4G下切3G定位算法策略研究

Research on localization algorithm of 4G mode switching to 3G mode

定位技术是无线传感器网络的支撑技术之一,针对无线传感器网络低成本、低能耗的要求,在继承DV-Hop定位算法优点的基础上,提出根据跳数来调节节点定位过程中的数据包接收量即LDV-Hop定位算法。传感器网络是计算机科学技术的一个新的研究领域,节点定位技术是传感器网络关键技术之一,传感器节点采集到的数据必须结合其位置信息才有意义,没有位置信息的数据几乎没有利用价值。

Localization technology is one of the supporting technologies of wireless sensor network. Since the low cost and low energy consumption demands of wireless sensor network,the LDV-Hop localization algorithm is proposed based on inheriting the advantage of DV-Hop,which is according to hop-count to regulate the receiving quantities of data package in node localiza-tion process. Sensor network is a new research field of computer science and technology,node localization technology is one of the key technologies of the sensor network. It is significant that the date collected from sensor node must combine with its loca-tion information,while data without location information is valueless.