EP0976279A1 - Systeme radio formant une interface d'abonne sans fil - Google Patents

Systeme radio formant une interface d'abonne sans fil

Info

Publication number
EP0976279A1
EP0976279A1 EP97919078A EP97919078A EP0976279A1 EP 0976279 A1 EP0976279 A1 EP 0976279A1 EP 97919078 A EP97919078 A EP 97919078A EP 97919078 A EP97919078 A EP 97919078A EP 0976279 A1 EP0976279 A1 EP 0976279A1
Authority
EP
European Patent Office
Prior art keywords
area code
network
subscriber station
subscriber
exchange
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Withdrawn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
EP97919078A
Other languages
German (de)
English (en)
Inventor
Anu Virtanen
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.)
Nokia Oyj
Original Assignee
Nokia Networks Oy
Nokia Oyj
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 Nokia Networks Oy, Nokia Oyj filed Critical Nokia Networks Oy
Publication of EP0976279A1 publication Critical patent/EP0976279A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H04W84/14—WLL [Wireless Local Loop]; RLL [Radio Local Loop]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
    • H04M1/274—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc
    • H04M1/2745—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc using static electronic memories, e.g. chips
    • H04M1/27485—Appending a prefix to or inserting a pause into a dialling sequence

Definitions

  • the invention relates to a method of transmitting a number dial from a subscriber station of a radio system providing a wireless subscriber interface to an exchange in a fixed telephone network, in which method a number dial transmitted from a subscriber station is received.
  • the invention also relates to a radio system providing a wireless subscriber interface and comprising subscriber stations and a network element comprising means for transmitting telecommunication signals between subscriber stations and an exchange in a fixed telephone network, the system comprising at least one subscriber station consisting of a radio unit and a telecommunication terminal connected to a fixed telephone network radio unit.
  • the invention further relates to a network element of a radio system providing a wireless subscriber interface, the element comprising means for transmitting telecommunication signals between subscriber stations and an exchange in a fixed telephone network.
  • the present invention relates to a radio system providing a wireless subscriber interface, i.e. a WLL system (Wireless Local Loop), wherein telephone sets are connected by a radio connection through base stations and a WLL network element to the exchange of a public switched telephone network (PSTN).
  • PSTN public switched telephone network
  • a problem with known WLL systems is that in systems where the network element is connected to the fixed public switched telephone network (PSTN) via a trunk network, an upper layer trunk exchange cannot route a lo- cal call correctly if the number dial transmitted from a subscriber station does not include an area code. This means that if an attempt is made to make a local call (to e.g. the next building) from a WLL subscriber station located physically within the area code area of a fixed network, the call is incorrectly connected if the number dial does not include the area code of that specific area.
  • PSTN public switched telephone network
  • the object of the present invention is to solve the above problem and provide a method wherein a local call made from a WLL subscriber station is connected correctly also when the user does not key in an area code in connection with the number dial.
  • This goal is achieved with the method of the invention, characterized in that the received number dial is tested for an area code; if an area code is not included, a predetermined area code is prefixed to the number dial, and the number dial is forwarded to the exchange of the fixed network.
  • the invention also relates to a system to which the method of the invention can be applied.
  • the system of the invention is characterized in that the network element comprises a register including a fixed telephone network area code corresponding to the location of the subscriber station comprising said fixed network telecommunication terminal, and that the network element comprises means for retrieving said area code from the register, and for prefixing it to the number dial transmitted from the subscriber station in connec- tion with the set-up of a call originating from the subscriber station if the number dial transmitted from the subscriber station does not include an area code.
  • the invention further relates to a network element for implementing the method of the invention, and which can be utilized in the system of the invention.
  • the network element according to the invention is characterized in that it comprises a register including a fixed telephone network area code corresponding to the location of predetermined subscribers stations, and that the network element comprises means for retrieving said area code from the register, and for prefixing it to the number dial transmitted from a predetermined subscriber station in connection with the set-up of a call originating from the subscriber station if the number dial transmitted from the subscriber station does not include an area code.
  • the invention is based on the idea that when a WLL system connected to a fixed telephone network via a PSTN exchange uses a subscriber station register in which the parameters of each WLL subscriber include, be- sides other parameters, information on the PSTN area code corresponding to the physical location of a subscribe station, the network element can retrieve the necessary area code from said data base and add it as a prefix to the local number dialled. Information on the local area code of a WLL subscriber may be input into the register from the system network management centre.
  • the radio system consists of a mobile telephone system, such as a GSM system, connected to the trunk exchange of a fixed telephone network, and the network element consists of a mobile telephone exchange.
  • the mobile stations of the mobile telephone system and the WLL subscriber stations may utilize the mobile telephone system.
  • VLR register Visitor Location Register
  • the WLL system has been implemented as a part of a GSM mobile telephone system (Groupe Speciale Mobile), whereby the same radio system can be used to switch both mobile station MS calls and WLL subscriber station 1 and 2 calls.
  • GSM Global System for Mobile Communications
  • the solution according to the invention may naturally be applied to some other mobile telephone system, e.g. an NMT or DCS system (Nordisk Mobil Kon, Digital Cellular System), or alternatively in a WLL system exclusively designed for switching WLL subscriber station calls.
  • a mobile telephone exchange 4 of a mobile telephone system serves as the network element of the WLL system, the exchange being connected to a PSTN network trunk exchange 3.
  • the mobile telephone exchange is in connection with the subscriber stations MS, 1 , and 2 of the radio system via base station controllers BSC and base stations BTS.
  • the mobile telephone exchange 4 comprises a VLR register for maintaining information on mobile stations "temporarily" roaming the geographical area covered by the system in accordance with GSM specifications.
  • the VLR register also serves as the subscriber station register 10 of the WLL system, i.e. information on the WLL subscriber stations 1 and 2 utilizing the mobile telephone system of Figure 1 is stored in said register.
  • the WLL subscriber stations are physically located in the areas A and B of the different directory areas of the fixed telephone network.
  • Both of the WLL subscriber stations 1 and 2 consist of a conventional telecommunication terminal 5 of a type used in fixed telephone networks, such as a telephone, a telefax terminal or a computer/modem combi- nation linked to a WLL terminal 6 by means of a two-wire line.
  • the terminal 6 comprises signal processing means for adapting the speech path to the radio channel.
  • signal processing means include e.g. a radio part comprising an antenna, a radio transmitter and a radio receiver, and a teleadapter for adapting the radio part to a conventional telecommunication terminal 5 of a fixed telephone network.
  • the subscriber station 1 uses radio signals to communicate with a base station 7 via which calls are switched through the base station controller BSC to the mobile telephone exchange and further to the trunk exchange 3 of the PSTN network (Public Switched Telephone Net- work), i.e. a fixed telephone network.
  • the parameters of the WLL subscriber stations are stored in the VLR register 10 of the mobile telephone exchange 4. Said parameters also include information on the area code of the fixed PSTN local directory area corresponding to the location of a subscriber. The locations of the WLL subscriber stations are known because the WLL subscriber stations are installed permanently at specific locations, similarly as is a telephone 8 of the PSTN network.
  • the mobile telephone exchange 4 When a call is made from a WLL subscriber station 2 located in the area of the local directory area A to the telephone 8 of the PSTN network, the mobile telephone exchange 4 identifies it as a WLL subscriber station on the basis of the information in the VLR register. The mobile telephone exchange 4 then tests the number dial received from the subscriber station 2 for an area code. If the dialled number does not include an area code, i.e. in Finland, for example, this may be concluded by the first number of the dialled number series being between 2 and 8, the mobile telephone exchange retrieves from the VLR register 10 the area code stored therein for subscriber station 2; the area code corresponding to the area code of area A in the case of Figure 1.
  • the mobile telephone exchange then adds the area code retrieved as a prefix to the number dial transmitted from the subscriber station before routing the call further.
  • the call is switched from the trunk exchange 3 of the fixed telephone network via the PSTN network to the telephone 8.
  • the mobile telephone exchange may retrieve the local number from the VLR register immediately having received a SETUP message from subscriber A, i.e. the subscriber station 2, this being the time when the mobile telephone exchange retrieves the other parameters of subscriber A from the VLR register.
  • Call set-up from the GSM system to a fixed telephone network has been described in more detail in e.g. GSM specification part 09.09 (GSM 09.09 - Version 3.0.0. - point 3.2.2.1.1) and is hence not described in any more detail here.

Landscapes

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

Abstract

Un système radio fournissant une interface d'abonné sans fil comprend des postes d'abonnés (1, 2, MS), ainsi qu'un élément de réseau (4) comportant des moyens de transmission de signaux de télécommunications entre les postes d'abonnés et un central (3) de réseau téléphonique fixe, ledit système comportant ainsi un poste d'abonné (1, 2) constitué d'une unité radio (6) et d'un terminal (5) de télécommunications de réseau téléphonique fixe relié à l'unité radio. Afin d'acheminer un appel local correctement même lorsque l'abonné ne compose pas un indicatif régional, l'élément de réseau (4) comprend un enregistreur (10) contenant l'indicatif régional du réseau téléphonique fixe correspondant à l'emplacement (A, B) du poste d'abonné (1, 2). De plus, l'élément de réseau (4) comprend des moyens permettant d'extraire un indicatif régional de l'enregistreur (10) et de l'ajouter sous forme de préfixe à la numérotation du numéro transmise à partir du poste d'abonné (1, 2) en liaison avec l'établissement d'un appel, si la numérotation du numéro transmise par le poste d'abonné (1, 2) ne comporte pas d'indicatif régional.
EP97919078A 1996-09-17 1997-09-16 Systeme radio formant une interface d'abonne sans fil Withdrawn EP0976279A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI963676A FI105066B (fi) 1996-09-17 1996-09-17 Johdottoman tilaajaliittymän muodostava radiojärjestelmä
FI963676 1996-09-17
PCT/FI1997/000551 WO1998012892A1 (fr) 1996-09-17 1997-09-16 Systeme radio formant une interface d'abonne sans fil

Publications (1)

Publication Number Publication Date
EP0976279A1 true EP0976279A1 (fr) 2000-02-02

Family

ID=8546673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97919078A Withdrawn EP0976279A1 (fr) 1996-09-17 1997-09-16 Systeme radio formant une interface d'abonne sans fil

Country Status (7)

Country Link
EP (1) EP0976279A1 (fr)
JP (1) JP2001500702A (fr)
CN (1) CN1231109A (fr)
AU (1) AU4304597A (fr)
CA (1) CA2265685A1 (fr)
FI (1) FI105066B (fr)
WO (1) WO1998012892A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100428810C (zh) * 2005-05-19 2008-10-22 华为技术有限公司 一种通过移动通信网络呼叫固定终端的实现方法及系统
CN113596725A (zh) * 2021-08-06 2021-11-02 上海中通吉网络技术有限公司 基于移动终端定位匹配固定电话区号的方法及设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5157719A (en) * 1990-03-12 1992-10-20 Advanced Cellular Telcom Corp. Automatic area code dialing apparatus and methods particularly adapted for cellular or other types of telephone systems
CO4180414A1 (es) * 1993-08-31 1995-06-07 Bellsouth Corp Sistema de comunicaciones radiotelefonicas con acceso direc- to a los circuitos de enlace entre oficinas y circuito de interfase para este fin
US5559862A (en) * 1994-09-02 1996-09-24 Mobile Telecommunication Technologies Mobile paging telephone call back system and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9812892A1 *

Also Published As

Publication number Publication date
JP2001500702A (ja) 2001-01-16
FI963676A (fi) 1998-03-18
WO1998012892A1 (fr) 1998-03-26
FI105066B (fi) 2000-05-31
FI963676A0 (fi) 1996-09-17
CN1231109A (zh) 1999-10-06
AU4304597A (en) 1998-04-14
CA2265685A1 (fr) 1998-03-26

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