Radio Communication Device Slave Unit Discovery Without Master Connection
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Solution Overview
Problem
In wireless LAN systems standardized by IEEE 802.11, slave units do not respond to probe requests from new radio communication devices, leading to increased time and load for searching and connecting with desired slave units, as existing methods require connection with a master unit to detect slave units.
Innovation Solution
A radio communication device can find and connect with a slave unit without establishing a connection with a master unit by sending probe requests and receiving probe responses directly from slave units, using beacon signals to determine frequency usage and sending probe request packets with information about its communication function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a radio communication device connects to a master unit to detect slave units, then the slave unit can be found through the master unit, but the time and load for searching and connecting with desired slave units increases
Solution Approach 1:
The invention extracts the probe response sending function from the master unit and assigns it to the slave unit itself. Slave units independently send probe responses when receiving probe requests, eliminating the need for master unit involvement in the detection process and reducing search time.
Solution Approach 2:
Slave units perform self-detection by automatically sending probe responses when receiving probe requests from new radio communication devices. This self-service mechanism allows slave units to be discovered without requiring master unit mediation, thereby reducing the time and load for finding desired slave units.
2Reliability
If a radio communication device connects to a master unit to detect slave units, then the slave unit can be found through the master unit, but the load of the radio communication device increases
Solution Approach 1:
The invention extracts the detection function from the master unit and distributes it to individual slave units. Each slave unit independently handles probe requests and sends probe responses, reducing the processing load on the radio communication device compared to going through master unit connections.
Solution Approach 2:
Slave units independently handle detection operations by sending probe responses when receiving probe requests. This self-service approach eliminates the need for master unit mediation, reducing the overall system load and simplifying the detection process for radio communication devices.
3Adaptability or versatility
If a radio communication device connects to multiple master units to search for desired slave unit, then the desired slave unit can be found, but the time necessary for searching increases
Solution Approach 1:
The invention extracts the probe response function from master units and assigns it to slave units. This allows direct detection of slave units across different master units without requiring connections to multiple master units, reducing search time while maintaining the ability to find desired slave units.
Solution Approach 2:
The invention introduces probe responses as intermediary signals sent directly by slave units to radio communication devices. These probe responses act as mediators that enable direct discovery of slave units without requiring intermediate master unit connections, thereby reducing search time.
Data Source
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AI summary
Provided is a radio communication system including a first radio communication device, and a second radio communication device that communicates with a radio communication device operating as a master unit and being connected, wherein the second radio communication device includes a communication unit that communicates with the radio communication device being connected, and a control unit that controls the communication unit to send a response packet to the first radio communication device when a response request packet broadcasted from the first radio communication device is received by the communication unit.