RNA Update Restrictions During Small Data Transmission
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Solution Overview
Problem
The existing technologies face challenges in avoiding collisions between the Small Data Transmission (SDT) procedure and the Radio Access Network (RAN) based Notification Area (RNA) update procedure in New Radio (NR) networks, leading to potential signaling overhead and delay.
Innovation Solution
The proposed solution involves restricting the RNA update procedure during the SDT procedure by stopping or postponing the RNA update timer, or performing the RNA update using additional resources configured for the SDT procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the RNA update procedure is triggered during the SDT procedure, then the UE can report location information to the base station, but a collision between the SDT procedure and the RNA update procedure occurs
Solution Approach 1:
The patent applies preliminary anti-action by preemptively suspending or stopping the RNA update procedure when the SDT procedure is detected to be ongoing. The base station monitors the UE's procedure state and proactively prevents the RNA update from being triggered during SDT, thereby avoiding collision before it occurs. This is implemented through the base station transmitting indicators to the UE to suspend RNA update timing or prevent RNA update message transmission during active SDT procedures.
2Productivity
If the SDT procedure is successful, then data transmission is achieved without mode transition, but a periodic RNA update procedure may still be required
Solution Approach 1:
The patent applies preliminary action by having the base station proactively configure RNA update parameters and timing information in the RRC Release message before the UE enters RRC_INACTIVE mode. The base station pre-determines whether periodic RNA update is needed after successful SDT and provides advance instructions to the UE, including timer configurations and update triggers. This allows the UE to efficiently manage RNA updates after SDT completion without requiring additional signaling exchanges.
3Loss of energy
If the UE maintains RRC_INACTIVE mode during SDT, then signaling overhead and delay are reduced, but the UE must manage multiple procedures simultaneously
Solution Approach 1:
The patent applies dynamics by implementing dynamic procedure suspension and resumption mechanisms. The UE and base station dynamically adjust the state of RNA update procedures based on whether SDT is active. When SDT is detected, the RNA update procedure is dynamically suspended; when SDT completes or fails, the RNA update procedure is dynamically resumed or re-triggered. This dynamic state management allows the system to maintain RRC_INACTIVE mode efficiency while adapting procedure execution to current operational context.
Data Source
AI summary
Example embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for restrictions for a radio access network based notification area (RNA) update procedure during a small data transmission (SDT) procedure. In example embodiments, the first device initiates the SDT procedure. Then, the first device restricts performing of the RNA update procedure during the SDT procedure.