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A method, device and system for establishing a data channel

A technology of data channel and communication system, applied in the field of establishing data channel, can solve the problem of inability to distinguish the delay of data message communication

Active Publication Date: 2018-06-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Embodiments of the present invention provide a method, device, and system for establishing a data channel, which are used to solve the problem of inability to distinguish data messages transmitted through different data channels caused by channel number conflicts in the prior art, and to solve the problem of channel number conflicts in the prior art. The communication delay problem caused by reselecting the channel number to establish the data channel at the time

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  • A method, device and system for establishing a data channel
  • A method, device and system for establishing a data channel
  • A method, device and system for establishing a data channel

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0046] In the prior art, the channel number carried in the DATA_CHANNEL_OPEN message is randomly selected by the communication device sending the message. Therefore, if both communication parties send DATA_CHANNEL_OPEN messages to each other at the same time, the DATA_CHANNEL_OPEN messages sent by both parties may carry the same channel number. For example, both communication parties send a DATA_CHANNEL_OPEN message containing channel number 111 to the ...

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Abstract

The embodiment of the invention discloses a method, device and system for establishing a data channel. The method includes: the first communication device negotiates with the second communication device to determine that the first communication device uses the channel numbers in the first channel number set to establish a data channel, and the second communication device uses the channel in the second channel number set number to establish a data channel, the first channel number set and the second channel number set have no intersection, which can ensure that the channel number of the data channel established by one party does not conflict with the channel number of the data channel established by the other party, thus It solves the problem of inability to distinguish data packets transmitted through different data channels caused by the channel number conflict in the prior art, and also avoids the communication delay problem caused by reselecting the channel number to establish a data channel when the channel number conflicts .

Description

technical field [0001] Embodiments of the present invention relate to the communication field, and more specifically, relate to a method, device and system for establishing a data channel. Background technique [0002] Web Real Time Communication (WebRTC) is a real-time data communication technology based on WEB. The channel through which the communication parties use the WebRTC data channel protocol (data channel protocol) to transmit data is called a data channel. [0003] The datachannel is carried on an SCTP (Stream Control Transmission Protocol, Stream Control Transmission Protocol) connection, and one SCTP connection is allowed to carry 65535 datachannels. [0004] In the specific communication process, after the SCTP connection is established between the communication parties, any one of them can send a DATA_CHANNEL_OPEN (open data channel) message including a randomly selected channel number to the other party when it needs to communicate with the other party to esta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08
CPCH04W72/02H04W84/18
Inventor 陈鑫
Owner HUAWEI TECH CO LTD