PDCP Header Compression Indication for Dual Decompression
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing header compression for diverse data types in 5G networks, leading to potential header decompression failures due to the lack of indication of applied header compression algorithms in Packet Data Convergence Protocol (PDCP) PDUs.
Innovation Solution
Incorporating a header compression indicator in PDCP PDUs to specify whether Robust Header Compression (ROHC) or Ethernet Header Compression (EHC) is applied, allowing correct decompression and supporting multiple header compression algorithms simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple header compression algorithms are applied to diverse data types, then data transmission efficiency is improved, but header decompression failures occur due to lack of indication
Solution Approach 1:
The patent segments the header compression indication by introducing a specific field within the PDCP PDU structure that identifies which compression algorithm (ROHC or EHC) is applied to each data unit. This segmentation allows the receiver to correctly identify and apply the appropriate decompression algorithm, resolving the decompression failure issue while maintaining support for multiple compression schemes
Solution Approach 2:
The patent introduces an intermediary indication field as a mediator between the transmitter and receiver. This field carries information about the applied header compression algorithm, enabling the receiver to correctly interpret and decompress the data without ambiguity, thus maintaining both reliability and support for multiple algorithms
2Reliability
If a single header compression algorithm is used, then decompression reliability is maintained, but header overhead increases and transmission efficiency decreases
Solution Approach 1:
The patent changes the parameter of header compression by allowing dynamic selection between ROHC and EHC algorithms based on the data type. This enables optimal compression for each specific data unit while the indication field efficiently signals the chosen algorithm, reducing overall header overhead without compromising decompression reliability
3Reliability
If header compression indication is added to PDCP PDUs, then correct decompression is enabled, but device complexity increases
Solution Approach 1:
The patent adds the compression algorithm indication in another dimension within the existing PDCP PDU structure, utilizing available fields or extending the structure in a controlled manner. This approach enables correct decompression while minimizing the increase in device complexity by integrating the indication mechanism into the existing protocol framework
Data Source
AI summary
The present disclosure relates to a method of receiving a data unit by a receiver in a wireless communication system. In particular, the method includes the steps of: receiving the data unit including a payload; and decompressing a header of the payload based on both a first type header compression algorithm and a second type header compression algorithm.