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 due to different distances and losses from the Power Amplifier (PA), affecting network device accuracy in channel quality estimation.
Innovation Solution
The terminal device reports one-to-one correspondence of first insertion loss values with each antenna for transmitting uplink reference signals, enabling the network device to correct and improve the accuracy of uplink and downlink channel quality estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the PA transmits signals at the same power to all antennas, then the transmission power is uniform, but the transmission power reaching each antenna is different due to different distances and losses, causing estimation error of channel quality
Solution Approach 1:
The patent introduces insertion loss parameters for each antenna to characterize the power loss from PA to antenna. By measuring and reporting these insertion loss values, the system enables the network device to compensate for the power differences and accurately estimate channel quality, thus resolving the contradiction between uniform power transmission and accurate measurement.
2Measurement precision
If the terminal device reports insertion loss values for each antenna, then the network device can accurately determine channel quality, but the signaling overhead and system complexity increase
Solution Approach 1:
The patent performs preliminary measurement of insertion loss values during device initialization or configuration phase. These pre-measured values are stored and reused for subsequent channel quality estimations, avoiding the need for continuous measurement and reporting, thus reducing signaling overhead and system complexity while maintaining measurement precision.
3Adaptability or versatility
If different antennas are located at different positions, then the terminal device can achieve diverse transmission paths, but the distances and losses from PA to different antennas vary, causing estimation error
Solution Approach 1:
The patent assigns specific insertion loss parameters to each antenna based on its local characteristics (position, distance from PA, transmission path). This localized parameter assignment allows the system to account for the unique properties of each antenna while maintaining the benefits of diverse transmission paths, thus resolving the contradiction between adaptability and measurement precision.
Data Source
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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 comprises: 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.