A Channel Access Protocol for Integrated Voice/Data Applications

Author

Lea, Chin-Tau ; Meditch, James S.

Author_Institution

Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

Volume

5

Issue

6

fYear

1987

fDate

7/1/1987 12:00:00 AM

Firstpage

939

Lastpage

947

Abstract

A new multiaccess protocol is proposed for an integrated voice/data application. The protocol, which is a variation of virtual time CSMA (VT-CSMA), takes advantage of the periodicity of voice packets and possesses a number of important features. With this protocol, voice stations appear to have a dedicated time-division multiplexed (TDM) slot, and the delay of a voice packet is bounded by the length of a frame (defined to be the period between two consecutive voice packets from a voice station). Also, the amount of data added to the channel has little effect on the voice traffic. When silence detection is used, many more voice conversations can be supported without losing the dedicated-slot characteristic. This is in contrast to a movingboundary TDM system where the excessive bandwidth saved by silence detection can only be used for data. The protocol requires no global synchronization and is easy to implement. Simulation results are presented to evaluate its performance.

Keywords

Carrier-sense multiaccess; Integrated voice/data communication; Protocols; Access protocols; Bandwidth; Character generation; Delay effects; Distributed processing; Ethernet networks; Local area networks; Multiaccess communication; Road accidents; Time division multiplexing;

fLanguage

English

Journal_Title

Selected Areas in Communications, IEEE Journal on

Publisher

ieee

ISSN

0733-8716

Type

jour

DOI

10.1109/JSAC.1987.1146619

Filename

1146619