Unified Bluetooth-Wi-Fi Advertisement Packets for Faster Discovery
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Solution Overview
Problem
Existing information handling systems with multiple radios require sequential device discovery across different interfaces, leading to inefficient power consumption and slower discovery processes due to radio switching and filter settling times.
Innovation Solution
Implementing a common advertisement packet that can be discovered by both Bluetooth and Wi-Fi scanners, allowing for simultaneous use of both interfaces without changing existing standards, and enabling faster, lower-power discovery through antenna diversity and context-aware switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sequential device discovery is performed across multiple radio interfaces, then device compatibility and service availability are improved, but discovery time and power consumption increase
Solution Approach 1:
The patent merges Bluetooth and Wi-Fi advertisement packet formats into a unified structure that both radio types can scan simultaneously. The common advertisement packet contains service information that can be interpreted by both Bluetooth and Wi-Fi scanners, eliminating the need for sequential scanning and reducing discovery time while maintaining compatibility across different radio interfaces.
Solution Approach 2:
The advertisement packet is designed with universal structure and fields that serve multiple purposes: it works for both Bluetooth Low Energy and Wi-Fi scanning operations, identifies services available on either radio type, and provides contextual information for both discovery protocols. This multi-functionality allows a single packet format to replace previously separate Bluetooth and Wi-Fi advertisement mechanisms.
2Adaptability or versatility
If sequential device discovery is performed across multiple radio interfaces, then comprehensive service coverage is improved, but power consumption increases
Solution Approach 1:
By combining Bluetooth and Wi-Fi scanning operations into a simultaneous process using a common advertisement packet, the system avoids the power-wasting sequential activation of radios. Both radio interfaces can remain in low-power scan modes concurrently, sharing the discovery workload and reducing total energy consumption compared to sequentially activating each radio with full-power scanning.
Solution Approach 2:
The system employs periodic advertisement scanning with optimized intervals, where both Bluetooth and Wi-Fi radios perform scans at coordinated times rather than continuously or sequentially with full power. This periodic approach maintains service coverage while significantly reducing average power consumption compared to continuous sequential scanning.
3Adaptability or versatility
If radio switching is performed during device discovery, then interface flexibility is improved, but discovery speed decreases due to filter settling times
Solution Approach 1:
The patent combines Bluetooth and Wi-Fi advertisement scanning into a unified simultaneous operation using a common packet format. This eliminates radio switching entirely, as both interfaces scan the same unified advertisement space at the same time, removing filter settling delays and maintaining interface flexibility through the multi-radio architecture.
Solution Approach 2:
The system performs preliminary setup of both radio interfaces in advance, configuring them to scan the common advertisement packet format before actual device discovery begins. This preliminary configuration ensures both radios are ready to operate simultaneously without requiring switching during the discovery process, eliminating settling times and accelerating discovery speed.
Data Source
AI summary
Embodiments are directed to devices that use a common advertisement packet that can be discovered by both Bluetooth and Wi-Fi type scanners. In one configuration, a device comprises a first radio associated with a first wireless interface, and a second radio associated with a second wireless interface. At least one processor is coupled to the first radio and the second radio. The at least one processor is configured to cause the device to scan the first wireless interface for advertisement messages, and receive an advertisement message from a remote station. The advertisement message comprises information identifying a service available via the second radio and identifying a social channel on the second wireless interface to establish the service.