Puncture-Aware Decoding for 5G eMBB-URLLC Coexistence
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Solution Overview
Problem
In radio communication systems, especially in 5G networks, the coexistence of eMBB and URLLC traffic leads to potential block errors due to resource puncturing, which affects the accurate calculation of log-likelihood ratios (LLR) and data acquisition by user equipment.
Innovation Solution
A communication apparatus is designed with a reception unit to receive control information indicating punctured resources and a decoding unit that uses this information to decode data, allowing for accurate data acquisition even when resources are punctured.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If resources allocated to eMBB traffic are punctured for URLLC traffic, then URLLC low delay requirement is improved, but eMBB block error rate deteriorates
Solution Approach 1:
The base station performs preliminary action by notifying the user equipment of puncture resource information before data transmission occurs. This advance notification allows the user equipment to prepare appropriate reception and decoding strategies, preventing the deterioration of block error rate while still allowing resource puncturing for URLLC traffic.
Solution Approach 2:
The system implements a feedback mechanism where the base station provides puncture resource information to the user equipment through control information. This feedback loop enables the user equipment to adjust its reception parameters based on the actual resource allocation, maintaining reliable data acquisition despite resource puncturing.
2Device complexity
If puncture resources are not notified to user equipment, then control information overhead is reduced, but user equipment cannot appropriately acquire data due to incorrect LLR calculation
Solution Approach 1:
The invention extracts only the essential puncture resource information needed for accurate data reception, rather than transmitting complete resource allocation details. This selective extraction provides sufficient information for LLR calculation while minimizing control information overhead.
Solution Approach 2:
The system changes the parameter representation by providing puncture resource information in a compact form that enables accurate LLR calculation without requiring full resource allocation details. This parameter optimization maintains measurement precision while reducing control information complexity.
Data Source
AI summary
A communication apparatus in a radio communication system, including: a reception unit configured to receive control information including puncture information which indicates that there is a puncture resource in resources allocated to the communication apparatus from another communication apparatus; and a decoding unit configured to decode data received from the other communication apparatus in the allocated resources, wherein the decoding unit performs the decoding using the puncture information included in the control information received by the reception unit.