CN106304228B - A PGW switching control method, system and server - Google Patents

Abstract

The invention discloses a PGW switching control method, comprising: a terminal sends current location information to a source PGW; the source PGW detects user data delay information, and reports judgment information to a server; wherein, the judgment information includes current location information, user Data delay information, source PGW information, MME information, APN name; the server compares the received judgment information with the historical information stored in the database, and judges whether PGW switching is required based on the comparison result. When PGW switching is required, Send a PGW switching instruction to the MME; MME sends a detachment request to the terminal; the terminal initiates an attachment according to the detachment request, and selects the current optimal PGW as the target PGW; this method can control the terminal to perform PGW switching at the optimal time, reducing the The circuitous route improves user experience; the invention also discloses a PGW switching control system and server.

Description

A PGW switching control method, system and server

technical field

The invention relates to the field of mobile communication, in particular to a PGW switching control method, system and server.

Background technique

In the 4G standard, when a user accesses the EPC network (that is, the core network of the 4G mobile communication network), he will choose a PGW to anchor, and the PGW will always serve the user's data access, that is, the user's data needs to pass The PGW accesses the data network until the user detaches. Under normal circumstances, the PGW will not change, but as the user's location changes, there will be a data detour when accessing the data network through the fixed PGW anchored during the initial access, thus affecting the user's service experience.

In order to reduce routing detours, the 4G standard subsequently added the function of PGW reselection (handover), that is, when the user is in an idle state, the EPC can initiate user reattachment, and when the user attaches again, the PGW with better anchoring can be selected up

However, in actual deployment, it is a difficult problem when the EPC core network triggers the user to initiate reattachment, because the core network has no good means to judge when to switch the PGW. Therefore, how to solve the problem that the current EPC network cannot effectively determine when to perform PGW reselection, resulting in easy routing detours, is a technical problem that needs to be solved by those skilled in the art.

Contents of the invention

The purpose of the present invention is to provide a PGW switching control method, system and server, which can control a terminal to perform PGW switching at an optimal time, reduce circuitous routes, and improve user experience.

In order to solve the above technical problems, the present invention provides a PGW handover control method, including:

The terminal sends the current location information to the source PGW;

The source PGW detects user data delay information, and reports the judgment information to the server; wherein, the judgment information includes the current location information, the user data delay information, source PGW information, MME information, and APN name;

The server compares the received judgment information with historical information stored in the database, and judges whether PGW switching is required according to the comparison result, and sends a PGW switching instruction to the MME when PGW switching is required;

The MME sends a detach request to the terminal;

The terminal initiates an attach according to the detach request, and selects the currently optimal PGW as the target PGW.

Among them, the terminal sends the current location information to the source PGW, including:

The terminal sends current location information to the source PGW according to a preset period; or,

When the terminal detects that the location information changes, it sends the current location information to the source PGW.

Wherein, the source PGW detects user data delay information, including:

The source PGW detects first delay information from the source PGW to the terminal;

The source PGW detects second delay information from the source PGW to the service server according to the address of the service server, and uses the first delay information and the second delay information as user data delay information; Wherein, the source PGW analyzes the header of the user data packet to obtain the address of the service server.

Wherein, the method also includes:

The target PGW reports the newly acquired judgment information to the server;

The server stores the newly acquired judgment information in a corresponding position in the database.

The present invention also provides a PGW switching control system, including:

The terminal is configured to send the current location information to the source PGW; initiate attachment according to the detachment request, and select the currently optimal PGW as the target PGW;

The source PGW is used to detect user data delay information, and report the judgment information to the server; wherein, the judgment information includes the current location information, the user data delay information, source PGW information, MME information, APN name ;

The server is configured to compare the received judgment information with historical information stored in the database, and judge whether PGW switching is required according to the comparison result, and send a PGW switching instruction to the MME when PGW switching is required;

The MME is configured to send a detachment request to the terminal.

Wherein, the terminal includes:

The location sending unit is configured to send the current location information to the source PGW according to a preset period; or, send the current location information to the source PGW when a change in the location information is detected.

Wherein, the source PGW includes:

a first detection unit, configured to detect first delay information from the source PGW to the terminal;

The second detection unit is configured to detect the second delay information from the source PGW to the service server according to the address of the service server, and use the first delay information and the second delay information as user data time extension information; wherein, the source PGW obtains the address of the service server by parsing the header of the user data packet.

Among them, the system also includes:

The destination PGW is configured to report newly acquired judgment information to the server;

The server is also used to store the newly acquired judgment information in a corresponding position in the database.

The present invention also provides a server, including:

The receiving unit is configured to receive the judgment information sent by the source PGW; wherein the judgment information includes the current location information of the terminal, the user data delay information, source PGW information, MME information, and APN name;

A judging unit, configured to compare the judging information with historical information stored in the database, and judge whether PGW switching is required according to the comparison result;

The sending unit is configured to send a PGW switching instruction to the MME when PGW switching is required, so that the terminal initiates attachment according to the detach request sent by the MME, and selects the currently optimal PGW as the target PGW.

Among them, the server also includes:

An updating unit, configured to store the judgment information newly acquired by the target PGW in a corresponding position in the database.

A PGW switching control method provided by the present invention includes: the terminal sends the current location information to the source PGW; the source PGW detects user data delay information, and reports the judgment information to the server; wherein, the judgment information includes the current location information, User data delay information, source PGW information, MME information, APN name; the server compares the received judgment information with the historical information stored in the database, and judges whether PGW switching is required based on the comparison result. When PGW switching is required , send a PGW switching instruction to the MME; the MME sends a detachment request to the terminal; the terminal initiates an attachment according to the detachment request, and selects the current optimal PGW as the target PGW; this method can control the terminal to perform PGW switching at the optimal time, reducing The route detour is improved, the user experience is improved, and the solution is easy to implement; the present invention also provides a PGW switching control system and server, which have the above-mentioned beneficial effects, and will not be repeated here.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in 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 invention, and those skilled in the art can also obtain other drawings according to the provided drawings on the premise of not paying creative efforts.

FIG. 1 is a flowchart of a PGW handover control method provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of data flow in a PGW handover control method provided by an embodiment of the present invention;

Fig. 3 is a structural block diagram of a PGW switching control system provided by an embodiment of the present invention.

Detailed ways

The core of the present invention is to provide a PGW switching control method, system and server, which can control a terminal to perform PGW switching at an optimal time, reduce roundabout routing, and improve user experience.

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to FIG. 1, which is a flowchart of a PGW handover control method provided by an embodiment of the present invention; the method may include:

S100. The terminal sends the current location information to the source PGW;

Among them, the terminal sends its current location information to the source PGW in a timely manner. In order to improve the validity and usability of sending data and reduce the power consumption of the terminal, it is not necessary to send the current location information in real time; The PGW sends the current location information; or, when the terminal detects that the location information changes, the terminal sends the current location information to the source PGW.

Specifically, the terminal periodically reports the current location information, or when the terminal changes the cell or TA (Tracking Area) to which it belongs, that is, when the terminal detects that the location information changes, it will report the latest location information to the source PGW. Or if any of the two conditions is satisfied, the latest location information needs to be reported to the source PGW.

S110. The source PGW detects user data delay information, and reports the judgment information to the server; wherein, the judgment information includes at least the current location information of the terminal, the user data delay information, source PGW information, MME information, APN name; the specific content contained in the judgment information can also be added or modified according to user needs.

Specifically, the source PGW here can periodically monitor user data delay information, and the detection period can be confirmed by the user according to actual conditions. The detection cycle is not as short as possible, but also consider the hardware level of the server, the efficiency of frequent comparative analysis, etc.

The user data delay information detected by the source PGW may include:

The source PGW detects first delay information from the source PGW to the terminal;

The source PGW detects second delay information from the source PGW to the service server according to the address of the service server, and uses the first delay information and the second delay information as user data delay information; Wherein, the source PGW analyzes the header of the user data packet to obtain the address of the service server.

S120. The server compares the received judgment information with historical information stored in the database, and judges whether PGW switching is required according to the comparison result, and sends a PGW switching instruction to the MME when PGW switching is required;

Specifically, the comparison process can be based on the data delay situation in the database under similar hardware conditions, and the data delay situation after switching the PGW in this case, if the statistics and recorded information in the database are the data after switching If the delay situation is better than before the handover, it is determined that a PGW handover is required. That is, the server confirms in the database the reference value of the data delay in a similar situation to the judging information, and determines whether switching is required based on information such as the data delay after the replacement of the PGW.

Among them, this embodiment can also refine the analysis rules according to the actual needs of users. For example, when the information recorded in the database is that the data delay after the switch is better than before the switch, and it is judged whether the delay reduction is greater than the threshold, if all meet the Then it is determined that the PGW switching needs to be performed. The analysis rules for specific comparison and judgment are not limited here. It is only necessary to analyze the data delay information before and after switching in similar situations in the past based on historical massive data to obtain the result of switching.

S130. The MME sends a detachment request to the terminal;

S140. The terminal initiates an attachment according to the detachment request, and selects a currently optimal PGW as a target PGW.

Specifically, the MME initiates a user reattachment process. The MME sends a detachment request to the terminal (the detachment request may include a PGW switching instruction), which instructs the terminal to immediately re-initiate the attachment, and the terminal immediately re-initiates the attachment after detachment according to the instruction, and selects the currently optimal PGW provide services for it.

In order to enable the server to completely record the data delay situation of the terminal before and after switching, so as to update the analysis data in the corresponding situation, preferably, this embodiment also includes:

The target PGW reports the newly acquired judgment information to the server;

The server stores the newly acquired judgment information in a corresponding position in the database.

Specifically, this step is to further update the database, that is, the target PGW also needs to report the detailed information after switching to the big data server, so that the server can obtain the detailed information after switching in time, so that the switching effect can also be obtained. Improve the accuracy of subsequent server-guided switching operations. That is, the target PGW reports relevant information to the big data server. After the switching of the PGW corresponding to the terminal is completed, the target PGW reports the user's location information, target PGW information, MME information, APN name and the latest monitored data delay information to the big data server, and the big data server stores the relevant information in the big data database , used to assist subsequent PGW handover judgment.

The following takes a specific PGW switching as an example for illustration, please refer to Figure 2, which shows the data flow in this example; the big data server in the figure is the above server, and the content of information reporting is the reported judgment information. The specific workflow is as follows:

1. The terminal accesses the EPC network and selects the source PGW to serve it.

2. The terminal sends its latest location information to the source PGW periodically or when its location changes.

3. The source PGW periodically detects the data delay of the user; the data delay measured by the PGW may include two parts of data. The first is the data delay between the PGW and the terminal; the second is the delay between the PGW and the service server. The PGW can parse out the IP address of the service server from the packet header of the terminal data packet, and then detect the connection between the PGW and the service server. Data latency.

4. The source PGW reports the current location of the terminal, the MME and PGW information of the server providing the terminal, the APN name and the measured data delay to the big data server. That is, the judgment information is reported.

5. The big data server makes switching judgments based on the received information and massive historical data.

6. When the big data server determines that the terminal needs to perform PGW switching, the big data server sends a PGW switching instruction to the MME.

7. The MME sends a detachment request to the terminal, which instructs the terminal to initiate reattachment immediately.

8. The terminal initiates reattachment according to the instruction, and selects a new optimal PGW (target PGW) to provide services for it;

9. The destination PGW tests the user data delay.

10. The destination PGW reports the current location of the terminal, the MME and PGW information of the server providing the terminal, the APN name and the measured data delay to the big data server.

11. The big data service area stores the received information to assist subsequent handover decisions.

Based on the above technical solution, the PGW switching control method provided by the embodiment of the present invention aims at the problem that the current EPC network cannot effectively judge when to perform PGW reselection, which leads to the easy formation of circuitous routes. By using the big data analysis of the core network, comprehensively refer to the current terminal The location of the current selected PGW, the name of the APN accessed this time, the measured data delay, and massive historical data information are used to make a PGW handover decision, and then the core network controls and initiates the PGW reselection (handover) operation. The implementation is simple, and the terminal can be controlled to perform PGW handover at the optimal time, which can reduce routing circuitousness and improve user experience.

The PGW switching control system and server provided by the embodiments of the present invention are introduced below, and the PGW switching control system and server described below and the PGW switching control method described above may be referred to in correspondence.

Please refer to FIG. 3. FIG. 3 is a structural block diagram of a PGW switching control system provided by an embodiment of the present invention; the system may include:

The terminal 10 is configured to send the current location information to the source PGW; initiate attachment according to the detachment request, and select the currently optimal PGW as the target PGW;

The source PGW20 is used to detect user data delay information, and report the judgment information to the server; wherein, the judgment information includes the current location information, the user data delay information, source PGW information, MME information, APN name ;

The server 30 is configured to compare the received judgment information with historical information stored in the database, and judge whether PGW switching is required according to the comparison result, and send a PGW switching instruction to the MME when PGW switching is required;

MME40, configured to send a detachment request to the terminal;

The destination PGW50 is used as the new source PGW of the terminal.

Based on the above embodiments, the terminal 10 includes:

The location sending unit is configured to send the current location information to the source PGW according to a preset period; or, send the current location information to the source PGW when a change in the location information is detected.

Based on the above embodiments, the source PGW20 includes:

a first detection unit, configured to detect first delay information from the source PGW to the terminal;

The second detection unit is configured to detect the second delay information from the source PGW to the service server according to the address of the service server, and use the first delay information and the second delay information as user data time extension information; wherein, the source PGW obtains the address of the service server by parsing the header of the user data packet.

Based on the foregoing embodiments, the system also includes:

The destination PGW50 is also used to report the newly acquired judgment information to the server;

The server 30 is also configured to store the newly acquired judgment information in a corresponding location in the database.

The embodiment of the present invention also provides a kind of server, and this server has the ability of processing big data, and it comprises:

The receiving unit is configured to receive the judgment information sent by the source PGW; wherein the judgment information includes the current location information of the terminal, the user data delay information, source PGW information, MME information, and APN name;

A judging unit, configured to compare the judging information with historical information stored in the database, and judge whether PGW switching is required according to the comparison result;

The sending unit is configured to send a PGW switching instruction to the MME when PGW switching is required, so that the terminal initiates attachment according to the detach request sent by the MME, and selects the currently optimal PGW as the target PGW.

Based on the foregoing embodiments, the server also includes:

An updating unit, configured to store the judgment information newly acquired by the target PGW in a corresponding position in the database.

Based on the above technical solution, the server proposed in the embodiment of the present invention can use core network big data analysis to comprehensively refer to the location of the current terminal, the currently selected PGW, the name of the APN accessed this time, the measured data delay and a large amount of historical data Information is used to make PGW switching decisions, and when PGW switching is required, PGW switching instructions are issued. The processing speed is fast, and the terminal can be controlled to perform PGW switching at the optimal time, which can reduce routing detours and improve user experience.

Each embodiment in the description is described in a progressive 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 disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related information, please refer to the description of the method part.

Professionals can further realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software or a combination of the two. In order to clearly illustrate the possible For interchangeability, in the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

The steps of the methods or algorithms described in connection with the embodiments disclosed herein may be directly implemented by hardware, software modules executed by a processor, or a combination of both. Software modules can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other Any other known storage medium.

The PGW handover control method, system and server provided by the present invention have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (10)

1. A PGW switching control method, characterized in that, comprising: The terminal sends the current location information to the source PGW; The source PGW detects user data delay information, and reports the judgment information to the server; wherein, the judgment information includes the current location information, the user data delay information, source PGW information, MME information, and APN name; The server compares the received judgment information with historical information stored in the database, and judges whether PGW switching is required according to the comparison result, and sends a PGW switching instruction to the MME when PGW switching is required; specifically, the The server confirms in the database a data delay reference value similar to the judgment information, and determines whether switching is required based on the data delay information after replacing the PGW; The MME sends a detach request to the terminal; The terminal initiates an attach according to the detach request, and selects the currently optimal PGW as the target PGW. 2. The PGW handover control method according to claim 1, wherein the terminal sends the current location information to the source PGW, comprising: The terminal sends current location information to the source PGW according to a preset period; or, When the terminal detects that the location information changes, it sends the current location information to the source PGW. 3. The PGW handover control method according to claim 2, wherein the source PGW detects user data delay information, comprising: The source PGW detects first delay information from the source PGW to the terminal; The source PGW detects second delay information from the source PGW to the service server according to the address of the service server, and uses the first delay information and the second delay information as user data delay information; Wherein, the source PGW analyzes the header of the user data packet to obtain the address of the service server. 4. The PGW handover control method according to any one of claims 1-3, further comprising: The target PGW reports the newly acquired judgment information to the server; The server stores the newly acquired judgment information in a corresponding position in the database. 5. A PGW switching control system, characterized in that, comprising: The terminal is used to send the current location information to the source PGW; initiate attachment according to the detachment request, and select the currently optimal PGW as the destination PGW; The source PGW is used to detect user data delay information, and report the judgment information to the server; wherein, the judgment information includes the current location information, the user data delay information, source PGW information, MME information, APN name ; The server is configured to compare the received judgment information with historical information stored in the database, and judge whether PGW switching is required according to the comparison result, and send a PGW switching instruction to the MME when PGW switching is required; specifically, The server confirms in the database a data delay reference value similar to the judgment information, and determines whether switching is required based on the data delay information after replacing the PGW; MME, configured to send the detach request to the terminal. 6. The PGW switching control system according to claim 5, wherein the terminal comprises: The location sending unit is configured to send the current location information to the source PGW according to a preset period; or, send the current location information to the source PGW when a change in the location information is detected. 7. The PGW switching control system according to claim 6, wherein the source PGW comprises: a first detection unit, configured to detect first delay information from the source PGW to the terminal; The second detection unit is configured to detect the second delay information from the source PGW to the service server according to the address of the service server, and use the first delay information and the second delay information as user data time extension information; wherein, the source PGW obtains the address of the service server by parsing the header of the user data packet. 8. The PGW switching control system according to any one of claims 5-7, further comprising: The destination PGW is configured to report newly acquired judgment information to the server; The server is also used to store the newly acquired judgment information in a corresponding position in the database. 9. A server, characterized in that, comprising: The receiving unit is configured to receive judgment information sent by the source PGW; wherein the judgment information includes current location information of the terminal, user data delay information, source PGW information, MME information, and APN name; A judging unit, configured to compare the judging information with historical information stored in the database, and judge whether PGW switching is required according to the comparison result; The sending unit is configured to send a PGW switching instruction to the MME when PGW switching is required, so that the terminal initiates attachment according to the detach request sent by the MME, and selects the currently optimal PGW as the target PGW. 10. The server according to claim 9, further comprising: An updating unit, configured to store the judgment information newly acquired by the target PGW in a corresponding position in the database.