发以及射频信号与基带信号的转换；1220部分主要用于基带处理，对网络设备进行控制等。1210部分通常可以称为收发模块、收发机、收发电路、或者收发器等。1220部分通常是网络设备的控制中心，通常可以称为处理模块，用于控制网络设备执行上述方法实施例中网络设备侧的处理操作。
1210部分的收发模块，也可以称为收发机或收发器等，其包括天线和射频电路，其中射频电路主要用于进行射频处理。例如，可以将1210部分中用于实现接收功能的器件视为接收模块，将用于实现发送功能的器件视为发送模块，即1210部分包括接收模块和发送模块。接收模块也可以称为接收机、接收器、或接收电路等，发送模块可以称为发射机、发射器或者发射电路等。
1220部分可以包括一个或多个单板，每个单板可以包括一个或多个处理器和一个或多个存储器。处理器用于读取和执行存储器中的程序以实现基带处理功能以及对网络设备的控制。若存在多个单板，各个单板之间可以互联以增强处理能力。作为一种可选的实施方式，也可以是多个单板共用一个或多个处理器，或者是多个单板共用一个或多个存储器， 或者是多个单板同时共用一个或多个处理器。
例如，在一种实现方式中，1210部分的收发模块用于执行图2至图6中网络设备或基站的收发相关的步骤；1220部分用于执行图2至图6中网络设备或基站的处理相关的步骤。
应理解，图9仅为示例而非限定，上述包括收发模块和处理模块的网络设备可以不依赖于图9所示的结构。
当该装置1200为芯片时，该芯片包括收发模块和处理模块。其中，收发模块可以是输入输出电路、通信接口；处理模块为该芯片上集成的处理器或者微处理器或者集成电路。
本申请实施例还提供一种计算机可读存储介质，其上存储有用于实现上述方法实施例中由第网络设备执行的方法的计算机指令。
例如，该计算机程序被计算机执行时，使得该计算机可以实现上述方法实施例中由网络设备执行的方法。
本申请实施例还提供一种包含指令的计算机程序产品，该指令被计算机执行时使得该计算机实现上述方法实施例中由第一设备执行的方法，或由第二设备执行的方法。
本申请实施例还提供一种通信系统，该通信系统包括上文实施例中的网络设备。
上述提供的任一种装置中相关内容的解释及有益效果均可参考上文提供的对应的方法实施例，此处不再赘述。
在本申请实施例中，网络设备可以包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。其中，硬件层可以包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。操作系统层的操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。应用层可以包含浏览器、通讯录、文字处理软件、即时通信软件等应用。
本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构进行特别限定，只要能够通过运行记录有本申请实施例提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可。例如，本申请实施例提供的方法的执行主体可以是网络设备，或者，是网络设备中能够调用程序并执行程序的功能模块。
本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本文中使用的术语“制品”可以涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括但不限于：磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。
本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可以包括但不限于：无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
应理解，本申请实施例中提及的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、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、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。
还应理解，本申请实施例中提及的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)。例如，RAM可以用作外部高速缓存。作为示例而非限定，RAM可以包括如下多种形式：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，DDR SDRAM)、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(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)可以集成在处理器中。
还需要说明的是，本文描述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。
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保护范围。
所属领域的技术人员可以清楚地了解到，为描述方便和简洁，上述描述的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。此外，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实现本申请提供的方案。
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。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。 当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。例如，所述计算机可以是个人计算机，服务器，或者网络设备等。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，(SSD))等。例如，前述的可用介质可以包括但不限于：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access 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，可轻易想到的变化或替换，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以所述权利要求和说明书的保护范围为准。

Claims (17)

  1. 一种通信方法，其特征在于，网络设备和终端之间的空口协议栈包括第一协议栈，所述方法包括：
    所述网络设备通过所述第一协议栈向所述终端发送第一消息，所述第一消息包括第一配置，所述第一消息用于指示所述终端将当前配置更新为所述第一配置；
    所述网络设备根据所述第一配置建立第二协议栈；
    所述网络设备分别通过所述第一协议栈和所述第二协议栈向所述终端发送第一数据。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述网络设备通过所述第一协议栈和所述第二协议栈接收来自所述终端的第二数据。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述网络设备通过所述第二协议栈接收来自所述终端的第二消息，所述第二消息用于指示所述终端已经将所述当前配置更新为所述第一配置；
    所述网络设备删除所述第一协议栈。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述第一协议栈和所述第二协议栈对应于相同的信令无线承载SRB和数据无线承载DRB。
  5. 根据权利要求4所述的方法，其特征在于，所述方法还包括：
    所述网络设备通过所述SRB从所述第一协议栈接收来自所述终端的第三消息。
  6. 根据权利要求5所述的方法，其特征在于，所述第三消息包括混合自动重传请求HARQ应答ACK消息，所述ACK消息用于指示所述第一消息被成功接收。
  7. 一种通信装置，其特征在于，包括：
    收发模块，用于通过第一协议栈向所述终端发送第一消息，所述第一消息包括第一配置，所述第一消息用于指示所述终端将当前配置更新为所述第一配置；
    处理模块，用于根据所述第一配置建立第二协议栈；
    所述收发模块，还用于分别通过所述第一协议栈和所述第二协议栈向所述终端发送第一数据。
  8. 根据权利要求7所述的装置，其特征在于，所述收发模块，还用于通过所述第一协议栈和所述第二协议栈接收来自所述终端的第二数据。
  9. 根据权利要求7或8所述的装置，其特征在于，所述收发模块，还用于通过所述第二协议栈接收来自所述终端的第二消息，所述第二消息用于指示所述终端已经将所述当前配置更新为所述第一配置；
    所述处理模块，还用于删除所述第一协议栈。
  10. 根据权利要求7至9中任一项所述的装置，其特征在于，所述第一协议栈和所述第二协议栈对应于相同的信令无线承载SRB和数据无线承载DRB。
  11. 根据权利要求10所述的装置，其特征在于，所述收发模块，还用于通过所述SRB从所述第二协议栈接收来自所述终端的第三消息。
  12. 根据权利要求11所述的装置，其特征在于，所述第三消息包括混合自动重传请求HARQ应答ACK消息，所述ACK消息用于指示所述第一消息被成功接收。
  13. 一种通信装置，其特征在于，包括：
    处理器，用于执行存储器中存储的计算机程序，以使得所述通信装置执行权利要求1至6中任一项所述的通信方法。
  14. 一种通信装置，其特征在于，所述装置用于执行权利要求1至6任意一项所述的方法。
  15. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行权利要求1至6中任一项所述的通信方法。
  16. 一种计算机程序产品，其特征在于，其包括有程序指令，所述程序指令当被计算机执行时使得所述计算机执行权利要求1至6任意一项所述的方法。
  17. 一种芯片系统，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片系统地通信设备执行权利要求1至6中任一项所述的通信方法。
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