scholarly journals Rapid Emergncy Message Dissemination Routing In Delay Tolerant Network

2019 ◽  
Vol 8 (10) ◽  
pp. 2056-2060
Keyword(s):  
Routing Protocol ◽  
Delay Tolerant Network ◽  
Communication Range ◽  
Emergency Rescue ◽  
Intermittent Connectivity ◽  
Message Dissemination ◽  
Delay Tolerant

In VANET, vehicles are move very fast as a consequence intermittent connectivity occurs frequently. In this delay-tolerant situation, the emergency rescue message broadcast is an extremely challenging task. The proposed routing protocol REMD give a solution to the problem. REMD follow the store carry forward method and flooding based message forwarding method. This paper expresses rapid emergency message dissemination routing in delay tolerant network called REMD Protocol. In this protocol, the source vehicle broadcast emergency message to the presented all neighbour vehicles in its communication range. The sender vehicle allocates message replicas and message time to live to the neighbour vehicles based on the corresponding vehicles credence value. Each vehicle credence value is calculated from their Visited Level Estimation (VLE) and Destination Reaches Level Estimation (DLE) values.

scholarly journals CHBR: Contact History Based Routing in Time Varying Approach

2014 ◽  
Vol 13 (2) ◽  
pp. 4237-4247 ◽  
Author(s):  
Pravesh S Patel ◽  
Hemal Shah ◽  
Yogeshwar Kosta
Keyword(s):  
Routing Protocol ◽  
Delay Tolerant Network ◽  
Delivery Ratio ◽  
Time Varying ◽  
Intermittent Connectivity ◽  
Real Trace ◽  
Synthetic Datasets ◽  
Delay Tolerant ◽  
Communication Path ◽  
Selection Of

In Delay tolerant network having intermittent connectivity so there is no guarantee of finding a complete communication path that connecting the source and destination. There no any end to end connectivity for delay-tolerant network selection of routing protocol is important to deliver the message in an efficient way and increases chance to deliver a message to the destination. Some existing routing protocols improve the delivery ratio but it also increases the overhead. Our paper proposed Contact History Based Routing (CHBR) that use Neighborhood Index and Time varying properties such as temporal distance, Temporal Diameter and centrality for benchmarking the existing routing protocol. First, temporal metrics are evaluated for synthetic and real trace data. Then CHBR protocol is compared with the Epidemic and PROPHET for delivery ratio, overhead and the number of messages dropped. This has been carried using Opportunistic Network Environment simulator under real and synthetic datasets.

scholarly journals UDTN-RS: A New Underwater Delay Tolerant Network Routing Protocol for Facilitating Coastal Patrol and Surveillance Networks

2020 ◽  
Author(s):  
Ahmed Ali Neffati ◽  
Saiful Azad ◽  
Mufti Mahmud ◽  
Suryanti Awang ◽  
Kamal Z. Zamli ◽  
...  
Keyword(s):  
Routing Protocol ◽  
Forward Error Correction ◽  
Network Routing ◽  
Delay Tolerant Network ◽  
Current Status ◽  
Surveillance Network ◽  
Suitable Alternative ◽  
Intermittent Connectivity ◽  
Correction Technique ◽  
Delay Tolerant

The Coastal Patrol and Surveillance Application (CPSA) is developed and deployed to detect, track and monitor water vessel traffic using automated devices. Latest advancements of marine technologies, including the Automatic Underwater Vehicles, have allowed the development of this type of applications. To facilitate their operations, installation of a Coastal Patrol and Surveillance Network (CPSN) is mandatory. One of the primary design objectives of this network is to deliver adequate amount of data within an effective time period. This is particularly essential for reporting a detection and notifying the current status of an intruder’s vessel through the adverse underwater communication channels. Additionally, intermittent connectivity of the nodes remain another important obstacle to overcome to allow smooth functioning of CPSA. Taking these objectives and obstacles into account, this work proposes a new protocol, named UDTN-RS, which is developed by ensembling forward error correction technique (namely Reed-Solomon codes or RS) in Underwater Delay Tolerant Network (UDTN) routing protocol with probabilistic spraying technique. In addition, the existing binary packet spraying technique is enhanced for supporting encoded packet exchange between the contacting nodes. A comprehensive simulation campaign is performed in identifying the effectiveness of the proposed protocol. The obtained results suggest that the proposed UDTN-RS protocol can be considered a suitable alternative of the existing protocols for sparse networks like CPSN.

scholarly journals An Optimized Probabilistic Delay Tolerant Network (DTN) Routing Protocol Based on Scheduling Mechanism for Internet of Things (IoT)

Sensors ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 243 ◽  
Author(s):  
Yuxin Mao ◽  
Chenqian Zhou ◽  
Yun Ling ◽  
Jaime Lloret
Keyword(s):  
Internet Of Things ◽  
Mobile Networks ◽  
Routing Protocol ◽  
Delay Tolerant Network ◽  
Iot Applications ◽  
Efficient Data ◽  
History Of ◽  
One Simulator ◽  
Key Aspects ◽  
Delay Tolerant

Many applications of Internet of Things (IoT) have been implemented based on unreliable wireless or mobile networks like the delay tolerant network (DTN). Therefore, it is an important issue for IoT applications to achieve efficient data transmission in DTN. In order to improve delivery rate and optimize delivery delay with low overhead in DTN for IoT applications, we propose a new routing protocol, called Scheduling-Probabilistic Routing Protocol using History of Encounters and Transitivity (PROPHET). In this protocol, we calculate the delivery predictability according to the encountering frequency among nodes. Two scheduling mechanisms are proposed to extend the traditional PROPHET protocol and improve performance in both storage and transmission in DTN. In order to evaluate the proposed routing protocol, we perform simulations and compare it with other routing protocols in an Opportunistic Network Environment (ONE) simulator. The results demonstrate that the proposed Scheduling-PROPHET can achieve better performances in several key aspects compared with the existing protocols.

Sign in / Sign up

Export Citation Format

Share Document