Adaptive SSB Measurement Sampling for UE Mobility Changes
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Solution Overview
Problem
Existing wireless communication systems face inaccuracies in communication quality determination and increased power consumption due to inappropriate initial synchronization signal block (SSB) measurement periodicities, which are not adjusted for user equipment (UE) mobility.
Innovation Solution
The UE adjusts SSB measurement periodicity based on its mobility, using a scaling factor to increase or decrease the initial periodicity, ensuring accurate communication quality assessment and reducing unnecessary measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed initial SSB measurement periodicity is used, then the measurement process is simple to implement, but communication quality determination becomes inaccurate when UE mobility changes
Solution Approach 1:
The patent applies dynamics by making the SSB measurement periodicity adjustable rather than fixed. The UE dynamically adapts the measurement periodicity based on its mobility state, transitioning between different periodicity values (e.g., first periodicity for low mobility, second periodicity for high mobility). This resolves the contradiction by allowing the system to maintain measurement accuracy through adaptation while keeping the base mechanism relatively simple.
Solution Approach 2:
The patent changes the measurement periodicity parameter based on UE mobility conditions. When mobility is detected (through beam failures or beam changes), the system switches from a first measurement periodicity to a second measurement periodicity. This parameter adjustment enables accurate communication quality determination across different mobility scenarios without requiring a completely complex measurement framework.
2Measurement precision
If measurement periodicity is increased to improve accuracy for mobile UEs, then communication quality determination improves, but power consumption increases
Solution Approach 1:
The patent dynamically adjusts measurement periodicity based on UE mobility state. For stationary or low-mobility UEs, a longer first measurement periodicity is used to reduce power consumption. For high-mobility UEs, a shorter second measurement periodicity is applied to maintain accuracy. This dynamic adaptation resolves the contradiction by matching measurement intensity to actual mobility needs.
Solution Approach 2:
The system changes the measurement periodicity parameter conditionally based on mobility detection. When mobility is detected (via beam failures or beam changes), the periodicity is reduced to maintain accuracy; otherwise, a longer periodicity is used to save power. This conditional parameter adjustment optimizes the trade-off between measurement accuracy and power consumption.
3Measurement precision
If frequent measurements are performed to track mobile UE, then communication quality accuracy improves, but unnecessary measurements increase power consumption
Solution Approach 1:
The patent implements dynamic measurement periodicity adjustment based on detected mobility events. The UE transitions from a first measurement periodicity to a second (shorter) periodicity only when mobility is detected through beam failures or beam changes. This dynamic approach ensures accurate tracking of mobile UEs while avoiding frequent measurements when the UE is stationary, thus reducing energy loss from unnecessary measurements.
Solution Approach 2:
The measurement periodicity parameter is changed conditionally based on mobility detection criteria (beam failures, beam changes). When these criteria indicate mobility, the system switches to a shorter periodicity for accurate tracking. When criteria are not met, the longer first periodicity is maintained to avoid unnecessary measurements and reduce power consumption.
4Use of energy by moving object
If a longer measurement periodicity is used to reduce power consumption, then energy efficiency improves, but communication quality determination becomes inaccurate for mobile UEs
Solution Approach 1:
The patent applies dynamics by making measurement periodicity adaptive to UE mobility state. The system uses a longer first periodicity for power efficiency when UE is stationary, and automatically switches to a shorter second periodicity when mobility is detected. This dynamic switching resolves the contradiction by ensuring accurate communication quality determination for mobile UEs while maintaining energy efficiency for stationary UEs.
Solution Approach 2:
The measurement periodicity parameter is adjusted based on mobility detection. When mobility is detected (through beam failures or beam changes), the system switches from a long first periodicity to a shorter second periodicity to maintain accuracy. When no mobility is detected, the long first periodicity is maintained for power efficiency. This conditional parameter change resolves the accuracy-power consumption trade-off.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) receives a first synchronization signal block (SSB) from a network entity, where the first SSB is received via a first SSB beam, and where communication between the UE and the network entity is based on the SSB. The UE obtains measurements of one or more second SSBs while the UE is in communication with the network entity, where the one or more second SSBs are received via respective second SSB beams, and where a target SSB measurement periodicity for collection of the measurements of the one or more second SSBs via the respective second SSB beams is based on a mobility associated with the UE.