Wireless Gateway RSSI Algorithm Matching for Accurate Roaming
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Solution Overview
Problem
Existing wireless local area networks face issues with inaccurate Received Signal Strength Indication (RSSI) calculations due to poor compatibility between gateway devices and stations from different manufacturers, leading to inappropriate Access Point (AP) switching during roaming, resulting in poor user experience.
Innovation Solution
A signal strength measurement method that involves acquiring a station identification field, searching for an associated signal strength algorithm, and if none is found, matching a first RSSI and Received Channel Power Indication (RCPI) to determine a suitable signal strength algorithm from preset algorithms, associating it with the identification field for accurate RSSI calculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single RSSI algorithm is used for all STAs, then the device complexity is reduced, but the measurement precision of RSSI deteriorates due to manufacturer-specific algorithm differences
Solution Approach 1:
The patent segments the unified RSSI measurement process into multiple manufacturer-specific algorithm implementations. Each STA type (identified by OUI in the MAC address) is assigned a dedicated algorithm from a plurality of preset algorithms, allowing precise measurement for each device type while maintaining a structured system framework.
Solution Approach 2:
The patent changes the algorithm selection parameter based on the STA's identification information. By extracting the OUI from the STA's MAC address, the system dynamically selects the appropriate RSSI calculation algorithm, transforming a static single-algorithm approach into a dynamic multi-algorithm selection mechanism that adapts to different device manufacturers.
2Adaptability or versatility
If multiple manufacturer-specific signal strength algorithms are supported, then the adaptability to different STAs is improved, but the device complexity increases
Solution Approach 1:
The patent implements a universal RSSI measurement framework that can handle multiple STA types through a single gateway device. The system maintains a plurality of preset signal strength algorithms and selects the appropriate one based on the STA's OUI, enabling one device to serve multiple manufacturer-specific requirements without requiring separate hardware for each STA type.
Solution Approach 2:
The patent introduces an intermediary mechanism (the OUI extraction and algorithm matching module) that mediates between the diverse STA types and the RSSI measurement system. This intermediary layer translates the STA's manufacturer-specific characteristics into the appropriate algorithm selection, isolating the complexity of multiple algorithms from the overall system architecture.
3Ease of operation
If the gateway device calculates RSSI using a unified algorithm, then the ease of operation is improved, but the reliability of AP selection deteriorates due to inaccurate RSSI measurements
Solution Approach 1:
The patent performs preliminary action by pre-setting multiple signal strength algorithms corresponding to different STA types before the actual RSSI measurement. The gateway device extracts the STA's OUI in advance and pre-selects the appropriate algorithm from the preset collection, ensuring accurate RSSI calculation is ready before the STA makes roaming decisions, thus maintaining both simplicity and reliability.
Data Source
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AI summary
A signal strength measurement method, a wireless gateway device and a readable storage medium The signal strength measurement method comprises: acquiring a station(STA ) identification field of an STA that accesses an access point (A P); searching for a signal strength algorithm associated with the STA identification field; if an associated signal strength algorithm is not found, considering that the STA accesses the AP for the first time; at this time, traversing and calculating a plurality of preset signal strength algorithms to match a signal strength algorithm applicable to the STA that performs access for the first time; and associating a matched first signal strength algorithm with the STA, so that the first signal strength algorithm can be directly called to calculate an RSSI of the STA during a roaming process of the STA in the current wireless local area network.