Method and system for immediately processing real time media stream data packets

Abstract

This invention relates to a method and system of promptly processing real-time media stream data packet, which provides multimedia gateway, integrate access device, multimedia terminal and network node as such a method and system of promptly processing real-time media stream data packet according to RTP / RTCP based on UDP (User Datagram Protocol). The improvement of this invention is the adding of three modules, which are the module of IP data packet filtering, the module of tranfering according to UDP and the module of processing ARP table based on UDP port strategy. The method comprising: fast reception and processing of realtime media stream data packet based on RTP / RTCP protocol; ARP table based on UDP port strategy and refurbishing mechanism; the monitored reception and delivery compared with traditional TCPIP protocol stack and socket programming. This invention can fast process real-time media stream data packet, improve the processing capacity of equipment, reduce the network delay of media stream data packet. Thus, the quality of network service is improved.

Description

technical field [0001] The present invention relates to a kind of IP network data communication processing technique, more precisely relates to RTP / RTCP (Real-timeTransport Protocol / Real-time Transport Control Protocol real-time transport protocol / real-time transport protocol) based on UDP (User Datagram Protocol). A fast processing method for transmitting real-time media stream data packets by Transmission Control Protocol (TCP), which is applied to real-time media stream data based on RTP / RTCP transmission in media gateways, IADs (Integrate Access Devices), IP multimedia terminals and other devices Fast receive and fast send processing of packets. [0002] The invention also relates to a system for rapidly processing real-time media stream data packets. Background technique [0003] With the popularization of the Internet and the application of multimedia technology on the Internet, there is an urgent need for real-time transmission of video, audio and other real-time med...

AI Technical Summary

Problems solved by technology

[0009] 2. The standard TCP / IP protocol stack fills the relevant fields in the data packet in different layers, and processes the data of different protocol layers layer by layer. Therefore, there are many layers, and more layers will inevitably require more dynamic memory application operations. In this way, a large number of data structure conversions, data copies, and data judgments will be performed, which are very time-consuming and occupy CPU resources.

[0010] 3. When sending data through the standard TCP / IP protocol stack, each data packet must be searched for routing and ARP. These operations of the protocol stack are very time-consuming

[0011] There are also some unnecessary processing in the method of receiving RTP / RTCP data packets in equipment such as media gateways, IADs, and IP multimedia terminals, resulting in low processing efficiency, which is specifically manifested in the following two aspects:

[0012] 1. There are many redundant and time-consuming processes in this layered unpacking process, such as multiple protocol types, address information, data legality judgments, multiple data structure conversions, multiple data copies, etc. These operations are of great importance to Not necessary for UDP data reception for known port ranges

[0013] 2. The RTP / RTCP protocol layer application task adopts SOCKET programming timing query method to receive data, which greatly increases the delay and wastes CPU resources

In the sending direction, the RTP / RTCP application layer program calls the sending function of the SOCKET API to send the data, which has the problem of low processing efficiency; in the receiving direction, the RTP / RTCP protocol application calls the SOCKET API receiving Function to receive data packets, and layered unpacking processing, there is also the problem of low processing efficiency

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