一种应用层可靠组播传输控制方法

A Reliable Multi-cast Transmission Control Method in Application Layer

针对航天运载和战术领域数据处理要求多台终端同时高效显示数据的需求,提出了一种应用层可靠组播传输控制方法。该方法在发送的数据包中添加额外的序号控制信息,发送方定时广播携带已发送最大数据序号的心跳包,接收方根据心跳包中的序号向发送方反馈丢失的报文序号和已收的最大连续报文序号。实验证明,本文提出的应用层可靠组播传输控制方法能够有效地保证组播传输的有序性和可靠性,并在航天数据处理领域得到了广泛应用。

In this paper,a reliable multi-cast transmission control method at the application layer is proposed to meet the requirements of data procession in the aerospace launch vehicle and tactical weapon fields,which requires multiple terminals to display data efficiently at the same time.The additional sequence number control information is added to the sent packet by using this method.The sender broadcasts the heartbeat which carries the maximum data sequence,receivers feedback the missing data sequence number and the maximum continuous data sequence according to the sequence in the heartbeat.Experiment results show that the application layer reliable multicast transmission control method proposed in this paper can effectively ensure the order and reliability of the multicast transmission data and it has been widely used in the field of aerospace data procession.