Bluetooth-Assisted Wi-Fi Direct Connection Setup
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Solution Overview
Problem
The existing Miracast technology experiences inefficiencies and potential connection failures due to the time-consuming device discovery and service discovery phases, which involve random switching in time and frequency, leading to prolonged connection times and increased failure probabilities.
Innovation Solution
The proposed method employs Bluetooth advertising messages to facilitate WIFI direct connections by including channel pointers and WIFI direct addresses, allowing devices to establish connections without random switching, thereby streamlining the discovery process and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If random switching in time and frequency is used for device discovery and service discovery, then devices can establish WIFI direct connections, but the connection time is prolonged and failure probability increases
Solution Approach 1:
The patent applies preliminary action by pre-establishing Bluetooth connections and obtaining WIFI direct addresses before the WIFI direct connection process. Devices exchange WIFI direct addresses and channel information through Bluetooth advertising packets in advance, so that when the WIFI direct connection is initiated, both devices already have the necessary connection parameters ready, eliminating the need for time-consuming random switching and discovery phases.
2Adaptability or versatility
If random switching in time and frequency is used for device discovery, then devices can find each other, but the discovery process is time-consuming
Solution Approach 1:
The patent uses Bluetooth as an intermediary to facilitate the connection process. Instead of devices performing random switching to discover each other directly over WIFI, they first use Bluetooth (which operates on different frequency and has different discovery mechanisms) to exchange connection information, including WIFI direct addresses and channel pointers. This intermediary step enables efficient connection setup without requiring time-consuming random switching for device discovery.
Data Source
AI summary
Provided are a wireless connection method and device, where the method includes: receiving, by a second device, a first Bluetooth advertising message from a first device, where the first Bluetooth advertising message includes a first channel pointer; receiving a second Bluetooth advertising message from the first device on a channel indicated by the first channel pointer, where the second Bluetooth advertising message includes a WIFI direct address of the first device; sending a first Bluetooth message to the first device, where the first Bluetooth message includes a WIFI direct address of the second device; and performing a WIFI direct connection operation according to the WIFI direct address of the first device and the WIFI direct address of the second device. The method and device provided in the embodiments of the present application can shorten the time required for WIFI direct connection and improve the direct connection efficiency.