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					       WIRELESS PERSONAL
     COMMUNICATIONS SYSTEMS

     INTRODUCTION AND OVERVIEW

           DAVID GOODMAN
  DEPARTMENT OF ELECTRICAL & COMPUTER
              ENGINEERING
        POLYTECHNIC UNIVERSITY
            dgoodman@poly.edu
               718-260-3221
EL501 Fall 2002       David Goodman, September 4, 2002
                  LOCAL PHONE CALL



                        SWITCH




                         PSTN




EL501 Fall 2002                  David Goodman, September 4, 2002
           INFORMATION TRANSFER
                  Helen's                      Switching                    Mike's
                   Phone                        Machine                     Phone


                              off hook

                               dial tone

                            keystrokes

                                                             alert signal
                            ring indication


                                                              off hook

                       remove ring indication


                                              conversation




EL501 Fall 2002                                            David Goodman, September 4, 2002
              CELLULAR NETWORK



                  BASE   SWITCH               BASE




                          PSTN




EL501 Fall 2002                   David Goodman, September 4, 2002
       INITIALIZE CELLULAR PHONE

                                                         BASE
                    BASE


                                         BASE
                                          *
                                                  BASE
                  BASE                                          BASE


                                   BASE
                                                SWITCH
                           BASE


                                                            BASE



                                  BASE

                                                 BASE




EL501 Fall 2002                                  David Goodman, September 4, 2002
             INITIATE PHONE CALL

                                  502-9178
                                  913-7123                        BASE
                    BASE


                                             BASE
                                               *
                                                      BASE
                  BASE                                                   BASE


                                        BASE           502-9178
                                                       913-7123
                           BASE

                                                    SWITCH
                                                                     BASE



                                      BASE

                                                     BASE



EL501 Fall 2002                                      David Goodman, September 4, 2002
  SEARCH FOR CELLULAR PHONE
                             913-7123                                            913-7123


                                                        913-7123     913-7123



                  913-7123       BASE                                                BASE


                                                              BASE      BASE
                                                   913-7123
                                    913-7123

                     BASE                                                       913-7123



                                                       BASE
                                         BASE
                                                                      SWITCH
                                                   913-7123
                                        913-7123


                                                      913-7123



                                            BASE



EL501 Fall 2002                                               David Goodman, September 4, 2002
     RESPOND TO PAGE MESSAGE

                                                 913-7123



                                                            BASE
                    BASE
                                                              *

                                         BASE
                                          *
                                                  BASE

                  BASE                                               BASE


                                   BASE

                           BASE

                                                SWITCH
                                                                   BASE



                                  BASE

                                                 BASE



EL501 Fall 2002                                    David Goodman, September 4, 2002
           ASSIGN RADIO CHANNELS

                                                                 267



                                  channel 103                           BASE
                    BASE
                                                                             *

                                                   BASE
                                                    *
                                                                BASE

                  BASE                                                             BASE
                                                                       267

                                            BASE          103

                           BASE

                                                           SWITCH
                                                                                 BASE



                                          BASE

                                                            BASE


EL501 Fall 2002                                             David Goodman, September 4, 2002
                       CONVERSATION


                                                      BASE
              BASE


                                    BASE
                                     *
                                            BASE

            BASE                                              BASE
                                                                *

                             BASE

                     BASE

                                           SWITCH
                                                             BASE



                            BASE

                                           BASE


EL501 Fall 2002                                   David Goodman, September 4, 2002
                            HANDOFF


                                                      BASE
              BASE


                                    BASE
                                     *
                                            BASE

            BASE                                              BASE
                                                                *
                             BASE

                     BASE

                                           SWITCH
                                                             BASE



                            BASE

                                           BASE


EL501 Fall 2002                                   David Goodman, September 4, 2002
                  NETWORK ELEMENTS



                     TERMINALS

                    BASE STATION

                      SWITCH

EL501 Fall 2002             David Goodman, September 4, 2002
             INFORMATION TRANSFER
                  Susan's                                                                                Mike's
                                          Base                Switch
                   Phone                                                            Base                 Phone
                  system information                                                system information



                    service request         service request


                     ring indication        ring indication

                                              page request        page request       paging broadcast
                     paging broadcast



                                                                 notify response      page response


                                                               assign channel 267        tune to 267
                      tune to 103         assign channel 103

                                                                                      apply alert tone


                                                                 notify response      notify response

                   stop ring indication       stop ring indication



                                                       conversation
EL501 Fall 2002                                                             David Goodman, September 4, 2002
       TECHNOLOGY CHALLENGES



                  MOBILITY

                   ETHER

                  ENERGY

EL501 Fall 2002            David Goodman, September 4, 2002
              NETWORK OPERATIONS

       USER INFORMATION TRANSPORT

       CALL CONTROL

       MOBILITY MANAGEMENT

       RADIO RESOURCE MANAGEMENT

       SECURITY, PRIVACY

       OPERATIONS, ADMINISTRATION & MAINTENANCE

EL501 Fall 2002              David Goodman, September 4, 2002
              WIRELESS SYSTEMS
                         CELLULAR
                         CORDLESS
                        SATELLITES
        WIRELESS LOCAL AREA NETWORKS
     WIRELESS PERSONAL AREA NETWORKS
                   WIRELESS LOCAL LOOPS
                       WIRELESS DATA
                  SPECIALIZED MOBILE RADIO
EL501 Fall 2002                  David Goodman, September 4, 2002
             CELLULAR PHONES
  1983: ANALOG - LOCAL


  1991: DIGITAL - ROAMING


  2000: ANYTIME, ANYWHERE
          + SHORT MESSAGES


EL501 Fall 2002       David Goodman, September 4, 2002
NEW CELLULAR TECHNOLOGY

     PACKET DATA COMMUNICATIONS

     IMPROVED BANDWIDTH EFFICIENCY
     -----------------------------------------------------

     THIRD GENERATION SYSTEMS

EL501 Fall 2002                    David Goodman, September 4, 2002
      PERSONAL COMPUTING
   1981                DESKTOP


   1991           LAPTOP           NETWORK


   200?                WIRELESS
EL501 Fall 2002            David Goodman, September 4, 2002
                  WIRELESS DATA
          MOBILE WIRELESS COMPUTING


•SPEED              10 kb/s

•COST               13 min/MB

•POWER

•APPLICATION/USER INTERFACE
EL501 Fall 2002               David Goodman, September 4, 2002
    TELEPHONE (NON-CELLULAR)
          HASN’T CHANGED MUCH SINCE 1939




        INFORMATION IN         INFORMATION OUT

               sounds          sounds (3 kHz)
            switch hook
          dial     keypad

EL501 Fall 2002             David Goodman, September 4, 2002
         TELEPHONE NETWORK
                      LOTS OF CHANGE



                  MORE USERS 800,000,000 LINES
                  FASTER CONNECTIONS
                  CALLING FEATURES
                  COMPLEX BILLING
                  FEWER EMPLOYEES



EL501 Fall 2002                   David Goodman, September 4, 2002
     TELEPHONE TECHNOLOGY
             OPPOSITE OF COMPUTERS !!

                      SIMPLE TERMINAL

                     COMPLEX NETWORK

                     CIRCUIT SWITCHED

                     CENTRAL CONTROL

                  PRIMITIVE USER INTERFACE
EL501 Fall 2002                  David Goodman, September 4, 2002
                  CELLULAR PHONE

                      TELEPHONE

              RADIO TRANSMITTER/RECEIVER

                     DATA MODEM

                      COMPUTER


EL501 Fall 2002              David Goodman, September 4, 2002
           PRACTICAL SYSTEMS

         EUROPE: GSM 900, GSM 1800        UMTS (3- G)

         JAPAN: PDC, CDMA   W-CDMA (3- G)

         NEW YORK CITY:
             VERIZON: AMPS + CDMA 850
             AT&T: AMPS + TDMA 850
             SPRINT: CDMA 1900
             VOICESTREAM: GSM 1900
             NEXTEL: iDEN
EL501 Fall 2002             David Goodman, September 4, 2002
        TECHNOLOGY DETAILS
        RADIO TRANSMISSION: MULTIPLE ACCESS
             FREQUENCY DIVISION
             TIME DIVISION
             CODE DIVISION

        MOBILITY MANAGEMENT
             REGISTRATION
             PAGING

        RADIO RESOURCE MANAGEMENT
             ADMISSION CONTROL
             CHANNEL ALLOCATION
             POWER CONTROL
             HANDOFF
EL501 Fall 2002               David Goodman, September 4, 2002
       AIR INTERFACE PROTOCOLS

                  RADIO       LAYER 1           RADIO
              TRANSMISSION      BITS        TRANSMISSION



                   LOGICAL    LAYER 2          LOGICAL
                  CHANNELS    PACKETS         CHANNELS




                  MESSAGES     LAYER 3
                                               MESSAGES
                              MESSAGES

                   TERMINAL                       BASE
                                                 STATION
EL501 Fall 2002                    David Goodman, September 4, 2002
 MEDIA ACCESS CONTROL LAYER

        LAYER 2   LAYER 2                  LAYER 2

         DATA
         LINK




         MEDIA     MEDIA
                                             MEDIA
        ACCESS    ACCESS
                                            ACCESS




        LAYER 1   LAYER 1                  LAYER 1


       PHYSICAL


EL501 Fall 2002             David Goodman, September 4, 2002
              FREQUENCY DIVISION

                                               12
                                               11
                                               10
                                                9
                                                8
                                                7
                                                 6
                                                 5
                                                 4
                                                3
                  CARRIER                       2
                                                1

                            TIME
EL501 Fall 2002             David Goodman, September 4, 2002
                  TIME DIVISION




                  1   5   9     1    5     9    12
                              TIME
                      FRAME
                                         SLOT
EL501 Fall 2002                      David Goodman, September 4, 2002
                         HYBRID


                                                        3




                                                        2




           CARRIER                                      1


                     1   2   3   4   1   2    3     4
                                 TIME
                         FRAME
                                             SLOT
EL501 Fall 2002                          David Goodman, September 4, 2002
                  CODE DIVISION




EL501 Fall 2002           David Goodman, September 4, 2002
    RADIO RESOURCE MANAGEMENT
                  BASE




                                               BASE              BASE
                         BASE




                                BASE
                  BASE
                                                BASE

                                                          BASE
         BASE
                                                                    BASE
                         BASE



                  BASE                 BASE



                                                            BASE?
                                                           CHANNEL?
                                                         BASE POWER?
                                                       TERMINAL POWER?



EL501 Fall 2002                               David Goodman, September 4, 2002
        PRACTICAL STEPS IN
   RADIO RESOURCE MANAGEMENT
           CALL
         ADMISSION



                     BASE & CHANNEL
                       ASSIGNMENT



                                       POWER
                                      CONTROL




                                                    HANDOFF




EL501 Fall 2002                            David Goodman, September 4, 2002

				
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