WO1994016531A1 - Configuration pour etablir des telecommunications dans un systeme de communication sans fil par transmission d'appel - Google Patents

Configuration pour etablir des telecommunications dans un systeme de communication sans fil par transmission d'appel Download PDF

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Publication number
WO1994016531A1
WO1994016531A1 PCT/DE1993/001196 DE9301196W WO9416531A1 WO 1994016531 A1 WO1994016531 A1 WO 1994016531A1 DE 9301196 W DE9301196 W DE 9301196W WO 9416531 A1 WO9416531 A1 WO 9416531A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio
assigned
switching
switching unit
radio switching
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.)
Ceased
Application number
PCT/DE1993/001196
Other languages
German (de)
English (en)
Inventor
Klaus Wille
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Priority to EP94901758A priority Critical patent/EP0677231A1/fr
Publication of WO1994016531A1 publication Critical patent/WO1994016531A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/12—Reselecting a serving backbone network switching or routing node
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/16—WPBX [Wireless Private Branch Exchange]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13095—PIN / Access code, authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13097—Numbering, addressing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13098—Mobile subscriber
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13204—Protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1322—PBX
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1328—Call transfer, e.g. in PBX
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection

Definitions

  • the invention relates to an arrangement for producing telecommunications connections.
  • a communication system is already known from European patent specification 0 226 610, which consists of a private branch exchange, a radio switching center, stationary units (base stations) and cordless telephones.
  • the radio switching center connected to the private branch exchange is connected to several stationary units via connecting lines.
  • the cordless telephones can set up telecommunications connections regardless of their local assignment to one of these base stations; this also applies to connections which are set up to the cordless telephones.
  • a cordless telephone which is involved in a telecommunication connection, changes its location in such a way that the reception or transmission quality decreases over the previously activated base station and that the transmission or reception quality is improved at the same time via another base station, this is done as part of the existing telecommunications connection, a switchover to the base station, via which the better quality of the connection is achieved ("handover").
  • the known communication system does not allow any telecommunication connections that go beyond the area of the private branch exchange or through different radio switching centers.
  • the object of the invention is to provide an arrangement of the type mentioned at the beginning, which includes telecommunications connections Participation of at least one cordless phone in one
  • Telecommunication connections are used in such a complex system of switching systems known per se, without interfering with the switching-related control procedures.
  • the invention is distinguished by the particular advantage that the cordless telephones involved in the telecommunications connections have the performance features assigned to them in their original switching system (PBX1) available at all locations in the range of action of all base stations without restriction. This also applies to bass stations that are connected to other than the original radio switching unit.
  • PBX1 original switching system
  • Fig. 1 shows an arrangement according to the invention with a first
  • Connecting path 2 shows an arrangement according to the invention with a second connection path
  • 3 shows the connection structure in a handover procedure.
  • the communication system shown in Fig. 1 consists of a first and a second switching system PBX1, PBX2.
  • Such switching systems are, for example, from the Siemens documents "Hicom 300 System, Product Data”, Ordering No. A 19100-K3161-GA30-X- 7600, pages 55-57 and "ISDN in the Office” Special Issue of telcom report and Siemens Magazine con 1985, pages
  • a first radio switching unit (Radio Exchange) RE1 is assigned to the first switching system PBXl. arranges and connects to the switching system PBX1 via known ISDN subscriber connection lines.
  • the first radio switching unit RE1 is connected to at least one base station BSL1, possibly also to a plurality of base stations BSL1 ... BSLn, each via a connecting line.
  • the second switching system PBX2, the second radio switching unit RE2 and the base stations BS2.1,... BS2.m are structured in a corresponding manner.
  • Connections via public and private networks can be established between the first and the second switching system.
  • the radio switching units RE1, RE2 each contain a controller CRE1, CRE2 and memory MRE1, MRE2, which are used to hold data, the fixed assignment of mobile terminals PT1, ... and base stations as well as a current local assignment of the mobile terminals to the radio switching units describe.
  • Each terminal is always assigned to exactly one radio switching unit as the original (home) radio switching unit.
  • the assignment results from terminal-specific identification information, which is stored in the respective radio switching unit and the respective terminal and is exchanged between the mobile terminals, the base stations and the sub-switching units in preparation for and during the connection.
  • a fixed internal or external subscriber station FT1 and FT2 is shown for each switching system PBX1, PBX2.
  • the arrangement according to the invention realizes the performance features known as "roaming" and "handover" for cordless telephone systems.
  • the "roaming" feature is that the current local assignment of a mobile terminal, which changes from the radio range of a first base station to the radio range of a second base station, is recorded by the system, with no voice or user data connection during this change .
  • the "handover" feature is that a
  • Voice or user data connection is continued without interruption if a mobile terminal changes during the connection from the radio area of a first base station to the radio area of a second base station.
  • the controls CRE1 and CRE2 of the two radio switching units RE1, RE2 are assigned a control program which is designed in such a way that the telecommunications connections are independent of the location of the mobile terminal involved in the respective telecommunications connection, e.g. PT1, via the radio switching unit assigned to this terminal on the basis of the identification information, e.g. REl.
  • This is in Fig. 1 for the case of an incoming or outgoing telecommunication connection between a fixed one
  • FT1 of the first switching system PBX1 and the mobile terminal PT1 is shown, which is located in the area of a "foreign" base station BS2.m.
  • the connection path is shown in dashed lines: FT1-PBX1-RE1-PBX1 (eg connection line set TRD-TR2 / PBX2 (connection line set TR2 of the switching system PBX2) -RE2-BS2.m-PTl.
  • the first one is controlled by a controller Switching system PBX1 establishes a first connection to the first radio switching unit RE1 on the basis of the telephone number dialed by PTl from PTl.
  • the controller CRE1 of this radio switching unit unit REl initiates a second connection that the
  • connection line set TR1 ISDN network interface of ISDN telecommunications systems
  • the phone number of the terminal PT1 is given as the "Called Party" address and the phone number of the second radio switching unit RE2 as the "Connected Party” address.
  • the radio switching unit RE1 links the first connection from PBXl to REl with the second connection from REl via RE2 to PTl.
  • the first and the second connection form the total connection from FTl to PTl.
  • connection path shown in dashed lines in FIG. 1 thus does not lead from FT1 within the switching system PBX1 directly via the switching matrix to the connection line set TR1 but first to the first radio switching center RE1 and only afterwards to the connection line set TR1.
  • the properties assigned to a mobile subscriber, such as a fixed subscriber, such as authorizations, activated performance features, switching statuses, etc., in the switching system can thus be controlled in the same way as for a fixed subscriber. This means that the switching system can treat connections for mobile subscribers with all the features without special measures, such as connections for fixed subscribers.
  • connection path 2 shows the connection path in the event that an (internal or external) fixed subscriber station FT2, starting from the second switching system PBX2, establishes a connection to the mobile terminal PT1, which is also the same as in the case illustrated in FIG. 1 is in the radio range of the "foreign" base station BS2.m.
  • This connection path is represented as follows: FT2-PBX2 (TR2) -TRl / PBXl-REl-PBXl / TRl-TR2 / PBX2-RE2-BS2.m-PTl.
  • Each base station BSl.l, ... BSl.n BS2.1, ... BS2.m identifies the mobile terminals PT1, ... located in its radio area on the basis of the respective identification information. If the terminal PT1 changes its location, for example, from the radio range, for example from the base station BS1.1 assigned to it, to the radio range from BS2.m, then this base station BS2.m reports the current presence of the terminal PT1 to the first radio switch permanently assigned to this terminal PT1 ⁇ development unit REl.
  • the controller CRE2 of the radio switching unit RE2 accesses the corresponding information that is stored in the memory MRE2 and establishes a connection to the first radio switching unit RE1, where this information is stored in the memory MRE1.
  • These signaling data connections between RE2 and RE1 are established as shown in FIGS. 1 and 2 for voice or user data connections via PBX2 and PBXl; alternatively, the signaling data are transmitted via a separate data line L-V.24 (Fig. 3).
  • Handover procedures pursue the goal of making the switchover from the previously used connection path via RE1 to the new path via RE2 without interruption when changing the radio range.
  • the transmission path is interrupted by different the run times of the messages for the control of the switchover.
  • These signaling messages are exchanged between the mobile terminal PT1 and the radio area units RE1 and RE2.
  • the terminal PTl transmits a handover request via the base station BS2.m to the radio switching unit RE2;
  • the terminal PT1 triggered by issuing the handover request, the terminal PT1 establishes a connection via the base station BS2.m to the second radio switching unit RE2 and goes into the so-called broadcast transmission mode to the radio switching centers RE1, RE2;
  • the radio switching unit RE2 establishes a connection to the first radio switching unit RE1, which corresponds to a subscriber-initiated connection;
  • RE1 also goes to RE2 after the connection to broadcast transmission has been established
  • RE2 then sends the confirmation message via BS2 to the terminal PT1 that the new path has been set up via RE2;
  • the terminal PTl ends the parallel transmission to base st 'ation BSl.l
  • REI also stops the parallel transmission to BSl.l
  • the connection via BS1 builds off.
  • the advantage of the procedure according to the invention for handover between two different radio switching units RE1 and RE2 is that the control of the ISDN telecommunication system for handover does not have to perform any specific functions.
  • the connection between the radio switching units RE1 and RE2 as part of the overall connection between FTl and PTl corresponds to an ISDN connection that is initiated by stationary subscribers of a switching system with several telecommunication systems.
  • the radio switching units RE1, RE2 can be connected to a separate data line LV.24, the control program assigned to the controllers CRE1, CRE2 of the radio switching units RE1, RE2 being designed in such a way that signaling data indicating the current locations of mobile terminals PT1, ... designate to be transmitted over this separate data line.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un agencement permettant d'établir des télécommunications dans un système de communications, consistant au moins en un premier central téléphonique (PBX1) et en un second (PBX2). Une première unité radiotéléphonique (RE1) est allouée au premier central téléphonique (PBX1) et une seconde unité radiotéléphonique (RE2) est allouée au second central téléphonique (PBX2). Les première et seconde unités radiotéléphoniques (RE1, RE2) sont chacune reliées à au moins une station de base (BS1.1,...BS1.n; BS2.1,...,BS2.2m). Des terminaux mobiles (PT1,...) sont alloués chacun à une unité radiotéléphonique (RE1, RE2) comme unité radiotéléphonique d'origine en raison d'une information d'identification qui leur est propre. Une commande (CRE1, CRE2) munie d'un programme de commande pour établir les télécommunications est allouée à chacune des unités radiotéléphoniques (RE1, RE2). Au moins un terminal mobile (PT1) prend part aux télécommunications. Le programme de commande alloué aux commandes (CRE1, CRE2) de l'unité radiotéléphonique (RE1, RE2) se présente de manière à ce que les télécommunications soient établies d'après l'information d'identification, indépendamment de l'endroit où se trouve le terminal mobile (PT1) participant à la télécommunication, par l'intermédiaire de l'unité radiotéléphonique (RE1) d'origine allouée audit terminal (PT1).
PCT/DE1993/001196 1993-01-04 1993-12-14 Configuration pour etablir des telecommunications dans un systeme de communication sans fil par transmission d'appel Ceased WO1994016531A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94901758A EP0677231A1 (fr) 1993-01-04 1993-12-14 Configuration pour etablir des telecommunications dans un systeme de communication sans fil par transmission d'appel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEG9300044.8U 1993-01-04
DE9300044U DE9300044U1 (de) 1993-01-04 1993-01-04 Anordnung zur Herstellung von Fernmeldeverbindungen

Publications (1)

Publication Number Publication Date
WO1994016531A1 true WO1994016531A1 (fr) 1994-07-21

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PCT/DE1993/001196 Ceased WO1994016531A1 (fr) 1993-01-04 1993-12-14 Configuration pour etablir des telecommunications dans un systeme de communication sans fil par transmission d'appel

Country Status (3)

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EP (1) EP0677231A1 (fr)
DE (1) DE9300044U1 (fr)
WO (1) WO1994016531A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19531999A1 (de) * 1995-08-30 1997-03-06 Siemens Ag Mehrzellenfunksystem mit PBX-Peripheriebaugruppen
US5749053A (en) * 1994-08-24 1998-05-05 Hitachi, Ltd. Mobile communication network and control method thereof
EP0667085A4 (fr) * 1993-07-28 1999-02-03 Motorola Inc Procede et appareil de reduction d'interruption audio lors d'un transfert dans un systeme de communication.
US5956652A (en) * 1994-12-30 1999-09-21 Telefonaktiebolaget Lm Ericsson System and method relating to cellular communications
EP0833530A3 (fr) * 1996-09-26 1999-11-24 Siemens Aktiengesellschaft Méthode pour l'établissement d'une connexion vers un équipement terminal "sans fil" relié à un réseau de communications
EP0760588A3 (fr) * 1995-08-28 1999-12-29 Siemens Aktiengesellschaft Méthode et dispositif d'établissement de liaisons de télécommunication
US6141562A (en) * 1994-12-30 2000-10-31 Telefonaktiebolaget Lm Ericsson System and method relating to cordless communications
EP1180905A1 (fr) * 2000-08-18 2002-02-20 Samsung Electronics Co., Ltd. Procédé pour fournir un service d'itinérance parmi des centres de commutation mobile privés
WO2004088924A1 (fr) * 2003-04-04 2004-10-14 Siemens Aktiengesellschaft Procede de commande de liaisons de communication radio dans un systeme de communication

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4344454A1 (de) * 1993-12-24 1995-06-29 Philips Patentverwaltung Mobilfunksystem mit Mitteln für eine nahtlose Verbindungsübergabe
CA2137384A1 (fr) * 1994-01-03 1995-07-04 Gary Len Griffith Dispositif de commutation pour transferer des terminaux de communication sans fil d'une station de base a une autre par des processus utilises avec les terminaux cables
DE69534650T2 (de) * 1995-08-09 2006-07-06 Hewlett-Packard Development Co., L.P., Houston Privates Funkkommunikationssystem
US5787360A (en) * 1995-08-09 1998-07-28 Hewlett-Packard Company Telecommunications systems
EP0758187B1 (fr) * 1995-08-09 2005-05-11 Hewlett-Packard Company, A Delaware Corporation Station de base radio pour un réseau de télécommunication privé
EP0758189B1 (fr) * 1995-08-09 2005-03-16 Hewlett-Packard Company, A Delaware Corporation Réseau de télécommunication privé sans fil
US6161019A (en) * 1995-08-28 2000-12-12 Siemens Aktiengesellschaft Communication system with cordless system units connected to a communication network

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0433256A2 (fr) * 1989-12-15 1991-06-19 Telefonaktiebolaget L M Ericsson Arrangement de télécommunication comprenant un réseau commuté de télécommunication et un terminal radio portable

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0433256A2 (fr) * 1989-12-15 1991-06-19 Telefonaktiebolaget L M Ericsson Arrangement de télécommunication comprenant un réseau commuté de télécommunication et un terminal radio portable

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0667085A4 (fr) * 1993-07-28 1999-02-03 Motorola Inc Procede et appareil de reduction d'interruption audio lors d'un transfert dans un systeme de communication.
US5749053A (en) * 1994-08-24 1998-05-05 Hitachi, Ltd. Mobile communication network and control method thereof
US5956652A (en) * 1994-12-30 1999-09-21 Telefonaktiebolaget Lm Ericsson System and method relating to cellular communications
US6141562A (en) * 1994-12-30 2000-10-31 Telefonaktiebolaget Lm Ericsson System and method relating to cordless communications
EP0760588A3 (fr) * 1995-08-28 1999-12-29 Siemens Aktiengesellschaft Méthode et dispositif d'établissement de liaisons de télécommunication
DE19531999A1 (de) * 1995-08-30 1997-03-06 Siemens Ag Mehrzellenfunksystem mit PBX-Peripheriebaugruppen
EP0762790A3 (fr) * 1995-08-30 1999-11-24 Siemens Aktiengesellschaft Système radio multi-cellulaire avec autocommutateur privé et modules périphériques
US6138015A (en) * 1995-08-30 2000-10-24 Siemens Aktiengesellschaft Multi-cell radio system with PBX periphery assemblies
EP0833530A3 (fr) * 1996-09-26 1999-11-24 Siemens Aktiengesellschaft Méthode pour l'établissement d'une connexion vers un équipement terminal "sans fil" relié à un réseau de communications
EP1180905A1 (fr) * 2000-08-18 2002-02-20 Samsung Electronics Co., Ltd. Procédé pour fournir un service d'itinérance parmi des centres de commutation mobile privés
US6912388B2 (en) 2000-08-18 2005-06-28 Samsung Electronics Co., Ltd. Providing roaming service among private mobile switching centers
WO2004088924A1 (fr) * 2003-04-04 2004-10-14 Siemens Aktiengesellschaft Procede de commande de liaisons de communication radio dans un systeme de communication

Also Published As

Publication number Publication date
EP0677231A1 (fr) 1995-10-18
DE9300044U1 (de) 1993-05-19

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