Improving simultaneous voice and data performance in Bluetooth systems

Author

Famolari, David ; Anjum, Farooq

Author_Institution

Telcordia Technol., USA

Volume

2

fYear

2002

fDate

17-21 Nov. 2002

Firstpage

1810

Abstract

In the Bluetooth system, isochronous applications, such as voice and audio, are carried by synchronous connection oriented (SCO) links. SCO packets are regularly scheduled every two, four, or six time slots and enjoy preemptive priority over data-bearing asynchronous connection-less (ACL) packets. The residual bandwidth available to simultaneous data services is often insufficient for many types of applications, even under perfect channel conditions. We introduce a novel methodology where isochronous audio traffic is carried over ACL links to obtain higher simultaneous data throughputs while strictly adhering to the 64 Kbps isochronous service quality guaranteed by SCO links. Simulation results are presented for a variety of channel conditions verifying that this technique improves both the throughput for data services and the quality of voice services.

Keywords

Bluetooth; integrated voice/data communication; packet radio networks; quality of service; telecommunication channels; 64 Kbit/s; ACL links; Bluetooth systems; SCO packets; asynchronous connection-less packets; isochronous applications; isochronous audio traffic; preemptive priority; quality of service; simultaneous voice/data services; synchronous connection oriented links; Bandwidth; Baseband; Bluetooth; Frequency; Local area networks; Master-slave; Scheduling; Streaming media; Telephony; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE

Print_ISBN

0-7803-7632-3

Type

conf

DOI

10.1109/GLOCOM.2002.1188511

Filename

1188511