Terminal Power Class Mapping for Duplex-Mode Transmission Power
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Solution Overview
Problem
The challenge of determining maximum transmission power in terminals supporting multiple duplex modes, such as simultaneous and non-simultaneous transmission-reception modes, due to differences in RF structure losses and power consumption.
Innovation Solution
Defining a mapping relation between duplex modes and power classes to indicate maximum transmission powers, allowing terminals to determine or be configured with appropriate power classes based on their duplex mode, using high-level signaling for communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a terminal supports multiple duplex modes (simultaneous and non-simultaneous transmission-reception), then the terminal's adaptability and coverage are enhanced, but the device complexity and power control difficulty increase due to different RF structure losses and power consumption in each mode
Solution Approach 1:
The patent applies parameter changes by introducing power class parameters that vary according to duplex mode. The terminal determines different power classes (e.g., first power class for simultaneous mode, second power class for non-simultaneous mode) based on the current duplex mode, thereby adapting the transmission power parameters to match the operational mode and resolve the complexity of power control across multiple modes
Solution Approach 2:
The patent segments the power control mechanism by dividing it into mode-specific power classes. Instead of a single unified power control system, the terminal maintains separate power class determinations for different duplex modes, allowing independent optimization and control of transmission power for each mode, thus reducing overall control complexity
2Measurement precision
If the terminal determines maximum transmission power separately for each duplex mode, then the power control precision is improved, but the signaling overhead and communication efficiency deteriorate
Solution Approach 1:
The patent applies universality by using a single power class parameter that serves multiple functions. This power class parameter simultaneously indicates the maximum transmission power for both simultaneous and non-simultaneous transmission-reception modes, eliminating the need for separate power indications for each mode and thereby reducing signaling overhead while maintaining precise power control
Data Source
AI summary
A power class determination method includes: a terminal determines a power class corresponding to a first duplex mode, wherein the first duplex mode comprises a simultaneous transmission-reception mode and/or a non-simultaneous transmission-reception mode, and the power class represents maximum transmission power of the terminal in different duplex modes.