Network Equipment Isolation Feedback for UE Access Control
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Solution Overview
Problem
User Equipment (UE) faces challenges in accessing radio networks, particularly in isolated conditions where base stations lose backhaul connections or switch between macro and isolated networks, leading to service disruptions and unnecessary access overhead, as UE is unaware of network state changes, causing misunderstandings about service availability and leading to service continuity issues.
Innovation Solution
A method where network equipment determines state changes and transmits information to UE about network isolation, instructing detachment or re-attachment operations, and updates cell system information to manage access permissions, ensuring UE can determine whether to access isolated networks based on subscription information and network state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE continuously attempts to access the macro core network in isolated network conditions, then service availability may be maintained, but unnecessary access overhead and service disruptions occur
Solution Approach 1:
The network equipment provides feedback to the UE about the isolated network state through system information blocks. This feedback mechanism allows the UE to understand the network status and adjust its access behavior accordingly, avoiding unnecessary access attempts to the macro core network when the radio access network is isolated.
Solution Approach 2:
The network equipment proactively informs the UE about the isolated network state before the UE attempts unnecessary access operations. By providing advance notification through system information, the UE can preemptively adjust its access strategy and avoid wasting resources on futile access attempts to the macro core network.
2Ease of operation
If UE is unaware of network state changes, then access simplicity is maintained, but service continuity and reliability deteriorate
Solution Approach 1:
The system implements a feedback mechanism where the network equipment actively communicates network state information to the UE through system information blocks. This allows the UE to remain unaware of complex network state changes while still receiving necessary information to maintain service continuity, thus preserving access simplicity while improving reliability.
3Adaptability or versatility
If local core network is enabled for isolated radio network, then public safety services can be provided, but network complexity increases
Solution Approach 1:
The system dynamically enables or disables the local core network function based on the operational state of the radio access network. When the network becomes isolated, the local core network is activated to provide public safety services; when connected to the macro core network, the local core network function is disabled. This dynamic approach allows the system to adapt to different operational conditions without permanently increasing network complexity.
Data Source
AI summary
The present application discloses a method for enabling a user equipment to access a radio network, a network equipment and a user equipment. A specific embodiment of the method comprises: determining, by a network equipment, whether a predetermined condition is satisfied; and if yes, the method further comprises: transmitting, by the network equipment, information indicating whether a radio network to which the network equipment belongs is isolated, such that the user equipment performs related operations. In the embodiment, the network equipment informs UE of state information about whether the radio network to which network equipments belongs is isolated or not in different ways, so that the isolated network can provide users with reliable local bearer supporting service continuity, thereby meeting communication requirements for public safety and the like.