scholarly journals Reliable Flying IoT Networks for UAV Disaster Rescue Operations

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Taemin Ahn ◽  
Jihoon Seok ◽  
Inbok Lee ◽  
Junghee Han
Keyword(s):  
Ad Hoc Network ◽  
High Performance ◽  
Ad Hoc ◽  
Communication Protocol ◽  
Mobile Sensors ◽  
Simulation Platform ◽  
Packet Delivery ◽  
Environment Simulation ◽  
Mission Critical ◽  
And Performance

Recently, UAVs (unmanned air vehicles) have been developed with high performance, and hence, the range of system utilizing UAVs has also been widening. UAVs are even considered as connected mobile sensors and are claimed to be the future of IoT (Internet of Things). UAVs’ mission fulfillment is relying on the efficiency and performance of communication in a FANET (Flying Ad hoc NETwork) environment where UAVs communicate with each other through an ad hoc network without infrastructure. Especially, for mission-critical applications such as disaster rescue operations, reliable and on-time transmission of rescue information is very critical. To develop the reliable FANETs, a realistic network simulation platform for UAV communication has become an important role. Motivated by this observation, this paper first presents a study on realistic FANET environment simulation platform. On top of the proposed platform, we also design a stable UAV communication protocol with high packet delivery and bounded end-to-end communication delay.

Comparison of Packet Delivery Fraction of On-demand Routing Protocol based on different Terrain-Area in MANET

2017 ◽  
Vol MCSP2017 (01) ◽  
pp. 38-41
Author(s):  
Hari Shankar Sahu ◽  
Rupanita Das
Keyword(s):  
Wireless Network ◽  
Routing Protocol ◽  
Rapid Growth ◽  
Ad Hoc Network ◽  
Ad Hoc ◽  
Wireless Ad Hoc Network ◽  
Packet Delivery ◽  
On Demand ◽  
Telecommunication Technology ◽  
Demand Routing

Now a days telecommunication technology leads to a rapid growth of number of users, these number of users nothing but number of nodes in MANET.A wireless ad hoc network is a decentralized type of wireless network. The mobility of nodes effect on the performance of the network. Due to mobility of nodes the link breaks number of times which effect on the packet delivery. Therefore to analyze the performance, packet delivery fraction (PDF)can be used. This paper describe the packet delivery fraction of on demand routing protocol AODV and DSR on different terrain areas using GLOMOSIM.

scholarly journals Using Aerial and Vehicular NFV Infrastructures to Agilely Create Vertical Services

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1342
Author(s):  
Borja Nogales ◽  
Miguel Silva ◽  
Ivan Vidal ◽  
Miguel Luís ◽  
Francisco Valera ◽  
...  
Keyword(s):  
Ad Hoc Network ◽  
Ad Hoc ◽  
Cost Effective ◽  
Network Services ◽  
Network Function Virtualization ◽  
Mobile Environments ◽  
Network Resources ◽  
The Public ◽  
Network Function ◽  
And Performance

5G communications have become an enabler for the creation of new and more complex networking scenarios, bringing together different vertical ecosystems. Such behavior has been fostered by the network function virtualization (NFV) concept, where the orchestration and virtualization capabilities allow the possibility of dynamically supplying network resources according to its needs. Nevertheless, the integration and performance of heterogeneous network environments, each one supported by a different provider, and with specific characteristics and requirements, in a single NFV framework is not straightforward. In this work we propose an NFV-based framework capable of supporting the flexible, cost-effective deployment of vertical services, through the integration of two distinguished mobile environments and their networks: small sized unmanned aerial vehicles (SUAVs), supporting a flying ad hoc network (FANET) and vehicles, promoting a vehicular ad hoc network (VANET). In this context, a use case involving the public safety vertical will be used as an illustrative example to showcase the potential of this framework. This work also includes the technical implementation details of the framework proposed, allowing to analyse and discuss the delays on the network services deployment process. The results show that the deployment times can be significantly reduced through a distributed VNF configuration function based on the publish–subscribe model.

An Efficient and Stable Routing Algorithm in Mobile Ad Hoc Network

2021 ◽  
Vol 13 (04) ◽  
pp. 21-37
Author(s):  
Priyanka Pandey ◽  
Raghuraj Singh
Keyword(s):  
Ad Hoc Network ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Residual Energy ◽  
Packet Delivery ◽  
Control Message ◽  
Mobile Ad Hoc ◽  
And Control ◽  
Route Request ◽  
Message Overhead

Mobile Ad hoc Network (MANET) is mainly designed to set up communication among devices in infrastructure-less wireless communication network. Routing in this kind of communication network is highly affected by its restricted characteristics such as frequent topological changes and limited battery power. Several research works have been carried out to improve routing performance in MANET. However, the overall performance enhancement in terms of packet delivery, delay and control message overhead is still not come into the wrapping up. In order to overcome the addressed issues, an Efficient and Stable-AODV (EFST-AODV) routing scheme has been proposed which is an improvement over AODV to establish a better quality route between source and destination. In this method, we have modified the route request and route reply phase. During the route request phase, cost metric of a route is calculated on the basis of parameters such as residual energy, delay and distance. In a route reply phase, average residual energy and average delay of overall path is calculated and the data forwarding decision is taken at the source node accordingly. Simulation outcomes reveal that the proposed approach gives better results in terms of packet delivery ratio, delay, throughput, normalized routing load and control message overhead as compared to AODV.

scholarly journals Enhancing Reactive Ad Hoc Routing Protocols with Trust

2022 ◽  
Vol 14 (1) ◽  
pp. 28
Author(s):  
Yelena Trofimova ◽  
Pavel Tvrdík
Keyword(s):  
Wireless Ad Hoc Networks ◽  
Routing Protocols ◽  
Ad Hoc Network ◽  
Ad Hoc ◽  
Sensor Nodes ◽  
Delivery Ratio ◽  
Ad Hoc Routing ◽  
Trust Mechanism ◽  
Packet Delivery ◽  
Hoc Networks

In wireless ad hoc networks, security and communication challenges are frequently addressed by deploying a trust mechanism. A number of approaches for evaluating trust of ad hoc network nodes have been proposed, including the one that uses neural networks. We proposed to use packet delivery ratios as input to the neural network. In this article, we present a new method, called TARA (Trust-Aware Reactive Ad Hoc routing), to incorporate node trusts into reactive ad hoc routing protocols. The novelty of the TARA method is that it does not require changes to the routing protocol itself. Instead, it influences the routing choice from outside by delaying the route request messages of untrusted nodes. The performance of the method was evaluated on the use case of sensor nodes sending data to a sink node. The experiments showed that the method improves the packet delivery ratio in the network by about 70%. Performance analysis of the TARA method provided recommendations for its application in a particular ad hoc network.

Re-Broadcast AODV(reAODV) Based Routing Protocol Modification Over AODV for VANET In City Scenario

2018 ◽  
Vol 9 (1) ◽  
pp. 51-65
Author(s):  
Soumen Saha ◽  
Utpal Roy ◽  
D.D. Sinha
Keyword(s):  
Routing Protocol ◽  
Ad Hoc Network ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Routing Algorithm ◽  
Routing Algorithms ◽  
Original Algorithm ◽  
Packet Delivery ◽  
Packet Header ◽  
Hoc Networks

Vehicular ad-hoc networks or VANETs are a new method of training an ad-hoc network in traffic. The authors have numbers of routing algorithms on a MANET. But none of them works efficiently in a VANET with respect to being a safe and secure transport system. The authors have proposed a modification on an AODV routing algorithm for VANET with the introduction of the double-ended queue or dqAODV in a request packet header. A comparable good result was found in the throughput. In the present work, the authors introduce a modification of an original AODV by applying a partial re-broadcast of the request packet (RREQ) of an AODV. They found a comparable result in the throughput of the packet delivery aspect for this work with the original algorithm and dqAODV. This is compared to the complexity in the original AODV algorithm.

Study on a Novel GIS-Based Routing Strategy

2014 ◽  
Vol 644-650 ◽  
pp. 2969-2972
Author(s):  
Yue Wei Wang ◽  
Ding Yi Ji
Keyword(s):  
Routing Protocols ◽  
Ad Hoc Network ◽  
Ad Hoc ◽  
High Mobility ◽  
Delivery Ratio ◽  
Scenario Simulation ◽  
Packet Delivery ◽  
Routing Strategy ◽  
Topology Changes ◽  
The City

Given a scenario of Vehicle Ad hoc Network (VANET), this paper presented a GIS-Based routing (GBR) strategy to resolve frequent reconstruction caused by rapid topology changes. Due to the use of road information based on GIS, the protocol can evade permanent or temporary topology holes respectively which frequently occurred in the city scenario. Simulation results showed new routing protocols could achieve better performance in packet delivery ratio and proved GBR’s lower routing overhead, as well as it is better performances in high mobility, compared with DSR in urban vehicle environment.

A Novel DSR-Based Protocol for Small Reconnaissance UAV Ad Hoc Network

2014 ◽  
Vol 568-570 ◽  
pp. 1272-1277 ◽  
Author(s):  
Juan Li ◽  
Xiao Cheng Liu ◽  
Yue Feng Pang ◽  
Wei Wei Zhu
Keyword(s):  
Network Lifetime ◽  
Routing Protocol ◽  
Routing Protocols ◽  
Ad Hoc Network ◽  
Ad Hoc ◽  
Energy Balancing ◽  
Packet Delivery ◽  
Source Routing ◽  
Dynamic Source ◽  
Short Network

Based on the traditional DSR Protocol has obvious drawbacks such as short network lifetime in the small reconnaissance UAV ad hoc network, a routing protocols called UEDSR(UAV Energy Dynamic Source Routing Protocol) suitable for small reconnaissance UAV ad hoc network is proposed. This protocol introduces the energy balancing mechanism into the algorithms based on DSR, then improves the situation of excessive energy consumption of hot nodes and prolongs the network lifetime. The simulation of protocol by NS2 illustrates that comparing to DSR the UEDSR protocol achieves about 7% increase in the network lifetime and the packet delivery and the average of network throughput are effectively improved.

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