CN113630902B

CN113630902B - Data packet transmission method based on network service quality and related equipment

Info

Publication number: CN113630902B
Application number: CN202110956447.6A
Authority: CN
Inventors: 罗海燕; 戴明增; 卓义斌; 唐廷芳
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2023-04-28
Anticipated expiration: 2041-08-19
Also published as: WO2023019895A1; CN113630902A

Abstract

The application provides a data packet transmission method based on network service quality and related equipment, wherein in the process of data packet transmission between a first network node and a second network node, the second network node determines QoS parameters and second channel information of a data packet to be transmitted according to a mapping relation between first IP packet header information (such as a local IP address of the first network node and second IP packet header information) and QoS information sent by a third network node; the first network node determines the second channel information of the data packet to be transmitted according to the mapping relation between the second channel information and QoS flow identification and other information which are transmitted after the third network node and/or the second network node are constructed, so that the first/second network node transmits the data packet to be transmitted to the opposite side according to the obtained QoS parameters and the second channel information, the consistency of the end-to-end QoS requirements is met, and the workload of increasing the function configuration of the core network is avoided because the mapping relation is not required to be constructed by the core network.

Description

Data packet transmission method based on network service quality and related equipment

Technical Field

The present disclosure relates generally to the field of wireless communications, and more particularly, to a data packet transmission and related devices based on network quality of service.

Background

In recent years, in order to meet the requirements of various emerging services on wireless short-range communication technologies in terms of low time delay, high reliability, precise synchronization, high concurrency, information security and the like in scene applications such as intelligent automobiles, intelligent houses, intelligent terminals, intelligent manufacturing and the like, a new generation of wireless short-range communication air interface technical standard CCSA TC10 'wireless short-range communication vehicle-mounted air interface technical requirements and test methods' is designed, and an industry popularization alliance-star flash alliance (Sparklink) is built. In practical applications, a first network Node (e.g., UE, or a T-Node defined by Sparklink) performs packet transmission through a second network Node (e.g., TNAP, or a G-Node defined by Sparklink), a third network Node (e.g., a Trusted Non-3GPP gateway function (Trusted Non-3GPP Gateway Function,TNGF), and a 5G (fifth Generation) core network.

For the Sparklink user plane protocol stack in the 5G communication network structure, reference is generally made to a user plane protocol stack accessed by trusted non-3GPP (3 rd Generation Partnership Project, third generation partnership project), for example, the non-3GPP access layer protocol is directly replaced by the Sparklink access layer, so as to obtain two user plane protocol stacks as shown in fig. 1a and fig. 1b, so that in the uplink data packet/downlink data packet transmission application of the user equipment UE, the end-to-end QoS (Quality of Service ) management can be achieved according to the two user plane protocol stacks, and the QoS requirement of the corresponding application service can be satisfied.

In order to reduce the header overhead, GRE (Generic Routing Encapsulation ) between the first network node and the third network node, inner IP, IPSec protocol stack, may also be replaced by GTP-U (GPRS Tunnel Protocol-User, user plane GPRS tunneling protocol), UDP (User Datagram Protocol ). When the GRE, inner IP, IP sec protocol is employed, an end-to-end IPSec sub-security tunnel (IPSec Child Security Association) is established between the first network node and the third network node. When GTP-U and UDP protocol are adopted, the first network node and the third network node directly establish an end-to-end GTP-U tunnel.

However, in the current application of the user plane protocol stack, since the user plane protocol layer between the first network node and the third network node is directly connected from end to end, the second network node cannot determine the QoS requirement of the data packet transmitted through the IPSec sub-security channel or the GTP-U tunnel, which easily causes that the processing of the data packet by the second network node cannot meet the actual QoS requirement, and affects the efficiency and reliability of the data packet transmission.

Disclosure of Invention

In view of this, the present application provides a method for transmitting data packets based on network service quality, the method comprising:

Receiving flow mapping information sent by a third network node; wherein, the flow mapping information comprises a first mapping relation between different first IP packet header information and different QoS information; the first IP packet header information comprises a local IP address of the first network node and second IP packet header information; the second IP header information includes a priority attribute value configured for a first channel between a first network node and the third network node; the QoS information comprises QoS parameters or QoS parameters and QoS identifications;

receiving a data packet to be transmitted, which is transmitted by the third network node;

obtaining second channel information and QoS parameters of the data packet to be sent according to the first mapping relation and the first IP packet header information of the data packet to be sent; the second channel information is used for identifying a second channel between the first network node and the second network node;

and transmitting the data packet to be transmitted to the corresponding first network node through a second channel corresponding to the second channel information of the data packet to be transmitted according to the QoS parameters of the data packet to be transmitted.

Optionally, the obtaining the second channel information and the QoS parameter of the data packet to be sent according to the first mapping relationship and the first IP packet header information of the data packet to be sent includes:

Determining a first identifier of a first network node according to a local IP address of the first network node in the first IP packet header information of the data packet to be sent; the first identifier is used for identifying each first network node accessing the second network node;

determining second channel information of a second channel between a first network node and a second network node with the first identifier, and acquiring a second mapping relation between the second channel information and second IP packet header information or QoS identifier;

obtaining QoS parameters or QoS parameters and QoS identifications of the data packet to be sent according to the first mapping relation and the first IP packet header information of the data packet to be sent;

and obtaining second channel information of the data packet to be sent according to the second mapping relation and second IP packet header information in the first IP packet header information of the data packet to be sent or the QoS identification.

Optionally, the obtaining the second mapping relationship between the second IP packet header information or the QoS identifier and the second channel information includes:

establishing a second mapping relation between second IP packet header information or QoS identification and second channel information;

or alternatively, the process may be performed,

and acquiring second mapping relation between second IP packet header information or QoS identification and second channel information included in the traffic mapping information.

Optionally, the determining the first identifier of the first network node according to the local IP address of the first network node in the first IP packet header information of the data packet to be sent includes:

receiving a first identifier of a first network node corresponding to a local IP address of the first network node sent by the third network node; or alternatively, the process may be performed,

determining the corresponding relation between the local IP addresses of the different first network nodes and the first identifications of the different first network nodes according to the historical data packets from the different first network nodes;

and obtaining a first identifier of the first network node according to the corresponding relation and the local IP address of the first network node in the first IP packet header information of the data packet to be sent.

The application also provides a data packet transmission method based on network service quality, which comprises the following steps:

obtaining a protocol data unit PDU session identifier, a QoS flow identifier and a QoS parameter of a data packet to be sent;

acquiring a third mapping relation containing the PDU session identifier; the third mapping relation is provided by a second network node accessed by the first network node and/or a third network node, and comprises the mapping relation among the PDU session identifier, the QoS flow identifier, the first channel information, the second IP packet header information and the second channel information; the first channel information is used for identifying a first channel between the first network node and the third network node; the second IP header information includes a priority attribute value configured for a first channel between the first network node and the third network node; the second channel information is used for identifying a second channel between the first network node and the second network node;

Obtaining second channel information of the data packet to be sent according to the QoS flow identifier of the data packet to be sent and the third mapping relation;

and transmitting the data packet to be transmitted to a second network node through a second channel corresponding to the second channel information of the data packet to be transmitted according to the QoS parameters of the data packet to be transmitted.

Optionally, the third mapping relationship includes a fourth mapping relationship and a second mapping relationship, where the fourth mapping relationship represents a mapping relationship among the PDU session identifier, the QoS flow identifier, the first channel information, and the second IP packet header information, or represents a mapping relationship among the PDU session identifier, the QoS flow identifier, the first channel information, the QoS identifier, and the second IP packet header information; the second mapping relation represents the mapping relation between the second channel information and the second IP packet header information or the QoS identifier;

the obtaining the third mapping relation containing the PDU session identifier includes:

receiving the fourth mapping relation which is sent by the third network node and contains the target PDU session identifier;

and receiving the second mapping relation sent by the second network node.

Optionally, the obtaining the second channel information of the data packet to be sent according to the QoS flow identifier of the data packet to be sent and the third mapping relationship includes:

based on the fourth mapping relation, obtaining first channel information and QoS identification corresponding to QoS flow identification of the data packet to be sent and/or second IP packet header information corresponding to the first channel information;

and determining the obtained second IP packet header information or second channel information mapped by the QoS identifier as second channel information of the data packet to be sent based on the second mapping relation.

Optionally, the obtaining a third mapping relationship including the PDU session identifier includes:

and receiving a third mapping relation which is sent by the third network node and contains the PDU session identifier of the data packet to be sent.

receiving a PDU session resource request message sent by a core network; the PDU session resource request message comprises a PDU session identifier, a QoS flow identifier and a QoS parameter;

obtaining a fourth mapping relation according to the QoS parameters; the fourth mapping relationship represents a mapping relationship among a PDU session identifier, a QoS flow identifier, first channel information and second IP packet header information, or represents a mapping relationship among the PDU session identifier, the QoS flow identifier, the QoS identifier, the first channel information and the second IP packet header information; the first channel information is used for identifying a first channel between a corresponding first network node and a third network node; the second IP header information includes a priority attribute value configured for a first channel between a first network node and the third network node;

And sending the fourth mapping relation to the corresponding first network node.

Optionally, the PDU session resource request message further comprises an N2 interface identification of the first network node, and the method further comprises:

obtaining a second mapping relation according to the fourth mapping relation and the N2 interface identifier of the first network node, and sending the second mapping relation to the corresponding first network node; the second mapping relation comprises a mapping relation between second channel information and second IP packet header information or QoS identification; the second channel information is used for identifying a second channel between the first network node and the second network node;

or alternatively, the process may be performed,

obtaining a third mapping relation according to the fourth mapping relation and the N2 interface identifier of the first network node, and sending the third mapping relation to the corresponding first network node; the third mapping relation comprises a PDU session identifier, a QoS flow identifier, first channel information, second IP packet header information and mapping relation between the second channel information; or a mapping relationship among PDU session identification, qoS flow identification, qoS identification, first channel information, second IP header information, and second channel information.

obtaining a first mapping relation according to the PDU session resource request message; the first mapping relation represents the mapping relation between different first IP packet header information and different QoS information, wherein the first IP packet header information comprises a local IP address of a first network node and second IP packet header information;

transmitting the first mapping relation to a second network node;

or alternatively;

acquiring a second mapping relation between the second channel information and second IP packet header information or QoS identification;

transmitting the second mapping relation and the first mapping relation to a second network node; or, obtaining a fifth mapping relation from the first mapping relation and the second mapping relation, and sending the fifth mapping relation to a second network node; wherein, the fifth mapping relation represents the mapping relation among the first IP packet header information, qoS information and second channel information; the QoS information includes QoS parameters, or QoS parameters and QoS identities.

The application also provides a data packet transmission device based on network service quality, which comprises:

The data receiving module is used for receiving the flow mapping information sent by the third network node and the data packet to be sent; wherein, the flow mapping information comprises a fourth mapping relation between different first IP packet header information and different QoS information; the first IP packet header information comprises a local IP address of a corresponding first network node accessed to the third network node and second IP packet header information; the second IP packet header information is used for identifying a first channel determination between a corresponding first network node and the third network node; the QoS information comprises QoS parameters and QoS identifications;

the transmission control information obtaining module is used for obtaining second channel information and QoS parameters of the data packet to be sent according to the fourth mapping relation and the first IP packet header information of the data packet to be sent; the second channel information is used for identifying a second channel between the first network node and the second network node;

and the QoS control module is used for sending the data packet to be sent to the corresponding second network node through a second channel corresponding to the second channel information of the data packet to be sent according to the QoS parameter of the data packet to be sent.

the PDU conversation resource information acquisition module is used for acquiring a PDU conversation identifier, a QoS stream identifier and a QoS parameter of a data packet to be transmitted;

a third mapping relation obtaining module, configured to obtain a first mapping relation including the PDU session identifier; the third mapping relation is provided by a second network node accessed by the first network node and/or a third network node, and comprises the mapping relation among the PDU session identifier, the QoS flow identifier, the first channel information, the second IP packet header information and the second channel information; the first channel information is used for identifying a first channel between the first network node and the third network node; the second IP header information includes a priority attribute value configured for a first channel between the first network node and the third network node; the second channel information is used for identifying a second channel between the first network node and the second network node;

the second channel information determining module is configured to obtain second channel information of the data packet to be sent according to the QoS flow identifier of the data packet to be sent and the third mapping relationship;

And the QoS control module is used for sending the data packet to be sent to a second network node through a second channel corresponding to the second channel information of the data packet to be sent according to the QoS parameter of the data packet to be sent.

the PDU conversation request message receiving module is used for receiving a PDU conversation resource request message sent by a core network; the PDU session resource request message comprises a PDU session identifier, a QoS flow identifier and a QoS parameter;

a fourth mapping relation obtaining module, configured to obtain a fourth mapping relation according to the QoS parameter; the fourth mapping relationship represents a mapping relationship among a PDU session identifier, a QoS flow identifier, first channel information and second IP packet header information, or represents a mapping relationship among the PDU session identifier, the QoS flow identifier, the QoS identifier, the first channel information and the second IP packet header information; the first channel information is used to identify a first channel between the respective first network node and the third network node; the second IP header information includes a priority attribute value configured for a first channel between a first network node and the third network node;

And the fourth mapping relation sending module is used for sending the fourth mapping relation to the corresponding first network node.

The application also proposes a computer device comprising: a communication module, at least one memory, and at least one processor, wherein:

the memory is used for storing a first program for realizing the data packet transmission method based on network service quality, which is executed by the second network node; or storing a second program implementing a network quality of service based data packet transmission method performed by the first network node as above; or storing a third program implementing a network quality of service based data packet transmission method performed by the third network node as above;

the processor is used for loading and executing the first program stored in the memory to realize the data packet transmission method based on the network service quality, which is executed by the second network node; or loading and executing a second program stored in the memory to realize the data packet transmission method based on the network service quality, which is executed by the first network node; or loading and executing the third program stored in the memory to realize the data packet transmission method based on the network service quality, which is executed by the third network node.

The application also proposes a computer readable storage medium on which a computer program can be stored, which can be invoked and loaded by a processor comprised by each node, to implement the network service quality-based data packet transmission method described in the above-mentioned corresponding node-side embodiment.

As can be seen, the present application provides a data packet transmission method based on network service quality and related equipment, in the process of transmitting a data packet between a first network node and a second network node, the second network node determines QoS parameters and second channel information of a data packet to be transmitted according to a mapping relationship between first IP packet header information (such as a local IP address of the first network node and second IP packet header information) and QoS information sent by a third network node; the first network node determines the second channel information of the data packet to be transmitted according to the mapping relation between the second channel information and QoS flow identification and other information which are transmitted after the third network node and/or the second network node are constructed, so that the first/second network node transmits the data packet to be transmitted to the opposite side according to the obtained QoS parameters and the second channel information, the consistency of the end-to-end QoS requirements is met, and the workload of increasing the function configuration of the core network is avoided because the mapping relation is not required to be constructed by the core network.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings may be obtained according to the provided drawings without inventive effort to a person skilled in the art.

FIG. 1a is a schematic diagram of an alternative architecture of a Sparklink user plane protocol stack based on IPSec;

FIG. 1b is a schematic diagram of another alternative structure of a Sparklink user plane protocol stack based on IPSec;

FIG. 2 is a schematic diagram of an alternative system architecture suitable for a 5G fusion based remote IP data transfer application;

fig. 3 is a schematic diagram of a system architecture in an alternative application environment for implementing the network service quality-based data packet transmission method proposed in the present application;

fig. 4 is a flowchart of an alternative example of a network service quality based data packet transmission method implemented at the first network node side according to the present application;

FIG. 5 is a schematic diagram of an architecture of an alternative example of a system suitable for use in the network QoS-based packet transmission method presented herein;

Fig. 6 is a flowchart of another alternative example of a network service quality based data packet transmission method implemented at the first network node side according to the present application;

fig. 7 is a flowchart of an alternative example of a network service quality based data packet transmission method implemented at the second network node side according to the present application;

fig. 8 is a flowchart of another alternative example of a data packet transmission method based on network service quality implemented at the second network node side according to the present application;

fig. 9 is a signaling flow diagram of another alternative example of the network service quality-based data packet transmission method proposed in the present application;

fig. 10 is a signaling flow diagram of another alternative example of the network service quality-based data packet transmission method proposed in the present application;

fig. 11 is a signaling flow diagram of another alternative example of the network service quality-based data packet transmission method proposed in the present application;

fig. 12 is a schematic structural diagram of an alternative example of a packet transmission device based on network service quality according to the present application;

fig. 13 is a schematic structural diagram of another alternative example of a packet transmission device based on network service quality according to the present application;

Fig. 14 is a schematic structural diagram of another alternative example of a packet transmission device based on network service quality according to the present application;

fig. 15 is a schematic hardware structure of an alternative example of a computer device suitable for the network service quality-based data packet transmission method proposed in the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Today, in a remote IP Data transmission application based on 5G convergence, as shown in an application system architecture in fig. 2, a first Network Node (e.g. a managed Node T-Node included in a star-flash alliance Sparklink system, or may be a user equipment UE, a Node supporting Non-Access Stratum (NAS) messaging) is generally configured to establish a PDU (Protocol Data Unit ) session with a 5G core Network by accessing a second Network Node (e.g. a management Node G-Node included in the Sparklink system, a Trusted Non-3GPP Network Access Point TNAP (Trusted Non-3GPP Access Point), etc.), so as to implement communication with a Data Network (DN) through the core Network, which is not described in detail in this application.

In connection with the above IP data transmission application and description of the background section, for a user plane protocol stack in the current 5G network application, the first network node and the second network node may both access a third network node, such as a Trusted Non-3GPP gateway function (TNGF, trusted Non-3GPP Gateway Function) node, to implement different end-to-end connections, so that communication with a corresponding network element node in the 5G core network is implemented by the third network node, and in the user plane protocol stack structure shown in fig. 1a and 1b above, the first network node and the third network node may identify different IPSec child SAs of different PDU sessions, i.e. IPSec sub-security tunnels, through IP addresses of the Inner IP layer defined by 3GPP, and map at least one QoS (Quality of Service ) flow included in the PDU session to one IPSec sub-security tunnel for transmission.

It will be appreciated that if the GRE, inner IP, IPSec protocol layers in fig. 1a and fig. 1b are replaced with GTP-U, and the UDP protocol layers are replaced, the first network node and the third network node may identify different GTP-U tunnels of different PDU sessions through tunnel endpoint identifiers (TEIDs, tunnel Endpoint Identifier) carried in the GTP-U packet header and/or IP addresses carried in the IP packet header, and map at least one QoS flow contained in the PDU session into one GTP-U tunnel. In the following, for convenience in describing the packet transmission process, the IPSec sub-security channel and the GTP-U tunnel are collectively referred to as a first channel.

In practical application, taking a Sparklink user plane protocol stack as an example, after the first network node applies for building a PDU session to the core network, at least one QoS Flow Identifier (QFI) and a corresponding QoS rule included in the PDU session provided by the core network may be obtained, and if necessary, qoS parameters corresponding to the QFI, that is, qoS parameters of each QoS Flow, for example, guaranteed bit rate (GFBR, guaranteed Flow Bit Rate), maximum bit rate (MFBR, maximum Flow Bit Rate), packet delay budget (PDB, packet Delay Budget), packet error rate (PER, packet Error Rate), average window (average window), and the like may also be obtained. When the subsequent application layer of the first network node generates a data packet, after the first network node determines a PDU session associated with the data packet, the QFI associated with the data packet may be determined based on QoS rules, and the implementation process will not be described in detail in this application.

In order to identify different first channels, as in a user plane protocol stack based on the IPSec protocol, the third network node may allocate an Inner IP ADDRESS to the first network node, so that different first channels corresponding to the same PDU each have an up_ip_address and a corresponding differential service code point (Differentiated Services Code Point, DSCP), an implementation method is not described in detail in this application. It should be understood that in the user plane protocol stack based on the GTP-U protocol, the third network node may determine the IP address and TEID of the accessed first network node on the third network node side, so that it may be used as the first channel information later to represent the corresponding first channel.

Based on the above description, in a packet transfer application, as shown in fig. 1a and 1b, the user plane protocol layers, such as GRE/inner IP/IPSec or GTP-U/UDP, are both end-to-end communication protocol layers between the first network node and the third network node. The second network node can only acquire the IP header information (for example, DSCP value) of the received data packet, so as to process the data packet in the second channel (for example, sparklink air interface or other non-3GPP air interface), but cannot learn the specific QoS requirement of transmitting the data packet, and cannot realize precise QoS parameter control, so that the QoS process implemented by the second network node based on the DSCP value is inconsistent with the specific QoS requirement of the data packet, and cannot truly realize the end-to-end QoS requirement of the data packet transmission between the first network node and the third network node.

In order to solve the above problems, it is desirable that a sending end of a data packet, such as a first network node or a second network node, can accurately obtain specific QoS parameters corresponding to the data packet, thereby meeting QoS control requirements in different aspects. It is proposed that during registration of the first network node with the core network, a unified data management (UDM, unified Data Management) network element of the core network sends a mapping relation a between information such as 5QI (i.e. a QoS identifier defined by 5G)/DSCP/XQI (i.e. a QoS identifier defined by Sparklink)/QoS parameters, etc. to the third network node via an N2 interface through an access and mobility management function (AMF, access and Mobility Management Function) network element. The third network node sends the mapping relation a to the corresponding first network node and the second network node to which the first network node is connected, and fig. 3 illustrates an example in which the first network node is a T-node, the second network node is a G-node, and the third network node is a TNGF.

And then, the first network node applies for establishing PDU session to the core network, and the AMF network element in the core network still can send PDU session resource request information to the third network node through the N2 interface, and data such as the identification of the first network node at the N2 interface, PDU session identification, at least one QFI and corresponding QoS parameters thereof, and the mapping relation B between 5QI and QFI are sent to the third network node, so that the third network node can obtain the mapping relation C between QFI/DSCP/XQI according to the mapping relation A and the mapping relation B, and send the mapping relation C to the first network node and the second network node. Thus, when the first network node sends a data packet to the second network node, after the PDU session identifier and QFI corresponding to the data packet are obtained, corresponding DSCP and QoS parameters can be determined according to the mapping relation C; similarly, after the second network node receives the data packet to be sent from the core network, the QoS parameter mapped by the data packet to be sent can be obtained through the DSCP in the IP packet header information according to the received mapping relation C, so that the QoS control of the data packet transmission between the first network node and the second network node is realized.

In the whole data packet transmission process, the second network node can determine the QoS parameters of the data packet to be transmitted, which is transmitted through the first channel, by using the acquired mapping relation, so as to ensure that the QoS processing realized by the second network node is consistent with the QoS requirement of the data packet, and the end-to-end QoS processing is truly realized. However, in the process described above, in the PDU session application establishment process, since the AMF of the core network may send a PDU session establishment acceptance message to the first network node, which includes QoS parameters, the first network node may receive redundant QoS parameters, which causes a waste of storage resources; in addition, the AMF of the core network sends the mapping relation A to the third network node through the N2 interface, so that the traditional N2 interface message needs to be modified, the transmission of the mapping relation A can be supported, and the processing information is reduced; in addition, compared with the mapping relation contained in the traditional PDU session request message, the mapping relation A needs to be established by the core network UDM, so that the UDM processing function needs to be adjusted, the workload is increased, and the processing efficiency is reduced.

In order to solve the problem that the first network node receives the redundant QoS parameters, the present application provides corresponding indication information, that is, indicates whether to send the QoS parameters to the first network node, for example, in the implementation process, the AMF may be indicated not to feed back the QoS parameters to the first network node, so as to solve the redundant problem, but not solve the other technical problems described above.

In this regard, the present application expects to implement end-to-end QoS processing on the basis that no adjustment of the core network standard is required, for example, the determination of the mapping relationship between the DSCP value and the QoS parameter of the first channel is limited to the interior of the Sparklink, specifically, the third network node and/or the second network node may determine, according to the content contained in the PDU session resource request message fed back by the core network, a direct or indirect mapping relationship between different information required, and then send the mapping relationship to the first network node or the second network node, so that when a data packet to be sent is sent, it may determine, according to the mapping relationship, which second channel is required to perform QoS processing according to which QoS parameter between the first network node and the second network node, thereby meeting the data transmission requirement, ensuring the consistency of the QoS requirement from end to end, and improving the data transmission efficiency and reliability.

Therefore, in the data packet transmission method based on network service quality, the core network side does not need to establish a mapping relation between various information, and does not need to modify the core network function configuration code, so that the core network can still transmit according to the content of the traditional PDU session resource request message, does not need to transmit the mapping relation, and does not need to modify the N2 interface message between the core network and the third network node, so that the transmission of the mapping relation can be supported, thereby reducing the workload of technicians and realizing the efficient and reliable end-to-end QoS processing.

Based on the description of the foregoing embodiments, the 5G wireless network architecture, and the 5G air interface protocol stack structure, referring to fig. 3, in order to implement the system architecture schematic diagram of the application environment of the network service quality-based data packet transmission method, in the application environment, the constituent devices of the system architecture may include, but are not limited to: a first network node 100, a second network node 200, a third network node 300 and a core network 400, wherein:

the first network Node 100 may be a user equipment UE or other managed Node in a 5G wireless network application, for example, a managed Node in a star-flash alliance Sparklink system is denoted as a T Node (T-Node), and in different scenarios such as a smart car, a smart home, a smart terminal, and smart manufacturing, the device class represented by the first network Node may be different, for example, a smart phone, a tablet computer, a wearable device, a smart watch, an augmented Reality (Augmented Reality, AR) device, a Virtual Reality (VR) device, a vehicle-mounted device, a smart speaker, a robot, a desktop computer, etc., which may not limit the product type of the first network Node according to the application.

In practical applications, the first network node may access the 5G core network through the access network to implement communication with other data networks DN, and the entire communication architecture may be determined in conjunction with the 5G wireless network architecture, which is not described in detail in this application. In addition, for the application plane protocol followed by the first network node, the above description of the 5G air interface protocol stack structure may be combined, and the embodiments of the present application are not described in detail herein.

The second network nodes 200 may be relay devices in remote IP data transmission based on 5G convergence, in a Sparklink system, they may manage nodes, i.e., G-nodes, and since each second network Node 200 may access one or more first network nodes 100, the second network Node 200 may be used for communication between different first network nodes 100 responsible for coordinating access, and between the accessed first network Node 100 and itself (i.e., the second network Node 200), which will not be described in detail in the present application.

The Sparklink system generally comprises a Sparklink access layer, a basic service layer and a basic application layer. In some embodiments, the basic service layer may include a data transmission and adaptation layer (DTADP, data Transmission ADaPtation), or a data adaptation layer (TADP, transmission ADaPtation) for implementing data segmentation and reassembly, retransmission and flow control, encapsulation, etc.; in an actual application scenario, as shown in fig. 1b, data (such as an IP data packet) of a basic application layer may be transmitted to a Sparklink access layer through a basic service layer; or may be directly transmitted to the Sparklink access layer (as shown in fig. 1 a), which may be determined according to the scene requirement, which is not limited in this application.

In a wireless communication application, based on the wireless short-range communication air interface technology standard CCSA TC10, for an end-to-end data transmission channel between the first network node 100 and the second network node 200, the data transmission channel may be denoted as a second channel, such as a Sparklink air interface link, and a data packet to be sent between the two channels may be finally mapped to the Sparklink air interface for transmission, that is, mapped to a transmission channel (identified by TCID) of a DTADP layer or a logical channel (identified by LCID) of a Sparklink access layer.

The third network node 300 may be the above-mentioned TNGF node, etc., as shown in fig. 1a and fig. 1b, which may provide user plane and control plane protocols and functions, implement communication between the network node and the core network, and the implementation process may be determined by combining with the 5G air interface protocol stack structure, which is not described in detail in this application.

The core network 400 may be used to separate the control plane from the user plane, and may switch the call request or the data request sent by the user side to a different data network, so as to meet the service requirement. The core network of the present application may be a 5G core network (i.e. 5 GC), which mainly includes network elements of AMF, UPF and SMF (Session Management Function ), and the functions implemented by these core network elements are not described in detail in the present application.

In conjunction with the foregoing fig. 2, in different application scenarios, the core network 400 may access a corresponding data network DN to meet service requirements of the corresponding scenario, and the communication implementation process between the core network 400 and each data network DN is not described in detail in this application.

It should be understood that the system architecture shown in fig. 3 is not limited to the system of the application environment of the embodiment of the present application, and in practical application, the system architecture in different application environments includes more or fewer devices than those shown in fig. 3, or some devices are combined, which is not specifically recited herein.

In connection with the application environments described in the above embodiments, the implementation procedure of the network service quality-based data packet transmission method proposed in the present application may be described from different angles below, but is not limited to the implementation method described in the embodiments below. And only those portions of the drawings relating to the relevant invention are shown in the embodiments for convenience of description. Embodiments and features of embodiments in this application may be combined with each other without conflict.

Furthermore, unless the context clearly indicates otherwise, words such as "a," "an," "the," and/or "the" are not specific to the singular, but may include the plural. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus. The inclusion of an element defined by the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises an element.

Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, in the description of the embodiments of the present application, "plurality" means two or more than two. The following terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In addition, flowcharts are used in the present application to describe operations performed by the system according to the embodiments of the present application or its constituent device sides. It should be appreciated that the preceding or following operations are not necessarily performed in order precisely. Rather, the steps may be processed in reverse order or simultaneously. Also, other operations may be added to or removed from these processes, and are not described in detail herein.

Referring to fig. 4, a flowchart of an alternative example of a network service quality based packet transmission method implemented at the first network node side according to the present application is shown, that is, the network service quality based packet transmission method described in this embodiment may be executed by the first network node. The embodiment can be applied to Sparklink access, and at this time, the first network node can be a T node, and the second network node is a G node; the method can also be applied to trusted non-3 GPP access, wherein the first network node can be User Equipment (UE), and the second network node is TNAP. This may be determined according to the scenario requirements, and the present application does not limit the product type of the first network node. In addition, the embodiment of the application describes an implementation process of sending a data packet to a second network node by a first network node. As shown in fig. 4, the method may include, but is not limited to, the following steps:

step S11, PDU session identification, qoS flow identification and QoS parameters of a data packet to be sent are obtained;

in a 5G network application, in combination with the system architecture diagram of the core network through the second network node and the third network node of any one of the first network nodes shown in fig. 6, after any one of the first network nodes registers with the 5G core network through the second network node, the first network node may apply for establishing a PDU session to the 5G core network, after the 5G core network receives the PDU session establishment request, it may determine a PDU session identifier (for distinguishing different PDU sessions) of the PDU session that is applied for establishment, and information such as QoS flow identifiers (i.e. QFI) and QoS parameters (i.e. QoS parameters of QoS flow levels) that are respectively corresponding to one or more QoS flows included in the PDU session.

And then, forming a PDU session establishment acceptance message according to the obtained PDU session identifier, QFI and the corresponding QoS parameters. In this way, the first network node may receive a PDU session establishment accept message sent by the core network for which it applies for an established PDU session. As analyzed above, the PDU session identification of the PDU session establishment acceptance message may correspond to at least one QFI, which corresponds one-to-one to the QoS parameters, i.e., each QoS flow contained in the PDU session has a corresponding QFI and QoS parameters. Depending on the scenario requirements, the QoS parameters may include, but are not limited to, dynamic 5QI (i.e., 5G defined QoS identification) descriptors (QFI for dynamic allocation), non-dynamic 5QI descriptors (QFI for non-dynamic allocation), allocation and reservation priorities, GBR QoS flow information, reflection QoS attributes, additional QoS flow information, etc.

The NAS message, i.e. the PDU session establishment accept message, sent by the core network to the first network node includes at least one QFI and a corresponding QoS rule. When the QFI value is equal to the non-dynamic 5QI (i.e., the QoS parameter corresponding to 5QI can be found in the table specified by the protocol), the QoS parameter is not included in the NAS message (PDU session accept message). Therefore, after determining the QFI associated with the data packet to be sent, the first network node determines 5QI according to the QFI, then determines the corresponding QoS parameter according to the mapping relation between 5QI and QoS parameter specified by the protocol, that is, the first network node may obtain the PDU session identifier and QoS flow identifier of the data packet to be sent from the core network, and then determine the QoS parameter mapped by the QoS flow identifier according to the protocol rule.

In still other embodiments, if the core network determines that the QFI value is a dynamic 5QI (i.e., the corresponding 5QI cannot be found in the table corresponding to the protocol), the NAS message (PDU session accept message) includes QoS parameters, that is, the core network may send the PDU session identifier, the QoS flow identifier, and the corresponding QoS parameters to the first network node. The first network node may obtain, from the core network, a PDU session identifier, a QoS flow identifier, and a QoS parameter corresponding to a data packet to be sent, where the QoS parameter is a QoS parameter corresponding to a QFI associated with the data packet to be sent determined according to the QFI.

The Dynamic 5QI descriptor (Dynamic 5QI descriptor) may include parameters of different dimensions, such as priority, packet delay budget, packet error rate, 5QI, critical delay, average window, maximum data burst size, extended packet delay budget, downlink (relative to the data transmission direction of the first network node, i.e. the process of receiving the data packet by the first network node), uplink (i.e. the process of sending the data packet by the first network node), CN packet delay budget, and the like. The Non-Dynamic 5QI descriptor (Non-Dynamic 5QI descriptor) may include 5QI, priority, average window, maximum data burst size, downstream CN packet delay budget, upstream CN packet delay budget, etc. The GBR QoS flow information (GBR QoS Flow Information) may include a maximum flow bit rate downlink, a maximum flow bit rate uplink, a guaranteed flow bit rate downlink, a guaranteed flow bit rate uplink, a notification control, a maximum packet loss rate downlink, a maximum packet loss rate uplink, an alternative QoS parameter set list, etc. The QoS requirement content contained in the QoS parameters corresponding to each QoS flow may be determined according to the actual application requirement, which is not limited in this application.

In practical applications, the NAS message sent by the SMF of the core network to the first network node through the AMF may include, in addition to the PDU session identifier, at least one QFI and its corresponding QoS parameter (optional), a QoS rule (i.e. QoS rule) corresponding to the QFI, where the QoS rule may include a packet filtering device (Packet Filter Set). Wherein, for the IP type data packet, the parameters of the data packet filtering device may include, but are not limited to, the following parameter contents shown in table 1:

TABLE 1

For ethernet type packets, the parameters of the packet filtering device may include, but are not limited to, the following parameters shown in table 2:

TABLE 2

Based on the analysis, when the first network node obtains the application layer to generate the data packet to be sent, the first network node may determine the PDU session corresponding to the data packet to be sent, that is, determine the PDU session identifier of the data packet to be sent. And then, according to the mapping relation between the QoS rule corresponding to the PDU session and the QFI, the data packet to be sent is matched through the data packet filtering device, so as to obtain the QFI of the data packet to be sent, namely, which QoS flow of the PDU session the data packet to be sent belongs to is determined, and the QFI and the QoS parameter of the QoS flow are determined as the QoS flow identifier and the QoS parameter of the data packet to be sent. The specific acquisition procedure for QoS parameters for a data packet to be transmitted is as described above.

Step S12, a third mapping relation containing the PDU session identifier is obtained;

as described above, for each QoS flow included in the PDU session may be mapped to a different first channel, i.e. an IPSec sub-security channel or a GTP-U tunnel between the first network node and the third network node, so that the different first channels have QoS parameters of QoS flow levels of one or more QoS flows corresponding to each other, and thus determine a corresponding DSCP value (determined based on IPv4 (Internet Protocol Version, internet protocol version 4) protocol requirements), or determine a corresponding DSCP value and an IPv6flow label, and the implementation of the determination of the DSCP and IPv6flow labels is not described in detail in this application. In this embodiment of the present application, the DSCP value configured for the first channel, or the DSCP value and the IPv6flow label may be recorded as a priority attribute value, that is, for the first channel between the first network node and the third network node, a corresponding priority attribute value is configured and included in the IP header information of the data packet, which is at least a part of the content of the second IP header information of the data packet to be sent.

In order to improve the data transmission efficiency and reliability, and meet the QoS requirements of the QoS flow where the data packet to be transmitted is located, for example, the user plane protocol stack structure shown in fig. 1a or fig. 1b above is taken as an example, when the first network node sends the data packet to be transmitted to the second network node, it is necessary to determine the QFI and QoS parameters corresponding to the data packet to be transmitted first, and then determine which second channel (e.g. a transmission channel or a logical channel) the first network node transmits data through, so as to implement QoS processing of the first network node and the second network node, that is, end-to-end QoS processing.

In this regard, in the embodiment of the present application, in order to enable the first network node to determine, according to one or more contents in the received PDU session resource request message, a second channel for transmitting the mapping of the data packet to be sent to the second network node, the first network node may acquire a third mapping relationship determined for the PDU session (i.e. the PDU session mapped by the data packet to be sent) that is applied for establishment by the first network node.

It should be noted that, the third mapping relationship may be sent to the first network node after being established by the second network node and/or the third network node to which the first network node is connected, that is, the first network node may receive the third mapping relationship sent by the third network node, may also receive the third mapping relationship sent by the second network node, may also receive a part of the mapping relationship included in the third mapping relationship sent by the third network node, and receive another part of the mapping relationship included in the third mapping relationship sent by the second network node.

It can be seen that, for the third mapping relationship, the third mapping relationship may be determined by the third network node or the second network node and then sent to the first network node, or may be determined by the third network node and the second network node in cooperation and then sent to the first network node, instead of determining the mapping relationship by the core network and sending the mapping relationship to the third network node, without changing the protocol standard and the functional configuration of the core network.

The third mapping relationship may represent a mapping relationship between PDU session identifier, qoS flow identifier, qoS identifier, first channel information, second IP packet header information, second channel information, etc., and it should be noted that the mapping relationship between different information may be a direct mapping relationship or an indirect mapping relationship, which may be described in connection with corresponding analysis of the context, which is not described in detail herein. In some implementations, the third mapping relationship may also not include QoS identifiers, and the corresponding QoS identifiers may be determined according to information such as protocol rules and QoS flow identifiers when needed.

The first channel information may be in user plane protocol stacks with different structures, and may include different contents, for example, in a user plane protocol stack based on IPSec, the first channel information may include an IP ADDRESS of an inner IP layer allocated by a third network node for a first channel (i.e., an IPSec sub-security channel) between the third network node and the accessed first network node, i.e., an IP ADDRESS up_ip_address of the first network node on the user plane; in a user plane protocol stack based on GTP-U, the first channel information includes an IP address of the third network node side, a tunnel endpoint identifier TEID, and the like, and the content configuration implementation process of the first channel information is not described in detail in the present application. It can be seen that the first channel information may be used to identify a first channel between a first network node and a base station node.

For the above second IP header information, as in the above analysis, it may include a priority attribute value configured for the first channel between the first network node and the third network node, such as DSCP or (DSCP, IPv6 flow identity) configured for the first channel (e.g. the established IPSec sub-security channel or GTP-U tunnel), etc., which is often different for different first channels. For the second channel information mentioned above, the second channel information may include a second channel identifier of a second channel (such as a Sparklink air interface, a non-3 GPP air interface, etc. may be determined according to an Access network type) between the first network node and the second network node, where the second channel identifier may be different under different types of Access network types, and may be at least one of a transmission channel identifier TCID, a logical channel identifier LCID, and a WLAN (Wireless Local Area Network ) Access Class (AC).

In combination with the system architecture described in the system embodiment above, in the actual communication process, for example in the Sparklink system application, the first network node and the second network node may communicate through the Sparklink air interface, and the first network node may establish an end-to-end IPSec sub-security channel or GTP-U tunnel through the second network node and the third network node; for example, in non-3 GPP system applications, the first network node and the second network node may communicate through a non-3 GPP air interface (such as WLAN), and the first network node may establish an end-to-end IPSec sub-security channel with the third network node through the second network node, which is not described in detail in the implementation process of the present application.

In connection with the above description, the QoS flow identifier and the QoS identifier of the QoS flow may be a mapping relationship of 1:1 or N: 1. The mapping relationship between the QoS identifier (or QoS flow identifier) and the second IP packet header information may be 1:1 or n:1, which may be determined according to the mapping relationship between each QoS flow contained in the same PDU session and each first channel mapped to. For example, if N QoS flows are mapped to 1 first channel, then a mapping relationship of N:1 may be between the QoS identifier (or QoS flow identifier) and the second IP packet header information; if 1 QoS flow is mapped to 1 first channel, then the mapping relationship between the QoS identifier (or QoS flow identifier) and the second IP packet header information may be 1:1, which may be the case, and the specific mapping relationship between the two information is not limited in the present application.

Step S13, obtaining second channel information of the data packet to be transmitted according to QoS flow identification of the data packet to be transmitted and a third mapping relation;

after receiving the third mapping relation corresponding to the data packet to be sent, the first network node may query the third mapping relation according to the determined QoS flow identifier of the data packet to be sent, determine the first channel information and the first packet header information of the first channel mapped by the QoS flow with the QoS flow identifier, and determine the QoS identifier (e.g. XQI) mapped with the QoS Flow Identifier (QFI), and then obtain the second channel information corresponding to the determined QoS identifier and/or the second IP packet header information according to the mapping relation between the QoS identifier and/or the second IP packet header information and the second channel information, that is, the second channel information of the data packet to be sent.

Wherein, regarding the QoS identifier and/or the mapping relationship between the second IP packet header information and the second channel information may be determined by the third network node or the second network node, and the implementation process may refer to the description of the corresponding parts of the following embodiments.

Step S14, according to QoS parameters of the data packet to be sent, the data packet to be sent is sent to a second network node through a second channel corresponding to second channel information of the data packet to be sent.

In practical application, after the first network node obtains the QoS parameter of the data packet to be sent and transmits the data packet to be sent on which second channel, the first network node may perform flow control on the data packet to be sent according to the QoS parameter, and transmit the data packet to be sent to the second network node through the determined second channel (i.e. the air interface with the determined second channel information).

It should be understood that, before the data packet to be sent is transmitted to the second network node through the second channel, the data packet to be sent is generally encapsulated according to the obtained related information, so that the second network node can obtain the required information such as DSCP or dscp+ipv6 flow identifier from the IP packet header information of the received data packet, and forward the information to the third network node.

For example, for a user plane protocol stack based on IPSec, the first network node may add a GRE packet header in a packet header of a data packet to be sent, where the GRE packet header may include a QFI corresponding to the data packet to be sent, and then continuously encapsulate an Inner IP packet header, for example, write a source ADDRESS and a destination ADDRESS in the Inner IP packet header, where the source ADDRESS may be a ue_ip_address allocated to the first network node by the third network node after the first network node accesses the third network node, and the destination ADDRESS may be first channel information, that is, an up_ip_address allocated to the first network node for the first channel, and then continuously encapsulate the IPSec packet header and the IP packet header. The last encapsulated IP packet header includes an IP address of the first network node, for example, an intranet IP address or a local IP address obtained by the first network node, which may be used for identifying, by the second network node, an identifier (denoted as a first identifier) adopted by the corresponding first network node in the Sparklink or non-3GPP air interface based on the local IP address of the first network node, for example, a Sparklink identifier or a MAC address, so as to implement communication with the first network node according to the first identifier or the local IP address.

Then, in the Sparklink user plane protocol stack shown in fig. 1a, since the Sparklink air interface does not include the DTADP protocol layer, the first network node completes encapsulation of the IP layer, and the encapsulated IP data packet (i.e., the data packet to be sent) may be further written into the media access layer of the Sparklink for encapsulation, the determined second channel information, such as the second channel identifier, that is, the logical channel identifier LCID, is written into the media access layer packet header, and encapsulated into the Sparklink physical layer, and finally, the encapsulated data packet to be sent is sent to the second network node through the determined second channel (Sparklink air interface).

In the Sparklink user plane protocol stack shown in fig. 1b, since the Sparklink air interface includes the DTADP protocol layer, after the first network node encapsulates the DTADP protocol layer packet header, the first network node may continue to encapsulate the DTADP protocol layer packet header to make the packet header include second channel information such as TCID, and then perform Sparklink access layer (make the packet header include second channel identifier such as LCID) and physical layer encapsulation according to the above-described manner, and send the finally obtained encapsulated data packet to be sent to the second network node through the second channel.

It should be noted that, for the user plane protocol stack of other structures, after obtaining each information required for packaging the data packet to be sent, layer-by-layer packaging may be performed according to the user plane protocol stack, and the finally packaged data packet to be sent is sent to the second network node through the determined second channel, so that the implementation process is not described in detail in this application.

In summary, in this embodiment of the present application, when a data packet to be sent is generated for an application layer obtained by any first network node, a PDU session identifier of a PDU session corresponding to the data packet to be sent, a QoS flow identifier and a QoS parameter of a QoS flow corresponding to the data packet to be sent (the QoS parameter may be determined by the first network node or may be determined by a core network and then sent), and the third mapping relationship sent after the third network node and/or the second network node are established may also be received. In the whole realization process, the mapping relation is not required to be established by a core network, and is transmitted to a third network node through an N2 interface, so that the functional configuration of the core network is not required to be changed, the configuration workload of the core network is reduced, and the data transmission efficiency and reliability are improved.

Referring to fig. 6, a flowchart of another alternative example of the network service quality based data packet transmission method implemented at the first network node side according to the present application may be an alternative refinement implementation method of the network service quality based data packet transmission method described in the foregoing embodiment, but is not limited to this alternative refinement implementation method. The method may be performed by a first network node, as shown in fig. 6, and may comprise:

step S21, PDU session identification, qoS flow identification and QoS parameters of a data packet to be sent are obtained;

regarding the implementation method of step S21, reference may be made to the descriptions of the corresponding parts of the above embodiments, which are not repeated in this embodiment.

Step S22, receiving a fourth mapping relation sent by a third network node;

in conjunction with the description of the corresponding parts of the foregoing embodiments, in this embodiment of the present application, the third mapping relationship is divided into a fourth mapping relationship and a second mapping relationship, where the fourth mapping relationship may represent a mapping relationship between a PDU session identifier, a QoS flow identifier (i.e. one or more QFI), a QoS identifier, first channel information, and second IP packet header information, or represents a mapping relationship between a PDU session identifier, a QoS flow identifier, first channel information, and second IP packet header information. The fourth mapping relationship may be determined by the third network node according to information sent by the core network and then sent to the first network node. The second mapping relationship may represent a mapping relationship between the second channel information and the second IP packet header information and/or the QoS identifier, which may be determined by the second network node according to the information sent by the third network node and then sent to the first network node. The implementation method for determining the fourth mapping relationship by the third network node and the implementation method for determining the second mapping relationship by the second network node may refer to embodiments of a data packet transmission method based on network service quality described below from the corresponding node side, which are not described in detail herein.

Step S23, based on the fourth mapping relation, obtaining the first channel information, the second IP packet header information and the QoS identification corresponding to the QoS flow identification of the data packet to be transmitted;

in the process of PDU session application establishment, the core network may determine QoS flows included in the PDU session to be established, qoS flow identifiers and QoS parameters corresponding to the QoS flows, and the third network node may determine, according to the QoS parameters of the QoS flows, which first channel each QoS flow maps to, determine first channel information of each first channel, and may determine QoS identifiers corresponding to the QoS flow identifiers, which is not described in detail in the implementation process.

Based on this, after the first network node obtains the QoS flow identifier of a QoS flow of the PDU session mapped by the data packet to be sent, the fourth mapping relationship sent by the third network node may be queried, and the first channel information, the second IP packet header information and the QoS identifier corresponding to the data packet to be sent may be gradually analyzed and determined.

Step S24, receiving a second mapping relation sent by a second network node;

step S25, based on the second mapping relation, the second channel information mapped by the obtained second IP packet header information or QoS identification is determined as the second channel information of the data packet to be transmitted;

In combination with the description of the second mapping relationship, in practical application, for the second mapping relationship (that is, the second IP packet header information or QoS identifier that is represented by the second mapping relationship and maps with the second channel information) of different contents, whether the fourth mapping relationship includes the QoS identifier may be adapted to be adjusted, so as to ensure that the first network node can determine the second channel information of the data packet to be sent based on the fourth mapping relationship and the second mapping relationship.

Step S26, according to QoS parameters of the data packet to be sent, the data packet to be sent is sent to the second network node through the second channel corresponding to the second channel information of the data packet to be sent.

Regarding how the first network node encapsulates the data packet according to the obtained information and the user plane protocol stack, and then sends the finally encapsulated data packet to be sent to the second network node through the second channel, reference may be made to the description of the corresponding parts of the above embodiments, which are not described in detail herein.

In summary, in the embodiment of the present application, when the first network node needs to send the data packet to be sent to the second network node, the first network node may obtain the second IP packet header information or the QoS identifier corresponding to the data packet to be sent according to the PDU session identifier, the QoS flow identifier, the second IP packet header information and/or the fourth mapping relationship between QoS identifiers (whether QoS identifiers are included and whether the second mapping relationship is consistent with QoS identifiers) provided by the third network node. And then, determining second channel information corresponding to the data packet to be transmitted, such as a TCID/LCID and other second channel identifiers, according to the corresponding second IP packet header information or the second mapping relation between the QoS identifier and the second channel information provided by the second network node, thereby determining which second channel the first network node passes through according to what QoS parameters, and transmitting the packaged data packet to be transmitted to the second network node, and realizing QoS control between the first network node and the second network node.

Based on the data packet transmission method based on network service quality described in the above embodiment, in practical application, because the relative position relationship between the first network node and the second network node will change, and the signal coverage area of the second network node is limited, in combination with the mobility characteristics of the network node, when the first network node a moves from the second network node B currently accessed to the coverage area of the second network node C, and the second network node B and the second network node C are connected to the same third network node, taking a Sparklink system as an example, the first network node a is connected to the third network node through the second network node B, and the identifier of the first network node a in Sparklink communication can be sent to the third network node; after the first network node a accesses the second network node C, the identifier of the first network node a in the Sparklink communication can be sent to the third network node through the second network node C, and at this time, the third network node can learn that the first network node a accessed by the second network node C is the first network node a accessed by the second network node.

Based on this, the traffic mapping information sent by the third network node to the second network node C may include the mapping relationship between the second IP packet header information and the QoS information as described above, and may further include, as required, an air interface identifier of the first network node a in Sparklink (i.e., an identifier adopted by the first network node a and the second network node C when they communicate through Sparklink), where after, in connection with the foregoing description of the embodiment, the second network node C may obtain the third mapping relationship, and send the third mapping relationship to the first network node a, where the implementation process is not repeated.

For the case that the second network node B and the second network node C are connected to different third network nodes, for example, the second network node B is connected to the third network node 1, the second network node B is connected to the third network node 2, the first network node a may send the identifier of the second network node B in the Sparklink and the identifier of the first network node a in the Sparklink to the third network node 2, so that the third network node 2 sends a message to other surrounding third network nodes according to the obtained relationship between the second network node and the first network node, and inquires whether the second network node B is connected to the surrounding third network nodes, so as to obtain the context information of the corresponding first network node a, for example, the context information of the corresponding first network node a is obtained, for example, the corresponding mapping relationship sent by the third network node 1 to the first network node a/the second network node B may be combined with the description of the corresponding part of the above embodiment, thereby sending the required mapping relationship to the second network node C, so that the second network node C may determine the third mapping relationship to send to the first network node a accordingly, and implement the unnecessary procedure.

In still other embodiments of the present application, the third mapping relationship described in the foregoing embodiments may also be determined by the third network node and then sent to the first network node, and the implementation process of determining the third mapping relationship by the third network node may refer to descriptions of corresponding parts of the following embodiments, which are not described herein. And regarding the implementation process that the first network node determines the second channel information of the data packet to be sent according to the third mapping relationship sent by the third network node, and sends the data packet to be sent to the second network node through the second channel, reference may be made to the description of the corresponding parts of the above embodiments, which are not repeated in this application.

In still other embodiments of the present application, in order to avoid the QoS parameter redundancy problem caused by the method to the first network node by the method for the packet transmission method based on the network service quality described in the foregoing system embodiment, overhead is reduced, and in the implementation process of the embodiment of the present application, the PDU session establishment acceptance message sent by the core network to the first network node may not include the QoS parameter corresponding to the QoS flow identifier. To implement such a PDU session establishment acceptance message feedback manner, the first network node may acquire QoS parameter indication information for indicating whether the core network feeds back QoS parameters to the first network node,

after that, before the first network node sends a registration request message (i.e. a NAS message) to the core network through the second network node and the third network node, the QoS parameter indication information may be added to the registration request message and then sent, so that the core network knows whether to send the QoS parameter to the first network node that is registered this time. The QoS parameter indication information may take a value of 1 or true, which indicates that the NAS message (for example, registration request accept, PDU session establishment accept message, PDU session modification accept message) fed back by the core network needs to include the QoS parameter corresponding to the QFI. The QoS parameter indication information may take a value of 0 or false, which indicates that the NAS message (for example, registration request accept, PDU session establishment accept message, PDU session modification accept message) fed back by the core network does not need to include the QoS parameter corresponding to QFI. The latter QoS parameter indication information can only take a value of 0 or false, or if the registration request message contains the QoS parameter indication information, it means that the NAS message (for example, registration request accept, PDU session establishment accept message, PDU session modification accept message) fed back by the core network does not need to contain the QoS parameter corresponding to QFI.

It should be noted that, the specific form of the QoS parameter indication information may also be a Sparklink indication information or first network node indication information in the Sparklink system, so as to determine whether the first network node is the first network node in the Sparklink system, and so on, so as to determine that the NAS message (for example, registration request accept, PDU session establishment accept message, or PDU session modification accept message) fed back by the core network does not need to include the QoS parameter corresponding to the QFI.

In practical application, for the different QoS parameter indication information, the first network node may send the different QoS parameter indication information to the AMF of the core network, or may forward the different QoS parameter indication information to the AMF through the third network node, or may be part of subscription information of the first network node, and stored in the UDM of the core network, so that the AMF obtains corresponding QoS parameter indication information from the requested subscription information, etc., where the implementation process of obtaining each indication information by the AMF of the core network is not limited, and may be determined according to circumstances.

Based on the analysis, the first network node sends a registration request message (without QoS parameter indication) to the third network node through the second network node, and the third network node forwards the registration request message to the AMF of the core network, and may carry the identifier of the first network node at the N2 interface and the required QoS parameter indication information, where the QoS parameter indication information may be determined by the third network node or the second network node, for example, a Sparklink indication included in User Location Information (ULI) sent by the second network node to the third network node, or a Sparklink identifier of the second network node in the user location information, so that the third network node may determine that the first network node is a managed node of Sparklink according to the Sparklink indication or the Sparklink identifier. The procedure for obtaining the indication information of the non-3 GPP node is similar, and will not be described in detail in this application.

After the AMF sends the acquired identifier of the first network node and the QoS parameter indication information to the SMF, in the stage of applying for PDU session establishment/modification by the first network node, the SMF may determine, according to the QoS parameter indication information in the indication information, whether the feedback PDU session establishment acceptance message includes the QoS parameter corresponding to the QoS flow identifier. If the core network determines not to send QoS parameters to the first network node based on the QoS parameter indication information, the fourth mapping relationship established by the third network node may be indicated to include QoS parameters corresponding to the QoS flow identifier, that is, the fourth mapping relationship may represent a mapping relationship between the PDU session identifier, the QoS parameter, the QoS flow identifier, the QoS identifier (may not be included), the first channel information, and the second IP packet header information, and how the first network node uses the fourth mapping relationship of the content to determine an implementation process of the second communication information of the data packet to be sent, which is similar to the implementation process described in the foregoing embodiments, which is not described in detail in the present application.

Referring to fig. 7, a flowchart of an alternative example of a network service quality based data packet transmission method implemented at a second network node side according to the present application is provided, that is, the network service quality based data packet transmission method described in this embodiment may be performed by the second network node, or may describe a process of implementing the second network node to send a data packet to the first network node, where the method may be applicable to a Sparklink access or a trusted non-3 GPP access network scenario, as shown in fig. 7, and the method may include:

Step S31, receiving flow mapping information sent by a third network node;

in this embodiment, the traffic mapping information (IP to Sparklink Traffic Mapping Info or IP to non-3GPP Traffic Mapping Info) sent by the third network node to the second network node may include, but is not limited to, a first mapping relationship between different first IP packet header information and different QoS information. It should be noted that, the first IP header information may include a local IP address of the first network node (such as a local IP address allocated by the first network node in the Sparklink) and second IP header information, and regarding the content and function of the second IP header information, reference may be made to the description of the corresponding part of the above embodiment, where the QoS information may include QoS parameters, or include QoS parameters and QoS identifiers (such as XOI or 5 QI), as the case may be. Regarding the respective contents of the QoS parameters and QoS identifiers, reference may be made to the descriptions of the corresponding portions of the above embodiments, which are not repeated.

Step S32, receiving a data packet to be transmitted, which is transmitted by a third network node;

step S33, obtaining the second channel information and QoS parameters of the data packet to be sent according to the first mapping relation contained in the traffic mapping information and the first IP packet header information of the data packet to be sent.

Referring to the user protocol stack structures shown in fig. 1a and fig. 1b, the second network node receives a data packet to be sent by the core network forwarded by the third network node, and can obtain IP packet header information from the packet header of the data packet to be sent, and record the IP packet header information as first IP packet header information; for non-3 GPP access, non-3 GPP air interface identifications, e.g., MAC addresses, etc., can be used. So that the second network node can distinguish between the different first network nodes accessed in accordance therewith.

And then, the second network node can acquire second channel information of a corresponding second channel between the first network node with the determined first identifier and the second network node, and determine mapping relations between different second IP packet header information and/or QoS identifiers and the second channel information, namely the second mapping relation, so as to acquire second channel information mapped by the second IP packet header information and/or QoS identifiers by combining the first mapping relation between the first IP packet header information and the QoS information sent by the third network node.

It should be noted that, for the second mapping relationship, the second network node may determine the second mapping relationship, and the second network node may send the second mapping relationship to the first network node. The second mapping relationship may be determined by the third network node, and then included in the traffic mapping information and sent to the second network node.

Based on the analysis, the second channel information of the data packet to be sent may be determined by the second network node based on the second mapping relationship and the first mapping relationship, that is, the second IP packet header information in the first IP packet header information of the data packet to be sent or the QoS identifier mapped by the first IP packet header information is obtained, so as to determine the second channel information mapped by the second IP packet header information or the QoS identifier. For the QoS parameters of the data packet to be sent, the second network node may directly determine, according to the first mapping relationship, the QoS parameters mapped by the first IP packet header information of the data packet to be sent as the QoS parameters of the data packet to be sent.

In practical application, the implementation method of the first identifier of the first network node is determined by how the second network node determines the local IP address of the first network node according to the first IP packet header information of the data packet to be sent, which is not limited in the application. In one possible implementation manner, the second network node directly receives the first identifier of the first network node corresponding to the local IP address of the first network node sent by the third network node. The traffic mapping information sent by the third network node to the second network node may further include a first identifier of the first network node accessing the second network node, for example, an air interface identifier adopted when the first network node and the second network node communicate through Sparklink, or an air interface identifier of non-3 GPP, etc.

In yet another possible implementation manner, if the first network node has sent a data packet to the second network node, because the first network node sends the data packet to the second network node through the corresponding air interface based on the allocated local IP address, the second network node may determine, according to the historical data packet from the different first network node, a correspondence between the local IP address of the different first network node and the first identifier of the different first network node, so that the second network node may obtain the first identifier of the first network node according to the correspondence and the local IP address of the first network node in the first IP packet header information of the data packet to be sent, thereby identifying the first network node that is to receive the data packet to be sent.

Step S34, according to QoS parameters of the data packet to be sent, the data packet to be sent is sent to the corresponding first network node through the second channel corresponding to the second channel information of the data packet to be sent.

Therefore, in order to solve the technical problem that the second network node cannot really realize the end-to-end QoS control because the second network node performs different processing methods on the second channel based on the DSCP value in the packet header of the data packet to be transmitted, the QoS parameters of the data packet to be transmitted are difficult to meet the QoS requirement of the first channel for transmitting the data packet to be transmitted.

Referring to fig. 8, a flowchart of another alternative example of a data packet transmission method implemented on the second network node side and based on network service quality according to the present application is shown in fig. 8, where the method may include:

step S41, receiving flow mapping information sent by a third network node;

unlike the above embodiments, in this embodiment, the traffic mapping information received by the second network node may include the first mapping relationship described above, and the second mapping relationship between the second channel information and the second IP packet header information and/or the QoS identifier, and the process of obtaining the second mapping relationship may be described in connection with the corresponding portion of the above embodiments.

In practical application, the third network node may determine, according to the identifier of the first network node at the N2 interface, which is provided by the core network AMF, the second network node to which the first network node is connected, and the IP address of the first network node, for example, the IP address allocated to the first network node when the first network node is connected to the third network node, or the IP address allocated to the corresponding first network node by the third network node when the GTP-U tunnel is established, etc. When sending a data packet to the second network node, the second network node can forward the data packet sent by the third network node to the first network node according to the data packet transmission method based on the network service quality and provided by the second network node side, and ensure the consistency of the end-to-end QoS requirements.

Step S42, receiving a data packet to be transmitted sent by a third network node;

step S43, according to the first mapping relation contained in the flow mapping information, qoS parameters mapped by the first IP packet header information of the data packet to be sent are obtained;

step S44, determining second channel information corresponding to second IP packet header information in the first IP packet header information of the data packet to be transmitted as second channel information of the data packet to be transmitted according to a second mapping relation contained in the traffic mapping information;

in still other embodiments of the present application, the second network node may further obtain, according to the first mapping relationship, a QoS parameter and a QoS identifier mapped by the first IP packet header information of the data packet to be sent, and then determine, according to the second mapping relationship, second channel information corresponding to the QoS identifier as the second channel information of the data packet to be sent, where an implementation process is not described in detail in the present application. The second mapping relationship may be established by the third network node or may be established by the second network node, which is not limited in this application.

In still other embodiments of the present application, the third network node may also configure the first mapping relationship and the second mapping relationship to a fifth mapping relationship, that is, a mapping relationship between the first IP packet header information, the QoS information, and the second channel information, and directly send the mapping relationship to the second network node, so that the second network node obtains the second channel information and the QoS parameter of the data packet to be sent according to the fifth mapping relationship.

Step S45, according to QoS parameters of the data packet to be sent, the data packet to be sent is sent to the corresponding first network node through the second channel corresponding to the second channel information of the data packet to be sent.

In summary, in the implementation process that the third network node needs to send the data packet to the first network node through the second network node, the second network node may receive the mapping relationship between the first IP packet header information (the local IP address of the first network node and the second IP packet header information), the QoS information (QoS parameter, or the combination information of the QoS parameter and the QoS identifier) and the second channel information sent by the third network node, based on the mapping relationship, the second network node may determine the QoS parameter and the second channel information mapped by the first IP packet header information in the packet header of the data packet to be sent, that is, learn the QoS requirement of the data packet to be sent and which second channel is used for transmitting the data packet to be sent, and then, according to the QoS parameter, send the data packet to the first network node through the determined second channel, so as to ensure that the QoS processing between the first network node and the second network node is consistent with the QoS requirement of the data packet to be sent, thereby truly implementing end-to-end QoS control.

Referring to fig. 9, a signaling flow diagram of another alternative example of the network service quality-based data packet transmission method proposed in the present application is shown in fig. 9, where the method may include:

step S51, the third network node receives PDU conversation resource request information sent by the core network;

the first network node described in the above embodiment is used to register with the core network, after the registration is completed, the first network node applies for establishing the description content of the PDU session to the core network, after the core network receives the PDU session establishment request, a corresponding PDU session request message may be generated, which may include, but is not limited to, the PDU session identifier of the PDU session to be established, the QoS flow identifier and QoS parameter corresponding to each QoS flow included in the PDU session, and the process of acquiring the PDU session request message is not described in detail in the present application.

Step S52, the third network node obtains a fourth mapping relation according to QoS parameters in the PDU session resource request message;

the fourth mapping relationship may represent a mapping relationship among PDU session identifier, qoS flow identifier, qoS identifier, first channel information and second IP packet header information in combination with the descriptions of the corresponding parts of the above embodiments; or the mapping relation among the PDU session identifier, the QoS flow identifier, the first channel information and the second IP packet header information is represented, and the meaning of each information content contained in the mapping relation may be combined with the description of the corresponding part of the above embodiment, which is not repeated in this embodiment.

In practical application, in determining the fourth mapping relationship, the third network node may obtain a first mapping relationship between the corresponding QoS flow identifier and the first channel information according to the received QoS parameters of each QoS flow, for example, map QoS flows with similar QoS parameters to a first channel, determine mapping relationships between QoS flow identifiers corresponding to the similar QoS parameters and the first channel information of the first channel, and record the mapping relationships as first mapping relationships, which may be 1:1 or n:1 mapping relationships. As for the configuration method of the first channel information, the description of the corresponding parts of the above embodiments may be combined, and this embodiment will not be described in detail, it will be understood that the first channel information of different first channels is different, and therefore, the first channel information may be used to identify the first channel between the third network node and the first network node accessing the third network node;

the third network node may then configure, for each first channel, a corresponding DSCP/(DSCP and IPv6 flow identification) class priority attribute value, and the second IP header information constituting the first channel, that is, the second IP header information includes the priority attribute value configured for the first channel between the first network node and the third network node. It can be seen that the second IP header information may be in a one-to-one correspondence with the first channel information of the determined first channel. According to the QoS parameter of the local IP address of the first network node, a corresponding QoS identifier can be obtained, so that a third corresponding relationship, such as a mapping relationship of 1:1, between the QoS identifier and the QoS flow identifier can be determined by combining the corresponding relationship. Thus, the third network node combines the obtained first correspondence, second correspondence and third correspondence, and can generate a fourth mapping relationship including the content.

Step S53, the third network node obtains the third mapping relation according to the fourth mapping relation and the N2 interface identification of the first network node in the PDU session request message;

after the third network node receives the PDU session resource request message sent by the AMF through the N2 interface, the second network node to which the first network node is connected and the local IP address of the first network node may be determined according to the identifier of the first network node at the N2 interface, so as to determine the first identifier of the first network node (i.e. the air interface identifier of the access network) according to the IP address, obtain the second channel information corresponding to the first network node with the first identifier, and then establish the mapping relationship between the second channel information and the second IP packet header information and/or the QoS identifier, and record as the second mapping relationship. And then, the third network node can form a third mapping relation according to the fourth mapping relation and the second mapping relation.

In still other embodiments, the third network node may send the fourth mapping relationship and the second mapping relationship directly to the corresponding first network node, so that the first network node may implement sending the data packet to be sent to the second network node to which the first network node accesses according to the fourth mapping relationship, and the implementation process may refer to the content of the corresponding embodiment described above from the first network node side.

Step S54, the third network node sends the third mapping relation to the corresponding first network node;

step S55, the first network node obtains PDU session identification, qoS flow identification and QoS parameter of the data packet to be sent;

step S56, the first network node obtains the second channel information of the data packet to be transmitted according to the QoS flow identification of the data packet to be transmitted and the third mapping relation;

step S57, the first network node sends the data packet to be sent to the second network node through the second channel corresponding to the second channel information of the data packet to be sent according to the QoS parameter of the data packet to be sent;

regarding the implementation process of step S54 to step S57, the description of the corresponding parts of the above embodiments may be combined, which is not repeated in this embodiment.

In step S58, the second network node forwards the data packet to be sent to the third network node.

In practical application, if a wired communication mode is adopted between the second network node and the third network node, the second network node may directly forward the received data packet to be sent to the third network node through the wired communication channel, and then report the data packet to the core network, and the core network sends the data packet to the corresponding data network. In some embodiments, the second network node may also determine QoS parameters of the data packet to be sent according to the received header information of the data packet to be sent, such as the first channel information, QFI, XQI, second IP header information, and the obtained corresponding mapping relationships, so as to forward the data packet to be sent to the third network node according to the QoS parameters.

In summary, in this embodiment of the present application, the third network node may obtain, according to the PDU session request message content sent by the core network, a third mapping relation of the foregoing content, send the third mapping relation to a corresponding first network node accessing the third network node, that is, a first network node applying for establishing a corresponding PDU session, so, in a case that the first network node needs to report a data packet to be sent generated by an application layer, the third network node may directly determine, based on the third mapping relation, first channel information, second IP packet header information, qoS parameters, and second channel information of the data packet to be sent, thereby implementing layer-by-layer encapsulation of the data packet to be sent by using the first channel information, the second IP packet header information, and the second channel information in combination with a user plane protocol stack, and then send the encapsulated data packet to the second network node through the second channel according to the obtained QoS parameters, and forward the encapsulated data packet to the third network node through the second network node, and may also send the data packet to the corresponding data network through the core network according to needs, so as to meet corresponding application requirements.

Referring to fig. 10, a signaling flow diagram of still another alternative example of a packet transmission method based on network service quality according to the present application is shown in fig. 10, where the method may include:

Step S61, the third network node receives PDU conversation resource request information sent by the core network;

step S62, the third network node obtains a fourth mapping relation according to QoS parameters in the PDU session request message;

step S63, the third network node sends the fourth mapping relation to the corresponding first network node;

regarding the implementation procedure of step S61 to step S63, reference may be made to the description of the corresponding parts of the above embodiments.

Step S64, the third network node obtains a first mapping relation according to the PDU conversation resource request message;

in this embodiment of the present application, the first mapping relationship may represent a mapping relationship between different first IP packet header information and different QoS information, where, for example, the first IP packet header information includes a local IP address of a corresponding first network node accessing the third network node and second IP packet header information. According to the analysis, the local IP address of the corresponding first network node and the second network node to which the first network node is connected are obtained according to the identifier of the first network node in the PDU session resource request message at the N2 interface, and then the QoS parameter and QoS flow identifier mapped by the local IP address of the first network node can be determined by combining other information in the PDU session resource request message, so as to obtain the QoS identifier corresponding to the QoS flow identifier, and obtain the first mapping relationship, but the method is not limited to the mapping relationship obtaining mode.

Step S65, the third network node sends the first mapping relation to the second network node accessed by the first network node;

in practical application, the third network node may send the first mapping relationship to the second network node to which the first network node accesses, as traffic mapping information.

Step S66, the second network node obtains a second mapping relation according to the first mapping relation;

as described above, the second mapping relationship may represent a mapping relationship between the second channel information and the second IP packet header information and/or the QoS identifier, and the specific acquisition process may be combined with the description of the corresponding portion of the above embodiment, which is not described in detail in this embodiment.

In step S67, the second network node sends the second mapping relation to the first network node.

Regarding the implementation process how to send the data packet generated by the application layer to the second network node after the first network node receives the fourth mapping relationship sent by the third network node and the second mapping relationship sent by the second network node, reference may be made to the description of the corresponding part of the above embodiment, which is not repeated in this embodiment.

Referring to fig. 11, a signaling flow diagram of another alternative example of a packet transmission method based on network service quality according to the present application is shown in fig. 10, where the method may include:

Step S71, the third network node receives PDU conversation resource request information sent by the core network;

step S72, the third network node obtains a first mapping relation according to the PDU conversation resource request message;

regarding the implementation procedure of step S71 and step S72, reference may be made to the description of the corresponding parts of the above embodiments.

Step S73, the third network node obtains a fifth mapping relation according to the first mapping relation and a first identifier of the first network node corresponding to a local IP address of the first network node;

in this embodiment of the present application, the fifth mapping relationship may represent a mapping relationship between the first IP packet header information, qoS information (including QoS parameters, or including QoS parameters and QoS identifiers, such as XQI, 5QI, etc.) and the second channel information, and the third network node may include the fifth mapping relationship in the traffic mapping information and send the traffic mapping information to the second network node. The traffic mapping information may further include, as needed, a first identifier of a first network node of the access base station, such as a air interface identifier of a Sparklink.

Step S74, the third network node sends the fifth mapping relation to the second network node accessed by the corresponding first network node;

step S75, the second network node receives a data packet to be sent by the third network node;

Step S76, the second network node obtains the second channel information and QoS parameters of the data packet to be transmitted according to the fifth mapping relation and the first IP packet header information of the data packet to be transmitted;

in step S77, the second network node sends the data packet to be sent to the corresponding first network node through the second channel corresponding to the second channel information of the data packet to be sent according to the QoS parameter of the data packet to be sent.

It can be seen that, in this embodiment of the present application, the third network node may determine, for relevant information of each first network node that is accessed, different first IP packet header information, different QoS information, and a mapping relationship between the two, and then may obtain the fifth mapping relationship according to a PDU session resource request message of each first network node that is sent by the core network and applies for an established PDU session, and send the fifth mapping relationship to the second network node, so that, in a case that the second network node sends a data packet to the first network node, the QoS parameter and the second channel information of the data packet may be determined directly according to the fifth mapping relationship, that is, the QoS requirement of the data packet to be sent for the first network node is known, thereby ensuring consistency of end-to-end QoS processing in a process of sending the data packet to the first network node.

Based on the description of the above embodiment, if the first network node a moves from the second network node B currently accessed to the coverage area of the second network node C, and the second network node B and the second network node C are connected to the same third network node, taking the Sparklink system application scenario as an example, in combination with the above description of the mobility characteristics of the network nodes, the third network node knows the first network node a accessed by the second network node C, that is, after the first network node a originally accessed by the second network node, the third network node may send the flow mapping information including the fifth mapping relation to the second network node C, so that the second network node C can implement the issuing of the data packet accordingly, and the QoS requirement from end to end is satisfied. In the case where the second network node B and the second network node C are connected to different third network nodes, the description of the corresponding parts above is referred to, and this embodiment will not be described in detail.

Referring to fig. 12, a schematic structural diagram of an alternative example of a network service quality based packet transmission device proposed in the present application may be deployed at a first network node, where as shown in fig. 12, the device may include:

A PDU session information obtaining module 110, configured to obtain a PDU session identifier, a QoS flow identifier, and QoS parameters of a protocol data unit of a data packet to be sent;

a third mapping relationship obtaining module 120, configured to obtain a third mapping relationship including the PDU session identifier;

the third mapping relation is provided by a second network node accessed by the first network node and/or a third network node, and comprises the mapping relation among the PDU session identifier, the QoS flow identifier, the first channel information, the second IP packet header information and the second channel information; the first channel information is used for identifying a first channel between the first network node and the third network node; the second IP header information includes a priority attribute value configured for a first channel between the first network node and the third network node; the second channel information is used for identifying a second channel between the first network node and the second network node;

a second channel information determining module 130, configured to obtain second channel information of the data packet to be sent according to the QoS flow identifier of the data packet to be sent and the third mapping relationship;

and the QoS control module 140 is configured to send the data packet to be sent to a second network node through a second channel corresponding to the second channel information of the data packet to be sent according to the QoS parameter of the data packet to be sent.

In some embodiments, the third mapping relationship includes a fourth mapping relationship and a second mapping relationship, where the fourth mapping relationship represents a mapping relationship among the PDU session identifier, the QoS flow identifier, the first channel information, and the second IP packet header information, or represents a mapping relationship among the PDU session identifier, the QoS flow identifier, the first channel information, the QoS identifier, and the second IP packet header information; the second mapping relation represents the mapping relation between the second channel information and the second IP packet header information or the QoS identifier. In this case, the third mapping relationship obtaining module 120 may include:

a fourth mapping relationship receiving unit, configured to receive the fourth mapping relationship including the target PDU session identifier sent by the third network node;

and the second mapping relation receiving unit is used for receiving the second mapping relation sent by the second network node.

Based on this, the above-described second channel information determination module 130 may include:

a first information obtaining unit, configured to obtain, based on the fourth mapping relationship, first channel information and QoS identifier corresponding to the QoS flow identifier of the data packet to be sent, and/or second IP packet header information corresponding to the first channel information;

And the second channel information determining unit is used for determining the obtained second IP packet header information or the second channel information mapped by the QoS identifier as the second channel information of the data packet to be transmitted based on the second mapping relation.

In still other embodiments, the third mapping obtaining module 120 may also include:

and the third mapping relation receiving unit is used for receiving a third mapping relation which is sent by the third network node and contains the PDU session identifier of the data packet to be sent.

Referring to fig. 13, a schematic structural diagram of another alternative example of a packet transmission device based on network service quality, which may be deployed at a second network node, as shown in fig. 13, may include:

a traffic mapping information receiving module 210, configured to receive traffic mapping information sent by a third network node;

wherein, the flow mapping information comprises a first mapping relation between different first IP packet header information and different QoS information; the first IP packet header information comprises a local IP address of the first network node and second IP packet header information; the second IP header information includes a priority attribute value configured for a first channel between a first network node and the third network node; the QoS information comprises QoS parameters or QoS parameters and QoS identifications;

A data packet to be sent receiving module 220, configured to receive a data packet to be sent by the third network node;

a transmission control information obtaining module 230, configured to obtain second channel information and QoS parameters of the data packet to be sent according to the first mapping relationship and the first IP packet header information of the data packet to be sent;

wherein the second channel information is used to identify a second channel between the first network node and the second network node;

the QoS control module 240 is configured to send the data packet to be sent to the corresponding second network node through a second channel corresponding to the second channel information of the data packet to be sent according to the QoS parameter of the data packet to be sent.

In some embodiments, the transmission control information obtaining module 230 may include:

a first determining unit, configured to determine a first identifier of a first network node according to a local IP address of the first network node in the first IP packet header information of the data packet to be sent; the first identifier is used for identifying each first network node accessing the second network node;

a second mapping relation obtaining unit, configured to determine second channel information of a second channel between the first network node and the second network node having the first identifier, and obtain a second mapping relation between the second channel information and second IP packet header information or QoS identifier;

The first obtaining unit is configured to obtain, according to the first mapping relationship and the first IP packet header information of the data packet to be sent, a QoS parameter, or a QoS parameter and a QoS identifier of the data packet to be sent.

And the second obtaining unit is used for obtaining the second channel information of the data packet to be sent according to the second mapping relation and the second IP packet header information in the first IP packet header information of the data packet to be sent or the QoS identifier.

Based on the description of the above embodiments, the above first determining unit may include:

a first receiving unit, configured to receive a first identifier of a first network node corresponding to a local IP address of the first network node sent by the third network node; or alternatively, the process may be performed,

the corresponding relation determining unit is used for determining the corresponding relation between the local IP addresses of the different first network nodes and the first identifications of the different first network nodes according to the historical data packets from the different first network nodes;

and the third obtaining unit is used for obtaining the first identifier of the first network node and obtaining the second channel information corresponding to the local IP address of the first network node according to the corresponding relation and the local IP address of the first network node in the first IP packet header information of the data packet to be sent.

In still other embodiments, the second mapping relation obtaining unit may include:

the first establishing unit is used for establishing a second mapping relation between the second IP packet header information or the QoS identifier and the second channel information; or alternatively, the process may be performed,

and a fourth obtaining unit, configured to obtain a second mapping relationship between the second channel information included in the traffic mapping information and the second IP packet header information or the QoS identifier.

Based on the description of the above embodiments, the apparatus may further include:

and the second mapping relation sending module is used for sending the second mapping relation to the first network node so that the first network node determines a second channel for sending the data packet to be sent of the first network node to the second network node according to the second mapping relation.

Referring to fig. 14, a schematic structural diagram of another alternative example of a packet transmission device based on network service quality, which may be deployed at a third network node, as shown in fig. 14, may include:

a PDU session resource request message receiving module 310, configured to receive a PDU session request message sent by a core network; the PDU session resource request message comprises a PDU session identifier, a QoS flow identifier and a QoS parameter;

A fourth mapping relationship obtaining module 320, configured to obtain a fourth mapping relationship according to the QoS parameter;

in this embodiment of the present application, the fourth mapping relationship may represent a mapping relationship among a PDU session identifier, a QoS flow identifier, first channel information, and second IP packet header information; or represents the mapping relation among PDU conversation label, qoS flow label, qoS label, first channel information and second IP packet head information; the first channel information is used to identify a first channel between the respective first network node and the third network node; the second IP header information includes a priority attribute value configured for a first channel between a first network node and the third network node;

and a fourth mapping relation sending module 330, configured to send the fourth mapping relation to a corresponding first network node.

In still other embodiments, the PDU session request message further includes an N2 interface identifier of the first network node, and the apparatus may further include:

the second mapping relation obtaining module is used for obtaining a second mapping relation according to the second mapping relation and the N2 interface identifier of the first network node; the second mapping relation represents the mapping relation between the second channel information and the second IP packet header information and/or QoS identification; the second channel information is used for identifying a second channel between the first network node and the second network node;

The second mapping relation sending module is used for sending the second mapping relation to the corresponding first network node;

in still other embodiments, the PDU session resource request message further includes an N2 interface identifier of the first network node, and the apparatus may further include:

a third mapping relation obtaining module, configured to obtain a third mapping relation according to the second mapping relation and an N2 interface identifier of the first network node; the third mapping relation represents the mapping relation among PDU session identification, qoS flow identification, first channel information, second IP packet header information and second channel information; or a mapping relationship among PDU session identification, qoS flow identification, qoS identification, first channel information, second IP header information, and second channel information.

And the third mapping relation sending module is used for sending the third mapping relation to the first network node.

Based on the description of the above embodiment, if the PDU session resource request message further includes an N2 interface identifier of the first network node, the apparatus may further include:

the first mapping relation obtaining module is used for obtaining a first mapping relation according to the PDU session request message; the first mapping relation represents the mapping relation between different first IP packet header information and different QoS information, wherein the first IP packet header information comprises a local IP address of a first network node and second IP packet header information;

The first mapping relation sending module is used for sending the fourth mapping relation to the second network node;

or alternatively;

the second mapping relation acquisition module is used for acquiring a second mapping relation between the second channel information and the second IP packet header information or the QoS identifier;

the mapping relation transmitting module is used for transmitting the second mapping relation and the first mapping relation to a second network node; or, obtaining a fifth mapping relation from the first mapping relation and the second mapping relation, and sending the fifth mapping relation to a second network node;

wherein, the fifth mapping relation represents the mapping relation among the first IP packet header information, qoS information and second channel information; the QoS information includes QoS parameters, or QoS parameters and QoS identities.

It should be noted that, regarding the various modules, units, and the like in the foregoing embodiments of the apparatus, the various modules and units may be stored as program modules in a memory, and the processor executes the program modules stored in the memory to implement corresponding functions, and regarding the functions implemented by each program module and the combination thereof, and the achieved technical effects, reference may be made to descriptions of corresponding parts of the foregoing method embodiments, which are not repeated herein.

The application further provides a computer readable storage medium, on which a computer program may be stored, where the computer program may be invoked and loaded by a processor included in each node to implement the network service quality-based data packet transmission method described in the foregoing corresponding node side embodiment, and the implementation process may refer to the description of the foregoing corresponding embodiment, which is not repeated herein.

Referring to fig. 15, a schematic hardware structure of an alternative example of a computer device suitable for the network service quality-based data packet transmission method proposed in the present application may be the first network node, the second network node, or the third network node, where it may be understood that the computer device may be different as different nodes in the system, and the product types of the computer device may be different, which is not limited in this application and may be determined according to the scene requirements. As shown in fig. 15, the computer device may include: a communication module 1, at least one memory 2 and at least one processor 3, wherein:

the communication module 1 may include a communication module capable of implementing data interaction using a wireless communication network, such as a WIFI module, a 5G/6G (fifth generation mobile communication network/sixth generation mobile communication network) module, a GPRS module, etc., to implement communication with other nodes. The communication module 1 may further include a communication interface, such as a USB interface, a serial/parallel port, etc., for implementing data interaction between internal components of the computer device, where specific content included in the communication module 1 is not limited in this application, and may be determined according to a type of the computer device.

If the computer device is a second network node, the memory 2 may be used to implement the first program of the network service quality-based data packet transmission method executed by the second network node, and the processor 2 loads and executes the first program stored in the memory to implement the network service quality-based data packet transmission method executed by the second network node. Similarly, if the computer device is a first network node, the memory 2 may be used to implement a second program of the network service quality-based data packet transmission method executed by the first network node, and the processor 2 loads and executes the second program stored in the memory to implement the network service quality-based data packet transmission method executed by the first network node; if the computer device is a third network node, the memory 2 may be used to implement a third program of the network service quality-based data packet transmission method executed by the third network node, and the processor 2 loads and executes the third program stored in the memory to implement the network service quality-based data packet transmission method executed by the third network node, which is not described in detail in the embodiments of the present application.

In embodiments of the present application, memory 2 may comprise high-speed random access memory, and may also comprise non-volatile memory, such as at least one magnetic disk storage device or other volatile solid-state storage device. The processor 3 may be a central processing unit (Central Processing Unit, CPU), application-specific integrated circuit (ASIC), digital Signal Processor (DSP), application-specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, etc. The application does not limit the respective device types of the memory and the processor contained in different computer devices, and can be determined according to the situation.

It should be understood that the structure of the computer device shown in fig. 15 does not limit the computer device in the embodiment of the present application, and in practical application, the computer device may include more or less components than those shown in fig. 15 as different nodes, or some components may be combined, which is not listed herein.

Finally, it should be noted that, in the present description, each embodiment is described in a progressive or parallel manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are only required to be referred to each other. The apparatus, system and computer device disclosed in the embodiments are relatively simple to describe, and the relevant points refer to the description of the method section, since they correspond to the methods disclosed in the embodiments.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for transmitting data packets based on network quality of service, the method comprising:

2. The method of claim 1, wherein the obtaining the second channel information and the QoS parameter of the data packet to be sent according to the first mapping relationship and the first IP packet header information of the data packet to be sent includes:

obtaining a QoS parameter of the data packet to be sent or the QoS parameter and QoS identification according to the first mapping relation and the first IP packet header information of the data packet to be sent;

and obtaining second channel information of the data packet to be sent according to the second mapping relation and the second IP packet header information or the QoS identification in the first IP packet header information of the data packet to be sent.

3. The method of claim 2, the obtaining a second mapping relationship between the second IP packet header information or the QoS identifier and the second channel information, comprising:

or alternatively, the process may be performed,

4. The method of claim 2, wherein the determining the first identifier of the first network node according to the local IP address of the first network node in the first IP header information of the data packet to be sent includes:

and determining a first identification of the first network node according to the corresponding relation and the local IP address of the first network node in the first IP packet header information of the data packet to be sent.

5. A method for transmitting data packets based on network quality of service, the method comprising:

6. The method of claim 5, the third mapping relationship comprising a fourth mapping relationship and a second mapping relationship, the fourth mapping relationship representing a mapping relationship between the PDU session identification, qoS flow identification, first channel information, and second IP header information, or representing a mapping relationship between the PDU session identification, qoS flow identification, first channel information, qoS identification, and second IP header information; the second mapping relation represents the mapping relation between the second channel information and the second IP packet header information or the QoS identifier;

receiving the fourth mapping relation which is sent by the third network node and contains the PDU session identifier;

and receiving the second mapping relation sent by the second network node.

7. The method of claim 6, wherein the obtaining the second channel information of the data packet to be sent according to the QoS flow identifier of the data packet to be sent and the third mapping relationship includes:

8. The method of claim 5, the obtaining a third mapping relationship including the PDU session identification, comprising:

9. A method for transmitting data packets based on network quality of service, the method comprising:

10. A computer device, the computer device comprising: a communication module, at least one memory, and at least one processor, wherein:

the memory is used for storing a first program for realizing the data packet transmission method based on network service quality according to any one of claims 1 to 4; or a second program for realizing the network service quality-based packet transmission method according to any one of claims 5 to 8; or a third program for implementing the network service quality-based packet transmission method according to claim 9;

The processor is configured to load and execute a first program stored in the memory, and implement the network service quality-based data packet transmission method according to any one of claims 1 to 4; or loading and executing a second program stored in the memory to realize the data packet transmission method based on network service quality according to any one of claims 5-8; or loading and executing the third program stored in the memory, so as to implement the data packet transmission method based on network service quality according to claim 9.