UE Pending RNA Update Variable for Connection Resumption
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Solution Overview
Problem
In wireless communications, particularly in 4G and 5G New Radio systems, existing technologies face challenges in ensuring periodic radio access network-based notification area updates when timers expire, leading to potential gaps in radio resource control connection resumption, especially during access barring or reselection events.
Innovation Solution
The introduction of a new variable, pendingPeriodicRNAUpdate, which is set to TRUE when a periodic RNA update timer expires, ensuring that the UE initiates a periodic RNA update procedure even in cases of reject or access barring, by either restarting the timer or initiating a radio resource control connection resume procedure with a cause value set to rna-Update.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE follows existing timer expiration procedures, then the connection resumption process is simplified, but periodic RNA updates may be missed during access barring or reselection events
Solution Approach 1:
The patent applies preliminary action by setting the pendingPeriodicRNAUpdate variable to TRUE before the timer expires, ensuring that the periodic RNA update is preserved even when access barring or reselection occurs. This allows the UE to maintain the update requirement in advance, preventing gaps in notification area updates while managing connection resumption reliability.
2Reliability
If the UE initiates connection resume procedure immediately upon timer expiration, then periodic RNA updates are ensured, but network resources are consumed during access barring conditions
Solution Approach 1:
The patent applies preliminary anti-action by using the pendingPeriodicRNAUpdate variable to prevent inappropriate connection resume attempts during access barring. Instead of immediately initiating resource-consuming resume procedures, the system marks the update as pending and only proceeds when appropriate conditions are met, avoiding unnecessary network resource consumption while maintaining connection reliability.
3Device complexity
If the UE uses a single variable to track RNA update status, then the tracking mechanism is simple, but the status cannot be accurately maintained during multiple events
Solution Approach 1:
The patent applies local quality by creating a specific pendingPeriodicRNAUpdate variable that tracks the periodic RNA update status separately from other connection states. This dedicated variable provides precise local tracking of the periodic update requirement, ensuring accurate status maintenance during access barring, reselection, and connection resumption events without the confusion that would arise from using a single general-purpose variable.
Data Source
AI summary
A method, apparatus, and non-transitory program storage device for handling of a resumption in connection is described. The method includes determining whether a periodic radio access network based notification area update timer has expired; when the periodic radio access network based notification area update timer has been determined to have expired: setting a variable to a first setting; the variable comprising a pendingPeriodicRNAUpdate variable; and determining whether an upper layer has requested resumption of a radio resource control connection, and either: initiating a radio resource control connection resume procedure with a cause value set based on information received from the upper layers, or initiating a radio resource control connection resume procedure with a cause value set to rna-Update.