Bandwidth adjustment method and system

A bandwidth adjustment and bandwidth technology used in the field of communications

Inactive Publication Date: 2012-07-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no related work on the control plane

Method used

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  • Bandwidth adjustment method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Combine figure 1 , figure 2 Explain the operation of increasing bandwidth between node A and node B. It is assumed here that an ODUflex unidirectional connection with a bandwidth of 2.5G (denoted as Con1) passes through link AB; and Con1 occupies #1, #2 time slots; #3, #4, and #5 time slots are idle time slots. Now due to business requirements, it is necessary to increase the bandwidth of 2.5G. Here are the steps to implement:

[0072] In step 201, node A receives a request for adding 2.5G bandwidth to the Con1 connection.

[0073] Step 202: The control plane of node A constructs a PATH message in RSVP-TE signaling.

[0074] Here, node A sets the corresponding object according to the following requirements:

[0075] The value of BA in the ADMIN_STATUS object is set to 01;

[0076] The value filled in the service bandwidth field in the Traffic Parameters in the SENDER_TSPEC object is set to 5G;

[0077] Then node A sends the PATH message to node B.

[0078] Step 203: After recei...

Embodiment 2

[0084] Combine figure 1 , image 3 Describe the operation of reducing bandwidth between node A and node B. It is assumed here that an ODUflex unidirectional connection with a bandwidth of 5G (denoted as Con2) passes through link AB; and Con2 occupies #1, #2, #3, #4 time slots, and #5 time slot is an idle time slot. Now due to business needs, 2.5G bandwidth needs to be reduced. The following are the implementation steps:

[0085] Step 301: Node A receives a request to reduce 2.5G bandwidth for Con2 connection.

[0086] Step 302: The control plane of node A constructs a PATH message in RSVP-TE signaling. Here, node A needs to set the corresponding object according to the following requirements:

[0087] The value of the BA flag in the ADMIN_STATUS object is set to 10;

[0088] The value filled in the service bandwidth field in Traffic Parameters in the SENDER_TSPEC object is set to 2.5G;

[0089] Then node A sends the PATH message to node B.

[0090] Step 303: After receiving the above...

Embodiment 3

[0095] Combine figure 1 , Figure 4 Explain the operation of increasing bandwidth between node A and node D. It is assumed here that there is an ODUflex bidirectional connection Con1 from A to D with a bandwidth of 2.5G between A, B, C, and D, and Con1 occupies the #1, #2 time slots on the links AB, BC, and CD. Now due to business requirements, it is necessary to increase the bandwidth of 2.5G; and suppose that #8 and #9 timeslots are added on link AB, #5 and #7 timeslots are added on link BC, and # is added on link CD. 3. #4 time slot. The following are the implementation steps:

[0096] In step 401, node A receives a request for adding 2.5G bandwidth to Con1 connection.

[0097] Step 402: The control plane of node A constructs a PATH message in RSVP-TE signaling. Here, node A needs to set the corresponding object according to the following requirements:

[0098] The value of the BA field bit in the ADMIN_STATUS object is set to 01;

[0099] The value filled in the service bandwi...

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Abstract

The invention discloses a bandwidth adjustment method and a bandwidth adjustment system, wherein the bandwidth adjustment method comprises the following steps: a control plane of a head node of a service initiates a negotiation for adjusting bandwidths among all nodes on a service connection path through a signaling message; and the control plane of each node on the service connection path notifies a time slot resource to be adjusted to a transmitting plane of the current code, wherein the transmitting plane is used for starting a G.HAO protocol to execute a flexible optical data unit (ODUflex) bandwidth adjustment operation. According to the bandwidth adjustment method and the bandwidth adjustment system, disclosed by the invention, a signaling protocol of the control plane is extended, so that the G.HAO protocol established based on ITU-T (International Telecommunication Union Telecommunication Standardization Sector) is supported, and therefore the automatic control of ODUflex bandwidth lossless adjustment is realized.

Description

Technical field [0001] The present invention relates to the field of communications, in particular to a method and system for bandwidth adjustment. Background technique [0002] With such as ETH (Ethernet, Ethernet), FC (Fiber Channel, Fibre Channel), CPRI (Common Public Radio Interface), GPON (Gigabit-Capable PON, Gigabit Passive Optical Network), etc. The application of business interface, the existing OTN (Optical Transport Network, Optical Transport Network) container and the traditional mapping method (AMP (Asynchronous Mapping Procedure, Asynchronous Mapping Procedure) and BMP (Bit-synchronous Mapping Procedure, Bit-synchronous Mapping Procedure) have been Can not meet the OTN full-service bearer requirements. In 2007, ITU-T proposed a flexible transport container ODUflex (flexible optical data unit) concept, which put forward new ideas for the bearer of IP services and future services. In the same year, data clock separation was proposed The new GMP (Generic Mapping Proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/911
Inventor 鲍远林付锡华
Owner ZTE CORP
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