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IP address distribution method, controller and gateway device in SDN-EPS

A gateway device, IP address technology, applied in the field of mobile communication, can solve the problem of IP address management not being able to be carried out

Inactive Publication Date: 2015-08-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0044] The technical problem to be solved in the present invention is to provide a method for allocating IP addresses in an SDN-EPS network to solve the problem that IP address management in an SDN-EPS network cannot be performed due to the separation of the control plane and the forwarding plane

Method used

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  • IP address distribution method, controller and gateway device in SDN-EPS
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  • IP address distribution method, controller and gateway device in SDN-EPS

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0138] Such as Figure 5 As shown, this embodiment provides a method for allocating IP addresses in an SDN-EPS network, which is applied to a software-defined network SDN controller, and includes the following steps:

[0139] S101: The SDN controller issues flow table information for capturing address allocation signaling to the gateway device;

[0140] Wherein, the gateway device includes: a unified gateway UGW that performs a function of a serving gateway SGW, and / or a UGW that performs a function of a packet data network gateway PGW.

[0141] Wherein, the SDN controller sends the flow table information one or more times when the user equipment UE initiates the attachment process or completes the attachment, so as to ensure that the gateway device can capture the address allocation signaling; the The flow table information includes one or more pieces of flow table information used to capture different address allocation signaling.

[0142] The flow table information includ...

application example 1

[0221]This application example is aimed at the delayed allocation of IPv4 addresses and the S5 / 8 interface between the SGW and the PGW is based on the GTP protocol. Wherein, the IP address type of the terminal UE may be IPv4 or IPv4v6. A scene can be a roaming scene or a non-roaming scene. SGW / UGW and PGW / UGW can belong to the same network operator, and the controller controls the two network elements at the same time; or the controller only controls PGW / UGW, and SGW is a traditional network element. This is software-defined network and traditional network interoperability. scene. Interworking scenarios are further divided into interworking scenarios within a network and interworking scenarios involving roaming between multiple networks. In the above multiple situations, the implementation mechanism of the present invention is the same, and here it is only introduced that the invention can be used in these scenarios.

[0222] The delayed allocation of the IPv4 address means...

application example 2

[0242] This application example is aimed at the allocation of IPv6 address prefixes, and the S5 / 8 interface between the SGW and the PGW can be the GTP protocol or the PMIP protocol. Wherein, the IP address type of the terminal UE may be IPv6 or IPv4v6. A scene can be a roaming scene or a non-roaming scene. SGW / UGW and PGW / UGW can belong to the same network operator, and the controller controls these two network elements at the same time; or the controller only controls PGW / UGW, and SGW is a traditional network element. This is the interworking between software-defined networks and traditional networks. scene. Interworking scenarios are divided into interworking scenarios within a network and interworking scenarios involving roaming between multiple networks. In the above multiple situations, the implementation mechanism of the present invention is the same, and here it is only introduced that the invention can be used in these scenarios.

[0243] The above IPv6 address pref...

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Abstract

The invention discloses an IP address distribution method, a controller and a gateway device in an SDN-EPS. The method applied to the SDN controller comprises the steps that the SDN controller sends flow table information used for capturing an address distribution signaling downwards to the gateway device, receives the address distribution signaling captured by the gateway device according to the flow table information and responses to the address distribution signaling. The distribution method and system, the controller and the gateway device which are provided by the invention solve the problem that IP address management is unavailable in the SDN-EPS network because a control surface and a forwarding surface are separated.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method for allocating IP addresses in a Software Defined Network (SDN for short)-Evolved Packet System (EPS for short) network, a controller and a gateway device. Background technique [0002] In the existing technology, the OpenFlow protocol is a forwarding / control separation protocol proposed by Stanford University in 2008. The external control plane entity uses the OpenFlow protocol to control the forwarding plane equipment to realize various forwarding logics, and the main function of the forwarding plane equipment is Controlled forwarding according to the flow table issued by the OpenFlow controller. The OpenFlow protocol has further evolved into a software-defined network (Software Defined Network, referred to as SDN) technology, that is, software programming can be used on the control plane to implement various complex network applications, for example, using ...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L12/66H04L12/741H04L45/74
CPCH04L49/254H04L61/5007
Inventor 毕以峰汪军
Owner ZTE CORP
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