UE Cell Measurement Timing for Low-Power Mobility Tracking
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently performing cell measurement for mobility of user equipment (UE) in wireless communication systems, particularly in ultra-high frequency bands and in environments with diverse technologies such as beamforming and massive MIMO, where power consumption and network efficiency are critical.
Innovation Solution
A method and apparatus for performing cell measurement in UE, involving the reception of SMTC information from a base station, determining measurement start times and occasions, and optimizing power consumption through wake-up signals (WUS) and discontinuous reception (DRX) configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous cell measurement is performed for UE mobility, then mobility management reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic cell measurement at specific measurement occasions rather than continuous measurement. The UE performs measurements only during configured measurement windows (SMTC periods), allowing the radio frequency to be turned off between measurements, thus reducing power consumption while maintaining mobility management reliability through regular periodic updates.
Solution Approach 2:
The network pre-configures measurement timing configurations (SMTC) and measurement occasions before the UE performs measurements. This preliminary configuration allows the UE to know in advance when measurements are required, enabling efficient power management by sleeping between configured measurement occasions rather than continuously monitoring.
2Measurement precision
If frequent measurement occasions are configured, then measurement precision is improved, but network signaling overhead increases
Solution Approach 1:
The patent combines multiple measurement configurations into unified SMTC (Synchronization Signal Measurement Timing Configuration) parameters that define periodic measurement windows. By merging measurement timing, frequency, and occasion configurations into standardized SMTC structures, the network reduces signaling overhead while maintaining precise measurement scheduling through consolidated configuration messages.
3Adaptability or versatility
If multiple SMTC information parameters are transmitted, then measurement configuration completeness is improved, but message size increases
Solution Approach 1:
The patent segments comprehensive measurement configuration into structured SMTC information blocks that can be transmitted efficiently. The SMTC parameters are organized into distinct configurable elements (periodicity, offset, duration, measurement occasions) that can be selectively configured and transmitted, reducing redundant information while maintaining complete measurement configuration capability.
Data Source
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AI summary
The disclosure relates to a method and apparatus for performing cell measurement for mobility of a user equipment (UE) in a wireless communication system, and a communication method of the UE according to an embodiment of the disclosure may include: receiving, from a base station (BS), a system information block (SIB) including first signal/physical broadcast channel (SS/PBCH) block measurement time configuration (SMTC) information and second SMTC information; determining a measurement start time based on timing offset and duration included in the first SMTC information; determining a measurement occasion based on first periodicity included in the first SMTC information and second periodicity included in the second SMTC information; and performing measurement according to the measurement start time and the measurement occasion, based on the second SMTC information.