Shared-Antenna Communication Scheduling for Bluetooth-WLAN Interference
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Solution Overview
Problem
Existing communication systems face challenges in managing signal transmission interference between Bluetooth and wireless local area network technologies within the same device, particularly in allocating sufficient operation time for both to function effectively.
Innovation Solution
A communication system and method that utilizes a control circuit to manage antenna usage between a first and second wireless communication circuit through a switch circuit, employing priority sequences to divide transmission and reception periods into interleaved scheduling periods, ensuring efficient sharing of the antenna by both circuits based on their operational states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single antenna is shared by both Bluetooth and wireless local area network circuits, then device integration is improved, but signal transmission interference increases
Solution Approach 1:
The transmission and reception period is divided into multiple scheduling periods, with each period allocated to specific communication circuits. The switch circuit selectively connects the antenna to different circuits based on the current scheduling period, preventing signal interference while maintaining antenna sharing.
Solution Approach 2:
The system dynamically switches the antenna connection based on real-time operational requirements of different communication circuits. The control circuit adjusts the switch circuit's connection state according to priority sequences and scheduling periods, enabling adaptive resource allocation.
2Productivity
If priority sequences are used to manage antenna access, then transmission efficiency is improved, but system complexity increases
Solution Approach 1:
Priority sequences are pre-configured for different communication circuits before operation begins. The control circuit uses these pre-established sequences to automatically determine access rights during scheduling periods, eliminating the need for real-time complex arbitration.
Solution Approach 2:
The control circuit acts as an intermediary between the switch circuit and the communication circuits. It manages the priority sequences and scheduling logic, simplifying the overall system architecture by centralizing control functions.
Data Source
AI summary
A communication system includes an antenna, a first wireless communication circuit, a second wireless communication circuit, a switching circuit, and a control circuit. During a second mode, a transmission and reception period of the antenna is divided by the control circuit into a plurality of first scheduling periods and a plurality of second scheduling periods interleaved with the first scheduling periods. The control circuit controls the switching circuit to select the first path or the second path to connect the antenna to the first wireless communication circuit or the second wireless communication circuit, according to a second priority sequence and a third priority sequence during the first scheduling periods and the second scheduling periods, respectively. The second priority sequence is different from the third priority sequence.