Network Unit Queue Management for Seamless Channel Handover
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Solution Overview
Problem
Existing communication networks face challenges in maintaining data integrity and throughput, especially in wireless communication between moving vehicles, where frequent changes in transmission quality and communication partners lead to data packet loss and duplication.
Innovation Solution
A network unit with a processor, memory, and communication module that splits data streams into different queues and channels, determines a transfer command based on channel deterioration, and shifts data packets to maintain sequence and prevent loss, allowing seamless handover between communication channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data packets are sent through multiple communication channels simultaneously, then data transmission reliability is improved, but data packet duplication occurs
Solution Approach 1:
The patent applies preliminary action by detecting potential future degradation of the second communication channel before it actually fails, and proactively determining a transfer command to move data packets from the second queue to the first queue. This preventive approach ensures seamless handover without packet loss or duplication, as the transition is initiated while the second channel is still functional but showing signs of deterioration.
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of a queue management system with transfer commands. The queue acts as an intermediary buffer between the data source and the communication channels, allowing controlled transfer of data packets between channels. This intermediary structure enables reliable channel switching without direct packet duplication, as packets are moved through the queue rather than being simultaneously transmitted on multiple channels.
2Reliability
If data packets are moved between queues based on channel quality, then data packet loss is prevented, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the data stream into separate queues (first queue and second queue) corresponding to different communication channels. This segmentation allows independent management of packets for each channel, enabling selective transfer based on channel quality without managing complex interdependencies. The segmented queue structure simplifies the overall management complexity while maintaining reliable packet loss prevention.
3Reliability
If handover between communication channels is performed frequently, then communication quality is maintained, but data transmission stability deteriorates
Solution Approach 1:
The patent implements feedback by continuously monitoring the quality of communication channels and using this information to determine when to issue transfer commands. The feedback mechanism allows the system to make informed decisions about channel switching, maintaining communication quality while avoiding unnecessary frequent handovers. The transfer command is generated based on actual channel degradation detection, ensuring stable transmission by only switching when truly necessary.
Data Source
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AI summary
A method for operating a first network unit (202) is provided, comprising: moving at least a part of second data packets from a second queue to a first queue depending on a determined transfer command and sending the first data packets and the second data packets via the first communication channel towards the second network unit (204).