Full-Duplex Power Control for Uplink Interference
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Solution Overview
Problem
Current wireless communication systems, particularly those using half-duplex schemes, experience propagation loss, fading characteristics, and latency, which limit their ability to support increased channel capacity, especially across diverse frequency bandwidth spectra such as sub-6 GHz and millimeter wave frequencies.
Innovation Solution
The implementation of full-duplex communication methods in user equipment (UE) that allow simultaneous downlink and uplink signal transmission and reception over a single channel, with power control mechanisms to determine optimal transmit power based on signal-to-noise ratio and resource allocation, enabling efficient power management and reduced latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If half-duplex schemes are used for data transmission, then distinct channels can be allocated for uplink and downlink signaling, but propagation loss and fading characteristics increase, limiting channel capacity
Solution Approach 1:
The patent merges uplink and downlink transmissions into a single full-duplex channel, allowing simultaneous bidirectional communication. This combines the functionality of separate uplink and downlink channels into one unified channel, increasing channel capacity while maintaining signal quality through coordinated power control and interference management techniques
2Productivity
If frequency division duplex is used to isolate uplink and downlink data traffic, then channel capacity increases, but propagation loss and fading characteristics worsen
Solution Approach 1:
The patent dynamically adjusts transmission parameters including power levels, resource allocation, and modulation schemes based on channel conditions. By changing these parameters in real-time, the system optimizes both channel capacity and signal quality, overcoming the limitations of fixed frequency division duplex configurations
3Productivity
If time division duplex is used for transmission and reception, then uplink and downlink traffic can be isolated, but latency increases due to time slot allocation
Solution Approach 1:
The patent enables continuous bidirectional communication by allowing uplink and downlink transmissions to occur simultaneously in the same time-frequency resources. This eliminates the time gaps and switching delays inherent in time division duplex, achieving continuous useful action in both directions and reducing communication latency
Data Source
AI summary
Methods, systems, and devices for wireless communications that support power control in full duplex communication are described. In some wireless communications systems, a user equipment (UE) may experience antenna isolation for communication of downlink and uplink data traffic. Based on the antenna isolation, the UE may realize an increased channel capacity for full-duplex communication. As part of the full-duplex communication, the UE may identify characteristics of a potential downlink signal on formatted slots of the channel. The UE may determine an uplink transmit power control configured to account for the characteristics. The determination may include a configured transmit power control for beamformed signaling at the UE, and may be based on signal reception quality for potential downlink transmissions. Based on the determination, the UE may either perform uplink transmission on a resource block allocation of the formatted slots or forgo uplink transmission.