SBFD Uplink Power Control and TCI State Configuration
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Solution Overview
Problem
Current wireless communication systems face challenges in managing uplink transmissions efficiently, particularly in complex environments where signal attenuation and blockage occur, leading to issues with speed, data capacity, power consumption, reliability, and coverage.
Innovation Solution
The implementation of a method that configures and manages uplink transmissions using sub-band full duplex (SBFD) and non-SBFD symbols by providing transmission parameters, including power control parameters and unified transmission configuration indicators (TCI), to enable simultaneous transmission and reception on different frequency resources within the same slot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate uplink power control parameters are configured for SBFD and non-SBFD symbols, then uplink transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the uplink power control parameters into separate configurations for SBFD symbols and non-SBFD symbols. The network device configures different power control parameter sets (first power control parameters for SBFD, second power control parameters for non-SBFD), allowing differentiated power control strategies for different symbol types, thereby improving uplink transmission reliability while managing device complexity through structured parameter separation.
Solution Approach 2:
The patent applies local quality by assigning different power control characteristics to different symbol types. SBFD symbols receive specific power control parameters optimized for full-duplex operation, while non-SBFD symbols receive parameters optimized for traditional half-duplex operation. This localized optimization ensures each symbol type transmits with appropriate power characteristics for its specific operational context.
2Productivity
If simultaneous transmission and reception on different frequency resources is enabled, then network resource utilization is improved, but signal interference increases
Solution Approach 1:
The patent enables simultaneous uplink and downlink transmissions by transitioning from time-division to frequency-division within the same time slot. SBFD symbols allocate different frequency resources for uplink and downlink, allowing parallel transmissions in the frequency dimension while maintaining time synchronization. This dimensional transition improves network resource utilization by eliminating idle time periods while managing interference through frequency separation.
Solution Approach 2:
The patent segments the frequency spectrum into distinct uplink and downlink sub-bands within SBFD symbols. By dividing the available bandwidth into separate frequency resources for uplink transmission and downlink reception, the system enables simultaneous operation while minimizing self-interference through frequency isolation. This segmentation allows efficient spectrum utilization while controlling the harmful effects of full-duplex operation.
Data Source
AI summary
Certain aspects of the present disclosure provide a method for wireless communications at a user equipment (UE). The UE may receive a configuration from a base station (BS). The configuration may indicate transmission parameters associated with different symbols such as sub-band full duplex (SBFD) symbols and non-SBFD symbols. For example, the transmission parameters may indicate power control parameters (e.g., a received power target value, a power control factor value, a closed-loop power control value) and a unified transmission configuration indicator (TCI) (e.g., a joint uplink and downlink TCI state, separate uplink and downlink TCI states). The UE may transmit uplink transmissions to the BS, in accordance with the transmission parameters.