基于卫星的可靠组播协议研究

卫星组播是未来网络通信发展的方向之一,卫星由于其自身独特的特点内在地支持组播,但另一方面又因为大时延和相对复杂的无线信道特性降低了组播业务的可靠性。针对这一问题,在单向链路卫星组播结构基础上,融合分组级FEC和自适应速率技术,提出了一种新的可靠组播协议,经过理论分析可知,新的协议具有较好的差错控制和拥塞控制能力。

Study of Reliable Multicast Protocol over Satellite

Satellite muhicast is one of the developing directions in the future networking communications, satellite intrinsically supports muhicast due to its unique characteristics, but on the other hand, the long delay and complicated wireless channel characteristic will decrease the reliability. According to this problem, in this paper, a new reliable muhicast protocol is proposed which integrates packet-level FEC and rateadaptive technology on the basis of unidirectional satellite link. The new protocol has good ability for error control and congestion control by theoretical analysis.