標題: | Reducing Call Routing Cost for Femtocells |
作者: | Lin, Yi-Bing Gan, Chai-Hien Liang, Ching-Feng 資訊工程學系 交大工研院聯合研發中心 Department of Computer Science NCTU/ITRI Joint Research Center |
關鍵字: | Call setup;femtocell;femto base station (femto BS);femto private branch exchange (FPBX) |
公開日期: | 1-七月-2010 |
摘要: | Femtocell is an effective solution to improve indoor coverage for cellular networks, where short-range and low-power Base Stations (BSs) called Femto BSs are deployed in small areas (e. g., buildings). We propose the Femto Private Branch Exchange (FPBX) to concentrate the traffic of the Femto BSs in a specific area, such as a campus or an enterprise with central or distributed locations. Through the FPBX, a normal cellular call between two Femto users can be replaced by a low-cost extension call. Therefore, the call routing cost can be significantly reduced. In this approach, the existing mobile network nodes are not modified. We analytically analyze the call routing performance for the FPBX approach, and develop simulation experiments to validate against the analytic model. Our study indicates that the FPBX approach can effectively reduces the call setup costs and the voice trunk costs among Femto users by slightly increasing the normal cellular call setup costs. |
URI: | http://dx.doi.org/10.1109/TWC.2010.07.091179 http://hdl.handle.net/11536/5154 |
ISSN: | 1536-1276 |
DOI: | 10.1109/TWC.2010.07.091179 |
期刊: | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS |
Volume: | 9 |
Issue: | 7 |
起始頁: | 2302 |
結束頁: | 2309 |
顯示於類別: | 期刊論文 |