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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
Integration of Cellular and Ad Hoc concepts

(motivation and brainstorming)

RVS Seminar SS02Marc Danzeisen

1.5.2002


Topics
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



Integrated cellular and ad hoc relaying system icar

? Cellular Networks?

?

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


Icar secondary relaying i

? Cellular Networks?

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


Icar secondary relaying ii

? Cellular Networks?

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


Icar cascaded relaying

? Cellular Networks?

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’


Icar simulation
iCar Simulation Cellular Networks?

  • 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


Results of icar simulation i
Results of iCar Simulation (I) Cellular Networks?




Bluetooth for ad hoc relaying some ideas
Bluetooth for Ad Hoc relaying Cellular Networks?(some ideas)



Bt iwf for cellular phones

MSC/GMSC Cellular Networks?

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


Bt as ad hoc relay for cellular phones

MSC/GMSC Cellular Networks?

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


Bt as local voice data channel
BT as local voice/data channel? Cellular Networks?

  • 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


References
References Cellular Networks?

  • 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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