Routing spectrum allocation method based on multi-thread technology

Abstract

The present invention discloses a routing spectrum allocation method based on the multi-thread technology and belongs to the technical field of routing. According to the method, data links are simultaneously established for multiple service requests by using multiple threads. The units of resources occupied by the threads form a resource set, and the constraint condition of resources occupied by the threads changes continuously. The relationship among resources occupied by each single thread has a plurality of dimensions. Therefore, resources in the network can be fully utilized, and the establishment time delay of data links is reduced. The user experience quality is improved.

Description

technical field [0001] The invention relates to the technical field of routing, in particular to a routing spectrum allocation method realized by using multi-thread technology. Background technique [0002] In traditional network interconnection, IP packet network and optical network operate independently of each other. The development of IP layer cluster routing technology has greatly improved the caching capability and switching capacity of backbone routers. Elastic optical network not only realizes large-capacity, The ultra-long-distance transmission also has the characteristics of low delay. Through the flexible use of spectrum, the resource utilization rate in the network is improved. However, the separate maintenance and management of the IP packet network and the optical network cause waste of resources and make the network The complexity and cost of construction and maintenance are getting higher and higher. In the prior art (YANG H, ZHANG J, ZHAO Y, et al. Performa...

AI Technical Summary

Problems solved by technology

The central SDN controller analyzes the business granularity and current network resources to determine which resources in the IP layer and the optical layer are more suitable for providing services for new business requests, so as to improve operation and maintenance and resource utilization efficiency, reduce network operating costs, and improve cross-layer service Recovery and quick response to service requests. However, due to the sudden and uncertain characteristics of IP data services, when the traffic volume of the IP layer surges, the bursty services at the IP layer are diverted to the optical layer. This requires the optical network to The requested optical path can be quickly established, but in the optical network, when a large number of service requests burst out in a short time, although the spectrum resources are sufficient, the optical network controller cannot establish an optical path for the service requests in time due to the large number of service requests, and when the service requests are queued The delay gradually increases, which seriously affects the delay performance of the network

The degradation of network delay performance will cause service connection rerouting or abnormal signaling response during communication, which will affect the reliability of signal transmission and indirectly lead to the decrease of network throughput, thereby reducing the utilization of network resources; if the network delay performance cannot meet the requirements, the quality of experience (Quality of Experience, QoE) of users will not be improved, and at this time, only increasing the bandwidth cannot fundamentally solve the above problems

[0003] Huawei technology pre-sets the wavelength allocation table on the optical network unit. According to the service provider where the optical network unit is located, the wavelength information corresponding to the service provider where the optical network unit is located is obtained through the wavelength allocation table. According to the service provider where the optical network unit is located The wavelength information corresponding to the provider, sending or receiving optical signals, simplifies the wavelength allocation process, reduces the wavelength allocation delay, and improves the quality of user experience; when ZTE performs wavelength routing allocation for services in the current network topology, the deletion reaches the predetermined value Threshold nodes or optical fibers, dynamically adjust the network topology, so that in the case of large traffic, the service that is ranked behind is getting smaller and smaller due to the available network topology, so the speed of wavelength routing allocation for the business will also be faster. The faster it is, the time complexity of the overall algorithm is reduced, the time of wavelength routing is reduced, the efficiency of the algorithm is improved, and the quality of user experience is improved. In scenes with a large amount of traffic, the delay in establishing the optical path is relatively long

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