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Low Power and Lossy Networks (LLNs), as it covers a wide scope of applications, such as building automation, industrial control, healthcare etc., has received considerable attention in recent years. In many LLNs applications, Point-to-point (P2P) communication is crucial, which extremely need to be supported by reliable and energy- efficient routing protocols. However, traditional routing protocols...
Heterogeneous Networks (HetNets) are an attractive way of increasing network throughput, expanding network coverage, and reducing energy consumption, but it may lead to the problems of high cost infrastructure investment and high computational complexity to mobile operators. In this paper, we propose a new paradigm for the deployment of HetNets in LTE-Advanced system, where the Donor evolved nodeB...
In this work, we present a polarized-MIMO enabled cooperation framework between multiple secondary users (SUs) and a single primary user (PU). To achieve a two-phase cooperative communication paradigm, some state-of-the-art polarization signal processing techniques, e.g., polarization zero-forcing and oblique projection polarization filtering, are introduced to address the co-channel interference...
In this paper, we propose a wormhole attack resistant secure neighbor discovery scheme, named SND, for 60 GHz directional wireless network with a centralized network controller (NC). In specific, the proposed SND scheme consists of three phases: the NC broadcasting phase, the network node response/authentication phase and the NC time-delay analysis phase. In the broadcasting phase and response/authentication...
Roadside Units (RSUs) aided distributed certificate service is a promising approach for ensuring security and privacy preservation in vehicular ad hoc networks (VANETs), where the existence of RSUs is critical for such a scheme in order to allow On-Board Units (OBUs) to update their short-time certificates on time. However, RSUs may only be deployed at some critical points along roads due to the cost...
In this paper, we propose a Novel and Efficient Hash-chain based Certificate Management (NEHCM) scheme for vehicular communications. In NEHCM, to protect driver privacy, each vehicle is equipped with a large set of short-time certificates, and most importantly, serial numbers of these certificates satisfy hash-chain relationship. As a result, the certificate revocation becomes an easy task by simply...
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