Wireless Paging Identifier Monitoring Across RRC State Transitions
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Solution Overview
Problem
Existing wireless devices face paging failures when transitioning autonomously from RRC_INACTIVE to RRC_IDLE without network control, leading to state mismatches and inefficiencies in power management and network signaling.
Innovation Solution
Implementing dual-monitoring of paging identifiers in wireless devices, allowing them to autonomously transition from RRC_INACTIVE to RRC_IDLE while maintaining dual-radio resource configurations, including RAN-level and CN-level identifiers, and using a 'double paging ID' timer to manage these transitions efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If wireless devices autonomously transition from RRC_INACTIVE to RRC_IDLE without network control, then power consumption is reduced and device autonomy is improved, but paging failures occur due to state mismatches between device and network
Solution Approach 1:
The network configures the device with both RRC_INACTIVE and RRC_IDLE paging identifiers before the autonomous transition occurs. This preliminary configuration ensures that regardless of whether the device is in RRC_INACTIVE or has transitioned to RRC_IDLE, the network can successfully page the device using the appropriate identifier, eliminating paging failures while allowing autonomous state transitions
Solution Approach 2:
The patent introduces an intermediary mechanism where the network maintains configuration knowledge of both RRC_INACTIVE and RRC_IDLE paging identifiers for a device. This intermediary configuration layer acts as a bridge between the network's control plane and the device's autonomous state transitions, allowing the network to successfully page devices regardless of their actual RRC state
2Reliability
If dual-monitoring of paging identifiers is implemented, then paging failures are reduced and reliability is improved, but device complexity increases due to maintaining multiple radio resource configurations
Solution Approach 1:
The device is configured to monitor multiple paging identifiers (both RRC_INACTIVE and RRC_IDLE) simultaneously. This multi-functionality allows the single paging mechanism to handle multiple RRC states effectively, improving reliability without requiring separate paging systems for each state. The device can respond to paging messages regardless of its current RRC state configuration
Solution Approach 2:
The patent changes the parameter of paging identifier monitoring from a single identifier to multiple identifiers. By configuring the device to monitor both RRC_INACTIVE and RRC_IDLE paging identifiers, the system adapts to dynamic state transitions. The device can flexibly switch between monitoring different identifier types based on its current state, reducing paging failures while managing complexity through parameter flexibility
3Stability of the object's composition
If a configurable timer is used to manage state transitions, then state synchronization between network and device is improved, but signaling overhead increases
Solution Approach 1:
The patent introduces a configurable timer that triggers periodic state transitions or configuration updates. This periodic action allows the network and device to synchronize their understanding of the device's RRC state at regular intervals, ensuring stability and preventing prolonged state mismatches. The timer-based approach provides structured synchronization opportunities without requiring continuous signaling
Data Source
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AI summary
According to an example aspect of the present invention, there is provided a method comprising: monitoring at least one paging identifier in a first radio resource control state, in which first radio resource control state a radio resource configuration is maintained for the user equipment; transitioning from the first radio resource control state to a second radio resource control state; and monitoring at least two different paging identifiers in the second radio resource control state.