WO2023019895A1

WO2023019895A1 - Data packet transmission method based on network quality of service, and related device

Info

Publication number: WO2023019895A1
Application number: PCT/CN2022/076794
Authority: WO
Inventors: 罗海燕; 戴明增; 卓义斌; 唐廷芳
Original assignee: 联想(北京)有限公司
Priority date: 2021-08-19
Filing date: 2022-02-18
Publication date: 2023-02-23
Also published as: CN113630902B; CN113630902A

Abstract

The present application provides a data packet transmission method based on network quality of service (QoS), and a related device. During the data packet transmission between a first network node and a second network node, according to a mapping relationship between the first IP packet header information (such as the local IP address of the first network node and second IP packet header information) and QoS information sent by a third network node, the second network node determines a QoS parameter and second channel information of a data packet to be sent; according to a mapping relationship, which is sent after construction of the third network node and/or the second network node, between information such as the second channel information and a QoS flow identifier, the first network node determines the second channel information of said data packet, such that the first/second network node sends said data packet to the other one according to the obtained QoS parameter and second channel information, satisfying the consistency of end-to-end QoS requirements; and a core network does not need to construct the mapping relationships above, such that a workload increase in the change of core network function configuration is avoided.

Description

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

This application claims the priority of the Chinese patent application with the application number 202110956447.6 and the application title "Data packet transmission method and related equipment based on network service quality" submitted to the China Patent Office on August 19, 2021, the entire content of which is incorporated by reference incorporated in this application.

technical field

The present application mainly relates to the technical field of wireless communication, and more specifically relates to a data packet transmission method and related equipment based on network quality of service.

Background technique

In recent years, in order to meet the needs of scenarios such as smart cars, smart homes, smart terminals, and smart manufacturing, various emerging businesses have proposed wireless short-distance communication technologies in terms of low latency, high reliability, fine synchronization, high concurrency, and information security. In order to meet the needs, the new generation of wireless short-range communication air interface technical standard CCSA TC10 "Wireless short-range communication vehicle air interface technical requirements and test methods" was designed, and an industry promotion alliance - Sparklink (Sparklink) was established. In practical applications, the first network node (such as user equipment UE, or T-Node defined by Sparklink) passes through the second network node (such as trusted non-3GPP access node TNAP, or G-Node defined by Sparklink), the third Network nodes (such as Trusted Non-3GPP Gateway Function (TNGF) and 5G (5th Generation, fifth generation) core network perform data packet transmission.

Among them, for the Sparklink user plane protocol stack in the 5G communication network structure, it usually refers to the user plane protocol stack accessed by the trusted non-3GPP (3rd Generation Partnership Project, third generation partnership project), such as directly using the non- The 3GPP access layer protocol is replaced by the Sparklink access layer, and two user plane protocol stacks are obtained as shown in Figure 1a and Figure 1b, so that in the application of uplink data packet/downlink data packet transmission of the user equipment UE, it can be realized accordingly End-to-end QoS (Quality of Service, service quality) management, to meet the QoS requirements of the corresponding application business.

In order to reduce the packet header overhead, GRE (Generic Routing Encapsulation, general routing encapsulation), Inner IP, and IPSec protocol stack between the first network node and the third network node can also use GTP-U (GPRS Tunnel Protocol-User, user plane GPRS Tunneling Protocol), UDP (User Datagram Protocol, User Datagram Protocol) to replace. When using GRE, Inner IP, and IP sec protocols, an end-to-end IPSec child security channel (IPSec Child Security Association) is established between the first network node and the third network node. When the GTP-U and UDP protocols 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 an end-to-end direct connection, the second network node cannot determine the The QoS requirements of the data packets transmitted by the U tunnel can easily cause the processing of the data packets by the second network node to fail to meet the actual QoS requirements, affecting the efficiency and reliability of data packet transmission.

Contents of the invention

In view of this, the present application provides a data packet transmission method based on network quality of service, the method comprising:

Receive traffic mapping information sent by a third network node; wherein, the traffic mapping information includes a first mapping relationship between different first IP header information and different quality of service QoS information; the first IP header information includes the first network The local IP address of the node and the second IP header information; the second IP header information includes a priority attribute value configured for the first channel between the first network node and the third network node; the QoS information includes QoS parameters, or QoS parameters and QoS identifiers;

receiving a data packet to be sent sent by the third network node;

According to the first mapping relationship and the first IP header information of the data packet to be sent, obtain the second channel information and QoS parameters of the data packet to be sent; the second channel information is used to identify the first network node a second channel with a second network node;

Sending 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.

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

Determine 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; the first identifier is used to identify access to the second network node each of the first network nodes;

Determine the second channel information of the second channel between the first network node and the second network node with the first identifier, and obtain the second channel information between the second channel information and the second IP packet header information or QoS identifier. Mapping relations;

Obtaining QoS parameters, or QoS parameters and QoS identifiers of the data packets to be sent according to the first mapping relationship and the first IP header information of the data packets to be sent;

Obtain the second channel information of the data packet to be sent according to the second mapping relationship and the second IP header information in the first IP header information of the data packet to be sent, or the QoS identifier.

Optionally, the acquiring 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 relationship between the second IP packet header information or the QoS identifier and the second channel information;

or,

Obtain a second mapping relationship between the second IP packet header information or the QoS identifier included in the traffic mapping information and the second channel 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 header information of the data packet to be sent includes:

receiving 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; or,

determining the correspondence between local IP addresses of different first network nodes and first identifiers of different first network nodes according to historical data packets from different first network nodes;

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

The present application also proposes a data packet transmission method based on network quality of service, the method comprising:

Obtain the protocol data unit PDU session identifier, QoS flow identifier and QoS parameters of the data packet to be sent;

Acquiring a third mapping relationship including the PDU session identifier; wherein, the third mapping relationship is established and provided by the second network node and/or the third network node accessed by the first network node, and includes the PDU session identifier , QoS flow identifier, first channel information, second IP packet header information, and the mapping relationship between the second channel information; the first channel information is used to identify the relationship between the first network node and the third network node the first channel; the second IP packet header information includes a priority attribute value configured for the first channel between the first network node and the third network node; the second channel information is used to identify the first network a second channel between a node and said second network node;

Obtain 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;

Send 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.

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

The acquisition includes the third mapping relationship of the PDU session identifier, including:

receiving the fourth mapping relationship including the target PDU session identifier sent by the third network node;

Receive the second mapping relationship 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 relationship, obtain the first channel information and QoS identifier corresponding to the QoS flow identifier of the data packet to be sent, and/or the second IP packet header information corresponding to the first channel information;

Based on the second mapping relationship, determine the obtained second IP packet header information or the second channel information to which the QoS identifier is mapped as the second channel information of the data packet to be sent.

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

Receive a third mapping relationship including the PDU session identifier of the data packet to be sent sent by the third network node.

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

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

Send the fourth mapping relationship to the corresponding first network node.

Optionally, the PDU session resource request message also includes an N2 interface identifier of the first network node, and the method further includes:

Obtain a second mapping relationship according to the fourth mapping relationship and the N2 interface identifier of the first network node, and send the second mapping relationship to the corresponding first network node; the second mapping relationship includes the second A mapping relationship between channel information and second IP header information or QoS identifiers; the second channel information is used to identify a second channel between the first network node and the second network node;

or,

Obtain a third mapping relationship according to the fourth mapping relationship and the N2 interface identifier of the first network node, and send the third mapping relationship to the corresponding first network node; wherein the third mapping relationship includes Mapping relationship between PDU session identifier, QoS flow identifier, first channel information, second IP header information and second channel information; or PDU session identifier, QoS flow identifier, QoS identifier, first channel information, second IP header The mapping relationship between the information and the second channel information.

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

sending the first mapping relationship to a second network node;

or;

Obtain a second mapping relationship between the second channel information and the second IP header information or QoS identifier;

Sending the second mapping relationship and the first mapping relationship to a second network node; or, obtaining a fifth mapping relationship from the first mapping relationship and the second mapping relationship, and converting the fifth mapping relationship to The relationship is sent to the second network node; wherein, the fifth mapping relationship represents the mapping relationship between the first IP packet header information, QoS information, and second channel information; the QoS information includes QoS parameters, or QoS parameters and QoS identifiers .

The present application also proposes a data packet transmission device based on network quality of service, the device comprising:

A data receiving module, configured to receive traffic mapping information sent by a third network node and data packets to be sent; wherein, the traffic mapping information includes a fourth mapping relationship between different first IP packet header information and different QoS information; the The first IP header information includes the local IP address of the corresponding first network node accessing the third network node and second IP header information; the second IP header information is used to identify the corresponding first network node and the first network node The first channel between the three network nodes is determined; the QoS information includes QoS parameters and QoS identifiers;

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

The QoS control module is configured to send the data packet to be sent to the corresponding second channel 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 network node.

The PDU session resource information acquisition module is used to obtain the PDU session identification, QoS flow identification and QoS parameters of the data packets to be sent;

A third mapping relationship acquiring module, configured to acquire a first mapping relationship including the PDU session identifier; wherein, the third mapping relationship is established by a second network node and/or a third network node accessed by the first network node Provide, and include the mapping relationship between the PDU session identifier, QoS flow identifier, first channel information, second IP header information, and second channel information; the first channel information is used to identify the first network node The first channel with the third network node; the second IP packet header information includes a priority attribute value configured for the first channel between the first network node and the third network node; the second channel information identifying a second channel between the first network node and the second network node;

A second channel information determining module, configured to obtain 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;

The QoS control module is configured to send 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.

The PDU session request message receiving module is used to receive the PDU session resource request message sent by the core network; the PDU session resource request message includes a PDU session identifier, a QoS flow identifier and a QoS parameter;

The fourth mapping relationship obtaining module is used to obtain the fourth mapping relationship according to the QoS parameters; the fourth mapping relationship represents the mapping between the PDU session identifier, the QoS flow identifier, the first channel information and the second IP packet header information relationship, or represent the mapping relationship between the PDU session identifier, QoS flow identifier, QoS identifier, first channel information, and second IP packet header information; so the first channel information is used to identify the corresponding first network node and the third network A first channel between nodes; the second IP header information includes a priority attribute value configured for the first channel between the first network node and the third network node;

A fourth mapping relationship sending module, configured to send the fourth mapping relationship to a corresponding first network node.

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

The memory is used to store the first program for realizing the data packet transmission method based on the network quality of service performed by the above second network node; or store the first program for realizing the data packet transmission method based on the network quality of service performed by the above first network node Two programs; or store a third program that realizes the data packet transmission method based on the network quality of service performed by the third network node above;

The processor is configured to load and execute the first program stored in the memory to implement the data packet transmission method based on the network quality of service performed by the second network node above; or load and execute the second program stored in the memory to implement the above The data packet transmission method based on the network quality of service performed 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 quality of service performed by the third network node above.

The present application also proposes a computer-readable storage medium, on which a computer program can be stored, and the computer program can be called and loaded by a processor included in each node, so as to realize the data based on the network quality of service described in the above-mentioned corresponding node-side embodiments. Packet transfer method.

It can be seen that the present application provides a data packet transmission method based on network quality of service and related equipment. During the data packet transmission process between the first network node and the second network node, the second network node according to the third network The mapping relationship between the first IP header information sent by the node (such as the local IP address of the first network node and the second IP header information) and the QoS information determines the QoS parameters and the second channel information of the data packet to be sent; the first The network node determines the second channel information of the data packet to be sent according to the mapping relationship between the second channel information and the QoS flow identifier and other information constructed and sent by the third network node and/or the second network node, so that the first/second The second network node sends the data packet to be sent to the other party according to the obtained QoS parameters and the second channel information, which meets the end-to-end QoS requirement consistency, and because the core network is not required to build the above mapping relationship, it avoids changing the core network function Configure increased workload.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present application, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Figure 1a is a schematic diagram of an optional structure of the Sparklink user plane protocol stack based on IPSec;

Figure 1b is a schematic diagram of another optional structure of the IPSec-based Sparklink user plane protocol stack;

Figure 2 is a schematic diagram of an optional system architecture suitable for remote IP data transmission applications based on 5G integration;

FIG. 3 is a schematic diagram of a system architecture in an optional application environment for realizing the data packet transmission method based on network quality of service proposed by the present application;

FIG. 4 is a schematic flowchart of an optional example of a data packet transmission method based on network quality of service implemented by the first network node side proposed in this application;

FIG. 5 is a schematic structural diagram of an optional example of a system suitable for the network quality of service-based data packet transmission method proposed in this application;

FIG. 6 is a schematic flowchart of another optional example of a data packet transmission method based on network quality of service implemented by the first network node side proposed in this application;

FIG. 7 is a schematic flowchart of an optional example of a data packet transmission method based on network quality of service implemented by the second network node side proposed in this application;

FIG. 8 is a schematic flow diagram of another optional example of a data packet transmission method based on network quality of service implemented by the second network node side proposed in this application;

Fig. 9 is a schematic flow diagram of another optional example of a data packet transmission method based on network quality of service proposed by the present application;

FIG. 10 is a schematic diagram of a signaling flow of another optional example of a data packet transmission method based on network quality of service proposed by the present application;

FIG. 11 is a schematic diagram of a signaling flow of another optional example of a data packet transmission method based on network quality of service proposed by the present application;

FIG. 12 is a schematic structural diagram of an optional example of a data packet transmission device based on network quality of service proposed in this application;

FIG. 13 is a schematic structural diagram of another optional example of a data packet transmission device based on network quality of service proposed in this application;

FIG. 14 is a schematic structural diagram of another optional example of a data packet transmission device based on network quality of service proposed in this application;

FIG. 15 is a schematic diagram of a hardware structure of an optional example of computer equipment suitable for the method for transmitting data packets based on network quality of service proposed in this application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Today, in the remote IP data transmission application based on 5G integration, the application system architecture shown in Figure 2, the first network node (such as the managed node T-Node included in the Sparklink system of the Star Alliance, can also be the user equipment UE , which supports the non-access stratum (NAS, Non-Access Stratum) message sending and receiving node) usually by accessing the second network node (such as the management node G-Node included in the Sparklink system, the trusted non-3GPP network access point TNAP (Trusted Non-3GPP Access Point), etc.), establish a PDU (Protocol Data Unit, Protocol Data Unit) session with the 5G core network, so as to realize communication with the data network (Data Network, DN) through the core network, and the communication process This application does not describe in detail.

Combining the above descriptions of IP data transmission applications and background technologies, for the user plane protocol stack in current 5G network applications, both the first network node and the second network node can access the third network node, such as a trusted non-3GPP gateway The function (TNGF, Trusted Non-3GPP Gateway Function) node realizes different end-to-end connections, so as to realize the communication with the corresponding network element node in the 5G core network through the third network node, as shown in Figure 1a and Figure 1b above In the user plane protocol stack structure shown, the first network node and the third network node can identify different IPSec child SAs of different PDU sessions, that is, IPSec sub-secure channels, through the IP address of the Inner IP layer defined by 3GPP, and link the PDU session At least one QoS (Quality of Service, quality of service) flow included is mapped to an IPSec sub-secure channel for transmission.

It can be understood that if the GRE, Inner IP, and IPSec protocol layers in Fig. 1a and Fig. 1b are replaced with GTP-U and UDP protocol layers, the first network node and the third network node can pass the tunnel endpoint carried in the GTP-U packet header. Identify (TEID, Tunnel Endpoint Identifier), and/or the IP address carried in the IP packet header, identify different GTP-U tunnels of different PDU sessions, and map at least one QoS flow contained in the PDU session to a GTP-U tunnel . In order to facilitate the description of the data packet transmission process, the above-mentioned IPSec sub-secure channel and the GTP-U tunnel are collectively recorded as the first channel.

In practical applications, taking the Sparklink user plane protocol stack as an example, after the first network node applies to the core network to establish a PDU session, it can obtain at least one QoS flow identifier (QFI, QoS Flow Identifier) included in the PDU session provided by the core network And the corresponding QoS rules, according to the needs, you can also obtain the QoS parameters corresponding to QFI, that is, the QoS parameters of each QoS flow, such as guaranteed flow bit rate (GFBR, Guaranteed Flow Bit Rate), maximum flow bit rate (MFBR, Maximum Flow Bit Rate) Rate), packet delay budget (PDB, Packet Delay Budget), packet error rate (PER, Packet Error Rate), average window (average window), etc.). When the application layer of the first network node subsequently generates a data packet, after the first network node determines the PDU session associated with the data packet, it can determine the QFI associated with the data packet based on the QoS rule, and the implementation process will not be described in detail in this application.

In order to identify different first channels, for example, in the user plane protocol stack based on the IPSec protocol, the third network node may assign Inner IP addresses to the first network node, so that different first channels corresponding to the same PDU each have UP_IP_ADDRESS, and corresponding Differentiated Services Code Point (DSCP), and the implementation method will not be 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 side of the third network node, so that it can be subsequently used as the first channel information to indicate the corresponding first channel.

Based on the above description, in the data packet transmission application, as shown in Figure 1a and Figure 1b, the user plane protocol layers such as GRE/inner IP/IPSec or GTP-U/UDP are both the first network node and the third network node The end-to-end communication protocol layer between. The second network node can only obtain the IP header information (such as DSCP value) of the received data packet, and realize the processing of the data packet on the second channel (such as Sparklink air interface or other non-3GPP air interface), but cannot know the transmission The specific QoS requirements of the data packet will not be able to achieve precise QoS parameter control, which will lead to the inconsistency between the QoS processing implemented by the second network node based on the DSCP value and the specific QoS requirements of the corresponding data packet, and it will not be possible to truly realize the first network node. End-to-end QoS requirements for data packet transmission between nodes in the third network.

In order to solve the above problems, this application hopes that the sending end of the data packet, such as the first network node or the second network node, can accurately obtain the specific QoS parameters corresponding to the data packet, so as to meet different QoS control requirements. It is proposed that during the period when the first network node registers with the core network, the unified data management (UDM, Unified Data Management) network element of the core network passes through the access and mobility management function (AMF, Access and Mobility Management Function) network element, through the N2 interface The mapping relationship A between information such as 5QI (that is, the QoS identifier defined by 5G)/DSCP/XQI (that is, the QoS identifier defined by Sparklink)/QoS parameters is sent to the third network node. Then, the third network node sends the mapping relationship A to the corresponding first network node and the second network node it accesses respectively. In Figure 3, the first network node is T-node, and the second network node is G-node 1. The third network node is TNGF as an example for description.

Afterwards, while the first network node applies to the core network to establish a PDU session, the AMF network element in the core network can still send a PDU session resource request message to the third network node through the N2 interface, which will be as the identification of the first network node on the N2 interface , PDU session identification, at least one QFI and its corresponding QoS parameters, and data such as the mapping relationship B between 5QI and QFI are sent to the third network node, so that the third network node can be based on the mapping relationship A and the mapping relationship B , obtain the mapping relationship C between QFI/DSCP/XQI, and send it to the first network node and the second network node. In this way, when the first network node sends a data packet to the second network node, after obtaining the PDU session identifier and QFI corresponding to the data packet, the corresponding DSCP and QoS parameters can be determined according to the mapping relationship C; similarly, in the second network node After the node receives the data packet to be sent from the core network, it can use the DSCP in the IP header information to obtain the QoS parameters mapped to the data packet to be sent according to the received mapping relationship C, so as to realize the connection between the first network node and the second network node. QoS control of packet transmission between network nodes.

It can be seen that during the entire data packet transmission process, the second network node can use the obtained mapping relationship to determine the QoS parameters of the data packet to be sent transmitted through the first channel, so as to ensure that the QoS processing implemented by it is consistent with the QoS requirement of the data packet , to truly realize end-to-end QoS processing. However, in the process described above, during the establishment of the PDU session application, since the AMF of the core network will send a PDU session establishment acceptance message to the first network node, which contains QoS parameters, the first network node will receive Redundant QoS parameters cause a waste of storage resources; moreover, the AMF of the core network sends the mapping relationship A to the third network node through the N2 interface, which requires modifying the traditional N2 interface message to enable it to support the mapping relationship The transmission of A reduces the processing of messages; in addition, compared with the mapping relationship contained in the traditional PDU session request message, the core network UDM needs to establish the mapping relationship A, which requires adjustment of the UDM processing function, which increases the workload and reduces the Processing efficiency.

In order to solve the problem that the first network node receives redundant QoS parameters, this application proposes to provide corresponding indication information, that is, to indicate whether to send QoS parameters to the first network node. For example, in the above implementation process, it is possible to instruct AMF not to send The first network node feeds back the QoS parameters to solve the redundancy problem, but cannot solve the above-mentioned other technical problems.

In this regard, this application hopes to realize end-to-end QoS processing on the basis of not needing to adjust the core network standard. For example, the determination of the mapping relationship between the DSCP value of the first channel and the QoS parameter is limited to Sparklink. The third network node and/or the second network node, according to the content contained in the PDU session resource request message fed back by the core network, determines the direct or indirect mapping relationship between the different information required, and then sends the mapping relationship to the first network The node or the second network node, when sending the data packet to be sent, can determine according to the mapping relationship which second channel between the first network node and the second network node to transmit, and which QoS parameters need to be followed. QoS processing meets the requirements of data transmission, ensures the consistency of end-to-end QoS requirements, and improves the efficiency and reliability of data transmission.

It can be seen that in the data packet transmission method based on network quality of service proposed by this application, the core network side does not need to establish a mapping relationship between various information, and does not need to modify the core network function configuration code. In this way, the core network can still follow the traditional The content transmission of the PDU session resource request message does not need to transmit the mapping relationship, nor does it need to change the N2 interface message between the core network and the third network node, so that it can support the transmission of the mapping relationship, thereby reducing the workload of technicians. Efficient and reliable end-to-end QoS processing is realized.

Based on the description of the above embodiments, the 5G wireless network architecture and the 5G air interface protocol stack structure, referring to Figure 3, it is a schematic diagram of the system architecture in the application environment for implementing the network quality of service-based data packet transmission method proposed in this application. In the environment, the components of its system architecture may include but are not limited to: the first network node 100, the second network node 200, the third network node 300, and the core network 400, wherein:

The first network node 100 can be a user equipment UE or other managed nodes in 5G wireless network applications, such as the managed nodes in the Sparklink system of the Star Alliance are marked as T-Nodes (T-Node), such as smart cars, smart homes In different scenarios such as smart terminals and smart manufacturing, the device category represented by the first network node can be different, such as smartphones, tablet computers, wearable devices, smart watches, augmented reality technology (Augmented Reality, AR) devices, virtual Reality (Virtual Reality, VR) equipment, vehicle-mounted equipment, smart speakers, robots, desktop computers, etc., this application does not limit the product type of the first network node, depending on the situation.

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

The second network node 200 can be a transfer device in remote IP data transmission based on 5G integration. In the Sparklink system, it can manage nodes, namely G-Nodes (G-Nodes). Since each second network node 200 can access a or a plurality of first network nodes 100, so the second network node 200 can be used to coordinate between different first network nodes 100 for access, and between the first network node 100 for access and itself (that is, the second network node 200 The implementation process of communication between nodes 200) will not be described in detail in this application.

Among them, for the above Sparklink system, it usually includes Sparklink access layer, basic service layer and 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 realizing data segmentation and reassembly, retransmission and Flow control, encapsulation, etc.; in actual application scenarios, as shown in Figure 1b, the data of the basic application layer (such as IP data packets, etc.) can be transmitted to the Sparklink access layer through the basic service layer; it can also be directly transmitted to the Sparklink access layer The layer (as shown in FIG. 1a ) can be determined according to the scene requirements, and this application does not limit it.

In wireless communication applications, based on the wireless short-distance communication air interface technical standard CCSA TC10, the end-to-end data transmission channel between the first network node 100 and the second network node 200 can be recorded as the second channel, such as the Sparklink air interface chain The data packets to be sent between the two can finally be mapped to the Sparklink air interface for transmission, that is, mapped to the transmission channel of the DTADP layer (identified by TCID) or the logical channel of the Sparklink access layer (identified by LCID).

The third network node 300 can be the above-mentioned TNGF node, etc., as shown in Figure 1a and Figure 1b above, it can provide user plane and control plane protocols and functions, and realize communication between network nodes and the core network, and the implementation process can be combined with 5G air interface The structure of the protocol stack is determined, and this application does not describe it in detail.

The core network 400 can be used to separate the control plane and the user plane, and can transfer call requests or data requests sent by the user side to different data networks to meet service requirements. The core network of this application may be a 5G core network (i.e. 5GC), which mainly includes AMF, UPF and SMF (Session Management Function, session management function). Do elaborate.

As shown in Figure 2 above, in different application scenarios, the core network 400 can be connected to the corresponding data network DN to meet the business needs of the corresponding scenarios. detail.

It should be understood that the system architecture shown in FIG. 3 does not constitute a system limitation on the application environment of the embodiment of the present application. In actual applications, system architectures in different application environments include more or fewer equipment, or a combination of certain equipment, this application does not list them here.

Combining the application environment described in the above embodiments, the implementation process of the data packet transmission method based on network quality of service proposed in this application can be described from different angles below, but it is not limited to the implementation methods described in the following embodiments. And for the convenience of description, only the parts related to the related invention are shown in the drawings of the embodiments. In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

Moreover, words such as "a", "an", "an" and/or "the" described in this application do not refer to the singular, and may also include the plural, unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also contain other steps or elements. An element qualified by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or device that includes the element.

Among them, in the description of the embodiments of this application, unless otherwise specified, "/" means or means, for example, A/B can mean A or B; "and/or" in this article is only a description of associated objects The association relationship of indicates that there may be three kinds of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. In addition, in the description of the embodiments of the present application, "plurality" refers to two or more than two. The following terms "first" and "second" are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.

In addition, a flow chart is used in this application to illustrate the operations performed by the system or its constituent devices according to the embodiment of this application. It should be understood that the preceding or following operations are not necessarily performed in the exact order. Instead, various steps may be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or a certain step or several steps of operations can be removed from these processes, and the present application does not describe in detail one by one.

Referring to FIG. 4 , it is a schematic flowchart of an optional example of a data packet transmission method based on network quality of service implemented by the first network node side proposed in this application, that is, the data packet based on network quality of service described in this embodiment The transmission method may be performed by the first network node. This embodiment can be applied to Sparklink access. At this time, the first network node can be a T node, and the second network node can be a G node; it can also be applied to trusted non-3GPP access. At this time, the first network node can be a user equipment The UE, where the second network node is a TNAP. This can be determined according to scenario requirements, and this application does not limit the product type of the first network node. In addition, the embodiment of the present application describes the implementation process of sending a data packet from a first network node to a second network node. As shown in Figure 4, the method may include but not limited to the following steps:

Step S11, obtaining the PDU session identifier, QoS flow identifier and QoS parameters of the data packet to be sent;

In 5G network applications, combined with the schematic structural diagram of any first network node accessing the core network through the second network node and the third network node shown in Figure 6, for any first network node through the second network node After registering with the 5G core network, the first network node can apply to the 5G core network for establishing a PDU session, and after receiving the PDU session establishment request, the 5G core network can determine the PDU session identifier of the applied PDU session (used to distinguish Different PDU sessions), and information such as QoS flow identifiers (ie, QFI) and QoS parameters (ie, QoS flow-level QoS parameters) corresponding to one or more QoS flows included in the PDU session.

Afterwards, according to the obtained PDU session identifier, QFI and corresponding QoS parameters, a PDU session establishment acceptance message is formed. In this way, the first network node may receive a PDU session establishment acceptance message sent by the core network for the PDU session that it applies for establishment. As analyzed above, the PDU session identifier of the PDU session establishment acceptance message can correspond to at least one QFI, and the QFI corresponds to the QoS parameters one by one, that is, each QoS flow contained in the PDU session has a corresponding QFI and QoS parameter. According to the scenario requirements, the QoS parameters may include, but are not limited to, dynamic 5QI (QoS identifier defined by 5G) descriptors (for dynamically allocated QFIs), non-dynamic 5QI descriptors (for non-dynamically allocated QFIs), allocation and Preserve priority, GBR QoS flow information, reflective QoS attributes, additional QoS flow information, etc.

The NAS message sent by the core network to the first network node, that is, the PDU session establishment acceptance message, includes at least one QFI and corresponding QoS rules. When the QFI value is equal to the non-dynamic 5QI (that is, the QoS parameter corresponding to the 5QI can be found in the table specified in the protocol), the NAS message (PDU session acceptance message) does not include the QoS parameter. Therefore, after the first network node determines the QFI associated with the data packet to be sent, it determines the 5QI according to the QFI, and then determines the corresponding QoS parameter according to the 5QI according to the mapping relationship between the 5QI and the QoS parameter specified in the protocol. That is to say, the first network node The PDU session identifier and the QoS flow identifier of the data packet to be sent can be obtained from the core network, and then the QoS parameters mapped to the QoS flow identifier are determined according to protocol rules.

In some other embodiments, if the core network determines that the QFI value is a dynamic 5QI (that is, the corresponding 5QI cannot be found in the table corresponding to the protocol), the NAS message (PDU session acceptance message) includes the QoS parameter, that is, the core network The network may send the PDU session identifier, the QoS flow identifier and corresponding QoS parameters to the first network node. The first network node may acquire the PDU session identifier, QoS flow identifier and QoS parameters corresponding to the data packets to be sent from the core network, wherein the QoS parameters are corresponding QoS parameters determined according to the QFI associated with the data packets to be sent.

Wherein, the dynamic 5QI descriptor (Dynamic 5QI descriptor) may include priority, packet delay budget, packet error rate, 5QI, critical delay, average window, maximum data burst, extended packet delay budget, downlink (relative to the first network The data transmission direction of the node, that is, the first network node receives the data packet transmission process) CN packet delay budget, uplink (that is, the first network node sends the data packet process) CN packet delay budget and other parameters of different dimensions. The non-dynamic 5QI descriptor (Non-Dynamic 5QI descriptor) can include 5QI, priority, average window, maximum data burst, downlink CN packet delay budget, uplink CN packet delay budget, etc. GBR QoS Flow Information (GBR QoS Flow Information) can include maximum flow bit rate downlink, maximum flow bit rate uplink, guaranteed flow bit rate downlink, guaranteed flow bit rate uplink, notification control, maximum packet loss rate downlink, maximum packet loss rate uplink, list of alternative QoS parameter settings, etc. The content of QoS requirements included in the QoS parameters corresponding to each QoS flow can be determined according to actual application requirements, 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 above-mentioned PDU session identifier, at least one QFI and its corresponding QoS parameter (optional), the QoS message corresponding to the QFI Rule (that is, QoS rule), the QoS rule may include a packet filter device (Packet Filter Set). Wherein, for IP-type data packets, the parameters of its data packet filtering device may include but not limited to the parameter content shown in the following table 1:

Table 1

For Ethernet-type data packets, the parameters of the above-mentioned data packet filtering device may include but are not limited to the parameter content shown in Table 2 below:

Table 2

Based on the above analysis, when the first network node obtains that the application layer generates a data packet to be sent, the first network node may first 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. Afterwards, according to the mapping relationship between the QoS rule corresponding to the PDU session and the QFI, the data packet to be sent can be matched through the data packet filtering device to obtain the QFI of the data packet to be sent, that is, to determine which PDU session the data packet to be sent belongs to For the QoS flow, the QFI and QoS parameters of the QoS flow are determined as the QoS flow identifier and QoS parameters of the data packet to be sent. The specific acquisition process of the QoS parameters of the data packets to be sent is as described above.

Step S12, obtaining a third mapping relationship including the PDU session identifier;

Following the above description, each QoS flow included in the PDU session may be mapped to a different first channel, that is, an IPSec sub-secure channel or a GTP-U tunnel between the first network node and the third network node, so that different first Channels have QoS parameters corresponding to the QoS flow level of one or more QoS flows, and thus determine the corresponding DSCP value (determined based on IPv4 (Internet Protocol Version 4, Internet Protocol Version 4) protocol requirements), or determine For the corresponding DSCP value and IPv6 flow label (flow label), this application does not describe in detail the implementation process of determining DSCP and IPv6 flow label. In the embodiment of the present application, the above-mentioned DSCP value configured for the first channel, or the DSCP value and IPv6flow label, can be recorded as the priority attribute value, that is, for the first network node and the third network node For a channel, configure the corresponding priority attribute value and include it in the IP header information of the data packet as at least a part of the second IP header information of the data packet to be sent.

In order to improve data transmission efficiency and reliability, and meet the QoS requirements of the QoS flow where the data packet to be sent is located, etc., the user plane protocol stack structure shown in Figure 1a or Figure 1b above is taken as an example. When sending a data packet to be sent, it is necessary to first determine the QFI and QoS parameters corresponding to the data packet to be sent, and then determine which second channel (such as a transmission channel or a logical channel) the first network node uses to transmit data, so as to realize the connection between the first network node and the second network node. 2. QoS processing of network nodes, that is, end-to-end QoS processing.

In this regard, in this embodiment of the present application, in order to enable the first network node to determine the first network node that transmits the mapping of the data packet to be sent to the second network node according to one or more contents of the received PDU session resource request message. In the second channel, the first network node may obtain the third mapping relationship determined for the above-mentioned PDU session (that is, the PDU session to which the data packet to be sent is mapped) that it applies to establish.

It should be noted that the third mapping relationship may be established by the second network node and/or the third network node accessed by the first network node and sent to the first network node, 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, and may also receive a part of the mapping relationship included in the third mapping relationship sent by the third network node, and receive the third mapping relationship sent by the second network node The sent third mapping relationship includes another part of the mapping relationship, etc., and this application does not limit the way of obtaining the third mapping relationship.

It can be seen that, for the above-mentioned third mapping relationship, it may be determined by the third network node or the second network node and then sent to the first network node, or it may be determined by the third network node and the second network node and then sent to the first network node. The network node is not determined by the core network to determine the mapping relationship and sent to the third network node, without changing the core network protocol standard and functional configuration.

Wherein, the above-mentioned third mapping relationship may represent the mapping relationship among information such as PDU session identifier, QoS flow identifier, QoS identifier, first channel information, second IP packet header information, and second channel information. It needs to be explained that between different information The mapping relationship can be a direct mapping relationship or an indirect mapping relationship, which can be analyzed and described in conjunction with the context, and will not be described in detail in this embodiment. And in some implementations, the QoS identifier may not be included in the third mapping relationship, and the corresponding QoS identifier is determined according to information such as protocol rules and QoS flow identifiers when necessary.

The above-mentioned first channel information may be in user plane protocol stacks with different structures, and the content contained therein may be different. For example, in an IPSec-based user plane protocol stack, the first channel information may include the third network node for which the third network node is connected. The IP address of the inner IP layer assigned by the first channel (i.e. IPSec sub-secure channel) between network nodes, i.e. the IP address UP_IP_ADDRESS of the first network node in the user plane; in the user plane protocol stack based on GTP-U, The first channel information includes the IP address of the third network node side, the tunnel endpoint identifier TEID, etc., and this application does not describe the content configuration and implementation process of the first channel information in detail. It can be seen that the first channel information may be used to identify the first channel between the first network node and the base station node.

For the above-mentioned second IP packet header information, as analyzed above, it may include the priority attribute value for the first channel configuration between the first network node and the third network node, such as for the first channel established (such as the established IPSec For different first channels, the configured DSCP or (DSCP, IPv6 flow identifier) is often different. The above-mentioned second channel information can include the second channel identifier of the second channel (such as Sparklink air interface, non-3GPP air interface, etc., which can be determined according to the type of access network) between the first network node and the second network node. Under the type of access network, the second channel identifier may be different, which may be a transmission channel identifier TCID, a logical channel identifier LCID, and at least one of WLAN (Wireless Local Area Network, wireless local area network) access classification (AC, Access Category) one.

Combined with the system architecture described in the above system embodiments, in the actual communication process, such as in the Sparklink system application, the first network node and the second network node can communicate through the Sparklink air interface, and the first network node can communicate through the second network node Establish an end-to-end IPSec sub-secure channel or GTP-U tunnel with the third network node; as in a non-3GPP system application, the first network node and the second network node can communicate through a non-3GPP air interface (such as WLAN), and the second A network node can establish an end-to-end IPSec sub-secure channel with a third network node through the second network node, and the implementation process will not be described in detail in this application.

In combination with the above description, the QoS flow identifier and the QoS identifier of the QoS flow may have a 1:1 mapping relationship or an N:1 mapping relationship. There may be a 1:1 or N:1 mapping relationship between the QoS identifier (or QoS flow identifier) and the second IP packet header information, which may be based on the relationship between each QoS flow included in the same PDU session and each first channel to which it is mapped. The mapping relationship between them is determined. Exemplarily, if N QoS flows are mapped to one first channel, then the mapping relationship between the QoS identifier (or QoS flow identifier) and the second IP packet header information may be N:1; if one QoS flow is mapped to a first channel, then, there may be a 1:1 mapping relationship between the QoS identifier (or QoS flow identifier) and the second IP packet header information, which depends on the situation. The specific mapping relationship between them is not limited.

Step S13, according to the QoS flow identifier of the data packet to be sent and the third mapping relationship, obtain the second channel information of the data packet to be sent;

After the first network node receives the third mapping relationship corresponding to the data packet to be sent, it can query the third mapping relationship according to the determined QoS flow identifier of the data packet to be sent, and can determine the mapping relationship of the QoS flow with the QoS flow identifier The first channel information and the first packet header information of the first channel obtained can also determine the QoS identifier (such as XQI) mapped with the QoS flow identifier (QFI), and then, according to the QoS identifier and/or the second IP packet header information and The mapping relationship between the second channel information is used to obtain the second channel information corresponding to the determined QoS identifier and/or the second IP packet header information, that is, the second channel information of the data packet to be sent.

Wherein, the mapping relationship between the QoS identifier and/or the second IP 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 part of the following embodiments.

Step S14: Send 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.

In practical applications, after the first network node obtains the QoS parameter of the data packet to be sent and the second channel on which the data packet is to be transmitted, it can perform flow control on the data packet to be sent according to the QoS parameter, and pass the data packet to be sent through the The determined second channel (that is, the air interface with the determined second channel information) is transmitted to the second network node, and this application determines the QoS flow identifier, second After channel, QoS identification and other information, how to control the transmission implementation process of the data packets to be sent based on this will not be described in detail.

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 usually encapsulated according to the obtained relevant information, so that the second network node can From the IP header information of the packet, obtain information such as the required DSCP or DSCP+IPv6 flow identifier, and continue forwarding to the third network node.

Exemplarily, for an IPSec-based user plane protocol stack, the first network node may add a GRE header to the header of the data packet to be sent, the GRE header may contain the QFI corresponding to the data packet to be sent, and then continue to encapsulate the Inner IP header , if the source address and target address are written in the Inner IP packet header, the source address can be the UE_IP_ADDRESS allocated by the third network node to the first network node after the first network node accesses the third network node, and the target address can be The first channel information, that is, the user-side IP address assigned to the first network node for the first channel, that is, UP_IP_ADDRESS, can continue to encapsulate the IPSec packet header and the IP packet header. Wherein, the IP header of the final encapsulation contains the IP address of the first network node, such as the intranet IP address or local IP address obtained by the first network node, which can be used by the second network node based on the local IP address of the first network node The address identifies the identifier (referred to as the first identifier) used by the corresponding first network node on the Sparklink or non-3GPP air interface, such as the Sparklink identifier or MAC address, so as to realize communication with the first network node accordingly.

Afterwards, in the Sparklink user plane protocol stack as shown in Figure 1a, since the Sparklink air interface does not include the DTADP protocol layer, the first network node completes the encapsulation of the IP layer, and the encapsulated IP data packet (that is, the data packet to be sent) can be Continue to write to Sparklink’s media access layer for encapsulation, and write the above-identified second channel information in the media access layer header, such as the logical channel identifier LCID, which is the second channel identifier, and encapsulate it into the Sparklink physical layer, and finally encapsulate The obtained 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 Figure 1b, since the Sparklink air interface contains the DTADP protocol layer, after the first network node is encapsulated into the IP layer, it can continue to encapsulate the DTADP protocol layer header so that the header includes the second channel such as TCID Information, after that, perform Sparklink access layer (make its header include the second channel identifier such as LCID) and physical layer encapsulation according to the method described above, and send the final encapsulated data packet to be sent through the second channel to the second network node.

It should be noted that for user plane protocol stacks of other structures, after obtaining the information required for the encapsulation of the data packets to be sent, encapsulation can be performed layer by layer according to the user plane protocol stack, and the final encapsulated data packets to be sent can be determined by The second channel is sent to the second network node, and the implementation process is not described in detail in this application.

To sum up, in the embodiment of the present application, when the application layer obtained by any first network node generates a data packet to be sent, the PDU session identifier of the PDU session corresponding to the data packet to be sent, and the data packet to be sent can be obtained The QoS flow identifier and QoS parameters of the QoS flow corresponding to the packet (the QoS parameters can be determined by the first network node, or sent after being determined by the core network), and can also receive the third network node and/or the second network node after the establishment of the sent The above-mentioned third mapping relationship, in this way, based on the third mapping relationship and the QoS flow identifier corresponding to the data packet to be sent, the second channel information of the second channel used to transmit the data packet to be sent can be determined, so as to realize the first network The end-to-end QoS processing between the node and the second network node meets the QoS requirements of the data packets to be sent. And in the whole implementation process, there is no need for the core network to establish the above mapping relationship, and it is transmitted to the third network node through the N2 interface, so there is no need to change the core network function configuration, which reduces the core network configuration workload and improves data transmission efficiency. and reliability.

Referring to FIG. 6 , it is a schematic flowchart of another optional example of a data packet transmission method based on network quality of service implemented by the first network node side proposed in this application. The embodiment of this application may be a network-based method described in the above embodiments. An optional fine-grained implementation of the quality of service packet transmission method, but not limited to this optional fine-grained implementation. The method may be performed by the first network node, and as shown in FIG. 6, the method may include:

Step S21, obtaining the PDU session identifier, QoS flow identifier and QoS parameters of the data packet to be sent;

For the implementation method of step S21, reference may be made to the description of the corresponding part of the above embodiment, and details are not described in this embodiment.

Step S22, receiving the fourth mapping relationship sent by the third network node;

Combined with the description of the corresponding part of the above embodiment, in the embodiment of the present application, the above third mapping relationship is divided into two parts, the fourth mapping relationship and the second mapping relationship, the fourth mapping relationship can represent the PDU session identifier, QoS flow identifier (i.e. one or more QFI), QoS identifier, first channel information and the mapping relationship between the second IP header information, or indicate the PDU session identifier, QoS flow identifier, first channel information and the second IP header information mapping relationship. 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 above-mentioned second mapping relationship may represent the mapping relationship between the second channel information and the second IP packet header information and/or QoS identifier, which may be determined by the second network node according to the information sent by the third network node and sent to the first network node. Wherein, regarding the implementation method of determining the fourth mapping relationship by the third network node and the implementation method of determining the second mapping relationship by the second network node, reference may be made to the implementation of the network quality-of-service-based data packet transmission method described below from the corresponding node side. For example, the embodiment of the present application will not be described in detail here.

Step S23, based on the fourth mapping relationship, obtain the first channel information, the second IP packet header information and the QoS identifier corresponding to the QoS flow identifier of the data packet to be sent;

As analyzed above, during the process of establishing a PDU session application, the core network can determine the QoS flows included in the established PDU session, and the QoS flow identifiers and QoS parameters corresponding to each QoS flow, and the third network node can , determine which first channel each QoS flow is mapped to, determine the first channel information of each first channel, and also determine the QoS identifier corresponding to each QoS flow identifier, and the implementation process will not be described in detail.

Based on this, after the first network node obtains the QoS flow identifier of a certain QoS flow of the PDU session mapped by the data packet to be sent, it can query the above-mentioned fourth mapping relationship sent by the third network node, and gradually analyze and determine the corresponding QoS flow of the data packet to be sent. The first channel information, the second IP packet header information and the QoS identifier.

Step S24, receiving the second mapping relationship sent by the second network node;

Step S25, based on the second mapping relationship, determine 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 sent;

In combination with the above description of the second mapping relationship, in practical applications, the above-mentioned Whether the fourth mapping relationship contains a QoS identifier 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. The content of the relationship is not limited and may vary depending on the circumstances.

Step S26, according to the QoS parameter of the data packet to be sent, send 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.

For the implementation process of how the first network node performs data packet encapsulation according to the user plane protocol stack based on the obtained information, and then sends the final encapsulated data packet to the second network node through the second channel, you can refer to the above The description of the corresponding part of the embodiment of the paper, the embodiment of the present application will not be described in detail here.

To sum up, in the embodiment of the present application, when the first network node needs to send a data packet to be sent to the second network node, the first network node can use the PDU session identifier, QoS flow identifier, and the second network node provided by the third network node. The fourth mapping relationship between the two IP header information and/or the QoS identifier (whether it includes the QoS identifier, whether it is consistent with whether the second mapping relationship includes the QoS identifier), to obtain the second IP header information or the QoS identifier corresponding to the data packet to be sent . Afterwards, according to the second mapping relationship between the corresponding second IP packet header information or QoS identifier and the second channel information provided by the second network node, the second channel information corresponding to the data packet to be sent is determined, such as the second channel information such as TCID/LCID, etc. The channel identifier determines which second channel the first network node passes through according to what QoS parameters, and sends the encapsulated data packet to be sent to the second network node to realize QoS control between the first network node and the second network node .

Based on the data packet transmission method based on network quality of service described in the above embodiments, in practical applications, since the relative positional relationship between the first network node and the second network node will change, and the signal coverage of the second network node The range is limited, combined with the mobility characteristics of network nodes, within the coverage of the first network node A moving from the currently accessed second network node B to the second network node C, and the second network node B and the second network node When the second network node C is connected to the same third network node, taking the Sparklink system as an example, the first network node A is connected to the third network node through the second network node B, and can send the first network node to the third network node The identification of A communicating in Sparklink; after the first network node A accesses the second network node C, it can also send its identification in Sparklink communication to the third network node through the second network node C. At this time, the third network node It can be known that the first network node A accessed through the second network node C is the first network node A originally accessed through 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 also include the first network node A’s information in the Sparklink The air interface identifier (that is, the identifier used when the first network node A and the second network node C communicate through Sparklink), and then, in combination with the above embodiment description, the second network node C can obtain the third mapping relationship and send it to The implementation process of the first network node A is not described in detail.

For the case where 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, and the first network node Node A can send to the third network node 2 the identity of the second network node B in Sparklink and the identity of the first network node A in Sparklink, so that the third network node 2 can use the previously obtained second network node and the first network node relationship, or send a message to other third network nodes around, asking whether the second network node B is connected to the third network node around, and obtain the context information of the corresponding first network node A, such as the third network node 1 to the first network node The corresponding mapping relationship sent by network node A/second network node B, the content of the mapping relationship can be combined with the description of the corresponding part of the above embodiment, so as to send the required mapping relationship to the second network node C accordingly, so that the second network node C The second network node C can determine the third mapping relationship based on this and send it to the first network node A, and the implementation process will not be described in detail.

In some other embodiments proposed in this application, the third mapping relationship described in the above embodiments may also be determined by the third network node and then sent to the first network node, and the determination of the third mapping relationship on the third network node For the implementation process, reference may be made to the description of the corresponding part of the embodiment below, and details are not described in this embodiment here. And regarding the implementation process of the first network node determining the second channel information of the data packet to be sent according to the third mapping relationship sent by the third network node, and sending the data packet to be sent to the second network node through the second channel, please refer to The description of the corresponding parts of the above embodiments will not be repeated in this embodiment of the present application.

In some other embodiments proposed by this application, for the data packet transmission method based on the network quality of service described in the above system embodiment, in order to avoid the QoS parameter redundancy problem caused by this method to the first network node, reduce the overhead During the implementation 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. In order to implement this PDU session establishment acceptance message feedback mode, the first network node may obtain QoS parameter indication information for indicating whether the core network feeds back the QoS parameter to the first network node,

Afterwards, before the first network node sends a registration request message (that is, a kind of NAS message) to the core network through the second network node and the third network node, the above-mentioned QoS parameter indication information may be added to the registration request message and then sent, so as to From this, the core network can know whether to send the QoS parameter to the first network node registered this time. The QoS parameter indication information can take a value of 1 or true, indicating that the NAS message fed back by the core network (for example, a registration request acceptance, or a PDU session establishment acceptance message, or a PDU session modification acceptance message) needs to include QFI corresponding QoS parameters. The QoS parameter indication information can take a value of 0 or false, indicating that the NAS message fed back by the core network (such as registration request acceptance, or PDU session establishment acceptance message, or PDU session modification acceptance message) 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 as long as the registration request message contains the QoS parameter indication information, it means that the NAS message fed back by the core network (such as registration request acceptance, or PDU session establishment acceptance message , or the PDU session modification acceptance message) does not need to include the QoS parameters corresponding to the QFI.

It should be noted that the specific form of the above-mentioned QoS parameter indication information can also be Sparklink indication information or the 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, etc., so that It is determined that the NAS message fed back by the core network (for example, the registration request acceptance, or the PDU session establishment acceptance message, or the PDU session modification acceptance message) does not need to include the QoS parameter corresponding to the QFI.

In practical applications, the above-mentioned different QoS parameter indication information may be sent by the first network node to the AMF of the core network, or forwarded to the AMF by the third network node, or stored as part of the subscription information of the first network node in the The UDM of the core network enables the AMF to obtain the corresponding QoS parameter indication information from the requested subscription information. This application does not limit the implementation process of the AMF of the core network to obtain each indication information, and it depends on the situation.

Based on the above analysis, the first network node sends a registration request message (not including the 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 while carrying the first An identifier of a network node on the N2 interface and required QoS parameter indication information, the QoS parameter indication information may be determined by the third network node or the second network node, for example, the user location sent by the second network node to the third network node The Sparklink indication contained in the information (ULI), or the Sparklink identification of the second network node in the user location information, so that the third network node can determine the first network node as the managed node of Sparklink according to the Sparklink indication or Sparklink identification. The process of obtaining indication information for non-3GPP nodes is similar, and will not be described in detail in this application.

After the AMF sends the obtained first network node's identifier and QoS parameter indication information to the SMF, at the stage of the first network node applying for PDU session establishment/modification, the SMF can determine the feedback PDU session according to the QoS parameter indication information in the indication information Whether the QoS parameter corresponding to the QoS flow identifier is included in the establishment acceptance message. If the core network determines not to send QoS parameters to the first network node based on the QoS parameter indication information, it may instruct the third network node that the fourth mapping relationship established includes the QoS parameter corresponding to the QoS flow identifier, that is, the above fourth mapping relationship It can represent the mapping relationship between the PDU session identifier, QoS parameter, QoS flow identifier, QoS identifier (may not be included), the first channel information, and the second IP packet header information, and the fourth mapping about how the first network node uses the content Relationship, the implementation process of determining the second communication information of the data packet to be sent is similar to the implementation process described in the above embodiment, and will not be described in detail in this application.

Referring to FIG. 7 , it is a schematic flowchart of an optional example of a data packet transmission method based on network quality of service implemented by the second network node side proposed in this application, that is, the data packet based on network quality of service described in this embodiment The transmission method may be performed by the second network node, and may describe the implementation process of the second network node sending data packets to the first network node. This method may be applicable to Sparklink access or trusted non-3GPP access network scenarios, such as As shown in Figure 7, the method may include:

Step S31, receiving traffic mapping information sent by the third network node;

In the embodiment of the present application, 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 not limited to different first IP headers A first mapping relationship between information and different QoS information. It should be noted that the first IP header information may include the local IP address of the first network node (such as the local IP address assigned by the first network node in Sparklink) and the second IP header information. Regarding the second IP header information For the content and functions of , refer to the description of the corresponding part of the above embodiment. The QoS information may include QoS parameters, or include QoS parameters and QoS identifiers (such as XOI or 5QI), depending on the situation. Regarding the respective contents of the QoS parameter and the QoS identifier, reference may be made to the description in the corresponding part of the above embodiment, and details are not described in this embodiment.

Step S32, receiving the data packet to be sent sent by the third network node;

Step S33, according to the first mapping relationship included in the traffic mapping information and the first IP header information of the data packet to be sent, obtain the second channel information and QoS parameters of the data packet to be sent.

Referring to the user protocol stack structure shown in Figure 1a and Figure 1b above, the second network node receives the data packet to be sent sent by the core network forwarded by the third network node, and can obtain the IP header information from the header of the data packet to be sent, record is the first IP header information, combined with the relevant description of the content of the first IP header information above, after the second network node obtains the local IP address of the first network node, it can determine the first identifier of its corresponding first network node, For example, the Sparklink air interface identifier, that is, the identifier of the first network node at the Sparklink media access layer MAC layer, etc.; for non-3GPP access, it may be a non-3GPP air interface identifier, such as a MAC address. So that the second network node can distinguish different first network nodes that are accessed based on this.

Afterwards, the second network node may acquire the second channel information of the corresponding second channel between the first network node and the second network node with the determined first identifier, and determine different second IP packet header information and/or QoS identifiers The mapping relationship with the second channel information, that is, the second mapping relationship described above, so as to combine the first mapping relationship between the first IP header information sent by the third network node and the QoS information to obtain the second IP header information and/or second channel information mapped to the QoS identifier.

It should be noted that the foregoing second mapping relationship may be determined by the second network node, and sent by the second network node to the first network node. The above-mentioned second mapping relationship may also be determined by the third network node, and then included in the traffic mapping information and sent to the second network node. This application does not limit this, and it depends on the situation.

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

In practical applications, this application does not address how the second network node determines the first identifier of the first network node based on the local IP address of the first network node in the first IP header information of the data packet to be sent. limit. In a possible implementation manner, the second network node directly receives the first identifier of the first network node sent by the third network node and corresponding to the local IP address of the first network node. For example, the traffic mapping information sent by the third network node to the second network node may also include the first identifier of the first network node accessing the second network node, such as the communication between the first network node and the second network node through Sparklink The air interface identification used at the time, or the air interface identification other than 3GPP.

In yet another possible implementation, if the first network node has ever sent a data packet to the second network node, since the first network node sends the packet to the second network node through the corresponding air interface based on the assigned local IP address data packets, then the second network node can determine the correspondence between the local IP addresses of different first network nodes and the first identifiers of different first network nodes according to the historical data packets from different first network nodes, so that , the second network node can obtain the first identifier of the first network node according to the corresponding relationship and the local IP address of the first network node in the first IP header information of the data packet to be sent, thereby identifying that the data packet to be sent will be received of the first network node.

Step S34: Send 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 order to solve the problem that the second network node implements different processing methods for the data packets to be sent on the second channel based on the DSCP value in the header of the data packets to be sent, it is difficult to satisfy the QoS of the first channel for transmitting the data packets to be sent Requirements, the technical problem that the end-to-end QoS control cannot be truly realized. In this application, the third network node determines the first mapping relationship as described above based on the information sent by the core network. In this way, the second network node needs to report to the first network When a node sends a data packet to be sent, it can be based on the local IP address of the first network node contained in the first IP header information of the data packet to be sent, the second IP header information or the QoS identifier, and the received first mapping relationship , determine the QoS parameters of the data packets to be sent, and which second channel to transmit the data packets to be sent, so as to ensure that the second network node sends the data packets to be sent to the first network node, satisfying various QoS of the data packets to be sent The requirement is to ensure that the end-to-end QoS requirement between the first network node and the third network node is consistent with the end-to-end QoS requirement between the first network node and the second network node.

Referring to FIG. 8, it is a schematic flow diagram of another optional example of a data packet transmission method based on network quality of service implemented by the second network node side proposed in this application. As shown in FIG. 8, the method may include:

Step S41, receiving traffic mapping information sent by the third network node;

Different from the above embodiments, in this embodiment, the traffic mapping information received by the second network node may include the above-mentioned first mapping relationship, and the relationship between the second channel information and the second IP packet header information and/or QoS identifier For the second mapping relationship, the acquisition process of the second mapping relationship can be combined with the description of the corresponding part of the above embodiment.

In practical applications, the third network node can determine the second network node accessed by the first network node and the first network The IP address of the node, such as the IP address assigned by the first network node to access the third network node, or the IP address assigned by the third network node to the corresponding first network node when the GTP-U tunnel is established. In order to send a data packet to the second network node, the IP address can be written into the data packet header and sent to the second network node as part of the first IP header information, and then the second network node can follow this embodiment The proposed data packet transmission method based on network quality of service implemented by the second network node side forwards the data packet sent by the third network node to the first network node, and ensures the consistency of end-to-end QoS requirements.

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

Step S43, according to the first mapping relationship included in the traffic mapping information, obtain the QoS parameter mapped to the first IP header information of the data packet to be sent;

Step S44, according to the second mapping relationship contained in the traffic mapping information, the second channel information corresponding to the second IP header information in the first IP header information of the data packet to be sent is determined as the second channel information of the data packet to be sent ;

In some other embodiments proposed in this application, the second network node may also obtain the QoS parameter and QoS identifier mapped to the first IP header information of the data packet to be sent according to the first mapping relationship, and then, according to the second mapping relationship, The second channel information corresponding to the QoS identifier is determined as the second channel information of the data packet to be sent, and the implementation process is not described in detail in this application. Wherein, the second mapping relationship may be established by the third network node, or may be established by the second network node itself, which is not limited in this application.

In some other embodiments proposed in this application, the third network node may also form the above-mentioned first mapping relationship and the second mapping relationship into a fifth mapping relationship, that is, the first IP packet header information, QoS information and second channel information directly send it 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: Send 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.

To sum up, in the implementation process that the third network node needs to send data packets to the first network node through the second network node, the second network node can receive the first IP packet header information sent by the third network node (the first network node's local IP address and the second IP packet header information), QoS information (QoS parameters, or the combination information of QoS parameters and QoS identifiers) and the mapping relationship between the second channel information, based on the mapping relationship, the second network node can determine the Send the QoS parameters and second channel information mapped by the first IP header information in the header of the data packet, that is, know the QoS requirements for transmitting the data packet to be sent, and which second channel is used to transmit the data packet to be sent, and then , the data packet to be sent can be sent to the first network node through the determined second channel according to the QoS parameter, so as to ensure the QoS processing between the first network node and the second network node, and the data packet to be sent The QoS requirements are consistent, and the end-to-end QoS control is truly realized.

Referring to FIG. 9, it is a schematic diagram of a signaling flow of another optional example of a data packet transmission method based on network quality of service proposed in this application. As shown in FIG. 9, the method may include:

Step S51, the third network node receives the PDU session resource request message sent by the core network;

The first network node described in the above embodiments registers with the core network. After the registration is completed, the first network node applies to the core network for the description content of establishing a PDU session. After the core network receives the PDU session establishment request, it can generate a corresponding PDU session request message, which may include but not limited to the PDU session identifier of the PDU session applied for establishment, the QoS flow identifier and QoS parameters corresponding to each QoS flow contained in the PDU session, etc., the application of the PDU session request message The acquisition process is not described in detail.

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

In combination with the description of the corresponding part of the above embodiment, the fourth mapping relationship may represent the mapping relationship between the PDU session identifier, the QoS flow identifier, the QoS identifier, the first channel information, and the second IP packet header information; or represent the PDU session identifier, The mapping relationship between the QoS flow identifier, the first channel information, and the second IP header information, and the meaning of each information contained in the mapping relationship can be combined with the description of the corresponding part of the above embodiment, and will not be described in this embodiment.

In practical applications, in the process of determining the fourth mapping relationship, the third network node may obtain the first correspondence between the corresponding QoS flow identifier and the first channel information according to the received QoS parameters of each QoS flow relationship, such as mapping QoS flows with similar QoS parameters to a first channel, determining the mapping relationship between the QoS flow identifiers corresponding to these similar QoS parameters and the first channel information of the first channel, which is recorded as the first corresponding relationship, It can be a 1:1 or N:1 mapping relationship. Regarding the configuration method of the first channel information, it can be combined with the description of the corresponding part of the above embodiment. This embodiment will not describe it in detail. It can be understood that the first channel information of different first channels is different. Therefore, the first channel The information may be used to identify a first channel between the third network node and the first network node connected to the third network node;

Afterwards, the third network node can configure corresponding priority attribute values such as DSCP/(DSCP and IPv6 flow identifier) for each first channel to form the second IP packet header information of the first channel, that is, the second The IP packet header information includes a priority attribute value configured for the first channel between the first network node and the third network node. It can be seen that there may be a second correspondence relationship of one-to-one correspondence between the second IP packet header information and the above-mentioned determined first channel information of the first channel. According to the QoS parameter of the local IP address of the first network node, the corresponding QoS identifier can be obtained, so in combination with the correspondence described above, the third correspondence between the QoS identifier and the QoS flow identifier can be determined, such as 1:1 mapping relationship. In this way, the third network node may generate the fourth mapping relationship including the above content by combining the obtained first correspondence relationship, second correspondence relationship and third correspondence relationship.

Step S53, the third network node obtains the third mapping relationship according to the fourth mapping relationship and the N2 interface identifier 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, it can also determine the second network node accessed by the first network node according to the identifier of the first network node on the N2 interface included in it, and The local IP address of the first network node, so as to determine the first identification of the first network node (ie, the air interface identification of the access network) according to the IP address, and obtain the first network node corresponding to the first identification. For the second channel information, thereafter, a mapping relationship between the second channel information and the second IP header information and/or QoS identifier may be established, which is denoted as the second mapping relationship. Afterwards, the third network node may form a third mapping relationship according to the foregoing fourth mapping relationship and the second mapping relationship.

In some other embodiments, the third network node may directly send the fourth mapping relationship and the second mapping relationship to the corresponding first network node, so that the first network node implements the second network access to it accordingly. The node sends the data packet to be sent, and the implementation process may refer to the content of the corresponding embodiment described above from the side of the first network node.

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

Step S55, the first network node obtains the PDU session identifier, QoS flow identifier and QoS parameters of the data packet to be sent;

Step S56, the first network node obtains 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;

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;

The implementation process of step S54 to step S57 may be combined with the description of the corresponding part of the above embodiment, and will not be described in detail in this embodiment.

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

In practical applications, if wired communication is used between the second network node and the third network node, the second network node can directly forward the received data packet to be sent to the third network node through the wired communication channel, and then report to the core network, and then sent to the corresponding data network by the core network. In some embodiments, the second network node may also determine the to-be-sent packet header information according to the received packet header information, such as the first channel information, QFI, XQI, second IP packet header information, etc., and the obtained corresponding mapping relationship. send the QoS parameter of the data packet, so that the data packet to be sent is forwarded to the third network node according to the QoS parameter. Make restrictions, depending on the situation.

To sum up, in this embodiment of the application, the third network node can obtain the third mapping relationship of the above content according to the content of the PDU session request message sent by the core network, and send it to the corresponding first The network node is the first network node that applies for establishing the corresponding PDU session. In this way, when the first network node needs to report the data packet to be sent generated by the application layer, it can directly determine the data to be sent based on the third mapping relationship The first channel information, the second IP header information, the QoS parameter and the second channel information of the packet, so as to use the first channel information, the second IP header information, and the second channel information in combination with the user plane protocol stack to realize the processing of the data packets to be sent Layer-by-layer encapsulation, and then according to the obtained QoS parameters, the encapsulated data packets to be sent are sent to the second network node through the second channel, and forwarded by the second network node to the third network node. Send to the corresponding data network to meet the corresponding application requirements.

Referring to FIG. 10 , it is a schematic flow diagram of another optional example of a data packet transmission method based on network quality of service proposed in this application. As shown in FIG. 10 , the method may include:

Step S61, the third network node receives the PDU session resource request message sent by the core network;

Step S62, the third network node obtains the fourth mapping relationship according to the QoS parameter in the PDU session request message;

Step S63, the third network node sends the fourth mapping relationship to the corresponding first network node;

For the implementation process of step S61 to step S63, reference may be made to the description of the corresponding part of the above embodiment.

Step S64, the third network node obtains the first mapping relationship according to the PDU session resource request message;

In the embodiment of the present application, the first mapping relationship may represent the mapping relationship between different first IP header information and different QoS information, for example, the first IP header information includes the local IP address of the corresponding first network node connected to the third network node address and second IP packet header information. As analyzed above, according to the identifier of the first network node in the N2 interface in the PDU session resource request message, the local IP address of the corresponding first network node and the second network node accessed by the first network node can be obtained, and then, can be combined with Other information in the PDU session resource request message is used to determine the QoS parameter and QoS flow identifier mapped to the local IP address of the first network node, obtain the QoS identifier corresponding to the QoS flow identifier, and obtain the first mapping relationship, but not limited to Based on this mapping relationship acquisition method.

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

In practical applications, the third network node may send the first mapping relationship as traffic mapping information to the second network node accessed by the first network node.

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

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

Step S67, the second network node sends the second mapping relationship to the first network node.

For the implementation process of 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, please refer to The description of the corresponding parts of the above embodiments will not be repeated in this embodiment.

Referring to FIG. 11 , it is a schematic flow diagram of another optional example of a data packet transmission method based on network quality of service proposed in this application. As shown in FIG. 10 , the method may include:

Step S71, the third network node receives the PDU session resource request message sent by the core network;

Step S72, the third network node obtains the first mapping relationship according to the PDU session resource request message;

Regarding the implementation process of step S71 and step S72, reference may be made to the description of the corresponding part of the above embodiment.

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

In the embodiment of the present application, the fifth mapping relationship may represent the mapping relationship between the first IP packet header information, QoS information (which includes QoS parameters, or QoS parameters and QoS identifiers, such as XQI, 5QI, etc.) and the second channel information , the third network node may include the fifth mapping relationship in the traffic mapping information and send it to the second network node. According to requirements, the traffic mapping information may also include a first identifier of the first network node accessing the base station, such as an air interface identifier of the Sparklink.

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

Step S75, the second network node receives the data packet to be sent 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 sent according to the fifth mapping relationship and the first IP header information of the data packet to be sent;

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 the embodiment of the present application, the third network node may determine different first IP packet header information and different QoS information, as well as the mapping relationship between them, for the related information of each first network node accessed, and then, may According to the PDU session resource request message sent by the core network for the PDU session established by each first network node, the above-mentioned fifth mapping relationship is obtained and sent to the second network node. In this way, the second network node sends data to the first network node In the case of a data packet, the QoS parameter and the second channel information of the data packet can be determined directly according to the fifth mapping relationship, that is, the QoS requirements of the data packet to be sent for the first network node are known, thereby ensuring that the data packet In the process of sending the packet to the first network node, the consistency of end-to-end QoS processing.

Based on the description of the above embodiment, if the first network node A moves from the currently accessed second network node B to the coverage of the second network node C, and the second network node B is connected to the second network node C In the case of the same third network node, taking the Sparklink system application scenario as an example, combined with the above description of the characteristics of network node mobility, the third network node knows that the first network node it accesses through the second network node C After A is the first network node A originally accessed through the second network node, the third network node can send the traffic mapping information including the fifth mapping relationship to the second network node C, so that the second network node C According to this, the distribution of data packets is realized, and the end-to-end QoS requirements are met. For the case where the second network node B and the second network node C are connected to different third network nodes, refer to the description of the corresponding part above, and this embodiment will not describe in detail.

Referring to FIG. 12, it is a schematic structural diagram of an optional example of a data packet transmission device based on network quality of service proposed in this application. The device can be deployed on the first network node. As shown in FIG. 12, the device can include:

PDU session information acquisition module 110, used to obtain the protocol data unit PDU session identification, quality of service QoS flow identification and QoS parameters of the data packet to be sent;

The third mapping relationship acquiring module 120, configured to acquire a third mapping relationship including the PDU session identifier;

Wherein, the third mapping relationship is established and provided by the second network node and/or the third network node accessed by the first network node, and includes the PDU session identifier, QoS flow identifier, first channel information, second IP A mapping relationship between header information and second channel information; the first channel information is used to identify the first channel between the first network node and the third network node; the second IP header information includes information for the first The priority attribute value of the first channel configuration between a network node and the third network node; the second channel information is used to identify the second channel between the first network node and the second network node aisle;

The second channel information determination module 130 is configured to obtain 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;

The QoS control module 140 is configured to send 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.

In some embodiments, the above-mentioned third mapping relationship includes a fourth mapping relationship and a second mapping relationship, and the fourth mapping relationship represents the relationship between the PDU session identifier, the QoS flow identifier, the first channel information, and the second IP packet header information. The mapping relationship between, or the mapping relationship between 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 relationship represents the second channel information and the The second IP packet header information or the mapping relationship between the QoS identifiers. In this case, the above-mentioned third mapping relationship acquisition module 120 may include:

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

A second mapping relationship receiving unit, configured to receive the second mapping relationship sent by the second network node.

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

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

The second channel information determining unit is configured to determine, based on the second mapping relationship, the obtained second IP packet header information or the second channel information to which the QoS identifier is mapped, as the second channel information of the data packet to be sent. Two channel information.

In some other embodiments, the above-mentioned third mapping relationship acquisition module 120 may also include:

The third mapping relationship receiving unit is configured to receive the third mapping relationship including the PDU session identifier of the data packet to be sent sent by the third network node.

Referring to FIG. 13 , it is a schematic structural diagram of another optional example of a data packet transmission device based on network quality of service proposed in this application. The device can be deployed on a second network node. As shown in FIG. 13 , the device can include:

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

Wherein, the traffic mapping information includes a first mapping relationship between different first IP header information and different QoS information; the first IP header information includes a local IP address of a first network node and second IP header information; The second IP header information includes a priority attribute value configured for the first channel between the first network node and the third network node; the QoS information includes QoS parameters, or includes QoS parameters and QoS identifiers;

A data packet to be sent receiving module 220, configured to receive a data packet to be sent 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 header information of the data packet to be sent;

Wherein, the second channel information is used to identify the 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 channel 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 Two network nodes.

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

The first determining unit is configured to determine the first identification 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; the first identification is used to identify the access into each first network node of said second network node;

A second mapping relation acquiring unit, configured to determine second channel information of a second channel between the first network node with the first identifier and the second network node, and acquire the second channel information and the second IP packet header A second mapping relationship between information or QoS identifiers;

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

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

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

The first receiving unit is configured to receive 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; or,

A correspondence determining unit, configured to determine the correspondence between local IP addresses of different first network nodes and first identifiers of different first network nodes according to historical data packets from different first network nodes;

The third obtaining unit is configured to obtain the first identifier of the first network node according to the corresponding relationship and the local IP address of the first network node in the first IP header information of the data packet to be sent to obtain the first network Second channel information corresponding to the local IP address of the node.

In some other embodiments, the above-mentioned second mapping relationship obtaining unit may include:

A first establishing unit, configured to establish a second mapping relationship between the second IP packet header information or the QoS identifier and the second channel information; or,

The fourth obtaining unit is 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 QoS identifier.

Based on the description of the above embodiments, the device may also include:

The second mapping relationship sending module is configured to send the second mapping relationship to the first network node, so that the first network node determines to send the information of the first network node to the second network node according to the second mapping relationship Second channel to send packets.

Referring to FIG. 14 , it is a schematic structural diagram of another optional example of a data packet transmission device based on network quality of service proposed in this application. The device may be deployed on a third network node. As shown in FIG. 14 , the device may include:

The PDU session resource request message receiving module 310 is used to receive the PDU session request message sent by the core network; the PDU session resource request message includes 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 the embodiment of the present application, the fourth mapping relationship may represent the mapping relationship between the PDU session identifier, QoS flow identifier, first channel information, and second IP header information; or represent the PDU session identifier, QoS flow identifier, QoS The mapping relationship between the identification, the first channel information, and the second IP header information; so the first channel information is used to identify the first channel between the corresponding first network node and the third network node; the second IP header information including a priority attribute value configured for the first channel between the first network node and the third network node;

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

In some other embodiments, the above PDU session request message also includes the N2 interface identifier of the first network node, and the device may also include:

A second mapping relationship obtaining module, configured to obtain a second mapping relationship according to the second mapping relationship and the N2 interface identifier of the first network node; the second mapping relationship represents the second channel information and the second IP packet header A mapping relationship between information and/or QoS identifiers; the second channel information is used to identify a second channel between the first network node and the second network node;

A second mapping relationship sending module, configured to send the second mapping relationship to a corresponding first network node;

In some other embodiments, the above PDU session resource request message also includes the N2 interface identifier of the first network node, and the device may also include:

The third mapping relationship obtaining module is configured to obtain a third mapping relationship according to the second mapping relationship and the N2 interface identifier of the first network node; the third mapping relationship represents a PDU session identifier, a QoS flow identifier, a first The mapping relationship between channel information, second IP header information, and second channel information; or the mapping between PDU session identifiers, QoS flow identifiers, QoS identifiers, first channel information, second IP header information, and second channel information relation.

A third mapping relationship sending module, configured to send the third mapping relationship to the first network node.

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

The first mapping relationship obtaining module is configured to obtain a first mapping relationship according to the PDU session request message; wherein the first mapping relationship represents a mapping relationship between different first IP packet header information and different QoS information, and the first mapping relationship An IP header information includes the local IP address of the first network node and the second IP header information;

a first mapping relationship sending module, configured to send the fourth mapping relationship to a second network node;

or;

The second mapping relationship obtaining module is used to obtain the second mapping relationship between the second channel information and the second IP packet header information or QoS identifier;

A mapping relationship sending module, configured to send the second mapping relationship and the first mapping relationship to the second network node; or, obtain a fifth mapping relationship from the first mapping relationship and the second mapping relationship, and send sending the fifth mapping relationship to a second network node;

Wherein, the fifth mapping relationship represents the mapping relationship among the first IP packet header information, QoS information and second channel information; the QoS information includes QoS parameters, or QoS parameters and QoS identifiers.

It should be noted that the various modules, units, etc. in the above-mentioned device embodiments can all be stored in the memory as program modules, and the processor executes the above-mentioned program modules stored in the memory to realize corresponding functions. For the functions realized by each program module and its combination, as well as the technical effects achieved, reference may be made to the description of the corresponding parts of the above method embodiments, and details will not be repeated in this embodiment.

The present application also provides a computer-readable storage medium, on which a computer program can be stored, and the computer program can be called and loaded by a processor included in each node, so as to realize the data based on network quality of service described in the above-mentioned corresponding node-side embodiments. For the packet transmission method and the implementation process, reference may be made to the descriptions of the corresponding embodiments above, and details will not be described in this embodiment.

Referring to FIG. 15 , it is a schematic diagram of the hardware structure of an optional example of computer equipment suitable for the data packet transmission method based on network quality of service proposed in this application. The computer equipment can be configured as the above-mentioned first network node or second network node Or the third network node, it can be understood that the computer device is configured as a different network node in the communication system, and its product type can be different, which is not limited in the present application and can be determined according to the scene requirements. As shown in Figure 15, the computer device may include: a communication module 1 and a processing circuit 2, wherein:

When the computer device is configured as a different network node, the communication module 1 may be configured to implement data communication between the network node and other nodes in the communication system, and the implementation process will not be described in detail in this embodiment.

In some embodiments, the communication module 1 may include a communication module capable of using a wireless communication network to realize data interaction, such as a WIFI module, a 5G/6G (fifth generation mobile communication network/sixth generation mobile communication network) module, a GPRS module, etc. , to communicate with other nodes. The communication module 1 can also include a communication interface that realizes data interaction between the internal components of the computer equipment, such as a USB interface, a serial/parallel port, etc. The application does not limit the specific content contained in the communication module 1, and it can be based on the computer. The type of device is determined.

If the computer device is configured as a second network node, the communication module 1 may be configured to realize data communication between the second network node and the first network node and the third network node respectively. The processing circuit 2 may be configured to control the communication module 1: receive traffic mapping information sent by the third network node, and receive a data packet to be sent sent by the third network node; wherein, the traffic mapping information includes different A first mapping relationship between IP header information and different quality of service QoS information; the first IP header information includes the local IP address of the first network node and the second IP header information; the second IP header information includes information for The priority attribute value of the first channel configuration between the first network node and the third network node; the QoS information includes QoS parameters, or QoS parameters and QoS identifiers; the processing circuit 2 is further configured to according to the first channel configuration A mapping relationship and the first IP header information of the data packet to be sent, obtaining the second channel information and QoS parameters of the data packet to be sent; the second channel information is used to identify the first network node and the second network A second channel between nodes: according to the QoS parameter of the data packet to be sent, control the communication module to send the data packet to be sent through the second channel corresponding to the second channel information of the data packet to be sent to the corresponding first network node. As for the method steps implemented by the processing circuit 2 executing instructions in this embodiment, reference may be made to the network quality-of-service-based data packet transmission method described above on the side of the computer device configured as the second network node in the method embodiment.

If the computer device is configured as a first network node, the communication module 1 may be configured to implement data communication between the first network node and the second network node; the processing circuit 2 may be configured to obtain a data packet to be sent The protocol data unit PDU session identifier, QoS flow identifier and QoS parameters; obtain the third mapping relationship including the PDU session identifier; wherein, the third mapping relationship is accessed by the first network node and/or the second network node Or the third network node establishes and provides, and includes the mapping relationship between the PDU session identifier, QoS flow identifier, first channel information, second IP packet header information, and second channel information; the first channel information is used to identify The first channel between the first network node and the third network node; the second IP packet header information includes a priority attribute value configured for the first channel between the first network node and the third network node ; The second channel information is used to identify the second channel between the first network node and the second network node; According to the QoS flow identifier of the data packet to be sent and the third mapping relationship, obtain The second channel information of the data packet to be sent; according to the QoS parameter of the data packet to be sent, the communication module is controlled to pass the second channel corresponding to the second channel information of the data packet to be sent to send the data packet to be sent The sending data packet is sent to the second network node. Regarding the method steps implemented by the processing circuit 2 executing instructions in this embodiment, reference may be made to the method for transmitting data packets based on network quality of service described above on the side of the computer device configured as the first network node in the method embodiment.

If the computer device is configured as a third network node, the communication module 1 may be configured to realize data communication between the third network node and the second network node and the core network; the processing circuit 2 may be configured as Control the communication module to receive the PDU session resource request message sent by the core network; the PDU session resource request message includes a PDU session identifier, a QoS flow identifier, and a QoS parameter; the processing circuit 2 can also be configured to obtain the PDU session resource request message based on the QoS parameter A fourth mapping relationship; wherein, the fourth mapping relationship represents the mapping relationship between the PDU session identifier, the QoS flow identifier, the first channel information, and the second IP packet header information, or represents the PDU session identifier, the QoS flow identifier, The mapping relationship between the QoS identifier, the first channel information, and the second IP header information; the first channel information is used to identify the first channel between the corresponding first network node and the third network node; the second IP The packet header information includes a priority attribute value configured for the first channel between the first network node and the third network node; the communication module is controlled to send the fourth mapping relationship to the corresponding first network node. As for the method steps implemented by the processing circuit 2 executing instructions in this embodiment, reference may be made to the network quality-of-service-based data packet transmission method described above on the side of the computer device configured as the third network node in the method embodiment.

In some embodiments, as shown in FIG. 15 , the computer device further includes a storage device 3, which is configured to be accessible by the processing circuit and stores instructions, and the instructions are configured to be executed by the processor to realize the computer device on the corresponding side described above. The implemented data packet transmission method based on network quality of service, and the implementation process will not be described in detail in this application.

Wherein, the storage device 3 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device or other volatile solid-state storage devices. The processor 3 can be a central processing unit (Central Processing Unit, CPU), an application-specific integrated circuit (application-specific integrated circuit, ASIC), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a ready-made programmable gate array (FPGA) or other programmable logic devices, etc. In this application, there is no limitation on the device types of the memories and processors contained in different computer devices, which may be determined according to the circumstances.

It should be understood that the structure of the computer device shown in FIG. 15 does not constitute a limitation on the computer device in the embodiment of the present application. In practical applications, the computer device as different nodes may include more or more nodes than those shown in FIG. 15 A few parts, or some combination of parts, the present application does not list them all here.

Finally, it needs to be explained that each embodiment in this specification is described in a progressive or parallel manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other . As for the device, system and computer equipment disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for relevant details, please refer to the description of the method part.

The above 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 general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not 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

A data packet transmission method based on network quality of service, said method comprising:

Receive traffic mapping information sent by a third network node; wherein, the traffic mapping information includes a first mapping relationship between different first IP header information and different quality of service QoS information; the first IP header information includes the first network The local IP address of the node and the second IP header information; the second IP header information includes a priority attribute value configured for the first channel between the first network node and the third network node; the QoS information includes QoS parameters, or QoS parameters and QoS identifiers;

receiving a data packet to be sent sent by the third network node;

According to the first mapping relationship and the first IP header information of the data packet to be sent, obtain the second channel information and QoS parameters of the data packet to be sent; the second channel information is used to identify the first network node a second channel with a second network node;

Sending 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.
The method according to claim 1, said obtaining the second channel information and QoS parameters of the data packets to be sent according to the first mapping relationship and the first IP header information of the data packets to be sent, comprising:

Determine 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; the first identifier is used to identify access to the second network node each of the first network nodes;

Determine the second channel information of the second channel between the first network node and the second network node with the first identifier, and obtain the second channel information between the second channel information and the second IP packet header information or QoS identifier. Mapping relations;

According to the first mapping relationship and the first IP header information of the data packet to be sent, obtain the QoS parameter of the data packet to be sent, or the QoS parameter and QoS identifier;

Obtain the second channel information of the data packet to be sent according to the second mapping relationship and the second IP header information in the first IP header information of the data packet to be sent or the QoS identifier.
The method according to claim 2, said obtaining the second mapping relationship between the second IP packet header information or the QoS identifier and the second channel information, comprising:

Establishing a second mapping relationship between the second IP packet header information or the QoS identifier and the second channel information;

or,

Obtain a second mapping relationship between the second IP packet header information or the QoS identifier included in the traffic mapping information and the second channel information.
The method according to claim 2, said 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 comprises:

receiving 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; or,

determining the correspondence between local IP addresses of different first network nodes and first identifiers of different first network nodes according to historical data packets from different first network nodes;

Determine the first identifier of the first network node according to the corresponding relationship and the local IP address of the first network node in the first IP header information of the data packet to be sent.
A data packet transmission method based on network quality of service, said method comprising:

Obtain the protocol data unit PDU session identifier, QoS flow identifier and QoS parameters of the data packet to be sent;

Acquiring a third mapping relationship including the PDU session identifier; wherein, the third mapping relationship is established and provided by the second network node and/or the third network node accessed by the first network node, and includes the PDU session identifier , QoS flow identifier, first channel information, second IP packet header information, and the mapping relationship between the second channel information; the first channel information is used to identify the relationship between the first network node and the third network node the first channel; the second IP packet header information includes a priority attribute value configured for the first channel between the first network node and the third network node; the second channel information is used to identify the first network a second channel between a node and said second network node;

Obtain 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;

Send 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.
According to the method according to claim 5, the third mapping relationship includes a fourth mapping relationship and a second mapping relationship, and the fourth mapping relationship represents the PDU session identifier, QoS flow identifier, first channel information, and second The mapping relationship between the IP header information, or the mapping relationship between the PDU session identifier, the QoS flow identifier, the first channel information, the QoS identifier, and the second IP header information; the second mapping relationship indicates the second channel a mapping relationship between the information and the second IP header information or the QoS identifier;

The acquisition includes the third mapping relationship of the PDU session identifier, including:

receiving the fourth mapping relationship including the target PDU session identifier sent by the third network node;

Receive the second mapping relationship sent by the second network node.
According to the method according to claim 6, 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 comprises:

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

Based on the second mapping relationship, determine the obtained second IP packet header information or the second channel information to which the QoS identifier is mapped as the second channel information of the data packet to be sent.
The method according to claim 5, said obtaining the third mapping relationship including the PDU session identifier, comprising:

Receive a third mapping relationship including the PDU session identifier of the data packet to be sent sent by the third network node.
A data packet transmission method based on network quality of service, said method comprising:

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

Obtain a fourth mapping relationship according to the QoS parameter; wherein, the fourth mapping relationship represents the mapping relationship between the PDU session identifier, the QoS flow identifier, the first channel information, and the second IP packet header information, or represents the PDU A mapping relationship among session identifiers, QoS flow identifiers, QoS identifiers, first channel information, and second IP packet header information; the first channel information is used to identify the first network node between the corresponding first network node and the third network node channel; the second IP header information includes a priority attribute value configured for the first channel between the first network node and the third network node;

Send the fourth mapping relationship to the corresponding first network node.
A computer device configured as a second network node in a communication system implementing a data packet transmission method based on network quality of service, for communicating with a first network node and a third network node in the communication system For data communications, including:

a communication module configured to implement data communication between the second network node and the first network node and the third network node respectively;

A processing circuit, the processing circuit is configured to control the communication module: receive traffic mapping information sent by the third network node, and receive a data packet to be sent sent by the third network node; wherein, the traffic mapping information includes different The first mapping relationship between the first IP header information and different quality of service QoS information; the first IP header information includes the local IP address of the first network node and the second IP header information; the second IP header information includes A priority attribute value configured for the first channel between the first network node and the third network node; the QoS information includes QoS parameters, or QoS parameters and QoS identifiers;

The processing circuit is further 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 header information of the data packet to be sent; the second channel The information is used to identify the second channel between the first network node and the second network node; according to the QoS parameter of the data packet to be sent, control the communication module to pass through the second channel information corresponding to the data packet to be sent The second channel is to send the to-be-sent data packet to the corresponding first network node.
The computer device of claim 10, the processing circuit further configured to:

Determine 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; the first identifier is used to identify access to the second network node each of the first network nodes;

Determine the second channel information of the second channel between the first network node and the second network node with the first identifier, and obtain the second channel information between the second channel information and the second IP packet header information or QoS identifier. Mapping relations;

According to the first mapping relationship and the first IP header information of the data packet to be sent, obtain the QoS parameter of the data packet to be sent, or the QoS parameter and QoS identifier;

Obtain the second channel information of the data packet to be sent according to the second mapping relationship and the second IP header information in the first IP header information of the data packet to be sent or the QoS identifier.
The computer device according to claim 11, wherein the processing circuit is further configured to control the communication module to receive the first network node's first network node corresponding to the first network node's local IP address sent by the third network node a logo;

or,

The processing circuit is further configured to determine the correspondence between local IP addresses of different first network nodes and first identifiers of different first network nodes according to historical data packets from different first network nodes; according to the correspondence Determine the first identifier of the first network node based on the relationship with the local IP address of the first network node in the first IP header information of the data packet to be sent.
A computer device configured as a first network node in a communication system implementing a data packet transmission method based on network quality of service, for performing data communication with a second network node in the communication system, comprising :

a communication module configured to enable data communication between the first network node and the second network node;

A processing circuit, the processing circuit is configured to obtain a protocol data unit PDU session identifier, a QoS flow identifier, and a QoS parameter of a data packet to be sent; obtain a third mapping relationship including the PDU session identifier; wherein, the third mapping The relationship is established and provided by the second network node and/or the third network node accessed by the first network node, and includes the PDU session identifier, QoS flow identifier, first channel information, second IP packet header information, and second channel information The mapping relationship between; the first channel information is used to identify the first channel between the first network node and the third network node; the second IP packet header information includes information for the first network node and the third network node The priority attribute value of the first channel configuration between the three network nodes; the second channel information is used to identify the second channel between the first network node and the second network node; according to the to-be-sent According to the QoS flow identifier of the data packet and the third mapping relationship, the second channel information of the data packet to be sent is obtained; according to the QoS parameter of the data packet to be sent, the communication module is controlled to pass through the data packet to be sent The second channel corresponding to the second channel information, and sending the data packet to be sent to the second network node.
According to the computer device according to claim 13, the third mapping relationship is configured to include a fourth mapping relationship and a second mapping relationship, and the fourth mapping relationship is configured to represent the PDU session identifier, QoS flow identifier, The mapping relationship between the first channel information and the second IP header information, or the mapping relationship between the PDU session identifier, the QoS flow identifier, the first channel information, the QoS identifier, and the second IP header information; the first The second mapping relationship is configured to represent the mapping relationship between the second channel information and the second IP packet header information or the QoS identifier;

The processing circuit is further configured to control the communication module: receive the fourth mapping relationship including the target PDU session identifier sent by the third network node; receive the fourth mapping relationship sent by the second network node Two mapping relationship;

The processing circuit is further configured to obtain, based on the fourth mapping relationship, the first channel information and the QoS identifier corresponding to the QoS flow identifier of the data packet to be sent, and/or the second IP address corresponding to the first channel information. Packet header information: based on the second mapping relationship, determine the obtained second IP packet header information or the second channel information to which the QoS identifier is mapped as the second channel information of the data packet to be sent.
A computer device, the computer device is configured as a third network node in a communication system implementing a data packet transmission method based on network quality of service, and is used for communicating data with a second network node and a core network in the communication system Communications, including:

a communication module configured to implement data communication between the third network node and the second network node and the core network;

A processing circuit configured to control the communication module to receive a PDU session resource request message sent by the core network; the PDU session resource request message includes a PDU session identifier, a QoS flow identifier, and a QoS parameter;

The processing circuit is also configured to obtain a fourth mapping relationship according to the QoS parameter; wherein, the fourth mapping relationship represents the relationship between the PDU session identifier, the QoS flow identifier, the first channel information, and the second IP header information The mapping relationship, or indicates the mapping relationship between the PDU session identifier, QoS flow identifier, QoS identifier, first channel information, and second IP packet header information; the first channel information is used to identify the corresponding first network node and the second The first channel between three network nodes; the second IP packet header information includes a priority attribute value configured for the first channel between the first network node and the third network node; controlling the communication module to transfer the first channel to the third network node The fourth mapping relationship is sent to the corresponding first network node.