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Permanent virtual channel scheduling method for carrying variable bit ratio business

A variable bit rate, permanent virtual technology, applied to electrical components, transmission systems, etc., to achieve the effect of simple implementation

Inactive Publication Date: 2006-10-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a PVC scheduling method for carrying VBR services, which is used to solve the problem in the prior art that transmission delay control cannot be performed according to different VBR service types carried on PVCs

Method used

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  • Permanent virtual channel scheduling method for carrying variable bit ratio business
  • Permanent virtual channel scheduling method for carrying variable bit ratio business
  • Permanent virtual channel scheduling method for carrying variable bit ratio business

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Embodiment 1: A minimum cell rate parameter is added to the configuration parameters of the PVC.

[0032] see figure 1 , is the flow chart of the steps of Embodiment 1, specifically comprising the following steps:

[0033] Step S11, adding a minimum cell rate parameter (MCR) in the configuration parameters of each PVC, and setting a specific MCR value according to the VBR service type carried by the PVC;

[0034] For example: if the PVC is AAL5PVC, the VBR service carried by it is the transmission of operation and maintenance information, and the delay requirement is not high (that is, the delay can be relatively large), then the corresponding MCR can be set smaller; if the PVC is AAL2 PVC, its The VBR service carried is the transmission of voice data packets, which has high requirements for delay (that is, the delay must be relatively small), and the corresponding MCR must be set larger to meet the delay transmission requirements of voice services;

[0035] Step S12,...

Embodiment 2

[0040] Embodiment 2: A maximum transmission delay parameter is added to the configuration parameters of the PVC.

[0041] see figure 2 , is the flow chart of the steps of Embodiment 2, specifically comprising the following steps:

[0042] Step S21, adding a maximum transmission delay parameter in the configuration parameters of each PVC, and setting a specific maximum transmission delay value according to the VBR service type carried by the PVC;

[0043] For example: if the PVC is an AAL5 PVC, the VBR service carried by it is the transmission of operation and maintenance information, and the delay requirement is not high, and a larger delay value can be set; if the PVC is an AAL2 PVC, the VBR service carried by it is the transmission of voice Data packets have high requirements for delay, so a small delay value must be set to meet the delay transmission requirements of voice services;

[0044] Step S22, start the PVC scheduling process; the communication chip starts to sche...

Embodiment 3

[0050] Embodiment 3: Establish a PVC type and minimum cell rate mapping relationship table.

[0051] see image 3 , is the flow chart of the steps of embodiment three, specifically comprising the following steps:

[0052] Step S31, establishing a PVC type and minimum cell rate (MCR) mapping relationship table;

[0053] The type of PVC can be determined according to the type of VBR service it bears;

[0054] For example: the PVC queue in the communication chip carries two types of VBR services in total. One type of VBR service is to transmit operation and maintenance information, so all PVCs that transmit operation and maintenance information are set as "type 1"; The transmission does not have high requirements for delay (that is, the delay can be relatively large), and its corresponding MCR can be set smaller; another VBR service is to transmit voice data packets, then set all PVCs that transmit voice data packets to "Type 2”; since the voice service has high requirements o...

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Abstract

The method includes procedures: based on service type in different variable bit rate (VBR) carried by permanent virtual circuit (PVC) to determine PVC type; establishing association relation between PVC indifferent types and minimum cell rate (MCR); when current PVC to be dispatched in idle, based on PVC type the current PVC belongs to and the said association relation to obtain corresponding MCR; dispatching current PVC by using obtained MCR. Advantages are: controlling transmission delay of service effectively; reducing transmission bandwidth of physical port utilized by PVC if PVC is in idle.

Description

technical field [0001] The present invention relates to a scheduling method for a permanent virtual channel (Permanent Virtual Channel, PVC), in particular to a scheduling method for a PVC carrying a variable bit rate (Variable Bit Rate, VBR) service. Background technique [0002] In the prior art, when the communication chip polls and schedules the PVC queue, since the hardware physical port of the communication chip can support limited bandwidth, the constant bit rate (Constant Bit Rate, CBR) carried by the scheduled PVC queue is required. The sum of the peak cell rate (Peak Cell Rate, PCR) of the service or the average cell rate (Sustainable Cell Rate, SCR) of the carried variable bit rate (Variable Bit Rate, VBR) service cannot exceed the hardware physical port of the communication chip Otherwise, the Asynchronous Transfer Mode (ATM) scheduling controller in the communication chip will be overloaded, causing the scheduling capability to drop sharply. [0003] In the pri...

Claims

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Application Information

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IPC IPC(8): H04L29/02
Inventor 董效阔
Owner HUAWEI TECH CO LTD
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