Quality of service in ip services over bluetooth ad hoc networks
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Quality-of-Service in IP Services over Bluetooth Ad-Hoc Networks. WAH-CHUN CHAN Department of Electrical and Computer Engineering, University of Calgary, Canada JIANN-LIANG CHEN, PO-TSANG LIN and KA-CHIN YEN

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Quality-of-Service in IP Services over Bluetooth Ad-Hoc Networks

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Quality-of-Service in IP Services over Bluetooth Ad-HocNetworks

WAH-CHUN CHAN

Department of Electrical and Computer Engineering, University of Calgary, Canada

JIANN-LIANG CHEN, PO-TSANG LIN and KA-CHIN YEN

Department of Computer Science and Information Engineering, National Dong Hwa University, Taiwan

Mobile Networks and Applications 8, 699–709, 2003

2003 Kluwer Academic Publishers. Manufactured in The Netherlands.


OutLine

  • Introduction

  • Bluetooth-IP services

  • QoS-centric cascading mechanism

  • Performance analysis

  • Conclusions


Introduction

  • Bluetooth have the potential to ensure the best services, system resources and quality.

  • The BLUEPAC (BLUEtooth Public ACcess) can enable mobile Bluetooth devices to access local area networks.


Introduction

  • BT can access IP network services using the

    • IETF Point-to-Point Protocol (PPP) and

    • the Bluetooth Network Encapsulation Protocol (BNEP).


Introduction

  • To provide high QoS in a Bluetooth-IP mobile environment, a pre-requisite for our discussion is seamless data transmission.

  • A cascading system:

    • fair resource allocation scheme,

    • seamless handoff strategy, and

    • transparent bridging system


Bluetooth-IP services


Bluetooth-IP services

  • Piconet

  • Scatternet:Several piconets


Bluetooth-IP services


Bluetooth-IP services


QoS-centric cascading mechanism

  • QoS is critical in transmitting of different network segments.

  • a QoS-centric cascading mechanism


QoS-centric cascading mechanism

  • Intra-piconet resource allocation

  • Inter-piconet handoff

  • Bluetooth-IP access system


QoS-centric cascading mechanism

  • Intra-piconet resource allocation

    • Two service types:

      • Synchronous Connection Oriented (SCO) and

      • Asynchronous Connectionless Link (ACL)

        • Flush Timeout


QoS-centric cascading mechanism


QoS-centric cascading mechanism


QoS-centric cascading mechanism

  • Inter-piconet handoff

    • Connection procedure

    • Handoff


QoS-centric cascading mechanism


QoS-centric cascading mechanism


QoS-centric cascading mechanism

  • Bluetooth-IP access system


QoS-centric cascading mechanism


QoS-centric cascading mechanism


Performance analysis


Performance analysis


Performance analysis


Conclusions

  • A fast and efficient handoff scheme that supports BT roaming handoffs between different Access Points was proposed.


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