WDM Network Channel Assignment via Collision Probability
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Solution Overview
Problem
In optical wavelength division multiplex communication networks, frequent data collisions in shared optical channels lead to delays and reduced data transmission rates, especially as the number of network participants increases, necessitating an efficient method for channel allocation to minimize collisions.
Innovation Solution
A communication system that dynamically assigns optical channels based on collision probability, where a central network entity monitors and determines the probability of data collisions in multiple channels and switches the channel assignment to the network router if the collision probability exceeds a predetermined threshold, using a cryptographic protocol to manage channel changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple network participants share the same optical channel, then the network utilization is improved, but the probability of data collisions increases
Solution Approach 1:
The patent implements dynamic channel assignment where network participants are assigned to different optical channels based on real-time collision probability calculations. The central network entity continuously monitors collision rates and reassigns participants to alternative channels when collisions exceed thresholds, transforming the static channel allocation into a dynamic system that adapts to changing network conditions.
Solution Approach 2:
The system changes the operational parameters by monitoring collision probability as a key metric and using this parameter to drive channel reassignment decisions. When the collision probability parameter exceeds a predetermined threshold, the system modifies the channel assignment parameter, thereby changing the system state from high-collision to low-collision configuration.
2Reliability
If the CSMA/CD method is used to resolve data collisions, then data collision resolution is improved, but channel access delays increase as the number of network participants increases
Solution Approach 1:
The patent applies preliminary action by proactively reassigning network participants to different optical channels before collisions occur, based on predicted collision probability. Instead of waiting for collisions to happen and then resolving them via CSMA/CD, the system preemptively redistributes traffic to channels with lower collision risk, thereby preventing delays rather than resolving them after occurrence.
Solution Approach 2:
The system implements feedback mechanisms where the central network entity continuously monitors collision probabilities and uses this feedback information to dynamically adjust channel assignments. This closed-loop control allows the system to respond to changing network conditions and optimize channel allocation in real-time, reducing both collisions and associated delays.
3Measurement precision
If optical channels are monitored using CSMA/CD, then data collision detection is improved, but the system complexity increases
Solution Approach 1:
The patent introduces a central network entity as an intermediary that centralizes the collision probability calculation and channel assignment functions. Instead of each network participant implementing complex CSMA/CD monitoring and decision-making logic, the intermediary entity performs these functions centrally, simplifying the overall system architecture while maintaining precise collision detection and resolution capabilities.
Data Source
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AI summary
The invention relates to a communication system (100) for a wavelength division multiplex communication network, comprising: a plurality of decentralized network nodes (103, 105, 107, 109; 300) for optical data transmission in a wavelength division multiplex communication network via an optical channel, which are connectable to a wavelength division multiplex communication network; and a central network instance (101; 200) for assigning an optical channel to at least one decentralized network node (103, 105, 107, 109; 300) of the plurality of decentralized network nodes (103, 105, 107, 109; 300) for optical data transmission in a wavelength division multiplex communication network.