A method and system for implementing WRR-based otn serialized balanced scheduling

Abstract

The invention, which belongs to the optical transport network (OTN) serialization balanced scheduling field, discloses a weighted-round-robin (WRR)-based realization method and system for OTN serialization balanced scheduling. The method comprises: under the circumstances that a rate capacity of a maximum rate level service is used as a total capacity t and a rate capacity of a minimum rate level service is used as a basic scheduling unit b, a total number n of unified serialized scheduling units is obtained based on the t and b; according to the n, a total weight factor W(n) in the WRR is set; according to the b, a serialized basic scheduling unit number needed by each service is obtained, and a weight factor corresponding to each serialized basic scheduling unit number is set based on the WRR; a count value needed by each service is calculated by using the WRR; and according to the count value, the corresponding unified serialized scheduling unit is distributed to the service. According to the invention, the unified serialized basic scheduling unit is easy to repair; the universality is high; and the logic resource wasting is reduced.

Description

technical field [0001] The present invention relates to the field of OTN (Optical Transport Network, Optical Transport Network) serialized balanced scheduling, in particular to a method and system for realizing OTN serialized balanced scheduling based on WRR (Weighted Round Robin, weighted round robin scheduling algorithm). Background technique [0002] With the continuous evolution of OTN technical standards, the types of services that OTN requires to carry are becoming more and more flexible, such as ODUk (Optical Channel Data Unit), ODUflex (Flexible Rate Optical Digital Unit), CBR (Constant Bit Rate, fixed bit rate), etc., There are more and more mapping / demapping methods; which in turn leads to more and more complicated scheduling design when carrying various services in ASIC (Application Specific Integrated Circuit) or FPGA (Field Programmable Gate Array, Field Programmable Gate Array) design . [0003] In view of the above situation, if the scheduling units are desig...

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Problems solved by technology

[0002] With the continuous evolution of OTN technical standards, the types of services that OTN requires to carry are becoming more and more flexible, such as ODUk (Optical Channel Data Unit), ODUflex (Flexible Rate Optical Digital Unit), CBR (Constant Bit Rate, fixed bit rate), etc., There are more and more mapping / demapping methods; which in turn leads to more and more complicated scheduling design when carrying various services in ASIC (Application Specific Integrated Circuit) or FPGA (Field Programmable Gate Array, Field Programmable Gate Array) design

[0003] In view of the above situation, if the scheduling units are designed separately for OTN granules of different rate levels, there will be a wide variety of scheduling units, which are not only difficult to maintain, but also poor in portability; if various business scheduling is processed in parallel, it will take up more logic resources, and have high requirements for clock synchronization

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