Automatically configuring wireless PBX system

• US 5,265,150 A
• Filed: 01/30/1991
• Issued: 11/23/1993
• Est. Priority Date: 01/30/1991
• Status: Expired due to Term

• Current Assignee: Avaya Incorporated
• Original Assignee: AT&T, Inc.
• Inventors: Smith, James W., Helmkamp, David J.
• Primary Examiner(s): Ng, Jin F.
• Assistant Examiner(s): Cumming, William D.
• Application Number:
  US07/647,943
• Time in Patent Office: 1,028 Days
• Field of Search: 379/58, 379/56, 379/60, 379/59, 455/33.3, 455/33.4, 455/54.1, 455/31, 455/39, 455/18, 455/15, 455/33.2, 455/10, 455/56.1, 455/17, 455/16
• US Class Current: 455/555
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels
• CPC Class Codes: H04W 16/26 Cell enhancers or enhancement, e.g. for tunnels, building shadow
• CPC Class Codes: H04W 84/16 WPBX [Wireless Private Branch Exchange]

Abstract

A wireless PBX system provides ease of installation without site engineering or trial-and-error placement of components within the system. In its basic form, the wireless PBX system consists of only two types of components: a control unit including an radio frequency transceiver; and fixed location terminals, such as telephones and voice/data stations, which also include radio frequency transceivers. Portable handsets are optionally included in the system to allow for customer mobility. Installation of the PBX system is achieved simply by placing the system components in the desired locations at a premises, plugging them into line power, and performing some simple programming steps including a final step of initiating an automatic configuring process. Through this process, the system automatically configures itself for optimum operation in view of the radio environment and placement of components within the system at the customer premises. In the operation of this process, the control unit exchanges various radio messages with the terminals, decides which terminals should also serve as repeaters for linking those more distantly located terminals, and determines the appropriate frame structure for the system. A positive display indication at the control unit, following the end of the automatic configuring process, shows that all terminals have been linked and that the system is operating normally.

Claims

1. A wireless telephone system comprising:

a control unit for connecting to a switched network; and

a plurality of stations for communicating with the control unit over a wireless communication channel, the plurality of stations being dispersed so as to divide a location of the telephone system into multiple areas from which telephone service for each area is provided by one of the plurality of stations located in an associated one of the multiple areas, the control unit including means for configuring at least a selected first one of the plurality of stations for simultaneously providing telephone service with the control unit for both the area associated with said selected first one of the plurality of stations and for areas associated with selected second ones of the plurality of stations located outside of the communication range of the control unit, and wherein the control unit includes means for storing a unique signal code for communicating with each of the plurality of stations and comparison means for comparing said unique signal code with a signal code received in said control unit from each of the plurality of stations requesting service, the comparison means causing the control unit to be unresponsive to any requests for service from a station not providing said unique signal code recognized by the control unit.

2. The wireless telephone system as in claim 1 wherein the selected first one of the plurality of stations includes control means responsive to control signals indicating origin and destination addresses from either the control unit or a one of the selected second ones of the plurality of stations, the selected first station receiving and retransmitting the control signals to the control unit or to the one of the selected second ones of the plurality of stations in accordance with the contents of the control signal.

3. The wireless telephone system as in claim 1 wherein at least a one of the selected second ones of the plurality of stations is configurable by the control unit for providing telephone service with the control unit for selected third ones of the plurality of stations located outside of the communication range of both the control unit and the selected first one of the plurality of stations.

4. The wireless telephone system as in claim 3 wherein the selected second one of the plurality of stations includes control means responsive to control signals indicating origin and destination addresses from either the selected first one of the plurality of stations or a one of the selected third ones of the plurality of stations, the one of the selected second ones of the plurality of stations receiving and retransmitting the control signals to the selected first one of the plurality of stations or to the selected third one of the plurality of stations in accordance with the contents of the control signal.

5. The wireless telephone system as in claim 4 wherein the selected second one of the plurality of stations is configured for providing telephone service with the control unit by control signals provided to the selected second one of the plurality of stations by the selected first one of the plurality of stations, the selected second one of the stations providing telephone service with the control unit for the selected third ones of the plurality of stations.

6. The wireless telephone system as in claim 1 wherein the unique signal code comprises a base number generated by the control unit and an additional number provided by each station to the control unit during an auto-configuring operation, the additional number corresponding to the address for each of the plurality of stations.

7. The wireless telephone system as in claim 6 wherein the station address for a last one of the plurality of stations in the wireless system contains an additional character for identifying said last one of the plurality of stations for the control unit during the auto-configuring operation.

8. The wireless telephone system as in claim 1 wherein the control unit comprises means for providing a frame structure for communications between the control unit and the plurality of stations, the frame structure being operable for determining both a first number of time slots available for providing telephone service between the control unit and selected first ones of the plurality of stations, and a second number of time slots available for providing telephone service between the selected first ones of the plurality of stations and the selected second ones of the plurality of stations.

9. The wireless telephone system as in claim 8 wherein the control unit further comprises means for providing multiple carriers, each of the plurality of stations being configured by the control unit for communicating therewith over one of the plurality of carriers, and each carrier having a configurable frame structure for providing selectable telephone service for the plurality of stations operating thereon.

10. The wireless telephone system as in claim 9 wherein at least one of the plurality of stations is a portable station.

11. In a wireless telephone system, an arrangement for automatically configuring a plurality of stations for operating in said system, the arrangement comprising:

a control unit for connecting to a switched network; and

a plurality of stations for communicating with the control unit over a wireless communication channel, the plurality of stations being dispersed so as to divide a location of the telephone system into multiple areas from which telephone service for each area is provided by one of the plurality of stations, the control unit comprising means for selecting at least a first one of the plurality of stations during an auto-configuring operation for simultaneously providing telephone service with the control unit for both the area associated with said selected first one of the plurality of stations and for areas associated with said selected second ones of the plurality of stations, and wherein the control unit includes means for storing a unique signal code for communicating with each of the plurality of stations and comparison means for comparing said unique signal code with a signal code received in said control unit from each of the plurality of stations requesting service, the comparison means causing the control unit to be unresponsive to any requests for service from a station not providing said unique signal code recognized by the control unit.

12. The arrangement for automatically configuring a plurality of stations for operating in a wireless telephone system in accordance with claim 11 wherein the control unit further comprises means for generating a first control signal over the communication channel, each of the plurality of stations receiving the control signal responding over the channel to the control unit for establishing communication with the control unit.

13. The arrangement for automatically configuring a plurality of stations for operating in a wireless telephone system in accordance with claim 12 wherein the means for selecting at least the first one of the plurality of stations further includes means for detecting those stations responding to the first control signal, responsive to the detecting means, the generating means generating a second control signal over the communication channel to those stations responding to the first control signal and selecting from these stations the at least first one of the plurality of stations for providing telephone service with the control unit for selected second ones of the plurality of stations.

14. The arrangement for automatically configuring a plurality of stations for operating in a wireless telephone system in accordance with claim 13 wherein the at least first one of the plurality of stations includes means for generating a third control signal over the communication channel for establishing communication with the selected second ones of the plurality of stations, the at least first one of the plurality of stations further including means for detecting those stations responding to the third control signal, responsive to the detecting means, the generating means in the at least first one of the plurality of stations generating a fourth control signal over the communication channel to the control unit, the fourth control signal being indicative of those stations responding to the third control signal and these stations being the selected second ones of the plurality of stations.

15. A method of configuring a plurality of stations for operation in a wireless telephone system, the method comprising the steps of:

connecting a control unit to a switched network, the control unit being arranged for communicating over a wireless communication channel;

configuring a first station for communicating over the communication channel and for operating as a repeater for a more remote station upon receipt of a signal from the control unit, the first station simultaneously operating as a station for originating and receiving calls directed to it and as a repeater station for providing communications between the control unit and the more remote unit,

storing in the control unit a unique signal code for communicating with each of the plurality of stations; and

comparing said unique signal code with a signal code received in said control unit from each of the plurality of stations requesting service, the control unit being unresponsive to any requests for service from a station not providing said unique signal code recognized by the control unit.

16. A wireless PBX comprising:

a first telephone station;

central control means for interconnecting said first telephone station with a telephone network via a first wireless communications channel between said first telephone station and said control means; and

a second telephone station interconnected to said central control means via a communications channel which includes a second wireless communications channel between said second telephone station and said first telephone station and which further includes said first wireless communications channel, and wherein the central control means includes means for storing a unique signal code for communicating with each of the telephone stations and comparison means for comparing said unique signal code with a signal code received in said control unit from each of the telephone stations requesting service, the comparison means causing the central control means to be unresponsive to any requests for service from a station not providing said unique signal code recognized by the central control means, the central control means configuring said first telephone station for simultaneously operating as a station for originating and receiving calls directed to it and as a repeater station for communicating calls between the telephone network and said second telephone station via both the first wireless communications channel and the second wireless communications channel.

17. A central control unit for use in a wireless PBX which includes at least first and second telephone stations, said central control unit comprising:

means for connecting said central control unit to a telephone network;

means for establishing a direct wireless connection between said central control unit and said first telephone station; and

means for establishing a repeatered wireless connection between said central control unit and said second telephone station, said repeatered wireless connection including said first telephone station, and wherein said control unit includes means for storing a unique signal code for communicating with each of the first and second telephone stations and comparison means for comparing said unique signal code with a signal code received in said control unit from each of the first and second telephone stations requesting service, the comparison means causing the control unit to be unresponsive to any requests for service from a station not providing said unique signal code recognized by the control unit, the control unit configuring said first telephone station for simultaneously operating as a station for originating and receiving calls directed to it and as a repeater station for operating within said repeatered wireless connection, said first telephone station communicating calls between said central control unit and said second telephone station via both the direct wireless connection and the repeatered wireless connection.

18. A wireless PBX system comprising:

a central control unit and a plurality of wireless telephone stations which permit originating and receiving calls at each station, said central control unit comprising;

means for establishing a wireless telephonic communications channel with each of said wireless telephone stations and for simultaneously interconnecting said wireless communications channels to a telephone network, ones of said wireless telephonic communications channels being unrepeatered and at least one other of them being a repeatered channel which includes at least one of said unrepeatered channels;

means for storing a unique signal code for communicating with each of the plurality of stations; and

comparison means for comparing said unique signal code with a signal code received in said control unit from each of the plurality of stations requesting service, the comparison means causing the control unit to be unresponsive to any requests for service from a station not providing said unique signal code recognized by the control unit.

19. A plurality of telephone stations for use in a wireless PBX system which includes a central control unit for interconnecting said telephone stations with a telephone network via a wireless communications channel between said telephone stations and said control unit, a first one of the telephone stations comprising:

means for establishing a direct wireless connection between said central control unit and said first one of the telephone stations;

means for establishing a repeatered wireless connection between said central control unit and a second one of the telephone stations, said repeatered wireless connection existing simultaneously with said direct wireless connection; and

means for simultaneously operating as a station for originating and receiving calls directed to said first station and as a repeater station for operating within said repeatered wireless connection for communicating calls between said central control unit and said second telephone station via both the direct wireless connection and the repeatered wireless connection, and wherein the control unit includes means for storing a unique signal code for communicating with each of the plurality of stations and comparison means for comparing said unique signal code with a signal code received in said control unit from each of the plurality of stations requesting service, the comparison means causing the control unit to be unresponsive to any requests for service from a station not providing said unique signal code recognized by the control unit.

20. A method of operation for a central control unit arranged for use in a wireless PBX which includes a plurality of telephone stations, said method comprising the steps of:

connecting said central control unit to a telephone network;

storing in said central control unit a unique signal code for communicating with each of the plurality of telephone stations, the control unit being unresponsive to any requests for service from a station not providing a unique signal code recognized by the control unit;

establishing a direct wireless connection between the control unit and each one of said plurality of telephone stations;

using as a repeater a first one of the plurality of telephone stations with which a direct wireless connection between the control unit and said first one of the plurality of telephone stations is established for establishing a repeatered wireless connection between the control unit and a second one of said plurality of telephone stations with which a direct wireless connection is not established during the establishing step; and

configuring said first telephone station for simultaneously operating as a station for originating and receiving calls directed to it and as a repeater station for operating within said repeatered wireless connection, said first telephone station communicating calls between said central control unit and said second telephone station via both the direct wireless connection and the repeatered wireless connection.