UE Access Failure Reporting for GBR Traffic Priority
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Solution Overview
Problem
Current communication systems cannot prioritize guaranteed bit rate (GBR) traffic, such as multimedia telephony and SMS, during the initial IMS connection establishment, leading to potential Quality of Service (QoS) issues, as they lack information on access state and distribution of GBR traffic before the connection is established.
Innovation Solution
A method where User Equipment (UE) reports accessing failure events to a control node, allowing for more informed decision-making on access control mechanisms, such as the ACB skip mechanism, by performing accessibility measurements and recording failure events during GBR traffic connection attempts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the network uses ACB skip mechanism to prioritize GBR traffic, then GBR traffic access priority is improved, but the network lacks sufficient information to make appropriate access control decisions
Solution Approach 1:
The network sends a configuration signal to the UE before the UE enters idle mode, instructing it to perform accessibility measurements and record accessing failure events. This preliminary action ensures that the network obtains necessary access state information in advance, enabling informed ACB skip mechanism decisions while maintaining GBR traffic priority
Solution Approach 2:
The UE reports recorded accessing failure events back to the network control node. This feedback loop provides the network with real-world access state information, allowing it to adjust access control mechanisms appropriately while maintaining the ability to prioritize GBR traffic
2Measurement precision
If the network collects detailed access state information from UEs, then access control decision accuracy is improved, but UE measurement and reporting overhead increases
Solution Approach 1:
The configuration signal is sent selectively to specific UEs that need to perform accessibility measurements, rather than all UEs in the network. This localized approach improves measurement accuracy for relevant cases while minimizing overall UE complexity and overhead
Solution Approach 2:
The UE is pre-configured with measurement instructions before entering idle mode, so it knows exactly what to measure and report. This preliminary configuration simplifies the UE's task during actual measurement, reducing operational complexity while maintaining measurement precision
Data Source
AI summary
An accessing failure event reporting method, UE, a method for adjusting access control mechanism and a control node are proposed. The accessing failure event reporting method includes: receiving a configuration signal when the UE is preparing into idle mode; performing an accessibility measurement of a GBR mechanism in response to the configuration signal. The accessibility measurement includes: attempting to establish a GBR traffic connection; recording at least one accessing failure event if the UE fails to establish the GBR traffic connection; and reporting the at least one accessing failure event.