NTN System Information Reading with UE Collision Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In non-terrestrial networks (NTNs), existing systems face challenges in determining the timing and occasion for system information reading, particularly when it collides with other UE behaviors such as receiving data and control channels, uplink transmissions, and radio resource management (RRM) measurements, leading to inefficiencies and potential data loss.
Innovation Solution
User equipment (UE) devices are configured to determine triggering events for satellite information reading, prioritize or skip certain actions based on collisions, and manage scheduling restrictions to optimize system information reading in 5G NR systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the UE reads system information for satellite information at the scheduled occasion, then the system information is obtained, but it may collide with receiving data channel or control channel from serving cell, causing data loss
Solution Approach 1:
The patent implements dynamic prioritization mechanisms where the UE can adaptively adjust its behavior based on collision detection. When a collision between system information reading occasion and data/control channel reception is detected, the UE dynamically switches between different reading strategies (e.g., skipping the reading occasion, deferring to next occasion, or prioritizing system information over data channel). This dynamic adaptation resolves the contradiction by allowing the system to maintain reliability for critical channels while ensuring system information is eventually obtained.
2Loss of information
If the UE prioritizes system information reading over uplink transmission, then system information is obtained, but uplink transmission is skipped
Solution Approach 1:
The patent applies partial action by implementing selective prioritization rather than absolute prioritization. Instead of always skipping uplink transmission when system information reading is scheduled, the UE evaluates the importance and timing of both operations. The UE may skip only the conflicting uplink transmission while maintaining other uplink activities, or defer system information reading to a later occasion to preserve uplink transmission. This partial application of prioritization resolves the contradiction by balancing information acquisition with transmission efficiency.
3Productivity
If the UE prioritizes uplink transmission over system information reading, then uplink transmission is maintained, but system information reading is skipped
Solution Approach 1:
The patent implements preliminary action by proactively identifying system information reading occasions and evaluating potential conflicts with uplink transmissions before they occur. The UE uses scheduling information and collision detection mechanisms to anticipate conflicts and make advance decisions about prioritization. This preliminary evaluation allows the UE to plan system information reading in advance, potentially deferring it to a future occasion that does not conflict with important uplink transmissions, thereby resolving the contradiction by balancing both requirements through forward planning.
4Loss of information
If the UE reads system information periodically, then system information is kept updated, but it may collide with RRM measurements, causing measurement inaccuracies
Solution Approach 1:
The patent implements dynamic conflict resolution between system information reading and RRM measurements. The UE continuously monitors for collisions between scheduled system information reading occasions and RRM measurement opportunities. When a collision is detected, the UE dynamically adjusts its behavior based on the relative importance and timing of both operations, potentially deferring system information reading or adjusting measurement timing. This dynamic adaptation resolves the contradiction by maintaining system information freshness while preserving RRM measurement accuracy through adaptive scheduling.
Data Source
AI summary
Apparatuses, systems, and methods for enhanced system information reading in NTNs, including systems, methods, and mechanisms to determining timing and/or occasion for a UE to read system information as well as determining scheduling restrictions when system information reading collides with other UE behaviors, e.g., such as receiving data and/or control channels from a serving cell, uplink transmissions, and/or radio resource management (RRM) measurements.