Submarine Cable Branching Node Placement Under Bandwidth Constraints
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Solution Overview
Problem
Existing submarine cable networks face challenges in optimizing the location of branching units and cable landing stations while maintaining quality of service requirements and minimizing costs, particularly due to varying bandwidth needs and risks associated with seabed topography and ocean environments.
Innovation Solution
A system and method utilizing a weighted edges Steiner minimum tree process to determine optimized geographical locations of branching nodes and cable paths, considering factors like laying cost, repair rates, and geodesics, to minimize cumulative costs and enhance resource efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of optical fibers in submarine cables is increased to meet growing bandwidth demands, then the data transmission capacity is improved, but the cost of cable deployment increases
Solution Approach 1:
The patent optimizes cable parameters by determining the minimum required bandwidth capacity for each cable edge based on actual network traffic demands and QoS requirements, rather than uniformly increasing capacity across all cables. This allows the system to meet growing bandwidth demands while avoiding unnecessary over-provisioning and associated costs.
2Adaptability or versatility
If branching nodes are added to the network to improve connectivity and bandwidth distribution, then the network flexibility and service quality are improved, but the complexity of network deployment and maintenance increases
Solution Approach 1:
The patent performs preliminary optimization of branching node locations using the weighted edges Steiner minimum tree process during the network planning phase. By pre-calculating optimal positions based on predicted traffic patterns and geographic constraints, the system achieves high network flexibility while minimizing deployment complexity and maintenance burden.
3Ease of manufacture
If cable paths are routed through areas with better geographical conditions to reduce laying costs, then the deployment cost is reduced, but the reliability of cable operation may be affected by environmental risks
Solution Approach 1:
The patent transforms the cable path selection problem into a weighted optimization problem where each geographic region is assigned a weight combining both laying cost and reliability factors. The weighted edges Steiner minimum tree algorithm then determines optimal paths that balance cost reduction with acceptable reliability levels, rather than simply avoiding all risky areas.
4Ease of manufacture
If the total length of submarine cables is reduced to minimize deployment costs, then the cumulative cost is reduced, but the ability to meet bandwidth requirements between distant terminal nodes deteriorates
Solution Approach 1:
The patent segments the network into multiple cable edges connected through optimally positioned branching nodes. This segmentation allows the total cable length to be reduced by using intermediate nodes, while the bandwidth capacity requirement is maintained through proper capacity allocation to each segment based on actual traffic demands and QoS requirements.
Data Source
AI summary
A system and a method for optimizing a cable system in a telecommunication network Includes the steps of: receiving a position of each of a plurality of terminal nodes and a minimum bandwidth requirement associated with an operation of the telecommunication network including the plurality of terminal nodes and a plurality of branching nodes, wherein the telecommunication network is arranged to facilitate communication among the plurality of terminal nodes via at least one of the plurality of branching nodes; determining, between adjacent pairs of nodes of terminal nodes or branching nodes, a distance and a bandwidth capacity of a cable edge between each adjacent pair; and providing an optimized geographical location of the branching nodes and an optimized bandwidth capacity of each cable edge in which the telecommunication network being deployed with the branching nodes and the cable edges meets a quality of service associated with the minimum bandwidth requirement.