摘要： 针对IP组播在网络层中使用UDP协议不能有效保证数据可靠传输的问题，提出一种高效、稳定的在端系统间保证数据可靠传输系统。使用CRC-32、端到端差错恢复和端到端拥塞控制等关键技术。该技术成功应用于沈阳地铁乘客资讯系统(PIS)。测试结果表明，该系统保持IP组播技术节省带宽资源、提高数据传输效率等优点，保证了数据的可靠传输。
关键词:
IP组播,
可靠传输,
差错恢复,
拥塞控制
Abstract: Aiming at the problems that IP multicast depending on UDP protocol in the network layer can not guarantee reliable transmission, an end-to-end reliable transmission system with the properties of high-speed, high efficiency and stability to all kinds of application is proposed, the key technologies include CRC-32, end-to-end error recovery, end-to-end congestion control and so on. It is successfully applied in Passenger Information System(PIS) of Shenyang subway. The implementation of end-to-end reliable transmission system is tested and analyzed. Test results indicate that the system can guarantee reliable transmission among the end-to-end systems, as well as maintaining the advantages of saving network bandwidth resources and improving the data transmission efficiency in IP multicast.
Key words:
IP multicast,
reliable transmission,
error recovery,
congestion control
中图分类号:
孙大为, 曲博, 李晓, 江早, 常桂然. 端到端IP组播技术及其在PIS中的应用[J]. 计算机工程, 2010, 36(16): 232-233.
SUN Da-Wei, QU Bo, LI Xiao, JIANG Zao, CHANG Gui-Ran. End-to-end IP Multicast Technology and Its Application in Passenger Information System[J]. Computer Engineering, 2010, 36(16): 232-233.