Mobile Communications 

Abstract: Cellid positioning is the simplest positioning technology recommended by 3GPP which realizes positioning function by acquiring the Cellid+LAC location information of mobile terminal and calling the interface of map locating,such as Google map,to show the positioning result.To correct the position offset in the map positioning show,a position offset cancellation algorithm is proposed for accurate positioning based on triangle formula method.

Abstract: Liquidation of big data assets is an issue of common concern for domestic and foreign telecom operators alike. By analyzing sources and characteristics of telecom operators' data, from both internal and external perspectives, this paper presented data assets value mining and application modes in multiple scenes, offering a comprehensive big data development strategy for telecom operators, and proposed specifi c implementation path as well.

Abstract: In this paper, business features of mobile virtual network operator(MVNO) are firstly introduced. Then, several types of business modes and cooperative strategies of MVNOs with mobile network operators(MNO), as well as the basic network architectures and features of MVNOs in specific business mode are expounded. Finally, combined the status of domestic telecommunication industries with the successful cases of overseas MVNOs, several experiences are summarized and corresponding suggestions are put forward for domestic MVNOs to develop business.

Abstract: A localization algorithm based on Received Signal Strength Indicator(RSSI) is studied by the analysis of the wireless signal propagation model in this paper. For the existing problems of this algorithm and the influence of noise, some measures, such as mean filtering and position calculating method, are taken to improve the localization accuracy. This localization algorithm is designed and implemented on the ZigBee wireless sensor networks. The actual test shows that this localization system is a stable and accurate system with low cost and power consumption as well as easier implementation and higher reliability.