Local area network dual-channel device discovery method

Abstract

The invention relates to a local area network dual-channel device discovery method. In order to solve a technical problem of a device discovery technology purely based on Alljoyn, the local area network dual-channel device discovery method is provided. The method comprises the following steps: a server side device or a client side device starts device discovery through a broadcast or multicast mode; the device discovery is simultaneously transmitted through a first channel and the second channel through the broadcast or multicast mode, a first channel underlying layer uses an Alljoyn protocol,and a second channel underlying layer uses a UDP discovery protocol; the target device selects the first channel and / or the second channel to receive information according to a protocol type supported by the target device, and sends a connection establishment request; according to the connection establishment request, the server side device or the client side device establishes a connection withthe target discovery device. Such design can guarantee high discovery success rate of a local area network device, and is compatible to a strong terminal and a weak terminal.

Description

technical field [0001] The invention belongs to the technical field of device discovery in the communication field, and more specifically relates to a dual-channel device discovery method for a local area network. Background technique [0002] Under the development trend of the Internet of Everything, network discovery devices are used in more and more scenarios. AllJoyn, developed by the open source project of the Qualcomm Innovation Center led by Qualcomm, is a cooperative open source software framework. Programmers can easily write applications that search for nearby devices, regardless of the other party's brand, category, The systems can all be connected without the need for a cloud environment. The AllJoyn framework is very flexible and enables the vision of IoT to be realized. The AllJoyn framework handles the complexities of discovering nearby devices, establishing sessions between devices, and communicating securely between those devices. It abstracts away the de...

AI Technical Summary

Problems solved by technology

However, there are three main problems in the device discovery technology based solely on Alljoyn. One is that the success rate of device discovery is unstable, and the success rate is very low in some local area networks; It cannot be used normally on the device; Third, although Alljoyn provides a thin version, this version is not fully functional and needs to rely on other strong terminal versions on the LAN

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