1.无线自组网:
无线自组织网络是在没有任何框架或基础架构的情况下部署的无线网络。这包括无线网状网络,移动自组织网络和车载自组织网络。它的历史可以追溯到美国国防高级研究计划局(DARPA)和分组无线网络(PRNET),它们已演变为生存自适应无线网络(SARNET)计划。无线自组织网络,尤其是移动自组织网络(MANET),由于使通信变得更简单且逐渐可访问而发展迅速。在任何情况下,由于无线通信的拓扑相关行为以及它们对拓扑动态性的分布式和自适应操作,它们的约定或协议通常将难以构造。他们可以随时自由行动。因此,MANET的网络拓扑可能会在不可预测的时间随机而迅速地变化。由于拓扑结构不断变化并且不能期望节点具有稳定的数据存储,这使路由变得困难。
应用范围:
- 数据挖掘
- 军事战场
- 商业部门
- 个人局域网或蓝牙
2.无线传感器网络:
无线传感器网络可以表征为设备系统,表示为可以检测环境并通过远程或无线连接传递从被监视字段(例如,区域或体积)累积的数据的节点。可以将其描述为一个节点系统,这些节点可以一致地感知并可以控制环境,从而实现人或计算机与周围环境之间的关联。信息可能会通过不同的跳转发送到接收器(表示为控制器或监视器),该接收器可以在本地使用该信息,或者通过门户网站与不同的系统(例如Internet)关联。节点可以是固定的也可以是移动的。
应用范围:
- 环境监测
- 卫生保健
- 定位与监控
无线自组织网络和无线传感器网络之间的区别:
Wireless Adhoc Network | Wireless Sensor Network |
---|---|
The medium used in wireless adhoc networks is radio waves. |
The medium used in wireless sensor networks are radio waves, infrared, optical media. |
Application independent network is used. |
Application dependent network is used. |
Hop-to-Hop routing takes place. |
Query based (data centric routing) or location based routing takes place. |
It is heterogeneous in type. |
It is homogeneous in type. |
The traffic pattern is point-to-point. |
The traffic pattern is any-to-any, many-to-one, many-to-few, one-to-many. |
Wireless router is used as an inter-connecting device. |
Application level gateway is used as an inter-connecting device. |
The data rate is high. |
The data rate is low. |
Supports common services. |
Supports specific applications. |
Traffic triggering depends on application needs. |
Triggered by sensing events. |
IP address is used for addressing. |
Local unique MAC address or spatial IP is used for addressing. |