Wireless Selective eMBB Retransmission After URLLC Puncturing
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently supporting both high-capacity and low-latency transmissions, as current methods for handling conflicts between eMBB and URLLC data result in inefficient resource utilization and increased overhead.
Innovation Solution
A retransmission method where a subset of corrupted eMBB data is identified and retransmitted, rather than the entire data, optimizing resource use by targeting only the affected portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire eMBB data is retransmitted when a portion is corrupted by URLLC transmission, then reliability is improved, but resource efficiency deteriorates
Solution Approach 1:
The patent segments the retransmission process by identifying and isolating only the corrupted portion of eMBB data that needs retransmission, rather than retransmitting the entire data block. This is achieved through puncturing techniques where the base station identifies which resource elements were overwritten by URLLC transmission and schedules retransmission only for those specific segments, thereby improving resource efficiency while maintaining reliability.
Solution Approach 2:
The patent extracts and retransmits only the specific corrupted portion of eMBB data that was affected by URLLC transmission. The base station identifies the exact resource elements that were punctured and schedules retransmission solely for those extracted corrupted segments, eliminating the need to retransmit intact data portions and reducing overall resource consumption.
2Productivity
If eMBB and URLLC transmissions are multiplexed in the same resources, then resource utilization is improved, but transmission reliability deteriorates
Solution Approach 1:
The patent applies preliminary action by proactively scheduling retransmission of corrupted eMBB data segments immediately after identifying puncturing by URLLC transmission. The base station monitors for URLLC puncturing events and pre-schedules retransmission resources before the eMBB data deadline, ensuring reliability is restored while maintaining high resource utilization through the initial multiplexing approach.
Solution Approach 2:
The patent implements feedback mechanisms where the base station monitors transmission outcomes and identifies when eMBB data has been corrupted by URLLC puncturing. This feedback triggers targeted retransmission of only the affected segments, allowing the system to maintain high resource utilization through multiplexing while correcting reliability issues through selective retransmission based on observed corruption events.
3Speed
If puncturing is used to accommodate URLLC in eMBB resources, then low latency is achieved, but resource efficiency deteriorates
Solution Approach 1:
The patent segments the retransmission burden by identifying exactly which portions of eMBB data were punctured by URLLC transmission and scheduling retransmission only for those specific segments. This segmentation approach maintains the low-latency benefit of puncturing while reducing retransmission overhead by avoiding redundant transmission of non-corrupted data portions.
Solution Approach 2:
The patent applies partial action by performing retransmission only to the extent necessary—specifically, only the corrupted segments that were punctured by URLLC transmission are retransmitted. This partial retransmission approach avoids the excessive resource consumption of full-data retransmission while still achieving the necessary reliability correction.
Data Source
AI summary
A retransmission method for use in a telecommunications system, the method comprising: transmitting, to a terminal, first data in a set of identified resources allocated for the transmission of the first data; identifying that a portion of the identified resources has been used to transmit data other than the first data; and retransmitting a subset of the first data, the subset of the first data comprising the portion of the first data that was previously scheduled to be transmitted in the portion of the identified resources.