Antenna Switching Controller for Wireless Coexistence
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The coexistence of WLAN and Bluetooth wireless communication services sharing a single or dual antennas leads to interference and performance degradation due to conflicting operation times and signal overlap, resulting in failed acknowledgments and decreased throughput.
Innovation Solution
A wireless communication chipset with a combine-separate unit and a switching device that generates combined signals for transmission and separates received signals, allowing for selective transmission and reception of signals from both modules without interference, using a directional coupler or hybrid coupler to manage antenna usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If WLAN and Bluetooth modules share a single antenna, then device complexity and space are reduced, but signal interference and transmission reliability deteriorate
Solution Approach 1:
The patent implements dynamic time-division multiplexing where the antenna switching controller dynamically allocates antenna usage rights between WLAN and Bluetooth modules based on real-time transmission requirements. The system continuously monitors transmission states and adjusts antenna assignment in real-time, allowing both modules to share the single antenna without constant interference while maintaining transmission reliability.
Solution Approach 2:
The patent introduces an antenna switching controller as an intermediary component that mediates between WLAN and Bluetooth modules. This controller receives transmission requests from both modules, determines priority and timing, and controls the antenna switch accordingly. The intermediary resolves conflicts before they manifest as signal interference, enabling reliable coexistence on a single antenna.
2Productivity
If WLAN and Bluetooth modules operate simultaneously on the same frequency band, then communication efficiency is improved, but signal interference and acknowledgment failure increase
Solution Approach 1:
The patent implements periodic time-division multiplexing where WLAN and Bluetooth operations are scheduled in alternating time slots. During WLAN transmission periods, Bluetooth remains idle, and vice versa. This periodic allocation ensures that acknowledgments are transmitted during dedicated time windows without interference, while maintaining overall communication efficiency through continuous alternating operation.
Solution Approach 2:
The patent incorporates feedback mechanisms where the antenna switching controller monitors transmission outcomes including acknowledgment receipts. When interference or acknowledgment failures are detected, the system adjusts future antenna allocation and timing based on this feedback, optimizing the balance between communication efficiency and reliability adaptively.
3Reliability
If the antenna is switched between WLAN and Bluetooth services, then signal interference is reduced, but transmission time delay and throughput degradation occur
Solution Approach 1:
The patent implements preliminary action by pre-scheduling antenna allocation and transmission timing for both WLAN and Bluetooth modules. The antenna switching controller prepares and queues transmission requests in advance, assigning specific time slots and antenna usage rights before actual data transmission begins. This proactive scheduling minimizes waiting time and reduces delays caused by reactive antenna switching.
Data Source
AI summary
A system for the coexistence between wireless communication modules sharing an antenna is disclosed. A wireless communication chipset includes a first wireless communication module capable of transmitting and receiving first wireless communication signals, a second wireless communication module capable of transmitting and receiving second wireless communication signals and a combine-separate unit capable of generating a first combined signal and separating a second combined signal. The switching device is configured to selectively transmit the first combined signal or receive the second combined signal. The connection device has a first port coupled to an antenna, a second port connected to the first port for transmitting the first combined signal or receiving the second combined signal, and a third port connected to the first port for transmitting or receiving the second wireless communication signals via the second path and the antenna.