Protocol Conversion for Wireless Interoperability
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Solution Overview
Problem
Current wireless communication systems face challenges in enabling seamless communication between devices operating on different protocols within a wireless local area network, particularly in avoiding collisions and facilitating communication between newer and legacy devices.
Innovation Solution
A method that determines the protocol differences between source and target stations, and through an access point, converts and transmits frames accordingly, ensuring compatibility and effective communication by formatting frames in accordance with the target stations' protocols, whether in direct or indirect wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If backward compatibility is enabled exclusively at the PHY layer or MAC layer using legacy frames, then legacy devices can avoid collisions, but newer devices cannot communicate directly with legacy devices
Solution Approach 1:
The patent introduces a protocol conversion mechanism that acts as an intermediary between newer devices (using 802.11n or later protocols) and legacy devices (using 802.11a/b/g protocols). The system converts frames from the newer protocol format to legacy protocol format, enabling communication between devices of different protocol generations without requiring both devices to support the same protocol version.
Solution Approach 2:
The patent changes the protocol parameters by converting frame formats between different IEEE 802.11 standards. The system transforms frame structures, modulation schemes, and transmission parameters to match the capabilities of legacy devices while maintaining the functionality intended for newer devices, thus bridging the protocol gap.
2Adaptability or versatility
If multiple protocol conversions are performed through an access point, then interoperability between different protocol devices is enabled, but system complexity increases
Solution Approach 1:
The access point is designed with universal protocol conversion capabilities that can handle multiple IEEE 802.11 protocol versions (802.11n, 802.11ac, 802.11ax, etc.) converting to legacy formats. This multi-functional approach consolidates what would otherwise require separate conversion mechanisms for each protocol pair, reducing overall system complexity while maintaining broad interoperability.
3Reliability
If legacy devices use legacy frames for collision avoidance, then they can detect channel usage, but they cannot fully demodulate and decode transmitted frames
Solution Approach 1:
The patent segments the frame structure into parts that legacy devices can process (preamble and header information for collision avoidance) and parts that contain the actual data payload. By converting the entire frame to legacy protocol format, the system ensures that legacy devices can not only detect channel usage but also fully demodulate and decode the transmitted data without information loss.
Data Source
AI summary
A method for wireless communication between stations of differing protocols begins by determining whether protocols of target stations of a wireless communication are different than a protocol of a source station. The method continues by, when at least one of the target stations has a different protocol than the protocol of the source station, determining whether the wireless communication is a direct wireless communication or an indirect wireless communication. The method continues with the source station transmitting a frame to an access point, wherein the frame is formatted in accordance with the protocol of the source station, when the wireless communication is the indirect wireless communication. The method continues with the access point converting the frame into at least one alternate frame based on the protocol of the at least one of the target stations having the different protocol. The method continues with the access point transmitting the at least one alternate frame to the at least one of the target stations.