Recently, location-based routings in wireless sensor networks (WSNs) are attracting a lot of interest in the research community, especially because of its scalability. In location-based routing, the network size is scalable without increasing the signalling overhead as routing decisions are inherently localized. Here, each node is aware of its position in the network through some positioning device like GPS and uses this information in the routing mechanism. In this paper, we first discuss the basics of WSNs including the architecture of the network, energy consumption for the components of a typical sensor node, and draw a detailed picture of classification of location-based routing protocols. Then, we present a systematic and comprehensive taxonomy of location-based routing protocols, mostly for sensor networks. All the schemes are subsequently discussed in depth. Finally, we conclude the paper with some insights on potential research directions for location-based routing in WSNs.
Abstract-Wireless sensor networks have been attracting a great attention due to their wide range of potential applications. However, due to various limitations arising from their inexpensive nature, limited size, weight and ad hoc method of deployment, the power consumption is one of the major constraints in sensor networks. Moreover, it is well known that packet communication dominates the power consumption in wireless sensor network. Therefore, it is very desirable to reduce the amount of packet transmission as much as possible. Network coding can achieve this by improving network throughput. Thus, recently researchers have been emphasizing on how wireless sensor networks can get benefits from network coding. AdapCode is one of the available works which apply the practical network coding to the wireless sensor networks. However, AdapCode has some limitations. It cannot find out all actual neighbour nodes which is critical in determining the new coding scheme. In this paper, thus, we enhance the AdapCode by deploying the power efficient neighbour discovery protocol to find out all the neighbours. Our objective is to develop a data dissemination protocol that promises the full advantage of network coding by deploying the power efficient neighbour discovery protocol.
Device-to-device (D2D) communications was proposed underlying cellular networks to increase system capacity to support high-data-rate multimedia services. However, D2D communications unavoidably bring along co-channel interference to conventional cellular users. In this paper, we propose interference-aware resource allocation (IARA) scheme for cellular networks with underlying D2D communications. The proposed IARA scheme is based on two-way channel gain estimations and interference level measurements. Related works are revisited and the proposed IARA scheme is discussed. Its performance is investigated through extensive computer simulations. IARA scheme outperforms random allocation (RA) scheme. We further propose to use adaptive transmission power for D2D users to protect cellular users from severe co-channel interference. Simulation results show that this allows for longer link distance for D2D users, leading to better resources reuse.
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