Reference Signal Power Parameter Signaling for Accurate RSRP
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Solution Overview
Problem
In wireless communication networks, power boosting of reference signals for signal quality measurements can lead to inaccurate signal strength estimation, resulting in incorrect inclusion or exclusion of transmission points, due to the measured power level differing from the actual received power.
Innovation Solution
Introducing an additional signaling power parameter in the CSI-RS configuration to account for power adjustments, which is signaled to the UE via the RRC protocol, allowing for accurate calculation of signal-specific characteristics like RSRP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If power boosting is applied to reference signals for signal quality measurements, then measurement accuracy is improved, but the measured power level differs from actual received power causing incorrect signal strength estimation
Solution Approach 1:
The patent introduces a power parameter as an intermediary element that mediates between the boosted reference signal and the actual received power. This parameter carries information about the power adjustment applied to the reference signal, allowing the UE to compensate for the boosting effect and derive accurate signal strength measurements. The power parameter acts as a bridge that preserves actual signal strength information despite power boosting being applied.
2Measurement precision
If power parameter is signaled to UE via RRC protocol, then signal strength estimation accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent utilizes existing RRC signaling parameters and configures them to convey power adjustment information. By repurposing or extending existing parameter structures in the RRC protocol rather than introducing entirely new signaling elements, the patent reduces the increase in signaling overhead while still providing necessary power parameter information to the UE for accurate signal strength estimation.
Data Source
AI summary
Embodiments of the present disclosure describe techniques and configurations for handling signal quality measurements by a wireless device in a wireless network environment, particularly in a coordinated transmission environment. An apparatus may include computer-readable media having instructions and one or more processors coupled with the media and configured to execute the instructions to generate a power parameter corresponding to a power adjustment associated with a reference signal, provide the reference signal generated based in part on the generated power parameter to a wireless device, and provide the power parameter to transmission points operating in the coordinated transmission environment. Each of the transmission points may be configured to communicate the power parameter to the wireless device, and the wireless device may be configured to determine, based at least in part on the power parameter, a power characteristics associated with a channel in which the reference signal is provided.