Neighbor Awareness Networking Probe Beacon Discovery
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Solution Overview
Problem
Existing wireless communication systems, particularly Wi-Fi networks based on the IEEE 802.11 standard, face challenges in the setup and coordination of direct communication between mobile stations, leading to inefficiencies in service discovery and setup processes.
Innovation Solution
Implementing a method where wireless stations can configure direct communication with neighboring stations without an intermediate access point, using aggressive probing and extended scanning on discovery channels to accelerate service discovery, including broadcasting probe beacons and scanning for responses within extended time periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If wireless stations use traditional service discovery methods through access points, then network coordination is maintained, but service discovery speed and efficiency are reduced
Solution Approach 1:
The patent extracts the service discovery function from the access point-mediated process and enables direct peer-to-peer discovery between wireless stations. Stations broadcast probe beacons and scan for responses independently, removing the access point as an intermediate coordinator for discovery operations, thus improving speed while maintaining simplicity through standardized protocols
Solution Approach 2:
The patent introduces structured discovery protocols including probe beacon frames, scan request/response mechanisms, and availability window negotiations as intermediary communication frameworks. These standardized intermediaries enable direct station-to-station discovery without access point mediation, resolving the contradiction by providing coordination rules rather than coordination infrastructure
2Reliability
If wireless stations perform extended scanning for service discovery, then discovery completeness is improved, but time consumption increases
Solution Approach 1:
The patent implements preliminary action by having stations broadcast probe beacons proactively and maintain availability windows before actual service requests are made. Stations pre-scan discovery channels and cache service information, so when a service is needed, the discovery process is already partially complete, improving reliability without proportional time increase
Solution Approach 2:
The patent employs periodic action through scheduled discovery windows and recurring scan intervals. Stations perform scans at defined periodic intervals rather than continuously, and services advertise availability in periodic windows. This ensures comprehensive discovery coverage over time while limiting any single discovery operation's time consumption to predefined intervals
Data Source
AI summary
In some embodiments, one or more wireless stations operate to configure direct communication with neighboring mobile stations, e.g., direct communication between the wireless stations without utilizing an intermediate access point. Embodiments of the disclosure relate to accelerated service discovery between peer devices. In some embodiments, a wireless device may broadcast a probe beacon on one or more discovery channels. The wireless device may then scan the discovery channels for an extended period of time. The wireless device may receive a response from a peer device and transmit further service information to the peer device in an availability window indicated in the response.