Sidelink Code Block Group Frequency Division Multiplexing
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Solution Overview
Problem
Time division multiplexed code block groups in sidelink wireless communication networks experience unreliability due to time-domain burst interference, leading to incomplete reception by receiving user equipment (UE).
Innovation Solution
Configuring and transmitting code block groups (CBGs) using frequency division multiplexing, where CBGs occupy different frequency resources and are indicated by sidelink control information (SCI) to be frequency division multiplexed, via a physical sidelink shared channel (PSSCH) to improve reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If time division multiplexing is used for code block groups in sidelink transmission, then resource utilization is improved, but transmission reliability deteriorates due to time-domain burst interference
Solution Approach 1:
The patent transitions from time-division multiplexing to frequency-division multiplexing for code block group transmission. By allocating different CBGs to different frequency resources within the same time slot, the system eliminates time-domain burst interference while maintaining resource utilization efficiency. This dimensional shift from time to frequency domain resolves the contradiction between productivity and reliability.
2Reliability
If frequency division multiplexing is used for code block groups, then transmission reliability is improved by mitigating interference, but device complexity increases due to frequency resource management
Solution Approach 1:
The patent introduces a code block group transmission indication parameter that dynamically indicates whether CBGs are transmitted using time-division or frequency-division multiplexing. This parameter allows the system to adapt to different channel conditions and interference scenarios, achieving high reliability while managing device complexity through conditional operation rather than permanent complex architecture.
Data Source
AI summary
Aspects of the present disclosure include methods, apparatuses, and computer readable media for configuring, in a slot, a first code block group (CBG) occupying one or more first frequency resources, a second CBG occupying one or more second frequency resources different from the one or more first frequency resources, and sidelink control information (SCI) indicating the first CBG is frequency divisional multiplexed with the second CBG, and transmitting the first CBG, the second CBG, and the SCI via a physical sidelink shared channel (PSSCH) to a second UE.