EP0910925A1 - Mobile receiver for alphanumeric data reception - Google Patents

Mobile receiver for alphanumeric data reception

Info

Publication number
EP0910925A1
EP0910925A1 EP97930302A EP97930302A EP0910925A1 EP 0910925 A1 EP0910925 A1 EP 0910925A1 EP 97930302 A EP97930302 A EP 97930302A EP 97930302 A EP97930302 A EP 97930302A EP 0910925 A1 EP0910925 A1 EP 0910925A1
Authority
EP
European Patent Office
Prior art keywords
mobile
receiving device
network
mobile receiving
data reception
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97930302A
Other languages
German (de)
French (fr)
Inventor
Ingo Weghorst
Peter Freitag
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gigaset Communications GmbH
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0910925A1 publication Critical patent/EP0910925A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices

Definitions

  • the invention relates to a mobile receiving device for alphanumeric data reception and a method for addressing such a mobile receiving device in a mobile radio network.
  • the mobile receiving device for alphanumeric data reception is designed only for non-verbal data reception from a base station of the mobile radio network.
  • the mobile radio system is preferably designed in accordance with the GSM standard (radio transmission system in accordance with the recommendations of the CEPT subcommittee Group Special Mobile or Global System for Mobile Communication, GSM) or recommendations based thereon such as DCS 1800 or PCS 1900.
  • GSM Global System for Mobile Communication
  • short messages from a limited number of alphanumeric characters can be transmitted as a so-called short message service for all subscribers (short message service cell broadcast, SMS-CB) via a logical channel of the mobile radio network .
  • SMS-CB short message service cell broadcast
  • These short messages (Short Message Service-Cell Broadcast-Short Massage, SMS-CB-SM) are stored in a central computer (Short Message Service-Cell Broadcast Service Center, SMS-CB-SC).
  • SMS-CB-SC Short Message Service-Cell Broadcast Service Center
  • the central computer has programmed in which cells of the GSM network the message is broadcast, how often it is repeated and the like.
  • Mobile radios that support the short message service can receive and display the short messages. Sending such short messages from the mobile radio device to the GSM network is not possible due to the GSM specifications.
  • So-called pagers are known. These are mobile receiving devices in which the data received are preferably shown as alphanumeric characters on an LC display.
  • the invention is based on the object of specifying a mobile receiving device for alphanumeric data reception and a method for addressing such a mobile receiving device in a mobile radio network, the implementation effort being minimized.
  • This object is according to the invention for a mobile receiver unit by the l and dissolved in claim for a method of addressing by the features specified in patent claim 2 Mer k ⁇ male.
  • a mobile receiving device ME is shown, which is connected via an antenna A to a mobile radio system (not shown in more detail).
  • the antenna A is connected to a radio device FE, which has an HF receiver.
  • the radio device FE is connected to a logic circuit LS.
  • the logic circuit LS is used for digital signal processing of the data transmitted between the mobile receiving device ME and the mobile radio system and for controlling the mobile receiving device ME itself.
  • the mobile receiving device ME has a user interface BO which contains at least one display device AE, for example an LC display.
  • a keyboard can also be provided.
  • the logic circuit LS and the user interface BO are connected to one another via a data bus DB.
  • the mobile receiving device ME For power supply, the mobile receiving device ME has a power supply SV.
  • the mobile receiving device ME for alphanumeric data reception represents a GSM pager, so to speak.
  • the mobile receiving device ME does not support the full GSM functionality. In particular, no transmitting part is provided, and thus the mobile receiving device ME functions as a pure receiving device.
  • the mobile receiving device ME does not have the chip card provided according to GSM. Thus, the mobile receiving device ME cannot carry out the signaling customary in GSM, but can only evaluate the air interface with regard to the broadcast control channel (BCCH) and the short message service channel (SMS-CB channel, CBCH).
  • BCCH broadcast control channel
  • SMS-CB channel CBCH
  • Each base station sends out the network identifier on the broadcast control channel, which consists of the mobile network code (MNC) and the mobile country code (MCC).
  • MNC mobile network code
  • MCC mobile country code
  • the mobile network code and the mobile country code are stored in the standard GSM device on the chip card, which is not present in the mobile receiving device ME.
  • the mobile receiving device ME compares the received values (MNC, MCC) for the mobile network code and the mobile country code with the values stored in the mobile receiving device ME, which are stored, for example, in a non-volatile memory SP.
  • This memory SP can be assigned to the logic circuit LS.
  • the mobile receiving device ME can contain a single pair of MNC-MCC values, as is the case in GSM on the chip card.
  • the mobile receiving device can also
  • the mobile receiving device ME is thus connected to a single network or to a plurality of networks, or is synchronized to the associated short message channel. Furthermore, each base station radiates configuration information in accordance with the GSM recommendations in the broadcast control channel, which relates to the short message service channel. The mobile receiving device ME evaluates this information about the position of the short message service channel, parameterizes the hardware / software accordingly, receives the short messages and can display them on the display device AE.
  • GSM recommendation 03.41 describes the structure of the short message (SMS-CB-SM).
  • the content to be displayed on the display device AE is referred to as message information in accordance with the GSM recommendations.
  • Any mobile radio device that supports the short message service or the mobile receiving device ME can receive and display the short messages. So far, there has been no possibility of specifically transmitting a short message to a mobile radio device or to a mobile receiving device ME via the short message service.
  • each mobile radio device can be uniquely identified using an International Mobile Equipment Identifier (IMEI).
  • IMEI International Mobile Equipment Identifier
  • the IMEI must be stored in the device on non-volatile memory.
  • it is proposed to transmit the IMEI or a comparable identification string as part of the short message for addressing a subscriber.
  • Identification string to provide an identifier as part of the short message.
  • the identifier serves to address one or more mobile receiving devices ME in the mobile radio network.
  • the mobile receiving device ME as a GSM pager can recognize the short messages intended for it via the addressing and display them on its display device AE.
  • Reference list

Abstract

The invention relates to a mobile receiver (ME) for alphanumeric data reception from a base station of a mobile radio system, with a radio device (FE) for connection to the mobile radio system for reception, with a logic circuit (LS) connected to the radio device (FE) for digital signal processing and controlling the data receiver of the mobile radio system with the mobile receiver (ME) and with an operating surface (BO) connected to the logic circuit (LS) having at least one display unit (AE) to display the data received.

Description

Beschreibung description
Mobilempfangsgerät für alphanumerischen DatenempfangMobile receiving device for alphanumeric data reception
Die Erfindung betrifft ein Mobilempfangsgerät für alphanume¬ rischen Datenempfang sowie ein Verfahren zur Adressierung ei¬ nes solchen Mobilempfangsgerätes in einem Mobilfunknetz. Das Mobilempfangsgerät für alphanumerischen Datenempfang ist nur für einen nichtverbalen Datenempfang von einer Basisstation des Mobilfunknetzes ausgebildet.The invention relates to a mobile receiving device for alphanumeric data reception and a method for addressing such a mobile receiving device in a mobile radio network. The mobile receiving device for alphanumeric data reception is designed only for non-verbal data reception from a base station of the mobile radio network.
Das Mobilfunksystem ist vorzugsweise gemäß dem GSM-Standard (FunkübertragungsSystem gemäß den Empfehlungen des CEPT-Un- terausschusses Group Sjpecial Mobile oder Global S_ystem for Mobile Communication, GSM) oder darauf basierenden Empfehlun¬ gen wie DCS 1800 oder PCS 1900 ausgebildet.The mobile radio system is preferably designed in accordance with the GSM standard (radio transmission system in accordance with the recommendations of the CEPT subcommittee Group Special Mobile or Global System for Mobile Communication, GSM) or recommendations based thereon such as DCS 1800 or PCS 1900.
Bei einem solchen digitalen Mobilfunksystem können Kurznach¬ richten aus einer begrenzten Anzahl von alphanumerischen Zei- chen als sogenannter Kurz-Nachrichten-Dienst für alle Teil¬ nehmer (Short Message Service-Cell Broadcast, SMS-CB) über einen logischen Kanal des Mobilfunknetzes übertragen werden. Diese Kurz-Nachrichten (Short Message Service-Cell Broadcast- Short Massage, SMS-CB-SM) werden in einem zentralen Rechner (Short Message Service-Cell Broadcast-Service Center, SMS-CB- SC) gespeichert. Mit Hilfe des GSM-Netzes werden die Kurz¬ nachrichten im Netz verteilt. Im zentralen Rechner ist dabei programmiert, in welchen Zellen des GSM-Netzes die Nachricht ausgestrahlt wird, wie häufig sie wiederholt wird uäm. Mobil- funkgeräte, die den Kurz-Nachrichten-Dienst unterstützen, können die Kurz-Nachrichten empfangen und anzeigen. Das Sen¬ den solcher Kurz-Nachrichten vom Mobilfunkgerät zum GSM-Netz ist auf Grund der GSM-Spezifikationen nicht möglich.In such a digital mobile radio system, short messages from a limited number of alphanumeric characters can be transmitted as a so-called short message service for all subscribers (short message service cell broadcast, SMS-CB) via a logical channel of the mobile radio network . These short messages (Short Message Service-Cell Broadcast-Short Massage, SMS-CB-SM) are stored in a central computer (Short Message Service-Cell Broadcast Service Center, SMS-CB-SC). With the help of the GSM network, the short messages are distributed in the network. The central computer has programmed in which cells of the GSM network the message is broadcast, how often it is repeated and the like. Mobile radios that support the short message service can receive and display the short messages. Sending such short messages from the mobile radio device to the GSM network is not possible due to the GSM specifications.
Es sind sog. Pager bekannt. Dies sind mobile Empfangsgeräte, bei denen die empfangenen Daten als alphanumerischen Zeichen vorzugsweise auf einem LC-Display dargestellt werden. Der Erfindung liegt die Aufgabe zugrunde, ein Mobilempfangs- gerät für alphanumerischen Datenempfang und ein Verfahren zur Adressierung eines solchen Mobilempfangsgerätes in einem Mo- bilfunknetz anzugeben, wobei der Realisierungsaufwand mini¬ miert wird.So-called pagers are known. These are mobile receiving devices in which the data received are preferably shown as alphanumeric characters on an LC display. The invention is based on the object of specifying a mobile receiving device for alphanumeric data reception and a method for addressing such a mobile receiving device in a mobile radio network, the implementation effort being minimized.
Diese Aufgabe wird erfindungsgemäß für ein Mobilempfangsgerät durch die im Patentanspruch l und für ein Verfahren zur Adressierung durch die im Patentanspruch 2 angegebenen Merk¬ male gelöst.This object is according to the invention for a mobile receiver unit by the l and dissolved in claim for a method of addressing by the features specified in patent claim 2 Mer k ¬ male.
Im folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels beschrieben.In the following the invention will be described with reference to an embodiment shown in the drawing.
In der einzigen FIG ist ein Mobilempfangsgerät ME darge¬ stellt, das über eine Antenne A mit einem nicht näher darge¬ stellten Mobilfunksystem in Verbindung steht. Die Antenne A ist an einer Funkeinrichtung FE angeschaltet, die einen HF- Empfänger aufweist.In the single FIG, a mobile receiving device ME is shown, which is connected via an antenna A to a mobile radio system (not shown in more detail). The antenna A is connected to a radio device FE, which has an HF receiver.
Die Funkeinrichtung FE ist mit einer Logikschaltung LS ver¬ bunden. Die Logikschaltung LS dient zur digitalen SignalVer¬ arbeitung der zwischen Mobilempfangsgerät ME und Mobilfunk- system übertragenen Daten und zur Steuerung des Mobil¬ empfangsgerätes ME selbst.The radio device FE is connected to a logic circuit LS. The logic circuit LS is used for digital signal processing of the data transmitted between the mobile receiving device ME and the mobile radio system and for controlling the mobile receiving device ME itself.
Das Mobilempfangsgerät ME weist eine Bedieneroberfläche BO auf, die zumindest eine Anzeigeeinrichtung AE, beispielsweise ein LC-Display enthält. Weiter kann eine Tastatur vorgesehen sein.The mobile receiving device ME has a user interface BO which contains at least one display device AE, for example an LC display. A keyboard can also be provided.
Die Logikschaltung LS und die Bedienoberfläche BO sind über einen Datenbus DB miteinander verbunden.The logic circuit LS and the user interface BO are connected to one another via a data bus DB.
Zur Energieversorgung weist das Mobilempfangsgerät ME eine Stromversorgung SV auf. Das Mobilempfangsgerät ME für alphanumerischen Datenempfang stellt sozusagen einen GSM-Pager dar.For power supply, the mobile receiving device ME has a power supply SV. The mobile receiving device ME for alphanumeric data reception represents a GSM pager, so to speak.
Das Mobilempfangsgerät ME unterstützt erfindungsgemäß nicht die volle GSM-Funktionalität. Insbesondere ist kein Sendeteil vorgesehen, und somit fungiert das Mobilempfangsgerät ME als reines Empfangsgerät.According to the invention, the mobile receiving device ME does not support the full GSM functionality. In particular, no transmitting part is provided, and thus the mobile receiving device ME functions as a pure receiving device.
Das Mobilempfangsgerät ME weist die nach GSM vorgesehene Chipkarte nicht auf. Somit kann das Mobilempfangsgerät ME nicht die im GSM übliche Signalisierung durchführen, sondern es kann lediglich die Luftschnittstelle im Hinblick auf den Broadcast Control Channel (BCCH) und den Kurz-Nachrichten- Dienst-Kanal (SMS-CB-Kanal, CBCH) auswerten. Jede Basissta¬ tion sendet auf dem Broadcast Control Channel die Netzkennung aus, die aus dem Mobile Network Code (MNC) und dem Mobile Country Code (MCC) besteht. Der Mobile Network Code und der Mobile Country Code sind im Standard-GSM-Gerät auf der Chip- karte hinterlegt, die im Mobilempfangsgerät ME nicht vorhan¬ den ist.The mobile receiving device ME does not have the chip card provided according to GSM. Thus, the mobile receiving device ME cannot carry out the signaling customary in GSM, but can only evaluate the air interface with regard to the broadcast control channel (BCCH) and the short message service channel (SMS-CB channel, CBCH). Each base station sends out the network identifier on the broadcast control channel, which consists of the mobile network code (MNC) and the mobile country code (MCC). The mobile network code and the mobile country code are stored in the standard GSM device on the chip card, which is not present in the mobile receiving device ME.
Das Mobilempfangsgerät ME vergleicht die empfangenen Werte (MNC, MCC) für den Mobile Network Code und den Mobile Country Code mit den im Mobilempfangsgerät ME abgespeicherten Werten, die beispielsweise in einem nichtflüchtigem Speicher SP hin¬ terlegt sind. Dieser Speicher SP kann der Logikschaltung LS zugeordnet sein. Das Mobilempfangsgerät ME kann ein einzelnes MNC-MCC-Wertepaar enthalten, so wie es in GSM auf der Chip- karte der Fall ist. Das Mobilempfangsgerät kann auch eineThe mobile receiving device ME compares the received values (MNC, MCC) for the mobile network code and the mobile country code with the values stored in the mobile receiving device ME, which are stored, for example, in a non-volatile memory SP. This memory SP can be assigned to the logic circuit LS. The mobile receiving device ME can contain a single pair of MNC-MCC values, as is the case in GSM on the chip card. The mobile receiving device can also
Liste von MNC-MCC-Wertepaaren enthalten, die es mit den emp¬ fangenen MNC-MCC-Werten vergleicht. Damit wird das Mobilemp¬ fangsgerät ME an ein einziges oder an mehrere Netze angebun¬ den, bzw. auf den zugehörigen Kurz-Nachrichten-Kanal synchro- nisiert. Weiterhin strahlt jede Basisstation entsprechend den GSM- Empfehlungen im Broadcast Control Channel Konfigurationsin¬ formation aus, die den Kurz-Nachrichten-Dienst-Kanal betref¬ fen. Das Mobilempfangsgerät ME wertet diese Information über die Lage des Kurz-Nachrichten-Dienst-Kanals aus, parametriert die Hardware/Software entsprechend, empfängt die Kurz-Nach¬ richten und kann diese auf der Anzeigeeinrichtung AE darstel¬ len.Contain a list of MNC-MCC value pairs which it compares with the received MNC-MCC values. The mobile receiving device ME is thus connected to a single network or to a plurality of networks, or is synchronized to the associated short message channel. Furthermore, each base station radiates configuration information in accordance with the GSM recommendations in the broadcast control channel, which relates to the short message service channel. The mobile receiving device ME evaluates this information about the position of the short message service channel, parameterizes the hardware / software accordingly, receives the short messages and can display them on the display device AE.
Die GSM-Empfehlung 03.41 beschreibt den Aufbau der Kurz-Nach- richt (SMS-CB-SM) . Der auf der Anzeigeeinrichtung AE darzu¬ stellende Inhalt wird nach den GSM-Empfehlungen als Message- Information bezeichnet. Dabei kann jedes Mobilfunkgerät, das den Kurz-Nachrichten-Dienst unterstützt, bzw. das Mobil- empfangsgerät ME die Kurz-Nachrichten empfangen und darstel¬ len. Es besteht bisher keine Möglichkeit, eine Kurz-Nachricht über den Kurz-Nachrichten-Dienst gezielt an ein Mobilfunkge¬ rät bzw. an ein Mobilempfangsgerät ME zu übertragen.GSM recommendation 03.41 describes the structure of the short message (SMS-CB-SM). The content to be displayed on the display device AE is referred to as message information in accordance with the GSM recommendations. Any mobile radio device that supports the short message service or the mobile receiving device ME can receive and display the short messages. So far, there has been no possibility of specifically transmitting a short message to a mobile radio device or to a mobile receiving device ME via the short message service.
Nach den GSM-Empfehlungen ist jedes Mobilfunkgerät mit Hilfe einer International Mobile Equipment Identifier (IMEI) ein¬ deutig identifizierbar. Die IMEI muß nach den GSM-Empfehlun¬ gen im Gerät auf nichtflüchtigem Speicher hinterlegt sein. In einer Ausgestaltung der Erfindung wird vorgeschlagen, zur Adressierung eines Teilnehmers die IMEI oder eine vergleich¬ bare Identifizierungszeichenfolge als Teil der Kurz-Nachricht zu übertragen.According to the GSM recommendations, each mobile radio device can be uniquely identified using an International Mobile Equipment Identifier (IMEI). According to the GSM recommendations, the IMEI must be stored in the device on non-volatile memory. In one embodiment of the invention it is proposed to transmit the IMEI or a comparable identification string as part of the short message for addressing a subscriber.
Zur Adressierung eines Teilnehmers oder einer Gruppe von Teilnehmern wird weiter vorgeschlagen, als Alternative zurFor addressing a subscriber or a group of subscribers, it is further proposed as an alternative to
Identifizierungszeichenfolge (IMEI) eine Kennung als Teil der Kurz-Nachricht vorzusehen. Die Kennung dient zur Adressierung eines oder mehrerer Mobilempfangsgeräte ME im Mobilfunknetz.Identification string (IMEI) to provide an identifier as part of the short message. The identifier serves to address one or more mobile receiving devices ME in the mobile radio network.
Das Mobilempfangsgerät ME als GSM-Pager kann über die Adres¬ sierung die für ihn bestimmten Kurznachrichten erkennen und auf seiner Anzeigeeinrichtung AE darstellen. BezugszeichenlisteThe mobile receiving device ME as a GSM pager can recognize the short messages intended for it via the addressing and display them on its display device AE. Reference list
A AntenneA antenna
ME MobilempfangsgerätME mobile receiver
FE Funkeinrichtung, HF-Sender und -EmpfängerFE radio equipment, HF transmitter and receiver
LS Logikschaltung, digitale SignalVerarbeitung und SteuerungLS logic circuit, digital signal processing and control
SP SpeicherSP memory
BO Bedienoberfläche, TastaturBO user interface, keyboard
AE Anzeigeeinrichtung, LC-DisplayAE display device, LC display
SV StromversorgungSV power supply
DB Datenbus DB data bus

Claims

Patentansprüche claims
1. Mobilempfangsgerät (ME) für alphanumerischen Datenempfang von einer Basisstation eines Mobilfunksystems mit einer Funkeinrichtung (FE) zur empfangεmäßigen Anschal- tung an das Mobilfunksystem, mit einer an der Funkeinrichtung (FE) angeschalteten Logik¬ schaltung (LS) zur digitalen Signalverarbeitung und Steuerung des Datenempfanges des Mobilfunksystems mit dem Mobil- empfangsgerät (ME) , und mit einer mit der Logikschaltung (LS) in Verbindung stehenden Bedienoberfläche (BO) , die zumindest eine Anzeigeeinrichtung (AE) zur Darstellung der empfangenen Daten aufweist.1 mobile receiving device (ME) for alphanumeric data reception from a base station of a mobile radio system with a radio device (FE) for empfangεmäßigen Anschal- processing to the mobile radio system, with one at the radio device (FE) is switched Logi k ¬ circuit (LS) for digital signal processing and control of the data reception of the mobile radio system with the mobile receiving device (ME) and with the logic circuit (LS) in connection with the user interface (BO) which has at least one display device (AE) for displaying the received data.
2. Verfahren zur Adressierung von einem oder einer Gruppe von Mobilempfangsgeräten (ME) für alphanumerischen Datenempfang im Mobilfunknetz, bei dem der Datenempfang über einen Kurz-Nachrichten-Dienst- Kanal erfolgt, und bei dem in diesem Kanal zusammen mit den Daten eine Kennung2. A method for addressing one or a group of mobile receiving devices (ME) for alphanumeric Datenemp f HS in the mobile network, wherein the message-service short-channel occurs, the data receiving via a, and in which in this channel together with the data an identifier
(IMEI) zur Adressierung der Mobilempfangsgeräte (ME) übertra¬ gen wird.(IMEI) for addressing the mobile receiving devices (ME) is transmitted.
3. Verfahren nach Anspruch 2, bei dem zum Anbinden des Mobilempfangsgerät (ME)an mindestens ein Mobilfunknetz der net∑spezifische Mobile Network Code (MNC) und Mobile Country Code (MCC) verwendet werden. 3. The method according to claim 2, in which the network-specific Mobile Network Code (MNC) and Mobile Country Code (MCC) are used to connect the mobile receiving device (ME) to at least one mobile radio network.
EP97930302A 1996-06-26 1997-06-05 Mobile receiver for alphanumeric data reception Withdrawn EP0910925A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19625623 1996-06-26
DE19625623 1996-06-26
PCT/DE1997/001132 WO1997050268A1 (en) 1996-06-26 1997-06-05 Mobile receiver for alphanumeric data reception

Publications (1)

Publication Number Publication Date
EP0910925A1 true EP0910925A1 (en) 1999-04-28

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Application Number Title Priority Date Filing Date
EP97930302A Withdrawn EP0910925A1 (en) 1996-06-26 1997-06-05 Mobile receiver for alphanumeric data reception

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EP (1) EP0910925A1 (en)
CN (1) CN1110977C (en)
AU (1) AU3432797A (en)
WO (1) WO1997050268A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003037026A1 (en) * 2001-10-26 2003-05-01 Telefonaktiebolaget Lm Ericsson System and method for the positioning of a subscriber during an emergency call performed by a mobile phone without a valid sim card
CN100350808C (en) * 2003-08-26 2007-11-21 杭州义盛祥通信技术有限公司 Mobile terminal equipment auto-identification and value-added service access system

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Publication number Priority date Publication date Assignee Title
DE4332758A1 (en) * 1993-09-25 1995-03-30 Sel Alcatel Ag Radio terminal for sending and receiving short messages
US5604921A (en) * 1995-07-07 1997-02-18 Nokia Mobile Phones Ltd. Radiotelephone user interface for broadcast short message service

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9750268A1 *

Also Published As

Publication number Publication date
CN1110977C (en) 2003-06-04
WO1997050268A1 (en) 1997-12-31
CN1223061A (en) 1999-07-14
AU3432797A (en) 1998-01-14

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