Combined Random/Reservation Access for Packet Switched Transmission Over a Satellite with On-Board Processing: Part I--Global Beam Satellite

Author

Lee, Hyong W. ; Mark, Jon W.

Author_Institution

University of Waterloo, Waterloo, Ont., Canada

Volume

31

Issue

10

fYear

1983

fDate

10/1/1983 12:00:00 AM

Firstpage

1161

Lastpage

1171

Abstract

A combined random/reservation multiple access (CRRMA) scheme for packet-switched communication over a global beam satellite with on-board processing is proposed and analyzed. Channel time is divided into contiguous slots; each slot contains $N$ minislots for transmission of request packets and $N\´$ minislots for data. With $N$ substantially smaller than the number of earth stations, collisions will occur in request packet transmissions. Two channel access algorithms for the CRRMA model are proposed: uncontrolled channel access (UCA) and controlled channel access (CCA). UCA is simpler but has an inherent stability problem particularly when the number of minislots $N$ is small. The CCA algorithm restricts the transmission of request packets for new arrivals to take place only when the slot is in the FREE state. With $N = 3$ , the CCA algorithm exhibits good delay-throughput characteristics. As $N$ increases, the UCA algorithm offers stable operation. For $N \\geq 5$ the simpler UCA algorithm is preferred over CCA.

Keywords

Packet switching; Satellite communication, multiaccess; Artificial satellites; Channel capacity; Communication networks; Communication switching; Computer networks; Packet switching; Propagation delay; Satellite ground stations; Stability; Throughput;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOM.1983.1095742

Filename

1095742