Wireless Device Power Headroom Reporting Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless devices face inefficiencies in calculating and reporting power headroom values due to the complexity of managing multiple transmission and reception points (TRPs) and transmission configuration indicator (TCI) states, leading to resource wastage and increased computational burdens.
Innovation Solution
The wireless device determines and sends power headroom reports based on the quantity of activated TCI states, calculating a single or multiple power headroom values depending on the number of activated states, thereby conserving resources by limiting calculations when only a single TCI state is active.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple TCI states are activated for multiple TRPs, then the wireless device can support multiple transmission and reception points, but the computational burden and resource consumption increase due to calculating multiple power headroom values
Solution Approach 1:
The patent applies dynamics by making the power headroom reporting behavior adaptive to the current TCI state activation status. The wireless device dynamically adjusts its reporting behavior based on whether one or multiple TCI states are activated, switching between single-value and multi-value reporting modes as needed, rather than using a fixed reporting mechanism
Solution Approach 2:
The patent changes the parameter of power headroom reporting from a fixed single-value format to a variable format that can be either single-value or multi-value based on the number of activated TCI states. This parameter change allows the system to adapt the reporting granularity to match the actual transmission configuration complexity
2Measurement precision
If power headroom calculations are performed for multiple TCI states, then accurate power reporting is achieved, but resources are wasted when only a single TCI state is active
Solution Approach 1:
The patent applies partial action by performing power headroom calculations for only the necessary number of TCI states. When a single TCI state is activated, only one power headroom value is calculated and reported. When multiple TCI states are activated, multiple power headroom values are calculated and reported. This avoids the excessive calculation of power headroom values for inactive TCI states
Solution Approach 2:
The system dynamically adjusts the number of power headroom values calculated and reported based on the current activation status of TCI states, optimizing the balance between measurement precision and resource consumption according to actual system conditions
3Adaptability or versatility
If the wireless device always reports multiple power headroom values, then all possible TRP configurations are covered, but signaling overhead increases unnecessarily
Solution Approach 1:
The patent applies partial action by reporting only the necessary number of power headroom values corresponding to the actually activated TCI states. Instead of always reporting multiple values to cover all possible configurations, the device reports exactly what is needed for the current configuration, reducing signaling overhead while maintaining adaptability
Data Source
AI summary
Multiple transmission reception points (multi-TRP) and single TRP modes may be enabled in a wireless device. By activating one or more transmission configuration indicator (TCI) states, a base station may dynamically switch the wireless device between the Multi-TRP and single TRP modes. A quantity of power headroom values in a power headroom report (PHR), sent to the base station, may be based on the quantity of active TCI states.