Uplink Power Control for Channels Sharing a Common TCI State
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Solution Overview
Problem
Existing wireless communication systems face challenges in configuring power control parameters for uplink channels and reference signals sharing a common transmission configuration indicator (TCI) state, as different target UL performance metrics require different power control parameters, leading to inconsistent performance.
Innovation Solution
Techniques for providing power control parameters for uplink channels and reference signals sharing a common TCI state, including receiving and transmitting based on multiple power control configurations that account for individual UL performance metrics, such as UL reference signal received power (RSRP), signal to noise ratio (SNR), and signal to interference plus noise ratio (SINR).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single power control configuration is used for all uplink channels and reference signals sharing a common TCI state, then the device complexity is reduced, but the UL performance metrics (RSRP, SNR, SINR) cannot be individually optimized
Solution Approach 1:
The patent segments the power control configuration by creating separate power control parameter sets for different uplink channels and reference signals. Each uplink channel (PUCCH, PUSCH, SRS) and reference signal has its own dedicated power control configuration, allowing individual optimization of RSRP, SNR, and SINR metrics while maintaining manageable complexity through structured organization.
Solution Approach 2:
The patent applies local quality by allowing different power control parameters (such as pathLossReference, targetPower, powerControlAdjustment) to be specifically tailored for each uplink channel and reference signal type. This enables each component to have optimized power control characteristics suited to its specific performance requirements rather than using a uniform configuration.
2Reliability
If separate power control parameters are configured for each uplink channel and reference signal, then individual UL performance metrics can be satisfied, but the signaling overhead and configuration complexity increase
Solution Approach 1:
The patent implements universality by creating a standardized power control configuration structure that can be applied across multiple uplink channels and reference signals. The configuration framework uses common parameter definitions and structures that can be universally applied to PUCCH, PUSCH, and SRS, reducing the overall complexity while enabling individual optimization through instance-specific parameter values.
Solution Approach 2:
The patent applies preliminary action by pre-configuring power control parameters through higher-layer signaling (RRC configuration) before actual uplink transmissions occur. This allows the network to establish appropriate power control settings in advance for each uplink channel and reference signal, ensuring performance metrics are satisfied from the outset without requiring complex real-time adjustments.
3Reliability
If power control parameters are optimized for specific UL performance metrics, then communication reliability improves, but the system requires more sophisticated power control mechanisms
Solution Approach 1:
The patent applies parameter changes by systematically varying power control parameters (such as pathLossReference, targetPower, powerControlAdjustment, and alpha values) to optimize different UL performance metrics. Each uplink channel and reference signal has its specific parameter set tuned to achieve desired RSRP, SNR, or SINR levels, enabling reliable communication through precise parameter optimization without requiring fundamentally new control mechanisms.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for providing power control parameters for channels and/or reference signals sharing a same common transmission configuration indicator (TCI) state. A method that may be performed by a user equipment (UE) includes measuring a path loss at a user equipment, receiving, from a network, a plurality of power control configurations, wherein: each power control configuration of the plurality of power control configurations comprises a respective plurality of power control parameters, and each power control configuration of the plurality of power control configurations applies to a respective uplink channel or reference signal object associated with a common transmission configuration indication (TCI) state, and transmitting at least one uplink channel or reference signal object at a transmission power that is based on the measured path loss and at least one of the power control configurations of the plurality of power control configurations.