Route establishing method, controller and mobility management entity

A technology for managing entities and controllers, applied in connection management, electrical components, wireless communication, etc., can solve problems such as unproposed solutions, and achieve the effect of reducing network interaction signaling

CN104684044AInactive Publication Date: 2015-06-03ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-06-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses a path establishment method, a controller and an MME, said method comprising: the controller receives user location information sent by a mobility management entity (MME); the controller determines a new anchor gateway and issues a flow table to the new anchor gateway and to an original anchor gateway, said flow table being used for establishing a new routing channel and for establishing a forwarding channel between the new anchor gateway and the original anchor gateway; the controller, by means of a control message, notifies the MME to trigger an access point (APN) packet data network (PDN) connection establishment process, and directs the MME to directly respond to a PDN connection establishment request of an APN initiated by a UE.
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Description

technical field

[0001] The present invention relates to the related technical fields of software-defined network technology and mobile core network offloading, and specifically relates to a method for establishing a path, a controller, and a Mobility Management Entity (MME). Background technique

[0002] The OpenFlow protocol adopts a forwarding / control separation architecture. The external control plane entity uses the OpenFlow protocol to control the forwarding plane device to implement various forwarding logics. The main function of the forwarding plane device is to perform controlled forwarding according to the flow table delivered by the OpenFlow controller. Its behavior It is standardized: after receiving a message, take out the L2 / L3 / L4 related field value of its header, use it as a keyword to search the flow table, and after matching an entry, process the message according to the instruction set in the entry content Fields are processed, and then forwarded to a logic...

Examples

Embodiment approach 1

[0068] Image 6 Embodiment 1 of the present invention specifically includes the following steps:

[0069] Step 601: Uplink data or signaling sent by the user will trigger the UE to initiate a service request process, and the UE sends a service request message to the MME. When forwarding the service request message, the base station sends the base station ID identifying the user location and / or the TAI information configured by the base station to the MME.

[0070] Step 602: The MME establishes a corresponding radio bearer according to the session information saved in the context. The MME sends the address and TEID of the old SGW to the base station in the radio bearer establishment request message. The base station sends the user plane address and TEID of the eNB to the MME in the radio bearer setup response message.

[0071] Step 603: The MME sends a modify bearer request message to the controller, and the message carries user location information, such as eNB ID and TAI. ...

Embodiment approach 2

[0082] Figure 7 The second embodiment of the present invention specifically includes the following steps:

[0083]Step 701: A tracking area update request message is initiated when the user moves to an area outside the tracking area list. When forwarding the service request message, the base station sends the base station ID identifying the user location and / or the TAI information configured by the base station to the MME.

[0084] Step 702: The MME sends a modify bearer request message to the controller, and the message carries user location information, such as eNB ID and TAI.

[0085] Step 703: The controller determines whether to select a new UGW to serve the user according to the user location information and the APN subscription information. If the user's APN subscription allows diversion, then a new anchor gateway can be selected.

[0086] Step 704: The controller sends a flow table to the new UGW to establish a user data forwarding channel between the new UGW and t...

Embodiment approach 3

[0094] Figure 8 The third embodiment of the present invention specifically includes the following steps:

[0095] Step 801: The source base station finds that the user has moved to the edge of the service area through wireless signal detection, then starts the target base station selection process, selects the target base station for the user, and sends a handover message to the target base station, instructing the target base station to reserve wireless resources. This process It is called the handover preparation phase.

[0096] Step 802: After the radio resources are reserved, the target base station sends a path switching request message to the MME, indicating that the user will move to the target base station, and requests the core network to update the data link.

[0097] Step 803: The MME sends a modify bearer request message to the controller, and the message carries user location information, such as eNB ID and TAI.

[0098] Step 804: The controller determines whet...