One-Way TCP ACK Delay for Buffer Overflow Mitigation
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Solution Overview
Problem
Current physical one-way data transfer systems face challenges with data loss due to link errors and network congestion, particularly in unidirectional connections, leading to buffer overflow and incomplete data transmission, which is problematic for TCP-based protocols that require lossless data transfer.
Innovation Solution
A one-way data transmission and reception system that includes an interface integration module for monitoring and managing TCP sessions, generating identical data frames based on buffer states and importance levels, and transmitting delayed TCP ACK frames to mitigate buffer overflow and data loss, while using frame monitoring and generation units to handle UDP and TCP frames effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If TCP protocol is used for reliable data transfer, then data loss is prevented, but buffer overflow occurs due to delayed ACK in unidirectional connections
Solution Approach 1:
The system performs preliminary actions by sending multiple identical data frames before the ACK timeout period expires. This proactive transmission ensures that if one frame is lost, identical copies are already in transit or buffered, preventing data loss without requiring traditional retransmission that would cause buffer overflow.
Solution Approach 2:
The patent implements beforehand cushioning by maintaining a buffer of identical data frames at the transmitter side. This buffer acts as a cushion that can supply replacement frames if transmission losses occur, eliminating the need for retransmission requests that would otherwise cause buffer overflow in unidirectional TCP connections.
2Reliability
If multiple identical data frames are transmitted to prevent data loss, then reliability improves, but network bandwidth is wasted
Solution Approach 1:
The system applies partial action by transmitting multiple identical frames only when necessary - specifically, when the calculated probability of frame loss exceeds a threshold or when the buffer state indicates available capacity. This selective approach provides redundancy only when needed, avoiding unnecessary bandwidth consumption while maintaining reliability.
Solution Approach 2:
The patent dynamically changes transmission parameters including the number of identical frames to send, the delay period before sending duplicates, and the buffer size allocation. These parameters are adjusted based on network conditions, frame importance levels, and buffer states, optimizing the balance between reliability and bandwidth efficiency.
3Object-affected harmful factors
If delayed TCP ACK is used to control throughput, then buffer overflow is prevented, but data transmission speed decreases
Solution Approach 1:
The system maintains continuity of useful action by proactively sending multiple identical data frames within the delayed ACK period rather than waiting for retransmission triggers. This continuous transmission keeps the data flow moving without interruption, preventing both buffer overflow and speed degradation by eliminating retransmission delays.
4Reliability
If frame monitoring and duplicate transmission are implemented, then data loss is reduced, but device complexity increases
Solution Approach 1:
The patent implements copying by creating identical copies of data frames rather than implementing complex error correction or verification mechanisms. This simple copying approach achieves high reliability through redundancy while minimizing device complexity, as the system only needs to duplicate and transmit frames without sophisticated frame management.
Data Source
AI summary
A one-way data transmission and reception system and method, which mitigate the problem of a buffer overflow that may occur on a reception system while also mitigating the problem of data loss caused by a link error that may occur in the unidirectional line of a physical one-way data transmission system. The one-way data transmission system includes a first interface unit connected to a first network. A second interface unit is unidirectionally connected to a reception system connected to a second network. An interface integration module unit transmits a delayed Transmission Control Protocol (TCP) Acknowledgement (ACK) frame to a TCP session established with a device of the first network unit through the first interface unit, and transmits one or more identical data frames to the reception system through the second interface unit.