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Recently, femtocells, which cover a cell area of several tens of meters, have been attracting considerable attention in the field of mobile data communications. In the standard method, when a femtocell for data communication is connected through a public network such as a broadband access network or the Internet, an IPSec tunnel is established between the femtocell and the security gateway located...
In order to overcome the shortcoming of traditional methods of monitoring oil wells, a design of remote monitoring system based on ARM and GPRS was presented. And then the hardware and software design methods of RTU, system networking method and the design method of background monitoring center were detailed. Using GPRS module and relying on GPRS wireless network and Internet, RTU distributed in different...
This paper explores the attributes, layering models and objective functions in cross layer designs for mobile ad hoc wireless networks by taking all the statistical characteristics and constraints from the physical (PHY) layer, media access control (MAC) layer and network (NET) layer into consideration. This paper reviews the entire network optimization across all the PHY/MAC/NET layers. At the PHY...
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