PRACH-PUSCH Signal Mapping for Low-Latency Wireless Access
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Solution Overview
Problem
The increasing demand for higher communication capacity, reliability, and reduced latency in wireless communication systems, particularly in next-generation mobile broadband and massive machine type communications, has not been adequately addressed by existing radio access technologies.
Innovation Solution
A method and apparatus for signal transmission and reception in wireless communication systems, including hybrid beamforming techniques, self-contained slot structures, and efficient channel access procedures, are implemented to enhance communication efficiency and reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing radio access technology is used, then system simplicity is maintained, but communication capacity and reliability are insufficient for next-generation requirements
Solution Approach 1:
The patent segments the communication system into multiple access links (first access link for initial access, second access link for data transmission) with different modulation and coding schemes. This segmentation allows optimized reliability for each link type without requiring complete system redesign, resolving the contradiction between improved reliability and system complexity.
Solution Approach 2:
The patent implements dynamic adaptation by selecting different modulation orders and coding rates based on channel conditions and service requirements. The system dynamically adjusts transmission parameters to achieve target block error rates, enabling reliable communication without fixed complex configurations for all scenarios.
2Productivity
If higher communication capacity is achieved through advanced techniques, then data rate increases, but latency increases
Solution Approach 1:
The patent changes key transmission parameters including modulation order, coding rate, and resource allocation based on channel conditions and service requirements. By dynamically adjusting these parameters, the system achieves high communication capacity while minimizing latency through optimized transmission efficiency.
Solution Approach 2:
The patent performs preliminary channel estimation and quality assessment before data transmission to pre-determine optimal transmission parameters. This preliminary action enables the system to prepare appropriate modulation and coding schemes in advance, reducing processing delays and achieving both high capacity and low latency.
3Productivity
If millimeter wave frequencies are used, then communication capacity increases, but signal reliability deteriorates due to propagation challenges
Solution Approach 1:
The patent introduces reference signals as intermediaries to facilitate channel estimation and quality assessment at millimeter wave frequencies. These reference signals enable the receiver to accurately estimate channel conditions and provide feedback for adaptive modulation and coding, thereby maintaining signal reliability while utilizing high-capacity millimeter wave frequencies.
Solution Approach 2:
The patent implements feedback mechanisms where channel quality information is measured and reported back to the transmitter. This feedback enables closed-loop adaptive transmission, allowing the system to adjust modulation and coding schemes based on actual channel conditions, thus maintaining reliable communication at millimeter wave frequencies with high communication capacity.
Data Source
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AI summary
Embodiments of the present disclosure relates to a method and a device, the method comprising the steps of acquiring message A including a PRACH preamble and a PUSCH, and transmitting message A, wherein the PUSCH includes a DM-RS related to a DM-RS sequence, and the DM-RS sequence is related to a RAPID of the PRACH preamble.