Shared Antenna Arbitration for Multi-Protocol Wireless
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Solution Overview
Problem
Electronic devices with small form factors face reduced wireless communication performance due to radio interference caused by the close proximity of antennas, limiting the number of dedicated antennas that can be used, which affects concurrent use cases such as high-quality video streaming and Bluetooth operations.
Innovation Solution
Implementing a system with shared antennas for multi-protocol communication, utilizing a directional coupler and arbitration algorithms to manage access to antennas, allowing concurrent operation of WiFi and Bluetooth radios while maintaining performance comparable to systems with more antennas, through intelligent determination and prioritization of communication protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated antennas are used for different communication protocols, then communication performance is improved, but device form factor increases
Solution Approach 1:
The patent implements a shared antenna system where a single antenna serves multiple communication protocols (WiFi and Bluetooth) through protocol-specific processing paths. The antenna is coupled to a WiFi radio and a Bluetooth radio via a coupler, allowing one antenna to perform multiple functions that traditionally required separate antennas, thereby reducing device form factor while maintaining communication performance.
Solution Approach 2:
The patent merges the WiFi antenna and Bluetooth antenna into a single shared antenna system. By combining the antenna resources and using a coupler to separate the signal paths for different protocols, the system reduces the number of physical antennas needed while preserving the functionality of both WiFi and Bluetooth communications.
2Volume of moving object
If antennas are placed in close proximity to reduce form factor, then device size is reduced, but radio interference increases
Solution Approach 1:
The patent segments the signal paths for WiFi and Bluetooth communications using a coupler that separates the shared antenna into protocol-specific paths. This segmentation allows independent processing of WiFi and Bluetooth signals, reducing mutual interference while maintaining compact antenna placement. The coupler creates distinct signal channels that can be processed separately despite sharing the same physical antenna.
Solution Approach 2:
The coupler acts as an intermediary component between the shared antenna and the separate WiFi/Bluetooth radio paths. It mediates the signal flow, allowing the antenna to serve both protocols while minimizing interference through protocol-specific processing. The intermediary structure enables close antenna placement without the harmful effects of direct interference.
3Reliability
If multiple dedicated antennas are used for concurrent communications, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The shared antenna system allows a single antenna to support concurrent WiFi and Bluetooth communications by providing protocol-specific processing paths. This eliminates the need for multiple dedicated antennas, reducing power consumption while maintaining the reliability of concurrent communications through the coupler-based signal separation.
4Productivity
If multiple dedicated antennas are used for concurrent communications, then communication throughput is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple antenna functions into a single shared antenna system with protocol-specific processing paths. This reduces device complexity by eliminating redundant antenna structures while maintaining communication throughput through the coupler that enables simultaneous WiFi and Bluetooth operations with one antenna.
Data Source
AI summary
Systems, methods, and computer-readable media are disclosed for using shared antennas for multi-protocol communication. Example devices may include a first antenna, a second antenna, memory and at least one processor configured to access the memory and execute computer-executable instructions to determine a first request for a first wireless radio to transmit first data for a first duration, determine a second request for a second wireless radio to receive second data during the first duration, and determine that a first signal strength associated with the first wireless radio is less than or equal to a first threshold. Certain embodiments may be configured to determine that communication associated with the first wireless radio has a higher priority than communication associated with the second wireless radio, cause the first wireless radio to transmit the first data using a first antenna for the first duration, and cause a second antenna to be idle.