Dynamic MPR Table Updates for Accurate Power Headroom Reporting
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in power management due to static maximum power reduction (MPR) tables, which can lead to inaccurate power headroom reports and reduced power efficiency, especially when characteristics at the user equipment (UE) change over time.
Innovation Solution
The UE and base station exchange signaling for dynamic MPR updates, where the UE requests resources for channel measurements, updates the MPR table based on these measurements, and transmits a power headroom report, enabling more accurate power estimation and efficient power utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If static MPR tables are used, then device complexity is reduced, but power estimation accuracy deteriorates
Solution Approach 1:
The patent implements dynamic MPR table updates by enabling the UE to request and perform channel measurements periodically or triggered by network indications. The MPR table is no longer static but evolves based on actual channel conditions, allowing the UE to adapt power reduction values to current network conditions and maintain accurate power estimation while managing complexity through structured update procedures.
Solution Approach 2:
The patent establishes a feedback mechanism where the UE reports power headroom information to the network entity, and the network provides indications to trigger MPR table updates. This closed-loop feedback system ensures that power estimation remains accurate by continuously monitoring actual power usage conditions and adjusting the MPR table accordingly, resolving the contradiction between accuracy and complexity.
2Loss of energy
If dynamic MPR updates are implemented, then power efficiency is improved, but system latency increases
Solution Approach 1:
The patent implements periodic channel measurements and MPR table updates at configured intervals or upon network indication. This periodic action allows the system to maintain power efficiency through dynamic updates while controlling latency by establishing regular update cycles rather than continuous updates, balancing energy savings with response time requirements.
Solution Approach 2:
The patent enables the network to provide advance indications that trigger UE actions for channel measurements and MPR table updates before actual power optimization is needed. This preliminary action allows the UE to prepare updated power parameters in advance, reducing the impact of latency when power optimization must be applied immediately.
3Measurement precision
If channel measurements are performed frequently, then power estimation accuracy is improved, but energy consumption increases
Solution Approach 1:
The patent implements selective channel measurements based on network indications and configured triggers rather than continuous measurements. The UE performs channel measurements only when needed - triggered by network indications, periodic schedules, or power headroom report requirements - achieving sufficient measurement accuracy for effective power optimization while significantly reducing overall energy consumption compared to continuous monitoring.
Data Source
AI summary
Methods, systems, and devices for including power reporting for network power modification are described. That is, a user equipment (UE) and a base station may exchange signaling supporting an MPR update at the UE. In some examples, the UE may transmit, to the base station, a request for resources for performing channel measurements in accordance with a power reduction update associated with the UE. In response, the UE may receive, from the base station, an indication of a set of resources. In some examples, the UE may perform one or more channel measurements using the set of resources based on receiving the indication of the set of resources. In such examples, the UE may transmit, to the base station, a report indicating one or more power parameters associated with the power reduction update based on the one or more channel measurements.