CN102457931A - Method and system for controlling data route - Google Patents
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Abstract
The invention discloses a method for controlling a data route. The method comprises the following steps of: when local access connection is established and after the network connection type of the local access connection is judged, the network connection type information is transmitted to a base station by a core network mobile management unit; when a direct data channel between the base station and a local gateway is established, the network connection type information is transmitted to the local gateway by the base station; and the data route is controlled by the local gateway according to the network connection type information. The invention also correspondingly discloses a system for controlling the data route. According to the method and the system disclosed by the invention, the data route control can be carried out on the local gateway by only needing to perform configuration of the network connection type, thereby the configuration specific to a user on the local gateway can be avoided and the operation is simplified; and in addition, the method and the system are easily realized.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a data routing control method and system.
Background
With the continuous increase of the air interface rate and the increase of data users, the data volume of future users will show explosive increase, which inevitably will cause impact on the existing core network, and the existing core network element has to be expanded to provide satisfactory service for users. Considering that most of the increased data is caused by internet services, a mobile operator wants to perform local internet data distribution on the basis of not changing the existing network, so that a large amount of data is prevented from impacting a core network and the user requirements can be met, and therefore, the concept of local access is provided.
The introduction of Home base stations (HNBs, Home nodebs) expands the application range of local access. The femtocell is used as a dedicated resource of some users, is deployed in private places such as homes, groups, companies or schools and the like, and is mainly used for providing higher service rate for the users, reducing the cost required by using high-rate services and making up for the defects of coverage of the existing distributed cellular wireless communication system. The user can access other IP devices in the home network and IP devices in the enterprise network through the home base station, and this application is also called local access because the data stream is not transmitted through the core network. The 3GPP standards organization defines Local access functions including selective IP traffic offload (SIPTO) applied to access of the Internet network and Local IP access (LIPA) applied to access of Local network IP devices.
In order to implement the local access function, a gateway performing a data offloading function needs to be added in the network, fig. 1 is a schematic diagram of a data flow path between the local access and the access of a traditional core network, and the data offloading gateway may be installed in conjunction with or near (i.e., external to) the wireless side network element, or in conjunction with or near (i.e., external to) the femtocell gateway. For a user supporting local access, a traditional core network access data path and a local access data path can be established at the same time. As shown in fig. 1, for the connection of local access, the local access data path is from the terminal to the wireless side network element to the data distribution gateway, and data transmission does not pass through the core network. In order to realize local access of the terminal to other IP devices of the home network or to the internet, two local access connections may be established, the first local access data path directly accessing the internet (an internet IP connection, i.e. a SIPTO connection). The second local access data path directly accesses other IP devices of the home network (home network IP connection, i.e. LIPA connection).
Fig. 2 is a schematic diagram of a system architecture for performing local access, in which a data offloading gateway may be integrated with or separately installed from a wireless side network element, and the architecture takes a home base station as an example. The home base station sends the user uplink local access data received from the home base station from an interface between the home base station and the data distribution gateway, and the data distribution gateway also sends the user downlink local access data received from the interface, wherein the interface has GTP-C and GTP-U protocol stacks and has no standardized name. And the local access connection is used by the control plane network element to the data distribution gateway through the service gateway for management. The packet data gateway is used for forwarding core network data. And the downlink data on the core network is sent through the home base station, the service gateway and the packet data gateway. The interfaces S1-MME and S1-U, S5 in the architecture are standardized interfaces, and the invention is not described in detail.
From the home base station's local access application point of view, it is mainly used for home, business support access to local networks and the Internet or other specific IP networks. At the needs of the home, business manager, only certain users may be allowed access to a class of networks, e.g. only LIPA access or only SIPTO access. The user can distinguish the data accessed to the LIPA or the SIPTO through the PDN connection, but the local gateway only plays a forwarding role, and the local gateway cannot play a monitoring role for the behavior that the user maliciously accesses the SIPTO network through the LIPA PDN connection.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a data routing control method and system, which can avoid the configuration specific to the user on the local gateway, simplify the operation, and are easy to implement.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a data routing control method, comprising:
when the local access connection is established, the core network mobility management unit judges the network connection type of the local access connection and then sends the network connection type information to the base station;
when the base station establishes a direct data channel with a local gateway, the base station sends the network connection type information to the local gateway;
and the local gateway performs data routing control according to the network connection type information.
The network connection type is as follows: a network connection for LIPA applications and/or a network connection for SIPTO applications.
The core network mobility management unit is a mobility management entity MME or a serving GPRS support node SGSN.
And a signaling interface between the base station and the core network mobility management unit is an S1 interface or an Iu interface.
The local gateway performs data routing control according to the network connection type information as follows: and the local gateway distinguishes the data flow direction according to the network connection type and controls the sending of the data on the network connection.
A data routing control system, comprising: a core network mobility management unit, a base station and a local gateway; wherein,
the core network mobility management unit is used for judging the network connection type of the local access connection when the local access connection is established and sending the judged network connection type information to the base station;
the base station is used for sending the network connection type information to the local gateway when a direct data channel between the base station and the local gateway is established;
and the local gateway is used for carrying out data routing control according to the network connection type information.
The network connection type is as follows: a network connection for LIPA applications and/or a network connection for SIPTO applications.
The core network mobility management unit is a mobility management entity MME or a serving GPRS support node SGSN.
And a signaling interface between the base station and the core network mobility management unit is an S1 interface or an Iu interface.
The local gateway performs data routing control according to the network connection type information as follows: and the local gateway distinguishes the data flow direction according to the network connection type and controls the sending of the data on the network connection.
According to the data routing control method and system, when a user accesses the local area, the local gateway controls the data routing by distinguishing the network connection type, and in practical application, the data routing control can be performed only by configuring the network connection type on the local gateway, so that the configuration specific to the user on the local gateway can be avoided, the operation is simplified, and the method and system are easy to implement.
Drawings
Fig. 1 is a schematic diagram of data flow paths for local access and conventional core network access;
FIG. 2 is a diagram of a system architecture for performing local access;
FIG. 3 is a flow chart of a data routing control method according to the present invention;
fig. 4 is a schematic flow chart of a data routing control method according to embodiment 1 of the present invention;
fig. 5 is a schematic flow chart of a data routing control method according to embodiment 2 of the present invention;
fig. 6 is a schematic flow chart of a data routing control method according to embodiment 3 of the present invention;
fig. 7 is a flowchart illustrating a data routing control method according to embodiment 4 of the present invention.
Detailed Description
The basic idea of the invention is: when the user accesses the local, the local gateway controls the data route by differentiating the network connection type.
Fig. 3 is a schematic flow chart of a data routing control method of the present invention, and as shown in fig. 3, the method includes:
step 301: when the local access connection is established, the core network mobility management unit judges the network connection type of the local access connection and then sends the network connection type information to the base station.
Here, the network connection types are generally: a network connection for LIPA applications and/or a network connection for SIPTO applications.
It should be noted that the core network mobility management unit may be a mobility management entity MME or a serving GPRS support node SGSN. The signaling interface between the base station and the core network mobility management unit may be an S1 interface or an Iu interface.
Step 302: and the base station sends the network connection type information to the local gateway when establishing a direct data channel between the base station and the local gateway.
Step 303: and the local gateway performs data routing control according to the network connection type information.
Here, the local gateway performs data routing control according to the network connection type information as follows: and the local gateway distinguishes the data flow direction according to the network connection type and controls the sending of the data on the network connection.
In order to realize data routing control, provision for data routing is configured in advance in the local gateway. For example, LIPA access is only possible for data on a network connection for LIPA applications, and external routing is not allowed. SIPTO access is only possible for data on a network connection for SIPTO applications, no internal routing is allowed. No routing restrictions are made on data on the network connection that can be used for both LIPA and SIPTO applications.
The invention also provides a data routing control system, which comprises: a core network mobility management unit, a base station and a local gateway; wherein,
the core network mobility management unit is used for judging the network connection type of the local access connection when the local access connection is established and sending the judged network connection type information to the base station;
the base station is used for sending the network connection type information to the local gateway when a direct data channel between the base station and the local gateway is established;
and the local gateway is used for carrying out data routing control according to the network connection type information.
The network connection type is as follows: a network connection for LIPA applications and/or a network connection for SIPTO applications.
The core network mobility management unit is a mobility management entity MME or a serving GPRS support node SGSN.
And a signaling interface between the base station and the core network mobility management unit is an S1 interface or an Iu interface.
The local gateway performs data routing control according to the network connection type information as follows: and the local gateway distinguishes the data flow direction according to the network connection type and controls the sending of the data on the network connection.
The following describes the embodiments in further detail with reference to the accompanying drawings.
Example 1
This embodiment is described by taking a user initiating an attach process as an example, and fig. 4 is a schematic flow chart of a data routing control method according to embodiment 1 of the present invention, as shown in fig. 4, the method includes:
step 401: the terminal initiates an attachment process, an APN which a user wants to access a network is carried in an attachment request message, and the home base station sends information such AS CSG ID, an access mode, a local gateway address and the like of the base station to a core network mobility management unit through AS information in the process of forwarding the attachment request message.
Step 402: and the core network mobility management unit judges whether the user requests local access or not according to the content reported by the message and the user subscription, and judges the network connection type of the local access if the local access is requested. The network connection types of the local access include: a network connection for LIPA applications, a network connection for SIPTO applications, or both.
Step 403, step 406: and when the core network mobility management unit judges that local access connection needs to be established, a data channel between the local gateway and the core network service gateway is established according to the local gateway address carried by the base station, and the data channel is used for triggering a paging process when local access downlink data arrives.
Step 407: and the core network mobility management unit carries the network connection type of the local access in the initial context establishment request message when indicating the home base station to establish the radio bearer.
Step 408: the home base station establishes an RRC connection with the terminal.
Step 409: after the RRC connection is established, the home base station returns an initial context establishment response message to the mobility management unit.
Step 410: under the condition that the home base station and the local gateway are separately arranged, the home base station informs the local gateway of the network connection type through a session creation request message. If the home base station and the local gateway are co-located, this notification is an internal operation. In this embodiment, an interface where a GTP protocol stack exists between the hnb and the local gateway is taken as an example for description, and the principle of the case where interfaces of other protocols (such as PMIP) exist between the hnb and the local gateway is similar, and no specific message is limited.
Step 411: the local gateway returns a create session response message.
Step 412: and each network element equipment completes the steps required by the subsequent attachment process.
In order to realize data routing control, provision for data routing is configured in advance in the local gateway. For example, LIPA access is only possible for data on a network connection for LIPA applications, and external routing is not allowed. SIPTO access is only possible for data on a network connection for SIPTO applications, no internal routing is allowed. No routing restrictions are made on data on the network connection that can be used for both LIPA and SIPTO applications.
Example 2
In this embodiment, a process of a user requesting PDN connection establishment is taken as an example for explanation, and fig. 5 is a schematic flow diagram of a data routing control method according to embodiment 2 of the present invention, as shown in fig. 5, the method includes:
step 501: the terminal initiates a PDN connection establishment request process, APN which a user wants to access a network is carried in a request message, and the home base station sends information such AS CSG ID, an access mode, a local gateway address and the like of the base station to a core network mobility management unit through AS information in the process of forwarding a service request message which enables the user to enter a connection state.
Step 502: and the core network mobility management unit judges whether the user requests local access or not according to the content reported by the message and the user subscription, and judges the network connection type of the local access if the local access is requested. The network connection types of the local access include: a network connection for LIPA applications, a network connection for SIPTO applications, or both.
Step 503 step 506: and when judging that the local access connection needs to be established, the core network mobility management unit establishes a data channel between the local gateway and the core network service gateway according to the local gateway address carried by the base station for triggering the paging process when the local access downlink data arrives.
Step 507: and the core network mobility management unit carries the network connection type of the local access in the bearer establishment request message when indicating the home base station to establish the radio bearer.
Step 508: the home base station establishes an RRC connection with the terminal.
Step 509: after the RRC connection is established, the home base station returns a bearing establishment response message to the mobility management unit.
Step 510: under the condition that the home base station and the local gateway are separately arranged, the home base station informs the local gateway of the network connection type through a session creation request message. This notification is an internal operation if the home base station and the local gateway are co-located. In this embodiment, an interface where a GTP protocol stack exists between the hnb and the local gateway is taken as an example for description, and the principle of the case where interfaces of other protocols (such as PMIP) exist between the hnb and the local gateway is similar, and no specific message is limited.
Step 511: the local gateway returns a create session response message.
Step 512: and each network element equipment completes the steps required by the process of subsequently requesting PDN connection establishment.
In order to realize data routing control, provision for data routing is configured in advance in the local gateway. For example, LIPA access is only possible for data on a network connection for LIPA applications, and external routing is not allowed. SIPTO access is only possible for data on a network connection for SIPTO applications, no internal routing is allowed. No routing restrictions are made on data on the network connection that can be used for both LIPA and SIPTO applications.
Example 3
This embodiment takes a case where a GPRS network and a core network mobility management unit are S4SGSN as an example for explanation, and fig. 6 is a schematic flow chart of a data routing control method according to embodiment 3 of the present invention, as shown in fig. 6, the method includes:
step 601: the terminal requests PDP context activation, APN which the user wants to access the network is carried in the request message, and the home base station sends information such AS CSG ID, access mode, local gateway address and the like of the base station to a core network mobility management unit through AS message in the process of forwarding the service request message which enables the user to enter a connection state.
Step 602: and the core network mobility management unit judges whether the user requests local access or not according to the content reported by the message and the user subscription, and judges the network connection type of the local access if the local access is requested. The network connection types of the local access include: a network connection for LIPA applications, a network connection for SIPTO applications, or both.
Step 603, step 606: and when judging that the local access connection needs to be established, the core network mobility management unit establishes a data channel between the local gateway and the core network service gateway according to the local gateway address carried by the base station for triggering the paging process when the local access downlink data arrives.
Step 607: and the core network mobility management unit carries the network connection type of the local access in the wireless access bearer establishment request message when indicating the home base station to establish the wireless bearer.
Step 608: the home base station establishes an RRC connection with the terminal.
Step 609: after the RRC connection is established, the home base station returns a response message of establishing the wireless access bearing to the mobility management unit.
Step 610: under the condition that the home base station and the local gateway are separately arranged, the home base station informs the local gateway of the network connection type through a session creation request message. If the home base station and the local gateway are co-located, this notification is an internal operation. In this embodiment, an interface where a GTP protocol stack exists between the hnb and the local gateway is taken as an example for description, and the principle of the case where interfaces of other protocols (such as PMIP) exist between the hnb and the local gateway is similar, and no specific message is limited.
Step 611: the local gateway returns a create session response message.
Step 612: and each network element equipment completes the steps required by the subsequent PDP context activation process.
In order to realize data routing control, provision for data routing is configured in advance in the local gateway. For example, LIPA access is only possible for data on a network connection for LIPA applications, and external routing is not allowed. SIPTO access is only possible for data on a network connection for SIPTO applications, no internal routing is allowed. No routing restrictions are made on data on the network connection that can be used for both LIPA and SIPTO applications.
Example 4
This embodiment will be described by taking as an example a case where the GPRS network and the core network mobility management unit are Gn/Gp SGSN. Fig. 7 is a schematic flow chart of a data routing control method according to embodiment 4 of the present invention, and as shown in fig. 7, the method includes:
step 701: the terminal requests PDP context activation, APN which the user wants to access the network is carried in the request message, and the home base station sends information such AS CSG ID, access mode, local gateway address and the like of the base station to a core network mobility management unit through AS message in the process of forwarding the service request message which enables the user to enter a connection state.
Step 702: and the core network mobility management unit judges whether the user requests local access or not according to the content reported by the message and the user subscription, and judges the network connection type of the local access if the local access is requested. The network connection types of the local access include: a network connection for LIPA applications, a network connection for SIPTO applications, or both.
Step 703, step 704: and when judging that the local access connection needs to be established, the core network mobility management unit establishes a data channel between the local gateway and the core network service gateway according to the local gateway address carried by the base station for triggering the paging process when the local access downlink data arrives.
Step 705: and the core network mobility management unit carries the network connection type of the local access in the wireless access bearer establishment request message when indicating the home base station to establish the wireless bearer.
Step 706: the home base station establishes an RRC connection with the terminal.
Step 707: after the RRC connection is established, the home base station returns a response message of establishing the wireless access bearing to the mobility management unit.
Step 708: under the condition that the home base station and the local gateway are separately arranged, the home base station informs the local gateway of the network connection type through a request message for creating the PDP context. If the home base station and the local gateway are co-located, this notification is an internal operation. In this embodiment, an interface where a GTP protocol stack exists between the hnb and the local gateway is taken as an example for description, and the principle of the case where interfaces of other protocols (such as PMIP) exist between the hnb and the local gateway is similar, and no specific message is limited.
Step 709: the home gateway returns a create PDP context response message.
Step 710: and each network element equipment completes the steps required by the subsequent PDP context activation process.
In order to realize data routing control, provision for data routing is configured in advance in the local gateway. For example, LIPA access is only possible for data on a network connection for LIPA applications, and external routing is not allowed. SIPTO access is only possible for data on a network connection for SIPTO applications, no internal routing is allowed. No routing restrictions are made on data on the network connection that can be used for both LIPA and SIPTO applications.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. A method for controlling data routing, the method comprising:
when the local access connection is established, the core network mobility management unit judges the network connection type of the local access connection and then sends the network connection type information to the base station;
when the base station establishes a direct data channel with a local gateway, the base station sends the network connection type information to the local gateway;
and the local gateway performs data routing control according to the network connection type information.
2. The method of claim 1, wherein the network connection type is: a network connection for LIPA applications and/or a network connection for SIPTO applications.
3. The method of claim 1, wherein the core network mobility management unit is a Mobility Management Entity (MME) or a Serving GPRS Support Node (SGSN).
4. The method of claim 1, wherein a signaling interface between the base station and the core network mobility management unit is an S1 interface or an Iu interface.
5. The method of claim 1, wherein the local gateway performs data routing control according to the network connection type information by: and the local gateway distinguishes the data flow direction according to the network connection type and controls the sending of the data on the network connection.
6. A data routing control system, the system comprising: a core network mobility management unit, a base station and a local gateway; wherein,
the core network mobility management unit is used for judging the network connection type of the local access connection when the local access connection is established and sending the judged network connection type information to the base station;
the base station is used for sending the network connection type information to the local gateway when a direct data channel between the base station and the local gateway is established;
and the local gateway is used for carrying out data routing control according to the network connection type information.
7. The system of claim 6, wherein the network connection type is: a network connection for LIPA applications and/or a network connection for SIPTO applications.
8. The system according to claim 6, wherein said core network mobility management unit is a mobility management entity MME or a serving GPRS support node SGSN.
9. The system according to claim 6, wherein a signaling interface between said base station and said core network mobility management unit is an S1 interface or an Iu interface.
10. The system of claim 6, wherein the local gateway performs data routing control according to the network connection type information by: and the local gateway distinguishes the data flow direction according to the network connection type and controls the sending of the data on the network connection.
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| CN201010517451.4A CN102457931B (en) | 2010-10-22 | 2010-10-22 | A kind of data route control method and system |
| PCT/CN2011/079893 WO2012051892A1 (en) | 2010-10-22 | 2011-09-20 | Method and system for data routing control |
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| CN201010517451.4A CN102457931B (en) | 2010-10-22 | 2010-10-22 | A kind of data route control method and system |
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| WO2014026560A1 (en) * | 2012-08-15 | 2014-02-20 | 中兴通讯股份有限公司 | Method and device for local gateway address updating |
| US9706393B2 (en) | 2012-08-15 | 2017-07-11 | Zte Corporation | Method and device for local gateway address updating |
| WO2016078375A1 (en) * | 2014-11-21 | 2016-05-26 | 中兴通讯股份有限公司 | Data transmission method and device |
| CN107277882A (en) * | 2016-04-07 | 2017-10-20 | 中国移动通信有限公司研究院 | A kind of data routing method, device and base station |
| CN107277866A (en) * | 2016-04-07 | 2017-10-20 | 中国移动通信有限公司研究院 | A kind of data service switching method, device, base station and system |
| CN110213798A (en) * | 2019-07-17 | 2019-09-06 | 京信通信系统（中国）有限公司 | A kind of shunt method and device based on Femto gateway |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102457931B (en) | 2016-06-29 |
| WO2012051892A1 (en) | 2012-04-26 |
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