Uplink Transmission Switching for Carrier Aggregation
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in uplink transmission switching processes, particularly in inter-band carrier aggregation, leading to suboptimal utilization of radio frequency (RF) resources.
Innovation Solution
The implementation of enhanced uplink transmission switching processes in wireless devices and base stations, allowing for dynamic switching between uplink carriers to efficiently manage RF resources, leveraging advanced protocols and configurations such as bandwidth part adaptation and carrier aggregation techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic switching between uplink carriers is implemented, then RF resource utilization is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic transmission switching that allows the wireless device to switch between different uplink carriers (e.g., TDD and FDD carriers) based on real-time traffic demands and channel conditions. This dynamic adaptation enables the system to optimize RF resource utilization by selecting the most appropriate carrier type for current transmission requirements, thereby resolving the contradiction between improved productivity and increased device complexity through intelligent, condition-based decision making
Solution Approach 2:
The system changes transmission parameters dynamically by adjusting carrier selection, bandwidth part configurations, and transmission modes based on measured channel conditions and traffic patterns. This parameter adaptation allows the system to optimize performance metrics while managing complexity through standardized parameter adjustment mechanisms rather than fundamental architectural changes
2Productivity
If bandwidth part adaptation is used, then uplink data rates are improved, but processing requirements increase
Solution Approach 1:
The patent applies bandwidth part adaptation by dividing the uplink carrier into multiple bandwidth parts (BWPs), each optimized for different transmission scenarios. This segmentation allows the system to allocate appropriate bandwidth resources for high-data-rate services like HD video calls and augmented reality only when needed, rather than continuously processing full bandwidth, thereby reducing overall processing power requirements while maintaining high uplink data rates during peak demand periods
3Productivity
If carrier aggregation is implemented, then network throughput is improved, but coordination complexity increases
Solution Approach 1:
The patent implements carrier aggregation with a universal transmission framework that can operate across multiple carrier types (TDD, FDD, and mixed configurations). This multi-functionality allows the system to aggregate carriers for improved network throughput while using a unified coordination mechanism that reduces complexity by applying consistent management principles across different carrier types rather than requiring separate coordination protocols for each carrier type
Data Source
AI summary
A wireless device may receive a DCI comprising scheduling information for a second uplink transmission via a second carrier. A second timing of the second uplink transmission may be after a first timing of a first uplink transmission via a first carrier. The second uplink transmission may result in an uplink TX switching from the first carrier to the second carrier. Based on the DCI, the wireless device may determine whether a location of a switching period, associated with the uplink TX switching, is on the first carrier or on the second carrier. An uplink transmission may be omitted during the switching period.