title: Resource optimized TTSH-URA for multimedia stream authentication in swallowable-capsule-based wireless body sensor networks.
abstract: To ease the burdens on the hospitalization capacity, an emerging swallowable-capsule technology has evolved to serve as a remote gastrointestinal (GI) disease examination technique with the aid of the wireless body sensor network (WBSN). Secure multimedia transmission in such a swallowable-capsule-based WBSN faces critical challenges including energy efficiency and content quality guarantee. In this paper, we propose a joint resource allocation and stream authentication scheme to maintain the best possible video quality while ensuring security and energy efficiency in GI-WBSNs. The contribution of this research is twofold. First, we establish a unique signature-hash (S-H) diversity approach in the authentication domain to optimize video authentication robustness and the authentication bit rate overhead over a wireless channel. Based on the full exploration of S-H authentication diversity, we propose a new two-tier signature-hash (TTSH) stream authentication scheme to improve the video quality by reducing authentication dependence overhead while protecting its integrity. Second, we propose to combine this authentication scheme with a unique S-H oriented unequal resource allocation (URA) scheme to improve the energy-distortion-authentication performance of wireless video delivery in GI-WBSN. Our analysis and simulation results demonstrate that the proposed TTSH with URA scheme achieves considerable gain in both authenticated video quality and energy efficiency.
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Chunqiu
authors.initials: C
authors.lastname: Wang
authors.forename: Min
authors.initials: M
authors.lastname: Zhao
mesh_terms: D053704:Capsule Endoscopy / Q000295:instrumentation / Q000592:standards; D016494:Computer Security; D003198:Computer Simulation; D003219:Confidentiality; D006801:Humans; D007091:Image Processing, Computer-Assisted; D059015:Wireless Technology / Q000295:instrumentation / Q000592:standards