Radio Communication Node Dynamic Timing Adjustment
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Solution Overview
Problem
Current radio communication systems face challenges in achieving simultaneous operation of Mobile Termination (MT) and Distributed Unit (DU) functions in Integrated Access and Backhaul (IAB) nodes, particularly in adjusting transmission and reception timing to avoid conflicts and ensure efficient communication.
Innovation Solution
A radio communication node is configured with a control unit that dynamically adjusts the number of guard symbols for transmission timing in uplink transmissions, notifying the upper node to facilitate simultaneous operation of MT and DU, utilizing MAC-Control Elements (MAC-CE) or Enhanced MAC-CE to manage timing adjustments across different scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If guard symbols are introduced to avoid timing conflicts between MT and DU, then reliability of simultaneous operation is improved, but device complexity increases due to dynamic timing adjustment mechanisms
Solution Approach 1:
The patent implements dynamic switching between multiple timing adjustment cases (Case #1 through Case #7) based on current operational conditions. The IAB node can adaptively select different guard symbol configurations and timing alignment strategies depending on whether MT or DU is active, enabling reliable simultaneous operation while managing complexity through conditional logic rather than fixed rigid structures
Solution Approach 2:
The patent changes timing parameters dynamically by adjusting the number and position of guard symbols based on operational state. Different cases specify different timing relationships between MT and DU operations, allowing the system to optimize reliability for each specific scenario by modifying timing parameters rather than using a single fixed configuration
2Adaptability or versatility
If dynamic switching of timing adjustment cases is implemented, then adaptability of timing configuration is improved, but control complexity increases due to multiple case management
Solution Approach 1:
The system dynamically switches between seven specified timing adjustment cases based on operational conditions. Each case represents a different timing relationship configuration between MT and DU, allowing the system to adapt to various scenarios such as different traffic patterns, latency requirements, and resource allocation strategies
Solution Approach 2:
The patent segments the timing adjustment problem into seven distinct cases, each handling specific operational scenarios. By dividing the complex timing management into discrete manageable cases with clear selection criteria, the system achieves high adaptability while controlling complexity through structured case management rather than monolithic control logic
3Reliability
If timing adjustment is performed to avoid conflicts, then reliability of communication is improved, but transmission efficiency decreases due to guard symbol overhead
Solution Approach 1:
The patent optimizes the balance between reliability and efficiency by dynamically adjusting timing parameters such as guard symbol count and position. Different cases allow for different levels of timing adjustment aggressiveness, enabling the system to minimize guard overhead when conflicts are less likely while maintaining adequate protection when simultaneous MT-DU operation creates higher conflict risk
Data Source
AI summary
A radio communication node (100 B) configures a number of first symbols to be used for dynamically adjusting transmission timing when performing uplink transmission in a first radio link connected to the upper node, and notifies the upper node thereof.