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Data link detection method, device and system, controller and gateway

A data link and detection method technology, applied in the field of communication, can solve problems such as unproposed solutions, unclear control plane logic and user plane logic, and achieve the effect of improving the quality of detection

Inactive Publication Date: 2015-02-25
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] Aiming at the problem of unclear control plane logic and user plane logic in data link detection between GTP endpoints in related technologies, no effective solution has been proposed so far

Method used

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  • Data link detection method, device and system, controller and gateway
  • Data link detection method, device and system, controller and gateway
  • Data link detection method, device and system, controller and gateway

Examples

Experimental program
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Embodiment 1

[0080] Figure 8 It is a flow chart of the data link detection method according to the preferred embodiment 1 of the present invention. The network elements implementing the data link detection method mainly include an SDN controller, UGW1 and UGW2, wherein UGW1 is equivalent to the first UGW, and UGW2 is equivalent to the first UGW. The GTP endpoint, and the GTP endpoint is a UGW, that is, the GTP endpoint is a second UGW. In this embodiment, the SDN controller maintains the state machine of the echo request message and the echo response message, and also maintains the context information of the GTP user plane. The context information includes clock t1 and the corresponding maximum time interval T1; clock t2 and the corresponding maximum time interval T2; counter n1 and the corresponding maximum number of times N1, and other possible context information, such as: sequence number (Sequence Number, SN for short) and other information. Among them, the maximum value of timer t1...

Embodiment 2

[0092] Figure 9 It is a flow chart of the data link detection method according to the preferred embodiment 2 of the present invention, and this method is an optimization of the method shown in the preferred embodiment 1.

[0093] In related technologies, the GTP keep-alive keeps the GTP link alive by bidirectionally sending an echo request message / echo response message, because the two GTP endpoints are two different endpoints. Considering the current scenario, the generation, sending and receiving point of the echo request / echo response message are all one point, that is, the SDN controller. Therefore, as long as the SDN controller receives the message sent by itself, it can prove the smoothness of the link.

[0094] Therefore, on the basis of preferred embodiment 1, messages in one direction can be omitted, and only messages in one direction can be reserved, that is, as Figure 9 As shown, only the following steps are included:

[0095] In steps S902-906, the SDN control...

Embodiment 3

[0099] Figure 10 It is a flow chart of the data link detection method according to the preferred embodiment 2 of the present invention. In this embodiment, one of the two endpoints of the GTP is a traditional GTP endpoint, such as an eNB or a traditional S-GW / P-GW, and the other endpoint is a UGW. In this way, the maintenance of the GTP link needs to be maintained by sending echo request / echo response messages bidirectionally, instead of unidirectionally as in the second preferred embodiment. That is, the context information of the GTP user plane on the UGW side is maintained by the SDN controller, and the GTP context information of the traditional GTP endpoint is maintained according to related technologies. Operation of traditional GTP endpoints, that is, message sending between traditional GTP endpoints and UGW, see figure 2 corresponding instructions. The operation of UGW, that is, the message between UGW and SDN controller, and the operation of SDN controller can be ...

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Abstract

Disclosed are a data link detection method, apparatus, system, controller, and gateway. The method comprises: an SDN controller sending a GTP request message to a first UGW, and instructing the first UGW to send the GTP request message to another GTP endpoint in a GTP user plane signaling format; the SDN controller receiving a GTP response message from the first UGW, and detecting a data link between the first UGW and the another GTP endpoint according to the GTP response message, the GTP response message being corresponding to the GTP request message. The present invention solves the problem in the prior art that logic of a user plane and logic of a control plane are unclear during detection of a data link between GTP endpoints, thereby improving the clarity of the logic of the user plane and the clarity of the logic of the control plane.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a data link detection method, device, system, controller and gateway. Background technique [0002] The OpenFlow (OF) protocol is a forwarding / control separation protocol proposed by Stanford University in 2008. The external control plane entity uses the OF protocol to control the forwarding plane equipment to realize various forwarding logics, and the main function of the forwarding plane equipment is It is to perform controlled forwarding according to the flow table issued by the OF controller. The OF protocol further evolved and became 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, such as the use of SDN to realize the evolution of the packet system (Evolved Packet System, referred to as EPS) / General Packet Radio Service (G...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/66H04W24/00H04L45/02
CPCH04L12/4633H04L41/12H04L41/40H04L45/02H04L61/2592
Inventor 毕以峰王静周娜汪军
Owner ZTE CORP
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