WO2019019123A1 - 重配置方法及相关产品 - Google Patents

重配置方法及相关产品 Download PDF

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Publication number
WO2019019123A1
WO2019019123A1 PCT/CN2017/094775 CN2017094775W WO2019019123A1 WO 2019019123 A1 WO2019019123 A1 WO 2019019123A1 CN 2017094775 W CN2017094775 W CN 2017094775W WO 2019019123 A1 WO2019019123 A1 WO 2019019123A1
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WO
WIPO (PCT)
Prior art keywords
pdcp
user equipment
lte
reconfiguration
pdu
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Application number
PCT/CN2017/094775
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
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 CN201780053572.8A priority Critical patent/CN109661834B/zh
Priority to EP17919467.5A priority patent/EP3493594B1/en
Priority to PCT/CN2017/094775 priority patent/WO2019019123A1/zh
Publication of WO2019019123A1 publication Critical patent/WO2019019123A1/zh
Priority to US16/353,567 priority patent/US10856180B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/22—Manipulation of transport tunnels
    • 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
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H04W36/00698—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using different RATs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0027—Control or signalling for completing the hand-off for data sessions of end-to-end connection for a plurality of data sessions of end-to-end connections, e.g. multi-call or multi-bearer end-to-end data connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a reconfiguration method and related products.
  • LTE Long Term Evolution
  • DC Dual Connectivity
  • UE User Equipment
  • the LTE PDCP and the NR PDCP may be used for the Packet Data Convergence Protocol (PDCP) layer on the LTE side.
  • PDCP Packet Data Convergence Protocol
  • the currently available solution is to reset all bearers based on the handover procedure.
  • the embodiment of the present invention provides a reconfiguration method and related products, which can prevent other bearers from being affected by changes in the PDCP layer, thereby ensuring data continuity of other services.
  • an embodiment of the present invention provides a reconfiguration method, including:
  • the user equipment receives a reconfiguration instruction from the network device, the reconfiguration instruction being used to indicate reconfiguration of the PDCP layer;
  • the user equipment reconfigures the PDCP layer and sends an end flag (EM).
  • an embodiment of the present invention provides a reconfiguration method, including:
  • the network device sends a reconfiguration command, where the reconfiguration command is used to instruct the user equipment to reconfigure the PDCP layer;
  • the network device receives an EM from the user equipment.
  • an embodiment of the present invention provides a reconfiguration method, including:
  • the user equipment receives a reconfiguration instruction from the network device, the reconfiguration instruction being used to indicate reconfiguration of the PDCP layer;
  • the user equipment reconfigures the PDCP layer and receives EMs from the network device.
  • an embodiment of the present invention provides a reconfiguration method, including:
  • the network device sends a reconfiguration command, where the reconfiguration command is used to instruct the user equipment to reconfigure the PDCP layer;
  • the network device sends the EM.
  • an embodiment of the present invention provides a user equipment, including a processing unit and a communication unit, where:
  • the processing unit is configured to receive, by the communication unit, a reconfiguration instruction from a network device, where the reconfiguration instruction is used to indicate reconfiguration of a PDCP layer; reconfigure a PDCP layer, and send by using the communication unit EM.
  • an embodiment of the present invention provides a network device, including a processing unit and a communication unit, where:
  • the processing unit is configured to send, by using the communications unit, a reconfiguration command, the reconfiguration command is used to instruct the user equipment to reconfigure the PDCP layer, and the EM from the user equipment is received by the communications unit.
  • a seventh aspect of the present invention provides a user equipment, including a processing unit and a communication unit, where:
  • the processing unit is configured to receive, by the communication unit, a reconfiguration instruction from a network device, where the reconfiguration instruction is used to indicate reconfiguration of a PDCP layer; reconfigure a PDCP layer, and receive by the communication unit EM from the network device.
  • an embodiment of the present invention provides a network device, including a processing unit and a communication unit, where:
  • the processing unit is configured to send, by using the processing unit, a reconfiguration instruction, where the reconfiguration command is used to instruct the user equipment to reconfigure the PDCP layer; and send the EM through the communication unit.
  • an embodiment of the present invention provides a user equipment, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory, and are configured by The processor executes, the program comprising instructions for performing the steps in the method as described in the first aspect of the embodiments of the invention.
  • an embodiment of the present invention provides a network device, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured by Executed by the processor, the program includes a second party for performing an embodiment of the present invention The instructions of the steps in the method described.
  • an embodiment of the present invention provides a user equipment, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured Executed by the processor, the program includes instructions for performing the steps in the method as described in the third aspect of the embodiments of the present invention.
  • an embodiment of the present invention provides a network device, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured Executed by the processor, the program includes instructions for performing the steps in the method as described in the fourth aspect of the embodiments of the present invention.
  • the embodiment of the present invention provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute an embodiment of the present invention
  • the computer includes a user equipment.
  • embodiments of the present invention provide a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute an embodiment of the present invention
  • the computer includes a network device.
  • an embodiment of the present invention provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute an embodiment of the present invention.
  • the computer includes a user equipment.
  • an embodiment of the present invention provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute an embodiment of the present invention.
  • the computer includes a network device.
  • an embodiment of the present invention provides a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform the present invention Some or all of the steps described in the first aspect of the embodiment.
  • the computer program product can be a software installation package, and the computer includes the user equipment.
  • an embodiment of the present invention provides a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform the present invention Some or all of the steps described in the second aspect of the embodiment.
  • the computer program product can be a software installation package, and the computer includes a network device.
  • the embodiment of the present invention provides a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform the present invention Some or all of the steps described in the third aspect of the embodiment.
  • the computer program product can be a software installation package, and the computer includes the user equipment.
  • an embodiment of the present invention provides a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform the present invention Some or all of the steps described in the fourth aspect of the embodiment.
  • the computer program product can be a software installation package, and the computer includes a network device.
  • FIG. 1 is a schematic diagram of a protocol stack structure according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a network architecture according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a reconfiguration method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an EM format defined by an existing LTE according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a status report format of an LTE according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of a format of a NR status report according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart diagram of another reconfiguration method according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of another network device according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of another network device according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of another network device according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of another user equipment according to an embodiment of the present invention.
  • references to "an embodiment” herein mean that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present application.
  • the appearances of the phrases in various places in the specification are not necessarily referring to the same embodiments, and are not exclusive or alternative embodiments that are mutually exclusive. Those skilled in the art will understand and implicitly understand that the embodiments described herein can be combined with other embodiments.
  • the user equipment can maintain the connection with LTE and the NR system at the same time.
  • the protocol stack structure is shown in Figure 1, where the master node (MN) and the secondary node
  • the slave nodes (SN) are LTE and NR, respectively.
  • the physical layer (PHY) layer, the media access control layer (MAC), and the radio link layer control protocol (RLC) layer are all LTE versions.
  • PHY physical layer
  • MAC media access control layer
  • RLC radio link layer control protocol
  • LTE PDCP cannot be carried on the NR RLC, so there is a need to use NR PDCP, but considering the adaptability of LTE PDCP to voice services and the reason that LTE PDCP is suitable as the initial configuration during initial access, LTE PDCP also has its necessity. Sex. In order to achieve configurability of LTE PDCP and NR PDCP, the currently available solution is to reset all bearers based on the handover procedure. However, considering that the reconfiguration of PDCP may only involve individual bearers, if all bearers are interrupted due to resetting the PDCP layer, the data continuity of all services will be affected.
  • the (Master Cell Group, MCG) Bearer is the primary cell group bearer
  • the MCG Split Bearer is the primary cell component fork bearer
  • the (Secondary Cell Group, SCG) Bearer is the secondary cell group bearer, supplemented by SCG Split Bearer.
  • the cell component is carried by the fork.
  • FIG. 2 is a schematic diagram of a network architecture disclosed in an embodiment of the present application.
  • the network architecture shown in FIG. 2 includes user equipment 110 and network equipment 120.
  • the network device 120 sends a reconfiguration instruction for indicating reconfiguration of the PDCP layer;
  • the user equipment 110 receives a reconfiguration instruction from the network device 120, and then the user equipment 110 The PDCP layer is reconfigured, and finally the user equipment 110 sends an End-marker (EM).
  • EM End-marker
  • the network device 120 transmits a reconfiguration instruction for indicating reconfiguration of the PDCP layer; the user equipment 110 receives a reconfiguration instruction from the network device 120, and then The user equipment 110 reconfigures the PDCP layer, and finally the user equipment 110 receives the EM from the network device 120.
  • the network device 120 transmits a reconfiguration instruction for indicating reconfiguration of the PDCP layer; the user equipment 110 receives a reconfiguration instruction from the network device 120, and then The user equipment 110 reconfigures the PDCP layer, and finally the user equipment 110 receives the EM from the network device 120.
  • the user equipment is a device that provides voice and/or data connectivity to the user, for example, Handheld devices, in-vehicle devices, etc. with wireless connectivity.
  • Common user devices include, for example, mobile phones, tablets, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, smart bracelets, pedometers, and the like.
  • the network device refers to a node device on the network side.
  • the network device may be a radio access network (RAN) device on the access network side of the cellular network, and the so-called RAN device is a device device.
  • the device that enters the wireless network including but not limited to: an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), and a base station controller (Base) Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (for example, Home evolved NodeB, or Home Node B, HNB), Baseband Unit (BBU), and Management Entity (Mobility Management Entity, MME);
  • the network device may also be a node device in a Wireless Local Area Network (WLAN), such as an access controller (AC), a gateway, or a WIFI access point (Access Point, AP). )Wait.
  • WLAN Wireless Local Area Network
  • AC access controller
  • AP WIFI access point
  • FIG. 3 is a schematic flowchart of a reconfiguration method according to an embodiment of the present application, including the following steps:
  • Step S301 The network device sends a reconfiguration command, where the reconfiguration command is used to instruct the user equipment to reconfigure the PDCP layer.
  • the re-configuration command may be sent by the network device to the user equipment, or the network device may send the reconfiguration command to the user equipment by using the other device, which is not limited herein.
  • the reconfiguration command may include at least one of the following: a key, an integrity check information parameter, a related parameter of the transition between the LTE PDCP and the NR PDCP, and the like.
  • Integrity check refers to the method of verifying data integrity with a specified algorithm to ensure data integrity.
  • the integrity check information parameter refers to the variables and set values in the check algorithm.
  • Step S302 The user equipment receives a reconfiguration instruction from the network device; the user equipment reconfigures the PDCP layer.
  • the user equipment reconfigures the PDCP layer, specifically: when the current PDCP layer of the user equipment is the LTE PDCP, the user equipment uses the relevant parameters of the NR PDCP to the PDCP. The layer switches from LTE PDCP to NR PDCP. Or, when the reconfiguration command includes the LTE PDCP related parameter, the user equipment reconfigures the PDCP layer, where the user equipment performs the PDCP layer according to the relevant parameters of the LTE PDCP when the current PDCP layer of the user equipment is the NR PDCP. Switch from NR PDCP to LTE PDCP.
  • Step S303 The user equipment sends the EM; the network equipment receives the EM from the user equipment.
  • the EM is a special data packet, and the EM is used to indicate that the data on the source side (in this case, the user equipment side) ends. If the user equipment switches the PDCP layer from the LTE PDCP to the NR PDCP, the user equipment sends an EM indicating that the LTE PDCP PDU of the user equipment ends. If the user equipment switches the PDCP layer from NR PDCP to LTE PDCP, the user equipment sends EM to indicate that the NR PDCP PDU of the user equipment ends.
  • the method further includes:
  • the user equipment performs a reset process, including a reset compression algorithm (ROHC), a reset protocol data unit (PDU) sequence number (SN), and a reset super frame number (Hyper Frame Number). At least one of HFN).
  • ROHC reset compression algorithm
  • PDU reset protocol data unit
  • SN reset protocol data unit
  • Hyper Frame Number At least one of HFN).
  • the method further includes: after the user equipment sends the EM, the method further includes:
  • the user equipment performs a reset process, where the reset process includes a reset compression algorithm (ROHC), At least one of a PDU sequence number (SN) and a reset superframe number (HFN) is reset.
  • ROHC reset compression algorithm
  • SN PDU sequence number
  • HFN reset superframe number
  • the reset compression algorithm refers to restoring the compression algorithm to the initial state.
  • the specific implementation manner in which the user equipment restores the compression algorithm to the initial state can refer to the existing practice, and will not be described here.
  • resetting the PDU sequence number refers to restoring the PDU sequence number to the initial state. For example, if the current user equipment is sent from the PDU sequence number 0 to the PDU sequence number 10, the PDU sequence number is restored to the initial state, that is, the PDU sequence number of the user equipment is restored to the PDU sequence number 0.
  • resetting the superframe number refers to restoring the superframe number to the initial state.
  • the superframe number refers to a counter overflow mechanism for limiting the number of sequence number bits transmitted through the wireless interface.
  • the superframe number is a counter that is large enough to limit the number of bits of the serial number sent by the wireless interface by the superframe number when transmitting the serial number sent by the user interface and the network device, and restore the superframe number to The initial state refers to clearing the counter.
  • the method further includes:
  • the network device sends a status report; the user equipment receives a status report from the network device; the user equipment sends a PDU according to the status report.
  • the status report is used to indicate that the receiving end side (in the present embodiment, the network device side) has received the EM sent by the sending end side (in the present embodiment, the user equipment side).
  • the user equipment After the user equipment receives the status report from the network device, after the user equipment knows that the network device has received the EM, the user equipment sends a PDU to the network device, so that the PDU sent by the user equipment is synchronized with the mode of the user equipment. For example, after the user equipment switches from LTE PDCP to NR PDCP, after the user equipment receives the status report, the user equipment sends an NR PDCP PDU to the network device.
  • the reconfiguration instructions include a key and/or an integrity check information parameter, the method further comprising:
  • the user equipment performs encryption processing on the PDU to be sent according to the key; and/or the user equipment performs integrity verification processing on the PDU to be sent according to the integrity check information parameter; the user The device sends the processed PDU; the network device receives the PDU sent by the user equipment; the network device encrypts the received PDU according to the key; and/or the network device receives the integrity check information parameter according to the The received PDU is subjected to integrity check processing.
  • the user equipment needs to send the PDU according to the integrity check information parameter.
  • the integrity check processing is performed. Specifically, the user equipment calculates the integrity check code by using the key provided by the upper layer, and then attaches the integrity check code to the PDCP PDU and sends the integrity check code together.
  • the method further includes:
  • the user equipment sends an LTE PDCP PDU from a PDCP layer of the user equipment to an LTE side RLC layer of the user equipment.
  • the user equipment sends a PDU before step S301 or after step S303.
  • the LTE PDCP PDU is sent from the PDCP layer of the user equipment to the LTE side RLC layer of the user equipment, and the LTE side RLC layer of the user equipment sends the LTE PDCP PDU to enable the LTE PDCP PDU to be sent.
  • the user equipment may be sent from the PDCP layer of the user equipment to the LTE side RLC layer of the user equipment, or may be sent from the PDCP layer of the user equipment to the NR side RLC layer of the user equipment, which is not limited herein.
  • Error 1 The PDCP PDU of 5G/NR arrives at the receiving PDCP entity before the EM; Error 2: The PDCP PDU of LTE arrives at the receiving PDCP entity after the EM.
  • the RLC layer on the LTE side can implement in-order delivery, only the PDCP PDUs of EM and LTE are submitted to the LTE RLC layer, and this operation can solve the problem of error 2.
  • error 1 it is considered that the RLC layer on the NR side cannot implement the in-order delivery.
  • the transmitted PDCP entity only needs to ensure that the LTE PDCP PDU is not transmitted to the NR side RLC.
  • the received PDCP entity will only process the PDCP PDU from the RL side RLC layer as an NR PDCP PDU.
  • the version of the PDCP is changed from LTE to NR, even if any NR PDCP PDU arrives at the PDCP entity before the EM, the NR PDCP PDU is not treated as an LTE PDCP PDU and then erroneously processed.
  • the user equipment sends the EM specifically:
  • the user equipment sends the EM from the PDCP layer of the user equipment to the LTE side RLC layer of the user equipment.
  • the user equipment sends the EM and the user equipment sends the LTE PDCP PDU, and the user equipment is only sent from the PDCP layer of the user equipment to the LTE side RLC layer of the user equipment, and the LTE side RLC layer of the user equipment sends the EM downward, so that Send the EM to the network device side.
  • the EM does not include an LSN domain, and the EM includes a PDU type (type) Different from the PDU type included in the EM defined in the LTE protocol; or the EM includes an LSN domain, and the LSN domain included in the EM is set to a set value.
  • PDU type type
  • the LSN domain included in the EM is set to a set value.
  • the EM format defined by the existing LTE is as shown in FIG. 4.
  • the LSN is the sequence number of the last PDU before the EM is sent.
  • the EM in this solution may not include the LSN domain to save data overhead.
  • the EM in this solution needs to redefine a PDU type to distinguish the existing LTE protocol.
  • the PDU type included in the EM is defined as PDU type1.
  • the PDU type included in the EM in this solution is PDU type2, and PDU type1 is different from PDU type2.
  • the EM in this scheme can continue to use the LSN domain, and the LSN domain is all set to the set value. For example, if both are set to 0 or both are set to 1, in this mode, since the LSN fields are all set to the set value, they are already distinguished from the EM defined in the existing LTE protocol, so there is no need to re-assign a PDU type to distinguish the present There are EMs defined in the LTE protocol.
  • the format used by the status report is the format of the NR PDCP status report; or, when the PDCP layer reconfiguration is changed from the NR PDCP to the LTE PDCP
  • the format used by the status report is the format of the LTE PDCP status report.
  • the format of LTE is as shown in FIG. 5.
  • the format of the NR is shown in Figure 6.
  • the format of NR PDCP status report is used, where NR PDCP status report contains the count value (COUNT).
  • the COUNT can be obtained from the COUNT value of the packet transmitted by the LTE PDCP, or it can be zeroed or not including COUNT (this requires an additional definition of the PDU type).
  • the format of LTE PDCP status report is used; wherein LTE PDCP status report contains SN value, where SN value is obtained by SN PDCP transmitted packet SN value, or is set to zero, or does not include SN value (this requires an additional definition of the PDU type).
  • COUNT is by HFN and PDCP SN composition.
  • the format used by the EM is the format of the LTE PDCP EM; or, when the PDCP layer reconfiguration is changed from the NR PDCP to the LTE PDCP, the format used by the EM is the format of NR PDCP EM.
  • the LTE PDCP EM includes an LSN domain, the NR PDCP EM does not include an LSN domain, or the NR PDCP EM includes a COUNT value.
  • FIG. 7 is a schematic flowchart of a reconfiguration method according to an embodiment of the present application, including the following steps:
  • Step S701 The network device sends a reconfiguration command, where the reconfiguration command is used to instruct the user equipment to reconfigure the PDCP layer.
  • the re-configuration command may be sent by the network device to the user equipment, or the network device may send the reconfiguration command to the user equipment by using the other device, which is not limited herein.
  • the reconfiguration command may include at least one of the following: a key, an integrity check information parameter, a related parameter of the transition between the LTE PDCP and the NR PDCP, and the like.
  • Integrity check refers to the method of verifying data integrity with a specified algorithm to ensure data integrity.
  • the integrity check information parameter refers to the variables and set values in the check algorithm.
  • Step S702 The user equipment receives a reconfiguration instruction from the network device; the user equipment reconfigures the PDCP layer.
  • the user equipment reconfigures the PDCP layer, specifically: when the current PDCP layer of the user equipment is the LTE PDCP, the user equipment uses the relevant parameters of the NR PDCP to the PDCP. The layer switches from LTE PDCP to NR PDCP. Or, when the reconfiguration command includes the LTE PDCP related parameter, the user equipment reconfigures the PDCP layer, where the user equipment performs the PDCP layer according to the relevant parameters of the LTE PDCP when the current PDCP layer of the user equipment is the NR PDCP. Switch from NR PDCP to LTE PDCP.
  • Step S703 The network device sends an EM; the user equipment receives an EM from the network device.
  • the EM is a special data packet, and the EM is used to indicate that the data on the source side (in this case, the network device side) ends.
  • the user equipment receives from the network device before the EM, the method further includes:
  • the user equipment performs a reset process, where the reset process includes a reset compression algorithm (ROHC), at least one of a reset protocol data unit (PDU) sequence number (SN) and a reset superframe number (HFN) .
  • ROHC reset compression algorithm
  • PDU reset protocol data unit
  • SN reset protocol data unit
  • HFN reset superframe number
  • the method further includes:
  • the user equipment performs a reset process including a reset compression algorithm (ROHC), resetting at least one of a PDU sequence number (SN) and a reset superframe number (HFN).
  • ROHC reset compression algorithm
  • SN PDU sequence number
  • HFN reset superframe number
  • the reset compression algorithm refers to restoring the compression algorithm to the initial state.
  • the specific implementation manner in which the user equipment restores the compression algorithm to the initial state can refer to the existing practice, and will not be described here.
  • resetting the PDU sequence number refers to restoring the PDU sequence number to the initial state. For example, if the current user equipment is sent from the PDU sequence number 0 to the PDU sequence number 10, the PDU sequence number is restored to the initial state, that is, the PDU sequence number of the user equipment is restored to the PDU sequence number 0.
  • resetting the superframe number refers to restoring the superframe number to the initial state.
  • the superframe number refers to a counter overflow mechanism for limiting the number of sequence number bits transmitted through the wireless interface. This superframe number is a sufficiently large counter, the serial number sent between the user equipment and the network device on the sending and wireless interfaces. When the number of bits of the serial number transmitted by the wireless interface is limited by the super frame number, restoring the super frame number to the initial state means that the counter is cleared.
  • the method further includes:
  • the user equipment sends a status report to the network device, where the status report is used by the network device to determine a PDU sent to the user equipment; the network device receives a status report from the user equipment; the network device is configured according to The status report sends a PDU.
  • the status report is used to indicate that the receiving end side (in the present embodiment, the user equipment side) has received the EM sent by the sending end side (in this case, the network equipment side).
  • the network device After the network device receives the status report from the user equipment, after the network device knows that the network device has received the EM, the network device sends the PDU to the user equipment, so that the PDU sent by the network device is synchronized with the mode of the network device.
  • the reconfiguration instructions include a key and/or an integrity check parameter, the method further comprising:
  • the network device performs encryption processing on the PDU to be sent according to the key; and/or, the network device performs integrity verification processing on the received PDU according to the integrity check parameter;
  • the network device sends the processed PDU
  • the user equipment receives a PDU from the network device
  • the user equipment performs decryption processing on the received PDU according to the key; and/or, the user equipment performs integrity verification processing on the received PDU according to the integrity check parameter.
  • the user equipment performs integrity check processing on the PDU to be sent according to the integrity check information parameter, where the user equipment calculates the integrity check code by using the key provided by the upper layer, and then completes the integrity check code according to the integrity.
  • the checksum code performs an integrity check code comparison on the received PDCP PDU. If the integrity check code corresponds, the integrity check is completed successfully.
  • the EM does not include an LSN domain, and the EM includes a PDU type different from a PDU type included in an EM defined in an LTE protocol; or the EM includes an LSN domain, and the EM includes an LSN domain.
  • Set the set value the set value.
  • the EM format defined by the existing LTE is as shown in FIG. 4.
  • the LSN is the sequence number of the last PDU before the EM is sent.
  • the EM in this solution may not include the LSN domain to save data overhead.
  • the EM in this solution needs to redefine a PDU type to distinguish the existing LTE protocol.
  • the PDU type included in the EM is defined as PDU type1.
  • the PDU type included in the EM in this solution is PDU type2, and PDU type1 is different from PDU type2.
  • the EM in this scheme can continue to use the LSN domain, and the LSN domain is all set to the set value. For example, if both are set to 0 or both are set to 1, in this mode, since the LSN fields are all set to the set value, they are already distinguished from the EM defined in the existing LTE protocol, so there is no need to re-assign a PDU type to distinguish the present There are EMs defined in the LTE protocol.
  • the format used by the status report is the format of the NR PDCP status report; or, when the PDCP layer reconfiguration is changed from the NR PDCP to the LTE PDCP
  • the format used by the status report is the format of the LTE PDCP status report.
  • the format of LTE is as shown in FIG. 5.
  • the format of the NR is shown in Figure 6.
  • the format of NR PDCP status report is used, where NR PDCP status report contains the count value (COUNT).
  • the COUNT can be obtained from the COUNT value of the packet transmitted by the LTE PDCP, or it can be zeroed or not including COUNT (this requires an additional definition of the PDU type).
  • the format of LTE PDCP status report is used; wherein LTE PDCP status report contains SN value, where SN value is obtained by SN PDCP transmitted packet SN value, or is set to zero, or does not include SN value (this requires an additional definition of the PDU type).
  • COUNT is composed of HFN and PDCP SN.
  • the format used by the EM is the format of the LTE PDCP EM; or, when the PDCP layer reconfiguration is changed from the NR PDCP to the LTE PDCP, the format used by the EM is the format of NR PDCP EM.
  • the LTE PDCP EM includes an LSN domain, and the NR PDCP EM does not include an LSN domain, or The NR PDCP EM includes a COUNT value.
  • FIG. 8 is a user equipment 800 according to an embodiment of the present invention, including: one or more processors, one or more memories, one or more transceivers, and one or more programs;
  • the one or more programs are stored in the memory and configured to be executed by the one or more processors;
  • the program includes instructions for performing the following steps:
  • PDCP Packet Data Convergence Protocol
  • the program includes also for performing the following before transmitting the EM Instructions for the steps:
  • a reset process is performed, the reset process including a reset compression algorithm (ROHC), resetting at least one of a protocol data unit (PDU) sequence number (SN) and a reset superframe number (HFN).
  • ROHC reset compression algorithm
  • PDU protocol data unit
  • SN protocol data unit sequence number
  • HFN reset superframe number
  • the program includes instructions that are also used to perform the following steps:
  • a reset process is performed, the reset process including a reset compression algorithm (ROHC), resetting at least one of a PDU sequence number (SN) and a reset superframe number (HFN).
  • ROHC reset compression algorithm
  • SN PDU sequence number
  • HFN reset superframe number
  • the program after performing the reset process, includes instructions that are also used to perform the following steps:
  • the reconfiguration instructions include a key and/or integrity check information parameters, the program including instructions that are also used to perform the following steps:
  • the program includes instructions that are also used to perform the following steps:
  • the LTE PDCP PDU is transmitted from the PDCP layer of the user equipment to the LTE side RLC layer of the user equipment.
  • the program includes instructions specifically for performing the step of transmitting an EM from a PDCP layer of the user equipment to an LTE side RLC layer of the user equipment.
  • the EM does not include an LSN domain, the EM includes a PDU type different from a PDU type included in an EM defined in an LTE protocol; or the EM includes an LSN domain, and the EM includes The LSN fields are set to the set value.
  • the format used by the status report is the format of the NR PDCP status report; or, when the PDCP layer reconfiguration is changed from the NR PDCP to the LTE PDCP
  • the format used by the status report is the format of the LTE PDCP status report.
  • the format used by the EM is the format of the LTE PDCP EM; or, when the PDCP layer reconfiguration is changed from the NR PDCP to the LTE PDCP, the format used by the EM is the format of NR PDCP EM.
  • FIG. 9 is a network device 900 according to an embodiment of the present invention, including: one or more processors, one or more memories, one or more transceivers, and one or more programs;
  • the one or more programs are stored in the memory and configured to be executed by the one or more processors;
  • the program includes instructions for performing the following steps:
  • the program includes instructions that are also used to perform the following steps:
  • the status report is used by the user equipment to determine a PDU sent to the network device.
  • the reconfiguration instructions include a key and/or integrity check information parameters, the program including instructions that are also used to perform the following steps:
  • the EM does not include an LSN domain, the EM includes a PDU type different from a PDU type included in an EM defined in an LTE protocol; or the EM includes an LSN domain, and the EM includes The LSN fields are set to the set value.
  • the format used by the status report is the format of the NR PDCP status report; or, when the PDCP layer reconfiguration is changed from the NR PDCP to the LTE PDCP
  • the format used by the status report is the format of the LTE PDCP status report.
  • the format used by the EM is the format of the LTE PDCP EM; or, when the PDCP layer reconfiguration is changed from the NR PDCP to the LTE PDCP, the format used by the EM is the format of NR PDCP EM.
  • FIG. 10 is a user equipment 1000 according to an embodiment of the present invention, including: one or more processors, one or more memories, one or more transceivers, and one or more programs;
  • the one or more programs are stored in the memory and configured to be executed by the one or more processors;
  • the program includes instructions for performing the following steps:
  • the procedure is before receiving the EM from the network device.
  • a reset process is performed, the reset process including a reset compression algorithm (ROHC), resetting at least one of a protocol data unit (PDU) sequence number (SN) and a reset superframe number (HFN).
  • ROHC reset compression algorithm
  • PDU protocol data unit
  • SN protocol data unit sequence number
  • HFN reset superframe number
  • the program when the EM is only defined in the NR PDCP protocol, and the user equipment PDCP layer reconfiguration is NR PDCP change to LTE PDCP, or when the EM is in both the NR PDCP protocol and the LTE PDCP protocol, the program includes instructions that are also used to perform the following steps:
  • a reset process is performed, the reset process including a reset compression algorithm (ROHC), resetting at least one of a PDU sequence number (SN) and a reset superframe number (HFN).
  • ROHC reset compression algorithm
  • SN PDU sequence number
  • HFN reset superframe number
  • the program after performing the reset process, includes instructions that are also used to perform the following steps:
  • the status report is used by the network device to determine a PDU sent to the user equipment.
  • the reconfiguration instructions include a key and/or integrity check parameter
  • the program including instructions that are also used to perform the following steps:
  • the EM does not include an LSN domain, and the EM includes a PDU type different from a PDU type included in an EM defined in an LTE protocol; or the EM includes an LSN domain, and the EM includes an LSN domain.
  • Set the set value the set value.
  • the format used by the status report is the format of the NR PDCP status report; or, when the PDCP layer reconfiguration is changed from the NR PDCP to the LTE PDCP
  • the format used by the status report is The format of the LTE PDCP status report.
  • the format used by the EM is the format of the LTE PDCP EM; or, when the PDCP layer reconfiguration is changed from the NR PDCP to the LTE PDCP, the format used by the EM is the format of NR PDCP EM.
  • FIG. 11 is a network device 1100 according to an embodiment of the present invention, including: one or more processors, one or more memories, one or more transceivers, and one or more programs;
  • the one or more programs are stored in the memory and configured to be executed by the one or more processors;
  • the program includes instructions for performing the following steps:
  • the program includes instructions that are also used to perform the following steps:
  • the reconfiguration instructions include a key and/or integrity check parameter
  • the program including instructions that are also used to perform the following steps:
  • the EM does not include an LSN domain, and the EM includes a PDU type different from a PDU type included in an EM defined in an LTE protocol; or the EM includes an LSN domain, and the EM includes an LSN domain.
  • Set the set value the set value.
  • the format used by the status report is the format of the NR PDCP status report; or, when the PDCP layer reconfiguration is changed from the NR PDCP to the LTE PDCP
  • the format used by the status report is the format of the LTE PDCP status report.
  • the format used by the EM is the format of the LTE PDCP EM; or, when the PDCP layer reconfiguration is changed from the NR PDCP to the LTE PDCP, the format used by the EM is the format of NR PDCP EM.
  • FIG. 12 is a schematic structural diagram of a user equipment 1200 according to this embodiment.
  • the user equipment 1200 includes a processing unit 1201, a communication unit 1202, and a storage unit 1203, where:
  • the processing unit 1201 is configured to receive, by the communication unit 1202, a reconfiguration instruction from a network device, where the reconfiguration instruction is used to indicate reconfiguration of a PDCP layer; reconfigure a PDCP layer, and pass the communication Unit 1202 sends the EM.
  • the processing unit 1201 may be a processor or a controller, and may be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application specific integrated circuit (Application- Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof, which may be implemented or executed in conjunction with the present disclosure.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC Application- Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 1202 may be a transceiver, a transceiver circuit, a radio frequency chip, a communication interface, etc.
  • the storage unit 1203 may be a memory.
  • the processing unit 1201 is a processor
  • the communication unit 1202 is a communication interface
  • the storage unit 1203 is a memory
  • the user equipment involved in the embodiment of the present invention may be the user equipment shown in FIG. 8.
  • FIG. 13 is a schematic structural diagram of a network device 1300 according to this embodiment.
  • the network device 1300 includes a processing unit 1301, a communication unit 1302, and a storage unit 1303, where:
  • the processing unit 1301 is configured to send, by using the communication unit 1302, a reconfiguration instruction, where the reconfiguration command is used to indicate that the user equipment reconfigures the PDCP layer, and the EM from the user equipment is received by the communication unit 1302. .
  • the processing unit 1301 may be a processor or a controller, and may be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application specific integrated circuit (Application- Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof, which may be implemented or executed in conjunction with the present disclosure.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC Application- Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 1302 may be a transceiver, a transceiver circuit, a radio frequency chip, a communication interface, etc.
  • the storage unit 1303 may be a memory.
  • the processing unit 1301 is a processor
  • the communication unit 1302 is a communication interface
  • the storage unit 1303 is a memory
  • the user equipment involved in the embodiment of the present invention may be the network device shown in FIG.
  • FIG. 14 is a schematic structural diagram of a user equipment 1400 according to this embodiment.
  • the user equipment 1400 includes a processing unit 1401, a communication unit 1402, and a storage unit 1403, where:
  • the processing unit 1401 is configured to receive, by the communication unit 1402, a reconfiguration instruction from a network device, where the reconfiguration instruction is used to indicate reconfiguration of the PDCP layer; reconfigure the PDCP layer, and pass the communication Unit 1402 receives the EM from the network device.
  • the processing unit 1401 may be a processor or a controller, and may be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application specific integrated circuit (Application- Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof, which may be implemented or executed in conjunction with the present disclosure.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC Application- Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the processor may also be a combination of computing functions, for example comprising one or more microprocessor combinations, DSP and micro Combination of processors, etc.).
  • the communication unit 1402 may be a transceiver, a transceiver circuit, a radio frequency chip, a communication interface, etc.
  • the storage unit 1403 may be a memory.
  • the processing unit 1401 is a processor
  • the communication unit 1402 is a communication interface
  • the storage unit 1403 is a memory
  • the user equipment involved in the embodiment of the present invention may be the user equipment shown in FIG.
  • FIG. 15 is a schematic structural diagram of a network device 1500 according to this embodiment.
  • the network device 1500 includes a processing unit 1501, a communication unit 1502, and a storage unit 1503, where:
  • the processing unit 1501 is configured to send, by using the processing unit 1502, a reconfiguration instruction, where the reconfiguration command is used to instruct the user equipment to reconfigure the PDCP layer; and the EM is sent by the communication unit 1502.
  • the processing unit 1501 may be a processor or a controller, and may be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application specific integrated circuit (Application- Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof, which may be implemented or executed in conjunction with the present disclosure.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC Application- Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 1502 may be a transceiver, a transceiver circuit, a radio frequency chip, a communication interface, etc.
  • the storage unit 1503 may be a memory.
  • the processing unit 1501 is a processor
  • the communication unit 1502 is a communication interface
  • the storage unit 1503 is a memory
  • the user equipment involved in the embodiment of the present invention may be the network device shown in FIG.
  • the embodiment of the present invention further provides another user equipment.
  • FIG. 16 for the convenience of description, only parts related to the embodiment of the present invention are shown. If the specific technical details are not disclosed, refer to the method of the embodiment of the present invention. section.
  • the user equipment can be any user equipment including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), a car computer, and the like:
  • FIG. 16 is a block diagram showing a partial structure of a mobile phone related to a user equipment provided by an embodiment of the present invention.
  • the mobile phone includes: a radio frequency (RF) circuit 910, and a storage device.
  • RF radio frequency
  • WiFi Wireless Fidelity
  • the RF circuit 910 can be used for receiving and transmitting information.
  • RF circuit 910 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like.
  • LNA Low Noise Amplifier
  • RF circuitry 910 can also communicate with the network and other devices via wireless communication.
  • the above wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division). Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), E-mail, Short Messaging Service (SMS), and the like.
  • GSM Global System of Mobile communication
  • GPRS General Packet Radio Service
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • E-mail Short Messaging Service
  • the memory 920 can be used to store software programs and modules, and the processor 980 executes various functional applications and data processing of the mobile phone by running software programs and modules stored in the memory 920.
  • the memory 920 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function, and the like; the storage data area may store data created according to usage of the mobile phone, and the like.
  • memory 920 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • the input unit 930 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the handset.
  • the input unit 930 can include a fingerprint identification module 931 and other input devices 932.
  • the fingerprint identification module 931 can collect fingerprint data of the user.
  • the input unit 930 may also include other input devices 932.
  • other input devices 932 may include, but are not limited to, one or more of a touch screen, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.
  • the display unit 940 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone.
  • the display unit 940 can include a display screen 941, optionally, can use a liquid crystal display
  • the display screen 941 is configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
  • LCD Liquid Crystal Display
  • OLED Organic Light-Emitting Diode
  • the fingerprint recognition module 931 and the display screen 941 are used as two separate components to implement the input and input functions of the mobile phone, in some embodiments, the fingerprint recognition module 931 and the display screen 941 may be Integrated to achieve the input and playback functions of the phone.
  • the handset may also include at least one type of sensor 950, such as a light sensor, motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen 941 according to the brightness of the ambient light, and the proximity sensor may turn off the display screen 941 and/or when the mobile phone moves to the ear. Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity.
  • the mobile phone can be used to identify the gesture of the mobile phone (such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer Narration.
  • the gesture of the mobile phone such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration
  • vibration recognition related functions such as pedometer, tapping
  • the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer Narration.
  • An audio circuit 960, a speaker 961, and a microphone 962 can provide an audio interface between the user and the handset.
  • the audio circuit 960 can transmit the converted electrical data of the received audio data to the speaker 961 for conversion to the sound signal by the speaker 961; on the other hand, the microphone 962 converts the collected sound signal into an electrical signal by the audio circuit 960. After receiving, it is converted into audio data, and then processed by the audio data playback processor 980, sent to the other mobile phone via the RF circuit 910, or played back to the memory 920 for further processing.
  • WiFi is a short-range wireless transmission technology
  • the mobile phone can help users to send and receive emails, browse web pages, and access streaming media through the WiFi module 970, which provides users with wireless broadband Internet access.
  • FIG. 16 shows the WiFi module 970, it can be understood that it does not belong to the essential configuration of the mobile phone, and can be omitted as needed within the scope of not changing the essence of the invention.
  • the processor 980 is the control center of the handset, which connects various portions of the entire handset using various interfaces and lines, by executing or executing software programs and/or modules stored in the memory 920, and invoking data stored in the memory 920, executing The phone's various functions and processing data, so that the overall monitoring of the phone.
  • the processor 980 may include one or more processing units; preferably, the processor 980 may integrate an application processor and a modem processor, where the application processor mainly processes operations. As a system, user interface, application, etc., the modem processor primarily handles wireless communications. It will be appreciated that the above described modem processor may also not be integrated into the processor 980.
  • the handset also includes a power source 990 (such as a battery) that supplies power to the various components.
  • a power source 990 such as a battery
  • the power source can be logically coupled to the processor 980 through a power management system to manage functions such as charging, discharging, and power management through the power management system.
  • the mobile phone may further include a camera, a Bluetooth module, and the like, and details are not described herein again.
  • the flow of the user equipment side in each step method may be implemented based on the structure of the mobile phone.
  • each unit function can be implemented based on the structure of the mobile phone.
  • the embodiment of the present invention further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute a user in the method embodiment as described above Some or all of the steps described by the device.
  • Embodiments of the present invention also provide a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes a computer to execute a network as in the above method embodiment Some or all of the steps described by the device.
  • Embodiments of the present invention also provide a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform a user as in the above method Some or all of the steps described by the device.
  • the computer program product can be a software installation package.
  • the embodiment of the invention further provides a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform the method embodiment as described above Some or all of the steps described in the network device.
  • the computer program product can be a software installation package.
  • the steps of the method or algorithm described in the embodiments of the present invention may be implemented in a hardware manner, or may be implemented by a processor executing software instructions.
  • the software instructions may be composed of corresponding software modules, which may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory ( Erasable Programmable ROM, EPROM), electrically erasable programmable read-only memory Electrically EPROM (EEPROM), registers, hard disk, removable hard disk, compact disk read only (CD-ROM) or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the ASIC can be located in an access network device, a target network device, or a core network device.
  • the processor and the storage medium may also exist as discrete components in the access network device, the target network device, or the core network device.
  • the functions described in the embodiments of the present invention may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may 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 processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)). )Wait.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a digital video disc (DVD)
  • DVD digital video disc
  • SSD solid state disk

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Abstract

本发明实施例提供了一种重配置方法及相关产品，方法包括：用户设备接收来自网络设备的重配置指令，所述重配置指令用于指示对PDCP层进行重配置；所述用户设备对PDCP层进行重配置，以及发送EM。采用本发明实施例可避免由于PDCP层的变化影响其他承载，进而保证了其他业务的数据连续性。

Description

重配置方法及相关产品 技术领域
本发明涉及通信技术领域，具体涉及一种重配置方法及相关产品。
背景技术
在长期演进技术(Long Term Evolution，LTE)和双连接(Dual connectivity，DC)的系统构架中，用户设备(User Equipment，UE)可以同时保持与LTE和与NR系统的连接。在LTE和DC系统的协议栈结构中，在LTE侧对于分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层可能既可以使用LTE PDCP又可以使用NR PDCP。为了实现LTE PDCP和NR PDCP的可配置性，目前可用的方案是基于切换流程，重置所有承载。
发明内容
本发明实施例提供了一种重配置方法及相关产品，可以避免由于PDCP层的变化影响其他承载，进而保证了其他业务的数据连续性。
第一方面，本发明实施例提供一种重配置方法，包括：
用户设备接收来自网络设备的重配置指令，所述重配置指令用于指示对PDCP层进行重配置；
所述用户设备对PDCP层进行重配置，以及发送结束标志(EM)。
第二方面，本发明实施例提供一种重配置方法，包括：
网络设备发送重配置指令，所述重配置指令用于指示用户设备对PDCP层进行重配置；
所述网络设备接收来自所述用户设备的EM。
第三方面，本发明实施例提供一种重配置方法，包括：
用户设备接收来自网络设备的重配置指令，所述重配置指令用于指示对PDCP层进行重配置；
所述用户设备对PDCP层进行重配置，以及接收来自所述网络设备的EM。
第四方面，本发明实施例提供一种重配置方法，包括：
网络设备发送重配置指令，所述重配置指令用于指示用户设备对PDCP层进行重配置；
网络设备发送EM。
第五方面，本发明实施例提供一种用户设备，包括处理单元和通信单元，其中：
所述处理单元，用于通过所述通信单元接收来自网络设备的重配置指令，所述重配置指令用于指示对PDCP层进行重配置；对PDCP层进行重配置，以及通过所述通信单元发送EM。
第六方面，本发明实施例提供一种网络设备，包括处理单元和通信单元，其中：
所述处理单元，用于通过所述通信单元发送重配置指令，所述重配置指令用于指示用户设备对PDCP层进行重配置；通过所述通信单元接收来自所述用户设备的EM。
第七方面，本发明实施例提供一种用户设备，包括处理单元和通信单元，其中：
所述处理单元，用于通过所述通信单元接收来自网络设备的重配置指令，所述重配置指令用于指示对PDCP层进行重配置；对PDCP层进行重配置，以及通过所述通信单元接收来自所述网络设备的EM。
第八方面，本发明实施例提供一种网络设备，包括处理单元和通信单元，其中：
所述处理单元，用于通过所述处理单元发送重配置指令，所述重配置指令用于指示用户设备对PDCP层进行重配置；通过所述通信单元发送EM。
第九方面，本发明实施例提供一种用户设备，包括处理器、存储器、通信接口以及一个或多个程序，其中，所述一个或多个程序被存储在所述存储器中，并且被配置由所述处理器执行，所述程序包括用于执行如本发明实施例第一方面所描述的方法中的步骤的指令。
第十方面，本发明实施例提供一种网络设备，包括处理器、存储器、通信接口以及一个或多个程序，其中，所述一个或多个程序被存储在所述存储器中，并且被配置由所述处理器执行，所述程序包括用于执行如本发明实施例第二方 面所描述的方法中的步骤的指令。
第十一方面，本发明实施例提供一种用户设备，包括处理器、存储器、通信接口以及一个或多个程序，其中，所述一个或多个程序被存储在所述存储器中，并且被配置由所述处理器执行，所述程序包括用于执行如本发明实施例第三方面所描述的方法中的步骤的指令。
第十二方面，本发明实施例提供一种网络设备，包括处理器、存储器、通信接口以及一个或多个程序，其中，所述一个或多个程序被存储在所述存储器中，并且被配置由所述处理器执行，所述程序包括用于执行如本发明实施例第四方面所描述的方法中的步骤的指令。
第十三方面，本发明实施例提供了一种计算机可读存储介质，其中，上述计算机可读存储介质存储用于电子数据交换的计算机程序，其中，上述计算机程序使得计算机执行如本发明实施例第一方面所描述的部分或全部步骤，上述计算机包括用户设备。
第十四方面，本发明实施例提供了一种计算机可读存储介质，其中，上述计算机可读存储介质存储用于电子数据交换的计算机程序，其中，上述计算机程序使得计算机执行如本发明实施例第二方面所描述的部分或全部步骤，上述计算机包括网络设备。
第十五方面，本发明实施例提供了一种计算机可读存储介质，其中，上述计算机可读存储介质存储用于电子数据交换的计算机程序，其中，上述计算机程序使得计算机执行如本发明实施例第三方面所描述的部分或全部步骤，上述计算机包括用户设备。
第十六方面，本发明实施例提供了一种计算机可读存储介质，其中，上述计算机可读存储介质存储用于电子数据交换的计算机程序，其中，上述计算机程序使得计算机执行如本发明实施例第四方面所描述的部分或全部步骤，上述计算机包括网络设备。
第十七方面，本发明实施例提供了一种计算机程序产品，其中，上述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，上述计算机程序可操作来使计算机执行如本发明实施例第一方面所描述的部分或全部步骤。该计算机程序产品可以为一个软件安装包，上述计算机包括用户设备。
第十八方面，本发明实施例提供了一种计算机程序产品，其中，上述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，上述计算机程序可操作来使计算机执行如本发明实施例第二方面所描述的部分或全部步骤。该计算机程序产品可以为一个软件安装包，上述计算机包括网络设备。
第十九方面，本发明实施例提供了一种计算机程序产品，其中，上述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，上述计算机程序可操作来使计算机执行如本发明实施例第三方面所描述的部分或全部步骤。该计算机程序产品可以为一个软件安装包，上述计算机包括用户设备。
第二十方面，本发明实施例提供了一种计算机程序产品，其中，上述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，上述计算机程序可操作来使计算机执行如本发明实施例第四方面所描述的部分或全部步骤。该计算机程序产品可以为一个软件安装包，上述计算机包括网络设备。
本申请的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的一种协议栈结构的示意图；
图2是本发明实施例提供的一种网络构架的示意图；
图3是本发明实施例提供的一种重配置方法的流程示意图；
图4是本发明实施例提供的一种现有的LTE定义的EM格式示意图；
图5是本发明实施例提供的一种LTE的status report格式示意图；
图6是本发明实施例提供的一种NR的status report格式示意图；
图7是本发明实施例提供的另一种重配置方法的流程示意图；
图8是本发明实施例提供的一种用户设备的结构示意图；
图9是本发明实施例提供的一种网络设备的结构示意图；
图10是本发明实施例提供的另一种用户设备的结构示意图；
图11是本发明实施例提供的另一种网络设备的结构示意图；
图12是本发明实施例提供的另一种用户设备的结构示意图；
图13是本发明实施例提供的另一种网络设备的结构示意图；
图14是本发明实施例提供的另一种用户设备的结构示意图；
图15是本发明实施例提供的另一种网络设备的结构示意图；
图16是本发明实施例提供的另一种用户设备的结构示意图。
具体实施方式
为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本申请保护的范围。
以下分别进行详细说明。
本申请的说明书和权利要求书及所述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
下面结合附图对本申请的实施例进行描述。
在LTE和DC的系统架构中，用户设备可以同时保持与LTE和与NR系统的连接，其协议栈结构如图1所示，其中主节点(master node，MN)和副 节点(slave node，SN)分别为LTE和NR。在LTE一侧，其物理层(Physical layer，PHY)层、媒体介入控制层(Media Access Control，MAC)和无线链路层控制协议(Radio Link Control，RLC)层均为LTE版本。但是对于PDCP层，是否直接使用LTE版本的PDCP协议需要进一步考虑。LTE PDCP不能承载在NR RLC之上，所以有使用NR PDCP的需求，但考虑到LTE PDCP对于话音业务的适配性，以及初始接入时LTE PDCP适宜作为初始配置的原因，LTE PDCP也有其必要性。为了实现LTE PDCP和NR PDCP的可配置性，目前可用的方案是基于切换流程，重置所有承载。但考虑到PDCP的重配置可能只涉及到个别承载，如果因重置PDCP层而导致所有承载中断，会影响所有业务的数据连续性。其中，图1中，(Master Cell Group，MCG)Bearer为主小区组承载、MCG Split Bearer为主小区组分叉承载、(Secondary Cell Group，SCG)Bearer为辅小区组承载、SCG Split Bearer为辅小区组分叉承载。
请参阅图2，图2是本申请实施例公开的一种网络构架的示意图。图2所示的网络构架包括用户设备110和网络设备120。为了解决上述问题，在一示例中，网络设备120发送重配置指令，所述重配置指令用于指示对PDCP层进行重配置；用户设备110接收来自网络设备120的重配置指令，然后用户设备110对PDCP层进行重配置，最后用户设备110发送结束标志(End-marker，EM)。可见，在本方案中，在重配置PDCP层时，无需重置所有承载(比如无需重配置RLC层和MAC层，RLC层和MAC层保持现有传输)，只需重配置PDCP层即可，避免了由于PDCP层的变化影响其他承载，进而保证了其他业务的数据连续性。
另外，为了解决上述问题，在另一示例中，网络设备120发送重配置指令，所述重配置指令用于指示对PDCP层进行重配置；用户设备110接收来自网络设备120的重配置指令，然后用户设备110对PDCP层进行重配置，最后用户设备110接收来自网络设备120的EM。可见，在本方案中，在重配置PDCP层时，无需重置所有承载(比如无需重配置RLC层和MAC层，RLC层和MAC层保持现有传输)，只需重配置PDCP层即可，避免了由于PDCP层的变化影响其他承载，进而保证了其他业务的数据连续性。
其中，用户设备是一种向用户提供语音和/或数据连通性的设备，例如， 具有无线连接功能的手持式设备、车载设备等。常见的用户设备例如包括：手机、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，例如智能手表、智能手环、计步器等。
其中，网络设备是指网络侧的节点设备，例如，网络设备可以是蜂窝网络中接入网侧的无线接入网(Radio Access Network，RAN)设备，所谓RAN设备即是一种将用户设备接入到无线网络的设备，包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(Base Station Controller，BSC)、基站收发台(Base Transceiver Station,BTS)、家庭基站(例如，Home evolved NodeB，或Home Node B，HNB)、基带单元(BaseBand Unit，BBU)、管理实体(Mobility Management Entity，MME)；再如，网络设备也可以是无线局域网(Wireless Local Area Network，WLAN)中的节点设备，例如接入控制器(access controller，AC)，网关，或WIFI接入点(Access Point，AP)等。
下面结合图1所示的网络构架对本申请实施例提供的重配置方法进行详细说明。
请参见图3，图3为本申请实施例提供的一种重配置方法的流程示意图，包括以下步骤：
步骤S301：网络设备发送重配置指令，所述重配置指令用于指示用户设备对PDCP层进行重配置。
其中，网络设备发送重配置指令可以是网络设备直接向用户设备发送重配置指令，也可以是网络设备通过其他设备向用户设备发送重配置指令，在此不作限定。
其中，重配置指令可包括以下至少一种：密钥、完整性校验信息参数，LTE PDCP和NR PDCP之间转换的相关参数等等。完整性校验是指为保证数据的完整性，用一种指定的算法对数据完整性进行校验的方法。完整性校验信息参数是指校验算法中的变量和设定值。当PDCP层从LTE PDCP变化到NR PDCP时，LTE PDCP和NR PDCP之间转换的相关参数是NR PDCP的相关参数。当PDCP层从NR PDCP变化到LTE PDCP时，LTE PDCP和NR PDCP之间转换的相关参数是LTE PDCP的相关参数。
步骤S302：用户设备接收来自网络设备的重配置指令；用户设备对PDCP层进行重配置。
具体地，当所述重配置指令包括NR PDCP的相关参数时，用户设备对PDCP层进行重配置具体有：当用户设备当前的PDCP层是LTE PDCP时，用户设备根据NR PDCP的相关参数将PDCP层从LTE PDCP切换至NR PDCP。或者，当所述重配置指令包括LTE PDCP的相关参数时，用户设备对PDCP层进行重配置具体有：当用户设备当前的PDCP层是NR PDCP时,用户设备根据LTE PDCP的相关参数将PDCP层从NR PDCP切换至LTE PDCP。
步骤S303：用户设备发送EM；网络设备接收来自用户设备的EM。
其中，EM是一个特殊的数据包，EM用于表示发送源侧(本方案中指的是用户设备侧)的数据结束。假如用户设备将PDCP层从LTE PDCP切换至NR PDCP后，用户设备发送EM表示用户设备的LTE PDCP PDU结束。又假如用户设备将PDCP层从NR PDCP切换至LTE PDCP后，用户设备发送EM表示用户设备的NR PDCP PDU结束。
可见，在本方案中，在重配置PDCP层时，无需重置所有承载(比如无需重配置RLC层和MAC层，RLC层和MAC层保持现有传输)，只需重配置PDCP层即可，避免了由于PDCP层的变化影响其他承载，进而保证了其他业务的数据连续性。
在一示例中，当所述EM仅在NR PDCP协议中定义，且所述用户设备PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述用户设备发送EM之前，所述方法还包括：
所述用户设备进行重置处理，所述重置处理包括重置压缩算法(RObust Header Compression，ROHC)，重置协议数据单元(PDU)序列号(SN)和重置超帧号(Hyper Frame Number，HFN)中的至少一种。
在一示例中，当所述EM仅在NR PDCP协议中定义，且所述用户设备PDCP层重配置是NR PDCP变化到LTE PDCP时，或者当所述EM在NR PDCP协议和LTE PDCP协议中均定义时，所述用户设备发送EM之后，所述方法还包括：
所述用户设备进行重置处理，所述重置处理包括重置压缩算法(ROHC)， 重置PDU序列号(SN)和重置超帧号(HFN)中的至少一种。
其中，重置压缩算法(ROHC)指的是将压缩算法恢复至初始状态。用户设备将压缩算法恢复至初始状态的具体实施方式可参照现有做法，在此不作说明。
其中，重置PDU序列号指的是将PDU序列号恢复至初始状态。比如，当前用户设备从PDU序列号0发送到PDU序列号10，那么将PDU序列号恢复至初始状态也就是说把用户设备的PDU序列号恢复至PDU序列号0。
其中，重置超帧号指的是将超帧号恢复至初始状态。超帧号是指为了限制通过无线接口发送的序列号比特数的一种计数器溢出机制。这个超帧号就是一个足够大的计数器，用户设备和网络设备之间在发送和无线接口发送的序列号时，通过超帧号限制无线接口发送的序列号的比特数，将超帧号恢复至初始状态指的是把计数器清零。
在一示例中，所述用户设备进行重置处理之后，所述方法还包括：
网络设备发送状态报告(status report)；用户设备接收来自所述网络设备的status report；所述用户设备根据所述status report发送PDU。
具体地，所述status report用于表示接收端侧(本方案中指的是网络设备侧)已接收到发送端侧(本方案中指的是用户设备侧)发送的EM。用户设备接收到来自网络设备的status report后，用户设备知道网络设备已经接收到EM后，用户设备才给网络设备发送PDU，可使得用户设备发送的PDU与用户设备的模式同步。比如，用户设备从LTE PDCP切换至NR PDCP，那么用户设备接收到status report后，用户设备向网络设备发送NR PDCP PDU。
在一示例中，所述重配置指令包括密钥和/或完整性校验信息参数，所述方法还包括：
所述用户设备根据所述密钥对需要发送的PDU进行加密处理；和/或，所述用户设备根据所述完整性校验信息参数对需要发送的PDU进行完整性校验处理；所述用户设备发送处理后的PDU；网络设备接收来自用户设备发送的PDU；网络设备根据所述密钥对接收到的PDU进行加密处理；和/或，网络设备根据所述完整性校验信息参数对接收到的PDU进行完整性校验处理。
具体地，所述用户设备根据所述完整性校验信息参数对需要发送的PDU 进行完整性校验处理，具体有：用户设备使用上层提供的密钥计算出完整性校验码，然后将完整性校验码附着在PDCP PDU中，一起进行发送。
在一示例中，所述方法还包括：
所述用户设备将LTE PDCP PDU从所述用户设备的PDCP层发送至所述用户设备的LTE侧RLC层。
具体地，用户设备在步骤S301之前或是在步骤S303之后均会发送PDU。在本方案中，对于LTE PDCP PDU用户设备仅仅从用户设备的PDCP层发送至用户设备的LTE侧RLC层，用户设备的LTE侧RLC层将LTE PDCP PDU往下发，以使得将LTE PDCP PDU发送至网络设备侧。对于NR PDCP PDU用户设备可以从用户设备的PDCP层发送到用户设备的LTE侧RLC层，也可以从用户设备的PDCP层发送到用户设备的NR侧RLC层，在此不作限定。
由于LTE系统和5G/NR系统都是用不同的PDCP PDU格式，考虑到PDCP的版本从LTE系统更换到5G/NR系统，下面的错误事例应该被避免。错误1：5G/NR的PDCP PDU在EM前到达收端PDCP实体；错误2：LTE的PDCP PDU在EM后到达收端PDCP实体。考虑到LTE侧的RLC层可以实现按序递交，只把EM和LTE的PDCP PDU提交给LTE RLC层，这种操作能够解决错误2的问题。对于错误1，考虑到NR侧的RLC层不能实现按序递交，因此，发送的PDCP实体，只需要确保LTE PDCP PDU不会传输到NR侧RLC中。接收的PDCP实体，对于来自于NR侧RLC层的PDCP PDU只会作为NR PDCP PDU进行处理。通过这种方式，由于PDCP的版本从LTE变更为NR，即使任何NR PDCP PDU在EM前到达了PDCP实体，NR PDCP PDU也不会被当成是LTE PDCP PDU然后进行错误的处理。
在一示例中，所述用户设备发送EM具体有：
所述用户设备将EM从所述用户设备的PDCP层发送至所述用户设备的LTE侧RLC层。
具体地，用户设备发送EM和用户设备发送LTE PDCP PDU一样，用户设备仅仅从用户设备的PDCP层发送至用户设备的LTE侧RLC层，用户设备的LTE侧RLC层将EM往下发，以使得将EM发送至网络设备侧。
在一示例中，所述EM不包含LSN域，所述EM包含的PDU类型(type) 不同于LTE协议中定义的EM中包括的PDU type；或者，所述EM包含LSN域，所述EM包括的LSN域均置设定值。
具体地，现有的LTE定义的EM格式如图4所示。其中LSN为发送EM之前的最后一个PDU的序列号。在本方案中，由于LTE侧RLC可以提供按序传输，并且由于PDCP重置导致的SN长度变化导致无法实现无损重配，LSN变得不需要了。因此本方案中的EM可以不包括LSN域，以节省数据开销，在这种方式下，为了和带LSN域的EM共存，本方案中的EM需要重新定义一个PDU type以区别现有LTE协议中定义的EM中包括的PDU type，比如，现有LTE协议中定义的EM的PDU type为PDU type1，本方案中的EM中包括的PDU type为PDU type2，PDU type1不同于PDU type2。
另一种方式，本方案中的EM可以继续使用LSN域，当时该LSN域全部置为设定值。比如均置为0或均置为1，在这种方式下，由于LSN域全部置为设定值，已经跟现有LTE协议中定义的EM区分开，因此不需要重新一个PDU type来区分现有LTE协议中定义的EM。
在一示例中，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述status report使用的格式是NR PDCP status report的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述status report使用的格式是LTE PDCP status report的格式。
具体地，对于status report，LTE的格式如图5所示。对于status report，NR的格式如图6所示。对于non-split bearer来说，由于只有一个LTE RLC实体，可以保证下层的按序递交，因此不需要status report。对于split bearer来说，由于存在NR RLC实体，不能保证下层的按序递交，因此需要status report。当从LTE PDCP转换到NR PDCP时，使用NR PDCP status report的格式，其中NR PDCP status report包含的计数值(COUNT)。该COUNT可以由LTE PDCP传输的数据包COUNT值得到，或者置零，或者不包含其中的COUNT(这需要另外定义PDU type)。当从NR PDCP转换到LTE PDCP时，使用LTE PDCP status report的格式；其中LTE PDCP status report包含的SN值，其中SN值由NR PDCP传输的数据包SN值得到，或者置零，或者不包含其中的SN值(这需要另外定义PDU type)。其中，COUNT由HFN和PDCP SN 组成。
在一示例中，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述EM使用的格式是LTE PDCP EM的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述EM使用的格式是NR PDCP EM的格式。
其中，LTE PDCP EM包括了LSN域，NR PDCP EM不包括LSN域，或者NR PDCP EM包括COUNT值。
请参见图7，图7为本申请实施例提供的一种重配置方法的流程示意图，包括以下步骤：
步骤S701：网络设备发送重配置指令，所述重配置指令用于指示用户设备对PDCP层进行重配置。
其中，网络设备发送重配置指令可以是网络设备直接向用户设备发送重配置指令，也可以是网络设备通过其他设备向用户设备发送重配置指令，在此不作限定。
其中，重配置指令可包括以下至少一种：密钥、完整性校验信息参数，LTE PDCP和NR PDCP之间转换的相关参数等等。完整性校验是指为保证数据的完整性，用一种指定的算法对数据完整性进行校验的方法。完整性校验信息参数是指校验算法中的变量和设定值。当PDCP层从LTE PDCP变化到NR PDCP时，LTE PDCP和NR PDCP之间转换的相关参数是NR PDCP的相关参数。当PDCP层从NR PDCP变化到LTE PDCP时，LTE PDCP和NR PDCP之间转换的相关参数是LTE PDCP的相关参数。
步骤S702：用户设备接收来自网络设备的重配置指令；所述用户设备对PDCP层进行重配置。
具体地，当所述重配置指令包括NR PDCP的相关参数时，用户设备对PDCP层进行重配置具体有：当用户设备当前的PDCP层是LTE PDCP时，用户设备根据NR PDCP的相关参数将PDCP层从LTE PDCP切换至NR PDCP。或者，当所述重配置指令包括LTE PDCP的相关参数时，用户设备对PDCP层进行重配置具体有：当用户设备当前的PDCP层是NR PDCP时,用户设备根据LTE PDCP的相关参数将PDCP层从NR PDCP切换至LTE PDCP。
步骤S703：所述网络设备发送EM；所述用户设备接收来自所述网络设备的EM。
其中，EM是一个特殊的数据包，EM用于表示发送源侧(本方案中指的是网络设备侧)的数据结束。
可见，在本方案中，在重配置PDCP层时，无需重置所有承载(比如无需重配置RLC层和MAC层，RLC层和MAC层保持现有传输)，只需重配置PDCP层即可，避免了由于PDCP层的变化影响其他承载，进而保证了其他业务的数据连续性。
在一示例中，当所述EM仅在新空口(NR)PDCP协议中定义，且所述用户设备PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述用户设备接收来自所述网络设备的EM之前，所述方法还包括：
所述用户设备进行重置处理，所述重置处理包括重置压缩算法(ROHC)，重置协议数据单元(PDU)序列号(SN)和重置超帧号(HFN)中的至少一种。
在一示例中，当所述EM仅在NR PDCP协议中定义，且所述用户设备PDCP层重配置是NR PDCP变化到LTE PDCP时，或者当所述EM在NR PDCP协议和LTE PDCP协议中均定义时，所述用户设备接收来自所述网络设备的EM之后，所述方法还包括：
所述用户设备进行重置处理，所述重置处理包括重置压缩算法(ROHC)，重置PDU序列号(SN)和重置超帧号(HFN)中的至少一种。
其中，重置压缩算法(ROHC)指的是将压缩算法恢复至初始状态。用户设备将压缩算法恢复至初始状态的具体实施方式可参照现有做法，在此不作说明。
其中，重置PDU序列号指的是将PDU序列号恢复至初始状态。比如，当前用户设备从PDU序列号0发送到PDU序列号10，那么将PDU序列号恢复至初始状态也就是说把用户设备的PDU序列号恢复至PDU序列号0。
其中，重置超帧号指的是将超帧号恢复至初始状态。超帧号是指为了限制通过无线接口发送的序列号比特数的一种计数器溢出机制。这个超帧号就是一个足够大的计数器，用户设备和网络设备之间在发送和无线接口发送的序列号 时，通过超帧号限制无线接口发送的序列号的比特数，将超帧号恢复至初始状态指的是把计数器清零。
在一示例中，所述用户设备进行重置处理之后，所述方法还包括：
所述用户设备向所述网络设备发送状态报告(status report)，所述status report用于所述网络设备确定向所述用户设备发送的PDU；网络设备接收来自用户设备的status report；网络设备根据所述status report发送PDU。
具体地，所述status report用于表示接收端侧(本方案中指的是用户设备侧)已接收到发送端侧(本方案中指的是网络设备侧)发送的EM。网络设备接收到来自用户设备的status report后，网络设备知道网络设备已经接收到EM后，网络设备才给用户设备发送PDU，可使得网络设备发送的PDU与网络设备的模式同步。
在一示例中，所述重配置指令包括密钥和/或完整性校验参数，所述方法还包括：
网络设备根据所述密钥对需要发送的PDU进行加密处理；和/或，所述网络设备根据所述完整性校验参数对接收到的PDU进行完整性校验处理；
网络设备发送处理后的PDU；
所述用户设备接收来自所述网络设备的PDU；
所述用户设备根据所述密钥对接收到的PDU进行解密处理；和/或，所述用户设备根据所述完整性校验参数对接收到的PDU进行完整性校验处理。
具体地，所述用户设备根据所述完整性校验信息参数对需要发送的PDU进行完整性校验处理，具体有：用户设备使用上层提供的密钥计算出完整性校验码，然后根据完整性校验码对接收到的PDCP PDU进行完整性校验码比对，如果完整性校验码相对应，则完成完整性校验成功。
在一示例中，所述EM不包含LSN域，所述EM包含的PDU type不同于LTE协议中定义的EM中包括的PDU type；或者，所述EM包含LSN域，所述EM包括的LSN域均置设定值。
具体地，现有的LTE定义的EM格式如图4所示。其中LSN为发送EM之前的最后一个PDU的序列号。在本方案中，由于LTE侧RLC可以提供按序传输，并且由于PDCP重置导致的SN长度变化导致无法实现无损重配，LSN 变得不需要了。因此本方案中的EM可以不包括LSN域，以节省数据开销，在这种方式下，为了和带LSN域的EM共存，本方案中的EM需要重新定义一个PDU type以区别现有LTE协议中定义的EM中包括的PDU type，比如，现有LTE协议中定义的EM的PDU type为PDU type1，本方案中的EM中包括的PDU type为PDU type2，PDU type1不同于PDU type2。
另一种方式，本方案中的EM可以继续使用LSN域，当时该LSN域全部置为设定值。比如均置为0或均置为1，在这种方式下，由于LSN域全部置为设定值，已经跟现有LTE协议中定义的EM区分开，因此不需要重新一个PDU type来区分现有LTE协议中定义的EM。
在一示例中，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述status report使用的格式是NR PDCP status report的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述status report使用的格式是LTE PDCP status report的格式。
具体地，对于status report，LTE的格式如图5所示。对于status report，NR的格式如图6所示。对于非分叉承载(non-split bearer)来说，由于只有一个LTE RLC实体，可以保证下层的按序递交，因此不需要status report。对于分叉承载(split bearer)来说，由于存在NR RLC实体，不能保证下层的按序递交，因此需要status report。当从LTE PDCP转换到NR PDCP时，使用NR PDCP status report的格式，其中NR PDCP status report包含的计数值(COUNT)。该COUNT可以由LTE PDCP传输的数据包COUNT值得到，或者置零，或者不包含其中的COUNT(这需要另外定义PDU type)。当从NR PDCP转换到LTE PDCP时，使用LTE PDCP status report的格式；其中LTE PDCP status report包含的SN值，其中SN值由NR PDCP传输的数据包SN值得到，或者置零，或者不包含其中的SN值(这需要另外定义PDU type)。其中，COUNT由HFN和PDCP SN组成。
在一示例中，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述EM使用的格式是LTE PDCP EM的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述EM使用的格式是NR PDCP EM的格式。
其中，LTE PDCP EM包括了LSN域，NR PDCP EM不包括LSN域，或 者NR PDCP EM包括COUNT值。
请参见图8，图8是本发明实施例提供的一种用户设备800，包括：一个或多个处理器、一个或多个存储器、一个或多个收发器，以及一个或多个程序；
所述一个或多个程序被存储在所述存储器中，并且被配置由所述一个或多个处理器执行；
所述程序包括用于执行以下步骤的指令：
接收来自网络设备的重配置指令，所述重配置指令用于指示对分组数据汇聚协议(PDCP)层进行重配置；
对PDCP层进行重配置，以及发送结束标志(EM)。
在一示例中，当所述EM仅在NR PDCP协议中定义，且所述用户设备PDCP层重配置是从LTE PDCP变化到NR PDCP时，在发送EM之前，所述程序包括还用于执行以下步骤的指令：
进行重置处理，所述重置处理包括重置压缩算法(ROHC)，重置协议数据单元(PDU)序列号(SN)和重置超帧号(HFN)中的至少一种。
在一示例中，当所述EM仅在NR PDCP协议中定义，且所述用户设备PDCP层重配置是NR PDCP变化到LTE PDCP时，或者当所述EM在NR PDCP协议和LTE PDCP协议中均定义时，在发送EM之后，所述程序包括还用于执行以下步骤的指令：
进行重置处理，所述重置处理包括重置压缩算法(ROHC)，重置PDU序列号(SN)和重置超帧号(HFN)中的至少一种。
在一示例中，在进行重置处理之后，所述程序包括还用于执行以下步骤的指令：
接收来自所述网络设备的状态报告(status report)；
根据所述status report发送PDU。
在一示例中，所述重配置指令包括密钥和/或完整性校验信息参数，所述程序包括还用于执行以下步骤的指令：
根据所述密钥对需要发送的PDU进行加密处理；和/或，所述用户设备根据所述完整性校验信息参数对需要发送的PDU进行完整性校验处理；
发送处理后的PDU。
在一示例中，所述程序包括还用于执行以下步骤的指令：
将LTE PDCP PDU从所述用户设备的PDCP层发送至所述用户设备的LTE侧RLC层。
在一示例中，在发送EM方面，所述程序包括具体用于执行以下步骤的指令：将EM从所述用户设备的PDCP层发送至所述用户设备的LTE侧RLC层。
在一示例中，所述EM不包含LSN域，所述EM包含的PDU类型(type)不同于LTE协议中定义的EM中包括的PDU type；或者，所述EM包含LSN域，所述EM包括的LSN域均置设定值。
在一示例中，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述status report使用的格式是NR PDCP status report的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述status report使用的格式是LTE PDCP status report的格式。
在一示例中，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述EM使用的格式是LTE PDCP EM的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述EM使用的格式是NR PDCP EM的格式。
可见，在本方案中，在重配置PDCP层时，无需重置所有承载(比如无需重配置RLC层和MAC层，RLC层和MAC层保持现有传输)，只需重配置PDCP层即可，避免了由于PDCP层的变化影响其他承载，进而保证了其他业务的数据连续性。
请参见图9，图9是本发明实施例提供的一种网络设备900，包括：一个或多个处理器、一个或多个存储器、一个或多个收发器，以及一个或多个程序；
所述一个或多个程序被存储在所述存储器中，并且被配置由所述一个或多个处理器执行；
所述程序包括用于执行以下步骤的指令：
发送重配置指令，所述重配置指令用于指示用户设备对PDCP层进行重配置；
接收来自所述用户设备的EM。
在一示例中，所述程序包括还用于执行以下步骤的指令：
发送status report，所述status report用于所述用户设备确定向所述网络设备发送的PDU。
在一示例中，所述重配置指令包括密钥和/或完整性校验信息参数，所述程序包括还用于执行以下步骤的指令：
接收来自所述用户设备的PDU；
根据所述密钥对需要发送的PDU进行解密处理；和/或，所述用户设备根据所述完整性校验信息参数对需要发送的PDU进行完整性校验处理。
在一示例中，所述EM不包含LSN域，所述EM包含的PDU类型(type)不同于LTE协议中定义的EM中包括的PDU type；或者，所述EM包含LSN域，所述EM包括的LSN域均置设定值。
在一示例中，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述status report使用的格式是NR PDCP status report的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述status report使用的格式是LTE PDCP status report的格式。
在一示例中，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述EM使用的格式是LTE PDCP EM的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述EM使用的格式是NR PDCP EM的格式。
可见，在本方案中，在重配置PDCP层时，无需重置所有承载(比如无需重配置RLC层和MAC层，RLC层和MAC层保持现有传输)，只需重配置PDCP层即可，避免了由于PDCP层的变化影响其他承载，进而保证了其他业务的数据连续性。
请参见图10，图10是本发明实施例提供的一种用户设备1000，包括：一个或多个处理器、一个或多个存储器、一个或多个收发器，以及一个或多个程序；
所述一个或多个程序被存储在所述存储器中，并且被配置由所述一个或多个处理器执行；
所述程序包括用于执行以下步骤的指令：
接收来自网络设备的重配置指令，所述重配置指令用于指示对PDCP层进行重配置；
对PDCP层进行重配置，以及接收来自所述网络设备的EM。
在一示例中，当所述EM仅在NR PDCP协议中定义，且所述用户设备PDCP层重配置是从LTE PDCP变化到NR PDCP时，在接收来自所述网络设备的EM之前，所述程序包括还用于执行以下步骤的指令：
进行重置处理，所述重置处理包括重置压缩算法(ROHC)，重置协议数据单元(PDU)序列号(SN)和重置超帧号(HFN)中的至少一种。
在一示例中，当所述EM仅在NR PDCP协议中定义，且所述用户设备PDCP层重配置是NR PDCP变化到LTE PDCP时，或者当所述EM在NR PDCP协议和LTE PDCP协议中均定义时，在接收来自所述网络设备的EM之后，所述程序包括还用于执行以下步骤的指令：
进行重置处理，所述重置处理包括重置压缩算法(ROHC)，重置PDU序列号(SN)和重置超帧号(HFN)中的至少一种。
在一示例中，在进行重置处理之后，所述程序包括还用于执行以下步骤的指令：
向所述网络设备发送status report，所述status report用于所述网络设备确定向所述用户设备发送的PDU。
在一示例中，所述重配置指令包括密钥和/或完整性校验参数，所述程序包括还用于执行以下步骤的指令：
接收来自所述网络设备的PDU；
根据所述密钥对接收到的PDU进行解密处理；和/或，所述用户设备根据所述完整性校验参数对接收到的PDU进行完整性校验处理。
在一示例中，所述EM不包含LSN域，所述EM包含的PDU type不同于LTE协议中定义的EM中包括的PDU type；或者，所述EM包含LSN域，所述EM包括的LSN域均置设定值。
在一示例中，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述status report使用的格式是NR PDCP status report的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述status report使用的格式是 LTE PDCP status report的格式。
在一示例中，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述EM使用的格式是LTE PDCP EM的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述EM使用的格式是NR PDCP EM的格式。
可见，在本方案中，在重配置PDCP层时，无需重置所有承载(比如无需重配置RLC层和MAC层，RLC层和MAC层保持现有传输)，只需重配置PDCP层即可，避免了由于PDCP层的变化影响其他承载，进而保证了其他业务的数据连续性。
请参见图11，图11是本发明实施例提供的一种网络设备1100，包括：一个或多个处理器、一个或多个存储器、一个或多个收发器，以及一个或多个程序；
所述一个或多个程序被存储在所述存储器中，并且被配置由所述一个或多个处理器执行；
所述程序包括用于执行以下步骤的指令：
发送重配置指令，所述重配置指令用于指示用户设备对PDCP层进行重配置；
向所述用户设备发送EM。
在一示例中，所述程序包括还用于执行以下步骤的指令：
接收来自用户设备的status report；
根据所述status report向所述用户设备发送PDU。
在一示例中，所述重配置指令包括密钥和/或完整性校验参数，所述程序包括还用于执行以下步骤的指令：
根据所述密钥对接收到的PDU进行解密处理；和/或，所述用户设备根据所述完整性校验参数对接收到的PDU进行完整性校验处理；
向所述用户设备发送处理后的PDU。
在一示例中，所述EM不包含LSN域，所述EM包含的PDU type不同于LTE协议中定义的EM中包括的PDU type；或者，所述EM包含LSN域，所述EM包括的LSN域均置设定值。
在一示例中，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述status report使用的格式是NR PDCP status report的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述status report使用的格式是LTE PDCP status report的格式。
在一示例中，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述EM使用的格式是LTE PDCP EM的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述EM使用的格式是NR PDCP EM的格式。
可见，在本方案中，在重配置PDCP层时，无需重置所有承载(比如无需重配置RLC层和MAC层，RLC层和MAC层保持现有传输)，只需重配置PDCP层即可，避免了由于PDCP层的变化影响其他承载，进而保证了其他业务的数据连续性。
请参阅图12，图12是本实施例提供的一种用户设备1200的结构示意图。该用户设备1200包括处理单元1201、通信单元1202和存储单元1203，其中：
所述处理单元1201，用于通过所述通信单元1202接收来自网络设备的重配置指令，所述重配置指令用于指示对PDCP层进行重配置；对PDCP层进行重配置，以及通过所述通信单元1202发送EM。
其中，处理单元1201可以是处理器或控制器，(例如可以是中央处理器(Central Processing Unit，CPU)，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)，现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等)。通信单元1202可以是收发器、收发电路、射频芯片、通信接口等，存储单元1203可以是存储器。
当处理单元1201为处理器，通信单元1202为通信接口，存储单元1203为存储器时，本发明实施例所涉及的用户设备可以为图8所示的用户设备。
请参阅图13，图13是本实施例提供的一种网络设备1300的结构示意图。该网络设备1300包括处理单元1301、通信单元1302和存储单元1303，其中：
所述处理单元1301，用于通过所述通信单元1302发送重配置指令，所述重配置指令用于指示用户设备对PDCP层进行重配置；通过所述通信单元1302接收来自所述用户设备的EM。
其中，处理单元1301可以是处理器或控制器，(例如可以是中央处理器(Central Processing Unit，CPU)，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)，现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等)。通信单元1302可以是收发器、收发电路、射频芯片、通信接口等，存储单元1303可以是存储器。
当处理单元1301为处理器，通信单元1302为通信接口，存储单元1303为存储器时，本发明实施例所涉及的用户设备可以为图9所示的网络设备。
请参阅图14，图14是本实施例提供的一种用户设备1400的结构示意图。该用户设备1400包括处理单元1401、通信单元1402和存储单元1403，其中：
所述处理单元1401，用于通过所述通信单元1402接收来自网络设备的重配置指令，所述重配置指令用于指示对PDCP层进行重配置；对PDCP层进行重配置，以及通过所述通信单元1402接收来自所述网络设备的EM。
其中，处理单元1401可以是处理器或控制器，(例如可以是中央处理器(Central Processing Unit，CPU)，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)，现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微 处理器的组合等等)。通信单元1402可以是收发器、收发电路、射频芯片、通信接口等，存储单元1403可以是存储器。
当处理单元1401为处理器，通信单元1402为通信接口，存储单元1403为存储器时，本发明实施例所涉及的用户设备可以为图10所示的用户设备。
请参阅图15，图15是本实施例提供的一种网络设备1500的结构示意图。该网络设备1500包括处理单元1501、通信单元1502和存储单元1503，其中：
所述处理单元1501，用于通过所述处理单元1502发送重配置指令，所述重配置指令用于指示用户设备对PDCP层进行重配置；通过所述通信单元1502发送EM。
其中，处理单元1501可以是处理器或控制器，(例如可以是中央处理器(Central Processing Unit，CPU)，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)，现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等)。通信单元1502可以是收发器、收发电路、射频芯片、通信接口等，存储单元1503可以是存储器。
当处理单元1501为处理器，通信单元1502为通信接口，存储单元1503为存储器时，本发明实施例所涉及的用户设备可以为图11所示的网络设备。
本发明实施例还提供了另一种用户设备，如图16所示，为了便于说明，仅示出了与本发明实施例相关的部分，具体技术细节未揭示的，请参照本发明实施例方法部分。该用户设备可以为包括手机、平板电脑、PDA(Personal Digital Assistant，个人数字助理)、POS(Point of Sales，销售终端)、车载电脑等任意用户设备，以用户设备为手机为例：
图16示出的是与本发明实施例提供的用户设备相关的手机的部分结构的框图。参考图16，手机包括：射频(Radio Frequency，RF)电路910、存储 器920、输入单元930、显示单元940、传感器950、音频电路960、无线保真(Wireless Fidelity，WiFi)模块970、处理器980、以及电源990等部件。本领域技术人员可以理解，图16中示出的手机结构并不构成对手机的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
下面结合图16对手机的各个构成部件进行具体的介绍：
RF电路910可用于信息的接收和发送。通常，RF电路910包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器(Low Noise Amplifier，LNA)、双工器等。此外，RF电路910还可以通过无线通信与网络和其他设备通信。上述无线通信可以使用任一通信标准或协议，包括但不限于全球移动通讯系统(Global System of Mobile communication，GSM)、通用分组无线服务(General Packet Radio Service，GPRS)、码分多址(Code Division Multiple Access，CDMA)、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)、长期演进(Long Term Evolution，LTE)、电子邮件、短消息服务(Short Messaging Service，SMS)等。
存储器920可用于存储软件程序以及模块，处理器980通过运行存储在存储器920的软件程序以及模块，从而执行手机的各种功能应用以及数据处理。存储器920可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序等；存储数据区可存储根据手机的使用所创建的数据等。此外，存储器920可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
输入单元930可用于接收输入的数字或字符信息，以及产生与手机的用户设置以及功能控制有关的键信号输入。具体地，输入单元930可包括指纹识别模组931以及其他输入设备932。指纹识别模组931，可采集用户在其上的指纹数据。除了指纹识别模组931，输入单元930还可以包括其他输入设备932。具体地，其他输入设备932可以包括但不限于触控屏、物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆等中的一种或多种。
显示单元940可用于显示由用户输入的信息或提供给用户的信息以及手机的各种菜单。显示单元940可包括显示屏941，可选的，可以采用液晶显示 器(Liquid Crystal Display，LCD)、有机发光二极管(Organic Light-Emitting Diode,OLED)等形式来配置显示屏941。虽然在图16中，指纹识别模组931与显示屏941是作为两个独立的部件来实现手机的输入和输入功能，但是在某些实施例中，可以将指纹识别模组931与显示屏941集成而实现手机的输入和播放功能。
手机还可包括至少一种传感器950，比如光传感器、运动传感器以及其他传感器。具体地，光传感器可包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示屏941的亮度，接近传感器可在手机移动到耳边时，关闭显示屏941和/或背光。作为运动传感器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别手机姿态的应用(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；至于手机还可配置的陀螺仪、气压计、湿度计、温度计、红外线传感器等其他传感器，在此不再赘述。
音频电路960、扬声器961，传声器962可提供用户与手机之间的音频接口。音频电路960可将接收到的音频数据转换后的电信号，传输到扬声器961，由扬声器961转换为声音信号播放；另一方面，传声器962将收集的声音信号转换为电信号，由音频电路960接收后转换为音频数据，再将音频数据播放处理器980处理后，经RF电路910以发送给比如另一手机，或者将音频数据播放至存储器920以便进一步处理。
WiFi属于短距离无线传输技术，手机通过WiFi模块970可以帮助用户收发电子邮件、浏览网页和访问流式媒体等，它为用户提供了无线的宽带互联网访问。虽然图16示出了WiFi模块970，但是可以理解的是，其并不属于手机的必须构成，完全可以根据需要在不改变发明的本质的范围内而省略。
处理器980是手机的控制中心，利用各种接口和线路连接整个手机的各个部分，通过运行或执行存储在存储器920内的软件程序和/或模块，以及调用存储在存储器920内的数据，执行手机的各种功能和处理数据，从而对手机进行整体监控。可选的，处理器980可包括一个或多个处理单元；优选的，处理器980可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操 作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器980中。
手机还包括给各个部件供电的电源990(比如电池)，优选的，电源可以通过电源管理系统与处理器980逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。
尽管未示出，手机还可以包括摄像头、蓝牙模块等，在此不再赘述。
前述图3和图7所示的实施例中，各步骤方法中用户设备侧的流程可以基于该手机的结构实现。
前述图12和图14所示的实施例中，各单元功能可以基于该手机的结构实现。
本发明实施例还提供了一种计算机可读存储介质，其中，所述计算机可读存储介质存储用于电子数据交换的计算机程序，其中，所述计算机程序使得计算机执行如上述方法实施例中用户设备所描述的部分或全部步骤。
本发明实施例还提供了一种计算机可读存储介质，其中，所述计算机可读存储介质存储用于电子数据交换的计算机程序，其中，所述计算机程序使得计算机执行如上述方法实施例中网络设备所描述的部分或全部步骤。
本发明实施例还提供了一种计算机程序产品，其中，所述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，所述计算机程序可操作来使计算机执行如上述方法中用户设备所描述的部分或全部步骤。该计算机程序产品可以为一个软件安装包。
本发明实施例还提供了一种计算机程序产品，其中，所述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质，所述计算机程序可操作来使计算机执行如上述方法实施例中网络设备所描述的部分或全部步骤。该计算机程序产品可以为一个软件安装包。
本发明实施例所描述的方法或者算法的步骤可以以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(Random Access Memory，RAM)、闪存、只读存储器(Read Only Memory，ROM)、可擦除可编程只读存储器(Erasable Programmable ROM，EPROM)、电可擦可编程只读存储 器(Electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于接入网设备、目标网络设备或核心网设备中。当然，处理器和存储介质也可以作为分立组件存在于接入网设备、目标网络设备或核心网设备中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本发明实施例所描述的功能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发明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。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(Digital Subscriber Line，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，数字视频光盘(Digital Video Disc，DVD))、或者半导体介质(例如，固态硬盘(Solid State Disk，SSD))等。
以上所述的具体实施方式，对本发明实施例的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明实施例的具体实施方式而已，并不用于限定本发明实施例的保护范围，凡在本发明实施例的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本发明实施例的保护范围之内。

Claims (24)

  1. 一种重配置方法，其特征在于，包括：
    用户设备接收来自网络设备的重配置指令，所述重配置指令用于指示对分组数据汇聚协议(PDCP)层进行重配置；
    所述用户设备对PDCP层进行重配置，以及发送结束标志(EM)。
  2. 根据权利要求1所述的方法，其特征在于，当所述EM仅在新空口(NR)PDCP协议中定义，且所述用户设备PDCP层重配置是从长期演进技术(LTE)PDCP变化到NR PDCP时，所述用户设备发送EM之前，所述方法还包括：
    所述用户设备进行重置处理，所述重置处理包括重置压缩算法(ROHC)，重置协议数据单元(PDU)序列号(SN)和重置超帧号(HFN)中的至少一种。
  3. 根据权利要求1所述的方法，其特征在于，当所述EM仅在NR PDCP协议中定义，且所述用户设备PDCP层重配置是NR PDCP变化到LTE PDCP时，或者当所述EM在NR PDCP协议和LTE PDCP协议中均定义时，所述用户设备发送EM之后，所述方法还包括：
    所述用户设备进行重置处理，所述重置处理包括重置压缩算法(ROHC)，重置PDU序列号(SN)和重置超帧号(HFN)中的至少一种。
  4. 根据权利要求2或3所述的方法，其特征在于，所述用户设备进行重置处理之后，所述方法还包括：
    所述用户设备接收来自所述网络设备的状态报告(status report)；
    所述用户设备根据所述status report发送PDU。
  5. 根据权利要求1-3任一项所述的方法，其特征在于，所述重配置指令包括密钥和/或完整性校验信息参数，所述方法还包括：
    所述用户设备根据所述密钥对需要发送的PDU进行加密处理；和/或，所述用户设备根据所述完整性校验信息参数对需要发送的PDU进行完整性校验处理；
    所述用户设备发送处理后的PDU。
  6. 根据权利要求1-3任一项所述的方法，其特征在于，所述方法还包括
    所述用户设备将LTE PDCP PDU从所述用户设备的PDCP层发送至所述用户设备的LTE侧RLC层。
  7. 根据权利要求1-3任一项所述的方法，其特征在于，所述用户设备发送EM，包括：
    所述用户设备将EM从所述用户设备的PDCP层发送至所述用户设备的LTE侧RLC层。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，所述EM不包含LSN域，所述EM包含的PDU类型(type)不同于LTE协议中定义的EM中包括的PDU type；或者，所述EM包含LSN域，所述EM包括的LSN域均置设定值。
  9. 根据权利要求4-8任一项所述的方法，其特征在于，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述status report使用的格式是NR PDCP status report的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述status report使用的格式是LTE PDCP status report的格式。
  10. 根据权利要求1-3、5-8任一项所述的方法，其特征在于，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述EM使用的格式是LTE PDCP EM的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述EM使用的格式是NR PDCP EM的格式。
  11. 一种数据传输方法，其特征在于，包括：
    用户设备接收来自网络设备的重配置指令，所述重配置指令用于指示对分组数据汇聚协议(PDCP)层进行重配置；
    所述用户设备对PDCP层进行重配置，以及接收来自所述网络设备的结束标志(EM)。
  12. 根据权利要求11所述的方法，其特征在于，当所述EM仅在新空口(NR)PDCP协议中定义，且所述用户设备PDCP层重配置是从长期演进技术(LTE)PDCP变化到NR PDCP时，所述用户设备接收来自所述网络设备的EM之前，所述方法还包括：
    所述用户设备进行重置处理，所述重置处理包括重置压缩算法(ROHC)，重置协议数据单元(PDU)序列号(SN)和重置超帧号(HFN)中的至少一 种。
  13. 根据权利要求11所述的方法，其特征在于，当所述EM仅在NR PDCP协议中定义，且所述用户设备PDCP层重配置是NR PDCP变化到LTE PDCP时，或者当所述EM在NR PDCP协议和LTE PDCP协议中均定义时，所述用户设备接收来自所述网络设备的EM之后，所述方法还包括：
    所述用户设备进行重置处理，所述重置处理包括重置压缩算法(ROHC)，重置PDU序列号(SN)和重置超帧号(HFN)中的至少一种。
  14. 根据权利要求12或13所述的方法，其特征在于，所述用户设备进行重置处理之后，所述方法还包括：
    所述用户设备向所述网络设备发送状态报告(status report)，所述status report用于所述网络设备确定向所述用户设备发送的PDU。
  15. 根据权利要求11-13任一项所述的方法，其特征在于，所述重配置指令包括密钥和/或完整性校验参数，所述方法还包括：
    所述用户设备接收来自所述网络设备的PDU；
    所述用户设备根据所述密钥对接收到的PDU进行解密处理；和/或，所述用户设备根据所述完整性校验参数对接收到的PDU进行完整性校验处理。
  16. 根据权利要求10-15任一项所述的方法，其特征在于，所述EM不包含LSN域，所述EM包含的PDU type不同于LTE协议中定义的EM中包括的PDU type；或者，所述EM包含LSN域，所述EM包括的LSN域均置设定值。
  17. 根据权利要求14-16任一项所述的方法，其特征在于，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述status report使用的格式是NR PDCP status report的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述status report使用的格式是LTE PDCP status report的格式。
  18. 根据权利要求11-13、15、16任一项所述的方法，其特征在于，当PDCP层重配置是从LTE PDCP变化到NR PDCP时，所述EM使用的格式是LTE PDCP EM的格式；或者，当PDCP层重配置是从NR PDCP变化到LTE PDCP时，所述EM使用的格式是NR PDCP EM的格式。
  19. 一种用户设备，其特征在于，包括处理单元和通信单元，其中：
    所述处理单元，用于通过所述通信单元接收来自网络设备的重配置指令， 所述重配置指令用于指示对分组数据汇聚协议(PDCP)层进行重配置；对PDCP层进行重配置，以及通过所述通信单元发送结束标志(EM)。
  20. 一种用户设备，其特征在于，包括处理单元和通信单元，其中：
    所述处理单元，用于通过所述通信单元接收来自网络设备的重配置指令，所述重配置指令用于指示对分组数据汇聚协议(PDCP)层进行重配置；对PDCP层进行重配置，以及通过所述通信单元接收来自所述网络设备的结束标志(EM)。
  21. 一种用户设备，其特征在于，包括处理器、存储器、通信接口以及一个或多个程序，其中，所述一个或多个程序被存储在所述存储器中，并且被配置由所述处理器执行，所述程序包括用于执行权利要求1-10任一项方法中的步骤的指令。
  22. 一种用户设备，其特征在于，包括处理器、存储器、通信接口以及一个或多个程序，其中，所述一个或多个程序被存储在所述存储器中，并且被配置由所述处理器执行，所述程序包括用于执行权利要求11-18任一项方法中的步骤的指令。
  23. 一种计算机可读存储介质，其特征在于，其存储用于电子数据交换的计算机程序，其中，所述计算机程序使得计算机执行如权利要求1-10任一项所述的方法，所述计算机包括用户设备。
  24. 一种计算机可读存储介质，其特征在于，其存储用于电子数据交换的计算机程序，其中，所述计算机程序使得计算机执行如权利要求11-18任一项所述的方法，所述计算机包括用户设备。
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