Sidelink Feedback Signal Transmission via Dynamic Resource Selection
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Solution Overview
Problem
Current multicarrier communication systems face challenges in efficiently managing sidelink feedback signal transmission, particularly in dynamic radio environments where accurate and timely feedback is crucial for optimizing wireless device performance.
Innovation Solution
The implementation of advanced modulation and transmission mechanisms, such as Code Division Multiple Access (CDMA), Orthogonal Frequency Division Multiple Access (OFDMA), and hybrid mechanisms like TDMA/CDMA and OFDM/CDMA, along with Quadrature Amplitude Modulation (QAM) schemes, to enhance physical layer radio transmission, allowing for dynamic adjustment of modulation and coding schemes based on transmission requirements and radio conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If advanced modulation and transmission mechanisms (CDMA, OFDMA, QAM) are implemented to enhance physical layer radio transmission, then transmission reliability and adaptability are improved, but device complexity increases
Solution Approach 1:
The patent segments the feedback transmission into multiple physical channels (PUCCH, PUSCH, and physical sidelink feedback channel) with distinct functions and characteristics. Each channel is optimized for specific scenarios, allowing the system to achieve high reliability through channel diversity while managing complexity by assigning specialized roles to each channel type rather than using a single complex mechanism for all scenarios.
Solution Approach 2:
The patent implements dynamic selection of modulation and coding schemes (MCS) based on transmission requirements and radio conditions. The system can adaptively choose between different channels and modulation types (QAM schemes) depending on the current state, allowing it to maintain high reliability under varying conditions while avoiding the need to implement all complex mechanisms simultaneously in every transmission.
2Productivity
If dynamic adjustment of modulation and coding schemes is implemented based on transmission requirements and radio conditions, then transmission efficiency is improved, but control complexity increases
Solution Approach 1:
The patent employs feedback mechanisms where channel state information (CSI) is continuously monitored and used to adjust modulation and coding schemes. The system receives feedback about radio conditions and transmission performance, then dynamically adapts the MCS selection accordingly. This closed-loop approach improves transmission efficiency by optimizing parameters based on actual conditions while managing complexity through systematic feedback processing rather than exhaustive search.
Solution Approach 2:
The patent dynamically changes key transmission parameters including modulation order, coding rate, and resource allocation based on measured radio conditions and transmission requirements. By systematically adjusting these parameters according to established criteria and feedback, the system achieves high transmission efficiency without requiring complex ad-hoc decision-making, as the parameter changes follow defined rules and protocols.
Data Source
AI summary
A wireless device receives one or more configuration parameters including a plurality of sidelink feedback resources, where at least two sidelink feedback resources, of the plurality of sidelink feedback resources, are associated with different values for received signal power, and each of the at least two sidelink feedback resources are at least one of a time resource or a frequency resource. The wireless device selects, based on a received signal power of the different values for the received signal power, a sidelink feedback resource from the at least two sidelink feedback resources. The wireless device transmits a sidelink feedback signal, to a second wireless device, via the sidelink feedback resource.