Gap-Free SSB Inter-Frequency Measurement Scheduling With SMTC Windows
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Solution Overview
Problem
Existing wireless communication systems face challenges in scheduling availability and measurement sharing for SSB-based inter-frequency measurements without measurement gaps, particularly in scenarios where SSBs have different subcarrier spacings or Rx beam sweeping occurs, leading to unclear UE behaviors and resource conflicts.
Innovation Solution
Implement scheduling restrictions and measurement resource sharing mechanisms for UEs performing inter-frequency measurements without measurement gaps, including specific restrictions on uplink and downlink transmissions based on SMTC window durations and numerology support, and using scaling factors for measurement periods and gap sharing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If SSB-based inter-frequency measurement without measurement gap is implemented, then measurement efficiency and resource utilization are improved, but scheduling availability and measurement sharing become unclear leading to resource conflicts
Solution Approach 1:
The patent segments the measurement procedure by defining specific SMTC windows for inter-frequency measurements without measurement gaps. It divides the scheduling availability into distinct time periods where measurements can occur without conflicting with uplink/downlink transmissions, thereby resolving the complexity while maintaining measurement efficiency.
Solution Approach 2:
The patent introduces dynamic scheduling restrictions that adapt based on the UE's numerology support and beam sweeping configuration. The network can dynamically adjust the SMTC window parameters and measurement sharing rules to match current network conditions, resolving scheduling conflicts while preserving measurement productivity.
2Adaptability or versatility
If SSBs with different subcarrier spacings are used for inter-frequency measurement, then measurement flexibility is improved, but UE behavior becomes unclear due to numerology differences
Solution Approach 1:
The patent applies local quality by defining specific numerology requirements for different measurement scenarios. It specifies that UEs should only perform measurements on SSBs with numerologies they support, and introduces separate SMTC window configurations for different numerology combinations, making UE behavior clear while maintaining measurement flexibility.
Solution Approach 2:
The patent changes key parameters including SMTC window duration, periodicity, and offset based on the UE's numerology support. It introduces conditional parameter adjustments where measurement timing and resource allocation are modified according to the specific numerology combination, ensuring clear UE behavior while preserving adaptability to different frequency ranges.
3Measurement precision
If Rx beam sweeping is performed for inter-frequency measurement, then measurement accuracy is improved, but scheduling conflicts arise without measurement gaps
Solution Approach 1:
The patent applies preliminary action by configuring SMTC windows in advance that are specifically designed to accommodate beam sweeping sequences. The network pre-allocates measurement resources and defines timing structures that ensure beam sweeping can complete without conflicting with data transmissions, maintaining both accuracy and resource utilization.
Solution Approach 2:
The patent introduces the SMTC window configuration as an intermediary mechanism that mediates between beam sweeping requirements and uplink/downlink scheduling. This intermediary structure provides a protected time window where measurements can occur without resource conflicts, resolving the contradiction between measurement precision and overall system productivity.
4Reliability
If measurement restrictions are applied during SMTC window duration, then measurement reliability is improved, but uplink and downlink transmission opportunities are reduced
Solution Approach 1:
The patent applies periodic action by configuring SMTC windows that occur at regular intervals defined by SMTC periodicity. This periodic structure ensures measurements occur reliably at predetermined times without permanently blocking transmissions, as the restrictions are temporary and recurring rather than continuous, thus maintaining both measurement reliability and transmission efficiency.
Solution Approach 2:
The patent uses partial action by applying measurement restrictions only during the specific SMTC window duration rather than continuously. The restrictions are limited to the minimum necessary time to complete measurements, allowing uplink and downlink transmissions to proceed normally outside these windows, thereby maintaining measurement reliability while minimizing impact on transmission productivity.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. SSB based inter-frequency measurements may include configuring a UE to perform inter-frequency measurements without measurement gap within a measurement window, and applying scheduling restrictions to prioritize the inter-frequency measurements over uplink transmissions within the measurement window. The measurement window includes an SMTC window duration. Measurement resource sharing or restriction is described for SSB based inter-frequency measurement objects without measurement gap.