Optimization method based on multiple spare cross layer resources

Abstract

The invention discloses an optimization method based on multiple spare cross layer resources. According to the characteristics of paths through which a single hop service and a multiple hop service pass on a GMPLS (generalized multiprotocol label switching) layer, only WDM (wavelength division multiplex) layer protection is provided for the single hop service to ensure the reliable restoration of the single hop service when a WDM layer fails; a GMPLS layer protection path is provided for the multiple hop service necessarily, a multiple spare idea is introduced, and an idle and unprotected method is provided for a multiple hop high level service (HS) to cope with the simultaneous failure of a router and an optical fiber link, and ensure the timely restoration of the high level service when a node or a link fails; a multiple hop middle level service (MS) can bear less pack loss and longer time delay relatively to the high level service, only GMPLS layer protection is provided for a multiple hop low level service (LS), and the used GMPLS layer resources and the used WDM layer resources are reduced; and the maximal share of network resources is realized, the utilization ratio of the network resources is improved, the configuration cost of the network resources is reduced, and the optimum configuration of the network resources is realized.

Description

technical field [0001] The invention belongs to the field of communication, and relates to a method for optimizing cross-layer resources that can be used for multiple backups. It is applicable to multi-layer networks in which the resources of each layer have bearer relationships and require independent allocation, and are required to meet the survivability characteristics of different services, and optimize Conditions of network resources (such as GMPLS over WDM network). Background technique [0002] The development of the Internet and the surge of data services have prompted the modern communication network to develop towards a multi-technology, multi-layer, multi-service, and high-bandwidth multi-layer network, and the survivability design of the network has also been highlighted. Resource optimization is one of the most critical aspects of network survivability. It is an urgent problem to be solved by allocating the resources of each layer in the network reasonably and i...

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: using the Interlayer BRS method for all services accessing the network improves the maximum sharing of network resources, but does not treat the services differently, which increases the redundancy of resource allocation; the Interlayer BRS method itself has shortcomings, that is, in The optical layer regards the optical path carrying the spare resources of the MPLS layer as an additional service (capable of being preempted and unprotected). Upper layer service interruption

This method is aimed at the case of single link failure, and the mapping between the two-layer links will be more complicated when the number of network nodes increases, and it does not consider the different survivability requirements of the business

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