P2P streaming media system simulation platform based on NS2

Abstract

The invention provides a P2P streaming media system simulation platform based on a general network simulator (NS2). The main framework of the simulation platform sequentially comprises an NS2 basal layer, an overlay network adaptation layer, a data-scheduling adaptation layer, a player adaptation layer and a node application layer from bottom to top, wherein the interface of the NS2 basal layer comprises a node network layer interface Node, a node transmission layer interface Agent and a node application basal layer interface Application. In addition, the simulation platform also comprises a packet header information domain interface NovaPacket, a multithread simulation interface Timer, an event recorder Log, an overlay network protocol simulation interface OverlayAdapter, a data-scheduling strategy interface DataScheduler, a player data interaction interface PlayAdapter, a peer application interface PeerApp, and the like. Accordingly, the P2P streaming media system simulation platformproposes a five-layered design framework aiming at the functional characteristics of a streaming media system, and each layer corresponds to a functional module of the system; and an interface specification is proposed aiming at each module, so that a user can simulate on the simulation platform after achieving all the interfaces, and the simulation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of computer network streaming media, and more specifically, relates to the design of an NS2-based P2P streaming media system simulation platform. Background technique [0002] With the development of the Internet and the popularization of broadband applications, streaming media services are becoming a hot spot for network applications. Compared with the traditional client / server mode streaming media system, the P2P streaming media system has been widely used because of its high scalability, strong robustness, and easy load balancing. In the P2P streaming media system, each node provides data to other nodes while receiving data, which effectively reduces the pressure on the video server and avoids the problems of server single point failure and system bottleneck in the traditional mode. [0003] On the other hand, it is usually necessary to test the performance of the P2P streaming media system to verify the...

AI Technical Summary

Problems solved by technology

However, most of these interfaces are developed for P2P file sharing or simple application layer multicast. For the simulation of various complex P2P streaming media systems, there is no unified framework and clear functional abstraction. secondary development

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