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Single broadcast to multicast switching method

A multicast and unicast technology, applied in the field of communication, can solve the problems of large network traffic, reduce the requirements of processing capacity and connection bandwidth, etc., achieve the effect of reducing the requirements of processing capacity and connection bandwidth, and solve the problem of large amount of network traffic

Inactive Publication Date: 2008-03-12
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention can solve the problem of a large amount of network traffic caused by a large number of transmissions of the same video stream in the existing network; at the same time, it also reduces the requirements on the processing capacity and connection bandwidth of the server side of the video monitoring system

Method used

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  • Single broadcast to multicast switching method
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  • Single broadcast to multicast switching method

Examples

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Embodiment Construction

[0035] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Fig. 3 is a flowchart of a method for switching from unicast to multicast according to the present invention. Among them, the multicast function should be supported in the bearer network, users, and server-side applications. As shown in Figure 3, the method for switching from unicast to multicast according to the present invention comprises the following steps:

[0037] Step S302, the server-side main program implements the sending of data streams (monitoring streams), continuously monitors the access status of the data streams, and determines the number of users who send access requests to the same monitoring stream.

[0038] Step S304, when it is determined that the number of users is not greater than the predetermined number, the server sends the data stream to the users in unicast mode, and when it is determined that t...

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Abstract

The present invention proposes a method for switching unicast to multicast. The method comprises the following steps: step S302, a server receives the access request to the data flow sent by one or a plurality of users, and determines the number of the users which sends the access request to the same data flow; step S304, on the condition that the number of the users is ensured not larger than the expected number, the server sends the data flow to the user in a unicast way, and on the condition that the number of the users is ensured to be larger than the expected number, the server sends the data flow to the user in the unicast and multicast way at the same time; step S306, the user synchronizes the data flow received in the unicast way and the data flow received in the multicast way, and sends the message received and identified by the multicast to the server; and step S308, the server stops sending the data flow to the user in the unicast way after receiving multicast identified message, and only sends the data flow to the user in the multicast way.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for switching from unicast to multicast. Background technique [0002] Figure 1 shows a web-based real-time network monitoring application system. [0003] The cameras C1, C2, . In MC, surveillance images are converted into video streams through servers S1, S2, Sm, etc., so that they can be browsed and accessed by users U1, U2, ..., Un112, etc. who access through AN2110. [0004] Corresponding to a specific application, such as a kindergarten monitoring system, cameras can be set up in lounges, classrooms, restaurants, and playgrounds. These cameras can be directly connected to the local monitoring center (or connected to the public monitoring center through the operator network ) to monitor and convert the relevant monitoring information into a streaming form and store it on the server, so that parents can monitor their children's life, study, and rest on the Internet in rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04N7/18H04L12/16H04L45/16
Inventor 顾忠禹
Owner ZTE CORP
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