A Hybrid System Integrating Signal Analysis and Probabilistic Neural Network for User Motion Detection in Wireless Networks

1
A Hybrid System Integrating Signal Analysis and
Probabilistic Neural Network for User Motion
Detection in Wireless Networks

• ??????????
• ???????
• ?????

2
Outline

• Introduction
• Related Works
• MACD (Moving Average Convergence-Divergence )
• MRSS (Momentum of Received Signal Strength)
• PNN (Probabilistic Neural Network)
• Motion Detection with Machine Learning
• PNN-MSMD (Multiple Sensor-based Motion Detection)
  Algorithm
• Simulations
• Conclusions and Future Works

3
Introduction

• 4G?????????,???????????????,??????????????????????
  
• ?????????
• ??????????????(Received Signal StrengthRSS)??????
  ??
• ???????????
• ?????????(motion aware method)
• ???????????(GPS),?????.
• ??RSS?????????,?MACD?MRSS.

4
Related Works

• MACD??
• ?????????????(EWMA),??????????(DIF) ?
• ???????????????????????????????
• EWMA??
• ???EWMA
• ???EWMA

5
Related Works (cont.)

• MRSS ?????EWMA??????
• ????

6
Related Works (cont.)
MACD
MRSS
SEMA
LEMA
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Related Works (cont.)

• PNN??
• ????
• 1.???????,???sensor????MACD?MRSS???????
• ? ???,????????????????????????
• ??,??????????
• 2.??????? ???,???????????
• ?????????,?????????
• 3.??????????????????
• -? ?? ??????????????MRSS?MA
  CD????,??PNN????????
• ??????????????MRSS?MACD?????,??PN
  N????????

8
PNN-MSMD Algorithm

• ?????????????
• Step 1 ???????????????????(RSS)
• Step 2 ?RSS??EWMA?
• 10?a
• Step 3.a ?EWMA??MACD?
• Step 3.b ?EWMA??MRSS?
• Step 4 PNN??MACD?MRSS??????????

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Motion Detection with Machine Learning

• PNN-MSMD Scheme
• Pattern Selection
• MACD?MRSS????WLAN?WiMAX?????????????(a?)??
• ?MRSS?,????a?? 0.29, 0.16, 0.08, 0.05, 0.04,
  0.02, 0.01
• ?MACD?,????lta,ßgt???
• ??????RSS????MACD?MRSS????????
• ,???????? ?

lt0.29, 0.05gt lt0.29, 0.04gt lt0.29, 0.02gt lt0.29, 0.01gt lt0.16, 0.02gt
lt0.16, 0.01gt lt0.08, 0.02gt lt0.08, 0.01gt lt0.05, 0.01gt lt0.04, 0.01gt
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Motion Detection Based Handoff Algorithm
Start
EWMA calculation
no
ARSS lt THND
yes
Motion Detection withPNN-MSMD
no
Approaching State
Leaving State
no
StationaryState
yes
yes
yes
Set Non_ND mode
Set ND mode
Set SEMI_ND mode
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Simulations

• Ping-Pong Effect Analysis
• Handoff Algorithm Analysis

Ping-Pong Effect ???WLAN???????
???????WiMAX???Random Waypoint????
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Ping-Pong Effect Analysis (1/2)
????????
?????????
13
Ping-Pong Effect Analysis (2/2)
?????
??????
14
Handoff Algorithm Analysis (1/2)
????????
?????
15
Handoff Algorithm Analysis (2/2)
??????
????????
16
Simulation Deduction
???? ????
MACD ? ?
PNN-MSMD ? ?
MRSS ? ?
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Conclusions and Future Works

• Conclusions
• ?????????MRSS?MACD??????,????????????????(PNN)????
  ????,??PNN-MSMD?
• PNN-MSMD??
• -?????????????,????????
• -???????????????????
• -?????,????,???????????
• Future Works
• PNN??????,??????????????????????
• ??????????????????????,?????????????????,?????????
  ?

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Simulation Environment
Wireless Environment WLAN WiMAX
Cell Radius (m) 100 2000
Frequency (Hz) 2.472e9 2.5e9
Path Loss Exponent 4 3.5
Shadowing Deviation (dB) 4 4
Transmitter Antenna Height (m) 1 32
Receiver Antenna Height (m) 1 1.5
Tx Power (dBm) 22 40
Transmitter Antenna Gain (dB) 1 15
Receiver Antenna Gain (dB) 1 1
Rx Sensitivity (dBm) -101 -101
Sampling Interval (s) 0.05 0.05
Sampling Size 6 12
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Parameters for the Handoff Performance Evaluation
In WIMAX
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Thanks. QA