Data Transmission Link Configuration via Channel Availability Indication
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Solution Overview
Problem
Current wireless communication systems cannot guarantee 100% reliable and timely data transmission for applications with high reliability requirements, such as traffic safety, due to random fluctuations in transmission quality, limiting their efficiency and ability to meet stringent success rate and time constraints.
Innovation Solution
A data transmission method that integrates availability indication into the HARQ concept, allowing for real-time configuration of data transmission based on predetermined reliability requirements, using a transmitter-side and receiver-side data transmission unit to assess and adjust transmission parameters according to channel availability, ensuring successful transmission within a defined time frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless communication systems use conventional transmission methods (HARQ, AMC) to handle channel fluctuations, then system flexibility and cost efficiency are maintained, but reliability cannot be guaranteed with 100% probability for safety-critical applications
Solution Approach 1:
The patent applies preliminary action by determining the availability of the communication channel before data transmission occurs. The system assesses channel conditions in advance and only transmits data when the channel is available, preventing transmission attempts that would fail and eliminating the need for complex post-transmission error correction mechanisms.
Solution Approach 2:
The system performs self-service by autonomously monitoring its own communication channel availability and making transmission decisions based on this self-assessment. The transmitter independently determines whether the channel is suitable for transmission without requiring external verification or complex interaction with the receiver.
2Reliability
If the system transmits data continuously to ensure high success rates, then reliability improves, but energy consumption increases and system efficiency decreases
Solution Approach 1:
The system implements periodic action by transmitting data only at specific periods when the channel is determined to be available, rather than continuously. Transmission occurs periodically when channel availability is confirmed, and is suspended when the channel is unavailable, creating an on-demand transmission pattern that conserves energy.
Solution Approach 2:
The patent extracts the transmission decision-making process from continuous operation by separating transmission events based on channel availability. Only the necessary transmission actions are executed when conditions permit, while unnecessary transmissions are extracted or eliminated entirely, reducing wasted energy consumption.
3Reliability
If the system waits for optimal channel conditions to ensure reliable transmission, then transmission reliability improves, but transmission time increases and productivity decreases
Solution Approach 1:
The system performs preliminary channel availability determination before transmission, allowing it to quickly identify suitable transmission opportunities. By assessing channel conditions in advance and having transmission-ready data, the system minimizes waiting time while ensuring reliability, as transmissions only begin when conditions are already confirmed to be suitable.
Solution Approach 2:
The patent applies skipping by bypassing periods when the channel is unavailable and directly transitioning to transmission when the channel becomes available. Rather than waiting passively for optimal conditions, the system actively monitors and rushes through to transmit as soon as availability is confirmed, minimizing time loss.
4Loss of time
If the system implements strict time constraints for data transmission, then service requirements are met, but the probability of successful transmission decreases due to channel fluctuations
Solution Approach 1:
The system performs preliminary channel availability determination within the time constraint framework, identifying suitable transmission windows before they expire. By assessing channel conditions in advance and preparing data for immediate transmission, the system ensures both that time constraints are met and that transmissions occur only when reliability is assured.
Data Source
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AI summary
The invention relates inter alia to a method for data transmission to a transmitter-side data transmission unit comprising the steps of: a) receiving a data transmission request for a data packet from a real-time application which is operatively connected to the data transmission unit; b) transmitting a first portion of the data packet to a receiver-side data transmission unit via the communication channel; c) receiving an availability indicator for the communication channel from the receiver-side data transmission unit; and d) if the availability indicator shows that the communication channel is available, configuring the data of the data packet that needs yet to be transmitted for a successful transmission within the maximum permissible data transmission time which is still available for the data packet and which is determined by the real-time application, and transmitting the data packet. The invention further relates to a complementary method for transmitting data on a receiver-side data transmission unit comprising the steps of: i) receiving a first portion of a data packet from a transmitter-side data transmission unit via a communication channel; ii) determining the availability of the communication channel on the basis of parameters of the communication channel measured during reception of the first portion of the data packet and on the basis of estimated parameters of the communication channel for the rest of a predetermined maximum permissible data transmission time still available for transmission of the data packet; iii) transmitting the availability indicator to the transmitter-side data transmission unit; and iv) receiving the rest of the data packet if the availability indicator shows that the communication channel is available.