WO2014205832A1

WO2014205832A1 - Method, border gateway, and control plane device for transmitting data

Info

Publication number: WO2014205832A1
Application number: PCT/CN2013/078492
Authority: WO
Inventors: 周伟
Original assignee: 华为技术有限公司
Priority date: 2013-06-29
Filing date: 2013-06-29
Publication date: 2014-12-31
Also published as: CN105264820A; CN105264820B

Abstract

Provided are a method, border gateway, and control plane device for transmitting data, the method comprising: receiving gateway switching information transmitted by a control plane device, the gateway switching information including information of a target gateway switched by a sender transmitting data; receiving the data transmitted by the sender and transmitting the data via the target gateway. According to the method, border gateway, and control plane device for transmitting data in an embodiment of the present invention, when information related to a switched target gateway is transmitted to a border gateway, the border gateway can transmit data to a receiver via the switched gateway after the gateway switching operation is performed by a sender, thus trying to ensure uninterrupted data traffic of users.

Description

Method for transmitting data, border gateway and control plane device

Technical field

The present invention relates to gateway technologies, and in particular, to a method for transmitting data, a border gateway, and a control plane device.

Background technique

EPS (Evolved Packet System) is divided into two parts: the access network and the core network. In the non-roaming scenario, the radio access network is an evolved universal terrestrial radio access network (Evolved Universal Terrestrial Radio Access Network, E -UTRAN) , used to implement all functions related to the evolution of network wireless. The core network includes a Mobiity Management Entity (MME), a Serving Gateway (SGW), and a Packet Data Network Gateway (PGW). When the E-UTRAN is switched, if the PGW changes, the data service of the user will be interrupted. Summary of the invention

The embodiment of the present invention provides a method for transmitting data, a border gateway, and a control plane device, to solve the problem that the data service of the user is interrupted if the PGW changes when the E-UTRAN is switched in the prior art.

A first aspect of the embodiments of the present invention provides a method for transmitting data, including:

Receiving, by the control plane device, gateway switching information, where the gateway switching information includes information of a target gateway after the sender of the data is switched;

Receiving data sent by the sender and transmitting the data through the target gateway. In a first possible implementation manner, according to the first aspect, the gateway switching information sent by the receiving control plane device includes:

Receiving Internet control message protocol information of the sender of the transmission data sent by the control plane device;

And modifying, according to the Internet control message protocol information, the original gateway in the routing table corresponding to the pre-switching to the target gateway in the Internet Control Protocol message. In a second possible implementation manner, according to the first aspect, the gateway switching information sent by the receiving control plane device includes:

Receiving, by the control plane device, gateway switching information corresponding to the sender of the transmission data; and modifying, in advance, the original gateway before the handover corresponding to the sender of the transmission data to be the target gateway in the gateway switching information.

In a third possible implementation manner, according to the second possible implementation manner, the sending, by the target gateway, the data sent by the sender to the receiver includes: The data sent by the sender is encapsulated by the tunnel. The outer address of the data encapsulated by the tunnel is the border gateway to the target gateway, and the inner layer address is the receiver to the sender.

The tunnel encapsulated data is sent to the target gateway to cause the target gateway to decapsulate the data and send the decapsulated data to the recipient.

In a fourth possible implementation manner, according to the first aspect, the gateway switching information sent by the receiving control plane device includes:

Receiving unicast address information of the switched target gateway sent by the control plane device.

A second aspect of the present invention provides a method for transmitting data, including:

Receiving data sent by the sender, where the data includes information of a target gateway that transmits the data;

When it is determined that the target gateway is different from the original gateway corresponding to the sender that is stored in advance, the information of the target gateway is replaced by the information of the target gateway;

The data is sent to the recipient through the target gateway.

In a first possible implementation, according to the second aspect, before the sending, by the target gateway, the receiver, the method further includes:

The received data is tunnel encapsulated, and the outer address of the tunnel encapsulated data is the border gateway to the target gateway, and the encapsulated inner layer address is the receiver to the sender.

A third aspect of the present invention provides a method for transmitting data, including:

Obtaining information of the switched target gateway corresponding to the sender of the transmitted data;

Transmitting the gateway switching information to the border gateway corresponding to the sender, so that the border gateway sends the received data sent by the sender to the receiver through the switched gateway. And the gateway switching information includes information about the target gateway of the sender.

In a first possible implementation, according to the third aspect, the gateway switching information is sent to the border gateway corresponding to the sender, where the information about the target gateway of the sender includes:

Sending, by the original gateway before the handover, the control flow table to the original gateway, so that the original gateway sends Internet control message protocol information to the border gateway according to the control flow table, where the Internet control message protocol information includes a target gateway Information.

A fourth aspect of the present invention provides a border gateway, including:

a first receiving unit, configured to receive gateway switching information sent by the control plane device, where the gateway switching information includes information of a target gateway after the sender of the transmitting data is switched;

a first sending unit, configured to receive data sent by the sender, and send the data by using the target gateway.

In a first possible implementation manner, according to the fourth aspect, the first receiving unit is specifically configured to:

And modifying, according to the Internet control message protocol information, the original gateway before the handover in the routing table to the target gateway in the Internet Control Protocol message.

In a second possible implementation manner, according to the fourth aspect, the first receiving unit is specifically configured to:

In a third possible implementation manner, according to the second possible implementation manner, the first sending unit is specifically configured to:

The received data sent by the sender is tunnel encapsulated, and the outer address of the tunnel encapsulated data is the border gateway to the target gateway, and the inner layer address is the receiver to the sender;

The tunnel encapsulated data is sent to the target gateway, so that the target gateway decapsulates the data and sends the decapsulated data to the receiver. In a fourth possible implementation manner, according to the fourth aspect, the first receiving unit is specifically configured to:

A fifth aspect of the present invention provides a border gateway, including:

a second receiving unit, configured to receive data sent by the sender, where the data includes information of a target gateway that transmits the data;

And an updating unit, configured to replace information of the original gateway by using information of the target gateway when determining that the target gateway is different from the original gateway corresponding to the sender that is stored in advance;

a second sending unit, configured to send the data to the receiver by using the target gateway. In a first possible implementation manner, according to the fifth aspect, the second sending unit is further configured to:

A sixth aspect of the present invention provides a control surface device, including:

An acquiring unit, configured to acquire information of the switched target gateway corresponding to the sender of the transmitted data, and a third sending unit, configured to send, to the border gateway corresponding to the sender, gateway switching information, so that the border gateway will receive the The data sent by the sender is sent to the receiver by the switched gateway, and the gateway switching information includes information of the target gateway of the sender.

In a first possible implementation manner, according to the sixth aspect, the third sending unit is specifically configured to:

Sending a control flow table to the original gateway before the handover corresponding to the sender, so that the original gateway sends Internet control message protocol information to the border gateway according to the control flow table, so that the border gateway will receive the received The data sent by the sender is sent to the receiver through the switched gateway, and the Internet control message protocol information includes information of the target gateway.

A seventh aspect of the present invention provides a border gateway, including: at least one first processor, and a first memory, where the first memory is configured to store executable program code, where the first processor reads by using Executing program code stored in the first memory to execute a program corresponding to the executable program code for: Receiving, by the control plane device, gateway switching information, where the gateway switching information includes information of a target gateway after the sender of the transmitted data is switched;

Receiving data sent by the sender and transmitting the data through the target gateway. An eighth aspect of the present invention provides a border gateway, including: at least one second processor, and a second memory, where the second memory is configured to store executable program code, where the second processor reads Executing program code stored in the second memory to execute a program corresponding to the executable program code for:

The data is sent to the recipient through the target gateway.

A ninth aspect of the present invention provides a control plane device, including: at least one third processor, and a third memory, wherein the third memory is configured to store executable program code, wherein the third processor reads The executable program code stored in the third memory to run a program corresponding to the executable program code for:

Transmitting the gateway switching information to the border gateway corresponding to the sender, so that the border gateway sends the received data sent by the sender to the receiver through the switched gateway, where the gateway switching information is Information including the target gateway of the sender.

The method for transmitting data, the border gateway, and the control plane device according to the embodiment of the present invention, by transmitting the related information of the switched target gateway to the border gateway, so that the border gateway can pass the switched gateway after the gateway performs the gateway switching operation. Send data to the receiver to ensure that the user's data service is not interrupted. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is some embodiments of the present invention, and those skilled in the art can obtain other ones according to these drawings without paying creative labor. The figure.

1 is a schematic flowchart of a method for transmitting data according to an embodiment of the present invention; FIG. 2 is a schematic flowchart of a method for transmitting data according to another embodiment of the present invention; FIG. 3 is a transmission data according to still another embodiment of the present invention. FIG. 4 is a schematic flowchart of a method for transmitting data according to still another embodiment of the present invention; FIG. 5 is a schematic flowchart of a method for transmitting data according to another embodiment of the present invention; FIG. 6 is a schematic diagram of a method for transmitting data according to another embodiment of the present invention; FIG. 7 is a schematic flowchart of a method for transmitting data according to still another embodiment of the present invention; FIG. 8 is a schematic flowchart of a method for transmitting data according to another embodiment of the present invention; FIG. 9 is a schematic structural diagram of a border gateway according to an embodiment of the invention; FIG.

FIG. 10 is a schematic structural diagram of a border gateway according to another embodiment of the present invention; FIG.

11 is a schematic structural view of a control plane device according to an embodiment of the present invention; detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Embodiment 1

This embodiment provides a method for transmitting data, and the method for transmitting data is mainly applicable to an E-UTRAN network. The execution entity of the method for transmitting data in this embodiment is a Border Gateway (BG), which is used to exchange selected path information between gateway hosts and maintain a routing table.

As shown in FIG. 1, it is a schematic flowchart of a method of transmitting data according to the present embodiment.

Step 101: Receive gateway switching information sent by the control plane device, where the gateway switching information includes information of the target gateway after the sender of the transmitted data is switched.

The control plane device may specifically be a controller for controlling gateway switching, and the gateway switching information may be gateway switching information of a sender that sends data. The sender can be a UE (User Equipment) or a node, and of course can be any other Communication equipment will not be described here. The target gateway of this embodiment may specifically be a PGW.

There are many reasons for the gateway to perform the gateway switching operation. For example, because the sender needs to update the gateway, the load balancing needs to update the gateway, or the gateway is updated due to maintenance requirements, etc., and details are not described herein.

Step 102: Receive data sent by the sender, and send data through the target gateway.

When the border gateway receives the data sent by the sender, the data is sent to the target gateway according to the information of the target gateway in the previously received gateway switching information, and then sent by the target gateway to the receiver.

It should be noted that the data can be implemented in the form of a message.

According to the method for transmitting data according to this embodiment, the related information of the target gateway after the handover is sent to the border gateway, so that the border gateway can send data to the receiver through the switched gateway after the gateway performs the handover operation, and try to ensure that the data is transmitted to the receiver. The user's data service is not interrupted.

Embodiment 2

This embodiment provides a method for transmitting data based on Embodiment 1.

As shown in FIG. 2, it is a flow chart of a method of transmitting data according to the present embodiment.

Step 201: An Internet (Internet) device sends downlink data through PGW1.

The sender of this embodiment is an Internet device, and PGW1 is the original gateway before the gateway switching operation occurs.

For clarity of description, the gateway switching operation is specifically described as a gateway switching operation of an Internet device. In this embodiment, the gateway is switched by PGW1 to PGW2, that is, PGW2 is the target gateway. Specifically, when the gateway needs to be switched, the controller instructs the gateway to perform gateway switching, and the controller may be an MME.

Step 203: The control plane device sends Internet Control Message Protocol (ICC) information to the border gateway corresponding to the sender, and the border gateway sends the PGW1 corresponding to the sender in the maintained routing table according to the Internet message control protocol information. Change to PGW2.

The Internet Control Message Protocol information includes information of PGW2, and the Internet Control Message Protocol information is used to instruct the border gateway to pass the downlink data sent by the received Internet device. PGW2 is sent to the receiver.

The mapping table may pre-store the correspondence between each sender and the gateway and/or the correspondence between the receiver and the gateway. When the correspondence changes, the border gateway needs to modify the routing table accordingly.

The control plane device sends the Internet control message protocol information to the border gateway corresponding to the sender, which may be:

The control flow table is sent to the original gateway before the handover corresponding to the sender, so that the original gateway sends Internet control message protocol information to the border gateway according to the control flow table, where the control flow table includes information of the target gateway.

The control flow table is configured to enable the PGW1 to send the data sent by the Internet device to the receiver of the embodiment, the data may be referred to as trigger data, and send an ICMP redirect (Redirect) set in the control flow table to the border gateway. The message is used to instruct the border gateway to switch the received data sent by the sender to the PGW2, and send the data to the receiver through the PGW2. The matching field in the control flow table is set to the source address is the data sent from the Internet device, and the action is set to send an ICMP Redirect message, where the redirected target gateway is set to PGW2. After receiving the control flow table, the PGW1 is installed. After receiving the data from the Internet device, the PGW1 sends an ICMP Redirect message to the BG according to the action setting of the control flow table, so that the border gateway can redirect the data to the target gateway. PGW2 goes up. Step 204: After receiving the data sent by the Internet device, the border gateway sends the data to the receiver through the PGW2.

It should be noted that the PGW1 also needs to send the trigger data to the border gateway, and then the border gateway sends the trigger data to the receiver through the PGW2 to avoid data loss.

According to the method for transmitting data according to this embodiment, when the PGW is switched, the border gateway can still send data to the receiver through the changed gateway to ensure that the data transmission service of the user is not interrupted as much as possible.

Embodiment 3

This embodiment provides a method for transmitting data based on Embodiment 1.

In the network architecture provided in this embodiment, the data transmission between the border gateway and each PGW needs to be encapsulated in a tunnel. The tunnel encapsulation here may be an IP (Internet Control) domain such as GRE (Generic Routing Encapsulation). Tunnel encapsulation protocol. In this embodiment, the sender is the UE, the PGWa is the original gateway before the gateway switching operation occurs, and the PGWb is the target gateway after the handover operation occurs. The two parties in this embodiment are a server and a UE, respectively, and the control plane device is a controller. As shown in FIG. 3, it is a schematic diagram of a method of transmitting data according to the present embodiment. In this embodiment, the data sent by the UE to the server is referred to as a "message", and the data sent by the server to the UE is referred to as a "response message".

Step 301: The UE sends a packet to the server through the PGWa.

Before the gateway switching operation occurs, the UE sends a message to the server through the original gateway PGWa. Specifically, the PGWa tunnel encapsulates the packet and sends the encapsulated packet to the border gateway.

Step 302: When the border gateway receives the packet, the border gateway stores the correspondence between the UE and the gateway that transmits the packet.

In this embodiment, after the border gateway receives the packet through the PGW, the embodiment records that the UE corresponds to the PGWa.

Step 303: The border gateway decapsulates the packet, and then sends the decapsulated packet to the server.

Step 304: The server sends a response packet to the UE through the PGWa.

Specifically, after the response packet arrives at the border gateway, the border gateway encapsulates the response packet, and the outer address of the encapsulated packet is the border gateway to the PGWa, and the inner layer address is the server to the UE. After receiving the response message, the PGWa performs decapsulation and sends the decapsulated response message to the UE.

Step 305: After the gateway switching operation occurs, the controller sends the gateway switching information to the border gateway.

In the gateway switching operation in this embodiment, the gateway switches from PGWa to PGWb, and the gateway switching message includes information of the PGWb.

Step 306: The border gateway modifies the pre-stored original gateway PGWa corresponding to the UE to the PGWb in the gateway switching information.

Step 307: After receiving the response packet sent by the server, the border gateway encapsulates the response packet and sends the response packet to the UE through the PGWb.

Specifically, the border gateway finds the IP address of the corresponding target gateway, and tunnels the response packet. The outer address of the response packet encapsulated by the tunnel is the border gateway to the PGWb, and the inner layer address is the server to the UE. When the server sends a response packet to the UE, the packet is sent by the border gateway. After reaching the PGWb, the PGWb decapsulates the response message and sends it to the UE.

According to the method for transmitting data according to this embodiment, when the PGW is switched, the border gateway can still send data to the server through the changed gateway, that is, the PGWb, to ensure that the data transmission service of the user is not interrupted as much as possible.

Embodiment 4

This embodiment provides a method for transmitting data based on Embodiment 1. In this embodiment, the original gateway is PGW3, the target gateway is PGW4, the control plane device is a controller, and the sender is a server (Server), which may be a server deployed outside the border gateway, and the receiver is a terminal.

As shown in FIG. 4, it is a schematic diagram of a method of transmitting data according to the present embodiment.

Step 401: The border gateway receives data sent by the server, where the data includes a unicast address of the original gateway.

In this embodiment, the data sent by the server carries the unicast address of the PGW3. Of course, the data may also have anycast address, a routing header, and a destination address of the receiver. The terminal first attaches to the original gateway PGW3 and needs to communicate with the server through the PGW3.

Step 402: The border gateway sends the data to the original gateway according to the unicast address in the data, to be sent by the original gateway to the terminal.

Step 403, a gateway switching operation occurs.

At this time, the gateway is switched from the original gateway PGW3 to the target gateway PGM. At this point, the terminal is attached to the PGM. How the specific terminal is attached to the PM belongs to the prior art and will not be described here.

Step 404: The border gateway receives a gateway switching message sent by the controller, where the gateway switching message includes information of the target gateway.

Specifically, the step is: the border gateway receives the unicast address information of the switched target gateway sent by the control plane device. The gateway switching message may also include a mapping relationship between the anycast address of the target gateway and the unicast address of the target gateway, that is, the border gateway may find the unicast address of the target gateway through the mapping relationship.

It should be noted that if the border gateway does not receive the gateway handover message sent by the controller, the data is still sent to PGW3.

Step 405: The border gateway selects a target gateway according to the gateway switching information.

Step 406: The border gateway sends data through the target gateway.

The border gateway can also send the unicast address of the target gateway to the server, and the server updates the unicast address of the target gateway in the data, that is, the unicast address of the PGW3 is modified to the unicast address of the PGM. Then, after receiving the data sent by the server, the border gateway can be based on the data.

The unicast address of PGW4 is selected to send the data to PGW4.

According to the method for transmitting data according to this embodiment, when the PGW is switched, the border gateway can still send data to the terminal through the changed gateway, that is, the PGWb, to ensure that the data transmission service of the user is not interrupted as much as possible.

Embodiment 5

This embodiment provides a method for transmitting data, and the method for transmitting data is mainly applicable to an E-UTRAN network. The execution subject of the method of transmitting data of this embodiment is a border gateway, and the control plane device is used for a communication system.

As shown in FIG. 5, it is a flow chart of a method of transmitting data according to the present embodiment.

Step 501: Receive data sent by a sender, where the data includes information of a target gateway that transmits data.

The sender of this embodiment may be a UE or a node, and may be any other communication device, and details are not described herein again. The sender can specifically send data to the border gateway indirectly through other network devices, or directly send the data to the border gateway.

Step 502: When it is determined that the target gateway is different from the original gateway corresponding to the pre-stored sender, the information of the target gateway is used to replace the information of the original gateway.

Specifically, the information of the target gateway in the data is compared with the pre-stored original gateway information. When the target gateway is found to be inconsistent with the original gateway, the gateway switching operation may be known, and the message needs to be sent to the receiver through the target gateway.

Step 503: Send data to the receiver through the target gateway.

According to the method for transmitting data in the embodiment, the border gateway can know whether the gateway switching operation occurs by using the gateway information carried in the data, so that the border gateway can pass the switched gateway to the receiver after the sender transmits the gateway switching operation. Send data, try to ensure that the user's data service is not interrupted.

Embodiment 6

This embodiment provides a method for transmitting data based on Embodiment 4.

In the network architecture provided in this embodiment, the data transmission between the border gateway and each PGW needs to be encapsulated in a tunnel. The tunnel encapsulation here may be a tunnel encapsulation protocol in the field of IP (Internet Control) such as GRE. In this embodiment, the sender is the UE, the PGWc is the original gateway before the gateway switching operation occurs, and the PGWd is the target gateway after the handover operation occurs. The two parties in this embodiment are respectively a server and a UE, and the control plane device is a controller. In this embodiment, the data sent by the UE to the server is referred to as a "message", and the data sent by the server to the UE is referred to as a "response message."

As shown in FIG. 6, it is a schematic diagram of a method of transmitting a message according to the present embodiment.

Step 601: The UE sends a packet to the server by using the PGWc.

In this embodiment, before the gateway switching operation occurs, the UE sends a packet to the server through the original gateway PGWc, where the packet may carry the information of the PGWc. Specifically, the PGWc tunnels the packet and sends the encapsulated packet to the border gateway.

Step 602: When the border gateway receives the packet, the border gateway stores a correspondence between the UE and a gateway that transmits the packet.

In this embodiment, after receiving the packet by the PGWc, the border gateway records that the UE corresponds to the PGWc.

Step 603: The border gateway decapsulates the packet, and then sends the decapsulated packet to the server.

Specifically, the border gateway finds the IP address of the corresponding original gateway, and performs tunnel encapsulation on the packet. The outer address of the encapsulated packet is the border gateway to PGWc, and the inner address is the server to the UE.

Step 604: The server sends a response packet to the UE by using the PGWc.

Specifically, after the response packet arrives at the border gateway, the border gateway encapsulates the response packet, and the outer address of the encapsulated packet is the border gateway to the PGWc, and the inner layer address is the server to the UE. After receiving the response packet, the PGWc performs decapsulation and sends the response packet after the decapsulation to the UE.

Step 605: After the gateway switching operation occurs, the UE sends a message to the server through the PGWd.

The packet carries the information of the PGWd.

Step 606: After receiving the packet, the border gateway determines whether the pre-stored original gateway corresponding to the UE is the same as the target gateway in the packet. If the determination result is yes, go to step 603. Otherwise, go to step 607.

Step 607: The border gateway replaces information of the original gateway by using information of the target gateway. In this embodiment, the information of the PGWc is replaced by the information of the PGWd, and the border gateway records the UE and the PGWd.

Step 608: After receiving the response packet sent by the server, the border gateway encapsulates the response packet and sends the response packet to the UE through the PGWd.

Specifically, the border gateway finds the IP address of the corresponding target gateway, and tunnels the response packet. The outer address of the response packet encapsulated by the tunnel is the border gateway to PGWd, and the inner address is the server to the UE. When the server sends a response packet to the UE, after the packet arrives at the PGWd by the border gateway, the PGWd decapsulates the response packet and then sends the response packet to the UE.

According to the method for transmitting data according to this embodiment, when the PGW is switched, the border gateway can still send data to the server through the changed gateway, that is, the PG, to ensure that the data transmission service of the user is not interrupted as much as possible.

Example 7

This embodiment provides a method for transmitting data based on Embodiment 5.

As shown in FIG. 7, it is a schematic flowchart of a method of transmitting data according to the present embodiment.

Step 701: The border gateway receives data sent by the server, where the data includes a unicast address of the original gateway.

In this embodiment, the data sent by the server carries the unicast address of the PGW5. Of course, the data may also have anycast address, a routing header, and a destination address of the receiver. The terminal first attaches to the original gateway PGW5 and needs to communicate with the server through the PGW5.

Step 702: The border gateway sends the data to the original gateway according to the unicast address in the data, to be sent by the original gateway to the terminal.

Step 703, a gateway switching operation occurs.

At this time, the gateway is switched from the original gateway PGW5 to the target gateway PGW6. At this time, the terminal is attached to the PGW 6. How the specific terminal is attached to the PW6 belongs to the prior art, and details are not described herein again.

Step 704: The server receives the amount information of the unicast address update sent by the controller, and updates the unicast address.

In this way, when the server sends data again, it will carry the unicast address of PGW6 in the data. Step 705: The border gateway receives data sent by the server, where the data includes a unicast address of the switched target gateway.

After receiving the data, the border gateway determines whether the unicast address carried in the data is related to the original network. The unicast addresses are the same. If they are the same, it means that no gateway switching operation occurs. If they are different, it indicates that the gateway switching operation has occurred. The unicast address of the target gateway updated in the received data is used.

Step 706: The border gateway selects a target gateway according to the gateway switching information.

The border gateway finds the corresponding target gateway PGW6 according to the unicast address of the target gateway. Step 707: The border gateway sends data through the target gateway.

The border gateway first sends data to the target gateway, and then the target gateway sends data to the receiver. According to the method for transmitting data according to this embodiment, when the PGW is switched, the border gateway can still send data to the terminal through the changed gateway, that is, the PG, to ensure that the data transmission service of the user is not interrupted as much as possible.

Example eight

The embodiment provides a method for transmitting data, and the method for transmitting data is mainly applicable to

E-UTRAN network. The execution subject of the method of transmitting data of this embodiment is a control plane device for a communication system.

As shown in FIG. 8, it is a flow chart of a method of transmitting data according to the present embodiment.

Step 801: Acquire information about the switched target gateway corresponding to the sender of the transmitted data. The sender can be a UE or a node. Specifically, how to obtain the information of the target gateway after the sender switch may be selected by the control plane device for the sender. The control plane device can generate corresponding gateway switching information according to the target gateway information.

Step 802: Send gateway switching information to the border gateway corresponding to the sender, so that the border gateway sends the received data sent by the sender to the receiver through the switched gateway, where the gateway switching information includes the destination gateway of the sender. information.

The method for transmitting data in the embodiment may be consistent with the operation of the control plane device in the second embodiment, that is, the gateway switching information is sent to the border gateway corresponding to the sender, and the information of the gateway gateway including the destination gateway of the sender includes:

The control flow table is sent to the original gateway before the handover corresponding to the sender, so that the original gateway sends Internet control message protocol information to the border gateway according to the control flow table, and the information of the target gateway is included in the Internet control message protocol information.

The operation of the specific border gateway after receiving the Internet control message protocol is the same as that of the second embodiment, and details are not described herein again. According to the method for transmitting data according to the embodiment, the control plane device sends the related information of the switched target gateway to the border gateway, so that the border gateway can send the data to the receiver through the switched gateway after the sender transmits the gateway switching operation. , try to ensure that the user's data services are not interrupted.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The steps of the foregoing method embodiments are included; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Example nine

The embodiment provides a border gateway for performing the method for transmitting data in Embodiment 1. As shown in FIG. 9, it is a schematic structural diagram of a border gateway according to this embodiment. The border gateway of this embodiment includes a first receiving unit 901 and a first transmitting unit 902.

The first receiving unit 901 is configured to receive the gateway switching information sent by the control plane device, where the gateway switching information includes the information of the target gateway after the sender of the data is switched; the first sending unit 902 is configured to receive the data sent by the sender. And transmitting data through the target gateway received by the first receiving unit 901.

The specific operation method of the border gateway in this embodiment is the same as that in the first embodiment, and is not described here.

According to the border gateway of the embodiment, by receiving and transmitting the related information of the target gateway after the handover, the border gateway can send data to the receiver through the switched gateway after the gateway performs the gateway handover operation, thereby ensuring the data service of the user as much as possible. No interruptions occur.

Optionally, the first receiving unit 901 of this embodiment is specifically configured to:

Receiving Internet control message protocol information of a sender of the transmission data transmitted by the control plane device;

According to the Internet control message protocol information, the sender in the routing table is modified to the target gateway in the Internet Control Protocol message corresponding to the original gateway before the handover.

At this time, the specific operation method of the border gateway is the same as that in the second embodiment, and details are not described herein again. Optionally, the first receiving unit 901 is specifically configured to:

Receiving gateway switching information corresponding to the sender of the transmission data sent by the control plane device; The original gateway before the handover corresponding to the sender of the transmitted data is modified to be the target gateway in the gateway switching information.

Optionally, the first sending unit 902 is specifically configured to:

The received data sent by the sender is tunnel encapsulated, and the outer address of the data encapsulated by the tunnel is the border gateway to the target gateway, and the inner layer address is the receiver to the sender;

The tunnel encapsulated data is sent to the target gateway to cause the target gateway to decapsulate the data and send the decapsulated data to the receiver.

At this time, the specific operation method of the border gateway is the same as that in the third embodiment, and details are not described herein again. Optionally, the first sending unit 901 is specifically configured to:

At this time, the specific operation method of the border gateway is the same as that in the fourth embodiment, and details are not described herein again. Example ten

The embodiment provides a border gateway for performing the method for transmitting data in Embodiment 5. As shown in FIG. 10, it is a schematic structural diagram of a border gateway according to this embodiment. The border gateway includes a second receiving unit 1001, an updating unit 1002, and a second transmitting unit 1003.

The second receiving unit 1001 is configured to receive data sent by the sender, where the data includes information of the target gateway that transmits the data, and the updating unit 1002 is configured to determine, when determining, the target gateway received by the second receiving unit 1001 and the pre-stored transmission. When the original gateway corresponding to the party is different, the information of the original gateway is replaced by the information of the target gateway; the second sending unit 1003 is configured to send the data to the receiver by the target gateway updated by the updating unit 1002.

The specific operation method of the border gateway in this embodiment is the same as that in the fifth embodiment, and is not described here.

According to the embodiment, the border gateway can know whether the gateway switching operation occurs by using the gateway information carried in the data, so that the border gateway can send data to the receiver through the switched gateway after the sender transmits the gateway switching operation, and try to ensure The user's data service is not interrupted.

Optionally, the second sending unit 1003 of this embodiment is further configured to:

The received data is encapsulated by the tunnel. The outer address of the encapsulated data is the border gateway to the target gateway. The encapsulated inner address is the receiver to the sender.

At this time, the specific operation method of the border gateway is the same as that in the sixth embodiment, and details are not described herein again. Embodiment ^1

The embodiment provides a control plane device for performing the method of transmitting data of the eighth embodiment.

As shown in FIG. 11, the control plane device of this embodiment includes an acquisition unit 1101 and a third transmission unit 1102. The acquiring unit 1101 acquires information of the switched target gateway corresponding to the sender of the transmitted data, and the third sending unit 1102 is configured to send the gateway switching information to the border gateway corresponding to the sender, so that the border gateway will receive the received sender. The transmitted data is sent to the receiver through the switched gateway, and the gateway switching information includes information of the target gateway of the sender acquired by the obtaining unit 1101.

The specific operation method of the control plane device of this embodiment is the same as that of the eighth embodiment, and will not be further described herein.

Optionally, the third sending unit 1102 is specifically configured to:

Sending a control flow table to the original gateway before the handover corresponding to the sender, so that the original gateway sends the Internet control message protocol information to the border gateway according to the control flow table, so that the border gateway receives the data sent by the sender, after switching The gateway sends the information to the receiver, and the Internet Control Message Protocol information includes the information of the target gateway.

According to the embodiment, the information about the target gateway after the handover is sent to the border gateway by the control plane device, so that the border gateway can send data to the receiver through the switched gateway after the sender sends the gateway handover operation, and the user is guaranteed as much as possible. Data services are not interrupted.

Example twelve

This embodiment provides another border gateway for performing the method for transmitting data in the first embodiment to the fourth embodiment.

The border gateway of this embodiment includes: at least one first processor, and a first memory, where the first memory is configured to store executable program code, wherein the first processor reads the executable program code stored in the first memory To run the program corresponding to the executable code for:

Receiving gateway switching information sent by the control plane device, where the gateway switching information includes information of the target gateway after the sender of the transmitting data is switched;

Receive data sent by the sender and send data through the target gateway.

Optionally, the first processor reads the executable program code stored in the first memory When the program corresponding to the executable program code is used to receive the gateway switching information sent by the control plane device, the specific one may be:

Optionally, the first processor, when reading the program corresponding to the executable program code, by using the executable program code stored in the first memory, for receiving the gateway switching information sent by the control plane device, may specifically be:

And receiving the gateway switching information corresponding to the sender of the transmission data sent by the control plane device; and modifying the original gateway before the handover corresponding to the sender of the transmission data to be the target gateway in the gateway switching information.

Optionally, the first processor runs a program corresponding to the executable program code by reading the executable program code stored in the first memory, and is configured to send the received data sent by the sender to the target gateway. When receiving, the specifics can be:

Example thirteen

This embodiment provides another border gateway for performing the method of transmitting data of Embodiments 5 to 7.

The border gateway of this embodiment includes: at least one second processor, and a second memory, The second memory is configured to store the executable program code, wherein the second processor runs the program corresponding to the executable program code by reading the executable program code stored in the second memory, for:

Receiving data sent by the sender, where the data includes information of the target gateway transmitting the data; when it is determined that the target gateway is different from the original gateway corresponding to the pre-stored sender, the information of the target gateway is replaced by the information of the target gateway;

Send data to the recipient through the target gateway.

Optionally, the second processor runs the program corresponding to the executable program code by reading the executable program code stored in the second memory, before being sent to the receiver through the target gateway, The executable program code stored in the second memory is read to run a program corresponding to the executable program code for:

Embodiment 14

The control plane device of this embodiment includes: at least one third processor, and a third memory, wherein the third memory is configured to store executable program code, wherein the third processor reads the executable program stored in the third memory by reading Code to run a program corresponding to the executable code for:

The gateway switching information is sent to the border gateway corresponding to the sender, so that the border gateway sends the received data sent by the sender to the receiver through the switched gateway, and the gateway switching information includes information of the target gateway of the sender.

Optionally, the gateway switching information is sent to the border gateway corresponding to the sender, where the gateway switching information includes the information of the target gateway of the sender, including: The control flow table is sent to the original gateway before the handover corresponding to the sender, so that the original gateway sends the Internet control message protocol information to the border gateway according to the control flow table, and the information of the target gateway is included in the Internet control message protocol information.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; and the modifications or substitutions do not deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

claims

1. A method of transmitting data, characterized by including:

Receive gateway switching information sent by the control plane device, where the gateway switching information includes information about the target gateway after switching by the sender of the data;

Receive data sent by the sender and send the data through the target gateway.

2. The method of transmitting data according to claim 1, wherein the receiving the gateway switching information sent by the control plane device includes:

Receive the Internet Control Message Protocol information of the sender of the data sent by the control plane device;

According to the Internet control message protocol information, the original gateway corresponding to the sender before switching in the routing table is modified to the target gateway in the Internet control protocol message.

3. The method of transmitting data according to claim 1, wherein the receiving the gateway switching information sent by the control plane device includes:

Receive the gateway switching information corresponding to the sender of the data sent by the control plane device; modify the original gateway pre-stored before switching corresponding to the sender of the data to the target gateway in the gateway switching information.

4. The method of transmitting data according to claim 3, characterized in that: sending the received data sent by the sender to the receiver through the target gateway includes: sending the received data The data sent by the tunnel encapsulation party is tunnel-encapsulated. The outer address of the tunnel-encapsulated data is from the border gateway to the target gateway, and the inner address is from the receiver to the sender;

The tunnel-encapsulated data is sent to the target gateway, so that the target gateway decapsulates the data and sends the decapsulated data to the recipient.

5. The method of transmitting data according to claim 1, wherein the receiving the gateway switching information sent by the control plane device includes:

Receive the unicast address information of the switched target gateway sent by the control plane device.

6. A method of transmitting data, characterized by including:

Receive data sent by the sender, where the data includes information about the target gateway that transmits the data;

When it is determined that the target gateway is different from the pre-stored original gateway corresponding to the sender When, use the information of the target gateway to replace the information of the original gateway;

The data is sent to the recipient through the target gateway.

7. The method of transmitting data according to claim 6, characterized in that, before sending the data to the recipient through the target gateway, it further includes:

The received data is tunnel-encapsulated. The outer address of the tunnel-encapsulated data is from the border gateway to the target gateway, and the inner address of the tunnel-encapsulated data is from the receiver to the sender.

8. A method of transmitting data, characterized by including:

Obtain the information of the switched target gateway corresponding to the sender of the data;

Send gateway switching information to the border gateway corresponding to the sender, so that the border gateway sends the received data sent by the sender to the recipient through the switched gateway, in the gateway switching information Contains information about the sender's target gateway.

9. The method of transmitting data according to claim 8, wherein the gateway switching information is sent to the border gateway corresponding to the sender, and the gateway switching information includes information about the target gateway of the sender. include:

Send a control flow table to the original gateway before switching corresponding to the sender, so that the original gateway sends Internet control message protocol information to the border gateway according to the control flow table, and the Internet control message protocol information includes the target gateway Information.

10. A border gateway, characterized by including:

The first receiving unit is configured to receive gateway switching information sent by the control plane device, where the gateway switching information includes information about the target gateway after switching by the sender sending data;

The first sending unit is used to receive the data sent by the sender and send the data through the target gateway.

11. The border gateway according to claim 10, characterized in that the first receiving unit is specifically used to:

12. The border gateway according to claim 10, characterized in that, the first receiving The unit is specifically used for:

13. The border gateway according to claim 12, characterized in that the first sending unit is specifically used to:

Tunnel encapsulate the received data sent by the sender. The outer address of the tunnel-encapsulated data is from the border gateway to the target gateway, and the inner address is from the receiver to the sender;

14. The border gateway according to claim 10, characterized in that the first receiving unit is specifically used to:

15. A border gateway, characterized by including:

The second receiving unit is configured to receive data sent by the sender, where the data includes information about the target gateway that transmits the data;

An update unit, configured to replace the information of the original gateway with the information of the target gateway when it is determined that the target gateway is different from the original gateway corresponding to the sender stored in advance;

The second sending unit is used to send the data to the recipient through the target gateway.

16. The border gateway according to claim 15, characterized in that the second sending unit is also used to:

17. A control surface device, characterized by including:

The obtaining unit obtains the information of the switched target gateway corresponding to the sender of the data; The third sending unit is used to send gateway switching information to the border gateway corresponding to the sender, so that the border gateway will receive the The data sent by the sender is sent to the receiver through the switched gateway, and the gateway switching information includes information about the target gateway of the sender.

18. The control plane device according to claim 17, characterized in that the third sending unit is specifically used for:

Send a control flow table to the original gateway before the switch corresponding to the sender, so that the original gateway sends Internet control message protocol information to the border gateway according to the control flow table, so that the border gateway will receive all the The data sent by the sender is sent to the receiver through the switched gateway, and the Internet control message protocol information includes the information of the target gateway.

19. A border gateway, characterized in that it includes: at least a first processor, and a first memory, the first memory is used to store executable program code, wherein the first processor reads the using the executable program code stored in the first memory to run a program corresponding to the executable program code, for:

Receive data sent by the sender and send the data through the target gateway.

20. A border gateway, characterized in that it includes: at least one second processor, and a second memory, the second memory is used to store executable program code, wherein the second processor reads the use the executable program code stored in the second memory to run a program corresponding to the executable program code, for:

When it is determined that the target gateway is different from the pre-stored original gateway corresponding to the sender, use the information of the target gateway to replace the information of the original gateway;

The data is sent to the recipient through the target gateway.

21. A control plane device, characterized in that it includes: at least a third processor, and a third memory, the third memory is used to store executable program code, wherein the third processor reads The executable program code stored in the third memory is used to run the program corresponding to the executable program code for: