Component Carrier Switching Without Intra-Band Uplink Delay
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication devices experience delays and inefficiencies during component carrier switching due to re-tuning and transmit chain switching, particularly when switching between bands, which can reduce communication speed and efficiency.
Innovation Solution
The wireless communication device determines whether the target component carrier is within the same band as the current carrier, allowing for immediate transmission without a switching delay if they are the same, and applies a delay only if they are different, thereby optimizing switching based on band alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the wireless communication device switches between component carriers in different bands, then the device can access more frequency resources and improve communication flexibility, but switching delay increases due to re-tuning and transmit chain changes
Solution Approach 1:
The patent segments component carriers into different bands (first band and second band) and applies different switching behaviors to each segment. Intra-band switching operates without delay while inter-band switching applies delay, allowing the system to maintain flexibility across bands while optimizing performance within each band segment.
Solution Approach 2:
The patent applies different quality characteristics to switching operations based on the band relationship. Intra-band switching receives preferential treatment with no delay applied, while inter-band switching receives standard delay treatment. This local differentiation optimizes the overall system by protecting high-priority same-band operations while maintaining acceptable performance for cross-band operations.
2Stability of the object's composition
If the wireless communication device applies switching delay for all component carrier transitions, then transmit chain stability is improved, but communication speed deteriorates due to unnecessary delays in same-band switching
Solution Approach 1:
The patent implements dynamic switching delay adjustment based on the band relationship between source and target component carriers. The system automatically adapts the delay parameter: zero delay for intra-band transitions and non-zero delay for inter-band transitions. This dynamic behavior allows the transmit chain to maintain stability when needed while enabling high-speed switching when safe.
Solution Approach 2:
The patent changes the switching delay parameter conditionally based on band alignment. The delay parameter is set to different values (zero or non-zero) depending on whether the source and target carriers belong to the same band. This parameter differentiation resolves the contradiction by applying stability measures only where necessary while maintaining speed where possible.
3Adaptability or versatility
If the wireless communication device performs re-tuning and transmit chain switching during component carrier transitions, then frequency switching capability is improved, but transmission efficiency deteriorates due to increased switching overhead
Solution Approach 1:
The patent segments the frequency spectrum into bands and further into component carriers within each band. By organizing carriers into intra-band and inter-band categories, the system can apply differentiated switching strategies that maintain frequency flexibility while reducing unnecessary re-tuning operations within the same band.
Solution Approach 2:
The patent changes the switching delay parameter based on band relationship, setting it to zero for intra-band transitions. This parameter adjustment eliminates unnecessary overhead for same-band switching while preserving full re-tuning capability for inter-band transitions, thereby maintaining frequency adaptability while improving overall transmission efficiency.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A wireless communication device is described. The wireless communication device includes a processor. The processor is configured to determine to switch from a first component carrier of a first band to a second component carrier. The processor is also configured to determine whether the second component carrier is included in the first band. The processor is further configured to, in a case it is determined that the second component carrier is included in the first band, transmit an uplink signal on the second component carrier.