WO1990006039A1 - Systeme de communication permettant l'identification automatique d'appelants - Google Patents

Systeme de communication permettant l'identification automatique d'appelants Download PDF

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Publication number
WO1990006039A1
WO1990006039A1 PCT/US1989/004779 US8904779W WO9006039A1 WO 1990006039 A1 WO1990006039 A1 WO 1990006039A1 US 8904779 W US8904779 W US 8904779W WO 9006039 A1 WO9006039 A1 WO 9006039A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
calling
subscriber unit
identity
subscriber
Prior art date
Application number
PCT/US1989/004779
Other languages
English (en)
Inventor
Stelios Patsiokas
Brian Keith A. Johnson
Pierre E. Audet
Original Assignee
Motorola, Inc.
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 Motorola, Inc. filed Critical Motorola, Inc.
Priority to KR1019900701524A priority Critical patent/KR900702741A/ko
Publication of WO1990006039A1 publication Critical patent/WO1990006039A1/fr
Priority to DK074791A priority patent/DK74791A/da
Priority to NO1991911882A priority patent/NO911882D0/no
Priority to FI912390A priority patent/FI912390A0/fi

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/02—Automatically-operated arrangements
    • 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

Definitions

  • This invention relates generally to radio frequency (RF) communication systems, and more specifically to an RF communication system that automatically provides called parties with the identity of calling parties, and is particularly directed toward an RF communication system that identifies calling parties and provides called parties with an option to either receive the call, or to direct the call to a recording unit.
  • RF radio frequency
  • the identity of a calling subscriber unit is provided to a called subscriber unit by requiring the calling subscriber unit to identify itself to a central station (or unit) and request access to the communication resources.
  • the central station forwards the identity of the calling subscriber to the called subscriber, which enables the called subscriber to decide whether to respond to (answer) the call. If the called subscriber responds, an RF communication link between the two subscriber units is established. Conversely, if the called subscriber does not respond (or responds negatively), the calling subscriber unit is provided with a "Busy" indication.
  • the central station operates as a system-wide message recorder to store messages from calling subscribers for non-responding (Busy) subscribers. In this way, a calling subscriber may leave a message for later retrieval.
  • FIG. 1 is an illustration of a communication system in accordance with the present invention
  • Figures 2a-2e are flow diagrams illustrating the operation of the controller of Figure 1 ;
  • Figure 3 is a flow diagram illustrating the operation of a calling subscriber unit in accordance with the present invention
  • Figure 4 is a flow diagram illustrating the operation of a called subscriber unit in accordance with the present invention
  • Figure 5 is a flow diagram illustrating the operation of the present invention as viewed from a conventional telephone (interconnect party).
  • the system 100 comprises a central unit (or station) having a controller 102 coupled to and controlling a plurality of repeaters 104a-104c to facilitate communication between a plurality of subscriber units (two shown).
  • the central station also includes a telephone interface 108, which intercouples the controller 102 with a conventional public switched telephone network (PSTN).
  • PSTN public switched telephone network
  • a calling subscriber unit 106 will transmit a call request 112 to the central station.
  • the call request includes an identification code that is associated with the calling subscriber unit 106, and a code identifying the calied subscriber or subscribers.
  • the central station transmits a message 114 to the called subscriber unit(s), which contains the identity of the calling subscriber 106.
  • the calied subscriber unit(s) 106' operate to display the identity of the calling subscriber on a display means, while activating an enunciator to inform the subscriber that he or she is being called.
  • each called subscriber may determine whether to answer the call or may decide to transmit a record command to the central station that instructs the central station to store a message for later retrieval.
  • called subscribers may determine whether to answer a call received during a meeting, interview or conference, or during intervals where the called subscriber does not want to be disturbed except by an important message.
  • the present invention provides means for recording and retrieving a message from the central station of the communication system 100.
  • the central station is interconnected to a conventional public switch telephone network (PSTN) by providing the central station with a telephone interface 108, which is disposed between the controller 102 and the PSTN 110.
  • PSTN public switch telephone network
  • each interconnect caller is required to transmit an identity code using DTMF codes or other suitable signalling mechanism.
  • the controller 102 receives the identity code of the interconnect caller, and cross references this code to the calling party's identity stored within the controller 102. This identity is forwarded to the called subscriber 106' via the message 114, which enables the called subscriber(s) to display the identity of the calling interconnect party.
  • this is only effective for those interconnect parties who have been assigned an - interconnect identity code that may be cross referenced to an identity stored within the controller 102.
  • an interconnect caller contemplating use the system would contact the system operator and receive an assigned interconnect identity code and have this code cross reference to its identity in the controller 102.
  • the present invention contemplates allowing communication to commence, although the identity of the interconnect caller cannot be ascertained beyond providing an indication that the calling party is an interconnect party by using a label such as "Telephone Call", or words of similar import.
  • FIG. 2a a flow diagram illustrating the operation of the central station (or unit) is shown.
  • the routine begins with decision 200, which determines whether a call request was received from a calling subscriber unit. A negative determination by decision 200 routes control to reference letter D of Figure 2c. However, if the determination of decision 200 is that a call request has been received, the routine proceeds to decision 202, which determines whether any messages are currently stored within the controller 102 for the calling party. If there are messages stored for the calling party, a "Message Waiting" code is transmitted to the calling subscriber (step 204). In this way, subscribers are reminded that messages are waiting at the central station.
  • the routine proceeds to decision 206, which determines whether a channel is available on the communication system 100. If not, a "No Channel Available" message is sent (step 208), and the routine proceeds to reference letter C of
  • step 210 determines whether the called subscriber is currently participating in another call, and is therefore busy and unable to respond to the present call request. If the controller 102 determines that the called subscriber is busy, the routine proceeds to step 212, which transmits a "Unit Busy" message to the calling subscriber prior to routing control to reference letter C of Figure 2b. However, if the called subscriber is-not busy the routine proceeds to step 214, where the central station transmits a message 114 containing the identity of the calling subscriber unit . Optionally, the central may send the channel information at this time (step 216), which will enable the called subscriber unit to aptly move to a communication channel to commence communication if so desired.
  • the channel information may be provided to the called subscriber at a later time to minimize the initial air traffic in the event that the called subscriber does not wish to participate in a call.
  • the routine proceeds to reference letter B of Figure 2b.
  • the central station operation continues in decision 218, which determines whether a response from the called unit was received. If not, the routine proceeds to decision 220, which determines whether a predetermined time interval for a response has expired. If not, the central operates in the loop formed by decisions 218 and 220 waiting for a response until the predetermined time has expired. If, however, the determination of decision 218 is that a response was received from the called subscriber, the routine proceeds to decision 222, which determines whether a record command was received in response to transmitting the identity of the calling subscriber unit. If not, the called subscriber will operate to answer the call and communicate with the calling party. To do this, both subscriber units must have the channel information identifying the communication channel upon which to communicate.
  • the central transmits the channel information in optional step 224, and thereafter, the centraf operates to process the call normally (step 226).
  • the routine proceeds to reference letter A of Figure 2a.
  • decision 222 determines whether a message was received from the calling subscriber. If not, the routine returns to reference letter A of Figure 2a. However, if the message was received from the calling subscriber, the message is stored (step 232) prior to returning to reference letter A of Figure 2a.
  • the central station operation continues with decision 234, which determines whether an interconnect call was received from the PSTN network. If not, the routine proceeds to reference letter G of Figure 2e. However, if the determination of decision 234 is that an interconnect call was received, the routine proceeds to decision 236, which determines whether a channel is available. If not, the central station transmits a "No Channels Available" message (step 238) to the interconnect party prior to routing controls to reference letter F of Figure 2d. Assuming, however, that a channel was available, the routine proceeds to decision 240, which determines whether the called subscriber unit is currently engaged in another conversation.
  • step 242 a "Unit Busy" message is transmitted (step 242) to the interconnect caller prior to proceeding to reference letter F of Figure 2d.
  • the routine proceeds from decision 240 to step 244, where the central requests the interconnect ID of the interconnect party.
  • decision 240 and step 242 may be omitted so that the routine would proceed directly to step 244.
  • the calling interconnect party's identity is always sent to the called subscriber (whether Busy or not) thereby allowing the called subscriber to decide whether to terminate a current call to answer the interconnect call. This provides the subscriber units to give priority to an interconnect call over subscriber-to-subscriber calls.
  • any interconnect caller having more than an infrequent need to use the communication system 100 is assigned an interconnect ID from the system operator.
  • This interconnect ID may be cross referenced to the calling party's identity stored in the memory of the controller 102. Therefore, upon receipt of the interconnect ID request of step 244, the interconnect party would transmit its interconnect ID using the telephone's DTMF keypad or other suitable means. Accordingly, decision 246 determines whether a response containing the interconnect ID was received from the interconnect party. If not, decision 248 determines whether a response time interval has expired. A negative determination of decision 248 results in an operational loop comprising decisions 246 and 248, which continues until the conclusion of the time interval.
  • step 250 the central station cross references the received interconnect ID to find the calling party's identity.
  • step 252 this identity is transmitted to the calied subscriber. Following this, the routine proceeds to reference letter E of Figure 2d.
  • the central station routine continues in step 254, which is an optional step allowing the central station to transmit channel information to the called subscriber so that he or she may rapidly move to the communication channel if communication is desired. Alternately, the channel information may be sent at a later time as will be hereinafter discussed.
  • the routine continues in decision 256, which determines whether a response received from the called unit. If not, the routine is routed to decision 258, which determines whether the time interval for response has elapsed. If the time interval has not expired, a loop is formed by decision 256 and decision 258, which operates to determine whether a response is received before the expiration of predetermined time interval.
  • the routine proceeds to decision 260, which determines whether a "Record Command" was received from the called subscriber unit. If not, the calied subscriber intends to participate in the call with the calling party, and therefore must move to a communication channel to communicate. Accordingly, the central may optionally send the channel information in step 262 (or step 254), after which the central processes the call normally (step 264). At the conclusion of the call, the routing proceeds to reference letter A of Figure 2a.
  • the routine proceeds to reference letter F, which begins with step 266 where a "Record Message" indication is transmitted to the calling interconnect party. Preferably, this is done using a voice recording, voice synthesizer or other suitable means to provide a meaningful indication to the interconnect party that he or she may leave a message for the called subscriber. Accordingly, the routine proceeds to decision 268, which determines whether the interconnect caller has transmitted a message to be recorded. If not, the routine proceeds to reference letter A of Figure 2a. However, if the interconnect caller has transmitted a message to be recorded, the central station stores it in step 270 prior to proceeding to reference letter A of Figure 2a.
  • the central station routine continues in decision 272, which determines whether a "Message Request" code was received from any subscriber unit operating within the communication system 100.
  • subscriber units desiring access to the communication facilities are automatically reminded (decision 202 and step 204) of waiting messages.
  • a subscriber unit may contact the central station specifically for the purpose of retrieving stored messages. Accordingly, an affirmative determination of decision 272 routes control to decision 274, which determines whether messages are waiting for the requesting subscriber unit. If not, the central station sends a "No Message Waiting" signal (step 276). However, if the determination of decision 272 is that there are messages waiting for this subscriber unit, the messages are transmitted in step 278 prior to returning to reference letter A of Figure 2a.
  • Step 300 the calling subscriber transmits a call request to the central station.
  • the call request comprises the identification of the calling party, the identification of the party to be called, and other signalling or control information as may be appropriate in the communication system.
  • decision 302 determines whether a response was received from the central station. If not, the routine proceeds to decision 304 which determines whether a response time interval has expired. If not, the routine operates in a loop formed by decisions 302 and decisions 304 to determine whether a response was received within a predetermined time interval.
  • the routine proceeds to decision 306, which determines whether a subscriber should retry the call request. According to the invention, each subscriber may retry the call request after waiting an arbitrary time interval to allow excess communication traffic to subside. If the determination of decision 306 is to retry the call request, routine proceeds to step 300, where the call request is again transmitted. However, if the determination of decision 306 is not to retry the routine exits (step 307) and the subscriber unit operates to perform other steps in accordance with its operational program. Assuming however that the determination of decision 302 is that a response was received, the routine proceeds to decision 308, which determines whether a message containing the channel information was received from the central station.
  • the routine proceeds to reference letter H. However, if the determination of decision 308 is that the channel information was not received, the routine proceeds to decision 312 .which determines whether a "Record Message" indication was received. A negative determination of decision 312 routes controls to letter H , while an affirmative determination routes control to step 314 where the calling subscriber transmits the message to be stored at the central station. In this way, a message may be provided to the called party at the called party's convenience.
  • step 400 the called subscriber receives the identity of the calling subscriber unit.
  • the called subscriber may receive channel information at this time (step 402) from the central information.
  • the called subscriber unit displays the calling party's identity (step 404) so that the called subscriber may determine whether to answer the call.
  • decision 406 determines whether the subscriber has activated a "Record Message" command signal. If so, the routine proceeds to step 408, where a "Record Message" command is transmitted to the central station, which indicates that the called subscriber will not answer at this time, and may receive a recorded message later.
  • a negative determination in decision 406 indicates that the called subscriber will receive the call and communicate with the calling party. Accordingly, if the called subscriber unit has not yet received the channel information (such as in step 402) the channel information may be received in step 410 prior to processing the call normally in step 412.
  • Step 500 the interconnect caller accesses the central station via the PSTN.
  • Decision 502 determines whether a "Record Message" indication has been received indicating either that the system is busy, the called subscriber is busy, or the called subscriber does not wish to answer the call at this time. If a "Record Message" indication has been received indicating either that the system is busy, the called subscriber is busy, or the called subscriber does not wish to answer the call at this time. If a "Record Message" indication has been received indicating either that the system is busy, the called subscriber is busy, or the called subscriber does not wish to answer the call at this time. If a "Record Message" indication has been received indicating either that the system is busy, the called subscriber is busy, or the called subscriber does not wish to answer the call at this time. If a "Record Message" indication has been received indicating either that the system is busy, the called subscriber is busy, or the called subscriber does not wish to answer the call at this time. If a
  • step 504 a message is transmitted to be stored for later retrieval by the called subscriber.
  • step 506 the interconnect caller receives a request to transmit its interconnect ID.
  • the interconnect caller transmits its interconnect ID (step 508) using the telephone's DTMF keypad or any other suitable signalling means.
  • the central station Upon receipt of the interconnect ID, the central station, transparently to the interconnect caller, determines the interconnect caller's identity and transmits it to the called subscriber unit so that the called subscriber may determine whether to answer the call. Conversely, if the interconnect caller does not have an interconnect ID, the present invention permits the interconnect caller to access the communication system, however, the called party may only be provide with limited information (such as "Telephone Caller") regarding the identity of the calling interconnect party. In any event, if the called subscriber answers, the interconnect caller participates in the call normally to its conclusion (step 510).

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

Abstract

L'identité d'une unité (106) d'un abonné appelant est communiquée à une unité d'abonné appelé (ou plusieurs) (106') en demandant à l'appelant de s'identifier (112) à un central (102 et 104a-c) et de demander accès aux ressources de communication. Le central transmet l'identité de l'appelant à l'appelé (114), ce qui permet à l'appelé de décider de répondre ou de ne pas répondre à l'appel. Si l'appelé répond, une liaison de communication HF entre les deux abonnés téléphoniques est établie. Inversement, si l'appelé ne répond pas (ou répond négativement), l'appelant reçoit une indication ''occupé''. Eventuellement, le central peut fonctionner comme un système d'enregistrement de messages pour stocker des messages provenant d'appelants et destinés à des abonnés ne répondant pas (occupés). De cette manière, un appelant peut laisser un message pour que ce dernier soit pris par la suite.
PCT/US1989/004779 1988-11-21 1989-10-27 Systeme de communication permettant l'identification automatique d'appelants WO1990006039A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019900701524A KR900702741A (ko) 1988-11-21 1989-10-27 호출측의 자동적 신원 확인을 제공하는 통신 시스템
DK074791A DK74791A (da) 1988-11-21 1991-04-23 Fremgangsmaade ved drift af et kommunikationssystem til automatisk identifikation af opkaldende abonnenter
NO1991911882A NO911882D0 (no) 1988-11-21 1991-05-15 Framgangsmaate for automatisk identifikasjon i et kommunikasjonssystem.
FI912390A FI912390A0 (fi) 1988-11-21 1991-05-16 Kommunikationssystem moejliggoerande automatisk identifiering av anropande abonnenter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27423488A 1988-11-21 1988-11-21
US274,234 1988-11-21

Publications (1)

Publication Number Publication Date
WO1990006039A1 true WO1990006039A1 (fr) 1990-05-31

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Application Number Title Priority Date Filing Date
PCT/US1989/004779 WO1990006039A1 (fr) 1988-11-21 1989-10-27 Systeme de communication permettant l'identification automatique d'appelants

Country Status (9)

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EP (1) EP0444100A1 (fr)
JP (1) JPH04503437A (fr)
KR (1) KR900702741A (fr)
AU (1) AU4635889A (fr)
DK (1) DK74791A (fr)
FI (1) FI912390A0 (fr)
IL (1) IL91787A0 (fr)
NO (1) NO911882D0 (fr)
WO (1) WO1990006039A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992017950A1 (fr) * 1991-03-29 1992-10-15 Telefonaktiebolaget Lm Ericsson Acheminement de communications aux services auxiliaires
EP0592963A2 (fr) * 1992-10-16 1994-04-20 Ntt Mobile Communications Network Inc. Méthode de commande de connection pour communications personelles
WO1996012378A1 (fr) * 1994-10-17 1996-04-25 Ericsson Inc. Systemes et procedes permettant d'accepter selectivement des appels telephoniques sans etablir de communication vocale
US5572584A (en) * 1993-04-02 1996-11-05 Ntt Mobile Communications Network Inc. Connection control method for personal communications
US6108559A (en) * 1993-10-26 2000-08-22 Telefonaktiebolaget Lm Ericsson System and method for routing messages in radiocommunication systems

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172969A (en) * 1975-12-03 1979-10-30 Boris Haskell Real time absentee telephone and radiant wave signaling system
US4661972A (en) * 1985-02-18 1987-04-28 Nec Corporation Mobile telephone system for automatically paging absent mobile subscriber

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172969A (en) * 1975-12-03 1979-10-30 Boris Haskell Real time absentee telephone and radiant wave signaling system
US4661972A (en) * 1985-02-18 1987-04-28 Nec Corporation Mobile telephone system for automatically paging absent mobile subscriber

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992017950A1 (fr) * 1991-03-29 1992-10-15 Telefonaktiebolaget Lm Ericsson Acheminement de communications aux services auxiliaires
EP0592963A2 (fr) * 1992-10-16 1994-04-20 Ntt Mobile Communications Network Inc. Méthode de commande de connection pour communications personelles
EP0592963A3 (fr) * 1992-10-16 1994-08-03 Nippon Telegraph & Telephone
US5703941A (en) * 1992-10-16 1997-12-30 Ntt Mobile Communications Network, Inc. Connection control method for personal communications
US5572584A (en) * 1993-04-02 1996-11-05 Ntt Mobile Communications Network Inc. Connection control method for personal communications
US6108559A (en) * 1993-10-26 2000-08-22 Telefonaktiebolaget Lm Ericsson System and method for routing messages in radiocommunication systems
WO1996012378A1 (fr) * 1994-10-17 1996-04-25 Ericsson Inc. Systemes et procedes permettant d'accepter selectivement des appels telephoniques sans etablir de communication vocale
US5657372A (en) * 1994-10-17 1997-08-12 Ericsson Inc. Systems and methods for selectively accepting telephone calls without establishing voice communications

Also Published As

Publication number Publication date
NO911882L (no) 1991-05-15
JPH04503437A (ja) 1992-06-18
AU4635889A (en) 1990-06-12
DK74791D0 (da) 1991-04-23
FI912390A0 (fi) 1991-05-16
EP0444100A1 (fr) 1991-09-04
DK74791A (da) 1991-04-23
IL91787A0 (en) 1990-06-10
NO911882D0 (no) 1991-05-15
KR900702741A (ko) 1990-12-08

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