WO2022083364A1 - 状态参量处理方法及装置、网络设备 - Google Patents

状态参量处理方法及装置、网络设备 Download PDF

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Publication number
WO2022083364A1
WO2022083364A1 PCT/CN2021/118405 CN2021118405W WO2022083364A1 WO 2022083364 A1 WO2022083364 A1 WO 2022083364A1 CN 2021118405 W CN2021118405 W CN 2021118405W WO 2022083364 A1 WO2022083364 A1 WO 2022083364A1
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Prior art keywords
state parameter
data stream
target
sequence number
data
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PCT/CN2021/118405
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English (en)
French (fr)
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周叶
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大唐移动通信设备有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H04W36/00692—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present disclosure relates to the technical field of mobile communications, and in particular, to a state parameter processing method and apparatus, and network equipment.
  • PTM Point to Multipoint
  • PTP Point to Point
  • a cell can dynamically adjust the air interface transmission parameters according to the channel quality between the base station and the unicast receiving terminal, such as adjusting the modulation and coding strategy (Modulation and Coding Scheme, MCS), beam direction, in order to improve the efficiency of spectrum utilization .
  • MCS Modulation and Coding Scheme
  • the signal transmission of the base station needs to cover all UEs within the cell range as much as possible, even including UEs whose location and channel quality are not known to the network, such as those not in Radio Resource Control (RRC) the UE.
  • RRC Radio Resource Control
  • the network side often has to adopt relatively conservative air interface transmission parameters, such as MCS with lower code rate and omnidirectional transmission, so as to use more air interface resources to transmit less information.
  • Multicast is applicable to various scenarios, including services such as live streaming of video platforms that have stricter latency requirements and looser reliability requirements, and services that have looser latency requirements and stricter reliability requirements.
  • the sender hopes that every UE that receives the service can receive all the data in the service in sequence without repetition as much as possible.
  • the wireless communication system adopts a bearer mechanism to set a bearer count value for each data packet transmitted through the air interface.
  • the bearer count value starts from 0 and accumulates one by one.
  • the UE can perform a data continuity operation according to the count value on each data packet in a bearer.
  • the continuity operation includes sorting the data packets, detecting whether they are duplicated or missing, and so on.
  • the bearer is independently determined by the 5G access network node how to establish it. Specifically, when the 5G core network sends data to the 5G access network, it marks which data stream and which service session the data packet belongs to; and the 5G access network node can independently decide to send one or more data packets belonging to the same service session. Multiple data streams are included in the same bearer for air interface transmission.
  • 5G NR 5th Generation New Radio
  • the time points at which multiple 5G access network nodes start PTM transmission may be different.
  • the bearer count values for data packets with the same content are different between different 5G access network nodes, so that when the UE moves between these nodes, data continuity cannot be performed according to the bearer count values on the data packets. operation, the service quality requirements of the business cannot be met.
  • Embodiments of the present disclosure provide a state parameter processing method and apparatus, and network equipment to solve the problem that in the prior art, in the PTM transmission mechanism, when the same data packet is transmitted between different access network nodes, the corresponding bearer count values may be different The problem.
  • an embodiment of the present disclosure provides a state parameter processing method, which is applied to an access network element, including:
  • the first state parameter includes a data stream identifier and a first sequence number
  • the first sequence number is the core network network The sequence number corresponding to the transmission order in which the element transmits the first data packet via the target transmission interface
  • a second state parameter of the target data stream corresponding to the data stream identifier is generated; the second state parameter indicates the count value of the data packets of the target data stream transmitted by the core network element ;
  • a third state parameter of the target radio bearer corresponding to the target data stream is updated; the third state parameter indicates the count value of the data packets carried by the target radio bearer.
  • the method includes:
  • the second data packet When the second data packet is sent through the air interface bearer, it carries a second sequence number; the second sequence number is determined by the third state parameter corresponding to the air interface bearer.
  • generating the second state parameter of the target data stream corresponding to the data stream identifier according to the first sequence number includes:
  • the first serial number is added by one, or the first serial number is added by one and then modulo the preset serial number threshold to obtain the second state parameter of the target data stream corresponding to the data stream identifier.
  • the acquiring the first state parameter carried in the target information includes:
  • Obtain the data stream identifier and the initial first sequence number carried in the target information use the data stream identifier as the data stream identifier of the first state parameter, and use the initial first sequence number as the data stream identifier of the first state parameter the first sequence number of the first state parameter, or
  • Obtain the data stream identifier and the fourth sequence number carried in the target information use the data stream identifier as the data stream identifier of the first state parameter, and use the fourth sequence number and the third state parameter as the data stream identifier.
  • the first sequence number of the first state parameter is generated.
  • the target information includes the first data packet or synchronization information.
  • the updating the third state parameter of the target radio bearer corresponding to the target data stream includes:
  • the second state parameter corresponding to the data stream carried by the target radio bearer is summed to obtain the third state parameter of the target radio bearer.
  • an embodiment of the present disclosure further provides a state parameter processing method, which is applied to a core network element, including:
  • Target information carries the first state parameter of the first data packet, so that the access network element generates a target data stream corresponding to the data stream identifier according to the first sequence number and update the third state parameter of the target radio bearer corresponding to the target data stream;
  • the first state parameter includes the data stream identifier corresponding to the first data packet and the first sequence number; the first sequence number is the first data packet transmitted by the core network element via the target transmission interface The serial number corresponding to the transmission order of ;
  • the second state parameter indicates the count value of the data packets of the target data flow transmitted by the core network element; the third state parameter indicates the number of data packets carried by the target radio bearer.
  • the target information includes the first data packet or synchronization information.
  • an embodiment of the present disclosure further provides a network device, including a memory, a transceiver, and a processor:
  • a memory for storing a computer program
  • a transceiver for sending and receiving data under the control of the processor
  • a processor for reading the computer program in the memory and performing the following operations:
  • the first state parameter includes a data stream identifier and a first sequence number
  • the first sequence number is the core network network The sequence number corresponding to the transmission order in which the element transmits the first data packet via the target transmission interface
  • a second state parameter of the target data stream corresponding to the data stream identifier is generated; the second state parameter indicates the count value of the data packets of the target data stream transmitted by the core network element ;
  • a third state parameter of the target radio bearer corresponding to the target data stream is updated; the third state parameter indicates the count value of the data packets carried by the target radio bearer.
  • the processor is used to:
  • a second sequence number is carried; the second sequence number is determined by the third state parameter corresponding to the air interface bearer.
  • generating the second state parameter of the target data stream corresponding to the data stream identifier according to the first sequence number includes:
  • the first serial number is added by one, or the first serial number is added by one and then modulo the preset serial number threshold to obtain the second state parameter of the target data stream corresponding to the data stream identifier.
  • the acquiring the first state parameter carried in the target information includes:
  • Obtain the data stream identifier and the initial first sequence number carried in the target information use the data stream identifier as the data stream identifier of the first state parameter, and use the initial first sequence number as the data stream identifier of the first state parameter the first sequence number of the first state parameter, or
  • Obtain the data stream identifier and the fourth sequence number carried in the target information use the data stream identifier as the data stream identifier of the first state parameter, and use the fourth sequence number and the third state parameter as the data stream identifier.
  • the first sequence number of the first state parameter is generated.
  • the target information includes the first data packet or synchronization information.
  • the updating the third state parameter of the target radio bearer corresponding to the target data stream includes:
  • the second state parameter corresponding to the data stream carried by the target radio bearer is summed to obtain the third state parameter of the target radio bearer.
  • an embodiment of the present disclosure further provides a network device, including a memory, a transceiver, and a processor:
  • a memory for storing a computer program
  • a transceiver for sending and receiving data under the control of the processor
  • a processor for reading the computer program in the memory and performing the following operations:
  • Target information carries the first state parameter of the first data packet, so that the access network element generates a target data stream corresponding to the data stream identifier according to the first sequence number and update the third state parameter of the target radio bearer corresponding to the target data stream;
  • the first state parameter includes the data stream identifier corresponding to the first data packet and the first sequence number; the first sequence number is the first data packet transmitted by the core network element via the target transmission interface The serial number corresponding to the transmission order of ;
  • the second state parameter indicates the count value of the data packets of the target data flow transmitted by the core network element; the third state parameter indicates the number of data packets carried by the target radio bearer.
  • the target information includes the first data packet or synchronization information.
  • an embodiment of the present disclosure further provides a state parameter processing apparatus, which is applied to an access network element, including:
  • an information receiving module configured to receive target information sent by a core network element, and obtain a first state parameter included in the target information;
  • the first state parameter includes a data stream identifier and a first sequence number;
  • the first sequence number a sequence number corresponding to the transmission order in which the core network element transmits the first data packet via the target transmission interface;
  • a parameter generation module configured to generate a second state parameter of the target data stream corresponding to the data stream identifier according to the first sequence number; the second state parameter indicates the target data stream transmitted by the core network element The count value of the data packet;
  • a parameter updating module configured to update the third state parameter of the target radio bearer corresponding to the target data flow; the third state parameter indicates the count value of the data packets carried by the target radio bearer.
  • the embodiments of the present disclosure further provide a state parameter processing apparatus, the state parameter processing apparatus, which is applied to a core network element, including:
  • an information sending module configured to send target information to an access network element, where the target information carries the first state parameter of the first data packet, so that the access network element generates a data stream according to the first sequence number identifying the second state parameter of the corresponding target data stream, and updating the third state parameter of the target radio bearer corresponding to the target data stream;
  • the first state parameter includes a data stream identifier corresponding to the first data packet and a first sequence number; the first sequence number is the transmission of the first data packet transmitted by the core network element via the target transmission interface The sequence number corresponding to the order;
  • the second state parameter indicates the count value of the data packets of the target data flow transmitted by the core network element; the third state parameter indicates the number of data packets carried by the target radio bearer.
  • an embodiment of the present disclosure further provides an electronic device, the electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the computer program when the processor executes the computer program. as in the above method.
  • an embodiment of the present disclosure further provides a processor-readable storage medium, where a computer program is stored on the processor-readable storage medium, and when the computer program is executed by a processor, the steps in the above method are implemented.
  • an embodiment of the present disclosure provides a computer program, including computer-readable code, which, when the computer-readable code is executed on a computing and processing device, causes the computing and processing device to execute the method described in the first aspect above. method, or perform the method according to the second aspect above.
  • an embodiment of the present disclosure provides a computer-readable medium, in which the computer program described in the ninth aspect is stored.
  • the target information sent by the core network element is received, and the first state parameter included in the target information is obtained; and the second state of the target data stream corresponding to the data stream identifier is generated according to the first sequence number. parameter, and update the third state parameter of the target radio bearer corresponding to the target data flow, so that when the same data packet is transmitted between different access network elements, the corresponding bearer count value is the same, so as to ensure that the UE is in different access network. Service continuity during switchover of incoming network elements.
  • FIG. 1 is one of the flowcharts of a state parameter processing method provided by an embodiment of the present disclosure
  • FIG. 2 is the second flow chart of a state parameter processing method provided by an embodiment of the present disclosure
  • FIG. 3 is one of the structural block diagrams of a state parameter processing apparatus provided by an embodiment of the present disclosure
  • FIG. 4 is the second structural block diagram of a state parameter processing apparatus provided by an embodiment of the present disclosure.
  • FIG. 5 is one of the structural block diagrams of network equipment provided by an embodiment of the present disclosure.
  • FIG. 6 is the second structural block diagram of a network device provided by an embodiment of the present disclosure.
  • Figure 7 schematically shows a block diagram of a computing processing device for performing methods according to the present disclosure.
  • Figure 8 schematically shows a memory unit for holding or carrying program code implementing the method according to the present disclosure.
  • the term "and/or" describes the association relationship of associated objects, and indicates that there can be three kinds of relationships. For example, A and/or B can indicate that A exists alone, A and B exist at the same time, and B exists alone these three situations.
  • the character “/” generally indicates that the associated objects are an "or" relationship.
  • the term “plurality” refers to two or more than two, and other quantifiers are similar.
  • the embodiments of the present disclosure provide a state parameter processing method and device, and network equipment, to solve the problem that in the prior art, in the PTM transmission mechanism, when the same data packet is transmitted between different access network nodes, the corresponding bearer count value may be different questions.
  • the method and the device are conceived based on the same application. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and repeated descriptions will not be repeated here.
  • 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 (Wideband Code Division Multiple Access, WCDMA) general packet Wireless service (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 telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G New Radio (New Radio, NR) system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband Code Division Multiple Access
  • general packet Wireless service general packet Radio service
  • GPRS general packet Wireless service
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • time division duplex time division duplex
  • TDD Time division duplex
  • the terminal device 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 device connected to a wireless modem.
  • the name of the terminal device may be different.
  • the terminal device may be called user equipment (User Equipment, UE).
  • Wireless terminal equipment can communicate with one or more core networks (Core Network, CN) via a radio access network (Radio Access Network, RAN).
  • RAN Radio Access Network
  • "telephone) and computers with mobile terminal equipment eg portable, pocket-sized, hand-held, computer-built or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network.
  • Wireless terminal equipment may also be referred to as system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which 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 a plurality of cells providing services for the terminal.
  • the base station may also be called an access point, or may be a device in the access network that communicates with wireless terminal equipment through one or more sectors on the air interface, or other names.
  • the network device can be used to exchange received air frames with Internet Protocol (IP) packets, and act as a router between the wireless terminal device and the rest of the access network, which can include the Internet. Protocol (IP) communication network.
  • IP Internet Protocol
  • the network devices may also coordinate attribute management for the air interface.
  • the network device involved in the embodiments of the present disclosure may be a network device (Base Transceiver Station, BTS) in the 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 (LTE) system (evolutional Node B, eNB or e-NodeB), 5G base station (gNB) in 5G network architecture (next generation system), or Home evolved Node B (HeNB), relay node (relay node) , a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiments of the present disclosure.
  • a network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.
  • MIMO transmission can be single-user MIMO (Single User MIMO, SU-MIMO) or multi-user MIMO. (Multiple User MIMO, MU-MIMO). According to the form and number of root antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or diversity transmission, precoding transmission, or beamforming transmission.
  • handover refers to the operation of changing the transmission path in the communication network for a service.
  • the handover process that involves changing the network element where the Packet Data Convergence Protocol (PDCP) is located (that is, it was originally transmitted through one PDCP network element, but changed to another PDCP network element at a certain time), in order to improve the use of PTP
  • the continuity of downlink services sent in the form of transmission even meets the requirements of lossless and sequential delivery.
  • the source PDCP network element of the handover will provide the target PDCP network element of the handover with the data it has received from the core network but has not yet been delivered to the UE. This mechanism Called "Data For Warding".
  • the mapping of service flows on the source PDCP network element side and the target PDCP network element side to the radio bearer is the same, and data forwarding can be performed according to the granularity of the radio bearer, and each data packet contains a sequence number.
  • the source PDCP network element side also provides a transmission status summary of the source PDCP network element to the target PDCP network element side, wherein the PDCP count value indicates which PDCP data packets have been successfully received by the UE through the air interface.
  • the UPF will send an end marker (End Marker) to the source transmission path for each session, and all subsequent data will be sent through the new transmission path.
  • End Marker End Marker
  • the source PDCP network element side When the source PDCP network element side receives the end identifier sent by the UPF, it knows that the session is no longer transmitted through the N3 channel on the source side, and the previously received data packet is the last data packet transmitted through the channel. Thereafter, for each radio bearer, when all the data to be forwarded on the radio bearer have been sent to the target PDCP network element side, the source PDCP network element side will send an end identifier. When the target PDCP receives the end identifier for the radio bearer, it learns that the data forwarding for the radio bearer has ended.
  • SDAP Service Data Adaptation Protocol
  • an embodiment of the present disclosure provides a state parameter processing method, as shown in FIG. 1 , the method is applied to an access network network element, the method includes:
  • Step 101 Receive target information sent by a core network element, and obtain a first state parameter included in the target information; the first state parameter includes a data stream identifier and a first sequence number; the first sequence number is the The core network element transmits the sequence number corresponding to the transmission order of the first data packet via the target transmission interface.
  • the access network elements such as PDCP network elements or radio link control layer (Radio Link Control, RLC) network elements; core network elements such as user plane function (User Plane Function, UPF) network elements, access and mobility A management function (Access and Mobility Management Function, AMF) network element or a session management function (Session Management Function, SMF) network element.
  • UPF User Plane Function
  • AMF Access and Mobility Management Function
  • SMF Session Management Function
  • the AMF network element is a relatively core module in the network, and each UE is only connected to one AMF at the same time.
  • the AMF network element communicates with the SMF network element through the Nsmf interface, such as requesting the SMF to establish, modify, and release a service context.
  • the service data is managed by the SMF network element in the form of sessions according to service attributes, IP routing of the backbone network and other parameters, and each session is managed by only one SMF.
  • QoS Quality of Service
  • the SMF network element manages the UPF network element through the N4 interface, such as requesting the UPF to establish, modify, and release the transmission channel of service data.
  • the access network element When receiving the target information sent by the core network element, the access network element obtains the first state parameter included in the target information; the first state parameter includes a data stream identifier and a first sequence number.
  • the data stream identifier is the identifier of the data stream to which the currently transmitted service data packet belongs; for example, when the UPF network element sends the service data that can be transmitted through the air interface by using the PTM method through the N3 interface, for each data stream , set a state variable Tx_NEXT_i_UPF, where i identifies the identifier of the data stream.
  • Tx_NEXT_i_UPF a state variable
  • i identifies the identifier of the data stream.
  • the initial value of this state variable is 0, but it can also be other values.
  • the first sequence number is the sequence number corresponding to the transmission order in which the core network element transmits the first data packet via the target transmission interface;
  • the target transmission interface is, for example, the N3 interface, under normal circumstances, the UPF network element northbound communicates with the outside world through the N6 interface.
  • the data network (for example, the backbone network) of the network exchanges service data, and the southbound exchanges service data with network elements of the access network through the N3 interface.
  • the access network is a 5G wireless access network
  • the N3 interface is also called the NG-U interface, that is, the user plane part of the NG interface.
  • the UPF network element When the UPF network element sends the first data packet belonging to the data stream i through the N3 interface, it first adds a first sequence number (Sequence Number) to the data packet header of the first data packet, which is represented by Tx_NEXT_N3_i_UPF.
  • a first sequence number Sequence Number
  • Tx_NEXT_N3_i_UPF the serial number of the interface
  • the first sequence number is sent to the SDAP layer of the access network device (eg gNB).
  • the SDAP layer maps the first data packet to the corresponding radio bearer according to the data flow identifier in the data packet and the preset mapping relationship, and sends the first data packet to the PDCP layer of the gNB together with the first sequence number therein.
  • Step 102 according to the first sequence number, generate a second state parameter of the target data flow corresponding to the data flow identifier; the second state parameter indicates the data packet of the target data flow transmitted by the core network element count value.
  • the access network element further processes the first sequence number to obtain a second state parameter; the second state parameter indicates the count value of the data packets of the target data flow transmitted by the core network element, such as target data The count value of the packets of flow i.
  • the second state parameter is represented by Rx_NEXT_N3_i_PDCP_j, where j represents the identifier of the PDCP; the second state parameter can be obtained by adding 1 to the first sequence number, and the second state parameter represents the next one of the currently transmitted first data packet.
  • the sequence number of the N3 data packet; the first sequence number plus 1 can also be modulo the preset sequence number upper limit plus 1 as the first sequence number; optionally, the preset sequence number upper limit plus 1 is represented by rangeN3SN, which takes The value can be 2 24 .
  • Step 103 Update the third state parameter of the target radio bearer corresponding to the target data flow; the third state parameter indicates the count value of the data packets carried by the target radio bearer.
  • the access network element generates a PDCP data packet belonging to the target (for example, radio bearer k) according to the second state parameter, sets the count value of the PDCP data packet as the third state parameter (Tx_NEXT_Uu_k_PDCP_j), and performs subsequent processing, For example, the lowest bits (preset data bits) of the count value are truncated as the third state parameter and submitted to the lower protocol layer.
  • the target for example, radio bearer k
  • the access network element updates the third state parameter;
  • the third state parameter represents the count value of all data flows mapped to the radio bearer k, that is, the number of data packets mapped to the target radio bearer Carry out the summation, that is, the PDCP count value of the target radio bearer; optionally, the PDCP count value is usually provided with a maximum threshold, for example, the maximum threshold value is 2 32 ; if the third state parameter is greater than or equal to the maximum threshold, then PDCP count The lowest bits of the value (preset data bits) are truncated as the third state parameter.
  • the value of the third state parameter is always: The second state parameter. Since the order in which different access network elements receive data packets through the N3 interface is the same, when they process any data packet, their respective "previous data packets of each data flow" are all the same. Therefore, it can be ensured that as long as the mapping relationship between the data flow and the data bearer is the same between different access network elements, the third state parameter calculated for the same service data is also the same; and the access network elements are carried through the air interface.
  • the sequence number of the sent data packet will be determined according to the third state parameter, that is, the sequence number of the data packet received by the UE is determined according to the third state parameter; in this way, if the UE When switching between different access network elements, such as switching from gNB1 to gNB2, since the third state parameter calculated by gNB1 and gNB2 for the same piece of service data is also the same, the sequence numbers sent by the two to the UE are also the same. That is, the sequence numbers of the data packets received by the UE under different access network elements are consistent, thereby ensuring service continuity when the UE moves between gNBs.
  • the target information sent by the core network element is received, and the first state parameter included in the target information is obtained; according to the first sequence number, the second state parameter of the target data flow corresponding to the data flow identifier is generated. , and update the third state parameter of the target radio bearer corresponding to the target data flow, so that when the same data packet is transmitted between different access network elements, the corresponding bearer count value is the same, so as to ensure that the UE accesses Service continuity during network element handover.
  • the embodiments of the present disclosure solve the problem that the corresponding bearer count values may be different when the same data packet is transmitted between different access network nodes in the PTM transmission mechanism in the prior art.
  • the method includes:
  • the second sequence number is carried; the second sequence number is determined by the third state parameter corresponding to the air interface bearer, for example, by intercepting the lowest bits of the third state parameter (pre- Set the number of data bits) as the second serial number.
  • the corresponding bearer counts are the same; if the UE switches between different access network elements, such as switching from gNB1 to gNB2, since gNB1 and gNB2 are for the same service
  • the third state parameter calculated by the data is also the same, and the sequence numbers sent by the two to the UE are also the same, that is, the sequence numbers of the data packets received by the UE under different access network elements are consistent, thereby ensuring that Service continuity when UE moves between gNBs.
  • the generating the second state parameter of the target data stream corresponding to the data stream identifier according to the first sequence number includes:
  • the first serial number is added by one, or the first serial number is added by one and then modulo the preset serial number threshold to obtain the second state parameter of the target data stream corresponding to the data stream identifier.
  • the second state parameter can be obtained by adding 1 to the first sequence number, and then the second state parameter represents the sequence number of the next N3 data packet of the first data packet currently transmitted; the first sequence number can also be added to 1 with the pre-defined sequence number.
  • the acquiring the first state parameter carried in the target information includes:
  • Obtain the data stream identifier and the initial first sequence number carried in the target information use the data stream identifier as the data stream identifier of the first state parameter, and use the initial first sequence number as the data stream identifier of the first state parameter the first sequence number of the first state parameter; or
  • Obtain the data stream identifier and the fourth sequence number carried in the target information use the data stream identifier as the data stream identifier of the first state parameter, and use the fourth sequence number and the third state parameter as the data stream identifier.
  • the first sequence number of the first state parameter is generated.
  • Some data bits of the original fourth serial number are truncated; for example, if the third state parameter is 5 data bits, and the fourth serial number is 3 data bits, it means that the fourth serial number is intercepted from the original fourth serial number The result of the lowest 3 bits of The state parameter, the fourth serial number lacks N data bits, then the first N data bits of the third state variable are added before the fourth serial number to restore the first serial number.
  • the UPF network element when the UPF network element sends downlink data, it still contains the N3 sequence number (the fourth sequence number), and when the gNB network element receives the data, it firstly uses the third sequence number corresponding to the N3 sequence number.
  • the state parameter determines the N3 count value, and then determines the first sequence number.
  • the target information includes the first data packet or synchronization information.
  • the UPF sends a synchronization message through the N3 interface, which includes the identifier of each data stream in the corresponding session, and the data stream for the data stream. first serial number.
  • the network element of the access network after receiving the synchronization information, the network element of the access network initializes the value of the second state parameter to the second state parameter calculated according to the first sequence number in the synchronization information according to the identifier of the data flow in the synchronization information.
  • the updating the third state parameter of the target radio bearer corresponding to the target data stream includes:
  • the count value that is, the summation of the number of data packets mapped to the target radio bearer, that is, the PDCP count value of the target radio bearer.
  • Table 1 shows some state parameters of the service session transmitted through the air interface by means of PTM. It contains three data streams, whose identifiers are R, G, and B, respectively. Both the gNB1 network element and the gNB2 network element map the data streams R and G to the radio bearer 1, and map the data stream B to the radio bearer 2.
  • gNB1 starts to receive data when UPF first starts to send data through N3 interface, while gNB2 starts to receive after UPF has transmitted 10 data packets.
  • Tx_NEXT_N3_R_UPF represents the first sequence number of the data stream R
  • Tx_NEXT_N3_G_UPF represents the first sequence number of the data stream G
  • Tx_NEXT_N3_B_UPF represents the first sequence number of data stream B
  • Rx_NEXT_N3_R_PDCP_1 represents the second state parameter of data stream R in PDCP1;
  • Rx_NEXT_N3_G_PDCP_1 represents the second state parameter of data stream G in PDCP1;
  • Rx_NEXT_N3_B_PDCP_1 represents the second state parameter of data stream B in PDCP1;
  • Tx_NEXT_Uu_1_PDCP_1 represents the third state parameter of radio bearer 1;
  • Tx_NEXT_Uu_2_PDCP_1 represents the third state parameter of radio bearer 2 .
  • the N3 interface transmits synchronization information, which indicates that the current first sequence number of each data stream is 0.
  • the network element gNB1 of the access network directly sets the second state parameter for each data flow to the value of the corresponding first sequence number, that is, 0; at the same time, gNB1 sets the third state parameter of the radio bearer 1 to the data flow
  • the sum of the second state parameter corresponding to R and the second state parameter corresponding to data stream G is 0, and the third state parameter of radio bearer 1 is set to the second state parameter corresponding to data stream B, that is, 0.
  • N3 transmits data packet No. 0 of data stream B.
  • the access network element gNB1 determines that the first sequence number of data stream B is 0, and adds 1 to the first sequence number to obtain the second state parameter 1. ; Simultaneously update the third state parameter of the radio bearer 2 to the value of the second state parameter of the data stream B, that is, 1.
  • N3 transmits the data packet No. 0 of the data stream G.
  • the access network element gNB1 determines that the first sequence number of the data stream G is 0, and adds 1 to the first sequence number to obtain the second state parameter 1. ; simultaneously update the third state parameter of the radio bearer 1 to be the sum of the second state parameter of the data stream R and the second state parameter of the data stream G, that is, 1;
  • N3 transmits data packet No. 1 of data stream B.
  • the access network element gNB1 determines that the first sequence number of data stream G is 1, and adds 1 to the first sequence number to obtain the second state parameter 2 ; simultaneously update the third state parameter of radio bearer 2 to the value of the second state parameter of data stream B, that is, 2;
  • the third state parameter calculated in the same way as above is the same, so the sequence numbers of the data packets sent by gNB1 and gNB2 to the UE are also the same, and the UE is under different gNB network elements.
  • the sequence numbers of the received data packets are consistent, thereby ensuring service continuity when the UE moves between gNBs.
  • the target information sent by the core network element is received, and the first state parameter included in the target information is obtained; according to the first sequence number, the second state parameter of the target data flow corresponding to the data flow identifier is generated. , and update the third state parameter of the target radio bearer corresponding to the target data flow, so that when the same data packet is transmitted between different access network elements, the corresponding bearer count value is the same, so as to ensure that the UE accesses Service continuity during network element handover.
  • an embodiment of the present disclosure provides a state parameter processing method, the method is applied to a core network element, and the method includes:
  • Step 201 Send target information to an access network element, where the target information carries a first state parameter of a first data packet, so that the access network element generates a data flow identifier corresponding to the first sequence number. the second state parameter of the target data stream, and update the third state parameter of the target radio bearer corresponding to the target data stream.
  • the network elements of the access network are, for example, PDCP network elements or RLC network elements; core network network elements UPF network elements, AMF network elements or SMF network elements.
  • the access network element is the PDCP network element
  • the core network element is the UPF network element. network element) is similar to the embodiment of the present disclosure, and details are not repeated here.
  • the AMF network element is a relatively core module in the network, and each UE is only connected to one AMF at the same time.
  • the AMF network element communicates with the SMF network element through the Nsmf interface, such as requesting the SMF to establish, modify, and release a service context.
  • the service data is managed by the SMF network element in the form of sessions according to service attributes, IP routing of the backbone network and other parameters, and each session is managed by only one SMF.
  • QoS Quality of Service
  • the SMF network element manages the UPF network element through the N4 interface, such as requesting the UPF to establish, modify, and release the transmission channel of service data.
  • the access network element When receiving the target information sent by the core network element, the access network element obtains the first state parameter included in the target information; the first state parameter includes a data stream identifier and a first sequence number.
  • the data stream identifier is the identifier of the data stream to which the currently transmitted service data packet belongs; for example, when the UPF network element sends the service data that can be transmitted through the air interface by using the PTM method through the N3 interface, for each data stream , set a state variable Tx_NEXT_i_UPF, where i identifies the identifier of the data stream.
  • Tx_NEXT_i_UPF a state variable
  • i identifies the identifier of the data stream.
  • the initial value of this state variable is 0, but it can also be other values.
  • the first state parameter includes the data stream identifier corresponding to the first data packet and the first sequence number; the first sequence number is the first data packet transmitted by the core network element via the target transmission interface
  • the serial number corresponding to the transmission order of the NE; the target transmission interface is such as the N3 interface.
  • the UPF network element exchanges service data with the external data network (such as the backbone network) through the N6 interface in the north direction, and communicates with the access network through the N3 interface in the south direction. Meta interactive business data.
  • the access network is a 5G wireless access network
  • the N3 interface is also called the NG-U interface, that is, the user plane part of the NG interface.
  • the second state parameter indicates the count value of the data packets of the target data flow transmitted by the core network element; the third state parameter indicates the number of data packets carried by the target radio bearer.
  • the access network element further processes the first sequence number to obtain a second state parameter; the second state parameter indicates the count value of the data packets of the target data flow transmitted by the core network element, such as target data The count value of the packets of flow i.
  • the access network element generates a PDCP data packet belonging to the target (for example, radio bearer k) according to the second state parameter, sets the count value of the PDCP data packet as the third state parameter (Tx_NEXT_Uu_k_PDCP_j), and performs subsequent processing, For example, the lowest bits (preset data bits) of the count value are truncated as the third state parameter and submitted to the lower protocol layer.
  • the target for example, radio bearer k
  • the access network element updates the third state parameter;
  • the third state parameter represents the count value of all data flows mapped to the radio bearer k, that is, the number of data packets mapped to the target radio bearer Carry out the summation, that is, the PDCP count value of the target radio bearer; optionally, the PDCP count value is usually provided with a maximum threshold, for example, the maximum threshold value is 2 32 ; if the third state parameter is greater than the third state parameter, then the PDCP count value is The lowest number of bits (preset data bits) of is truncated as the third state parameter.
  • the value of the third state parameter is always: The second state parameter. Since the order in which different access network elements receive data packets through the N3 interface is the same, when they process any data packet, their respective "previous data packets of each data flow" are all the same. Therefore, it can be ensured that as long as the mapping relationship between the data flow and the data bearer is the same between different access network elements, the third state parameter calculated for the same service data is also the same; and the access network elements are carried through the air interface.
  • the sequence number of the sent data packet will be determined according to the third state parameter, that is, the sequence number of the data packet received by the UE is determined according to the third state parameter; in this way, if the UE When switching between different access network elements, such as switching from gNB1 to gNB2, since the third state parameter calculated by gNB1 and gNB2 for the same piece of service data is also the same, the sequence numbers sent by the two to the UE are also the same. That is, the sequence numbers of the data packets received by the UE under different access network elements are consistent, thereby ensuring service continuity when the UE moves between gNBs.
  • the target information includes the first data packet or synchronization information.
  • the UPF sends a synchronization message through the N3 interface, which includes the identifier of each data stream in the corresponding session, and the data stream for the data stream. first serial number.
  • the access network element after receiving the synchronization information, the access network element initializes the value of the second state parameter to the second state parameter calculated according to the first sequence number in the synchronization information according to the identifier of the data flow in the synchronization information.
  • target information is sent to an access network element, and the target information carries a first state parameter of a first data packet, so that the access network element generates a data stream according to the first sequence number. Identify the second state parameter of the corresponding target data stream, and update the third state parameter of the target radio bearer corresponding to the target data stream, so that when the same data packet is transmitted between different access network elements, the corresponding bearer The count values are the same to ensure the service continuity of the UE when switching between different access network elements.
  • the embodiments of the present disclosure solve the problem that the corresponding bearer count values may be different when the same data packet is transmitted between different access network nodes in the PTM transmission mechanism in the prior art.
  • an embodiment of the present disclosure further provides a state parameter processing apparatus, which is applied to an access network element, including:
  • An information receiving module 301 is configured to receive target information sent by a core network element, and obtain a first state parameter included in the target information; the first state parameter includes a data stream identifier and a first sequence number; the first sequence The number is the sequence number corresponding to the transmission order in which the core network element transmits the first data packet via the target transmission interface.
  • the network elements of the access network are, for example, PDCP network elements or RLC network elements; core network network elements UPF network elements, AMF network elements or SMF network elements.
  • the access network element is the PDCP network element
  • the core network element is the UPF network element. network element) is similar to the embodiment of the present disclosure, and details are not repeated here.
  • the AMF network element is a relatively core module in the network, and each UE is only connected to one AMF at the same time.
  • the AMF network element communicates with the SMF network element through the Nsmf interface, such as requesting the SMF to establish, modify, and release a service context.
  • the service data is managed by the SMF network element in the form of sessions according to service attributes, IP routing of the backbone network and other parameters, and each session is managed by only one SMF. In each session, according to the QoS requirements of different service data, it can be divided into one or more service data streams, and a data stream identifier can be set for each service data stream.
  • the SMF network element manages the UPF network element through the N4 interface, such as requesting the UPF to establish, modify, and release the transmission channel of service data.
  • the access network element When receiving the target information sent by the core network element, the access network element obtains the first state parameter included in the target information; the first state parameter includes a data stream identifier and a first sequence number.
  • the data stream identifier is the identifier of the data stream to which the currently transmitted service data packet belongs; , set a state variable Tx_NEXT_i_UPF, where i identifies the identifier of the data stream.
  • Tx_NEXT_i_UPF the initial value of this state variable is 0, but it can also be other values.
  • the first sequence number is the sequence number corresponding to the transmission order in which the core network element transmits the first data packet via the target transmission interface;
  • the target transmission interface is, for example, the N3 interface, under normal circumstances, the UPF network element northbound communicates with the outside world through the N6 interface.
  • the data network (for example, the backbone network) of the network exchanges service data, and the southbound exchanges service data with network elements of the access network through the N3 interface.
  • the access network is a 5G wireless access network
  • the N3 interface is also called the NG-U interface, that is, the user plane part of the NG interface.
  • the UPF network element When the UPF network element sends the first data packet belonging to the data flow i through the N3 interface, it first adds a first sequence number to the data packet header of the first data packet, which is represented by Tx_NEXT_N3_i_UPF. By adding the serial number of the interface, the N3 channel helps all data packets in the session to be transmitted in a lossless and orderly manner.
  • the first sequence number is sent to the SDAP layer of the access network device (eg gNB).
  • the SDAP layer maps the first data packet to the corresponding radio bearer according to the data flow identifier in the data packet and the preset mapping relationship, and sends the first data packet to the PDCP layer of the gNB together with the first sequence number therein.
  • a parameter generation module 302 configured to generate a second state parameter of the target data stream corresponding to the data stream identifier according to the first sequence number; the second state parameter indicates the target data transmitted by the core network element The count value of the flow's packets.
  • the access network element further processes the first sequence number to obtain a second state parameter; the second state parameter indicates the count value of the data packets of the target data flow transmitted by the core network element, such as target data The count value of the packets of flow i.
  • the second state parameter is represented by Rx_NEXT_N3_i_PDCP_j, where j represents the identifier of the PDCP; the second state parameter can be obtained by adding 1 to the first sequence number, and the second state parameter represents the next one of the currently transmitted first data packet.
  • the sequence number of the N3 data packet; the first sequence number plus 1 can also be modulo the preset sequence number upper limit plus 1 as the first sequence number; optionally, the preset sequence number upper limit plus 1 is represented by rangeN3SN, which takes The value can be 2 24 .
  • a parameter updating module 303 configured to update a third state parameter of a target radio bearer corresponding to the target data stream; the third state parameter indicates a count value of data packets carried by the target radio bearer.
  • the access network element generates a PDCP data packet belonging to the target (for example, radio bearer k) according to the second state parameter, sets the count value of the PDCP data packet as the third state parameter (Tx_NEXT_Uu_k_PDCP_j), and performs subsequent processing, For example, the lowest bits (preset data bits) of the count value are truncated as the third state parameter and submitted to the lower protocol layer.
  • the target for example, radio bearer k
  • the access network element updates the third state parameter;
  • the third state parameter represents the count value of all data flows mapped to the radio bearer k, that is, the number of data packets mapped to the target radio bearer Carry out the summation, that is, the PDCP count value of the target radio bearer; optionally, the PDCP count value is usually provided with a maximum threshold, for example, the maximum threshold value is 2 32 ; if the third state parameter is greater than the third state parameter, then the PDCP count value is The lowest number of bits (preset data bits) of is truncated as the third state parameter.
  • the value of the third state parameter is always: The second state parameter. Since the order in which different access network elements receive data packets through the N3 interface is the same, when they process any data packet, their respective "previous data packets of each data flow" are all the same. Therefore, it can be ensured that as long as the mapping relationship between the data flow and the data bearer is the same between different access network elements, the third state parameter calculated for the same service data is also the same; and the access network elements are carried through the air interface.
  • the sequence number of the sent data packet will be determined according to the third state parameter, that is, the sequence number of the data packet received by the UE is determined according to the third state parameter; in this way, if the UE When switching between different access network elements, such as switching from gNB1 to gNB2, since the third state parameter calculated by gNB1 and gNB2 for the same piece of service data is also the same, the sequence numbers sent by the two to the UE are also the same. That is, the sequence numbers of the data packets received by the UE under different access network elements are consistent, thereby ensuring service continuity when the UE moves between gNBs.
  • the method includes:
  • a second sequence number is carried; the second sequence number is determined by the third state parameter corresponding to the air interface bearer.
  • the parameter generation module 302 includes:
  • a first processing submodule configured to use the first sequence number as the second state parameter of the target data stream corresponding to the data stream identifier
  • the second processing sub-module is configured to add one to the first serial number, or add one to the first serial number and modulo the preset serial number threshold to obtain the target corresponding to the data stream identifier.
  • the second state parameter of the data stream is configured to add one to the first serial number, or add one to the first serial number and modulo the preset serial number threshold to obtain the target corresponding to the data stream identifier.
  • the information receiving module 301 includes:
  • the first acquisition sub-module is used to acquire the data stream identifier and the initial first sequence number carried in the target information, use the data stream identifier as the data stream identifier of the first state parameter, and use the data stream identifier as the first state parameter. an initial first sequence number as the first sequence number of the first state parameter, or
  • the second acquisition sub-module is configured to acquire the data stream identifier and the fourth sequence number carried in the target information, use the data stream identifier as the data stream identifier of the first state parameter, and obtain the data stream identifier according to the first state parameter.
  • the fourth sequence number and the third state parameter generate the first sequence number of the first state parameter.
  • the target information includes the first data packet or synchronization information.
  • the parameter update module 303 includes:
  • a determination submodule configured to determine a target radio bearer corresponding to the target data stream
  • the summation submodule is configured to perform summation processing on the second state parameters corresponding to the data stream carried by the target radio bearer to obtain the third state parameter of the target radio bearer.
  • the information receiving module 301 receives the target information sent by the core network element, and obtains the first state parameter included in the target information; the parameter generating module 302 generates the corresponding data flow identifier according to the first serial number.
  • the count values are the same to ensure the service continuity of the UE when switching between different access network elements.
  • an embodiment of the present disclosure further provides a state parameter processing apparatus, which is applied to a core network element, including:
  • An information sending module 401 configured to send target information to an access network element, where the target information carries a first state parameter of a first data packet, so that the access network element generates data according to the first sequence number
  • the flow identifier corresponds to the second state parameter of the target data flow, and updates the third state parameter of the target radio bearer corresponding to the target data flow.
  • the network elements of the access network are, for example, PDCP network elements or RLC network elements; core network network elements UPF network elements, AMF network elements or SMF network elements.
  • the access network element is the PDCP network element
  • the core network element is the UPF network element. network element) is similar to the embodiment of the present disclosure, and details are not repeated here.
  • the AMF network element is a relatively core module in the network, and each UE is only connected to one AMF at the same time.
  • the AMF network element communicates with the SMF network element through the Nsmf interface, such as requesting the SMF to establish, modify, and release a service context.
  • the service data is managed by the SMF network element in the form of sessions according to service attributes, IP routing of the backbone network and other parameters, and each session is managed by only one SMF.
  • QoS Quality of Service
  • the SMF network element manages the UPF network element through the N4 interface, such as requesting the UPF to establish, modify, and release the transmission channel of service data.
  • the access network element When receiving the target information sent by the core network element, the access network element obtains the first state parameter included in the target information; the first state parameter includes a data stream identifier and a first sequence number.
  • the data stream identifier is the identifier of the data stream to which the currently transmitted service data packet belongs; for example, when the UPF network element sends the service data that can be transmitted through the air interface by using the PTM method through the N3 interface, for each data stream , set a state variable Tx_NEXT_i_UPF, where i identifies the identifier of the data stream.
  • Tx_NEXT_i_UPF a state variable
  • i identifies the identifier of the data stream.
  • the initial value of this state variable is 0, but it can also be other values.
  • the first state parameter includes a data stream identifier corresponding to the first data packet and a first sequence number; the first sequence number is the transmission of the first data packet transmitted by the core network element via the target transmission interface
  • the sequence number corresponding to the sequence; the target transmission interface is such as the N3 interface.
  • the UPF network element exchanges service data with the external data network (such as the backbone network) through the N6 interface in the northbound direction, and interacts with the access network network element through the N3 interface in the southbound direction. business data.
  • the access network is a 5G wireless access network
  • the N3 interface is also called the NG-U interface, that is, the user plane part of the NG interface.
  • the second state parameter indicates the count value of the data packets of the target data flow transmitted by the core network element; the third state parameter indicates the number of data packets carried by the target radio bearer.
  • the access network element further processes the first sequence number to obtain a second state parameter; the second state parameter indicates the count value of the data packets of the target data flow transmitted by the core network element, such as target data The count value of the packets of flow i.
  • the access network element generates a PDCP data packet belonging to the target (for example, radio bearer k) according to the second state parameter, sets the count value of the PDCP data packet as the third state parameter (Tx_NEXT_Uu_k_PDCP_j), and performs subsequent processing, For example, the lowest bits (preset data bits) of the count value are truncated as the third state parameter and submitted to the lower protocol layer.
  • the target for example, radio bearer k
  • the target information includes the first data packet or synchronization information.
  • the information sending module 401 sends target information to the access network element, and the target information carries the first state parameter of the first data packet, so that the access network element can use the first sequence number according to the first sequence number. , generate the second state parameter of the target data flow corresponding to the data flow identifier, and update the third state parameter of the target radio bearer corresponding to the target data flow, so as to realize the transmission of the same data packet between different access network elements.
  • the corresponding bearer count values are the same, so as to ensure the service continuity of the UE when switching between different access network elements.
  • the embodiments of the present disclosure solve the problem that the corresponding bearer count values may be different when the same data packet is transmitted between different access network nodes in the PTM transmission mechanism in the prior art.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium.
  • the technical solutions of the present disclosure can be embodied in the form of software products in essence, or the part that contributes to the prior art, or all or part of the technical solutions, and the computer software product is stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present disclosure.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .
  • an embodiment of the present disclosure further provides a network device, including a memory 520, a transceiver 540, and a processor 510;
  • transceiver 540 for receiving and transmitting data under the control of the processor 510;
  • the processor 510 is configured to read the computer program in the memory 520 and perform the following operations:
  • the first state parameter includes a data stream identifier and a first sequence number
  • the first sequence number is the core network network The sequence number corresponding to the transmission order in which the element transmits the first data packet via the target transmission interface
  • a second state parameter of the target data stream corresponding to the data stream identifier is generated; the second state parameter indicates the count value of the data packets of the target data stream transmitted by the core network element ;
  • a third state parameter of the target radio bearer corresponding to the target data stream is updated; the third state parameter indicates the count value of the data packets carried by the target radio bearer.
  • the processor 510 is configured to:
  • a second sequence number is carried; the second sequence number is determined by the third state parameter corresponding to the air interface bearer.
  • the generating the second state parameter of the target data stream corresponding to the data stream identifier according to the first sequence number includes:
  • the first sequence number is added by one, or the first sequence number is added by one and then modulo the preset sequence number threshold to obtain the second state parameter of the target data stream corresponding to the data stream identifier.
  • the acquiring the first state parameter carried in the target information includes:
  • Obtain the data stream identifier and the initial first sequence number carried in the target information use the data stream identifier as the data stream identifier of the first state parameter, and use the initial first sequence number as the data stream identifier of the first state parameter the first sequence number of the first state parameter, or
  • Obtain the data stream identifier and the fourth sequence number carried in the target information use the data stream identifier as the data stream identifier of the first state parameter, and use the fourth sequence number and the third state parameter as the data stream identifier.
  • the first sequence number of the first state parameter is generated.
  • the target information includes the first data packet or synchronization information.
  • the updating the third state parameter of the target radio bearer corresponding to the target data stream includes:
  • the second state parameter corresponding to the data stream carried by the target radio bearer is summed to obtain the third state parameter of the target radio bearer.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors 510 represented by processor 510 and various circuits of memory 520 represented by memory 520 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface 530 provides the interface.
  • Transceiver 540 may be a number of elements, including a transmitter and a receiver, that provide means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 510 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 510 in performing operations.
  • the processor 510 can be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Comple5 Programmable Logic Device). , CPLD), the processor 510 may also adopt a multi-core architecture.
  • the processor 510 is configured to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions by invoking the computer program stored in the memory 520 .
  • the processor 510 and the memory 520 may also be arranged physically separately.
  • an embodiment of the present disclosure further provides a terminal, including a memory 620, a transceiver 640, and a processor 610;
  • transceiver 640 for receiving and transmitting data under the control of the processor 610;
  • the processor 610 is configured to read the computer program in the memory 620 and perform the following operations:
  • Target information carries the first state parameter of the first data packet, so that the access network element generates a target data stream corresponding to the data stream identifier according to the first sequence number and update the third state parameter of the target radio bearer corresponding to the target data stream;
  • the first state parameter includes a data stream identifier corresponding to the first data packet and a first sequence number; the first sequence number is the transmission of the first data packet transmitted by the core network element via the target transmission interface The sequence number corresponding to the order;
  • the second state parameter indicates the count value of the data packets of the target data flow transmitted by the core network element; the third state parameter indicates the number of data packets carried by the target radio bearer.
  • the target information includes the first data packet or synchronization information.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors 610 represented by processor 610 and various circuits of memory 620 represented by memory 620 are linked together.
  • the bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein.
  • the bus interface 630 provides the interface.
  • Transceiver 640 may be multiple elements, ie, including transmitters and receivers, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like.
  • the processor 610 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 610 in performing operations.
  • the processor 610 may be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (Comple6 Programmable Logic Device). , CPLD), the processor 610 may also adopt a multi-core architecture.
  • CPU central processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • CPLD complex programmable logic device
  • the processor 610 is configured to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions by invoking the computer program stored in the memory 620 .
  • the processor 610 and the memory 620 may also be arranged physically separately.
  • Embodiments of the present disclosure also provide a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is used to cause the processor to execute a state parameter processing method.
  • 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 (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD, BD, HVD, etc.), and semiconductor memory (eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)), etc.
  • magnetic storage eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage eg, CD, DVD, BD, HVD, etc.
  • semiconductor memory eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)
  • embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may 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 having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.
  • processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory result in the manufacture of means comprising the instructions product, the instruction means implements the functions specified in the flow or flow of the flowchart and/or the block or blocks of the block diagram.
  • processor-executable instructions can also be loaded onto a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process that Execution of the instructions provides steps for implementing the functions specified in the flowchart or blocks and/or the block or blocks of the block diagrams.
  • the device embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in One place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.
  • Various component embodiments of the present disclosure may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof.
  • a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in a computing processing device according to embodiments of the present disclosure.
  • DSP digital signal processor
  • the present disclosure can also be implemented as apparatus or apparatus programs (eg, computer programs and computer program products) for performing some or all of the methods described herein.
  • Such a program implementing the present disclosure may be stored on a computer-readable medium, or may be in the form of one or more signals. Such signals may be downloaded from Internet sites, or provided on carrier signals, or in any other form.
  • Figure 7 illustrates a computing processing device that may implement methods in accordance with the present disclosure.
  • the computing processing device traditionally includes a processor 710 and a computer program product or computer readable medium in the form of a memory 720 .
  • the memory 720 may be electronic memory such as flash memory, EEPROM (electrically erasable programmable read only memory), EPROM, hard disk, or ROM.
  • the memory 720 has storage space 730 for program code 731 for performing any of the method steps in the above-described methods.
  • storage space 730 for program code may include individual program codes 731 for implementing various steps in the above methods, respectively. These program codes can be read from or written to one or more computer program products.
  • These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. Such computer program products are typically portable or fixed storage units as described with reference to FIG. 8 .
  • the storage unit may have storage segments, storage spaces, etc. arranged similarly to the memory 720 in the computing processing device of FIG. 7 .
  • the program code may, for example, be compressed in a suitable form.
  • the storage unit includes computer readable code 731', ie code readable by a processor such as 710 for example, which when executed by a computing processing device, causes the computing processing device to perform any of the methods described above. of the various steps.
  • any reference signs placed between parentheses shall not be construed as limiting the claim.
  • the word “comprising” does not exclude the presence of elements or steps not listed in a claim.
  • the word “a” or “an” preceding an element does not exclude the presence of a plurality of such elements.
  • the present disclosure may be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware.
  • the use of the words first, second, and third, etc. do not denote any order. These words can be interpreted as names.

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Abstract

本公开实施例提供了一种状态参量处理方法及装置、网络设备。所述方法应用于接入网网元，包括：接收核心网网元发送的目标信息，获取所述目标信息包括的第一状态参量；所述第一状态参量包括数据流标识以及第一序列号；所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量；更新与所述目标数据流对应的目标无线承载的第三状态参量。本公开实施例解决了现有技术中，PTM传输机制，在不同接入网节点之间传输相同的数据包时，对应的承载计数值可能不同的问题。

Description

状态参量处理方法及装置、网络设备
相关申请的交叉引用
本公开要求在2020年10月22日提交中国专利局、申请号为202011142829.7、名称为“状态参量处理方法及装置、网络设备”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
本公开涉及移动通信技术领域，尤其涉及一种状态参量处理方法及装置、网络设备。
背景技术
在无线通信系统中，存在多个终端(User Equipment，UE)请求相同下行业务数据的场景。对于这种场景，业界提出了点到多点或多播(Point to Multipoint，PTM)机制，PTM允许网络利用特定无线资源发送单一的一份下行数据，而多个UE同时可接收这一份下行数据。相对于传统的点对点或单播(Point to Point，PTP)机制，可降低无线资源消耗。
对于传统的PTP模式，一个小区可以根据基站与单播接收终端之间的信道质量动态调整空口传输参数，例如调整调制与编码策略(Modulation and Coding Scheme，MCS)、波束方向，以提高频谱利用效率。但是，对于PTM模式，基站的信号发送需要尽可能覆盖到小区范围内的所有UE，甚至包括网络并不了解其位置与信道质量的UE，比如未处于无线资源控制(Radio Resource Control，RRC)中的UE。有鉴于此，网络侧往往不得不采用相对保守的空口传输参数，例如码率较低的MCS与全向传输，以使用更多的空口资源来传输较少的信息。
适用多播的场景多种多样，其中有诸如视频平台直播等对时延需求较为严格、可靠性需求较为宽松的业务，也有诸如时延需求较为宽松、可靠性需求较为严格的业务。多数场景下，发送端希望尽可能让每一个接收该业务的UE都能够无重复地按序接收该业务中的所有数据。
在空口传输时，为了保证下行数据包的无损、按序递交，无线通信系统采用承载机制，对每一个通过空口传输的数据包设定一个承载计数值。该承载计数值从0开始，逐一累加。UE可以根据一个承载之中每个数据包上的计数值，进行数据连续性操作，连续性操作包括对数据包进行排序、检测它们 是否有重复或缺漏等等。
然而，在第五代移动通信技术的新空口技术(5th Generation New Radio，5G NR)系统中，承载是由5G接入网节点自主决定如何建立的。具体地，5G核心网在向5G接入网发送数据时，标注该数据包属于哪一个数据流、属于哪一个业务会话；而5G接入网节点可以自主决定将属于同一个业务会话的一个或多个数据流纳入同一个承载中进行空口传输。
对于PTM场景，多个5G接入网节点开始进行PTM传输的时间点可能不同，各个节点从5G核心网接收、并通过空口以承载计数值0向UE发送的首个数据包的内容可能并不相同，由此导致不同5G接入网节点之间，针对内容相同的数据包的承载计数值不同，进而使得UE在这些节点之间移动时，无法根据数据包上的承载计数值进行数据连续性操作，业务的服务质量需求无法得到满足。
因此，现有PTM传输机制，在不同接入网节点之间传输相同的数据包时，对应的承载计数值可能不同，导致业务的连续性无法得到保证的问题。
发明内容
本公开实施例提供一种状态参量处理方法及装置、网络设备，以解决现有技术中，PTM传输机制，在不同接入网节点之间传输相同的数据包时，对应的承载计数值可能不同的问题。
第一方面，本公开实施例提供了一种状态参量处理方法，应用于接入网网元，包括：
接收核心网网元发送的目标信息，获取所述目标信息包括的第一状态参量；所述第一状态参量包括数据流标识以及第一序列号；所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；
根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量；所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；
更新与所述目标数据流对应的目标无线承载的第三状态参量；所述第三状态参量指示所述目标无线承载所承载的数据包的计数值。
可选地，所述方法包括：
通过空口承载发送第二数据包时，携带第二序列号；所述第二序列号为 所述空口承载对应的所述第三状态参量确定的。
可选地，所述根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量，包括：
将所述第一序列号作为所述数据流标识对应的目标数据流的第二状态参量；或
对所述第一序列号加一处理，或将所述第一序列号加一处理后与预设序列号阈值取模处理，得到所述数据流标识对应的目标数据流的第二状态参量。
可选地，所述获取所述目标信息中携带的第一状态参量，包括：
获取所述目标信息中携带的数据流标识与初始第一序列号，将所述数据流标识作为所述第一状态参量的所述数据流标识，并将所述初始第一序列号作为所述第一状态参量的所述第一序列号，或者
获取所述目标信息中携带的数据流标识与第四序列号，将所述数据流标识作为所述第一状态参量的所述数据流标识，并根据所述第四序列号与第三状态参量生成所述第一状态参量的所述第一序列号。
可选地，所述目标信息包括所述第一数据包或同步信息。
可选地，所述更新与所述目标数据流对应的目标无线承载的第三状态参量，包括：
确定与所述目标数据流对应的目标无线承载；
对所述目标无线承载所承载的数据流所对应的第二状态参量进行求和处理，得到所述目标无线承载的第三状态参量。
第二方面，本公开实施例还提供一种状态参量处理方法，应用于核心网网元，包括：
向接入网网元发送目标信息，在所述目标信息中携带第一数据包的第一状态参量，使所述接入网网元根据第一序列号，生成数据流标识对应的目标数据流的第二状态参量，并更新与所述目标数据流对应的目标无线承载的第三状态参量；
其中，所述第一状态参量包括所述第一数据包对应的所述数据流标识以及所述第一序列号；所述第一序列号为核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；
所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据 包的计数值；所述第三状态参量指示所述目标无线承载所承载的数据包数量。
可选地，所述目标信息包括所述第一数据包或同步信息。
第三方面，本公开实施例还提供一种网络设备，包括存储器，收发机，处理器：
存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
接收核心网网元发送的目标信息，获取所述目标信息包括的第一状态参量；所述第一状态参量包括数据流标识以及第一序列号；所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；
根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量；所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；
更新与所述目标数据流对应的目标无线承载的第三状态参量；所述第三状态参量指示所述目标无线承载所承载的数据包的计数值。
可选地，所述处理器用于：
通过空口承载发送第二数据包时，携带第二序列号；所述第二序列号为所述空口承载对应的所述第三状态参量确定的。
可选地，所述根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量，包括：
将所述第一序列号作为所述数据流标识对应的目标数据流的第二状态参量；或
对所述第一序列号加一处理，或将所述第一序列号加一处理后与预设序列号阈值取模处理，得到所述数据流标识对应的目标数据流的第二状态参量。
可选地，所述获取所述目标信息中携带的第一状态参量，包括：
获取所述目标信息中携带的数据流标识与初始第一序列号，将所述数据流标识作为所述第一状态参量的所述数据流标识，并将所述初始第一序列号作为所述第一状态参量的所述第一序列号，或者
获取所述目标信息中携带的数据流标识与第四序列号，将所述数据流标识作为所述第一状态参量的所述数据流标识，并根据所述第四序列号与第三状态参量生成所述第一状态参量的所述第一序列号。
可选地，所述目标信息包括所述第一数据包或同步信息。
可选地，所述更新与所述目标数据流对应的目标无线承载的第三状态参量，包括：
确定与所述目标数据流对应的目标无线承载；
对所述目标无线承载所承载的数据流所对应的第二状态参量进行求和处理，得到所述目标无线承载的第三状态参量。
第四方面，本公开实施例还提供一种网络设备，包括存储器，收发机，处理器：
存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
向接入网网元发送目标信息，在所述目标信息中携带第一数据包的第一状态参量，使所述接入网网元根据第一序列号，生成数据流标识对应的目标数据流的第二状态参量，并更新与所述目标数据流对应的目标无线承载的第三状态参量；
其中，所述第一状态参量包括所述第一数据包对应的所述数据流标识以及所述第一序列号；所述第一序列号为核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；
所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；所述第三状态参量指示所述目标无线承载所承载的数据包数量。
可选地，所述目标信息包括所述第一数据包或同步信息。
第五方面，本公开实施例还提供一种状态参量处理装置，应用于接入网网元，包括：
信息接收模块，用于接收核心网网元发送的目标信息，获取所述目标信息包括的第一状态参量；所述第一状态参量包括数据流标识以及第一序列号；所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；
参量生成模块，用于根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量；所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；
参量更新模块，用于更新与所述目标数据流对应的目标无线承载的第三 状态参量；所述第三状态参量指示所述目标无线承载所承载的数据包的计数值。
第六方面，本公开实施例还提供一种状态参量处理装置，状态参量处理装置，应用于核心网网元，包括：
信息发送模块，用于向接入网网元发送目标信息，在所述目标信息中携带第一数据包的第一状态参量，使所述接入网网元根据第一序列号，生成数据流标识对应的目标数据流的第二状态参量，并更新与所述目标数据流对应的目标无线承载的第三状态参量；
其中，所述第一状态参量包括所述第一数据包对应的数据流标识以及第一序列号；所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；
所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；所述第三状态参量指示所述目标无线承载所承载的数据包数量。
第七方面，本公开实施例还提供一种电子设备，该电子设备包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如上述方法中的步骤。
第八方面，本公开实施例还提供一种处理器可读存储介质，该处理器可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如上述方法中的步骤。
第九方面，本公开实施例提供了一种计算机程序，包括计算机可读代码，当所述计算机可读代码在计算处理设备上运行时，导致所述计算处理设备执行根据上述第一方面所述的方法，或者执行根据上述第二方面所述的方法。
第十方面，本公开实施例提供了一种计算机可读介质，其中存储了如上述第九方面所述的计算机程序。
在本公开实施例中，接收核心网网元发送的目标信息，获取所述目标信息包括的第一状态参量；根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量，并更新与所述目标数据流对应的目标无线承载的第三状态参量，实现不同接入网网元之间传输相同的数据包时，对应的承载计数值相同，以确保UE在不同接入网网元切换时的业务连续性。
上述说明仅是本公开技术方案的概述，为了能够更清楚了解本公开的技 术手段，而可依照说明书的内容予以实施，并且为了让本公开的上述和其它目的、特征和优点能够更明显易懂，以下特举本公开的具体实施方式。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例的描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅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为本公开实施例提供的状态参量处理方法的流程图之一；
图2为本公开实施例提供的状态参量处理方法的流程图之二；
图3为本公开实施例提供的状态参量处理装置的结构框图之一；
图4为本公开实施例提供的状态参量处理装置的结构框图之二；
图5为本公开实施例提供的网络设备结构框图之一；
图6为本公开实施例提供的网络设备的结构框图之二；
图7示意性地示出了用于执行根据本公开的方法的计算处理设备的框图；并且
图8示意性地示出了用于保持或者携带实现根据本公开的方法的程序代码的存储单元。
具体实施例
为使本公开实施例的目的、技术方案和优点更加清楚，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，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作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。
本公开实施例中术语“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这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本公开实施例中术语“多个”是指两个或两个以上，其它量词与之类似。
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。
本公开实施例提供了一种状态参量处理方法及装置、网络设备，以解决现有技术中，PTM传输机制，在不同接入网节点之间传输相同的数据包时，对应的承载计数值可能不同的问题。
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。
此外，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设备和网络设备。系统中还可以包括核心网部分，例如演进的分组系统(Evolved Packet System,EPS)、5G系统(5GS)等。
本公开实施例涉及的终端设备，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，终端设备的名称可能也不相同，例如在5G系统中，终端设备可以称为用户设备(User Equipment，UE)。无线终端设备可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网(Core Network,CN)进行通信，无线终端设备可以是移动终端设备，如移动电话(或称为“蜂窝”电话)和具有移动终端设备的计算机，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。无线终端设备也可以称为系统、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)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(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设备通信的设备，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，作为无线终端设备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。
网络设备与终端设备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。
在无线通信系统中，切换是指针对一个业务，变更其通信网络内传输途 径的操作。在涉及变更分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)所在网元的切换过程(即原本通过一个PDCP网元传输，在某一时刻改由另一个PDCP网元传输)中，为了提升以PTP形式发送的下行业务的连续性，甚至达到无损、按序递交的要求，切换的源PDCP网元会向切换的目标PDCP网元提供其从核心网收到但尚未送达UE的数据，该机制称作“数据前转”(Data For Warding)。
通常情况下，源PDCP网元侧与目标PDCP网元侧的业务流到无线承载的映射相同，数据前转可以按照无线承载的粒度进行，每个数据包均包含有序列号。同时，源PDCP网元侧还会向目标PDCP网元侧提供一个源PDCP网元的传输状态总结，其中PDCP计数值指示了哪些PDCP数据包被UE已经成功地通过空口接收了。在切换过程中，UPF会向源传输路径上，针对每个会话发送一个结束标识(End Marker)，之后的所有数据均通过新传输路径发送。当源PDCP网元侧收到UPF所发送的结束标识时，其获知该会话已经不再通过源侧的N3通道传输了，之前收到的数据包为通过该通道传输的最后的数据包。此后，针对每一个无线承载，当该无线承载上所有需要前转的数据均已发送至目标PDCP网元侧时，源PDCP网元侧将发送一个结束标识。目标PDCP在收到这个针对无线承载的结束标识时，其获知针对该无线承载的数据前转已经结束了。此后，对于它从UPF经由服务数据适配协议(Service Data Adaptation Protocol，SDAP)层接收的新的数据包，将在数据前转的最后一个数据包的计数值基础之上继续编号。这一机制保证了UE在接收数据时，PDCP的计数值是连续的，数据包的内容也是连续的。
然而，若目标UE在切换过程中，该业务数据的目标PDCP网元侧正在以PTM的方式发送，那么为了不干扰其他正在接收该业务数据的UE的业务连续性，不会为了目标UE调整PDCP计数值。因此，若要保证目标UE的业务连续性，要求源侧和目标侧在传输内容相同的业务数据包时，其PDCP计数值也应当是相同的。因此，为了保证不同PDCP网元在传输内容相同的业务数据包时PDCP计数值相同的，本公开实施例提供了一种状态参量处理方法，如图1所示，所述方法应用于接入网网元，所述方法包括：
步骤101，接收核心网网元发送的目标信息，获取所述目标信息包括的第一状态参量；所述第一状态参量包括数据流标识以及第一序列号；所述第一 序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号。
其中，接入网网元例如PDCP网元或无线链路控制层(Radio Link Control,RLC)网元；核心网网元例如用户面功能(User Plane Function，UPF)网元、接入及移动性管理功能(Access and Mobility Management Function，AMF)网元或会话管理功能(Session Management Function，SMF)网元。为了便于说明，本公开实施例中以接入网网元为PDCP网元，核心网网元为UPF网元举例，其他情况(接入网网元为其他网元，或核心网网元为其他网元)与本公开实施例类似，在此不再赘述。
具体地，AMF网元是网络中较为核心的模块，每个UE同一时间仅与一个AMF连接。AMF网元通过Nsmf接口与SMF网元通信，例如请求SMF建立、修改、释放业务上下文。业务数据根据业务属性、骨干网的IP路由等参数，以会话(Session)的形式被SMF网元管理，且每个会话仅由一个SMF管理。每个会话之中，根据不同业务数据的服务质量(Quality of Service，QoS)需求，可以分为一个或多个业务数据流，可以为每个业务数据流设定数据流标识。SMF网元通过N4接口管理UPF网元，例如请求UPF建立、修改、释放业务数据的传输通道。
接入网网元在接收到核心网网元发送的目标信息时，获取所述目标信息包括的第一状态参量；所述第一状态参量包括数据流标识以及第一序列号。
具体地，数据流标识即当前所述传输的业务数据包所属的数据流的标识；比如，UPF网元在通过N3接口发送可以利用PTM的方式通过空口传输的业务数据中，针对每一个数据流，设置一个状态变量Tx_NEXT_i_UPF，其中i标识数据流的标识。通常情况下，该状态变量的初始值为0，也可以为其他值。
所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；目标传输接口例如N3接口，通常情况下，UPF网元北向通过N6接口与外界的数据网络(例如骨干网)交互业务数据，南向通过N3接口与接入网网元交互业务数据。若该接入网为5G无线接入网，则N3接口又称作NG-U接口，亦即NG接口之中的用户平面部分。
当UPF网元通过N3接口发送属于数据流i的第一数据包时，其首先在第一数据包的数据包头中加入一个第一序列号(Sequence Number)，用 Tx_NEXT_N3_i_UPF表示。N3通道通过添加接口序列号的方式，有利于会话中的所有数据包均得以被无损、按序地传输。
这样，在通过N3接口接收可以利用PTM的方式通过空口传输的第一数据包时，将第一序列号发送至该接入网设备(例如gNB)的SDAP层。SDAP层根据该数据包中的数据流标识以及预设的映关系，将第一数据包映射至对应的无线承载之中，并连同其中的第一序列号发送至该gNB的PDCP层。
步骤102，根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量；所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值。
接入网网元对第一序列号进行进一步处理得到第二状态参量；所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值，比如目标数据流i的数据包的计数值。
可选地，第二状态参量用Rx_NEXT_N3_i_PDCP_j表示，其中j表示PDCP的标识；可以对第一序列号加1处理得到第二状态参量，则第二状态参量表示当前传输的第一数据包的下一个N3数据包的序列号；还可将第一序列号加1后与预设序列号上限加1取模作为第一序列号；可选地，预设序列号上限加1用rangeN3SN表示，其取值可以为2 24。
步骤103，更新与所述目标数据流对应的目标无线承载的第三状态参量；所述第三状态参量指示所述目标无线承载所承载的数据包的计数值。
接入网网元根据第二状态参量，生成一个属于目标(比如为无线承载k)的PDCP数据包，将该PDCP数据包的计数值置为第三状态参量(Tx_NEXT_Uu_k_PDCP_j)，并进行后续处理，比如将该计数值的最低若干比特(预设数据位数)截取为第三状态参量并提交至更低协议层。
具体地，生成第二状态参量后，接入网网元更新第三状态参量；第三状态参量表示所有映射至无线承载k的数据流的计数值，即对映射至目标无线承载的数据包数量进行求和，也即目标无线承载的PDCP计数值；可选地，PDCP计数值通常设有最大阈值，例如最大阈值为2 32；若第三状态参量大于或等于该最大阈值，则将PDCP计数值的最低若干比特(预设数据位数)截取为第三状态参量。
这样，一方面，当两个不同的接入网网元根据相同的数据流至无线承载 的映射关系映射数据流，且以PTM的方式通过空口传输业务数据包时，基于核心网网元通过N3接口的按序传输，保证了两个接入网网元能以完全相同的次序接收业务数据。
另一方面，在对PDCP数据包计算第三状态参量(PDCP计数值，即承载计数值)时，第三状态参量取值总为：该无线承载所包含的所有数据流的上一个数据包的第二状态参量。由于不同接入网网元通过N3接口接收数据包的次序是相同的，它们在处理任何一个数据包的时候，其各自的“每一个数据流的上一个数据包”也全部都是相同的，因此可保证了不同接入网网元之间，只要数据流至数据承载的映射关系是相同的，针对同一份业务数据所计算第三状态参量也是相同的；而接入网网元通过空口承载向UE发送数据包时，会根据第三状态参量确定所发送数据包的序列号，也就是说，UE所结接收到的数据包的序列号是根据第三状态参量确定的；这样，若UE在不同接入网网元之间切换，比如由gNB1切换至gNB2，由于gNB1与gNB2的针对同一份业务数据所计算第三状态参量也是相同的，二者发送给UE的序列号也是相同的，也即UE在不同的接入网网元之下所接收的数据包序列号是一致的，进而保证了UE在gNB之间移动时的业务连续性。
本公开实施例中，接收核心网网元发送的目标信息，获取所述目标信息包括的第一状态参量；根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量，并更新与所述目标数据流对应的目标无线承载的第三状态参量，实现不同接入网网元之间传输相同的数据包时，对应的承载计数值相同，以确保UE在不同接入网网元切换时的业务连续性。本公开实施例解决了现有技术中，PTM传输机制，在不同接入网节点之间传输相同的数据包时，对应的承载计数值可能不同的问题。
在一个可选实施例中，所述方法包括：
通过空口承载发送第二数据包时，携带第二序列号；所述第二序列号为所述空口承载对应的所述第三状态参量确定的，比如截取第三状态参量的最低若干比特(预设数据位数)作为第二序列号。
由于不同接入网网元传输相同的数据包时，对应的承载计数值相同；若UE在不同接入网网元之间切换，比如由gNB1切换至gNB2，由于gNB1与gNB2的针对同一份业务数据所计算第三状态参量也是相同的，二者发送给 UE的序列号也是相同的，也即UE在不同的接入网网元之下所接收的数据包序列号是一致的，进而保证了UE在gNB之间移动时的业务连续性。
在一个可选实施例中，所述根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量，包括：
将所述第一序列号作为所述数据流标识对应的目标数据流的第二状态参量；或
对所述第一序列号加一处理，或将所述第一序列号加一处理后与预设序列号阈值取模处理，得到所述数据流标识对应的目标数据流的第二状态参量。
可以对第一序列号加1处理得到第二状态参量，则第二状态参量表示当前传输的第一数据包的下一个N3数据包的序列号；还可将第一序列号加1后与预设序列号阈值(预设序列号上限)加1取模作为第一序列号；可选地，预设序列号阈值加1的取值可以为2 24。
在一个可选实施例中，所述获取所述目标信息中携带的第一状态参量，包括：
获取所述目标信息中携带的数据流标识与初始第一序列号，将所述数据流标识作为所述第一状态参量的所述数据流标识，并将所述初始第一序列号作为所述第一状态参量的所述第一序列号；或者
获取所述目标信息中携带的数据流标识与第四序列号，将所述数据流标识作为所述第一状态参量的所述数据流标识，并根据所述第四序列号与第三状态参量生成所述第一状态参量的所述第一序列号。
由于无线通信系统中，计数值和序列号与状态变量往往以一个固定比特长度的非负整数的格式存储，理论上存在数值循环的情况(比如在8比特非负整形数值中，255+1＝0)。因此，根据所述第四序列号与第三状态参量生成所述第一状态参量的所述第一序列号，比如，第四序列号的数据位数小于第三状态变量的数据位数，说明原第四序列号的部分数据位被截掉了；比如若第三状态参量为5个数据位，而第四序列号为3个数据位，说明第四序列号为截取自原第四序列号的最低3位的结果；也即超帧号(Hyper Frame Number，HFN)后，原第四序列号被截掉了最高的若干数据位；因此，本公开实施例中，若相较于第三状态参量，第四序列号缺少N个数据位，则将第三状态变量的前N个数据位添加到第四序列号之前，还原得到第一序列号。
例如，为了降低资源消耗，UPF网元在发送下行数据时，所包含的仍然是N3序列号(第四序列号)，而gNB网元在接收该数据时，首先由N3序列号对应的第三状态参量确定出N3计数值，然后再确定第一序列号。
在一个可选实施例中，所述目标信息包括所述第一数据包或同步信息。
若PDCP在处理最早接收的数据包时，比如数据流i的首个数据包，由于缺少该数据流的上一个数据包，而无法计算第二状态参量；因此，当接入网网元开始通过N3接口接收业务数据，且所述业务数据可以利用PTM的方式通过空口传输时，UPF通过N3接口发送一个同步信息，其中包含相应的会话之中每一个数据流的标识，以及针对该数据流的第一序列号。
这样，接入网网元在接收同步信息后，按照同步信息中数据流的标识，将第二状态参量的取值初始化为根据同步信息中的第一序列号计算的第二状态参量。
在一个可选实施例中，所述更新与所述目标数据流对应的目标无线承载的第三状态参量，包括：
确定与所述目标数据流对应的目标无线承载；
对所述目标无线承载所承载的数据流所对应的第二状态参量进行求和处理，得到所述目标无线承载的第三状态参量，第三状态参量表示所有映射至目标无线承载的数据流的计数值，即对映射至目标无线承载的数据包数量进行求和，也即目标无线承载的PDCP计数值。
作为示例，参见以下表1，表1示出了利用PTM的方式通过空口传输的业务会话的部分状态参量。其中包含三个数据流，其标识分别为R、G、B。gNB1网元与gNB2网元均将数据流R与G映射至无线承载1上，而将数据流B映射至无线承载2上。
gNB1从UPF刚开始通过N3接口发送数据时即开始接收，而gNB2在UPF已经传输了10个数据包之后才开始接收的。
其中，Tx_NEXT_N3_R_UPF表示数据流R的第一序列号；
Tx_NEXT_N3_G_UPF表示数据流G的第一序列号；
Tx_NEXT_N3_B_UPF表示数据流B的第一序列号；
Rx_NEXT_N3_R_PDCP_1表示数据流R在PDCP1的第二状态参量；
Rx_NEXT_N3_G_PDCP_1表示数据流G在PDCP1的第二状态参量；
Rx_NEXT_N3_B_PDCP_1表示数据流B在PDCP1的第二状态参量；
Tx_NEXT_Uu_1_PDCP_1表示无线承载1的第三状态参量；
Tx_NEXT_Uu_2_PDCP_1表示无线承载2的第三状态参量。
表1：
Figure PCTCN2021118405-appb-000001
根据表1可知，在T0时刻，N3接口传输同步信息，其中指示了每一个数据流的当前第一序列号均为0。此时，接入网网元gNB1直接将针对每一个数据流的第二状态参量置为相应的第一序列号的值，即0；同时gNB1将无线承载1的第三状态参量置为数据流R所对应的第二状态参量与数据流G所对应的第二状态参量之和，即0，将无线承载1的第三状态参量置为数据流B所对应的第二状态参量，即0。
在T1时刻，N3传输数据流B的0号数据包，此时，接入网网元gNB1确定数据流B的第一序列号为0，对第一序列号加1处理得到第二状态参量1；同时更新无线承载2的第三状态参量为数据流B的第二状态参量的值，即1。
在T2时刻，N3传输数据流G的0号数据包，此时，接入网网元gNB1确定数据流G的第一序列号为0，对第一序列号加1处理得到第二状态参量1；同时更新无线承载1的第三状态参量为数据流R的第二状态参量与数据流G的第二状态参量之和，即1；
在T3时刻，N3传输数据流B的1号数据包，此时，接入网网元gNB1确定数据流G的第一序列号为1，对第一序列号加1处理得到第二状态参量2；同时更新无线承载2的第三状态参量为数据流B的第二状态参量的值，即2；
……
gNB2在不同时刻开始接收数据包时，按照上述同样方式计算第三状态参量是相同的，因此gNB1与gNB2发送给UE的数据包的序列号也是相同的，UE在不同的gNB网元之下所接收的数据包序列号是一致的，进而保证了UE在gNB之间移动时的业务连续性。
本公开实施例中，接收核心网网元发送的目标信息，获取所述目标信息包括的第一状态参量；根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量，并更新与所述目标数据流对应的目标无线承载的第三状态参量，实现不同接入网网元之间传输相同的数据包时，对应的承载计数值相同，以确保UE在不同接入网网元切换时的业务连续性。
参见图2，本公开实施例提供了一种状态参量处理方法，所述方法应用于核心网网元，所述方法包括：
步骤201，向接入网网元发送目标信息，在所述目标信息中携带第一数据包的第一状态参量，使所述接入网网元根据第一序列号，生成数据流标识对应的目标数据流的第二状态参量，并更新与所述目标数据流对应的目标无线承载的第三状态参量。
其中，接入网网元例如PDCP网元或RLC网元；核心网网元UPF网元、AMF网元或SMF网元。为了便于说明，本公开实施例中以接入网网元为PDCP网元，核心网网元为UPF网元举例，其他情况(接入网网元为其他网元，或核心网网元为其他网元)与本公开实施例类似，在此不再赘述。
具体地，AMF网元是网络中较为核心的模块，每个UE同一时间仅与一个AMF连接。AMF网元通过Nsmf接口与SMF网元通信，例如请求SMF建立、修改、释放业务上下文。业务数据根据业务属性、骨干网的IP路由等参数，以会话(Session)的形式被SMF网元管理，且每个会话仅由一个SMF管理。每个会话之中，根据不同业务数据的服务质量(Quality of Service，QoS)需求，可以分为一个或多个业务数据流，可以为每个业务数据流设定数据流标识。SMF网元通过N4接口管理UPF网元，例如请求UPF建立、修改、释放业务数据的传输通道。
接入网网元在接收到核心网网元发送的目标信息时，获取所述目标信息包括的第一状态参量；所述第一状态参量包括数据流标识以及第一序列号。
具体地，数据流标识即当前所述传输的业务数据包所属的数据流的标识；比如，UPF网元在通过N3接口发送可以利用PTM的方式通过空口传输的业务数据中，针对每一个数据流，设置一个状态变量Tx_NEXT_i_UPF，其中i标识数据流的标识。通常情况下，该状态变量的初始值为0，也可以为其他值。
其中，所述第一状态参量包括所述第一数据包对应的所述数据流标识以及所述第一序列号；所述第一序列号为核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；目标传输接口例如N3接口，通常情况下，UPF网元北向通过N6接口与外界的数据网络(例如骨干网)交互业务数据，南向通过N3接口与接入网网元交互业务数据。若该接入网为5G无线接入网，则N3接口又称作NG-U接口，亦即NG接口之中的用户平面部分。
所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；所述第三状态参量指示所述目标无线承载所承载的数据包数量。接入网网元对第一序列号进行进一步处理得到第二状态参量；所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值，比如目标数据流i的数据包的计数值。
接入网网元根据第二状态参量，生成一个属于目标(比如为无线承载k)的PDCP数据包，将该PDCP数据包的计数值置为第三状态参量(Tx_NEXT_Uu_k_PDCP_j)，并进行后续处理，比如将该计数值的最低若干比特(预设数据位数)截取为第三状态参量并提交至更低协议层。
具体地，生成第二状态参量后，接入网网元更新第三状态参量；第三状 态参量表示所有映射至无线承载k的数据流的计数值，即对映射至目标无线承载的数据包数量进行求和，也即目标无线承载的PDCP计数值；可选地，PDCP计数值通常设有最大阈值，例如最大阈值为2 32；若第三状态参量大于第三状态参量，则将PDCP计数值的最低若干比特(预设数据位数)截取为第三状态参量。
这样，一方面，当两个不同的接入网网元根据相同的数据流至无线承载的映射关系映射数据流，且以PTM的方式通过空口传输业务数据包时，基于核心网网元通过N3接口的按序传输，保证了两个接入网网元能以完全相同的次序接收业务数据。
另一方面，在对PDCP数据包计算第三状态参量(PDCP计数值，即承载计数值)时，第三状态参量取值总为：该无线承载所包含的所有数据流的上一个数据包的第二状态参量。由于不同接入网网元通过N3接口接收数据包的次序是相同的，它们在处理任何一个数据包的时候，其各自的“每一个数据流的上一个数据包”也全部都是相同的，因此可保证了不同接入网网元之间，只要数据流至数据承载的映射关系是相同的，针对同一份业务数据所计算第三状态参量也是相同的；而接入网网元通过空口承载向UE发送数据包时，会根据第三状态参量确定所发送数据包的序列号，也就是说，UE所结接收到的数据包的序列号是根据第三状态参量确定的；这样，若UE在不同接入网网元之间切换，比如由gNB1切换至gNB2，由于gNB1与gNB2的针对同一份业务数据所计算第三状态参量也是相同的，二者发送给UE的序列号也是相同的，也即UE在不同的接入网网元之下所接收的数据包序列号是一致的，进而保证了UE在gNB之间移动时的业务连续性。
在一个可选实施例中，所述目标信息包括所述第一数据包或同步信息。
若PDCP在处理最早接收的数据包时，比如数据流i的首个数据包，由于缺少该数据流的上一个数据包，而无法计算第二状态参量；因此，当接入网网元开始通过N3接口接收业务数据，且所述业务数据可以利用PTM的方式通过空口传输时，UPF通过N3接口发送一个同步信息，其中包含相应的会话之中每一个数据流的标识，以及针对该数据流的第一序列号。
这样，接入网网元在接收同步信息后，按照同步信息中数据流的标识，将第二状态参量的取值初始化为根据同步信息中的第一序列号计算的第二状 态参量。
本公开实施例中，向接入网网元发送目标信息，在所述目标信息中携带第一数据包的第一状态参量，使所述接入网网元根据第一序列号，生成数据流标识对应的目标数据流的第二状态参量，并更新与所述目标数据流对应的目标无线承载的第三状态参量，实现不同接入网网元之间传输相同的数据包时，对应的承载计数值相同，以确保UE在不同接入网网元切换时的业务连续性。本公开实施例解决了现有技术中，PTM传输机制，在不同接入网节点之间传输相同的数据包时，对应的承载计数值可能不同的问题。
以上介绍了本公开实施例提供的状态参量处理方法，下面将结合附图介绍本公开实施例提供的状态参量处理装置。
参见图3，本公开实施例还提供了一种状态参量处理装置，应用于接入网网元，包括：
信息接收模块301，用于接收核心网网元发送的目标信息，获取所述目标信息包括的第一状态参量；所述第一状态参量包括数据流标识以及第一序列号；所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号。
其中，接入网网元例如PDCP网元或RLC网元；核心网网元UPF网元、AMF网元或SMF网元。为了便于说明，本公开实施例中以接入网网元为PDCP网元，核心网网元为UPF网元举例，其他情况(接入网网元为其他网元，或核心网网元为其他网元)与本公开实施例类似，在此不再赘述。
具体地，AMF网元是网络中较为核心的模块，每个UE同一时间仅与一个AMF连接。AMF网元通过Nsmf接口与SMF网元通信，例如请求SMF建立、修改、释放业务上下文。业务数据根据业务属性、骨干网的IP路由等参数，以会话(Session)的形式被SMF网元管理，且每个会话仅由一个SMF管理。每个会话之中，根据不同业务数据的QoS需求，可以分为一个或多个业务数据流，可以为每个业务数据流设定数据流标识。SMF网元通过N4接口管理UPF网元，例如请求UPF建立、修改、释放业务数据的传输通道。
接入网网元在接收到核心网网元发送的目标信息时，获取所述目标信息包括的第一状态参量；所述第一状态参量包括数据流标识以及第一序列号。
具体地，数据流标识即当前所述传输的业务数据包所属的数据流的标识； 比如，UPF网元在通过N3接口发送可以利用PTM的方式通过空口传输的业务数据中，针对每一个数据流，设置一个状态变量Tx_NEXT_i_UPF，其中i标识数据流的标识。通常情况下，该状态变量的初始值为0，也可以为其他值。
所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；目标传输接口例如N3接口，通常情况下，UPF网元北向通过N6接口与外界的数据网络(例如骨干网)交互业务数据，南向通过N3接口与接入网网元交互业务数据。若该接入网为5G无线接入网，则N3接口又称作NG-U接口，亦即NG接口之中的用户平面部分。
当UPF网元通过N3接口发送属于数据流i的第一数据包时，其首先在第一数据包的数据包头中加入一个第一序列号，用Tx_NEXT_N3_i_UPF表示。N3通道通过添加接口序列号的方式，有利于会话中的所有数据包均得以被无损、按序地传输。
这样，在通过N3接口接收可以利用PTM的方式通过空口传输的第一数据包时，将第一序列号发送至该接入网设备(例如gNB)的SDAP层。SDAP层根据该数据包中的数据流标识以及预设的映关系，将第一数据包映射至对应的无线承载之中，并连同其中的第一序列号发送至该gNB的PDCP层。
参量生成模块302，用于根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量；所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值。
接入网网元对第一序列号进行进一步处理得到第二状态参量；所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值，比如目标数据流i的数据包的计数值。
可选地，第二状态参量用Rx_NEXT_N3_i_PDCP_j表示，其中j表示PDCP的标识；可以对第一序列号加1处理得到第二状态参量，则第二状态参量表示当前传输的第一数据包的下一个N3数据包的序列号；还可将第一序列号加1后与预设序列号上限加1取模作为第一序列号；可选地，预设序列号上限加1用rangeN3SN表示，其取值可以为2 24。
参量更新模块303，用于更新与所述目标数据流对应的目标无线承载的第三状态参量；所述第三状态参量指示所述目标无线承载所承载的数据包的计数值。
接入网网元根据第二状态参量，生成一个属于目标(比如为无线承载k)的PDCP数据包，将该PDCP数据包的计数值置为第三状态参量(Tx_NEXT_Uu_k_PDCP_j)，并进行后续处理，比如将该计数值的最低若干比特(预设数据位数)截取为第三状态参量并提交至更低协议层。
具体地，生成第二状态参量后，接入网网元更新第三状态参量；第三状态参量表示所有映射至无线承载k的数据流的计数值，即对映射至目标无线承载的数据包数量进行求和，也即目标无线承载的PDCP计数值；可选地，PDCP计数值通常设有最大阈值，例如最大阈值为2 32；若第三状态参量大于第三状态参量，则将PDCP计数值的最低若干比特(预设数据位数)截取为第三状态参量。
这样，一方面，当两个不同的接入网网元根据相同的数据流至无线承载的映射关系映射数据流，且以PTM的方式通过空口传输业务数据包时，基于核心网网元通过N3接口的按序传输，保证了两个接入网网元能以完全相同的次序接收业务数据。
另一方面，在对PDCP数据包计算第三状态参量(PDCP计数值，即承载计数值)时，第三状态参量取值总为：该无线承载所包含的所有数据流的上一个数据包的第二状态参量。由于不同接入网网元通过N3接口接收数据包的次序是相同的，它们在处理任何一个数据包的时候，其各自的“每一个数据流的上一个数据包”也全部都是相同的，因此可保证了不同接入网网元之间，只要数据流至数据承载的映射关系是相同的，针对同一份业务数据所计算第三状态参量也是相同的；而接入网网元通过空口承载向UE发送数据包时，会根据第三状态参量确定所发送数据包的序列号，也就是说，UE所结接收到的数据包的序列号是根据第三状态参量确定的；这样，若UE在不同接入网网元之间切换，比如由gNB1切换至gNB2，由于gNB1与gNB2的针对同一份业务数据所计算第三状态参量也是相同的，二者发送给UE的序列号也是相同的，也即UE在不同的接入网网元之下所接收的数据包序列号是一致的，进而保证了UE在gNB之间移动时的业务连续性。
可选地，本公开实施例中，所述方法包括：
通过空口承载发送第二数据包时，携带第二序列号；所述第二序列号为所述空口承载对应的所述第三状态参量确定的。
可选地，本公开实施例中，所述参量生成模块302包括：
第一处理子模块，用于将所述第一序列号作为所述数据流标识对应的目标数据流的第二状态参量；或
第二处理子模块，用于对所述第一序列号加一处理，或将所述第一序列号加一处理后与预设序列号阈值取模处理，得到所述数据流标识对应的目标数据流的第二状态参量。
可选地，本公开实施例中，所述信息接收模块301包括：
第一获取子模块，用于获取所述目标信息中携带的数据流标识与初始第一序列号，将所述数据流标识作为所述第一状态参量的所述数据流标识，并将所述初始第一序列号作为所述第一状态参量的所述第一序列号，或者
第二获取子模块，用于获取所述目标信息中携带的数据流标识与第四序列号，将所述数据流标识作为所述第一状态参量的所述数据流标识，并根据所述第四序列号与第三状态参量生成所述第一状态参量的所述第一序列号。
可选地，本公开实施例中，所述目标信息包括所述第一数据包或同步信息。
可选地，本公开实施例中，所述参量更新模块303包括：
确定子模块，用于确定与所述目标数据流对应的目标无线承载；
求和子模块，用于对所述目标无线承载所承载的数据流所对应的第二状态参量进行求和处理，得到所述目标无线承载的第三状态参量。
本公开实施例中，信息接收模块301接收核心网网元发送的目标信息，获取所述目标信息包括的第一状态参量；参量生成模块302根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量，参量更新模块303更新与所述目标数据流对应的目标无线承载的第三状态参量，实现不同接入网网元之间传输相同的数据包时，对应的承载计数值相同，以确保UE在不同接入网网元切换时的业务连续性。
参见图4，本公开实施例还提供了一种状态参量处理装置，应用于核心网网元，包括：
信息发送模块401，用于向接入网网元发送目标信息，在所述目标信息中携带第一数据包的第一状态参量，使所述接入网网元根据第一序列号，生成数据流标识对应的目标数据流的第二状态参量，并更新与所述目标数据流对 应的目标无线承载的第三状态参量。
其中，接入网网元例如PDCP网元或RLC网元；核心网网元UPF网元、AMF网元或SMF网元。为了便于说明，本公开实施例中以接入网网元为PDCP网元，核心网网元为UPF网元举例，其他情况(接入网网元为其他网元，或核心网网元为其他网元)与本公开实施例类似，在此不再赘述。
具体地，AMF网元是网络中较为核心的模块，每个UE同一时间仅与一个AMF连接。AMF网元通过Nsmf接口与SMF网元通信，例如请求SMF建立、修改、释放业务上下文。业务数据根据业务属性、骨干网的IP路由等参数，以会话(Session)的形式被SMF网元管理，且每个会话仅由一个SMF管理。每个会话之中，根据不同业务数据的服务质量(Quality of Service，QoS)需求，可以分为一个或多个业务数据流，可以为每个业务数据流设定数据流标识。SMF网元通过N4接口管理UPF网元，例如请求UPF建立、修改、释放业务数据的传输通道。
接入网网元在接收到核心网网元发送的目标信息时，获取所述目标信息包括的第一状态参量；所述第一状态参量包括数据流标识以及第一序列号。
具体地，数据流标识即当前所述传输的业务数据包所属的数据流的标识；比如，UPF网元在通过N3接口发送可以利用PTM的方式通过空口传输的业务数据中，针对每一个数据流，设置一个状态变量Tx_NEXT_i_UPF，其中i标识数据流的标识。通常情况下，该状态变量的初始值为0，也可以为其他值。
其中，所述第一状态参量包括所述第一数据包对应的数据流标识以及第一序列号；所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；目标传输接口例如N3接口，通常情况下，UPF网元北向通过N6接口与外界的数据网络(例如骨干网)交互业务数据，南向通过N3接口与接入网网元交互业务数据。若该接入网为5G无线接入网，则N3接口又称作NG-U接口，亦即NG接口之中的用户平面部分。
所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；所述第三状态参量指示所述目标无线承载所承载的数据包数量。接入网网元对第一序列号进行进一步处理得到第二状态参量；所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值，比如目标数据流i的数据包的计数值。
接入网网元根据第二状态参量，生成一个属于目标(比如为无线承载k)的PDCP数据包，将该PDCP数据包的计数值置为第三状态参量(Tx_NEXT_Uu_k_PDCP_j)，并进行后续处理，比如将该计数值的最低若干比特(预设数据位数)截取为第三状态参量并提交至更低协议层。
可选地，本公开实施例中，所述目标信息包括所述第一数据包或同步信息。
本公开实施例中，信息发送模块401向接入网网元发送目标信息，在所述目标信息中携带第一数据包的第一状态参量，使所述接入网网元根据第一序列号，生成数据流标识对应的目标数据流的第二状态参量，并更新与所述目标数据流对应的目标无线承载的第三状态参量，实现不同接入网网元之间传输相同的数据包时，对应的承载计数值相同，以确保UE在不同接入网网元切换时的业务连续性。本公开实施例解决了现有技术中，PTM传输机制，在不同接入网节点之间传输相同的数据包时，对应的承载计数值可能不同的问题。
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。
在此需要说明的是，本公开实施例提供的上述装置，能够实现上述方法实施例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。
如图5所示，本公开的实施例还提供了一种网络设备，包括存储器520、收发机540、处理器510；
存储器520，用于存储计算机程序；
收发机540，用于在处理器510的控制下接收和发送数据；
处理器510，用于读取所述存储器520中的计算机程序并执行以下操作：
接收核心网网元发送的目标信息，获取所述目标信息包括的第一状态参量；所述第一状态参量包括数据流标识以及第一序列号；所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；
根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量；所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；
更新与所述目标数据流对应的目标无线承载的第三状态参量；所述第三状态参量指示所述目标无线承载所承载的数据包的计数值。
可选地，本公开实施例中，所述处理器510用于：
通过空口承载发送第二数据包时，携带第二序列号；所述第二序列号为所述空口承载对应的所述第三状态参量确定的。
可选地，本公开实施例中，所述根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量，包括：
将所述第一序列号作为所述数据流标识对应的目标数据流的第二状态参量；或
对所述第一序列号加一处理，或将所述第一序列号加一处理后与预设序列号阈值取模处理，得到所述数据流标识对应的目标数据流的第二状态参量。
可选地，本公开实施例中，所述获取所述目标信息中携带的第一状态参量，包括：
获取所述目标信息中携带的数据流标识与初始第一序列号，将所述数据流标识作为所述第一状态参量的所述数据流标识，并将所述初始第一序列号作为所述第一状态参量的所述第一序列号，或者
获取所述目标信息中携带的数据流标识与第四序列号，将所述数据流标识作为所述第一状态参量的所述数据流标识，并根据所述第四序列号与第三 状态参量生成所述第一状态参量的所述第一序列号。
可选地，本公开实施例中，所述目标信息包括所述第一数据包或同步信息。
可选地，本公开实施例中，所述更新与所述目标数据流对应的目标无线承载的第三状态参量，包括：
确定与所述目标数据流对应的目标无线承载；
对所述目标无线承载所承载的数据流所对应的第二状态参量进行求和处理，得到所述目标无线承载的第三状态参量。
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510代表的一个或多个处理器510和存储器520代表的存储器520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530提供接口。收发机540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510负责管理总线架构和通常的处理，存储器520可以存储处理器510在执行操作时所使用的数据。
处理器510可以是中央处埋器(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(Comple5 Programmable Logic Device，CPLD)，处理器510也可以采用多核架构。
处理器510通过调用存储器520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任一所述方法。处理器510与存储器520也可以物理上分开布置。
如图6所示，本公开的实施例还提供了一种终端，包括存储器620、收发机640、处理器610；
存储器620，用于存储计算机程序；
收发机640，用于在处理器610的控制下接收和发送数据；
处理器610，用于读取所述存储器620中的计算机程序并执行以下操作：
向接入网网元发送目标信息，在所述目标信息中携带第一数据包的第一 状态参量，使所述接入网网元根据第一序列号，生成数据流标识对应的目标数据流的第二状态参量，并更新与所述目标数据流对应的目标无线承载的第三状态参量；
其中，所述第一状态参量包括所述第一数据包对应的数据流标识以及第一序列号；所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；
所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；所述第三状态参量指示所述目标无线承载所承载的数据包数量。
可选地，本公开实施例中，所述目标信息包括所述第一数据包或同步信息。
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610代表的一个或多个处理器610和存储器620代表的存储器620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630提供接口。收发机640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610负责管理总线架构和通常的处理，存储器620可以存储处理器610在执行操作时所使用的数据。
处理器610可以是中央处埋器(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(Comple6 Programmable Logic Device，CPLD)，处理器610也可以采用多核架构。
处理器610通过调用存储器620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任一所述方法。处理器610与存储器620也可以物理上分开布置。
在此需要说明的是，本公开实施例提供的上述装置，能够实现上述方法实施例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。
本公开的实施例还提供了一种处理器可读存储介质，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状态参量处理方法。
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、设备(系统)、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。
以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或 者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下，即可以理解并实施。
本公开的各个部件实施例可以以硬件实现，或者以在一个或者多个处理器上运行的软件模块实现，或者以它们的组合实现。本领域的技术人员应当理解，可以在实践中使用微处理器或者数字信号处理器(DSP)来实现根据本公开实施例的计算处理设备中的一些或者全部部件的一些或者全部功能。本公开还可以实现为用于执行这里所描述的方法的一部分或者全部的设备或者装置程序(例如，计算机程序和计算机程序产品)。这样的实现本公开的程序可以存储在计算机可读介质上，或者可以具有一个或者多个信号的形式。这样的信号可以从因特网网站上下载得到，或者在载体信号上提供，或者以任何其他形式提供。
例如，图7示出了可以实现根据本公开的方法的计算处理设备。该计算处理设备传统上包括处理器710和以存储器720形式的计算机程序产品或者计算机可读介质。存储器720可以是诸如闪存、EEPROM(电可擦除可编程只读存储器)、EPROM、硬盘或者ROM之类的电子存储器。存储器720具有用于执行上述方法中的任何方法步骤的程序代码731的存储空间730。例如，用于程序代码的存储空间730可以包括分别用于实现上面的方法中的各种步骤的各个程序代码731。这些程序代码可以从一个或者多个计算机程序产品中读出或者写入到这一个或者多个计算机程序产品中。这些计算机程序产品包括诸如硬盘，紧致盘(CD)、存储卡或者软盘之类的程序代码载体。这样的计算机程序产品通常为如参考图8所述的便携式或者固定存储单元。该存储单元可以具有与图7的计算处理设备中的存储器720类似布置的存储段、存储空间等。程序代码可以例如以适当形式进行压缩。通常，存储单元包括计算机可读代码731’，即可以由例如诸如710之类的处理器读取的代码，这些代码当由计算处理设备运行时，导致该计算处理设备执行上面所描述的方法中的各个步骤。
本文中所称的“一个实施例”、“实施例”或者“一个或者多个实施例”意味着，结合实施例描述的特定特征、结构或者特性包括在本公开的至少一个实施例 中。此外，请注意，这里“在一个实施例中”的词语例子不一定全指同一个实施例。
在此处所提供的说明书中，说明了大量具体细节。然而，能够理解，本公开的实施例可以在没有这些具体细节的情况下被实践。在一些实例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。
在权利要求中，不应将位于括号之间的任何参考符号构造成对权利要求的限制。单词“包含”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本公开可以借助于包括有若干不同元件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中，这些装置中的若干个可以是通过同一个硬件项来具体体现。单词第一、第二、以及第三等的使用不表示任何顺序。可将这些单词解释为名称。
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 (20)

  1. 一种状态参量处理方法，应用于接入网网元，其特征在于，包括：
    接收核心网网元发送的目标信息，获取所述目标信息包括的第一状态参量；所述第一状态参量包括数据流标识以及第一序列号；所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；
    根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量；所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；
    更新与所述目标数据流对应的目标无线承载的第三状态参量；所述第三状态参量指示所述目标无线承载所承载的数据包的计数值。
  2. 根据权利要求1所述的状态参量处理方法，其特征在于，所述方法包括：
    通过空口承载发送第二数据包时，携带第二序列号；所述第二序列号为所述空口承载对应的所述第三状态参量确定的。
  3. 根据权利要求1所述的状态参量处理方法，其特征在于，所述根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量，包括：
    将所述第一序列号作为所述数据流标识对应的目标数据流的第二状态参量；或
    对所述第一序列号加一处理，或将所述第一序列号加一处理后与预设序列号阈值取模处理，得到所述数据流标识对应的目标数据流的第二状态参量。
  4. 根据权利要求1所述的状态参量处理方法，其特征在于，所述获取所述目标信息中携带的第一状态参量，包括：
    获取所述目标信息中携带的数据流标识与初始第一序列号，将所述数据流标识作为所述第一状态参量的所述数据流标识，并将所述初始第一序列号作为所述第一状态参量的所述第一序列号，或者
    获取所述目标信息中携带的数据流标识与第四序列号，将所述数据流标识作为所述第一状态参量的所述数据流标识，并根据所述第四序列号与第三状态参量生成所述第一状态参量的所述第一序列号。
  5. 根据权利要求1所述的状态参量处理方法，其特征在于，所述目标信息包括所述第一数据包或同步信息。
  6. 根据权利要求1所述的状态参量处理方法，其特征在于，所述更新与所述目标数据流对应的目标无线承载的第三状态参量，包括：
    确定与所述目标数据流对应的目标无线承载；
    对所述目标无线承载所承载的数据流所对应的第二状态参量进行求和处理，得到所述目标无线承载的第三状态参量。
  7. 一种状态参量处理方法，应用于核心网网元，其特征在于，包括：
    向接入网网元发送目标信息，在所述目标信息中携带第一数据包的第一状态参量，使所述接入网网元根据第一序列号，生成数据流标识对应的目标数据流的第二状态参量，并更新与所述目标数据流对应的目标无线承载的第三状态参量；
    其中，所述第一状态参量包括所述第一数据包对应的数据流标识以及第一序列号；所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；
    所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；所述第三状态参量指示所述目标无线承载所承载的数据包数量。
  8. 根据权利要求7所述的状态参量处理方法，其特征在于，所述目标信息包括所述第一数据包或同步信息。
  9. 一种网络设备，其特征在于，包括存储器，收发机，处理器：
    存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
    接收核心网网元发送的目标信息，获取所述目标信息包括的第一状态参量；所述第一状态参量包括数据流标识以及第一序列号；所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；
    根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量；所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；
    更新与所述目标数据流对应的目标无线承载的第三状态参量；所述第三状态参量指示所述目标无线承载所承载的数据包的计数值。
  10. 根据权利要求9所述的网络设备，其特征在于，所述处理器用于：
    通过空口承载发送第二数据包时，携带第二序列号；所述第二序列号为 所述空口承载对应的所述第三状态参量确定的。
  11. 根据权利要求9所述的网络设备，其特征在于，所述根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量，包括：
    将所述第一序列号作为所述数据流标识对应的目标数据流的第二状态参量；或
    对所述第一序列号加一处理，或将所述第一序列号加一处理后与预设序列号阈值取模处理，得到所述数据流标识对应的目标数据流的第二状态参量。
  12. 根据权利要求9所述的网络设备，其特征在于，所述获取所述目标信息中携带的第一状态参量，包括：
    获取所述目标信息中携带的数据流标识与初始第一序列号，将所述数据流标识作为所述第一状态参量的所述数据流标识，并将所述初始第一序列号作为所述第一状态参量的所述第一序列号，或者
    获取所述目标信息中携带的数据流标识与第四序列号，将所述数据流标识作为所述第一状态参量的所述数据流标识，并根据所述第四序列号与第三状态参量生成所述第一状态参量的所述第一序列号。
  13. 根据权利要求9所述的网络设备，其特征在于，所述目标信息包括所述第一数据包或同步信息。
  14. 根据权利要求9所述的网络设备，其特征在于，所述更新与所述目标数据流对应的目标无线承载的第三状态参量，包括：
    确定与所述目标数据流对应的目标无线承载；
    对所述目标无线承载所承载的数据流所对应的第二状态参量进行求和处理，得到所述目标无线承载的第三状态参量。
  15. 一种网络设备，其特征在于，包括存储器，收发机，处理器：
    存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
    向接入网网元发送目标信息，在所述目标信息中携带第一数据包的第一状态参量，使所述接入网网元根据第一序列号，生成数据流标识对应的目标数据流的第二状态参量，并更新与所述目标数据流对应的目标无线承载的第三状态参量；
    其中，所述第一状态参量包括所述第一数据包对应的所述数据流标识以 及所述第一序列号；所述第一序列号为核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；
    所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；所述第三状态参量指示所述目标无线承载所承载的数据包数量。
  16. 根据权利要求15所述的网络设备，其特征在于，所述目标信息包括所述第一数据包或同步信息。
  17. 一种状态参量处理装置，应用于接入网网元，其特征在于，包括：
    信息接收模块，用于接收核心网网元发送的目标信息，获取所述目标信息包括的第一状态参量；所述第一状态参量包括数据流标识以及第一序列号；所述第一序列号为所述核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；
    参量生成模块，用于根据所述第一序列号，生成数据流标识对应的目标数据流的第二状态参量；所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；
    参量更新模块，用于更新与所述目标数据流对应的目标无线承载的第三状态参量；所述第三状态参量指示所述目标无线承载所承载的数据包的计数值。
  18. 一种状态参量处理装置，应用于核心网网元，其特征在于，包括：
    信息发送模块，用于向接入网网元发送目标信息，在所述目标信息中携带第一数据包的第一状态参量，使所述接入网网元根据第一序列号，生成数据流标识对应的目标数据流的第二状态参量，并更新与所述目标数据流对应的目标无线承载的第三状态参量；
    其中，所述第一状态参量包括所述第一数据包对应的所述数据流标识以及所述第一序列号；所述第一序列号为核心网网元经由目标传输接口传输第一数据包的传输次序对应的序列号；
    所述第二状态参量指示所述核心网网元所传输的所述目标数据流的数据包的计数值；所述第三状态参量指示所述目标无线承载所承载的数据包数量。
  19. 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8中任一项所述的方法。
  20. 一种计算机程序，包括计算机可读代码，当所述计算机可读代码在计算处理设备上运行时，导致所述计算处理设备执行根据权利要求1至8任一项所述的方法。
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