An Efficient Network Coding based Retransmission Algorithm for Wireless Multicasts

TL;DR

This paper introduces a network coding-based retransmission algorithm designed to improve latency and bandwidth efficiency for wireless multicast networks, addressing the lack of reliable MAC-level recovery in existing standards.

Contribution

It proposes a novel coding algorithm that enhances retransmission efficiency in wireless multicasts, outperforming previous network coding approaches.

Findings

Reduced retransmission latency

Improved bandwidth utilization

Enhanced reliability in multicast retransmissions

Abstract

Retransmission based on packet acknowledgement (ACK/NAK) is a fundamental error control technique employed in IEEE 802.11-2007 unicast network. However the 802.11-2007 standard falls short of proposing a reliable MAC-level recovery protocol for multicast frames. In this paper we propose a latency and bandwidth efficient coding algorithm based on the principles of network coding for retransmitting lost packets in a singlehop wireless multicast network and demonstrate its effectiveness over previously proposed network coding based retransmission algorithms.