Wireless Handheld Device Discovery via Intermediate Bridge
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Solution Overview
Problem
Conventional wireless connectivity standards for handheld devices, such as Bluetooth, face limitations in data transfer speed, power consumption, and range, requiring device pairing and being restricted to a short distance, which hinders efficient communication of audio and video data.
Innovation Solution
A system and method for discovering communication devices that allow handheld devices to establish a communication link without pairing, using an intermediate device with bridging, routing, or switching functions, and maintaining a list of authorized devices for secure communication over extended ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Bluetooth pairing is required for communication, then device security is improved, but device complexity and connection time increase
Solution Approach 1:
The system performs preliminary actions by pre-establishing trust relationships through QR code exchange and backend verification before actual communication is needed. The authorized device list is pre-populated with cryptographic credentials, so when devices come into proximity, the pairing process is already complete and authentication can occur instantly without manual pairing steps.
Solution Approach 2:
A backend server acts as an intermediary that facilitates the pairing process by verifying device identities through cryptographic challenges and populating authorized device lists. This intermediary handles the complex security verification off-device, allowing the actual communication devices to skip manual pairing while maintaining security through the pre-established trust relationship.
2Ease of operation
If Bluetooth is used for wireless communication, then portability is improved, but data transfer speed deteriorates
Solution Approach 1:
The system implements multi-functionality by enabling devices to operate in multiple communication modes: Bluetooth for device discovery and initial connection establishment, and Wi-Fi for high-speed data transfer. The communication manager automatically selects the appropriate protocol based on the communication requirements, allowing the system to leverage both protocols' strengths for different functions in the communication process.
3Use of energy by moving object
If Bluetooth power consumption is used, then battery life is improved, but communication range deteriorates
Solution Approach 1:
The communication process is segmented into distinct phases with different power requirements: device discovery and initial handshaking are performed using low-power Bluetooth, while actual high-bandwidth communication occurs over Wi-Fi when devices are connected. This segmentation allows the system to use Bluetooth only when necessary for connection establishment, minimizing overall power consumption while enabling longer effective communication ranges through the Wi-Fi network infrastructure.
Data Source
AI summary
Methods and systems for communicating information within a network are disclosed. The method may include receiving at a first wireless handheld communication device (WHCD), a communication signal from an intermediate communication device comprising at least one identifier (ID) of at least a second WHCD authorized to communicate with the intermediate communication device. The first WHCD may maintain a list of identifiers for authorized devices that are allowed to communicate with the first WHCD. The first WHCD need not be paired with any device that is specified by the list of identifiers for authorized devices maintained by the first WHCD. A communication link may be established between the first WHCD and the second WHCD via the intermediate communication device, if the list of identifiers for authorized devices maintained by the first WHCD comprises the ID of the second WHCD.