New Queue Management Scheme to Improve PiggyCode with Delayed-ACK Option
Eiji Takimoto, Shoichi Saito, Koichi Mouri · 2020
TCP communications on wireless multi-hop net-works are bi-directional communications using DATA packets and ACK packets. These properties increase the hidden node problem and the intra-flow interference. PiggyCode, which is an existing scheme focused on bi-directionality of DATA packets and ACK packets, reduces the number of transmissions by applying Network Coding to the DATA packets and ACK packets when relaying these packets. Although some studies have considered the improvement of PiggyCode by insertion of the wait time, they did not take the Delayed-ACK option into account. In this paper, we propose a novel queue management scheme to consider the Delayed-ACK option. Furthermore, we confirm the efficiency of the proposed method via experimental evaluations.