Uplink Timing Offset Control Across NR Duplex Modes
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Solution Overview
Problem
In radio communication systems, particularly in NR, uplink transmission timing control becomes complicated due to the need to consider duplex modes, which is undesirable for high-speed operations.
Innovation Solution
Implementing a technique that allows uplink transmission timing control independent of duplex modes by using a fixed or preconfigured N TA offset value, determined based on the frequency range of the serving cell, without considering the duplex mode of the cell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple uplink signals are transmitted at different timing for different purposes, then communication flexibility and performance are improved, but timing synchronization becomes more complex and difficult to manage
Solution Approach 1:
The patent segments the uplink transmission timing into distinct types (first uplink signal with first timing, second uplink signal with second timing) based on their different purposes and requirements. This segmentation allows each signal type to be transmitted with optimized timing independently, improving communication flexibility while managing synchronization complexity through structured classification.
Solution Approach 2:
The patent changes the timing parameter of uplink signals based on their type and purpose. By adjusting transmission timing as a variable parameter rather than using a fixed timing for all signals, the system achieves better adaptability for different communication scenarios while maintaining manageable complexity through systematic parameter management.
2Reliability
If uplink signals are transmitted with different timing, then signal optimization for specific purposes is achieved, but signal collision and interference may occur
Solution Approach 1:
The patent applies different timing characteristics to different uplink signals based on their specific purposes and requirements. Each signal type receives localized timing optimization suited to its function, which improves overall transmission reliability while the differentiated timing approach naturally reduces signal collision and interference by spacing transmissions appropriately.
3Productivity
If timing adjustment is performed based on multiple signal types, then communication performance is optimized, but control and management becomes more difficult
Solution Approach 1:
The patent optimizes communication performance by changing timing parameters based on signal type, purpose, and channel conditions. The system manages the complexity of controlling multiple timing parameters through systematic adjustment rules that balance performance optimization with operational simplicity.
Data Source
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AI summary
A user equipment in a radio communication system including a base station and the user equipment, including: a signal transmission unit that transmits an uplink signal to the base station; a signal reception unit that receives a downlink signal from the base station; and a timing adjustment unit that performs timing control to shift a transmission timing of an uplink signal to be transmitted from the signal transmission unit forward with respect to a reception timing of a downlink signal received by the signal reception unit, wherein tie timing adjustment unit executes the timing control in a serving cell using an offset value independent of a duplex mode of the serving cell.