Reference Signal Transmission via Antenna Path Loss Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices face challenges in efficiently transmitting reference signals due to varying path losses across multiple antennas, which affects downlink bandwidth allocation and overall data reception performance.
Innovation Solution
The electronic device is configured with a communication processor that controls the transmission of reference signals through a first antenna with minimal path loss, and adjusts the reference signal based on signals received via other antennas to optimize transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reference signals are transmitted via multiple antennas with different path losses, then channel estimation capability is improved, but power attenuation varies significantly reducing allocation efficiency
Solution Approach 1:
The patent adjusts the transmission power parameter of reference signals based on the specific path loss characteristics of each antenna. By changing the power parameter dynamically according to antenna conditions, the system compensates for varying path losses and ensures consistent signal quality across all antennas, thereby improving downlink bandwidth allocation efficiency while maintaining accurate channel estimation.
2Adaptability or versatility
If transmission circuits are connected to multiple reception antennas via switches, then antenna switching capability is improved, but path loss varies significantly affecting signal quality
Solution Approach 1:
The patent applies local quality by configuring each antenna's reference signal transmission independently according to its specific path loss characteristics. Instead of treating all antennas uniformly, the system tailors the transmission power and configuration for each antenna location, compensating for local variations in signal attenuation and ensuring consistent signal quality across the antenna array.
3Adaptability or versatility
If reference signal power differs by certain magnitude across antennas, then transmission flexibility is improved, but downlink resource allocation performance degrades
Solution Approach 1:
The patent implements feedback mechanisms where the base station estimates channel conditions based on received reference signals from each antenna and uses this information to optimize downlink resource allocation. The system continuously monitors the effectiveness of reference signal transmissions and adjusts transmission parameters accordingly, creating a closed-loop control system that maintains high allocation efficiency while preserving transmission flexibility.
Data Source
AI summary
An example electronic device includes a communication processor; at least one radio frequency integrated circuit (RFIC) connected to the communication processor; at least one radio frequency front-end (RFFE) circuit connected to the at least one RFIC and configured to process a transmission signal; and a plurality of antennas connected through the at least one RFFE circuit. The communication processor may control to transmit, at a first time point when a reference signal is to be transmitted through a first antenna from among the plurality of antennas, the reference signal to a base station through the first antenna; and transmit, at a second time point when the reference signal is to be transmitted through a second antenna from among the plurality of antennas, a reference signal adjusted at least based on a signal received through the second antenna to the base station through the first antenna.