Power Headroom Reporting Modes for Uplink Power Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing power headroom reporting, which is crucial for optimizing data transmission and ensuring reliable communication in mobile networks, particularly in heterogeneous environments with varying cell types and traffic loads.
Innovation Solution
A mechanism for power headroom reporting is introduced, allowing wireless devices to selectively implement protocols based on specific criteria such as device capabilities, network configurations, and traffic characteristics, enabling more accurate power management and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If power headroom reporting is implemented in heterogeneous wireless networks with varying cell types and traffic loads, then power management accuracy and resource allocation efficiency improve, but device complexity and protocol implementation difficulty increase
Solution Approach 1:
The patent segments the power headroom reporting mechanism by defining different reporting modes (Type 1, Type 2, Type 3 PHR) tailored to specific transmission scenarios (PUSCH, PUCCH, SPS). Each type addresses specific network conditions and device capabilities, allowing the system to select appropriate reporting granularity without requiring full implementation of all reporting types, thus reducing device complexity while maintaining measurement precision.
Solution Approach 2:
The patent introduces dynamic reporting triggers based on power headroom thresholds, traffic conditions, and network configurations. Devices dynamically adjust reporting frequency and content based on current network state, enabling accurate power management in heterogeneous networks without requiring continuous high-complexity processing. The reporting behavior adapts to changing conditions, reducing overall system complexity while maintaining precision when needed.
2Productivity
If selective protocol implementation based on device capabilities and network configurations is introduced, then resource allocation efficiency improves, but system complexity and configuration difficulty increase
Solution Approach 1:
The patent applies local quality by configuring power headroom reporting parameters specifically for different device types, network scenarios, and traffic patterns. Each device receives customized reporting configurations based on its capabilities and operating conditions, enabling efficient resource allocation without requiring all devices to implement complex universal protocols. The configuration complexity is localized to specific scenarios rather than being universally applied.
Solution Approach 2:
The patent utilizes parameter changes to enable selective protocol implementation. By modifying reporting thresholds, frequencies, and formats based on device capabilities and network conditions, the system achieves efficient resource allocation across heterogeneous devices. Parameters such as powerHeadroomThreshold, reportingPeriod, and phr-Delay are dynamically adjusted, allowing simple devices to use simplified reporting while advanced devices provide detailed information, improving overall efficiency without uniformly increasing system complexity.
Data Source
AI summary
A wireless device receives one or more configuration parameters indicating one or more uplink power control sets, and a plurality of transmission configuration indicator (TCI) states for a cell. The wireless device receives an indication of two TCI states of the plurality of TCI states. The wireless device transmits, in response to the one or more configuration parameters not comprising a two-power-headroom-report-mode (twoPHRMode) parameter that indicates to report two power headroom values associated with two sounding reference signal (SRS) resource sets of the cell, a power headroom medium-access control (MAC) control element (CE) indicating one Type 1 power headroom value for the cell.