According to this problem, in this paper, a new reliable multicast protocol is proposed which integrates packet-level FEC and rate-adaptive technology on the basis of unidirectional satellite link.
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。
In all cases, you are looking for a high level of error packets, retransmissions, or dropped packet transmission, all of which indicate that the network is busy.
在所有情况下，都要寻找比较高的错误数据包、重新传输或丢失数据包传输数量，这些都说明网络忙。
Authentication at the packet level allows users to be sure that the packet received came from a particular machine, and that its contents were not altered somewhere along the way.
包级别的认证让用户可以确保收到的包来自于特定的机器，并且它的内容在传输路径上没有被改变。
While running commands such as netstat can provide useful information, sometimes you need to drill down more to the packet level.
虽然运行诸如netstat之类的命令可以提供一些有用的信息，但有时您仍然需要深入到数据包级别上进行更进一步的分析。
When you examine the raw data, snoop automatically formats and parses the content of the packet for you, even down to the individual protocol level.
当您查看原始数据的时候，snoop可以自动地为您格式化并解析数据包的内容，甚至深入到每个协议级别。
A detecting method for the phase drift in excited signals based on wavelet packet analysis is presented. This method can detect the transient phase drift in signals at great level.
提出了一种基于小波包分析的激磁信号相位漂移检测方法，能够以较高的精度检测出相位信号的瞬时漂移。
PTP can be applied in a packet network easily and flexibly with submicrosecond-level synchronization accuracy, and will become an effective alternative to GPS.
PTP技术可方便灵活地应用于分组网络中，同步精度可达亚微秒级，将成为GPS的有效替代。
Now let's see at a high level how a network packet is structured. Depending on the protocol being used for the communication, you could be dealing with one of the following IP packets.
现在我们从更高的层次看看网络包的结构是怎样的。
The characteristics and deficiencies of current queuing models are discussed and a novel model is brought forward in packet level.
讨论了当前排队模型的特点与不足，从分组层次上提出了一种新的模型。
This time at least 5 seconds for OSPF routing protocol, during the fault the packet will be dropped, most of the applications can accept this level of delay.
对OSPF路由协议，这个时间至少为5秒，期间经过故障节点或链路的流量将会被丢弃，绝大多数的应用可以承受这种程度的延迟。
While running commands (such as netstat) can provide useful information, sometimes you need to drill down more to the packet level.
虽然运行netstat等命令可以提供有用的信息，但有时您仍然需要深入到数据包作进一步分析。
The multi agent detection system can simultaneously monitor networked computer's activities at different levels, including the user level, system level, process level and packet level.
多代理检测系统同时在不同层次监视联网计算机的活动情况，包括用户级、系统级、进程级和数据包级。
Traditional IDS systems based on packet level with capturing, reassembling and matching can't follow the desire of efficiency.
基于报文级别的捕获、还原、匹配的传统入侵检测系统效率无法满足要求。
But this study is the first to experimentally show that optical precursors exist at the single-photon level, and that they are the fastest part of the single-photon wave packet.
而这次的研究则是第一次用实验证明，在单个光子层次上也存在着光前驱，而且它们也是单个光子的波包中最快的部分。
Since the UDP protocol is non-connection, a transfer control should be taken on the high level to avoid high packet loss when the network is bad.
而UDP协议是无连接的，因此要在上层对用户数据报协议包的发送速率进行控制，来避免在网络情况不良的时候，产生较大的丢包率。
It solves the problems of throughpout decreasing and latency increasing in the traditional packet forwarding model, and avoids the latency introduced by mutli-level queues in the traditional model.
本文提出并实现了一个改进的路由器包转发模型，该模型解决了传统模型在系统过载时吞吐量下降和延迟剧增的问题，并避免了传统模型中多级队列导致的包转发延迟。
It solves the problems of throughpout decreasing and latency increasing in the traditional packet forwarding model, and avoids the latency introduced by mutli-level queues in the traditional model.
本文提出并实现了一个改进的路由器包转发模型，该模型解决了传统模型在系统过载时吞吐量下降和延迟剧增的问题，并避免了传统模型中多级队列导致的包转发延迟。
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