http://localhost:80/xmlui/handle/123456789/8561 2026-04-25T18:48:54Z 2026-04-25T18:48:54Z Das, Nabanita Basu, Souvik Das Bit, Sipra http://localhost:80/xmlui/handle/123456789/10947 2026-04-10T06:59:03Z 2024-06-28T00:00:00Z

Title: Incentive minimization using energy and buffer efficient routing protocol over Blockchain enabled DTN Authors: Das, Nabanita; Basu, Souvik; Das Bit, Sipra Abstract: Delay tolerant networks (DTNs) are a kind of sporadically connected mobile networks in which the network is intermittent, and end-to-end path is hard to establish. However, as devices in DTNs may often have limited energy and buffer, the network performance will be inevitably affected, especially in our application domain, i.e. the post-disaster scenario. Thus, to start with, we present an appropriate energy and buffer efficient routing protocol (EBRout) for efficient message transmission over a smartphone based DTN. Due to limited battery and storage capacity in mobile devices, a major problem in DTNs is to convince forwarder nodes to participate in forwarding messages. Thus, for improving cooperation among the nodes, an incentivizing scheme is proposed which works in two steps. As the first step, we propose an optimization model to find the minimum incentive. Next, we propose a blockchain-based incentive allocation model that uses Ethereum platform built on top of a DTN-Blockchain integrated environment. The use of blockchain helps to create an immutable and globally accessible record for incentive allocation. The performance of the entire scheme is estimated through extensive simulation in ONE simulator, Python PuLP and Ethereum platform. Performance analyses indicate that the average incentive paid using our proposed optimization model is much lower than the average incentive paid without using the optimization model. Also, the results substantiate the efficiency of the proposed scheme over the competing schemes, in terms of delivery ratio, energy and message overhead without negotiating the blockchain performance in terms of processing time and gas consumption.

2024-06-28T00:00:00Z Das, Nabanita Basu, Souvik Das Bit, Sipra http://localhost:80/xmlui/handle/123456789/10946 2026-04-10T06:51:39Z 2023-01-23T00:00:00Z

Title: OlaRout: Optimal dropbox deployment based cluster routing for post disaster information exchange in a smart city Authors: Das, Nabanita; Basu, Souvik; Das Bit, Sipra Abstract: With the recent endeavour of smart city mission, it is being planned to install sophisticated infrastructure for providing various smart services. But the planning to handle unwanted events like disaster has not received much attention as part of this endeavour. In a post-disaster scenario, one of the most important services is to disseminate crucial situational information among different stakeholders when the traditional communication infrastructure becomes non-functional. The smart phone based delay tolerant network (DTN) shows its useful applicability in such a scenario. Further, it is well established that due to the movement pattern of the stakeholders with handheld device, it typically forms clusters based on their work areas. However, the existing DTN routing protocols are not designed for cluster architecture. This motivates us to propose a cluster routing considering a utility based optimal dropbox (DB) deployment that assists in providing improved network performance. In this paper, we primarily consider that DBs are deployed at strategic locations of the disaster affected area using an existing utility based dropbox deployment. Then we propose a mixed integer linear programming based optimization model, to enumerate the optimal number of dropboxes to be deployed at high utility locations. We finally propose a cluster based routing with a target to improve network performance. We evaluate the comparative performance of our proposed optimal DB deployment based cluster routing through both theoretical analysis and simulation. Exhaustive simulation is carried out in ONE simulator using real disaster data. Results show our scheme’s dominance over the competing schemes.

2023-01-23T00:00:00Z Basu, Souvik Chowdhury, Soumyadip Bit, Sipra Das http://localhost:80/xmlui/handle/123456789/7415 2023-11-01T07:20:56Z 2021-01-01T00:00:00Z

Title: Using Blockchain In Intermittently Connected Network Environments Authors: Basu, Souvik; Chowdhury, Soumyadip; Bit, Sipra Das Abstract: This chapter explores the possible integration of blockchain technology with intermittently connected networks, towards exploiting the utility and availability ot blockchain technology in intermittently connected network environments. It also identifies the challenges of such integration and possible solutions using off-the-shelf technology. Finally, thc chapter identifies open research areas in the domain ol using blockchain in intermittently connected network environments that would foster new research avenues in both industry and academia.

2021-01-01T00:00:00Z Basu, Souvik Roy, Siuli Das Bit, Sipra http://localhost:80/xmlui/handle/123456789/4850 2023-11-01T07:18:50Z 2019-01-01T00:00:00Z

Title: Reliable Post Disaster Services over Smartphone Based DTN : An End-to-End Framework Authors: Basu, Souvik; Roy, Siuli; Das Bit, Sipra

2019-01-01T00:00:00Z