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WO1994001976A1 - Systemes telephoniques mobiles sans fil - Google Patents

Systemes telephoniques mobiles sans fil Download PDF

Info

Publication number
WO1994001976A1
WO1994001976A1 PCT/GB1993/001317 GB9301317W WO9401976A1 WO 1994001976 A1 WO1994001976 A1 WO 1994001976A1 GB 9301317 W GB9301317 W GB 9301317W WO 9401976 A1 WO9401976 A1 WO 9401976A1
Authority
WO
WIPO (PCT)
Prior art keywords
handset
base station
call
network
cds
Prior art date
Application number
PCT/GB1993/001317
Other languages
English (en)
Inventor
David Frederick Stowell
Peter Russel-Jones
Graham Crisp
Original Assignee
Gpt Limited
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 Gpt Limited filed Critical Gpt Limited
Priority to KR1019940700687A priority Critical patent/KR940702333A/ko
Priority to EP93913415A priority patent/EP0602208A1/fr
Priority to JP6503063A priority patent/JPH06510651A/ja
Publication of WO1994001976A1 publication Critical patent/WO1994001976A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration

Definitions

  • This invention relates to a mobile cordless telephone system of the kind in which a handset is linked to the public switched network system by radio link via a local base station.
  • the local base station is connected to the network and each handset has a unique calling code.
  • Telepoint One particular form of mobile cordless telephone system is that known under the trade name "Telepoint" in which the base stations are located at various sites such as Railway Stations, Airports, Office and Housing blocks. Anybody with a personal handset within the range of a base station can then set up a call into the public network system and these people can also receive a call within that range.
  • a mobile cordless telephone system of the kind in which a handset is linked to a public switched network system by a radio link via a local base station connected to the network, and in which each handset has a unique calling code, which system includes call diversion switch means between a base station and the network and which in operation includes the set of a handset user, registering the presence of the handset to the most appropriate adjacent base station with the switch means by sending a signal from the handset over a first channel to the base station announcing its presence and the base station registering this information with the call diversion switch means which checks within the network against the handset users unique calling code and creates a personal identification code and communicates this to the base station.
  • the call diversion switch means may include voice mail facilities which can transmit messages which are waiting to the handset user.
  • Every handset user who subscribes to the two way service has a personal telephone number which normally routes calls to a call diversion switch 1 (CDS).
  • This switch may have Voice Mail and/or paging services normally connected to the personal number.
  • a key feature of this switch 1 is the ability to access it by inputting the subscriber's personal number and, after the exchange of suitable security passwords if required, input a new telephone number to which all subsequent calls will then be diverted.
  • a Management System 2 (MS 2) is essentially the same as that used for existing 'Telepoint' systems. The significant addition is that each users personal telephone number in the CDS 1 will be recorded against their portable handset unique identification.
  • a local Base Station 3 in this example will permit the registration of one Handset Unique Identification against each network line number at a time. In addition it will be capable of calling the CDS 1. Location registration will only be held for controlled periods whilst the handset is within range.
  • a handset 4 connects with the Base Station 3 by a suitable radio link and a normal 'phone 5 is directly linked to the public network 6 and via that to the switch 1.
  • a handset user with handset 4 uses a manual location registration procedure to alert the Base Station 3 to his presence and desire to receive incoming calls.
  • the Location Registration will cause the base station 3 to make a registration call to the MS 2 with an additional indication that this relates to Two Way calling.
  • the MS 2 provides the registration response to the Base Station 3 it will, from the record it holds against the portable handset unique identification, include the Handset user's Personal number and any password in the response. This may need to be subject to some form of security coding or it could alternatively be input as part of the location registration procedure at the base station 3.
  • the base station 3 will call the CDS 1 using the Personal number and password supplied by the MS 2. At this stage, if voice mail facilities are provided in the CDS 1, the handset user may be alerted to any waiting messages. The base station 3 will then use the network number of the line on which it is calling to invoke the call diversion service and then release the call.
  • a person using phone 5 wishing to reach a subscriber's handset 4 will dial the personal number of the handset 4. This will route the call via the Public Switched Telephone Network (PSTN) 6 to the CDS 1.
  • PSTN Public Switched Telephone Network
  • the CDS 1 will on recognising an incoming call to a called number obtain the called number and activate a call diversion to a base station. If the handset location has been registered as above the CDS 1 will make an outgoing call to the base station 3 using the network line number that the base station provided on location registration. The CDS 1 does not need to answer the call at this stage.
  • the base station 3 When the base station 3 receives the incoming call it will use the one handset unique identification registered against that line to call the relevant handset 4. Since no other information needs to pass between the CDS 1 and the Base Station 3 at this stage the call is not answered.
  • Unsuccessful calls may also be answered after a suitable time-out at the CDS 1 and the calls diverted to an announcement or voice messaging system.
  • the leg of the call from the CDS 1 to the base station 3 will be cleared and no charge incurred by either party.
  • De-registration of location at the Base Station 3 may occur due to one or more of the following:- i) Manual De-Registration of location. ii) Failure of a predetermined number of attempts by the base station to verify the presence of the handset by non-call related establishments. iii) Unable to alert handset on incoming call attempts(s). iv) Expiry of a timer in the Base Station.
  • the handset user 4 may be altered and given the opportunity to re-register shortly before the expiry of iv).
  • a call will be made to the CDS 1 to de-activate the call diversion.
  • the cost of this call would be included in the charge for activation of the Two Way service. Incoming callers would then revert to voice mail etc.
  • the base station 3 will not overwrite the information against a network line unless it is required for another user. Lines are allocated in rotation. If the base station 3 already has the personal number associated with a handset unique identification it can re-invoke diversion at the CDS 1 without referring to the MS 2 again.
  • De-registration of location i.e. removal of the call diversion
  • De-registration of location may occur due to one or more of the following:- v) Receipt of a De-Registration message from the Base Station 3 as described above. vi) Unable to alert handset 4 on incoming call attempt(s). vii) Expiry of a time-out approximately the same value as iv) above. This will save the base station calling in to de-register. viii) A Location registration call being received from another base station. This acts as a new location registration.
  • the base station may take the form of a Switch with Telepoint facilities added. Access from the network to this type of base station would be using call diversion from the Network. Once again each handset registered at this location would be associated with a unique telephone number and therefore effectively with a network line number. This number would be used for diversion at the CDS 1 as before and the proposal is thus fully compatible.
  • CDS 1 comprises of an adjunct switch, or indeed several switches distributed in different locations depending on Traffic requirements
  • an alternative approach is to use data connected network links directly to the MS 2 as shown in Figure 2 to which reference is now made.
  • the system as described above uses manual location registration. It will work equally effectively with automatic methods. Such methods may employ a Beacon to indicate the location of a base station since unlike Cellular and DECT systems CT2 base stations used in 'Telepoint 1 only transmit when carrying traffic. Alternatively the Handset may "silently poll" for a base station.
  • the invention gives a cheap and effective way of registering the presence of a handset and enabling contact to be made swiftly with it without any particular development in the switch means being necessary.
  • Existing voice mail systems can be used and no separate location register is necessary.

Landscapes

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

Abstract

L'invention concerne un système téléphonique mobile sans fil dans lequel un combiné (4) est relié au moyen d'une liaison radio à un réseau public à commutation (6) par l'intermédiaire d'une station de base (3) raccordée au réseau, chaque combiné (4) possédant un code d'appel unique. Ledit système se compose d'un commutateur de renvoi d'appels (1) situé dans une connexion de ligne entre une station de base (3) et un réseau (6), et, en exploitation, le combiné (4) d'un utilisateur enregistre avec le commutateur de renvoi d'appels (1) la présence dudit combiné dans la station de base adjacente appropriée (3) en envoyant un signal annonçant sa présence à ladite station de base (3) par un premier canal, la station de base (3) enregistre cette information et l'envoie dans le commutateur de renvoi d'appels (1) qui procède à une vérification dans le réseau (6) en fonction du code d'appel unique de l'utilisateur du combiné, crée un numéro d'identification personnel et le communique à la station de base (3).
PCT/GB1993/001317 1992-07-03 1993-06-23 Systemes telephoniques mobiles sans fil WO1994001976A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019940700687A KR940702333A (ko) 1992-07-03 1993-06-23 이동 무선 전화 시스템(mobile cordless telephone systems)
EP93913415A EP0602208A1 (fr) 1992-07-03 1993-06-23 Systemes telephoniques mobiles sans fil
JP6503063A JPH06510651A (ja) 1992-07-03 1993-06-23 移動コードレス電話方式

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB929214186A GB9214186D0 (en) 1992-07-03 1992-07-03 Mobile cordless telephone systems
GB9214186.0 1992-07-03

Publications (1)

Publication Number Publication Date
WO1994001976A1 true WO1994001976A1 (fr) 1994-01-20

Family

ID=10718171

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1993/001317 WO1994001976A1 (fr) 1992-07-03 1993-06-23 Systemes telephoniques mobiles sans fil

Country Status (6)

Country Link
EP (1) EP0602208A1 (fr)
JP (1) JPH06510651A (fr)
KR (1) KR940702333A (fr)
CN (1) CN1081802A (fr)
GB (1) GB9214186D0 (fr)
WO (1) WO1994001976A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995020864A1 (fr) * 1994-01-28 1995-08-03 Telia Ab Amenagement d'un systeme de telecommunications
EP0690647A2 (fr) 1994-06-30 1996-01-03 AT&T Corp. Structure hiérarchique de noeuds de communication pour les besoins d'authentification avec stockage des données d'authentification
EP0690649A2 (fr) 1994-06-30 1996-01-03 AT&T Corp. Téléphone mobile avec mémorisation du numéro de noeud de commutation nominal
EP0690648A2 (fr) 1994-06-30 1996-01-03 AT&T Corp. Stockage temporaire des données d'authentification pour système de communications personnel
EP0690646A2 (fr) 1994-06-30 1996-01-03 AT&T Corp. Pré-localisation des données d'authentification dans un système de communications personnel
US5758284A (en) * 1995-11-30 1998-05-26 Lucent Technologies Inc. Increasing the capacity of a personal communication service system by utilization of the bridged shared line appearance feature
US5758285A (en) * 1995-11-30 1998-05-26 Lucent Technologies Inc. Increasing the capacity of a personal communication service system by multiple connections to individual telephone links
US6192231B1 (en) 1996-07-11 2001-02-20 British Telecommunications Public Limited Company Telephone apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19640008C1 (de) * 1996-09-27 1998-03-12 Siemens Ag Verfahren für eine DECT-Basisstation und ein DECT-Mobilteil zur Identifizierung des DECT-Mobilteils

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2234649A (en) * 1989-04-27 1991-02-06 Stc Plc Personal communications systems
EP0456547A1 (fr) * 1990-05-09 1991-11-13 Dassault Automatismes Et Telecommunications Dispositif et procédé d'interconnexion téléphoniques pour réseau de communication à stations autonomes
WO1992003006A1 (fr) * 1990-08-03 1992-02-20 Motorola, Inc. Systeme de communication par telephone sans fil a deux voies

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2234649A (en) * 1989-04-27 1991-02-06 Stc Plc Personal communications systems
EP0456547A1 (fr) * 1990-05-09 1991-11-13 Dassault Automatismes Et Telecommunications Dispositif et procédé d'interconnexion téléphoniques pour réseau de communication à stations autonomes
WO1992003006A1 (fr) * 1990-08-03 1992-02-20 Motorola, Inc. Systeme de communication par telephone sans fil a deux voies

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995020864A1 (fr) * 1994-01-28 1995-08-03 Telia Ab Amenagement d'un systeme de telecommunications
US5812948A (en) * 1994-01-28 1998-09-22 Telia Ab Arrangement in a telecommunications system having automatic universal personal telecommunication services registration features
US5550896A (en) * 1994-06-30 1996-08-27 Lucent Technologies Inc. Authentication hierarchical structure of switching nodes for storage of authentication information
EP0690648A2 (fr) 1994-06-30 1996-01-03 AT&T Corp. Stockage temporaire des données d'authentification pour système de communications personnel
EP0690646A2 (fr) 1994-06-30 1996-01-03 AT&T Corp. Pré-localisation des données d'authentification dans un système de communications personnel
US5521962A (en) * 1994-06-30 1996-05-28 At&T Corp. Temporary storage of authentication information throughout a personal communication system
EP0690649A2 (fr) 1994-06-30 1996-01-03 AT&T Corp. Téléphone mobile avec mémorisation du numéro de noeud de commutation nominal
US5781863A (en) * 1994-06-30 1998-07-14 Lucent Technologies Inc. Pre-location of authentication information in a personal communication network
AU695383B2 (en) * 1994-06-30 1998-08-13 At & T Corporation Temporary storage of authentication information throughout a personal communication system
EP0690647A2 (fr) 1994-06-30 1996-01-03 AT&T Corp. Structure hiérarchique de noeuds de communication pour les besoins d'authentification avec stockage des données d'authentification
AU696896B2 (en) * 1994-06-30 1998-09-24 At & T Corporation Pre-location of authentication information in a personal communication system
CN1054958C (zh) * 1994-06-30 2000-07-26 美国电报电话公司 在移动电信系统中分布鉴别信息的装置和方法
US5758284A (en) * 1995-11-30 1998-05-26 Lucent Technologies Inc. Increasing the capacity of a personal communication service system by utilization of the bridged shared line appearance feature
US5758285A (en) * 1995-11-30 1998-05-26 Lucent Technologies Inc. Increasing the capacity of a personal communication service system by multiple connections to individual telephone links
US6192231B1 (en) 1996-07-11 2001-02-20 British Telecommunications Public Limited Company Telephone apparatus

Also Published As

Publication number Publication date
CN1081802A (zh) 1994-02-09
KR940702333A (ko) 1994-07-28
GB9214186D0 (en) 1992-08-12
EP0602208A1 (fr) 1994-06-22
JPH06510651A (ja) 1994-11-24

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