Uplink Data Compression With Checksum Error Handling
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing uplink coverage mismatch and data compression failures in 5G networks, particularly in scenarios involving supplementary uplink frequencies and data transmission over high-frequency bands like mmWave, which affect transmission distance and quality of service.
Innovation Solution
The implementation of a communication method that includes a supplementary uplink frequency to address coverage mismatches and a data compression technique using a DEFLATE-based algorithm for efficient data transmission, with mechanisms for handling checksum failures and data discarding to ensure reliable decompression and quality of service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data compression is applied to increase uplink capacity, then data transmission efficiency is improved, but checksum failures occur leading to decompression errors
Solution Approach 1:
The patent applies preliminary action by calculating and attaching a checksum to the compressed data buffer before transmission occurs. This allows the receiving end to verify data integrity proactively, and if verification fails, the system can discard the problematic data before it causes decompression errors, thus maintaining both compression efficiency and data reliability
Solution Approach 2:
The patent implements feedback mechanisms where the receiving end verifies checksums of received compressed data and provides feedback through uplink transmissions. When checksum verification fails, the system identifies and discards erroneous data segments, creating a closed-loop feedback system that maintains data integrity while preserving compression benefits
2Length of moving object
If supplementary uplink frequency is used to extend coverage, then uplink transmission distance is improved, but coverage mismatch between uplink and downlink persists
Solution Approach 1:
The patent applies local quality by configuring supplementary uplink frequencies selectively for specific cell groups and user equipment based on their coverage requirements. Instead of uniformly applying supple-mentary uplink across all frequencies, the system locally optimizes frequency usage to extend uplink coverage where needed while maintaining downlink-uplink coverage balance in other areas
3Reliability
If data is discarded upon checksum failure to ensure reliability, then data integrity is improved, but transmission throughput decreases
Solution Approach 1:
The patent applies partial action by discarding only the specific data segments that fail checksum verification rather than discarding all compressed data. This selective discarding approach maintains data integrity for valid segments while preserving overall transmission throughput by keeping functional data segments in the buffer for decompression
Data Source
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AI summary
Provided is a method for performing uplink data compression (UDC) by a user equipment (UE). The method includes receiving configuration information on UDC; generating a first UDC packet by compressing uplink data, based on the configuration information on UDC; transmitting the first UDC packet; receiving, from the base station, packet data convergence protocol (PDCP) layer control information including checksum error information about whether a checksum error has occurred in the first UDC packet; and resetting a UDC buffer used in compressing the uplink data, based on the PDCP layer control information.