Retransmission TBs with Initial CBGs for Resource Efficiency
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Solution Overview
Problem
Prior art Long Term Evolution (LTE) system data transmission techniques for Code Block Groups (CBGs) incur resource inefficiencies and delays due to excessive resource consumption during retransmissions, as they often require dedicated retransmission Transmission Blocks (TBs with unoccupied slots.
Innovation Solution
A method where retransmission TBs include both retransmission CBGs and initial transmission CBGs, utilizing unoccupied slots for initial transmission CBGs, thereby reducing resource waste and increasing retransmission efficiency without delaying retransmissions until sufficient retransmission CBGs are available.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated retransmission TBs are used for CBG retransmission, then retransmission reliability is improved, but resource utilization deteriorates due to unoccupied slots
Solution Approach 1:
The patent merges retransmission CBGs and initial transmission CBGs into the same TB structure. Instead of using separate dedicated retransmission TBs, the invention combines both retransmission data and new initial transmission data within a unified TB, thereby eliminating unoccupied slots and improving resource utilization while maintaining retransmission reliability
Solution Approach 2:
The TB structure is designed to serve multiple functions simultaneously: it can carry retransmission CBGs, initial transmission CBGs, or both together. This multi-functional TB design allows the system to adapt to different transmission scenarios without requiring separate dedicated structures, thus improving both reliability and resource efficiency
2Loss of energy
If retransmission TBs are delayed until sufficient retransmission CBGs are available, then resource utilization is improved, but transmission delay increases
Solution Approach 1:
The patent enables preliminary transmission of initial transmission CBGs within the same TB that carries retransmission CBGs. Instead of waiting until sufficient retransmission CBGs are accumulated to fill a TB, the system performs preliminary action by transmitting initial CBGs alongside retransmission CBGs, thereby reducing transmission delay while maintaining resource utilization
Solution Approach 2:
The invention ensures continuity of useful action by allowing the TB to carry both retransmission and initial transmission CBGs simultaneously. This continuous transmission approach prevents idle periods and ensures that transmission resources are continuously utilized without delay, maintaining both resource efficiency and low latency
Data Source
AI summary
A data transmission method is described that includes: receiving transmission feedback for one or more Code Block Groups (CBGs) from a receiver; transmitting one or more Transmission Blocks (TBs) based on the transmission feedback, wherein one of the one or more TBs comprises one or more retransmission CBGs and one or more initial transmission CBGs; in response to the one of the one or more TBs being an uplink transmission TB, obtaining, based on a correspondence between a number of the one or more retransmission CBGs carried by the one of the one or more TBs and scrambling sequences, scrambled information by scrambling a first check bit sequence, wherein the first check bit sequence is generated based on the transmission feedback and Uplink Control Information (UCI); and uplink-transmitting the UCI and the scrambled information.