Dynamic TCI State Reduction for Beam Failure Recovery
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Solution Overview
Problem
Wireless communication systems face challenges in managing beam configurations effectively, particularly when user equipment (UE) transitions between different operation modes, leading to performance degradation and unnecessary resource consumption.
Innovation Solution
The method involves configuring user equipment (UE) with a set of transmission configuration indicator (TCI) states and allowing the UE to detect changes in operation modes. Upon detection, the UE transmits information to the network entity indicating it will monitor and report on a reduced number of TCI states, thereby conserving resources and reducing unnecessary reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE monitors and reports on all configured TCI states, then beam management accuracy is maintained, but time-frequency resources and power are wasted due to unnecessary measurements and reports
Solution Approach 1:
The patent dynamically adjusts the number of TCI states to monitor based on the UE's operation mode. When the UE detects a change from a first operation mode to a second operation mode, it reduces the number of monitored TCI states from a first number to a second number. This dynamic adaptation allows the system to maintain beam management accuracy when needed while reducing power consumption during operation modes where full monitoring is unnecessary.
Solution Approach 2:
The patent changes the parameter of TCI state quantity based on operation mode transitions. The network configures the UE with a set of TCI states, and the UE selectively monitors a subset of these states depending on its current operation mode. This parameter change enables the system to optimize between measurement precision and power consumption by adjusting the scope of monitoring according to operational requirements.
2Reliability
If the UE monitors and reports on all configured TCI states, then beam management completeness is ensured, but resource efficiency decreases due to redundant transmissions and receptions
Solution Approach 1:
The system dynamically adjusts monitoring scope based on operation mode. The UE transitions from monitoring a first number of TCI states in a first operation mode to monitoring a second number of TCI states in a second operation mode, where the second number is less than the first number. This dynamic adjustment ensures beam management completeness when required while improving resource efficiency by eliminating redundant measurements and reports during operation modes where fewer states are sufficient.
Solution Approach 2:
The patent applies partial action by having the UE monitor only a subset of configured TCI states rather than all states. Based on the detected operation mode change, the UE determines that monitoring a reduced set of TCI states is sufficient, thereby performing partial monitoring that maintains necessary beam management functionality while avoiding the excessive resource consumption associated with monitoring all configured states.
3Area of stationary object
If the network configures a large number of TCI states, then coverage and beam diversity are improved, but system complexity and processing overhead increase
Solution Approach 1:
The patent segments the set of configured TCI states into different monitoring groups based on operation mode. The network configures a comprehensive set of TCI states to ensure coverage and beam diversity, but the UE segments this set by monitoring only a relevant subset appropriate for its current operation mode. This segmentation approach allows the system to maintain large TCI state configurations for coverage while reducing the effective complexity by processing only necessary subsets.
Solution Approach 2:
The system dynamically adjusts the active monitoring subset of TCI states based on operation mode transitions. When the UE detects a change from a first operation mode to a second operation mode, it dynamically reduces the number of monitored TCI states from a first number to a second number. This dynamic behavior allows the system to maintain comprehensive TCI state configurations for coverage purposes while reducing processing overhead by activating only the necessary subset for each operation mode.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for improving beam management. An example method includes receiving, from a network entity, configuration information configuring the UE with a set of transmission configuration indicator (TCI) states, wherein the configured set of TCI states comprises a first number of TCI states for use in communicating with the network entity, detecting a change in an operation mode of the UE from a first operation mode to a second operation mode, and transmitting, based on the detected change in the operation mode of the UE, information to the network entity indicating the UE will monitor and report on a reduced second number of TCI states of the configured set of TCI states relative to the first number of TCI states.