Terminal Antenna Insertion Loss Reporting for Channel Estimation
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Solution Overview
Problem
Different antenna positions in a terminal device cause varying transmission power to each antenna, leading to estimation errors in uplink and downlink channel quality assessment by network devices due to differing distances and losses from the Power Amplifier (PA).
Innovation Solution
The terminal device reports one-to-one correspondence first insertion loss values for each antenna, allowing the network device to accurately determine uplink and downlink channel quality by correcting for these losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the PA transmits signals at the same power, then the transmission power reaching each antenna is different due to different positions and losses, but this causes estimation error of uplink and downlink channel quality
Solution Approach 1:
The patent introduces insertion loss values as intermediary parameters to bridge the gap between PA output power and actual antenna transmission power. These insertion loss values act as mediators that compensate for the varying losses between PA and different antennas, enabling accurate channel quality estimation without requiring complex power control mechanisms.
Solution Approach 2:
The patent changes the parameter representation by explicitly modeling and reporting insertion loss values for each antenna. Instead of trying to equalize transmission power across different antennas, the system accepts varying power levels and compensates by introducing insertion loss as a correctable parameter, thereby maintaining measurement precision while simplifying the overall system.
2Measurement precision
If different antennas are located at different positions, then the transmission power reaching each antenna varies, but this results in estimation error for uplink and downlink channel quality
Solution Approach 1:
The patent implements a feedback mechanism where the terminal device measures and reports insertion loss values for each antenna to the network device. This feedback loop enables the network to compensate for the positional differences and loss variations, thereby maintaining accurate channel quality estimation despite the physical arrangement of antennas.
Solution Approach 2:
The patent performs preliminary measurement and reporting of insertion loss values before actual channel quality assessment. By obtaining these loss parameters in advance for each antenna, the system prepares the necessary correction data that will be used during channel quality estimation, ensuring accurate results without adding complexity to the main assessment process.
Data Source
AI summary
Embodiments of the present application provide a communication method and apparatus, a device, a storage medium, a chip, a product and a program. The method includes: a terminal device sends at least one first insertion loss value, wherein the at least one first insertion loss value is in one-to-one correspondence to at least one antenna used for sending an uplink reference signal.