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Sensor devices have been widely applied to variety applications, including internet of things (IoT), cyber physical systems (CPS) and environmental monitoring systems. Because all sensing data in such applications are very important for data analysis and mining in a host machine, sensor devices are equipped with non-volatile memory (NVM) [1] and nonvolatile processor [2], [3] to prevent sensing data...
In a wireless sensor network (WSN), retransmission and acknowledgement (ACK) are required to make reliable packet delivery. In this paper, a Network Coding based Power Efficient Routing (NCPER) algorithm integrated with multi-path routing algorithms is proposed to eliminate retransmission and ACK, which guarantees that the receiving node can decode the original data sent by a source node so that the...
The lifetime of wireless sensor networks are constrained by its limited battery capacity. Therefore, the lifetime is widely regard as a bottleneck of technique of wireless sensor network. Recently, the emerging breakthrough in wireless power transfer technique is expected to eliminate the power constraint bottleneck. In this paper, we propose an intelligent wireless charging vehicle (IWCV) strategy...
In GPSR, forwarding node uses greedy forwarding strategy (GFS) to select next hop locally among the one-hop neighbors, which is geographically closest to the destination. But in mobile scenery, GFS causes temporary communication blindness (TCB) problem because of periodic beacon exchange regardless of network mobility. To address the problem, we make an improvement using buffer zone based greedy forwarding...
Nodes in a Wireless Sensor Network (WSN) are usually powered by battery. In a WSN with multi-hop communications, some routing algorithms place heavy burden of forwarding packets on nodes close to a base station, causing these nodes to drain more battery energy and die earlier than others so that lifetime of the WSN is shortened. To solve the un even energy expenditure among nodes, we present a novel...
Considering that travel routing costs change with time against the background of reverse logistics, this paper presents the time dependent vehicle routing problem of simultaneous delivery and pick-up (TD-VRPSDP), and establishes the mixed integer programming model of TD-VRPSDP. The pheromone updating strategy based on rank-based ant colony system and max-min ant system algorithm are used for solving...
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