Scalable Bandwidth Reception in Carrier Aggregation
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Solution Overview
Problem
Current technologies face challenges in supporting scalable bandwidths in carrier aggregation environments, where mobile terminals need to communicate with base stations having different bandwidths, and existing methods for downlink synchronization and physical broadcast channels are not adaptable to varying total transmission bandwidths.
Innovation Solution
The proposed solution involves a reception and transmission apparatus with band pass filters, reception/path forming units, and control units that adjust center frequencies and bandwidths of signals to form multiple path modules, enabling scalable bandwidth support in carrier aggregation environments by filtering and modulating signals across different bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed bandwidth structure is used for downlink synchronization and physical broadcast channels, then the system is simple to implement, but it cannot adapt to base stations with different bandwidths in carrier aggregation environments
Solution Approach 1:
The reception apparatus is divided into multiple reception path modules, each capable of processing signals at different bandwidths. The bandwidth adaptation unit selectively activates appropriate reception paths based on the detected bandwidth, enabling the system to handle various bandwidth configurations without requiring a completely different reception structure for each case.
Solution Approach 2:
The reception structure incorporates dynamic bandwidth adaptation through the bandwidth adaptation unit, which can adjust the active reception paths based on the detected bandwidth. This dynamic configuration allows the system to transition between different bandwidth modes (1.4, 3, 5, 10, 15, and 20 MHz) while maintaining a single unified reception structure.
2Adaptability or versatility
If multiple reception paths are configured to support different bandwidths, then bandwidth adaptability is improved, but the device complexity increases
Solution Approach 1:
Multiple reception path modules are configured with identical functional capabilities, each capable of processing signals at different bandwidths. The bandwidth adaptation unit selectively activates the appropriate reception paths based on the detected bandwidth, allowing the system to support scalable bandwidths (1.4, 3, 5, 10, 15, and 20 MHz) using a universal reception path design rather than requiring specialized paths for each bandwidth.
3Reliability
If the reception structure is optimized for a specific bandwidth, then performance is improved, but compatibility with other bandwidths deteriorates
Solution Approach 1:
Each reception path module is designed with local optimization for specific bandwidth processing, while the bandwidth adaptation unit provides global coordination by selecting and configuring the appropriate reception paths based on the detected bandwidth. This allows each local reception path to be optimized for its specific function while the overall system maintains compatibility with multiple bandwidths through intelligent path selection and configuration.
Data Source
AI summary
Provided are a reception apparatus and transmission apparatus for supporting a scalable bandwidth in a carrier aggregation environment. The reception apparatus and transmission apparatus can link carrier aggregation technology and scalable bandwidth technology by supporting a scalable bandwidth having different bandwidths in size in a carrier aggregation environment, thereby enhancing compatibility between different wireless communication systems.