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WO1996013948A1 - Appareil et systeme radioelectrique de communications dans une ligne d'abonne fixe - Google Patents

Appareil et systeme radioelectrique de communications dans une ligne d'abonne fixe Download PDF

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Publication number
WO1996013948A1
WO1996013948A1 PCT/EP1995/004131 EP9504131W WO9613948A1 WO 1996013948 A1 WO1996013948 A1 WO 1996013948A1 EP 9504131 W EP9504131 W EP 9504131W WO 9613948 A1 WO9613948 A1 WO 9613948A1
Authority
WO
WIPO (PCT)
Prior art keywords
subscriber
telephone network
rtf
fixed telephone
atr
Prior art date
Application number
PCT/EP1995/004131
Other languages
English (en)
Inventor
Miguel Ferrero Lopez
Original Assignee
Alcatel N.V.
Alcatel Standard Electrica S.A.
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 Alcatel N.V., Alcatel Standard Electrica S.A. filed Critical Alcatel N.V.
Priority to AU43790/96A priority Critical patent/AU4379096A/en
Publication of WO1996013948A1 publication Critical patent/WO1996013948A1/fr

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]

Definitions

  • This invention concerns a radio access communications system for the fixed subscriber loop to provide access for a set of subscriber terminals to a fixed telephone network, this communications system being particularly applicable for those access systems to a fixed telephone network where the structural costs, coverage or topology make it unfeasible to employ wired networks.
  • BACKGROUND OF THE INVENTION At present, the use of radio communications systems in the subscriber loop is one of the topics of greatest interest for both the service providers and the manufacturers of equipments developed for this purpose.
  • the ternational tandardization and normalization bodies are plaving a major role in the analysis and examination oi the possible technologies to be applied to this field as alternatives to the physical transmission or access networks associated with a fixed telephone network.
  • the reference model for this local loop radio communications system makes use of a base station controller device that connects the local loop radio communications system with the fixed telephone network, a set of base stations with radio devices for transmitting and receiving information in the voice band, and signalling from and towards the subscriber terminals and a series of radio terminating elements that permit access to the radio interface of a number of subscriber terminals to which these radio terminating elements are each physically connected.
  • the radio access communications system for fixed subscriber terminals to a fixed telephone network presents problems of incompatibility between the two for full integration of this radio access system, acting to all intents as an extension of the fixed telephone network, when this radio access communication system has to interconnect and interoperate with the fixed telephone network.
  • CHARACTERISATION QF THE INVENTION This invention describes a radio access communications system for the fixed subscriber loop that provides access for a set of subscriber terminals to a fixed telephone network.
  • the base station controller which controls a set of base stations which establish the radio links with the subscriber terminal adapters; this radio access communications system for the fixed subscriber loop being of particular application in those access systems where, for reasons of high cost, coverage requirements or topology, a wired network access system is not feasible.
  • an audio communications channel is first set up between a base station controller and the subscriber terminating adapter of the subscriber terminal for which the call is intended, such that the subscriber terminals may be considered bv the fixed telephone network to be wired subscribers, whereby the latter can have access to the same services available on the fixed telephone network as can genuinely wired subscribers.
  • the communications channel formed in this way is initially used to send the tone signals associated with call control ( dial tone and ringing acknowledgment tones coming from the fixed telephone network), as well as the dialling signals generated bv the subscriber terminal towards the fixed telephone network.
  • the system also comprises means to interpret the call control system of the fixed telephone network and of the status of the subscriber interfaces of the subscriber terminating adapters, as well as means to identify these subscriber terminating adapters in calls made by the subscriber terminals towards the fixed telephone network.
  • FIG. 1 shows the radio access communications system in the fixed subscriber loop object of this invention
  • FIG. 2 shows the flowchart of the setting up, maintaining and release of an outgomg call from the subscriber termmal, between the base station controller and the subscriber terminating adapter associated with the subscriber terminal, and
  • FIG. 3 shows the flowchart tor the case of an incoming call to the subscriber termmal, between the base station controller mentioned and the subscriber terminating adapter associated with the telephone termmal DESCRIPTION OF AN IMPLEMENTATION OF THE INVENTION
  • the diagram of figure 1 is a representation of the radio access communications system in the fixed subscriber loop CEB, EB.ATR, object of this invention, which provides access tor a set of subscriber terminals TE to the communications services provided bv a fixed telephone network RTF
  • This system comprises a set of subscriber terminating adapters ATR each of which is connected to a subscriber terminal TE, and a base station controller CEB which controls a set of base stations EB for the functions of transmitting and receiving voice band information and signalling messages via radio
  • the radio technology employed in the implementation of the commurucations system is that of the European DECT (Digital European Cordless Telecommunications) standard which makes use of a signalling field over which are sent signalling messages and an information field over which is sent information in the voice band with a bandwidth of 4 kHz
  • the replacement of the conventional pair of wires in the subscriber loop with a radio link implies the incorporation into the subscriber loop of a new equipment termed a subscriber terminating adapter ATR in the two- wire interface of the subscriber termmal
  • This subscriber terminating adapter ATR sets up a radio connection with one of the base stabons EB that are physically linked to the base station controller CEB connected to the terminal point of the fixed network, in which reside the subscriber control functions CAB.
  • the subscriber terminating adapter ATR performs, among other functions, that of transmitting and receiving signalling and information in the voice band via radio and adapting these signals to the two-wire subscriber interface in the subscriber terminal TE, thereby ensuring the subscriber controller functions CAB of the terminal point of the fixed network in wired systems.
  • the subscriber terminating adapter ATR comprises means for requesting the setting up of the communications link with the base station controller CEB, means for transmitting towards the base station controller CEB both the information on the state of the two-wire subscriber interface and its own signalling, means to support the call control functions of the fixed telephone network RTF since the subscriber terminating adapter ATR has no call control functions of its own. wherebv it works with signals sent bv the base station controller CEB associated with the communications process.
  • the subscriber terminating adapters ATR also comprise means for transmitting their identification to the base station controller CEB in calls originated by the subscriber terminal TE towards the fixed telephone network RTF, as well as means to transmit towards the subscriber terminals TE information in the voice band of the tone signals associated with call control of the fixed telephone network RTF for calls originated by the subscriber terminals TE.
  • the subscriber terminating adapters ATR comprises means to transmit, in the voice band, towards the fixed telephone network RTF, the dialling signals generated in the subscriber terminals TE.
  • This invention of the subscriber terminating adapter ATR envisages the setting up of an audio path that can be enabled or inhibited according to the signalling messages received from the base station controller CEB.
  • This base station controller CEB makes possible the set-up and release of communications links with the subscriber terminals TE by means of the corresponding subscriber terminating adapters ATR, performing in turn the control of these functions.
  • the base station controller CEB comprises means to transmit towards the subscriber terminals TE, in the voice band, the tone signals associated with the call control of the fixed - 6
  • the telephone network RTF comprises means to perform the control of the two-wire subscriber interface of the subscriber terminating adapter ATR, means to support the call control of the fixed telephone network RTF, and means to transmit towards the fixed telephone network RTF, as information in the voice band, the dialling signals originating in the subscriber terminals TE.
  • the setting up of a DECT link can be initiated by both the base station controller CEB, in the case of incoming calls, and by the subscriber terminating adapter ATR in the case of outgoing calls, but the release of the communication can only be done by the base station controller CEB involved in the communication process, under the orders of the fixed telephone network RTF.
  • FIG. 2 is a flowchart of the setting up of a call made by a subscriber terminal TE towards the fixed telephone network RTF. It starts from an initial idle state 1 in which the subscriber terminal is on-hook. When the subscriber unhooks the handset 2, the system proceeds to a connection set-up state 3, in which the subscriber terminating adapter ATR requests the setting up of a DECT channel, after which it is allocated one ot the channels available to link it with the base station controller CEB via one of the base stations EB.
  • the subscriber terminating adapter ATR then sends an identifying message 4 to its associated base station controller CEB via the signalling field of the DECT frame, after which this base station controller CEB performs identity verification 5. Should the identity verification process of the subscriber terminating adapter ATR not result positive, the base station controller CEB passes to the release state 10 of the DECT channel.
  • the subscriber terminating adapter ATR informs 6 the base stahon controller CEB, via the signalling field of the DECT frame, that the subscriber handset is off- hook.
  • the CEB in question then mdicates this to the subscriber controller
  • CAB of the fixed network terminal point is the CAB of the fixed network terminal point.
  • the base station controller CEB then effects the transmission 7 of the signalling messages to the subscriber terminating adapter ATR for the enabling of the internal audio path of the subscriber terminatmg adapter ATR, these messages having been generated on indication from the subscriber controller CAB of the fixed telephone network RTF.
  • the normal call processes 8 of a telephone terminal take place in a transparent form: sending of the dial tone generated in the fixed telephone network RTF towards the subscriber terminal TE in the information field of the DECT frame, and transmission, as information in the voice band, of the dialling signals produced by the subscriber terminal TE towards the fixed telephone network RTF and of the pilot tone of the fixed telephone network RTF towards the subscriber terminal TE.
  • the bandwidth ot the DECT information field is sufficient to permit the transmission of the dialling signals produced by a subscriber terminal TE ot the DTMF type, as well as of the signalling tones employed bv the telephone network itself.
  • the subscriber terminal TE hangs up 9
  • this is communicated bv the subscriber termmating adapter ATR to the subscriber controller CAB, all of which takes place via the base station EB and the base station controller CEB.
  • the subscriber controller CAB then mdicates to the base station controller CEB that it may proceed to release 10 the DECT channel
  • Figure 3 shows the flowchart corresponding to the setting up. maintaining and release ot a call commg from the fixed telephone network RTF towards a subscriber terminal TE through the base station controller CEB and the subscriber terminating adapter ATR associated with the subscriber terminal TE for which the call is intended.
  • the system starts in an initial state 11 of waiting for an incoming call
  • the subscriber controller CAB mdicates 12 this situation to the base station controller CEB, after which the latter starts to set up 13 a DECT channel.
  • the subscriber terminating adapter ATR proceeds to indicate 14, via the signalling field, whether the subscriber terminal TE is off-hook or not. If the subscriber termmal TE is busy (off-hook), the system proceeds to the subscriber engaged state 15 in which the base station controller CEB informs the subscriber controller CAB of this situation and the latter informs the base station controller CEB that it may proceed with release 18 of the DECT channel, and the process is concluded.
  • the subscriber controller CAB makes an incoming call indication 16 that is sent, in the signalling field of the DECT channel, to the subscriber terminating adapter ATR by means of the corresponding signalling messages so that the latter will generate a ringing current in the subscriber terminal TE.
  • the subscriber terminating adapter ATR indicates this event to the subscriber controller CAB by means of the base station controller CEB, which transmits an enabling message for the audio channel 17, via the signalling field, to the subscriber terminating adapter ATR.
  • any intervening event produced by the subscriber terminal TE is communicated to the subscriber controller CAB over the DECT system signalling field and this controller takes a decision which is communicated to the base station controller CEB for it to carry out a determined action (channel release, etc.).
  • the subscriber controller CAB communicates this to the base station controller CEB, and the svstem progresses to the call release state 18 in which the DECT channel is cleared down.
  • an indication is given to the subscriber terminating adapter ATR for it to activate, for a determined time, an end-of-call tone that can be heard in the loudspeaker of the subscriber terminal TE and which is mterrupted when the subscriber hangs up.

Landscapes

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

Abstract

Système radioélectrique de communications d'accès dans une ligne d'abonné fixe (CEB, EB, ATR) permettant à un groupe de terminaux d'abonné (TE) d'accéder à un réseau téléphonique fixe (RTF). Ce système de communications établit, en plus de la liaison de signalisation, une liaison par canal audio par laquelle passent, sous forme d'informations de bande vocale, les signaux à fréquence audible associés aux signaux de commande d'appel relatifs au réseau téléphonique fixe (RTF), ainsi que les signaux de numérotation engendrés par les terminaux d'abonné (TE) pour les appels établis par lesdits terminaux d'abonné (TE) en direction dudit réseau téléphonique fixe (RTF). Ce système de communications offre les fonctions de commande d'appel correspondant au réseau téléphonique fixe (RTF), et les fonctions de commande d'interface d'abonné deux fils des terminaux d'abonné (TE).
PCT/EP1995/004131 1994-10-31 1995-10-21 Appareil et systeme radioelectrique de communications dans une ligne d'abonne fixe WO1996013948A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU43790/96A AU4379096A (en) 1994-10-31 1995-10-21 Fixed subscriber loop radio communications apparatus and system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP9402256 1994-10-31
ES9402256 1994-10-31

Publications (1)

Publication Number Publication Date
WO1996013948A1 true WO1996013948A1 (fr) 1996-05-09

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PCT/EP1995/004131 WO1996013948A1 (fr) 1994-10-31 1995-10-21 Appareil et systeme radioelectrique de communications dans une ligne d'abonne fixe

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AU (2) AU3428595A (fr)
WO (1) WO1996013948A1 (fr)
ZA (1) ZA959213B (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997013381A1 (fr) * 1995-10-02 1997-04-10 Telefonaktiebolaget Lm Ericsson (Publ) Procede et appareil permettant d'obtenir une interface d'appel amelioree dans un systeme de communication cellulaire fixe
GB2313016A (en) * 1996-05-09 1997-11-12 Motorola Israel Ltd Call set-up in a communication system
GB2313017A (en) * 1996-05-09 1997-11-12 Motorola Israel Ltd Signalling in a communication system
US5703933A (en) * 1995-05-31 1997-12-30 Telefonaktiebolaget Lm Ericsson (Publ.) Method and arrangement for establishing a connection in a telecommunications system
WO1997050262A3 (fr) * 1996-06-21 1998-02-19 Northern Telecom Ltd Systeme et procede d'interfaçage d'un systeme classique de telephonie avec un systeme de telecommunications sans fils
WO1998027757A3 (fr) * 1996-12-18 1998-10-01 Northern Telecom Ltd Methode pour transmettre un numero d'annuaire d'un poste pbx par une interface radio
WO1998033337A3 (fr) * 1997-01-23 1998-10-08 Northern Telecom Ltd Systeme d'acces sans fil comportant des fonctions de selection directe a l'arrivee et d'identification automatique des appels de depart
WO1998054851A3 (fr) * 1997-05-30 1999-03-04 Nokia Telecommunications Oy Systeme radio et procede d'etablissement d'appels
WO1999021323A3 (fr) * 1997-10-20 1999-11-25 Wireless Facilities Inc Systeme hertzien a porteuse multimedia
US6073028A (en) * 1997-12-09 2000-06-06 Ericsson Inc. Method and apparatus for providing out of band dialed digit signaling for a caller interface in a fixed cellular communications system
US6373827B1 (en) 1997-10-20 2002-04-16 Wireless Facilities, Inc. Wireless multimedia carrier system
US7990918B2 (en) 1997-11-14 2011-08-02 Yoshimi Ltd., Limited Liability Company Wireless T/E transceiver frame and signaling controller

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018941A1 (fr) * 1979-05-07 1980-11-12 Ascom Autophon Ag Installation pour la transmission par voie radio de communications téléphoniques avec un nombre de canaux radio inférieur au nombre de postes d'abonné

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0018941A1 (fr) * 1979-05-07 1980-11-12 Ascom Autophon Ag Installation pour la transmission par voie radio de communications téléphoniques avec un nombre de canaux radio inférieur au nombre de postes d'abonné

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
G.MANDEL ET AL.: "DAL in analog-zellularer Technik", NACHRICHTENTECHNIK, ELEKTRONIK, ISSN 0323-4657, vol. 42, no. 4, BERLIN, DE, pages 130 - 132, 134 - 135, XP000307185 *
J.W.HAGEN: "A VHF RADIO SYSTEM FOR PROVIDING TELEPHONE SUBSCRIBER SERVICE IN DIFFICULT ACCESS RURAL AREAS", 1976 INTERNATIONAL CONFERENCE ON COMMUNICATIONS. COMMUNICATIONS, CORNERSTONE OF FREEDOM, vol. 2, 14 June 1976 (1976-06-14) - 16 June 1976 (1976-06-16), PHILADELPHIA, PH, US, pages 27-27 - 27-32 *
T. KATAYAMA: "Rural Radio Telephony System", NTT REVIEW, ISSN 0915-2334, vol. 1, no. 3, TOKYO, JP, pages 90 - 95, XP000086469 *
T.MIYAWAKI ET AL.: "Radio Subscriber System", NEC RESEARCH & DEVELOPMENT, ISSN 0547-051X, no. 53, TOKYO, JP, pages 36 - 45 *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5703933A (en) * 1995-05-31 1997-12-30 Telefonaktiebolaget Lm Ericsson (Publ.) Method and arrangement for establishing a connection in a telecommunications system
AU720085B2 (en) * 1995-10-02 2000-05-25 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for providing an improved caller interface in a fixed cellular communications system
WO1997013381A1 (fr) * 1995-10-02 1997-04-10 Telefonaktiebolaget Lm Ericsson (Publ) Procede et appareil permettant d'obtenir une interface d'appel amelioree dans un systeme de communication cellulaire fixe
US5724656A (en) * 1995-10-02 1998-03-03 Telefonaktiebolaget Lm Ericsson Method and apparatus for providing an improved caller interface in a fixed cellular communications system
GB2313016A (en) * 1996-05-09 1997-11-12 Motorola Israel Ltd Call set-up in a communication system
GB2313017A (en) * 1996-05-09 1997-11-12 Motorola Israel Ltd Signalling in a communication system
GB2313016B (en) * 1996-05-09 2000-06-28 Motorola Israel Ltd An apparatus for and a method of setting up a call in a communication system
WO1997050262A3 (fr) * 1996-06-21 1998-02-19 Northern Telecom Ltd Systeme et procede d'interfaçage d'un systeme classique de telephonie avec un systeme de telecommunications sans fils
US5983117A (en) * 1996-06-21 1999-11-09 Nortel Networks Corporation System and method for interfacing a standard telephony device to a wireless communication system
WO1998027757A3 (fr) * 1996-12-18 1998-10-01 Northern Telecom Ltd Methode pour transmettre un numero d'annuaire d'un poste pbx par une interface radio
WO1998033337A3 (fr) * 1997-01-23 1998-10-08 Northern Telecom Ltd Systeme d'acces sans fil comportant des fonctions de selection directe a l'arrivee et d'identification automatique des appels de depart
US6075985A (en) * 1997-01-23 2000-06-13 Nortel Networks Corporation Wireless access system with DID and AIOD functions
WO1998054851A3 (fr) * 1997-05-30 1999-03-04 Nokia Telecommunications Oy Systeme radio et procede d'etablissement d'appels
US6023607A (en) * 1997-05-30 2000-02-08 Nokia Telecommunication Oy Radio system and a call setup method
AU740082B2 (en) * 1997-05-30 2001-11-01 Nokia Telecommunications Oy A radio system and a call set-up method
WO1999021323A3 (fr) * 1997-10-20 1999-11-25 Wireless Facilities Inc Systeme hertzien a porteuse multimedia
US6373827B1 (en) 1997-10-20 2002-04-16 Wireless Facilities, Inc. Wireless multimedia carrier system
US7990918B2 (en) 1997-11-14 2011-08-02 Yoshimi Ltd., Limited Liability Company Wireless T/E transceiver frame and signaling controller
US6073028A (en) * 1997-12-09 2000-06-06 Ericsson Inc. Method and apparatus for providing out of band dialed digit signaling for a caller interface in a fixed cellular communications system

Also Published As

Publication number Publication date
ZA959213B (en) 1996-05-27
AU3428595A (en) 1996-05-09
AU4379096A (en) 1996-05-23

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