Intra-Frequency Measurement Scheduling in 5G Uplink
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Solution Overview
Problem
In wireless communication networks, especially in 5G/NR systems, intra-frequency measurements often collide with uplink transmissions, leading to interference and degraded performance due to the simultaneous use of multiple radio access technologies and frequency ranges, which complicates scheduling and resource management.
Innovation Solution
A novel scheduling restriction method is implemented to prioritize intra-frequency measurements over uplink transmissions by designating specific measurement gaps and symbols for wireless measurement, allowing the user equipment (UE) to adjust its operations to avoid collisions and optimize resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If intra-frequency measurements are performed simultaneously with uplink transmissions, then measurement coverage is improved, but interference increases and transmission reliability deteriorates
Solution Approach 1:
The patent segments the time-frequency resources by introducing measurement gaps and restricting uplink transmissions during specific measurement symbols. This segmentation separates the measurement function from the transmission function in time, allowing intra-frequency measurements to be performed without interfering with uplink transmissions, thereby resolving the contradiction between measurement coverage and transmission reliability
Solution Approach 2:
The network configures measurement gaps and scheduling restrictions in advance before measurements are performed. By preliminarily designating specific time resources for measurements and restricting uplink transmissions during these periods, the system proactively prevents interference before it occurs, ensuring both measurement accuracy and transmission reliability
2Reliability
If measurement gaps are introduced for intra-frequency measurements, then measurement reliability is improved, but uplink transmission continuity deteriorates
Solution Approach 1:
The patent applies scheduling restrictions locally only during specific measurement symbols and time gaps rather than globally across all transmission time. This localized approach ensures that measurement reliability is improved during measurement periods while minimizing the impact on uplink transmission continuity during non-measurement periods, allowing the system to maintain transmission quality where measurements are not performed
Solution Approach 2:
Measurement gaps are configured periodically with specific periodicity and duration parameters. This periodic structure allows the system to regularly perform measurements at predetermined intervals while maintaining uplink transmission continuity during the intervals between measurement gaps, thus balancing measurement reliability with transmission continuity
3Adaptability or versatility
If multiple radio access technologies and frequency ranges are used simultaneously, then network versatility is improved, but scheduling complexity increases
Solution Approach 1:
The patent implements dynamic scheduling restrictions that can be independently configured for different radio access technologies and frequency ranges. The network can dynamically adjust measurement gap patterns and scheduling restriction parameters based on specific service requirements and network conditions, allowing flexible support for multiple RATs and frequency ranges while managing scheduling complexity through technology-specific configuration
Data Source
AI summary
Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for use in a wireless network for scheduling intra-frequency measurements. Some embodiments are directed to a user equipment (UE). The UE includes processor circuitry and radio front circuitry. The processor circuitry can be configured to determine a collision signal status between an intra-frequency measurement signal and an uplink transmission signal. The processor circuitry can be further configured to determine a measurement gap status of the LIE. Moreover, the processor circuitry can be further configured to prioritize between the SSB measurement signal and the uplink transmission signal based on the collision signal status and the measurement gap status. Additionally, the processor circuitry can be further configured to perform a wireless measurement according to the prioritization between the intra-frequency measurement signal and the uplink transmission signal.