Soft Real-Time Chains for Multi-Hop Wireless Ad-Hoc Networks

Author

Bui, Bach D. ; Pellizzoni, Rodolfo ; Caccamo, Marco ; Cheah, Chin F. ; Tzakis, Andrew

Author_Institution

Dept. of Comput. Sci., Illinois Univ., Urbana, IL

fYear

2007

fDate

3-6 April 2007

Firstpage

69

Lastpage

80

Abstract

Prioritized MAC protocols are needed to support soft real-time communication in wireless networks. In this paper, we introduce real-time chain, a new prioritized MAC protocol to support soft real-time data flows in multi-hop wireless ad-hoc networks. By avoiding packet collisions and limiting the effect of priority inversions, real-time chain is able to provide soft real-time and bandwidth guarantees. Furthermore, the use of multiple channels enables high spatial reuse and transmission rates. Finally, our approach can be integrated with a slightly modified version of the IEEE 802.15.4 standard. The protocol has been fully implemented on Crossbow MICAz hardware and its performance has been validated with a large set of both indoor and outdoor experiments

Keywords

access protocols; ad hoc networks; personal area networks; Crossbow MICAz hardware; IEEE 802.15.4 standard; MAC protocols; multi-hop wireless ad-hoc networks; soft real-time chains; Ad hoc networks; Bandwidth; Control systems; Media Access Protocol; Monitoring; Spread spectrum communication; Streaming media; Surveillance; Wireless application protocol; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Real Time and Embedded Technology and Applications Symposium, 2007. RTAS '07. 13th IEEE

Conference_Location

Bellevue, WA

ISSN

1080-1812

Print_ISBN

0-7695-2800-7

Type

conf

DOI

10.1109/RTAS.2007.34

Filename

4155311