Dynamic Uplink Gap Configuration for FR2 Transceiver Calibration
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing uplink gaps for self-calibration and monitoring, particularly in terms of power efficiency, power consumption, and transceiver calibration due to temperature variations, which are not adequately addressed by existing technologies.
Innovation Solution
The implementation of a method to configure and manage uplink gaps using radio resource control (RRC) configurations, medium access control elements (MAC CE), and additional metrics such as power headroom, PCMAX,f,c, and P field to determine the activation and deactivation of uplink gaps for body proximity sensing and power management, allowing for dynamic adjustment based on UE capabilities and network conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If uplink gaps are activated for self-calibration and monitoring in FR2, then transceiver calibration accuracy and power management capability are improved, but power consumption and system complexity increase
Solution Approach 1:
The patent implements dynamic activation and deactivation of uplink gaps based on real-time network conditions and UE capabilities. The base station configures multiple UL gap patterns with different periodicities and durations, selecting appropriate patterns through RRC signaling and MAC CE commands based on current calibration needs, thereby avoiding continuous operation and reducing power consumption while maintaining calibration accuracy when needed
Solution Approach 2:
The patent introduces multiple configurable parameters for UL gaps including periodicity (e.g., 0.5ms, 1ms, 2ms, 4ms, 8ms, 16ms, 32ms, 64ms), duration (e.g., 250us, 500us, 1ms, 2ms, 4ms, 8ms, 16ms, 32ms, 64ms), and offset values. These parameters are dynamically adjusted through RRC configuration and MAC CE activation to optimize the balance between calibration precision and power consumption based on specific network scenarios
2Measurement precision
If uplink gaps are configured with frequent periodicity for better calibration, then transceiver monitoring accuracy is improved, but power consumption and loss of transmission time increase
Solution Approach 1:
The system dynamically selects UL gap periodicity based on calibration requirements and network conditions. For frequent calibration needs, shorter periodicities (0.5ms, 1ms) are configured; for less critical scenarios, longer periodicities (8ms, 16ms, 32ms, 64ms) are used. This dynamic adaptation ensures monitoring accuracy is maintained only when necessary, minimizing transmission time loss
Solution Approach 2:
The patent implements periodic uplink gaps with configurable intervals ranging from 0.5ms to 64ms. The base station activates specific periodic patterns based on UE capability reports and network conditions, allowing the system to perform calibration and monitoring at optimized intervals rather than continuously, thus balancing monitoring accuracy with transmission efficiency
3Adaptability or versatility
If multiple UL gap patterns are configured for different scenarios, then adaptability to varying network conditions is improved, but device complexity and configuration overhead increase
Solution Approach 1:
The patent segments the UL gap configuration into multiple independent patterns, each with specific periodicity, duration, and offset parameters. The base station configures multiple patterns (e.g., pattern 0, pattern 1, pattern 2) through RRC signaling, and activates only the necessary patterns based on current network conditions and UE capabilities, reducing the effective complexity while maintaining adaptability
Solution Approach 2:
The patent creates a universal UL gap configuration framework that can handle multiple scenarios (calibration, monitoring, power saving) through a single set of configurable parameters and activation mechanisms. The same RRC configuration and MAC CE activation process applies to all UL gap patterns regardless of their specific use case, simplifying the overall system complexity while providing versatile adaptability
Data Source
AI summary
Triggering an uplink (UL) gap at a base station may include decoding a user equipment (UE) UL gap capability report received from a UE. A radio resource control (RRC) UL gap configuration for transmission to the UE may be encoded. The RRC UL gap configuration may include configuration information associated with at least one of a periodicity, offset, or length. Measurement information received from the UE may be decoded. The measurement information may include at least one of a power headroom value, a PCMAX,f,c value, or a P value. Based on the power headroom value, the PCMAX,f,c value, or the P value, the UL gap configuration may be activated by encoding a medium access control (MAC) control element (MAC CE) for transmission to the UE.