Sub-Band Configuration for Same-Slot Full-Duplex Communications
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Solution Overview
Problem
Current communication protocols limit full duplex communication by restricting terminals to either downlink or uplink transmission/reception in specific slots, hindering the development of simultaneous data transmission and reception.
Innovation Solution
Configuring a subband with a frequency domain resource range that differs in transmission direction from the specified time unit, allowing terminals to perform both uplink and downlink operations within the same time slot through subband configuration information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal follows the current protocol to perform downlink reception only in downlink slots and uplink transmission only in uplink slots, then the transmission direction is simple and clear, but full duplex communication cannot be achieved and communication efficiency is limited
Solution Approach 1:
The patent divides the frequency domain resources into different subbands, where each subband can have independent transmission directions. Specifically, in a downlink slot, the terminal can receive downlink data in one subband while transmitting uplink data in another subband, enabling full duplex operation by segmenting the frequency spectrum into functionally independent regions
Solution Approach 2:
The patent applies different transmission direction configurations to different frequency subbands within the same time slot. Each subband can be independently configured as uplink, downlink, or flexible, allowing local optimization of transmission directions without affecting the entire bandwidth, thus enabling full duplex communication in specific subbands while maintaining simplicity in others
2Productivity
If the terminal performs simultaneous uplink and downlink operations in the same slot, then communication efficiency improves, but the transmission direction management becomes complex
Solution Approach 1:
The patent resolves the complexity of simultaneous uplink and downlink transmission by introducing a frequency domain dimension for direction differentiation. Instead of managing time-division or complex full-duplex coordination across the entire bandwidth, the system assigns different transmission directions to different frequency subbands, transforming the problem from time-domain or power-domain management to frequency-domain resource allocation
Solution Approach 2:
The patent introduces flexible subbands that can dynamically switch between uplink and downlink directions based on traffic demands and interference conditions. This dynamic configuration allows the system to adapt transmission directions in real-time, optimizing communication efficiency while managing complexity through standardized configuration mechanisms
Data Source
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AI summary
The present disclosure provides a sub-band configuration method and device. The sub-band configuration method comprises: sending sub-band configuration information, wherein the sub-band configuration information is used for configuring, for a terminal, a frequency domain resource range occupied by a first sub-band, the first sub-band is located in a specified time unit in the time domain, and the transmission direction of the information in the first sub-band is different from the transmission direction of the information in the specified time unit. According to the present disclosure, the frequency domain resource range occupied by the first sub-band can be configured for the terminal, the first sub-band is located in the specified time unit in the time domain, and the transmission direction of the information in the first sub-band is different from the transmission direction of the information in the specified time unit, so that the communication time delay is reduced and the feasibility and reliability of full-duplex communications are improved.