Mobile IAB Connection Rejection for Stable Multi-Hop Control
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Solution Overview
Problem
Existing IAB network specifications fail to address the challenges of maintaining communication services in mobile IAB scenarios, particularly when multi-hop configurations are difficult to manage due to mobility, leading to potential network instability and service disruptions.
Innovation Solution
Implement a mechanism to control connection requests in IAB networks by identifying mobile IAB nodes and rejecting inappropriate connections through the use of RRCSetupRequest messages, thereby limiting multi-hop configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multi-hop configuration is allowed in mobile IAB network, then network coverage and connectivity are improved, but network stability deteriorates due to difficulty in maintaining connections during mobility
Solution Approach 1:
The patent applies preliminary anti-action by proactively rejecting connection requests from mobile IAB nodes before they can establish problematic multi-hop configurations. The base station apparatus detects the mobile IAB node status in advance and prevents connection attempts that would create unstable multi-hop topologies, thereby maintaining network stability while still allowing mobile IAB nodes to function independently.
2Adaptability or versatility
If mobile IAB node accepts multi-hop configuration, then connectivity options are increased, but ease of operation deteriorates due to increased network maintenance complexity
Solution Approach 1:
The patent extracts the problematic multi-hop configuration capability from the mobile IAB node operation. By rejecting connection requests from mobile IAB nodes, the system removes the source of maintenance complexity while preserving the beneficial connectivity options that mobile IAB nodes can provide through alternative means (direct connections to IAB donor or fixed IAB nodes).
Data Source
AI summary
A method for controlling communication, the method including acquiring a Radio Resource Control Setup Request (RRCSetupRequest) from an external apparatus to one Integrated Access and Backhaul (IAB) node, and performing, at least in a case where the one IAB node is a mobile IAB node and the external apparatus is another IAB node, connection control to reject a connection request requested by the RRCSetupRequest.