An Improved Video Packet Retry Adaptation in EDCA

EasyChair Preprint 8202

Abstract

Video transmission in wireless network is an important issue. One of the most important differences between video and ordinary data is emphasis on time and deadline so in video avoiding from delay and jitter is necessary because those causes uselessness of received data by receiver. Lossy nature of wireless networks causes requirement for retransmission of lost data thus retransmission management is very important because video data must be arrived on-time. Prior approaches in this issue mainly were based on 802.11 standard and would use statistical ways and statistical information collection for this purpose. We offer a method for retransmission of video packets on 802.11e WLANs and Enhanced Distributed Channel Access (EDCA) mechanism namely Retry Adaptation base-on Smoothed Playout Delay-base (RA-SPD). This method estimates deadline of video packets based on maximum playout delay in receiver and with regards to some effective parameters in deadline. This approach requires the knowledge of Datalink layer from Application layer so enumerate as a cross-layer approach. Results of simulations illustrate if setting of RA-SPD parameters be correct, improvement of received video quality at receiver without need of statistical information collection, in bad network condition is possible up to 4 percent rather than previous approaches and more than 10 percent rather than EDCA standard.

Keyphrases: Cross Layer Approaches, Deadline, EDCA, Retry Adaptation, Smoothed Playout Delay, video

@booklet{EasyChair:8202,
  author    = {Mehdi Gheisari},
  title     = {An Improved Video Packet Retry Adaptation in EDCA},
  howpublished = {EasyChair Preprint 8202},
  year      = {EasyChair, 2022}}