An adaptive MAC layer protocol for ATM-based LEO satellite networks

Author

Emmelmann, Marc ; Bischl, Hermann

Author_Institution

Competence Center for Adv. Network Technol., Fraunhofer-Inst. FOKUS, Berlin, Germany

Volume

4

fYear

2003

fDate

6-9 Oct. 2003

Firstpage

2698

Abstract

German aerospace center (DLR), Fraunhofer FOKUS.cats, and Tesat-Spacecom have designed a future multimedia ATM-based LEO satellite network. Part of the development was an adaptive MAC and FEC scheme which is presented in this paper. The FEC implementation switches on the fly during a connection between several FEC and modulation modes to guarantee a maximum ATM cell error rate of 10^-6. In order to prevent influences of the changing FEC scheme on the user-level data rate, the MAC dynamically changes its packet lengths. Additionally, to minimize contention on the up-link, the MAC structures its TDMA frame into a fixed assigned part and a contention specific part. The boarder in between the two is dynamically altered according to the current link utilization.

Keywords

access protocols; aerospace; asynchronous transfer mode; error statistics; forward error correction; multimedia communication; packet switching; satellite communication; telecommunication links; time division multiple access; ATM cell error rate; ATM-based LEO satellite networks; FEC scheme; Fraunhofer FOKUS.cats; German aerospace center; TDMA frame; Tesat-Spacecom; adaptive MAC layer protocol; link utilization; modulation modes; multimedia network; packet lengths; Artificial satellites; Asynchronous transfer mode; Digital video broadcasting; Error analysis; Forward error correction; Low earth orbit satellites; Media Access Protocol; Quality of service; Rain; Satellite broadcasting;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th

ISSN

1090-3038

Print_ISBN

0-7803-7954-3

Type

conf

DOI

10.1109/VETECF.2003.1286054

Filename

1286054