Same-Path Redundant Copying for Deterministic Data Flow Protection
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Solution Overview
Problem
Current communication networks, especially those integrating IT and OT, face challenges in providing deterministic services for low-speed data flows sensitive to time delay and packet loss, as best effort services are insufficient to meet the requirements of new services like blockchain, which are sensitive to time delay and packet loss.
Innovation Solution
A data transmission protection method involving same-path redundant copying of data flows in low-speed deterministic networks, where a packet header with a control word and flow identification is encapsulated at the ingress node, copied, and transmitted alongside the original data flow, allowing for recovery at the terminating node, thereby reducing or eliminating packet loss and time delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If best effort services are used in current networks, then network simplicity is maintained, but packet loss and time delay occur that cannot meet deterministic service requirements
Solution Approach 1:
The patent applies same-path redundant copying by transmitting multiple copies of the same data flow along the same path. At the ingress node, the data flow is copied into multiple parallel flows (e.g., primary and secondary flows), which are then transmitted together through the network. This ensures that if one copy experiences packet loss, other copies can compensate, thereby improving reliability without requiring complex network reconfiguration.
Solution Approach 2:
The patent implements beforehand cushioning by pre-establishing redundant data flow copies before actual transmission occurs. The system prepares multiple backup flows in advance and transmits them simultaneously with the original flow, creating a cushion against potential packet loss events. This proactive approach ensures deterministic service requirements are met without reacting to failures as they occur.
2Reliability
If redundant data flow copying is implemented, then packet loss is reduced, but network bandwidth consumption increases
Solution Approach 1:
The patent applies local quality by implementing selective redundancy based on local network conditions and service requirements. Not all data flows receive the same level of redundancy - the system identifies low-speed deterministic network services that are most vulnerable to packet loss and applies redundant copying only to those specific flows. This localized approach improves service integrity for critical flows while minimizing unnecessary bandwidth consumption for less critical traffic.
Data Source
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AI summary
The present disclosure relates to the technical field of communications. Disclosed are a data transmission protection method, apparatus, and system, and a computer readable storage medium. The method comprises: performing packet header encapsulation on a data flow to be transmitted at an ingress node to form an encapsulated data flow, a packet header comprising a control word and a flow identifier; replicating the encapsulated data flow, and transmitting the encapsulated data flow together with the replicated data flow; and recovering the data flow at a final node according to the control word and the flow identifier. By performing redundancy replication of a same path on a data flow of a slow-speed deterministic network service, the effect of a packet loss event is reduced or even eliminated, and a service delay is reduced.