Izvorni znanstveni članak
https://doi.org/10.1080/00051144.2022.2095830
A context-aware improved POR protocol for Delay Tolerant networks
Allam Balaram
orcid.org/0000-0002-2312-2700
; Department of Information Technology, MLR Institute of Technology, Hyderabad, Telangana State, India
T. Sakthivel
; Director, Fristsoft Technologies Private Limited, Chennai, India
Radha Raman Chandan
; Department of Computer Science and Engineering, Shambhunath Group of Institutions, Prayagraj, India
Sažetak
The intermittent network connectivity and unawareness of global network knowledge are remarkable challenges when designing efficient Position-based Opportunistic Routing (POR) for Delay Tolerant Networks (DTNs). The best progress set selection of POR effectively handles the intermittent connectivity issue and improves the reliable performance of DTNs. Hence, the optimal progress set selection and catching capacity decide the routing reliability of DTN-POR. This paper proposes a context-aware DTN-POR protocol STAP to ensure reliable DTN routing with minimum overhead STAP design is divided into three folds: application diversity and network failures, context-aware best progress set selection, and enhanced caching management. The application diversity and network failure switch the nodes in harsh environments to DTN mode for transmitting the data packets successfully to the destination. Selecting context-aware relay nodes ensures highly successful data transmissions in the absence of end-to-end connectivity. The probability estimation maximizes the data reachability by considering unique node and application-level context attributes in the best progressive set. Finally, the enhanced catching management strategy limits the number of data copies with effective catch invalidation, resulting in minimum overhead. The proposed STAP accomplishes better results in different scenarios and improves the packet delivery ratio with a minimum duplication rate.
Ključne riječi
DTN; POR; context-aware best progress set selection; improved catching strategy; reliable data transmission
Hrčak ID:
287942
URI
Datum izdavanja:
7.9.2022.
Posjeta: 346 *