A robust real-time message scheduling scheme capable of handling channel errors in wireless local area networks

Authors:
Junghoon Lee;Mikyung Kang;Gyung-Leen Park;In-Hye Shin;Hanil Kim;Sang-Wook Kim
Affiliations:
Dept. of Computer Science and Statistics, Cheju National University;Information Sciences Institute East, University of Southern California;Dept. of Computer Science and Statistics, Cheju National University;Dept. of Computer Science and Statistics, Cheju National University;Dept. of Computer Science and Statistics, Cheju National University;College of Information and Communications, Hanyang University
Venue:
ICCSA'07 Proceedings of the 2007 international conference on Computational science and its applications - Volume Part III
Year:
2007

Citing 11
Cited 0

A unified wireless LAN architecture for real-time and non-real-time communication services

IEEE/ACM Transactions on Networking (TON)
An Implicit Prioritized Access Protocol for Wireless Sensor Networks

RTSS '02 Proceedings of the 23rd IEEE Real-Time Systems Symposium
The design of an acquisitional query processor for sensor networks

Proceedings of the 2003 ACM SIGMOD international conference on Management of data
Fair Real-Time Traffic Scheduling over a Wireless LAN

RTSS '01 Proceedings of the 22nd IEEE Real-Time Systems Symposium
Contention-Free Periodic Message Scheduler Medium Access Control in Wireless Sensor / Actuator Networks

RTSS '03 Proceedings of the 24th IEEE International Real-Time Systems Symposium
Scheduling Communication in Real-Time Sensor Applications

RTAS '04 Proceedings of the 10th IEEE Real-Time and Embedded Technology and Applications Symposium
Dynamic bandwidth management in single-hop ad hoc wireless networks

Mobile Networks and Applications
Distributed Fair Scheduling in a Wireless LAN

IEEE Transactions on Mobile Computing
A real-time message scheduling scheme based on optimal earliest deadline first policy for dual channel wireless networks

EUC'06 Proceedings of the 2006 international conference on Embedded and Ubiquitous Computing
Design of a hard real-time guarantee scheme for dual ad hoc mode IEEE 802.11 WLANs

ADHOC-NOW'05 Proceedings of the 4th international conference on Ad-Hoc, Mobile, and Wireless Networks
Scheduling algorithms for multiple channel wireless local area networks

Computer Communications

Quantified Score

Hi-index	0.00

Visualization

Abstract

This paper proposes and analyzes the performance of a robust real-time message scheduling scheme capable of handling channel errors by exploiting an auxiliary schedule on the IEEE 802.11WLAN. While the primary schedule is derived from the legacy EDF (Earliest Deadline First) scheme, the auxiliary schedule is generated based on the slack and arrival times of each message stream. During runtime, with the support of a channel probing functionality, the access point dynamically switches the two polling schedules according to the channel status, giving a temporaily unreachable stream more chances to meet its time constraints. Simulation results show that the proposed scheme improves the success ratio by up to 8.56 % and performs well even if the length of error duration gets larger, demonstrating that it is also robust to the bursty errors.