Bonded Link Error Propagation for Buffer Reduction
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Solution Overview
Problem
Communication systems face challenges in managing differential delays among bonded physical links, which require significant buffering due to variations in transmission speeds and retransmissions caused by errors, leading to increased buffer sizes.
Innovation Solution
The system propagates errors detected on one physical link to other bonded links, causing retransmissions and introducing delays across all links, thereby reducing the overall differential delay and minimizing the required buffer size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If retransmission is used to correct errors on physical links, then reliability is improved, but differential delay increases requiring larger buffers
Solution Approach 1:
The system performs preliminary actions by proactively causing retransmissions on all bonded links when an error is detected on any single link, before the differential delay can accumulate to require large buffers. This preventive approach ensures that all links experience similar delay characteristics, reducing the buffer size needed at the receiver.
2Productivity
If bonding is used to increase bandwidth, then productivity is improved, but device complexity increases due to multiple physical links
Solution Approach 1:
The patent merges the error handling operations across multiple physical links by causing retransmissions on all links when an error is detected on any single link. This unified approach simplifies the management of differential delays in bonded link configurations, reducing the complexity of coordinating error corrections across multiple links.
3Speed
If faster physical links transmit data without waiting for slower links, then speed is improved, but buffer size must increase to accommodate fragment reassembly
Solution Approach 1:
The system performs preliminary error propagation to all bonded links before data transmission completes, ensuring that all links experience similar retransmission delays. This prevents the scenario where faster links finish transmitting and waiting for slower links, thereby reducing the buffer size needed for fragment reassembly while maintaining high transmission speeds.
Data Source
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AI summary
Communication devices, systems and methods are provided in which, when an error causing retransmission is detected in one of a plurality of physical links, a delay is caused in at least one further physical link of the plurality of bonded links.