Access Barring Timer Control During Relay Selection
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Solution Overview
Problem
In communication systems, the control of an access barring timer during cell reselection or relay selection by remote terminal devices is not adequately addressed, leading to potential communication reliability issues.
Innovation Solution
A method for remote terminal devices to determine the satisfaction of specified conditions during relay selection and control the access barring timer accordingly, either stopping or keeping it running based on these conditions, ensuring reliable access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the remote terminal device stops the access barring timer during relay selection, then the access responsiveness is improved, but the access control reliability deteriorates due to potential premature access attempts
Solution Approach 1:
The patent changes the parameter of access barring timer behavior from a fixed rule to a conditional rule. The timer is stopped only when specific conditions are met (trigger event is not a specified event OR serving cell changes), rather than always stopping or always continuing. This conditional parameter change resolves the contradiction by allowing timely access when appropriate while maintaining reliability when conditions indicate potential issues.
Solution Approach 2:
The patent introduces feedback mechanisms by monitoring trigger events and serving cell changes during relay selection. The system continuously checks whether the current trigger event matches specified events and whether the serving cell has changed, using this feedback to dynamically control the access barring timer. This feedback loop ensures the timer is stopped only when conditions indicate it is safe to do so, maintaining access control reliability.
2Reliability
If the remote terminal device keeps the access barring timer running during relay selection, then the access control reliability is maintained, but the access responsiveness deteriorates due to delayed access attempts
Solution Approach 1:
The patent changes the parameter of access barring timer behavior from a fixed rule to a conditional rule. The timer continues running only when specific conditions are not met (trigger event is a specified event AND serving cell does not change), rather than always stopping or always continuing. This conditional parameter change resolves the contradiction by maintaining reliability when conditions indicate potential issues while allowing timely access when conditions are favorable.
3Device complexity
If the access control method does not consider relay selection during access barring timer running, then the system complexity is reduced, but the communication reliability deteriorates due to inadequate access control
Solution Approach 1:
The patent segments the access control logic into distinct evaluable conditions: checking whether the trigger event is a specified event and checking whether the serving cell has changed. This segmentation allows the complex relay selection scenario to be handled through modular condition checks rather than a monolithic complex algorithm, resolving the contradiction by making the system manageable while maintaining reliability.
Solution Approach 2:
The patent introduces dynamic behavior to the access control method by making the timer stopping decision dependent on real-time conditions (trigger event type and serving cell status). Rather than a static rule, the system dynamically evaluates conditions during relay selection and adjusts timer behavior accordingly. This dynamic approach maintains communication reliability while keeping the method adaptable to different scenarios.
Data Source
AI summary
An access control method is performed by a remote terminal device, and includes: in response to the remote terminal device performing a relay selection during running of an access barring timer, determining a satisfaction situation of a specified condition; and controlling a running state of the access barring timer according to the satisfaction situation of the specified condition.