Operator Determined Barring for Wireless Access Control
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Solution Overview
Problem
In wireless communication networks, there is a challenge in managing authorization for wireless devices to communicate with access nodes shared by multiple network operators, where devices may be restricted from accessing certain nodes based on network identifiers, leading to unauthorized communication attempts and inefficient handover processes.
Innovation Solution
A system where a network node receives requests from wireless devices to establish communication with access nodes, determines authorization through an authentication node, and transmits messages to grant or deny requests based on authorization status, preventing unauthorized communication and updating lists of approved access nodes for seamless handovers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a wireless device is allowed to automatically select access nodes based on PLMN priority, then communication efficiency is improved, but unauthorized access to restricted nodes may occur
Solution Approach 1:
The system performs preliminary authorization checks by the network node before allowing communication establishment. The network node receives authorization information from the authorization node in advance and uses this information to prevent unauthorized access before it occurs, rather than reacting after unauthorized access attempts.
Solution Approach 2:
The network node acts as an intermediary between the wireless device and the access node. It receives the wireless device's communication request, checks authorization status against the received authorization information, and only then permits or denies access to the access node, thereby mediating the authorization process.
2Reliability
If manual PLMN selection is implemented, then access control is improved, but handover processes become less efficient
Solution Approach 1:
The network node receives and stores authorization information from the authorization node in advance, preparing the authorization status before handover is needed. This preliminary preparation allows for rapid authorization verification during handover without adding significant delay.
Solution Approach 2:
The system implements feedback by having the network node continuously monitor and update authorization status based on information from the authorization node. This feedback mechanism ensures that handover decisions are based on current authorization status, enabling efficient automated handover while maintaining access control.
3Reliability
If the network node continuously monitors authorization status, then security is improved, but network overhead increases
Solution Approach 1:
The network node periodically receives authorization information from the authorization node at intervals rather than continuously monitoring. This periodic update mechanism maintains security by ensuring authorization status is checked regularly while reducing network overhead compared to continuous monitoring.
Data Source
AI summary
Systems and methods of operating a wireless communication system are provided. A network node can receive a request from the wireless device to establish communication with the first access node. A network node can receive an indication from an authorization node that a wireless device is not authorized to communicate with a first access node. The network node can transmit a message denying the request to establish communication with the first access node to the wireless device based on the indication from the authorization node. The network node can receive a request from the wireless device to establish communication with a second access node. The network node can determine that the wireless device is authorized to establish communication with the second access node. The network node can transmit a message granting the request to establish communication with the second access node to the wireless device.