Dynamic Frequency Prioritization for Multi-RAT Network Searching
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Solution Overview
Problem
Current wireless communication technologies, such as LTE and NR, face challenges in efficiently managing multiple radio access technologies (RATs) for mobile network searching, particularly in prioritizing frequencies and selecting suitable cells for user equipment (UE) to optimize network resource utilization and user experience.
Innovation Solution
The implementation of techniques and apparatuses in user equipment (UE) that determine the operating mode and prioritize frequencies associated with different RATs, such as LTE and 5G, to perform enhanced mobile network searching, displaying information about cell capabilities and automatically selecting the best network for connection based on available modes (non-standalone, standalone, or dual connectivity).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE performs network searching across multiple RATs simultaneously, then the network coverage and service availability are improved, but the power consumption and processing complexity increase
Solution Approach 1:
The patent implements dynamic frequency prioritization where the UE adjusts the searching order and intensity of different RATs based on real-time conditions. The system determines operating modes (non-standalone, standalone, or dual connectivity) and dynamically prioritizes frequencies associated with different RATs, allowing the searching strategy to adapt to current network availability and UE requirements, thereby improving service availability while managing power consumption efficiently.
Solution Approach 2:
The network searching process is segmented into multiple priority levels and phases. The UE divides the frequency spectrum into prioritized groups based on operating mode, searching higher-priority frequencies first before moving to lower-priority ones. This segmentation allows the system to focus resources on the most critical network access paths while still maintaining the capability to search alternative RATs if needed, reducing overall power consumption while ensuring reliable service availability.
2Measurement precision
If the UE searches all available frequencies across multiple RATs, then the network selection accuracy is improved, but the time required for network searching increases
Solution Approach 1:
The patent applies preliminary action by pre-determining frequency priorities based on the UE's operating mode before actual network searching begins. The system pre-configures which frequencies and RATs should be searched first, based on whether the UE is in non-standalone, standalone, or dual connectivity mode. This preliminary prioritization ensures that the UE searches the most promising frequencies first, achieving accurate network selection without unnecessarily searching all available frequencies, thus reducing searching time while maintaining selection accuracy.
Solution Approach 2:
The frequency prioritization is dynamically adjusted during the searching process based on detected network conditions and UE requirements. The system can change the priority order of frequencies and RATs in real-time, allowing it to adapt to changing network availability and quickly converge on the best network option, thereby reducing overall searching time while maintaining accurate network selection.
3Adaptability or versatility
If the UE implements complex multi-mode network searching, then the adaptability to different network environments is improved, but the device complexity increases
Solution Approach 1:
The patent implements a universal frequency prioritization mechanism that handles multiple operating modes (non-standalone, standalone, and dual connectivity) through a single integrated framework. The same core algorithm and data structures are used across all modes, with the flexibility to adjust priority assignments based on the current mode. This multi-functional approach allows the UE to adapt to different network environments while avoiding the need for separate complex searching mechanisms for each mode, thereby reducing overall device complexity.
Data Source
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AI summary
Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine a mode in which the user equipment is enabled, wherein the mode is one of a non-standalone mode, a standalone mode, or a standalone mode and a non-standalone mode; determine whether to prioritize a first set of frequencies associated with a first radio access technology (RAT) or a second set of frequencies associated with a second RAT based at least in part on the mode in which the user equipment is enabled, wherein the first RAT is different from the second RAT; and perform a search of the first set of frequencies or the second set of frequencies based at least in part on whether the first set of frequencies or the second set of frequencies is prioritized. Numerous other aspects are provided.