PDCP Uplink Data Compression for 5G IoT Coverage
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Solution Overview
Problem
Current wireless communication systems face challenges in providing seamless communication services, particularly in 5G networks, due to issues like mismatched uplink and downlink coverage, which affect data transmission rates and reliability, especially in IoT environments where diverse technical components and advanced access schemes are required.
Innovation Solution
The implementation of a method that uses Packet Data Convergence Protocol (PDCP) configuration to enable uplink data compression (UDC) in wireless communication systems, where a terminal receives PDCP configuration information from a base station, generates and transmits ciphered UDC headers and data blocks, and the base station receives and processes these, without configuring header compression, to improve data transmission efficiency and coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If header compression is configured in PDCP, then data transmission overhead is reduced, but device complexity increases due to additional compression/decompression processes
Solution Approach 1:
The patent extracts the header compression function from the PDCP layer and implements it separately as a distinct compression entity. This separation allows the PDCP layer to focus on security processing while header compression is handled by a dedicated component, reducing overall system complexity while still achieving overhead reduction through specialized compression algorithms.
Solution Approach 2:
The patent segments the PDCP processing into distinct functional modules: a compression entity that handles header compression separately from the main PDCP security processing. This segmentation allows independent optimization of each function and reduces the complexity burden on the core PDCP layer by isolating the compression/decompression operations.
2Productivity
If uplink data compression is implemented, then data transmission efficiency is improved, but processing time increases due to additional compression steps
Solution Approach 1:
The patent implements preliminary header compression at the transmitting end before data transmission, so that compressed headers are ready and stored in advance. This preliminary action eliminates the need for real-time compression during transmission, reducing processing time delays while maintaining high compression efficiency for improving data transmission productivity.
Solution Approach 2:
The patent uses template-based header compression where common header structures are pre-defined as templates. Instead of compressing each header from scratch, the system copies and fills in template structures with specific data, significantly reducing processing time while maintaining effective compression ratios for improved transmission efficiency.
3Reliability
If PDCP security processing is applied to compressed data, then data security is maintained, but processing complexity increases due to additional ciphering steps
Solution Approach 1:
The patent extracts the security processing function into a separate security entity that operates independently from the compression entity. This extraction allows the compression and security functions to be implemented as distinct modules, reducing the complexity of each individual component while maintaining the required security functionality through dedicated cryptographic processing.
Solution Approach 2:
The patent segments the PDCP processing into distinct functional modules: a compression entity that handles header compression separately from the main PDCP security processing. This segmentation allows independent optimization of each function and reduces the complexity burden on the core PDCP layer by isolating the compression operations.
Data Source
AI summary
Methods and apparatuses are provided in a wireless communication system. Packet data convergence protocol (PDCP) configuration information that configures a PDCP entity of the terminal to use an uplink data compression (UDC) is received from a base station. The PDCP entity generates a UDC header and a UDC data block, based on the PDCP configuration information. The PDCP entity ciphers the UDC header and the UDC data block. The PDCP entity generates PDCP data including a PDCP header, the ciphered UDC header and the ciphered UDC data block. The generated PDCP data is transmitted to the base station. A header compression is not configured in case that the UDC is configured.