Distributed Control Modules for SDN Flow Path Optimization
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Solution Overview
Problem
Current telecommunications networks face challenges in managing dynamic and variable information transfer across distributed networks with autonomous routing domains, leading to inconsistent Quality of Service (QoS) and Quality of Experience (QoE) due to the decoupling of control and data planes, especially in Software Defined Networks (SDNs), which complicates network configuration and reactivity.
Innovation Solution
A distributed control method and device that dynamically creates multiple flow exchange paths by reconfiguring transfer means such as routers and switches, using mechanisms like Deep Packet Inspection and OpenFlow, to optimize QoS and QoE by modifying routing rules, encapsulating packets, and orchestrating virtual machines for reliable, secure, and efficient flow transfers between local and remote access networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a centralized control plane is deployed in Software Defined Networks, then network optimization and filtering capabilities are improved, but network reactivity and configuration speed deteriorate due to the distance from remote access networks
Solution Approach 1:
The patent segments the control plane into distributed control modules deployed at strategic network locations (edge routers, aggregation points) rather than a single centralized controller. This allows local decision-making for time-sensitive operations while maintaining centralized coordination for global optimization, resolving the contradiction between optimization capability and reactivity speed.
Solution Approach 2:
The patent introduces a hierarchical dimension to the control architecture, with control modules operating at multiple levels (edge, aggregation, core). This multi-dimensional approach enables simultaneous local reactivity at edge levels and global optimization at higher levels, eliminating the trade-off between speed and adaptability.
2Reliability
If autonomous routing domains are used in distributed networks, then deployment robustness is improved, but consistent QoS and QoE management across the entire network deteriorates
Solution Approach 1:
The patent implements universal control module instances that can operate autonomously within each routing domain while adhering to standardized protocols and policies. These multi-functional modules maintain both local autonomy for robust deployment and global coordination for consistent QoS/QoE, allowing the same control logic to function across diverse autonomous domains.
Solution Approach 2:
The patent establishes feedback mechanisms where control modules continuously exchange state information and performance metrics across domain boundaries. This inter-domain feedback enables coordinated QoS management while preserving autonomous operation, as each module adjusts its behavior based on global network state without sacrificing deployment robustness.
3Productivity
If additional control modules are added to routing devices, then flow management capability is improved, but device complexity increases
Solution Approach 1:
The patent introduces standardized intermediary control modules that act as mediators between the data plane and network management functions. These modular intermediaries provide flow management capabilities through well-defined interfaces, allowing enhanced functionality without proportionally increasing overall device complexity, as the complexity is encapsulated in replaceable module instances.
Solution Approach 2:
The patent enables dynamic parameter adjustment in control modules based on network conditions and traffic patterns. By changing operational parameters (thresholds, policies, resource allocations) rather than hardware architecture, the system achieves improved flow management capability while maintaining relatively simple device structures that can be reconfigured through software parameters.
Data Source
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AI summary
The invention concerns a method for controlling data stream exchanges between at least one source connected to a hybrid wide-area telecommunication network via a local access network and at least one recipient connected to said wide-area telecommunication network via a remote access network. This method comprises the steps consisting of: establishing new transfer rules by analysing the streams, dynamically creating at least one additional path for exchanging the streams from new transfer rules and current access rules, applying, to said additional path, mechanisms for enhancing the reliability, security and optimisation of the transfers of streams between the local access network and the remote access network, and transferring each new stream to the recipient via the additional path according to the new transfer rules.