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Method and device for dispatching multipriority traffic

A scheduling device and priority technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problems of increasing the FIFO filling rate, large transmission jitter and delay of high-priority services, and reduce transmission jitter, Guarantee QoS and ensure the effect of effective implementation

Inactive Publication Date: 2012-10-17
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will increase the filling rate of the FIFO, resulting in a delay in the transmission of subsequent high-priority services
From an external point of view, that is, in the case of low-priority burst services, the transmission jitter of high-priority services will be relatively large

Method used

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  • Method and device for dispatching multipriority traffic
  • Method and device for dispatching multipriority traffic
  • Method and device for dispatching multipriority traffic

Examples

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Embodiment Construction

[0016] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0017] image 3 A schematic diagram showing an internal output port of a multi-service transmission device part (board) according to a specific embodiment of the present invention. image 3 The structure in the figure 2 A low-priority virtual service queue 301 is added on the basis of the internal output port of the multi-transmission service device shown in , and other functional structures are the same as figure 2 Similarly, a credit-based traffic scheduler 202 is still used at the output port 112 of the switch. The mapper 12 corresponding to the output port 112 encapsulates service data packets and / or filling data packets with different priorities of the output port 112 into a data stream. The mapper 12 includes a queue for storing service data packets and / or filling data packets of different priorities to be encapsulated. Preferably, ...

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Abstract

The invention provides a new scheduling scheme: a virtual traffic queue to be transported in the low priority traffic type is established at the output port of multi-traffic transmission equipment, the priority of the virtual traffic queue is lower than that of all the actual traffic queues; insufficient traffic data at the output port are used for consuming the credit in a traffic scheduler to reduce transmission jitter of the high priority traffics. The method and the device of the invention effectively reduce transmission jitter of the high priority traffics in the multi-traffic transmission equipment, thus ensuring effective realization of QoS.

Description

technical field [0001] The invention relates to multi-service transmission equipment, in particular to the scheduling of multi-priority services in the multi-service transmission equipment. Background technique [0002] For the application of Ethernet services based on TDM transmission, the multi-service transmission equipment (or its board) is usually designed to include an Ethernet switch and multiple mappers (mapper), each mapper and each output port of the switch corresponding, such as figure 1 As shown, the multi-service transmission device 10 in the figure includes an Ethernet switch 11, the Ethernet switch has a plurality of input ports 111 and a plurality of output ports 112; Mapper 12. The Ethernet switch 11 switches input Ethernet frames (or Ethernet data packets), and puts each frame into a corresponding output port 112 . For a multi-service transmission device, the output port is a virtual port (or called an internal port). Such as figure 1 As shown, each ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/869
Inventor 王立峰
Owner ALCATEL LUCENT SAS
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