Terminal Frame Structure Adaptation for High-Frequency Multi-Carrier Signals
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Solution Overview
Problem
In higher frequency bands, multi-carrier signals face issues such as non-linearity of amplifiers, increased Peak-to-Average Power Ratio (PAPR), and reduced propagation due to phase noises and reflection losses, making them less suitable for efficient communication.
Innovation Solution
A terminal and base station configuration that adjusts the frame structure of multi-carrier signals by altering subcarrier spacing, resource blocks, CP ratio, and scheduling units to better suit higher frequency bands, reducing PAPR and improving frequency utilization efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If multi-carrier signal is used in higher frequency band, then data transmission speed is improved, but PAPR increases and amplifier non-linearity worsens
Solution Approach 1:
The patent changes the frame structure parameters (subcarrier spacing, CP ratio, resource blocks) specifically for higher frequency bands to reduce PAPR and mitigate amplifier non-linearity while maintaining high data transmission speed
2Speed
If multi-carrier signal is used in higher frequency band, then data transmission speed is improved, but phase noise increases
Solution Approach 1:
The patent adjusts subcarrier spacing and cyclic prefix parameters in the frame structure to reduce the impact of phase noise on signal quality while maintaining high data transmission speed in higher frequency bands
3Speed
If multi-carrier signal is used in higher frequency band, then data transmission speed is improved, but signal propagation loss increases
Solution Approach 1:
The patent optimizes resource block allocation and subcarrier spacing to improve signal efficiency and reduce propagation loss in higher frequency bands while maintaining high data transmission speed
4Device complexity
If conventional frame structure is used in higher frequency band, then system complexity is reduced, but communication efficiency decreases
Solution Approach 1:
The patent applies different frame structure configurations specifically tailored for higher frequency bands, making the system adaptive to frequency-specific characteristics while maintaining overall system efficiency
Solution Approach 2:
The patent introduces dynamic frame structure selection that adapts to different frequency bands, allowing the system to optimize communication efficiency in higher frequencies without overly complicating the overall system architecture
Data Source
AI summary
A terminal includes a communication unit configured to transmit and receive a multi-carrier signal in a frequency band equal to or higher than a predetermined frequency, and a control unit configured to determine a first frame structure of the multi-carrier signal, wherein in the first frame structure, at least one of a subcarrier spacing and a number of resource blocks in a maximum channel bandwidth, a CP (cyclic prefix) ratio, and a time unit or a frequency unit of scheduling is different from a second frame structure of the multi-carrier signal in a frequency band equal to or lower than the predetermined frequency.