Full-Duplex Transmission Timing Across Slot-Specific Configurations
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing transmission timing in full-duplex operations, particularly in 5G/NR systems, where simultaneous transmission and reception can lead to interference and alignment issues, especially with varying propagation delays and beamforming techniques.
Innovation Solution
A method and apparatus for determining transmission timing configurations in full-duplex systems by receiving and processing information about different subsets of slots, evaluating conditions for valid transmission, and applying appropriate transmission timing configurations based on these conditions to manage uplink and downlink signals effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If simultaneous transmission and reception are performed in full-duplex operations, then data transmission capacity is improved, but interference and alignment issues occur
Solution Approach 1:
The patent segments the set of slots into a first subset and a second subset, with different transmission timing configurations applied to each subset. This segmentation allows independent control of timing parameters for different slot groups, enabling the system to maintain reliable timing alignment while supporting full-duplex operations across different time resources.
Solution Approach 2:
The patent introduces dynamic switching between first and second transmission timing configurations based on whether a slot belongs to the first or second subset. This dynamic adaptation of timing parameters allows the system to optimize for both full-duplex capacity and timing alignment reliability under varying operational conditions.
2Reliability
If different transmission timing configurations are applied to different slot subsets, then timing alignment is improved, but system complexity increases
Solution Approach 1:
The patent establishes that the second transmission timing configuration parameters are derived from the first transmission timing configuration parameters through specific mathematical relationships. This universal derivation approach allows the system to maintain two different timing configurations while reducing configuration management complexity, as the second configuration can be automatically generated from the first rather than independently configured.
3Object-affected harmful factors
If transmission timing is adjusted for full-duplex operations, then interference is minimized, but transmission efficiency decreases
Solution Approach 1:
The patent applies different transmission timing configurations locally to different slot subsets rather than uniformly across all slots. The first timing configuration optimizes for interference minimization in slots where full-duplex operations are performed, while the second timing configuration optimizes for transmission efficiency in other slots. This localized optimization allows the system to reduce interference where necessary while maintaining high efficiency where possible.
Data Source
AI summary
Methods and apparatuses for transmission timing in full-duplex wireless communication systems. A method for transmitting an uplink (UL) signal or channel associated with a transmission timing procedure includes receiving first information for first parameters of a first transmission timing configuration associated with a first subset of slots from a set of slots on a cell, second information for second parameters of a second transmission timing configuration associated with a second subset of slots from the set of slots on the cell, and third information for a condition. The method further includes determining whether the condition is valid for transmission in a slot from the second subset of slots and transmitting the UL signal or channel in the slot based on the first transmission timing configuration when the condition is valid and the second transmission timing configuration when the condition is not valid.