Personal mobile communications system having central station for paging mobile users via base stations

Claim 2

A personal mobile communications system for servicing a plurality of cells, comprising: a plurality of base stations (4-1-4-4) located in respective cells (5-1-5-4), each of said base stations being connected to a public switched telephone network (PSTN); and a central station (8) connected to said PSTN (1) for receiving a PSTN user address code and a mobile user address code from the PSTN (1) when a PSTN user places a call to a mobile user and broadcasting the received PSTN user and mobile user address codes over an area (3) covering said plurality of cells; one or more of said base stations (4-1-4-4) receiving the PSTN user and mobile user address codes from the central station (8) and, in response, broadcasting an alert signal for alerting mobile stations, and one of the base stations dialing the received PSTN user address code to said PSTN when a mobile station (10) identified by the received mobile user address code goes off hook so that a connection (15; 147-149; 176-178) is established in the PSTN between the PSTN user and the mobile user.

Claim 3

A personal mobile communications system as claimed in claim 1, wherein each of said base stations includes a position registration memory (72) and control means (71, 801; 822) for storing a position registration request from the mobile station into said position registration memory (72), said position registration request including a mobile user address code identifying said mobile station, and means (71, 814; 830) broadcasting said alert signal when a match is detected between the mobile user address code received from said central station (8) and the stored mobile user address code.

Claim 4

A personal mobile communications system as claimed in claim 1, wherein each of said base stations includes a position registration memory (72) and control means (71, 801-804, 811-816) for storing a position registration request from the mobile station into said memory (72), said position registration request including a mobile user address code identifying said mobile station, transmitting a copy of the received position registration request to neighboring base stations (4-1, 4-3), receiving and storing said copy of said request from a neighboring base station (4-1) if said request is not directly received from said mobile station, and broadcasting said alert signal when a match is detected between the mobile user address code received from said central station (8) and the stored mobile user address code.

Claim 5

A personal mobile communications system as claimed in claim 1, wherein each of said base stations includes a position registration memory (72) and control means (71, 821-832) for storing a position registration request from a mobile station into said memory (72), said position registration request including a mobile user address code identifying the mobile station, broadcasting said alert signal and transmitting a copy of the received position registration request to neighboring base stations (4-1, 4-3) when a match is detected between the mobile user address code received from said central station (8) and the stored mobile user address code, receiving and storing said copy of said request from a neighboring base station (4-1) and broadcasting said alert signal if said request is not directly received from said mobile station.

Claim 6

A personal mobile communications system as claimed in anyone of claims 1 to 4, wherein each of said base station (4-1-4-3) further comprises means (121, 122) for receiving a position registration request from a mobile station (10) identifying the mobile station and transmitting the received request and a base station identifier to said central station via said PSTN, and broadcasting said alert signal when said call-setup signal contains the base station identifier of the base station, wherein said central station (8) further comprises a position registration memory (110), and control means (131, 132, 135, 136) for receiving and storing the position registration request from the base stations into said position registration memory (110), selecting one of said base stations (4-2) identified by the base station identifier stored in said position registration memory (110), and broadcasting said call-setup signal additionally containing said base station identifier.

Claim 7

A personal mobile communications system as claimed in claim 5, wherein said call-setup signal transmitted from the central station (8) additionally contains the base station identifiers of base stations (4-1, 4-3) in the neighborhood of said one base station (4-2).

Claim 8

A personal mobile communications system comprising: a local switching system (141) located in a premises (140) and connected to a public switched telephone network (PSTN); a plurality of base stations (4'-1-4'-3, 4-4) located in respective cells (140, 5-4), each of said base stations being located in said premises and connected to said local switching system (141); a central station (8) connected to said PSTN (1) for receiving a PSTN user address code and a mobile user address code from the PSTN (1) when a PSTN user places a call to a mobile user and broadcasting the received PSTN user and mobile user address codes over an area (3) covering said premises (140) and at least one cell (5-4); receiver means (143) for receiving said call-setup signal from said central station (8) and transmitting the received call-setup signal to said local switching system (141), said local switching system including means (153, 157-159) for receiving the call-setup signal from said receiver means (143) and, in response, transmitting an alert signal to the base stations (4'-1-4'-3) located in said premises (140) and dialing the PSTN user address code contained in the received call-setup signal to said PSTN when a mobile station (10b) identified by the mobile user address code contained in said call-setup signal goes off hook so that a connection (147-149) is established in the PSTN between the PSTN user and the mobile user.

Claim 9

A personal mobile communications system comprising: a local switching system (141) located in a premises (140) and connected to a public switched telephone network (PSTN); a plurality of base stations (4'-1-4'-3, 4-4) located in respective cells (140, 5-4), each of said base stations being located in said premises and connected to said local switching system (141); a central station (8) connected to said PSTN (1) for receiving a PSTN user address code and a mobile user address code from the PSTN (1) when a PSTN user places a call to a mobile user and broadcasting the received PSTN user and mobile user address codes over an area (3) covering said premises (140) and at least one cell (5-4); receiver means (143) for receiving said call-setup signal from said central station (8) and transmitting the received call-setup signal to said local switching system (141), said local switching system including means (153, 157-159) for receiving the call-setup signal from said receiver means (143) and, in response, transmitting an alert signal to the base stations (4'-1-4'-3) located in said premises (140) and dialing the PSTN user address code contained in the received call-setup signal to said PSTN when a mobile station (10b) identified by the mobile user address code contained in said call-setup signal goes off hook so that a connection (147-149) is established in the PSTN between the PSTN user and the mobile user.

Claim 10

A personal mobile communications system comprising: a local switching system (141) located in a premises (140) and connected to a public switched telephone network (PSTN); a plurality of base stations (4'-1-4'-3, 4-4) located in respective cells (140, 5-4), each of said base stations being located in said premises and connected to said local switching system (141); a central station (8) connected to said PSTN (1) for receiving a PSTN user address code and a mobile user address code from the PSTN (1) when a PSTN user places a call to a mobile user and broadcasting the received PSTN user and mobile user address codes over an area (3) covering said premises (140) and at least one cell (5-4); receiver means (143) for receiving a position registration request from a mobile station, said position registration request including a mobile user address code identifying the mobile station, and receiving said call-setup signal from said central station (8) and transmitting the received position registration request and call-setup signal to said local switching system (141 said local switching system including means (151-153, 157-159) for receiving and storing the position registration request from said receiver means (143) into a position registration memory (142), and receiving and storing the call-setup signal from said receiver means (143) into an address memory (144), transmitting an alert signal to the base stations (4'-1-4'-3) located in said premises (140) when there is a match between the mobile user address code stored in said address memory (144) and the position registration request stored in said position registration memory (142), and dialing the PSTN user address code stored in the address memory (144) to said PSTN when a mobile station (10b) identified by the mobile user address code stored in the address memory (144) goes off hook so that a connection (147-149) is established in the PSTN between the PSTN user and the mobile user.

Claim 11

A personal mobile communications system comprising: a local switching system (141) located in a premises (140) and connected to a public switched telephone network (PSTN); a plurality of base stations (4'-1-4'-3, 4-4) located in respective cells (140, 5-4), each of said base stations being located in said premises and connected to said local switching system (141); a central station (8) connected to said PSTN (1) for receiving a PSTN user address code and a mobile user address code from the PSTN (1) when a PSTN user places a call to a mobile user and broadcasting the received PSTN user and mobile user address codes over an area (3) covering said premises (140) and at least one cell (5-4); receiver means (143) for receiving a position registration request from a mobile station, said position registration request including a mobile user address code identifying the mobile station, and receiving said call-setup signal from said central station (8) and transmitting the received position registration request and call-setup signal to said local switching system (141 said local switching system including means (151-153, 157-159) for receiving and storing the position registration request from said receiver means (143) into a position registration memory (142), and receiving and storing the call-setup signal from said receiver means (143) into an address memory (144), transmitting an alert signal to the base stations (4'-1-4'-3) located in said premises (140) when there is a match between the mobile user address code stored in said address memory (144) and the position registration request stored in said position registration memory (142), and dialing the PSTN user address code stored in the address memory (144) to said PSTN when a mobile station (10b) identified by the mobile user address code stored in the address memory (144) goes off hook so that a connection (147-149) is established in the PSTN between the PSTN user and the mobile user.

Claim 12

A personal mobile communications system as claimed in claim 1, 2, 3, 4, 5 or 6, further comprising: switching means (170) for establishing a first connection (179) between the PSTN and said central station (8) for coupling the call-setup signal from the PSTN to the central station and establishing a second connection (177, 178, 179) between one of said base stations (4-2) and said PSTN user station (2), instead of said first connection, in response to a dialing signal from said one base station (4-2) when the PSTN user address code is dialled.

Claim 13

A personal mobile communications system as claimed in claim 7 or 8, further comprising: switching means (170) for establishing a first connection (179) between the PSTN and said central station (8) for coupling the call-setup signal from the PSTN to the central station and establishing a second connection (177, 178, 179) between said local switching system (141) and said PSTN user station (2), instead of said first connection, in response to a dialing signal from said local switching system when the PSTN user address code is dialled.

Claim 14

A personal mobile communications system as claimed in any one of claims 1 through 10, wherein said central station is a paging station (8) for broadcasting paging signals for alerting radio pagers located in said area.

Claim 15

A personal mobile communications system as claimed in any one of claims 1 through 11, wherein said central station receives said call-setup signal from a common channel signalling network (17) of said PSTN.

Claim 16

A personal mobile communications system for servicing a plurality of cells, comprising: a plurality of base stations (200-1, 200-2) located in respective cells (201-1, 201-2), each of said base stations being connected to a public switched telephone network (PSTN) and including a transmit/receive means (203, 203-2) for establishing a two-way channel to the transceiver of an adjacent base station; each of said base stations (200-1, 200-2) receiving a signal from a mobile station indicating that the mobile station is crossing a boundary between said base stations during a conversation with a PSTN user through a connection established in said PSTN, and coupling said connection to the transmit/receive means (203-1) of the base station, each of said base stations, on receiving a signal from the transmit/receive means of the base station, coupling the received signal to said mobile station.

Claim 17

A personal mobile communications system for servicing a plurality of cells, comprising: a plurality of base stations (200-1, 200-2) located in respective cells (201-1, 201-2), each of said base stations being connected to a public switched telephone network (PSTN) and including a transmit/receive means (203, 203-2) for establishing a two-way channel to the transceiver of an adjacent base station; each of said base stations (200-1, 200-2) receiving a signal from a mobile station indicating that the mobile station is crossing a boundary between said base stations during a conversation with a PSTN user through a connection established in said PSTN, and coupling said connection to the transmit/receive means (203-1) of the base station, each of said base stations, on receiving a signal from the transmit/receive means of the base station, coupling the received signal to said mobile station.

Claim 18

A personal mobile communications system as claimed in claim 13, wherein the transmit/receive means (203) of each base station is a radio transceiver for establishing a two-way radio channel.