A Path Resource Allocation Method Based on QoS Discrimination in Hybrid Networks

Abstract

A path resource allocation method based on QoS differentiation in a hybrid network. First, by distinguishing the service quality levels that different path resources in the network can provide, a QoS hierarchical graph is established, and then different resources are used according to different QoS requirements of service requests. The allocation strategy, and the physical resources and logical resources of the hybrid network are considered in a unified manner, which not only deeply integrates the resources of each layer, but also reduces the complexity of the method. It can also dynamically adjust the QoS requirements of the service to ensure the success rate of resource allocation. Achieve path resource allocation that satisfies multiple types, multiple granularities, and multiple QoS requirements, so that different network path resource information can be shared according to different QoS requirements.

Description

technical field [0001] The invention relates to a data communication transmission technology, in particular to a path resource allocation method based on QoS distinction in a hybrid network. Background technique [0002] At present, commonly used network path resource allocation methods include the wavelength hierarchical graph method of the optical layer and the constrained shortest path algorithm of the electrical layer. However, this method cannot meet the allocation requirements of logical path resources; the constrained shortest path algorithm of the electrical layer is a method of calculating the shortest path from the source node to the other nodes in the directed graph under certain constraints. The existing hybrid network path resource allocation method adopts the cascading / separated resource allocation method and the cross-layer resource allocation method. The cascaded / separated resource allocation method uses different resource allocation methods for multi-layer r...

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Problems solved by technology

[0002] At present, commonly used network path resource allocation methods include the wavelength hierarchical graph method of the optical layer and the constrained shortest path algorithm of the electrical layer. However, this method cannot meet the allocation requirements of logical path resources; the constrained shortest path algorithm of the electrical layer is a method of calculating the shortest path from the source node to the other nodes in the directed graph under certain constraints

The existing hybrid network path resource allocation method adopts the cascading / separated resource allocation method and the cross-layer resource allocation method. The cascaded / separated resource allocation method uses different resource allocation methods for multi-layer resources, and the physical path The path is calculated separately, and the resource allocation of the grooming path between the layers is not considered uniformly. The resources between the layers lack the necessary coordination, which is not conducive to adapting to the dynamic changes of the mixed network resource status; the core idea of ​​​​the cross-layer resource allocation method is Each layer is not designed independently. By comprehensively considering the resource parameters of adjacent layers or between several layers, the resource parameters of each layer are allocated through a cross-layer decision-making module by using the correlation between network layers. The resource parameters of each layer are coordinated and integrated, but the variety of resources makes this method technically complex, and the resource allocation method is fragmented, especially for services with huge differences in QoS requirements and cross-QoS domain transmission requirements, path resource allocation calculations Complicated and difficult to dynamically adjust QoS requirements

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