A deterministic power management protocol with dynamic listen interval for wireless ad hoc networks
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A Deterministic Power Management Protocol with Dynamic Listen Interval for Wireless Ad Hoc Networks. Zi-Tsan Chou Networks and Multimedia Institute VTC 06 Fall. Outline. Introductions APM Protocol Numerical Results Conclusions. Introductions. Introductions- Power Saving Mode.

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Zi-Tsan Chou Networks and Multimedia Institute VTC 06 Fall

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A deterministic power management protocol with dynamic listen interval for wireless ad hoc networks

A Deterministic Power Management Protocol with Dynamic Listen Interval for Wireless Ad Hoc Networks

Zi-Tsan Chou

Networks and Multimedia Institute

VTC 06 Fall


Outline

Outline

  • Introductions

  • APM Protocol

  • Numerical Results

  • Conclusions


Introductions

Introductions


Introductions power saving mode

Introductions- Power Saving Mode


Introductions motivation

Introductions - Motivation

  • Challenges of IEEE 802.11 PSM

    • Transmission opportunity

      • The problem of forever loss of ATIM frames

    • The efficient of energy use

      • The listen interval of Q is very large


Introductions transmission opportunity

Introductions- Transmission opportunity

  • The problem of forever loss of ATIM frames


Introductions the efficient of energy use

Introductions - The Efficient of Energy use

  • The listen interval of Q is very large


Introductions related work

Introductions -Related Work

  • Dynamic listen interval

    • AQEC


Introductions goal contribution

Introductions -Goal &contribution

  • Dynamic listen interval adjustmentability

  • Eliminate

    • the possibly forever loss of ATIM frames

    • the unnecessary waste of ATIM frames

    • the neighbormaintenance problem


Apm protocol

APM Protocol

  • Three types of beacon interval

    • Normal Beacon Interval (NBI)

      • Beacon Window: Beacon frame

        • Beacon frame:

          • Listen Interval, Remaining number of BIs(RBI), MAC address, timestamp, and other management parameter.

      • Notification Window: ATIM , ATIM ACK

    • BW-only Beacon Interval (BBI)

      • Beacon Window: Beacon frame

    • Sleep Beacon Interval (SBI)

      • Doze off during the entire BI


Apm protocol three beacon interval

APM Protocol –three beacon interval

802.11 PSM

Listen interval

ATIM Window

APM

Listen interval

NBI

SBI

BBI

ATIM Window

Notification Window

Beacon Window


Apm protocol1

APM Protocol

Listen interval=7

1

2

3

5

6

0

1

0

4

P

LP* x+bp+1=O(P,Q)+LQ*y+bq+1

RBIQ=1

RBIP=2

Offset=2

1

2

0

1

2

0

0

Q

Listen interval=3

Notification Window

Beacon Window


Apm protocol2

APM Protocol

LP* x+bp+1=O(P,Q)+LQ*y+bq+1

P

Data

ATIM

ACK

RBIP=0

ATIM

O(P,Q)=3

Q

t1

t0

5* x=3+5*y+bq ,bq={0,1,2}

=> y=1 ,bq=2 x=2


Apm protocol design bi sets

APM Protocol- DesignBI sets

  • Zero-embracing selection

    • This property states that B naturally includes 0.

  • Prime-cardinality universe

    • This property requires that L must be one or an odd prime.

  • Nonempty rotation-intersection


Apm protocol prime cardinality universe

APM Protocol- Prime-cardinality universe

  • P and Q always miss windows


Apm protocol nonempty rotation intersection

APM Protocol- Nonempty rotation-intersection

  • W.S. Luk and T.T. Wong, “Two New Quorum Based Algorithms for Distributed Mutual Exclusion,” IEEE International Conference on Distributed Computing Systems, pp. 100–106, 1997.

    • M. Maekawa, “A algorithm for mutual exclusion in decentralized systems,”ACM Trans. Comput. Systs., pp. 145-159, May 1985.


Apm protocol nonempty rotation intersection1

APM Protocol-Nonempty rotation-intersection

  • N=8 ,B0={0,1,2,4}


Numerical results

Numerical Results

  • Single hop MANET

    • 20 PS stations

    • Data rate : 11M

    • Beacon frame : 61 bytes

    • Power consumed

      • Transmit:1.65W

      • Receive:1.4W

      • Listen:1.15W

      • Doze:0.045W

      • Transition between doze and awake: 0.575 mJ

    • Beacon Interval:100ms

    • ATIM Window:25ms

      • In APM:

        • Beacon Window:8 ms

        • Notification Window:17 ms


Numerical results1

Numerical Results


Numerical results2

Numerical Results


Numerical results3

Numerical Results


Conclusions

Conclusions

  • The author proposed a mechanism that

    • Stations could dynamically adjust its listen interval.

    • Solves three difficulties in 802.11 power saving mechanisms.


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