Multi AP Strategies for SCO Traffic in a Bluetooth based Wireless LAN

• We consider a Wireless Local Area Network (WLAN) consisting of Bluetooth Access Points (APs). Thus, it inherently offers both ad-hoc voice and data connectivity. As Bluetooth supports Synchronous Circuit-Oriented (SCO) traffic, the concept under study features a low-cost alternative to indoor cellular base stations. Due to the limitation of only three available SCO channels per AP, several APs can be placed in the same coverage area to satisfy voice traffic demands in hot spots. Such AP clusters will be denoted as Multi AP. Three Multi AP strategies for handling the SCO allocation are presented and discussed in terms of signaling and mean time to connect. Our findings show that employing Multi APs significantly reduces the blocking probability. A simple dimensioning rule for the number of APs is given.

• Flera Bluetooth enheter i en accesspunkt ger mögligheten att köra flera samtal plus datatrafik samtidigt. Pappret diskuterar olika strategier hur man lägger ut samtal (dvs SCO trafik) på de olika Bluetooth enheter. Bluetooth, Blåtand, accesspunkt, SCO trafik, spärrsannolikhet, dimensionering, signalering, prestanda

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)

Nyckelord

Wireless LAN

Bluetooth access point

synchronous circuit-oriented traffic

SCO traffic

Erlang loss model

blocking probability

performance evaluation

signalling

dimensioning

Publikations- och innehållstyp

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