Repeater Validity Time for RRC Connection Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication networks, particularly in LTE and NR systems, a UE in an RRC-idle state cannot be paged by the RAN node to reestablish an RRC connection, leading to issues with power conservation, network resource management, and spectral efficiency, resulting in radio link failures and stale data.
Innovation Solution
A repeater receives a side control configuration from a RAN node with a validity time, allowing it to forward signaling based on this configuration for the specified duration, and upon expiry, it stops using the configuration, initiates an RRC reconnection, or switches to a default configuration, ensuring efficient resource management and data delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the UE is released to RRC-idle state to conserve power, then power consumption is reduced, but the RAN node cannot page the UE to reestablish connection leading to radio link failures
Solution Approach 1:
The network provides control information and validity time to the UE before releasing it to RRC-idle state. This preliminary action enables the UE to proactively reestablish connection or update configuration within the validity period, preventing radio link failures while maintaining power savings during idle state.
Solution Approach 2:
The system dynamically manages the RRC state transitions with a validity time parameter that creates a controlled window for connection reestablishment. The UE can transition from idle to connected state within this dynamic timeframe when needed, balancing power conservation with connection reliability.
2Reliability
If the UE remains in RRC-connected state to maintain connectivity, then connection reliability is improved, but power consumption increases
Solution Approach 1:
The network provides control information with a validity time before releasing the UE to idle state, enabling preliminary preparation for potential connection needs. This allows the UE to remain in idle state saving power, while having the capability to quickly reestablish connection within the validity period if needed.
3Manufacturing precision
If control information is transmitted frequently to update configuration, then configuration accuracy is improved, but network overhead increases
Solution Approach 1:
The invention introduces a validity time parameter that changes the approach from frequent control information updates to a validity-based approach. Control information is provided with a time window during which it remains valid, reducing the frequency of updates needed while maintaining configuration accuracy within that window.
Solution Approach 2:
The network provides control information in advance with a validity time, performing the configuration update before the UE enters idle state. This preliminary action eliminates the need for frequent subsequent updates, reducing network overhead while maintaining configuration accuracy during the validity period.
4Quantity of substance
If the validity time is extended to reduce reconnection frequency, then signaling overhead is reduced, but data may become stale
Solution Approach 1:
The validity time parameter is optimized to balance signaling overhead and data freshness. By adjusting this parameter, the system finds the optimal window where control information remains valid and useful, reducing unnecessary reconnections while ensuring data doesn't become stale before updates are needed.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a repeater may receive a side control configuration from a radio access network (RAN) node. The repeater may receive an indication of a validity time associated with the side control configuration. The repeater may forward signaling to or from the RAN node based on the side control configuration for a duration of the validity time. Numerous other aspects are described.