WO2023040586A1 - 定时器处理方法、装置及存储介质 - Google Patents

定时器处理方法、装置及存储介质 Download PDF

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Publication number
WO2023040586A1
WO2023040586A1 PCT/CN2022/113771 CN2022113771W WO2023040586A1 WO 2023040586 A1 WO2023040586 A1 WO 2023040586A1 CN 2022113771 W CN2022113771 W CN 2022113771W WO 2023040586 A1 WO2023040586 A1 WO 2023040586A1
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Prior art keywords
pdcp
timer
sdu
sdus
terminal
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PCT/CN2022/113771
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English (en)
French (fr)
Inventor
谌丽
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大唐移动通信设备有限公司
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Priority to EP22868960.0A priority Critical patent/EP4404618A1/en
Publication of WO2023040586A1 publication Critical patent/WO2023040586A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/28—Timers or timing mechanisms used in protocols
    • 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

Definitions

  • the present disclosure relates to the communication field, and in particular to a timer processing method, device and storage medium.
  • some services have low latency, high throughput and high reliability requirements, such as extended reality (eXtened Reality, XR) and cloud gaming (Cloud Game, CG), which are one of the most important 5G media applications .
  • extended reality eXtened Reality
  • CG Cloud Game
  • This type of service requires the transmission of relatively large data in a short period of time, and its burst throughput may be much higher than the average throughput in a short period of time, and high reliability must be ensured at the same time.
  • XR extended reality
  • CG Cloud Game
  • the user plane air interface protocol stack includes the service data adaptation protocol (Service Data Adaptation Protocol, SDAP) layer, packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, radio link control (Radio Link Control, RLC ) layer, media access control (Media Access Control, MAC) layer and physical layer (Physical Layer, PHY).
  • service data adaptation protocol Service Data Adaptation Protocol
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • Media Access Control Media Access Control
  • Physical Layer Physical Layer, PHY
  • one data packet corresponds to one data frame, and each IP packet among the multiple IP packets divided into one data frame is transmitted independently on the air interface, that is, one IP packet is mapped to After the air interface corresponds to a PDCP Service Data Unit (Service Data Unit, SDU).
  • SDU Service Data Unit
  • the network device configures a PDCP discard timer (discardTimer) for the upstream PDCP entity.
  • a PDCP discard timer (discardTimer) for the upstream PDCP entity.
  • the PDCP discard timer is started for the PDCP SDU. If the PDCP discard timer expires and the PDCP SDU is not delivered to the next protocol layer (ie, the RLC layer), the PDCP SDU is discarded.
  • the present disclosure provides a timer processing method, device and storage medium, which are used to solve the problem that during the transmission of multiple IP packets in a data frame, when the PDCP discard timer of some PDCP SDUs has expired, the remaining PDCP SDUs are still transmission, leading to the problem of low air interface resource efficiency.
  • the present disclosure provides a timer processing method applied to a terminal, including:
  • multiple PDCP SDUs in the PDCP SDU group are used to transmit multiple IP packets of the same data frame.
  • the time points at which the PDCP discard timers of different PDCP SDUs in the PDCP SDU group expire are the same, or the time interval at which the PDCP discard timers of different PDCP SDUs expire is less than or equal to the error threshold of the PDCP discard timer.
  • determining the PDCP SDU group includes at least one of the following:
  • the service to which the data frame belongs is a periodic service and there is only one data frame in one service period, it is determined that the PDCP SDU group includes all PDCP SDUs in the same service period;
  • the PDCP SDU group includes multiple PDCP SDUs for transmitting IP packets carrying the same data frame label
  • the PDCP SDU group includes PDCP SDUs used to transmit multiple IP packets of the same data frame;
  • the PDCP SDU carries a group identifier
  • At least two PDCP SDUs in the PDCP SDU group arrive at the PDCP layer at different time points, and the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group, including any of the following kind:
  • the starting point of the PDCP discard timer for all PDCP SDUs is the time point when the first PDCP SDU arrives at the PDCP layer.
  • All PDCP SDUs The time point when the PDCP discard timer of the SDU expires is the time point when the PDCP discard timer of the first PDCP SDU expires; or
  • the length of the PDCP discarding timer configured by the network equipment is adjusted to obtain the length of the PDCP discarding timer of each PDCP SDU, wherein the time starting point of the PDCP discarding timer of each PDCP SDU is the time point when each PDCP SDU arrives at the PDCP layer; or
  • one of the multiple PDCP discard timers is used sequentially according to the order in which each PDCP SDU arrives at the PDCP layer. .
  • the present disclosure provides a timer processing method applied to a network device, including:
  • the present disclosure provides a timer processing device, which is applied to a terminal, and the timer processing device includes a memory, a transceiver, and a processor;
  • transceiver configured to send and receive data under the control of the processor
  • a processor that reads a computer program in memory and does the following:
  • multiple PDCP SDUs in the PDCP SDU group are used to transmit multiple IP packets of the same data frame.
  • the time points at which the PDCP discard timers of different PDCP SDUs in the PDCP SDU group expire are the same, or the time interval at which the PDCP discard timers of different PDCP SDUs expire is less than or equal to the error threshold of the PDCP discard timer.
  • the processor also performs at least one of the following operations:
  • the service to which the data frame belongs is a periodic service and there is only one data frame in one service period, it is determined that the PDCP SDU group includes all PDCP SDUs in the same service period;
  • the PDCP SDU group includes multiple PDCP SDUs for transmitting IP packets carrying the same data frame label
  • the PDCP SDU group includes PDCP SDUs used to transmit multiple IP packets of the same data frame;
  • the PDCP SDU carries a group identifier
  • At least two PDCP SDUs in the PDCP SDU group arrive at the PDCP layer at different time points, and the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group, including any of the following kind:
  • the starting point of the PDCP discard timer for all PDCP SDUs is the time point when the first PDCP SDU arrives at the PDCP layer.
  • All PDCP SDUs The time point when the PDCP discard timer of the SDU expires is the time point when the PDCP discard timer of the first PDCP SDU expires; or
  • the length of the PDCP discarding timer configured by the network equipment is adjusted to obtain the length of the PDCP discarding timer of each PDCP SDU, wherein the time starting point of the PDCP discarding timer of each PDCP SDU is the time point when each PDCP SDU arrives at the PDCP layer; or
  • one of the multiple PDCP discard timers is used sequentially according to the order in which each PDCP SDU arrives at the PDCP layer. .
  • the present disclosure provides a timer processing device, which is applied to network equipment, and the timer processing device includes a memory, a transceiver, and a processor;
  • transceiver configured to send and receive data under the control of the processor
  • the present disclosure provides a timer processing device, which is applied to a terminal, and the timer processing device includes:
  • the processing unit is used to determine the packet data convergence protocol PDCP service data unit SDU group, wherein the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group.
  • multiple PDCP SDUs in the PDCP SDU group are used to transmit multiple IP packets of the same data frame.
  • the time points at which the PDCP discard timers of different PDCP SDUs in the PDCP SDU group expire are the same, or the time interval at which the PDCP discard timers of different PDCP SDUs expire is less than or equal to the error threshold of the PDCP discard timer.
  • processing unit is also configured to perform at least one of the following operations:
  • the service to which the data frame belongs is a periodic service and there is only one data frame in one service period, it is determined that the PDCP SDU group includes all PDCP SDUs in the same service period;
  • the PDCP SDU group includes multiple PDCP SDUs for transmitting IP packets carrying the same data frame label
  • the PDCP SDU group includes PDCP SDUs used to transmit multiple IP packets of the same data frame;
  • the PDCP SDU carries a group identifier
  • At least two PDCP SDUs in the PDCP SDU group arrive at the PDCP layer at different time points, and the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group, including any of the following kind:
  • the starting point of the PDCP discard timer for all PDCP SDUs is the time point when the first PDCP SDU arrives at the PDCP layer.
  • All PDCP SDUs The time point when the PDCP discard timer of the SDU expires is the time point when the PDCP discard timer of the first PDCP SDU expires; or
  • the length of the PDCP discarding timer configured by the network equipment is adjusted to obtain the length of the PDCP discarding timer of each PDCP SDU, wherein the time starting point of the PDCP discarding timer of each PDCP SDU is the time point when each PDCP SDU arrives at the PDCP layer; or
  • one of the multiple PDCP discard timers is used sequentially according to the order in which each PDCP SDU arrives at the PDCP layer. .
  • the present disclosure provides a timer processing device, which is applied to network equipment, and the timer processing device includes:
  • a configuration unit configured to configure one or more PDCP discard timers corresponding to the PDCP entity for the terminal, and/or configure the PDCP discard timer error threshold corresponding to the PDCP entity for the terminal, wherein the PDCP discard timer error threshold is used to constrain PDCP The time interval at which the PDCP discard timers of different PDCP SDUs in the entity's PDCP SDU group expire.
  • the present disclosure provides a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is used to enable a processor to execute the timer processing method described in the first aspect or the second aspect.
  • the present disclosure provides a computer program product containing instructions.
  • the instructions When the instructions are run on a computer, the computer is made to execute the timer processing method as described in the first aspect or the second aspect.
  • the present disclosure provides a communication system, including any of the above-mentioned network devices and at least one of the above-mentioned any of the terminals.
  • the present disclosure provides a timer processing method, device and storage medium.
  • a terminal determines a PDCP SDU group at the PDCP layer, wherein the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group.
  • this method fully considers that different PDCP SDUs may arrive at the PDCP layer at different times during the transmission of multiple IP packets of a data frame.
  • the method of maintaining different PDCP discard timer lengths for multiple PDCP SDUs in a data frame is beneficial for terminals to adopt appropriate PDCP discard timer lengths for PDCP SDUs according to the time when PDCP SDUs arrive at the PDCP layer, and solve the problem of PDCP where an IP packet in a data frame resides.
  • the PDCP discard timer of the SDU has expired and other IP packets in the data frame are still being transmitted.
  • Figure 1(a) is an example diagram of modeling XR services with frame-level data packets
  • Figure 1(b) is an example diagram of an XR service data packet mapped to multiple IP packets at the air interface of the 5G system;
  • Figure 1(c) is an example diagram of a user plane protocol stack
  • FIG. 2 is a schematic diagram of an application scenario provided by an embodiment of the present disclosure
  • FIG. 3 is a flowchart of a timer processing method provided by an embodiment of the present disclosure
  • Fig. 4 is a transmission example diagram of a plurality of IP packets in a data frame
  • FIG. 5 is a schematic structural diagram of a timer processing device provided by an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a timer processing device provided by another embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a timer processing device provided by another embodiment of the present disclosure.
  • Fig. 8 is a schematic structural diagram of a timer processing device provided by another embodiment of the present disclosure.
  • At least one means one or more, and “plurality” means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the contextual objects are an “or” relationship.
  • “At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items.
  • At least one item (piece) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple .
  • each step or operation in the embodiment of the present disclosure is only an example, and the embodiment of the present disclosure may also perform other operations or variations of various operations.
  • each step may be performed in a different order presented in the embodiments of the present disclosure, and it may not be necessary to perform all operations in the embodiments of the present disclosure.
  • the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet Wireless business (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, Long term evolution advanced (LTE-A) system, universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G new air interface (New Radio, NR) system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet Wireless business
  • long term evolution long term evolution
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • FDD frequency division duplex
  • TDD time division duplex
  • LTE-A Long term evolution advanced
  • the terminal involved in the embodiments of the present disclosure may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem.
  • the name of the terminal may be different.
  • the terminal may be called a user equipment (User Equipment, UE).
  • UE User Equipment
  • the wireless terminal can communicate with one or more core networks (Core Network, CN) via the radio access network (Radio Access Network, RAN), and the wireless terminal can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) And computers with mobile terminals, such as portable, pocket, hand-held, built-in computer or vehicle-mounted mobile devices, which exchange speech and/or data with the radio access network.
  • CN Core Network
  • RAN Radio Access Network
  • RAN Radio Access Network
  • a wireless terminal may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, A remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), and a user device (user device) are not limited in the embodiments of the present disclosure.
  • the network device involved in the embodiments of the present disclosure may be a base station, and the base station may include multiple cells that provide services for terminals.
  • the base station can also be called an access point, or it can be a device in the access network that communicates with wireless terminals through one or more sectors on the air interface, or by other names.
  • Network equipment may be used to interchange received over-the-air frames with Internet Protocol (IP) packets and act as a router between the wireless terminal and the rest of the access network, which may include Internet Protocol (IP) packets. (IP) communication network.
  • IP Internet Protocol
  • Network devices may also coordinate attribute management for the air interface.
  • the network device involved in the embodiment of the present disclosure may be a network device (Base Transceiver Station, BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA) ), it can also be a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be an evolved network device in a long-term evolution (long term evolution, LTE) system (evolutional Node B, eNB or e-NodeB), 5G base station (gNB) in the 5G network architecture (next generation system), can also be a home evolved base station (Home evolved Node B, HeNB), relay node (relay node) , a home base station (femto), a pico base station (pico), etc., are not limited in this embodiment of the present disclosure.
  • a network device may include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node,
  • MIMO transmission can be Single User MIMO (Single User MIMO, SU-MIMO) or Multi-User MIMO ( Multiple User MIMO, MU-MIMO).
  • MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or diversity transmission, precoding transmission, or beamforming transmission, etc.
  • the XR service is modeled by frame-level data packets (that is, based on data frame modeling) in the 5G system, and each data packet (Packet, also called a packet) corresponds to a data frame (also called Called XR video frame), each data frame can be divided into multiple IP packets.
  • Packet also called a packet
  • each data frame can be divided into multiple IP packets.
  • XR is a general term for different types of reality, referring to all real and virtual environments and human-computer interactions generated by computer technology and equipment, including augmented display (Augmented Reality, AR), mixed reality (Mixed Reality, MR) and virtual reality (Virtual Reality, VR) and other representative forms.
  • Figure 1(a) is an example diagram of XR service modeled with frame-level data packets
  • Figure 1(b) is an XR service data packet mapped to the 5G system air interface Example diagram of multiple IP packets.
  • XR services include data packets following a certain probability distribution. Taking data packet K and data packet K+1 as examples, data packet K represents a data frame K containing multiple IP packets, and data packet K+1 represents a data frame K+1 including multiple IP packets, and the average period of the data frame is 1 frame per second (frame per second, fps).
  • XR service data packets are mapped to multiple IP packets on the radio access network (Radio Access Network, RAN) side, for example, the first XR data packet is mapped to the first three IP packets on the RAN side.
  • the service characteristic requirements are for data frames.
  • the service characteristic requirements for data frames are cycle 60fps, data transmission rate 10 Mbits per second (Million bits per second, Mbps), packet delay budget (Packet Delay Budget) 30 milliseconds (ms). Therefore, the transmission speed, reliability, and delay of data frames are very critical for this type of business.
  • the air interface transmission is carried out based on the IP packet as the basic unit, that is, each IP packet of a data frame is transmitted independently on the air interface. Specifically, an IP is mapped to the air interface, and corresponds to a PDCP at the PDCP layer.
  • Service Data Unit Service Data Unit, SDU.
  • Fig. 1(c) shows an example diagram of the user plane protocol stack.
  • the user plane air interface protocol stack includes multiple user plane air interface protocol layers: Service Data Adaptation Protocol (Service Data Adaptation Protocol, SDAP) layer, packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, radio link control (Radio Link Control, RLC) layer, media access control (Media Access Control, MAC) layer and physical layer (Physical Layer, PHY).
  • SDAP Service Data Adaptation Protocol
  • PDCP packet data convergence protocol
  • RLC Radio Link Control
  • Media Access Control Media Access Control
  • Physical Layer Physical Layer, PHY
  • the network device configures a PDCP discard timer for the PDCP entity based on the Packet Delay Budget (PDB) of the Data Radio Bearer (DRB) corresponding to the PDCP entity, and each PDCP SDU reaches the PDCP layer , start the PDCP discard timer for the PDCP SDU. If the PDCP discard timer expires and the PDCP SDU is not passed to the next protocol layer, the PDCP SDU is discarded.
  • PDB Packet Delay Budget
  • DRB Data Radio Bearer
  • the method includes: determining a PDCP SDU group, wherein the terminal maintains different PDCP discard timers for PDCP SDUs Length, thus, in view of the different arrival time of the IP packet in the data frame at the PDCP layer, the terminal can maintain different PDCP discard timer lengths for the PDCP SDU containing the IP packet based on the difference in the arrival time of the IP packet, and can set different PDCP SDU timer lengths for different PDCP SDUs.
  • the method and the device are conceived based on the same application. Since the principle of solving problems of the method and the device is similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.
  • data frames in the embodiments of the present disclosure are not limited to the data frames in the XR service, and may also be data frames in other services modeled by frame-level data packets.
  • FIG. 2 is a schematic diagram of an application scenario provided by an embodiment of the present disclosure.
  • this embodiment provides a communication system, which includes a network device 210 and a terminal 220 , where three terminals 320 are used as an example in this embodiment.
  • the terminal 220 sends a data frame of a service (such as an XR service) to the network device 210.
  • a service such as an XR service
  • the terminal 220 sequentially processes multiple IP packets of the data frame at multiple user plane air interface protocol layers, The data frame is sent to the network device 210, and the transmission of the data frame is realized between the terminal 220 and the network device 210.
  • FIG. 3 is a schematic flowchart of a timer processing method provided by an embodiment of the present disclosure. As shown in Figure 3, the method of this embodiment may include:
  • the network device pre-configures one or more PDCP discard timers corresponding to the PDCP entity for the terminal, and/or configures an error threshold of the PDCP discard timer corresponding to the PDCP entity for the terminal.
  • the network device may configure the PDCP discard timer and/or the PDCP discard timer error threshold corresponding to the PDCP entity to the terminal by sending a configuration message to the terminal in advance.
  • the configuration method includes at least one of the following: the network device configures a PDCP discard timer corresponding to the PDCP entity to the terminal, the network device configures multiple PDCP discard timers corresponding to the PDCP entity to the terminal, and the network device configures a PDCP entity corresponding to the terminal.
  • PDCP drop timer error threshold is the configuration method.
  • the network device configures to the terminal the PDCP discard timer error threshold corresponding to the PDCP entity, which can be configured with the network device to the terminal with one PDCP discard timer corresponding to the PDCP entity, and the network device configures the terminal with multiple PDCP discard timers corresponding to the PDCP entity The combination of these two configurations,
  • the PDCP discard timer error threshold is used to constrain the time interval of the PDCP discard timer timeout of multiple PDCP SDUs in the PDCP entity, in particular, it is used to constrain the timeout of the PDCP discard timers of different PDCP SDUs in the subsequent PDCP SDU group Time interval, so that multiple PDCP SDUs in the PDCP SDU group have similar transmission characteristics.
  • the terminal determines the PDCP SDU group, wherein the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group.
  • the terminal processes the multiple IP packets layer by layer in multiple user plane air interface protocol layers of the user plane protocol stack, wherein, After the IP packet reaches the SDAP layer, it forms an SDAP PDU, and after the SDAP PDU is passed to the PDCP layer, it becomes a PDCP SDU.
  • the terminal can determine the PDCP SDU group among the multiple PDCP SDUs arriving at the PDCP layer, where the PDCP SDU group includes multiple PDCP SDUs. Among them, after determining the PDCP SDU group, the terminal can use the PDCP SDU group to transmit data based on maintaining different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group.
  • the terminal can maintain different PDCP discard timers for multiple PDCP SDUs in the PDCP SDU group on the basis of the PDCP discard timers pre-configured by the network device for the PDCP entity to which the PDCP SDU group belongs length. Especially when the arrival times of multiple PDCP SDUs in the PDCP SDU group are different, the terminal can maintain a longer PDCP discard timer length for the PDCP SDUs that arrive at the PDCP layer earlier, and maintain a longer PDCP discard timer for the PDCP SDUs that arrive at the PDCP layer later.
  • the PDCP SDU maintains a short PDCP discard timer length, so that the time points at which the PDCP discard timers of multiple PDCP SDUs in the PDCP SDU group expire are as close as possible, that is, the IP packets transmitted by multiple PDCP SDUs in the PDCP SDU group have similar transmission characteristics.
  • the terminal when the network device configures the PDCP discard timer error threshold corresponding to the PDCP entity for the terminal, the terminal can maintain the time interval for the PDCP discard timer of multiple PDCP SDUs in the PDCP SDU group to expire Less than or equal to the error threshold of the PDCP drop timer.
  • the setting of the error threshold of the PDCP discard timer is an error space reserved in consideration of a certain error tolerance in the timing process of the PDCP discard timer.
  • the terminal can maintain different PDCP discard timer lengths based on the multiple PDCP SDUs in the PDCP SDU group: on the one hand, after the PDCP discard timer of a PDCP SDU expires, the invalid PDCP SDUs save air interface resources and improve air interface resource efficiency; on the other hand, the corresponding PDCP SDUs can be transmitted in time before the PDCP discard timer of PDCP SDUs in the PDCP SDU group is about to expire, so as to realize transmission delay guarantee and realize multiple Efficient transmission of PDCP SDUs.
  • the network device pre-configures one or more PDCP timeout timers and/or PDCP discard timer error thresholds corresponding to the PDCP entity for the terminal, considering that the time when the PDCP SDUs in the PDCP SDU group arrive at the PDCP layer may be different.
  • the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group, so that multiple PDCP SDUs in the PDCP SDU group have similar transmission effects, and realize PDCP while ensuring PDB
  • the effective transmission of multiple PDCP SDUs in the SDU group realizes the effective transmission of multiple IP packets in the data frame and improves the resource efficiency of the air interface.
  • the multiple PDCP SDUs in the PDCP SDU group are used to transmit multiple IP packets of the same data frame, in other words, the multiple PDCP SDUs in the PDCP SDU group contain multiple IP packets of the same data frame.
  • the terminal maintains different PDCP discard timer lengths for the PDCP SDUs corresponding to multiple IP packets of the same data frame, so that the same data Multiple IP packets of a frame have similar transmission effects when they are transmitted at the PDCP layer.
  • the PDCP discard timer of the PDCP SDU used to transmit the IP packets of the same data frame is close to the time when the PDCP discard timer expires.
  • the problem that the remaining IP packets are still being transmitted after the PDCP discard timer of the PDCP SDU where an IP packet is located expires.
  • the time points at which the PDCP discard timers of different PDCP SDUs in the PDCP SDU group expire are the same, or, the time interval at which the PDCP discard timers of different PDCP SDUs in the PDCP SDU group expire is less than or equal to the PDCP discard timer error threshold.
  • the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group, so that the PDCP discard timers of different PDCP SDUs in the PDCP SDU group expire at the same time point, or so that the PDCP SDU
  • the time interval between the time points when the PDCP discard timers of different PDCP SDUs in the group expire is less than or equal to the error threshold of the PDCP discard timer.
  • IP packet is transmitted to the lower layer in time before the time point.
  • possible implementations of S301 include at least one of the following:
  • the terminal can determine the PDCP SDU group Includes all PDCP SDUs within the same service cycle. Therefore, when the data frame belongs to the service data of the periodic service, the PDCP SDU group can be determined based on the service period, and the accuracy of determining the PDCP SDU group can be improved. Among them, the terminal can know whether the data frame belongs to periodic service data from the application layer, and there is no limitation here
  • the PDCP SDU group includes multiple PDCP SDUs for transmitting IP packets carrying the same data frame label.
  • multiple IPs of the same data frame carry the same data frame label
  • IP packets of different data frames carry different data frame labels, in other words, the data frame label corresponding to the data frame is unique. Therefore, in the case that the IP packet carries a data frame label, the accuracy of the PDCP SDU group is improved based on the data frame label.
  • the terminal can add the same data frame label to multiple IP packets of the same data frame at the application layer, and add different data frames to IP packets of different data frames.
  • the specific process of adding data frame labels to IP packets No restrictions.
  • the PDCP SDU group includes PDCP SDUs used to transmit multiple IP packets of the same data frame.
  • deep packet analysis refers to the acquisition of frame characteristics through IP packet analysis, using the frame effects obtained by analysis to determine multiple IP packets belonging to the same data frame, and then determine the PDCP SDU group.
  • the PDCP layer perform in-depth packet analysis on the IP packets contained in multiple PDCP SDUs to obtain the inner layer information of the IP packets (the inner layer information of the IP packets can reflect the frame characteristics), and determine the IP address based on the inner layer information of the IP packets.
  • the data frame to which the packet belongs according to the data frames to which multiple IP packets belong, determines the multiple IP packets belonging to the same data frame, and then determines the multiple PDCP SDUs used to transmit the IP packets of the same data frame, by the multiple PDCP SDUs , to get the PDCP SDU group. Therefore, based on the way of deep packet analysis, the accuracy of determining the PDCP SDU group is improved.
  • the PDCP SDU carries a group identifier
  • the group identifier in the PDCP SDU comes from the SDAP PDU.
  • a plurality of PDCP SDUs of the IP packet transmitting the same data frame belong to the same PDCP SDU group
  • the group identifier is used to identify the PDCP SDU group, which can be used to identify the data frame accordingly, in order to identify a data frame in this embodiment
  • the identification introduced by classifying multiple IP packets included, and the IP packets contained in PDCP SDUs carrying the same group identification belong to the same data frame.
  • the terminal can determine multiple IP packets belonging to the same data frame at the SDAP layer according to the data frame label of the IP packet or perform in-depth packet analysis on the IP packet, and for multiple IP packets belonging to the same data frame, when used for transmission
  • the SDAP PDU of these IP packets carries the same group identifier, and then sends the SDAP PDU to the PDCP layer.
  • the terminal determines multiple PDCP SDUs carrying the same group ID based on the group ID carried in the PDCP SDU, and obtains the PDCP SDU group based on the multiple PDCP SDUs carrying the same group ID.
  • the accuracy of the PDCP SDU group is improved.
  • At least two PDCP SDUs in the PDCP SDU group arrive at the PDCP layer at different time points.
  • the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group. Solve the problem that among the PDCP SDUs arriving at the PDCP layer at different times, one PDCP SDU times out and other PDCP SDUs are still being transmitted.
  • the length of the PDCP discard timer is the actual timing duration of the PDCP discard timer.
  • the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group, including at least one of the following methods:
  • Method 1 A PDCP discard timer corresponding to the PDCP entity is pre-configured by the network device for the terminal.
  • the time starting point of the PDCP discard timer of all PDCP SDUs is the time point when the first PDCP SDU arrives at the PDCP layer
  • the time point when the PDCP discard timer of all PDCP SDUs expires is the time point when the PDCP discard timer of the first PDCP SDU expires.
  • the first PDCP SDU refers to the first PDCP SDU in the PDCP SDU group that reaches the PDCP layer.
  • the time starting points of the PDCP discard timers of the remaining PDCP SDUs are all unified as the time when the first PDCP SDU arrives at the PDCP layer Time point, so that the time starting points of the PDCP discard timers of each PDCP SDU in the PDCP SDU group are consistent, and then combined with the network device to configure a PDCP discard timer corresponding to the PDCP entity for the terminal, the PDCP discard timer of each PDCP SDU in the PDCP SDU group
  • the timing of the timeout is also the same.
  • the PDCP discard timer corresponding to the PDCP SDU that arrives at the PDCP layer earlier starts counting first, and the PDCP SDU that arrives at the PDCP layer later
  • the corresponding PDCP discard timer starts counting, so the actual timing duration of the PDCP discard timer corresponding to the PDCP SDU with different arrival time at the PDCP layer is different.
  • the PDCP discard timer of each PDCP SDU in the PDCP SDU group expires at the same time point, which avoids the situation that the PDCP discard timer of one PDCP SDU in the PDCP SDU group expires while other PDCP SDUs are still being transmitted.
  • the terminal completes the transmission of the PDCP SDU before the uniform timeout time of each PDCP discard timer, which is conducive to the effective transmission of the PDCP SDU, ensures the PDB and improves the resource efficiency of the air interface.
  • FIG. 4 is an example diagram of transmission of multiple IP packets in one data frame.
  • a data frame is divided into three IP packets, and these three IP packets are mapped to the first, second, and third PDCP SDUs respectively.
  • These three PDCP SDUs are called PDCP SDU1, PDCP SDU2, and PDCP SDU respectively.
  • the arrival time of PDCP SDU1 (that is, the time to reach the PDCP layer) is T1
  • the arrival time of PDCP SDU2 is T1+ ⁇ T2
  • the arrival time of PDCP SDU3 is T1+ ⁇ T3.
  • the time points at which the PDCP timers of the three PDCP SDUs expire are all T1+Td1, where Td1 represents the length of the PDCP discard timer of PDCP SDU1.
  • the arrival time of the PDCP discard timer of the first PDCP SDU is 0, and the time starting point of the PDCP discard timer of the subsequent arriving PDCP SDU is 0, so, when the PDCP SDU arrives at the PDCP
  • the initial value of the PDCP discard timer of the PDCP SDU is the difference between the arrival time of the PDCP SDU and the arrival time of the first PDCP SDU, instead of starting from 0.
  • the time starting points of the PDCP discard timer of PDCP SDU1, the PDCP discard timer of PDCP SDU2, and the PDCP discard timer of PDCP SDU3 all start from 0.
  • the initial value of the PDCP discard timer of PDCP SDU1 is 0.
  • the initial value of the PDCP discard timer of PDCP SDU2 when PDCP SDU2 reaches the PDCP layer is ⁇ T2
  • the initial value of the PDCP discard timer of PDCP SDU3 when PDCP SDU3 arrives at the PDCP layer is ⁇ T3.
  • the method 1 is combined with the PDCP discard timer error threshold, so that the PDCP discard timer timeout interval of different PDCP SDUs in the PDCP SDU is less than the PDCP discard timer error threshold.
  • the time intervals between the time points when the PDCP discard timer of PDCP SDU1 expires, the time points when the PDCP discard timer of PDCP SDU2 expires, and the time points when the PDCP discard timer of PDCP SDU3 expires are less than The error threshold of the PDCP discard timer will not be described in detail here.
  • Method 2 A PDCP discard timer corresponding to the PDCP entity pre-configured by the network device for the terminal, in the PDCP SDU group, according to the time point when each PDCP SDU arrives at the PDCP layer and the time point when the first PDCP SDU arrives at the PDCP layer Adjust the length of the PDCP discard timer configured on the network device to obtain the length of the PDCP discard timer of each PDCP SDU, where the starting point of the PDCP discard timer of each PDCP SDU is the time when each PDCP SDU arrives at the PDCP layer point in time.
  • the length of the PDCP discard timer of the remaining PDCP SDUs is adjusted to be the same as the arrival time of the PDCP SDU and the first PDCP SDU difference in arrival time. Therefore, based on a PDCP discard timer pre-configured by the network device, even if the time starting point of the PDCP discard timer of each PDCP SDU in the PDCP SDU group is different, by adjusting the length of the PDCP discard timer, the PDCP SDU in the PDCP SDU group The timing at which the PDCP discard timer expires is the same.
  • the start time (i.e. the initial value) of the PDCP discard timer of the first PDCP is 0, and the time start point of the PDCP discard timer of subsequent PDCP SDUs arriving at the PDCP layer depends on the arrival of the PDCP SDU at the PDCP layer time, but they all start counting from 0.
  • the length of the PDCP discard timer of the PDCP SDU is set to the difference between the arrival time of the PDCP SDU and the arrival time of the first PDCP SDU.
  • the initial values of the PDCP discard timers of PDCP SDU1, PDCP SDU2, and PDCP SDU3 are all 0 (because the arrival times of PDCP SDU1, PDCP SDU2, and PDCP SDU3 are different, they actually start timing from different time points), PDCP
  • the PDCP discard timer length of SDU1 is Td1
  • the PDCP discard timer length Td2 of PDCP SDU2 is Td1- ⁇ T2
  • the PDCP discard timer length Td3 of PDCP SDU2 is Td1- ⁇ T3.
  • method 2 is combined with the PDCP discard timer error threshold, so that the PDCP discard timer timeout interval of different PDCP SDUs in the PDCP SDU is less than the PDCP discard timer error threshold, which will not be described in detail here .
  • Method 3 Multiple PDCP discard timers of different lengths corresponding to PDCP entities are pre-configured by the network device for the terminal.
  • the multiple PDCP discard timers are used sequentially according to the order in which each PDCP SDU arrives at the PDCP layer.
  • the network device sets multiple PDCP discard timers for the terminal for the PDCP entity.
  • the lengths of the multiple PDCP discard timers are different.
  • the terminal follows the order in which each PDCP SDU arrives at the PDCP layer.
  • the length of the discard timer is in descending order, and the PDCP discard timer suitable for each PDCP SDU is determined among multiple PDCP discard timers, so that the PDCP discard timers of each PDCP SDU in the PDCP SDU group expire at the same time point or
  • the timeout interval is smaller than the error threshold of the PDCP drop timer.
  • the network device pre-configures a set of PDCP discard timers corresponding to the PDCP entity for the terminal: PDCP discard timer 1, PDCP discard timer 2, and PDCP discard timer 3, where the length of PDCP discard timer 1 and the length of PDCP discard timer The length of timer 2 and the length of PDCP discard timer 3 are decremented in turn.
  • the terminal can determine that the PDCP discard timer of PDCU SDU1 is PDCP discard timer 1, the PDCP discard timer of PDCP SDU2 is PDCP discard timer 2, and the PDCP discard timer of PDCP SDU3 is PDCP discard timer 3 , thus, the PDCP discard timer timeout time of each PDCP SDU in the PDCP SDU group is similar.
  • an embodiment of the present disclosure provides a timer processing device, and the timer processing device in this embodiment may be a terminal.
  • the timer processing device may include a transceiver 501 , a processor 502 and a memory 503 .
  • the transceiver 501 is used for receiving and sending data under the control of the processor 502 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 502 and various circuits of the memory represented by the memory 503 are linked together.
  • the bus architecture can also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein.
  • the bus interface provides the interface.
  • Transceiver 501 may be a plurality of elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, fiber optic cables, etc. Transmission medium.
  • the timer processing device may also include a user interface 504.
  • the user interface 504 may also be an interface capable of connecting externally and internally to required equipment.
  • the connected equipment includes but is not limited to a keypad , monitors, speakers, microphones, joysticks, etc.
  • the processor 502 is responsible for managing the bus architecture and general processing, and the memory 503 can store data used by the processor 502 when performing operations.
  • the processor 502 may be a central processing unit (central processing unit, CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA ) or complex programmable logic device (Complex Programmable Logic Device, CPLD), the processor 502 can also adopt a multi-core architecture.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • FPGA field programmable gate array
  • CPLD Complex Programmable Logic Device
  • the processor 502 is configured to execute any of the methods related to the terminal provided in the embodiments of the present disclosure according to the obtained executable instructions by calling the computer program stored in the memory 503 .
  • the processor and memory may also be physically separated.
  • the processor 502 is configured to perform the following operations: determine a packet data convergence protocol PDCP service data unit SDU group, wherein the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group.
  • multiple PDCP SDUs in the PDCP SDU group are used to transmit multiple IP packets of the same data frame.
  • the time points at which the PDCP discard timers of different PDCP SDUs in the PDCP SDU group expire are the same, or the time interval at which the PDCP discard timers of different PDCP SDUs expire is less than or equal to the error threshold of the PDCP discard timer.
  • the processor 502 also performs at least one of the following operations:
  • the service to which the data frame belongs is a periodic service and there is only one data frame in one service period, it is determined that the PDCP SDU group includes all PDCP SDUs in the same service period;
  • the PDCP SDU group includes multiple PDCP SDUs for transmitting IP packets carrying the same data frame label
  • the PDCP SDU group includes PDCP SDUs used to transmit multiple IP packets of the same data frame;
  • the PDCP SDU carries a group identifier
  • At least two PDCP SDUs in the PDCP SDU group arrive at the PDCP layer at different time points, and the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group, including any of the following kind:
  • the starting point of the PDCP discard timer for all PDCP SDUs is the time point when the first PDCP SDU arrives at the PDCP layer.
  • All PDCP SDUs The time point when the PDCP discard timer of the SDU expires is the time point when the PDCP discard timer of the first PDCP SDU expires; or
  • the length of the PDCP discarding timer configured by the network equipment is adjusted to obtain the length of the PDCP discarding timer of each PDCP SDU, wherein the time starting point of the PDCP discarding timer of each PDCP SDU is the time point when each PDCP SDU arrives at the PDCP layer; or
  • one of the multiple PDCP discard timers is used sequentially according to the order in which each PDCP SDU arrives at the PDCP layer. .
  • the above-mentioned device provided by the present disclosure can implement all the method steps implemented by the terminal in the above-mentioned method embodiment, and can achieve the same technical effect.
  • the part and the beneficial effect are described in detail.
  • an embodiment of the present disclosure provides a timer processing apparatus, and the timer processing apparatus in this embodiment may be a network device.
  • the communication device includes: a transceiver 601 , a processor 602 and a memory 603 .
  • the transceiver 601 is used for receiving and sending data under the control of the processor 602 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 602 and various circuits of the memory represented by the memory 603 are linked together.
  • the bus architecture can also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein.
  • the bus interface provides the interface.
  • the transceiver 601 may be a plurality of components, including a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical cables, and other transmission media.
  • the processor 602 is responsible for managing the bus architecture and general processing, and the memory 603 can store data used by the processor 602 when performing operations.
  • the processor 602 may be a CPU, ASIC, FPGA or CPLD, and the processor may also adopt a multi-core architecture.
  • the processor 602 is configured to execute any of the methods related to the network device provided in the embodiments of the present disclosure according to the obtained executable instructions by calling the computer program stored in the memory 603 .
  • the processor and memory may also be physically separated.
  • the processor 602 is configured to perform the following operations: configure one or more PDCP discard timers corresponding to the PDCP entity for the terminal, and/or configure the PDCP discard timer error threshold corresponding to the PDCP entity for the terminal, where the PDCP discard timing
  • the detector error threshold is used to constrain the time interval when the PDCP discard timer of different PDCP SDUs in the PDCP SDU group of the PDCP entity expires.
  • the above-mentioned device provided by the present disclosure can implement all the method steps implemented by the network device in the above-mentioned method embodiment, and can achieve the same technical effect.
  • the same parts and beneficial effects are described in detail.
  • an embodiment of the present disclosure further provides a timer processing device, and the timer processing device in this embodiment may be a terminal.
  • the timer processing apparatus includes: a processing unit 701 .
  • the processing unit 701 is configured to determine a packet data convergence protocol PDCP service data unit SDU group, wherein the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group.
  • multiple PDCP SDUs in the PDCP SDU group are used to transmit multiple IP packets of the same data frame.
  • the time points at which the PDCP discard timers of different PDCP SDUs in the PDCP SDU group expire are the same, or the time interval at which the PDCP discard timers of different PDCP SDUs expire is less than or equal to the error threshold of the PDCP discard timer.
  • processing unit 701 is further configured to perform at least one of the following operations:
  • the service to which the data frame belongs is a periodic service and there is only one data frame in one service period, it is determined that the PDCP SDU group includes all PDCP SDUs in the same service period;
  • the PDCP SDU group includes multiple PDCP SDUs for transmitting IP packets carrying the same data frame label
  • the PDCP SDU group includes PDCP SDUs used to transmit multiple IP packets of the same data frame;
  • the PDCP SDU carries a group identifier
  • At least two PDCP SDUs in the PDCP SDU group arrive at the PDCP layer at different time points, and the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group, including any of the following kind:
  • the starting point of the PDCP discard timer for all PDCP SDUs is the time point when the first PDCP SDU arrives at the PDCP layer.
  • All PDCP SDUs The time point when the PDCP discard timer of the SDU expires is the time point when the PDCP discard timer of the first PDCP SDU expires; or
  • the length of the PDCP discarding timer configured by the network equipment is adjusted to obtain the length of the PDCP discarding timer of each PDCP SDU, wherein the time starting point of the PDCP discarding timer of each PDCP SDU is the time point when each PDCP SDU arrives at the PDCP layer; or
  • one of the multiple PDCP discard timers is used sequentially according to the order in which each PDCP SDU arrives at the PDCP layer. .
  • the above-mentioned device provided by the present disclosure can implement all the method steps implemented by the terminal in the above-mentioned method embodiment, and can achieve the same technical effect.
  • the part and the beneficial effect are described in detail.
  • an embodiment of the present disclosure further provides a timer processing device, and the timer processing device in this embodiment may be a network device.
  • the timer processing apparatus includes: a configuration unit 801 .
  • the configuration unit 801 is configured to configure one or more PDCP discard timers corresponding to the PDCP entity for the terminal, and/or configure the PDCP discard timer error threshold corresponding to the PDCP entity for the terminal, wherein the PDCP discard timer error threshold is used to constrain The time interval at which the PDCP discard timer of different PDCP SDUs in the PDCP SDU group of the PDCP entity expires.
  • the above-mentioned device provided by the present disclosure can implement all the method steps implemented by the network device in the above-mentioned method embodiment, and can achieve the same technical effect.
  • the same parts and beneficial effects are described in detail.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is implemented in the form of a software function unit and sold or used as an independent product, it can be stored in a processor-readable storage medium.
  • the technical solution of the present disclosure is essentially or part of the contribution to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .
  • an embodiment of the present disclosure provides a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is used to enable the processor to execute any of the terminal-related instructions provided in the embodiments of the present disclosure.
  • the processor can implement all the method steps implemented by the terminal in the above method embodiment, and can achieve the same technical effect, and the same parts and beneficial effects in this embodiment as in the method embodiment will not be described in detail here.
  • an embodiment of the present disclosure provides a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is used to enable a processor to execute any of the related network devices provided in the embodiments of the present disclosure. described method.
  • the processor can implement all the method steps implemented by the network device in the above method embodiment, and can achieve the same technical effect, and the same parts and beneficial effects in this embodiment as in the method embodiment will not be described in detail here.
  • the processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic storage (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)), etc.
  • magnetic storage e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage e.g., CD, DVD, BD, HVD, etc.
  • semiconductor memory such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)
  • the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Accordingly, the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) having computer-usable program code embodied therein.
  • processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the processor-readable memory produce a manufacturing product, the instruction device realizes the functions specified in one or more procedures of the flow chart and/or one or more blocks of the block diagram.
  • processor-executable instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented
  • the executed instructions provide steps for implementing the functions specified in the procedure or procedures of the flowchart and/or the block or blocks of the block diagrams.

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Abstract

本公开提供一种定时器处理方法、装置及存储介质，在终端一侧，该方法包括：确定PDCP SDU组，其中，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP定时器长度。从而，有利于实现PDCP SDU组中多个PDCP SDU的有效传输，实现数据帧中多个IP包的有效传输，在保证分组时延需求的同时提高空口资源效率。

Description

定时器处理方法、装置及存储介质
本公开要求于2021年09月16日提交中国专利局、申请号为202111089526.8、申请名称为“定时器处理方法、装置及存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及通信领域，尤其涉及一种定时器处理方法、装置及存储介质。
背景技术
在通信系统中，一些业务具有低时延、高吞吐量和高可靠性的要求，例如作为最重要的5G媒体应用之一的扩展现实(eXtened Reality，XR)和云游戏(Cloud Game，CG)。这类业务要求在短时间内进行较大数据的传输，短时间内其突发吞吐量可能远高于平均吞吐量，同时还需要保证高可靠性。这类业务中，存在以帧级数据包建模的业务(例如XR业务)，其业务特性要求是针对数据帧的，例如要求数据帧满足低时延。
在通信系统中，用户面空口协议栈包括服务数据适配协议(Service Data Adaptation Protocol，SDAP)层、分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路控制(Radio Link Control，RLC)层、媒体接入控制(Media Access Control，MAC)层以及物理层(Physical Layer，PHY)。在以帧级数据包建模的业务中，一个数据包对应一个数据帧，一个数据帧被分割出的多个IP包中的每个IP包在空口是独立传输的，即一个IP包映射到空口后对应一个PDCP服务数据单元(Service Data Unit，SDU)。
目前，为了避免拥塞以及为了对PCDP SDU进行及时传输，网络设备为上行的PDCP实体配置一个PDCP丢弃定时器(discardTimer)，每个PDCP SDU到达PDCP层的时候，都针对该PDCP SDU启动PDCP丢弃定时器，如果PDCP丢弃定时器超时该PDCP SDU未传递给下一协议层(即RLC层)，则丢弃该PDCP SDU。
发明内容
本公开提供一种定时器处理方法、装置及存储介质，用于解决数据帧中的多个IP包传输过程中，部分PDCP SDU的PDCP丢弃定时器已经超时的情况下剩下的PDCP SDU依旧在传输，导致空口资源效率低的问题。
第一方面，本公开提供一种定时器处理方法，应用于终端，包括：
确定分组数据汇聚协议PDCP服务数据单元SDU组，其中，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度。
在一些可选的实施方式中，PDCP SDU组中的多个PDCP SDU用于传输同一数据帧的多个IP包。
在一些可选的实施方式中，PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间点相同，或不同PDCP SDU的PDCP丢弃定时器超时的时间间隔小于或等于PDCP丢弃定时器误差阈值。
在一些可选的实施方式中，确定PDCP SDU组，包括以下至少一种：
在数据帧所属业务为周期性业务且一个业务周期仅有一个数据帧的情况下，确定PDCP SDU组包括同一业务周期内的所有PDCP SDU；
在IP包携带有数据帧标签的情况下，确定PDCP SDU组包括用于传输携带相同数据帧标签的IP包的多个PDCP SDU；
通过对PDCP SDU所传输的IP包进行深度包解析，确定PDCP SDU组包括用于传输同一数据帧的多个IP包的PDCP SDU；
在PDCP SDU携带有组标识的情况下，确定PDCP SDU组包括组标识相同的多个PDCP SDU，其中，PDCP SDU中的组标识来自服务数据适配协议SDAP协议数据单元PDU。
在一些可选的实施方式中，PDCP SDU组中至少两个PDCP SDU到达PDCP层的时间点不同，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度，包括以下任一种：
由网络设备为终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在PDCP SDU组中，所有PDCP SDU的PDCP丢弃定时器的时间起点为第一个PDCP SDU到达PDCP层的时间点，所有PDCP SDU的PDCP丢弃定时器超时的时间点为第一个PDCP SDU的PDCP丢弃定时器超时的时间点；或
由网络设备为终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在PDCP SDU组中，根据各PDCP SDU到达PDCP层的时间点与第一个PDCP SDU到达PDCP层的时间点的差值，对网络设备配置的PDCP丢弃定时器的长度进行调整，得到各PDCP SDU的PDCP丢弃定时器的长度，其中，各PDCP SDU的PDCP丢弃定时器的时间起点为各PDCP SDU到达PDCP层的时间点；或
由网络设备为终端预先配置的对应PDCP实体的多个长度不同的PDCP丢弃定时器，在PDCP SDU组中，根据各PDCP SDU到达PDCP层的先后顺序依次使用多个PDCP丢弃定时器中的其中一个。
第二方面，本公开提供一种定时器处理方法，应用于网络设备，包括：
为终端配置对应PDCP实体的一个或多个PDCP丢弃定时器，和/或为终端配置对应PDCP实体的PDCP丢弃定时器误差阈值，其中，PDCP丢弃定时器误差阈值用于约束PDCP实体的PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间间隔。
第三方面，本公开提供一种定时器处理装置，应用于终端，定时器处理装置包括存储器、收发机和处理器；
存储器，用于存储计算机程序；
收发机，用于在处理器的控制下收发数据；
处理器，用于读取存储器中的计算机程序并执行以下操作：
确定分组数据汇聚协议PDCP服务数据单元SDU组，其中，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度。
在一些可选的实施方式中，PDCP SDU组中的多个PDCP SDU用于传输同一数据帧 的多个IP包。
在一些可选的实施方式中，PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间点相同，或不同PDCP SDU的PDCP丢弃定时器超时的时间间隔小于或等于PDCP丢弃定时器误差阈值。
在一些可选的实施方式中，处理器还执行以下至少一种操作：
在数据帧所属业务为周期性业务且一个业务周期仅有一个数据帧的情况下，确定PDCP SDU组包括同一业务周期内的所有PDCP SDU；
在IP包携带有数据帧标签的情况下，确定PDCP SDU组包括用于传输携带相同数据帧标签的IP包的多个PDCP SDU；
通过对PDCP SDU所传输的IP包进行深度包解析，确定PDCP SDU组包括用于传输同一数据帧的多个IP包的PDCP SDU；
在PDCP SDU携带有组标识的情况下，确定PDCP SDU组包括组标识相同的多个PDCP SDU，其中，PDCP SDU中的组标识来自服务数据适配协议SDAP协议数据单元PDU。
在一些可选的实施方式中，PDCP SDU组中至少两个PDCP SDU到达PDCP层的时间点不同，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度，包括以下任一种：
由网络设备为终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在PDCP SDU组中，所有PDCP SDU的PDCP丢弃定时器的时间起点为第一个PDCP SDU到达PDCP层的时间点，所有PDCP SDU的PDCP丢弃定时器超时的时间点为第一个PDCP SDU的PDCP丢弃定时器超时的时间点；或
由网络设备为终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在PDCP SDU组中，根据各PDCP SDU到达PDCP层的时间点与第一个PDCP SDU到达PDCP层的时间点的差值，对网络设备配置的PDCP丢弃定时器的长度进行调整，得到各PDCP SDU的PDCP丢弃定时器的长度，其中，各PDCP SDU的PDCP丢弃定时器的时间起点为各PDCP SDU到达PDCP层的时间点；或
由网络设备为终端预先配置的对应PDCP实体的多个长度不同的PDCP丢弃定时器，在PDCP SDU组中，根据各PDCP SDU到达PDCP层的先后顺序依次使用多个PDCP丢弃定时器中的其中一个。
第四方面，本公开提供一种定时器处理装置，应用于网络设备，定时器处理装置包括存储器、收发机和处理器；
存储器，用于存储计算机程序；
收发机，用于在处理器的控制下收发数据；
处理器，用于读取存储器中的计算机程序并执行如下操作：
为终端配置对应PDCP实体的一个或多个PDCP丢弃定时器，和/或为终端配置对应PDCP实体的PDCP丢弃定时器误差阈值，其中，PDCP丢弃定时器误差阈值用于约束PDCP实体的PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间间隔。
第五方面，本公开提供一种定时器处理装置，应用于终端，定时器处理装置包括：
处理单元，用于确定分组数据汇聚协议PDCP服务数据单元SDU组，其中，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度。
在一些可选的实施方式中，PDCP SDU组中的多个PDCP SDU用于传输同一数据帧的多个IP包。
在一些可选的实施方式中，PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间点相同，或不同PDCP SDU的PDCP丢弃定时器超时的时间间隔小于或等于PDCP丢弃定时器误差阈值。
在一些可选的实施方式中，处理单元还用于执行以下至少一种操作：
在数据帧所属业务为周期性业务且一个业务周期仅有一个数据帧的情况下，确定PDCP SDU组包括同一业务周期内的所有PDCP SDU；
在IP包携带有数据帧标签的情况下，确定PDCP SDU组包括用于传输携带相同数据帧标签的IP包的多个PDCP SDU；
通过对PDCP SDU所传输的IP包进行深度包解析，确定PDCP SDU组包括用于传输同一数据帧的多个IP包的PDCP SDU；
在PDCP SDU携带有组标识的情况下，确定PDCP SDU组包括组标识相同的多个PDCP SDU，其中，PDCP SDU中的组标识来自服务数据适配协议SDAP协议数据单元PDU。
在一些可选的实施方式中，PDCP SDU组中至少两个PDCP SDU到达PDCP层的时间点不同，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度，包括以下任一种：
由网络设备为终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在PDCP SDU组中，所有PDCP SDU的PDCP丢弃定时器的时间起点为第一个PDCP SDU到达PDCP层的时间点，所有PDCP SDU的PDCP丢弃定时器超时的时间点为第一个PDCP SDU的PDCP丢弃定时器超时的时间点；或
由网络设备为终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在PDCP SDU组中，根据各PDCP SDU到达PDCP层的时间点与第一个PDCP SDU到达PDCP层的时间点的差值，对网络设备配置的PDCP丢弃定时器的长度进行调整，得到各PDCP SDU的PDCP丢弃定时器的长度，其中，各PDCP SDU的PDCP丢弃定时器的时间起点为各PDCP SDU到达PDCP层的时间点；或
由网络设备为终端预先配置的对应PDCP实体的多个长度不同的PDCP丢弃定时器，在PDCP SDU组中，根据各PDCP SDU到达PDCP层的先后顺序依次使用多个PDCP丢弃定时器中的其中一个。
第六方面，本公开提供一种定时器处理装置，应用于网络设备，定时器处理装置包括：
配置单元，用于为终端配置对应PDCP实体的一个或多个PDCP丢弃定时器，和/或为终端配置对应PDCP实体的PDCP丢弃定时器误差阈值，其中，PDCP丢弃定时器误差阈值用于约束PDCP实体的PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间间隔。
第七方面，本公开提供一种处理器可读存储介质，处理器可读存储介质存储有计算机程序，计算机程序用于使处理器执行第一方面或第二方面所述的定时器处理方法。
第八方面，本公开提供一种包含指令的计算机程序产品，当指令在计算机上运行时，使得计算机执行如上述第一方面或第二方面所述的定时器处理方法。
第九方面，本公开提供一种通信系统，包括上述任一所述的网络设备和至少一个如上 述任一所述的终端。
本公开提供了定时器处理方法、装置及存储介质，在该方法中，终端在PDCP层确定PDCP SDU组，其中，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度。相较于针对PDCP实体中维护一个PDCP丢弃定时器长度的方式，该方法充分考虑到一个数据帧的多个IP包的传输过程中不同PDCP SDU到达PDCP层的时间可能不同，通过针对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度的方式，有利于终端针对PDCP SDU到达PDCP层的时间，为PDCP SDU采用合适的PDCP丢弃定时器长度，解决数据帧中一个IP包所在PDCP SDU的PDCP丢弃定时器已经超时而该数据帧中的其他IP包依旧在传输的问题。
从而，有利于实现PDCP SDU组中多个PDCP SDU的有效传输，实现数据帧中多个IP包的有效传输，在保证分组时延需求的同时提高空口资源效率。
应当理解，上述发明内容部分中所描述的内容并非旨在限定本公开的实施例的关键或重要特征，亦非用于限制本公开的范围。本公开的其它特征将通过以下的描述变得容易理解。
附图说明
为了更清楚地说明本公开或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1(a)为XR业务以帧级数据包建模的示例图；
图1(b)为一个XR业务数据包映射为5G系统空口处的多个IP包的示例图；
图1(c)为用户面协议栈的示例图；
图2为本公开一实施例提供的应用场景示意图；
图3为本公开一实施例提供的定时器处理方法的流程图；
图4为一个数据帧中多个IP包的传输示例图；
图5为本公开一实施例提供的定时器处理装置的结构示意图；
图6为本公开另一实施例提供的定时器处理装置的结构示意图；
图7为本公开另一实施例提供的定时器处理装置的结构示意图；
图8为本公开另一实施例提供的定时器处理装置的结构示意图。
具体实施方式
本公开中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多个。
可以理解的，本公开实施例中的各步骤或操作仅是示例，本公开实施例还可以执行其它操作或者各种操作的变形。此外，各个步骤可以按照本公开实施例呈现的不同的顺序来执行，并且有可能并非要执行本公开实施例中的全部操作。
下面将结合本公开实施例中的附图，对本公开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公开一部分实施例，并不是全部的实施例。基于本公开中的实施例，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，都属于本公开保护的范围。
本公开实施例提供的技术方案可以适用于多种系统，尤其是5G系统。例如适用的系统可以是全球移动通讯(global system of mobile communication，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)通用分组无线业务(general packet radio service，GPRS)系统、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)系统、高级长期演进(long term evolution advanced，LTE-A)系统、通用移动系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)系统、5G新空口(New Radio,NR)系统等。这多种系统中均包括终端和网络设备。系统中还可以包括核心网部分，例如演进的分组系统(Evloved Packet System,EPS)、5G系统(5GS)等。
本公开实施例涉及的终端，可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备等。在不同的系统中，终端的名称可能也不相同，例如在5G系统中，终端可以称为用户设备(User Equipment，UE)。无线终端可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网(Core Network,CN)进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发起协议(Session Initiated Protocol，SIP)话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)等设备。无线终端也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point)、远程终端(remote terminal)、接入终端(access terminal)、用户终端(user terminal)、用户代理(user agent)、用户装置(user device)，本公开实施例中并不限定。
本公开实施例涉及的网络设备，可以是基站，该基站可以包括多个为终端提供服务的小区。根据具体应用场合不同，基站又可以称为接入点，或者可以是接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备，或者其它名称。网络设备可用于将收到的空中帧与网际协议(Internet Protocol，IP)分组进行相互更换，作为无线终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)通信网络。网络设备还可协调对空中接口的属性管理。例如，本公开实施例涉及的网络设备可以是全球移动通信系统(Global System for Mobile communications，GSM)或码分多址接入(Code Division  Multiple Access，CDMA)中的网络设备(Base Transceiver Station，BTS)，也可以是带宽码分多址接入(Wide-band Code Division Multiple Access，WCDMA)中的网络设备(NodeB)，还可以是长期演进(long term evolution，LTE)系统中的演进型网络设备(evolutional Node B，eNB或e-NodeB)、5G网络架构(next generation system)中的5G基站(gNB)，也可以是家庭演进基站(Home evolved Node B，HeNB)、中继节点(relay node)、家庭基站(femto)、微微基站(pico)等，本公开实施例中并不限定。在一些网络结构中，网络设备可以包括集中单元(centralized unit，CU)节点和分布单元(distributed unit，DU)节点，集中单元和分布单元也可以地理上分开布置。
网络设备与终端之间可以各自使用一或多根天线进行多输入多输出(Multi Input Multi Output,MIMO)传输，MIMO传输可以是单用户MIMO(Single User MIMO,SU-MIMO)或多用户MIMO(Multiple User MIMO,MU-MIMO)。根据根天线组合的形态和数量，MIMO传输可以是2D-MIMO、3D-MIMO、FD-MIMO或massive-MIMO，也可以是分集传输或预编码传输或波束赋形传输等。
首先，对本公开实施例所要解决的技术问题的发现进行描述。
以XR业务为例，XR业务在5G系统中以帧级数据包(即基于数据帧建模)建模，每个数据包(Packet，又称为分组)对应一个数据帧(在XR业务中又称为XR视频帧)，每个数据帧可以分割为多个IP包。其中，XR是不同类型的现实的总称，指的是由计算机技术和设备产生的所有真实和虚拟相结合的环境和人机交互，包括增强显示(Augmented Reality，AR)、混合现实(Mixed Reality，MR)和虚拟现实(Virtual Reality，VR)等代表形式。
参考图1(a)和图1(b)，图1(a)为XR业务以帧级数据包建模的示例图，图1(b)为一个XR业务数据包映射为5G系统空口处的多个IP包的示例图。如图1(a)所示，XR业务中包括遵循一定概率分布的数据包，以数据包K和数据包K+1为例，数据包K表示包含多个IP包的数据帧K，数据包K+1表示包含多个IP包的数据帧K+1，数据帧的平均周期为1帧每秒(frame per second，fps)。如图1(b)所示，4个XR业务数据包分别映射为无线接入网(Radio Access Network，RAN)侧的多个IP包，例如，第1个XR数据包映射RAN侧的前3个IP包，其中，t表示时间，T表示时长。
在XR业务中，业务特性要求是针对数据帧的，例如，对数据帧的业务特性需求为周期60fps、数据传输速率10兆比特/秒(Million bits per second，Mbps)、分组时延预算(Packet Delay Budget)30毫秒(ms)。因此，数据帧的传输速度、可靠性、时延等等对于该类业务来说十分关键。
在XR业务中，空口传输是以IP包为基本单位进行的，也就是一个数据帧的每个IP包在空口是独立传输的，具体来说，一个IP映射到空口，在PDCP层对应一个PDCP服务数据单元(Service Data Unit，SDU)。为便于理解，图1(c)示出了用户面协议栈的示例图。如图1(c)所示，在终端侧和网络侧，用户面空口协议栈包括了多个用户面空口协议层：服务数据适配协议(Service Data Adaptation Protocol，SDAP)层、分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路控制(Radio Link Control，RLC)层、媒体接入控制(Media Access Control，MAC)层以及物理层(Physical Layer，PHY)。一个IP包到达SDAP层后形成SDAP协议数据单元(Protocol Data Unit，PDU)， SDAP PDU传递到PDCP层即为PDCP SDU。
目前，网络设备基于PDCP实体所对应数据无线承载(Data Radio Bear，DRB)的分组预算时延(Packet Delay Budget，PDB)，为该PDCP实体配置一个PDCP丢弃定时器，每个PDCP SDU到达PDCP层的时候，都针对该PDCP SDU启动PDCP丢弃定时器，如果PDCP丢弃定时器超时该PDCP SDU未传递给下一协议层，则丢弃该PDCP SDU。
然而，由于XR业务的一个数据帧分割得到的多个IP包到达PDCP层的时间有先有后，且设备内部还存在处理时延，这些IP包到达PDCP层的时间还可以有一定的差值，在IP包的传输过程中，采用上述方式，可能出现一个IP包对应的PDCP SDU的PDCP丢弃定时器已经超时，而其他IP包对应的PDCP SDU依旧在传输的情况，导致空口资源的浪费，空口资源效率较低。
为解决上述问题，本公开实施例提供了一种定时器处理方法、装置及存储介质，在终端一侧，该方法包括：确定PDCP SDU组，其中，终端对PDCP SDU维护不同的PDCP丢弃定时器长度，从而，针对数据帧中IP包到达PDCP层的时间不同的情况，终端可以基于IP包到达时间的不同为包含IP包的PDCP SDU维护不同的PDCP丢弃定时器长度，能够为不同的PDCP SDU维护合适的PDB，解决数据帧中不同IP包超时的时间点存在一定差值的情况，进而可以解决数据帧中一个或多个IP包超时后其他IP包依旧在传输的问题，节约了空口资源，提高了空口资源效率。
其中，方法和装置是基于同一申请构思的，由于方法和装置解决问题的原理相似，因此装置和方法的实施可以相互参见，重复之处不再赘述。
需要说明的是，本公开实施例中的数据帧不限于XR业务中的数据帧，还可以是其他以帧级数据包建模的业务中的数据帧。
参考图2，图2为本公开一实施例提供的应用场景示意图。如图2所示，本实施例提供了一种通信系统，该通信系统包括网络设备210和终端220，其中，本实施例以其中3个终端320为例示出。在通信系统中，终端220向网络设备210发送业务(例如XR业务)的数据帧，在发送过程中，终端220将数据帧的多个IP包依次在多个用户面空口协议层进行处理后，发送至网络设备210，在终端220与网络设备210之间实现数据帧的传输。
参考图3，图3为本公开一实施例提供的定时器处理方法的流程示意图。如图3所示，本实施例的方法可以包括：
S301、网络设备为终端预先配置对应PDCP实体的一个或多个PDCP丢弃定时器，和/或为终端配置对应PDCP实体的PDCP丢弃定时器误差阈值。
本实施例中，针对各PDCP实体，网络设备可通过预先向终端发送配置消息的方式，向终端配置PDCP实体所对应的PDCP丢弃定时器和/或PDCP丢弃定时器误差阈值。其中，配置方式包括如下至少一种：网络设备向终端配置PDCP实体对应的一个PDCP丢弃定时器、网络设备向终端配置PDCP实体对应的多个PDCP丢弃定时器、网络设备向终端配置PDCP实体对应的PDCP丢弃定时器误差阈值。其中，网络设备向终端配置PDCP实体对应的PDCP丢弃定时器误差阈值，可以与网络设备向终端配置PDCP实体对应的一个PDCP丢弃定时器、网络设备向终端配置PDCP实体对应的多个PDCP丢弃定时器这两种配置方式组合，
其中，PDCP丢弃定时器误差阈值用于约束PDCP实体中多个PDCP SDU的PDCP丢 弃定时器超时的时间间隔，尤其地，用于约束后续PDCP SDU组中不同的PDCP SDU的PDCP丢弃定时器的超时时间间隔，使得PDCP SDU组中的多个PDCP SDU具有相近的传输特性。
S302、终端确定PDCP SDU组，其中，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度。
本实施例中，终端在发送某一业务的数据帧的多个IP包的过程中，将多个IP包在用户面协议栈的多个用户面空口协议层中进行一层层处理，其中，IP包到达SDAP层后形成SDAP PDU，SDAP PDU传递至PDCP层后为PDCP SDU。在PDCP层，终端可在到达PDCP层的多个PDCP SDU中，确定PDCP SDU组，其中，PDCP SDU组包括多个PDCP SDU。其中，在确定PDCP SDU组后，终端可基于为PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度，利用PDCP SDU组传输数据。
本实施例中，针对PDCP SDU组，终端可在网络设备为PDCP SDU组所属PDCP实体预先配置的PDCP丢弃定时器的基础上，为PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度。尤其在PDCP SDU组中多个PDCP SDU的到达时间不同的情况下，终端可以为到达PDCP层的时间较早的PDCP SDU维护较长的PDCP丢弃定时器长度，为到达PDCP层的时间较晚的PDCP SDU维护较短的PDCP丢弃定时器长度，使得PDCP SDU组中多个PDCP SDU的PDCP丢弃定时器超时的时间点尽可能相接近，即使得PDCP SDU组中多个PDCP SDU所传输的IP包具有相近的传输特征。
在一些可选的实施方式中，在网络设备为终端配置了对应PDCP实体的PDCP丢弃定时器误差阈值的情况下，终端可维护PDCP SDU组中多个PDCP SDU的PDCP丢弃定时器超时的时间间隔小于或等于PDCP丢弃定时器误差阈值。
其中，PDCP丢弃定时器误差阈值的设置是考虑到PDCP丢弃定时器计时过程有一定的容错性而预留的误差空间。
本实施例中，终端可基于对PDCP SDU组中的多个PDCP SDU维护的不同的PDCP丢弃定时器长度：一方面，可在一个PDCP SDU的PDCP丢弃定时器超时后，及时丢弃已无效的PDCP SDU，节约空口资源，提高空口资源效率；另一方面，可以在PDCP SDU组中PDCP SDU的PDCP丢弃定时器即将超时前及时传输对应的PDCP SDU，实现传输时延保障，实现PDCP SDU组中多个PDCP SDU的有效传输。
本公开实施例中，网络设备为终端预先配置PDCP实体对应的一个或多个PDCP超时定时器和/或PDCP丢弃定时器误差阈值，考虑到PDCP SDU组中PDCP SDU到达PDCP层的时间可能不同，在数据帧的传输过程中，终端为PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度，使得PDCP SDU组中多个PDCP SDU具有相近的传输特效，在保证PDB的同时实现PDCP SDU组中多个PDCP SDU的有效传输，实现数据帧中多个IP包的有效传输，提高空口资源效率。
在一些实施例中，PDCP SDU组中的多个PDCP SDU用于传输同一数据帧的多个IP包，换句话说，PDCP SDU组中的多个PDCP SDU包含同一数据帧的多个IP包。此时，考虑到同一数据帧的多个IP包到达PDCP层的时间不同，终端通过为同一数据帧的多个IP包所对应的PDCP SDU维护不同的PDCP丢弃定时器长度的方式，使得同一数据帧的多个IP包在PDCP层传输时具有相近的传输特效，具体来说，使得用于传输同一数据帧 的IP包的PDCP SDU的PDCP丢弃定时器超时的时间点接近，解决同一数据帧中一个IP包所在PDCP SDU的PDCP丢弃定时器超时后剩余IP包依旧在传输的问题。
在一些实施例中，PDCP SDU组中不同的PDCP SDU的PDCP丢弃定时器超时的时间点相同，或者，PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间间隔小于或等于PDCP丢弃定时器误差阈值。此时，终端为PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度，以使PDCP SDU组中不同的PDCP SDU的PDCP丢弃定时器超时的时间点相同，或者，以使PDCP SDU组中不同的PDCP SDU的PDCP丢弃定时器超时的时间点的时间间隔小于或等于PDCP丢弃定时器误差阈值。从而，解决同一数据帧中一个IP包所在PDCP SDU的PDCP丢弃定时器超时后剩余IP包依旧在传输的问题，有利于促进终端在PDCP SDU组中多个PDCP SDU的PDCP丢弃定时器相近的超时时间点之前及时将IP包传输至低一层。
在一些实施例中，基于PDCP SDU组中的多个PDCP SDU用于传输同一数据帧的多个IP，S301的可能的实现方式包括如下至少一种：
1)在数据帧所属业务为周期性业务且一个业务周期仅有一个数据帧的情况下，一个业务周期内达到PDCP层的IP包为属于同一数据帧的IP包，因此终端可确定PDCP SDU组包括同一业务周期内的所有PDCP SDU。从而，在数据帧属于周期性业务的业务数据时，可以基于业务周期确定PDCP SDU组，提高确定PDCP SDU组的准确性。其中，终端可以从应用层获知数据帧是否属于周期性业务数据，在此不做限制
2)在IP包携带有数据帧标签的情况下，确定PDCP SDU组包括用于传输携带相同数据帧标签的IP包的多个PDCP SDU。其中，同一数据帧的多个IP携带相同的数据帧标签，不同数据帧的IP包携带的数据帧标签不同，换句话说，数据帧对应的数据帧标签唯一。从而，在IP包携带有数据帧标签的情况下，基于数据帧标签提高PDCP SDU组的准确性。其中，终端可以在应用层为同一数据帧的多个IP包添加相同的数据帧标签，为不同数据帧的IP包添加不同的数据帧，在此对在IP包中添加数据帧标签的具体过程不做限制。
3)通过对PDCP SDU所传输的IP包进行深度包解析，确定PDCP SDU组包括用于传输同一数据帧的多个IP包的PDCP SDU。其中，深度包解析是指通过IP包解析获得帧特性，利用解析得到的帧特效可以确定属于同一数据帧的多个IP包，进而确定PDCP SDU组。
具体的，在PDCP层，对多个PDCP SDU包含的IP包进行深度包解析，得到IP包的内层信息(IP包的内层信息可以反映帧特性)，根据IP包的内层信息确定IP包所属的数据帧，根据多个IP包所属的数据帧，确定属于同一数据帧的多个IP包，再确定用于传输同一数据帧的IP包的多个PDCP SDU，由该多个PDCP SDU，得到PDCP SDU组。从而，基于深度包解析的方式，提高确定PDCP SDU组的准确性。
4)在PDCP SDU携带有组标识的情况下，确定PDCP SDU组包括组标识相同的多个PDCP SDU，其中，PDCP SDU中的组标识来自SDAP PDU。其中，传输同一数据帧的IP包的多个PDCP SDU属于同一个PDCP SDU组，组标识用于标识该PDCP SDU组，相应地可用于标识数据帧，是在本实施例中为了对一个数据帧包含的多个IP包进行归类而引入的标识，携带相同组标识的PDCP SDU所包含的IP包属于同一数据帧。
具体的，终端可在SDAP层根据IP包的数据帧标签或者对IP包进行深度包解析，确 定属于同一数据帧的多个IP包，针对属于同一数据帧的多个IP包，在用于传输这些IP包的SDAP PDU中携带相同的组标识，再将SDAP PDU发送至PDCP层。SDAP PDU到达PDCP层后，终端再基于PDCP SDU中携带的组标识，确定携带的组标识相同的多个PDCP SDU，基于携带的组标识相同的多个PDCP SDU，得到PDCP SDU组。从而，通过为用于传输同一数据帧的IP包的SDAP PDU添加相同组标识以及在PDCP层基于组标识确定PDCP SDU组的方式，提高PDCP SDU组的准确性。
在一些实施例中，PDCP SDU组中至少两个PDCP SDU到达PDCP层的时间点不同，在这种情况下，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度，以解决不同时间到达PDCP层的PDCP SDU中出现一个PDCP SDU超时其他PDCP SDU依旧在传输的问题。
其中，PDCP丢弃定时器长度为PDCP丢弃定时器的实际计时时长。
其中，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度，包括如下至少一种方式：
方式一：由网络设备为终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在PDCP SDU组中，所有PDCP SDU的PDCP丢弃定时器的时间起点为第一个PDCP SDU到达PDCP层的时间点，所有PDCP SDU的PDCP丢弃定时器超时的时间点为第一个PDCP SDU的PDCP丢弃定时器超时的时间点。其中，第一个PDCP SDU是指PDCP SDU组中第一个到达PDCP层的PDCP SDU。
本实施例中，针对PDCP SDU组中的多个PDCP SDU，通过除第一个PDCP SDU之外，将剩余PDCP SDU的PDCP丢弃定时器的时间起点都统一为第一个PDCP SDU到达PDCP层的时间点，使得PDCP SDU组中各PDCP SDU的PDCP丢弃定时器的时间起点一致，再结合网络设备为终端配置对应PDCP实体的一个PDCP丢弃定时器，PDCP SDU组中各PDCP SDU的PDCP丢弃定时器超时的时间点也一致。在各PDCP SDU的PDCP丢弃定时器的时间起点一致且超时的时间点也一致的情况下，到达PDCP层较早的PDCP SDU对应的PDCP丢弃定时器先开始计时，到达PDCP层较晚的PDCP SDU对应的PDCP丢弃定时器后开始计时，所以，到达PDCP层的时间不同的PDCP SDU所对应的PDCP丢弃定时器的实际计时时长不同。
从而，PDCP SDU组中各PDCP SDU的PDCP丢弃定时器超时的时间点相同，避免了PDCP SDU组中一个PDCP SDU的PDCP丢弃定时器超时而其他PDCP SDU还在传输的情况，同时，有利于促使终端在各个PDCP丢弃定时器统一的超时时间点之前完成PDCP SDU的传输，有利于实现PDCP SDU的有效传输，保证PDB的同时提高了空口资源效率。
作为示例的，参考图4，图4为一个数据帧中多个IP包的传输示例图。如图4所示，一个数据帧分割得到三个IP包，这三个IP包分别映射到到第1、2、3个PDCP SDU，将这三个PDCP SDU分别称为PDCP SDU1、PDCP SDU2、PDCP SDU3。其中，PDCP SDU1的到达时间(即到达PDCP层的时间)为T1，PDCP SDU2的到达时间为T1+δT2，PDCP SDU3的到达时间为T1+δT3。这三个PDCP SDU的PDCP定时器超时的时间点都为T1+Td1，其中，Td1表示PDCP SDU1的PDCP丢弃定时器长度。
在方式1中，在PDCP SDU组中，第一个PDCP SDU的PDCP丢弃定时器的到达时间为0，后续到达的PDCP SDU的PDCP丢弃定时器的时间起点为0，如此，在PDCP SDU 到达PDCP层时，PDCP SDU的PDCP丢弃定时器开始计时的初始值为该PDCP SDU的到达时间为第一个PDCP SDU的到达时间的差值，而不是从0开始计时。例如，参照图4，PDCP SDU1的PDCP丢弃定时器、PDCP SDU2的PDCP丢弃定时器、PDCP SDU3的PDCP丢弃定时器的时间起点均从0开始，如此，PDCP SDU1的PDCP丢弃定时器的初始值为0，PDCP SDU2到达PDCP层时PDCP SDU2的PDCP丢弃定时器开始计时的初始值为δT2，PDCP SDU3到达PDCP层时PDCP SDU3的PDCP丢弃定时器开始计时的初始值为δT3。
在一些可选的实施方式中，结合方式一与PDCP丢弃定时器误差阈值，使得PDCP SDU中不同PDCP SDU的PDCP丢弃定时器超时的时间间隔小于PDCP丢弃定时器误差阈值。以图4为例，使得PDCP SDU1的PDCP丢弃定时器超时的时间点、PDCP SDU2的PDCP丢弃定时器超时的时间点、PDCP SDU3的PDCP丢弃定时器超时的时间点两两之间的时间间隔小于PDCP丢弃定时器误差阈值，在此不进行详述。
方式二：由网络设备为终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在PDCP SDU组中，根据各PDCP SDU到达PDCP层的时间点与第一个PDCP SDU到达PDCP层的时间点的差值，对网络设备配置的PDCP丢弃定时器的长度进行调整，得到各PDCP SDU的PDCP丢弃定时器的长度，其中，各PDCP SDU的PDCP丢弃定时器的时间起点为各PDCP SDU到达PDCP层的时间点。
本实施例中，针对PDCP SDU组中的多个PDCP SDU，通过除第一个PDCP SDU之外，将剩余PDCP SDU的PDCP丢弃定时器的长度调整为PDCP SDU的到达时间与第一个PDCP SDU的到达时间的差值。从而，基于网络设备预先配置的一个PDCP丢弃定时器，即使PDCP SDU组中各PDCP SDU的PDCP丢弃定时器的时间起点不同，通过调整PDCP丢弃定时器的长度，使得PDCP SDU组中各PDCP SDU的PDCP丢弃定时器超时的时间点一致。
例如，在PDCP SDU组中，第一个PDCP的PDCP丢弃定时器的时间起点(即初始值)为0，后续到达PDCP层的PDCP SDU的PDCP丢弃定时器的时间起点取决于PDCP SDU达到PDCP层的时间，但都是从0开始计时。针对后续到达PDCP层的PDCP SDU，将PDCP SDU的PDCP丢弃定时器的长度设为该PDCP SDU的到达时间与第一个PDCP SDU的到达时间的差值。参照图4，PDCP SDU1、PDCP SDU2、PDCP SDU3的PDCP丢弃定时器的初始值均为0(由于PDCP SDU1、PDCP SDU2、PDCP SDU3的到达时间不同，实际是从不同的时间点开始计时)，PDCP SDU1的PDCP丢弃定时器长度为Td1，PDCP SDU2的PDCP丢弃定时器长度Td2为Td1-δT2，PDCP SDU2的PDCP丢弃定时器长度Td3为Td1-δT3。
在一些可选的实施方式中，结合方式二与PDCP丢弃定时器误差阈值，使得PDCP SDU中不同PDCP SDU的PDCP丢弃定时器超时的时间间隔小于PDCP丢弃定时器误差阈值，在此不进行详述。
方式三：由网络设备为终端预先配置的对应PDCP实体的多个长度不同的PDCP丢弃定时器，在PDCP SDU组中，根据各PDCP SDU到达PDCP层的先后顺序依次使用多个PDCP丢弃定时器中的其中一个。
本实施例中，网络设备为终端针对PDCP实体设置多个PDCP丢弃定时器，多个PDCP 丢弃定时器的长度不同，终端在PDCP SDU组中，根据各PDCP SDU到达PDCP层的先后顺序，按照PDCP丢弃定时器的长度从大到小的顺序，在多个PDCP丢弃定时器中确定适合各个PDCP SDU的PDCP丢弃定时器，使得PDCP SDU组中各个PDCP SDU的PDCP丢弃定时器超时的时间点一致或者超时的时间间隔小于PDCP丢弃定时器误差阈值。
例如，网络设备为终端预先配置对应PDCP实体的一组PDCP丢弃定时器：PDCP丢弃定时器1、PDCP丢弃定时器2、PDCP丢弃定时器3，其中，PDCP丢弃定时器1的长度、PDCP丢弃定时器2的长度、PDCP丢弃定时器3的长度依次递减。以图4为例，终端可确定PDCU SDU1的PDCP丢弃定时器为PDCP丢弃定时器1、PDCP SDU2的PDCP丢弃定时器为PDCP丢弃定时器2、PDCP SDU3的PDCP丢弃定时器为PDCP丢弃定时器3，从而，是的PDCP SDU组中各PDCP SDU的PDCP丢弃定时器超时时间相近。
在终端侧，本公开实施例提供了一种定时器处理装置，本实施例的定时器处理装置可以为终端。如图5所示，定时器处理装置可以包括收发机501、处理器502和存储器503。
收发机501，用于在处理器502的控制下接收和发送数据。
其中，在图5中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器502代表的一个或多个处理器和存储器503代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机501可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元，这些传输介质包括，这些传输介质包括无线信道、有线信道、光缆等传输介质。在一些可选的实施方式中，定时器处理装置还可以包括用户接口504，针对不同的用户设备，用户接口504还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器502负责管理总线架构和通常的处理，存储器503可以存储处理器502在执行操作时所使用的数据。
在一些可选的实施方式中，处理器502可以是中央处理器(central processing unit，CPU)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field－Programmable Gate Array，FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device，CPLD)，处理器502也可以采用多核架构。
处理器502通过调用存储器503存储的计算机程序，用于按照获得的可执行指令执行本公开实施例提供的有关终端的任一所述方法。处理器与存储器也可以物理上分开布置。
具体的，处理器502用于执行以下操作：确定分组数据汇聚协议PDCP服务数据单元SDU组，其中，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度。
在一些可选的实施方式中，PDCP SDU组中的多个PDCP SDU用于传输同一数据帧的多个IP包。
在一些可选的实施方式中，PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间点相同，或不同PDCP SDU的PDCP丢弃定时器超时的时间间隔小于或等于PDCP丢弃定时器误差阈值。
在一些可选的实施方式中，处理器502还执行以下至少一种操作：
在数据帧所属业务为周期性业务且一个业务周期仅有一个数据帧的情况下，确定PDCP SDU组包括同一业务周期内的所有PDCP SDU；
在IP包携带有数据帧标签的情况下，确定PDCP SDU组包括用于传输携带相同数据帧标签的IP包的多个PDCP SDU；
通过对PDCP SDU所传输的IP包进行深度包解析，确定PDCP SDU组包括用于传输同一数据帧的多个IP包的PDCP SDU；
在PDCP SDU携带有组标识的情况下，确定PDCP SDU组包括组标识相同的多个PDCP SDU，其中，PDCP SDU中的组标识来自服务数据适配协议SDAP协议数据单元PDU。
在一些可选的实施方式中，PDCP SDU组中至少两个PDCP SDU到达PDCP层的时间点不同，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度，包括以下任一种：
由网络设备为终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在PDCP SDU组中，所有PDCP SDU的PDCP丢弃定时器的时间起点为第一个PDCP SDU到达PDCP层的时间点，所有PDCP SDU的PDCP丢弃定时器超时的时间点为第一个PDCP SDU的PDCP丢弃定时器超时的时间点；或
由网络设备为终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在PDCP SDU组中，根据各PDCP SDU到达PDCP层的时间点与第一个PDCP SDU到达PDCP层的时间点的差值，对网络设备配置的PDCP丢弃定时器的长度进行调整，得到各PDCP SDU的PDCP丢弃定时器的长度，其中，各PDCP SDU的PDCP丢弃定时器的时间起点为各PDCP SDU到达PDCP层的时间点；或
由网络设备为终端预先配置的对应PDCP实体的多个长度不同的PDCP丢弃定时器，在PDCP SDU组中，根据各PDCP SDU到达PDCP层的先后顺序依次使用多个PDCP丢弃定时器中的其中一个。
在此需要说明的是，本公开提供的上述装置，能够实现上述方法实施例中终端所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
在网络侧，本公开实施例提供了一种定时器处理装置，本实施例的定时器处理装置可以为网络设备。如图6所示，通信装置包括：收发机601、处理器602和存储器603。
收发机601，用于在处理器602的控制下接收和发送数据。
其中，在图6中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器602代表的一个或多个处理器和存储器603代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机601可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元，这些传输介质包括无线信道、有线信道、光缆等传输介质。处理器602负责管理总线架构和通常的处理，存储器603可以存储处理器602在执行操作时所使用的数据。
处理器602可以是CPU、ASIC、FPGA或CPLD，处理器也可以采用多核架构。
处理器602通过调用存储器603存储的计算机程序，用于按照获得的可执行指令执行本公开实施例提供的有关网络设备的任一所述方法。处理器与存储器也可以物理上分开布 置。
具体的，处理器602用于执行如下操作：为终端配置对应PDCP实体的一个或多个PDCP丢弃定时器，和/或为终端配置对应PDCP实体的PDCP丢弃定时器误差阈值，其中，PDCP丢弃定时器误差阈值用于约束PDCP实体的PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间间隔。
在此需要说明的是，本公开提供的上述装置，能够实现上述方法实施例中网络设备所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
在终端侧，本公开实施例还提供了一种定时器处理装置，本实施例的定时器处理装置可以为终端。如图7所示，定时器处理装置包括：处理单元701。
处理单元701，用于确定分组数据汇聚协议PDCP服务数据单元SDU组，其中，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度。
在一些可选的实施方式中，PDCP SDU组中的多个PDCP SDU用于传输同一数据帧的多个IP包。
在一些可选的实施方式中，PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间点相同，或不同PDCP SDU的PDCP丢弃定时器超时的时间间隔小于或等于PDCP丢弃定时器误差阈值。
在一些可选的实施方式中，处理单元701还用于执行以下至少一种操作：
在数据帧所属业务为周期性业务且一个业务周期仅有一个数据帧的情况下，确定PDCP SDU组包括同一业务周期内的所有PDCP SDU；
在IP包携带有数据帧标签的情况下，确定PDCP SDU组包括用于传输携带相同数据帧标签的IP包的多个PDCP SDU；
通过对PDCP SDU所传输的IP包进行深度包解析，确定PDCP SDU组包括用于传输同一数据帧的多个IP包的PDCP SDU；
在PDCP SDU携带有组标识的情况下，确定PDCP SDU组包括组标识相同的多个PDCP SDU，其中，PDCP SDU中的组标识来自服务数据适配协议SDAP协议数据单元PDU。
在一些可选的实施方式中，PDCP SDU组中至少两个PDCP SDU到达PDCP层的时间点不同，终端对PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度，包括以下任一种：
由网络设备为终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在PDCP SDU组中，所有PDCP SDU的PDCP丢弃定时器的时间起点为第一个PDCP SDU到达PDCP层的时间点，所有PDCP SDU的PDCP丢弃定时器超时的时间点为第一个PDCP SDU的PDCP丢弃定时器超时的时间点；或
由网络设备为终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在PDCP SDU组中，根据各PDCP SDU到达PDCP层的时间点与第一个PDCP SDU到达PDCP层的时间点的差值，对网络设备配置的PDCP丢弃定时器的长度进行调整，得到各PDCP SDU的PDCP丢弃定时器的长度，其中，各PDCP SDU的PDCP丢弃定时器的时间起点为各PDCP SDU到达PDCP层的时间点；或
由网络设备为终端预先配置的对应PDCP实体的多个长度不同的PDCP丢弃定时器， 在PDCP SDU组中，根据各PDCP SDU到达PDCP层的先后顺序依次使用多个PDCP丢弃定时器中的其中一个。
在此需要说明的是，本公开提供的上述装置，能够实现上述方法实施例中终端所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
在网络侧，本公开实施例还提供了一种定时器处理装置，本实施例的定时器处理装置可以为网络设备。如图8所示，定时器处理装置包括：配置单元801。
配置单元801，用于为终端配置对应PDCP实体的一个或多个PDCP丢弃定时器，和/或为终端配置对应PDCP实体的PDCP丢弃定时器误差阈值，其中，PDCP丢弃定时器误差阈值用于约束PDCP实体的PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间间隔。
在此需要说明的是，本公开提供的上述装置，能够实现上述方法实施例中网络设备所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
需要说明的是，本公开实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个处理器可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
终端侧，本公开实施例提供了一种处理器可读存储介质，处理器可读存储介质存储有计算机程序，计算机程序用于使处理器执行本公开实施例提供的有关终端的任一所述方法。使处理器能够实现上述方法实施例中终端所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
网络侧，本公开实施例提供了一种处理器可读存储介质，处理器可读存储介质存储有计算机程序，计算机程序用于使处理器执行本公开实施例提供的有关网络设备的任一所述方法。使处理器能够实现上述方法实施例中网络设备所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
所述处理器可读存储介质可以是处理器能够存取的任何可用介质或数据存储设备，包括但不限于磁性存储器(例如软盘、硬盘、磁带、磁光盘(MO)等)、光学存储器(例如CD、DVD、BD、HVD等)、以及半导体存储器(例如ROM、EPROM、EEPROM、 非易失性存储器(NAND FLASH)、固态硬盘(SSD))等。
本领域内的技术人员应明白，本公开的实施例可提供为方法、系统、或计算机程序产品。因此，本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本公开是参照根据本公开实施例的方法、装置、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机可执行指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机可执行指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些处理器可执行指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的处理器可读存储器中，使得存储在该处理器可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些处理器可执行指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (15)

  1. 一种定时器处理方法，其特征在于，应用于终端，包括：
    确定分组数据汇聚协议PDCP服务数据单元SDU组，其中，所述终端对所述PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度。
  2. 根据权利要求1所述的定时器处理方法，其特征在于，所述PDCP SDU组中的多个PDCP SDU用于传输同一数据帧的多个IP包。
  3. 根据权利要求1所述的定时器处理方法，其特征在于，所述PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间点相同，或不同PDCP SDU的PDCP丢弃定时器超时的时间间隔小于或等于PDCP丢弃定时器误差阈值。
  4. 根据权利要求2所述的定时器处理方法，其特征在于，所述确定PDCP SDU组，包括以下至少一种：
    在所述数据帧所属业务为周期性业务且一个业务周期仅有一个所述数据帧的情况下，确定所述PDCP SDU组包括同一业务周期内的所有PDCP SDU；
    在IP包携带有数据帧标签的情况下，确定所述PDCP SDU组包括用于传输携带相同数据帧标签的IP包的多个PDCP SDU；
    通过对PDCP SDU所传输的IP包进行深度包解析，确定所述PDCP SDU组包括用于传输同一数据帧的多个IP包的PDCP SDU；
    在PDCP SDU携带有组标识的情况下，确定所述PDCP SDU组包括组标识相同的多个PDCP SDU，其中，PDCP SDU中的组标识来自服务数据适配协议SDAP协议数据单元PDU。
  5. 根据权利要求1-4中任一项所述的定时器处理方法，其特征在于，所述PDCP SDU组中至少两个PDCP SDU到达PDCP层的时间点不同，所述终端对所述PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度，包括以下任一种：
    由网络设备为所述终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在所述PDCP SDU组中，所有PDCP SDU的PDCP丢弃定时器的时间起点为第一个PDCP SDU到达PDCP层的时间点，所有PDCP SDU的PDCP丢弃定时器超时的时间点为第一个PDCP SDU的PDCP丢弃定时器超时的时间点；或
    由网络设备为所述终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在所述PDCP SDU组中，根据各PDCP SDU到达PDCP层的时间点与第一个PDCP SDU到达PDCP层的时间点的差值，对所述网络设备配置的PDCP丢弃定时器的长度进行调整，得到各PDCP SDU的PDCP丢弃定时器的长度，其中，各PDCP SDU的PDCP丢弃定时器的时间起点为各PDCP SDU到达PDCP层的时间点；或
    由网络设备为所述终端预先配置的对应PDCP实体的多个长度不同的PDCP丢弃定时器，在所述PDCP SDU组中，根据各PDCP SDU到达PDCP层的先后顺序依次使用所述多个PDCP丢弃定时器中的其中一个。
  6. 一种定时器处理方法，其特征在于，应用于网络设备，包括：
    为终端配置对应PDCP实体的一个或多个PDCP丢弃定时器，和/或为所述终端配置对应PDCP实体的PDCP丢弃定时器误差阈值，其中，所述PDCP丢弃定时器误差 阈值用于约束PDCP实体的PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间间隔。
  7. 一种定时器处理装置，其特征在于，应用于终端，所述定时器处理装置包括存储器、收发机和处理器；
    所述存储器，用于存储计算机程序；
    所述收发机，用于在所述处理器的控制下收发数据；
    所述处理器，用于读取所述存储器中的计算机程序并执行如下操作：
    确定分组数据汇聚协议PDCP服务数据单元SDU组，其中，所述终端对所述PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度。
  8. 根据权利要求7所述的定时器处理装置，其特征在于，所述PDCP SDU组中的多个PDCP SDU用于传输同一数据帧的多个IP包。
  9. 根据权利要求7所述的定时器处理装置，其特征在于，所述PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间点相同，或不同PDCP SDU的PDCP丢弃定时器超时的时间间隔小于或等于PDCP丢弃定时器误差阈值。
  10. 根据权利要求8所述的定时器处理装置，其特征在于，所述处理器还执行以下至少一种操作：
    在所述数据帧所属业务为周期性业务且一个业务周期仅有一个所述数据帧的情况下，确定所述PDCP SDU组包括同一业务周期内的所有PDCP SDU；
    在IP包携带有数据帧标签的情况下，确定所述PDCP SDU组包括用于传输携带相同数据帧标签的IP包的多个PDCP SDU；
    通过对PDCP SDU所传输的IP包进行深度包解析，确定所述PDCP SDU组包括用于传输同一数据帧的多个IP包的PDCP SDU；
    在PDCP SDU携带有组标识的情况下，确定所述PDCP SDU组包括组标识相同的多个PDCP SDU，其中，PDCP SDU中的组标识来自服务数据适配协议SDAP协议数据单元PDU。
  11. 根据权利要求7-10中任一项所述的定时器处理装置，其特征在于，所述终端对所述PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度，包括以下至少一种：
    由网络设备为所述终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，所述PDCP SDU组中所有PDCP SDU的PDCP丢弃定时器的时间起点为第一个PDCP SDU到达PDCP层的时间点；
    由网络设备为所述终端预先配置的对应PDCP实体的一个PDCP丢弃定时器，在所述PDCP SDU组中，根据各PDCP SDU到达PDCP层的时间点与第一个PDCP SDU到达PDCP层的时间点的差值，对所述PDCP丢弃定时器的长度进行调整，得到各PDCP SDU的PDCP丢弃定时器；
    由网络设备为所述终端预先配置的对应PDCP实体的多个PDCP丢弃定时器，在所述PDCP SDU组中，根据各PDCP SDU到达PDCP层的先后顺序依次使用所述多个PDCP丢弃定时器中的其中一个。
  12. 一种定时器处理装置，其特征在于，应用于网络设备，所述定时器处理装置 包括存储器、收发机和处理器；
    所述存储器，用于存储计算机程序；
    所述收发机，用于在所述处理器的控制下收发数据；
    所述处理器，用于读取所述存储器中的计算机程序并执行如下操作：
    为终端配置对应PDCP实体的一个或多个PDCP丢弃定时器，和/或为所述终端配置对应PDCP实体的PDCP丢弃定时器误差阈值，其中，所述PDCP丢弃定时器误差阈值用于约束PDCP实体的PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间间隔。
  13. 一种定时器处理装置，其特征在于，应用于终端，包括：
    处理单元，用于确定分组数据汇聚协议PDCP服务数据单元SDU组，其中，所述终端对所述PDCP SDU组中的多个PDCP SDU维护不同的PDCP丢弃定时器长度。
  14. 一种定时器处理装置，其特征在于，应用于网络设备，包括：
    配置单元，用于为终端配置对应PDCP实体的一个或多个PDCP丢弃定时器，和/或为所述终端配置对应PDCP实体的PDCP丢弃定时器误差阈值，其中，所述PDCP丢弃定时器误差阈值用于约束PDCP实体的PDCP SDU组中不同PDCP SDU的PDCP丢弃定时器超时的时间间隔。
  15. 一种处理器可读存储介质，其特征在于，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行权利要求1至6中任一项所述的定时器处理方法。
PCT/CN2022/113771 2021-09-16 2022-08-19 定时器处理方法、装置及存储介质 WO2023040586A1 (zh)

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