EP0965202A2 - Dispositif et procede de communication sans fil en norme dect - Google Patents

Dispositif et procede de communication sans fil en norme dect

Info

Publication number
EP0965202A2
EP0965202A2 EP98916891A EP98916891A EP0965202A2 EP 0965202 A2 EP0965202 A2 EP 0965202A2 EP 98916891 A EP98916891 A EP 98916891A EP 98916891 A EP98916891 A EP 98916891A EP 0965202 A2 EP0965202 A2 EP 0965202A2
Authority
EP
European Patent Office
Prior art keywords
data
control device
pcmcia card
dect
protocol
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Withdrawn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
EP98916891A
Other languages
German (de)
English (en)
Inventor
Franz A. Dosch
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.)
Mitel Deutschland GmbH
Original Assignee
Dosch and Amand GmbH and Co KG
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 Dosch and Amand GmbH and Co KG filed Critical Dosch and Amand GmbH and Co KG
Publication of EP0965202A2 publication Critical patent/EP0965202A2/fr
Withdrawn legal-status Critical Current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 present invention relates to a device and a method for cordless communication in the DECT standard.
  • DECT is the uniform digital European standard for cordless phones. This standard builds on the previous standards CT1 and CT2 and enables digital cordless telephoning for a large number of subscribers via a base station.
  • a frequency range between 1880 MHz and 1900 MHz is provided for the radio transmission, which is divided into ten carrier frequencies of 1728 kHz each (FDMA).
  • Each carrier is additionally operated using the time slot method (TDMA), the 24 time slots provided for each carrier serving half of the connection between base station and mobile station and half of the connection between mobile station and base station.
  • TDMA time slot method
  • a DECT system thus provides 120 full-duplex channels with a channel bit rate of 32 kbps, and with a radiation power of 0.25 allows a communication radius of around 500 meters in open terrain and around 100 meters inside buildings.
  • the invention is based on the knowledge that the most suitable way to enable wireless data transmission within the DECT standard can be achieved in that the corresponding data processing device, which is preferably a PC, a laptop or a notebook, with a PCMCIA card is equipped, which processes the data from different applications running on the data processing device for wireless communication according to the DECT standard and emits or receives corresponding data and converts it into a format as required by the applications running on the data processing device .
  • the corresponding data processing device which is preferably a PC, a laptop or a notebook, with a PCMCIA card is equipped, which processes the data from different applications running on the data processing device for wireless communication according to the DECT standard and emits or receives corresponding data and converts it into a format as required by the applications running on the data processing device .
  • the PCMCIA card which manages the wireless data transmission in accordance with the DECT standard is not only able to serve as a single, common interface for a large number of applications running on the data processing device, but for Each application already prepares the data in this way, ie converts it into an appropriate format or protocol and then transmits it as required for the service addressed by the respective application.
  • the data from different applications can be transferred simultaneously via the common interface.
  • the received data from the individual services addressed are converted into a format which is suitable for the applications running on the data processing device.
  • 1 is a schematic representation of conventional wired connections of a computer device to various services
  • FIG. 2 shows a schematic illustration of a radio connection of a computer device to a network according to the prior art
  • Fig. 3 is a schematic representation of a preferred embodiment of the present invention.
  • FIG. 4 shows a schematic representation of a preferred embodiment of the PCMCIA card according to the invention.
  • FIG. 1 in which examples of different wired data communications are shown.
  • the data processing device 1 shown as a laptop has a parallel interface 2, via which wired communication with a printer 3 is made possible.
  • the second line of FIG. 1 shows a further interface 4 within the laptop 1, via which serial communication is made possible, for example with a modem 5, via which communication with the public telephone network is made possible with the intermediary of an exchange 6.
  • the third line of FIG. 1 shows a further communication between the laptop 1 and the public telephone network, this time communication via ISDN.
  • the data supplied by the laptop 1 are converted into the ISDN format either within an external device 7 or by means of an ISDN card built into the laptop 1.
  • the fourth line shows communication between two data processing devices or laptops 1, 1 'via serial interfaces 8 in each case.
  • Figure 1 illustrates that different interfaces are used to address different services, such as printers, ISDN and general serial data transmission.
  • the present invention differs from this prior art in that the individual communications are made possible wirelessly and via a single PCMCIA interface, and in that the data transmitted by data processing by radio from the PCMCIA card is already in a format or protocol be implemented as required for the service in question. Furthermore, according to the present invention, the data of different applications can be transmitted simultaneously via the common interface.
  • FIG. 2 shows a system configuration known according to the prior art, in which a data processing device 1 can communicate wirelessly with a server 9 via a radio link.
  • the server 9 can then enable a connection to a network 10, for example a LAN network, via which devices and services connected to it can be addressed.
  • a printer 11 can again be addressed, as can a modem 12, an ISDN system
  • Communication between data processing system 1 and server 9 by radio takes place by interposing two transmitting / receiving devices 15, 15 ', which usually enable radio communication by means of a carrier frequency in the GHz range.
  • the radio communication made available between the transceivers 8, 8 'in the GHz range represents pure data transmission by means of a special protocol, which is transparent to the data processing device 1 and the server 9.
  • the state of the art which is assumed to be known according to FIG. 2, differs in that although a radio connection of a data processing device 1 to different services is guaranteed, this radio connection is a pure data transmission with a special radio protocol and in a frequency range that is compatible with DECT standard is not comparable, and in particular requires the interposition of further hardware components such as the server 9, the modem 12, the ISDN system 13 etc. in order to be able to address the correspondingly desired services with the applications running on the data processing device 1.
  • the PCMCIA card provided in the data processing device 1 already converts the data of the individual applications into the suitable formats or protocols and thus transmits the data directly who provide the appropriate services
  • Hardware components such as a printer, a
  • Interposition of a server, a network, a modem and an ISDN system can be implemented. Also the
  • Radio transmission is carried out by the PCMCA card itself.
  • This transmitting / receiving device represents the base station required according to the DECT standard and provides the required functionality.
  • this base station can be of extremely simple and compact design, since the base station only has to carry out the radio communication and distribute the received data to the devices connected to it.
  • Each of the base stations 17, 18 is connected to one or more services, services being understood to mean, for example, a printer, an analog or ISDN connection to the public telephone network, etc.
  • the base stations 17, 18 already receive and send the data of the individual services in the formats or protocols suitable for the corresponding services and the radio transmission is converted into HF signals in accordance with the DECT standard.
  • the base stations 17, 18 thus essentially only have to convert the received RF signals into the intended baseband and can forward the data thus obtained directly to the corresponding services, such as one or more printers, other PCs, the public telephone network, etc.
  • the base stations 17, 18 thus perform a decoding function for the received RF signals and forwarding / switching to the individual services.
  • a plurality of base stations 17, 18 are distributed in an office building and are preferably placed in the vicinity of the units to which the corresponding base station forwards the received data or from which the base station receives data for forwarding to the mobile computer devices.
  • a base station can be set up in a printer room and ensure the forwarding of the received data to the corresponding printer.
  • Other signals that are sent by the mobile computer devices and are not intended for printers are received, for example, by another base station, which can preferably be placed in the immediate vicinity of an ISDN connection. Because of the low functionality required by the base stations, they can be made extremely compact and it is particularly advantageous to have a solution in which the base station is plugged directly into an ISDN connection or a printer.
  • the invention enables a type of network operation in an office building without having to provide a network line. All computer devices in the office building can use the PCMCIA card according to the invention to communicate with one of the several base stations and in this way exchange their data via radio in the DECT standard. An employee who moves from one room to another with his laptop can continue to communicate with other participants and access all the services offered without having to make any additional configurations.
  • the hardware components, such as printers, ISDN connections, which provide the services can also be arranged in any location, since the connection to these services is carried out by radio and therefore no new wiring is required.
  • This telephone system can be combined in an ideal manner with the system according to the invention, in particular if calls are already being made wirelessly in accordance with the DECT standard in the building.
  • Very high data rates can only be achieved in the DECT standard by bundling a very large number of channels, but with the bandwidths that can be implemented in the DECT standard by two to six channels, medium-sized data files can be easily sent.
  • the data to be sent is implemented by one on the
  • PCMCIA card contained data flow and control logic preferably down to a protocol layer, which corresponds to the data link layer in the OSI model.
  • a computer device 1 can quasi simultaneously transmit data for several different applications using the PCMCIA card according to the invention in the DECT standard on different channels in each case. Since the channels are different from one another, the print data can be sent directly to the base station which is connected to the corresponding printers and data for other services can be sent directly to the base station which is connected to these services.
  • a particular advantage of the PCMCIA card according to the invention is that, compared to conventional solutions, various wired communication interfaces are replaced by a single multi-channel radio interface, regardless of whether the computer device 1 intends serial data transmission, parallel data transmission, ISDN transmission etc.
  • channel bundling is preferably carried out for bandwidth-intensive applications, with each base station preferably being able to bundle up to six channels to support an application. This means that extended channels with 192kbps are available. Of course, bundling an even larger one is also possible Number of channels possible, so that almost any bandwidth can be reached.
  • the bundling of the channels according to the needs of an application is carried out automatically by the PCMCIA card according to the invention; the bundled transmission is transparent to the user of the corresponding computer device.
  • Fig. 4 shows schematically the basic structure of a preferred embodiment of the PCMCIA card according to the invention.
  • the card 10 has on its top 20 an RF transceiver 21, a PCMCIA plug and play module 22, a control device 23, containing data flow and signal control logic, a power control logic 24 and an RF antenna 25, which is connected to the RF transceiver via an antenna connection 26.
  • the card is connected to the corresponding computer device via a plug connector 27.
  • the card On its rear side 28, the card additionally has a ground plane board 29 as an HF reference plane.
  • the dimensions of the card preferably correspond to the PCMCIA card format type III.
  • a microprocessor 30 can be provided on the card, for example on the rear, as well as an EPROM module 31. If a microprocessor 30 and an EPROM 31 are present, the PCMCIA card can be implemented as an active interface and thus provides a completed radio transmission module (hardware and software), which is independent of the operating environment of the corresponding computer device and its performance. In the event that no dedicated microprocessor 30 is provided, the operating software for the PCMCIA card runs on the correspondingly assigned computer device itself. In any case, the operating software must be capable of providing the DECT transmission channel
  • the real-time conditions become more critical the more channels are bundled together or the more channels transmit data at the same time.
  • the present invention is equally suitable for other standards for cordless telephones, such as CTO, CT1, CT2, as well as for future developments of these standards or the DECT standard. These standards are explicitly included.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Communication Control (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Transceivers (AREA)

Abstract

Carte PCMCIA dotée d'une antenne, d'un dispositif émetteur-récepteur DECT HF, d'un dispositif de commande et d'un connecteur à fiches. Le dispositif de commande possède une logique de flux et de commande de données qui est en mesure de convertir des données reçues via le connecteur à fiches en une pluralité de formats ou de protocoles, les données déjà sur la carte étant alors converties dans le format ou protocole requis pour le service correspondant pour lequel les données sont prévues, et de mettre les données ainsi converties à la disposition du dispositif émetteur-récepteur DECT HF. Ce dernier envoie alors les données converties via l'antenne sous forme de signaux HF en norme DECT.
EP98916891A 1997-03-07 1998-03-06 Dispositif et procede de communication sans fil en norme dect Withdrawn EP0965202A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19709430 1997-03-07
DE1997109430 DE19709430A1 (de) 1997-03-07 1997-03-07 Vorrichtung sowie Verfahren zur schnurlosen Kommunikation im DECT-Standard
PCT/EP1998/001306 WO1998040976A2 (fr) 1997-03-07 1998-03-06 Dispositif et procede de communication sans fil en norme dect

Publications (1)

Publication Number Publication Date
EP0965202A2 true EP0965202A2 (fr) 1999-12-22

Family

ID=7822602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98916891A Withdrawn EP0965202A2 (fr) 1997-03-07 1998-03-06 Dispositif et procede de communication sans fil en norme dect

Country Status (4)

Country Link
EP (1) EP0965202A2 (fr)
AU (1) AU7031998A (fr)
DE (2) DE19709430A1 (fr)
WO (1) WO1998040976A2 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19735384B4 (de) * 1997-08-14 2005-03-03 Dosch & Amand Freehome Gmbh & Co. Kg Verfahren, Basisstation, PCMCIA-Karte und Vorrichtungen zur Funkanbindung mehrerer Endgeräte über eine Basisstation an eine ISDN-Schnittstelle
DE19750361A1 (de) * 1997-11-14 1999-05-20 Bosch Gmbh Robert Verfahren zur Übertragung von Informationen bzw. Endgerät zum Empfang von Daten
US6522640B2 (en) * 1998-01-28 2003-02-18 Gateway, Inc. Distributed modem for non-cellular cordless/wireless data communication for portable computers
DE19806237B4 (de) * 1998-02-16 2005-05-25 Sennheiser Electronic Gmbh & Co. Kg Transportables EDV-System zur Kommunikation mit mindestens einem zweiten EDV-Sysytem
DE19836609C2 (de) 1998-08-12 2003-02-20 Siemens Ag Verfahren zum Steuern der Datenübertragung in einem schnurlosen zwischen einer Datenendeinrichtung und einer Datenübertragungseinrichtung zur Daten-Telekommunikation betriebenen V.24-Datenübertragungssystem
DE19836608A1 (de) 1998-08-12 2000-02-17 Siemens Ag Verfahren zum Steuern der Datenübertragung in einem schnurlosen zwischen einer Datenendeinrichtung und einer Datenübertragungseinrichtung zur Daten-Telekommunikation betriebenen V.24-Datenübertragungssystem
DE19836610A1 (de) 1998-08-12 2000-02-17 Siemens Ag Verfahren zum Steuern der Datenübertragung in einem schnurlosen zwischen einer Datenendeinrichtung und einer Datenübertragungseinrichtung zur Daten-Telekommunikation betriebenen V.24-Datenübertragungssystem
DE19846952C2 (de) * 1998-10-12 2000-12-07 Dosch & Amand Gmbh & Co Kg Datenkommunikationssystem
DE19850173C1 (de) * 1998-10-30 2000-07-27 Dosch & Amand Gmbh & Co Kg Verfahren zum Bereitstellen eines drahtlosen Netzwerkes sowie einer Basisstation für ein derartiges Netzwerk
FR2799094A1 (fr) * 1999-09-23 2001-03-30 Ibm Systeme de communication sans fil entre un ordinateur portatif et un reseau de transmission de donnees
JP2001144827A (ja) * 1999-11-12 2001-05-25 Sony Corp 通信制御装置及び方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4323144A1 (de) * 1993-07-10 1995-01-19 Diehl Gmbh & Co Drahtloses Informationsübertragungssystem
FI940093A0 (fi) * 1994-01-10 1994-01-10 Nokia Mobile Phones Ltd Foerfarande foer oeverfoering av data och datagraenssnittenhet
AU2904995A (en) * 1994-06-16 1996-01-05 Apple Computer, Inc. A pc card cellular-based communication system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9840976A3 *

Also Published As

Publication number Publication date
DE29714588U1 (de) 1997-10-09
DE19709430A1 (de) 1998-09-10
WO1998040976A3 (fr) 1998-12-03
AU7031998A (en) 1998-09-29
WO1998040976A2 (fr) 1998-09-17

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