Selective call system with message rebroadcasting over another selective call system

• US 5,047,763 A
• Filed: 11/30/1989
• Issued: 09/10/1991
• Est. Priority Date: 11/30/1989
• Status: Expired due to Term

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Schwendeman, Robert J., Kuznicki, William J.
• Primary Examiner(s): Yusko, Donald J.
• Assistant Examiner(s): Giust, John
• Application Number:
  US07/444,489
• Time in Patent Office: 649 Days
• Field of Search: 379/219, 379/220, 379/221, 379/57, 379/58, 379/63, 379/56, 340/825.26, 340/825.27, 340/825.44, 455/33, 455/34
• US Class Current: 340/7.29
• CPC Class Codes: H04W 84/022 One-way selective calling networks, e.g. wide area paging

Abstract

A method and apparatus selectively rebroadcasts information received from a first selective call network system by a second selective call network system. A selective call receiver monitors the messages broadcast by the first selective call network system and, when no messages comprising the preamble code of the selective call receiver are received, the selective call receiver will, from time to time, monitor the messages transmitted by the second selective call network, including the messages rebroadcast from the first selective call network system.

Claims

1. A selective call system having a first selective call service and a second selective call service, comprising:

first RF transmission means for transmitting messages in the first selective call service;

a first plurality of selective call receivers for receiving said messages transmitted by said first selective call service;

receiving means for receiving said messages transmitted by said first RF transmission means; and

second RF transmission means coupled to said receiving means for retransmitting selected ones of said messages over the second selective call service.

2. The selective call system of claim 1 wherein said first selective call service is a satellite paging service.

3. The selective call system of claim 1 wherein said first selective call service is a wide-area paging service and said second selective call service is an on-site paging service.

4. The selective call system of claim 1 wherein said first selective call service is an on-site paging service and said second selective call service is a wide-area paging service.

5. The selective call system of claim 1 further comprising a second plurality of selective call receivers for receiving selective call messages transmitted by said second RF transmission means including said messages received by said receiving means and retransmitted by said second RF transmission means.

6. The selective call system of claim 1 wherein said second RF transmission means comprises:

first memory means for storing a first plurality of addresses;

decoding means coupled to said first receiving means for decoding said messages transmitted by said first RF transmission means, said messages comprising an address portion and an information portion;

comparsion means for comparing the address portion of said messages to said first plurality of addresses;

broadcasting means for transmitting said information portion of one of said messages if said address portion of said one of said messages is substantially equivalent to one of said first plurality of addresses.

7. The selective call system of claim 6 further comprising:

ack-back receiver means for receiving ack-back information received from said second selective call service; and

memory maintenance means for adding addresses to or deleting addresses from said first memory means in response to said ack-back information.

8. The selective call system of claim 6 wherein said broadcasting means comprises:

second memory means for storing a second plurality of addresses;

selective call message formation means for forming a selective call message if said address portion of said one of said messages is substantially equivalent to one of said first plurality of addresses by combining said information means of said one of said messages with one of said second plurality of addresses, said one of said second plurality of addresses corresponding to said address portion of said one of said messages; and

transmitting means for broadcasting said selective call message.

9. A method in a first selective call system comprising the steps of:

receiving a first RF signal comprising selective call messages, each of said selective call messages having an address portion and an information portion, said signal transmitted by a second selective call system;

decoding said first RF signal;

decoding ack-back information received from said first selective call network system;

generating and maintaining an active selective call receiver users list having a plurality of addresses determined in response to said ack-back information;

comparing the address portion of each of said selective call messages to each of said addresses included in said active selective call receiver users list;

combining a first selective call system address with said information portion of one of said selective call messages to form a first selective call system message if said address portion of said one of said selective call messages is substantially equivalent to one of said plurality of predetermined addresses, said first selective call system address assigned to a selective call receiver having an address in said second selective call system identified by said address portion of said one of said selective call messages; and

transmitting a second RF signal comprising said first selective call system message.

10. A selective call communications system for communicating messages, each of said messages comprising an address portion and an information portion comprising:

a first radio frequency (RF) transmitter for transmitting a first portion of said messages on a first selective call communications path;

a second RF transmitter for transmitting a second portion of said messages on a second selective call cummunications path;

rebroadcasting means coupled to said second RF transmitter for providing to said second RF transmitter for transmission on said second selective call cammunications path selected ones of said first portion of said messages received on said first selective call communications path, said selected ones of said first portions of said messages selected in response to the address portions thereof; and

at least one selective call receiver, each of said at least one selective call receiver comprising;

receiving means for receiving the messages on said first and second selective call communications paths;

first monitoring means coupled to said receiving means for monitoring said second selective call communications path for one of said messages having a predetermined address portion; and

second monitoring means coupled to said receiving means and said first monitoring means for monitoring said first selective call communications path when said one of said messages having said predetermined address is not present on said second selective call communications path.

11. The selective call communications system of claim 10 wherein said second monitoring means monitors said first selective call communications path from time to time when said predetermined message is not present on said second selective call communications path.

12. A method in a first selective call network system comprising a transmitter for transmitting first paging signals and a receiver for receiving second paging signals transmitted from a second selective call network system for reception by at least one selective call receiver, the method comprising the steps of:

receiving said second paging signals comprising selective call messages, each of said selective call messages having an address portion and an information portion;

decoding said second paging signals;

comparing the address portion of each of said selective call messages to a plurality of predetermined addresses;

combining a first selective call system address with said information portion of one of said selective call messages to form a first selective call system message if said address portion of said one of said selective call messages is substantially equivalent to one of said plurality of predetermined addresses, said first selective call system address assigned to one of said at least one selective call receiver having an address in said second selective call network system identified by said address portion of said one of said selective call messages; and

transmitting said first paging signals comprising said first selective call system message.

13. The method of claim 12 wherein said first selective call network system is a wide area network system and said second selective call network system is an on-site network system.

14. The method of claim 12 wherein said first selective call network system is an on-site network system and said second selective call network system is a wide area network system.

15. The method of claim 12 wherein said step of combining the first selective call system address with the information portion to form a first selective call system message comprises the steps of:

determining if said information portion corresponding to said address portion comprises telephone number data if said address portion of said one of said selective call messages is substantially equivalent to one of said plurality of predetermined addresses, said telephone number data having a first telephone number format;

converting said telephone number data from said first telephone number format to a second telephone number format; and

combining a first selective call system address corresponding to said address portion with said information portion having telephone number data in said second telephone number format to form a first selective call system message if said address portion of said one of said selective call messages is substantially equivalent to one of said plurality of predetermined addresses.

16. The method of claim 15 wherein said first selective call network system is a wide area selective call network system, said second selective call network system is an on-site selective call network system, said first telephone number format is a seven-digit telephone number format, and said second telephone number format is a four-digit telephone number format.

17. The method of claim 15 wherein said first selective call network system is a wide area selective call network system, said second selective call network system is an on-site selective call network system, said first telephone number format is a seven-digit telephone number format, and said second telephone number format is a three-digit telephone number format.

18. The method of claim 15 wherein said first selective call network system is a wide area selective call network system, said second selective call network system is an on-site selective call network system, said first telephone number format is a ten-digit telephone number format, and said second telephone number format is a four-digit telephone number format.

19. The method of claim 15 wherein said first selective call network system is a wide area selective call network system, said second selective call network system is an on-site selective call network system, said first telephone number format is a ten-digit telephone number format, and said second telephone number format is a three-digit telephone number format.

20. The method of claim 15 wherein said first selective call network system is an on-site selective call network system, said second selective call network system is a wide area selective call network system, said first telephone number format is a four-digit telephone number format, and said second telephone number format is a seven-digit telephone number format.

21. The method of claim 15 wherein said first selective call network system is an on-site selective call network system, said second selective call network system is a wide area selective call network system, said first telephone number format is a three-digit telephone number format, and said second telephone number format is a seven-digit telephone number format.

22. The method of claim 15 wherein said first selective call network system is an on-site selective call network system, said second selective call network system is a wide area selective call network system, said first telephone number format is a four-digit telephone number format, and said second telephone number format is a ten-digit telephone number format.

23. The method of claim 18 wherein said first selective call network system is an on-site selective call network system, said second selective call network system is a wide area selective call network system, said first telephone number format is a three-digit telephone number format, and said second telephone number format is a ten-digit telephone number format.