WO2018227511A1 - 数据传输方法及相关产品 - Google Patents

数据传输方法及相关产品 Download PDF

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Publication number
WO2018227511A1
WO2018227511A1 PCT/CN2017/088526 CN2017088526W WO2018227511A1 WO 2018227511 A1 WO2018227511 A1 WO 2018227511A1 CN 2017088526 W CN2017088526 W CN 2017088526W WO 2018227511 A1 WO2018227511 A1 WO 2018227511A1
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WO
WIPO (PCT)
Prior art keywords
network device
pdcp
data packet
packet
user equipment
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PCT/CN2017/088526
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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 PCT/CN2017/088526 priority Critical patent/WO2018227511A1/zh
Priority to CN201780052263.9A priority patent/CN109644083B/zh
Publication of WO2018227511A1 publication Critical patent/WO2018227511A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a data transmission method and related products.
  • the Packet Data Convergence Protocol (PDCP) layer receives a PDCP protocol data unit from a Radio Link Control (RLC) layer (Protocol).
  • RLC Radio Link Control
  • Data Unit (PDU) when the header is sent to the upper layer, it is determined according to the window whether the received PDCP PDU should be discarded or placed in the PDCP receiving buffer for further processing (such as sorting processing).
  • the receiving algorithm is usually based on two window operations, one based on "push (PUSH)" window operations and the other based on "PULL” window operations.
  • the so-called window is determined by a window upper bound and window size defined by the PDCP PDU sequence number (SN).
  • PUSH window There are two characteristics for the PUSH window: one is that the movement of the window is moved due to the update of the lower boundary of the window, and the other is that the data packet outside the window is considered to be an outdated data packet and needs to be discarded. There are also two characteristics for a PULL window: one is that the movement of the window is driven by the update of the upper bound of the window, and the other is that the packet outside the window is considered a new package.
  • the PDCP layer will select a unified receiving mode, either a PULL window or a PUSH. window. If the unified receiving mode is the PUSH window mechanism, how to transmit the PDCP data packet can be applied to the RLC non-acknowledgment mode (UM), which is a technical problem to be solved.
  • UM RLC non-acknowledgment mode
  • the embodiments of the present invention provide a data transmission method and related products, which are used to improve the manner of transmitting data packets when the receiving mode is a PUSH window mechanism, so as to be applicable to the RLC UM.
  • an embodiment of the present invention provides a data transmission method, including:
  • the user equipment when the PDCP packet sent by the user equipment has at least one PDCP data When the packet is lost, and the first PDCP data packet is correctly received by the network device, the user equipment sends a second PDCP data packet adjacent to the sequence number of the first PDCP data packet after a period of time, the first PDCP data packet.
  • the sequence number is the upper bound of the PUSH window of the network device
  • the duration is the duration of the reordering timer of the network device.
  • an embodiment of the present invention provides a data transmission method, including:
  • the network device starts a reordering timer,
  • the sequence number of the first PDCP data packet is an upper bound of a PUSH window of the network device;
  • the network device receives a second PDCP data packet that is sent by the user equipment after a time period and is adjacent to a sequence number of the first PDCP data packet, where the duration is a duration of the reordering timer of the network device.
  • 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, under the RLC UM, when the PDCP data packet sent by the user equipment has at least one PDCP data packet loss packet, and the first PDCP data packet is correctly received by the network device, pass through the communication unit for a duration And sending a second PDCP data packet adjacent to the sequence number of the first PDCP data packet, where the sequence number of the first PDCP data packet is an upper boundary of a PUSH window of the network device, where the duration is a weight of the network device The length of the sort timer.
  • 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: when the PDCP data packet sent by the user equipment has at least one PDCP data packet loss, and the first PDCP data packet is correctly received by the network device, start the reordering timer, where the RLC UM is The sequence number of the first PDCP data packet is an upper bound of a PUSH window of the network device;
  • the processing unit is further configured to receive, by the communication unit, a second PDCP data packet that is sent by the user equipment after being used for one time period and adjacent to a sequence number of the first PDCP data packet, where the duration is that of the network device The length of the reordering timer.
  • an embodiment of the present invention provides a user equipment, including one or more processors, and a 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 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 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 steps in the method of the second aspect of the embodiments of the present invention.
  • an embodiment of the present invention provides a computer readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method according to the first aspect of the embodiments of the present invention.
  • an embodiment of the present invention provides a computer readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method according to the second aspect of the embodiments of the present invention.
  • an embodiment of the present invention provides a computer program product, comprising: a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to perform an embodiment of the present invention The method of the first aspect.
  • an embodiment of the present invention provides a computer program product, comprising: a non-transitory computer readable storage medium storing a computer program, the computer program being operative to cause a computer to execute an embodiment of the present invention The method of the second aspect.
  • the first PDCP if it is found that at least one PDCP data packet is lost in the multiple PDCP data packets sent by the user equipment to the network device, and the first PDCP data packet is successfully received by the network device, the first PDCP The sequence number of the data packet is the upper bound of the PUSH window of the network device, and the user equipment sends the second PDCP data packet adjacent to the first PDC P packet sequence number after the duration of the reordering timer of one network device.
  • the PUSH window of the network device needs to be moved after the reordering timer of the network device expires, in order to avoid the PUSH window of the network device If the second PDCP data packet is sent out before the second PDCP data packet is discarded, the user equipment needs to send the second PDCP data packet after the time of the reordering timer of one network device, thereby making When the receiving mode is the PUSH window mechanism, the way of improving the transmission of the data packet can be applied to the RLC UM.
  • FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another network device according to an embodiment of the present disclosure.
  • FIG. 7 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.
  • FIG. 1 is a schematic diagram of a network architecture disclosed in an embodiment of the present application.
  • the network architecture shown in FIG. 1 includes user equipment 110 and network equipment 120.
  • the PDCP layer will select a unified receiving mode, either a PULL window or a PUSH window. If the unified receiving mode is the PUSH window mechanism, how to improve the PDCP PUSH window to adapt to the RLC UM is a problem to be solved.
  • the existing RLC AM processing flow is:
  • Last_Submitted_PDCP_RX_SN ⁇ Last_Submitted_PDCP_RX_SN+Reordering_Window form a receiving window, only the packets falling within this window will be processed, and the packets falling outside the window will be directly discarded.
  • the trigger conditions for moving this window are as follows:
  • the UE shall set the Last_Submitted_PDCP_RX_SN to the PDCP SN value of the last PDCP SDU submitted to the upper layer.
  • Reordering_PDCP_RX_COUNT is set to have an associated COUNT value consisting of RX_HFN and Next_PDCP_RX_SN.
  • the first condition is that the PDCP data packet must be correctly received, and the window can be moved.
  • Condition 2 allows for packet loss, that is, once the reordering timer expires, the packet is ignored and the window moves.
  • the object of the present invention is to improve the PDCP PUSH window to accommodate RLC UM, and RLC UM is to allow packet loss, it is assumed that the behavior of the network device is in accordance with the trigger condition two.
  • the user equipment sends PDCP data packets to the network device continuously, which causes a problem: for example, suppose the user equipment wants to send PDCP data packet 0, PDCP data packet 1, PDCP data packet 2, ..., PDCP packet N-1, PDCP packet N, PDCP packet N+1, PDCP packet N+2, .... Assume that the upper boundary of the PUSH window of the network device is N-1. If the user equipment sends PDCP data packet 0, PDCP data packet 1, PDCP data packet 2, ..., PDCP data packet N-1 to the network device, the PDCP data packet is found. 0 to PDCP packet N-2 are lost, but PDCP packet N-1 is correctly received by the network device.
  • the user equipment Since the user equipment is under the RLC UM, the user equipment immediately transmits the PDCP data packet N after transmitting the PDCP data packet N-1. Since the sequence number N of the PDCP data packet N is not in the PUSH window of the network device, based on the characteristics of the PUSH window, the network device considers that the PDCP data packet N is an outdated data packet, and then discards the PDCP data packet N, thereby causing the PDCP data packet. N was dropped by mistake.
  • the sequence number of the first PDCP data packet is the upper boundary of the PUSH window of the network device, and the user equipment is in the The duration of the reordering timer of the network device is followed by the second PDCP packet adjacent to the first PDC P packet sequence number. It can be seen that the PUSH window of the network device needs to be moved after the reordering timer of the network device expires.
  • the second PDCP packet error is caused.
  • the user equipment needs to send the second PDCP data packet after the reordering timer of one network device, so that when the receiving mode is the PUSH window mechanism, the manner of improving the transmission of the data packet can be applied to the RLC UM. .
  • a User Equipment is a device that provides voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, an in-vehicle device, and the like.
  • Common terminals 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.
  • MIDs mobile internet devices
  • 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 terminal that accesses the terminal.
  • the device to 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); for example, the network device can 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 (AP).
  • WLAN Wireless Local Area Network
  • AC access controller
  • AP WIFI access point
  • FIG. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present application, including the following steps:
  • Step S201 Under the RLC UM, the user equipment sends multiple PDCP data packets to the network device.
  • Step S202 The network device sends one HARQ to the user equipment for each PDCP data packet sent by the user equipment.
  • Step S203 When the network device finds that multiple PDCP data packets sent by the user equipment have at least one PDCP data packet loss, and the first PDCP data packet is correctly received by the network device, the network device starts reordering.
  • the timer, the sequence number of the first PDCP data packet is an upper bound of a PUSH window of the network device.
  • Step S204 When the user equipment determines, according to the HARQ sent by the network device, that the multiple PDCP data packets sent by the user equipment have at least one PDCP data packet loss, and the first PDCP data packet is correctly received by the network device, Receiving, by a user equipment, a second PDCP data packet adjacent to a sequence number of the first PDCP data packet, the duration is a duration of a reordering timer of the network device, and the network device receives the user And a second PDCP data packet that is sent by the device after the duration of the first PDCP data packet.
  • step S203 may be performed before step S202 or after S202, and the present invention is not limited thereto.
  • step S203 is before the above step S204.
  • the plurality of PDCP data packets sent by the user equipment have at least one PDCP data packet loss, the serial number of the discarded PDCP data packet is before the serial number of the first PDCP data packet, and the serial number of the second PDCP data packet is in the first PDCP data packet. After the serial number.
  • the user equipment wants to send PDCP data packet 0, PDCP data packet 1, PDCP data packet 2, ..., PDCP data packet N-1, PDCP data packet N, PDCP data packet N+1, PDCP data packet N+ 2,....
  • the upper bound of the PUSH window of the network device is N-1. If the current user equipment sends PDCP data packet 0, PDCP data packet 1, PDCP data packet 2, ..., PDCP data packet N-1 to the network device, the network device feeds back a HARQ to the user equipment for each data packet sent by the user equipment.
  • the HARQ fed back by the network device for each PDCP data packet is: PDCP data packet 0 corresponds to HARQ0, PDCP data packet 1 corresponds to HARQ1, PDCP data packet 2 corresponds to HARQ2, ..., and PDCP data packet N-1 corresponds to HARQN-1.
  • the HARQ is a feedback of whether the network device correctly receives the PDCP data packet sent by the user equipment. The user equipment can know which PDCP data packets are lost based on the HARQ fed back by the network device and which PDCP data packets are successfully received by the network device.
  • the network device When the network device discovers that the PDCP packet 0 to the PDCP packet N-2 sent by the user equipment are lost. Lost, but when the PDCP packet N-1 is correctly received by the network device, the network device starts the reordering timer.
  • the user equipment When the user equipment detects that the PDCP data packet 0 to the PDCP data packet N-2 are lost based on the HARQ feedback of the network device, but the PDCP data packet N-1 is correctly received by the network device, the user equipment reordering the timing of the network device at this time. After the duration of the device, the PDCP packet N is sent to the network device.
  • the user equipment sends the PDCP data packet N after the reordering timer of the network device, so that the user equipment is in the network device.
  • the PDCP data packet N is sent to the network device, ensuring that the serial number of the PDCP data packet N is within the PUSH window of the network device after the mobile, thereby avoiding the problem that the PDCP data packet N is discarded by the network device error. Therefore, when the receiving mode is the PUSH window mechanism, the manner of improving the transmission of the data packet can be applied to the RLC UM.
  • the network device only supports receiving PDCP data packets using a PUSH window mechanism.
  • a data receiving end (such as a network device in the present invention) generally receives two types of receiving mechanisms, one is a PUSH window mechanism, and the other is a PULL window mechanism, but at 5G/NR.
  • the data receiving end only retains a receiving mechanism, that is, the data receiving end only retains the PUSH window mechanism.
  • the duration of the reordering timer is configured by the network device.
  • the duration of the reordering timer is determined by the network device configuration according to the processing capability or the buffering capability of the network device. For example, the current processing capability of the network device is better. The reordering timer of the network device is shorter, and the current processing capability of the network device is worse. The reordering timer of the network device has a longer duration. For another example, the current cache capability of the network device is better. The reordering timer of the network device is shorter, and the current cache capability of the network device is worse. The reordering timer of the network device has a longer duration.
  • the network device provides the configured duration of the reordering timer to the user equipment by using dedicated signaling or system information.
  • the system information includes Common Resource Configuration (Common Resource Configuration).
  • a new message can be set (or added) in the Common Resource Configuration, which is the duration of the reordering timer. For example, if the new information is 20 ms, the duration of the reordering timer is 20 ms. For example, if the new information is 50 ms, the duration of the reordering timer is 50 ms.
  • the information that the user equipment must know when doing cell access includes system information.
  • the network device provides the duration of the reordering timer to the user equipment through the system information, which can save scheduling signaling, and can also enable the user equipment to obtain the reordering timer duration when the cell accesses.
  • the dedicated signaling includes RRC reconfiguration signaling (RRC Reconfiguration).
  • RRC Reconfiguration RRC reconfiguration signaling
  • a new information may be set (or newly added) in the RRC Reconfiguration, and the new information is the duration of the reordering timer. For example, if the new information is 20 ms, the duration of the reordering timer is 20 ms. For example, if the new information is 50 ms, the duration of the reordering timer is 50 ms.
  • the duration of the reordering timer is determined based on the HARQ feedback time.
  • one packet is transmitted correctly after one HARQ transmission, and the other packet is transmitted after the maximum number of HARQ retransmissions.
  • the time interval of the arrival time of the two packets is the reordering timing.
  • the length of the device For example, when the PDCP data packet 1 is transmitted once, it is correctly received by the network device. The network device correctly receives the PDCP data packet 1 for time 1, and the PDCP data packet 2 transmits the maximum allowed transmission frequency before being correctly received by the network device, and the network device correctly receives the network device.
  • the duration of the reordering timer is determined by the network device configuration based on the current traffic type of the network device.
  • the network device provides the configured duration of the reordering timer to the user equipment by using PDCP configuration information.
  • the PDCP configuration information may carry a t-Reordering cell, which is used to indicate the duration of the reordering timer.
  • the duration of the reordering timer may include 0 ms, an integer multiple of 20 ms, for example, 20 ms, 40 ms, ... , 300ms, for example, it can be 500ms, 750ms, etc.
  • the duration of the reordering timer of the present invention may be time information, or other information that may reflect the duration of the reordering timer, for example, a PDCP packet that can reflect the duration of the reordering timer.
  • the sequence number interval for example, 20 packets can be sent within the duration of the reordering timer, and the duration of the reordering timer can be represented by the sequence number interval 20.
  • FIG. 3 is a user equipment 300 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 sequence number of the first PDCP data packet is sent after a time period.
  • the adjacent second PDCP data packet, the sequence number of the first PDCP data packet is an upper bound of a PUSH window of the network device, and the duration is a duration of a reordering timer of the network device.
  • the network device only supports receiving PDCP data packets using a PUSH window mechanism.
  • the duration of the reordering timer is configured by the network device for the user equipment through dedicated signaling or system information.
  • the duration of the reordering timer is determined based on processing capabilities or caching capabilities of the network device.
  • the duration of the reordering timer is determined based on the HARQ feedback time.
  • the first PDCP if it is found that at least one PDCP data packet is lost in the multiple PDCP data packets sent by the user equipment to the network device, and the first PDCP data packet is successfully received by the network device, the first PDCP The sequence number of the data packet is the upper bound of the PUSH window of the network device, and the user equipment sends the second PDCP data packet adjacent to the first PDC P packet sequence number after the duration of the reordering timer of one network device. It can be seen that the PUSH window of the network device needs to be moved after the reordering timer of the network device expires.
  • the second PDCP packet error is caused. throw away
  • the user equipment needs to send the second PDCP data packet after the duration of the reordering timer of one network device, so that when the receiving mode is the PUSH window mechanism, the manner of improving the transmission of the data packet can be applied to the RLC UM.
  • FIG. 4 is a network device 400 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:
  • a reordering timer is started, where the The sequence number of a PDCP data packet is an upper bound of a PUSH window of the network device;
  • a second PDCP data packet that is sent after a time period and adjacent to a sequence number of the first PDCP data packet, where the duration is a duration of the reordering timer of the network device.
  • the network device only supports receiving PDCP data packets using a PUSH window mechanism.
  • the duration of the reordering timer is configured by the network device for the user equipment through dedicated signaling or system information.
  • the duration of the reordering timer is determined based on processing capabilities or caching capabilities of the network device.
  • the duration of the reordering timer is determined based on the HARQ feedback time.
  • the first PDCP if it is found that at least one PDCP data packet is lost in the multiple PDCP data packets sent by the user equipment to the network device, and the first PDCP data packet is successfully received by the network device, the first PDCP The sequence number of the data packet is the upper bound of the PUSH window of the network device, and the user equipment sends the second PDCP data packet adjacent to the first PDC P packet sequence number after the duration of the reordering timer of one network device. It can be seen that the PUSH window of the network device needs to be moved after the reordering timer of the network device expires.
  • the second PDCP packet error is caused. throw away
  • the user equipment needs to send the second PDCP data packet after the duration of the reordering timer of one network device, so that when the receiving mode is the PUSH window mechanism, the manner of improving the transmission of the data packet can be applied to the RLC UM.
  • FIG. 5 is a schematic structural diagram of a user equipment 500 according to this embodiment.
  • the user equipment 500 includes a processing unit 501, a communication unit 502, and a storage unit 503, where:
  • the processing unit 501 is configured to, under the RLC UM, when the PDCP data packet sent by the user equipment has at least one PDCP data packet loss, and the first PDCP data packet is correctly received by the network device, by the communication unit 502. Sending, after a period of time, a second PDCP data packet adjacent to the sequence number of the first PDCP data packet, where the sequence number of the first PDCP data packet is an upper boundary of a PUSH window of the network device, where the duration is the network device The length of the reordering timer.
  • the processing unit 501 can be a processor or a controller, and can 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 502 can be a transceiver, a transceiver circuit, a radio frequency chip, a communication interface, etc.
  • the storage unit 503 can be a memory.
  • the processing unit 501 is a processor
  • the communication unit 502 is a communication interface
  • the storage unit 503 is a memory
  • the user equipment involved in the embodiment of the present invention may be the user equipment shown in FIG.
  • FIG. 6 is a schematic structural diagram of a network device 600 according to this embodiment.
  • the network device 600 includes a processing unit 601, a communication unit 602, and a storage unit 603, where:
  • the processing unit 601 is configured to start a reordering timer when the PDCP data packet sent by the user equipment has at least one PDCP data packet loss and the first PDCP data packet is correctly received by the network device under the RLC UM.
  • the sequence number of the first PDCP data packet is an upper bound of a PUSH window of the network device;
  • the processing unit 601 is further configured to receive, by the communication unit 602, a second PDCP data packet that is sent by the user equipment after a time period and is adjacent to a sequence number of the first PDCP data packet, where the duration is the network The duration of the device's reordering timer.
  • the processing unit 601 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 602 can be a transceiver, a transceiver circuit, a radio frequency chip, a communication interface, etc.
  • the storage unit 603 can be a memory.
  • the network device 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. 7 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. 7 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, a memory 920, an input unit 930, a display unit 940, a sensor 950, an audio circuit 960, a wireless fidelity (WiFi) module 970, and a processor 980. And power supply 990 and other components.
  • RF radio frequency
  • 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, and a low noise amplifier (Low Noise) Amplifier, LNA), duplexer, etc.
  • 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.
  • the display screen 941 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • the fingerprint recognition module 931 and the display screen 941 function 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 The sensor can adjust the brightness of the display 941 according to the brightness of the ambient light, and the proximity sensor can turn off the display 941 and/or the backlight when the phone moves to the ear.
  • 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. 7 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 an operating system, a user interface, an application, and the like.
  • 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 process on the user equipment side in each step method may be based on the The structure of the mobile phone is realized.
  • 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 (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. Additionally, the ASIC can be located in an access network device, a target network device, or a core network device. Of course, 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 present invention is implemented
  • the functions described in the examples can 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数据传输及相关产品，方法包括：在无线链路层控制协议非应答模式(RLC UM)下，当用户设备发送的分组数据汇聚协议(PDCP)数据包有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备正确接收时，所述用户设备在一个时长后发送与所述第一PDCP数据包的序号相邻的第二PDCP数据包，第一PDCP数据包的序号为所述网络设备的推送(PUSH)窗口的上界，所述时长是所述网络设备的重排序计时器的时长。采用本发明实施例可在接收方式是PUSH窗口机制时，改进传输数据包的方式以能够适用于RLC UM。

Description

数据传输方法及相关产品 技术领域
本发明涉及通信技术领域，具体涉及一种数据传输方法及相关产品。
背景技术
在长期演进技术(Long Term Evolution，LTE)系统中，分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层从无线链路层控制协议(Radio Link Control，RLC)层接收到PDCP协议数据单元(Protocol Data Unit，PDU)，在去完包头往上层递交时，需要根据窗口判断接收到的PDCP PDU是应该丢弃还是放入PDCP接收缓存中，以作进一步的处理(比如排序处理)。接收算法通常基于两种窗口操作，一种是基于“推送(PUSH)”的窗口操作，另外一种是基于“接收(PULL)”的窗口操作。所谓的窗口，是由一个以PDCP PDU序列号(sequence number，SN)定义的窗口上界和窗口大小决定的。
对于PUSH窗口有两个特征：一个是窗口的移动是由于窗口下界更新来移动的，另外一个是在窗口之外的数据包被认为是过时的数据包，需要做丢弃处理。对于PULL窗口也有两个特征：一个是窗口的移动是由于窗口上界的更新来带动，另一个是窗口之外的数据包被认为是新包。
目前，在第五代移动通信技术(5-Generation，5G)或新空口(New Ratio，NR)系统中，已经提出了PDCP层会选定一种统一的接收方式，要么是PULL窗口要么是PUSH窗口。假如统一的接收方式是PUSH窗口机制，如何传输PDCP数据包能够适用于RLC非应答模式(Unknowledged mode，UM)是需要解决的技术问题。
发明内容
本发明实施例提供了一种数据传输方法及相关产品，用于在接收方式是PUSH窗口机制时，改进传输数据包的方式以能够适用于RLC UM。
第一方面，本发明实施例提供一种数据传输方法，包括：
在RLC UM下，当用户设备发送的PDCP数据包有至少一个PDCP数据 包丢包，且第一PDCP数据包被网络设备正确接收时，所述用户设备在一个时长后发送与所述第一PDCP数据包的序号相邻的第二PDCP数据包，第一PDCP数据包的序号为所述网络设备的PUSH窗口的上界，所述时长是所述网络设备的重排序计时器的时长。
第二方面，本发明实施例提供一种数据传输方法，包括：
在RLC UM下，当用户设备发送的PDCP数据包有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备正确接收时，所述网络设备启动重排序(reordering)计时器，所述第一PDCP数据包的序号为所述网络设备的PUSH窗口的上界；
所述网络设备接收所述用户设备在一个时长后发送的与第一PDCP数据包的序号相邻的第二PDCP数据包，所述时长是所述网络设备的重排序计时器的时长。
第三方面，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，用于在RLC UM下，当用户设备发送的PDCP数据包有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备正确接收时，通过所述通信单元在一个时长后发送与所述第一PDCP数据包的序号相邻的第二PDCP数据包，第一PDCP数据包的序号为所述网络设备的PUSH窗口的上界，所述时长是所述网络设备的重排序计时器的时长。
第四方面，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，用于在RLC UM下，当用户设备发送的PDCP数据包有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备正确接收时，启动重排序计时器，所述第一PDCP数据包的序号为所述网络设备的PUSH窗口的上界；
所述处理单元，还用于通过所述通信单元接收所述用户设备在一个时长后发送的与第一PDCP数据包的序号相邻的第二PDCP数据包，所述时长是所述网络设备的重排序计时器的时长。
第五方面，本发明实施例提供一种用户设备，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如本发明实施例第一方面所述的方法中的步骤的指令。
第六方面，本发明实施例提供一种网络设备，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如本发明实施例第二方面所述的方法中的步骤的指令。
第七方面，本发明实施例提供一种计算机可读存储介质，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本发明实施例第一方面所述的方法。
第八方面，本发明实施例提供一种计算机可读存储介质，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本发明实施例第二方面所述的方法。
第九方面，本发明实施例提供一种计算机程序产品，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本发明实施例第一方面所述的方法。
第十方面，本发明实施例提供一种计算机程序产品，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本发明实施例第二方面所述的方法。
在本方案中，在RLC UM下，如果发现用户设备向网络设备发送的多个PDCP数据包中有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备成功接收时，第一PDCP数据包的序号为网络设备的PUSH窗口的上界，用户设备在一个网络设备的重排序计时器的时长后再发送与第一PDC P数据包序号相邻的第二PDCP数据包。可见，由于网络设备的PUSH窗口需在网络设备的reordering计时器超时后才移动，因此为了避免在网络设备的PUSH窗口 未移动之前将第二PDCP数据包发送出去，而导致第二PDCP数据包错误丢弃的情况，用户设备需要在一个网络设备的重排序计时器的时长后再将第二PDCP数据包发出，进而使得在接收方式是PUSH窗口机制时，改进传输数据包的方式能够适用于RLC UM。
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网络构架的示意图；
图2是本发明实施例提供的一种数据传输方法的流程示意图；
图3是本发明实施例提供的一种用户设备的结构示意图；
图4是本发明实施例提供的一种网络设备的结构示意图；
图5是本发明实施例提供的另一种用户设备的结构示意图；
图6是本发明实施例提供的另一种网络设备的结构示意图；
图7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。
请参阅图1，图1是本申请实施例公开的一种网络构架的示意图。图1所示的网络构架包括用户设备110和网络设备120。目前在5G/NR系统中，已经提出了PDCP层会选定一种统一的接收方式，要么是PULL窗口要么是PUSH窗口。假如统一的接收方式是PUSH窗口机制，那么如何改进PDCP PUSH窗口以适应RLC UM是需要解决的问题。
现有RLC AM的处理流程有：
在接收到的PDCP SN–Last_Submitted_PDCP_RX_SN>Reordering_Window或者0<＝Last_Submitted_PDCP_RX_SN–接收到的PDCP SN<Reordering_Window的条件下，如果接收到的PDCP SN>Next_PDCP_RX_SN，那么使用基于RX_HFN-1的COUNT与接收到的PDCP SN值，解密此PDCP PDU。否则，使用基于RX_HFN的与接收到的PDCP SN值，解密此PDCP PDU。最后执行头压缩，并丢弃此PDCP SDU。
Last_Submitted_PDCP_RX_SN～Last_Submitted_PDCP_RX_SN+Reordering_Window组成了一个接收窗口，只有落在这个窗口之内的数据包才会被处理，而落在窗口之外的数据包会被直接丢弃。移动该窗口的触发条件如下：
条件一：如果接收到的PDCP SN＝Last_Submitted_PDCP_RX_SN+1，或者接收到的PDCP SN＝Last_Submitted_PDCP_RX_SN–Maximum_PDCP_SN，那么把相关COUNT值按升序传递给上层。其中相关COUNT值为所有存储的，从接收到的PDCP SDU的COUNT值开始，连续 COUNT值对应的PDCP SDU。最后将Last_Submitted_PDCP_RX_SN置为最后递交给高层的PDCP SDU的PDCP SN值。
条件二：如果由于下层重建导致PDCP没有接收到此PDCP PDU，那么UE应把相关的COUNT值按照升序传递给上层。其中相关的COUNT值为：
(1)所有存储的，相关COUNT值小于接收PDCP SDU的COUNT值的PDCP SDU。
(2)所有存储的，从接收到的PDCP SDU的COUNT值开始，连续COUNT值对应的PDCP SDU。
最后UE应将Last_Submitted_PDCP_RX_SN置为最后递交给高层的PDCP SDU的PDCP SN值。
另外，如果至少有一个已存储的PDCP SDU，那么开始t-Reordering，并设置将Reordering_PDCP_RX_COUNT置为有RX_HFN和Next_PDCP_RX_SN组成的相关COUNT值。
其中，条件一是要求PDCP数据包必须正确接收，窗口才能挪动。条件二允许有丢包的情况出现，即一旦reordering计时器超时，丢包被忽略，窗口挪动。考虑到本发明的目标是如何改进PDCP PUSH窗口以适应RLC UM，而RLC UM是允许丢包的，因此假设网络设备的行为是按照触发条件二进行。
在RLC UM下，用户设备向网络设备发送PDCP数据包是连续发送的，这样就会存在一个问题：比如，假设用户设备要发送PDCP数据包0，PDCP数据包1、PDCP数据包2，…，PDCP数据包N-1，PDCP数据包N，PDCP数据包N+1，PDCP数据包N+2，…。假设网络设备的PUSH窗口的上界为N-1，假如用户设备向网络设备发送PDCP数据包0，PDCP数据包1、PDCP数据包2，…，PDCP数据包N-1后，发现PDCP数据包0到PDCP数据包N-2均丢失了，但是PDCP数据包N-1被网络设备正确接收了。由于用户设备在RLC UM下，因此在发送完PDCP数据包N-1后，用户设备会立即发送PDCP数据包N。由于PDCP数据包N的序号N不在网络设备的PUSH窗口内，基于PUSH窗口的特征，网络设备会认为PDCP数据包N是过时的数据包，进而将PDCP数据包N丢弃，进而导致了PDCP数据包N被错误丢弃。
为了解决上述问题，在RLC UM下，如果发现用户设备向网络设备发送 的多个PDCP数据包中有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备成功接收时，第一PDCP数据包的序号为网络设备的PUSH窗口的上界，用户设备在一个网络设备的重排序计时器的时长后再发送与第一PDC P数据包序号相邻的第二PDCP数据包。可见，由于网络设备的PUSH窗口需在网络设备的reordering计时器超时后才移动，因此为了避免在网络设备的PUSH窗口未移动之前将第二PDCP数据包发送出去，而导致第二PDCP数据包错误丢弃的情况，用户设备需要在一个网络设备的重排序计时器的时长后再将第二PDCP数据包发出，进而使得在接收方式是PUSH窗口机制时，改进传输数据包的方式能够适用于RLC UM。
其中，用户设备(User Equipment，UE)，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。常见的终端例如包括：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设备即是一种将终端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)；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数据传输方法进行详细说明。
请参见图2，图2为本申请实施例提供的一种数据传输方法的流程示意图，包括以下步骤：
步骤S201：在RLC UM下，用户设备向网络设备发送多个PDCP数据包。
步骤S202：网络设备针对所述用户设备发送的每个PDCP数据包向所述用户设备发送一个HARQ。
步骤S203：当所述网络设备发现所述用户设备发送的多个PDCP数据包有至少一个PDCP数据包丢包，且第一PDCP数据包被所述网络设备正确接收时，所述网络设备启动reordering计时器，所述第一PDCP数据包的序号为所述网络设备的PUSH窗口的上界。
步骤S204：当所述用户设备根据所述网络设备发送的HARQ确定用户设备发送的多个PDCP数据包有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备正确接收时，所述用户设备在一个时长后发送与所述第一PDCP数据包的序号相邻的第二PDCP数据包，所述时长是所述网络设备的重排序计时器的时长；所述网络设备接收所述用户设备在所述时长后发送的与第一PDCP数据包的序号相邻的第二PDCP数据包。
需要说明的是，上述步骤S203可在步骤S202之前，也可在S202之后，本发明不作限定。但是上述步骤S203在上述步骤S204之前。用户设备发送的多个PDCP数据包有至少一个PDCP数据包丢包，这些被丢弃的PDCP数据包的序号在第一PDCP数据包的序号之前，第二PDCP数据包的序号在第一PDCP数据包的序号之后。
举例来说，假设用户设备要发送PDCP数据包0，PDCP数据包1、PDCP数据包2，…，PDCP数据包N-1，PDCP数据包N，PDCP数据包N+1，PDCP数据包N+2，…。假设网络设备的PUSH窗口的上界为N-1。假如当前用户设备向网络设备发送了PDCP数据包0，PDCP数据包1、PDCP数据包2，…，PDCP数据包N-1，网络设备针对用户设备发送的每个数据包向用户设备反馈一个HARQ，网络设备针对每个PDCP数据包反馈的HARQ有：PDCP数据包0对应HARQ0，PDCP数据包1对应HARQ1，PDCP数据包2对应HARQ2，…，PDCP数据包N-1对应HARQN-1。HARQ是网络设备就自身是否正确接收到用户设备发送的PDCP数据包的反馈。用户设备可基于网络设备反馈的HARQ知道哪些PDCP数据包丢失哪些PDCP数据包被网络设备成功接收。
当网络设备发现用户设备发送的PDCP数据包0到PDCP数据包N-2均丢 失了，但是PDCP数据包N-1被网络设备正确接收时，此时网络设备启动reordering计时器。
当用户设备基于网络设备反馈的HARQ发现PDCP数据包0到PDCP数据包N-2均丢失了，但是PDCP数据包N-1被网络设备正确接收了，此时用户设备在一个网络设备的reordering计时器的时长后再将PDCP数据包N发送给网络设备。
可见，由于网络设备的PUSH窗口需在网络设备的reordering计时器超时后才移动，用户设备在一个网络设备的reordering计时器的时长后再发送PDCP数据包N，这样可使得用户设备在网络设备的PUSH窗口移动之后再将PDCP数据包N发送给网络设备，保证了PDCP数据包N的序号在移动之后的网络设备的PUSH窗口之内，进而避免了PDCP数据包N被网络设备错误被丢弃的问题，从而使得在接收方式是PUSH窗口机制时，改进传输数据包的方式能够适用于RLC UM。
在一示例中，所述网络设备只支持使用PUSH窗口机制接收PDCP数据包。
具体地，在LTE系统中，数据接收端(如本发明中的网络设备)接收PDCP数据通常有两种接收机制，一种是PUSH窗口机制，另一种是PULL窗口机制，但是在5G/NR系统中，数据接收端只保留了一种接收机制，即数据接收端只保留了PUSH窗口机制。
在一示例中，所述重排序计时器的时长是网络设备配置的。
进一步地，所述重排序计时器的时长是网络设备配置根据所述网络设备的处理能力或缓存能力确定的。比如，网络设备当前的处理能力较好网络设备的重排序计时器的时长较短，网络设备当前的处理能力较差网络设备的重排序计时器的时长较长。又如，网络设备当前的缓存能力较好网络设备的重排序计时器的时长较短，网络设备当前的缓存能力较差网络设备的重排序计时器的时长较长。
进一步地，网络设备将配置好的所述重排序计时器的时长通过专用信令或系统信息提供给所述用户设备。
其中，所述系统信息包括公共资源配置信息(Common Resource Configu ration)。
具体地，可以在Common Resource Configuration中设置(或新增)一个新信息，该新信息为重排序计时器的时长。例如该新信息为20ms，则表示重排序计时器的时长＝20ms，例如该新信息为50ms，则表示重排序计时器的时长＝50ms。
可见，在目前的5G/NR系统中，用户设备在做小区接入时必须知道的信息包括系统信息。网络设备将重排序计时器的时长通过系统信息提供给用户设备，可节省调度信令，也可使得用户设备在小区接入时即可获得重排序计时器的时长。
其中，所述专用信令包括RRC重配置信令(RRC Reconfiguration)。网络设备将重排序计时器的时长通过专用信令提供给用户设备可节省信令的开销。
具体地，可以在RRC Reconfiguration中设置(或新增)一个新信息，该新信息为重排序计时器的时长。例如该新信息为20ms，则表示重排序计时器的时长＝20ms，例如该新信息为50ms，则表示重排序计时器的时长＝50ms。
在一示例中，所述重排序计时器的时长是根据HARQ反馈时间确定的。
具体地，在极端情况下，一个包经过一次HARQ传输就传输正确了，另一个包经过了最大次数的HARQ的重传才传对，这两个包到达时间的时间间隔就是所述重排序计时器的时长。比如，PDCP数据包1传输一次就被网络设备正确接收，网络设备正确接收PDCP数据包1为时间1，PDCP数据包2却传输了允许的最大传输次数才被网络设备正确接收，网络设备正确接收PDCP数据包2为时间2，那么所述重排序计时器的时长等于时间2与时间1的差值。比如，时间2＝100ms，时间1＝10ms，那么所述重排序计时器的时长＝90ms。
在一示例中，所述重排序计时器的时长是网络设备配置根据网络设备当前的业务类型确定的。
进一步地，网络设备将配置好的所述重排序计时器的时长通过PDCP配置信息提供给所述用户设备。PDCP配置信息中可以携带t-Reordering信元，用来指示所述重排序计时器的时长，例如该所述重排序计时器的时长可以包括0ms,20ms的整数倍，例如20ms，40ms，……，300ms，例如，还可以是500ms，750ms等。
需要说明的是，本发明的所述重排序计时器的时长可以是时间信息，也可以是其它可以反应重排序计时器的时长的信息，例如可以反应该重排序计时器的时长的PDCP数据包的序号间隔，例如该重排序计时器的时长内可以发送20个数据包，则可以通过序号间隔20来体现该重排序计时器的时长。
请参见图3，图3是本发明实施例提供的一种用户设备300，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：
在RLC UM下，当用户设备发送的PDCP数据包有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备正确接收时，在一个时长后发送与所述第一PDCP数据包的序号相邻的第二PDCP数据包，第一PDCP数据包的序号为所述网络设备的PUSH窗口的上界，所述时长是所述网络设备的重排序计时器的时长。
在一示例中，所述网络设备只支持使用PUSH窗口机制接收PDCP数据包。
在一示例中，所述重排序计时器的时长是网络设备通过专用信令或系统信息为所述用户设备配置的。
在一示例中，所述重排序计时器的时长是根据所述网络设备的处理能力或缓存能力确定的。
在一示例中，所述重排序计时器的时长是根据HARQ反馈时间确定的。
在本方案中，在RLC UM下，如果发现用户设备向网络设备发送的多个PDCP数据包中有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备成功接收时，第一PDCP数据包的序号为网络设备的PUSH窗口的上界，用户设备在一个网络设备的重排序计时器的时长后再发送与第一PDC P数据包序号相邻的第二PDCP数据包。可见，由于网络设备的PUSH窗口需在网络设备的reordering计时器超时后才移动，因此为了避免在网络设备的PUSH窗口未移动之前将第二PDCP数据包发送出去，而导致第二PDCP数据包错误丢弃 的情况，用户设备需要在一个网络设备的重排序计时器的时长后再将第二PDCP数据包发出，进而使得在接收方式是PUSH窗口机制时，改进传输数据包的方式能够适用于RLC UM。
请参见图4，图4是本发明实施例提供的一种网络设备400，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：
在RLC UM下，当用户设备发送的分组数据汇聚协议(PDCP)数据包有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备正确接收时，启动重排序计时器，所述第一PDCP数据包的序号为所述网络设备的PUSH窗口的上界；
接收所述用户设备在一个时长后发送的与第一PDCP数据包的序号相邻的第二PDCP数据包，所述时长是所述网络设备的重排序计时器的时长。
在一示例中，所述网络设备只支持使用PUSH窗口机制接收PDCP数据包。
在一示例中，所述重排序计时器的时长是网络设备通过专用信令或系统信息为所述用户设备配置的。
在一示例中，所述重排序计时器的时长是根据所述网络设备的处理能力或缓存能力确定的。
在一示例中，所述重排序计时器的时长是根据HARQ反馈时间确定的。
在本方案中，在RLC UM下，如果发现用户设备向网络设备发送的多个PDCP数据包中有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备成功接收时，第一PDCP数据包的序号为网络设备的PUSH窗口的上界，用户设备在一个网络设备的重排序计时器的时长后再发送与第一PDC P数据包序号相邻的第二PDCP数据包。可见，由于网络设备的PUSH窗口需在网络设备的reordering计时器超时后才移动，因此为了避免在网络设备的PUSH窗口未移动之前将第二PDCP数据包发送出去，而导致第二PDCP数据包错误丢弃 的情况，用户设备需要在一个网络设备的重排序计时器的时长后再将第二PDCP数据包发出，进而使得在接收方式是PUSH窗口机制时，改进传输数据包的方式能够适用于RLC UM。
请参阅图5，图5是本实施例提供的一种用户设备500的结构示意图。该用户设备500包括处理单元501、通信单元502和存储单元503，其中：
所述处理单元501，用于在RLC UM下，当用户设备发送的PDCP数据包有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备正确接收时，通过所述通信单元502在一个时长后发送与所述第一PDCP数据包的序号相邻的第二PDCP数据包，第一PDCP数据包的序号为所述网络设备的PUSH窗口的上界，所述时长是所述网络设备的重排序计时器的时长。
其中，处理单元501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502可以是收发器、收发电路、射频芯片、通信接口等，存储单元503可以是存储器。
当处理单元501为处理器，通信单元502为通信接口，存储单元503为存储器时，本发明实施例所涉及的用户设备可以为图3所示的用户设备。
请参阅图6，图6是本实施例提供的一种网络设备600的结构示意图。该网络设备600包括处理单元601、通信单元602和存储单元603，其中：
所述处理单元601，用于在RLC UM下，当用户设备发送的PDCP数据包有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备正确接收时，启动重排序计时器，所述第一PDCP数据包的序号为所述网络设备的PUSH窗口的上界；
所述处理单元601，还用于通过所述通信单元602接收所述用户设备在一个时长后发送的与第一PDCP数据包的序号相邻的第二PDCP数据包，所述时长是所述网络设备的重排序计时器的时长。
其中，处理单元601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602可以是收发器、收发电路、射频芯片、通信接口等，存储单元603可以是存储器。
当处理单元601为处理器，通信单元602为通信接口，存储单元603为存储器时，本发明实施例所涉及的网络设备可以为图4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7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7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7，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7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7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7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7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2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5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 (18)

  1. 一种数据传输方法，其特征在于，包括：
    在无线链路层控制协议非应答模式(RLC UM)下，当用户设备发送的分组数据汇聚协议(PDCP)数据包有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备正确接收时，所述用户设备在一个时长后发送与所述第一PDCP数据包的序号相邻的第二PDCP数据包，第一PDCP数据包的序号为所述网络设备的推送(PUSH)窗口的上界，所述时长是所述网络设备的重排序计时器的时长。
  2. 根据权利要求1所述的方法，其特征在于，所述网络设备只支持使用PUSH窗口机制接收PDCP数据包。
  3. 根据所述1或2所述的方法，其特征在于，所述重排序计时器的时长是网络设备通过专用信令或系统信息为所述用户设备配置的。
  4. 根据权利要求1或2所述的方法，其特征在于，所述重排序计时器的时长是根据所述网络设备的处理能力或缓存能力确定的。
  5. 根据所述1或2所述的方法，其特征在于，所述重排序计时器的时长是根据HARQ反馈时间确定的。
  6. 一种数据传输方法，其特征在于，包括：
    在无线链路层控制协议非应答模式(RLC UM)下，当用户设备发送的分组数据汇聚协议(PDCP)数据包有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备正确接收时，所述网络设备启动重排序计时器，所述第一PDCP数据包的序号为所述网络设备的推送(PUSH)窗口的上界；
    所述网络设备接收所述用户设备在一个时长后发送的与第一PDCP数据包的序号相邻的第二PDCP数据包，所述时长是所述网络设备的重排序计时器的时长。
  7. 根据权利要求6所述的方法，其特征在于，所述网络设备只支持使用PUSH窗口机制接收PDCP数据包。
  8. 根据权利要求6或7所述的方法，其特征在于，所述重排序计时器的时长是网络设备通过专用信令或系统信息为所述用户设备配置的。
  9. 根据权利要求6或7所述的方法，其特征在于，所述重排序计时器的时长是根据所述网络设备的处理能力或缓存能力确定的。
  10. 根据权利要求6或7所述的方法，其特征在于，所述重排序计时器的时长是根据HARQ反馈时间确定的。
  11. 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，用于在无线链路层控制协议非应答模式(RLC UM)下，当用户设备发送的分组数据汇聚协议(PDCP)数据包有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备正确接收时，通过所述通信单元在一个时长后发送与所述第一PDCP数据包的序号相邻的第二PDCP数据包，第一PDCP数据包的序号为所述网络设备的推送(PUSH)窗口的上界，所述时长是所述网络设备的重排序计时器的时长。
  12. 一种网络设备，其特征在于，包括处理单元和通信单元，其中：
    所述处理单元，用于在无线链路层控制协议非应答模式(RLC UM)下，当用户设备发送的分组数据汇聚协议(PDCP)数据包有至少一个PDCP数据包丢包，且第一PDCP数据包被网络设备正确接收时，启动重排序计时器，所述第一PDCP数据包的序号为所述网络设备的推送(PUSH)窗口的上界；
    所述处理单元，还用于通过所述通信单元接收所述用户设备在一个时长后发送的与第一PDCP数据包的序号相邻的第二PDCP数据包，所述时长是所述网络设备的重排序计时器的时长。
  13. 一种用户设备，其特征在于，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如权利要求1-5任一项所述的方法中的步骤的指令。
  14. 一种网络设备，其特征在于，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如权利要求6-10任一项所述的方法中的步骤的指令。
  15. 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1-5任一项所述的方法。
  16. 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6-10任一项所述的方法。
  17. 一种计算机程序产品，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权利要求1-5任一项所述的方法。
  18. 一种计算机程序产品，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权利要求6-10任一项所述的方法。
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