Abstract
A system data sharing protocol of mobile WSN named synchronous dynamic multihop data sharing protocol (S-DMDS) is presented for automated guided vehicle (AGV) system. It is a cross-layer protocol designed from route layer to MAC layer. By adopting a concept of system data sharing, it is possible to make each node exchange the data timely with all the other nodes. It is also a topology-agnostic protocol which has no knowledge of neighbors, routes, or next hops. From the results of the 16-nodes simulation, S-DMDS protocol is proved to be efficient exchange data timely between the devices of AGV system in mobile multihop situation. Moreover, it also shows that S-DMDS significantly outperforms NST-AODV with investing about 41.6% system sharing delay as well as 80% RAM consumption. At last, 5-node experiment indicates that S-DMDS can work well in real environment.
Highlights
In recent years, wireless sensor networks (WSNs) technology becomes an emerging field in a wide range of applications such as industrial environment [1]
IEEE802.15.4 does not have a good performance when it is applied to a multi-hop mesh network, it supplies for such a function
It needs a mobile multi-hop data sharing WSN shown as Figure 1, which is not a conventional transmission style that is from source node to destination node
Summary
Wireless sensor networks (WSNs) technology becomes an emerging field in a wide range of applications such as industrial environment [1]. Solutions based on the work of the IEEE 802.15.4 group, like WirelessHART and ISA SP100, have been presented, but devoted to process control [8] They are able to manage very large mesh network but overall “information rate” is low within 1 node/s or less. Every node maintains route entries with forward and backward hop information that expires after a specified time if the path becomes inactive (i.e., it is not used for data transmission). Since AGV system requires each device should obtain the information of all the other devices in time It needs a mobile multi-hop data sharing WSN shown as Figure 1, which is not a conventional transmission style that is from source node to destination node. S-DMDS protocol is proposed to provide multi-hop data sharing communication between mobile AGV nodes with reasonable low cost.
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