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Development and Evaluation of a Dynamic Bluetooth Network Formation Procedure

Development and Evaluation of a Dynamic Bluetooth Network Formation Procedure. Márk Félegyházi, György Miklós Ericsson Research, Hungary mark@sch.bme.hu. Overview. Bluetooth wireless technology Network formation in Bluetooth Suggested methods two methods for network building

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Development and Evaluation of a Dynamic Bluetooth Network Formation Procedure

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  1. Development and Evaluation of a Dynamic Bluetooth Network Formation Procedure Márk Félegyházi, György MiklósEricsson Research, Hungarymark@sch.bme.hu

  2. Overview • Bluetooth wireless technology • Network formation in Bluetooth • Suggested methods • two methods for network building • network topology optimization • Simulation results • Conclusion

  3. Bluetooth wireless technology (1) Internet • short-range radio technology • cable replacement • universal interface

  4. Bluetooth wireless technology (2) master • master-slave relationship between nodes • Frequency Hopping (FH) • Time Division Duplex (TDD) communication slave

  5. Bluetooth network piconet scatternet

  6. A B Bluetooth scatternet formation

  7. Problem formulation • Connection setup phase • neighbour discovery • physical connection setup • Scatternet building and maintenance • Scatternet optimization

  8. C C D D C D B B E E B E F F A A F A connection breakdown Fully-connected network sending Alive messages (limit=3) Alive Broadcasting Scatternet Building method (ABSB)

  9. C D E B A F Routing Based Scatternet Building method (RBSB)

  10. C C B B A A C C B A B A Traffic Dependent Scatternet Optimization (TDSO) master-slave switch simple piconet connection teardown connection setup

  11. Ad hoc module in PLASMA

  12. Dynamic scatternet formation with the ABSB method throughput (kbit/s) (b) (a) (d) (c) (f) (e) time (s)

  13. Simulation results of the scatternet optimization throughput [bit/s] throughput [bit/s] time [s] time [s] Texecution = 1 s Texecution = 4 s

  14. Conclusion • Bluetooth Scatternet Building • two methods (ABSB and RBSB) • simple methods • distributed algorithms • periodic messaging (robust against packet loss) • Bluetooth Scatternet Optimization (TDSO) • distributed algorithm • decisions according to local measured traffic • Simulation results • scatternet building • fully-connected network building and maintenance • scatternet optimization • increases network capacity by reconfiguring the topology

  15. Future work • Implementation of the routing based scatternet building method • Performance evaluation of the alive based scatternet building method • Measurements with the tuning of the parameters in the scatternet optimization method • Test both scatternet building and optimization procedure together

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