Emergency Session Paging Control for Idle 5G User Equipment
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Solution Overview
Problem
In 5G telecommunications networks, network apparatuses like gNBs are unaware that emergency PDU sessions are active, leading to unnecessary use of paging operations such as Paging Early Indication (PEI) and UE ID-based subgrouping, which increases power consumption and latency.
Innovation Solution
Implementing a system where network apparatuses receive indications from the core network to disable, enable, or reenable network operations like PEI and eDRX during emergency sessions, using F1 interfaces and DL NAS messages to manage UE operations effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paging operations (PEI, eDRX) are used during emergency sessions, then network can monitor UE availability, but power consumption and latency increase unnecessarily
Solution Approach 1:
The system dynamically adjusts paging operation status based on emergency session state. When an emergency session is detected, the network disables PEI and eDRX paging operations, allowing the UE to remain in a lower power state while still being reachable for emergency communications. This dynamic adaptation resolves the contradiction by eliminating unnecessary power consumption while preserving reliability through session-aware paging control.
Solution Approach 2:
The network changes the paging operation parameters (enabling/disabling PEI and eDRX) based on the detection of emergency session activity. By modifying these parameters dynamically according to the session state, the system achieves lower power consumption during emergency sessions while maintaining the ability to reach the UE when needed, thus resolving the reliability-energy contradiction.
2Productivity
If paging operations are performed during emergency sessions, then network can establish follow-up communications, but latency increases
Solution Approach 1:
The system dynamically switches paging operation status based on emergency session detection. When an emergency session is active, the network disables standard PEI and eDRX paging mechanisms that would introduce latency. Instead, the network maintains direct knowledge of the UE's emergency session state, enabling immediate follow-up communications without the latency associated with conventional paging cycles.
Solution Approach 2:
The network acts as an intermediary that directly manages the emergency session state and paging requirements. By having the network itself track and manage the emergency session information rather than relying on standard UE paging mechanisms, the system eliminates the latency intermediate steps while still enabling follow-up communications through the network's direct control.
3Adaptability or versatility
If network apparatus uses standard paging operations, then general communication can be maintained, but unnecessary operations increase during emergency sessions
Solution Approach 1:
The network apparatus dynamically adapts its paging operations based on the detected session type. When a standard session is active, normal PEI and eDRX paging operations are performed to maintain general communication capability. When an emergency session is detected, the network switches to a different operational mode that disables these standard paging operations, thereby improving network operation efficiency by avoiding unnecessary paging while preserving the ability to communicate during emergency situations.
Solution Approach 2:
The network applies different paging operation characteristics to different session types. For standard sessions, conventional paging operations are used. For emergency sessions, the network applies specialized handling that disables standard PEI and eDRX operations. This local differentiation of paging behavior based on session type resolves the contradiction by optimizing efficiency for emergency sessions while maintaining general communication capability for standard sessions.
Data Source
AI summary
In some embodiments, a network apparatus in a telecommunications network, wherein the telecommunications network comprises at least one core network and at least one network node, can be configured to receive data comprising an indication to disable, enable or reenable the use of at least one network operation of the network apparatus for a user equipment, UE, wherein the user equipment, UE, is in a radio resource control, RRC, idle or inactive state of operation, and wherein the user equipment, UE, is participating in an active Packet Data Unit, PDU, or Evolved Universal Terrestrial Radio Access Network, E-UTRAN, Radio Access Bearer, E-RAB, session for an emergency call, and use the received data to disable, enable or reenable the at least one network operation.