Bluetooth LE to Wi-Fi Direct Connection Setup
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Solution Overview
Problem
Existing Bluetooth technologies face challenges in efficiently connecting multiple wireless communication means, particularly in reducing power consumption and simplifying the connection procedure, especially when transitioning between Bluetooth Low Energy (LE) and Wi-Fi Direct connections.
Innovation Solution
A method and apparatus that utilize Bluetooth Low Energy (LE) technology to discover and establish Wi-Fi Direct connections by transmitting and receiving specific messages, including ID, location, and service information, to streamline the connection process and reduce power consumption by activating only necessary communication means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If Bluetooth Low Energy (LE) is used for device discovery and connection establishment, then power consumption is reduced and connection procedure is simplified, but transmission distance is limited to 100m maximum
Solution Approach 1:
The patent uses Bluetooth LE as an intermediary communication channel to exchange connection information (SSID, password, IP address) that enables subsequent Wi-Fi Direct connections. The Bluetooth LE acts as a mediator that facilitates the establishment of long-distance Wi-Fi connections while maintaining low power consumption during the discovery and information exchange phase.
2Speed
If multiple wireless communication means are maintained active for connection establishment, then connection speed is improved, but power consumption increases
Solution Approach 1:
The patent performs preliminary actions by using Bluetooth LE to discover devices and exchange connection information before activating other communication means. This preliminary information exchange enables faster subsequent connections while avoiding the need to keep multiple communication interfaces continuously active, thus reducing power consumption.
Solution Approach 2:
The system dynamically switches between different communication modes based on operational needs. Bluetooth LE is activated for discovery and information exchange, then the system transitions to Wi-Fi Direct for data transmission. This dynamic activation and deactivation of communication interfaces optimizes both connection speed and power consumption.
3Length of moving object
If Bluetooth Classic (BR/EDR) is used for communication, then transmission distance and data rate are improved, but power consumption increases compared to Bluetooth LE
Solution Approach 1:
The patent segments the communication process into two distinct phases: discovery and information exchange using low-power Bluetooth LE, and actual data transmission using higher-performance Wi-Fi Direct. This segmentation allows the system to use the most energy-efficient communication method for each specific task, avoiding the need to use power-consuming Bluetooth Classic for all communication needs.
Data Source
AI summary
The present invention relates to a method and an apparatus for establishing a Wi-Fi Direct connection through Bluetooth low energy (LE) technology. According to the present invention, provided are a method including: receiving an advertising message including information associated with Wi-Fi Direct from a second device; transmitting a request message for requesting detailed information of the Wi-Fi Direct to the second device based on the advertising message; receiving a response message including the detailed information in response to the request message; and establishing the Wi-Fi Direct connection with the second device, wherein the advertising message is transmitted through a specific channel for a Bluetooth low energy (LE) connection and the information includes at least one of ID information indicating the Wi-Fi Direct, location information of the detailed information, or available information of an alternative communication means, and an apparatus thereof.