Method and device for dynamic service grooming and processing in elastic optical network

Abstract

The embodiment of the invention provides a dynamic service grooming processing method and device in an elastic optical network, and the method comprises the steps: building a virtual network topological structure, and initializing a network busy state value; receiving a service request and taking the service request as a sub-service request, converging the sub-service requests which have the samesource and destination nodes and meet conditions into a current service request, and carrying out weight and bandwidth marking on the sub-service request; updating a network busy state value based onthe network state of the current virtual network topology structure, and determining whether the current service request belongs to a high-priority service request or not; if so, determining a virtuallink for the current service request by using a first service grooming strategy; if not, determining a virtual link for the current service request by using a second service grooming strategy; and performing routing and spectrum allocation on the determined virtual link in a physical network topology. According to the invention, the service requests with different requirements can be intelligently groomed based on the network state, and the service dredging performance is improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a dynamic service grooming processing method and device in an elastic optical network. Background technique [0002] As an emerging and promising optical network architecture in optical fiber communication systems, EON (Elastic Optical Networks) network has greatly improved the traditional WDM (Wavelength Division Multiplexing, Wavelength Division Multiplexing, Use) the transmission capacity and transmission rate of the network. Elastic optical networks are widely used in the field of communication technology, for example, in satellite communication. In practice, due to the large capacity of satellite communication services, long transmission distances, and limited resources on each satellite node, the volume and weight requirements of communication equipment are very strict, which requires data services to be transmitted as much as possible during the transmission of eac...

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Problems solved by technology

[0004] However, the inventors have found that the existing processing method for dynamic service routing in elastic optical networks is based on the virtual network topology mapped to the physical network topology, and prioritizes incoming service requests to established virtual links in the virtual network topology (The virtual link is the link in use), and the virtual link may not be the shortest path for the arriving service request

Moreover, although the existing business grooming method has a good effect on improving the performance of the network's blocking rate, it does not consider the type of business request. In practice, different types of business requests have different requirements on link performance. The impact of capabilities is also different, especially for satellite communications, different functional satellite nodes have very different requirements for service types, sizes, delay sensitivity, transmission rates, etc., making the existing business grooming methods unable to meet various requirements. Business requests with different requirements affect the performance of business grooming

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