TY - JOUR
T1 - Secure Content Delivery in Two-Tier Cache-Enabled mmWave Heterogeneous Networks
AU - Zheng, Tong Xing
AU - Liu, Hao Wen
AU - Zhang, Ning
AU - DIng, Zhiguo
AU - Leung, Victor C.M.
N1 - Funding Information:
Manuscript received January 10, 2020; revised May 22, 2020 and October 5, 2020; accepted November 1, 2020. Date of publication November 26, 2020; date of current version December 21, 2020. The work of Tong-Xing Zheng and Hao-Wen Liu was supported in part by the National Natural Science Foundation of China under Grant 61701390, in part by the Open Research Fund of the State Key Laboratory of Integrated Services Networks, Xidian University, under Grant ISN20-19, and in part by the Post-Doctoral Research Project of Shaanxi Province under Grant 2017BSHYDZZ38. The work of Victor C. M. Leung was supported in part by the National Engineering Laboratory for Big Data System Computing Technology at Shenzhen University, China, and in part by the Natural Sciences and Engineering Research Council of Canada. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Matthieu R. Bloch. (Corresponding author: Tong-Xing Zheng.) Tong-Xing Zheng and Hao-Wen Liu are with the Faculty of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China, also with the State Key Laboratory of Integrated Services Networks, Xidian University, Xi’an 710071, China, and also with the Ministry of Education Key Laboratory for Intelligent Networks and Network Security, Xi’an Jiao-tong University, Xi’an 710049, China (e-mail: [email protected]; [email protected]).
Publisher Copyright:
© 2005-2012 IEEE.
PY - 2021
Y1 - 2021
N2 - In this paper, we investigate secure content delivery in a two-tier cache-enabled millimeter wave (mmWave) heterogeneous network composed of a macro base station (MBS) and K small base stations (SBSs) with caching capabilities. We allocate finite cache units at the SBSs and MBS to pre-store files with high popularities, where the SBSs store the most popular files, and the MBS stores the less popular ones. To deliver the file requested by a legitimate user securely, two secure transmission schemes, namely, distributed beamforming and direct transmission, are employed at the SBSs and MBS, respectively. Moreover, artificial noise (AN) is combined with the above two transmission schemes to further improve transmission security. The connection outage probability, secrecy outage probability, and secrecy throughput for the proposed mmWave transmission schemes are obtained. Based on these results, we jointly design the transmission rates and the cache resource allocation between the SBSs and MBS to maximize the overall secrecy throughput. We also provide insights into how the overall secrecy throughput is influenced by various parameters, including transmission rates, power allocation ratio of the AN scheme, and cache allocation factor. Numerical results are eventually presented to validate our theoretical analysis and demonstrate the effectiveness of the proposed transmission schemes and cache resource allocation strategy.
AB - In this paper, we investigate secure content delivery in a two-tier cache-enabled millimeter wave (mmWave) heterogeneous network composed of a macro base station (MBS) and K small base stations (SBSs) with caching capabilities. We allocate finite cache units at the SBSs and MBS to pre-store files with high popularities, where the SBSs store the most popular files, and the MBS stores the less popular ones. To deliver the file requested by a legitimate user securely, two secure transmission schemes, namely, distributed beamforming and direct transmission, are employed at the SBSs and MBS, respectively. Moreover, artificial noise (AN) is combined with the above two transmission schemes to further improve transmission security. The connection outage probability, secrecy outage probability, and secrecy throughput for the proposed mmWave transmission schemes are obtained. Based on these results, we jointly design the transmission rates and the cache resource allocation between the SBSs and MBS to maximize the overall secrecy throughput. We also provide insights into how the overall secrecy throughput is influenced by various parameters, including transmission rates, power allocation ratio of the AN scheme, and cache allocation factor. Numerical results are eventually presented to validate our theoretical analysis and demonstrate the effectiveness of the proposed transmission schemes and cache resource allocation strategy.
KW - artificial noise
KW - cooperative transmission
KW - millimeter wave
KW - Physical-layer security
KW - secrecy throughput
KW - wireless caching
UR - http://www.scopus.com/inward/record.url?scp=85097205073&partnerID=8YFLogxK
U2 - 10.1109/TIFS.2020.3040877
DO - 10.1109/TIFS.2020.3040877
M3 - Article
AN - SCOPUS:85097205073
SN - 1556-6013
VL - 16
SP - 1640
EP - 1654
JO - IEEE Transactions on Information Forensics and Security
JF - IEEE Transactions on Information Forensics and Security
M1 - 9272361
ER -