DU Slot Interpretation for Full-Duplex Scheduled Entities
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Solution Overview
Problem
Existing wireless communication systems face challenges in minimizing self-interference in full-duplex transmissions, particularly for non-SBFD capable devices, which can lead to undefined behavior and reduced data transfer efficiency.
Innovation Solution
Implementing a scheduling entity that configures downlink-uplink (DU) symbols within a same carrier bandwidth for scheduled entities, defining their behavior in sub-band full-duplex (SBFD) environments, enabling simultaneous data transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If non-SBFD capable devices operate in SBFD environments without defined behavior, then device compatibility is maintained, but data transfer efficiency deteriorates due to undefined behavior
Solution Approach 1:
The patent applies parameter changes by modifying the slot format indication parameters to include specific configurations for non-SBFD capable devices. The scheduling entity transmits slot format indications that define specific uplink and downlink symbol patterns, transforming the ambiguous operational state into a defined parameter set that non-SBFD devices can interpret and execute efficiently
Solution Approach 2:
The patent introduces an intermediary mechanism through the scheduling entity that mediates between SBFD transceivers and non-SBFD capable devices. The scheduling entity translates and coordinates slot formats, acting as an intermediary that enables seamless interaction between full-duplex and half-duplex devices, ensuring both compatibility and efficient data transfer
2Productivity
If DU symbols are configured for simultaneous downlink and uplink transmissions, then spectrum utilization is improved, but interference management becomes more complex
Solution Approach 1:
The patent applies segmentation by dividing the slot into distinct downlink symbols, uplink symbols, and flexible symbols. This segmentation allows simultaneous downlink and uplink transmissions in different symbol periods while managing interference through clear temporal separation. The DU symbol configuration segments the carrier bandwidth into sub-bands for different transmission directions
Solution Approach 2:
The patent implements dynamics through flexible slot formats that can be dynamically configured and reconfigured based on traffic conditions. The slot format indications allow the system to adaptively switch between different DU symbol patterns, enabling dynamic interference management while maintaining high spectrum utilization. The configurable nature allows the system to optimize for different interference scenarios
Data Source
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AI summary
Aspects of the disclosure relate to obtaining a duplex mode of a scheduled entity, selecting a downlink-uplink (DU) slot interpretation to be applied by the scheduled entity to a slot including a DU symbol based on the duplex mode of the scheduled entity, and transmitting the DU slot interpretation to the scheduled entity. The DU symbol may be configured to include a downlink transmission and an uplink transmission within a same carrier bandwidth. Other aspects relate to receiving a message, indicating that the slot is formatted with a DU symbol, selecting a DU slot interpretation to be applied to the slot including the DU symbol based on a duplex mode of the scheduled entity, and applying the DU slot interpretation to the slot. Other aspects, examples, and features are also claimed and described.