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

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
OutLine

  • Introduction

  • Bluetooth-IP services

  • QoS-centric cascading mechanism

  • Performance analysis

  • Conclusions


Introduction
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.


Introduction1
Introduction

  • BT can access IP network services using the

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

    • the Bluetooth Network Encapsulation Protocol (BNEP).


Introduction2
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 services1
Bluetooth-IP services

  • Piconet

  • Scatternet:Several piconets




Qos centric cascading mechanism
QoS-centric cascading mechanism

  • QoS is critical in transmitting of different network segments.

  • a QoS-centric cascading mechanism


Qos centric cascading mechanism1
QoS-centric cascading mechanism

  • Intra-piconet resource allocation

  • Inter-piconet handoff

  • Bluetooth-IP access system


Qos centric cascading mechanism2
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 mechanism5
QoS-centric cascading mechanism

  • Inter-piconet handoff

    • Connection procedure

    • Handoff




Qos centric cascading mechanism8
QoS-centric cascading mechanism

  • Bluetooth-IP access system







Conclusions
Conclusions

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


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