Multi-Panel Power Reporting via Differential MAC-CE
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Solution Overview
Problem
The existing wireless communication systems face challenges in efficiently managing power headroom and maximum transmission power values for multiple panels in user equipment, leading to inefficiencies in resource allocation and increased latency.
Innovation Solution
A method for reporting power information, including power headroom and maximum transmission power values for each panel, is implemented, allowing for efficient power management by defining a transmission order and sum of transmission power across multiple panels, and is reported via a medium access control element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If power information is reported for each panel separately, then power management precision is improved, but payload size increases
Solution Approach 1:
The power information reporting is segmented by panel, with each panel having its own power headroom and maximum transmission power values reported separately through MAC-CE. This allows precise power management for each panel while organizing the data in a structured format that manages payload efficiency.
Solution Approach 2:
The patent introduces differential values for maximum transmission power relative to a reference panel, changing the parameter representation from absolute values for all panels to a reference-based differential approach. This reduces the payload size while maintaining the ability to precisely manage power across multiple panels.
2Productivity
If power headroom and maximum transmission power values are reported for multiple panels, then resource allocation efficiency is improved, but reporting complexity increases
Solution Approach 1:
The reporting structure is segmented into separate MAC-CE messages for each panel, with each message containing power headroom and maximum transmission power information. This segmentation allows the base station to efficiently allocate resources for each panel independently while keeping the reporting mechanism systematic and manageable.
Solution Approach 2:
The patent introduces a reference panel concept that acts as an intermediary for comparing maximum transmission power values across panels. By using differential values relative to the reference panel, the system simplifies the reporting complexity while maintaining comprehensive power information for resource allocation decisions.
3Measurement precision
If transmission power sum of all panels is reported, then power control accuracy is improved, but information overhead increases
Solution Approach 1:
The patent combines individual panel power information with the total transmission power sum of all panels in the reporting structure. This merging provides comprehensive power control accuracy by giving the base station both granular panel-level details and aggregate total power information, enabling precise power management decisions.
Solution Approach 2:
The patent represents maximum transmission power using differential values relative to a reference panel instead of absolute values for each panel. This parameter transformation reduces the information overhead while maintaining the ability to accurately control power across all panels by providing relative power relationships.
Data Source
AI summary
Proposed are a method for reporting power information in a wireless communication system and a device therefor. In detail, the method, performed by a terminal, comprises the steps of: receiving power report configuration information from a base station; and reporting power information to the base station on the basis of the power report configuration information, wherein the terminal comprises a plurality of panels, and the power information can comprise power headroom information regarding the plurality of panels and maximum transmission power information regarding the plurality of panels.