Telecommunication combination comprising a telepoint and a portable radio terminal

• US 4,980,907 A
• Filed: 12/15/1989
• Issued: 12/25/1990
• Est. Priority Date: 12/15/1989
• Status: Expired due to Term

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Raith, Alex K., Persson, Bengt Y., Akerberg, Dag E.
• Primary Examiner(s): Ng, Jin F.
• Assistant Examiner(s): BOST, DWAYNE D
• Application Number:
  US07/451,171
• Time in Patent Office: 375 Days
• Field of Search: 379/50-63, 379/201, 379/210-212, 455/33, 455/49, 455/53, 455/54, 455/56, 455/95
• US Class Current: 455/465
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 84/16 WPBX [Wireless Private Branch Exchange]
• CPC Class Codes: H04W 92/02 Inter-networking arrangements

Abstract

The invention relates to a combination of a switched telecommunication network, a telepoint connected to the network and a portable radio terminal constituting part of a residential equipment or an extension to a PABX, the portable radio terminal when served by a telepoint radio transceiver instead of its residential or exchange radio transceiver uses the telepoint and the network for calling its residential base radio station or PABX and reporting serving telepoint to a location store, calls to the portable radio terminal thereafter being transferred by the residential equipment or PABX through the network to the telepoint in accordance with information in the location store, whereby the portable radio terminal or cordless telephone may be called through the network and telepoint when in proximity of a telepoint.

Claims

1. A combination of a public switched telecommunication network, a automatic branch exchange connected to the telecommunication network, plural portable radio terminals constituting extensions to the branch exchange, and a telepoint radio station connected to the telecommunication network;

the telecommunication network comprising a network subscriber store for information on network subscribers including the branch exchange and the telepoint station, means for connecting subscriber equipment to the network, and means for setting up calls to and from connected subscriber equipment in accordance with information in the network subscriber store;

the branch exchange comprising an exchange switch, exchange radio transceivers connected to the switch, and an extension location store for information on portable radio terminals constituting extension terminals to the branch exchange;

the telepoint radio station comprising a telepoint radio transceiver for radio communication with portable radio terminals, means for receiving an access request from and forwarding a call from a served portable radio terminal to the telecommunication network, means for paging a served radio terminal called by the telecommunication network, and means for forwarding a call from the telecommunication network to a paged and responding served portable radio terminal;

the portable radio terminal comprising means for scanning of radio channels used by exchange radio transceiver or telepoint radio transceiver, means for receiving radio signals at scanning. and determining from received radio signals information on identity of transmitting transceiver, if any, means for choosing as serving transceiver a transceiver of appropriate received radio signals, if any, and means for calling via a telepoint station and the network the branch exchange to whom the portable radio terminal constitutes an extension and reporting to the extension location store the identity of choosen radio transceiver when other than one of the exchange radio transceivers of the same branch exchange;

in which combination a call to a portable radio terminal constituting an extension to a private branch exchange being set up by the telecommunication network to the branch exchange in accordance with information on the portable radio terminal in the network subscriber store; and

when receiving a call from the network to a portable radio terminal having reported to the extension location store as being served by a telepoint radio transceiver the branch exchange forwarding the call back to the telecommunication network as a call to the telepoint station comprising the serving radio transceiver.

2. A combination according to claim 1 comprising plural subscriber residential equipments for subscribers to the network, each subscriber residential equipment comprising a residential base radio station connected to the network and a portable radio terminal;

the residential base radio station comprising a residential radio transceiver for radio communication with the portable radio terminal and a residential location store for information on the portable radio terminal constituting part of the same subscriber residential equipment;

the portable radio terminal of the subscriber residential equipment comprising means for scanning of radio channels used by the residential radio transceiver or exchange radio transceiver or telepoint radio transceiver, means for receiving radio signals at scanning and determining from received radio signals information on identity of transmitting transceiver, if any, means for choosing as serving transceiver a transceiver of appropriate received radio signals, if any, and means for calling via a telepoint station or a branch exchange the residential base radio station constituting part of the same subscriber equipment and reporting to the residential location store the identity of choosen radio transceiver when other than the residential radio transceiver constituting part of the same subscriber residential equipment;

in which combination a call to a portable radio terminal constituting part of a subscriber residential equipment being set up by the telecommunication network to the residential base radio station constituting part of the same subscriber equipment in accordance with information on the portable radio terminal in the network subscriber store; and

when receiving a call from the network to a portable radio terminal having reported to the residential location store as being served by an other transceiver the residential base radio station forwarding the call back to the telecommunication network as a call to the telepoint radio station or branch exchange comprising the serving transceiver.

3. A combination according to claim 1 wherein the branch exchange comprises plural extension numbers for temporary use by visiting portable radio terminals not normally constituting extensions to the branch exchange;

the branch exchange allotting a vacant extension number to a visiting portable radio terminal to be served by an exchange transceiver of the branch exchange;

the branch exchange paging visiting portable radio terminals having allotted extension numbers of the exchange;

the branch exchange withdrawing from use allotted extension numbers of visiting portable radio terminals not responding to paging; and

the branch exchange setting up a call through the switched network for informing the location store of the visiting portable radio terminal on the withdrawal of the use of the allotted extension number.

4. A combination of a switched telecommunication network, a branch exchange connected to the telecommunication network, a plurality of portable radio terminals constituting extension terminals to the branch exchange, a telepoint transceiver controller connected to the telecommunication network, and a plurality of telepoint radio transceivers connected to the telepoint transceiver controller;

the telecomminication network comprising a network subscriber store for information on network subscribers including the branch exchange and the telepoint transceiver controller, means for connecting subscriber equipment to the network, and means for setting up calls to and from connected subscriber equipment in accordance with information in the subscriber store;

the branch exchange comprising an exchange switch, exchange radio transceivers connected to the switch, and an extension location store for information on portable radio terminals constituting extension terminals to the branch exchange;

each telepoint radio transceviver comprising means for paging of a portable radio terminal upon request by the telepoint transceiver controller, means for receiving and forwarding to the telepoint transceiver controller responses to paging, and means for receiving access requests from portable radio terminals and forwarding them to the telepoint transceiver controller;

the telepoint transceiver controller comprising means for receiving a call from the telecommunication network to a portable terminal and initiating a broadcast paging of the portable terminal from all telepoint radio transceivers connected to the telepoint transceiver controller, means for receiving a response to a paging from a telepoint radio transceiver or an access request from a telepoint radio transceiver and forwarding a call to or from a portable radio terminal via a connected serving telepoint radio transceiver to the telecommunication network;

the portable radio terminal comprising means for scanning of radio channels used by exchange radio transceiver or telepoint radio transceiver, means for receiving radio signals at scanning and determining from received radio signals information on identity of transmitting transceiver, if any, means for choosing as serving transceiver a transceiver of appropriate received radio signals, if any, and means for calling via a telepoint radio transceiver and transceiver controller the branch exchange to whom the portable radio terminal constitutes an extension and reporting to the branch exchange extension location store the identity of the telepoint transceiver controller of the choosen radio transceiver when a telepoint radio transceiver is choosen as serving transceiver;

in which combination a call to a portable radio terminal constituting an extension to a private branch exchange being set up by the telecommunication network to the branch exchange in accordance with information on the portable radio terminal in the network subscriber store; and

when receiving a call from the network to a portable radio terminal having reported to the extension location store as being served by a telepoint radio transceiver the branch exchange forwarding the call back to the telecommunication network as a call to the telepoint transceiver controller connected to the serving telepoint radio transceiver.

5. A combination according to claim 4 comprising plural subscriber residential equipments for subscribers to the network, each subscriber residential equipment comprising a residential base radio station connected to the network and a portable radio terminal;

the residential base radio station comprising a residential radio transceiver and a residential location store for information on the portable radio terminal constituting part of the same subscriber residential equipment;

the portable radio terminal of the subscriber residential equipment comprising means for scanning of radio channels used by the residential radio transceiver or exchange radio transceiver or telepoint radio transceiver, means for receiving radio signals at scanning and determining from received radio signals information on identity of transmitting transceiver, if any, means for choosing as serving transceiver a transceiver of appropriate received radio signals, if any, and means for calling via a telepoint transceiver controller or a branch exchange the residential base radio station constituting part of the same subscriber equipment and reporting to the residential location store the identity of choosen radio transceiver when other than the residential radio transceiver constituting part of the same subscriber residential equipment;

in which combination a call to a portable radio terminal constituting part of a subscriber residential equipment being set up by the telecommunication network to the residential base radio station constituting part of the same subscriber equipment in accordance with information on the portable radio terminal in the network subscriber store; and

when receiving a call from the network to a portable radio terminal having reported to the residential location store as being served by an other transceiver than the residential radio transceiver the residential base radio station forwarding the call back to the telecommunication network as a call to the telepoint transceiver controller of the serving telepoint radio transceiver or the branch exchange of the ser-ving exchange radio transceiver.

6. A combination according to claim 4 wherein the branch exchange comprises plural extension numbers for temporary use by visiting portable radio terminals not normally constituting extensions to the branch exchange;

the branch exchange allotting a vacant extension number to a visiting portable radio terminal to be served by an exchange transceiver of the branch exchange;

the branch exchange paging visiting portable radio terminals having allotted extension numbers of the exchange;

the branch exchange withdrawing from use allotted extension numbers of visiting portable radio terminals not responding to paging; and

the branch exchange setting up a call through the switched network for informing the location store of the visiting portable radio terminal on the withdrawal of the use of the allotted extension number.

7. A combination of a public switched telecommunication network, a telepoint radio station connected to the telecommunication network and a subscriber residential equipment comprising a residential base radio station connected to the telecommunication network and a portable radio terminal;

the telecommunication network comprising a network subscriber store for information on network subscribers including the subscriber residential equipment and the telepoint station, means for connecting subscriber equipment to the network, and means for setting up calls to and from connected subscriber equipment in accordance with information in the network subscriber store;

the telepoint radio station comprising a telepoint radio transceiver for radio communication with portable radio terminals, means for receiving an access request from and forwarding a call from a served portable radio terminal to the telecommunication network, means for paging a served radio terminal called by the telecommunication network, and means for forwarding a call from the telecommunication network to a paged and responding served portable radio terminal;

the residential base radio station comprising a residential radio transceiver for radio communication with the portable radio terminal and a residential location store for information on the portable radio terminal constituting part of the same subscriber residential equipment;

the portable radio terminal of the subscriber residential equipment comprising means for scanning of radio channels used by the residential radio transceiver or telepoint radio transceiver, means for receiving radio signals at scanning and determining from received radio signals information on identity of transmitting transceiver, if any, means for choosing as serving transceiver a transceiver of appropriate received radio signals, if any, and means for calling via a telepoint station and the telecommunication network the residential base radio station constituting part of the same subscriber equipment and reporting to the residential location store the identity of choosen radio transceiver when other than the residential radio transceiver constituting part of the same subscriber residential equipment;

in which combination a call to a portable radio terminal constituting part of a subscriber residential equipment being set up by the telecommunication network to the residential base radio station constituting part of the same subscriber equipment in accordance with information on the portable radio terminal in the network subscriber store; and

when receiving a call from the network to a portable radio terminal having reported to the residential location store as being served by an other transceiver the residential base radio station forwarding the call back to the telecommunication network as a call to the telepoint radio station comprising the serving transceiver.

8. A combination according to claim 7 wherein the telepoint radio station stores identities of served portable radio terminals;

the telepoint station pages served portable radio terminals in order to check the presense of served portable radio terminal;

the telepoint station waits for answers to its paging from paged served portable radio terminals; and

the telepoint station sets up a call through the switched network for informing the location store of a non answering previously served portable radio terminal that the portable radio terminal is no longer served by the telepoint.

9. A combination of a public switched telecommunication network, a telepoint transceiver controller connected to the telecommunication network, a plurality of telepoint radio transceivers connected to the telepoint transceiver controller, a subscriber residential equipment comprising a residential base radio station connected to the telecommunication network and a portable radio terminal;

the telecommunication network comprising a network subscriber store for information on network subscribers including the subscriber residential equipment and the telepoint transceiver controller, means for connecting subscriber equipment to the network, and means for setting up calls to and from connected subscriber equipment in accordance with information in the network subscriber store;

each telepoint radio transceviver comprising means for paging of a portable radio terminal upon request by the telepoint transceiver controller, means for receiving and forwarding to the telepoint transceiver controller responses to paging, and means for receiving access requests from portable radio terminals and forwarding them to the telepoint transceiver controller;

the telepoint transceiver controller comprising means for receiving a call from the telecommunication network to a portable terminal and initiating a broadcast paging of the portable terminal from all telepoint radio transceivers connected to the telepoint transceiver controller, means for receiving a response to a paging from a telepoint radio transceiver or an access request from a telepoint radio transceiver and forwarding a call to or from a portable radio terminal via a connected serving telepoint radio transceiver to the telecommunication network;

the residential base radio station comprising a residential radio transceiver for radio communication with the portable radio terminal and a residential location store for information on the portable radio terminal constituting part of the same subscriber residential equipment;

the portable radio terminal of the subscriber residential equipment comprising means for scanning of radio channels used by the residential radio transceiver or telepoint radio transceiver, means for receiving radio signals at scanning and determining from received radio signals information on identity of transmitting transceiver, if any, means for choosing as serving transceiver a transceiver of appropriate received radio signals, if any, and means for calling via a telepoint station and the telecommunication network the residential base radio station constituting part of the same subscriber equipment and reporting to the residential location store the identity of choosen radio transceiver when other than the residential radio transceiver constituting part of the same subscriber residential equipment;

in which combination a call to a portable radio terminal constituting part of a subscriber residential equipment being set up by the telecommunication network to the residential base radio station constituting part of the same subscriber equipment in accordance with information on the portable radio terminal in the network subscriber store; and

when receiving a call from the network to a portable radio terminal having reported to the residential location store as being served by telepoint radio transceiver the residential base radio station forwarding the call back to the telecommunication network as a call to the telepoint transceiver controller connected to the serving telepoint radio transceiver.

10. A combination according to claim 9 wherein the telepoint transceiver controller stores identities of served portable radio terminals;

the telepoint transceiver initiates broadcast paging of served portable radio terminals in order to check the accessability of served portable radio terminal;

the telepoint transceiver controller waits for answers to the broadcast paging from paged served portable radio terminals; and

the telepoint transceiver controller sets up a call through the switched network for informing the location store of a non answering previously served portable radio terminal that the portable radio terminal is no longer served by the telepoint.

11. A combination of a public switched telecommunication network, a private automatic branch exchange connected to the telecommunication network, plural portable radio terminals constituting extensions to the branch exchange, and a telepoint radio station connected to the telecommunication network;

the telecommunication network comprising a network subscriber store for information on network subscribers including the branch exchange and the telepoint station, means for connecting subscriber equipment to the network, and means for setting up calls to and from connected subscriber equipment in accordance with information in the network subscriber store;

the branch exchange comprising an exchange switch, exchange radio transceivers connected to the switch, and an extension location store for information on portable radio terminals constituting extension terminals to the branch exchange;

the telepoint radio station comprising a telepoint radio transceiver for radio communication with portable radio terminals, means for receiving an access request from and forwarding a call from a served portable radio terminal to the telecommunication network, means for receiving a call from the network, means for paging a served radio terminal according to information in a call from the telecommunication network, and means for forwarding a call from the telecommunication network to a paged and responding served portable radio terminal;

the portable radio terminal comprising means for scanning of radio channels used by exchange radio transceiver or telepoint radio transceiver, means for receiving radio signals at scanning and determining from received radio signals information on identity of transmitting transceiver, if any, means for choosing as serving transceiver a transceiver of appropriate received radio signals, if any, and means for calling via a telepoint station and the network the branch exchange to whom the portable radio terminal constitutes an extension or the network subscriber store and reporting to the extension location store or the network subscriber store the identity of choosen radio transceiver when other than one of the exchange radio transceivers of the same branch exchange;

the telecommunication network, when receiving a call to a portable radio terminal constituting an extension to a private branch exchange, setting up a call to the branch exchange or to the telepoint station in accordance with information on the portable radio terminal in the network subscriber store; and

the branch exchange when receiving a call to a portable radio terminal having reported to the extension location store as being served by a telepoint radio transceiver forwarding the call to the telecommunication network as a call to the telepoint station comprising the serving radio transceiver.

12. A combination according to claim 11 wherein the branch exchange comprises plural extension numbers for temporary use by visiting portable radio terminals not normally constituting extensions to the branch exchange;

the branch exchange allotting a vacant extension number to a visiting portable radio terminal to be served by an exchange transceiver of the branch exchange;

the branch exchange paging visiting portable radio terminals having allotted extension numbers of the exchange;

the branch exchange withdrawing from use allotted extension numbers of visiting portable radio terminals not responding to paging; and

the branch exchange setting up a call through the switched network for informing the location store of the visiting portable radio terminal on the withdrawal of the use of the allotted extension number.

13. A combination of a switched telecommunication network, a branch exchange connected to the telecommunication network, a plurality of portable radio terminals constituting extension terminals to the branch exchange, a telepoint transceiver controller connected to the telecommunication network, and a plurality of telepoint radio transceivers connected to the telepoint transceiver controller;

the telecomminication network comprising a network subscriber store for information on network subscribers including the branch exchange and the telepoint transceiver controller, means for connecting subscriber equipment to the network, and means for setting up calls to and from connected subscriber equipment in accordance with information in the subscriber store;

the branch exchange comprising an exchange switch, exchange radio transceivers connected to the switch, and an extension location store for information on portable radio terminals constituting extension terminals to the branch exchange;

each telepoint radio transceviver comprising means for paging of a portable radio terminal upon request by the telepoint transceiver controller, means for receiving and forwarding to the telepoint transceiver controller responses to paging, and means for receiving access requests from portable radio terminals and forwarding them to the telepoint transceiver controller;

the telepoint transceiver controller comprising means for receiving a call from the telecommunication network to a portable terminal and initiating a broadcast paging of the portable terminal from all telepoint radio transceivers connected to the telepoint transceiver controller, means for receiving a response to a paging from a telepoint radio transceiver or an access request from a telepoint radio transceiver and forwarding a call to or from a portable radio terminal via a connected serving telepoint radio transceiver to the telecommunication network;

the portable radio terminal comprising means for scanning of radio channels used by exchange radio transceiver or telepoint radio transceiver, means for receiving radio signals at scanning and determining from received radio signals information on identity of transmitting transceiver, if any, means for choosing as serving transceiver a transceiver of appropriate received radio signals, if any, and means for calling via a telepoint radio transceiver and transceiver controller the branch exchange to whom the portable radio terminal constitutes an extension or the network subscriber store and reporting to the branch exchange extension location store or to the network subscriber store the identity of the telepoint transceiver controller of the choosen radio transceiver when a telepoint radio transceiver is choosen as serving transceiver;

the telecommunication network when receiving a call to a portable radio terminal constituting an extension to a private branch exchange setting up a call to the branch exchange or to the telepoint transceiver controller in accordance with information on the portable radio terminal in the network subscriber store; and

the branch exchange when receiving a call to a portable radio terminal having reported to the extension location store as being served by a telepoint radio transceiver forwarding the call to the telecommunication network as a call to the telepoint transceiver controller comprising the serving radio transceiver.

14. A combination according to claim 13 wherein the branch exchange comprises plural extension numbers for temporary use by visiting portable radio terminals not normally constituting extensions to the branch exchange;

the branch exchange allotting a vacant extension number to a visiting portable radio terminal to be served by an exchange transceiver of the branch exchange;

the branch exchange paging visiting portable radio terminals having allotted extension numbers of the exchange in order to check their presence;

the branch exchange awaits answers from paged visiting portable radio terminals;

the branch exchange withdrawing from use allotted extension numbers of visiting portable radio terminals not responding to paging; and

the branch exchange setting up a call through the switched network for informing the location store of the visiting portable radio terminal on the withdrawal of the use of the allotted extension number.

15. A combination of a public switched telecommunication network, a telepoint radio station connected to the telecommunication network and a subscriber residential equipment comprising a residential base radio station connected to the telecommunication network and a portable radio terminal;

the telecommunication network comprising a network subscriber store for information on network subscribers including the subscriber residential equipment and the telepoint station, means for connecting subscriber equipment to the network, and means for setting up calls to and from connected subscriber equipment in accordance with information in the network subscriber store;

the telepoint radio station comprising a telepoint radio transceiver for radio communication with portable radio terminals, means for receiving an access request from and forwarding a call from a served portable radio terminal to the telecommunication network, means for receiving a call from the network, means for paging a served radio terminal according to information in a call from the telecommunication network, and means for forwarding a call from the telecommunication network to a paged and responding served portable radio terminal;

the residential base radio station comprising a residential radio transceiver for radio communication with the portable radio terminal and a residential location store for information on the portable radio terminal constituting part of the same subscriber residential equipment;

the portable radio terminal of the subscriber residential equipment comprising means for scanning of radio channels used by the residential radio transceiver or telepoint radio transceiver, means for receiving radio signals at scanning and determining from received radio signals information on identity of transmitting transceiver, if any, means for choosing as serving transceiver a transceiver of appropriate received radio signals, if any, and means for calling via a telepoint station and the telecommunication network the residential base radio station constituting part of the same subscriber equipment or the network subscriber store and reporting to the residential location store or the network subscriber store the identity of choosen radio transceiver when other than the residential radio transceiver constituting part of the same subscriber residential equipment;

the telecommunication network when receiving a call to a portable radio terminal constituting part of a subscriber residential equipment setting up the call to the residential base radio station constituting part of the same subscriber equipment or the telepoint radio station in accordance with information on the portable radio terminal in the network subscriber store; and

when receiving a call to a portable radio terminal having reported to the residential location store as being served by an other transceiver the residential base radio station forwarding the call to the telecommunication network as a call to the telepoint radio station comprising the serving transceiver.