【摘要】 随着Internet的不断发展,可以考虑利用Internet作为我国现有航天测控网的补充和扩展,对航天器进行测控,大幅度提高我国航天测控网的覆盖度。但是在数据传输方面,基于Internet的航天测控网则面临着传输不公平性问题。该问题是由UDP业务增长和TCP拥塞控制友好性原则及其他原因造成的,可能导致数据传输的流量过低。提出了两种简单方法来降低UDP对TCP造成的不公平性并试图改善TCP流量过低的情况。仿真结果表明,这种改进思路具有积极的意义,值得在该方向上作进一步探索。更多还原

【Abstract】 With the development of Internet,we can consider using the Internet to set up a TT&C(track,telemetry and control) network which can track the spaceflight as the complement and expanding of our current TT&C network in order to enhance the coverage of our country’s TT&C network by a wide margin.But in data transmission field,the TT&C network based on the Internet is confronted with the unfair problem.Those can bring great unfairness to TCP and can lead TCP flow to appear too low mainly are the increasing of UDP traffic and the TCP-friendly Congestion Control principle or other reasons.In this paper,two simple ways are put forward to reduce the unfairness and deal with the lower situation of TCP flow.A positive response can be indicated from the simulation results of such improvement,so it’s worth to do further research.更多还原