Preconfigured Uplink Resource Validity Verification in Non-Terrestrial Networks
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Solution Overview
Problem
Current wireless communication standards for non-terrestrial networks, such as those using satellites, face challenges in maintaining the validity of preconfigured uplink resources due to non-continuous coverage and rapid changes in signal conditions, leading to increased power consumption and network load.
Innovation Solution
The method involves a user equipment (UE) receiving configuration information for preconfigured uplink resources and verifying its validity, allowing for efficient data transmission even in cells with non-continuous coverage by associating the PUR configuration with multiple cells or determining cell identity for resource reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If preconfigured uplink resources are used in non-terrestrial networks with non-continuous coverage, then uplink data transmission efficiency is improved, but configuration validity maintenance becomes difficult due to rapid signal condition changes
Solution Approach 1:
The patent applies dynamics by making the PUR configuration adaptive to changing non-terrestrial network conditions. The network node dynamically updates PUR configurations based on current signal conditions, satellite position, and coverage availability, allowing the system to respond to rapid environmental changes while maintaining transmission efficiency
Solution Approach 2:
The patent implements feedback mechanisms where the UE reports signal quality measurements and coverage status to the network node. The network node uses this feedback to determine whether to maintain, update, or release PUR configurations, ensuring configuration validity is maintained through continuous monitoring and adjustment
2Use of energy by moving object
If preconfigured uplink resources are maintained across multiple cells for non-continuous coverage, then power consumption is reduced, but resource management complexity increases
Solution Approach 1:
The patent applies universality by configuring PUR resources that can be used across multiple cells and satellite beams. A single PUR configuration is designed to be valid in multiple geographic areas and time windows, allowing the UE to reuse the same uplink resources without reconfiguration when moving between coverage areas, thereby reducing power consumption while managing complexity through standardized multi-cell resource definitions
Solution Approach 2:
The patent segments the PUR configuration into distinct validity parameters including geographic area identifiers, time windows, and satellite beam identifiers. This segmentation allows the network to manage complexity by defining resources in modular, independently controllable units that can be selectively activated based on UE location and network conditions
3Quantity of substance
If preconfigured uplink resources are used in RRC idle state, then network load is reduced, but handling non-continuous coverage becomes challenging
Solution Approach 1:
The patent applies preliminary action by pre-configuring PUR resources and validity parameters (including area identifiers and time windows) before the UE enters idle mode. The network node provides PUR configurations that anticipate future coverage conditions, allowing the UE to autonomously determine resource validity based on pre-defined criteria without requiring continuous network interaction, thus reducing network load while adapting to non-continuous coverage
Data Source
AI summary
The present disclosure relates to user equipment, access network node, and a method performed by them. A method performed by a user equipment (UE) for communicating via a non-terrestrial network is disclosed. The method comprises receive configuration information identifying preconfigured uplink resources for use by the UE in a Radio Resource Control (RRC) idle state; verify whether or not the configuration information is still valid; and determine whether to transmit data using the preconfigured uplink resources in accordance with the verifying.