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This paper investigates the use of ultra-wideband (UWB) radio for communication in industrial wireless sensor networks (WSNs). OpenWSN is an open-source IPv6 mesh network protocol stack based on IEEE 802.15.4 time slotted channel hopping (TSCH). We adapted OpenWSN to operate an UWB physical layer based on the DecaWave DW1000 UWB transceiver. Experiments were conducted in an industrial steam heating...
The traditional Kerberos protocol exists some limitations in achieving clock synchronization and storing key, meanwhile, it is vulnerable from password guessing attack and attacks caused by malicious software. In this paper, a new authentication scheme is proposed for wireless mesh network. By utilizing public key encryption techniques, the security of the proposed scheme is enhanced. Besides, timestamp...
Drive-thru Internet is a promising technique that exploits the inter-connected roadside access points (APs) to offer Internet access. However, there will be very high costs to deploy and maintain a large number of APs to provide ubiquitous coverage. There are many studies on vehicle-to-vehicle (V2V) relay to further improve the performance of the drive-thru Internet system. In this paper, we investigate...
To stay on the cutting edge, Web services ought to adapt themselves to the evolving business requirements and the changing environments. For a long-running service choreography, its member services may need to evolve even at run-time. However, inconsistencies or spurious results (e.g., unspecified receptions and deadlocks) may occur if these services evolve dynamically in an uncoordinated manner....
Pooling mobile nodes in vicinity as a collaborative community offers an opportunity for multi-homed mobile nodes to enable multipath transmission even when there is no multiple access coverage. However, packet collisions exist within the collaborative community when a contention-based channel access such as IEEE 802.11 is applied. As a result, the overall multipath performance may degrade if a regular...
In this paper, we investigate a novel cooperative relay network over Rayleigh flat fading channel. It focus of single-relays equipped by two transmit antennas with the modulate-and-forward protocol, which corresponds to distributed implementations of MIMO system. For each relay node, the received signals are modulated via the sub-matrices of Jacket matrix and forwarded to destination node. We obtain...
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