Energy efficient provisioning of P2P communications for mobile devicesDeokate, Balu Jagannath (Avtor) Trček, Denis (Mentor) Conti, Mauro (Komentor) peer-to-peer networkMANETsroutingenergy efficiencyoverlay networksNowadays, VoIP calls use fixed or mobile cellular networks. Recently, people started to use Internet-based social applications for communications on their mobile devices. These applications have become essential for exchanging information and for organizing different activities. It is convenient to access the Internet using cellular or WiFi network in urban areas. People from urban areas are using the Internet instead of a cellular network for the calling. However, the availability of network infrastructure is the main challenge at remote or rural locations. Also, there are several constraints on communication infrastructure due to natural disasters or political tensions. A fully decentralized P2P network over a MANET for communications is a viable option to overcome these threats. University campuses, railway stations, or farmers at remote locations can create a P2P network over MANET for communications. Peer-to-Peer (P2P) network is a self-organizing and decentralized network. P2P network applications can be deployed over Mobile Ad hoc Networks (MANETs) because both networks share a set of common characteristics such as dynamic topology, decentralized control, and self-organization. P2P networks can adapt to failures and accommodate transient populations of nodes while maintaining good connectivity and performance. MANET is more suitable for disaster management in remote areas. In P2P mobile networks, mobile nodes can form an overlay network on top of the underlying physical network and provide data sharing on the Internet. Although MANETs and P2P networks share similarities regarding dynamic topology and autonomy, it is challenging to implement P2P overlay routing over MANETs. The overlay network consists of logical links between nodes that are independent of an underlying network. The underlay network consists of physical links between nodes based on a network’s physical topology. P2P nodes do not consider underlay network topology to build their overlay routing table, which results in a mismatch between the P2P overlay nodes and underlay network nodes. The node mismatch problem generates a significant routing overhead that strongly affects the lifetime of resource-constraint mobile devices. Mobility creates communication overhead to maintain routing tables. Due to variable churn rates, a network should be resilient to propagate routing and topology updates. Each node in the P2P mobile network maintains two independent routing tables for an underlay network and overlay network. These independent routing tables increase communication overhead. The routing process plays a vital role in energy-efficient communications. The energy-efficient data communication prolongs the network lifetime. So, mobile nodes need energy-efficient routing protocols at network and overlay layers. Therefore, my research work aims to address the mobility and energy consumptionrelated challenges in P2P communications over resource-constrained devices. To this end, the contributions are three-fold. First, we provide a comprehensive analysis of the state-of-the-art popular routing protocols in different P2P networking scenarios to evaluate their default ability to handle the mobility and energy consumption issues. Based on this evaluation, we identify the best-suited routing protocol and improve it. Second, to improve the routing performance and address a mobility issue in P2P networks, we propose MACARON as a novel Mobility-aware Cross-layer Routing approach for P2P networks over MANET. MACARON provides the guarantee on routing state and path stretch bound. It does not use the DHT-based design or landmarkbased location directories for creating an overlay network. Instead, it uses an unstructured name-locator-based overlay over MANET. MACARON provides scalability by using location-independent routing. It handles fast mobility by using the Last Encounter Routing (LER) protocol for underlying routing. The simulation results show that MACARON provides guaranteed routes with low path stretch O(1) by maintaining O(n) routing entries per node, where n is the size of the network. Third, to provide energy-efficient routing, we propose a novel energy-aware routing for peer-to-peer networks (EAR-P2PN). EAR-P2PN helps to improve the network lifetime by using energy-efficient routes for communications. An energy consumption model helps to estimate the residual energy of mobile nodes. The energy-aware routing approach considers different performance parameters for evaluation. EAR-P2PN shows performance improvement over state-of-the-art protocols.20222022-11-11 14:55:00Doktorsko delo/naloga142498VisID: 19721COBISS_ID: 131581955sl