Uplink Transmission Signal Duration Adjustment for NR-U Overlap Management
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Solution Overview
Problem
New Radio (NR) systems do not support unlicensed frequency bands, and in NR-U, uplink transmissions may overlap due to a second signal, lacking methods to manage these overlaps effectively, which hinders regulatory compliance and transmission efficiency.
Innovation Solution
A method and apparatus for terminal equipment to receive second indication information to adjust the duration of a second signal corresponding to a second uplink transmission, allowing for adjusted transmission to ensure non-overlap or overlap with a first uplink transmission, thereby improving transmission efficiency and compliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If NR-U uses unlicensed frequency bands to enable uplink transmission, then spectrum utilization is improved, but signal overlap and regulatory compliance issues arise
Solution Approach 1:
The patent applies dynamics by making the second signal duration adjustable rather than fixed. The terminal equipment dynamically adjusts the duration of the second signal based on whether it overlaps with the first uplink transmission, allowing the system to adapt to different transmission scenarios and ensure regulatory compliance while maintaining spectrum utilization efficiency.
Solution Approach 2:
The patent changes the parameter of signal duration by introducing adjustable duration for the second signal. The network device can configure different duration values for the second signal, and the terminal equipment uses these configured values to determine transmission timing, thereby resolving the overlap issue while maintaining productivity.
2Reliability
If the second signal duration is extended to meet regulatory requirements, then compliance is improved, but transmission efficiency deteriorates due to potential overlaps
Solution Approach 1:
The system dynamically adjusts the second signal duration based on actual transmission conditions. When the second signal would cause overlap with the first uplink transmission, the duration is reduced or adjusted accordingly. This dynamic adjustment ensures regulatory compliance is met only when necessary, while avoiding unnecessary duration extensions that would reduce transmission efficiency.
Solution Approach 2:
The patent implements parameter changes by allowing the second signal duration to be configured and adjusted based on transmission scenarios. The network device provides indication information about the duration, and the terminal equipment adapts the duration parameter to prevent overlaps, thereby maintaining both compliance and efficiency.
3Productivity
If the second signal duration is reduced to avoid overlaps, then transmission efficiency is improved, but regulatory compliance may be compromised
Solution Approach 1:
The system dynamically determines the appropriate second signal duration by checking for potential overlaps with the first uplink transmission. When no overlap is detected, the full duration can be used to ensure compliance. When overlap is detected, the duration is dynamically reduced to avoid interference. This dynamic approach ensures both efficiency and compliance are achieved simultaneously.
Solution Approach 2:
The patent uses parameter changes by configuring the second signal duration based on transmission conditions. The network device provides indication information that allows the terminal equipment to adjust the duration parameter appropriately, ensuring regulatory compliance is maintained only when necessary, while maximizing transmission efficiency in overlap-free scenarios.
4Adaptability or versatility
If NR-U implements flexible uplink transmission timing, then adaptability is improved, but system complexity increases due to signal overlap management
Solution Approach 1:
The patent segments the uplink transmission into two distinct parts: the first signal and the second signal with adjustable duration. This segmentation allows independent management of each signal's timing and duration, simplifying the overall complexity while maintaining flexibility. The terminal equipment processes each signal separately based on configured parameters, reducing the cognitive load of managing overlapping transmissions.
Solution Approach 2:
The system applies preliminary action by having the network device provide indication information about the second signal duration before the terminal equipment needs to transmit. This advance configuration allows the terminal to prepare appropriate timing and duration parameters in advance, reducing the complexity of real-time decision-making while maintaining transmission flexibility.
Data Source
AI summary
An apparatus for transmitting uplink transmission, configured in a terminal equipment, includes a receiver configured to receive second indication information, the second indication information being used to indicate a duration of a CP extension corresponding to a second uplink transmission, and processor circuitry configured to transmit the second uplink transmission without transmitting the CP extension.