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Passive attacks have caused a great threat to Wireless Sensor Networks (WSN), therefore the research of communication nodes and the stealthiness of communication relationship is crucial. Due to the problem of node hidden mechanism, a secure anonymous routing named Node-Uncorrelated Pseudonym Pairwise Mechanism (NUCPP) is proposed in this paper. Instead of using the traditional pseudonym node correlation...
This paper reviews a range of problems in the road transport field and the potential role of vehicular ad-hoc network systems (VANETs) in helping to solve them. In reality, the communications requirements vary widely from one application to the next, in terms of range, latency, and connectivity together with vehicle and roadside hardware. Based on the nature of the wireless channel, this presents...
In this paper, the primary objective is to discuss the details of scalable methods for distributing certificate revocation lists and other large files using vehicle-to-vehicle and vehicle-to-infrastructure communications while taking advantage of the multi-channel operations in IEEE 1609.4. We also discuss the results from a simulation study using the ns-3 network simulator to closely replicate the...
The problem of key management in ad hoc networks was analyzed in this paper. Key management, however, can reveal information about the dynamics of ad hoc network membership, such as the group size and the number of joining and leaving users. Thus, only legitimate members have access to the messages. Once any member in the ad hoc network was going to join or leave the group, the group key would be...
A wireless mesh network (WMN) presents a new wireless network technology for building commercial mobile ad hoc networks. However, security in WMN has not received enough attention in the research community. One main challenge in designing WMNs is the vulnerability of such networks to malicious attacks. In this paper, we propose a zone-based distributed key management scheme for WMNs in which we show...
We developed a quality of service (QoS) management system to support service level management (SLM) for global enterprise services. The QoS management system is integrated with one of our enterprise services in a preproduction system, an identical system as the production system but in a test environment. Lab experiments showed that our integrated solution helps global enterprise services to better...
A principal factor in sensor network design is energy efficiency. In this work, we propose to extend the lifetime of sensor networks using appropriate choice of sensor node distribution. The key idea of our scheme is to deploy more nodes in areas of extensive energy usage. Using this scheme of sensor node distribution, we use probabilistic angular routing to route data packets from the sensor nodes...
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