CBG Grouping and Multiple MCS for Full-Duplex TRP Transmission
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in efficiently managing transmission and reception of code block groups (CBGs) across multiple transmission and reception points (TRPs), leading to self-interference and inefficiencies in resource utilization due to the use of a single modulation and coding scheme for all TRPs.
Innovation Solution
Implementing a method where each TRP transmits CBGs based on a unique modulation and coding scheme, allowing for frequency division multiplexing of resources and accommodating different channel conditions, thereby improving communication efficiency and mitigating self-interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single modulation and coding scheme (MCS) is used for all TRPs, then device complexity is reduced and ease of operation is improved, but communication efficiency deteriorates and self-interference increases
Solution Approach 1:
The patent applies local quality by assigning different MCS values to different TRPs based on their specific channel conditions. Each TRP transmits CBGs with an MCS tailored to its local propagation environment, allowing optimal adaptation to varying signal qualities, distances, and interference levels at each transmission point while maintaining overall system efficiency
2Device complexity
If a single MCS is used for all TRPs, then device complexity is reduced, but resource utilization efficiency deteriorates due to inability to accommodate different channel conditions
Solution Approach 1:
The patent implements local quality by enabling each TRP to use independently configured MCS values based on local channel conditions. The UE receives and applies different MCS parameters for each TRP, allowing resource optimization at each transmission point without requiring complex centralized coordination, thus improving resource utilization while keeping device complexity manageable
Solution Approach 2:
The patent applies dynamics by making the MCS configuration adaptive and flexible. The system dynamically selects appropriate MCS values for each TRP based on current channel conditions, allowing the transmission parameters to change adaptively across different TRPs and time instances, optimizing resource utilization for varying propagation environments
3Productivity
If TRPs transmit CBGs simultaneously using the same MCS, then resource utilization is simplified, but self-interference increases and communication reliability deteriorates
Solution Approach 1:
The patent applies local quality by configuring different MCS values for different TRPs to account for their distinct channel conditions and interference environments. This differentiation improves communication reliability by ensuring each TRP transmits at an appropriate complexity level matched to its local propagation characteristics, reducing errors and retransmissions
Solution Approach 2:
The patent converts the potential harm of simultaneous TRP transmissions causing self-interference into a benefit by using different MCS values. The varying MCS configurations transform what would be interfering signals into complementary transmissions that can be more reliably decoded, as the diversity in modulation schemes helps differentiate and resolve simultaneous signals
Data Source
AI summary
A UE may receive DCI from a first TRP scheduling a transmission of a TB from the first TRP and a second TRP. The UE may receive, from the first TRP a first set of CBGs of the TB in a first set of resources. The UE may receive, from the second TRP a second set of CBGs of the TB in a second set of resources that is different than the first set of resources. The first set of CBGs may be received based on a first MCS and the second set of CBGs may be received based on a second MCS. The UE may transmit, in a full-duplex mode, a message to the first TRP. The transmission to the first TRP may overlap in time with the reception from the first TRP. Accordingly, the first MCS may be lower than the second MCS.