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'43     d2$[P5=+ b$45$ WјÉ3K08 2$C)@\Yr9 2$b7k,ߏOA; 2$^ UBurs~< 2$*X4GllӨ? 2$h4晳`A 2$ u4U~<ƪiB 2$IWtp&|sOL]yPD 2$4AG<ߍ]uFE 2$DO'uß"=FΜhG 2$Ń׻}ӖD/I 2$te6GBY)J 2$A*&vzAmTlL 2$#N ڨH,5BN 2$7>1@+xP 2$ˆbÊnLQ 2$@,("`3S 2$lx=CvFF%T 2$)NLS%WT<7'x,V 2$h0Lȡ9,,W 2$j8g.9l'I`XX 2$)LNlSEY 2$, sX0lu [ 2$}YT]7Aovi 2$@b?ڕt$ j 2$49`P3!1 2$1+BW;Իsd 2$X xTnށ? 2$&nX:EPZB 2$3=ɠa Sv>T 2$ rle 2$=a] 1Ć"Bx 2$-#6qRIq b$ihL4,ݓY0< 2$TIXAw b$%H]#V<31,f b$?t:bMqK, b$J7 q5 k+p#?! b$,Rߊ _؉,:E 2$3',HRrPHq $ b$lɪ(1iYu"Ss  0e0e     A@  A5% 8c8c     ?1 d0u0@Ty2 NP'p<'pA)BCD|E||S" On}@@8ʚ;ʚ;g4BdBdv 0bppp@  <4ddddb 0bbg48d8dv 0bp( pL<4!d!d` 0b @b80___PPT10 pp?J-1 ,2nd MC, Colmar, FranceO  =8Emergency Services: Resource Management and QoS Control8 8Emergency Services: Resource Management and QoS Control8^Emergency Services and QoS_Emergency Services and QoS`*Emergency Services and QoS Traffic models"+]*i*Emergency Services and QoS Traffic models"+]* Emergency Services and QoS4  #Resource Management and QoS Control#dPrediction Models ePrediction Models  Prediction Models - Prediction Models: Advantages and drawbacks 4.   ,)Prediction Models: some referenced models*J   )Prediction Models: some referenced models*J  f)Prediction Models: some referenced models*J    Prediction Models: Our approach  ! >    ARIMA models   #  ARIMA models   1 Resource Management and CAC HResource Management and CAC QResource Management and CAC SSimulation Scenarios"   V Simulation results: Scenario (i)!!:     Z!Simulation results: Scenario (ii)"":     \"Simulation results: Scenario (iii)##:    gSPrediction Models for Handoff Resource Reservation in Multimedia Wireless NetworksSPb*  ` 33` Sf3f` 33g` f` www3PP` ZXdbmo` \ғ3y`Ӣ` 3f3ff` 3f3FKf` hk]wwwfܹ` ff>>\`Y{ff` R>&- {p_/̴>?" dd@?" dd@   " @3 ` n?" dd@   @@``PN    @ ` ` pB `B ` H@(  E  0 'g<$D 0  13-14 Oct. 2005T   6  0 <$D 0   4th MCM Wuerzburg, Germany>   0Ԭ  `<$D 0  d*B  0Dfp"M'M,$D 0B   0D;;Gp"Y'YY,$D 0  C $A uusin"w ,$D 01  6Ȱ "``0<$D 0  y7Emergency Services: Resource Management and QoS Control87B  s *޽h ? 3380___PPT10.̵f Default Design:     ` \@ (  \  \ 0 ``<$D 0  f13-14 October 2005 \ 05 `<$D 0   F* \ 0ԁ ` <$D 0  d*B \ 0Dfp"M'M,$D 0B \ 0D;;Gp"Y'YY,$D 0 \ C $A uusin"w ,$D 0a \ <"   ,$D0 gNikola Rozic University of Split, Croatia Gorazd Kandus Institute Jozef Stefan, Ljubljana, Slovenia h0x fOn}On}fOn}]q[]q[ fOn}On}+fOn}z          \ # l_ж_ж g ?3"r0ey       9Emergency Services: Resources Management and QoS Control(:3:9B \ s *޽h ? 3380___PPT10.̵f0 `XP(    N0"e"e 17   d*   P __  N?"e"e f 7  f*   P __d  c $ ?8`  4  N8@"e"e  }  RClick to edit Master text styles Second level Third level Fourth level Fifth level!     S  TLG"e"e 1O   d*   P __  TV"e"e f O  f*   P __H  0bfܖ ? 3380___PPT10.ҵ pTx(  T T 0P      N*$3  T 0x `    P*&3  T 6D  `   N*$3  T 6 ` `  P*&3 H T 0bfܖ ? ̙33&  =50d(  d{ d <0" ,$D0 kNikola Rozic, Dinko Begusic University of Split, Croatia Gorazd Kandus Institute Jozef Stefan, Slovenia l0x fOn}On} f fOn}On} fj       d c 40e0e "``0<$D 0   H d 0޽h ? 33___PPT10i.̵׫+D='  = @B +#   : 2 @ h (  h h c $T``0<$D 0     h < ,">,$D0 rContents0 0xOn}; h <@"5 U,$D0  Emergency Services and QoS8x> h <H/"` ,$D0  Prediction models8x") h <2"- ,$D0 { ARIMA models(x" B  h <|"  ,$D0 2 Resource Management and Call Access Control (CAC)(3x324  h <\"P $ p ,$D0  Proposed CAC method8x3  h <"  ,$D0  Simulation results8xC  h <" ;,$D0 # Conclusion remarks and Future Work8$x##H h 0޽h ? 33___PPT10i.̵׫+D='  = @B +$  ;3 (    c $``0<$D 0     <"@W,$D0 i How to provide reliable communication services under emergency, attack or catastrophe situations ?`Cq]x'q]x]h]]i.  s *"0` ,$D0 (1. Reliable service infrastructure (fault tolerant systems: hardware, software, protocols (robust, adaptive, resistant to DoS attacks) 2. Quick response for recovery operations, 3. System (capacity) design according to the criterion of the worst case ? 4. Resource management (special algorithms)>)On}C         * J   8XH  0޽h ? 33___PPT10i.̵׫+D='  = @B +T   k c  (    c $o``0<$D 0   l  s *" $D0ph___PPT9JB XGlobal aspects: 1. Reliable signal an emergency situation Priority services among networks Secure access to services (only eligible users  police, fire and ambulance, and to everybody in case of emergencies) 4. Limit the network damage caused by DoS attacks>"v4."v4  d`  q 3 8XS  <\"0Y P,$D0 QoS in emergency situations ?8q]x]]8XH  s *$" t$D0LD___PPT9& XOperational aspects: 1. Reliable voice, data, and video services Reliable mobility and localisation services Reliable resource management and call access control\Eb0b 8XH  0޽h ? 33___PPT10i.̵׫+D='  = @B +   s(    c $``0<$D 0   i  s *d"pH,$D0 Normal load condition: the objective is to keep probability of being unsatisfied (punsatisfied) as low as possible by prioritizing the ongoing calls since drop can take place only if the call was admitted beforehand.G3f<  ~8X`   c $A)  ??k    s *" p,$D0 &Emergency load condition: the objective is twofold: minimize blocking (all user should be able to call for help), and minimize dropping (all important information should be exchanged). When consider dropping caused by handoffs in cellular networks the two objectives are counteracted. 7k]k4s B m8XH  0޽h ? 33___PPT10i.̵׫+D='  = @B +_   v n  (    c $$E``0<$D 0   6  s *"@0 ,$D0 Pdrop includes: Probability of being uncontrolled dropped due to bad link quality Probability of being dropped due to controlled operation of the Resource Management Control (RMC): - duration control (time-limited calls) - pre-emption control (priority calls) higher priority level for the emergency calls: if new emergency call can t be admitted normally, one of lower priority calls is dropped - drop of the handoff call if it can t admitted due to the system congestion Bc J n FOn} A  >  8X  s *"( 00,$D0 H In this work we stress the importance of not dropping the handoff calls to assure tracking the mobile people  they can help in gettingmore complete information about the state of the imperilled region 40]]@   ,     8XH  0޽h ? 33___PPT10i.̵׫+D='  = @B +   + #  l (  l l c $L``0<$D 0   - l <" ,$D0 Problem statement40x  - l <" ,$D0 QoS for roaming calls00xOn}r  l <?"P S  l <"P ,$D0 1fast handoff between base stations/ access points.201On}"" +  l <" . ,$D0 }the handoff failure00xOn}r  l <?"@ 0  l <L" 0 ,$D0 dropping of the connection.0On}% l <h" > ,$D0 w QoS criterion00x On} r l <?" 0@   l <"P < ,$D0 ^xdropping of the connection after admission should be considered much less acceptable than blocking the new connection !Xy0vj?   H l 0޽h ? 33___PPT10i.̵׫+D='  = @B +    pZ(  p p c $``0<$D 0   2 p <"pt,$D0  The approach2 0   "  ^ p <"  F ,$D0 Fan effective way to reduce the handoff call dropping probability (CDP)0G0xFOn}FI p <$"n =,$D0 1advanced resource reservation for future handoffs020x1On}1r p <?" p2  p <"  ,$D0 (efficient advanced resource reservation")0)On}(W  p < "  ,$D0 Agood prediction methods for future new and handoff call arrivals.B0AOn}Ar p <?" ` H p 0޽h ? 33___PPT10i.̵׫+D='  = @B +      C (    c $P``0<$D 0      0\"`P` ,$D0 ~Good predictions ?203  <"] ,$D0 Predictable situations:40x3f3f  0"0{ ,$D0 t Normal ( stationary ) mod of operation - random traffic - seasonal patterns (daily, weekly, yearly) - special events (sport, conferences, open-air concerts, political meetings, ...)j(qOn}x0On}x0x(On}On}U  <""9,$D0 ?People speaking about predictable and unpredictable situations.@0?On}?  0L("p ,$D0 V Special ( non-stationary ) mod of operation - non-stationary traffic - random burst and impulse patterns - sudden events (new accidents, earthquakes, new attacks, ...)n-qOn}x0On}xe0x-On}~On}On}5  </"  > ,$D0 Unpredictable situations:40x@@H  0޽h ? 33___PPT10i.̵׫+D='  = @B +  D(    c $7``0<$D 0     0L9"P,$D0 tHowever, all things that happen in real life are predictable: The only question is how reliable the prediction is !Du0?On}5t  s *?"Pf ,$D0 (.In our approach we assume: - Management system uses  good predictions - Network(s) under accidental or natural disasters does not fail completely, but can provide emergency services - Network resources are managable and efficient control algorithms can be performed0x0HOn} On}uOn} On}WOn}NG u YH  0޽h ? 33___PPT10i.̵׫+D='  = @B +   t?(  t t c $I``0<$D 0    t <P"",$D0 nAnalytical models: based on hypothesis of probability laws, queuing theory, stationarity, independence, ... Ho0xOn}ZOn}o  t <N" @K ,$D0 Measurement-based models: based on stochastic systems (linear/non-linear, state-space or time series) fitted to the traffic measurements H0xOn}qOn}  t <"* h,$D0 SwExpert models: knowledge-based models (subjective assessments, experience-based inference, soft (fuzzy) decisions Hx0xOn}gOn}p    O H t 0޽h ? 33___PPT10i.̵׫+D='  = @B +    x(  x? x <T_" ,$D0 Analytical models: explicit relationships, simple implementation hypothesis of the true model, assumptions of stationarity, ergodicity, indenpendence, ...0/fx<]x#]xOn}On}ROn} x <\e"P,@ ,$D0 Measurement-based models: incorporate real system behavior, adaptivness, ... no closed form relationships, computing complexity`04fx4]xOn}hF x <8n"X P,$D0 Expert models: incorporate real life features, unstructured models, ... problem to define the expert s reliability, `0:fx.]xOn}h(f   x c p0e0e ``0<$D 0   H x 0޽h ? 33___PPT10i.̵׫+D='  = @B +  .&|(  | | c $t``0<$D 0   & | <`"  @,$D0 xAnalytical models:40On} | <"@ ,$D0   Guard Channel Scheme ,O.T.W. Yu and V.C.M. Leung, IEEE JSAC-15, 1997. 6vv'' 'On}b      | <"` ,$D0 @  Adaptive QoS Handoff Priority Scheme , W. Zhuang, B. Bensaou, and K.C. Chua , IEEE Trans. on Vehicular Techn., Vol. 49, No. 2, pp. 494-505, March 2000. +vvv$%'';'On},           ,   | <("0 U ,$D0   MultiMedia One-Step PREDiction (MMOSPRED) , B.M. Epstein and M. Schwartz , IEEE JSAC-18, March, 2000.0v;v*'''V1    | <p"@  ,$D0 L  Admission Limit Curve (ALC) , J. Siwko, I. Rubin , IEEE Trans. on Net., Vol. 9, June 2001.7v+v''''p3   r | <4" *i,$D0   Dynamic Channel Pre-reservation Scheme (DCPr) , X. Luo, I. Thng, and W. Zhuang , Proc. IEEE Int. Symp. Computers Commun., July 1999.DvEv.''4'3              H | 0޽h ? 33___PPT10i.̵׫+D='  = @B +   7/  (    c $``0<$D 0     <"   @,$D0 mMeasurement-based models:"0On}  <4"P,$D0   Measurement-Based Admission Control (MBAC) ,M. Grossglauser, D.N.C. Tse, IEEE Trans. on Net., Vol. 7, June 1999.Av6v*#'''BO    <x"T ,$D0   Hierarchical Location Prediction (HLP) , T. Liu, P. Bahl, I. Chlamtac , IEEE JSAC-16, August 1998. -v<v&"'''XJ    <" j ,$D0 H  Wiener & ARMA models) , T. Zhang, E. van den Berg, J. Chenninkara, P. Agrawal, J.C. Chen and T. Kodama, IEEE JSAC-19, Oct. 2001.07vXv'3'''''           *  <" jp,$D0 |  Region-Based Call Admission Control) , J-H. Lee, S-H. Kim, A-S.Park, J-K. Lee, IEICE Trans. on Com., Vol. E84-B, Nov. 2001.?vBv%-''''tT    H  0޽h ? 33___PPT10i.̵׫+D='  = @B +%  <40(    c $l``0<$D 0   "  <"  @,$D0 tExpert-based models:"0On}   <"V  ,$D0   Measurement-Based Admission Control (MBAC) ,M. Grossglauser, D.N.C. Tse, IEEE Trans. on Net., Vol. 7, June 1999.Av6v*#'''BO  H  0޽h ? 33___PPT10i.̵׫+D='  = @B +>   U M @  (    c $l+``0<$D 0   9  <1"PP]p,$D0 7Measurement-based ARIMA (univariate/multivariate) model"808On}8  <$6"P J,$D0 p>  N.Ro~i, D.Beguai, G.Kandus:  Application of ARIMA Models for Handoff Control in Multimedia IP Networks , Proceedings of the International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS'03), pp. 787-791, Awaji Island, Japan, December 7-10, 2003.  Bvv' ')''A'>''      # ; A 0       <H": ,$D0   N.Ro~i, G. Kandus: "MIMO ARIMA models for handoff resource reservation in multimedia wireless networks", Wireless Communications and Mobile Computing (WCMC), Vol. 4, No.5, August 2004, pp. 497-512, John Wiley&Sons, ?vv'''+''5'9'H  0޽h ? 33___PPT10i.̵׫+D='  = @B +^   u m P  (    c $Y``0<$D 0   }  <_"`,$D0 = Univariate Autoregressive Integrated Moving Average (ARIMA) L>v 0'" 1b  c &A ??  b   c &A ??Pp b   c &A ??P b  c &A ??X0}    He ?"PP U,   H|i ?"$ {ARIMA (p,d,q)x(P,D,Q)S H '/r  <?"0 @\  S A ?? `   0  HJ ?"` v  (one-step ahead conditional expectation: B)&''&\  S A ?? P   <t ?"  ]where b  c &A ?? ]    <w ?" 0  gwith a variance \  S A ??  H  0޽h ? 33___PPT10i.̵׫+D='  = @B +0  G?`& (    c $ ``0<$D 0     <D" ,$D0 7- Multi-Input Multi-Output ARIMA (MIMO-ARIMA) .v'''N  Hl ?"  MIMO ARIMA (p,d,q)D  'r  <?"0 `   H ?" !  2xPolynomial matrices A, B, C should satisfy certain conditions when applied to prediction or control problems: we choosejy''R' ',m     <X ?"   with a covariance 0 b  c &A  ??  b  c &A  ??P | r  <?" ` @  H, ?"= z #stationary output and input vectors,$##2  < ?"  hnt is i.i.d. with < nt>=0 and covariance matrix S5     l    b  c &A  ?? P  b  c &A  ?? P  b ! c &A  ??   b # c &A ?? 0 b % c &A ?? 0 p H  0޽h ? 33___PPT10i.̵׫+D='  = @B +}  p3$(    c $8``0<$D 0   ^  <"` ,$D0  The Call Admission Control (CAC)2!0 :    < ?"60 jequilibrium equation  \  S A 1??pP Y  1  Hh ?"P ]new arrival rate 0''b  c &A 3?? 3  H ?" +  Va number of accepted calls  '  H ?" F  {demanded number of calls   ' \  S A 4?? 0  4\  S A 5?? 0  5F ! < ?"   $actual number of used channels Ct f%  '#+#' b " c &A 6??J0 6b $ c &A 7??* P 7 & H ?"b Uhandoff call arrival rate  ' ' H ?"  rcall release rate   ' b ( c &A 8??p  8 , H( ?"pj  Rcall termination rate   'b - c &A :??   : / H8 ?" /  sa number of released calls   ' \ 0 S A ;??k Q ;b 2 c &A ??``   H  0޽h ? 33___PPT10i.̵׫+D='  = @B +"  912(    c $``0<$D 0     <",$D0 RThe Call Admission Control (CAC)  cont. 2*0)R   %  H ?" t- the reservation time that has to be ensured for the CAC system to be able to reserve sufficient amount of resources that will be required in the next time interval: f #+' 'j  = N  b  c &A G??l G  H ?"PP  a Example:   '   H ?"P J  ZIf the prediction interval is   'b  c &A H??   Hb  c &A I?? 0  I  H ?"` $  j, 0 #' r ! <?" ` b " c &A J??@  Jb $ c &A K??i p` @  K & H| ?"P 0 J  j.the CAC algorithm has to start not later than  / /'b ' c &A  L??@ `  L& ) H  ?"p `j  ,steps before the handoff call burst starts.  - -'0    * H ?"   ]Let   ' b + c &A! M?? @  Mr - <?" p b . c &A$ y??f @  y 0 Hd ?"ppj  `seconds   '  1 H ?" S   a (3 steps)    2 Hl ?"f )(with handoff calls normally distributed)* *)H  0޽h ? 33___PPT10i.̵׫+D='  = @B +  (    c $"``0<$D 0   B  C A#?0z  <h$ ?"p   Example: The total number of channels, new accepted channels, handoff channels and the time precedence for the case of burst-like handoff traffic4  '' H  0޽h ? 33___PPT10i.̵׫+D='  = @B +   (    c $-``0<$D 0     <\/ ?"  0Let consider three typical traffic scenarios: (i)  stationary process, (ii) nonstationary seasonal process, (iii) nonstationary burst-like process, J/ j0' '' ' '%'&''                   <lF ?"@p  }ARIMA(p,1,0)x(0,0,0) 0 #' F  <L ?" p0 H average call holding time Tcall =200 s, call s average channel holding time in each cell Tchannel =100 s, average new call arrival rate lN is considered in the range 0 to 0.45 calls per second total cell capacity is N=30 channels the target call droping probability (TCDP) is 0.05x%!'/'2'/''/'%''\   1   ! %   =B  <^ ?"C  *ARIMA(p,1,0)x(0,0,0) + intervention model >+ #'<    <d ?"`@Z ARIMA(p,1,0)x(1,1,0)S | ### '\    r  <?"p @r  <?" @Pr  <?" @H  0޽h ? 33___PPT10i.̵׫+D='  = @B +  z(    c $Dq``0<$D 0     <xr ?"p  Scenario (i)2  '"   <d| ?"@p  }ARIMA(p,1,0)x(0,0,0) 0 #'   <Ԁ ?"P   tActual and predicted total number of channels at lN=0.27 and lh=0.004 H 2%- %-%'G <  3 A&?P j <  3 A'? V   <  ?"  ?Handoff call dropping probability: comparison for scenario (i) "@ @%> H  0޽h ? 33___PPT10i.̵׫+D='  = @B +  8(    c $``0<$D 0     < ?"  Scenario (ii)2  '"   <H ?"   `Actual and predicted total number of channels at lN=0.27 and seasonal handoff Q 2%-%'P   <D ?" 0  @Handoff call dropping probability: comparison for scenario (ii) "A A%?   <8 ?" ?%ARIMA(p,1,0)x(1,1,0)S ; S=60 minutes& ### '#\    J  3 A(?" . <  3 A+?@  H  0޽h ? 33___PPT10i.̵׫+D='  = @B +    '(    c $``0<$D 0     <D ?"p  Scenario iii)2  '"   <0 ?"   XActual and predicted total number of channels at lN=0.27 and handoff burst M 2%- % 'L   <| ?" 0  AHandoff call dropping probability: comparison for scenario (iii) "B B%@   < ?"0 -ARIMA(p,1,0)x(0,0,0) + intervention model ; . .#- b   c &A" ~??  ~J  H ?" 0z :; xn  intervention variableR +# B  C A%?n g <  3 A+?v@ P H  0޽h ? 33___PPT10i.̵׫+D='  = @B +a  xp  (    c $``0<$D 0     < ?"  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