IAB Node Link Availability Determination via Gap Symbols
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Solution Overview
Problem
Current wireless communication systems face challenges in maintaining stability and efficiency, particularly in switching between mobile terminal (MT) and distributed unit (DU) operations, which affects the Integrated Access Backhaul (IAB) communication, leading to instability and inefficiencies.
Innovation Solution
The method involves receiving gap symbol information to determine the number of gap symbols related to switching between MT and DU operations, preventing IAB operations on unavailable resources, thereby ensuring stable communication by optimizing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the node performs both MT and DU operations on available resources without gap symbols, then resource utilization is maximized, but switching between MT and DU operations becomes unstable and inefficient
Solution Approach 1:
The patent applies preliminary action by pre-configuring gap symbols in the resource allocation before switching between MT and DU operations. The gap symbols are predetermined and indicated through RRC signaling or DCI, allowing the node to prepare for mode switching in advance. This prevents instability during switching while maintaining high resource utilization by ensuring that only properly designated gap resources are excluded from operations.
2Reliability
If gap symbols are introduced to stabilize switching between MT and DU operations, then switching stability is improved, but the number of available resources for IAB operations decreases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the number and positioning of gap symbols based on operational requirements. The gap symbol configuration can be modified through RRC signaling or DCI indications, allowing the system to optimize the balance between switching stability and resource utilization. This enables flexible adaptation where gap symbols are introduced only when and where needed for stable switching.
3Productivity
If the node operates on all indicated resources without checking availability, then communication efficiency is maximized, but operations may occur on unavailable resources causing instability
Solution Approach 1:
The patent applies feedback by implementing a resource availability checking mechanism where the node verifies whether resources are actually available before performing IAB operations. The determination of resource availability is based on feedback from the gap symbol configuration and switching state, ensuring that operations only occur on truly available resources. This maintains communication efficiency by utilizing all valid resources while preventing instability from operating on unavailable ones.
Data Source
AI summary
The present specification provides a method for receiving gap symbol information, the method being performed by a node in a wireless communication system. The method is characterized by including: receiving the gap symbol information, wherein the gap symbol information indicates the number of gap symbols pertaining to switching between a mobile terminal (MT) operation and a distributed unit (DU) operation; and performing an integrated access and backhaul (IAB) operation on the basis of the gap symbol information, wherein the node does not perform the IAB operation on the symbol indicated by the gap symbol information.