Antenna Selection Controller for Wireless Transmit Diversity
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Solution Overview
Problem
Wireless communication systems face challenges in maximizing power transmit and receive levels across multiple radio access technologies, particularly due to issues like antenna blocking and varying performance across different operating modes, which affect regulatory compliance and communication quality.
Innovation Solution
A wireless communication apparatus with multiple antennas and transmit circuits configured to operate across different radio access technologies, featuring a controller that selectively switches antennas based on priority levels of data and detected operating modes to optimize performance and comply with regulatory limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single antenna is used for all transmit circuits, then device complexity is reduced, but communication performance and power efficiency deteriorate due to antenna blocking and varying performance across different operating modes
Solution Approach 1:
The patent implements dynamic antenna selection where the controller autonomously determines and switches between different antenna configurations based on detected operating modes and data priority levels. This dynamic adaptation allows the system to optimize communication performance for each specific operating condition rather than using a fixed single-antenna configuration, resolving the contradiction between simplicity and reliability.
Solution Approach 2:
The system changes the operational parameters by selecting different antennas from the plurality of antennas based on detected operating modes and data priorities. This parameter change approach allows the same physical antenna array to serve multiple functions optimally across different radio access technologies and operating conditions, improving reliability without permanently increasing device complexity.
2Reliability
If antenna selection is performed dynamically based on operating modes and data priorities, then communication performance and power efficiency are improved, but device complexity increases due to additional control mechanisms
Solution Approach 1:
The controller is configured to autonomously detect operating modes and determine optimal antenna selections without requiring external control or complex intervention mechanisms. This self-service approach simplifies the control architecture while still achieving dynamic optimization, as the system self-manages the antenna selection process based on its own detected state and stored mapping information.
Solution Approach 2:
The system pre-stores mapping information that associates different operating modes and data priority levels with optimal antenna selections. This preliminary preparation of mapping data allows the controller to make rapid antenna selection decisions without requiring complex real-time calculations or control algorithms, reducing the actual control mechanism complexity while maintaining performance optimization.
3Ease of operation
If the same antenna is used across different radio access technologies, then ease of operation is improved, but power efficiency and regulatory compliance deteriorate due to varying performance characteristics
Solution Approach 1:
The plurality of antennas is designed to serve multiple radio access technologies universally, with each antenna capable of supporting different RATs. The mapping information stored in the controller enables the system to selectively assign appropriate antennas to different RATs based on operating modes and data priorities, achieving both ease of operation (through unified antenna management) and power efficiency (through optimal antenna-RAT matching).
Data Source
AI summary
This disclosure provides systems, methods, and apparatus for mobile transmit diversity. In one aspect, a wireless communication apparatus is provided. The wireless communication apparatus includes a plurality of antennas. The wireless communication apparatus further includes a plurality of transmit circuits, each transmit circuit of the plurality of transmit circuits being configured to transmit according to a different radio access technology. The wireless communication apparatus further includes a controller configured to selectively switch each of the transmit circuits of the plurality of transmit circuits to transmit wireless communications via a corresponding one of the plurality of antennas based on priority levels of data for each of the transmit circuits and a detected operating mode of the wireless communication apparatus.