MIMO WLAN Device Mode Segmentation for Legacy Compatibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless local area networks (WLANs) face a challenge in achieving high data throughput while maintaining backward compatibility with legacy devices, as most WLANs include legacy devices compliant with older wireless communication standards.
Innovation Solution
The development of a WLAN device capable of MIMO (Multiple-Input Multiple-Output) wireless communications, which includes a baseband processing module that produces multiple outbound symbol streams and uses spatial and time encoding to enhance data throughput, while also being backward compatible with legacy devices through specific mode selection signals and encoding schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MIMO wireless communications are implemented to achieve high data throughput, then data transmission rate is improved, but device complexity and compatibility requirements worsen
Solution Approach 1:
The patent segments the wireless communication system into distinct operational modes (SISO, SIMO, MISO, MIMO) that can be selectively activated. The baseband processing module divides data streams and the transmitter divides antenna usage based on the selected mode, allowing complex MIMO functionality to be broken down into manageable segments that can be activated only when needed, thus reducing overall system complexity while maintaining high throughput capability.
Solution Approach 2:
The patent implements dynamic mode selection where the wireless communication device can switch between different operational modes (SISO, SIMO, MISO, MIMO) based on channel conditions, device capabilities, and performance requirements. This dynamic adaptability allows the system to optimize data throughput by using MIMO when conditions permit while falling back to simpler modes when compatibility or channel conditions require it, thereby managing device complexity dynamically.
2Productivity
If MIMO communications are used to enhance data throughput, then transmission capacity is improved, but compatibility with legacy devices deteriorates
Solution Approach 1:
The patent designs the wireless communication device with multi-functionality, enabling it to operate in multiple modes (SISO, SIMO, MISO, MIMO) within a single unified architecture. The baseband processing module and transmitter are designed to support both legacy single-antenna operations and advanced MIMO operations, allowing the device to universally communicate with various device types including legacy devices while maintaining the capability for high-throughput MIMO communications when appropriate.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Frequency selective transmission within single user, multiple user, multiple access, and/or MIMO wireless communications. Adaptation among different respective sub-channels and/or channels is effectuated within a wireless communication system. Such a wireless communication system may include an access point (AP) and one or more wireless stations (STAs). The respective channelization employed for various communications between the devices within such a wireless communication system may be adapted based upon any of a number of considerations. For example, a receiver communication device may indicate to a transmitter communication device one or more preferred sub-channels and/or channels on which subsequent communications are to be performed. Alternatively, a transmitter communication device may employ such information provided from one or more receiver communication devices as one of multiple respective considerations regarding which one or more sub-channels and/or channels on which subsequent communications are to be performed.