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Method for forwarding RTCP SR message, method, apparatus and system for measuring QoS

A forwarding method and packet sending technology, applied in the network field, can solve the problems of inability to measure QoS, increase network burden, and inability to calculate QoS parameters of adjacent measurement points, etc.

Inactive Publication Date: 2010-08-18
江苏华荣投资发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0021] After careful analysis and research, the inventor found that in the passive measurement method, the measurement point can only calculate the QoS parameters between the two ends and the local area, and cannot calculate the QoS parameters between the adjacent measurement point and the local area. Therefore, passive measurement The method cannot do the measurement based on the network segment
[0022] Therefore, the current method of measuring QoS either increases the burden on the network, or cannot measure QoS based on the network segment

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  • Method for forwarding RTCP SR message, method, apparatus and system for measuring QoS
  • Method for forwarding RTCP SR message, method, apparatus and system for measuring QoS
  • Method for forwarding RTCP SR message, method, apparatus and system for measuring QoS

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Embodiment Construction

[0039] The best embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] First, with reference to FIG. 3 , an embodiment of the method for forwarding the RTCP SR message of the present invention will be described. As shown in Figure 3, including:

[0041] Step S301: Receive the RTCP SR message, and calculate the QoS parameters of the RTP data flow between the sender of the message and the local.

[0042] The format of the RTCP SR message is shown in Figure 4, where V represents the version, P represents whether the padding position is valid, RC represents the number of received reports, PT represents the type of packet, SR represents the report of the sender, and Length represents the length of the message. length. The RTCP SR message contains four parts, which are 8-byte header, 20-byte sending information, and multiple receipt report blocks (Receipt ReportBlock) in units of 24 bytes. If necessary, there can...

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Abstract

The invention provides a transmitting method of RTCP SR messages, which comprises the steps of: receiving the RTCP SR messages and calculating the QoS parameters of corresponding RTP data streams between the message transmitting party and the local site; generating new RTCP SR messages according to the RTCP SR messages and the calculated QoS parameters; and providing the new RTCP SR messages to the adjacent downstream measuring points to lead the downstream measuring points to measure the QoS on the basis of network segments. The invention also provides a transmitting device of the RTCP SR messages, a QoS measuring method and device based on RTP / RTCP, and a transmitting system of RTP / RTCP messages. In the invention, the QoS parameters of the RTP data streams between two measuring points can still be calculated without the feedback of the adjacent downstream measuring points. Therefore, the QoS measurement based on the network segments can be realized under the situation that the network burden is not increased excessively.

Description

technical field [0001] The present invention relates to network technology, in particular to the technology of measuring service quality (QoS, Quality of Service) based on real-time protocol (RTP, Real Time Protocol) / real-time control protocol (RTCP, Real Time Control Protocol). Background technique [0002] With the increase of service requirements and the development of Internet Protocol (IP, Internet Protocol) network technology, more and more real-time services are transmitted on the IP network. The addition of real-time services such as voice, video, multimedia, and teleconferencing poses new challenges to IP networks. How to ensure the quality of real-time services is currently a hot issue. RTP is an end-to-end transmission protocol used to transmit real-time service data. It provides information such as serial numbers and time stamps for packet reassembly at the sink. However, RTP itself does not provide QoS guarantees and real-time transmission guarantees for real-t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/26H04L12/851
Inventor 刘颖
Owner 江苏华荣投资发展有限公司