RF Module Activation for Beam Failure Prevention
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Solution Overview
Problem
In wireless communication devices using the mmwave band, the inability to immediately measure neighbor cell beams when the signal strength of the serving cell is weak leads to potential beam failure and inefficient battery usage, as devices must wait for measurement gaps to assess other frequency cells.
Innovation Solution
Implementing a method in user equipment (UE) to continuously measure neighbor beams or activate additional RF modules when the signal strength of the serving cell meets a predetermined criteria, allowing for proactive switching to stronger neighbor beams and reducing battery consumption by selectively activating only required RF modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the device waits for measurement gaps to measure neighbor cell beams, then battery power is conserved by keeping RF modules inactive, but beam failure risk increases when serving cell signal strength is weak
Solution Approach 1:
The patent applies preliminary action by continuously monitoring serving cell signal strength and proactively activating RF modules before beam failure occurs. When the signal strength falls below a threshold, the system activates additional RF modules to measure neighbor cell beams in advance, ensuring seamless handover capability before the current beam fails.
Solution Approach 2:
The patent implements feedback by continuously monitoring serving cell signal strength and using this information to dynamically control RF module activation. The system measures signal strength, compares it against thresholds, and adjusts RF module operation accordingly - activating when signal weakens and deactivating when signal recovers, creating a closed-loop control system that balances power consumption and reliability.
2Reliability
If multiple RF modules are continuously activated to measure neighbor beams, then beam failure is avoided through continuous monitoring, but battery power consumption increases
Solution Approach 1:
The patent applies dynamics by making RF module activation dynamic rather than static. The system continuously adapts RF module operation based on real-time serving cell signal strength conditions. RF modules are activated only when needed (when signal strength falls below threshold) and deactivated when not needed (when signal strength recovers), creating a dynamic power management strategy that responds to changing wireless conditions.
Solution Approach 2:
The patent changes the operational parameters of RF modules based on signal strength conditions. The system monitors serving cell signal strength and adjusts RF module activation state as a variable parameter - transitioning between active and inactive states based on threshold comparisons. This parameter-based control allows the system to optimize the balance between reliability and power consumption.
3Duration of action of stationary object
If only one RF module is used for beam management, then battery life is extended, but the device cannot immediately measure neighbor beams when serving cell signal is weak
Solution Approach 1:
The patent applies preliminary action by maintaining measurement capability in standby through continuous signal strength monitoring. When the serving cell signal strength falls below a threshold, the system proactively activates additional RF modules to measure neighbor cell beams before handover is needed, eliminating measurement delay while avoiding continuous operation of multiple RF modules.
Solution Approach 2:
The patent implements periodic action through continuous monitoring of serving cell signal strength at regular intervals. The system periodically checks signal strength conditions and activates RF modules based on threshold comparisons, creating a periodic measurement and control cycle that balances battery life with measurement responsiveness.
Data Source
AI summary
The present disclosure relates to a method and device for optimizing multiple radio frequency (RF) module operation of a user equipment (UE) in a wireless network. The method comprises: activating a first RF module from a plurality of RF modules available at the UE for communication with a serving beam in a serving cell while remaining RF modules are inactive, select at least one RF module from the remaining inactivate RF modules to measure at least one neighbor beam from a plurality of neighbor beams of each neighbor cell, and create a list of available neighbor beams in neighbor cells based on the measurements, determining whether a signal strength associated with the serving beam meets a signal criteria, and performing one of continuing communication with the serving beam using the first RF module in response to determining that the signal strength associated with the serving beam does not meet the signal criteria, and switching the communication from the serving beam to the at least one neighbor beam based on the measurement for continuing the communication in response to determining that the signal strength associated with the serving beam meets the signal criteria.