Data Packet Decompression With Buffer Synchronization Signaling
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Solution Overview
Problem
In acknowledged mode transmission in LTE systems, data packet decompression errors occur due to inconsistent buffers between the transmit and receive ends, leading to a high loss of data packets when the receive end fails to decompress compressed data packets correctly.
Innovation Solution
A communication method where a device deletes a data packet and sends signaling to indicate its buffer state to the receive end, allowing the receive end to use this buffer for correct decompression, thereby maintaining buffer consistency and reducing data packet loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transmit end deletes a data packet to reduce transmission overhead, then the transmission efficiency is improved, but the buffer consistency between transmit and receive ends deteriorates, causing decompression errors
Solution Approach 1:
The transmit end sends indication information to the receive end before the receive end attempts decompression, notifying it of deleted data packets in advance. This allows the receive end to prepare appropriate dummy data or adjust its buffer state proactively, preventing decompression errors before they occur.
Solution Approach 2:
The system implements a feedback mechanism where the transmit end informs the receive end about deleted data packets through indication information. This feedback loop allows the receive end to synchronize its buffer state with the transmit end, maintaining consistency despite packet deletions for efficiency.
2Measurement precision
If the receive end requests retransmission of deleted data packets to maintain buffer consistency, then the decompression accuracy is improved, but the transmission overhead increases
Solution Approach 1:
Instead of retransmitting the actual deleted data packets, the system extracts and transmits only the essential indication information about which packets were deleted. This minimal information allows the receive end to reconstruct the necessary buffer state without receiving the full packet data again, significantly reducing overhead while maintaining decompression accuracy.
3Reliability
If the transmit end maintains buffer consistency by not deleting data packets, then the decompression success rate is improved, but the data packet loss increases
Solution Approach 1:
The indication information acts as an intermediary that bridges the gap between the transmit end's buffer state and the receive end's buffer state. Even when data packets are deleted, this intermediary information allows the receive end to synchronize its buffer correctly, ensuring decompression success without requiring the actual packet data to be transmitted.
Data Source
AI summary
A communication method includes that a first device deletes a first data packet. The first device sends first signaling to a second device, where the first signaling includes or indicates a first buffer, the first buffer is used to compress a second data packet or used to decompress a compressed second data packet, a serial number of the first data packet and a serial number of the second data packet are consecutive, the serial number of the second data packet follows the serial number of the first data packet, and the second device is a receiving device of the compressed second data packet.