WO2022116665A1

WO2022116665A1 - Method and system for adjusting tcp flow

Info

Publication number: WO2022116665A1
Application number: PCT/CN2021/121789
Authority: WO
Inventors: 江舟; 连超; 赵军锋; 张平荣
Original assignee: 中兴通讯股份有限公司
Priority date: 2020-12-04
Filing date: 2021-09-29
Publication date: 2022-06-09
Also published as: CN114666423A

Abstract

Disclosed in the embodiments of the present application are a method and a system for adjusting TCP flow, relating to the field of communication. The present method is used in a network data analytics function NWDAF, and comprises respectively sending a log subscription command to a session management function SMF and a user plane function UPF; receiving SMF data returned by the SMF on the basis of the log subscription command and UPF data returned by the UPF on the basis of the log subscription command; analysing the SMF data and the UPF data to estimate a TCP flow adjustment policy; and pushing the TCP flow adjustment policy to a TCP acceleration apparatus pre-accessing between the UPF and an external gateway for the TCP acceleration apparatus, on the basis of the TCP flow adjustment policy, to adjust the TCP flow produced when each application program APP accesses the network.

Description

Adjustment method and system for TCP flow

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based on the Chinese patent application with the application number "202011408143.8" and the filing date is December 04, 2020, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated by reference. Application.

technical field

The embodiments of the present application relate to the field of communications, and in particular, to a method and system for adjusting a TCP flow.

Background technique

5G communication network has the characteristics of high speed (enhanced mobile broadband, eMBB), large capacity (large-scale machine communication, mMTC), and low latency (high reliability and low latency communication, uRLLC), so with the development of 5G communication network , greatly improving the user's network access experience.

However, as people's habit of surfing the Internet changes from PC to mobile, coupled with increasingly popular videos and live broadcasts, users' demand for mobile network bandwidth is also growing rapidly. In order to improve the competitiveness of operators, in this case, it is particularly important to improve the user's network access experience of the mobile terminal as much as possible by using limited network resources.

SUMMARY OF THE INVENTION

The embodiment of the present application provides a method for adjusting a TCP flow, which is applied to NWDAF (Network Data Analytics Function, network data analysis function), and the method includes:

SMF (Session management function, respectively to session management function) and UPF (User Plane Function, user plane function) send log subscription instructions;

receiving SMF data fed back by the SMF according to the log subscription instruction, and UDF data fed back by the UPF according to the log subscription instruction;

The SMF data and the UDF data are analyzed to estimate the TCP flow adjustment strategy;

Pushing the TCP flow adjustment policy to the TCP acceleration device pre-connected between the UPF and the external gateway, for the TCP acceleration device to access the network for each APP (Application) according to the TCP flow adjustment policy The resulting TCP stream is adjusted.

The embodiment of the present application also provides a method for adjusting a TCP flow, which is applied to a TCP acceleration device, and the TCP acceleration device is respectively connected to the network data analysis function NWDAF, the user plane function UPF and the external gateway in communication and connection, and the method includes:

sending a TCP flow adjustment policy subscription instruction to the NWDAF;

receiving the TCP flow adjustment policy fed back by the NWDAF according to the TCP flow adjustment policy subscription instruction, where the TCP flow adjustment policy is determined by the NWDAF based on the SMF data fed back by the session management function SMF and the UPF data fed back by the UPF;

According to the TCP flow adjustment policy, the TCP flow generated when each application program APP accesses the network is adjusted.

The embodiment of the present application also provides a device for adjusting a TCP flow, including:

The log subscription module is used to send log subscription instructions to the session management function SMF and the user plane function UPF respectively;

a data receiving module, configured to receive the SMF data fed back by the SMF according to the log subscription instruction, and the UDF data fed back by the UPF according to the log subscription instruction;

A data analysis module for analyzing the SMF data and the UDF data, and estimating the TCP flow adjustment strategy;

A policy push module, configured to push the TCP flow adjustment policy to the TCP acceleration device pre-accessed between the UPF and the external gateway, so that the TCP acceleration device can access each application APP according to the TCP flow adjustment policy The TCP stream generated when the network is adjusted.

a policy subscription module, for sending a TCP stream adjustment policy subscription instruction to the NWDAF;

A policy receiving module, configured to receive the TCP flow adjustment policy fed back by the NWDAF according to the TCP flow adjustment policy subscription instruction, where the TCP flow adjustment policy is fed back by the NWDAF based on the SMF data fed back by the session management function SMF and the UPF feedback The UPF data is determined;

The TCP flow adjustment module is configured to adjust the TCP flow generated when each application program APP accesses the network according to the TCP flow adjustment policy.

The embodiment of the present application also provides a network data analysis function, including:

at least one processor; and,

a memory communicatively coupled to the at least one processor; wherein,

The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the adjustment of the TCP stream applied to the NWDAF as described above method.

The embodiment of the present application also provides a TCP acceleration device, including:

at least one processor; and,

a memory communicatively coupled to the at least one processor; wherein,

The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to execute the TCP stream applied to the TCP acceleration device as described above adjustment method.

Embodiments of the present application further provide a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, implements the above-mentioned adjustment method for a TCP stream applied to NWDAF, or is applied to TCP as described above A method for adjusting the TCP flow of the acceleration device.

The embodiment of the present application also provides a TCP flow adjustment system, including:

A TCP accelerator as described above; and,

the network data analysis function NWDAF, the user plane function UPF and the external gateway as described above in communication with the TCP acceleration device; and,

a session management function SMF communicatively connected to the NWDAF; wherein,

the NWDAF is also communicatively connected to the UPF;

The NWDAF is used to perform the adjustment method applied to the TCP flow of the NWDAF as described above;

The TCP acceleration device is configured to perform the adjustment method of the TCP flow applied to the TCP acceleration device as described above.

Description of drawings

One or more embodiments are exemplified by the pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments.

1 is a schematic structural diagram of a TCP flow adjustment system provided by a first embodiment of the present application;

2 is a schematic diagram of the architecture of the TCP flow adjustment system provided in the first embodiment of the present application in a 5G network;

3 is a flowchart of a method for adjusting a TCP flow provided by a second embodiment of the present application;

4 is a schematic diagram of interaction of various functional entities involved in a method for adjusting a TCP flow provided by the second embodiment of the present application;

5 is a flowchart of a method for adjusting a TCP flow provided by a third embodiment of the present application;

6 is a schematic structural diagram of an apparatus for adjusting a TCP stream provided by a fourth embodiment of the present application;

7 is a schematic structural diagram of an apparatus for adjusting a TCP flow provided by a fifth embodiment of the present application;

8 is a schematic structural diagram of a network data analysis function provided by the sixth embodiment of the present application;

FIG. 9 is a schematic structural diagram of a TCP acceleration apparatus provided by a seventh embodiment of the present application.

Detailed ways

The embodiments of the present application provide a method and system for adjusting a TCP (Transmission Control Protocol, Transmission Control Protocol) flow. NWDAF (Network Data Analytics Function) is a data-aware analysis network element that automatically senses and analyzes the network based on network data. Analyze, and participate in the whole life cycle of network planning, construction, operation and maintenance, network optimization, and operation, making the network easy to maintain and control, improving the efficiency of network resource utilization, and improving user service experience. Based on this, the TCP flow adjustment method and system proposed in the present application, by using the intelligent analysis statistics of NWDAF and trend prediction, the SMF data provided by SMF (Session management function) and the UPF data provided by UPF (User Plane Function) are analyzed. Analysis, and then predict the adjustment strategy for the TCP flow generated when each APP accesses the network, such as accelerating the TCP flow of a certain type of APP, and limiting the speed of a certain type, and finally push the estimated TCP flow adjustment strategy to Pre-connect to the TCP acceleration device between the UPF and the external gateway, so that the TCP acceleration device can make reasonable adjustments to the TCP flow from the UPF, thereby improving the user network of the mobile terminal as much as possible under limited network resources. visit experience.

In order to make the objectives, technical solutions and advantages of the embodiments of the present application more clear, each embodiment of the present application will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that, in each embodiment of the present application, many technical details are provided for the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can be realized. The following divisions of the various embodiments are for the convenience of description, and should not constitute any limitation on the specific implementation of the present application, and the various embodiments may be combined with each other and referred to each other on the premise of not contradicting each other.

The first embodiment of the present application relates to a TCP flow adjustment system, as shown in FIG. 1 . A TCP flow adjustment system includes: a TCP acceleration device 10 , a network data analysis function 20 , a session management function 30 , a user plane function 40 and an external gateway 50 .

The TCP acceleration device 10 is respectively connected to the network data analysis function 20 , the user plane function 40 and the external gateway 50 , and the network data analysis function 20 is in turn connected to the session management function 30 and the user plane function 40 .

It can be understood that the network data analysis function 20 mentioned in this embodiment is the NWDAF (Network Data Analytics Function) mentioned in the communication field. It is a functional entity proposed by the fifth-generation mobile communication technology (5th-Generation, 5G) system. It can be regarded as a data-aware analysis network element. It mainly uses network data as the basis to automatically perceive and analyze the network, and participate in In the whole life cycle of network planning, construction, operation and maintenance, network optimization, and operation, the network is easy to maintain and control, improve the efficiency of network resource use, and improve user service experience.

Similarly, the session management function 30 is also a functional entity of the 5G service-based architecture, which is called SMF (Session management function) in the communication field. Specifically, in practical applications, the SMF is mainly responsible for interacting with the classified data plane, creating, updating and deleting protocol data unit (Protocol Data Unit, PDU) sessions, and managing the session context (session context) with the user plane function 40, That is, in practical applications, there is also a communication connection between the session management function 30 and the user plane function 40 .

Similarly, the user plane function 40 is also an important functional entity in the 5G-based service architecture, which is the so-called UPF (User Plane Function) in the communication field.

The TCP acceleration device 10 is a functional entity newly added to the 5G service-based architecture in this embodiment, and is mainly used to accelerate or adjust the speed limit of the TCP flow according to the TCP flow adjustment policy provided by the network data sub-function 20 .

In order to better understand the adjustment of the TCP flow by the adjustment policy of the TCP flow provided in this embodiment, the following description is made with reference to the architecture diagram in the 5G network given in FIG. 2 .

For the convenience of description, the following briefly describes the network element functional entities in the architecture shown in Figure 2:

As shown in Figure 2, NSSF (Network Slice Selection Function, network slice selection function), AUSF (Authentication Server Function, authentication service function), NEF (Network Exposure Function, network service presentation function), UDM (Unified Data Management, unified Data management function), NRF (NF Repository Function, network element data warehouse function), PCE (Policy Control function, policy control function), AF (Application Function, application layer function) These network element functional entities communicate with AMF (Access and Mobility Management Function, access and mobility management function), SMF (Session management function, session management function) and NWDAF (Network Data Analytics Function, network data analysis function) These network element functional entities are connected, and AMF is connected through the N1 interface ( The signaling plane interface between UE and AMF, which is a logical interface) is connected to UE (User Equipment, user terminal equipment) through the N2 interface (the signaling plane interface between (R)AN and AMF, similar to s1- mme interface) is connected to the (R)AN (Radio Access Network, access network), the UE accesses the (R)AN through wired or wireless means, and the (R)AN uses the N3 interface (the interface between the (R)AN and the UPF) , mainly used to transmit uplink and downlink user plane data between 5G(R)AN and UPF) and UPF, UPF communicates with SMF through N4 interface (the interface between SMF and UPF, used to transmit control plane information between SMF and UPF) Connected, TCPO (TCP acceleration device) communicates with UPF and DN (Data Network, data network, such as operator services, Internet access or third-party services, etc.) connectivity.

It should be noted that the DN mentioned above is the external gateway mentioned in this embodiment. In practical applications, the external gateway can be not only a DN, but also a FW (firewall, firewall), or a core network other network devices that carry the role of a gateway.

In addition, it should be understood that the above is only a specific architecture of the 5G network at present, and does not constitute a limitation on the technical solutions of the present application. In practical applications, the specific network element functional entities in the architecture can be based on business needs. There are changes, as long as the architecture includes the TCP acceleration device 10, the network data analysis function 20, the session management function 30, the user plane function 40 and the external gateway 50 mentioned in this embodiment, and ensure that these five network element functional entities are Between them, the communication connection can be performed according to the connection relationship mentioned in this embodiment.

Based on the structure shown in Figure 2, when implementing the adjustment of the TCP flow, it is specifically:

First, a TCP flow adjustment policy subscription instruction is sent by the TCPO (ie, the TCP acceleration device 10 in FIG. 1 ) to the NWDAF (ie, the network data analysis function 20 in FIG. 1 ).

Next, after receiving the TCP flow adjustment policy subscription instruction sent by the TCPO, the NWDAF generates a log subscription instruction, and sends the generated log subscription instruction to the SMF (that is, the session management function 30 in FIG. 1 ) and the UPF (that is, the session management function 30 in FIG. 1 ). The user plane function 40 in FIG. 1 ), so that the SMF can push the generated data (hereinafter referred to as SMF data for convenience of description) to the NWDAF when monitoring the creation, or update, or release of the PDU session; The UF can push the generated data (hereinafter referred to as UPF data for convenience of description) to the NWDAF when the flow release operation is monitored.

Then, based on its ability to analyze and predict network data, NWDAF analyzes SMF data and UDF data, and then predicts a TCP flow adjustment policy suitable for the current network, and pushes the obtained TCP flow adjustment policy to TCPO.

Finally, according to the received TCP flow adjustment policy, TCPO adjusts the TCP flow generated when each APP (Application, application) released by UPF accesses the network, such as accelerating the TCP flow corresponding to the high-value APP, and then sending it to The external gateway DN, which limits the rate of the TCP flow corresponding to the low-value APP, and then sends it to the external gateway DN.

Therefore, the TCP flow adjustment system provided by this embodiment analyzes the SMF data provided by the SMF and the UPF data provided by the UPF by using the intelligent analysis statistics of the NWDAF and the trend prediction, and then predicts the access network of each APP. The adjustment strategy of the TCP flow generated at the time, such as accelerating the TCP flow of a certain type of APP, and limiting the speed of a certain type, and finally push the estimated TCP flow adjustment strategy to the TCP between the pre-connected UPF and the external gateway. The acceleration device enables the TCP acceleration device to reasonably adjust the TCP flow from the UPF, thereby improving the user network access experience of the mobile terminal as much as possible under limited network resources.

The second embodiment of the present application relates to a method for adjusting a TCP flow, which is applied to the network data analysis function NWDAF.

Regarding NWDAF, other network element functional entities involved in implementing the TCP flow adjustment method, and the connection relationship with these network element functional entities, please refer to the corresponding TCP flow adjustment system provided by the first embodiment of this application for details. of Figures 1 and 2.

The implementation details of the TCP flow adjustment method in this embodiment will be described below. The following content is only provided for the convenience of understanding, and is not necessary for implementing this solution.

The specific process of this embodiment is shown in Figure 3, which specifically includes the following steps:

Step 301: Send log subscription instructions to the session management function SMF and the user plane function UPF respectively.

Step 302: Receive the SMF data fed back by the SMF according to the log subscription instruction, and the UDF data fed back by the UPF according to the log subscription instruction.

Step 303: Analyze the SMF data and the UDF data to estimate a TCP flow adjustment policy.

Step 304: Push the TCP flow adjustment policy to the TCP acceleration device pre-connected between the UPF and the external gateway, for the TCP acceleration device to generate when each application APP accesses the network according to the TCP flow adjustment policy. The TCP stream is adjusted.

In order to better understand the operations in steps 301 to 304, a specific description is given below with reference to FIG. 4 :

(1) TCPO (TCP acceleration device) sends a TCP flow adjustment policy subscription instruction to NWDAF.

That is, in practical applications, the premise of triggering the NWDAF to perform the operations from steps 301 to 304 is that the NWDAF has received the TCP flow adjustment policy subscription instruction sent by the TCPO (TCP acceleration device).

(2) After NWDAF receives the TCP stream adjustment policy subscription instruction sent by TCPO, it will generate log subscription instructions, and send the generated log subscription instructions to SMF and UPF respectively.

Regarding the log subscription command mentioned above, in practical applications, it specifically refers to the command to subscribe to the call history record log (call history record log, CHR log), that is, the subsequently received SMF data fed back by the SMF according to the log subscription command and UPF extracted from the CHR log when the UPF data fed back by the log subscription instruction.

From the introduction of the SMF in the first embodiment, it can be known that the SMF is mainly responsible for interacting with the classified data plane, creating, updating and deleting PDU sessions. Therefore, when there is a PDU session generated by interactive operations such as creation, update, or deletion, the SMF will perform the operation of collecting information on the creation of the control plane, and push the collected data (hereinafter referred to as SMF data) to the NWDAF.

Correspondingly, since the UPF is mainly responsible for sending the UE, in this embodiment, it mainly refers to the flow generated when the APP in the mobile user equipment accesses the network, and in this embodiment, it mainly refers to sending the TCP flow to the external gateway, that is, the flow is released. Therefore, when a flow is released, the UPF will collect flow information, and push the collected data (hereinafter referred to as UPF data) to the NWDAF.

(3) After receiving the SMF data and the UPF data, the NWDAF will analyze the SMF data and the UDF data based on its own analysis and prediction capabilities, and then estimate the TCP flow adjustment policy.

In this embodiment, the NWDAF analyzes the SMF data and the UDF data, and then estimates the operation of obtaining the TCP flow adjustment policy. In practical applications, it is specifically:

First, the SMF data and the UDF data are combined according to preset field information to obtain data to be processed.

In this embodiment, the SEID (Near Field Communication NFC serial number) and the N4 interface are used as preset field information, and the SMF data and the UDF data are combined, that is, the data provided by the N4 interface with the same SEID is combined.

Based on this method, the merged data to be processed mainly includes: International Mobile Subscriber Identity (IMSI), private network address, private network port, protocol type, destination address, destination port, number of packets, duration , known APP types, uniform resource locator (URL), etc.

Then, based on a preset trend prediction machine learning algorithm, with preset time granularity and preset area as dimensions, analyze data in different time dimensions and different usage areas in the to-be-processed data to obtain the TCP flow adjustment Strategy.

In this embodiment, the TCP flow adjustment policy is estimated to be able to quickly identify APPs that occupy a large amount of traffic but have low value, as well as high-value APPs such as popular APPs.

Therefore, when estimating the TCP flow adjustment strategy based on the above method, the preset time granularity and the preset area are used as the dimensions, and the statistics of the different time dimensions and different usage areas in the data to be processed are calculated. Source IP address, destination IP address corresponding to each APP in each client, and historical traffic usage information of each APP; then, by traversing each APP, establish the source IP address and the traversed APP. The mapping relationship between the destination IP address corresponding to the APP and the historical traffic usage information, the historical traffic usage statistics table of each APP is obtained; finally, based on the preset trend prediction machine learning algorithm, the historical traffic usage statistics table is obtained. Each recorded piece of data with a mapping relationship is analyzed to obtain the TCP flow adjustment policy.

Regarding the above-mentioned preset time granularity, the unit may be minutes, hours, or days, that is, every minute, or an hour, or once a day; the preset area may be a cell as a unit.

In addition, it should be noted that, in practical applications, the TCP acceleration device used to adjust the TCP flow can only identify the destination IP, and accelerate or limit the speed of the corresponding TCP flow through the destination IP. Therefore, the above-mentioned TCP flow adjustment policy specifically records the destination IP address that needs to be accelerated and the destination IP address that needs to be speed-limited.

Regarding the above-mentioned destination IP addresses that need to be speed-limited, NWDAF uses a preset trend prediction machine learning algorithm based on the analysis of each piece of data with a mapping relationship recorded in the historical traffic usage statistics table, and then identifies The destination IP address corresponding to the low-value APP that consumes a lot of traffic.

It should be noted that the low-value APPs that occupy a large amount of traffic in this embodiment are specifically obtained by NWDAF based on the data recorded in the historical traffic usage statistics table to be analyzed and obtained, and the top N of the network congestion phenomenon occur. The historical traffic usage of each cell, as well as the frequently occurring IMSIs of UEs and APPs that occupy a large amount of traffic but have a low proportion of usage when congestion occurs.

For example, it is found through statistics that there is congestion during the current statistical time, and there are 1,000 users accessing the network in one of the top N cells, but only 10 users, that is, 10 users with different IMSIs, have access to the network. The UE is using a P2P-type APP to access the network, but it occupies a large amount of traffic allocated to the cell. At this time, in order not to affect the surfing experience of other user groups (other 990s), it is considered that the P2P-type APPs used by the 0 UEs with different IMSIs are low-value APPs that occupy a large amount of traffic, that is, speed limiting is required.

Correspondingly, the above-mentioned destination IP address that needs to be accelerated is specifically based on the preset trend prediction machine learning algorithm by NWDAF, by analyzing each piece of data with a mapping relationship recorded in the historical traffic usage statistics table, and then The destination IP address corresponding to the identified high-value APP.

Regarding the above-mentioned high-value APPs, in practical applications, it can be determined according to the popularity of users. For example, APPs with high user traffic can be considered as popular APPs. For this type of APP, it can be considered as a high-value APP.

It should be understood that the above examples are only examples listed for better understanding of the technical solutions of the present embodiment, and are not used as the only limitation on the present embodiment.

In this embodiment, considering the influence of factors such as seasons and holidays on the prediction results, that is, high-frequency access to a certain type of APP may only occur in certain seasons or holidays, such as cold winter, and most user groups prefer to stay at home to chase At this stage, video-type APPs may become popular APPs. For example, for online promotions conducted by e-commerce companies at a certain time, it may be at a fixed time during this period. If there is a promotion, such APPs may become popular APPs. Therefore, in order to make the estimated TCP flow adjustment strategy more in line with the actual situation, when NWDAF estimates the TCP flow adjustment strategy, it can first obtain the history mentioned in each piece of data with a mapping relationship recorded in the historical traffic usage statistics table. The generation time of the traffic usage information, and then for each piece of data with a mapping relationship recorded in the historical traffic usage statistics table, based on the trend prediction machine learning algorithm, combined with the generation time to analyze to obtain the TCP flow adjustment Strategy.

Therefore, by introducing the generation time of the historical traffic usage information of each APP when estimating the TCP flow adjustment strategy, the current season, and whether it is a holiday or some specific activity day can be determined according to the generation time, and then based on the generation time When the trend prediction machine learning algorithm analyzes the data in the historical traffic usage statistics table, it can take into account the impact of factors such as seasons and holidays on the trend, making the estimated TCP flow adjustment strategy more reasonable.

In addition, it is worth mentioning that, with regard to the above-mentioned trend prediction machine learning algorithm, in practical applications, it can be an Autoregressive Integrated Moving Average Model (ARIMA), a prophet (time series prediction library) model , Long Short-Term Memory Model (Long Short-Term Memory, LSTM), etc., which are not listed one by one here, and are not limited in this embodiment.

For ease of understanding, the following takes the LSTM model as an example to illustrate the operation of estimating the TCP flow adjustment strategy:

Specifically, in practical applications, in order to quickly and accurately predict the TCP flow adjustment strategy suitable for the actual situation, a network model with an LSTM and a fully connected layer can be pre-built, and then the constructed network model can be Perform iterative training to obtain a TCP flow adjustment strategy estimation model, so that each time new SMF data and UDP data are obtained, the two can be directly merged and input into the TCP flow adjustment strategy estimation model, and then the The output result of the TCP flow adjustment policy estimation model is used as the estimated TCP flow adjustment policy.

Regarding the training of the TCP flow adjustment policy prediction model, the details are as follows:

First, the pre-acquired sample data, that is, the data obtained by merging the SMF data and UDP data generated at the historical moment, are divided into training set and test set according to the ratio of 7:3.

Then, the flow values in the training set of the fixed time period are normalized, so as to improve the descending speed of the gradient term.

Next, the normalized flow values are sequentially input to the constructed network model for iterative training. For example, the input flow values are the flow values at t-4, t-3, t-2, and t-1, respectively. Based on the flow values at these times, predict the flow value at time t, and then add the predicted flow value at time t to the training set to predict the flow value at time t+1. The overall process is as follows:

Input: t-4, t-3, t-2, t-1; prediction: t

Input: t-3, t-2, t-1, t; prediction: t+1

Input: t-2, t-1, t-0, t+1; prediction: t+2

The whole process iterates continuously until the granularity that needs to be predicted is reached.

Then, the predicted value output after the above time series is input into the network model is compared with the actual value, the mean square error MSE loss function is used, and the ADAM optimization algorithm is used to optimize the loss function. By optimizing the loss function, the gradient descent is continuously performed. After training, with the convergence of the loss function, a suitable network model can be obtained.

Finally, in the test set that has also been normalized, the corresponding traffic values at different times are input into the network model after iterative training, and then the output predicted value is compared with the actual real value. When the performance index of the test result reaches When expected, if the test value is basically the same as the real value, or the error is within a certain range, the current network model can be determined as the TCP flow adjustment strategy prediction model, that is, the model can be used to predict a certain time in the future. The traffic trend of the cell is entered, and a subsequent TCP flow adjustment policy suitable for the cell is formulated.

For example, once it is predicted that the traffic trend behind the cell shows an obvious upward trend, if the growth rate of the upward trend exceeds the preset value, for example, the traffic increases by 30% within 30 minutes, the IMSI that causes the cell congestion will be counted from the historical data. The corresponding private network IP and the destination IP accessed by the low-value APP are determined as the destination IP that needs to be speed-limited, and the TCP flow adjustment policy is pushed to the TCP acceleration device, and the TCP acceleration device performs the speed-limiting destination IP as required. , to limit the speed of the TCP flow generated when the APP corresponding to this purpose IP accesses the network, otherwise, the TCP acceleration device will accelerate the target IP according to the needs, and the TCP flow generated when the APP corresponding to this purpose IP accesses the network will be processed. accelerate.

That is to say, in Figure 4, after receiving the TCP flow adjustment policy pushed by NWDAF, the TCPO will identify the UE Internet access flow sent by UPF according to the destination IP address recorded in the TCP flow adjustment policy that needs to be accelerated. Then, accelerate the destination IP address that needs to be accelerated, that is, the TCP flow corresponding to the high-value APP, and then send the accelerated TCP flow to the external gateway; adjust the needs recorded in the policy according to the TCP flow The destination IP address for speed limiting, identify the destination IP address in the UE Internet access flow sent by UPF, and then limit the destination IP address that needs speed limiting, that is, the TCP flow corresponding to the low-value APP, and then limit the speed. The subsequent TCP stream is sent to the external gateway.

It is not difficult to find from the above description that the adjustment method of TCP flow provided by this embodiment uses the intelligent analysis statistics of NWDAF and trend prediction to analyze the SMF data provided by SMF and the UPF data provided by UPF, and then predict the correct The adjustment policy of the TCP flow generated when each APP accesses the network. For example, the TCP flow of a certain type of APP is accelerated, and the rate of a certain type is limited. Finally, the estimated TCP flow adjustment policy is pushed to the pre-connected UPF and external gateway. Therefore, the TCP acceleration device can reasonably adjust the TCP flow from the UPF, thereby improving the user network access experience of the mobile terminal as much as possible under limited network resources.

That is to say, based on the method for adjusting the TCP flow provided in this embodiment, it can be realized that when the mobile network is busy, by adjusting the data flow packet strategy, for example, the TCP flow of the low-value APP is limited, and the high-value APP can be adjusted. The adjustment strategy of accelerating the TCP flow of each APP, making reasonable adjustments to the TCP flow generated when each APP accesses the network, rather than making a unified adjustment to all TCP flows, such as speed limit or acceleration, so that limited mobile network resources It can be used reasonably, thereby improving user experience, increasing the user stickiness of operators, and enhancing the competitiveness of operators.

The third embodiment of the present application relates to a method for adjusting a TCP flow, which is applied to a TCP acceleration device.

Regarding the TCP acceleration device, other network element functional entities involved in implementing the TCP flow adjustment method, and the connection relationship with these network element functional entities, please refer to the TCP flow adjustment system provided by the first embodiment of this application for details. Corresponding Figures 1 and 2.

As shown in FIG. 5 , the adjustment method of the TCP flow involved in the second embodiment includes the following steps:

Step 501: Send a TCP flow adjustment policy subscription instruction to the NWDAF.

Step 502: Receive the TCP flow adjustment policy fed back by the NWDAF according to the TCP flow adjustment policy subscription instruction, and the TCP flow adjustment policy is based on the SMF data fed back by the NWDAF based on the session management function SMF and the UPF data fed back by the UPF. Sure.

Step 503: Adjust the TCP flow generated when each application program APP accesses the network according to the TCP flow adjustment policy.

In this embodiment, the destination IP address that needs to be accelerated and the destination IP address that needs to be speed-limited are recorded in the TCP flow adjustment policy estimated by NWDAF.

Therefore, when adjusting the TCP flow generated when each APP accesses the network according to the TCP flow adjustment policy, the specific method is to read the destination IP address that needs to be accelerated and the destination IP address that needs to be speed-limited from the TCP flow adjustment policy. , and then, based on the destination IP address that needs to be accelerated, the TCP flow generated when the APP corresponding to the destination IP address that needs to be accelerated accesses the network is accelerated.

Correspondingly, based on the destination IP address that needs to be speed-limited, the TCP flow generated when the APP corresponding to the destination IP address that needs to be speed-limited accesses the network is speed-limited.

In this embodiment, since in practical application, NWDAF may perform analysis based on SMF data and UPF data, the estimated TCP flow adjustment policy only includes adjustment information for TCP flow, such as acceleration or speed limit.

Therefore, in order to make the TCP acceleration device better adapt to the actual use scenario, before the TCP acceleration device reads the destination IP address that needs to be accelerated and the destination IP address that needs to be speed-limited from the TCP flow adjustment policy, it can be judged first. Whether the destination IP address that needs to be accelerated and the destination IP address that needs to be speed-limited is carried in the TCP flow adjustment policy, and then a subsequent adjustment operation is triggered according to the judgment result.

In this embodiment, if it is determined through judgment that the TCP flow call-out policy carries the destination IP address that needs to be accelerated and the destination IP address that needs to be speed-limited, then execute the acceleration according to the needs. The destination IP address is to accelerate the TCP flow generated when the APP corresponding to the destination IP address that needs to be accelerated accesses the network, and the destination IP address that is speed-limited according to the needs, the speed-limited destination IP address that needs to be speed-limited. The steps of speed limiting the TCP flow generated when the APP corresponding to the destination IP address accesses the network;

If it is determined through judgment that only the destination IP address that needs to be accelerated is carried in the TCP flow call-out policy, only the destination IP address that needs to be accelerated is executed, and the destination IP address that needs to be accelerated is executed. The steps of accelerating the TCP flow generated when the corresponding APP accesses the network;

If it is determined through judgment that only the destination IP address that needs to be speed-limited is carried in the TCP flow outgoing policy, only the destination IP address that needs to be speed-limited according to the need is executed, and the speed-limited destination IP address needs to be limited. The steps of rate limiting the TCP flow generated when the APP corresponding to the destination IP address accesses the network.

It is not difficult to find that steps 501 to 503 in this embodiment are related to steps 301 to 304 in the second embodiment, that is, when adjusting the TCP flow, the implementation of the overall solution needs to involve step 301 Go to step 304, and all operations from step 501 to step 503. The specific implementation of steps 501 to 503 involved in this embodiment has been described in the second embodiment in conjunction with the introduction of FIG. 4 , and details are not repeated here.

Therefore, the method for adjusting the TCP flow provided by this embodiment analyzes the SMF data provided by the SMF and the UPF data provided by the UPF by using the intelligent analysis statistics of the NWDAF and the trend prediction, and then predicts the access network of each APP. The adjustment strategy of the TCP flow generated at the time, such as accelerating the TCP flow of a certain type of APP, and limiting the speed of a certain type, and finally push the estimated TCP flow adjustment strategy to the TCP between the pre-connected UPF and the external gateway. The acceleration device enables the TCP acceleration device to reasonably adjust the TCP flow from the UPF, thereby improving the user network access experience of the mobile terminal as much as possible under limited network resources.

In addition, it should be understood that the division of steps of the various methods above is only for the purpose of describing clearly, and may be combined into one step or split into some steps during implementation, and decomposed into multiple steps, as long as the same logical relationship is included, all Within the protection scope of this patent; adding insignificant modifications to the algorithm or process or introducing insignificant designs, but not changing the core design of the algorithm and process are all within the protection scope of this patent.

The fourth embodiment of the present application relates to an apparatus for adjusting a TCP flow. As shown in FIG. 6 , an apparatus for adjusting a TCP flow 600 includes a log subscription module 601 , a data receiving module 602 , a data analysis module 603 and a policy pushing module 604 .

The log subscription module 601 is configured to send log subscription instructions to the session management function SMF and the user plane function UPF respectively; the data receiving module 602 is configured to receive the SMF data fed back by the SMF according to the log subscription instruction, and the UPF according to the UDF data fed back by the log subscription instruction; the data analysis module 603 is used to analyze the SMF data and the UDF data, and estimate the TCP flow adjustment policy; the policy push module 604 is used to The flow adjustment policy is pushed to the TCP acceleration device pre-connected between the UPF and the external gateway, for the TCP acceleration device to adjust the TCP flow generated when each application APP accesses the network according to the TCP flow adjustment policy.

In addition, in another example, the data analysis module 603 is specifically configured to combine the SMF data and the UDF data according to preset field information to obtain data to be processed; based on a preset trend prediction machine learning algorithm, to The preset time granularity and the preset area are dimensions, and the data in different time dimensions and different usage areas in the data to be processed are analyzed to obtain the TCP flow adjustment policy.

In addition, in another example, the preset trend prediction machine learning algorithm takes preset time granularity and preset area as dimensions, and performs data analysis on data in different time dimensions and different usage areas in the data to be processed. Analysis, to obtain the TCP flow adjustment strategy, specifically:

Taking the preset time granularity and the preset area as the dimensions, count the source IP addresses of the client terminals and the corresponding purposes of the APPs in the client terminals in different time dimensions and different usage areas in the data to be processed. IP address, and historical traffic usage information of each of the APPs;

Traversing the APPs, establishing a mapping relationship between the source IP address and the destination IP address corresponding to the traversed APP, and historical traffic usage information, and obtaining a historical traffic usage statistics table of the each APP;

Based on a preset trend prediction machine learning algorithm, analyze each piece of data with a mapping relationship recorded in the historical traffic usage statistics table to obtain the TCP flow adjustment policy.

In addition, in another example, the preset trend prediction machine learning algorithm analyzes each piece of data with a mapping relationship recorded in the historical traffic usage statistics table to obtain the TCP flow adjustment policy, specifically for:

Obtain the generation time of the historical traffic usage information in each piece of data with a mapping relationship recorded in the historical traffic usage statistics table;

For each piece of data with a mapping relationship recorded in the historical traffic usage statistics table, based on the trend prediction machine learning algorithm and the generation time, the TCP flow adjustment policy is obtained by analyzing the data.

Based on a preset trend prediction machine learning algorithm, analyze each piece of data with a mapping relationship recorded in the historical traffic usage statistics table, and identify low-value APPs and high-value APPs that occupy a large amount of traffic;

Obtain the destination IP address corresponding to the low-value APP and the destination IP address corresponding to the high-value APP;

Taking the destination IP address corresponding to the low-value APP as the destination IP address that needs to be speed-limited, and using the destination IP address corresponding to the high-value APP as the destination IP address that needs to be accelerated, the TCP flow adjustment policy is obtained.

In addition, in another example, the TCP flow adjustment policy is pushed to the TCP acceleration device that is pre-accessed between the UPF and the external gateway, so that the TCP acceleration device can adjust each flow according to the TCP flow adjustment policy. Adjust the TCP flow generated when the application APP accesses the network, specifically:

Push the TCP flow adjustment policy to the TCP acceleration device that is pre-accessed between the UPF and the external gateway, for the TCP acceleration device to perform acceleration according to the destination IP address recorded in the TCP flow adjustment policy, to The TCP flow generated when the APP corresponding to the destination IP address that needs to be accelerated accesses the network is accelerated, and the destination IP address that needs to be speed-limited according to the need to be recorded in the TCP flow adjustment policy, and the purpose of speed-limiting that needs to be performed. The rate of the TCP stream generated when the APP corresponding to the IP address accesses the network is limited.

It is not difficult to find that this embodiment is a device embodiment corresponding to the first embodiment, and this embodiment can be implemented in cooperation with the first embodiment. The technical details mentioned in the first embodiment are still valid in this embodiment, and are not repeated here in order to reduce repetition. Correspondingly, the technical details mentioned in this embodiment can also be applied in the first embodiment.

It is worth mentioning that all the modules involved in this embodiment are logical modules. In practical applications, a logical unit may be a physical unit, a part of a physical unit, or multiple physical units. A composite implementation of the unit. In addition, in order to highlight the innovative part of the present application, this embodiment does not introduce units that are not closely related to solving the technical problem raised by the present application, but this does not mean that there are no other units in this embodiment.

The fifth embodiment of the present application relates to a TCP flow adjustment device. As shown in FIG. 7 , the TCP flow adjustment device 700 includes a policy subscription module 701 , a policy reception module 702 and a TCP flow adjustment module 703 .

The policy subscription module 701 is configured to send a TCP flow adjustment policy subscription instruction to the NWDAF; the policy receiving module 702 is configured to receive the TCP flow adjustment policy fed back by the NWDAF according to the TCP flow adjustment policy subscription instruction, the The TCP flow adjustment policy is determined by the NWDAF based on the SMF data fed back by the session management function SMF and the UPF data fed back by the UPF; the TCP flow adjustment module 703 is configured to access the network for each application APP according to the TCP flow adjustment policy The resulting TCP stream is adjusted.

In addition, in another example, the TCP flow adjustment module 703 is specifically configured to read the destination IP address that needs to be accelerated and the destination IP address that needs to be speed-limited from the TCP flow adjustment policy; The destination IP address, to accelerate the TCP flow generated when the APP corresponding to the destination IP address that needs to be accelerated accesses the network; The TCP flow generated when the corresponding APP accesses the network is limited.

In addition, in another example, before reading the destination IP address that needs to be accelerated and the destination IP address that needs to be speed-limited from the TCP flow adjustment policy, the method further includes:

Determine whether the destination IP address that needs to be accelerated and the destination IP address that needs to be speed-limited are carried in the TCP flow adjustment policy;

If it carries the destination IP address that needs to be accelerated and the destination IP address that needs to be speed-limited, execute the destination IP address that needs to be accelerated according to the need, and correspond to the destination IP address that needs to be accelerated. The TCP flow generated when the APP accesses the network is accelerated, and the destination IP address for speed-limiting according to the needs, the TCP flow generated when the APP corresponding to the destination IP address that needs to be speed-limited accesses the network is limited. quick steps;

If only the destination IP address that needs to be accelerated is carried, only the destination IP address that needs to be accelerated is executed, and the TCP flow generated when the APP corresponding to the destination IP address that needs to be accelerated accesses the network is executed. perform accelerated steps;

If only the destination IP address that needs to be speed-limited is carried, then only the destination IP address that needs to be speed-limited will be executed. When the APP corresponding to the destination IP address that needs to be speed-limited accesses the network The TCP stream is rate-limited.

It is not difficult to find that this embodiment is a device embodiment corresponding to the second embodiment, and this embodiment can be implemented in cooperation with the second embodiment. The technical details mentioned in the second embodiment are still valid in this embodiment, and are not repeated here in order to reduce repetition. Correspondingly, the related technical details mentioned in this embodiment can also be applied in the second embodiment.

The sixth embodiment of the present application relates to a network data analysis function, as shown in FIG. 8 , including: at least one processor 801 ; and a memory 802 communicatively connected to the at least one processor; wherein the memory 802 stores a Instructions executed by the at least one processor 801, the instructions are executed by the at least one processor 801 to enable the at least one processor 801 to execute the above-described method for adjusting the TCP stream applied to the network data analysis function.

The memory 802 and the processor 801 are connected by a bus, and the bus may include any number of interconnected buses and bridges, and the bus connects one or more processors 801 and various circuits of the memory 802 together. The bus may also connect together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides the interface between the bus and the transceiver. A transceiver may be a single element or multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other devices over a transmission medium. The data processed by the processor 801 is transmitted on the wireless medium through the antenna. In this embodiment, the antenna also receives the data and transmits the data to the processor 801 .

The processor 801 is responsible for managing the bus and general processing, and may also provide various functions including timing, peripheral interface, voltage regulation, power management, and other control functions. The memory 802 may be used to store data used by the processor 801 when performing operations.

The seventh embodiment of the present application relates to a TCP acceleration apparatus, as shown in FIG. 9 , comprising: at least one processor 901 ; and a memory 902 communicatively connected with the at least one processor; wherein the memory 902 stores data that can be Instructions executed by the at least one processor 901, the instructions are executed by the at least one processor 901 to enable the at least one processor 901 to execute the adjustment method of the TCP stream applied to the TCP acceleration device.

The memory 902 and the processor 901 are connected by a bus, and the bus may include any number of interconnected buses and bridges, and the bus connects one or more processors 901 and various circuits of the memory 902 together. The bus may also connect together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides the interface between the bus and the transceiver. A transceiver may be a single element or multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other devices over a transmission medium. The data processed by the processor 901 is transmitted on the wireless medium through the antenna, and further, the antenna also receives the data and transmits the data to the processor 901 .

Processor 901 is responsible for managing the bus and general processing, and may also provide various functions including timing, peripheral interface, voltage regulation, power management, and other control functions. The memory 902 may be used to store data used by the processor 901 when performing operations.

The eighth embodiment of the present application relates to a computer-readable storage medium storing a computer program. When the computer program is executed by the processor, it realizes the adjustment method of the TCP flow applied to the network data analysis function; or, the adjustment method of the TCP flow applied to the TCP acceleration device.

That is, those skilled in the art can understand that all or part of the steps in the method of implementing the above embodiments can be completed by instructing relevant hardware through a program, and the program is stored in a storage medium and includes several instructions to make a device ( It may be a single chip microcomputer, a chip, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

Those of ordinary skill in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the present application, and in practical applications, various changes in form and details can be made without departing from the spirit and the spirit of the present application. scope.

Claims

A method for adjusting a TCP flow, applied to a network data analysis function NWDAF, the method comprising:

Send log subscription instructions to the session management function SMF and the user plane function UPF respectively;

receiving SMF data fed back by the SMF according to the log subscription instruction, and UDF data fed back by the UPF according to the log subscription instruction;

The SMF data and the UDF data are analyzed to estimate the TCP flow adjustment strategy;

Pushing the TCP flow adjustment policy to the TCP acceleration device pre-accessed between the UPF and the external gateway, for the TCP acceleration device to adjust the TCP flow generated when each application APP accesses the network according to the TCP flow adjustment policy make adjustments.
The method for adjusting a TCP flow according to claim 1, wherein the analyzing the SMF data and the UDF data, and estimating a TCP flow adjustment strategy, comprises:

combining the SMF data and the UDF data according to preset field information to obtain data to be processed;

Based on a preset trend prediction machine learning algorithm, with preset time granularity and preset area as dimensions, analyze data in different time dimensions and different usage areas in the to-be-processed data to obtain the TCP flow adjustment policy.
The method for adjusting a TCP flow according to claim 2, wherein the preset trend prediction machine learning algorithm takes preset time granularity and preset area as dimensions, and analyzes different time dimensions, The data in different usage areas is analyzed to obtain the TCP flow adjustment policy, including:

Taking the preset time granularity and the preset area as the dimensions, count the source IP addresses of the client terminals and the corresponding purposes of the APPs in the client terminals in different time dimensions and different usage areas in the data to be processed. IP address, and historical traffic usage information of each of the APPs;

Traversing the APPs, establishing a mapping relationship between the source IP address and the destination IP address corresponding to the traversed APP, and historical traffic usage information, and obtaining a historical traffic usage statistics table of the each APP;

Based on a preset trend prediction machine learning algorithm, analyze each piece of data with a mapping relationship recorded in the historical traffic usage statistics table to obtain the TCP flow adjustment policy.
The method for adjusting a TCP flow according to claim 3, wherein the preset trend prediction machine learning algorithm analyzes each piece of data with a mapping relationship recorded in the historical traffic usage statistics table, and obtains the Describe the TCP flow adjustment strategy, including:

Obtain the generation time of the historical traffic usage information in each piece of data with a mapping relationship recorded in the historical traffic usage statistics table;

For each piece of data with a mapping relationship recorded in the historical traffic usage statistics table, based on the trend prediction machine learning algorithm and the generation time, the TCP flow adjustment policy is obtained by analyzing the data.
The method for adjusting a TCP flow according to claim 3 or 4, wherein the preset trend prediction machine learning algorithm analyzes each piece of data with a mapping relationship recorded in the historical traffic usage statistics table, Obtain the TCP flow adjustment policy, including:

Based on a preset trend prediction machine learning algorithm, analyze each piece of data with a mapping relationship recorded in the historical traffic usage statistics table, and identify low-value APPs and high-value APPs that occupy a large amount of traffic;

Obtain the destination IP address corresponding to the low-value APP and the destination IP address corresponding to the high-value APP;

Taking the destination IP address corresponding to the low-value APP as the destination IP address that needs to be speed-limited, and using the destination IP address corresponding to the high-value APP as the destination IP address that needs to be accelerated, the TCP flow adjustment policy is obtained.
The method for adjusting a TCP flow according to claim 5, wherein the TCP flow adjustment policy is pushed to a TCP acceleration device pre-connected between the UPF and the external gateway, so that the TCP acceleration device can be The TCP flow adjustment policy described above adjusts the TCP flow generated when each application APP accesses the network, including:

Push the TCP flow adjustment policy to the TCP acceleration device that is pre-accessed between the UPF and the external gateway, for the TCP acceleration device to perform acceleration according to the destination IP address recorded in the TCP flow adjustment policy, to The TCP flow generated when the APP corresponding to the destination IP address that needs to be accelerated accesses the network is accelerated, and the destination IP address that needs to be speed-limited according to the need to be recorded in the TCP flow adjustment policy, and the purpose of speed-limiting that needs to be performed. The rate of the TCP stream generated when the APP corresponding to the IP address accesses the network is limited.
A method for adjusting a TCP flow, applied to a TCP acceleration device, the TCP acceleration device is respectively connected to a network data analysis function NWDAF, a user plane function UPF and an external gateway in communication and connection, the method comprising:

sending a TCP flow adjustment policy subscription instruction to the NWDAF;

receiving the TCP flow adjustment policy fed back by the NWDAF according to the TCP flow adjustment policy subscription instruction, where the TCP flow adjustment policy is determined by the NWDAF based on the SMF data fed back by the session management function SMF and the UPF data fed back by the UPF;

According to the TCP flow adjustment policy, the TCP flow generated when each application program APP accesses the network is adjusted.
The method for adjusting a TCP flow according to claim 7, wherein, according to the TCP flow adjustment policy, adjusting the TCP flow generated when each application program APP accesses the network, comprising:

Read the destination IP address that needs to be accelerated and the destination IP address that needs to be speed-limited from the TCP flow adjustment strategy;

According to the destination IP address that needs to be accelerated, the TCP flow generated when the APP corresponding to the destination IP address that needs to be accelerated accesses the network is accelerated;

According to the destination IP address that needs to be speed-limited, the TCP flow generated when the APP corresponding to the destination IP address that needs to be speed-limited accesses the network is speed-limited.
The method for adjusting a TCP flow according to claim 8, wherein, before reading the destination IP address that needs to be accelerated and the destination IP address that needs to be speed-limited from the TCP flow adjustment policy, the method further include:

Determine whether the destination IP address that needs to be accelerated and the destination IP address that needs to be speed-limited are carried in the TCP flow adjustment policy;

If it carries the destination IP address that needs to be accelerated and the destination IP address that needs to be speed-limited, execute the destination IP address that needs to be accelerated according to the need, and correspond to the destination IP address that needs to be accelerated. The TCP flow generated when the APP accesses the network is accelerated, and the destination IP address for speed-limiting according to the needs, the TCP flow generated when the APP corresponding to the destination IP address that needs to be speed-limited accesses the network is limited. quick steps;

If only the destination IP address that needs to be accelerated is carried, only the destination IP address that needs to be accelerated is executed, and the TCP flow generated when the APP corresponding to the destination IP address that needs to be accelerated accesses the network is executed. perform accelerated steps;

If only the destination IP address that needs to be speed-limited is carried, then only the destination IP address that needs to be speed-limited will be executed. When the APP corresponding to the destination IP address that needs to be speed-limited accesses the network The TCP stream is rate-limited.
A device for adjusting a TCP flow, comprising:

The log subscription module is used to send log subscription instructions to the session management function SMF and the user plane function UPF respectively;

a data receiving module, configured to receive the SMF data fed back by the SMF according to the log subscription instruction, and the UDF data fed back by the UPF according to the log subscription instruction;

A data analysis module for analyzing the SMF data and the UDF data, and estimating the TCP flow adjustment strategy;

A policy push module, configured to push the TCP flow adjustment policy to the TCP acceleration device pre-accessed between the UPF and the external gateway, so that the TCP acceleration device can access each application APP according to the TCP flow adjustment policy The TCP stream generated when the network is adjusted.
A device for adjusting a TCP flow, comprising:

a policy subscription module, for sending a TCP stream adjustment policy subscription instruction to the NWDAF;

A policy receiving module, configured to receive the TCP flow adjustment policy fed back by the NWDAF according to the TCP flow adjustment policy subscription instruction, where the TCP flow adjustment policy is fed back by the NWDAF based on the SMF data fed back by the session management function SMF and the UPF feedback The UPF data is determined;

The TCP flow adjustment module is configured to adjust the TCP flow generated when each application program APP accesses the network according to the TCP flow adjustment policy.
A network data analysis function that includes:

at least one processor; and,

a memory communicatively coupled to the at least one processor; wherein,

The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the execution of any of claims 1 to 6 The adjustment method of the TCP stream described above.
A TCP acceleration device, comprising:

at least one processor; and,

a memory communicatively coupled to the at least one processor; wherein,

The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the execution of any of claims 7 to 9 The adjustment method of the TCP stream described above.
A computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the adjustment method of the TCP flow described in any one of claims 1 to 6, or any one of claims 7 to 9, is realized The adjustment method of the TCP flow described in the item.
A TCP flow adjustment system, including:

The TCP acceleration apparatus of claim 13; and,

a network data analysis function NWDAF, a user plane function UPF and an external gateway as claimed in claim 12 communicatively connected to the TCP acceleration device; and,

a session management function SMF communicatively connected to the NWDAF; wherein,

the NWDAF is also communicatively connected to the UPF;

Described NWDAF is used for carrying out the adjustment method of TCP flow as described in any one of claim 1 to 6;

The TCP acceleration device is configured to execute the adjustment method of the TCP flow according to any one of claims 7 to 9.