Beamforming Secondary Component Carriers in Carrier Aggregation
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Solution Overview
Problem
Existing systems fail to effectively perform beamforming on secondary component carriers during carrier aggregation in wireless communication, leading to suboptimal service quality for wireless devices, especially when conditions trigger beamforming at the access node.
Innovation Solution
The system determines beamforming signal conditions for both primary and secondary component carriers by leveraging signal information from proximate wireless devices, allowing beamformed signals to be transmitted over both frequency bands, thereby enhancing service quality through carrier aggregation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If beamforming is performed only on primary component carrier during carrier aggregation, then device complexity is reduced, but channel quality and data rate deteriorate for wireless devices at edge locations
Solution Approach 1:
The patent segments the carrier aggregation into primary component carrier (PCC) and secondary component carrier (SCC), applying beamforming selectively to SCC while maintaining conventional transmission on PCC. This segmentation allows beamforming benefits to be realized on specific carriers without requiring complex beamforming implementation across all carriers, thus improving channel quality for edge devices while controlling overall system complexity.
Solution Approach 2:
The patent applies beamforming locally to secondary component carriers rather than uniformly across all carriers. By identifying devices at edge locations and applying beamforming specifically to their SCC transmissions, the system improves channel quality where needed without incurring the full complexity burden of system-wide beamforming implementation.
2Reliability
If beamforming is applied to secondary component carriers, then channel quality and data rate improve, but device complexity and processing requirements increase
Solution Approach 1:
The patent implements dynamic beamforming where the access node determines beamforming parameters based on real-time channel conditions and device locations. Beamforming is applied adaptively to SCCs based on whether devices are at edge locations, allowing the system to improve channel quality when needed while avoiding unnecessary processing complexity when beamforming is not beneficial.
Solution Approach 2:
The patent changes transmission parameters by applying beamforming specifically to SCCs rather than PCCs. By modifying the transmission approach on secondary carriers while keeping primary carrier transmission conventional, the system achieves improved channel quality with controlled increases in processing complexity only where necessary.
3Productivity
If beamforming is performed on both primary and secondary component carriers, then data rate increases, but loss of energy increases due to additional processing
Solution Approach 1:
The patent segments the carrier aggregation transmission, applying beamforming energy-intensive processing only to secondary component carriers while maintaining conventional lower-energy transmission on primary component carriers. This segmentation enables the system to increase data rate through beamforming on SCCs without incurring the full energy cost of beamforming across all carriers.
Solution Approach 2:
The patent applies beamforming partially rather than completely across all carriers. By applying beamforming only to SCCs and not PCCs, the system achieves partial beamforming benefits that increase data rate while avoiding the excessive energy consumption that would result from full system-wide beamforming implementation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach ensures improved channel quality and data rate for wireless devices by applying beamforming to both primary and secondary component carriers, providing enhanced wireless services, especially for devices at the edge of the communication area.
Implementation Method 1
Beamforming signal conditions may be determined for the first wireless device on the first frequency band and the second wireless device on the second frequency band. Beam formed signals may be transmitted to the first wireless device over the first frequency band using the beamforming signal conditions for the first wireless device and over the second frequency band using the beamforming signal conditions for the second wireless device.
Data Source
AI summary
Systems and methods are described for performing beamforming during carrier aggregation. It may be determined that conditions at an access node and a first wireless device meet a beamforming criteria, wherein the access node and the first wireless device communicate using carrier aggregation including a first frequency band comprising a primary carrier and a second frequency band comprising a component carrier. Data may be communicated between the access node and a second wireless device over the second frequency band, wherein the second wireless device is proximate to the first wireless device. Beamforming signal conditions may be determined for the first wireless device on the first frequency band and the second wireless device on the second frequency band. Beam formed signals may be transmitted to the first wireless device over the first frequency band using the beamforming signal conditions for the first wireless device and over the second frequency band using the beamforming signal conditions for the second wireless device.