as) United States
`a2) Patent Application Publication co) Pub. No.: US 2008/0212558 Al
`
` Aillaud et al. (43) Pub. Date: Sep. 4, 2008
`
`
`US 20080212558A1
`
`(54) COMMUNICATION SET UP BETWEEN
`WIRELESS DEVICES
`Inventors:
`Christophe Aillaud, Fuveau (FR);
`Henri Ohanian, Ceyreste (FR)
`
`(75)
`
`Publication Classification
`
`(51)
`
`Int. Cl.
`(2006.01)
`HOLS 3/00
`(52) US. CMe cocceccccsccesstessesessessseessessseessesssesseseseen 370/345
`
`Correspondence Address:
`BUCHANAN, INGERSOLL & ROONEY PC
`POST OFFICE BOX 1404
`ALEXANDRIA,VA 22313-1404 (US)
`.
`(73) Assignee:
`
`GEMPLUS,Gemenos(FR)
`
`;
`(21) Appl. No.:
`(22)
`PCTFiled:
`.
`(86) PCT'No.:
`§ 371 (c)(1).
`(2), (4) Date:
`
`11/795,500
`Dee. 9, 2005
`
`PCT/EPS/56637
`
`Jan. 31, 2008
`
`(30)
`
`Foreign Application Priority Data
`
`Jan. 19,2005
`
`(FR) weececseeeseesceteneeeeeenees 0500543
`
`ABSTRACT
`(67)
`The invention relates to a slave wireless device (Picc) com-
`prising:
`several applications,
`a wireless communication interface,
`a processing module interpreting a presentation request
`(ReqB4SMO00)andtime-slotted markers (ReqB4SMO00,
`SM2, SMB, SM4) received onthe communication inter-
`face, selecting several applications or application groups
`corresponding
`to
`the
`presentation
`request
`(ReqB4SM00), transmitting the wireless slave device
`identifier distinctive for each application or application
`group selected in the distinctive time slot in response to
`the presentation request.
`Said invention enables the slave device to indicate several
`application groups in response to a single presentation
`request.
`
`
`
`SAMSUNG 1010
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`SAMSUNG 1010
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`Patent Application Publication
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`Sep. 4, 2008
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`US 2008/0212558 Al
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`US 2008/0212558 Al
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`Sep. 4, 2008
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`COMMUNICATION SET UP BETWEEN
`WIRELESS DEVICES
`
`[0001] The invention relates to radio frequency communi-
`cations between a master wireless device and slave wireless
`devices. The invention concerns in particular the setting up of
`a communication via an application identification request
`transmitted from a master device and via responses from slave
`devices in time slots defined by the master device.
`[0002] The standard ISO 14443 defines the requirements
`for a radio frequency transaction between a wireless smart
`card and a terminal.
`
`[0003] The transaction comprises a plurality of successive
`phases. During a first phase, knownas switching on,the radio
`frequency interface of the terminal is switched on andreini-
`tialised. The terminaltransmits with a 13.56 MHz carrier. The
`
`cards located in the transmissionfield rectify the carrier trans-
`mitted in order to supply theircircuits.
`[0004] During a second phase, knownasstartup andanti-
`collision phase, the terminal determines the presence of one
`or more cards in its transmission field. According to ISO
`14443-3 type B, the terminaltransmits in particular a request
`requiring that the cards located in its transmission field
`present themselves and defining a numberof response time
`slots. The terminal also defines the response timeslots, the
`end oftransmission ofthe request launchingthefirst timeslot.
`FIG. 1 illustrates said operation: the REQB4SMrequest of
`the terminal announces4 responsetimeslots for the various
`cards in its transmissionfield. The first time slot starts at the
`end of the REQB4SM request. The terminal then transmits
`SM2, SM3 and SM4slot markers the end of which marks the
`start of the second, third and fourth timeslots.
`[0005] Two cards respond to the REQB4SM request. The
`cards respond respectively via the ATQB1 and ATQB2
`response frames. Each card responds in a distinctive time slot
`via a single response frame. AnATQBresponse comprises the
`following data: a pseudo-random card identifier for the com-
`munication parameters and information for the execution of
`an application by default. The information comprises in par-
`ticular an identifier of the single application group (desig-
`nated by the AFI acronym in English) by default in the card.
`The information also comprises the numberof loaded appli-
`cations associated with this application group along with the
`total numberof applications loaded in the card. The terminal
`thus determines the characteristics of said cards and selects
`one or more.
`
`[0006] During a third phase, knownasactivity phase, com-
`mand exchanges are performed between the terminal and a
`selected card to enable execution of an application group
`(transport, bank operation, counting of loyalty points, iden-
`tity check, etc.) during the transaction.
`[0007] More and more frequently, a smart card has a plu-
`rality of distinctive applications, application groups or sub-
`groups. In order to declare said various applications or appli-
`cation groups, a known method proposes carrying out a
`plurality of successive startup and anti-collision phases. At
`each new phase,the identifier of the single application group
`by default is associated with another application or applica-
`tion group.
`[0008]
`Said method has disadvantages. Sometransactions,
`such asthe authorisation of passageof a user at a tube portico
`or toll, require a total execution time less than 100 millisec-
`onds. The duration (and thus the number) of startup and
`
`anti-collision phases must therefore be limited. Thus, all of
`the applications or application groups cannot be declared in
`such a transaction.
`[0009] There is therefore a need for a slave wireless device
`comprising:
`a plurality of applications
`[0010]
`a wireless communication interface;
`[0011]
`aprocessing module, suitable for interpreting a pre-
`[0012]
`sentation request and received contact time-slotted markers,
`suitable for selecting on the interface a plurality of applica-
`tions or application groups correspondingto the presentation
`request, suitable for transmitting a distinctive slave wireless
`device identifier for each application or application group
`selected, in a distinctive timeslot, in responseto the presen-
`tation request.
`[0013] According to one variant, the processing module is
`suitable for generating said wireless device identifiers and
`associating them with the respective applications or applica-
`tion groups, before or during the startup of the presentation
`request.
`[0014] According to yet another variant, the device com-
`prises an identifier distinctive for each application or appli-
`cation group, the processing module being suitable for trans-
`mitting the identifier of an application or application group in
`the transmission timeslot of the slave device identifier asso-
`
`ciated with said application or application group.
`[0015] According to another variant, the slave wireless
`device is a smart card.
`
`[0016] The invention also concerns a methodforsetting up
`a wireless communication comprising the following steps:
`[0017]
`amaster wireless device transmits a presentation
`request defining at least the applications or application
`groups sought, and defines response timeslots;
`[0018]
`at least one slave wireless device such as above
`defined and arranged in the transmission field selects
`applications or application groups and transmits a slave
`wireless device identifier distinctive for each application
`or application group selected, in a distinctive timeslot,
`in responseto the presentation request.
`[0019] According to one variant, the processing module
`generates said wireless device identifiers and associates them
`to the respective applications or application groups before or
`during the presentation request.
`[0020] According to yet another variant, the processing
`module transmits an identifier distinctive for each application
`or application group selected in the transmission timeslot of
`the slave device identifier associated with said application or
`application group selected.
`the transmissions
`[0021] According to another variant,
`between the master and slave wireless devices comply with
`the specifications of the standard ISO 14443-3 type B.
`[0022] The invention will be better understood by reading
`the following description, accompanied with the appended
`drawings which show:
`[0023]
`FIG. 1, exchanges according toprior art between a
`terminal and a smart card during the startup and anti-collision
`phase;
`FIGS. 2 to 4, various exchange scenarios according
`[0024]
`to the invention between a terminal and a smart card during
`the startup and anti-collision phase.
`[0025] The invention proposesto respondto a presentation
`request of a master wireless device viaa plurality ofresponses
`of the sameslave wireless device, declaring a plurality ofits
`applications or application groups in distinctive response
`
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`US 2008/0212558 Al
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`Sep. 4, 2008
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`time slots. A distinctive slave wireless device identifier is
`associated with each application or application group and
`by the card. The smart card therefore declares virtually to the
`transmits in response to the request. A plurality of slave
`terminal
`the various applications or application groups
`wireless devices are declared virtually via a single slave wire-
`selected as the distinctive smart cards. Each smart card iden-
`less device. The sameslave wireless device may therefore use
`tifier is for example generated before or during the reception
`a plurality of response time slots originally planned for a
`
`single response of each ofthe slave wireless devices arranged ofthe presentation request, and stored in memory inatable of
`in the transmissionfield of the master wireless device.
`the smart card.
`
`[0034] The first PUPI parameter correspondsto a distinc-
`tive smart card identifier associated with eachAFI transmitted
`
`[0026] A plurality of applications or application groups
`maythusbe declared by a slave wireless device in the reduced
`time ofa single startup and anti-collision phase. The transac-
`tion time between the master and slave wireless devices is
`thus not extended.
`
`[0027] Theapplication ofthe inventionto the specifications
`of the standard ISO 14443-3 type B described later is only
`provided by way of example, the invention being applicable
`to protocols wherein a similar problem arises. Likewise, the
`invention is described in its application to a terminal and to a
`smart card but is applicable for other master and slave wire-
`less devices.
`
`FIG.2 illustrates a time chart of a first example of
`[0028]
`exchanges during a startup and anti-collision phase. The
`transmissions of the terminal and ofa first smart card are
`
`illustrated respectively on the top (PCD) and bottom parts
`(Picc) of the time chart.
`transmits a
`the terminal
`step,
`[0029] During a first
`ReqB4SMOO presentation request of the smart cards
`arranged in its transmission field. Said request may take the
`following form:
`[0030]
`05h 00h 02h CRCB
`[0031] The first parameter is an identifier of the terminal.
`The second parameter defines the application or the applica-
`tion group/groups requested (identified by an AFT) for the
`smart cards that must respond. In this case, the value 00h
`defines that any card in the field must respond,irrespective of
`its applications. The third parameter defines the number of
`response timeslots to the request. In this case, the 02h value
`defines the use of 4 time slots. The end of the request marks
`thestart of the first timeslot.
`
`[0032] A first smart card arranged in the transmissionfield
`receives the presentation request on its wireless communica-
`tion interface and its processing module processes the
`request. Said smart card has 2 transport applications, identi-
`fied by the respective 12h and 13h AFI, belonging to the Ixh
`application group. The smart card has a bank application
`identified by the 21h AFT belonging to the 2xh application
`group. The processing module therefore selects the applica-
`tions which correspond to the request from the terminal. In
`this case, all of the applications are selected.
`[0033] The processing module therefore commands the
`transmission ofa responseforeach application in a distinctive
`time slot. The time slots other than the first are defined on
`expiry of the SM2 to SM4 markers transmitted by the termi-
`nal. The ATQB1, ATQB2 and ATQB4responses are respec-
`tively transmitted in the first, second and fourth timeslots.
`The responses may have the following structure:
`
`ATQB1: PUPI1 ApplicationDatal
`CRCB
`
`(AFI=13h) Protolnfol
`
`ATQB2: PUPI2 ApplicationData2 (AFI=12h) Protolnfo2
`CRCB
`
`ATQB3: PUPI3 ApplicationData3 (AFI=21h) Protolnfo3
`CRCB
`
`[0035] The terminal thusdetects the various applications of
`the smart card as various smart cards. The second parameter
`defines the AFI ofan application. The third parameter defines
`one or more parameters of the protocol associated with an
`application.
`[0036] On expiry of the timeslots, the terminal transmits a
`Sel selection command. Said command comprises the PUPI1
`identifier and thus selects the application correspondingto the
`13h AFI in the smart card. The selection command may take
`the following structure:
`[0037]
`1Dh PUPI1 Param1,2,3,4 Highlayer-INF (options)
`CRCB
`
`[0038] The third parameter defines the use whichis carried
`out from the protocol specified in the ATQB1 response. The
`fifth parameter defines options for processing the command.
`[0039] Onreceipt ofthe selection command,the smart card
`determines that the transaction with the terminal will use the
`
`13h application.
`[0040] The association of the PUPI identifiers with the
`applications or application groups is either carried out
`pseudo-randomly by the smart card, or predefined duringits
`manufacture. The association of the PUPIidentifiers with the
`
`applications or application groups is preferably generated
`before the startup and anti-collision step, in order not to
`extend the duration of the transaction.
`
`FIG.3 illustrates a time chart of another example of
`[0041]
`exchanges during the startup andanti-collision phase.
`a
`[0042] During a first
`step,
`the terminal
`transmits
`ReqB4SM10 presentation request ofthe smart cards arranged
`in its transmission field. Said request may take the following
`form:
`
`05h 10h 02h CRCB
`[0043]
`[0044] The 10h value of the second parameter defines that
`any card in the field must respond if it has any application
`from the Ixh group. The Ixh group correspondsto the trans-
`port application group in the example. The 02h value of the
`third parameter defines 4 response timeslots. As in the pre-
`ceding example, the ReqB4SM10 request and the SM2, SM3
`and SM4 markers delimit the response timeslots.
`[0045]
`Thefirst smart card has 2 applications correspond-
`ing to the request: the 12h and 13h applications. The process-
`ing module selects said two applications as corresponding to
`the request. The processing module therefore commandsthe
`transmission of a response for said two applications in a
`distinctive
`
`time slot. The ATQB1 and ATQB2responses are
`[0046]
`respectively transmitted in the second and fourth timeslots.
`The responses may havethe following structure:
`[0047] ATQB1: PUPI1 ApplicationDatal (AFI=13h) Pro-
`tolnfol CRCB
`
`[0048] ATQB2: PUPI2 ApplicationData2 (AFI=12h) Pro-
`tolnfo2 CRCB
`
`[0049] The terminal processes the responses and transmits
`a Sel selection command.In said command, it provides the
`PUPI2 identifier and thus selects the application correspond-
`
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`US 2008/0212558 Al
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`Sep. 4, 2008
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`ing to the 12h AFI in the first smart card. The selection
`command maytake the following structure:
`[0050]
`1Dh PUPI2 Param1,2,3,4 Highlayer-INF (options)
`CRCB
`
`[0051] Thus, the smart card determines that the 12h appli-
`cation will be used during the transaction with the terminal.
`[0052]
`FIG.4 illustrates a time chart of another example of
`exchanges during the startup and anti-collision phase, in the
`case where a second smart card is also present in the trans-
`mission field of the terminal. The second smart card, pro-
`duced according topriorart, only has a 21h bank application.
`[0053] During a first
`step,
`the terminal
`transmits a
`ReqB4SM20presentation request of the smart cards.
`[0054]
`Thefirst smart card has a single application corre-
`sponding to the request: the 21h application. Its processing
`module selects said application as corresponding to the
`request. The processing module therefore commands the
`transmission ofanATQB3responsefor said application in the
`fourth timeslot.
`
`[0055] Thesecond smart card automatically respondsto the
`request corresponding to its single AFTin thefirst time slot. Its
`response may havethe following structure:
`[0056] ATQB4: PUPI4 ApplicationData4 (AFI=21h) Pro-
`tolnfo4 CRCB
`
`[0057] Theterminal processes the responses from the smart
`cards and transmits a Sel selection command. Said command
`comprises the PUPI4 identifier and thus selects the applica-
`tion corresponding to the 21h AFI in the second smart card.
`The selection command maytake the following structure:
`[0058]
`1Dh PUPI4 Param1,2,3,4 Highlayer-INF (options)
`CRCB
`
`[0059] Thus, the second smart card determines that it is
`selected and that the 21h application will be used during the
`transaction with the terminal.
`
`[0060] A smart card and a methodaccordingto the inven-
`tion may therefore be used without disturbing the response
`from smart cards accordingto priorart.
`
`1. A slave wireless device comprising:
`a plurality of applications;
`a wireless communication interface;
`a processing module configuredto interpret a presentation
`request and time-slotted markers received via the wire-
`less communication interface;
`
`wherein the processing module functionsto:
`select a plurality of applications or application groups cor-
`respondingto the presentation request; and
`transmit a slave wireless device identifier distinctive for
`each application or application group selected, in a dis-
`tinctive time slot, in responseto the presentation request.
`2.A slave wireless device according to claim 1, wherein the
`processing module functions to generate said wireless device
`identifiers and associate them with the respective applications
`or application groups, before or during startup of the presen-
`tation request.
`3. A wireless device according to claim 1, comprising an
`identifier distinctive for each application or application
`group, wherein the processing module functions to transmit
`the identifier of an application or application group in the
`transmission time slotofthe slave device identifier associated
`with said application or application group.
`4. A slave wireless device according to claim 1, wherein
`said slave wireless device is a smart card.
`5. A method for setting up a wireless communication,
`comprising the following steps:
`transmitting, from a master wireless device, a presentation
`request defining requested applications or application
`groups, and defining responsetimeslots;
`selecting, in at least one slave wireless device arranged in
`the range oftransmission from said master device,appli-
`cations or application groups, and transmitting a slave
`wireless device identifier distinctive for each application
`or application group selected, in a distinctive timeslot,
`in responseto the presentation request.
`6. A method for setting up a wireless communication
`according to claim 5, wherein said wireless device identifiers
`are generated and associated with the respective applications
`or application groups, before or during the presentation
`request.
`7. A method for setting up a wireless communication
`according to claim 5, wherein an identifier distinctive for each
`selected application or application group is transmitted in the
`transmission time slotofthe slave device identifier associated
`
`with said selected application or application group.
`8. A method for setting up a wireless communication
`according to claim 5, wherein the transmissions between the
`master and slave wireless devices comply with the specifica-
`tions of the standard ISO 14443-3 type B.
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