Uplink Transmit Power Adaptation for Full-Duplex Mode Switching
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Solution Overview
Problem
In full duplex communication systems, the reciprocity between uplink and downlink channels is compromised due to the use of independent transmit and receive antennas, leading to reduced reliability and performance of uplink transmissions, especially when switching between full and half duplex modes.
Innovation Solution
A method and apparatus for determining uplink transmission power based on target information such as slot format, slot type, or subband full duplex configuration, allowing the terminal to adjust transmit power according to current antenna configuration and spatial characteristics, thereby improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If full duplex mode is used with independent transmit and receive antennas, then spatial characteristics are different and reciprocity between uplink and downlink channels is broken, but uplink transmission reliability is reduced
Solution Approach 1:
The patent applies dynamics by enabling the terminal to dynamically determine uplink power parameters based on real-time target information (slot format, slot type, subband full duplex configuration) rather than using fixed power settings. This dynamic adaptation allows the system to maintain reliable uplink transmissions despite the broken reciprocity in full duplex mode by continuously adjusting power parameters according to current spatial characteristics and antenna configurations.
2Adaptability or versatility
If the network side device switches between full duplex mode and half duplex mode, then operational flexibility is improved, but uplink transmission reliability deteriorates due to mode switching
Solution Approach 1:
The patent implements feedback by having the terminal receive target information about the uplink transmission (including mode switching indications) and use this feedback to dynamically adjust uplink power parameters. This closed-loop approach ensures that when the network switches between full and half duplex modes, the terminal can promptly adapt its power settings to maintain transmission reliability without interruption.
3Ease of operation
If transmit power is determined without considering current antenna configuration, then power control simplicity is maintained, but uplink transmission reliability is reduced
Solution Approach 1:
The patent applies parameter changes by modifying the uplink power parameter determination process to incorporate target information about antenna configuration and spatial characteristics. Instead of using fixed or simplified power control, the system dynamically adjusts power parameters based on real-time changes in antenna configuration, slot formats, and full duplex settings, thereby maintaining reliability without excessive complexity.
Data Source
AI summary
This application discloses an uplink transmission transmit power determining method and apparatus, a terminal, and a network side device, and pertains to the field of communication technologies. The uplink transmission transmit power determining method in embodiments of this application includes: A terminal determines a target uplink power parameter of target uplink transmission based on target information of the target uplink transmission; and the terminal determines an uplink transmit power of the target uplink transmission based on the target uplink power parameter, where the target information includes at least one of the following: a slot format; a slot type; and subband full duplex configuration information or subband full duplex indication information.