Wang, HeReed, Mark CZhou, Xiangyun2014-04-302014-04-30Apr-2013Wang, H., Zhou, X., & Reed, M. (2013). On the physical layer security in large scale cellular networks. In 2013 IEEE Wireless Communications and Networking Conference (WCNC) (pp.2462 - 2467). Shanghai: IEEE.9.78147E+121525-3511http://hdl.handle.net/1885/11595This paper studies the information-theoretic secrecy performance in large-scale cellular networks based on a stochastic geometry framework. The locations of both base stations and the mobile users are modeled as independent two-dimensional Poisson point processes. We consider a key feature of the cellular network, namely, information exchange between base stations, and characterize its impact on the achievable secrecy rate of an arbitrary downlink transmission with a certain portion of the mobile users acting as potential eavesdroppers. In particular, analytical results are presented under diverse assumptions on the availability of eavesdroppers' location information at the serving base station, which captures the benefit from the exchange of mobile users' location information between base stations.H. Wang is with the Australian National University and NICTA. NICTA is funded by the Australian Government as represented by the Department of Broadband, Communications and the Digital Economy and the Australian Research Council through the ICT Centre of Excellence program. This work was supported by the Australian Research Councils Discovery Projects funding scheme (Project No. DP110102548 and Project No. DP130101760).application/pdfen-AUIEEEanalytical modelsbase stationsinformation exchangemobile communicationmobile computingsecuritysignal to noise ratio10.1109/WCNC.2013.65549472015-12-11