SMTC SSB Measurement Scheduling for Wireless UE
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Solution Overview
Problem
Current wireless communication systems, particularly in LTE and NR technologies, face challenges in efficiently managing synchronization signal block (SSB) measurement time configurations, leading to overlapping SSB measurement occasions that disrupt data traffic and limit the performance of radio resource management (RRM) and beam management (BM) operations.
Innovation Solution
A method and apparatus for a user equipment (UE) to receive SSB measurement time configuration (SMTC) information, identifying the periodicity of SSB measurement occasions, and perform RRM or BM operations based on whether these occasions overlap, allowing for flexible scheduling and reduced interruption to data traffic by treating certain SSBs as non-overlapped and scaling the SMTC periodicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If SSB measurement occasions are performed frequently to improve measurement accuracy, then measurement precision is improved, but data traffic is disrupted and productivity deteriorates
Solution Approach 1:
The patent implements dynamic scheduling of SSB measurement occasions based on traffic conditions and beam management requirements. The network can flexibly adjust the timing and frequency of SSB measurements according to current system state, allowing measurements to be performed more frequently when traffic is light and less frequently when traffic demand is high, thus resolving the contradiction between measurement precision and productivity
Solution Approach 2:
The patent changes the temporal parameters of SSB measurement occasions by introducing configurable periodicity and offset values. By adjusting these parameters, the system can optimize the balance between measurement accuracy and data traffic performance, performing measurements at intervals that minimize disruption to ongoing data transmissions while still achieving required measurement precision
2Measurement precision
If SSB measurement occasions are performed frequently to improve RRM and BM operation accuracy, then measurement precision is improved, but resource usage efficiency deteriorates
Solution Approach 1:
The patent implements periodic SSB measurement occasions with configurable periods, allowing the UE to perform measurements at regular intervals rather than continuously. This periodic approach maintains measurement precision for RRM and BM operations while significantly reducing UE power consumption compared to continuous monitoring, as the UE can enter low-power states between measurement occasions
Solution Approach 2:
The patent applies partial action by performing SSB measurements only when necessary for RRM and BM operations rather than continuously. The network can configure measurement occasions to occur partially throughout the radio frame structure, focusing resources on critical measurement moments while allowing the UE to conserve energy during non-critical periods
3Measurement precision
If SSB measurement occasions overlap all SSBs to improve comprehensive coverage, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the SSB measurement process by dividing SSBs into different groups or sets that can be measured in different measurement occasions. This segmentation allows comprehensive coverage of all SSBs while simplifying the scheduling complexity, as each measurement occasion can focus on a specific subset of SSBs rather than requiring all SSBs to be measured simultaneously in a single complex occasion
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive synchronization signal block (SSB) measurement time configuration (SMTC) information that identifies a periodicity of a plurality of SSB measurement occasions. The UE may perform at least one of a radio resource management (RRM) operation or a beam management (BM) operation on a group of SSBs based at least in part on whether the plurality of SSB measurement occasions overlap all SSBs of the group of SSBs. Numerous other aspects are provided.