Feedback-Based Ethernet Header Compression in Wireless PDCP
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need to efficiently use transmission resources in next-generation mobile communication systems to support services requiring low latency and high reliability, such as ultra-reliable low latency communication (URLLC) and industrial IoT (IIoT), particularly in improving the operations of the radio link control (RLC) and packet data convergence protocol (PDCP) layers.
Innovation Solution
Implementing a method for configuring out-of-order delivery and reordering timer values for RLC and PDCP entities, enabling efficient data processing and transmission through Ethernet header compression and decompression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Ethernet header compression is implemented to improve transmission efficiency, then resource utilization improves, but processing complexity increases
Solution Approach 1:
The patent performs Ethernet header compression in advance at the PDCP layer before data transmission, preparing compressed headers and storing them for later use. This preliminary compression action reduces the amount of data that needs to be transmitted and processed later, improving overall transmission efficiency while managing complexity through pre-processing
Solution Approach 2:
The patent creates compressed copies of Ethernet headers that can be reused for multiple packets with similar characteristics. Instead of compressing full headers repeatedly, the system generates compact representations that can be replicated and applied to subsequent packets, reducing processing complexity while maintaining high transmission efficiency
2Speed
If out-of-order delivery is enabled for RLC entity to reduce latency, then transmission speed improves, but data ordering reliability deteriorates
Solution Approach 1:
The patent segments the data transmission process into two independent functions: the RLC layer handles out-of-order delivery for speed, while the PDCP layer handles reordering for reliability. This segmentation allows each layer to optimize its specific function without compromising the other, enabling fast transmission while maintaining data ordering integrity
Solution Approach 2:
The PDCP layer acts as an intermediary between the RLC layer and upper layers. It receives out-of-order packets from RLC, performs reordering based on sequence numbers, and then delivers data in the correct order to upper layers. This intermediary function resolves the contradiction by allowing speed optimization at RLC while ensuring reliability at PDCP
3Reliability
If reordering timer value is configured for PDCP entity to ensure data ordering, then reliability improves, but transmission latency increases
Solution Approach 1:
The patent implements a dynamic reordering timer mechanism where the timer value can be adjusted based on network conditions and service requirements. For latency-sensitive services like URLLC, the timer can be configured with shorter values or disabled, allowing faster delivery while maintaining acceptable reliability. This dynamic adjustment resolves the contradiction by adapting the reliability-latency tradeoff to specific service needs
Data Source
AI summary
The present disclosure relates to a communication technique for converging IoT technology with a 5G communication system for supporting a higher data transfer rate beyond the 4G system, and a system thereof. The present disclosure may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. The present disclosure provides a method and apparatus for configuring an out-of-order delivery function of a protocol layer device.