Local area network dual-channel device discovery method

A device discovery and dual-channel technology, applied in wireless communication, network data management, data exchange network, etc., can solve the problems of Alljoyn occupying a lot of resources, unstable device success rate, and failure to use normally, and achieve streamlined logic processing and conversation Management mechanism, low resource occupation, and guaranteed discovery capabilities

Active Publication Date: 2019-02-19
SICHUAN CHANGHONG ELECTRIC CO LTD
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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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  • Local area network dual-channel device discovery method

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Embodiment Construction

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] Such as figure 1 as shown, figure 1 It specifically shows the dual-channel architecture diagram in the embodiment of the present invention. The bottom layer is composed of dual channels. The first channel uses the ALLjoyn protocol as the communication layer, the second channel uses the UDP protocol as the device discovery protocol, and the TCP protocol as the device communication channel. Specifically, the self-developed LAN communication module uses native UDP as the underlying discovery protocol. When the LAN server device accesses the network, it sends a multicast+broadcast message in the LAN to notify all client devices to complete the discovery; at the same time, the client device When accessing the network, it will also send a multicast+broadcast me...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L29/08H04W8/00
CPCH04L41/12H04L67/141H04W8/005
Inventor 陈梁陈勇洁杨海龙范英川
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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