WO2020043074A1 - Data stream processing method, apparatus and system - Google Patents

Abstract

Provided in the embodiments of the present application are a data stream processing method, apparatus, and system, which are used to monitor a local service of a terminal device. The method comprises: an SGW-U receiving second address information of a terminal device that is sent by an SGW-C; then, after the SGW-U receives a data stream of the terminal device, if determined that the data stream of the terminal device is a data stream of a local service, updating source address information of the data stream to be the second address information, and sending the updated data stream to a second user plane PDN gateway (PGW-U); the second PGW-U receiving the data stream sent by the SGW-U, and sending the data stream to a local server. The embodiments of the present application may monitor local service while reducing flow circuitousness.

Description

Data stream processing method, device and system

This application claims the priority of the Chinese application filed on August 27, 2018, with application number 201810981967.0, and the invention name is "a method, device and system for data stream processing", and filed on April 15, 2019, The priority of the Chinese application with application number 201910299927.2 and the invention name "a method, device and system for data stream processing" is incorporated herein by reference in its entirety.

Technical field

The present application relates to the field of wireless communication technologies, and in particular, to a data stream processing method, device, and system.

Background technique

The 3rd Generation Partnership Project (3GPP) describes an evolved packet core network (EPC) network architecture. Based on this network architecture, data flow can be transferred between the terminal and the server. In the EPC network architecture, there are some monitoring network elements that can be used for terminal service monitoring, such as online charging (online charging system (OCS)), which can be used for service charging management. For example, a lawful interception gateway , LIG), can be used for legal interception of terminal equipment, etc.

However, with the popularization of the local area network, some enterprises, organizations, groups, etc. will deploy their internal dedicated local servers to handle local business. For example, enterprises deploy internal dedicated video surveillance servers for centralized management of video surveillance data in corporate campuses. Wait. Because the terminal is closer to the local server when accessing the local server in the area, in some existing technical solutions, the data stream sent by the terminal to the local server will be diverted locally to the local server, thereby enabling terminal services. Of local business cannot be monitored by the EPC network architecture.

Summary of the Invention

The embodiments of the present application provide a data stream processing method, device and system for monitoring local services of a terminal device.

In a first aspect, an embodiment of the present application provides a data stream processing method, including: the user plane service gateway SGW-U receives second address information of a terminal device sent by the control plane service gateway SGW-C; after that, the SGW-U receives After the data flow of the terminal device is determined, if the data flow of the terminal device is determined to be a data flow of the local service, the source address information of the data flow is updated to the second address information, and the updated data flow is sent to the second user plane. PDN gateway PGW-U; the second PGW-U receives the data stream sent by the SGW-U and sends the data stream to the local server.

With the above method, the SGW-U updates the source address information of the data stream of the local service to the second address information, and the second PGW-U sends the updated data stream to the local server, so that the second PGW-U can be used as the first The anchor point where the terminal device corresponding to the two address information accesses the local server, that is, the terminal device is allocated a PDN connection dedicated to transmitting the data stream of the local service, which solves the traffic generated when the terminal device sends the data stream to the local server. Roundabout problem. At the same time, the PGW-U itself has the function of obtaining related information for service monitoring in the data stream. In the embodiment of the present application, the second PGW-U is used to send the data stream to the local server, which can reduce the circuitous traffic and realize the local business. Monitoring.

In a possible implementation manner, before the SGW-U sends the updated data stream to the second PGW-U, the method further includes: the SGW-U receives the second tunnel information sent by the SGW-C; the second PGW-U receives Second tunnel information sent by PGW-C; SGW-U and second PGW-U establish a tunnel between SGW-U and second PGW-U based on the second tunnel information; in this case, SGW-U will update The subsequent data stream is sent to the second PGW-U, including: the SGW-U sends the updated data stream to the second PGW-U through the tunnel between the SGW-U and the second PGW-U.

In the EPC architecture, SGW-U and PGW-U are transmitted through a tunnel. The embodiment of the present application constructs a tunnel between the SGW-U and the second PGW-U by using the second tunnel information, so that the SGW-U and the second PGW-U can transmit a data stream according to an existing transmission mode.

In a possible implementation manner, the method further includes: if the SGW-U determines that the data stream is a non-local service data stream, sending the data stream to the first PGW-U; the first PGW-U receives the SGW-U Send the data stream and send the received data stream to the data network.

In a second aspect, an embodiment of the present application provides a data stream processing method, which includes: a control plane service gateway SGW-C obtaining location information of a terminal device; the SGW-C further selects a user plane service for the terminal device based on the location information of the terminal device The gateway SGW-U and the second user plane PDN gateway PGW-U; thereafter, the SGW-C sends instruction information to the control plane PDN gateway PGW-C, and the instruction information is used to instruct SGW-C to select a second PGW- for the terminal device. U; PGW-C receives the instruction information and assigns the second address information to the terminal device according to the instruction information; after that, PGW-C sends the second address information to SGW-C; SGW-C receives the second address information and The second address information is sent to the SGW-U.

Through the above method, the SGW-U can obtain the second address information corresponding to the second PGW-U allocated by the PGW-C to the terminal device, so that when the data flow of the terminal device is the data flow of the local service, the data The source address information of the stream is updated to the second address information, so that the data stream is shunted.

In a possible implementation manner, the method further includes: the PGW-C sends second tunnel information to the SGW-C and the second PGW-U, and the second tunnel information is used to establish the SGW-U and the second PGW- The tunnel between U; after that, SGW-C receives the second tunnel information sent by PGW-C, and sends the second tunnel information to SGW-U.

Through the above method, the second PGW-U and SGW-U can receive the second tunnel information from PGW-C and SGW-C, respectively, so that the communication between the second PGW-U and SGW-U can be established according to the second tunnel information. tunnel.

In a possible implementation manner, the method further includes: the PGW-C sends the first address information of the terminal device to the SGW-C; the SGW-C receives the first address information and sends the first address information to the terminal device .

Through the above method, the terminal device can obtain the first address information allocated by the PGW-C, so that the first address information can be used as the source address information to send a data stream. This process is compatible with the existing terminal device processing logic, reducing the The impact of local service offload on the processing logic of terminal equipment.

In a third aspect, an embodiment of the present application provides a data stream processing method, including: after receiving a data stream of a terminal device from a user plane service gateway SGW-U, if it is determined that the data stream is a data stream of a local service, The data stream is sent to the second user plane PDN gateway PGW-U; the second PGW-U receives the data stream sent by the SGW-U, and sends the data stream to the local server.

In a possible implementation manner, before the SGW-U sends the data stream to the second user plane PDN gateway PGW-U, the method further includes: the SGW-U receives the data sent by the control plane service gateway SGW-C. The second address information of the terminal device; the SGW-U updates the source address information in the data stream to the second address information.

In a possible implementation manner, the method further includes: if the SGW-U determines that the data stream is a non-local service data stream, sending the data stream to a first PGW-U; the first A PGW-U receives a data stream sent by the SGW-U, and sends the data stream to a data network.

In a fourth aspect, an embodiment of the present application provides a data stream processing method, including: SGW-C and / or PGW-C determining an SGW-U and a second PGW-U for a terminal device; the SGW-C and the SGW -U establishes a connection, and the PGW-C establishes a connection with the second PGW-U.

In a possible implementation manner, the determining, by the SGW-C for the terminal device, an SGW-U and a second PGW-U includes:

Determining, by the SGW-C, the SGW-U and the second PGW-U for the terminal device, wherein the second PGW-U and the SGW-U belong to the same network element;

The SGW-C sends third instruction information to the PGW-C, where the third instruction information is used to instruct the PGW-C to establish a connection with the second PGW-U.

In a possible implementation manner, the third indication information includes identification information of the second PGW-U, and / or identification information of the network element.

In a possible implementation manner, the SGW-C and PGW-C determine an SGW-U and a second PGW-U for the terminal device, including:

Determining, by the SGW-C, the SGW-U for the terminal device, and sending fourth instruction information to the PGW-C, where the fourth instruction information is used to instruct the PGW-C to determine for the terminal device The second PGW-U.

Determining, by the PGW-C, the second PGW-U for the terminal device according to the fourth instruction information.

In a possible implementation manner, the fourth indication information includes identification information of the SGW-U; the PGW-C determines the second PGW-U for the terminal device according to the fourth indication information The method includes: the PGW-C determines, according to the identification information of the SGW-U, a PGW-U belonging to the same network element as the SGW-U as the second PGW-U.

In a possible implementation manner, the PGW-C determines, as the second PGW-U, the PGW-U belonging to the same network element as the SGW-U according to the identification information of the SGW-U, including: The PGW-C obtains a preset correspondence relationship; the correspondence relationship is used to indicate one or more preset PGW-Us respectively corresponding to the SGW-U, and any one of the preset SGW-Us corresponds to the PGW-U Belongs to the same network element as the preset SGW-U; the PGW-C determines, based on the identification information, that among the preset correspondences, the SGW-U corresponding to the identification information belongs to the same network element PGW-U is the second PGW-U.

In a possible implementation manner, the fourth indication information includes location information of a terminal device; and the PGW-C determines the second PGW-U for the terminal device according to the fourth indication information, including: The PGW-C determines, as the second PGW-U, a PGW-U that provides services to a location corresponding to the location information according to the location information.

In a possible implementation manner, the PGW-C determines, as the second PGW-U, a PGW-U that provides services for a location corresponding to the location information according to the location information, including the PGW-U C obtains service areas corresponding to one or more preset PGW-Us respectively; the PGW-C determines a target service area to which the location information belongs, and according to the target service area, from the one or more A PGW-U corresponding to the target service area is determined in the set PGW-U as the second PGW-U.

In a possible implementation manner, the method further includes: the PGW-C assigns address information to the terminal device; and the PGW-C sends the address information to the SGW-C.

In a possible implementation manner, the address information includes second address information; after the PGW-C sends the address information to the SGW-C, the method further includes: the SGW-C sends the first address information The two address information is sent to the SGW-U.

In a possible implementation manner, the address information further includes first address information; after the PGW-C sends the address information to the SGW-C, the method further includes: the SGW-C sends the address information The first address information is sent to the terminal device.

In a possible implementation manner, the PGW-C selecting an SGW-U and a second PGW-U for the terminal device includes: the PGW-C receives the SGW-C and sends second instruction information; The PGW-C selects the second PGW-U and the SGW-U for the terminal device according to the second instruction information, wherein the SGW-U and the second PGW-U belong to the same network element ; The PGW-C sends third instruction information to the SGW-C, and the third instruction information is used to instruct the SGW-C to establish a connection with the SGW-U.

In a possible implementation manner, the second indication information includes location information of the terminal device.

In a possible implementation manner, the third indication information includes identification information of the SGW-C, or identification information of the network element.

In a fifth aspect, an embodiment of the present application provides a data stream processing method, including: the first user plane service gateway SGW-U receives second address information of a terminal device sent by the control plane service gateway SGW-C; and then, the first SGW -U After receiving the data stream of the terminal device, if it is determined that the data stream is a data stream of a local service, the source address information of the data stream is updated to the above-mentioned second address information, and the updated data stream is sent to the second SGW -U; the second SGW-U receives the data stream sent by the first SGW-U and sends the data stream to the second user plane PDN gateway PGW-U; the second PGW-U receives the data sent by the second SGW-U Stream and send that data stream to the local server.

According to a sixth aspect, an embodiment of the present application provides a data stream processing method, including: a control plane service gateway SGW-C obtains location information of a terminal device; and thereafter, the SGW-C selects a first terminal device for the terminal device according to the location information of the terminal device The user plane serving gateway SGW-U, the second SGW-U, and the second user plane PDN gateway PGW-U; after that, the SGW-C sends instruction information to the control plane PDN gateway PGW-C, and the instruction information is used to indicate that SGW-C is The terminal device selects a second SGW-U and a second PGW-U. The PGW-C receives the instruction information and assigns the second address information to the terminal device according to the instruction information. After that, the PGW-C sends the first address information to the terminal device. The second address information is sent to the SGW-C; the SGW-C receives the second address information and sends the received second address information to the first SGW-U.

In a seventh aspect, an embodiment of the present application provides a data stream processing method, including: after the first SGW-U receives a data stream of the terminal device, if it is determined that the data stream is a data stream of a local service, Sending the data stream to the second SGW-U; the second SGW-U receiving the data stream sent by the first SGW-U, and sending the data stream to the second user plane PDN gateway PGW-U The second PGW-U receives a data stream sent by the second SGW-U, and sends the data stream to a local server.

In an eighth aspect, an embodiment of the present application provides a data stream processing method, including: SGW-C and / or PGW-C determining a second SGW-U and a second PGW-U for a terminal device; the SGW-C and all The second SGW-U establishes a connection, and the PGW-C establishes a connection with the second PGW-U.

In a ninth aspect, an embodiment of the present application provides a data stream processing system. The system includes a user plane service gateway SGW-U, a control plane service gateway SGW-C, a control plane PDN gateway PGW-C, and a second user plane PDN gateway PGW. -U, where: SGW-C is used to obtain the location information of the terminal device; and based on the location information of the terminal device, SGW-U and the second PGW-U are selected for the terminal device; after that, an instruction is sent to the PGW-C Information, the instruction information is used to instruct the SGW-C to select the second PGW-U for the terminal device; PGW-C is used to receive the instruction information sent by the SGW-C, and allocate the first Second address information; after that, send the second address information to the above SGW-C; SGW-C is also used to receive the second address information and send the second address information to SGW-U; SGW-U is used for Receive the second address information of the terminal device sent by the SGW-C; after receiving the data flow of the terminal device, if it is determined that the data flow is a data flow of a local service, update the source address information of the data flow to the first Two address information, and send the updated data stream to A second PGW-U; a second PGW-U, configured to receive a data stream sent by the SGW-U, and send the data stream to a local server.

In a tenth aspect, an embodiment of the present application provides a data stream processing system, including a user plane service gateway SGW-U, a control plane service gateway SGW-C, a control plane PDN gateway PGW-C, and a second user plane PDN gateway PGW-U , Wherein: the SGW-C and / or the PGW-C are used to determine an SGW-U and a second PGW-U for a terminal device; the SGW-C is used to establish a connection with the SGW-U, so The PGW-C is configured to establish a connection with the second PGW-U; the SGW-U is configured to receive the data stream of the terminal device, and if it is determined that the data stream is a data stream of a local service, Sending the data stream to the second PGW-U; the second PGW-U is configured to receive a data stream sent by the SGW-U, and send the data stream to a local server.

According to an eleventh aspect, an embodiment of the present application provides a data stream processing system, which includes a first user plane service gateway SGW-U, a second SGW-U, a control plane service gateway SGW-C, and a control plane PDN gateway PGW- C and the second user plane PDN gateway PGW-U, where: SGW-C is used to obtain the location information of the terminal device; and according to the location information of the terminal device, the first user plane service gateway SGW-U is selected for the terminal device , The second SGW-U, and the second user plane PDN gateway PGW-U; after that, send instruction information to the PGW-C, which is used to instruct the SGW-C to select a second SGW-U and a second SGW-U for the terminal device. PGW-U; PGW-C, for receiving the instruction information sent by SGW-C, and assigning the second address information to the terminal device according to the instruction information; thereafter, sending the second address information to the above SGW-C; the above SGW -C is also used to receive the second address information and send the second address information to the first SGW-U; the first SGW-U is used to receive the second address information of the terminal device sent by the SGW-C; After receiving the data stream from the terminal device, if it is determined that the data stream is a data stream for local services , The source address information of the data stream is updated to the above-mentioned second address information, and the updated data stream is sent to the second SGW-U; the second SGW-U is configured to receive data sent by the first SGW-U And send the data stream to the second PGW-U; the second PGW-U is used to receive the data stream sent by the second SGW-U and send the received data stream to the local server.

In a twelfth aspect, an embodiment of the present application provides a data stream processing system including a first user plane service gateway SGW-U, a second SGW-U, a control plane service gateway SGW-C, a control plane PDN gateway PGW-C, and The second user plane PDN gateway PGW-U, wherein: the SGW-C and / or the PGW-C are used to determine a second SGW-U and a second PGW-U for the terminal device; the SGW-C is used for After establishing a connection with the second SGW-U, the PGW-C is used to establish a connection with the second PGW-U; the first SGW-U is used after receiving a data stream from the terminal device If it is determined that the data flow is a data flow of a local service, sending the data flow to the second SGW-U; the second SGW-U is configured to receive the data sent by the first SGW-U A data stream, and sends the data stream to a second PGW-U; the second PGW-U is configured to receive the data stream sent by the second SGW-U, and send the data stream to a local server .

According to a thirteenth aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores computer-executable instructions. When the computer-readable storage medium runs on a computer, the computer causes the computer to perform the operations provided in any of the foregoing aspects. method.

In a fourteenth aspect, an embodiment of the present application provides a device, including: a memory for storing program instructions; a processor for calling the program instructions stored in the memory, and executing the provided in any of the foregoing aspects according to the obtained program. Data stream processing methods.

In a fifteenth aspect, an embodiment of the present application provides a computer program product that, when run on a computer, causes the computer to execute the data stream processing method provided in any one of the above aspects.

These or other aspects of the present application will be more concise and easy to understand in the description of the following embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings needed to be used in the embodiments of the present invention are briefly introduced below.

Figure 1 is an EPC network architecture with gateway C / U separated;

FIG. 2 is a schematic diagram of a system architecture according to an embodiment of the present application; FIG.

3 is a schematic flowchart of a data stream processing method according to an embodiment of the present application;

4 is a schematic diagram of another EPC system architecture according to an embodiment of the present application;

5 is a possible exemplary block diagram of a device involved in an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a device according to an embodiment of the present application.

detailed description

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. The specific operation method in the method embodiment can also be applied to the device embodiment or the system embodiment. It should be noted that, in the description of the present application, "at least one" means one or more, where multiple means two or more. In view of this, in the embodiments of the present invention, “multiple” may also be understood as “at least two”. "And / or" describes the association relationship of the associated objects, and indicates that there can be three kinds of relationships. For example, A and / or B can mean that there are three cases in which A exists alone, A and B exist, and B exists alone. In addition, the character "/", unless otherwise specified, generally indicates that the related objects are an "or" relationship. In addition, it should be understood that in the description of this application, the words "first" and "second" are used only for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor as indicating Or imply order.

The EPC network architecture can realize the transfer of data flow between the terminal and the server. Generally, the EPC network architecture includes a serving gateway (SGW) and a packet data network (PDN) gateway (PDN). In the 3GPP protocol, the case where the gateway C / U is separated in the EPC network architecture is described, as shown in FIG. 1.

Figure 1 shows an EPC network architecture with gateway C / U separated. The gateway C / U separation refers to the division of a gateway into a control plane gateway and a user plane gateway according to functional division. As shown in Figure 1, the SGW is split into a user plane SGW gateway (server gateway for the user plane (SGW-U)) and a control plane SGW gateway (server gateway for the control plane (SGW-C)). Among them, the SGW-U can implement non- The user plane function of the SGW in the EPC network architecture with separated network element C / U, SGW-C can implement the control plane function of the SGW in the EPC network architecture with non-network element C / U separation. Similarly, PGW is split into a user plane PGW gateway (PDN gateway for PGW-U) and a control plane PDN gateway (PDN gateway for control plane (PGW-C)). Among them, PGW-U can realize non- The user plane function of the PGW in the EPC network architecture with separated network element C / U. The PGW-C can implement the control plane function of the PGW in the EPC network architecture with no network element C / U separation.

As shown in Figure 1, the EPC network architecture also includes a mobility management entity (MME) and a home subscriber server (HSS), where the MME is used to manage the movement of user equipment (UE) AM and session context. In addition, it also includes monitoring network elements related to monitoring functions such as charging gateway (CG), online charging system (OCS), and lawful interception gateway (LIG). PGW-C can These monitoring network elements are used to monitor terminal services, such as billing and legal monitoring of terminal services.

Based on the EPC network architecture shown in Figure 1, when the UE is activated, the PGW-C can assign the terminal device's IP address to the terminal device and the PGW-U corresponding to the terminal device's IP address, and the SGW-C can use the terminal's location information Assign the SGW-U that is closer to the UE to the terminal. When the terminal device accesses the data network, the source address information in the data stream sent to the base station (E-UTRN) in the universal mobile communication system terrestrial radio access network (UTRN) is assigned by PGW-C. IP address, the base station receives the data stream sent by the terminal device and sends the data stream to the SGW-U. The SGW-U receives the data stream of the terminal device sent by the base station, and sends the data stream to the PGW-U corresponding to the source address according to the source address in the data stream (that is, the IP address assigned by the PGW-C to the terminal device). The PGW-U receives the data stream sent by the SGW-U and sends the data stream to the data network.

In the process of the terminal device accessing the data network, PGW-U is the anchor point for the terminal device to access the data network, that is, when the terminal device accesses the data network, the data stream of the terminal device will be fixedly sent to the IP address of the terminal device. The corresponding PGW-U sends the data stream to the data network. For example, PGW-C assigns IP addresses IPa and PGW-U to the terminal. The source address in the data stream sent by the terminal device is IPa. No matter where the terminal device accesses the data network, the data stream will be sent to PGW-U A, PGW-U A sends the data stream of the terminal equipment to the data network. The PGW-U is used as an anchor point for the terminal equipment to access the data network, so that the terminal equipment can continuously access the data network.

However, because the data flow of the terminal equipment is fixedly sent to a specific PGW-U, and the PGW-U is often set in the central area of the core network, the terminal equipment often encounters traffic when it accesses the local server in the area Roundabout and other issues. In order to solve this problem, there are some technical solutions that can implement local breakout (LBO), so that the data flow of local services can be directly sent to the local server in the area where the terminal device is located, thereby solving the problem of traffic bypass. In order to prevent data flows from being directly sent by the SGW-U to the PGW-U, these solutions often split the data flows before the data flows reach the SGW-U. For example, a mobile edge computing gateway (mobile) is set up between the SGW-U and the base station. edge gateway (MEC, GW). The MEC GW receives the data stream of the terminal device from the base station, sends the data stream of the local service to the local server, and sends the data stream of the non-local service to the SGW-U. SGW-U does not Will receive the data flow of the local service, and will not send the data flow of the local service to the PGW-U, thereby solving the traffic bypass problem.

In practical applications, although the data flow can be divided before the data flow reaches the SGW-U, the problem of circuitous traffic can be solved. However, because the data flow of the local service will not be sent to the PGW-U through the SGW-U, therefore, the PGW -C will not be able to obtain relevant information for local service monitoring from the data stream of the local service from PGW-U, such as the type of local service corresponding to the data stream, the size of the data stream, the content of the data stream, etc., making PGW- C cannot monitor the local services of the terminal equipment.

In order to monitor the local services of the terminal equipment, an embodiment of the present application provides a data stream processing method. The technical solutions provided by the embodiments of the present application are described below with reference to the drawings.

FIG. 2 is a schematic diagram of a system architecture provided by an embodiment of the present application, and the system architecture is applicable to any method provided by the embodiment of the present application. As shown in FIG. 2, the system includes SGW-U, SGW-C, PGW-C, second PGW-U, and first PGW-U, and further includes MME, local server, etc. It should be understood that The display architecture is a simplified system architecture. In practical applications, the system architecture may also include other network elements, such as base stations, HSS, CG, OCS, LIG, etc. as shown in FIG. 1. The network architecture and service scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those of ordinary skill in the art know that with the network The evolution of the architecture and the emergence of new business scenarios. The technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

It should be understood that the second PGW-U in the embodiment of the present application may be an independent PGW-U gateway device or a device including PGW-U and other functions. For example, the second PGW-U in the embodiment of the present application U can also be SPGW-U including a PGW-U gateway and SGW-U. SPGW-U is a gateway that can implement both the PGW-U function and the SGW-U function. When the second PGW-U is the SPGW-U, the PGW-U function implemented by the SPGW-U is used, and therefore is also included in the embodiments of the present application.

The terminal device in the embodiment of the present application is a device with a wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on the water (such as a ship); it can also be deployed in the air (Such as on airplanes, balloons, and satellites). The terminal may be a mobile phone, a tablet, a computer with a wireless transmitting and receiving function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, or an industrial control. Wireless terminal in self-driving, wireless terminal in self-driving, wireless terminal in remote medical, wireless terminal in smart grid, wireless terminal in transportation safety, Wireless terminals in smart cities, wireless terminals in smart homes, and the like.

As an example, the interface between the base station and the SGW-U may be referred to as an S1-U interface, and the interface between the SGW-U and the first PGW-U may be referred to as an S5-U interface or an S8-U interface. The first PGW-U The interface between U and the data network can be called the SGi interface, the interface between PGW-C and the first PGW-U and the second PGW-U can be called the Sxb interface, and the interface between SGW-C and SGW-U It can be called Sxa, and the interface between SGW-C and PGW-C can be called S5-C interface or S8-C interface.

It can be understood that the foregoing functions may be network elements in a hardware device, software functions running on dedicated hardware, or virtualization functions instantiated on a platform (for example, a cloud platform). In the embodiments of the present application, the names of the network elements are not limited. As the technology evolves, each network element having the same or similar function may also specify another name. For example, in 5th generation (5G) communications, SGW-C and PGW-C can be implemented by session management function (SMF) network elements, and SGW-U and second PGW-U can be implemented by users Plane function (user plane function (UPF)) network element implementation.

In the embodiment of the present application, the SGW-U and the second PGW-U may belong to different network elements or may belong to the same network element. When they belong to the same network element, the specific name of the network element is not limited, for example, The network element may be an SPGW-U, that is, the functions of the SGW-U and the second PGW-U may be implemented by the SPGW-U. Next, the method provided in the embodiment of the present application is exemplarily described by using specific embodiments. It should be noted that the network element is a name of the device, and the name of the device is not limited thereto.

Example one

Based on the system architecture shown in FIG. 2, an embodiment of the present application provides a data stream processing method. FIG. 3 is a schematic flowchart of a data stream processing method according to an embodiment of the present application. As shown in FIG. 3, the method mainly includes the following steps:

S301: SGW-C obtains the location information of the terminal device.

The location information of the terminal device may be obtained by the SGW-C from a network element (such as an MME) having a positioning function in the EPC system architecture. In a possible implementation manner, when the terminal device is activated (for example, the terminal device is turned on or the airplane mode is turned off), it sends an activation request to the base station to obtain the address information allocated by the PGW-C. The activation request usually includes the user identification of the terminal device, such as the user's mobile phone number. The base station receives the activation request sent by the terminal device, and sends the activation request to the MME. The MME obtains the location information of the terminal device, and sends an activation request and the location information of the terminal device to the SGW-C.

S302: The SGW-C selects the SGW-U and the second PGW-U for the terminal device according to the location information of the terminal device.

In the embodiment of the present application, one SGW-C corresponds to at least one SGW-U, and the SGW-C is pre-configured with position information of at least one SGW-U corresponding to the SGW-C. When SGW-C corresponds to multiple SGW-Us, different SGW-Us can be located in the same or different communication areas. In the embodiment of the present application, the communication area may be a tracking area (TA), a tracking area list (TA list), or the like.

In addition, in the embodiment of the present application, a correspondence relationship between the SGW-U and the second PGW-U is pre-configured in the SGW-C, and the SGW-U and the second PGW-U that have the correspondence relationship can be located in the same communication. region.

In specific implementation, the SGW-U and the second PGW-U that have a corresponding relationship can be implemented by the same user plane gateway, that is, the user plane gateway including the SGW-U and the second PGW-U is used to implement the SGW-U in the embodiment of the present application. And the function of the second PGW-U.

After obtaining the location information of the terminal device, the SGW-C may select the location of the terminal device from the at least one SGW-U according to the location information of the terminal device and the location information of at least one SGW-U corresponding to the pre-configured SGW-C. The nearest SGW-U. After that, the SGW-C selects the second PGW-U for the terminal device based on the pre-configured correspondence between the SGW-U and the second PGW-U. For example, after SGW-C selects SGW-U for the terminal device based on the location information of the terminal device, it further selects the corresponding SGW-U for the terminal device based on the correspondence between SGW-U and the second PGW-U. PGW-U A.

S303: The SGW-C sends instruction information to the PGW-C.

In the embodiment of the present application, the indication information may include a user identifier of the terminal device, such as a user's mobile phone number, so that when PGW-C monitors the service of the terminal device, the user to which the terminal device belongs can be determined.

S304: The PGW-C receives the instruction information sent by the SGW-C, and allocates the second address information to the terminal device according to the instruction information.

There is a correspondence relationship between PGW-C and at least one first PGW-U, and address information of at least one corresponding first PGW-U is configured in advance. After receiving the indication information, the PGW-C may also select a first PGW-U for the terminal according to the load of at least one PGW-U, and the first PGW-U may be used as an anchor point for the terminal device to access the data network.

In the embodiment of the present application, the PGW-C may allocate at least two network address information to the terminal device: first address information and second address information. Specifically, the first address information is address information allocated by the PGW-C to the terminal device for accessing the data network. The second address information is address information allocated by the terminal device for accessing a local database. Specifically, the first address information and the second address information may be an IPv4 address, an IPv6 address, an IPv4v6 address, and the like.

In specific implementation, SGW-C and PGW-C may be implemented by the same control plane gateway, that is, the functions of SGW-C and PGW-C in the embodiment of the present application are implemented by a control plane gateway including SGW-C and PGW-C.

S305: The PGW-C sends the second address information to the SGW-C.

In the embodiment of the present application, in order to realize the offload of the data flow of the local service by the SGW-U, the second address information may be sent to the SGW-U. Since there is no interface between the PGW-C and the SGW-U, the PGW-C may send the second address information to the SGW-C first, and the SGW-C sends the second address information to the SGW-U. In a possible implementation manner, the PGW-C may also send the first address information to the SGW-C.

S306: The SGW-C receives the second address information sent by the PGW-C, and sends the second address information to the SGW-U.

In a possible implementation manner, the SGW-C may further receive the first address information sent by the PGW-C, and send the first address information to the terminal device through the MME and the base station. Furthermore, the SGW-C may also send the first address information to the SGW-U.

S307: The SGW-U receives the second address information sent by the terminal, and receives the data stream of the terminal device.

After receiving the address information assigned by PGW-C, the terminal equipment completes the activation. In the embodiment of the present application, after receiving the first address information, the terminal device may send the data stream to the base station by using the first address information as the source address information. The base station receives the data stream sent by the terminal equipment and forwards it to the SGW-U.

S308: The SGW-U executes S309 when the data flow of the terminal device is the data flow of the local service. In a possible implementation manner, the SGW-U executes S312 when the data flow of the terminal device is not the data flow of the local service.

In the embodiment of the present application, the SGW-U may determine whether the data flow of the terminal device is a data flow of a local service according to a preset traffic distribution rule. For example, the destination address information in the data flow of the terminal device is the address information of the local server. It is determined that the data stream is a data stream of a local service. In the specific implementation process, the shunting rules can be pre-configured in the SGW-U or pre-configured in the SGW-C, and the SGW-C sends it to the SGW-U during the terminal activation process. No more restrictions.

S309: The SGW-U updates the source address information of the data stream to the second address information.

In a possible implementation manner, the source address information of the data stream is the first address information allocated by the PGW-C to the terminal device. The SGW-U updates the source address information in the data flow of the local service to the second address information according to the second address information sent by the SGW-C.

S310: The SGW-U sends the updated data stream to the second PGW-U.

S311: The second PGW-U receives the updated data stream sent by the SGW-U, and sends the data stream to the local server.

In the embodiment of the present application, the local server may be relative to the SGW-U, that is, the local server and the SGW-U are in the same communication area. In specific implementation, the local server can be either a single server or a server cluster composed of multiple servers, such as a local area network.

During specific implementation, the second PGW-U may also obtain relevant information for service monitoring in the data stream and send it to the PGW-C, thereby realizing the monitoring of local services of the terminal device. In specific implementation, the second PGW-U may send monitoring information to the PGW-C through the Sxb interface between the second PGW-U and the PGW-C. In addition, PGW-C can also provide the address information of the LIG to the second PGW-U, and provide the address information of the second PGW-U to the LIG, so that the X3-U interface is established between the second PGW-U and the LIG. The second PGW-U can directly send the monitoring information for legal interception to the LIG through the X3-U interface.

S312: The SGW-U sends the data stream to the first PGW-U.

S313: The first PGW-U receives the data stream sent by the SGW-U, and sends the data stream to the data network.

In specific implementation, the first PGW-U can also obtain relevant information for service monitoring in the data stream and send it to PGW-C, so as to realize the monitoring of the services of the terminal device.

In S309 in the embodiment of the present application, the SGW-U updates the source address information of the data stream of the local service to the second address information, and the second PGW-U sends the updated data stream to the local server, so that the second PGW -U can be used as the anchor point for accessing the local server corresponding to the second address information, that is, the terminal device is allocated a PDN connection dedicated to transmitting the data stream of the local service, which solves the problem when the terminal device sends the data stream to the local server. The resulting traffic detours. At the same time, the PGW-U itself has the function of obtaining related information for service monitoring in the data stream. In the embodiment of the present application, the second PGW-U is used to send the data stream to the local server, which can reduce the circuitous traffic while achieving local business Monitoring.

In the EPC architecture, SGW-U and PGW-U are transmitted through a tunnel. Based on this, in a possible implementation manner, after the SGW-C selects the SGW-U and the second PGW-U for the terminal device, the SGW-U address information and the second PGW-U address information Send to PGW-C.

In S304, the PGW-C will also allocate the first tunnel information and the second tunnel information to the terminal device. The second tunnel information may include address information of the SGW-U and / or address information of the second PGW-U. Specifically, the address information of the SGW-U and the second PGW-U is sent by the SGW-C to the PGW-C. The second tunnel information sent by the PGW-C to the second PGW-U may include address information of the SGW-U, and the second tunnel information sent by the PGW-C to the SGW-U may include address information of the second PGW-U.

The PGW-C sends the second tunnel information to the SGW-C and the second PGW-U. The SGW-C receives the second tunnel information sent by the PGW-C and sends the second tunnel information to the SGW-U, the SGW-U, and the first The two PGW-Us establish a tunnel between the SGW-U and the second PGW-U according to the second tunnel information.

Specifically, the second tunnel information may further include a tunnel identifier on the second PGW-U side, and the tunnel identifier corresponds to the second address information of the terminal device. In a possible implementation manner, the PGW-C may allocate the tunnel identifier to the terminal device after receiving the instruction information. In another possible implementation manner, the PGW-C may send the second address information allocated to the terminal device to the second PGW-U, and after receiving the second address information, the second PGW-U is the second address. Information is assigned to the corresponding tunnel identifier, and the tunnel identifier is sent to PGW-C.

The SGW-U and the second PGW-U can establish an uplink tunnel between the SGW-U and the second PGW-U through the second tunnel information, and the uplink tunnel is used by the SGW-U to send the updated terminal to the second PGW-U The data flow of the device.

Furthermore, the second tunnel information may further include an SGW-U side tunnel identifier allocated by the SGW-C to the terminal device. The SGW-U and the second PGW-U may also establish a downlink tunnel between the SGW-U and the second PGW-U through the second tunnel information, and the downlink tunnel is used by the second PGW-U to send a local server to the SGW-U to The data stream sent by the terminal device.

When the data flow of the terminal device is a data flow of the local service, the SGW-U updates the source address information of the data flow to the second address information and updates the updated address through the uplink tunnel with the second PGW-U. The data stream is sent to the second PGW-U. Specifically, the SGW-U may encapsulate the updated data stream according to the tunnel identifier on the second PGW-U side and the address information of the second PGW-U, so as to pass the updated data stream to the second PGW-U. The tunnel is sent to the second PGW-U. The second PGW-U receives the data stream sent by the SGW-U through the tunnel with the SGW-U, and determines the second address information corresponding to the tunnel identifier according to the second PGW-U-side tunnel identifier that encapsulates the data stream, so that it can be based on The second address information determines context information corresponding to the second address information, and acquires related information used for service monitoring in the data stream. At the same time, the second PGW-U can also decapsulate the data stream received from the SGW-U, obtain the updated data stream of the SGW-U, and send the updated data stream to the local server.

Similarly, the first tunnel information allocated by the PGW-C to the terminal device may include address information of the SGW-U and / or address information of the first PGW-U. Specifically, the first tunnel information sent by the PGW-C to the first PGW-U may include the address information of the SGW-U, and the first tunnel information sent by the PGW-C to the SGW-U may include the first PGW-U Address information.

The PGW-C sends the first tunnel information to the SGW-C and the first PGW-U. The SGW-C receives the first tunnel information sent by the PGW-C and sends the first tunnel information to the SGW-U, the SGW-U, and the first A PGW-U establishes a tunnel between the SGW-U and the first PGW-U according to the first tunnel information.

Specifically, the first tunnel information may further include a tunnel identifier on the first PGW-U side, and the tunnel identifier corresponds to the first address information of the terminal device. In a possible implementation manner, the PGW-C may allocate the tunnel identifier to the terminal device after receiving the instruction information. In another possible implementation manner, the PGW-C may send the first address information allocated to the terminal device to the first PGW-U, and after receiving the first address information, the first PGW-U is the first address. Information is assigned to the corresponding tunnel identifier, and the tunnel identifier is sent to PGW-C.

The SGW-U and the first PGW-U can establish an uplink tunnel between the SGW-U and the first PGW-U through the first tunnel information, and the uplink tunnel is used by the SGW-U to send data of the terminal device to the first PGW-U flow.

Furthermore, the first tunnel information may further include an SGW-U side tunnel identifier allocated by the SGW-C to the terminal device. The SGW-U and the first PGW-U may also establish a downlink tunnel between the SGW-U and the first PGW-U through the first tunnel information, and the downlink tunnel is used for the first PGW-U to send data to the SGW-U. The data stream sent by the terminal device.

When the data flow of the terminal device is not the data flow of the local service, the SGW-U sends the data flow of the terminal device to the first PGW-U through the tunnel between the SGW-U and the first PGW-U. Specifically, the SGW-U may encapsulate the data flow of the terminal device according to the tunnel identifier of the first PGW-U side and the address information of the first PGW-U, thereby passing the data flow of the terminal device to the first PGW-U. The uplink tunnel is sent to the first PGW-U. The first PGW-U receives the data stream sent by the SGW-U through the tunnel with the SGW-U, and determines the first address information corresponding to the tunnel identifier according to the first PGW-U-side tunnel identifier of the encapsulated data stream, so that The first address information determines context information corresponding to the first address information, and acquires information related to service monitoring in a data stream of the terminal device. At the same time, the first PGW-U can also decapsulate the data stream received from the SGW-U, obtain the data stream of the terminal device, and send the data stream of the terminal device to the data network.

In a possible implementation of S304, the PGW-C will also send the first address information allocated to the terminal device to the first PGW-U, and the second address information allocated to the terminal device to the second PGW- U. After receiving the data stream of the terminal device sent by the SGW-U, the first PGW-U verifies whether the source address information in the data stream of the terminal device is the first address information, and if so, sends the data stream to the data network, if not , The data stream is rejected. Similarly, after receiving the data stream of the terminal device sent by the SGW-U, the second PGW-U verifies whether the source address information in the data stream of the terminal device is the second address information, and if so, sends the data stream to the local server If not, the data stream is rejected. With the above technical solution, the source address information of the data stream is further verified by the first PGW-U and the second PGW-U to enhance the security of the data stream transmission.

Based on the same technical concept, when the local server sends a data stream to the terminal device, the second PGW-U receives the data stream sent by the local server and sends the data stream to the SGW-U. Because the source address information of the data stream of the terminal device received by the local server is the second address information, the destination address information of the data stream sent by the local server to the terminal device may be the second address information. The SGW-U receives the data stream sent by the second PGW-U, updates the destination address information in the data stream to the first address information, and sends the updated data stream to the base station. The base station receives the data stream sent by the SGW-U, and sends the data stream to the terminal device according to the destination address information.

Specifically, the SGW-U can receive the data stream sent by the local server to the terminal device through the downlink tunnel with the second PGW-U, and receive the data network and send the data stream to the terminal through the downlink tunnel with the first PGW-U. The data flow of the device.

Example two

The embodiment of the present application also provides another EPC system architecture. FIG. 4 is a schematic diagram of another EPC system architecture provided by an embodiment of the present application. As shown in FIG. 4, the system includes a first SGW-U, a second SGW-U, a SGW-C, a PGW-C, and a second PGW- U and the first PGW-U, further including an MME, a local server, and the like.

Based on the system architecture shown in FIG. 4, an embodiment of the present application provides a data stream processing method. This method is similar to the method shown in FIG. 3. The first SGW-U in FIG. 4 may be equivalent to the SGW-U in FIG. 3, and the differences are:

In S302, the SGW-C selects a first SGW-U, a second SGW-U, and a second PGW-U for the terminal device.

The first SGW-U, the second SGW-U, and the second PGW-U satisfy a corresponding relationship. In a possible implementation manner, the first SGW-U, the second SGW-U, and the second PGW-U U is in the same communication area.

In S310, the first SGW-U sends the updated data stream to the second SGW-U. The second SGW-U receives the data stream sent by the first SGW-U, and sends the data stream to the second PGW-U.

In the 3GPP protocol, it is specified that the address information of a terminal device can be associated with a PDN connection. In the first embodiment and the second embodiment, the source address information in the local data stream is updated to the second address information, so that the method provided in the embodiment of the present application can comply with the provisions of the existing 3GPP protocol, that is, the first address information. It is associated with the PDN connection where the first PGW-U is located, and the second address information is associated with the PDN connection where the second PGW-U is located.

Example three

In a possible implementation manner, the PGW-C may only assign the first address information to the terminal device. After receiving the local data stream, the SGW-U may not update the source address information in the data stream to the second address information. Address information. E.g:

Based on the system architecture shown in FIG. 2, SGW-C can execute S301 to S303, which will not be described in detail.

After receiving the instruction information, PGW-C can perform the following steps:

Step 1: Determine the first PGW-U for the terminal device and establish a connection with the first PGW-U.

Step 2: Assign the first address information to the terminal device, and send the first address information to the SGW-C.

After receiving the first address information, the SGW-C sends the first address information to the terminal device, so that the terminal device can send the data stream using the first address information as the source address information.

After that, SGW-U can execute S307 and S308. In S308, if the SGW-U determines that the data stream sent by the terminal device is a local data stream, it sends the data stream to the second PGW-U; if the SGW-U determines that the data stream sent by the terminal device is not a local data stream, it sends The data stream is sent to the first PGW-U.

In the system architecture shown in FIG. 4, after receiving the instruction information, the PGW-C may also assign the first address information to the terminal device, and the first SGW-U may also determine that the data stream sent by the terminal device is a local data stream. At this time, the source address information in the data stream is not updated, and the data stream is sent to the local server, which will not be described in detail.

Embodiment 4

In the embodiment of the present application, the second PGW-U and the SGW-U may belong to the same network element, that is, the second PGW-U and the SGW-U are combined. In the case that SGW-U and the second PGW-U belong to the same network element, the internal data stream transmission between the SGW-U and the second PGW-U can be realized, so it is beneficial to improve the transmission of local data streams as a whole speed. Moreover, the SGW-U and the second PGW-U belong to the same network element can also simplify the system architecture, save signaling overhead, and so on.

Based on this, the embodiment of the present application further provides a communication method. The SGW-C and / or PGW-C can determine the SGW-U and the second PGW-U for the terminal device, so that the determined SGW-U and the second PGW-U can be determined. U belongs to the same network element, and any one of the methods provided in the first to fifth embodiments may be implemented based on the determined SGW-U and the second PGW-U.

In a possible implementation manner, the SGW-C and / or PGW-C determines the SGW-U and the second PGW-U for the terminal device, mainly including the following three implementation manners:

Implementation method one

SGW-C determines the SGW-U and the second PGW-U for the terminal equipment, which mainly includes the following steps:

Step 1.1: SGW-C determines SGW-U for the terminal device. For specific implementation manners, reference may be made to the foregoing embodiments and the prior art, and details are not described herein again. Because SGW-U and the second PGW-U belong to the same network element, when SGW-C determines the SGW-U for the terminal device, it also determines the second PGW-U for the terminal device.

Step 1.2: The SGW-C establishes a connection with the SGW-U, and sends third instruction information to the PGW-C. The third instruction information may instruct the PGW-C to establish a connection with the second PGW-U.

Step 1.3: The PGW-C establishes a connection with the second PGW-U according to the third instruction information.

In a possible implementation manner, the third indication information may include identification information of the second PGW-U. The identification information of the second PGW-U may be the interface address of the Sxb interface of the second PGW-U. In step 1.3, the PGW-C may be established with the PGW-C according to the interface address of the Sxb interface of the second PGW-U. connection.

In addition, the identification information of the second PGW-U may also be an interface identification of an Sxb interface of the second PGW-U. In a possible implementation manner, the interface identifier may be used as a domain name of the Sxb interface. In step 1.3, the PGW-C may send a query request to a domain name system (DNS) device. The DNS device queries the interface address corresponding to the interface identifier according to the query request, and returns the queried interface address to the PGW-C. The PGW-C may further establish a connection with the Sxb interface of the second PGW-U according to the received interface address. In another possible implementation manner, the correspondence between the interface identifier of the Sxb interface and the interface address may also be pre-configured in the PGW-C, and the PGW-C may obtain the interface identifier according to the interface identifier of the received Sxb interface. The corresponding interface address is further used to establish a connection with the Sxb interface of the second PGW-U according to the interface address.

In another possible implementation manner, the third indication information may also include identification information of a network element to which the SGW-U and the second PGW-U belong. In step 1.3, the PGW-C may also use the identification information of the network element as the domain name, and obtain the interface address of the Sxb interface of the second PGW-U in the network element corresponding to the network element identification through the DNS device. The PGW-C may also store the correspondence between the network element identifier and the interface address of the Sxb interface in advance. Between the network element identifier that has the correspondence relationship and the interface address of the Sxb interface, the network element corresponding to the network element identifier includes the The second PGW-U to which the Sxb interface belongs. Based on this, the PGW-C can obtain the interface address of the Sxb interface in the network element corresponding to the network element according to the network element identifier, and then establish an Sxb connection with the network element, that is, the Sxb with the second PGW-U in the network element The interface establishes a connection.

Implementation method two

The SGW-C and PGW-C determine the SGW-U and the second PGW-U for the terminal device, mainly including the following steps:

Step 2.1: The SGW-C determines the SGW-U for the terminal device. For a specific implementation manner, refer to the foregoing embodiment, and details are not described herein again.

Step 2.2: The SGW-C sends fourth instruction information to the PGW-C, and the fourth instruction information is used to instruct the PGW-C to determine the second PGW-U for the terminal device.

Step 2.3: The PGW-C determines a second PGW-U for the terminal device according to the fourth instruction information.

Step 2.4: SGW-C establishes a connection with SGW-U, and PGW-C establishes a connection with PGW-U.

In a possible implementation manner, the fourth indication information may include identification information of the SGW-U. Specifically, as one of the processing methods: SGW-C stores information of one or more preset SGW-Us, and SGW-U can be determined as a terminal device from the one or more preset SGW-Us. Provide services. Similarly, the PGW-C can also store information of one or more preset PGW-Us, and the second PGW-U and the first PGW-U can be determined from the one or more preset PGW-Us. U provides a server for terminal equipment.

The preset PGW-U information in the PGW-C includes a correspondence relationship, which is used to indicate a correspondence relationship between one or more preset SGW-Us and one or more preset PGW-Us. A preset PGW-U corresponding to any one of the preset SGW-Us belongs to the same network element as the preset SGW-U. For example, the correspondence can be shown in Table 1 below:

Table I

SGW-U identification information	Identification information of PGW-U
Identification A	a
Identification B	b
Identification C	c
Identification D	d

As shown in Table 1, ID A corresponds to ID a. Assuming ID A is the identification information of SGW-U1 and ID a is the identification information of PGW-U1, it is PGW-U1 that belongs to the same network element as SGW-U1. . The other identification information is the same and will not be repeated.

In the first possible implementation manner of step 2.3, the PGW-C may determine the preset correspondence relationship according to the identification information of the SGW-U, and the SGW-U corresponding to the identification information belongs to the PGW-U of the same network element. For the second PGW-U. For example, if the identification information is the identification A, the PGW-C may determine the identification information of the PGW-U corresponding to the identification A as the identification a based on the corresponding relationship shown in Table 1. The identifier a is identification information of the PGW-U1, so the PGW-C can determine the PGW-U1 as the second PGW-U that provides services to the terminal device.

In another possible implementation manner, the fourth indication information may also include location information of the terminal device. Specifically, the preset PGW-U information in the PGW-C may further include one or more preset PGW-Us and their corresponding service areas, for example, as shown in Table 2 below:

Table II

Preset PGW-U	Service Area
PGW-U1	Zone 1
PGW-U2	Zone 2
PGW-U3	Zone 3

PGW-U4

Zone 4

As shown in Table 2, the PGW-C is associated with four preset PGW-Us: PGW-U1, PGW-U2, PGW-U3, and PGW-U4. Among them, the service area of PGW-U1 is area 1, that is, PGW-U1 can provide data stream transmission services for the terminal devices in area 1. Other preset PGW-Us do the same, and will not be described again. It can be understood that each preset PGW-U in Table 2 can be expressed in the form of identification information of PGW-U, such as the identifiers a to d in Table 1, and details are not described herein again.

In a second possible implementation manner of step 2.3, the PGW-C may determine the target service area to which the location information belongs according to the location information of the terminal device. Further, a PGW-U corresponding to the target service area may be determined from one or more preset PGW-Us as the second PGW-U. For example, if the PGW-C determines that the location information of the terminal device is located in the area 1 in Table 1, it can determine the PGW-U1 corresponding to the area 1 as the second PGW-U.

In this implementation, although SGW-C and PGW-C determine the SGW-U and the second PGW-U for the terminal device, respectively, SGW-C and PGW-C are determined based on the location information of the terminal device, so The selected SGW-U and the second PGW-U may have relatively close service areas. In the scenario where the SGW-U and the second PGW-U are combined, the SGW-C and the PGW-C will determine that the same network element (that is, the network element where the SGW-U and the second PGW-U are located) provides services for the terminal device.

Implementation method three

The PGW-C determines the SGW-U and the second PGW-U for the terminal device, mainly including the following steps:

Step 3.1: The SGW-C sends fifth indication information to the PGW-C.

Step 3.2: The PGW-C determines the SGW-U and the second PGW-U for the terminal device according to the fifth instruction information.

Step 3.3: The PGW-C establishes a connection with the second PGW-U, and sends sixth indication information to the SGW-C.

Step 3.4: SGW-C establishes a connection with SGW-U according to the sixth instruction information.

The fifth indication information may include location information of the terminal device. The preset PGW-U information in the PGW-C may include one or more preset PGW-Us and their corresponding service areas as shown in Table 2. In step 3.2, the PGW-C may use the second possible implementation manner as in step 2.3 above to determine the second PGW-U for the terminal device, and details are not described herein again. Since the second PGW-U and the SGW-U belong to the same network element, when the PGW-C determines the second PGW-U for the terminal device, it also determines the SGW-U for the terminal device.

The sixth indication information may include identification information of the SGW-U. The identification information of the SGW-U may be an interface address of an Sxa interface of the SGW-U, or may be an interface identification of an Sxa interface of the SGW-U. In addition, the sixth indication information may also include identification information of a network element to which the second PGW-U belongs. The specific implementation manner of step 3.4 may be similar to step 1.3 in implementation manner 1, and details are not described herein again.

Based on the system architecture shown in FIG. 2, the method for determining the SGW-U and the second PGW-U has been exemplarily described through three specific implementation manners. It can be understood that, for the system architecture shown in FIG. 4, the above three specific implementation manners are still applicable to the determination of the second SGW-U and the second PGW-U in FIG. 4, and details are not described herein again.

Based on the same technical concept, an embodiment of the present invention further provides a device. FIG. 5 shows a possible exemplary block diagram of the device involved in the embodiment of the present application. The device 500 may exist in the form of software. The apparatus 500 may include a processing unit 502 and a communication unit 503. The processing unit 502 is configured to control and manage the operations of the device 500. The communication unit 503 is configured to support communication between the device 500 and other network entities. The device 500 may further include a storage unit 501 for storing program code and data of the device 500.

The processing unit 502 may be a processor or a controller. For example, the processing unit 502 may be a general-purpose central processing unit (CPU), a general-purpose processor, digital signal processing (DSP), or an application-specific integrated circuit. circuits, ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the present disclosure. The processor may also be a combination that realizes a computing function, for example, includes a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication unit 503 may be a communication interface, a transceiver, or a transceiver circuit. The communication interface is collectively referred to. In a specific implementation, the communication interface may include multiple interfaces. The storage unit 501 may be a memory.

The device 500 may be one or more of SGW-C, PGW-C, SGW-U, and the second PGW-U, or may be capable of implementing SGW-C, PGW-C, SGW-U, and the second PGW- One or more functions of a system-on-chip or chip in U.

Specifically, when the device 500 is an SGW-C or an on-chip system or chip capable of realizing the functions of the SGW-C, the processing unit 502 can support the device 500 to perform the actions of the SGW-C in the method examples above, and the communication unit 503 can support the device Communication between 500 and PGW-C, SGW-U (first SGW-U and second SGW-U); for example, the processing unit 502 and / or the communication unit 503 are used to support the device 500 to perform S301 to S303 in FIG. 3 , And S306.

When the device 500 is a PGW-C or an on-chip system or chip capable of realizing the functions of the PGW-C, the processing unit 502 can support the device 500 to perform the actions of the PGW-C in the method examples above, and the communication unit 503 can support the device 500 and SGW -C, communication between the first PGW-U and the second PGW-U; for example, the processing unit 502 and / or the communication unit 503 are used to support the device 500 to perform S304 and S305 in FIG. 3.

When the device 500 is an SGW-U or an on-chip system or chip capable of implementing the SGW-U function, the processing unit 502 can support the device 500 to perform the SGW-U actions in the method examples above, and the communication unit 503 can support the device 500 and SGW- C. Communication between the first PGW-U and the second PGW-U; for example, the processing unit 502 and / or the communication unit 503 are used to support the device 500 to perform S307 to S310 and S312 in FIG. 3.

When the device 500 is a second PGW-U or a system-on-chip or chip capable of implementing the functions of the second PGW-U, the processing unit 502 may support the device 500 to perform the actions of the second PGW-U in the method examples above, and the communication unit 503 The communication between the device 500 and the SGW-U, the local server, and the PGW-C may be supported; for example, the processing unit 502 and / or the communication unit 503 are used to support the device 500 to execute S311 in FIG. 3.

Referring to FIG. 6, which is a schematic diagram of a device according to an embodiment of the present application. The device may be one or more of the SGW-C, PGW-C, SGW-U, and the second PGW-U in the foregoing embodiment. . The device 600 includes: a processor 602, a transceiver 603, and a memory 601. Optionally, the device 600 may further include a bus 604. Among them, the transceiver 603, the processor 602, and the memory 601 can be connected to each other through a communication line 604; the communication line 604 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (extended industry standard architecture) , Referred to as EISA) bus and so on. The communication line 604 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only a thick line is used in FIG. 6, but it does not mean that there is only one bus or one type of bus.

In the device of FIG. 5 and FIG. 6 of the present application, various components are communicatively connected, that is, the processing unit (or processor), the storage unit (or memory) and the communication unit (transceiver) communicate with each other through an internal connection path to transfer control And / or data signals. The foregoing method embodiments of the present application may be applied to a processor, or the steps of the foregoing method embodiments may be implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method embodiment may be completed by using an integrated logic circuit of hardware in a processor or an instruction in a form of software. The above processor may be a central processing unit (CPU), a network processor (NP) or a combination of CPU and NP, a digital signal processor (DSP), and an application specific integrated circuit (application) specific integrated circuit (ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The various methods, steps, and logic block diagrams disclosed in this application can be implemented or implemented. A general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps combined with the method disclosed in this application can be directly embodied as being executed by a hardware decoding processor, or executed and completed by using a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the foregoing method in combination with its hardware. Although only one processor is shown in the figure, the apparatus may include multiple processors or the processor may include multiple processing units. Specifically, the processor may be a single-core (single-CPU) processor, or may be a multi-core (multi-CPU) processor.

The memory is used to store computer instructions executed by the processor. The memory may be a memory circuit or a memory. The memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrical memory Erase programmable read-only memory (EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. The memory may be independent of the processor or a storage unit in the processor, which is not limited herein. Although only one memory is shown in the figure, the device may also include multiple memories or the memory includes multiple storage units.

The transceiver is used to implement the content interaction between the processor and other units or network elements. Specifically, the transceiver may be a communication interface of the device, a transceiver circuit or a communication unit, or a transceiver. The transceiver may also be a communication interface or a transceiver circuit of the processor. Optionally, the transceiver may be a transceiver chip. The transceiver may further include a transmitting unit and / or a receiving unit. In a possible implementation manner, the transceiver may include at least one communication interface. In another possible implementation manner, the transceiver may also be a unit implemented in software. In various embodiments of the present application, the processor may interact with other units or network elements through a transceiver. For example, the processor obtains or receives content from other network elements through the transceiver. If the processor and the transceiver are two physically separated components, the processor may interact with the other units of the device without going through the transceiver.

In a possible implementation manner, the processor, the memory, and the transceiver may be connected to each other through a bus. The bus may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like.

For ease of representation, only a thick line is used in FIG. 6, but it does not mean that there is only one bus or one type of bus.

In the embodiments of the present application, words such as “exemplary” or “for example” are used as examples, illustrations or illustrations. Any embodiment or design described as “exemplary” or “for example” in the embodiments of the present application should not be construed as more preferred or more advantageous than other embodiments or designs. Rather, the use of the words "exemplary" or "for example" is intended to present the relevant concept in a concrete manner.

In the embodiments of the present application, for ease of understanding, various examples have been described. However, these examples are just some examples, and are not meant to be the best way to implement this application.

In the embodiments of the present application, for convenience of description, names of request messages, response messages, and other various messages are used. However, these messages are merely examples of the content or functions to be carried, and the specific names of the messages do not limit the application, for example, they may be the first message, the second message, the third message, and so on. These messages can be specific messages or certain fields in the message. These messages can also represent various service-oriented operations.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server, or data center Transmission by wire (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) to another website site, computer, server, or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, and the like including one or more available medium integration. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (Solid State Disk)).

Various illustrative logic units and circuits described in the embodiments of the present application may be implemented by a general-purpose processor, a digital signal processor, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices. Discrete gate or transistor logic, discrete hardware components, or any combination of the above are designed to implement or operate the described functions. The general-purpose processor may be a microprocessor. Alternatively, the general-purpose processor may also be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration. achieve.

The steps of the method or algorithm described in the embodiments of the present application may be directly embedded in hardware, a software unit executed by a processor, or a combination of the two. A software unit may be stored in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium in the art. For example, the storage medium may be connected to the processor, so that the processor can read information from the storage medium and can write information to the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may be provided in an ASIC, and the ASIC may be provided in a terminal device. Alternatively, the processor and the storage medium may also be provided in different components in the terminal device.

These computer program instructions can also be loaded on a computer or other programmable data processing device, so that a series of steps can be performed on the computer or other programmable device to produce a computer-implemented process, which can be executed on the computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

Although the present application has been described with reference to specific features and embodiments thereof, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the application as defined by the appended claims, and are deemed to have covered any and all modifications, changes, combinations, or equivalents that fall within the scope of the application. Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims (30)

1. A data stream processing method, comprising:

   The user plane service gateway SGW-U receives the second address information of the terminal device sent by the control plane service gateway SGW-C;

   After the SGW-U receives the data stream of the terminal device, if it is determined that the data stream is a data stream of a local service, it updates source address information of the data stream to the second address information, and The updated data stream is sent to the second user plane PDN gateway PGW-U;

   The second PGW-U receives a data stream sent by the SGW-U, and sends the data stream to a local server.
2. The method according to claim 1, wherein before the SGW-U sends the updated data stream to the second PGW-U, further comprising:

   Receiving, by the SGW-U, second tunnel information sent by the SGW-C;

   Receiving, by the second PGW-U, the second tunnel information sent by the PGW-C;

   Establishing, by the SGW-U and the second PGW-U, a tunnel between the SGW-U and the second PGW-U according to the second tunnel information;

   The SGW-U sending the updated data stream to the second PGW-U includes:

   The SGW-U sends the updated data stream to the second PGW-U through a tunnel between the SGW-U and the second PGW-U.
3. The method according to claim 1 or 2, further comprising:

   If the SGW-U determines that the data stream is a non-local service data stream, sending the data stream to the first PGW-U;

   The first PGW-U receives a data stream sent by the SGW-U, and sends the data stream to a data network.
4. A data stream processing method, comprising:

   The control plane service gateway SGW-C obtains the location information of the terminal device;

   Selecting, by the SGW-C, a user plane service gateway SGW-U and a second user plane PDN gateway PGW-U for the terminal device according to the location information of the terminal device;

   The SGW-C sends instruction information to a control plane PDN gateway PGW-C, where the instruction information is used to instruct the SGW-C to select the second PGW-U for the terminal device;

   Receiving, by the PGW-C, the instruction information and assigning second address information to the terminal device according to the instruction information;

   The PGW-C sends the second address information to the SGW-C;

   The SGW-C receives the second address information, and sends the second address information to the SGW-U.
5. The method according to claim 4, further comprising:

   The PGW-C sends second tunnel information to the SGW-C and the second PGW-U, and the second tunnel information is used to establish a connection between the SGW-U and the second PGW-U. tunnel;

   The SGW-C receives the second tunnel information sent by the PGW-C, and sends the second tunnel information to the SGW-U.
6. The method according to claim 4 or 5, further comprising:

   Sending, by the PGW-C, first address information of the terminal device to the SGW-C;

   The SGW-C receives the first address information, and sends the first address information to the terminal device.
7. A data stream processing method, comprising:

   After receiving the data stream from the terminal device, the user plane service gateway SGW-U sends the data stream to the second user plane PDN gateway PGW-U if it is determined that the data stream is a data stream of local services;

   The second PGW-U receives a data stream sent by the SGW-U, and sends the data stream to a local server.
8. The method according to claim 7, wherein before the SGW-U sends the data stream to the second user plane PDN gateway PGW-U, further comprising:

   Receiving, by the SGW-U, the second address information of the terminal device sent by the control plane serving gateway SGW-C;

   The SGW-U updates source address information in the data stream to the second address information.
9. The method according to claim 7 or 8, further comprising:

   If the SGW-U determines that the data stream is a non-local service data stream, sending the data stream to the first PGW-U;

   The first PGW-U receives a data stream sent by the SGW-U, and sends the data stream to a data network.
10. A data stream processing method, comprising:

    SGW-C and / or PGW-C determine SGW-U and second PGW-U for the terminal device;

    The SGW-C establishes a connection with the SGW-U, and the PGW-C establishes a connection with the second PGW-U.
11. The method according to claim 10, wherein the SGW-C determining an SGW-U and a second PGW-U for the terminal device comprises:

    Determining, by the SGW-C, the SGW-U and the second PGW-U for the terminal device, wherein the second PGW-U and the SGW-U belong to the same network element;

    The SGW-C sends third instruction information to the PGW-C, where the third instruction information is used to instruct the PGW-C to establish a connection with the second PGW-U.
12. The method according to claim 11, wherein the third indication information comprises identification information of the second PGW-U, and / or identification information of the network element.
13. The method according to claim 10, wherein the SGW-C and PGW-C determine the SGW-U and the second PGW-U for the terminal device, comprising:

    Determining, by the SGW-C, the SGW-U for the terminal device, and sending fourth instruction information to the PGW-C, where the fourth instruction information is used to instruct the PGW-C to determine for the terminal device The second PGW-U;

    Determining, by the PGW-C, the second PGW-U for the terminal device according to the fourth instruction information.
14. The method according to claim 13, wherein the fourth indication information includes identification information of the SGW-U;

    Determining, by the PGW-C according to the fourth instruction information, the second PGW-U for the terminal device includes:

    The PGW-C determines, as the second PGW-U, a PGW-U belonging to the same network element as the SGW-U according to the identification information of the SGW-U.
15. The method according to claim 14, wherein the PGW-C determines, according to the identification information of the SGW-U, a PGW-U belonging to the same network element as the SGW-U as the second PGW- U, including:

    The PGW-C obtains a preset correspondence relationship; the correspondence relationship is used to indicate one or more preset PGW-Us respectively corresponding to the SGW-U, and any one of the preset SGW-Us corresponds to the PGW-U Belong to the same network element as the preset SGW-U;

    The PGW-C determines, according to the identification information, that in the preset correspondence relationship, the SGW-U corresponding to the identification information belongs to the same PGW-U of the same network element as the second PGW-U.
16. The method according to claim 13, wherein the fourth indication information includes location information of the terminal device;

    Determining, by the PGW-C according to the fourth instruction information, the second PGW-U for the terminal device includes:

    The PGW-C determines, as the second PGW-U, a PGW-U that provides services to a location corresponding to the location information according to the location information.
17. The method according to claim 16, wherein the PGW-C determines, as the second PGW-U, a PGW-U that provides services for a location corresponding to the location information according to the location information, comprising:

    Obtaining, by the PGW-C, service areas corresponding to one or more preset PGW-Us respectively;

    Determining, by the PGW-C, a target service area to which the location information belongs, and determining a PGW-U corresponding to the target service area from the one or more preset PGW-Us according to the target service area As the second PGW-U.
18. The method according to any one of claims 10 to 17, further comprising:

    Allocating address information by the PGW-C to the terminal device;

    The PGW-C sends the address information to the SGW-C.
19. The method according to claim 18, wherein the address information includes second address information; after the PGW-C sends the address information to the SGW-C, further comprising:

    The SGW-C sends the second address information to the SGW-U.
20. The method according to claim 18, wherein the address information further comprises first address information; after the PGW-C sends the address information to the SGW-C, further comprising:

    The SGW-C sends the first address information to the terminal device.
21. A data stream processing method, comprising:

    The first user plane serving gateway SGW-U receives the second address information of the terminal device sent by the control plane serving gateway SGW-C;

    After the first SGW-U receives the data stream of the terminal device, if it is determined that the data stream is a data stream of a local service, updating the source address information of the data stream to the second address information, And sending the updated data stream to the second SGW-U;

    Receiving, by the second SGW-U, a data stream sent by the first SGW-U, and sending the data stream to a second user plane PDN gateway PGW-U;

    The second PGW-U receives a data stream sent by the second SGW-U, and sends the data stream to a local server.
22. A data stream processing method, comprising:

    The control plane service gateway SGW-C obtains the location information of the terminal device;

    Selecting, by the SGW-C, a first user plane serving gateway SGW-U, a second SGW-U, and a second user plane PDN gateway PGW-U for the terminal device according to the location information of the terminal device;

    The SGW-C sends instruction information to the control plane PDN gateway PGW-C, and the instruction information is used to instruct the SGW-C to select the second SGW-U and the second PGW- for the terminal device. U;

    Receiving, by the PGW-C, the instruction information and assigning second address information to the terminal device according to the instruction information;

    The PGW-C sends the second address information to the SGW-C;

    The SGW-C receives the second address information, and sends the second address information to the first SGW-U.
23. A data stream processing method, comprising:

    After the first SGW-U receives the data stream of the terminal device, if it is determined that the data stream is a data stream of a local service, it sends the data stream to the second SGW-U;

    Receiving, by the second SGW-U, a data stream sent by the first SGW-U, and sending the data stream to a second user plane PDN gateway PGW-U;

    The second PGW-U receives a data stream sent by the second SGW-U, and sends the data stream to a local server.
24. A data stream processing method, comprising:

    SGW-C and / or PGW-C determine a second SGW-U and a second PGW-U for the terminal device;

    The SGW-C establishes a connection with the second SGW-U, and the PGW-C establishes a connection with the second PGW-U.
25. A data stream processing system is characterized by comprising a user plane service gateway SGW-U, a control plane service gateway SGW-C, a control plane PDN gateway PGW-C, and a second user plane PDN gateway PGW-U, wherein:

    The SGW-C is configured to obtain location information of a terminal device; select the SGW-U and the second PGW-U for the terminal device according to the location information of the terminal device; and send the information to the PGW-C Sending instruction information, the instruction information is used to instruct the SGW-C to select the second PGW-U for the terminal device;

    The PGW-C is configured to receive the instruction information, and allocate second address information to the terminal device according to the instruction information; and send the second address information to the SGW-C;

    The SGW-C is further configured to receive the second address information and send the second address information to the SGW-U;

    The SGW-U is configured to receive the second address information of the terminal device sent by the SGW-C; after receiving the data stream of the terminal device, if it is determined that the data stream is a data stream of a local service, Update the source address information of the data stream to the second address information, and send the updated data stream to the second PGW-U;

    The second PGW-U is configured to receive a data stream sent by the SGW-U, and send the data stream to a local server.
26. A data stream processing system is characterized by comprising a user plane service gateway SGW-U, a control plane service gateway SGW-C, a control plane PDN gateway PGW-C, and a second user plane PDN gateway PGW-U, wherein:

    The SGW-C and / or the PGW-C are used to determine an SGW-U and a second PGW-U for a terminal device; the SGW-C is used to establish a connection with the SGW-U, and the PGW- C is used to establish a connection with the second PGW-U;

    The SGW-U is configured to send the data stream to the second PGW-U if the data stream is determined to be a data stream of a local service after receiving the data stream of the terminal device;

    The second PGW-U is configured to receive a data stream sent by the SGW-U, and send the data stream to a local server.
27. A data stream processing system, comprising a first user plane service gateway SGW-U, a second SGW-U, a control plane service gateway SGW-C, a control plane PDN gateway PGW-C, and a second user plane PDN gateway. PGW-U, of which:

    The SGW-C is used to obtain location information of a terminal device; and according to the location information of the terminal device, selecting a first user plane serving gateway SGW-U, a second SGW-U, and a second user plane for the terminal device PDN gateway PGW-U; sending instruction information to the PGW-C, the instruction information is used to instruct the SGW-C to select the second SGW-U and the second PGW-U for the terminal device ;

    The PGW-C is configured to receive the instruction information, and allocate second address information to the terminal device according to the instruction information; and send the second address information to the SGW-C;

    The SGW-C is further configured to receive the second address information and send the second address information to the first SGW-U;

    The first SGW-U is configured to receive second address information of a terminal device sent by the SGW-C; after receiving a data stream of the terminal device, if it is determined that the data stream is a data stream of a local service, Update the source address information of the data stream to the second address information, and send the updated data stream to the second SGW-U;

    The second SGW-U is configured to receive a data stream sent by the first SGW-U, and send the data stream to a second PGW-U;

    The second PGW-U is configured to receive a data stream sent by the second SGW-U, and send the data stream to a local server.
28. A data stream processing system, comprising a first user plane service gateway SGW-U, a second SGW-U, a control plane service gateway SGW-C, a control plane PDN gateway PGW-C, and a second user plane PDN gateway PGW-U, of which:

    The SGW-C and / or the PGW-C are used to determine a second SGW-U and a second PGW-U for a terminal device; the SGW-C is used to establish a connection with the second SGW-U, The PGW-C is configured to establish a connection with the second PGW-U;

    The first SGW-U is configured to send the data stream to the second SGW-U if it is determined that the data stream is a data stream of a local service after receiving the data stream of the terminal device;

    The second SGW-U is configured to receive a data stream sent by the first SGW-U, and send the data stream to a second PGW-U;

    The second PGW-U is configured to receive a data stream sent by the second SGW-U, and send the data stream to a local server.
29. A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to cause a computer to execute the computer program according to any one of claims 1 to 24. Data stream processing methods.
30. A device, comprising:

    Memory for storing program instructions;

    The processor is configured to call a program instruction stored in the memory and execute the data stream processing method according to any one of claims 1 to 24 according to the obtained program.

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