Improvement of user equipment reachability behavior in suspended NAS signaling state in mobile communications
The proposed schemes address the lack of clarity in UE behavior during suspended NAS signaling by specifying changes in idle mode indications and periodic updates, enhancing network connectivity and reachability in mobile communications.
WO2025214166A1 Publication Date: 2025-10-16MEDIATEK INC
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Patent Information
- Application Number
- PCT/CN2025/085335
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-10-07
- Filing Date
- 2025-03-27
- Publication Date
- 2025-10-16
AI Technical Summary
Technical Problem
Current 3GPP specifications do not specify how user equipment (UE) should periodically update its presence to the network when the NAS signaling connection is suspended, leading to unclear UE behavior in EMM-IDLE or 5GMM-IDLE modes.
Method used
Proposed schemes include UE changing from idle mode with suspend indication to idle mode without suspend indication, starting a periodic registration update timer, and performing actions related to the timer, such as resuming or releasing the RRC connection, and initiating periodic updates.
Benefits of technology
Improves UE reachability behavior by clarifying network interaction protocols, ensuring timely and efficient periodic updates, and maintaining network connectivity in suspended NAS signaling states.
✦ Generated by Eureka AI based on patent content.
Abstract
Techniques pertaining to improvement of user equipment (UE) reachability behavior in suspended non-access stratum (NAS) signaling state in mobile communications are described. An apparatus (e.g., a user equipment (UE) ) changes from an idle mode with a suspend indication to the idle mode (without the suspend indication). The apparatus starts a periodic registration update timer responsive to the changing.
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