MIMO SISO Mode Switching for Wireless Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems with collocated interfaces, such as WLAN and Bluetooth, mutual interference occurs due to shared radio frequency (RF) chains and antennas, leading to reduced throughput and increased packet loss during MIMO operations, which can result in suboptimal performance and increased power consumption.
Innovation Solution
The communication device is configured to selectively switch between MIMO and SISO operations based on performance metrics, using spatial multiplexing powersave (SMPS) to determine the optimal mode by analyzing wireless characteristics and statistics, and signaling peers to adjust operation modes to MIMO or SISO, thereby improving radio link performance and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MIMO operation mode is used to improve throughput, then data transmission rate is improved, but mutual interference between collocated interfaces increases
Solution Approach 1:
The system dynamically switches between MIMO and SISO operation modes based on real-time performance metrics and interference conditions. The controller monitors communication quality and automatically adjusts the operation mode, making the system adaptive to changing environmental conditions rather than being fixed in one mode.
Solution Approach 2:
The invention changes the operational parameters of the communication device by switching between different operation modes (MIMO and SISO). This parameter change allows the system to optimize performance under different conditions, reducing interference when necessary while maintaining high throughput when possible.
2Productivity
If MIMO operation mode is used to improve communication performance, then data rate is improved, but packet loss increases due to interference
Solution Approach 1:
The controller continuously monitors communication performance metrics including packet loss and interference levels. Based on this feedback, the system automatically switches between MIMO and SISO modes to maintain optimal performance and reliability, reducing packet loss when interference is detected.
3Productivity
If MIMO operation mode is used to enhance communication capability, then spectral efficiency is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts its operation mode based on performance requirements and power conditions. By switching between MIMO (higher power, higher efficiency) and SISO (lower power, lower efficiency) modes, the system optimizes the balance between spectral efficiency and power consumption in real-time.
4Device complexity
If collocated interfaces share RF chains and antennas to reduce device complexity, then device structure is simplified, but interference between interfaces occurs
Solution Approach 1:
The invention extracts and separates the operation modes for different interfaces by implementing mode switching that isolates interfering interfaces. When interference is detected, the system switches to SISO mode for the affected interface, effectively separating the operational paths to eliminate interference while maintaining the physical collocation of components.
Data Source
AI summary
A communication device configured to operate in a Multiple-input Multiple-output (MIMO) operation mode and Single-input Single output (SISO) operation mode and operation mode switching method are described. The communication device can include a transceiver associated with a first antenna, and configured to wirelessly communicate via the first antenna using a first communication technology; a second antenna associated with a second communication technology different from the first communication technology; and a controller coupled to the transceiver. The controller can be configured to: determine communication information corresponding to the first and the second communication technologies; and control the communication device to switch an operation mode of the communication device between the MIMO operation mode and the SISO operation mode based on the determined communication information.