Description: NS2目前广泛采用的网络模拟软件，该程序实现了模拟环境下的RTT和丢包率的测量。-NS2 now widely used in network simulation software. The program simulated environment of RTT and packet loss rate measurements. Platform: |
Size: 3362 |
Author:liangwen |
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Description: NS2目前广泛采用的网络模拟软件，该程序实现了模拟环境下的RTT和丢包率的测量。-NS2 now widely used in network simulation software. The program simulated environment of RTT and packet loss rate measurements. Platform: |
Size: 3072 |
Author: |
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Description: iLBC 产生背景
在VoIP的应用中，大部分厂商采用CELP (Code Excited Linear Prediction) 算法的低速率语音编解码，如ITU G.729和G.723.1等。而VoIP应用主要在包交换的IP网络上进行传输，无法避免IP网络的丢包、延时、抖动等实时传输问题，而传统的这几个CELP算法对高丢包的处理不是很好，因而很大程度上会影响语音通话效果。
-iLBC background in the application of VoIP, Most manufacturers to use CELP (Code Excited Linear Prediction) Algorithm low-rate voice codecs, such as G.729 and ITU G.723.1, etc.. And the main application of VoIP in the IP packet-switched network for transmission, could not avoid IP network packet loss, delay, jitter and other real-time transmission, and a few traditional CELP algorithm to handle the high packet loss is not very good, which will largely affect voice calls effect. Platform: |
Size: 67584 |
Author:王刚 |
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Description: 本文主要研究了W-WAN中GPRS网络的移动视频传输问题。文中探讨了GPRS的网络结构、协议体系以及链路特性，从中我们看出：
GPRS网络链路不仅具有一般无线链路数据传输中遇到的延迟大、误码率高等共性问题，而且具有移动通信系统采用蜂窝频率复用方式带来的小区切换，
以及由于通信中链路性能随着地理位置变换而变化造成的GPRS网络中不可避免的经常性遭遇的冗长时延和突变时延。
这使得目前GPRS网络中使用的传统TCP或UDP传输协议均不能适应GPRS自身的链路特性，也不能实现高效的分组传输。-This paper mainly studied the W-WAN in the GPRS network for mobile video transmission problems. The article discusses the GPRS network architecture, protocol architecture, as well as link characteristics, from which we can see: GPRS network link not only has the general wireless link data transmission delay encountered in large, common problems of higher bit error rate, and with mobile communications system uses a cellular frequency reuse methods brought about by cell switching, as well as the communication link performance with the location change and change is inevitable GPRS network, the recurrent encountered lengthy delay and delay mutation. This makes the current GPRS network using the traditional TCP or UDP transport protocol are unable to adapt its own GPRS link characteristics, but also efficient packet transmission can not be achieved. Platform: |
Size: 3594240 |
Author:QHLee |
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Description: 自己开发的一个检测网络延时和丢包率的小工具-Developed a detection network delay and packet loss rate of the small tools Platform: |
Size: 56320 |
Author:Zhu Changyong |
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Description: AODV和AOMDV路由协议性能仿真与分析:：使用NS一2仿真软件，选取分组投递率、端到端的平均时延、归一化的路由开销和路由发现频率4个指标对AODV和AOMDV
路由协议进行了性能仿真，通过改变业务源连接数目、节点的暂停时间分析比较这些参数对2个协议性能的影响，研究结果表明了AOMDV
多径协议的优越性。并提出了对AOMDV协议的改进。-AODV and AOMDV Routing Protocol Performance Simulation and Analysis:: Using NS-2 simulation software, select the packet delivery rate, the average end-to-end delay, normalized routing overhead and route discovery frequency of four indicators of AODV and AOMDV routing protocol performance simulation carried out by changing the number of operations to connect the source, node pause time analysis and comparison of these two parameters on the performance of the agreement, research results show that the multipath AOMDV the superiority of the agreement. And made improvements on AOMDV agreement. Platform: |
Size: 158720 |
Author:king |
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Description: 在网络仿真NS中对延时分析，丢包率分析，延时抖动分析，网络吞吐量分析等给出了可行性算法，直接就能用，对学NS2的人很有用的-Network simulation in NS for latency analysis, analysis of packet loss rate, delay jitter analysis, network throughput analysis give a feasibility algorithm, can be used directly on people who learn NS2 very useful Platform: |
Size: 3072 |
Author:林华 |
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Description: 当IP语音包的网络时延抖动较小时，一般的语音缓冲算法可以得到较好的语音质量。当网络中存在突发大时延时，就会出现极大丢包率或极大端到端时延，从而难以获得好的语音质量。为此，提出针对突发大时延下的自适应语音缓冲算法。通过估算网络平均时延和学习语音包经过的网络路径上的状态，来确定需要控制端到端时延大小和语音包的丢包率，动态调整Jitter Buffer队列的最小深度和最大深度，从而可以尽量减小语音裂缝（gap）的出现。通过基于听觉模型的客观音质评价（PESQ）仿真计算以及在实际语音网关设备中的应用表明算法对语音通信质量有一定的改善作用。-The continuous playout of voice packets in the presence of variable network delays is often achieved by buffering the received voice packets for sufficient time. Basic jitter buffering algorithms can work well only when the delay does not spike status of the networks, is presented to promote the quality of voice communication. It timely adjusts the minimal and maximal depth of buffer queue according to the control target of end-to-end delay and packet loss rate. The algorithm can much more easily achieve the continuous playout because it plays voice packet at a fixed inter-play time in the most time of a talk-spurt. The control target of packet loss rate can be extended to 20 . However, the basic algorithms can only bear 5-10 of the packet loss rate. Perceptual evaluation of speech quality(PESQ) is applied to assess the speech quality in the simulation. It is shown that the algorithm can obviously promote the quality of voice communication in IP networks with spike delay. The practic Platform: |
Size: 329728 |
Author:瞿志超 |
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Description: 使用ns2网络仿真软件时，统计无线场景吞吐量、延时、抖动和丢包率的通用脚本文件。-Using the ns2 network simulation software, statistical radio scene throughput, delay, jitter and packet loss rate of the general-purpose script file. Platform: |
Size: 3072 |
Author:cn |
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Description: 2001年诞生的网络编码技术，对网络性能，如吞吐量、丢包率、时延等都有极大的提升，是一种应用于MAC层和路由层的新型编码技术。该资料包含三本讲解网络编码技术的英文原版书籍，有助于全面了解和学习网络编码。-Network coding,which came into being in 2001,raises the network s throughput, packet loss rate, delay,etc dramatically.The document includes three books which covers network coding specifically. Platform: |
Size: 2933760 |
Author:邓玮 |
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Description: 带有缓存分组的分组层的接纳控制模型，分析了丢包率和平均延时随系统内分组大小的关系-Packetization layer packet with a cache admission control model, the analysis of packet loss rate and average packet delay with the system, the relationship between the size of Platform: |
Size: 16384 |
Author:王宇坤 |
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Description: 在NS2网络模拟工具中，用以测试协议吞吐量、丢包率、传输时延的AWK角本-In the NS2 network simulation tool to test the agreement throughput, packet loss rate, transmission delay of the AWK angle of the Platform: |
Size: 5120 |
Author:zhangpan |
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Description: 从ns 的仿真结果里求得仿真的平均端到端时延和丢包率-The simulation results from ns simulations where the average end-to seek delay and packet loss rate Platform: |
Size: 1024 |
Author:xiekai |
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Description: 在无线网络UDP中测量吞吐量丢包率端到端时延-UDP in wireless network packet loss rate in the end to end delay measurement throughput Platform: |
Size: 3072 |
Author:Apple67 |
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Description: 在无线网络UDP中测量吞吐量丢包率端到端时延-UDP in wireless network packet loss rate in the end to end delay measurement throughput Platform: |
Size: 3072 |
Author:Apple67 |
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Description: 无线网络中吞吐量、丢包率、端到端时延的测量 希望有帮助-Wireless network throughput, packet loss rate, end to end delay measured want to help Platform: |
Size: 3072 |
Author:chen lu |
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Description: 经过验证可以使用的awk源码 包括测设丢包率 吞吐量 抖动率 延迟时间-You can use the awk proven source, including packet loss rate determination for the rate of throughput delay jitter Platform: |
Size: 3072 |
Author:陈磊 |
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Description: ns中用于无线网络的仿真，并求得了无线网络的丢包率，延时时间等性能指标。-ns in the simulation for wireless networks and obtain a wireless network packet loss rate, delay time and other performance indicators. Platform: |
Size: 1024 |
Author:侯春春 |
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Search - packet delay rate