In the next generation of wireless communication systems, there will be a need for the rapid deployment of independent mobile users. Significant examples include establishing survivable, efficient, dynamic communication for emergency operations, disaster relief efforts, and military networks. Such network scenarios cannot rely on centralized and organized connectivity, and can be conceived as applications of mobile ad hoc networks. A MANET is an autonomous collection of mobile users that communicate over relatively bandwidth constrained wireless links. Since the Nodes are mobile, the network topology may change rapidly and unpredictably over time. The network is decentralized, where all network activity including discovering the
标签： communication generation the wireless
上传时间： 2014-01-07
上传用户：cuibaigao
In the next generation of wireless communication systems, there will be a need for the rapid deployment of independent mobile users. Significant examples include establishing survivable, efficient, dynamic communication for emergency operations, disaster relief efforts, and military networks. Such network scenarios cannot rely on centralized and organized connectivity, and can be conceived as applications of mobile ad hoc networks. A MANET is an autonomous collection of mobile users that communicate over relatively bandwidth constrained wireless links. Since the Nodes are decentralized, where all network activity including discovering the
标签： communication generation the wireless
上传时间： 2014-01-04
上传用户：tedo811
楼术描述项: (1).该项目中"我的电脑"是作者自定义的root节点,没有设定其路径,所以BeforeExpand事件中会从它开始依次遍历,但"我的电脑"会提示"没有指定路径".故需要if(e.Tag.ToString() != "我的电脑")判断.同时"我的文档"需要再次获取其路径,依次实现Add子节点; (2).同时在"我的文档"和盘符中需要添加tNode.Nodes.Add("")加载空节点形成+号,如果没有该+号,BeforeExpend事件不会被调用,子目录无法获取加载,在BeforeExpand事件调用TreeViewItems.Add加载其子结点需要e.Nodes.Clear();清除该结点的子目录再加载. (3).提供两篇类似文章供大家学习,经过对比可以发现:第一篇仅从驱动器(C盘)开始加载,所以BeforeExpend简单展开子目录即可,不需要判断"我的电脑"和"我的文档".第二篇含"桌面",因此需要判断路径:"C# TreeView磁盘文件,AfterSelect显示加号-骆驼祥子" 和"Treeview树状显示文件夹" .同时补充一篇很优秀的文章供大家学习"WinForm应用：ListView做图像浏览" (4).补充TreeView(树视图)事件:更详细见"c# 树状视图(TreeView类)". 事件 描述 AfterCheck 在选中节点复选框后引发 AfterCollapse 在折叠一个节点后引发 AfterExpand 在扩展一个节点后引发 AfterSelect 在选中一个节点后引发 BeforeCheck 在选中节点复选框之前引发 BeforeCollapse 在折叠一个节点之前引发 BeforeExpand 在扩展一个节点之前引发 BeforeSelect 在选中一个节点之前引发 (5).补充两个关于论坛讨论"c#怎样动态读取资源文件里的图片"和"在C＃中怎么调用Resources文件中的图片" (6).在《C#典型模块与项目实战大全》(清华大学出版社-丁士锋)书中谈到,出于对程序响应性能考虑,它先加载盘符结点,没有使用递归一次性加载所有文件到树状列表中,代码通过AfterSelect事件和FileSystemWatcher控件,监听加载.并使用线程池Task更新加载TreeView,希望大家去学习. 总结 该篇通过TreeView加载了磁盘目录路径,并通过ImageList加载图标.那么怎样实现阅读文件夹下文件,获取其图标、文件大小、扩展名等信息,并双击打开文件呢?下一篇将接着讲述.最后希望该文章对大家有所帮助,文章中很多链接都可以供觉得有用的同学学习,感谢上面提到的文章及书籍作者.同时如果文章中有错误或不足之处请原谅,有问题或建议者亦可提出.希望尊重作者劳动果实勿喷.
上传时间： 2016-08-15
上传用户：baobao9437
Throughout the course of my work in multihop mobile ad hoc networks (MANET) over the last several years, I reached the conclusion that mobility models and perfor- mance metrics need to be treated in detail in designing these networks that are the ultimatefrontierinwirelesscommunications. Awidevarietyofmobilitymodelscan be used by mobile Nodes.
标签： Handbook Networks Mobility Mobile Models Hoc for Ad of
上传时间： 2020-05-27
上传用户：shancjb
Complex networks are powerful allies of our quest to tackle complexity in all of science. Many lines can be written about the benefits of using networks to study complex systems. Nevertheless, if I had to name their single most appealing property,Iwouldsaysimplicity.Onecanmaptheinteractingelementsofanysystem to a set of Nodes, and connect these Nodes with a set of links according to their interactions.
上传时间： 2020-05-27
上传用户：shancjb
Advances in communication and networking technologies are rapidly making ubiq- uitous network connectivity a reality. Wireless networks are indispensable for supporting such access anywhere and at any time. Among various types of wire- less networks, multihop wireless networks (MWNs) have been attracting increasing attention for decades due to its broad civilian and military applications. Basically, a MWN is a network of Nodes connected by wireless communication links. Due to the limited transmission range of the radio, many pairs of Nodes in MWNs may not be able to communicate directly, hence they need other intermediate Nodes to forward packets for them. Routing in such networks is an important issue and it poses great challenges.
标签： Multihop Wireless Networks
上传时间： 2020-05-31
上传用户：shancjb
Heterogeneous Network (HetNet): A network that consists of a mix of macro cells and low-power Nodes, e.g. Pico, Femto, Relay Node (RN) and Remote Radio Head (RRH)
标签： Efficient Spectrum Energy and
上传时间： 2020-06-01
上传用户：shancjb
A wireless communication network can be viewed as a collection of Nodes, located in some domain, which can in turn be transmitters or receivers (depending on the network considered, Nodes may be mobile users, base stations in a cellular network, access points of a WiFi mesh etc.). At a given time, several Nodes transmit simultaneously, each toward its own receiver. Each transmitter–receiver pair requires its own wireless link. The signal received from the link transmitter may be jammed by the signals received from the other transmitters. Even in the simplest model where the signal power radiated from a point decays in an isotropic way with Euclidean distance, the geometry of the locations of the Nodes plays a key role since it determines the signal to interference and noise ratio (SINR) at each receiver and hence the possibility of establishing simultaneously this collection of links at a given bit rate. The interference seen by a receiver is the sum of the signal powers received from all transmitters, except its own transmitter.
标签： Stochastic Geometry Networks Wireless Volume and II
上传时间： 2020-06-01
上传用户：shancjb
A mobile ad-hoc network (MANET) is formed by multiple moving Nodes equipped with wireless transceivers. The mobile Nodes communicate with each other through multi-hop wireless links, where every node can transmit and receive information. Mobile ad-hoc networks have become increasingly important in areas where deployment of communications infrastructure is difficult.
标签： Telecommunications Modeling
上传时间： 2020-06-01
上传用户：shancjb
A wireless ad-hoc network is a wireless network deployed without any infrastructure. In such a network, there is no access point or wireless router to forward messages among the computing devices. Instead, these devices depend on the ad-hoc mode of their wireless net‐ work interface cards to communicate with each other. If the Nodes are within the transmis‐ sion range of the wireless signal, they can send messages to each other directly. Otherwise, the Nodes in between will forward the messages for them. Thus, each node is both an end system and a router simultaneously.
上传时间： 2020-06-01
上传用户：shancjb
