Training Signal Scaling for Multi-Terminal Subcarrier Allocation
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Solution Overview
Problem
Existing wireless communication technologies face challenges in efficiently using bandwidths to simultaneously transmit data between multiple terminals and base terminals, particularly in high-density environments.
Innovation Solution
A wireless communication method and terminal that utilize a training signal transmitted on sub-frequency bands allocated by a base wireless communication terminal, with adjustable scaling values for the training signal based on allocated subcarriers, allowing efficient data transmission and reception among multiple terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple terminals transmit data simultaneously using existing wireless standards, then data transmission capacity increases, but frequency efficiency deteriorates due to inadequate training signal management
Solution Approach 1:
The frequency band is divided into multiple sub-frequency bands, and each terminal is allocated specific subcarriers within these bands. This segmentation allows multiple terminals to transmit simultaneously without interfering with each other, improving both data transmission capacity and frequency efficiency
Solution Approach 2:
Different terminals are assigned different sub-frequency bands and subcarrier allocations based on their specific communication needs. This localized resource allocation optimizes frequency efficiency for each terminal while maintaining overall system capacity
2Ease of operation
If training signal magnitude varies across different terminals, then simultaneous communication is simplified, but Automatic Gain Control accuracy deteriorates
Solution Approach 1:
The patent applies a scaling factor to the training signal of each terminal based on its allocated subcarrier count, ensuring all terminals transmit with uniform magnitude. This creates equipotential conditions for simultaneous communication while maintaining accurate Automatic Gain Control at the receiver
Solution Approach 2:
The scaling factor is adjusted according to the number of subcarriers allocated to each terminal. By dynamically changing the training signal magnitude parameter based on allocation size, the system achieves both ease of simultaneous communication and precision in Automatic Gain Control
3Reliability
If subcarrier allocation is optimized for each terminal, then frequency efficiency improves, but system complexity increases
Solution Approach 1:
The base terminal implements a universal subcarrier allocation mechanism that handles multiple terminals with different requirements through a single standardized process. This multi-functional approach improves frequency efficiency without proportionally increasing system complexity
Data Source
AI summary
A wireless communication terminal is disclosed. The wireless communication terminal includes a transceiver configured to transmit/receive a wireless signal; and a processor configured to control an operation of the wireless communication terminal. The transceiver transmits a training signal to a base wireless communication terminal based on a sub-frequency band allocated from the base wireless communication terminal, and transmits data to the base wireless communication terminal through the sub-frequency band allocated from the base wireless communication terminal. The training signal is used, by the base wireless communication terminal, for receiving the data from the wireless communication terminal.