Case 6:14-cv-00982-KNM Document 1-4 Filed 12/19/14 Page 1 of 11 PageID #: 56
`
`
`
`
`Exhibit “C”
`
`

`

`Case 6:14-cv-00982-KNM Document 1-4 Filed 12/19/14 Page 2 of 11 PageID #: 57
`111111
`1111111111111111111111111111111111111111111111111111111111111
`US008868060B2
`
`c12) United States Patent
`Faerber et al.
`
`(10) Patent No.:
`(45) Date of Patent:
`
`US 8,868,060 B2
`Oct. 21, 2014
`
`(54) METHOD, NETWORK AND DEVICE FOR
`INFORMATION PROVISION BY USING
`PAGING AND CELL BROADCAST SERVICES
`
`(58) Field of Classification Search
`USPC ..................... 455/419,404.1, 414.1; 340/539
`See application file for complete search history.
`
`(75)
`
`Inventors: Michael Faerber, Wolfratshausen (DE);
`Martin Oettl, Weilheim (DE)
`
`(56)
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`(73)
`
`Assignee: Cellular Communications Equipment
`LLC, Plano, TX (US)
`
`( *)
`
`Notice:
`
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 297 days.
`
`(21)
`
`Appl. No.:
`
`12/450,608
`
`(22)
`
`PCTFiled:
`
`Apr. 2, 2008
`
`(86)
`
`PCTNo.:
`
`PCT /EP2008/053915
`
`§ 371 (c)(l),
`(2), ( 4) Date:
`
`Feb.2,2010
`
`(87) PCT Pub. No.: W02008/119814
`
`PCT Pub. Date: Oct. 9, 2008
`
`(65)
`
`Prior Publication Data
`
`US 2010/0151813 Al
`
`Jun. 17,2010
`
`(30)
`
`Foreign Application Priority Data
`
`Apr. 2, 2007
`
`(EP) ... ... ... .. ... ... ... ... .. ... ... ... ... 07006867
`
`(51)
`
`(52)
`
`(2006.01)
`(2009.01)
`(2009.01)
`
`Int. Cl.
`H04M3/42
`H04W76100
`H04W68/00
`U.S. Cl.
`CPC ............ H04W 761002 (2013.01); H04W 68/00
`(2013.01)
`USPC ................... 455/419; 455/404.1; 340/539.11;
`340/7.59
`
`5,278,539 A *
`5,430,440 A *
`6,161,016 A
`6,177,873 B1
`6,559,753 B1 *
`6,697,651 B2
`
`111994 Lauterbach eta!. ..... 340/539.18
`7/1995 Shim ............................ 340/7.52
`12/2000 Yarwood
`112001 Cragun
`5/2003 Uchida ........................ 340/7.59
`2/2004 Li
`(Continued)
`
`FOREIGN PATENT DOCUMENTS
`
`CN
`EP
`
`112006
`1722804 A
`1 501 328 A2
`1/2005
`(Continued)
`
`OTHER PUBLICATIONS
`
`International Search Report for PCT/EP2008/053915; mailed May
`27, 2008.
`
`(Continued)
`
`Primary Examiner- Charles Shedrick
`(74) Attorney, Agent, or Firm- Martin & Ferraro, LLP
`
`ABSTRACT
`(57)
`Informing a number of users about an emergency or other
`situation of public interest is accomplished using a broadcast
`service. A specific identifier is used in a paging message for
`activating broadcast service in terminals. A terminal checks a
`received paging message with regard to the presence of the
`specific identifier and when detecting the specific identifier,
`switches to a broadcast mode for receiving broadcast content.
`The received broadcast emergency content is notified and/or
`displayed to the users of the terminals.
`
`17 Claims, 4 Drawing Sheets
`
`

`

`Case 6:14-cv-00982-KNM Document 1-4 Filed 12/19/14 Page 3 of 11 PageID #: 58
`
`US 8,868,060 B2
`Page 2
`
`(56)
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`10/2006 Aaron
`7,127,230 B2
`7,130,610 B2 * 10/2006 Dolezal eta!. ............. 455/404.1
`7,519,351 B2 * 4/2009 Malone, III ................ 455/404.1
`7,577,971 B2
`8/2009 Kim eta!.
`8,219,121 B2
`7/2012 Simetal.
`8,260,249 B2
`9/2012 Andersen et a!.
`2003/0143974 A1 * 7/2003 Navarro ........................ 455/404
`2004/0227618 A1
`1112004 Hwang eta!.
`2005/0020260 A1
`112005 Jeong eta!.
`2005/0037728 A1 * 2/2005 Binzel et al. ............... 455/404.1
`2005/0157669 A1
`7/2005 Zhu eta!.
`2005/0237183 A1
`10/2005 Lamb
`2006/0079200 A1 * 4/2006 Hirouchi et a!. ........... 455/404.1
`2006/0178128 A1 * 8/2006 Eaton eta!. ................ 455/404.1
`2007/0004377 A1 *
`112007 Medford et a!.
`........... 455/404.1
`2008/0194224 A1
`8/2008 Thorson et al.
`2008/0227428 A1
`9/2008 Rezaiifar et a!.
`2009/0233634 A1
`9/2009 Aghili eta!.
`2009/0239554 A1
`9/2009 Sammour et a!.
`2009/0251315 A1
`10/2009 Lee et al.
`2010/0099439 A1
`4/2010 Aghili eta!.
`2010/0159870 A1
`6/2010 Jokinen
`
`FOREIGN PATENT DOCUMENTS
`
`GB
`JP
`JP
`JP
`JP
`wo
`wo
`wo
`
`2 357 397 A
`10-336049 A
`2002-530024
`2006-514467
`2006-238379
`02/25974 A1
`2004/082298 A2
`2005/072001 A2
`
`6/2001
`12/1998
`9/2002
`4/2006
`9/2006
`3/2002
`9/2004
`8/2005
`
`OTHER PUBLICATIONS
`
`3m Generation Partnership Project; Technical Specification Group
`Core Network and Terminals; Numbering, addressing and identifi(cid:173)
`cation; (Release 7), 3 GPP TS 23.003 V7.1.0, Sep. 2006, pp. 1-52.
`3m Generation Partnership Project; Technical Specification Group
`Terminals; Technical realization of Cell Broadcast Service (CBS);
`(Release 1998), 3GPP TS 03.41 V7.4.0, Sep. 2000, pp. 1-31.
`Guvenc, eta!.; "Reliable Multicast and Broadcast Services in Relay(cid:173)
`Based Emergency Communications;" IEEE Wireless Communica(cid:173)
`tions; Jun. 2008.
`Khedo, K., et a!.; "A Scalable Multimedia Multicast Protocol for
`Emergency Systems;" IEEE 2006.
`LeBow, G.; "RBDS as an Emergency Broadcasting and Alert Sys(cid:173)
`tem;" IEEE; 1993.
`
`EP
`
`1 513 368 A2
`
`3/2005
`
`* cited by examiner
`
`

`

`Case 6:14-cv-00982-KNM Document 1-4 Filed 12/19/14 Page 4 of 11 PageID #: 59
`
`U.S. Patent
`
`Oct. 21, 2014
`
`Sheet 1 of 4
`
`US 8,868,060 B2
`
`FIG 1
`
`1
`(
`Terminal
`
`2
`(
`BSS/MSC
`
`3
`(
`EC
`
`Network starts
`Cell-Broadcast
`Service
`~
`S11
`
`Broadcasting S12
`Emergency Content \
`
`Paging (E-TMSI)
`1
`S13
`
`Terminal
`Switches to Cell-
`Broadcast Service
`
`v S14
`
`Terminal
`Displays or Notifies v S14
`Emergency Content
`to the User
`
`

`

`Case 6:14-cv-00982-KNM Document 1-4 Filed 12/19/14 Page 5 of 11 PageID #: 60
`
`U.S. Patent
`
`Oct. 21, 2014
`
`Sheet 2 of 4
`
`US 8,868,060 B2
`
`FIG 2
`
`Network is informed
`about an Emergency Situation
`
`v
`
`S21
`
`+
`Network starts Cell Broadcast Service v-
`distributing Emergency Content
`•
`
`Network Starts sending Paging
`messages indicating an emergency
`
`v
`
`+
`Terminal receives the Paging message v-
`and switches to Cell Broadcast mode
`•
`
`Terminal receives, notifies and/or
`displays the Emergency Content
`
`v
`
`S22
`
`S23
`
`S24
`
`S25
`
`

`

`Case 6:14-cv-00982-KNM Document 1-4 Filed 12/19/14 Page 6 of 11 PageID #: 61
`
`U.S. Patent
`
`Oct. 21, 2014
`
`Sheet 3 of 4
`
`US 8,868,060 B2
`
`FIG 3
`
`31
`
`Terminal
`
`1
`
`FIG 4
`
`Terminal
`
`1
`
`1
`
`Terminal
`
`1
`
`Transceiver
`
`!4------------
`
`------------·
`
`Paging Mode
`Unit
`
`l
`~
`42
`41
`Cell Broadcast v---43 44~ Memory Unit for
`TMSI, E-TMSI
`Mode Unit
`
`Control Unit
`
`i ~I
`45
`47-'-
`
`v-·46
`
`+
`Display Unit
`
`,A.coustical
`Unit
`
`

`

`Case 6:14-cv-00982-KNM Document 1-4 Filed 12/19/14 Page 7 of 11 PageID #: 62
`
`U.S. Patent
`
`Oct. 21, 2014
`
`Sheet 4 of 4
`
`US 8,868,060 B2
`
`FIG 5
`
`Terminal receives
`a Paging message
`
`ss1
`
`Normal
`TMSI
`
`Tenr1inal
`establishes a
`physical and/or
`logical channel
`
`S53
`
`E-TMSI
`
`Terminal switches
`to Cell Broadcast
`mode
`
`Terminal receives,
`notifies and/or
`displays the
`Emergency Content
`
`S54
`
`S55
`
`

`

`Case 6:14-cv-00982-KNM Document 1-4 Filed 12/19/14 Page 8 of 11 PageID #: 63
`
`US 8,868,060 B2
`
`1
`METHOD, NETWORK AND DEVICE FOR
`INFORMATION PROVISION BY USING
`PAGING AND CELL BROADCAST SERVICES
`
`2
`terminals. In at least one of the embodiments, this service is
`actively invoked by the terminal in case of need only, using a
`paging mechanism.
`
`CROSS REFERENCE TO RELATED
`APPLICATIONS
`
`This application U.S. National State oflnternationalAppli(cid:173)
`cation No. PCT/EP2008/053915, filed Apr. 2, 2008 and
`claims the benefit thereof. The International Application
`claims the benefits of European Application No. 07006867
`filed on Apr. 2, 2007, both applications are incorporated by
`reference herein in their entirety.
`
`BACKGROUND
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`These and other aspects and advantages will become more
`apparent and more readily appreciated from the following
`description of the exemplary embodiments, taken in conjunc-
`10 tion with the accompanying drawings of which:
`FIG. 1 is a timing diagram showing an embodiment,
`FIG. 2 is a flow chart of a method in accordance with an
`embodiment,
`FIG. 3 is a basic block diagram illustrating an aspect of
`15 paging and broadcast in accordance with one, more or all of
`the embodiments,
`FIG. 4 is a block diagram of an embodiment of a terminal,
`and
`FIG. 5 is a flow chart of an embodiment of a method as
`20 implemented in a terminal.
`
`DETAILED DESCRIPTION OF THE PREFERRED
`EMBODIMENT
`
`The field of communication in particular mobile commu(cid:173)
`nication, and more particular to information provision by
`using paging and cell broadcast services is addressed herein.
`More specifically, the enablement of emergency information
`provision by using enhanced TMSI definition and cell broad(cid:173)
`cast services is addressed.
`Currently informing a large public about possible emer(cid:173)
`gencies and hazards mainly is accomplished acoustically 25
`using such as a siren which can give only very limited infor(cid:173)
`mation and requires a second information channel, e.g. radio
`broadcast, to get helpful guidance. Even in some regions of
`the world, such infrastructure does not exist, or the low popu(cid:173)
`lation density makes deployment thereof inefficient.
`GSM as of today has no specific precaution to support an
`efficient emergency information distribution.
`Described below are methods and devices for conveying
`information such as emergency information to a large number
`of people in an efficient way.
`In at least one of the implementations described below,
`public land mobile network, PLMN, based technology is
`used. Existing infrastructures can be utilized. In one or more
`of the embodiments, GSM is a choice of system due to its 40
`almost global coverage with more than one billion users
`world wide.
`
`35
`
`SUMMARY
`
`45
`
`According to at least one or more of the embodiments, an
`existing broadcast service can be used such as the GSM
`Cell-Broadcast Service which is an SMS type broadcast ser(cid:173)
`vice and delivers in one session the notification and the mes(cid:173)
`sage content. The cell-broadcast service allows sending of
`short messages to all mobile terminals attached or registered
`to a base station or cell. GSM 03.41 defines this Short Mes(cid:173)
`sage Service-Cell Broadcast (SMS-CB) which allows mes(cid:173)
`sages to be broadcast to all mobile users in a specified geo(cid:173)
`graphical area.
`The technology and standard is ready but not frequently
`used because the system design normally requires a very
`frequent reading of a notification channel, omitting almost a
`power saving sleep mode e.g. in a discontinuous reception,
`D RX, mode. This has harsh consequences on the battery drain
`and the stand-by time of a terminal. Therefore operators do
`not use these services but most of the terminals are supporting
`the feature.
`In accordance with at least one of the embodiments, a
`broadcast service such as the Cell-Broadcast service is used 65
`for emergency support, yet avoiding the above mentioned
`significant consequences on the stand-by time of the mobile
`
`Reference will now be made in detail to the preferred
`embodiments, examples of which are illustrated in the
`accompanying drawings, wherein like reference numerals
`refer to like elements throughout.
`FIG. 1 shows an embodiment in which a terminal! such as
`30 a mobile terminal, mobile station or user equipment etc. is
`attached to a network via a base station system, BSS, or
`mobile switching center, MSC, 2 or any other access network.
`The network may include an emergency center 3 for handling
`emergency matters, or any other device which will instruct
`the network to broadcast emergency content or other content
`of public interest e.g. in case of emergencies. When the net-
`work learns, e.g. from the police or a medical institution,
`about an emergency or any other type of situation such as
`traffic jam etc. on which all users attached to a cell of the
`network should be informed, the network starts, in step Sll,
`a broadcast service such as a cell-broadcast service. In step
`S12, the radio access network, RAN, or BSS/MSC 2 begins to
`broadcast emergency content specifying the actual emer(cid:173)
`gency or other situation of public interest.
`Further, in step S13, the RAN or BSS/MSC 2 sends one or
`more paging messages which include a specific identifier
`such as an E-TMSI which is accepted by all terminals 1
`receiving the paging message. The steps S12 and S13 can also
`be carried out in reversed order or simultaneously. In response
`50 to the receipt of the paging message on step S13, the terminal
`1 switches, in step S14, to Cell-Broadcast Service support and
`thus starts to listen to the broadcast channel. In step S15, the
`terminal 1 displays or notifies the content received from the
`broadcast channel to the user of the terminal! via a display or
`55 acoustical output the terminal!.
`Instead of the Cell-Broadcast Service, another broadcast
`service can also be used for informing the terminals on the
`emergency or other content.
`FIG. 2 illustrates an embodiment of a method. In step S21,
`60 the network is informed about an emergency situation or
`other situation of public interest by receiving emergency or
`other actual contents enriched by a severity. The network
`starts or uses cell broadcast service distributing emergency or
`other actual content in step S22. Further, in step S23, the
`network starts sending paging messages which include a spe(cid:173)
`cific identifier for indicating an emergency or other situation.
`The steps S22 and S23 can also be carried out in reverse order,
`
`

`

`Case 6:14-cv-00982-KNM Document 1-4 Filed 12/19/14 Page 9 of 11 PageID #: 64
`
`US 8,868,060 B2
`
`3
`or simultaneously. The sent paging messages may indicate an
`emergency situation by help of the specific identifier such as
`an E-TMSI. When the terminals receive, in step S24, the
`paging message including the specific identifier such as
`E-TMSI, the terminals switch to support or activate the cell
`broadcast service or mode. In step S25, the terminal displays
`or announces or otherwise notifies the user of the terminal on
`the broadcast content.
`FIG. 3 shows a general overview wherein a network such as
`a 3GPP network 31 sends paging messages and broadcast
`messages to all terminals 1 attached to a cell of the cellular
`mobile network 31. The paging messages and broadcast mes(cid:173)
`sages may also be transmitted in one, more or all other cells of
`the network 31 for increasing the number of users receiving
`the broadcast content.
`FIG. 4 illustrates the internal structure of a terminal! in
`accordance with one or more embodiments. The terminal! of
`FIG. 4 includes a transceiver 41 for transmitting and receiving
`signals via an air interface, a paging mode unit 42 for pro(cid:173)
`cessing or evaluating received paging messages, and a cell- 20
`broadcast mode unit 43 supporting a cell-broadcast service by
`frequently checking a broadcast channel with regard to broad(cid:173)
`cast messages. A memory unit 44 serves for storing a TMSI
`allocated to the terminal! from the network 31 and/or one or
`more specific identifiers which, when transmitted from the 25
`network, will cause the terminal 1 to start or activate the
`support of the cell-broadcast mode. A control unit 45 controls
`some or all functions of the terminal! or at least some of the
`units shown in FIG. 4. An acoustical unit 46 enables acous(cid:173)
`tical announcement of broadcast content if available in, or
`convertible to, acoustical form. A display unit 47 enables
`visual display of broadcast or other content.
`FIG. 5 illustrates functions of a terminal such as terminal!
`in accordance with one, more or all of the embodiments.
`When the terminal! receives, in step S51, a paging message, 35
`the terminal! or paging mode unit 42 ofFIG. 4 checks, in step
`S52, whether the TMSI included in the paging message cor(cid:173)
`responds to the TMSI allocated to the terminal 1 from the
`network, or to the specific identifier, or one of the specific
`identifiers, indicating an emergency or other situation of pub- 40
`lie interest, and stored in memory unit 44 of FIG. 4. When the
`terminal detects, in step S52 that the TMSI in the paging
`message corresponds to the temporary TMSI allocated from
`the network to the terminal, the process proceeds to step S53
`wherein the terminal establishes a physical and/or logical 45
`channel in the customary manner. If the terminal detects, in
`step S52 that the TMSI in the paging message corresponds to
`the specific identifier E-TMSI, or one of the specific identi(cid:173)
`tiers stored in memory unit 44, the process proceeds to step
`S54 wherein the terminal! switches to support or listen to the 50
`Cell Broadcast mode, and receives, notifies and/or displays
`the broadcast content, e.g. emergency content, in step S 55.
`When the TMSI of the received paging message does not
`correspond to either of the allocated TMSI or E-TMSI, the
`paging message is neglected without any response.
`In accordance with at least one or more of the embodi(cid:173)
`ments, a paging mechanism such as the existing circuit(cid:173)
`switched, CS, paging mechanism may be used for sending a
`paging message to the terminals which are attached to a cell or
`listening to a sender such as a base station or Node B. The
`paging message may include a specific identifier such as a
`specific temporary mobile subscriber identity, TMSI. The
`terminal checks a received paging message in the usual man(cid:173)
`ner with regard to the TMSI or identifier so as to detect
`whether the paging message is directed to the terminal. When 65
`the terminal detects that the identifier included in the paging
`message is the specific identifier the terminal is thus informed
`
`4
`that the paging message is to be interpreted as an emergency
`notification. The terminal is configured to switch to, or acti(cid:173)
`vate the broadcast service when receiving such a paging mes(cid:173)
`sage including the specific identifier. The paging mechanism
`is thus modified to switch the terminal to the broadcast recep(cid:173)
`tion mode. The mechanism and messages are backwards
`compatible with terminals not being able to interpret paging
`messages as emergency notifications. A terminal which is
`unable to interpret a paging message including the specific
`10 identifier as an emergency notification may simply disregard
`the paging message.
`In at least one of the embodiments, such a paging message
`is formed so as to include the specific identifier formed as a
`specific TMSI. All terminals are identifying the received spe-
`15 cific TMSI as valid.
`Usually terminals receive a TMSI derived from the inter(cid:173)
`national mobile subscriber identity, IMSI. The use of the
`IMSI allows a staggering of the terminals to be paged into 10
`groups, allowing for large DRX cycles.
`In GSM ten paging groups exist so that only 10% (derived
`from the IMSI) of all terminals in a cell sending the paging
`message listen to a paging message. The network will change
`the paging groups in the next paging cycles so as to page all
`terminals.
`3GPP TS 23.003 V7.1.0 (2006 September), chapter 2
`defines actually valid subscriber identities such as IMSI,
`TMSI or P-TMSI. In accordance with one, more or all of the
`embodiments, an additional specific identifier such as E(mer(cid:173)
`gency )-TMSI can be used, and may additionally be defined in
`30 this chapter. Instead ofE(mergency)-TMSI any other name
`may be used for this specific identifier, provided that the
`format and content is such that the terminals can recognize the
`specific identifier as an indication to switch to the listening to
`the cell broadcast service.
`Similar to a normal TMSI assigned to a terminal having
`local significance within a VLR and the area controlled by a
`VLR, or within an SGSN and the area controlled by an SGSN,
`the specific identifier such as E-TMSI may consist of 4 octets
`and can be coded using, e.g., a full hexadecimal representa(cid:173)
`tion, with the structure and coding optionally chosen in order
`to meet local needs. The terminals may be informed on the
`specific identifier or identifiers either at the production stage
`or later by device management or the like, and store this
`specific identifier or identifiers either continuously or until
`replacement by other specific identifiers or cancellation.
`The discrimination between a normal TMSI temporarily
`assigned to the terminal and the specific identifier may be
`done using some bits of the TMSI. An E-TMSI can be fixed
`and will thus not only temporarily be assigned, and can be
`valid in several terminals and cells so that the specific iden(cid:173)
`tifier will not change when roaming.
`The specific identifier such as E-TMSI may be stored,
`similar to a normal TMSI, in the subscriber identity module,
`SIM, or in another storage of the terminals so that some or all
`55 terminals store the same specific identifier.
`When receiving a paging message, the terminals check if
`the TMSI included in the paging message corresponds to the
`allocated TMSI or to the specific identifier.
`Contrary to a normal TMSI, the specific identifier is not
`60 exclusively allocated to one terminal only but is identically
`set in several terminals or all terminals in accordance with
`one, more or all of the embodiments.
`A terminal may be a mobile station or user equipment or
`any other type of mobile or stationary device.
`Terminals such as mobiles in accordance with at least one
`of the embodiments now accept in paging messages the TMSI
`as before, and a specific identifier such as an E(emergency)-
`
`

`

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`
`US 8,868,060 B2
`
`5
`TMSI, which may also indicate a paging group allocation,
`and is generically accepted by all terminals. TheE-TMSI uses
`a number pattern unique to indicate emergency situations. In
`order to avoid a disadvantage that 10% of all terminals in a
`paging area accepting this paging message (and in the next
`paging message the next 10% would come, and so on) would
`seek to establish a point to point connection to get the emer(cid:173)
`gency message content delivered, thus leading to a rush to the
`resources likely to drive the system into an overload situation,
`the terminals are adapted to switch to the broadcast reception
`mode when detecting the specific identifier in the paging
`message, instead of establishing a point to point connection.
`According to embodiments, the advantages of both GSM
`techniques; cell broadcast service and paging mechanism, 15
`can be combined into an efficient emergency provisioning
`system.
`The method introduces a specific identifier such as
`E-TMSI, as previously described, as a generic identifier for
`indicating an emergency situation. When a mobile receives a 20
`valid E-TMSI, it does not establish a PtP connection. Instead
`it switches to Cell-Broadcast mode and starts to monitor the
`Cell-Broadcast Notification channels for emergency infor(cid:173)
`mation contents. The E-TMSI may be formed in different
`ways, but all are a priori known as E-TMSI to the terminal.
`In accordance with one or more of the embodiments, not
`only one specific identifier such as only one E-TMSI may be
`provided but a group of two or more specific identifiers may
`be provisioned. The presence of a group of E-TMSI allows
`the following options.
`A first specific identifier, first E-TMSI, will activate the
`Cell-Broadcast Mode in the terminal for an infinite time, i.e.
`the user has manually to disable the service. The terminal will
`hence start to continuously receive all cell broadcast mes(cid:173)
`sages until manual switch-off.
`A second E-TMSI of another form or bit content will
`activate the Cell-Broadcast Mode in the terminal for a defined
`time (e.g. 1 hour) only, and then the terminal de-activates the
`cell-broadcast mode autonomously. This shall enable battery
`saving, and can be used if the emergency is predictably of a
`limited severity.
`A third E-TMSI of another form or bit content can be used
`to segregate groups of users, e.g. medical personal, law
`enforcement staff etc. The use of this E-TMSI can be used to
`distribute specific information to specific groups.
`When a group of specific identifiers exists, the network will
`select a specific identifier depending on the type of emer(cid:173)
`gency or the content of the information to be broadcast, and
`will include the selected identifier into the paging message or
`messages transmitted in the cell or cells.
`In this embodiment, a group ofTMSI codes is introduced,
`which are used as specific identifiers or E-TMSI. The termi(cid:173)
`nal has a priori knowledge of the valid E-TMSI set and
`refrains from establishing an individual physical and logical
`Charmel when receiving a paging message which includes
`one of these specific identifiers. Instead thereof, the reception
`of an E-TMSI in a paging message initiates the cell broadcast
`service support autonomously in all terminals which have
`received the specially formatted paging message.
`The terminals then monitor the Cell Broadcast Notification 60
`Charmel, and receive the emergency message efficiently as a
`broadcast message.
`Advantageously, all needed technology is already present.
`The introduction of one or a subset of new TMSI values,
`which will cause a pre-defined mobile behaviour, allows the 65
`temporary use of the cell broadcast service, which service is
`usually disabled due to power consumption reasons.
`
`6
`The system also includes permanent or removable storage,
`such as magnetic and optical discs, RAM, ROM, etc. on
`which the process and data structures of the present invention
`can be stored and distributed. The processes can also be
`distributed via, for example, downloading over a network
`such as the Internet. The system can output the results to a
`display device, printer, readily accessible memory or another
`computer on a network.
`A description has been provided with particular reference
`10 to preferred embodiments thereof and examples, but it will be
`understood that variations and modifications can be effected
`within the spirit and scope of the claims which may include
`the phrase "at least one of A, B and C" as an alternative
`expression that means one or more of A, Band C may be used,
`contrary to the holding in Superguide v. DIRECTV, 358 F3d
`870, 69 USPQ2d 1865 (Fed. Cir. 2004).
`The invention claimed is:
`1. A method of commnnicating with a terminal in a cellular
`wireless communication system, the method comprising:
`storing, at the terminal of the cellular wireless communi(cid:173)
`cation system, a group of specific identifiers common to
`a plurality of terminals supporting an emergency warn(cid:173)
`ing, at least two specific identifiers in the group of the
`specific identifiers being for different types of emergen-
`cies, the cellular wireless communication system being
`a bi-directional cellular wireless communication system
`between a base station and the plurality of terminals;
`checking, by the terminal, whether a paging message
`received from the base station includes at least one spe(cid:173)
`cific identifier of the group of the specific identifiers;
`switching, by the terminal, to a broadcast mode for receiv(cid:173)
`ing broadcast content on a broadcast charmel only if the
`received paging message includes the at least one spe(cid:173)
`cific identifier of the group of the specific identifiers; and
`establishing, by the terminal, at least one of a physical
`channel and a logical charmel only if the received paging
`message includes a temporary mobile subscriber iden(cid:173)
`tity allocated to the terminal.
`2. A method according to claim 1, wherein the terminal is
`40 a mobile terminal attached to a mobile network, and the
`broadcast mode is a Global System for Mobile Commnnica(cid:173)
`tions cell-broadcast mode.
`3. A method according to claim 1, wherein the terminal at
`least one of notifies and displays to a user of the terminal the
`45 broadcast content.
`4. A method according to claim 1, wherein a duration of the
`broadcast mode is dependent on the at least one specific
`identifier of the group of the specific identifiers.
`5. A method according to claim 4, wherein the duration of
`50 the broadcast mode is for an indefinite length of time or for a
`limited duration of time based on the at least one specific
`identifier of the group of the specific identifiers.
`6. A method according to claim 1, wherein the group of the
`specific identifiers are temporary subscriber mobile identi-
`55 ties.
`7. A terminal operating in a cellular wireless commnnica(cid:173)
`tion system having a plurality of terminals, the terminal com(cid:173)
`prising:
`a memory unit configured to:
`store a group of specific identifiers common to the plu(cid:173)
`rality of the terminals supporting an emergency warn(cid:173)
`ing, at least two specific identifiers in the group of the
`specific identifiers being for different types of emer(cid:173)
`gencies, the cellular wireless commnnication system
`being a bi-directional cellular wireless commnnica(cid:173)
`tion system between a base station and the plurality of
`terminals; and
`
`25
`
`30
`
`35
`
`

`

`Case 6:14-cv-00982-KNM Document 1-4 Filed 12/19/14 Page 11 of 11 PageID #: 66
`
`US 8,868,060 B2
`
`7
`a control unit configured to:
`check whether a paging message received from the base
`station includes at least one specific identifier of the
`group of the specific identifiers;
`switch to a broadcast mode for receiving broadcast con(cid:173)
`tent on a broadcast channel only if the paging message
`received from the base station includes the at least one
`specific identifier of the group of the specific identi(cid:173)
`fiers; and
`establish at least one of a physical channel and a logical 10
`channel only if the received paging message includes
`a temporary mobile a subscriber identity allocated to
`the terminal.
`8. A terminal according to claim 7, wherein the terminal is
`a mobile terminal attached to a mobile network and the broad- 15
`cast mode is a Global System for Mobile Communications
`cell-broadcast mode.
`9. A terminal according to claim 7, further comprising:
`an acoustical unit configured to notify a user of the terminal
`of the broadcast content; and
`a display unit configured to display the broadcast content to
`the user of the terminal.
`10. A terminal according to claim 7, wherein a duration of
`~he b:oadcast mode is dependent on the at least one specific
`1dent1fier of the group of the specific identifiers.
`11. A terminal according to claim 10, wherein the duration
`of the broadcast mode is for an indefinite length of time or for
`~ lim~ted duration of time based on the at least one specific
`1dent1fier of the group of the specific identifiers.
`. 12. A cellular wireless communication system adapted to 30
`Implement a cell broadcast service and a paging mode, the
`system comprising:
`a transmitter configured to broadcast content and transmit
`at least one paging message to a plurality of terminals in
`a c~ll,.the ~ellularwireless communication system being 35
`a b1-d1rect10nal cellular wireless communication system
`between the transmitter and the plurality of terminals;
`and
`the plurality of terminals, each of the plurality of terminals
`comprising:
`a memory unit configured to:
`store a group of specific identifiers supporting an
`emergency warning, at least two specific identifiers
`in the group of the specific identifiers being for
`different types of emergencies; and
`a control unit configured to:
`check whether the at least one paging message
`received from the transmitter includes at least one
`specific identifier of the group of the specific iden(cid:173)
`tifiers;
`
`8
`switch to a broadcast support mode for receiving the
`content transmitted by the transmitter on a broad(cid:173)
`cast channel only if the at least one paging message
`transmitted by the transmitter includes the at least
`one specific identifier of the group of the specific
`identifiers; and
`establish at least one of a physical channel and a
`!ogical channel only if the received paging message
`mcludes a temporary mobile subscriber identity
`allocated to the terminal.
`13. A system according to claim 12, wherein a duration of
`~he b:oadcast mode is dependent on the at least one specific
`1dent1fier of the group of the specific identifiers.
`14. A system according to claim 13, wherein the duration of
`the broadcast mode is for an indefinite length of time or for a
`!imit~d duration of time based on the at least one specific
`1dent1fier of the group of the specific identifiers.
`15. A terminal operating in a cellular wireless communi(cid:173)
`cation system having a pl