Secure Video Streaming in Heterogeneous Small Cell Networks With Untrusted Cache Helpers

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autorinnen und Autoren: Xiang L, Wing Kwan Ng D, Schober R, Wong VW
Zeitschrift: IEEE Transactions on Wireless Communications
Jahr der Veröffentlichung: 2018
Band: 17
Heftnummer: 4
Seitenbereich: 2645 - 2661
ISSN: 1536-1276
Sprache: Englisch


This paper studies secure video streaming in cache-enabled small cell networks, where some of the cache-enabled small cell base stations (BSs) helping in video delivery are untrusted. Unfavorably, caching improves the eavesdropping capability of these untrusted helpers as they may intercept both the cached and the delivered video files. To address this issue, we propose joint caching and scalable video coding of video files to enable secure cooperative multiple-input multiple-output transmission and, at the same time, exploit the cache memory of both the trusted and untrusted BSs for improving the system performance. Considering imperfect channel state information at the transmitters, we formulate a two-timescale non-convex mixed-integer robust optimization problem to minimize the total transmit power required for guaranteeing the quality of service and secrecy during video streaming. We develop an iterative algorithm based on a modified generalized Benders decomposition to solve the problem optimally, where the caching and the cooperative transmission policies are determined via offline (long-timescale) and online (short-timescale) optimization, respectively. Furthermore, inspired by the optimal algorithm, a low-complexity suboptimal algorithm based on a greedy heuristic is proposed. Simulation results show that the proposed schemes achieve significant gains in power efficiency and secrecy performance compared to several baseline schemes.

FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Schober, Robert Prof. Dr.-Ing.
Lehrstuhl für Digitale Übertragung
Xiang, Lin
Lehrstuhl für Digitale Übertragung

Einrichtungen weiterer Autorinnen und Autoren

University of British Columbia
University of New South Wales (UNSW)


Xiang, L., Wing Kwan Ng, D., Schober, R., & Wong, V.W. (2018). Secure Video Streaming in Heterogeneous Small Cell Networks With Untrusted Cache Helpers. IEEE Transactions on Wireless Communications, 17(4), 2645 - 2661.

Xiang, Lin, et al. "Secure Video Streaming in Heterogeneous Small Cell Networks With Untrusted Cache Helpers." IEEE Transactions on Wireless Communications 17.4 (2018): 2645 - 2661.


Zuletzt aktualisiert 2019-11-08 um 13:10