Stream media server system based on VSAT

Abstract

The present invention provides a VSAT-based streaming media server system, and relates to a VSAT system which has the function of TCP / IP network layer. In the system, the small station of a front streaming media encoding device is connected with satellite communication; the main station of the satellite communication is orderly connected with HPP, LAN SWH, a router, a 2M private-line / optical-fiber network, an information center router, and a streaming media server, and is connected with the client through Interne; the system can be used for collecting, compressing and transmitting the real-time video flow based on the H.264 image encoding and decoding technology; a relatively balanced optimal parameter between clarity and continuity is modulated in the early stage of the operation of the system; the sliding window is enlarged to reduce the unnecessary retransmission caused by the delay and dithering of the network; the motion of the packet length can be regulated to reduce the rate ofretransmission; the streaming media server is arranged between the VSAT system and the broadband network system, so as to retransmit and reschedule the streaming media information, thus the system can be used for transmitting the streaming media information, which can be stably transmitted, have high transmission quality and be accepted by the user.

Description

technical field [0001] The invention relates to a VSAT system with data transmission function, through streaming media encoding and decoding equipment and streaming media server equipment, to provide users on Internet / Intranet and other broadband networks with stable high-quality, user-acceptable Real-time streaming media information service, based on VSAT streaming media server system. Background technique [0002] At present, there are many broadband wireless access technologies capable of transmitting video services, such as VSAT broadband satellite wide area access, broadband wireless access system (BWA, including MMDS and LMDS) represented by IEEE 802.16, and medium-distance wireless local Loop technology, wireless local area network access represented by IEEE802.11 series and HiperLAN, IEEE 802.15 wireless personal area network WPAN, including short-distance wireless interconnection technology represented by Bluetooth, infrared, ultra-wideband and HomeRF. [0003] VSA...

AI Technical Summary

Problems solved by technology

[0007] 1. The inbound bandwidth of data transmission, especially the uplink bandwidth of the VSAT small station is relatively low, with a rate of 76.8-153.6Kbps

2. The transmission delay is relatively large. According to the actual measurement of the VSAT system of the Xinjiang Transmission Bureau, from the VSAT small station to the gateway station via the 2M dedicated line to the center, the delay of the 500-character IP byte packet is about 1-3m

3. Due to various reasons, the network jitter of the whole system is relatively large

The dynamic servo adjustment transmission signal power proposed by this technology has many prerequisites and constraints, and at the same time, it can only partially alleviate the application contradiction, so there is currently no feasible technical solution.

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