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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

?

?

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

?

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

?

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

?

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
  • 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
bt iwf for cellular phones

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

bt as ad hoc relay for cellular phones

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

bt as local voice data channel
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

references
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!