低轨卫星网络中的自适应速率网络编码

针对低轨卫星网络星际链路时变性、不可靠性等特点,提出了在低轨卫星网络中进行信息分发的多播卫星网络的自适应速率网络编码方案。首先,构造了多速率静态鲁棒网络编码算法;然后通过对网络容量的估计,实现了自适应速率网络编码。仿真结果表明:自适应速率网络编码提高了信息传递的成功率,所能达到的信息速率远优于固定速率下的网络编码策略,并且很好地逼近了网络的容量极限。

Rate-adaptive network coding for low earth orbit satellite networks

Inter-satellite links are time-varying and unreliable in low earth orbit(LEO) satellite networks.A rate-adaptive network coding scheme is developed for LEO satellite multicasting networks using robust multi-rate static network coding.Estimates of the multicast capacity are used to derive the rate-adaptive network coding.Simulations show that the scheme enhances the packet delivering ratio relative to static rate network coding and achieves a much higher information rate which closely approaches the multicas...