Sidelink Carrier Aggregation Transmission Alignment
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Solution Overview
Problem
Current 5G NR sidelink communication systems do not support carrier aggregation, leading to inefficiencies in resource utilization and potential phase incontinuity due to misalignment in data transmission across different component carriers.
Innovation Solution
A method for aligning transmissions across two different sidelink component carriers by reducing the number of symbols in transmissions without a physical sidelink feedback channel (PSFCH) to match those with PSFCH, and repeating a portion of the data during the PSFCH transmission on another component carrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmissions are aligned across component carriers, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent changes the timing parameter of transmissions by aligning them across component carriers. Specifically, it adjusts the transmission timing of the first transmission on the first component carrier to be aligned with the transmission timing of the second transmission on the second component carrier, ensuring that transmissions end at the same time. This parameter adjustment improves reliability without requiring complex coordination mechanisms.
2Productivity
If carrier aggregation is enabled, then throughput is improved, but resource utilization efficiency deteriorates due to phase incontinuity
Solution Approach 1:
The patent applies equipotentiality by ensuring that transmissions across different component carriers are synchronized to the same timing level. By aligning the transmission timing such that both transmissions end at the same time, the system eliminates phase incontinuity and achieves uniform resource utilization across carriers, preventing resource wastage while maintaining high throughput.
3Loss of energy
If transmission alignment is implemented, then resource wastage is reduced, but ease of operation deteriorates
Solution Approach 1:
The patent implements preliminary action by pre-aligning the transmission timing before actual data transmission begins. The system configures the transmission parameters in advance so that the first transmission on the first component carrier and the second transmission on the second component carrier are scheduled to end at the same time. This preliminary timing configuration eliminates resource wastage during operation without requiring complex real-time adjustments.
Data Source
AI summary
A user equipment may be configured to implement a procedure for aligning transmissions for intra-band carrier aggregation in sidelink communications. In some aspects, a user equipment may send one or more first transmissions to a second UE via a first sidelink component carrier, a first transmission of the one or more first transmissions including first user data. Further, the user equipment may send one or more second transmissions to a third UE via a second sidelink component carrier, the one or more first transmissions aligned with the one or more second transmissions and a second transmission of the one or more second transmissions including second user data and a repetition of a portion of the second user data.