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Integration of Cellular and Ad Hoc concepts

Integration of Cellular and Ad Hoc concepts. ( motivation and brainstorming). RVS Seminar SS02 Marc Danzeisen. 1.5.2002. Topics. How can Ad Hoc relaying concepts improve the existing Cellular Networks? Integrated Cellular and Ad Hoc Relaying System (iCar): Load balancing

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Integration of Cellular and Ad Hoc concepts

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  1. Integration of Cellular and Ad Hoc concepts (motivation and brainstorming) RVS Seminar SS02Marc Danzeisen 1.5.2002

  2. Topics • How can Ad Hoc relaying concepts improve the existing Cellular Networks? • Integrated Cellular and Ad Hoc Relaying System (iCar): • Load balancing • Radio power decrease • Coverage extension • Bluetooth for Ad Hoc relaying (some ideas) • BT IWF for Cellular Network • Tunneling or Interworking • Signaling / Data separation

  3. How can Ad Hoc relaying concepts improve the existing Cellular Networks?

  4. ? ? NO! ? Yes ? Yes Yes Integrated Cellular and Ad Hoc Relaying System (iCar) Primary Relaying: MH X Mobile Host (MH) BTS A Ad-hoc Relay Station (ARS) BTS B (congested) Call Request ARS2 Call Accept ARS1 MH Y Call Block Call

  5. ? Yes ? Yes ? ? Yes Yes iCar secondary relaying (I) Secondary Relaying: MH X Mobile Host (MH) BTS A Ad-hoc Relay Station (ARS) BTS B (congested) Call Request ARS2 Call Accept ARS1 MH Y Call Block Call

  6. ? Yes ? Yes ? Yes iCar secondary relaying (II) Secondary Relaying: Mobile Host (MH) MH X MH Y BTS A Ad-hoc Relay Station (ARS) BTS B (congested) Call Request ARS2 Call Accept ARS1 MH Y’ Call Block Call

  7. ? BTS A Yes ARS2 Yes ? MH Z ? ARS1 Yes ? ? Yes Yes iCar cascaded relaying MH X BTS B (congested) MH Y BTS C (congested) To BTS D or MH Z’

  8. iCar Simulation • Simulation Model: • 5x5 = 25 BTS with 50 cellular band channels • 56 ARS • Transmission range of BTS = 2 KM • ARS coverage area 500m radius • Coverage probability of 0.23 • Each ARS can handle 3 cellular band channels • 25’000 MHs initially placed with uniform distribution • Simulated with GloMoSim

  9. Results of iCar Simulation (I)

  10. Results of iCar Simulation (II)

  11. Results of iCar Simulation (III)

  12. Bluetooth for Ad Hoc relaying(some ideas)

  13. Today: Cellular as relay for BT devices

  14. MSC/GMSC BT IWF for Cellular Phones? • Benefits: • load balance in Hotspots • lower radio emission • lower power consumption • “easy” extension of Cellular Network • Authentication and Billing Systems (Cellular) can be reused • Open Issues: • Just an other RAN of the UMTS Core Network? • BT range too short? Abis/Iur Abis/Iur BSC/RNC BT IWF BT

  15. MSC/GMSC BSC/RNC BT as Ad Hoc relay for cellular phones? • Benefits: • Service Detection within the Bluetooth Stack (Access to BTS as service) • Ad Hoc behavior of BT (PAN Profile) • Lower BTS density • Billing and Authentication Systems (Cellular) reused • Lower radio emission • Open Issues: • BT Tunnel end point? • Trust management (Multi Provider Environment) • Motivation for relaying (get free minutes?) • Signaling and Voice GWs Abis/Iur Abis/Iur BT IWF BT BT BT

  16. BT as local voice/data channel? • Benefits: • Billing and Authentication Systems (Cellular) reused • Lower radio emission (Inhouse) • Corporate Inhouse Calls like DECT • Real local Calls save Dch of BTS • Open Issues: • Separation of Voice/Data and Signaling • Justification of the Cellular Signaling BT Signaling Data / Voice GSM BT

  17. References • Integrated Cellular and Ad Hoc Relaying Systems: iCar, Wu, Qiao, De, Tonguz, IEEE Journal on selected areas in communications, vol. 19, No. 10, October 2001 • Performance Analysis Of iCar, Wu, Qiao, Tonguz, State University of New York at Buffalo, NY 14260 • Multihop Cellular: A new Architecture for Wireless Communications, Lin, Hsu, Department of Computer and Information Science National Chiao Tung University, Hsinchu, Taiwan Thank you!

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