Alternating PICC and PCD support

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					                                    WG8 N 1836
                                      TF2 N 705



Alternating PICC and PCD
support
Songdo, September 2011

Prepared by: ACS, Bundesdruckerei, Infineon
Rationale

 WG8 decided in April 2010 to let investigate the needs of mobile
  devices using the 14443 interface.
 WG8 Convener reported accordingly to the SC17 Plenary in
  October 2010 and SC17 approved Resolution 639/10:

    New WG8 PWI into ‘Specifying the specific needs of mobile devices
    using the ISO/IEC 14443 methods‘
    JTC1/SC17 approves the launch of a PWI assigned to WG8, into
    ‘Specifying the specific needs of mobile devices using the ISO/IEC
    14443 methods’, with a view to developing an NP and accompanying
    working draft. If WG8 do not complete this within a year, they are to
    report back on progress to the next SC17 plenary.

 Due to that Resolution 639/10 WG8 Members have been
  encouraged to work on the PWI and possibly to submit a
  Working Draft.
 DIN has followed SC17’s offer and presents such a Working
  Draft, proposed in TF2 N 704 = WG8 N 1835.
19.09.2011                                                                  Page 2
ISO/IEC 14443
 Defines two devices
     PCD           Proximity Coupling Device
     PICC          Proximity Card or Object




              PCD                              PICC




 PCD shall poll for Type A and Type B PICCs


 PICC shall respond to Type A or Type B commands


19.09.2011                                            Page 3
Market needs

 Upcoming devices should support both, PCD and PICC roles of
  ISO/IEC 14443.
 Market increasingly brings up eID applications, which run purely
  according ISO/IEC 14443. Specifically mobile devices should be
  able to communicate with eID related contactless objects.
 Also finance and transport sectors are interested in letting
  customers use contactless bank cards, resp. tickets, via mobile
  devices like mobile phones.
 Such devices should be able to communicate with:
          PICCs (in PCD role)
          PCDs (in PICC role)
          another equivalent device (which one is in PICC or PCD role is to be
           initially negotiated)
 => creation of a new device fulfilling above needs
19.09.2011                                                                  Page 4
ISO/IEC 14443 – Extended Proximity Device (EPD)

                           EPD


                         PCD Mode




                         PICC Mode




 Extended Proximity Device supports PCD AND PICC Mode
 Initial Mode is PICC Mode (either Type A or Type B)
 Entering PCD Mode only if no external RF field is detected
 In PCD Mode poll for Type A and Type B PICCs
 Manual or automatic Mode selection
19.09.2011                                                     Page 5
Scenarios
 Scenario 1: EPD in automatic mode alternation

                                            EPD



                                        PCD Mode




                                        PICC Mode




                   tPICC1              tPCD         tPICC2               tPCD



               RF On               A        B                        A      B


               RF Off
                                                                                   t


           Start         Check for                           tPICCi > tPCD
                        external RF field
                                                             tPICCi ≠ tPICCj


Set date                                                                        Page 6
Scenarios
 Scenario 2: EPD and PICC

                           EPD



                          PCD Mode

                                                             PICC

                        PICC Mode




               tPICC1                    tPCD                       tPICC2



           RF On                     A      B   Cmd


           RF Off
                                                                                t




           PICC present
                                                      Resp
                                                                                t



Set date                                                                     Page 7
Scenarios
 Scenario 3: EPD and PCD

                          EPD



                        PCD Mode

                                                       PCD

                        PICC Mode




               tPICC1               tPICC2



           RF On

           RF Off                                       Resp
                                                                  t


                                             A   Cmd
            RF On

             RF Off
                                                                  t



Set date                                                       Page 8
Scenarios
 Scenario 4: EPD and EPD

                         EPD 1                                  EPD 2



                        PCD Mode                               PCD Mode




                        PICC Mode                              PICC Mode




               tPICC1



                                                                                    A
           RF On

           RF Off                                 Resp
                                                                                           t
              tPICC1                                                       tPICC2

                                    A   B   Cmd          Cmd
            RF On

             RF Off
                                                                                           t



Set date                                                                                Page 9
Conclusion
 Market needs increasingly require that both PCD and PICC Modes
  should be supported in one device.
        in particular in the eID, financial and transport sectors
 Actual status of ISO/IEC 14443 & Amendments reflect a
  maximum of quality, functionality and applicability:
        All parts of ISO/IEC 14443 & 10373-6 have been revised.
        Amendments (soon published) for:
             Antenna Classes, EMD, Parameter Exchange, Very High Bit Rates.
 Time has come to make available the much attractive 14443
  interface to those devices which determine our daily life at a high
  degree, i.e. mobile phones.
 Only minor adoptions in ISO/IEC 14443 are required to achieve
  that aim by the presented few further definitions proposed in the
  Working Draft (TF2 N 704 = WG8 N 1835), which lead to a new
  device category: the Extended Proximity Device (EPD).
19.09.2011                                                              Page 10

				
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