WO2011160527A1

WO2011160527A1 - Method, apparatus and system for transmitting shunting information

Info

Publication number: WO2011160527A1
Application number: PCT/CN2011/074581
Authority: WO
Inventors: 周娜; 王静; 梁爽; 霍玉臻
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-06-22
Filing date: 2011-05-24
Publication date: 2011-12-29
Also published as: CN102300194B; CN102300194A

Abstract

A method for transmitting shunting information is disclosed in the present invention. The method includes that: during the process of movement, a target Mobility Management Entity (MME) gains shunting strategies according to obtained shunting information, and transmits the obtained shunting strategies to a target local gateway. An apparatus and a system for transmitting shunting information are also disclosed in the present invention. The present invention realizes the transmission of the shunting information during the process of movement, enables the target MME to obtain the current shunting strategies and inform them to the target local gateway as soon as possible; and the target local gateway obtaining the shunting strategies more earlier ensures the continuity of the IP shunting service of a mobile communication system during the process of movement.

Description

Method, device and system for transmitting shunt information

The present invention relates to the delivery of offload information in the field of mobile communications, and in particular, to a method, device and system for transmitting offloaded information. Background technique

Evolved Universal Terrestrial Radio Access Network (E-UTRAN) evolved from the Evolved Universal Terrestrial Radio Access Network (EPS) in the 3rd Generation Partnership Project (EPS). , Mobility Management Entity (MME), Serving Gateway (S-GW), Packet Data Network Gateway (P-GW), Home Subscriber Server (HSS), 3 The GPP (Authentication, Authorization and Accounting) server, Policy and Charging Rules Function (PCRF) entity and other supporting nodes are composed.

1 is a schematic diagram of an EPS architecture. As shown in FIG. 1, an EPS includes: a terminal, a local gateway, a wireless side network element, a mobility management entity, a core network gateway, and an authentication authorization server, where the mobility management entity The core network gateway and the authentication authorization server are in the core network, and the mobility management entity is responsible for control planes such as mobility management, non-access layer signaling processing, and user context mobility management; the core network gateway may include S-GW and P-GW, S-GW is an access gateway device connected to E-UTRAN, which forwards data between E-UTRAN and P-GW, and is responsible for buffering paging waiting data; P-GW It is the border gateway of the EPS and Packet Data Network (PDN) network, which is responsible for PDN access and forwarding data between EPS and PDN. The home base station is a small, low-power base station deployed in indoor places such as homes and offices. The main purpose is to provide users with higher service rates and lower the cost of using high-speed services, while making up for existing distributed Insufficient coverage of cellular wireless communication systems. The advantages of home base stations are affordable, convenient, low power output, plug and play and so on. In the home base station system, the home base station is a wireless side network element.

2 is a schematic diagram of a communication system architecture including a home base station gateway. As shown in FIG. 2, the home base station can access the core network through the home base station gateway, and the system shown in FIG. 1 can also be used. The architectural approach connects directly to the core network. The main functions of the home base station gateway are: verifying the security of the home base station, handling the registration of the home base station, performing operation and maintenance management on the home base station, configuring and controlling the home base station according to the operator's requirements, and exchanging data of the core network and the home base station.

In addition to supporting access to the mobile core network, the mobile communication system including the home base station system can also support the IP offload function, and the terminal can be implemented in the home under the condition that the wireless side network element has the IP offload capability and the user subscribes to allow the IP offload. Local access to other IP devices or the Internet on the network.

As shown in FIG. 1, FIG. 2 and FIG. 3, the implementation of IP offloading in the mobile communication system can be implemented by setting a local gateway, which serves as a gateway for external access to an external network such as the Internet, and provides address allocation, charging, and grouping. Packet filtering, policy control, data offloading, radio access network application "RANAP, Radios Access Network Application Part" / General PTP (GTP, General Tunneling Protocol) / Proxy Mobile IP protocol (PMIP, Proxy Mobile IP) / Mobile IP protocol (MIP, Mobile IP) message parsing, Network Address Translation (AT), IP offload policy routing and execution.

In the mobile communication system, the local gateway can be combined or divided with the wireless side network element. When there is a home base station gateway, as shown in FIG. 2, the local gateway and the home base station gateway may be separately configured. As shown in FIG. 3, the local gateway and the home base station gateway may also be combined. The local gateway may be a local service gateway (L-SGW, Local SGW) and a local packet data gateway (L-PGW, Local PGW), or may be a separate L-PGW, or may be a data offload function entity.

As shown in FIG. 4, FIG. 5, FIG. 6a, and FIG. 6b, the IP splitting of the EPS in FIG. 1 can be implemented by adding or not adding an AT address translation function on the wireless side network element or the local gateway, and is not limited to being connected through one connection. Simultaneously implement core network access and IP offload access.

In the mobile process of the IP offload connection, whether the mobility management entity changes or not, the target mobility management entity transmits the offload policy to the target local gateway through the RAB assignment request message during the routing area update process after the mobile process. During the mobile process, the target mobility management entity cannot transmit the traffic offloading policy to the target local gateway. As a result, the traffic offloading service on the original network side cannot be performed on the target network side in time. Summary of the invention

In view of this, the main object of the present invention is to provide a method, apparatus, and system for transmitting offload information, to solve the problem that a target mobility management entity of a mobile communication system cannot timely transmit a offloading policy to a target local gateway during a mobile process. problem.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

The present invention provides a method for transmitting the offloading information, the method comprising: in the moving process, the target mobility management entity obtains the offloading policy according to the obtained offloading information, and transmits the obtained offloading policy to the target local gateway.

In the above solution, the moving process is a switching process or a location update process.

In the foregoing solution, the offload information includes one or more of the following information: a user number, a charging identifier, and a traffic signing; the trafficking policy includes one or more of the following information: a user number, a charging identifier, and a trafficking identifier. .

In the above solution, the method includes: during the moving process, the original mobility management entity determines whether it can be the target mobility management entity; if yes, the original mobility management The entity obtains the offload policy according to the saved split information, and transmits the obtained offload policy to the target local gateway; otherwise, the original mobility management entity sends the offload information to the target mobility management entity, where the target mobility management The entity receives the offload information, obtains a offload policy according to the received offload information, and transmits the obtained offload policy to the target local gateway.

In the foregoing solution, the original mobility management entity sends the offload information to the target mobility management entity, where: the original mobility management entity carries the offload information in a dedicated message that is sent by itself to the target mobility management entity. .

In the above solution, the dedicated message sent by the original mobility management entity to the target mobility management entity is a relocation forward request message or a context response message.

In the above solution, before the target mobility management entity transmits the offloading policy to the target local gateway, the method further includes: the target mobility management entity according to the obtained offloading information, and/or the local policy saved by itself, When it is determined that the current bearer or connection can be offloaded, the offloading policy is obtained according to the offloading information and/or the local policy.

In the above solution, the target mobility management entity transmits the offload information to the target local gateway, where: in the mobile process, the target mobility management entity carries the private message sent by itself to the target wireless side network element. Divide strategy.

In the above solution, the dedicated message sent by the target mobility management entity to the target radio side network element is a relocation request message, or a handover request message, or an initial context setup request message, or a tracking area update request message.

The present invention also provides an apparatus for transmitting the offloading information, the apparatus comprising: a transmitting unit, configured to obtain a offloading policy according to the obtained offloading information during the moving process, and transmit the obtained offloading policy to the target local gateway.

In the above solution, the device further includes: a receiving unit, configured to receive the offload information sent by the original target mobility entity during the moving process; the transmitting unit is further configured to: according to the offload information received by the receiving unit Obtaining the offloading strategy, and transmitting the obtained offloading strategy to Target local gateway.

In the above solution, the device further includes: a storage unit, configured to save the offloading information; the splitting unit is specifically configured to: according to the splitting information held by the storage unit, obtain a splitting strategy during the moving process, and The resulting offloading policy is transmitted to the target local gateway.

In the above solution, the device further includes: a verification unit, configured to start the transmitting unit when the current bearer or the connection can be offloaded according to the offloading information and/or the local policy saved by itself.

In the above solution, the transmitting unit is further configured to: when the mobile process is performed, transmit a traffic off policy to the target local gateway by using the target wireless side network element, or directly transmit the traffic off policy to the target local gateway.

The present invention also provides a system for transmitting the offloading information, the system comprising: a target mobility management entity and a target local gateway; wherein the target mobility management entity includes a transmitting unit, configured to Obtaining the offloading information, obtaining the offloading policy, and transmitting the obtained offloading policy to the target local gateway; the target local gateway, configured to receive the offloading policy transmitted by the transmitting unit of the target mobility management entity.

In the above solution, the system further includes: an original mobility management entity, configured to send the offload information to the target mobility management entity during the moving process;

The target mobility management entity further includes: a receiving unit, configured to receive the offload information sent by the original mobility management entity;

The transmitting unit is further configured to obtain a traffic distribution policy according to the traffic distribution information received by the receiving unit, and transmit the obtained traffic distribution policy to the target local gateway.

In the above solution, the original mobility management entity is further configured to: when it is determined that the mobile mobility management entity cannot be the target mobility management entity, send the traffic distribution information to the target mobility management entity.

In the above solution, the system further includes: a target radio side network element, configured to receive the mesh And the offloading policy sent by the transmitting unit of the mobility management entity, and sending the received offloading policy to the target local gateway.

The method, system and device for transmitting the offloading information provided by the present invention, in the moving process, the target mobility management entity transmits the offloading policy to the target local gateway according to the offloading information sent by the original mobility management entity or saved by itself, The delivery of the offloading information in the mobile process is implemented, so that the target mobility management entity can obtain and notify the current localization gateway of the current offloading strategy as soon as possible, and the target local gateway obtains the timing of the offloading strategy, ensuring the IP offloading service of the mobile communication system during the mobile process. Continuity. DRAWINGS

1 is a schematic structural diagram of a mobile communication system in the prior art;

2 is a schematic structural diagram of another mobile communication system in the prior art;

3 is a schematic structural diagram of another mobile communication system in the prior art;

4 is a schematic diagram of data flow of IP shunting of a mobile communication system in the prior art; FIG. 5 is a schematic diagram of data flow of IP shunting of another mobile communication system in the prior art; FIG. 6a is another mobile in the prior art; FIG. 6b is a schematic diagram of a data flow of another mobile communication system IP shunting in the prior art; FIG. 6 is a schematic structural diagram of a system and apparatus for transmitting shunt information according to the present invention; A schematic flowchart of a specific embodiment of the present invention for implementing offloading information delivery when performing handover across a mobility management entity;

FIG. 9 is a schematic flow chart of another specific embodiment of the present invention for implementing offloading information transfer when a user performs a handover across a mobility management entity;

FIG. 10 is a schematic flowchart of another specific embodiment of the present invention for implementing offloading information transfer when a user performs a handover across a mobility management entity;

FIG. 11 is a schematic flow chart of a specific embodiment of the present invention for implementing offload information transmission in a location update process. detailed description

The basic idea of the present invention is: in the mobile process, if the mobility management entity is unchanged, that is, the original mobility management entity can be the target mobility management entity, the target mobility management entity obtains the traffic distribution policy according to the saved traffic information. And transmitting the offloading policy to the target local gateway. Otherwise, the original mobility management entity sends the offload information to the target mobility management entity, and the target mobility management entity obtains the offload policy according to the received offload information, and sends the offload policy to the target local gateway. Transmitting the offloading policy.

A method for transmitting the offloading information of the present invention is as follows: In the mobile process, the target mobility management entity obtains the offloading policy according to the obtained offloading information, and transmits the obtained offloading policy to the target local gateway.

Here, the moving process may be a handover process or a location update process, and the location update process may be a routing area update process, or a tracking area update process, or a location area update process, or the like.

Here, the offload information includes one or more of the following information: a subscriber number, a billing identifier, and a split contract. The traffic distribution policy includes one or more of the following information: user number, accounting identifier, and traffic distribution identifier. The traffic diversion policy may be obtained by the target mobility management entity according to the traffic distribution information, or according to the traffic distribution information and the local policy, and the information included in the traffic distribution policy may be identical or different from the information included in the traffic distribution information.

The off-sale contract indicates whether the access point (APN, Access Point Name) and/or the Closed Subscriber Group (CSG) of the network connection support the offloading, where the APN may be the APN currently being used, or may not be currently The APN used, or whether the current user is authorized to be able to offload the APN. For example, whether the APN of the PDN connection currently in use is allowed to be offloaded, etc. The offloading identifier is used to indicate whether the current bearer or the connection can be offloaded. The user number or the charging identifier can also be used to indicate whether the current bearer or connection can be offloaded, and can also be used for billing of the offloaded data.

For example, if the offload contract in the offloading information and/or in the target mobility management entity The local policy allows the current APN to be offloaded, and the obtained offload identifier indicates that the current bearer or connection can be offloaded.

The method specifically includes: during the moving process, the original mobility management entity determines whether it can be the target mobility management entity, and if yes, the original mobility management entity obtains the traffic according to the saved traffic information. Transmitting and transmitting the offloading policy to the target local gateway; otherwise, the original mobility management entity sends the offloading information to the target mobility management entity, and the target mobility management entity receives the offloading information, and according to the received The traffic distribution information obtained is obtained by the traffic distribution policy, and the obtained traffic distribution policy is transmitted to the target local gateway.

Specifically, the original mobility management entity determines, according to the target network information sent by the terminal, such as the routing area identifier or the wireless side network element identifier, whether it can communicate with the target wireless side network element or the home base station, and if so, judges that it can be the target. a mobility management entity, otherwise, the original mobility management entity, from the mobility management entity capable of communicating with the target wireless side network element or the home base station, according to the target network information transmitted by the terminal, such as the routing area identifier or the wireless side network element identifier, A mobility management entity is selected as the target mobility management entity. The specific process selected is prior art and will not be described here.

Specifically, in the mobile process, the original mobility management entity carries the offload information in a dedicated message sent by itself to the target mobility management entity to send the offload information to the target mobility management entity.

In actual application, for the handover process, the original mobility management entity carries the offload information in the relocation forward request sent to the target mobility management entity; for the location update process, the original mobility management entity moves through the target to the target The traffic response message is carried in the context response message of the sex management entity.

After the target mobility management entity transmits the offloading policy to the target local gateway, the target mobility management entity determines, according to the obtained offload information and/or the local policy saved by itself, after obtaining the offloading information. Whether the current bearer or connection can be split, if If yes, the offloading policy is obtained according to the offloading information and/or the local policy, and the offloading policy is transmitted to the target local gateway. Otherwise, the target mobility management entity does not transmit the offloading policy to the target local gateway.

Specifically, when the offloading information includes the offloading contract, the target mobility management entity determines whether the current bearer or connection is based on the offloaded subscription included in the obtained offloaded information, or according to the offloaded subscription and the local policy. Ability to divert. When the offloading information is not included in the offloading information, the target mobility management entity may obtain the shunting information according to the obtained shunting information and the local policy saved by itself, or the local policy saved according to itself. , to determine whether the current bearer or connection can be offloaded.

The traffic offloading policy may be obtained by the target mobility management entity according to the obtained traffic distribution information, or may be obtained according to the local policy after obtaining the traffic distribution information, and may also be saved according to the acquired traffic distribution information after acquiring the traffic distribution information. Local strategy is obtained. Specifically, the traffic distribution information may be directly obtained by the traffic distribution information. When the traffic distribution includes the traffic distribution subscription, the traffic distribution subscription of the traffic distribution information may be replaced by the corresponding traffic distribution identifier to obtain a corresponding traffic distribution policy, or the traffic distribution information may be directly obtained. The shunt signing in the middle is removed, and the corresponding shunting strategy is obtained. The corresponding traffic distribution identifier is obtained by the local policy, and the traffic distribution identifier is added to the obtained traffic distribution information, so that a traffic distribution policy including all the information in the traffic distribution identifier and the traffic distribution information can be obtained.

The process of the target mobility management entity transmitting the offloading information to the target local gateway is: in the mobile process, the target mobility management entity carries the traffic off policy in a dedicated message that is sent by itself to the target wireless side network element. The offloading policy is transmitted to the target local gateway through the target radio side network element or directly to the target local gateway.

Specifically, in the handover process, the target mobility management entity carries the offloading policy by relocation request or handover request sent to the target radio side network element; in the location update process, the target mobility management entity establishes through the initial context Request or track zone update request, will be offloaded The policy is passed to the local gateway.

In a practical application, the specific implementation process of the target mobility management entity transmitting the offload information to the target local gateway may include the following situations:

For the IP offloading of the mobile communication system as shown in FIG. 5, the target local gateway is set between the target radio side network element and the target mobility management entity, and during the mobile process, the target mobility management entity needs to pass the target local gateway, and The dedicated message, such as the relocation request or the initial context setup request information, is sent to the target radio side network element. In this case, the offload information may be carried in the message sent by the target mobility management entity to the target radio side network element, and the target local gateway is The offload information is intercepted in the message to achieve the purpose of transmitting the offloaded information to the target local gateway.

For any mobile communication system, when the target local gateway is combined with the target wireless side network element, the target wireless side network element and the target local gateway have the same IP address, and the target mobility management entity sends a dedicated message to the target wireless side network element, and the target The local gateway is also received at the same time. At this time, the target mobility management entity can directly send the offload information to the target local gateway by means of a dedicated message.

In addition, for any mobile communication system, the target mobility management entity may transmit the offload information to the target local gateway by using the following method: First, in the mobile process, the target mobility management entity sends a dedicated message to the target radio side network element. And carrying the offloading information, the target radio side network element receives the dedicated message carrying the offloading information, and then sends the offloading information to the target local gateway.

The present invention also provides an apparatus for transmitting the offloading information. As shown in FIG. 3, the apparatus may be a mobility management entity or a part of a mobility management entity, and the apparatus mainly includes: a transmitting unit 711, configured to: During the moving process, the traffic distribution policy is obtained according to the obtained traffic distribution information, and the obtained traffic distribution policy is transmitted to the target local gateway 72.

The device further includes: a receiving unit 712, configured to receive the offload information sent by the original target mobility entity 73 during the moving process; the transmitting unit 711 is further configured to receive according to the The offloading information received by the unit 712 is obtained by the offloading policy, and the obtained offloading policy is transmitted to the target local gateway 72.

The device may further include: a storage unit 713, configured to save the offloading information; the splitting unit may be configured to obtain a shunting policy according to the shunting information saved by the storage unit 713, and obtain a shunting policy The offloading policy is communicated to the target local gateway 72.

Here, the apparatus may further include: a verification unit 714, configured to start, when the current bearer or the connection is capable of offloading according to the offloading information and/or a local policy saved by itself, start the transmitting unit.

Specifically, the verification unit 714 determines, according to the offload information received by the receiving unit 712 or the storage unit 713, and/or the local policy saved by itself, whether the current bearer or connection can be offloaded, and if so, the startup The transmitting unit 711 is configured to enable the transmitting unit 711 to obtain a traffic off policy according to the offloading information and/or the local policy, and transmit the obtained offloading policy to the target local gateway, otherwise, the transmitting unit is not activated. 711.

Specifically, the transmitting unit transmits a traffic off policy to the target local gateway 72 through the target wireless side network element 74 during the moving process, or directly transmits the traffic off policy to the target local gateway 72.

The present invention also provides a system for transmitting the offloading information. As shown in FIG. 7, the system includes: a target mobility management entity 71 and a target local gateway 72, wherein the target mobility management entity 71 includes the foregoing delivery. The device for splitting information may specifically include a transmitting unit 711, a verifying unit 714, and a receiving unit 712 and/or a storage unit 713. The target local gateway is configured to receive a traffic offloading policy transmitted by the transmitting unit of the target mobility management entity. .

The system for transmitting the offload information further includes: an original mobility management entity 73, configured to send the offload information to the target mobility management entity 71 during the moving process.

Specifically, the original mobility management entity 73 is further configured to send, to the target mobility management entity, when determining that the user cannot be the target mobility management entity during the mobile process. Divert information.

Specifically, in the moving process, the original mobility management entity 73 determines whether it can be the target mobility management entity 71, and if not, sends the offload information to the target mobility management entity 71, otherwise, does not send the offload. information.

The system further includes: a target radio side network element 74, configured to receive a offloading policy sent by the transmitting unit 711 of the target mobility management entity 71, and send the received offloading policy to the target local gateway 72. .

Herein, the device and system for transmitting the offloading information provided by the present invention, the specific implementation process of implementing the offloading information transmission in the moving process, has been described in detail in the implementation of the above method, and details are not described herein again.

The target radio side network element 74 may be a base station, or a home base station, or an RNC, or a local gateway, or a offloading functional entity. The original mobility management entity 73 or the target mobility management entity 71 may be an MME, or a Mobile Switching Center (MSC), or a GPRS Service Support Node (SGSN). The target local gateway 72 may be a local service gateway (L-SGW) and a local packet data network gateway (L-PGW), or a separate L-PGW, or a local gateway GPRS support node (L-GGSN, Local Gateway GPRS Support Node). And the local GPRS service support node (L-SGSN), or a separate L-GGSN, may also be a data offload function entity.

It should be noted that the IP offload connection applicable to the present invention may be a local IP access user local network, a local IP access company local network, a local IP access Internet, a traffic offload of Internet services, and a specific IP data offload.

The specific implementation manner of the present invention for transmitting the offload information in the mobile process will be further described below in conjunction with the mobile communication system in the actual application.

Embodiment 1

This embodiment describes a terrestrial radio access network (UTR AN, based on a universal mobile communication system). Universal Terrestrial Radio Access Network, ) The application scenario of the system, the specific process of transferring the traffic information during the mobile process.

For the mobile communication system shown in FIG. 1 and FIG. 5, referring to FIG. 8, the specific process for the user to perform handover across the mobility management entity is as follows:

Step 801: The original radio side network element selects the target radio side network element according to the measurement report reported by the terminal, and determines and initiates the handover process.

Step 802: The original radio side network element sends a relocation request message to the original mobility management entity. Step 803: The original mobility management entity sends a relocation forward request to the target mobility management entity, where the relocation forwarding request carries the offload information.

Here, before sending the relocation forward request to the target mobility management entity, the step may further include the following process: the original target mobility management entity determines according to the target network information of step 802, such as the routing area identifier or the radio side network element identifier. Whether it can communicate with the target wireless side network element, if yes, determine that it can be the target mobility management entity, and determine itself as the target mobility management entity. Otherwise, select a new mobility according to the target network information of step 802. The management entity acts as the target mobility management entity.

In this embodiment, the original target mobility management entity determines that it cannot communicate with the target wireless side network element, and selects the target mobility management entity according to the target network information of step 802, and then, to the selected target mobility management. The entity sends a relocation forward request.

Step 804: The target mobility management entity sends a relocation request message to the target radio side network element, where the relocation request carries the offloading policy.

Specifically, the target mobility management entity determines that the current bearer or the connection can be offloaded according to the offloading subscription in the offloading information and/or the saved local policy, and then the offloading policy is carried in the relocation request message and sent to the target radio side network. yuan.

Step 805: The target local gateway intercepts the offloading policy from the relocation request message in step 804, and the shunt information transmission in the handover process is completed. Step 806: The target radio side network element sends a relocation request acknowledgement message to the target mobility management entity.

Step 807: The target mobility management entity returns a relocation forward response message to the original mobility management entity.

Step 808: The original mobility management entity sends a relocation command to the original wireless side.

In step 809, the subsequent switching process is continued.

Here, the subsequent handover procedure may be a process such as resource release.

Embodiment 2

Referring to FIG. 9, on the basis of the home base station system shown in FIG. 3 and the data flow shown in FIG. 5, when the user performs the handover process of the mobility management entity, the flow of implementing the traffic distribution information is as follows:

Step 901: The original home base station selects the target home base station according to the measurement report reported by the terminal, and determines and initiates the handover process.

Step 902: The original home base station sends a relocation request message to the original mobility management entity via the original home base station gateway.

Step 903: The original mobility management entity sends a relocation forward request to the target mobility management entity, and carries the offload information.

The specific implementation process of this step is the same as step 803.

Step 904: The target mobility management entity sends a relocation request message to the target home base station via the target home base station gateway, and carries the offloading policy.

Here, the target mobility management entity determines, according to the offloading information and/or the local policy saved by itself, that the current bearer or connection can be offloaded, obtains a corresponding offloading policy, and sends the carried by the target home base station gateway to the target home base station. There is a relocation request message that gets the offload policy.

Step 905: The target local gateway intercepts the offload from the relocation request message of step 904. At this point, the shunt information transfer in the current handover process is completed.

Step 906: The target home base station sends a relocation request acknowledgement message to the target mobility management entity via the target home base station gateway.

Step 907: The target mobility management entity returns a relocation forward response message to the original mobility management entity.

Step 908: The original mobility management entity sends a relocation command to the original home base station via the original home base station gateway.

Step 909, continue to perform the subsequent switching process.

Embodiment 3

Referring to FIG. 10, on the basis of the communication system shown in FIG. 1 and the IP offloading shown in FIG. 6, when the user performs handover across the mobility management entity, the specific process of implementing the offload information transmission is as follows: Step 1001, the original wireless side The network element selects the target radio side network element according to the measurement report of the terminal on the terminal, and determines and initiates the S1 handover process;

Step 1002: The original radio side network element sends a handover request message to the original mobility management entity. Step 1003: The original mobility management entity sends a relocation forward request to the target mobility management entity, where the relocation forward request carries the offload information. ;

The specific implementation process of this step is the same as step 803 in the first embodiment.

Step 1004, optionally, the session establishment process is performed between the target mobility management entity and the serving gateway.

Step 1005: The target mobility management entity sends a handover request message to the target radio side network element, where the handover request message carries a traffic off policy;

The specific implementation process of this step is the same as step 804 in the first embodiment.

Step 1006: After receiving the handover request message, the target radio side network element sends the offloading policy carried in the target local gateway to the target local gateway. At this point, the delivery process of the offload information in the current handover process is completed. Step 1007: The target radio side network element sends a handover request acknowledgement message to the target mobility management entity.

Step 1008: The target mobility management entity returns a relocation forward response message to the original mobility management entity.

Step 1009: The original mobility management entity sends a handover command to the original radio side network element. Step 1010: The original radio side network element forwards the handover command to the terminal, and notifies the terminal to perform the handover.

In step 1011, the subsequent switching process is continued.

Embodiment 4

Referring to FIG. 11, on the basis of the communication system shown in FIG. 1, when the terminal performs the location update process, the specific process of implementing the offload information transmission is as follows:

Step 1101: The terminal sends a tracking area update request message to the target mobility management entity via the target radio side network element, and carries the activation identifier.

Step 1102: The target mobility management entity sends a context request message to the original mobility management entity.

Step 1103: The original mobility management entity returns a context response message to the target mobility management entity, and carries the offload information.

Step 1104, optionally, the terminal, the mobility management entity, and the authentication authorization server perform an authentication process;

Step 1105: The target mobility management entity sends a context confirmation message to the original mobility management entity.

Step 1106: The target mobility management entity initiates a bearer modification operation to the core network gateway. Step 1107: Perform a location update process between the target mobility management entity and the authentication authorization server.

Step 1108: Performing a location cancellation between the authentication authorization server and the original mobility management entity Cheng

Step 1009: The target mobility management entity sends an initial context setup request message to the target radio side network element, where the initial context setup request message carries the offload policy, or carries the tracking area update accept message in the initial context setup request message. Diversion strategy.

Here, the specific process is the same as step 804.

Step 1110: The target local gateway intercepts the offloading policy from the initial context setup request message. At this point, during the current location update process, the delivery process of the offload information is completed.

Step 1111: The target radio side network element performs a radio bearer setup process.

Step 1112: The target radio side network element returns an initial context establishment complete message or a radio bearer setup complete message to the target mobility management entity.

Step 1113: Perform a modification bearer between the target mobility management entity and the core network gateway. The above embodiments are all examples in which the mobility management entity changes. If the mobility management entity does not change during the mobility process, the target mobility management entity determines the bearer or the localization policy according to the offload subscription or local policy in the saved traffic information. After the connection can be offloaded, the offloading policy is obtained, and the obtained offloading policy is carried in the relocation request message, and the target local gateway intercepts the offloading policy from the relocation request message, or the target radio side network element receives the heavyweight policy. After the request message is located, the offloading policy is sent to the target local gateway.

In another embodiment, after the terminal moves, the mobility management entity determines whether a change occurs. If the mobility management entity does not change, the mobility management entity determines, according to the offload subscription or the local policy, that the bearer or the connection can be offloaded. The relocation request message carries a traffic offloading policy including a subscriber number or a charging identifier or a traffic distribution identifier to be transmitted to the target local gateway. If the mobility management entity changes, the target mobility management entity may further transmit the traffic distribution policy including the subscriber number or the charging identifier or the traffic distribution identifier to the RAB assignment request message after the routing area update process immediately after the mobile process. Target local gateway.

It should be noted that, in order to simplify the description, the above embodiment only takes the case of FIG. 1 as an example. Clear the way IP split information is transmitted. However, whether it is the system shown in Figure 1, or Figure 2, or Figure 3, whether using the data offloading method shown in Figure 4, or Figure 6a, or Figure 6b, regardless of the UTRAN or E-UTRAN system, regardless of the switching process or In the location update process, the manner in which the traffic distribution information is transmitted during the mobile process is similar to that of the above embodiment, and therefore will not be described again.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included. Within the scope of protection of the present invention.

Claims

Claim

A method for transmitting traffic distribution information, the method comprising: in a moving process, the target mobility management entity obtains a traffic distribution policy according to the obtained traffic distribution information, and transmits the obtained traffic distribution policy to the target local gateway. .

2. The method of communicating split information according to claim 1, wherein the moving process is a handover process or a location update process.

The method for transmitting the offloading information according to claim 1, wherein the offloading information comprises one or more of the following information: a subscriber number, a charging identifier, and a traffic signing; the trafficking policy includes the following information. One or more: User ID > Billing ID, Diversion ID.

The method for transmitting the offloading information according to any one of claims 1 to 3, wherein the method comprises:

During the mobile process, the original mobility management entity determines whether it can be the target mobility management entity;

If yes, the original mobility management entity obtains a traffic off policy according to the saved traffic information, and transmits the obtained traffic distribution policy to the target local gateway;

Otherwise, the original mobility management entity sends the offload information to the target mobility management entity, the target mobility management entity receives the offload information, and then obtains a offload policy according to the received offload information, and obtains the offloaded The policy is passed to the target local gateway.

The method for transmitting the offloading information according to claim 4, wherein the original mobility management entity sends the offloading information to the target mobility management entity, where: the original mobility management entity sends the information to the original mobility management entity. The dedicated information of the target mobility management entity carries the offload information.

The method for transmitting the offloading information according to claim 5, wherein the dedicated message sent by the original mobility management entity to the target mobility management entity is a relocation forwarding message or a context response message.

The method for transmitting the offloading information according to any one of claims 1 to 3, wherein before the target mobility management entity transmits the offloading policy to the target local gateway, the method further includes: the target The mobility management entity obtains a traffic off policy according to the offloaded information and/or the local policy, when the current bearer or the connection can be offloaded according to the obtained offloading information and/or the local policy saved by itself.

The method for transmitting the offloading information according to any one of claims 1 to 3, wherein the target mobility management entity transmits the offloading information to the target local gateway, which is:

During the mobile process, the target mobility management entity carries the offload policy in a dedicated message that is sent by itself to the target radio side network element.

The method for transmitting the offloading information according to claim 8, wherein the dedicated message sent by the target mobility management entity to the target radio side network element is a relocation request message, or a handover request message, or An initial context setup request message, or a tracking area update request message.

An apparatus for transmitting the offloading information, wherein the apparatus comprises: a transmitting unit, configured to obtain a traffic off policy according to the obtained offloading information, and transmit the obtained offloading policy to the target local gateway .

The device for transmitting the offloading information according to claim 10, wherein the device further comprises: a receiving unit, configured to receive the offload information sent by the original target mobility entity during the moving process; The method further includes: obtaining the offloading policy according to the offloading information received by the receiving unit, and transmitting the obtained offloading policy to the target local gateway.

The device for transmitting the offloading information according to claim 10, wherein the device further comprises: a storage unit, configured to save the offloading information; the shunting unit is further configured to: according to the storage unit The saved traffic information is obtained during the mobile process, and the obtained traffic distribution policy is transmitted to the target local gateway.

13. Apparatus for transmitting shunt information according to claim 11 or 12, characterized in that The device further includes: a verification unit, configured to: when the current bearer or the connection can be offloaded according to the offloading information and/or the local policy saved by itself, start the transmitting unit.

The device for transmitting the offloading information according to claim 10, wherein the transmitting unit is further configured to: transmit, by the target wireless side network element, the offloading policy to the target local gateway during the moving process, or directly A traffic offload policy is transmitted to the target local gateway.

A system for transmitting offloading information, the system comprising: a target mobility management entity and a target local gateway; wherein

The target mobility management entity includes a transmitting unit, configured to obtain a traffic distribution policy according to the obtained traffic distribution information, and transmit the obtained traffic distribution policy to the target local gateway; And receiving a traffic offloading policy transmitted by the transmitting unit of the target mobility management entity.

The system for transmitting the offloading information according to claim 15, wherein the system further comprises: an original mobility management entity, configured to send the offloading information to the target mobility management entity during the moving process;

The system for transmitting the offloading information according to claim 16, wherein the original mobility management entity is further configured to: when it is determined that the user cannot be the target mobility management entity during the moving process, The offload information is sent to the target mobility management entity.

The system for transmitting the offloading information according to any one of claims 15 to 17, wherein the system further comprises: a target radio side network element, configured to receive, by the transmitting unit of the target mobility management entity, The offloading policy sends the received offloading policy to the target local gateway.