TWI751712B - Mobile edge computing system and method for deleting user information of mobile edge computing service - Google Patents

Abstract

The invention provides a mobile edge computing system and a method for deleting user information of mobile edge computing service. The method of the present invention can correspondingly delete the user information of the user device when the user device is handed over to a target base station located outside the mobile edge computing range through the X2 interface, so as to prevent the user information of the user device from occupying the memory of the mobile edge computing, such that the related performance may be improved.

Description

Mobile edge computing system and method for deleting user information of mobile edge computing service

The present invention relates to a mobile edge computing management mechanism, and more particularly, to a mobile edge computing system and a method for deleting mobile edge computing service user information.

In the mobile edge computing (MEC) service, when the user device moves within the range of the MEC service, the S1 signaling capture and analysis module in the MEC system will process the user device by analyzing the relevant S1 signaling registration, handover, or offline processes. In addition, the S1 signaling capture and analysis module can transmit the user information to the traffic packet receiving and processing module in the MEC system for storage by the traffic packet receiving and processing module.

When the user device uses the low-latency service, its packets can pass through the local offload function of the traffic packet receiving and processing module of the MEC system, and forward the packets to the local server, reducing network nodes. In addition, when the user device leaves the MEC range or goes offline, the relevant user information also needs to be deleted correctly.

However, it is assumed that the target base station is outside the MEC range when the user equipment performs the handover operation, and the current serving base station of the user equipment transmits the relevant handover information to the target base station through the X2 interface. In this case, the S1 signaling capture and analysis module cannot determine that the user device has left the MEC range based on the S1 signaling, and thus cannot trigger the corresponding process of deleting user information. In addition, the S1 signaling capture and analysis module cannot notify the traffic packet receiving and processing module to delete the relevant user information. In other words, even if the user device has left the MEC range, its related user information will continue to be stored in the S1 signaling capture and analysis module and the traffic packet reception and processing module, and cannot be deleted.

With the evolution of time, the memory of the S1 signaling capture and analysis module and the traffic packet receiving and processing module will gradually be filled with user information that cannot be deleted, which may affect the S1 signaling capture and analysis module and traffic. The processing performance of the packet receiving processing module.

In view of this, the present invention provides a mobile edge computing system and a method for deleting user information of a mobile edge computing service, which can be used to solve the above technical problems.

The present invention provides a mobile edge computing system, which includes an S1 signal capturing and analyzing module and a communication packet receiving and processing module. The communication packet receiving and processing module receives a communication packet. In response to determining that the traffic packet is an end marker packet, the traffic packet receiving and processing module obtains a first tunnel endpoint identifier (TEID) from the end marker packet, and sends a first delete including the first TEID User commands to S1 signaling capture and analysis module. The S1 signaling capture analysis module searches for a first user device corresponding to the first TEID in response to the first delete user command, and determines whether the first user device has moved to a mobile edge computing range corresponding to a mobile edge computing service In addition, the S1 signaling capture and analysis module stores a first user information of the first user device. In response to determining that the first user device has moved out of the mobile edge computing range, the S1 signaling capture and analysis module deletes the first user information of the first user device.

The present invention provides a method for deleting user information of a mobile edge computing service, which is suitable for a mobile edge computing system including an S1 signaling capture and analysis module and a communication packet receiving and processing module. The packet receiving and processing module receives a traffic packet; in response to determining that the traffic packet is an end marker packet, the traffic packet receiving and processing module obtains a first tunnel endpoint identifier (TEID) from the end marker packet. , and send a first delete user command including the first TEID to the S1 signaling capture and analysis module; the S1 signal capture and analysis module responds to the first delete user command to find a first corresponding to the first TEID a user device, and determining whether the first user device moves out of a mobile edge computing range corresponding to a mobile edge computing service, wherein the S1 signaling capture and analysis module stores a first user information of the first user device; In response to determining that the first user device has moved out of the mobile edge computing range, the S1 signaling extraction and analysis module deletes the first user information of the first user device.

Please refer to FIG. 1 , which is a schematic diagram of a mobile edge computing system according to an embodiment of the present invention. As shown in FIG. 1 , the MEC system 100 may include an S1 signaling capture and analysis module 102 , a traffic packet receiving and processing module 104 and a user timeout detection module 106 .

In the embodiment of the present invention, the S1 signaling capture and analysis module 102 may store the first user information of the first user device. In some embodiments, the first user information is, for example, GPRS tunnel protocol (GTP) user information of the first user device, which includes a first tunnel endpoint identifier (Tunnel endpoint) of the first user device. identifier, TEID), base station IP address, service gateway, and at least one of, but not limited to, a QoS class identifier (QoS class identifier, QCI).

Similarly, the traffic packet receiving and processing module 104 may store the second user information of the first user device, wherein the content of the second user information may be the same as the first user information. Specifically, in an embodiment, when the first user device enters the MEC service range of the MEC system 100, the mobile wireless network used by the first user device can correspondingly provide an S1 user signaling information to the S1 signaling Let the capture and analysis module 102, wherein the S1 user signaling information can for example instruct to add the first user device to the MEC service.

In this case, the S1 signaling capture and analysis module 102 can obtain the first TEID, base station IP address, serving gateway, and QCI of the first user equipment from the S1 user signaling information, and correspondingly The information is stored as the first user information of the first user device. In addition, the S1 signaling capture and analysis module 102 can also send a new user command to the traffic packet receiving and processing module 104, and the traffic packet receiving and processing module 104 can respond to the new user command and send the first Information such as the first TEID of the user device, the IP address of the base station, the serving gateway, and the QCI are stored as the second user information of the first user device.

In the embodiment of the present invention, the S1 signaling capture and analysis module 102 , the traffic packet receiving and processing module 104 and the user timeout detection module 106 can cooperate to realize the deletion of MEC service user information proposed by the present invention. method, the details of which are detailed below.

Please refer to FIG. 2 , which is a flowchart of a method for deleting MEC service user information according to an embodiment of the present invention. The method of this embodiment can be executed by the MEC system 100 in FIG. 1 , and the details of each step in FIG. 2 will be described below in conjunction with the elements shown in FIG. 1 .

In this embodiment, it is assumed that the first user equipment moves from within the MEC range to outside the MEC range, and the first user equipment is accordingly handed over from the serving base station located within the MEC range to the target base station located outside the MEC range tower. In some embodiments, if there is an X2 interface connection between the serving base station and the target base station, the serving base station and the target base station can exchange handover messages associated with the first user equipment through the X2 interface. In this case, the S1 signaling capture and analysis module 102 may not be able to know that the first user equipment has been handed over to the target base station outside the MEC range because the relevant handover information cannot be captured.

However, after the first user equipment is handed over to the target base station, the mobile core network generally sends an end marker packet to the traffic packet receiving and processing module 104 accordingly. In one embodiment, the end marker packet is, for example, a GTP end marker packet, which may include the first TEID of the first user equipment. Therefore, the S1 signaling capture analysis module 102 and the traffic packet reception processing module 104 can accordingly execute the method of the present invention based on the end marker packet, so as to delete the user information related to the first user device in the MEC service The purpose is as follows.

First, in step S210, the traffic packet receiving and processing module 104 can receive the traffic packet P1. In the embodiment of the present invention, it is assumed that the traffic packet P1 is the above-mentioned GTP end marker packet including the first TEID. Therefore, in step S220, in response to determining that the traffic packet P1 is an end marker packet, the traffic packet receiving and processing module 104 can obtain the first TEID from the end marker packet, and send a first delete user command EU1 including the first TEID to the S1 signaling capture and analysis module 102 .

Correspondingly, in step S230, the S1 signaling capture analysis module 102 may search for the first user device corresponding to the first TEID in response to the first delete user command EU1, and determine whether the first user device has moved to the MEC service outside the corresponding MEC range.

In some embodiments, if the target base station to which the first user equipment is handed over is still within the MEC range, the S1 signaling capture and analysis module 102 can capture the movement of the target base station and the mobile core network Related S1AP signaling between management entities (MMEs), such as attach request/service request signaling, initial context setup request signaling and initial context setup response setup response) signaling.

Conversely, when the target base station is outside the MEC range, the S1 signaling capture and analysis module 102 cannot capture the above-mentioned S1AP signaling. Therefore, when the S1 signaling capture and analysis module 102 finds the first user equipment corresponding to the first TEID, it can determine whether the first user equipment exists by judging whether the above-mentioned S1AP signaling related to the target base station exists. Moved out of the MEC range corresponding to the MEC service. Specifically, if the S1 signaling extraction and analysis module 102 determines that the above-mentioned S1AP signaling associated with the target base station has been captured, the S1 signaling extraction and analysis module 102 can correspondingly determine that the first user equipment is still in the MEC Otherwise, it can be determined that the first user equipment has left the MEC range, but it is not limited to this.

In step S240, in response to determining that the first user device has moved out of the MEC range, the S1 signaling capture and analysis module 102 may delete the first user information of the first user device.

In other embodiments, in response to determining that the first user device has not moved out of the MEC range, the S1 signaling capture and analysis module 102 may not delete the first user information of the first user device, and may update the first user accordingly Information (such as updating the first TEID and the IP address of the serving base station, etc.). Specifically, the S1 signaling capture and analysis module 102 can send a modifying user data command to the traffic packet receiving and processing module 104, and the traffic packet receiving and processing module 104 can be updated in response to the modifying user data command The stored second user information, but not limited to this.

In addition, in some embodiments, after step S240, the S1 signaling capture and analysis module 102 may further send the second delete user command EU2 to the traffic packet receiving and processing module 104, and the traffic packet receiving and processing module 104 The stored second user information may be deleted in response to the second delete user command EU2.

In other embodiments, before the first user information and the second user information are deleted, the user timeout detection module 106 may also detect whether the first user device has not been transmitting for a predetermined time (eg, 30 seconds) ). In response to determining that the first user device has not performed the transmission for the predetermined time, the user timeout detection module 106 may set the first timeout flag corresponding to the first user device in the traffic packet reception processing module 104 is true (true), otherwise the first timeout flag can be set to false (false).

Correspondingly, in response to the traffic packet receiving and processing module 104 determining that the above-mentioned first timeout flag is set to be true, a third delete user command EU3 can be sent to the S1 signaling extraction and analysis module 102, and the S1 signaling is extracted. The analysis module 102 can delete the first user information of the first user device in response to the third delete user command EU3, and send the fourth delete user command EU4 to the traffic packet receiving and processing module 104. Next, the traffic packet receiving and processing module 104 may delete the second user information in response to the fourth delete user command EU4.

On the other hand, if the traffic packet receiving and processing module 104 determines that the first timeout flag is false, it may not send the third delete user command EU3 to S1 to the signaling capture analysis module 102 , but it is not limited to this.

As can be seen from the above, when the first user equipment is handed over to the target base station located outside the MEC range, the S1 signaling capture and analysis module 102 and the traffic packet reception and processing module 104 can be respectively based on the corresponding end marker packets. The stored first user information and the second user information are deleted, so as to prevent the related user information of the first user device from occupying the memory of the S1 signaling capture and analysis module 102 and the traffic packet receiving and processing module 104, thereby achieving The effect of improving performance.

In some embodiments, when the first user equipment located within the MEC is offline or in other similar situations, the S1 signaling capture and analysis module 102 may receive the S1 user signaling information indicating deletion of the first user equipment, and The S1 signaling capture and analysis module 102 can correspondingly delete the stored first user information. After that, the S1 signaling capture and analysis module 102 can send a fifth delete user command to the traffic packet receiving and processing module 104, and the traffic packet receiving and processing module 104 can respond to the fifth delete user command to delete all Stored second user information.

In order to make the above concepts easier to understand, FIG. 3 and FIG. 4 are supplemented for further description below. Please refer to FIG. 3 , which is an application scenario diagram according to the first embodiment of the present invention. In the first embodiment, it is assumed that the first user equipment U1 has been handed over to a target base station located outside the MEC range, and the traffic packet receiving and processing module 104 receives the traffic packet as the indicated end marker packet. It can be seen from FIG. 3 that the TEID recorded in the end marker packet is "5678".

In this case, the traffic packet receiving and processing module 104 can accordingly find the second user information 312 corresponding to the first user device based on the TEID “5678” (which also records the TEID “5678”). Correspondingly, the traffic packet receiving and processing module 104 can send the first delete user command EU1 to S1 to the signaling capture analysis module 102 .

Next, after the S1 signaling extraction and analysis module 102 determines that the first user device U1 has left the MEC range, the S1 signaling extraction and analysis module 102 can delete the first user information 311 of the first user device U1, and can use the The second delete user command EU2 requests the traffic packet reception processing module 104 to delete the stored second user information 312 .

Please refer to FIG. 4 , which is an application scenario diagram according to the second embodiment of the present invention. In the first embodiment, it is assumed that the first user device U1 has been handed over to a target base station located outside the MEC range, and the user timeout detection module 106 correspondingly detects that the first user device U1 has not been The transmission takes place for a preset time. Therefore, the user timeout detection module 106 can set the first timeout flag in the second user information to true.

In this case, the traffic packet receiving and processing module 104 can correspondingly send the third delete user command EU3 to the S1 signaling extraction and analysis module 102, and the S1 signaling extraction and analysis module 102 can respond to the third deletion The user instructs EU3 to delete the first user information 311 of the first user device U1 , and sends a fourth deletion user command EU4 to the traffic packet receiving and processing module 104 . Next, the traffic packet receiving and processing module 104 may delete the second user information 312 in response to the fourth delete user command EU4.

To sum up, when the user device is handed over to the target base station outside the MEC range through the X2 interface, the S1 signaling capture and analysis module and the traffic packet reception and processing module of the present invention can be terminated according to the corresponding The marked packets respectively delete the stored user information of the user device. In addition, when the user timeout detection module detects that the user device has not been transmitting for a preset time, the S1 signaling capture and analysis module and the traffic packet reception and processing module of the present invention can also correspondingly The stored user information of the user device is deleted. In this way, the related user information of the user device can be prevented from occupying the memory of the S1 signaling capture and analysis module and the traffic packet receiving and processing module, thereby achieving the effect of improving performance.

Although the present invention has been disclosed above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

100:MEC System 102: S1 signaling capture and analysis module 104: Communication packet receiving and processing module 106: User timeout detection module 311: First User Information 312: Second user information EU1: First delete user command EU2: Second delete user command EU3: Third delete user command EU4: Fourth delete user command U1: first user device P1: traffic packet S210~S240: Steps

FIG. 1 is a schematic diagram of a mobile edge computing system according to an embodiment of the present invention. FIG. 2 is a flowchart of a method for deleting MEC service user information according to an embodiment of the present invention. FIG. 3 is an application scenario diagram according to the first embodiment of the present invention. FIG. 4 is an application scenario diagram according to a second embodiment of the present invention.

S210~S240: Steps

Claims (9)

A mobile edge computing system, comprising: an S1 signaling capture and analysis module; and a communication packet reception and processing module, connected to the S1 signaling capture and analysis module, wherein: the communication packet reception and processing module Receive a traffic packet; in response to determining that the traffic packet is an end marker packet, the traffic packet receiving and processing module obtains a first tunnel endpoint identifier (TEID) from the end marker packet, and sends A first delete user command including the first TEID is sent to the S1 signaling extraction and analysis module; the S1 signaling extraction and analysis module searches for a corresponding to the first TEID in response to the first delete user command a first user device, and determine whether the first user device moves out of a mobile edge computing range corresponding to a mobile edge computing service, wherein the S1 signaling capture and analysis module stores a first user device of the first user device a user information, wherein the first user information includes GPRS tunneling protocol user information of the first user device, which includes at least one of a base station IP address, a service gateway, and a service quality level identifier of the first user device one; and in response to determining that the first user device has moved out of the mobile edge computing range, the S1 signaling capture and analysis module deletes the first user information of the first user device. The mobile edge computing system according to claim 1, wherein the traffic packet receiving and processing module stores a second user information of the first user device, and the S1 The signaling capture and analysis module further sends a second delete user command to the traffic packet receiving and processing module, and the traffic packet receiving and processing module deletes the second user information in response to the second delete user command. The mobile edge computing system according to claim 1, further comprising a user timeout detection module connected to the traffic packet receiving and processing module, which is configured to: detect whether the first user device has not been processed The transmission reaches a preset time; in response to determining that the first user device has not performed transmission for the preset time, a first timeout flag corresponding to the first user device in the traffic packet receiving and processing module Set to true, otherwise set the first timeout flag to false. The mobile edge computing system of claim 3, wherein the traffic packet receiving and processing module is further configured to: in response to determining that the first timeout flag is set to be true, send a third delete user command to the S1 a signaling extraction and analysis module, wherein the S1 signaling extraction and analysis module deletes the first user information of the first user device in response to the third delete user command, and sends a fourth delete user command to the The communication packet receiving and processing module is used to delete the second user information in response to the fourth delete user command. The mobile edge computing system of claim 1, wherein the traffic packet receiving and processing module stores a second user information of the first user device, and is responsive to determining that the first user device has not moved to the mobile edge Outside the computational scope, the S1 signaling capture and analysis module is further configured to: Sending a modifying user data command to the traffic packet receiving and processing module, wherein the traffic packet receiving and processing module updates the second user information in response to the modifying user data command. The mobile edge computing system of claim 1, wherein the traffic packet receiving and processing module stores a second user information of the first user device, and the S1 signaling capture and analysis module is further configured to: Receive an S1 user signaling information; in response to determining that the S1 user signaling information indicates to delete the first user device, delete the first user information of the first user device, and send a fifth delete user command to the traffic A packet receiving and processing module, and the traffic packet receiving and processing module deletes the second user information in response to the fifth delete user command. The mobile edge computing system of claim 6, wherein the S1 signaling capture and analysis module is further configured to: store the first user in response to determining that the S1 user signaling information instructs to add the first user device the first user information of the device, and send a new user command to the traffic packet receiving and processing module, wherein the traffic packet receiving and processing module stores the first user device in response to the new user command Second User Information. The mobile edge computing system of claim 1, wherein the first user information includes GPRS tunneling protocol user information of the first user device, and further includes the first TEID of the first user device. A method for deleting user information of mobile edge computing service, suitable for a mobile edge computing system including an S1 signaling capture and analysis module and a traffic packet receiving and processing module, the method comprises: receiving by the traffic packet The processing module receives a traffic packet; in response to determining that the traffic packet is an end marker packet, the traffic packet receiving and processing module obtains a first tunnel endpoint identifier (TEID) from the end marker packet ), and send a first delete user command including the first TEID to the S1 signaling capture and analysis module; the S1 signal capture and analysis module responds to the first delete user command to search for the corresponding a first user device of the first TEID, and determine whether the first user device moves out of a mobile edge computing range corresponding to a mobile edge computing service, wherein the S1 signaling capture and analysis module stores the first A first user information of the user device; in response to determining that the first user device has moved out of the mobile edge computing range, the S1 signaling capture analysis module deletes the first user information of the first user device , wherein the first user information includes the GPRS tunneling protocol user information of the first user device, which includes at least one of the base station IP address, service gateway, and service quality level identifier of the first user device.

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