Wireless PDU Error Detection Using Encrypted Data Verification
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Solution Overview
Problem
Third generation mobile communication systems face challenges in ensuring data accuracy and security during wireless transmission, particularly in voice communication where interference and desynchronization can lead to noise and errors, especially in transparent mode where only audio data is transmitted without verification.
Innovation Solution
A method for error detection in wireless transmission involves generating encrypted data, creating a verification code based on the transmission mode, and providing a protocol data unit (PDU) with a frame check sequence (FCS) using cyclic redundancy check (CRC), which is then decoded at the receiver to determine if the decrypted data matches the verification code, triggering error control procedures if not.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If transparent mode transmission is used for real-time voice communication, then transmission speed and real-time performance are improved, but data accuracy and reliability deteriorate due to lack of verification mechanisms
Solution Approach 1:
The patent applies preliminary action by pre-calculating and attaching the Frame Check Sequence (FCS) verification code to each Protocol Data Unit (PDU) before transmission. This allows the receiver to immediately verify data integrity without waiting for acknowledgments, maintaining real-time transmission while ensuring data accuracy through proactive error detection setup.
Solution Approach 2:
The patent introduces FCS (Frame Check Sequence) as an intermediary verification mechanism. The FCS acts as a mediator between the transmitted data and the receiver, enabling automatic error detection without requiring complex retransmission protocols, thus preserving real-time performance while improving reliability.
2Reliability
If verification mechanisms are added to transparent mode transmission, then data accuracy is improved, but transmission efficiency and real-time performance deteriorate
Solution Approach 1:
The patent applies partial action by implementing verification only at the necessary level - attaching FCS to each PDU for error detection - rather than using full retransmission protocols. This partial verification approach provides sufficient data accuracy for voice communication without the overhead of complete error correction mechanisms, maintaining transmission efficiency.
3Reliability
If encryption is performed on transmitted data, then data security is improved, but processing time and complexity increase
Solution Approach 1:
The patent applies preliminary action by performing encryption and FCS attachment during the data preparation phase before transmission. This upfront processing ensures data security and verification readiness without adding complexity during real-time transmission and reception operations.
Data Source
AI summary
A transmitter generates an encrypted data by processing a specific data according to a specific transmission mode, generates a verification code according to the specific transmission mode, and provides a protocol data unit according to the encrypted data and the verification code. After transmission, a receiver decodes the protocol data unit and determines whether the decrypted data of the protocol data unit matches the verification code, thereby providing error detection for wireless transmission.