Method for measuring multimedia multicast service quality based on client

Abstract

The invention discloses a method for measuring the multimedia multicast service quality based on a client under a large-scale IPv6 network environment. The method provides a whole set of schemes to solve the multimedia multicast service quality measurement, comprising the time synchronization of a closed system, the message sampling and time stamp adding of a multicast source end system, the selection of a dynamic measurement point, the measurement of multicast service quality parameters of a single measurement point, and the assessment and control of a multicast control server to the access network multimedia multicast service quality. The method not only can overcome the invasion and non-reliability of active measurement as well as the locality of passive measurement, but also can timelyand truly measure the multimedia multicast service quality, and has the advantages of convenient deployment, good expansibility and the like.

Description

technical field [0001] The invention relates to a method for measuring multimedia multicast service quality in a large-scale IPv6 (Internet Protocol Version 6) network environment, and belongs to the technical field of computer network technology applications. Background technique [0002] Multicast (Multicast) is a group communication model for multi-point transmission and multi-party cooperative applications. It has high data transmission efficiency. Multicast technology is an important supporting technology for next-generation Internet (Internet) applications. Because multicast can effectively save bandwidth and reduce network load, it is widely used in the growing multimedia services. [0003] Due to the real-time nature of multimedia data, the multimedia multicast service puts forward higher requirements on the service quality of the network. In order to ensure the service quality of the multimedia multicast service, it is necessary to measure the current multimedia mu...

AI Technical Summary

Problems solved by technology

The advantage of passive measurement is that it does not increase the network load and has no effect on the behavior of the network, but the disadvantage is that because passive measurement measures a single point, it is difficult to measure the end-to-end performance of the network, and it is easy to cause security problems

The advantage of active measurement is that the controllability of the measurement process is relatively high, and it is easy to measure end-to-end performance. The disadvantage is that its intrusion characteristics increase the network load. In addition, the results obtained by active measurement based on the detection packet cannot be true Reflect the situation in the actual network

[0005] In addition, multicast service quality measurement is different from unicast service quality measurement. For unicast, the packet loss rate, one-way delay, and delay jitter measured between two points can reflect the unicast service quality. For multicast, due to the one-to-many feature of multicast, the packet loss rate, one-way delay, and delay jitter measured between two points (between a multicast source and a multicast receiver) , can only reflect the quality of service between the multicast source and the multicast receiver, but cannot reflect the quality of the multicast service, so it is necessary to measure at multiple points by sampling

To perform multi-point measurement, there are two natural methods, that is, you can deploy a large number of measurement points evenly distributed in the network, or develop hand-held measurement equipment. Possible implementation, high cost, and difficult deployment. The latter deployment is relatively convenient, but it can only reflect the situation of a single point, and there are problems such as lag

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