Abstract
This paper proposes a data delivery method based on neighbor nodes' information to achieve reliable communication in a mobile ad hoc network (MANET). In a MANET, it is difficult to deliver data reliably due to instabilities in network topology and wireless network condition which result from node movement. To overcome such unstable communication, opportunistic routing and network coding schemes have lately attracted considerable attention. Although an existing method that employs such schemes, MAC-independent opportunistic routing and encoding (MORE), Chachulski et al. (2007), improves the efficiency of data delivery in an unstable wireless mesh network, it does not address node movement. To efficiently deliver data in a MANET, the method proposed in this paper thus first employs the same opportunistic routing and network coding used in MORE and also uses the location information and transmission probabilities of neighbor nodes to adapt to changeable network topology and wireless network condition. The simulation experiments showed that the proposed method can achieve efficient data delivery with low network load when the movement speed is relatively slow.
Highlights
Despite their widespread use, smart mobile devices (SMDs) still carry out communications only through existing wireless infrastructures, such as base stations
We proposed a data delivery method based on the neighbor nodes (NNs)’ information in a mobile ad hoc network (MANET)
In the proposed method, all of the nodes can hold the latest NNs’ information within two hops by updating periodically, and a packet can be forwarded by relay nodes (RNs) that are appropriately selected based on the NNs’ information hop-by-hop
Summary
Smart mobile devices (SMDs) still carry out communications only through existing wireless infrastructures, such as base stations. To improve data delivery over an unstable wireless network, Biswas and Morris [2] proposed opportunistic routing, which uses packet distribution via wireless broadcast. In this approach, multiple neighbor nodes (NNs) simultaneously receive a packet transmitted by a sender, and they help to forward the packet to increase throughput. To improve reliable communication in a MANET, we propose a data delivery method that employs opportunistic routing, network coding, and information about NNs. Opportunistic routing and network coding technologies are the same as those in MORE, since we use MORE as a base system.
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