Mobile IAB Access Restriction Switching for Coverage Expansion
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Solution Overview
Problem
Existing mechanisms lack a convenient switching mechanism for mobile IAB nodes to transition between access restriction states, which is essential for managing network congestion and user access in mobile IAB scenarios.
Innovation Solution
A control apparatus and method that includes a transmission unit to request mobile IAB nodes to release access restrictions, utilizing protocols like BAP and F1AP, and system information blocks to manage access control dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If access restriction is maintained on mobile IAB nodes, then network security and controlled access are improved, but network coverage expansion and congestion relief are worsened
Solution Approach 1:
The patent implements dynamic switching between access restriction and release states for mobile IAB nodes. The system can transition from a restricted state (for security) to a released state (for coverage expansion) based on operational needs, making the access control mechanism adaptable rather than static.
Solution Approach 2:
The patent changes the access restriction parameter of mobile IAB nodes from a fixed state to a controllable variable state. By receiving indication information that triggers state transitions, the system can adjust the access restriction parameter dynamically to balance security requirements with coverage expansion needs.
2Adaptability or versatility
If access restriction is released on mobile IAB nodes, then network coverage and user access are improved, but network congestion and security risks are worsened
Solution Approach 1:
The system performs preliminary assessment before releasing access restrictions by evaluating whether the mobile IAB node is in an appropriate location and whether release conditions are met. This preliminary check prevents premature access release that could lead to network congestion, ensuring that coverage expansion occurs only when beneficial.
Solution Approach 2:
The patent implements a feedback mechanism where the system monitors the state and performance of mobile IAB nodes continuously. Based on this feedback, the system makes informed decisions about whether to maintain or release access restrictions, allowing dynamic adjustment to prevent network congestion while maximizing coverage.
3Measurement precision
If manual switching of access restriction states is implemented, then control precision is improved, but operational complexity and time consumption are worsened
Solution Approach 1:
The mobile IAB node autonomously determines and executes access restriction state transitions based on received indication information and pre-configured conditions. This self-service capability eliminates the need for manual operator intervention, reducing operational complexity and time consumption while maintaining precise control over access states.
Solution Approach 2:
The system transitions access restriction control from manual parameter adjustment to automated parameter change based on triggering conditions. When indication information is received and conditions are met, the system automatically changes the access restriction parameter, achieving precise control without manual intervention.
Data Source
AI summary
There is disclosed a control apparatus including a transmission unit configured to transmit a request to a mobile Integrated Access and Backhaul (IAB) node currently set for an access restriction, the request requesting the mobile IAB node to release the access restriction. Desirably, the transmission unit transmits a request in a case where a predetermined condition is satisfied. It is also desirable that the control apparatus further includes a first reception unit configured to receive a notification including information indicating no connectable base stations from User Equipment (UE), and the predetermined condition is satisfied upon reception of the notification.