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Title: | A Lightweight ARQ Scheme to Minimize Communication Overhead |
Authors: | Haribabu, K |
Keywords: | Computer Science Transmission Control Protocol (TCP) Retransmission Overhead Intermediate Caching |
Issue Date: | 2019 |
Publisher: | IEEE |
Abstract: | Due to limited buffer space available at routers, the packets in the Internet gets lost or dropped, especially when the network is congested. Automatic repeat request (ARQ), is an error-control method that uses acknowledgments and timeouts to decide retransmission of messages to achieve reliable data transmission. However, the re-transmission of a lost packet further increases the congestion in the network, and hence the end-to-end delay of other coexisting flows. This paper aims at improving the performance of ARQ schemes by introducing a lightweight re-transmission mechanism called LW-ARQ based on the concept of caching of packets at intermediate routers that are indented to be dropped. To evaluate the performance of proposed LW-ARQ scheme, we chose to implement it over TCP protocol considering that TCP has become a de-facto transport layer protocol standard for the Internet. However, the proposed LW-ARQ scheme can be integrated with any protocol that uses either stop-and-wait or sliding window based ARQ scheme to handle packet losses. On analyzing the results obtained by performing simulations, we found that the proposed LW-ARQ scheme improves the average end-to-end delay performance of the TCP protocol. |
URI: | https://ieeexplore.ieee.org/document/8711199 http://dspace.bits-pilani.ac.in:8080/xmlui/handle/123456789/8245 |
Appears in Collections: | Department of Computer Science and Information Systems |
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