Nationwide satellite message delivery system

• US 5,394,560 A
• Filed: 09/30/1992
• Issued: 02/28/1995
• Est. Priority Date: 09/30/1992
• Status: Expired due to Term

• Current Assignee: Motorola Mobility, Inc. (Lenovo Group Ltd.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Kane, John R.
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): Pham, Chi H.
• Application Number:
  US07/954,634
• Time in Patent Office: 881 Days
• Field of Search: 455/12.1, 455/13.1, 455/13.2, 455/33.1, 455/51.1, 455/51.2, 455/54.1, 455/56.1, 340/825.44, 340/825.03, 340/311.1, 379/57, 379/58, 370/97, 370/104.1
• US Class Current: 455/12.1
• CPC Class Codes: H04B 7/18567 Arrangements for providing additional services to the basic mobile satellite telephony service
• CPC Class Codes: H04W 84/022 One-way selective calling networks, e.g. wide area paging

Abstract

A multi-regional message delivery system (100) delivers messages from a central hub (108) to a number of message transmission regions (102,104,106) for transmission of the messages therein. The central hub 108) receives messages, encodes the messages, and transmits the encoded messages in a number of message data pipes (304) in a message delivery signal (302). A satellite (122) receives the transmitted message delivery signal (302) and then transmits the message delivery signal (302) to a number of regional stations (130,132,134) located in the message transmission regions. The regional stations receive the transmitted message delivery signal (302), select at least one of the data pipes (304) in the message delivery signal (302), and transmit the encoded messages within the message transmission regions.

Claims

1. A communication system for delivering messages to portable selective call receivers, the communication system comprising:

a paging terminal for receiving page requests from at least one originating device, processing the page requests, and outputting messages through a plurality of output sections in response to the processed page requests, the messages comprising data bits being outputted at a first predefined data bit rate;

a multiplexing module comprising a plurality of inputs coupled to the plurality of output sections of the paging terminal, respectively, for multiplexing the data bits of the messages being outputted from the output sections into one multiplexed signal comprising the data bits of the messages organized into a plurality of data pipes with each one of the plurality of data pipes corresponding to the data bits of the messages being outputted from each one of the plurality of output sections, respectively, and the multiplexed signal being transmitted from an output of the multiplexing module at a second data bit rate;

a satellite transmitting station having an input coupled to the output of the multiplexing module for receiving the multiplexed signal therefrom, and for transmitting a first satellite transmission including the multiplexed signal over a first satellite communication channel;

a satellite transceiver located over a geographic area for receiving the first satellite transmission including the multiplexed signal over the first satellite communication channel, and transmitting a second satellite transmission including the multiplexed signal over a second satellite communication channel, the satellite transceiver being oriented to cover at least a portion of the geographic area with the second satellite transmission over the second satellite communication channel;

at least one satellite receiving station located in at least one coverage region, within the geographic area, each of the at least one satellite receiving station operating to receive the second satellite transmission including the multiplexed signal over the second satellite communication channel and to provide the multiplexed signal at an output of each of the at least one satellite receiving station;

at least one demultiplexing module corresponding to the at least one satellite receiving station, respectively, each of the at least one demultiplexing module comprising an input coupled to the output of a corresponding one of the at least one satellite receiving station, respectively, for receiving the multiplexed signal at the input, and for selectively demultiplexing a predetermined one of the plurality of data pipes from the multiplexed signal for providing at an output of the at least one demultiplexing module the data bits of the messages organized into the predetermined one of the plurality of data pipes, the data bits being transmitted at the output of the at least one demultiplexing module at the first data bit rate; and

at least one paging transmitting base station comprising an input coupled to the output of the at least one demultiplexing module, respectively, for receiving the data bits being transmitted at the output of the at least one demultiplexing module and then transmitting the messages represented by the data bits over a paging communication channel covering at least one coverage region within the geographic area, the paging communication channel providing the messages for reception by at least one selective call receiver located within the at least one coverage region.

2. The communication system of claim 1, wherein the multiplexed signal is transmitted from the output of the multiplexing module at the second data bit rate which is a multiple of the first predefined data bit rate times the number of output sections in the plurality of output sections of the paging terminal.

3. The communication system of claim 1, wherein the satellite transceiver is located in a geostationary position over the geographic area for covering at least a portion thereof with the second satellite transmission.

4. The communication system of claim 1, wherein the paging communication channel for transmitting the messages thereover is the same for each of the at least one coverage region, respectively, within the geographic area.

5. The communication system of claim 1, wherein

the paging terminal comprises memory means for storing subscriber information and a regional map, the subscriber information identifying a plurality of regional codes for at least one subscribing selective call receiver that can roam between a plurality of coverage regions identified by the plurality of regional codes, and the regional map mapping the plurality of regional codes into the plurality of data pipes in the multiplexed signal, the subscriber information for the at least one subscribing selective call receiver being modifiable at the memory means to identify an itinerary of a roaming at least one subscribing selective call receiver;

and wherein

each of the at least one demultiplexing module corresponding to the at least one satellite receiving station, respectively, selectively demultiplexes a predetermined one of the plurality of data pipes from the multi-plexed signal for delivering messages to the respective coverage region over the paging communication channel, the messages being destined for reception by the at least one subscribing selective call receiver that can roam between the plurality of coverage regions identified by the plurality of regional codes.