Parent Node Broadcast Signaling for Mobile Relay Node Access
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Solution Overview
Problem
The existing cellular communication systems face challenges in effectively managing access and connectivity for both mobile and non-mobile relay nodes, particularly in scenarios where the support information for mobile relay nodes is not clearly broadcast, leading to unclear access restrictions and potential processing issues for mobile IAB nodes.
Innovation Solution
A communication control method that involves broadcasting mobile relay node support information and legacy relay node support information together, ensuring that mobile IAB nodes can access parent nodes by explicitly indicating support for both types of nodes, and utilizing connection grant information to clarify access conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If only mobile relay node support information is broadcast, then mobile relay node access is enabled, but legacy relay node access becomes unclear
Solution Approach 1:
The patent combines mobile relay node support information and legacy relay node support information into a single broadcast message from the parent node. This merging ensures that both types of relay nodes receive clear access instructions simultaneously, resolving the information loss for legacy relay nodes while maintaining mobile relay node access capabilities.
Solution Approach 2:
The broadcast information is designed to serve multiple functions: it indicates support for mobile relay nodes, provides access grant information for legacy relay nodes, and maintains backward compatibility with existing relay node types. This multi-functional broadcast resolves the contradiction by addressing both mobile and legacy relay node requirements in a single communication.
2Device complexity
If access restriction information is not clearly broadcast, then broadcast simplicity is maintained, but access determination becomes ambiguous
Solution Approach 1:
The patent segments access restriction information into distinct components: mobile relay node support indication and legacy relay node access grant information. This segmentation allows each type of relay node to clearly determine its access rights without ambiguity, while the overall broadcast structure remains organized and manageable.
Solution Approach 2:
The parent node performs preliminary action by broadcasting both mobile and legacy relay node support information before relay nodes attempt to access the network. This advance provision of clear access determination information prevents ambiguity and ensures reliable access decisions without requiring complex real-time negotiations.
3Reliability
If both mobile and legacy relay node support information are broadcast, then access clarity is improved, but information overhead increases
Solution Approach 1:
The patent applies local quality by providing specific access information tailored to different relay node types within the same broadcast. Mobile relay nodes receive mobile-specific support information while legacy relay nodes receive legacy-specific access grant information, allowing each node type to process only the relevant information portion, thus minimizing effective information overhead for each node type.
Data Source
AI summary
In an aspect, a communication control method is a communication control method used in a cellular communication system. The communication control method includes, at a parent node, broadcasting mobile relay node support information indicating that a mobile relay node that is movable is supported, and legacy relay node support information indicating both that the mobile relay node is supported and that a legacy relay node that is not movable is supported.