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A control plane bandwidth adjustment processing method

A bandwidth adjustment and control plane technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problems of adjustment failure, no control plane processing mechanism, etc., to achieve the effect of improving the success rate

Inactive Publication Date: 2016-08-24
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For end-to-end ODUflex connections, adjustment failures may occur during the bandwidth adjustment process, but currently there is no corresponding control plane processing mechanism for failed adjustments

Method used

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  • A control plane bandwidth adjustment processing method
  • A control plane bandwidth adjustment processing method

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The method in this embodiment is applicable to the process when a node on an LSP (Label Switched Path, Label Switched Path) performs a bandwidth adjustment operation:

[0028] The head node of the LSP carries the bandwidth and the number of time slots to be adjusted in the signaling message, as well as the re-signaling identifier; Notify the first node of the number of timeslot information when the bandwidth does not match the adjusted timeslot;

[0029] After receiving the signaling message carrying the heavy signaling identifier, the nodes on the LSP other than the head node judge that if the adjusted bandwidth does not match the adjusted time slot, then send a bandwidth adjustment failure message to the head node of the LSP , and carrying time slot number information in the bandwidth adjustment failure message;

[0030] After receiving the bandwidth adjustment failure message, the head node performs bandwidth adjustment again according to the time slot number inform...

Embodiment 2

[0051] In this embodiment, the retry limiting condition is the number of retries as an example for illustration. Such as figure 1 As shown, the operation of the service head node on the LSP is as follows figure 1 shown, including the following steps:

[0052] Step 201, the first service node receives the connection bandwidth adjustment request, and sets the maximum number of retries;

[0053] This request is triggered by the management plane.

[0054] Step 202, judging whether the current number of retries is less than the maximum number of retries, if yes, execute step 203, otherwise execute step 212;

[0055] Step 203, the head node sends the bandwidth adjustment signaling, for example, through the Path (path) message, which carries the heavy signaling identifier and the bandwidth and the number of time slots to be adjusted;

[0056] The number of time slots here may be the number of time slots that need to be adjusted initially by the first node, or may be the number of...

Embodiment 3

[0067] to combine figure 1 , figure 2 Describe the processing when a failure occurs in the process of increasing the bandwidth between node A and node Z. Such as figure 2 As shown, it is assumed that there is an ODUflex one-way connection with a bandwidth of 35G between A and Z, which is denoted as Con1, and this connection occupies 27 time slots in both the ODU1 network and the ODU2 network. Now due to business needs, it is necessary to increase the bandwidth of 2.5G (that is, the increased bandwidth is 37.5G); and assuming that 2 time slots are added to the ODU1 network and 3 time slots are added to the ODU2 network, the G.HAO protocol can be satisfied requirements. The processing of the control plane includes the following steps:

[0068] Step 301, node A receives a request to increase the bandwidth of 2.5G for the Con1 connection;

[0069] In this embodiment, it is assumed that the number of adjustment retries preset by node A is 3 times.

[0070] Step 302, the con...

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Abstract

The invention discloses a control plane bandwidth adjustment processing method, which can improve the success rate of bandwidth adjustment. The method includes: the head node of the LSP carries the bandwidth to be adjusted, the number of time slots, and the heavy signaling identifier in the signaling message; the nodes on the LSP except the head node receive After the signaling message, determine if the adjusted bandwidth does not match the adjusted time slot, then send a bandwidth adjustment failure message to the head node of the LSP, and carry time slot number information in the bandwidth adjustment failure message; After receiving the bandwidth adjustment failure message, the head node performs bandwidth adjustment again according to the time slot number information, or cancels the bandwidth adjustment operation. The present invention enables the control plane to ensure the success of bandwidth adjustment through the negotiation of time slot number information in the case of ODUflex (GFP) connection bandwidth adjustment failure, and improves the success rate of bandwidth adjustment without affecting customer services.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a processing method for lossless adjustment of control plane bandwidth in an OTN (Optical Transport Network, optical transport network). Background technique [0002] In order to realize OTN full-service bearer, ITU-T proposed the concept of flexible transport container ODUflex (Flexible Rate Optical Digital Unit), which enables OTN to efficiently carry full-service including IP and maximize line bandwidth utilization. Currently, ITU-T defines two forms of ODUflex: one is ODUflex based on Constant Bit Rate (CBR) service, the rate can be arbitrary, and CBR service is encapsulated into this ODUflex through synchronous mapping; the other One is the ODUflex based on the packet service. The rate of this ODUflex is N times that of the HO ODU (High Order Optical Data Unit, High Order Optical Data Unit) time slot. The packet service is encapsulated into the ODUflex through the GFP (Ge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/917H04L47/76
CPCH04L47/762
Inventor 鲍远林
Owner ZTE CORP
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