PRACH Proximity Detection via Triggered Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication networks face interference and congestion due to increasing demand for mobile broadband access, which degrades performance and makes it challenging to efficiently manage physical random access channel (PRACH) signals in proximity detection.
Innovation Solution
The solution involves a serving base station triggering periodic PRACH signaling in user equipment (UE) with dynamic power nodes (DPNs) establishing neighbor lists and adjusting transmission power settings to optimize PRACH resource allocation and detection, allowing for proximity-based operation mode changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If periodic PRACH signaling is triggered in UE with dynamic power nodes, then proximity detection capability is improved, but network interference and congestion increase
Solution Approach 1:
The patent implements periodic PRACH signaling where the base station triggers periodic random access signals from UEs for proximity detection. This periodic action allows the network to detect UE proximity at regular intervals without requiring continuous transmission, thereby improving proximity detection capability while controlling interference levels through the periodic nature of the signals.
Solution Approach 2:
The patent employs dynamic power management by adjusting transmission power settings of PRACH signals based on detected proximity conditions. The base station can modify power parameters of triggered PRACH signals to optimize detection sensitivity while managing overall network interference, changing power levels dynamically rather than maintaining constant transmission levels.
2Productivity
If dynamic power management is applied to PRACH signals, then network performance is improved, but device complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where the base station monitors PRACH signal quality and proximity conditions, then adjusts power management parameters accordingly. This closed-loop feedback system allows dynamic power management to optimize network performance while the base station handles the complexity of power adjustments, reducing the burden on UE devices.
Solution Approach 2:
The patent enables UEs to autonomously adjust their PRACH transmission power based on received power control commands from the base station. The UEs self-manage their transmission power levels without requiring complex centralized control for each individual signal, simplifying the overall system architecture while maintaining dynamic power management capabilities.
3Reliability
If PRACH transmission power is increased for multiple transmissions, then proximity detection reliability is improved, but energy consumption increases
Solution Approach 1:
The patent implements dynamic power adjustment where the base station controls UE transmission power levels based on real-time proximity detection needs and signal quality conditions. Rather than using fixed high power for all transmissions, the system dynamically adapts power levels - using higher power only when necessary for reliable detection and lower power when conditions permit, thereby balancing reliability with energy efficiency.
Solution Approach 2:
The patent applies partial action by transmitting PRACH signals at elevated power levels only for the specific purpose of proximity detection when triggered by the base station, rather than maintaining high power continuously. The UE uses normal power levels for regular communication but increases power temporarily and selectively for proximity detection transmissions, reducing overall energy consumption while maintaining detection reliability when needed.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Improvements to signaling procedures for use in physical random access channel (PRACH)-based proximity detection are disclosed. Signaling and signaling processes from a serving base station may trigger a more efficient and reliable transmission of PRACH from related user equipment (UE). At the dynamic power nodes (DPNs) monitoring for such PRACH-based proximity, features are disclosed which establish neighbor lists for more efficient management of detection and proximity activation.