Full-Duplex Receive Timing Adjustment for 5G Slot Conditions
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing transmission timing in full-duplex systems, particularly in 5G and beyond, which is crucial for enhancing communication efficiency and supporting increased device connectivity and advanced services.
Innovation Solution
The solution involves a method and apparatus for adjusting receive timing in wireless communication systems, using downlink control information (DCI) or media access control-channel elements (MAC CE) to identify and adjust reception timing based on conditions such as slot or symbol type, allowing simultaneous transmission and reception, and utilizing a validity period for timing adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex transmission is implemented to increase frequency efficiency, then communication capacity is improved, but transmission timing management becomes more complex
Solution Approach 1:
The patent segments the transmission timing management into distinct components: separate timing adjustment values for different slot types (first timing adjustment for first slot type, second timing adjustment for second slot type), and separate validity period indicators. This segmentation allows independent control of timing parameters for different transmission scenarios, simplifying the overall management complexity while maintaining full-duplex capability.
Solution Approach 2:
The patent implements dynamic timing adjustment by allowing the receiver to selectively apply different timing adjustment values based on the current slot type and validity period conditions. The timing adjustment is not fixed but adapts dynamically according to the received indication information, enabling flexible timing management that responds to changing transmission conditions in full-duplex operation.
2Productivity
If receive timing adjustment is implemented to optimize simultaneous transmission and reception, then communication efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent creates a universal timing adjustment mechanism that handles multiple functions through a single framework: it manages timing for both transmission and reception, applies to different slot types, and operates across varying validity periods. The indication information structure serves multiple purposes by encoding slot type identification, timing adjustment values, and validity period indicators in an integrated manner, reducing the need for separate signaling for each function.
Solution Approach 2:
The patent utilizes parameter changes to optimize timing adjustment signaling. By transmitting timing adjustment values as differential changes rather than absolute values, and by using compact encoding for validity period indicators, the signaling overhead is reduced. The receiver interprets these parameter changes in the context of current timing state and slot type, achieving efficient timing optimization with minimized signaling requirements.
Data Source
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AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Specifically, the disclosure related to apparatuses and methods for transmission timing in full-duplex systems in a wireless communication system. A method for receiving a downlink (DL) signal or channel associated with a reception timing procedure includes receiving first information for a receive timing adjustment value and second information for a condition. The method further includes identifying a DL reference timing and whether the condition is valid for reception in a slot. The method further includes receiving the DL signal or channel in the slot based on the receive timing adjustment value and the DL reference timing in case that the condition is valid and the DL reference timing in case that the condition is not valid.