Uplink Power Control Parameter Indication for Multi-Panel Wireless Transmission
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Solution Overview
Problem
Current wireless communication systems lack effective methods for indicating and updating uplink power control parameters, particularly in multi-panel transmission scenarios, which affects power consumption and communication efficiency.
Innovation Solution
The described techniques provide methods for jointly or separately updating uplink transmission configuration indicators and power control parameters for physical downlink control channels, using control messages to manage power control settings across multiple transmission and reception points, enhancing power control precision and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current techniques are used to indicate uplink power control parameters, then device complexity is reduced, but power control precision deteriorates in multi-panel transmission scenarios
Solution Approach 1:
The control message is segmented into multiple fields: a first field indicating a first uplink power control parameter for a first panel, and a second field indicating a second uplink power control parameter for a second panel. This segmentation allows independent control of power parameters for different panels, improving power control precision while keeping each individual field simple.
Solution Approach 2:
The patent extends the power control parameter indication from a single-dimension approach (one parameter for all panels) to a multi-dimensional approach by introducing panel-specific parameters. This dimensional expansion enables precise power control for each panel independently without requiring overly complex control mechanisms.
2Measurement precision
If separate control messages are used for each power control parameter, then power control precision is improved, but communication overhead increases
Solution Approach 1:
Multiple power control parameters for different panels are merged into a single control message. The message contains a first field for the first panel's power control parameter and a second field for the second panel's power control parameter, allowing simultaneous transmission of multiple parameters in one message, thus reducing communication overhead while maintaining precision.
Solution Approach 2:
The control message is designed with multi-functionality to handle power control for multiple panels simultaneously. By incorporating multiple parameter fields within a single message structure, it serves the universal purpose of controlling power for different panels without requiring separate specialized messages for each.
3Productivity
If uplink power control parameters are updated frequently, then communication efficiency is improved, but power consumption increases
Solution Approach 1:
The patent applies local quality by providing specific power control parameters tailored to each panel's transmission requirements. Instead of using a single generic parameter that would require frequent updates to accommodate all scenarios, panel-specific parameters allow for more accurate and stable power control, reducing the need for frequent updates and thereby lowering power consumption.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a control message associated with an uplink transmission from one or more antenna panels. In some cases, the control message may include a first indication associated with an uplink transmission configuration indicator and a second indication of an uplink power control parameter set identifier associated with the first indication. In some cases, the control message may include a bit, where a value of the bit indicates whether an uplink transmission configuration indicator is included in the control message or an uplink power control parameter set identifier is included in the control message. The UE may then communicate with the base station based on receiving the control message.