CN114793342A

CN114793342A - Data processing method, device, base station, network equipment and storage medium

Info

Publication number: CN114793342A
Application number: CN202110096966.XA
Authority: CN
Inventors: 王胡成
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2022-07-26
Also published as: WO2022156384A1

Abstract

The embodiment of the application provides a data processing method, a device, a base station, a network device and a storage medium, wherein the method comprises the following steps: after a satellite is used for providing return transmission for a Protocol Data Unit (PDU) session according to the indication or the determination of a session management function network element (SMF), sending a return transmission request message; receiving a backhaul response message in response to the backhaul request message; and determining whether the requirement of a preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, if not, sending a notification message carrying the value of the CN PDB to an SMF serving the PDU session, wherein the notification message is used for notifying the SMF to request a policy control function network element PCF to update the QoS parameter according to the CN PDB. And the return delay detection is carried out according to the change of the return connection, and the QoS modification is triggered in time, so that the service interruption is avoided.

Description

Data processing method, device, base station, network equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a data processing method and apparatus, a base station, a network device, and a storage medium.

Background

Currently, a fifth generation mobile communication technology 5G (five-generation) Network supports satellite backhaul, and a 5G base station gnb (next generation node b) may be connected to a 5G Core Network 5GC (five-generation Core Network) through a satellite link.

The gNB is connected with the 5GC from a Low Earth orbit satellite (LEO SAT) through a Low Earth orbit satellite (5 GC), and the data return time delay of the return network is changed due to the change of links among the satellites. Such variations in latency may result in current QoS parameters not being met. The prior art relies on the user Plane function network element upf (user Plane function) to periodically check the time delay of the user Plane connection, and then report the time delay to the session Management function network element smf (session Management function) through an event. The method can not detect the time delay change between the gNB and the UPF in time, so that the gNB still schedules air interface transmission according to the original packet time delay budget AN PDB, thus the end-to-end QoS of the QoS flow can not be ensured, and even service interruption is caused.

Disclosure of Invention

Embodiments of the present application provide a data processing method, an apparatus, a base station, a network device, and a storage medium, so as to solve the problem that the prior art cannot adjust QoS parameters according to changes in a backhaul network.

In order to solve the above problem, in particular, the embodiment of the present application provides the following technical solutions:

in a first aspect, an embodiment of the present application provides a data processing method applied to a base station, including:

after a session management function network element SMF indicates or determines to use a satellite to provide a return for a protocol data unit PDU session, a return request message is sent;

receiving a backhaul response message in response to the backhaul request message;

and determining whether the requirement of a preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, if not, sending a notification message carrying the value of the CN PDB to an SMF serving the PDU session, wherein the notification message is used for notifying the SMF to request a policy control function network element PCF to update the QoS parameter according to the CN PDB.

Optionally, the determining to use a satellite to provide backhaul for the PDU session includes:

determining to use a satellite to provide a return transmission for the PDU session according to the transport layer connection information of the N3 tunnel of the PDU session;

or, according to the transmission layer connection information of the user plane connection of the PDU conversation, determining to use a satellite to provide a return transmission for the PDU conversation.

Optionally, the core network packet delay budget CN PDB carried in the backhaul response message is determined by sending a backhaul request message on a preset tunnel based on a general packet radio service GPRS tunneling protocol GTP-U and according to the time of the received backhaul response message;

or, sending an Internet control message protocol ICMP packet to an opposite end UPF of a general packet radio service GPRS tunneling protocol GTP-U path, and determining according to the receiving time of the ICMP packet.

Optionally, determining whether the requirement of the preset delay budget PDB is met according to the packet delay budget CN PDB of the core network or the backhaul delay carried in the backhaul response message includes:

and judging whether the return delay or the CN PDB is greater than or equal to the packet delay budget PDB of the QoS flow or not according to the return delay or the CN PDB, and if so, determining that the requirement of the packet delay budget PDB of the QoS flow is not met.

In a second aspect, an embodiment of the present application further provides a data processing method, which is applied to a session management function network element SMF, and includes:

receiving a notification message sent by a base station, wherein the notification message carries a value of a packet delay budget CN PDB of a fixed core network; the notification message is sent by the base station when the base station determines that the CN PDB does not meet the requirement of a preset time delay budget PDB;

and requesting a policy control function network element PCF to update the QoS parameters according to the CN PDB according to the notification message.

Optionally, the CN PDB is determined by sending a backhaul request message on a preset tunnel based on a general packet radio service GPRS tunneling protocol GTP-U and according to a time of the received backhaul response message;

In a fourth aspect, an embodiment of the present application further provides a data processing method, which is applied to a session management function network element SMF, and includes:

when the satellite is determined to be used as a return transmission, an indication message is sent to a base station or a user plane function network element UPF, wherein the indication message is used for indicating the base station or the UPF to send a return transmission request message;

and determining whether the requirement of the preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, and if not, requesting the policy control function network element PCF to update the QoS parameter according to the CN PDB.

Optionally, the determining the satellite as a backhaul includes:

determining to use a satellite to provide a backhaul for the PDU session based on transport layer connection information of the N3 tunnel of the protocol data unit PDU session;

In a fifth aspect, an embodiment of the present application further provides a data processing method, which is applied to a user plane function network element UPF, and includes:

after receiving an indication message sent by a session management function network element (SMF), sending a return request message;

and the SMF determines whether the requirement of a preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, and if not, requests the policy control function network element PCF to update the QoS parameter according to the CN PDB.

Optionally, the SMF determines whether a requirement of a preset delay budget PDB is met according to the packet delay budget CN PDB of the core network or the backhaul delay carried in the backhaul response message, including:

In a sixth aspect, an embodiment of the present application further provides a data processing apparatus, which is applied to a base station, and includes:

the first sending module is used for sending a return request message after a satellite is used for providing a return for a Protocol Data Unit (PDU) session according to the indication or the determination of a session management function network element (SMF);

a first receiving module, configured to receive a backhaul response message in response to the backhaul request message;

a first processing module, configured to determine whether a requirement of a preset delay budget PDB is met according to a core network packet delay budget CN PDB or a backhaul delay carried in the backhaul response message, and if not, send a notification message carrying a value of the CN PDB to an SMF serving the PDU session, where the notification message is used to notify the SMF to request a policy control function network element PCF to update a QoS parameter according to the CN PDB.

In a seventh aspect, an embodiment of the present application further provides a data processing apparatus, which is applied to a session management function network element SMF, and includes:

a second receiving module, configured to receive a notification message sent by a base station, where the notification message carries a value of a packet delay budget CN PDB of a fixed core network; the notification message is sent by the base station when the base station determines that the CN PDB does not meet the requirement of the preset time delay budget PDB;

and the second processing module is used for requesting the policy control function network element PCF to update the QoS parameters according to the CN PDB according to the notification message.

In an eighth aspect, an embodiment of the present application further provides a data processing apparatus, which is applied to a session management function network element SMF, and includes:

a second sending module, configured to send an indication message to a base station or a user plane function network element UPF after determining that the satellite is used as a backhaul, where the indication message is used to indicate the base station or the UPF to send a backhaul request message;

a third receiving module, configured to receive a backhaul response message in response to the backhaul request message;

and the third processing module is used for determining whether the requirement of the preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, and if the requirement is not met, the policy control function network element PCF is requested to update the QoS parameter according to the CN PDB.

In a ninth aspect, an embodiment of the present application further provides a data processing apparatus, which is applied to a user plane function network element UPF, and includes:

a third sending module, configured to send a backhaul request message after receiving an indication message sent by the session management function network element SMF;

a fourth receiving module, configured to receive a backhaul response message in response to the backhaul request message;

and the SMF determines whether the requirement of a preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the backhaul delay carried in the backhaul response message, and if not, requests the policy control function network element PCF to update the QoS parameter according to the CN PDB.

In a tenth aspect, an embodiment of the present application further provides a base station, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the following steps:

after a satellite is used for providing return transmission for a Protocol Data Unit (PDU) session according to the indication or the determination of a session management function network element (SMF), sending a return transmission request message;

and determining whether the requirement of a preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, if not, sending a notification message carrying the value of the CN PDB to the SMF serving the PDU session, wherein the notification message is used for notifying the SMF to request a policy control function network element PCF to update the QoS parameter according to the CN PDB.

In an eleventh aspect, an embodiment of the present application further provides a session management function network element SMF, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the following steps when executing the computer program:

receiving a notification message sent by a base station, wherein the notification message carries a value of a packet delay budget CN PDB of a fixed core network; the notification message is sent by the base station when the base station determines that the CN PDB does not meet the requirement of the preset time delay budget PDB;

In a twelfth aspect, an embodiment of the present application further provides a session management function network element SMF, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the following steps when executing the computer program:

when the satellite is determined to be used as a return transmission, an indication message is sent to a base station or a user plane function network element UPF, and the indication message is used for indicating the base station or the UPF to send a return transmission request message;

In a thirteenth aspect, an embodiment of the present application further provides a user plane function network element UPF, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the following steps when executing the computer program:

In a fourteenth aspect, the present embodiments further provide a processor-readable storage medium, where a computer program is stored, where the computer program is configured to enable the processor to execute the steps of the data processing method according to the first aspect, the second aspect, the third aspect, or the fourth aspect.

According to the data processing method, the data processing device, the base station, the network equipment and the storage medium, after a session management function network element SMF indicates or determines that a satellite is used for providing a return transmission for a protocol data unit PDU session, a return transmission request message is sent, a return transmission response message responding to the return transmission request message is received, whether the requirement of a preset delay budget PDB is met or not is determined according to a core network packet delay budget CN PDB or a return transmission delay carried in the return transmission response message, if the requirement is not met, a notification message carrying a CN PDB value is sent to the SMF of a service PDU session, and the notification message is used for notifying a SMF request policy control function network element PCF to update QoS parameters according to the CN PDB. The embodiment of the application carries out backhaul delay detection according to the change of backhaul connection and triggers QoS modification in time, thereby avoiding service interruption.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following descriptions are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of the deployment of a 5G network when the satellite is acting as a backhaul;

FIG. 2 is a flow diagram of UPF and SMF backhaul connection;

FIG. 3 is a flow diagram of another UPF and SMF backhaul connection;

fig. 4 is a flowchart of steps applied to a base station according to an embodiment of the present application;

fig. 5 is a flowchart of steps applied to a session management function network element SMF according to an embodiment of the present application;

fig. 6 is a flowchart of another step applied to a session management function network element SMF according to an embodiment of the present application;

fig. 7 is a flowchart of steps applied to a user plane function network element UPF according to an embodiment of the present application;

fig. 8 is a schematic diagram illustrating an SMF notifying the gNB of enabling delay detection according to an embodiment of the present application;

fig. 9 is a schematic diagram of detecting a user plane delay by a gNB according to an embodiment of the present application;

fig. 10 is a schematic diagram of an SMF detecting user plane delay according to an embodiment of the present application;

fig. 11 is a block diagram of a data processing apparatus applied to a base station according to an embodiment of the present application;

fig. 12 is a block diagram of a data processing apparatus applied to a session management function network element SMF according to an embodiment of the present application;

fig. 13 is a block diagram of another data processing apparatus applied to a session management function network element SMF according to an embodiment of the present application;

fig. 14 is a block diagram of a data processing apparatus applied to a user plane function network element UPF according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a base station according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of a session management function network element SMF according to an embodiment of the present application;

fig. 17 is a schematic structural diagram of a user plane function network element UPF according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that, as shown in fig. 1, when a satellite is used as a backhaul, the 5G network is deployed in a manner that an NG interface is established between the 5G base station gNB and the access and Mobility Management function unit amf (access and Mobility Management function) through a satellite link. In this mode, the satellite link remains transparent to the protocols of the mobile communication network. Since the gNB may be mobile, e.g., onboard a vehicle, airborne, etc., it may be the case that the gNB connects to different satellites at different times, when a new transport layer connection is required between the gNB and the 5 GC. Even if the gNB is still, the movement of a non-terrestrial stationary orbit satellite such as low Earth orbit leo (low Earth orbit)/medium Earth orbit meo (medium Earth orbit) may change the satellite serving the gNB, and change the backhaul connection.

In the prior art, as shown in fig. 2, the user Plane function upf (user Plane function) may notify the session Management function smf (session Management function) of the QoS limit (i.e. delay) of the GTP-U path in the N4 association establishment/modification process. The UPF reports the QoS limit to the SMF through the N4 Report procedure. The SMF performs UPF selection and QoS parameter adjustment according to QoS limitation.

The related process is as follows:

notification of QoS Limitation during Association Setup at N4

As shown in fig. 3, the UPF may also report QoS limit on its GTP-U path to the SMF when it establishes an N4 association with the SMF. The QoS permission is notified in the N4 Association Update procedure.

The prior art relies on the UPF to periodically check the latency of the user plane connection and then report to the SMF via an event. The method cannot detect the time delay change between the gNB and the UPF in time, so that the gNB still schedules air interface transmission according to the original AN PDB, the end-to-end QoS of the QoS flow cannot be guaranteed, and even service interruption is caused. In order to solve the problem, an embodiment of the present application provides a data processing method, where after indicating or determining to use a satellite to provide a backhaul for a protocol data unit PDU session according to a session management function network element SMF, a backhaul request message is sent; receiving a backhaul response message in response to the backhaul request message; and determining whether the requirement of a preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, if not, sending a notification message carrying the value of the CN PDB to an SMF serving the PDU session, wherein the notification message is used for notifying the SMF to request a policy control function network element PCF to update the QoS parameter according to the CN PDB. The embodiment of the application carries out return delay detection according to the change of return connection and triggers QoS modification in time, thereby avoiding service interruption.

The data processing method, apparatus, base station, network device, and storage medium provided by the present application are explained and illustrated in detail by specific embodiments below.

It should be noted that, in the following description, since the method and the apparatus are based on the same application concept, and the principles of solving the problems of the method and the apparatus are similar, the implementation of the apparatus and the method can be mutually referred, and repeated details are not repeated.

In addition, it should be noted that the technical solutions provided in the embodiments of the present application may be applicable to various systems, especially 5G systems. For example, suitable systems may be global system for mobile communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) systems, Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, long term evolution (long term evolution) systems, LTE-a systems, universal mobile systems (universal mobile telecommunications systems, UMTS), universal internet Access (world interoperability for microwave Access (WiMAX) systems, New Radio interface (NR) systems, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5GS), and the like.

The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, e.g., a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN), and may exchange language and/or data with the Radio Access Network. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station (remote station), an access point (access point), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), and a user device (user device), which is not limited in this embodiment. Since the terminal device forms a network capable of supporting communication with other network devices (e.g., core network device, access network device (i.e., base station)), the terminal device is also considered as a network device in the present invention.

The network device related to the embodiment of the present application may be a base station, where the base station may include multiple cells providing services for a terminal, and may also be a CU (Central Unit) or a DU (Distributed Unit). A network device may also be referred to as an access point or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames with Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may also be a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may also be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) System, a 5G Base Station (gNB) in a 5G network architecture (next generation System), or may also be a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico), which is not limited in the embodiments of the present application. In some network configurations, a network device may include Centralized Unit (CU) nodes and Distributed Unit (DU) nodes, which may also be geographically separated.

Furthermore, it should be understood that the term "and/or" in the embodiments of the present application describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The present application is specifically explained below.

As shown in fig. 4, a flowchart of steps of a data processing method applied to a base station according to an embodiment of the present application is provided, where the method includes the following steps:

step 101: after a satellite is used for providing return transmission for a Protocol Data Unit (PDU) session according to the indication or the determination of a session management function network element (SMF), sending a return transmission request message;

in this step, it should be noted that, in the PDU session establishment process, the SMF may determine that the user plane of the PDU session passes through satellite backhaul according to the gNB information of the serving terminal device UE, such as gNB ID, backhaul type indication, and the like; or, after the PDU session is established, determining that the user plane of the PDU session passes back through the satellite according to the tunnel information (IP address) of the downlink N3 tunnel allocated by the gNB for the PDU session. When the SMF determines that the PDU session passes through the satellite backhaul, a Notification control mechanism can be started for QoS flow in the PDU session, and/or a base station can be notified to send a backhaul request message.

In this step, optionally, after the gNB determines that the service satellite changes, backhaul delay detection between the UPFs is performed, and specifically, the gNB sends a backhaul request message to the connected UPF or the configured gateway node to determine a core network packet delay budget CN PDB for each QoS flow in the PDU session.

Step 102: receiving a backhaul response message in response to the backhaul request message;

in this step, the base station receives a backhaul response message of the core network in response to the backhaul request message sent. The method aims to detect the user plane time delay of the PDU conversation so as to determine the core network packet time delay budget CN PDB of each QoS flow in the PDU conversation. Wherein the UE initiates PDU session establishment and the gbb serving the UE is connected to the 5GC via satellite backhaul.

Step 103: and determining whether the requirement of a preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, if not, sending a notification message carrying the value of the CN PDB to an SMF serving the PDU session, wherein the notification message is used for notifying the SMF to request a policy control function network element PCF to update the QoS parameter according to the CN PDB.

In this step, it is determined whether the packet delay budget PDB requirement of each QoS flow of the service quality flows of the base station can be met according to the packet delay budget CN PDB of the core network or the backhaul delay carried in the backhaul response message, and if not, a notification message carrying a value of the CN PDB is sent to the session management function network element SMF serving the PDU session, where the notification message is used to notify the SMF to request the policy control function network element PCF to update the QoS parameters of each QoS flow according to the CN PDB. The core network packet delay budget CN PDB carried in the return response message is determined according to the time of the received return response message or the time of sending an Internet control message protocol ICMP packet to an opposite end UPF of a general packet radio service GPRS tunnel protocol GTP-U path, and the time of sending the ICMP packet is determined according to the receiving time of the ICMP packet.

In this step, it should be noted that, the gNB determines the user plane CN PDB according to the detected backhaul delay, and then determines whether the PDB requirement of the packet delay budget of each QoS flow can be met according to the CN PDB, and if not, sends a notification message to the SMF. The notification message carries the CN PDB, so that the SMF reports the CN PDB to the PCF according to the message and triggers the flow of updating the QoS parameters of each QoS flow. The QoS parameters include at least one of:

5QI；

PDB；

GFBR，Guaranteed Flow Bit Rate；

MFBR，Maximum Flow Bit Rate。

according to the data processing method provided by the embodiment of the application, after a session management function network element SMF indicates or determines to use a satellite to provide a return for a protocol data unit PDU session, a return request message is sent; receiving a backhaul response message in response to the backhaul request message; and determining whether the requirement of a preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, if not, sending a notification message carrying the value of the CN PDB to an SMF serving the PDU session, wherein the notification message is used for notifying the SMF to request a policy control function network element PCF to update the QoS parameter according to the CN PDB. The embodiment of the application carries out return delay detection according to the change of return connection and triggers QoS modification in time, thereby avoiding service interruption.

Based on the content of the foregoing embodiment, in this embodiment, the determining to use a satellite to provide backhaul for the PDU session includes:

In this embodiment, optionally, during the process of establishing the PDU session by the UE, the base station determines that the PDU session uses the satellite as backhaul according to the transport layer connection of the N3 tunnel of the PDU session, or after the backhaul connection is switched, the base station determines that the PDU session uses the satellite as backhaul according to the transport layer connection information of the transport layer connection of the PDU session user plane connection. The transport layer connection information may be an IP address or port of a base station connected to the transport layer, or a radio transmission technology.

Based on the content of the foregoing embodiment, in this embodiment, the core network packet delay budget CN PDB carried in the backhaul response message is determined by sending a backhaul request message on a preset tunnel based on a general packet radio service GPRS tunneling protocol GTP-U and according to the time of the received backhaul response message;

In this embodiment, it should be noted that, when performing backhaul delay probing, the base station sends a backhaul request message on a preset tunnel based on a general packet radio service GPRS tunneling protocol GTP-U, for example, sends an echo request (echo request) packet on an N3 tunnel (N3 tunnel), and then calculates a core network packet delay budget CN PDB according to a time when the echo response (echo response) is received.

In this embodiment, it should be noted that the base station and the base station may detect the backhaul delay by other means without depending on the GTP-U channel management message when performing backhaul delay detection. For example, the gNB uses non-third generation partnership project 3GPP means to detect the return delay, for example, to send an Internet control message protocol ICMP packet to the opposite end UPF of the GTP-U path to detect the round trip delay on the transmission path. Specifically, a core network packet delay budget CN PDB is determined according to the receiving time of the ICMP packet.

Based on the content of the foregoing embodiment, in this embodiment, determining whether the requirement of the preset delay budget PDB is met according to the packet delay budget CN PDB of the core network or the backhaul delay carried in the backhaul response message includes:

In this embodiment, it should be noted that, the packet delay budget PDB of QoS flow is CN PDB + AN PDB (AN PDB is not 0), so that it may be determined whether the backhaul delay or CN PDB is greater than or equal to the packet delay budget PDB of QoS flow according to the backhaul delay or CN PDB, and if so, it is determined that the packet delay budget PDB requirement of QoS flow is not satisfied.

As shown in fig. 5, a flowchart of steps of a data processing method applied to a session management function network element SMF according to an embodiment of the present application is provided, where the method includes the following steps:

step 201: receiving a notification message sent by a base station, wherein the notification message carries a value of a packet delay budget CN PDB of a fixed core network; the notification message is sent by the base station when the base station determines that the CN PDB does not meet the requirement of a preset time delay budget PDB;

in this step, when the base station determines that the CN PDB does not meet the requirement of the packet delay budget PDB for each QoS flow between the base station and the UPF, the base station sends a notification message carrying the value of the CN PDB to the SMF serving the session management function network element of the PDU session. The CN PDB is determined by performing return delay detection between the base station and a user plane function network element UPF when the base station determines that a service satellite changes.

Step 202: and requesting a policy control function network element PCF to update the QoS parameters according to the CN PDB according to the notification message.

In this step, it should be noted that, after receiving the notification message sent by the base station, the SMF initiates an SM policy update process to request the PCF to update the QoS parameter of the QoS flow. Optionally, the PCF may need to negotiate with the application layer, and request the application function unit af (application function) to update its QoS requirement according to the delay characteristic of the transmission path. Specifically, the PCF updates the QoS parameters to adapt to the delay characteristics of the backhaul connection according to the QoS requirements of the application layer, and triggers the QoS parameter modification process.

According to the data processing method provided by the embodiment of the application, after a session management function network element (SMF) indicates or determines to use a satellite to provide a return for a Protocol Data Unit (PDU) session, a return request message is sent; receiving a backhaul response message in response to the backhaul request message; and determining whether the requirement of a preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, if not, sending a notification message carrying the value of the CN PDB to the SMF serving the PDU session, wherein the notification message is used for notifying the SMF to request a policy control function network element PCF to update the QoS parameter according to the CN PDB. The embodiment of the application carries out backhaul delay detection according to the change of backhaul connection and triggers QoS modification in time, thereby avoiding service interruption.

Based on the content of the foregoing embodiment, in this embodiment, the CN PDB is determined by sending a backhaul request message on a preset tunnel based on a general packet radio service GPRS tunneling protocol GTP-U and according to the time of the received backhaul response message;

In this embodiment, it should be noted that the base station and the method for performing backhaul delay detection may not rely on GTP-U channel management message, but use other means to detect backhaul delay. For example, the gNB uses non-third generation partnership project 3GPP means to detect the return delay, e.g. sending Internet control message protocol ICMP packets to the opposite end UPF of GTP-U path to detect the round trip delay on the transmission path. Specifically, a core network packet delay budget CN PDB is determined according to the receiving time of the ICMP packet.

As shown in fig. 6, a flowchart of steps of a data processing method applied to a session management function network element SMF according to an embodiment of the present application is provided, where the method includes the following steps:

step 301: when the satellite is determined to be used as a return transmission, an indication message is sent to a base station or a user plane function network element UPF, wherein the indication message is used for indicating the base station or the UPF to send a return transmission request message;

in this step, in the PDU session establishment process, the SMF may determine that the user plane of the PDU session passes through the satellite backhaul according to the gNB information of the serving terminal device UE, such as the gNB ID, backhaul type indication, and the like; or after the PDU session is established, determining that the user plane of the PDU session passes back through the satellite according to the tunnel information (IP address) of the downlink N3 tunnel allocated by the gNB for the PDU session. When the SMF determines that the PDU session passes through the satellite backhaul, a Notification control mechanism can be started for QoS flow in the PDU session, and/or a base station or a user plane function network element UPF is notified to send an indication message, wherein the indication message is used for indicating the base station or the UPF to send a backhaul request message.

Step 302: receiving a backhaul response message in response to the backhaul request message;

in this step, the SMF receives a backhaul response message of the core network in response to the backhaul request message sent. The method aims to detect the user plane time delay of the PDU conversation so as to determine the core network packet time delay budget CN PDB of each QoS flow in the PDU conversation. It should be noted that the SMF may instruct the base station to perform backhaul delay detection, and after the detection, the base station sends a notification message carrying the CN PDB value to the SMF. In addition, the SMF may also indicate to the UPF serving the PDU session, via the N4 interface, to probe for user plane path propagation delay and report the delay value. The UPF can perform time delay detection through an echo request/response process. Since the base station serves multiple PDU sessions, the SMF will indicate the transmission delay of its probe path for the UPFs serving different PDU sessions. Each UPF, after probing, reports its backhaul delay with the gNB to the SMF. The SMF further receives the CN PDB value or the return delay sent by the base station or the UPF, and determines the core network packet delay budget CN PDB.

Step 303: and determining whether the requirement of the preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, and if not, requesting the policy control function network element PCF to update the QoS parameter according to the CN PDB.

In this step, the SMF may determine the user plane CN PDB according to the detected backhaul delay, and then determine whether the packet delay budget PDB requirement of each QoS flow of the current QoS flow can be met according to the CN PDB, and if not, report the CN PDB to the PCF, and trigger the process of updating the QoS parameters of each QoS flow.

According to the data processing method provided by the embodiment of the application, after a session management function network element (SMF) indicates or determines to use a satellite to provide a return for a Protocol Data Unit (PDU) session, a return request message is sent; receiving a backhaul response message in response to the backhaul request message; and determining whether the requirement of a preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, if not, sending a notification message carrying the value of the CN PDB to an SMF serving the PDU session, wherein the notification message is used for notifying the SMF to request a policy control function network element PCF to update the QoS parameter according to the CN PDB. The embodiment of the application carries out backhaul delay detection according to the change of backhaul connection and triggers QoS modification in time, thereby avoiding service interruption.

Based on the content of the foregoing embodiment, in this embodiment, the determining a satellite as a backhaul includes:

determining to use a satellite to provide a backhaul for the PDU session according to transport layer connection information of an N3 tunnel of the protocol data unit PDU session;

or determining to use a satellite to provide return transmission for the PDU session according to the transport layer connection information of the user plane connection of the PDU session.

In this embodiment, optionally, during the process of establishing the PDU session by the UE, the base station determines that the PDU session uses the satellite as backhaul according to the transport layer connection of the N3 tunnel of the PDU session, or after the backhaul connection is switched, the base station determines that the PDU session uses the satellite as backhaul according to the transport layer connection of the PDU session user plane connection.

As shown in fig. 7, a flowchart of steps of a data processing method applied to a user plane function network element UPF provided in the embodiment of the present application is shown, where the method includes the following steps:

step 401: after receiving an indication message sent by a session management function network element SMF, sending a return request message;

in this step, it should be noted that, after receiving the indication message, which is sent by the SMF through the N4 interface and used for detecting the user plane path propagation delay, the UPF sends a backhaul request message.

Step 402: receiving a backhaul response message in response to the backhaul request message;

in this step, the UPF receives a backhaul response message of the core network responding to the backhaul request message sent. The method aims to detect the user plane time delay of the PDU conversation so as to determine the core network packet time delay budget CN PDB of each QoS flow in the PDU conversation.

Step 403: and the SMF determines whether the requirement of a preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, and if not, requests the policy control function network element PCF to update the QoS parameter according to the CN PDB.

In this step, the UPF sends the detected backhaul delay to the SMF, the SMF determines the user plane CN PDB according to the detected backhaul delay, and then determines whether the packet delay budget PDB requirement of each QoS flow of the current QoS flow can be met according to the CN PDB, and if not, reports the CN PDB to the PCF, and triggers the process of updating the QoS parameters of each QoS flow.

In the above steps 401 to 403, it can be understood that, the UPF performs the backhaul delay detection between the base station and the user plane function network element UPF according to the indication message sent by the SMF, and reports the backhaul delay between the base station and the UPF to the SMF.

According to the data processing method provided by the embodiment of the application, after a session management function network element SMF indicates or determines to use a satellite to provide a return for a protocol data unit PDU session, a return request message is sent; receiving a backhaul response message in response to the backhaul request message; and determining whether the requirement of a preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, if not, sending a notification message carrying the value of the CN PDB to the SMF serving the PDU session, wherein the notification message is used for notifying the SMF to request a policy control function network element PCF to update the QoS parameter according to the CN PDB. The embodiment of the application carries out return delay detection according to the change of return connection and triggers QoS modification in time, thereby avoiding service interruption.

Based on the content of the foregoing embodiment, in this embodiment, the determining, by the SMF, whether the requirement of a preset delay budget PDB is met according to the packet delay budget CN PDB of the core network or the backhaul delay carried in the backhaul response message includes:

and judging whether the return delay or the CN PDB is larger than or equal to the packet delay budget PDB of the QoS flow or not according to the return delay or the CN PDB, and if so, determining that the packet delay budget PDB requirement of the QoS flow is not met.

In this embodiment, the packet delay budget PDB of QoS flow is CN PDB + AN PDB (AN PDB is not 0), so the SMF may determine whether the backhaul delay or CN PDB is greater than or equal to the packet delay budget PDB of QoS flow according to the backhaul delay or CN PDB, and if so, determine that the packet delay budget PDB requirement of QoS flow is not satisfied.

The present application will be specifically described below with reference to specific examples.

The first embodiment:

in this embodiment, as shown in fig. 8, the SMF notifies the base station gNB to enable notification control and delay sounding. The method comprises the following steps:

UE initiates PDU session setup, with the serving UE's gNB connected to 5GC via satellite backhaul.

2. In the PDU session establishment process, the SMF may determine that the user plane of the PDU session is returned via the satellite according to the serving UE's gNB information, such as gNB ID, return type indication, etc.; or, after the PDU session is established, determining that the user plane of the PDU session passes back through the satellite according to the tunnel information (IP address) of the downlink N3 tunnel allocated by the gNB for the PDU session.

3. When the SMF determines that the PDU session passes back through the satellite, a Notification control mechanism can be started for QoS flow in the PDU session; and/or informing the base station to perform user plane delay detection for the PDU session and report to the SMF (referred to herein as notification mechanism).

And 4. the gNB starts delay detection for the user plane path of the PDU session, for example, sends an echo request packet on an N3 tunnel, and then calculates the user plane path delay according to the time when the echo response is received.

The second embodiment:

in this embodiment, as shown in fig. 9, the base station gNB detects the user plane delay through a GTP-U tunnel management message. The method comprises the following steps:

1. when a satellite serving the gNB is changed, the gNB needs to establish a connection to the control plane and the user plane of the 5GC through the new satellite.

And 2, after the gNB establishes a transport layer connection with the AMF, carrying out time delay detection again aiming at each user plane path of the gNB and the core network, namely each GTP-U path, namely sending an echo request packet and receiving echo response at each GTP-U path.

3. And calculating the transmission time delay of each GTP-U path according to the echo request/response. And determines the transmission delay as a new CN PDB. And the gNB judges whether to inform the SMF of the backhaul transmission delay or not.

4. For QoS flow with Notification control enabled, the gNB feeds back path transmission delay, namely the transmission delay of the GTP-U path, to the SMF serving the QoS flow.

For the PDU session with the Notification mechanism enabled, the gNB reports the transmission delay variation of the backhaul path to the SMF.

And 5, after receiving the transmission delay of the transmission path fed back by the gNB, the SMF initiates an SM policy updating process and requests the PCF to update the QoS parameter of the QoS flow.

The PCF may need to negotiate with the application layer requesting the AF to update its QoS requirements according to the delay characteristics of the transmission path.

And 7, the PCF updates the QoS parameters to adapt to the time delay characteristics of the backhaul connection according to the QoS requirements of the application layer, and triggers the QoS parameter modification process.

The third embodiment:

in this embodiment, as shown in fig. 10, the base station gNB detects the user plane delay by a non-3 GPP means (e.g. ICMP message). Specifically, in the second embodiment, the gNB may use other means to detect the delay without depending on the GTP-U tunnel management message when performing the delay detection, that is, in step 2 of the second embodiment, the gNB uses a non-3 GPP means to detect the delay, for example, sending an ICMP packet to the opposite end UPF of the GTP-U path to detect the round trip delay on the transmission path. Wherein, the gNB determines that the CN PDB is half of the detected round trip delay, and the subsequent steps are the same as the second embodiment.

The fourth embodiment:

in this embodiment, it should be noted that, as shown in fig. 11, the step of the SMF detecting the user plane delay includes:

2 due to the change of the transmission path, the gNB initiates a path switching process for each UE.

And 3, the SMF determines whether to perform delay re-detection on the N3 tunnel of the PDU session again according to the tunnel information (gNB user plane IP address) of the downlink N3 tunnel of the PDU session carried in the path switching request message of each UE, for example, if it is determined that the gNB uses satellite backhaul according to the gNB user plane IP address, the delay re-detection is enabled.

The SMF indicates to the UPF serving the PDU session, over the N4 interface, to probe for user plane path propagation delay and report the delay value. The UPF can perform time delay detection through an echo request/response process.

Since the gNB serves multiple PDU sessions, the SMF will indicate the transmission delay of its probe path for the UPFs serving different PDU sessions.

5. Each UPF reports the transmission delay between it and the gNB to the SMF.

And 6, when the SMF determines that the transmission delay before the UPF of the gNB cannot meet the QoS requirements of certain QoS flows in the PDU session, initiating an SM policy modification process aiming at the QoS flows.

And 8, the PCF updates the QoS parameters according to the QoS requirement of the application layer to adapt to the time delay characteristic of the backhaul connection. And when the SMF sends the updated QoS parameters downwards, determining the transmission delay as a new CN PDB and sending the new CN PDB to the gNB. A

According to the data processing method provided by the embodiment of the application, after a base station gNB determines that a service satellite changes, transmission delay detection to UPF is executed or a core network is informed to execute the transmission delay detection between the gNB and the UPF, the gNB determines that the detected transmission delay is determined to be CN PDB corresponding to 5QI of QoS flow of the gNB, and the CN PDB is used for calculating AN PDB corresponding to 5QI of the QoS flow. Wherein the 5QI may be a QoS parameter received from a core network before a serving satellite is transformed; or new QoS parameters received from the core network after a change in the serving satellite. Before determining the CN PDB, reporting transmission delay to a core network, triggering a QOS modification process or receiving a QOS parameter issued by the core network and/or a new CN PDB, wherein the new CN PDB is determined by the SMF according to the transmission delay between the gNB and the UPF. The embodiment of the application can accurately set the CN PDB and trigger the QoS modification in time to avoid service interruption.

In addition, as shown in fig. 11, a block diagram of a data processing apparatus applied to a base station in the embodiment of the present application is shown, where the apparatus includes:

a first sending module 11, configured to send a backhaul request message after indicating or determining that a satellite is used to provide backhaul for a protocol data unit PDU session according to a session management function network element SMF;

a first receiving module 12, configured to receive a backhaul response message in response to the backhaul request message;

the first processing module 13 is configured to determine whether a preset delay budget PDB requirement is met or not according to a core network packet delay budget CN PDB or a backhaul delay carried in the backhaul response message, and if not, send a notification message carrying a value of the CN PDB to an SMF serving the PDU session, where the notification message is used to notify the SMF to request the policy control function network element PCF to update a QoS parameter according to the CN PDB.

or, sending an Internet control message protocol ICMP packet to an opposite end UPF of a general packet radio service GPRS tunnel protocol GTP-U path, and determining according to the receiving time of the ICMP packet.

It should be noted that, the present apparatus can implement all the method steps of the data processing method embodiment applied to the base station and achieve the same technical effect, and details are not repeated herein.

In addition, as shown in fig. 12, a block diagram of a data processing apparatus applied to a session management function network element SMF according to an embodiment of the present application is provided, where the apparatus includes:

a second receiving module 21, configured to receive a notification message sent by a base station, where the notification message carries a value of a packet delay budget CN PDB of a fixed core network; the notification message is sent by the base station when the base station determines that the CN PDB does not meet the requirement of a preset time delay budget PDB;

and a second processing module 22, configured to request, according to the notification message, the policy control function network element PCF to update the QoS parameter according to the CN PDB.

Based on the content of the foregoing embodiment, in this embodiment, the CN PDB is determined by sending a backhaul request message on a preset tunnel based on a general packet radio service GPRS tunneling protocol GTP-U and according to a time of receiving a backhaul response message;

It should be noted that, the apparatus can implement all the method steps of the embodiment of the data processing method applied to the base station and can achieve the same technical effect, and details are not repeated herein.

In addition, as shown in fig. 13, a block diagram of a data processing apparatus applied to a session management function network element SMF according to an embodiment of the present application is provided, where the apparatus includes:

a second sending module 31, configured to send an indication message to a base station or a user plane function network element UPF after determining that the satellite serves as a backhaul, where the indication message is used to indicate the base station or the UPF to send a backhaul request message;

a third receiving module 32, configured to receive a backhaul response message in response to the backhaul request message;

the third processing module 33 is configured to determine whether the requirement of the preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the backhaul delay carried in the backhaul response message, and if not, request the policy control function network element PCF to update the QoS parameter according to the CN PDB.

In addition, as shown in fig. 14, a block diagram of a data processing apparatus applied to a user plane function network element UPF according to an embodiment of the present application is provided, where the apparatus includes:

a third sending module 41, configured to send a backhaul request message after receiving the indication message sent by the session management function network element SMF;

a fourth receiving module 42, configured to receive a backhaul response message in response to the backhaul request message;

a fourth processing module 43, configured to send the backhaul response message to the SMF, where the SMF determines, according to a core network packet delay budget CN PDB or backhaul delay carried in the backhaul response message, whether a requirement of a preset delay budget PDB is met, and if the requirement is not met, requests the policy control function network element PCF to update a QoS parameter according to the CN PDB.

Fig. 15 is a schematic structural diagram of a base station according to an embodiment of the present application, which includes a memory 1520, a transceiver 1500, and a processor 1510.

In fig. 15, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by a processor 1510 and various circuits represented by a memory 1520 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1500 may be a number of elements including a transmitter and receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 1510 is responsible for managing the bus architecture and general processing, and the memory 1520 may store data used by the processor 1510 in performing operations.

The processor 1510 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

A memory 1520 for storing a computer program; a transceiver 1500 for transceiving data under the control of the processor; a processor 1510 for reading the computer program in the memory and performing the following operations:

It should be noted that the base station provided in the embodiment of the present application can implement all method steps of the data processing method embodiment applied to the base station and can achieve the same technical effect, and details are not described herein again.

Fig. 16 is a schematic structural diagram of a session management function network element SMF according to an embodiment of the present application, and includes a memory 1620, a transceiver 1600, and a processor 1610.

In fig. 16, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 1610, and various circuits, represented by the memory 1620, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1600 may be a number of elements including a transmitter and receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 1610 is responsible for managing the bus architecture and general processing, and the memory 1620 may store data used by the processor 1610 in performing operations.

The processor 1610 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

A memory 1620 for storing computer programs; a transceiver 1600 for transceiving data under the control of the processor; a processor 1610 configured to read the computer program in the memory and perform the following operations:

The following operations are also performed: when the satellite is determined to be used as a return transmission, an indication message is sent to a base station or a user plane function network element UPF, and the indication message is used for indicating the base station or the UPF to send a return transmission request message;

It should be noted that the session management function network element SMF provided in the embodiment of the present application can implement all method steps of the data processing method embodiment applied to the base station and can achieve the same technical effect, and details are not described herein.

Fig. 17 is a schematic structural diagram of a user plane functional network element UPF according to an embodiment of the present application, and includes a memory 1720, a transceiver 1700, and a processor 1710.

In fig. 17, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by a processor 1710 and various circuits represented by a memory 1720 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1700 may be a number of elements including a transmitter and receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 1710 is responsible for managing the bus architecture and general processing, and the memory 1720 may store data used by the processor 1710 in performing operations.

The processor 1710 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

A memory 1720 for storing a computer program; a transceiver 1700 for transceiving data under the control of the processor; a processor 1710 for reading the computer program in the memory and performing the following operations:

and the SMF determines whether the requirement of a preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the backhaul delay carried in the backhaul response message, and if the requirement is not met, the strategy control function network element PCF is requested to update the QoS parameter according to the CN PDB.

Based on the content of the foregoing embodiment, in this embodiment, the determining, by the SMF, whether the requirement of the preset delay budget PDB is met according to the packet delay budget CN PDB of the core network or the backhaul delay carried in the backhaul response message includes:

It should be noted that the user plane function network element UPF provided in the embodiment of the present application can implement all the method steps of the data processing method embodiment applied to the base station and can achieve the same technical effect, and details are not described herein again.

On the other hand, the embodiment of the present application further provides a processor-readable storage medium, where a computer program is stored, and the computer program is used to enable the processor to execute the method described in the foregoing embodiment.

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 memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

As seen from the above embodiments, a processor-readable storage medium stores a computer program for causing the processor to execute the steps of the above data processing method.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A data processing method is applied to a base station and comprises the following steps:

2. The data processing method of claim 1, wherein determining to use a satellite to provide backhaul for the PDU session comprises:

3. The data processing method according to claim 1, wherein the core network packet delay budget CN PDB carried in the backhaul response message is determined according to the time of the received backhaul response message by sending a backhaul request message on a preset tunnel based on a general packet radio service GPRS tunneling protocol GTP-U;

4. The data processing method according to claim 1, wherein determining whether the requirement of the preset delay budget PDB is met according to the packet delay budget CN PDB of the core network or the backhaul delay carried in the backhaul response message comprises:

5. A data processing method is applied to a Session Management Function (SMF), and comprises the following steps:

6. The data processing method according to claim 5, wherein the CN PDB is determined based on a time when the backhaul request message is sent on a preset tunnel based on a general packet radio service GPRS tunneling protocol GTP-U, and the time when the backhaul response message is received;

7. A data processing method is applied to a Session Management Function (SMF), and comprises the following steps:

and determining whether the requirement of the preset delay budget PDB is met or not according to the core network packet delay budget CN PDB or the return delay carried in the return response message, and if the requirement is not met, requesting a policy control function network element PCF to update the QoS parameter according to the CN PDB.

8. The data processing method of claim 7, wherein determining the satellite as a backhaul comprises:

9. A data processing method is applied to a user plane function network element UPF, and comprises the following steps:

10. The data processing method according to claim 9, wherein the SMF determines whether a requirement of a preset delay budget PDB is met according to a core network packet delay budget CN PDB or a backhaul delay carried in the backhaul response message, and includes:

11. A data processing apparatus applied to a base station, comprising:

the first sending module is used for sending a return request message after a satellite is indicated or determined to be used for providing return for a Protocol Data Unit (PDU) session according to the session management function network element (SMF);

12. A data processing apparatus, applied to a session management function network element SMF, comprising:

13. A data processing apparatus, applied to a session management function network element SMF, comprising:

a second sending module, configured to send an indication message to a base station or a user plane function network element UPF after determining that the satellite serves as a backhaul, where the indication message is used to indicate the base station or the UPF to send a backhaul request message;

14. A data processing apparatus, applied to a user plane function network element UPF, comprising:

and the fourth processing module is configured to send the backhaul response message to the SMF, where the SMF determines whether a requirement of a preset delay budget PDB is met or not according to a core network packet delay budget CN PDB or backhaul delay carried in the backhaul response message, and if the requirement is not met, requests the policy control function network element PCF to update a QoS parameter according to the CN PDB.

15. A base station comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program performs the steps of:

16. A session management function network element SMF, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program to perform the steps of:

17. A session management function network element SMF, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program performs the steps of:

18. A user plane function network element UPF, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the following steps when executing the computer program:

19. A non-transitory computer readable storage medium, having stored thereon a computer program, characterized in that the program, when being executed by a processor, implements the steps of the data processing method according to any one of claims 1 to 4, or performs the steps of the data processing method according to any one of claims 5 or 6, or performs the steps of the data processing method according to any one of claims 7 or 8, or performs the steps of the data processing method according to any one of claims 9 or 10.