Optical network energy-saving routing method capable of flexibly adjusting reserved-type service transmission bandwidth

Abstract

The invention relates to an optical network energy-saving routing method capable of flexibly adjusting reserved-type service transmission bandwidth. The method comprises the following steps: 1) a network constructing a route weight matrix according to link and transmission time slot occupation situations; 2) selecting a transmission path and time slot, of which the energy consumption is minimum, for a reserved-type service according to the route weight matrix; and 3) re-routing a request having only one service on an optical path to an optical path capable of time slot overlapping transmission with other services according to the service duration time and bandwidth usage rate of the optical path, and adjusting transmission time slot inner bandwidth in the optical path to support service energy-saving transmission according to reserved-type duration time and bandwidth requirements. The method can enable a plurality of services to be transmitted on few light paths in a concentrated manner to the greatest extent under the condition of meeting time slot transmission requirements and optical path bandwidth, and adopts a bandwidth adjustment strategy to re-route the service on the optical path having only one service to other established optical paths for transmission, thereby reducing the number of the occupied optical paths, reducing the number of ports needed in the optical path and the number of optical amplifiers, and reducing energy consumption of the whole optical network.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and relates to an optical network energy-saving routing method for flexibly adjusting reserved service transmission bandwidth. Background technique [0002] With the rapid development of high-speed services such as cloud computing, video conferencing, and multimedia distance education, the bandwidth resources of the network are becoming increasingly tense. In order to meet the high-speed and high-bandwidth needs of users, network operators must not build more "broad" information transmission channels. , Broad channels also mean a sharp increase in network transmission energy consumption. The rapidly growing energy consumption of network transmission has become the main factor restricting the development of the network. Facing the pressure of resource reduction and global climate change, it is urgent to reduce the energy consumption of network transmission and realize the green...

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Problems solved by technology

[0004] Based on the idea of ​​heuristic algorithm, some researchers have proposed a new resource allocation mode for the uncertain start and end times of the transmission of flexible time bandwidth reservation services, which divides the service duration into many independent Time slots, each time slot independently selects the transmission path, s

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